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1.
Cell Biochem Funct ; 42(4): e4027, 2024 Jun.
Article En | MEDLINE | ID: mdl-38715184

Bioactive phytocompounds are crucial components in all plants. Since the time of traditional medicine, the utilization of plants has been grounded in the potential of these bioactive compounds to treat or manage specific illnesses. These natural bioactive compounds have sparked growing interest in employing medicinal plants for addressing various conditions, such as inflammatory diseases, diabetes, and cancer. This study focuses on assessing the qualitative phytochemical composition, antioxidant potential, and cytotoxic effects of blueberry (Vaccinium sect. Cyanococcus) extract using three different solvents, namely water, ethanol, and methanol. The extract exhibited notable antioxidant activities, as evidenced by DPPH and H2O2 free radical scavenging assays. The cell viability assay also demonstrated cell growth inhibition in A549 cells. Furthermore, nine specific phytocompounds sourced from existing literature were selected for molecular docking studies against CDK6 and, AMPK key protein kinases which enhance the cancer progression. The molecular docking results also revealed favorable binding scores, with a high score of -9.5 kcal/mol in CDK6 protein and a maximum score of AMPK with targets of -8.8 kcal/mol. The selected phytocompounds' pharmacodynamic properties such as ADMET also supported the study. Furthermore, rutin stated that pre-dominantly present in blueberry plants shows a potent cytotoxicity effect in A549 cells. Functional annotations by bioinformatic analysis for rutin also revealed the strong enrichment in the involvement of PI3K/AKT1/STAT, and p53 signaling pathways. Based on this analysis, the identified rutin and other compounds hold a promising anticancer activity. Overall, the comprehensive evaluation of both in vitro and in silico data suggests that the Vaccinium sect. Cyanococcus extract could serve as a valuable source of pharmaceutical agents and may prove effective in future therapeutic applications.


Blueberry Plants , Cell Proliferation , ErbB Receptors , Oxidative Stress , Plant Extracts , STAT3 Transcription Factor , Signal Transduction , Tumor Suppressor Protein p53 , Humans , Plant Extracts/pharmacology , Plant Extracts/chemistry , Blueberry Plants/chemistry , Oxidative Stress/drug effects , STAT3 Transcription Factor/metabolism , Tumor Suppressor Protein p53/metabolism , A549 Cells , Signal Transduction/drug effects , Cell Proliferation/drug effects , ErbB Receptors/metabolism , Interleukin-6/metabolism , Molecular Docking Simulation , Lung Neoplasms/metabolism , Lung Neoplasms/drug therapy , Lung Neoplasms/pathology , Cell Survival/drug effects , Antioxidants/pharmacology , Antioxidants/chemistry , Antioxidants/metabolism , Antineoplastic Agents, Phytogenic/pharmacology , Antineoplastic Agents, Phytogenic/chemistry , Antineoplastic Agents, Phytogenic/isolation & purification , Drug Screening Assays, Antitumor
2.
J Cell Mol Med ; 28(9): e18374, 2024 May.
Article En | MEDLINE | ID: mdl-38722288

The majority of advanced breast cancers exhibit strong aggressiveness, heterogeneity, and drug resistance, and currently, the lack of effective treatment strategies is one of the main challenges that cancer research must face. Therefore, developing a feasible preclinical model to explore tailored treatments for refractory breast cancer is urgently needed. We established organoid biobanks from 17 patients with breast cancer and characterized them by immunohistochemistry (IHC) and next generation sequencing (NGS). In addition, we in the first combination of patient-derived organoids (PDOs) with mini-patient-derived xenografts (Mini-PDXs) for the rapid and precise screening of drug sensitivity. We confirmed that breast cancer organoids are a high-fidelity three-dimension (3D) model in vitro that recapitulates the original tumour's histological and genetic features. In addition, for a heavily pretreated patient with advanced drug-resistant breast cancer, we combined PDO and Mini-PDX models to identify potentially effective combinations of therapeutic agents for this patient who were alpelisib + fulvestrant. In the drug sensitivity experiment of organoids, we observed changes in the PI3K/AKT/mTOR signalling axis and oestrogen receptor (ER) protein expression levels, which further verified the reliability of the screening results. Our study demonstrates that the PDO combined with mini-PDX model offers a rapid and precise drug screening platform that holds promise for personalized medicine, improving patient outcomes and addressing the urgent need for effective therapies in advanced breast cancer.


