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1.
Dokl Biol Sci ; 493(1): 128-131, 2020 Jul.
Article in English | MEDLINE | ID: mdl-32894427

ABSTRACT

The influence of pre-sowing treatment of spring wheat seeds with combined use of plant growth hormones and sorption preparations based on bentonite-humate mixtures on seeds germination and their development in soils was studied. In some cases, the combined use of plant growth hormones and the sorption preparation (CB-H-BYA) that can decrease the intake of allelotoxins from soil to seeds allows noticeably increasing the efficiency of plant growth hormones used for pre-sowing treatment. The inclusion of cytokinins (6-benzylaminopurine, kinetin, and forchlorophenuron) into the sorption preparation (CB-H-BYA) had markedly different effects on seeds germination. The addition of Polysorbate 20 to the sorption preparation (CB-H-BYA) leads to an increase in the effectiveness of its action on seed germination.


Subject(s)
Plant Growth Regulators/pharmacology , Seedlings/growth & development , Seeds/drug effects , Triticum/growth & development , 4-Aminobenzoic Acid/pharmacology , Agriculture/methods , Bentonite , Benzyl Compounds/chemistry , Fatty Alcohols/pharmacology , Germination/drug effects , Germination/physiology , Kinetin/chemistry , Phenylurea Compounds/chemistry , Purines/chemistry , Pyridines/chemistry , Seeds/physiology , Soil/chemistry , Triticum/drug effects
2.
J Chromatogr A ; 1622: 461131, 2020 Jul 05.
Article in English | MEDLINE | ID: mdl-32381301

ABSTRACT

A carbazolic conjugated microporous polymer (designated as CZ-CMP) was successfully synthesized through Scholl reaction of carbazole with 1, 3, 5-triphenylbenzene. The CZ-CMP was characterized by FT-IR spectrum, X-ray diffraction, nitrogen sorption isotherms, and scanning electron microscopy. The characterization results showed that the CZ-CMP had a spherical structure with high surface area and good microporosity. Its adsorption performance was investigated by applying it as an adsorbent for the solid phase extraction (SPE) of phenyl urea herbicides (PUHs) (metoxuron, chlortoluron, isoproturon, monolinuron and buturon) from tea drinks samples prior to high performance liquid chromatographic detection. The CZ-CMP displayed high extraction efficiency for the PUHs, and the primary factors affecting the SPE efficiency including the type and volume of the eluent, sample solution pH, sample loading rate and sample volume were optimized. Under the optimized conditions, a good linear response for the analytes was observed in the range of 0.10-80.0 ng mL-1 with correlation coefficients (r) from 0.9937 to 0.9997. The limits of detection were measured to be in the range of 0.02-0.30 ng mL-1 and the limits of quantitation were in the range of 0.06-0.9 ng mL-1. The developed method was successfully applied for the determination of the five PUHs in four different kinds of drinks with the method recoveries between 83.7% and 118% and the relative standard deviations between 1.0% and 10%. Besides, the application potential of the CZ-CMP was evaluated by using it to extract different types of the organic compounds including some phthalate eaters (PAEs), chlorophenol (CPs), nitroimidazoles and polycyclic aromatic hydrocarbons (PAHs). The results indicated that the CZ-CMP had strong adsorption ability for the compounds with more hydrogen bonding sites and moderate hydrophobicity.


Subject(s)
Herbicides/isolation & purification , Phenylurea Compounds/chemistry , Polymers/chemical synthesis , Solid Phase Extraction/methods , Adsorption , Carbazoles/chemistry , Chromatography, High Pressure Liquid/methods , Hydrogen-Ion Concentration , Phenylurea Compounds/isolation & purification , Polymers/chemistry , Porosity , Solutions , Spectroscopy, Fourier Transform Infrared , Tea/chemistry
3.
Pharmacol Res Perspect ; 7(6): e00545, 2019 12.
Article in English | MEDLINE | ID: mdl-31763044

ABSTRACT

Age-related macular degeneration (AMD) is the leading cause of severe vision impairment in patients over the age of 60 years. Choroidal neovascularization (CNV) is the hallmark of neovascular AMD and vascular endothelial growth factor (VEGF) plays a causal role in the formation of CNV. Although regorafenib and pazopanib, small molecule VEGF receptor (VEGFR) inhibitors, were developed as eye-drops, their efficacies were insufficient in clinical. In this study, we evaluated ocular pharmacokinetics and pharmacological activities of regorafenib and pazopanib after ocular instillation in multiple animal species. In rats, both regorafenib and pazopanib showed high enough concentrations in the posterior eye tissues to inhibit VEGFR. In laser-induced rat CNV model, regorafenib showed clear reduction in CNV area. On the other hand, the concentrations of regorafenib and pazopanib in the posterior eye tissues were much lower after ocular instillation in rabbits and monkeys compared to those in rats. Pazopanib did not show any improvement in monkey model. Regorafenib was nano-crystalized to improve its drug delivery to the posterior eye tissues. The nano-crystalized formulation of regorafenib showed higher concentrations in the posterior segments in rabbits compared to its microcrystal suspension. From these studies, large interspecies differences were found in ocular delivery to the posterior segments after ocular instillation. Such large interspecies difference could be the reason for the insufficient efficacies of regorafenib and pazopanib in clinical studies. Nano-crystallization was suggested to be one of the effective ways to overcome this issue.


