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1.
Int J Biol Macromol ; 260(Pt 2): 129391, 2024 Mar.
Artigo em Inglês | MEDLINE | ID: mdl-38242413

RESUMO

The nanotechnology is an interdisciplinary field that has become a hot topic in cancer therapy. Metal-organic frameworks (MOFs) are porous materials and hybrid composites consisted of organic linkers and metal cations. Despite the wide application of MOFs in other fields, the potential of MOFs for purpose of cancer therapy has been revealed by the recent studies. High surface area and porosity, significant drug loading and encapsulation efficiency are among the benefits of using MOFs in drug delivery. MOFs can deliver genes/drugs with selective targeting of tumor cells that can be achieved through functionalization with ligands. The photosensitizers and photo-responsive nanostructures including carbon dots and gold nanoparticles can be loaded in/on MOFs to cause phototherapy-mediated tumor ablation. The immunogenic cell death induction and increased infiltration of cytotoxic CD8+ and CD4+ T cells can be accelerated by MOF platforms in providing immunotherapy of tumor cells. The stimuli-responsive MOF platforms responsive to pH, redox, enzyme and ion can accelerate release of therapeutics in tumor site. Moreover, MOF nanocomposites can be modified ligands and green polymers to improve their selectivity and biocompatibility for cancer therapy. The application of MOFs for the detection of cancer-related biomarkers can participate in the early diagnosis of patients.


Assuntos
Nanopartículas Metálicas , Estruturas Metalorgânicas , Nanocompostos , Neoplasias , Humanos , Estruturas Metalorgânicas/química , Ouro , Biomimética , Fototerapia , Sistemas de Liberação de Medicamentos , Neoplasias/diagnóstico , Neoplasias/tratamento farmacológico , Nanocompostos/uso terapêutico
2.
Drug Discov Today ; 29(1): 103851, 2024 Jan.
Artigo em Inglês | MEDLINE | ID: mdl-38092146

RESUMO

Breast cancer is the most common and malignant tumor among women. Chitosan (CS)-based nanoparticles have been introduced into breast cancer therapy as a way to increase the targeted delivery of drugs and genes to the tumor site. CS nanostructures suppress tumorigenesis by enhancing both the targeted delivery of cargo (drug and gene) and its accumulation in tumor cells. The tumor cells internalize CS-based nanoparticles through endocytosis. Moreover, chitosan nanocarriers can also induce phototherapy-mediated tumor ablation. Smart and multifunctional types of CS nanoparticles, including pH-, light- and redox-responsive nanoparticles, can be used to improve the potential for breast cancer removal. In addition, the acceleration of immunotherapy by CS nanoparticles has also been achieved, and there is potential to develop CS-nanoparticle hydrogels that can be used to suppress tumorigenesis.


Assuntos
Neoplasias da Mama , Quitosana , Nanopartículas , Feminino , Humanos , Neoplasias da Mama/tratamento farmacológico , Quitosana/química , Sistemas de Liberação de Medicamentos , Fototerapia , Nanopartículas/química , Carcinogênese , Imunoterapia , Concentração de Íons de Hidrogênio
3.
Bioeng Transl Med ; 8(1): e10353, 2023 Jan.
Artigo em Inglês | MEDLINE | ID: mdl-36684065

RESUMO

Urological cancers are among the most common malignancies around the world. In particular, bladder cancer severely threatens human health due to its aggressive and heterogeneous nature. Various therapeutic modalities have been considered for the treatment of bladder cancer although its prognosis remains unfavorable. It is perceived that treatment of bladder cancer depends on an interdisciplinary approach combining biology and engineering. The nanotechnological approaches have been introduced in the treatment of various cancers, especially bladder cancer. The current review aims to emphasize and highlight possible applications of nanomedicine in eradication of bladder tumor. Nanoparticles can improve efficacy of drugs in bladder cancer therapy through elevating their bioavailability. The potential of genetic tools such as siRNA and miRNA in gene expression regulation can be boosted using nanostructures by facilitating their internalization and accumulation at tumor sites and cells. Nanoparticles can provide photodynamic and photothermal therapy for ROS overgeneration and hyperthermia, respectively, in the suppression of bladder cancer. Furthermore, remodeling of tumor microenvironment and infiltration of immune cells for the purpose of immunotherapy are achieved through cargo-loaded nanocarriers. Nanocarriers are mainly internalized in bladder tumor cells by endocytosis, and proper design of smart nanoparticles such as pH-, redox-, and light-responsive nanocarriers is of importance for targeted tumor therapy. Bladder cancer biomarkers can be detected using nanoparticles for timely diagnosis of patients. Based on their accumulation at the tumor site, they can be employed for tumor imaging. The clinical translation and challenges are also covered in current review.