Breast Neoplasms , Organoids , Precision Medicine , Humans , Breast Neoplasms/drug therapy , Breast Neoplasms/pathology , Breast Neoplasms/metabolism , Female , Organoids/drug effects , Organoids/pathology , Organoids/metabolism , Precision Medicine/methods , Animals , Xenograft Model Antitumor Assays , Mice , Drug Resistance, Neoplasm/drug effects , Drug Screening Assays, Antitumor/methods , Middle Aged
3.
Cell Biochem Funct ; 42(4): e4062, 2024 Jun.
Article En | MEDLINE | ID: mdl-38807490

Since most solid tumors have a low pH value, a pH-responsive drug delivery system may offer a broad method for tumor-targeting treatment. The present study is used to analyze the anticancer activity of carvacrol-zinc oxide quantum dots (CVC-ZnO QDs) against breast cancer cells (MDA-MB-231). CVC-ZnO QDs demonstrate pH responsive and are specifically released within the acidic pH tumor microenvironment. This property enables targeted drug delivery exclusively to cancer cells while minimizing the impact on normal cells. To the synthesized ZnO QDs, the CVC was loaded and then examined by X-ray diffraction, ultraviolet-visible, Fourier transform infrared spectrophotometer, scanning electron microscopy-energy dispersive X-ray, and transmission electron microscopy. For up to 20 h, CVC release was examined in different pH-buffered solutions. The results showed that carvacrol release was stable in an acidic pH solution. Further, cytotoxicity assay, antioxidant, and lipid peroxidation activity, reactive oxygen species, mitochondrial membrane potential, nuclear damage, and the ability of CVC-ZnO QDs to cause apoptosis were all examined. Apoptosis markers such as Bcl2, Bax, caspase-3, and caspase-9, were also studied. In conclusion, the CVC-ZnO QDs destabilized the MDA-MB-231cells under its acidic tumor microenvironment and regulated apoptosis.


Antineoplastic Agents , Apoptosis , Breast Neoplasms , Cymenes , Quantum Dots , Zinc Oxide , Humans , Quantum Dots/chemistry , Zinc Oxide/chemistry , Zinc Oxide/pharmacology , Zinc Oxide/chemical synthesis , Cymenes/pharmacology , Cymenes/chemistry , Hydrogen-Ion Concentration , Breast Neoplasms/pathology , Breast Neoplasms/drug therapy , Breast Neoplasms/metabolism , Antineoplastic Agents/pharmacology , Antineoplastic Agents/chemistry , Antineoplastic Agents/chemical synthesis , Female , Apoptosis/drug effects , Cell Line, Tumor , Drug Screening Assays, Antitumor , Reactive Oxygen Species/metabolism , Cell Survival/drug effects , Membrane Potential, Mitochondrial/drug effects
4.
An Acad Bras Cienc ; 96(2): e20231247, 2024.
Article En | MEDLINE | ID: mdl-38808881

Thiosemicarbazones are promising classes of compounds with antitumor activity. For this study, six 2,4-dihydroxy-benzylidene-thiosemicarbazones compounds were synthesized. These compounds were submitted to different assays in silico, in vitro and in vivo to evaluate the toxicological, antioxidant and antitumor effects. The in silico results were evaluated by the SwissADME and pkCSM platforms and showed that all compounds had good oral bioavailability profiles. The in vitro and in vivo toxicity assays showed that the compounds showed low cytotoxicity against different normal cells and did not promote hemolytic effects. The single dose acute toxicity test (2000 mg/kg) showed that none of the compounds were toxic to mice. In in vitro antioxidant activity assays, the compounds showed moderate to low activity, with PB17 standing out for the ABTS radical capture assay. The in vivo antioxidant activity highlighted the compounds 1, 6 and 8 that promoted a significant increase in the concentration of liver antioxidant enzymes. Finally, all compounds showed promising antitumor activity against different cell lines, especially MCF-7 and DU145 lines, in addition, they inhibited the growth of sarcoma 180 at concentrations lower than 50 mg/kg. These results showed that the evaluated compounds can be considered as potential antitumor agents.


Antineoplastic Agents , Antioxidants , Thiosemicarbazones , Animals , Thiosemicarbazones/pharmacology , Thiosemicarbazones/chemistry , Antineoplastic Agents/pharmacology , Antioxidants/pharmacology , Mice , Humans , Male , Cell Line, Tumor , Computer Simulation , Drug Screening Assays, Antitumor , Female , Benzylidene Compounds/pharmacology , Benzylidene Compounds/chemistry
5.
J Biol Inorg Chem ; 29(3): 303-314, 2024 Apr.
Article En | MEDLINE | ID: mdl-38727821

This study demonstrates the potential of sono-photodynamic therapy as an effective approach for enhancing singlet oxygen generation using the synthesized Schiff-base diaxially substituted silicon phthalocyanines. In photochemical studies, the singlet oxygen quantum yields (Φ∆) were determined as 0.43 for Si1a, 0.94 for Q-Si1a, 0.58 for S-Si1a, and 0.49 for B-Sia1. In sono-photochemical studies, the Φ∆ values were reached to 0.67 for Si1a, 1.06 for Q-Si1a, 0.65 for S-Si1a, and 0.67 for B-Sia1. In addition, this study demonstrates the therapeutic efficacy of phthalocyanines synthesized as sensitizers on the PC3 prostate cancer cell line through in vitro experiments. The application of these treatment modalities exhibited notable outcomes, leading to a substantial decrease in cell viability within the PC3 prostate cancer cell line. These findings highlight the potential of utilizing these synthesized phthalocyanines as promising therapeutic agents for prostate cancer treatment.