Subject(s)
Angiogenesis Inhibitors/pharmacology , Choroidal Neovascularization/drug therapy , Macular Degeneration/drug therapy , Phenylurea Compounds/pharmacology , Pyridines/pharmacology , Pyrimidines/pharmacology , Sulfonamides/pharmacology , Angiogenesis Inhibitors/therapeutic use , Animals , Choroidal Neovascularization/etiology , Choroidal Neovascularization/pathology , Crystallization , Disease Models, Animal , Drug Evaluation, Preclinical , Eye/metabolism , Eye/pathology , Female , Humans , Indazoles , Macaca fascicularis , Macular Degeneration/etiology , Macular Degeneration/pathology , Male , Nanoparticles/chemistry , Nanoparticles/therapeutic use , Ophthalmic Solutions/pharmacology , Ophthalmic Solutions/therapeutic use , Particle Size , Phenylurea Compounds/chemistry , Phenylurea Compounds/therapeutic use , Pyridines/chemistry , Pyridines/therapeutic use , Pyrimidines/chemistry , Pyrimidines/therapeutic use , Rabbits , Rats , Receptors, Vascular Endothelial Growth Factor/antagonists & inhibitors , Species Specificity , Sulfonamides/chemistry , Sulfonamides/therapeutic use , Vascular Endothelial Growth Factor A/metabolism
4.
Leuk Lymphoma ; 60(8): 1866-1876, 2019 08.
Article in English | MEDLINE | ID: mdl-30997851

ABSTRACT

Acute myeloid leukemia (AML) is a heterogeneous disease and remains a therapeutic challenge. Cytogenetics is a well-established prognostic factor. Recent discovery of molecular mutations has gained momentum with some being potential therapeutic targets. FLT3 mutation seen in approximately one third of the cytogenetically normal AML confers high risk of relapse and poor survival. Quizartinib is the first drug developed specifically as a FLT3 inhibitor. It has confirmed safety and efficacy in phase I and II clinical trials and has shown survival benefit over conventional chemotherapy in patients with FLT3 ITD mutated relapsed/refractory AML. Despite such promise, disease relapses are still seen. Besides the complex nature of AML itself, resistance mechanisms blunting the efficacy of quizartinib have been identified and are being investigated including TKD mutations, alternate signaling pathways and the bone marrow microenvironment. Strategies using combination of quizartinib with other TKIs/agents like crenolinib, PIM kinase, and MEK inhibitors should be further explored.


Subject(s)
Antineoplastic Agents/pharmacology , Benzothiazoles/pharmacology , Phenylurea Compounds/pharmacology , Protein Kinase Inhibitors/pharmacology , fms-Like Tyrosine Kinase 3/antagonists & inhibitors , Animals , Antineoplastic Agents/chemistry , Antineoplastic Agents/therapeutic use , Antineoplastic Combined Chemotherapy Protocols/adverse effects , Antineoplastic Combined Chemotherapy Protocols/therapeutic use , Benzothiazoles/chemistry , Benzothiazoles/therapeutic use , Biomarkers, Tumor , Clinical Studies as Topic , Combined Modality Therapy , Drug Development , Drug Discovery , Drug Evaluation, Preclinical , Drug Resistance, Neoplasm , Humans , Leukemia, Myeloid, Acute/genetics , Leukemia, Myeloid, Acute/metabolism , Leukemia, Myeloid, Acute/therapy , Molecular Targeted Therapy , Phenylurea Compounds/chemistry , Phenylurea Compounds/therapeutic use , Protein Kinase Inhibitors/chemistry , Protein Kinase Inhibitors/therapeutic use , Treatment Outcome
5.
J Agric Food Chem ; 66(47): 12479-12489, 2018 Nov 28.
Article in English | MEDLINE | ID: mdl-30407808

ABSTRACT

Phenylurea herbicides (PHs) are frequently detected as major water contaminants in areas where there is extensive use. In this study, Diaphorobacter sp. strain LR2014-1, which initially hydrolyzes linuron to 3,4-dichloroanaline, and Achromobacter sp. strain ANB-1, which further mineralizes the produced aniline derivatives, were isolated from a linuron-mineralizing consortium despite being present at low abundance in the community. The synergistic catabolism of linuron by the consortium containing these two strains resulted in more efficient catabolism of linuron and growth of both strains. Strain LR2014-1 harbors two evolutionary divergent hydrolases from the amidohydrolase superfamily Phh and the amidase superfamily TccA2, which functioned complementarily in the hydrolysis of various types of PHs, including linuron ( N-methoxy- N-methyl-substituted), diuron, chlorotoluron, fluomethuron ( N, N-dimethyl-substituted), and siduron. These findings show that a bacterial consortium can contain catabolically synergistic species for PH mineralization, and one strain could harbor functionally complementary hydrolases for a broadened substrate range.


Subject(s)
Betaproteobacteria/metabolism , Herbicides/metabolism , Hydrolases/metabolism , Microbial Consortia , Phenylurea Compounds/metabolism , Phosphoprotein Phosphatases/metabolism , Protein Kinases/metabolism , Betaproteobacteria/enzymology , Betaproteobacteria/genetics , Betaproteobacteria/isolation & purification , Biodegradation, Environmental , Herbicides/chemistry , Hydrolases/genetics , Phenylurea Compounds/chemistry , Phosphoprotein Phosphatases/genetics , Protein Kinases/genetics , Soil Microbiology
6.
Expert Opin Pharmacother ; 19(17): 1941-1948, 2018 Dec.
Article in English | MEDLINE | ID: mdl-30345837