4.
Bioeng Transl Med ; 8(1): e10325, 2023 Jan.
Artigo em Inglês | MEDLINE | ID: mdl-36684100

RESUMO

Green chemistry has been a growing multidisciplinary field in recent years showing great promise in biomedical applications, especially for cancer therapy. Chitosan (CS) is an abundant biopolymer derived from chitin and is present in insects and fungi. This polysaccharide has favorable characteristics, including biocompatibility, biodegradability, and ease of modification by enzymes and chemicals. CS-based nanoparticles (CS-NPs) have shown potential in the treatment of cancer and other diseases, affording targeted delivery and overcoming drug resistance. The current review emphasizes on the application of CS-NPs for the delivery of a chemotherapeutic agent, doxorubicin (DOX), in cancer therapy as they promote internalization of DOX in cancer cells and prevent the activity of P-glycoprotein (P-gp) to reverse drug resistance. These nanoarchitectures can provide co-delivery of DOX with antitumor agents such as curcumin and cisplatin to induce synergistic cancer therapy. Furthermore, co-loading of DOX with siRNA, shRNA, and miRNA can suppress tumor progression and provide chemosensitivity. Various nanostructures, including lipid-, carbon-, polymeric- and metal-based nanoparticles, are modifiable with CS for DOX delivery, while functionalization of CS-NPs with ligands such as hyaluronic acid promotes selectivity toward tumor cells and prevents DOX resistance. The CS-NPs demonstrate high encapsulation efficiency and due to protonation of amine groups of CS, pH-sensitive release of DOX can occur. Furthermore, redox- and light-responsive CS-NPs have been prepared for DOX delivery in cancer treatment. Leveraging these characteristics and in view of the biocompatibility of CS-NPs, we expect to soon see significant progress towards clinical translation.

5.
Arch Physiol Biochem ; 129(2): 393-404, 2023 Apr.
Artigo em Inglês | MEDLINE | ID: mdl-33040642

RESUMO

INTRODUCTION: This meta-analysis study assessed the effects of Berberis vulgaris L. and Berberis aristata L. in patients with metabolic syndrome. METHODS: Data were analysed through "random-effects meta-regression" performance. RESULTS: The findings indicated that LDL was 0.68 and 2.92 lower in the B. vulgaris L. and B. aristata L.-treated groups versus the controls. The HDL was 0.71-fold higher in the B. aristata L.-treated group versus the controls. The total-cholesterol levels were 1.02 and 2.25 folds lower in the B. vulgaris L. and B. aristata L.-treated groups versus the matched control groups. The triglyceride levels were 1.35 and 1.16-fold lower in the B. vulgaris L. and B. aristata L.-treated groups versus the controls. Glucose was 0.96 and 0.54 folds lower in the B. vulgaris L. and B. aristata L.-treated groups versus the control groups, respectively. CONCLUSION: B. vulgaris L. and B. aristata L. have beneficial effects in patients with metabolic syndrome.