Cell Survival , Indoles , Organosilicon Compounds , Prostatic Neoplasms , Schiff Bases , Singlet Oxygen , Humans , Indoles/chemistry , Indoles/pharmacology , Schiff Bases/chemistry , Schiff Bases/pharmacology , Male , Singlet Oxygen/metabolism , Prostatic Neoplasms/drug therapy , Prostatic Neoplasms/pathology , Prostatic Neoplasms/metabolism , Organosilicon Compounds/chemistry , Organosilicon Compounds/pharmacology , Cell Survival/drug effects , Photosensitizing Agents/pharmacology , Photosensitizing Agents/chemistry , Photosensitizing Agents/chemical synthesis , Antineoplastic Agents/pharmacology , Antineoplastic Agents/chemistry , Antineoplastic Agents/chemical synthesis , Drug Screening Assays, Antitumor , PC-3 Cells , Photochemotherapy , Photochemical Processes , Cell Line, Tumor , Molecular Structure
6.
Drug Dev Res ; 85(4): e22197, 2024 Jun.
Article En | MEDLINE | ID: mdl-38751223

Although various approaches exist for treating cancer, chemotherapy continues to hold a prominent role in the management of this disease. Besides, microtubules serve as a vital component of the cellular skeleton, playing a pivotal role in the process of cell division making it an attractive target for cancer treatment. Hence, the scope of this work was adapted to design and synthesize new anti-tubulin tetrabromophthalimide hybrids (3-17) with colchicine binding site (CBS) inhibitory potential. The conducted in vitro studies showed that compound 16 displayed the lowest IC50 values (11.46 µM) at the FaDu cancer cell lines, whereas compound 17 exhibited the lowest IC50 value (13.62 µM) at the PC3 cancer cell line. However, compound 7b exhibited the lowest IC50 value (11.45 µM) at the MDA-MB-468 cancer cell line. Moreover, compound 17 was observed to be the superior antitumor candidate against all three tested cancer cell lines (MDA-MB-468, PC3, and FaDu) with IC50 values of 17.22, 13.15, and 13.62 µM, respectively. In addition, compound 17 showed a well-established upregulation of apoptotic markers (Caspases 3, 7, 8, and 9, Bax, and P53). Moreover, compound 17 induced downregulation of the antiapoptotic markers (MMP2, MMP9, and BCL-2). Furthermore, the colchicine binding site inhibition assay showed that compounds 15a and 17 exhibited particularly significant inhibitory potentials, with IC50 values of 23.07 and 4.25 µM, respectively, compared to colchicine, which had an IC50 value of 3.89 µM. Additionally, cell cycle analysis was conducted, showing that compound 17 could prompt cell cycle arrest at both the G0-G1 and G2-M phases. On the other hand, a molecular docking approach was applied to investigate the binding interactions of the examined candidates compared to colchicine towards CBS of the ß-tubulin subunit. Thus, the synthesized tetrabromophthalimide hybrids can be regarded as outstanding anticancer candidates with significant apoptotic activity.


Antineoplastic Agents , Apoptosis , Drug Design , Phthalimides , Tubulin Modulators , Humans , Antineoplastic Agents/chemical synthesis , Antineoplastic Agents/pharmacology , Apoptosis/drug effects , Cell Line, Tumor , Cell Proliferation/drug effects , Drug Screening Assays, Antitumor , Molecular Docking Simulation , Phthalimides/chemical synthesis , Phthalimides/pharmacology , Structure-Activity Relationship , Tubulin/metabolism , Tubulin Modulators/chemical synthesis , Tubulin Modulators/pharmacology
7.
Nat Commun ; 15(1): 4363, 2024 May 22.
Article En | MEDLINE | ID: mdl-38778087

Drug screening based on in-vitro primary tumor cell culture has demonstrated potential in personalized cancer diagnosis. However, the limited number of tumor cells, especially from patients with early stage cancer, has hindered the widespread application of this technique. Hence, we developed a digital microfluidic system for drug screening using primary tumor cells and established a working protocol for precision medicine. Smart control logic was developed to increase the throughput of the system and decrease its footprint to parallelly screen three drugs on a 4 × 4 cm2 chip in a device measuring 23 × 16 × 3.5 cm3. We validated this method in an MDA-MB-231 breast cancer xenograft mouse model and liver cancer specimens from patients, demonstrating tumor suppression in mice/patients treated with drugs that were screened to be effective on individual primary tumor cells. Mice treated with drugs screened on-chip as ineffective exhibited similar results to those in the control groups. The effective drug identified through on-chip screening demonstrated consistency with the absence of mutations in their related genes determined via exome sequencing of individual tumors, further validating this protocol. Therefore, this technique and system may promote advances in precision medicine for cancer treatment and, eventually, for any disease.