ABSTRACT

Introduction: Hepatocellular carcinoma (HCC) is one of the most frequent malignant tumors with 854,000 new cases per year and represents the second most frequent cause of cancer-death. Despite surveillance, the number of patients that are diagnosed at a stage in which they are eligible for curative treatments ranges from 30% to 60%. Advanced HCC (BCLC-C) is characterized by a median survival of 6 months. Sorafenib, the first systemic drug proven to be effective in prolonging survival of unresectable HCC, was approved by the FDA in 2007 but no second-line treatment was available for a decade for patients progressing on sorafenib. Finally, in 2016, the RESORCE trial demonstrated regorafenib as an effective second-line treatment. Areas covered: In this manuscript, the authors review the principal preclinical and clinical trials on regorafenib used in the treatment of unresectable HCC patients progressing on sorafenib and highlight both the advantages and the limitations of this drug. Expert opinion: Regorafenib is the only second-line treatment available for patients progressing on sorafenib. Despite its promising clinical application, many doubts still remain, necessitating further investigation to explore the tolerability of this drug in Child-Pugh B and sorafenib-intolerant patients, while its scarce cost-effectiveness must also be improved.


Subject(s)
Carcinoma, Hepatocellular/drug therapy , Liver Neoplasms/drug therapy , Phenylurea Compounds/therapeutic use , Pyridines/therapeutic use , Animals , Antineoplastic Agents/chemistry , Antineoplastic Agents/pharmacokinetics , Antineoplastic Agents/pharmacology , Antineoplastic Agents/therapeutic use , Carcinoma, Hepatocellular/metabolism , Drug Screening Assays, Antitumor , Humans , Liver Neoplasms/metabolism , Phenylurea Compounds/chemistry , Phenylurea Compounds/pharmacokinetics , Phenylurea Compounds/pharmacology , Pyridines/chemistry , Pyridines/pharmacokinetics , Pyridines/pharmacology , Sorafenib/therapeutic use
7.
Biomed Res Int ; 2018: 6870139, 2018.
Article in English | MEDLINE | ID: mdl-29516007

ABSTRACT

Arnebia benthamii of the family Boraginaceae is a critically endangered nonendemic plant of the Kashmir Himalayas and is used to treat a number of human diseases. The current study was based on developing an in vitro micropropagation protocol vis-à-vis induction of various secondary metabolites under in vitro conditions for the possible biological activity. A tissue culture protocol was developed for A. benthamii for the first time in the Himalayan region using varied combinations and proper media formulations, including various adjuvants: Murashige and Skoog (MS) media, growth hormones, sugars, agar, and so forth. The influence of different media combinations was estimated, and the MS + thidiazuron (TDZ) + indole 3-acetic acid (IAA) combination favors a higher regeneration potential. The higher amounts of chemical constituents were also recorded on the same treatment. The in vitro plant samples also showed a noteworthy effect of scavenging of hydroxyl radicals vis-à-vis protection from oxidative DNA damage. The in vitro raised plants are good candidates for the development of antioxidant molecules.


Subject(s)
Antioxidants/chemistry , Boraginaceae/chemistry , DNA Damage/drug effects , Drug Compounding , Phytochemicals/pharmacology , Animals , Antioxidants/therapeutic use , Cattle , DNA/drug effects , Free Radical Scavengers/chemistry , Free Radical Scavengers/pharmacology , Humans , Indoleacetic Acids/chemistry , Indoleacetic Acids/pharmacology , Phenylurea Compounds/chemistry , Phenylurea Compounds/pharmacology , Phytochemicals/chemistry , Plant Growth Regulators/chemistry , Plant Growth Regulators/pharmacology , Plant Roots/chemistry , Plant Shoots/chemistry , Plants, Medicinal/chemistry , Regeneration/drug effects , Thiadiazoles/chemistry , Thiadiazoles/pharmacology , Tissue Culture Techniques
8.
Biomater Sci ; 5(12): 2468-2479, 2017 Nov 21.
Article in English | MEDLINE | ID: mdl-29106433

ABSTRACT

Hepatocellular carcinoma (HCC) is one of the most common malignancies imposing a serious threat to human health worldwide. To date, the effect of HCC chemotherapy has been limited due to drug resistance. Combination therapy of chemotherapeutic drugs and siRNA represents an emerging strategy that may improve anticancer effects by synergistic actions. The current study was aimed at achieving better HCC treatment via combination therapy, in which PEI-modified liposomes prepared by a thin-film hydration method were used to codeliver sorafenib (SF) and siRNA targeting GPC3 gene (siGPC3). Under optimized experimental conditions, SF and siGPC3 were effectively loaded into liposomes (SF-PL/siGPC3). SF-PL/siGPC3 with selected sizes and zeta potentials effectively accumulated at tumor sites and entered HCC cells. The two codelivered therapeutic agents exerted good anticancer effects by jointly suppressing the expression of the anti-apoptotic GPC3 gene and the proliferative cyclin D1 gene in HCC. Consequently, the intravenous injection of SF-PL/siGPC3 into nude mice bearing subcutaneous human HepG2 xenografts effectively inhibited tumor growth and also increased the survival rates of animals. These results revealed the great potential of the PEI-modified liposomal nanomedicine carrying SF and siGPC3 to improve HCC treatment.