Breast Neoplasms , Microfluidics , Precision Medicine , Xenograft Model Antitumor Assays , Precision Medicine/methods , Humans , Animals , Mice , Female , Cell Line, Tumor , Microfluidics/methods , Breast Neoplasms/drug therapy , Breast Neoplasms/genetics , Breast Neoplasms/pathology , Drug Screening Assays, Antitumor/methods , Antineoplastic Agents/pharmacology , Antineoplastic Agents/therapeutic use , Liver Neoplasms/drug therapy , Liver Neoplasms/genetics , Lab-On-A-Chip Devices , Microfluidic Analytical Techniques/instrumentation , Microfluidic Analytical Techniques/methods
8.
J Nat Prod ; 87(5): 1394-1400, 2024 May 24.
Article En | MEDLINE | ID: mdl-38706257

The first total synthesis of bipenicilisorin (1) isolated from Penicillium chrysogenum SCSIO 41001 via its monomer natural product, penicilisorin (2), was achieved. Penicilisorin was synthesized in four steps from a o-bromobenzaldehyde derivative via the Pd-catalyzed one-pot fluorocarbonylation/lactonization/ß-elimination cascade reaction. Iodination of penicilisorin gave 7-iodopenicilisorin which was dimerized by Pd-catalyzed homodimerization to provide (±)-bipenicilisorin. The unknown absolute configuration of naturally occurring (+)-bipenicilisorin was examined by optical resolution of the (±)-synthetic bipenicilisorin and a comparison of experimental and theoretical electronic circular dichroism (ECD) spectra. These results support the absolute configuration of the natural product to be Sa. A cytotoxic activity test of (+)-and (-)-bipenicilisorin using A549 cells revealed that (+)-1 has a lower IC50 value than (-)-1.


Penicillium chrysogenum , Molecular Structure , Humans , Penicillium chrysogenum/chemistry , Stereoisomerism , A549 Cells , Biological Products/chemistry , Biological Products/chemical synthesis , Biological Products/pharmacology , Circular Dichroism , Drug Screening Assays, Antitumor
9.
Org Lett ; 26(20): 4302-4307, 2024 May 24.
Article En | MEDLINE | ID: mdl-38728049

A plant used in an Indonesian traditional herbal medicine as a diabetes treatment and known locally as "Jampu Salo" was collected on Sulawesi Island, Indonesia. It was identified as Syzygium oblanceolatum (C. B. Rob.) Merr. (Myrtaceae) and found for the first time in Sulawesi; it was previously reported only in the eastern Philippines and Borneo. A phytochemical study of S. oblanceolatum led to the isolation of three unprecedented meroterpenoids, syzygioblanes A-C (1-3, respectively). These compounds might be biosynthesized through [4+2] cycloaddition of various germacrane-based cyclic sesquiterpenoids with the flavone desmethoxymatteucinol to form a spiro skeleton. The unique and complex structures were elucidated by microcrystal electron diffraction analysis in addition to general analytical techniques such as high-resolution mass spectrometry, various nuclear magnetic resonance methods, and infrared spectroscopy. Synchrotron X-ray diffraction and calculations of electronic circular dichroism spectra helped to determine the absolute configurations. The newly isolated compounds exhibited collateral sensitivity to more strongly inhibit the growth of a multidrug resistant tumor cell line compared to a chemosensitive tumor cell line.


Sesquiterpenes , Syzygium , Sesquiterpenes/chemistry , Sesquiterpenes/pharmacology , Sesquiterpenes/isolation & purification , Syzygium/chemistry , Molecular Structure , Indonesia , Humans , Flavanones/chemistry , Flavanones/pharmacology , Flavanones/isolation & purification , Medicine, Traditional , Antineoplastic Agents, Phytogenic/pharmacology , Antineoplastic Agents, Phytogenic/chemistry , Antineoplastic Agents, Phytogenic/isolation & purification , Drug Screening Assays, Antitumor , Cell Line, Tumor
10.
Org Lett ; 26(20): 4212-4217, 2024 May 24.
Article En | MEDLINE | ID: mdl-38743309

An unusual rhodium-catalyzed C-H activation/Lossen rearrangement/oxa-Michael addition tandem cyclization has been achieved along with a tunable well-known C-H activation/[4 + 2] annulation, leading to regio-, chemo-, and diastereoselective access to diverse pentacyclic α-carbolines and ß-carboline-1-one derivatives in moderate to good yields with significant anticancer activity.


Antineoplastic Agents , Carbolines , Rhodium , Rhodium/chemistry , Carbolines/chemistry , Carbolines/chemical synthesis , Carbolines/pharmacology , Catalysis , Cyclization , Molecular Structure , Antineoplastic Agents/pharmacology , Antineoplastic Agents/chemical synthesis , Antineoplastic Agents/chemistry , Stereoisomerism , Humans , Drug Screening Assays, Antitumor
11.
Bioorg Chem ; 147: 107413, 2024 Jun.
Article En | MEDLINE | ID: mdl-38696844