Subject(s)
Carcinoma, Hepatocellular/drug therapy , Glypicans/genetics , Liver Neoplasms/drug therapy , Niacinamide/analogs & derivatives , Phenylurea Compounds/administration & dosage , RNA, Small Interfering/administration & dosage , Animals , Apoptosis/drug effects , Apoptosis/genetics , Carcinoma, Hepatocellular/genetics , Carcinoma, Hepatocellular/pathology , Cell Proliferation/drug effects , Cell Proliferation/genetics , Combined Modality Therapy , Drug Delivery Systems , Drug Resistance, Neoplasm/genetics , Gene Transfer Techniques , Glypicans/antagonists & inhibitors , Hep G2 Cells , Humans , Liposomes/administration & dosage , Liposomes/chemistry , Liver Neoplasms/genetics , Liver Neoplasms/pathology , Mice , Niacinamide/administration & dosage , Niacinamide/chemistry , Phenylurea Compounds/chemistry , RNA, Small Interfering/genetics , Sorafenib
9.
Br J Pharmacol ; 174(24): 4797-4811, 2017 Dec.
Article in English | MEDLINE | ID: mdl-28977680

ABSTRACT

BACKGROUND AND PURPOSE: The human kinome consists of roughly 500 kinases, including 150 that have been proposed as therapeutic targets. Protein kinases regulate an array of signalling pathways that control metabolism, cell cycle progression, cell death, differentiation and survival. It is not surprising, then, that new kinase inhibitors developed to treat cancer, including sorafenib, also exhibit cardiotoxicity. We hypothesized that sorafenib cardiotoxicity is related to its deleterious effects on specific cardiac metabolic pathways given the critical roles of protein kinases in cardiac metabolism. EXPERIMENTAL APPROACH: FVB/N mice (10 per group) were challenged with sorafenib or vehicle control daily for 2 weeks. Echocardiographic assessment of the heart identified systolic dysfunction consistent with cardiotoxicity in sorafenib-treated mice compared to vehicle-treated controls. Heart, skeletal muscle, liver and plasma were flash frozen and prepped for non-targeted GC-MS metabolomics analysis. KEY RESULTS: Compared to vehicle-treated controls, sorafenib-treated hearts exhibited significant alterations in 11 metabolites, including markedly altered taurine/hypotaurine metabolism (25-fold enrichment), identified by pathway enrichment analysis. CONCLUSIONS AND IMPLICATIONS: These studies identified alterations in taurine/hypotaurine metabolism in the hearts and skeletal muscles of mice treated with sorafenib. Interventions that rescue or prevent these sorafenib-induced changes, such as taurine supplementation, may be helpful in attenuating sorafenib-induced cardiac injury.


Subject(s)
Heart/drug effects , Liver/drug effects , Metabolomics , Muscle, Skeletal/drug effects , Niacinamide/analogs & derivatives , Phenylurea Compounds/pharmacology , Plasma/drug effects , Protein Kinase Inhibitors/pharmacology , Animals , Liver/metabolism , Mice , Mice, Inbred Strains , Muscle, Skeletal/metabolism , Niacinamide/chemistry , Niacinamide/pharmacology , Phenylurea Compounds/chemistry , Plasma/metabolism , Protein Kinase Inhibitors/chemistry , Sorafenib , Tissue Distribution
10.
ChemMedChem ; 12(16): 1390-1398, 2017 08 22.
Article in English | MEDLINE | ID: mdl-28639308

ABSTRACT

Oncogenic activation of RET kinase has been found in several neoplastic diseases, like medullary thyroid carcinoma, multiple endocrine neoplasia, papillary thyroid carcinoma, and non-small-cell lung cancer. Currently approved RET inhibitors were not originally designed to be RET inhibitors, and their potency against RET kinase has not been optimized. Hence, novel compounds able to inhibit both wild-type RET (wt RET) and its mutants (e.g., V804M RET) are needed. Herein we present the development and the preliminary evaluation of a new sub-micromolar wt RET/V804M RET inhibitor, N-(2-fluoro-5-trifluoromethylphenyl)-N'-{4'-[(2''-benzamido)pyridin-4''-ylamino]phenyl}urea (69), endowed with a 4-anilinopyridine structure, starting from our previously identified 4-anilinopyrimidine hit compound. Profiling against a panel of kinases indicated 69 as a multi cKIT/wt RET/V804M RET inhibitor.


Subject(s)
Aminopyridines/chemistry , Phenylurea Compounds/chemistry , Protein Kinase Inhibitors/chemistry , Proto-Oncogene Proteins c-ret/metabolism , Aminopyridines/chemical synthesis , Aminopyridines/toxicity , Binding Sites , Cell Line, Tumor , Drug Evaluation, Preclinical , Heterocyclic Compounds/chemical synthesis , Heterocyclic Compounds/chemistry , Heterocyclic Compounds/pharmacology , Humans , Hydrogen Bonding , Inhibitory Concentration 50 , Molecular Docking Simulation , Mutation , Phenylurea Compounds/chemical synthesis , Phenylurea Compounds/toxicity , Phosphorylation/drug effects , Protein Kinase Inhibitors/chemical synthesis , Protein Kinase Inhibitors/pharmacology , Protein Structure, Tertiary , Proto-Oncogene Proteins c-ret/antagonists & inhibitors , Proto-Oncogene Proteins c-ret/genetics , Urea/analogs & derivatives , Urea/chemical synthesis , Urea/pharmacology
11.
Sci Rep ; 7(1): 1728, 2017 05 11.
Article in English | MEDLINE | ID: mdl-28496142