Cyclin-dependent kinase 2 (CDK2) is a vital protein for controlling cell cycle progression that is critically associated with various malignancies and its inhibition could offer a convenient therapeutic approach in designing anticancer remedies. Consequently, this study aimed to design and synthesize new CDK2 inhibitors featuring roscovitine as a template model. The purine ring of roscovitine was bioisosterically replaced with the pyrazolo[3,4-d]pyrimidine scaffold, in addition to some modifications in the side chains. A preliminary molecular docking study for the target chemotypes in the CDK2 binding domain revealed their ability to accomplish similar binding patterns and interactions to that of the lead compound roscovitine. Afterwards, synthesis of the new derivatives was accomplished. Then, the initial anticancer screening at a single dose by the NCI revealed that compounds 7a, 9c, 11c, 17a and 17b achieved the highest GI% values reaching up to 150 % indicating their remarkable activity. These derivatives were subsequently selected to undertake five-dose testing, where compounds 7a, 9c, 11c and 17a unveiled the most pronounced activity against almost the full panel with GI50 ranges; 1.41-28.2, 0.116-2.39, 0.578-60.6 and 1.75-42.4 µM, respectively and full panel GI50 (MG-MID); 8.24, 0.6, 2.46 and 6.84 µM, respectively. CDK2 inhibition assay presented compounds 7a and 9c as the most potent inhibitors with IC50 values of 0.262 and 0.281 µM, respectively which are nearly 2.4 folds higher than the reference ligand roscovitine (IC50 = 0.641 µM). Besides, flow cytometric analysis on the most susceptible and safe cell lines depicted that 7a caused cell cycle arrest at G1/S phase in renal cancer cell line (RXF393) while 9c led to cell growth arrest at S phase in breast cancer cell line (T-47D) along with pronounced apoptotic induction in the mentioned cell lines. These findings afforded new anticancer pyrazolo[3,4-d]pyrimidine, roscovitine analogs, acting via CDK2 inhibition.


Antineoplastic Agents , Cell Proliferation , Cyclin-Dependent Kinase 2 , Dose-Response Relationship, Drug , Drug Design , Drug Screening Assays, Antitumor , Molecular Docking Simulation , Protein Kinase Inhibitors , Pyrazoles , Pyrimidines , Roscovitine , Humans , Cyclin-Dependent Kinase 2/antagonists & inhibitors , Cyclin-Dependent Kinase 2/metabolism , Roscovitine/pharmacology , Roscovitine/chemical synthesis , Antineoplastic Agents/pharmacology , Antineoplastic Agents/chemical synthesis , Antineoplastic Agents/chemistry , Protein Kinase Inhibitors/pharmacology , Protein Kinase Inhibitors/chemical synthesis , Protein Kinase Inhibitors/chemistry , Pyrazoles/pharmacology , Pyrazoles/chemistry , Pyrazoles/chemical synthesis , Pyrimidines/pharmacology , Pyrimidines/chemical synthesis , Pyrimidines/chemistry , Cell Proliferation/drug effects , Structure-Activity Relationship , Molecular Structure , Cell Line, Tumor , Purines/pharmacology , Purines/chemistry , Purines/chemical synthesis
12.
Bioorg Chem ; 147: 107419, 2024 Jun.
Article En | MEDLINE | ID: mdl-38703440

We formerly reported that EZH2 inhibitors sensitized HIF-1 inhibitor-resistant cells and inhibited HIF-1α to promote SUZ12 transcription, leading to enhanced EZH2 enzyme activity and elevated H3K27me3 levels, and conversely, inhibition of EZH2 promoted HIF-1α transcription. HIF-1α and EZH2 interacted to form a negative feedback loop that reinforced each other's activity. In this paper, a series of 2,2- dimethylbenzopyran derivatives containing pyridone structural fragments were designed and synthesized with DYB-03, a HIF-1α inhibitor previously reported by our group, and Tazemetostat, an EZH2 inhibitor approved by FDA, as lead compounds. Among these compounds, D-01 had significant inhibitory activities on HIF-1α and EZH2. In vitro experiments showed that D-01 significantly inhibited the migration of A549 cells, clone, invasion and angiogenesis. Moreover, D-01 had good pharmacokinetic profiles. All the results about compound D-01 could lay a foundation for the research and development of HIF-1α and EZH2 dual-targeting compounds.


Antineoplastic Agents , Drug Screening Assays, Antitumor , Enhancer of Zeste Homolog 2 Protein , Hypoxia-Inducible Factor 1, alpha Subunit , Lung Neoplasms , Pyridones , Humans , Enhancer of Zeste Homolog 2 Protein/antagonists & inhibitors , Enhancer of Zeste Homolog 2 Protein/metabolism , Hypoxia-Inducible Factor 1, alpha Subunit/antagonists & inhibitors , Hypoxia-Inducible Factor 1, alpha Subunit/metabolism , Pyridones/chemistry , Pyridones/pharmacology , Pyridones/chemical synthesis , Lung Neoplasms/drug therapy , Lung Neoplasms/pathology , Lung Neoplasms/metabolism , Structure-Activity Relationship , Antineoplastic Agents/pharmacology , Antineoplastic Agents/chemistry , Antineoplastic Agents/chemical synthesis , Molecular Structure , Dose-Response Relationship, Drug , Cell Proliferation/drug effects , Animals , Benzopyrans/chemistry , Benzopyrans/pharmacology , Benzopyrans/chemical synthesis , Cell Movement/drug effects
13.
Bioorg Chem ; 147: 107421, 2024 Jun.
Article En | MEDLINE | ID: mdl-38714118

Targeting the homeostasis of anions and iron has emerged as a promising therapeutic approach for the treatment of cancers. However, single-targeted agents often fall short of achieving optimal treatment efficacy. Herein we designed and synthesized a series of novel dual-functional squaramide-hydroxamic acid conjugates that are capable of synergistically modulating the homeostasis of anions and iron. Among them, compound 16 exhibited the most potent antiproliferative activity against a panel of selected cancer cell lines, and strong in vivo anti-tumor efficacy. This compound effectively elevated lysosomal pH through anion transport, and reduced the levels of intracellular iron. Compound 16 could disturb autophagy in A549 cells and trigger robust apoptosis. This compound caused cell cycle arrest at the G1/S phase, altered the mitochondrial function and elevated ROS levels. The present findings clearly demonstrated that synergistic modulation of anion and iron homeostasis has high potentials in the development of promising chemotherapeutic agents with dual action against cancers.