ABSTRACT

This study aimed to investigate the role of src-homology protein tyrosine phosphatase-1 (SHP-1)-signal transducer and activator of transcription 3 (STAT3) pathway in liver fibrogenesis and the anti-fibrotic effect of SHP-1 agonist. The antifibrotic activity of SC-43, a sorafenib derivative with an enhanced SHP-1 activity, was evaluated in two fibrosis mouse models by carbon tetrachloride induction and bile duct ligation. Rat, human, and primary mouse hepatic stellate cells (HSCs) were used for mechanistic investigations. The results showed that SHP-1 protein primarily localized in fibrotic areas of human and mouse livers. SC-43 treatment reduced the activated HSCs and thus effectively prevented and regressed liver fibrosis in both fibrosis mouse models and improved mouse survival. In vitro studies revealed that SC-43 promoted HSC apoptosis, increased the SHP-1 activity and inhibited phospho-STAT3. The enhanced SHP-1 activity in HSCs significantly inhibited HSC proliferation, whereas SHP-1 inhibition rescued SC-43-induced HSC apoptosis. Furthermore, SC-43 interacted with the N-SH2 domain of SHP-1 to enhance the activity of SHP-1 as its antifibrotic mechanism. In conclusion, the SHP-1-STAT3 pathway is crucial in fibrogenesis. SC-43 significantly ameliorates liver fibrosis through SHP-1 upregulation. A SHP-1-targeted antifibrotic therapy may represent a druggable strategy for antifibrotic drug discovery.


Subject(s)
Liver Cirrhosis/drug therapy , Phenyl Ethers/therapeutic use , Phenylurea Compounds/therapeutic use , Protein Tyrosine Phosphatase, Non-Receptor Type 6/metabolism , Animals , Apoptosis/drug effects , Bile Ducts/pathology , Carbon Tetrachloride , Cell Line , Cell Proliferation/drug effects , Disease Models, Animal , Hepatic Stellate Cells/drug effects , Hepatic Stellate Cells/metabolism , Humans , Ligation , Liver Cirrhosis/pathology , Liver Cirrhosis/prevention & control , Male , Mice, Inbred C57BL , Mutation/genetics , Phenyl Ethers/chemistry , Phenyl Ethers/pharmacology , Phenylurea Compounds/chemistry , Phenylurea Compounds/pharmacology , Protein Domains , Protein Tyrosine Phosphatase, Non-Receptor Type 6/chemistry , Rats , STAT3 Transcription Factor/metabolism , Sorafenib/chemistry , Sorafenib/pharmacology , Sorafenib/therapeutic use
12.
Nanomedicine (Lond) ; 12(8): 911-925, 2017 04.
Article in English | MEDLINE | ID: mdl-28339312

ABSTRACT

AIM: Hybrids composed of various materials are highly versatile for drug delivery in tumor therapy including hepatocellular carcinoma. Herein, a sorafenib (SF)-loaded biomacromolecule hyaluronic acid (HA)/lipid hybrid nanoparticles (HA/SF-cLNS) were developed for targeting drug delivery. MATERIALS & METHODS: In vitro assays determined HA/SF-cLNS release behavior, enzymatic degradation, uptake and cytotoxicity. H22-bearing liver cancer xenograft murine models were used to evaluate the biodistribution and therapeutic efficacy in vivo. RESULTS: HA/SF-cLNS could be disassembled and drug was released in response to hyaluronidase. In vivo imaging results demonstrated HA/cLNS could enhance drug accumulation at tumor site. Meanwhile, HA/SF-cLNS exhibited improved antitumor efficacy in vitro and in vivo. CONCLUSION: HA/SF-cLNS demonstrated the potential to enhance antitumor efficacy of SF.


Subject(s)
Carcinoma, Hepatocellular/drug therapy , Liver Neoplasms/drug therapy , Nanoparticles/administration & dosage , Niacinamide/analogs & derivatives , Phenylurea Compounds/administration & dosage , Animals , Cell Survival/drug effects , Drug Delivery Systems , Hep G2 Cells , Humans , Lipids/administration & dosage , Lipids/chemistry , Mice , Nanoparticles/chemistry , Niacinamide/administration & dosage , Niacinamide/chemistry , Phenylurea Compounds/chemistry , Sorafenib , Xenograft Model Antitumor Assays
13.
Mol Oncol ; 11(3): 266-279, 2017 03.
Article in English | MEDLINE | ID: mdl-28084011

ABSTRACT

Recurrent triple-negative breast cancer (TNBC) needs new therapeutic targets. Src homology region 2 domain-containing phosphatase-1 (SHP-1) can act as a tumor suppressor by dephosphorylating oncogenic kinases. One major target of SHP-1 is STAT3, which is highly activated in TNBC. In this study, we tested a sorafenib analogue SC-60, which lacks angiokinase inhibition activity, but acts as a SHP-1 agonist, in TNBC cells. SC-60 inhibited proliferation and induced apoptosis by dephosphorylating STAT3 in both a dose- and time-dependent manner in TNBC cells (MDA-MB-231, MDA-MB-468, and HCC1937). By contrast, ectopic expression of STAT3 rescued the anticancer effect induced by SC-60. SC-60 also increased the SHP-1 activity, but this effect was inhibited when the N-SH2 domain (DN1) was deleted or with SHP-1 point mutation (D61A), implying that SHP-1 is the major target of SC-60 in TNBC. The use of SC-60 in combination with docetaxel synergized the anticancer effect induced by SC-60 through the SHP-1/STAT3 pathway in TNBC cells. Importantly, SC-60 also displayed a significant antitumor effect in an MDA-MB-468 xenograft model by modulating the SHP-1/STAT3 axis, indicating the anticancer potential of SC-60 in TNBC treatment. Targeting SHP-1/p-STAT3 and the potential combination of SHP-1 agonist with chemotherapeutic docetaxel is a feasible therapeutic strategy for TNBC.