Antineoplastic Agents , Apoptosis , Cell Proliferation , Drug Design , Drug Screening Assays, Antitumor , Homeostasis , Hydroxamic Acids , Iron , Humans , Antineoplastic Agents/pharmacology , Antineoplastic Agents/chemical synthesis , Antineoplastic Agents/chemistry , Iron/metabolism , Iron/chemistry , Cell Proliferation/drug effects , Homeostasis/drug effects , Structure-Activity Relationship , Hydroxamic Acids/pharmacology , Hydroxamic Acids/chemistry , Hydroxamic Acids/chemical synthesis , Molecular Structure , Apoptosis/drug effects , Anions/chemistry , Anions/pharmacology , Dose-Response Relationship, Drug , Animals , Cell Line, Tumor , Mice , Quinine/analogs & derivatives
14.
Org Lett ; 26(19): 4127-4131, 2024 May 17.
Article En | MEDLINE | ID: mdl-38718303

Hybrid genome-mining/15N-NMR was used to target compounds containing piperazate (Piz) residues, leading to the discovery of caveamides A (1) and B (2) from Streptomyces sp. strain BE230, isolated from New Rankin Cave (Missouri). Caveamides are highly dynamic molecules containing an unprecedented ß-ketoamide polyketide fragment, two Piz residues, and a new N-methyl-cyclohexenylalanine residue. Caveamide B (2) exhibited nanomolar cytotoxicity against several cancer cell lines and nanomolar antimicrobial activity against MRSA and E. coli.


Escherichia coli , Methicillin-Resistant Staphylococcus aureus , Streptomyces , Humans , Molecular Structure , Streptomyces/chemistry , Escherichia coli/drug effects , Methicillin-Resistant Staphylococcus aureus/drug effects , Anti-Bacterial Agents/pharmacology , Anti-Bacterial Agents/chemistry , Anti-Bacterial Agents/isolation & purification , Microbial Sensitivity Tests , Antineoplastic Agents/pharmacology , Antineoplastic Agents/chemistry , Antineoplastic Agents/isolation & purification , Alanine/chemistry , Alanine/pharmacology , Alanine/analogs & derivatives , Drug Screening Assays, Antitumor , Peptides/chemistry , Peptides/pharmacology , Peptides/isolation & purification , Cell Line, Tumor , Pyridazines
15.
Molecules ; 29(9)2024 Apr 28.
Article En | MEDLINE | ID: mdl-38731532

A series of flavanols were synthesized to assess their biological activity against human non-small cell lung cancer cells (A549). Among the sixteen synthesized compounds, it was observed that compounds 6k (3.14 ± 0.29 µM) and 6l (0.46 ± 0.02 µM) exhibited higher potency compared to 5-fluorouracil (5-Fu, 4.98 ± 0.41 µM), a clinical anticancer drug which was used as a positive control. Moreover, compound 6l (4'-bromoflavonol) markedly induced apoptosis of A549 cells through the mitochondrial- and caspase-3-dependent pathways. Consequently, compound 6l might be developed as a candidate for treating or preventing lung cancer.


Antineoplastic Agents , Apoptosis , Flavonols , Humans , Flavonols/pharmacology , Flavonols/chemical synthesis , Flavonols/chemistry , Antineoplastic Agents/pharmacology , Antineoplastic Agents/chemical synthesis , Antineoplastic Agents/chemistry , Apoptosis/drug effects , A549 Cells , Caspase 3/metabolism , Cell Proliferation/drug effects , Structure-Activity Relationship , Molecular Structure , Fluorouracil/pharmacology , Mitochondria/drug effects , Mitochondria/metabolism , Drug Screening Assays, Antitumor , Lung Neoplasms/drug therapy , Lung Neoplasms/pathology , Lung Neoplasms/metabolism , Cell Line, Tumor
16.
Molecules ; 29(9)2024 Apr 29.
Article En | MEDLINE | ID: mdl-38731537

The fungal genus Trichoderma is a rich source of structurally diverse secondary metabolites with remarkable pharmaceutical properties. The chemical constituents and anticancer activities of the marine-derived fungus Trichoderma lixii have never been investigated. In this study, a bioactivity-guided investigation led to the isolation of eleven compounds, including trichodermamide A (1), trichodermamide B (2), aspergillazine A (3), DC1149B (4), ergosterol peroxide (5), cerebrosides D/C (6/7), 5-hydroxy-2,3-dimethyl-7-methoxychromone (8), nafuredin A (9), and harzianumols E/F (10/11). Their structures were identified by using various spectroscopic techniques and compared to those in the literature. Notably, compounds 2 and 5-11 were reported for the first time from this species. Evaluation of the anticancer activities of all isolated compounds was carried out. Compounds 2, 4, and 9 were the most active antiproliferative compounds against three cancer cell lines (human myeloma KMS-11, colorectal HT-29, and pancreas PANC-1). Intriguingly, compound 4 exhibited anti-austerity activity with an IC50 of 22.43 µM against PANC-1 cancer cells under glucose starvation conditions, while compound 2 did not.