Subject(s)
Antineoplastic Agents/therapeutic use , Apoptosis/drug effects , Breast/drug effects , Niacinamide/analogs & derivatives , Phenylurea Compounds/therapeutic use , Protein Tyrosine Phosphatase, Non-Receptor Type 6/metabolism , STAT3 Transcription Factor/metabolism , Taxoids/therapeutic use , Triple Negative Breast Neoplasms/drug therapy , Animals , Antineoplastic Agents/chemistry , Antineoplastic Agents/pharmacology , Breast/metabolism , Breast/pathology , Cell Line, Tumor , Docetaxel , Drug Synergism , Female , Humans , Mice, Nude , Niacinamide/chemistry , Niacinamide/pharmacology , Niacinamide/therapeutic use , Phenylurea Compounds/chemistry , Phenylurea Compounds/pharmacology , Signal Transduction/drug effects , Sorafenib , Taxoids/pharmacology , Triple Negative Breast Neoplasms/metabolism , Triple Negative Breast Neoplasms/pathology
14.
Curr Med Chem ; 24(16): 1671-1686, 2017.
Article in English | MEDLINE | ID: mdl-28078996

ABSTRACT

The old-fashioned anticancer approaches, aiming at arresting cancer cell proliferation interfering with non-specific targets (e.g. DNA), have been replaced, in the last decades, by more specific target oriented ones. Nonetheless, single-target approaches have not always led to optimal outcomes because, for its complexity, cancer needs to be tackled at various levels by modulation of several targets. Although at present, combinations of individual singletarget drugs represent the most clinically practiced therapeutic approaches, the modulation of multiple proteins by a single drug, in accordance with the polypharmacological strategy, has become more and more appealing. In the perspective of a multi-target approach, the closely related evolutionary members of the tyrosine kinase family are ideal candidates. Indeed, tyrosine kinase activities are not only critical in tumor phenotype maintenance, but also modulate several functions in the tumor microenvironment. Consequently, several multikinase inhibitors were approved in the last decade, and many new molecules are currently in preclinical or clinical development. In the present review we report on the most widely FDA-approved multitargeted drugs, discussing about their mechanism of action and outlining the clinical trials that have brought them to approval.


Subject(s)
Neoplasms/drug therapy , Protein Kinase Inhibitors/therapeutic use , Receptor Protein-Tyrosine Kinases/metabolism , Anilides/chemistry , Anilides/therapeutic use , Crizotinib , Humans , Imatinib Mesylate/chemistry , Imatinib Mesylate/therapeutic use , Imidazoles/chemistry , Imidazoles/therapeutic use , Indoles/chemistry , Indoles/therapeutic use , Neoplasms/metabolism , Neoplasms/pathology , Niacinamide/analogs & derivatives , Niacinamide/chemistry , Niacinamide/therapeutic use , Phenylurea Compounds/chemistry , Phenylurea Compounds/therapeutic use , Piperidines/chemistry , Piperidines/therapeutic use , Protein Kinase Inhibitors/chemistry , Pyrazoles/chemistry , Pyrazoles/therapeutic use , Pyridazines/chemistry , Pyridazines/therapeutic use , Pyridines/chemistry , Pyridines/therapeutic use , Pyrroles/chemistry , Pyrroles/therapeutic use , Quinazolines/chemistry , Quinazolines/therapeutic use , Receptor Protein-Tyrosine Kinases/antagonists & inhibitors , Sorafenib , Sunitinib
15.
Biomed Pharmacother ; 88: 395-402, 2017 Apr.
Article in English | MEDLINE | ID: mdl-28122304

ABSTRACT

Hepatocellular carcinoma (HCC) is a common and fatal malignancy of the liver. Sorafenib is a small molecule multikinase inhibitor that acts against different cancer cell lines and is used for the treatment of HCC. However, some advanced HCC patients fail to respond to sorafenib, and those who do lack a meaningful clinical benefit. Interferon-lambda 3 (IFN-λ3) is a type III interferon with antiviral, antiproliferative, and immunomodulatory functions. Here, we evaluated the use of IFN-λ3 as an adjuvant treatment with sorafenib in HCC. In the present study, CCK-8 and colony formation assay results showed that treatment with a combination of IFN-λ3 and sorafenib suppresses the viability of HepG2 and SMMC7721 liver cancer cell lines more than treatment with either alone. In addition, flow cytometry results confirmed that treatment with a combination of IFN-λ3 and sorafenib promotes the loss of mitochondrial membrane potential and induces the production of ROS more than treatment with either alone. Furthermore, using a subcutaneous SMMC7721 tumor model, treatment with a combination of IFN-λ3 and sorafenib significantly reduced the tumor growth/volume and induced apoptosis compared to treatment with sorafenib alone. These results show that combined treatment with IFN-λ3 and sorafenib facilitates a synergistic effect on suppressing HCC cancer growth and promoting cell apoptosis in vitro and in vivo. Thus, IFN-λ3 in combination with sorafenib might prove to be a useful adjunctive strategy for the clinical treatment of HCC.


Subject(s)
Carcinoma, Hepatocellular/drug therapy , Carcinoma, Hepatocellular/pathology , Interleukins/therapeutic use , Liver Neoplasms/drug therapy , Liver Neoplasms/pathology , Niacinamide/analogs & derivatives , Phenylurea Compounds/therapeutic use , Animals , Apoptosis/drug effects , Carcinogenesis/metabolism , Carcinogenesis/pathology , Caspase 3/metabolism , Cell Cycle/drug effects , Cell Line, Tumor , Cell Proliferation/drug effects , Cyclin D1/metabolism , Cyclin-Dependent Kinase Inhibitor p21/metabolism , Drug Synergism , Female , Humans , Interferons , Interleukins/pharmacology , Membrane Potential, Mitochondrial/drug effects , Mice, Nude , Niacinamide/chemistry , Niacinamide/pharmacology , Niacinamide/therapeutic use , Phenylurea Compounds/chemistry , Phenylurea Compounds/pharmacology , Reactive Oxygen Species/metabolism , Sorafenib
16.
J Asian Nat Prod Res ; 19(1): 9-14, 2017 Jan.
Article in English | MEDLINE | ID: mdl-27256560

ABSTRACT

Three new alkaloids namely 8-(4-hydroxyphenyl)-6-methoxy-3,4-dihydroisoquinolin-1(2H)-one (1), 4-aminonigellidine (2), and N-[(4-hydroxy-2-isopropyl-5-methyl)]phenylurea (3), along with six known ones (4-9), were isolated from the seeds of Nigella glandulifera. The structures of 1-3 were determined through spectroscopic analyses (HRESIMS, 1D/2D NMR). Compound 1 was a rare isoquinolinone alkaloid with phenyl substituted at C-8.


Subject(s)
Alkaloids/isolation & purification , Drugs, Chinese Herbal/isolation & purification , Isoquinolines/isolation & purification , Nigella/chemistry , Phenylurea Compounds/isolation & purification , Seeds/chemistry , Alkaloids/chemistry , Drugs, Chinese Herbal/chemistry , Indazoles , Isoquinolines/chemistry , Molecular Structure , Nuclear Magnetic Resonance, Biomolecular , Phenylurea Compounds/chemistry
17.
Int J Nanomedicine ; 11: 715-28, 2016.
Article in English | MEDLINE | ID: mdl-26955271

ABSTRACT

Green synthesis of silver nanoparticles (AgNPs) by using plants is an emerging class of nanobiotechnology. It revolutionizes all domains of medical sciences by synthesizing chemical-free AgNPs for various biomedical applications. In this report, AgNPs were successfully synthesized by using whole plant extract (WPE) and thidiazuron-induced callus extract (CE) of Linum usitatissimum. The phytochemical analysis revealed that the total phenolic and flavonoid contents were higher in CE than that in WPE. Ultraviolet-visible spectroscopy of synthesized AgNPs showed a characteristic surface plasmon band in the range of 410-426 nm. Bioreduction of CE-mediated AgNPs was completed in a shorter time than that of WPE-mediated AgNPs. Scanning electron microscopy showed that both types of synthesized AgNPs were spherical in shape, but CE-mediated AgNPs were smaller in size (19-24 nm) and more scattered in distribution than that of WPE-mediated AgNPs (49-54 nm). X-ray diffraction analysis confirmed crystalline nature (face-centered cubic) of both types of AgNPs. Fourier-transform infrared spectroscopy revealed that the polyphenols and flavonoids were mainly responsible for reduction and capping of synthesized AgNPs. Energy dispersive X-ray analysis further confirmed the successful synthesis of AgNPs. Moreover, the synthesized AgNPs were found to be stable over months with no change in the surface plasmon bands. More importantly, CE-mediated AgNPs displayed significantly higher bactericidal activity against multiple drug-resistant human pathogens than WPE-mediated AgNPs. The present work highlighted the potent role of thidiazuron in in vitro-derived cultures for enhanced biosynthesis of chemical-free AgNPs, which can be used as nanomedicines in many biomedical applications.


Subject(s)
Anti-Infective Agents/pharmacology , Bacteria/drug effects , Flax/chemistry , Metal Nanoparticles/chemistry , Phenylurea Compounds/chemistry , Plant Extracts/pharmacology , Silver/chemistry , Thiadiazoles/chemistry , Humans , Metal Nanoparticles/administration & dosage , Phytotherapy , Plant Extracts/chemistry , X-Ray Diffraction
18.
Int J Pharm ; 503(1-2): 150-62, 2016 Apr 30.
Article in English | MEDLINE | ID: mdl-26965198

ABSTRACT

Poly(D,L-lactic acid) biodegradable microspheres, loaded with the drugs cisplatin and/or sorafenib tosylate, were prepared, characterized and studied. Degradation of the microspheres, and release of cisplatin and/or sorafenib tosylate from them, were investigated in detail. Incubation of the drug-carrying microspheres in phosphate buffered saline (pH=7.4) revealed slow degradation. Nevertheless, significant release of cisplatin and sorafenib tosylate from microspheres loaded with both drugs was apparent in vitro; this can be attributed to their porous structure. Supernatants from microspheres loaded with both drugs showed strong toxic effects on cells (i.e. endothelial cells, fibroblast cells and Renca tumor cells) and potent anti-angiogenic effect in the matrigel endothelial tube assay. In vivo anti-tumor effects of the microspheres were also observed, in a Renca tumor mouse model. The poly(D,L-lactic acid) microspheres containing both cisplatin and sorafenib tosylate revealed highest therapeutic efficacy, probably demonstrating that combined local administration of cisplatin and sorafenib tosylate synergistically inhibits tumor growth in situ. In conclusion, this study demonstrates the applicability of biodegradable poly(D,L-lactic acid) microspheres loaded with cisplatin and sorafenib tosylate for local drug delivery as well as the potential of these microspheres for future use in transarterial chemoembolization.