Antineoplastic Agents , Trichoderma , Antineoplastic Agents/pharmacology , Antineoplastic Agents/chemistry , Antineoplastic Agents/isolation & purification , Humans , Trichoderma/chemistry , Cell Line, Tumor , Cell Proliferation/drug effects , Molecular Structure , Aquatic Organisms/chemistry , Drug Screening Assays, Antitumor
17.
Nat Prod Res ; 38(11): 1864-1873, 2024 Jun.
Article En | MEDLINE | ID: mdl-38739563

Phytochemical studies of the stems and leaves of Stephania dielsiana Y.C.Wu yielded two new aporphine alkaloids (1 and 5), along with six known alkaloids (2-4 and 6-8). Their structures were characterised based on analyses of spectroscopic data, including one- and two-dimensional nuclear magnetic resonance (NMR) spectroscopy and high-resolution electrospray ionisation mass spectrometry (HR-ESI-MS). The cytotoxic activities of the isolated compounds against a small panel of tumour cell lines were assessed by MTS assay. Interestingly, compound 2 exhibited particularly strong cytotoxic activities against HepG2, MCF7 and OVCAR8 cancer cell lines, with IC50 values of 3.20 ± 0.18, 3.10 ± 0.06 and 3.40 ± 0.007 µM, respectively. Furthermore, molecular docking simulations were carried out to explore the interactions and binding mechanisms of the most active compound (compound 2) with proteins. Our results contribute to understanding the secondary metabolites produced by S. dielsiana and provide a scientific rationale for further investigations of cytotoxicity of this valuable medicinal plant.


Alkaloids , Antineoplastic Agents, Phytogenic , Aporphines , Molecular Docking Simulation , Plant Leaves , Plant Stems , Stephania , Aporphines/chemistry , Aporphines/pharmacology , Humans , Plant Leaves/chemistry , Plant Stems/chemistry , Alkaloids/chemistry , Alkaloids/pharmacology , Stephania/chemistry , Antineoplastic Agents, Phytogenic/pharmacology , Antineoplastic Agents, Phytogenic/chemistry , Molecular Structure , Cell Line, Tumor , Hep G2 Cells , MCF-7 Cells , Drug Screening Assays, Antitumor , Magnetic Resonance Spectroscopy , Plants, Medicinal/chemistry
18.
J Colloid Interface Sci ; 668: 618-633, 2024 Aug 15.
Article En | MEDLINE | ID: mdl-38696990

Tumor metastasis and recurrence are closely related to immune escape and hypoxia. Chemodynamic therapy (CDT), photodynamic therapy (PDT), and photothermal therapy (PTT) can induce immunogenic cell death (ICD), and their combination with immune checkpoint agents is a promising therapeutic strategy. Iron based nanomaterials have received more and more attention, but their low Fenton reaction efficiency has hindered their clinical application. In this study, Fe3O4-carbon dots complex (Fe3O4-CDs) was synthesized, which was modified with ferrocenedicarboxylic acid by amide bond, and crosslinked into Fe3O4-CDs@Fc nano complex. The CDs catalyzed the Fenton reaction activity of Fe3O4 by helping to improve the electron transfer efficiency, extended the reaction pH condition to 7.4. The Fe3O4-CDs@Fc exhibit exceptional optical activity, achieving a thermal conversion efficiency of 56.43 % under 808 nm light and a photosensitive single-line state oxygen quantum yield of 33 % under 660 nm light. Fe3O4-CDs@Fc improved intracellular oxygen level and inhibited hypoxia-inducing factor (HIF-1α) by in-situ oxygen production based on Fenton reaction. The multimodal combination of Fe3O4-CDs@Fc (CDT/PDT/PTT) strongly induced immune cell death (ICD). The expression of immune-related protein and HIF-1α was investigated by immunofluorescence method. In vivo, Fe3O4-CDs@Fc combined with immune checkpoint blocker (antibody PD-L1, αPD-L1) effectively ablated primary tumors and inhibited distal tumor growth. Fe3O4-CDs@Fc is a promising immune-antitumor drug.


Carbon , Oxygen , Quantum Dots , Mice , Animals , Quantum Dots/chemistry , Carbon/chemistry , Humans , Catalysis , Oxygen/chemistry , Immunotherapy , Particle Size , Antineoplastic Agents/pharmacology , Antineoplastic Agents/chemistry , Photochemotherapy , Mice, Inbred BALB C , Cell Line, Tumor , Iron/chemistry , Hydrogen Peroxide/chemistry , Hydrogen Peroxide/pharmacology , Surface Properties , Cell Survival/drug effects , Cell Proliferation/drug effects , Drug Screening Assays, Antitumor , Female
19.
J Enzyme Inhib Med Chem ; 39(1): 2343352, 2024 Dec.
Article En | MEDLINE | ID: mdl-38700244

In the last decade, an increasing interest in compounds containing pyrazolo[4,3-e][1,2,4]triazine moiety is observed. Therefore, the aim of the research was to synthesise a novel sulphonyl pyrazolo[4,3-e][1,2,4]triazines (2a, 2b) and pyrazolo[4,3-e]tetrazolo[1,5-b][1,2,4]triazine sulphonamide derivatives (3a, 3b) to assess their anticancer activity. The MTT assay showed that 2a, 2b, 3a, 3b have stronger cytotoxic activity than cisplatin in both breast cancer cells (MCF-7 and MDA-MB-231) and exhibited weaker effect on normal breast cells (MCF-10A). The obtained results showed that the most active compound 3b increased apoptosis via caspase 9, caspase 8, and caspase 3/7. It is worth to note that compound 3b suppressed NF-κB expression and promoted p53, Bax, and ROS which play important role in activation of apoptosis. Moreover, our results confirmed that compound 3b triggers autophagy through increased formation of autophagosomes, expression of beclin-1 and mTOR inhibition. Thus, our study defines a possible mechanism underlying 3b-induced anti-cancer activity against breast cancer cell lines.


Antineoplastic Agents , Apoptosis , Breast Neoplasms , Cell Proliferation , Dose-Response Relationship, Drug , Drug Screening Assays, Antitumor , Sulfonamides , Triazines , Humans , Triazines/pharmacology , Triazines/chemistry , Triazines/chemical synthesis , Antineoplastic Agents/pharmacology , Antineoplastic Agents/chemistry , Antineoplastic Agents/chemical synthesis , Breast Neoplasms/drug therapy , Breast Neoplasms/pathology , Breast Neoplasms/metabolism , Structure-Activity Relationship , Sulfonamides/pharmacology , Sulfonamides/chemistry , Sulfonamides/chemical synthesis , Molecular Structure , Cell Proliferation/drug effects , Apoptosis/drug effects , Tumor Cells, Cultured , Pyrazoles/pharmacology , Pyrazoles/chemistry , Pyrazoles/chemical synthesis , Female , Cell Line, Tumor , Spheroids, Cellular/drug effects
20.
Eur J Med Chem ; 271: 116444, 2024 May 05.
Article En | MEDLINE | ID: mdl-38691889

The NAPRT-induced increase in NAD+ levels was proposed as a mechanism contributing to hepatocellular carcinoma (HCC) resistance to NAMPT inhibitors. Thus, concurrently targeting NAMPT and NAPRT could be considered to overcome drug resistance. A BRD4 inhibitor downregulates the expression of NAPRT in HCC, and the combination of NAMPT inhibitors with BRD4 inhibitors simultaneously blocks NAD+ generation via salvage and the PH synthesis pathway. Moreover, the combination of the two agents significantly downregulated the expression of tumor-promoting genes and strongly promoted apoptosis. The present work identified various NAMPT/BRD4 dual inhibitors based on the multitargeted drug rationale. Among them, compound A2, which demonstrated the strongest effect, exhibited potent inhibition of NAMPT and BRD4 (IC50 = 35 and 58 nM, respectively). It significantly suppressed the growth and migration of HCC cells and facilitated their apoptosis. Furthermore, compound A2 also manifested a robust anticancer effect in HCCLM3 xenograft mouse models, with no apparent toxic effects. Our findings in this study provide an effective approach to target NAD+ metabolism for HCC treatment.


Antineoplastic Agents , Apoptosis , Carcinoma, Hepatocellular , Cell Cycle Proteins , Cell Proliferation , Cytokines , Liver Neoplasms , Nicotinamide Phosphoribosyltransferase , Transcription Factors , Nicotinamide Phosphoribosyltransferase/antagonists & inhibitors , Nicotinamide Phosphoribosyltransferase/metabolism , Humans , Carcinoma, Hepatocellular/drug therapy , Carcinoma, Hepatocellular/pathology , Carcinoma, Hepatocellular/metabolism , Liver Neoplasms/drug therapy , Liver Neoplasms/pathology , Liver Neoplasms/metabolism , Animals , Antineoplastic Agents/pharmacology , Antineoplastic Agents/chemistry , Antineoplastic Agents/chemical synthesis , Cell Proliferation/drug effects , Mice , Apoptosis/drug effects , Structure-Activity Relationship , Transcription Factors/antagonists & inhibitors , Transcription Factors/metabolism , Cell Cycle Proteins/antagonists & inhibitors , Cell Cycle Proteins/metabolism , Cytokines/metabolism , Cytokines/antagonists & inhibitors , Drug Discovery , Drug Screening Assays, Antitumor , Molecular Structure , Dose-Response Relationship, Drug , Mice, Nude , Cell Line, Tumor , Mice, Inbred BALB C , Bromodomain Containing Proteins
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