Subject(s)
Antineoplastic Agents/administration & dosage , Cisplatin/administration & dosage , Drug Delivery Systems , Embolization, Therapeutic , Microspheres , Niacinamide/analogs & derivatives , Phenylurea Compounds/administration & dosage , Animals , Antineoplastic Agents/chemistry , Antineoplastic Agents/pharmacology , Antineoplastic Agents/therapeutic use , Cell Line, Tumor , Cell Survival/drug effects , Cisplatin/chemistry , Cisplatin/pharmacology , Cisplatin/therapeutic use , Drug Liberation , Female , Fibroblasts/drug effects , Human Umbilical Vein Endothelial Cells/drug effects , Mice, Inbred BALB C , Neoplasms/pathology , Neoplasms/therapy , Niacinamide/administration & dosage , Niacinamide/chemistry , Niacinamide/pharmacology , Niacinamide/therapeutic use , Phenylurea Compounds/chemistry , Phenylurea Compounds/pharmacology , Phenylurea Compounds/therapeutic use , Polyesters/chemistry , Sorafenib , Tumor Burden/drug effects
19.
Colloids Surf B Biointerfaces ; 141: 83-92, 2016 May 01.
Article in English | MEDLINE | ID: mdl-26844644

ABSTRACT

To improve the poor water solubility of sorafenib and to monitor its distribution and the early feedback effects on its in vivo treatment efficacy in a precise manner, sorafenib (SF) and gadolinium (Gd) co-loaded liposomes (SF/Gd-liposomes) were prepared. The simultaneous imaging and therapy efficacies of the SF/Gd-liposomes were tested. The solubility of SF in SF/Gd-liposomes was significantly increased from 0.21 µg/mL to 250 µg/mL. The imaging capability of SF/Gd-liposomes were tested by in-vitro and the in-vivo imaging ability tests and the results confirmed that SF/Gd-liposomes could be served as an effective contrast agent. The design of SF/Gd-liposomes allowed the MRI-guided in vivo visualization of the delivery and biodistribution of liposome. In the in vivo antitumor studies, SF/Gd-liposomes had better antitumor effects in H22 tumor-bearing mice than SF solution (oral or i.v. administration) (P<0.05). These findings indicated that the SF/Gd-liposomes could be used as the promising nano-carriers for the MRI-guided in vivo visualization of the delivery and HCC treatment.


Subject(s)
Antineoplastic Combined Chemotherapy Protocols/pharmacokinetics , Carcinoma, Hepatocellular/diagnostic imaging , Liposomes/chemistry , Liver Neoplasms, Experimental/diagnostic imaging , Magnetic Resonance Imaging/methods , Animals , Antineoplastic Combined Chemotherapy Protocols/administration & dosage , Antineoplastic Combined Chemotherapy Protocols/chemistry , Carcinoma, Hepatocellular/drug therapy , Carcinoma, Hepatocellular/metabolism , Cell Line, Tumor , Cell Survival/drug effects , Contrast Media/administration & dosage , Contrast Media/chemistry , Drug Delivery Systems , Drug Liberation , Female , Gadolinium/administration & dosage , Gadolinium/chemistry , Hep G2 Cells , Humans , Liver Neoplasms, Experimental/drug therapy , Liver Neoplasms, Experimental/metabolism , Mice , Microscopy, Electron, Transmission , Niacinamide/administration & dosage , Niacinamide/analogs & derivatives , Niacinamide/chemistry , Phenylurea Compounds/administration & dosage , Phenylurea Compounds/chemistry , Sorafenib , Tissue Distribution , Treatment Outcome , Tumor Burden/drug effects
20.
Biomacromolecules ; 16(12): 3784-91, 2015 Dec 14.
Article in English | MEDLINE | ID: mdl-26528591

ABSTRACT

Sorafenib (Sor), an effective chemiotherapeutic drug utilized against hepatocellular carcinoma (HCC), robustly interacts with nonionic amphiphilic cyclodextrin (aCD, SC6OH), forming, in aqueous solution, supramolecular complexes that behave as building blocks of highly water-dispersible colloidal nanoassemblies. SC6OH/Sor complex has been characterized by complementary spectroscopic techniques, such as UV-vis, steady-state fluorescence and anisotropy, resonance light scattering and (1)H NMR. The spectroscopic evidences and experiments carried out in the presence of an adamantane derivative, which competes with drug for CD cavity, agree with the entrapment of Sor in aCD, pointing out the role of the aCD cavity in the interaction between drug and amphiphile. Nanoassemblies based on SC6OH/Sor display size of ∼200 nm, negative zeta-potential (ζ = -11 mV), and both maximum loading capacity (LC ∼ 17%) and entrapment efficiency (EE ∼ 100%). Kinetic release profiles show a slower release of Sor from nanoassemblies with respect to the free drug. SC6OH/Sor nanoassemblies have very low hemolytic activity and high efficiency in vitro in decreasing cell growth and viability of HCC cell lines, such as HepG2, Hep3B, and PLC/PRF/5, opening promising chances to their in vivo applications.


Subject(s)
Antineoplastic Agents/pharmacology , Cyclodextrins/chemistry , Delayed-Action Preparations/pharmacology , Nanostructures/chemistry , Niacinamide/analogs & derivatives , Phenylurea Compounds/pharmacology , Surface-Active Agents/chemistry , Adamantane/chemistry , Antineoplastic Agents/chemistry , Binding, Competitive , Cell Line, Tumor , Cell Survival/drug effects , Delayed-Action Preparations/chemistry , Drug Compounding , Drug Liberation , Erythrocytes/cytology , Erythrocytes/drug effects , Hemolysis/drug effects , Hepatocytes/drug effects , Hepatocytes/pathology , Humans , Kinetics , Nanostructures/ultrastructure , Niacinamide/chemistry , Niacinamide/pharmacology , Phenylurea Compounds/chemistry , Sorafenib
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