Assuntos
Berberis , Síndrome Metabólica , Humanos , Síndrome Metabólica/tratamento farmacológico , Extratos Vegetais/farmacologia
6.
J Control Release ; 351: 50-80, 2022 11.
Artigo em Inglês | MEDLINE | ID: mdl-35934254

RESUMO

The site-specific delivery of antitumor agents is of importance for providing effective cancer suppression. Poor bioavailability of anticancer compounds and the presence of biological barriers prevent their accumulation in tumor sites. These obstacles can be overcome using liposomal nanostructures. The challenges in cancer chemotherapy and stimuli-responsive nanocarriers are first described in the current review. Then, stimuli-responsive liposomes including pH-, redox-, enzyme-, light-, thermo- and magneto-sensitive nanoparticles are discussed and their potential for delivery of anticancer drugs is emphasized. The pH- or redox-sensitive liposomes are based on internal stimulus and release drug in response to a mildly acidic pH and GSH, respectively. The pH-sensitive liposomes can mediate endosomal escape via proton sponge. The multifunctional liposomes responsive to both redox and pH have more capacity in drug release at tumor site compared to pH- or redox-sensitive alone. The magnetic field and NIR irradiation can be exploited for external stimulation of liposomes. The light-responsive liposomes release drugs when they are exposed to irradiation; thermosensitive-liposomes release drugs at a temperature of >40 °C when there is hyperthermia; magneto-responsive liposomes release drugs in presence of magnetic field. These smart nanoliposomes also mediate co-delivery of drugs and genes in synergistic cancer therapy. Due to lack of long-term toxicity of liposomes, they can be utilized in near future for treatment of cancer patients.


Assuntos
Antineoplásicos , Hipertermia Induzida , Neoplasias , Humanos , Lipossomos/química , Sistemas de Liberação de Medicamentos , Liberação Controlada de Fármacos , Neoplasias/tratamento farmacológico , Concentração de Íons de Hidrogênio
7.
J Exp Clin Cancer Res ; 41(1): 214, 2022 Jul 01.
Artigo em Inglês | MEDLINE | ID: mdl-35773731

RESUMO

BACKGROUND: One of the most malignant tumors in men is prostate cancer that is still incurable due to its heterogenous and progressive natures. Genetic and epigenetic changes play significant roles in its development. The RNA molecules with more than 200 nucleotides in length are known as lncRNAs and these epigenetic factors do not encode protein. They regulate gene expression at transcriptional, post-transcriptional and epigenetic levels. LncRNAs play vital biological functions in cells and in pathological events, hence their expression undergoes dysregulation. AIM OF REVIEW: The role of epigenetic alterations in prostate cancer development are emphasized here. Therefore, lncRNAs were chosen for this purpose and their expression level and interaction with other signaling networks in prostate cancer progression were examined. KEY SCIENTIFIC CONCEPTS OF REVIEW: The aberrant expression of lncRNAs in prostate cancer has been well-documented and progression rate of tumor cells are regulated via affecting STAT3, NF-κB, Wnt, PI3K/Akt and PTEN, among other molecular pathways. Furthermore, lncRNAs regulate radio-resistance and chemo-resistance features of prostate tumor cells. Overexpression of tumor-promoting lncRNAs such as HOXD-AS1 and CCAT1 can result in drug resistance. Besides, lncRNAs can induce immune evasion of prostate cancer via upregulating PD-1. Pharmacological compounds such as quercetin and curcumin have been applied for targeting lncRNAs. Furthermore, siRNA tool can reduce expression of lncRNAs thereby suppressing prostate cancer progression. Prognosis and diagnosis of prostate tumor at clinical course can be evaluated by lncRNAs. The expression level of exosomal lncRNAs such as lncRNA-p21 can be investigated in serum of prostate cancer patients as a reliable biomarker.


Assuntos
Neoplasias da Próstata , RNA Longo não Codificante , Regulação Neoplásica da Expressão Gênica , Humanos , Masculino , Fosfatidilinositol 3-Quinases/metabolismo , Prognóstico , Neoplasias da Próstata/diagnóstico , Neoplasias da Próstata/tratamento farmacológico , Neoplasias da Próstata/genética , RNA Longo não Codificante/genética , RNA Longo não Codificante/metabolismo
8.
Curr Radiopharm ; 15(3): 236-241, 2022.
Artigo em Inglês | MEDLINE | ID: mdl-35306999

RESUMO

BACKGROUND: Breast cancer is one of the most common types of malignancies in the world. Cancer resistance is an unavoidable consequence of therapy with radiation or other modalities. Ongoing research aims to improve cancer response to therapy. AIM: The aim of this study was to evaluate the possible sensitization effect of imperatorin (IMP) in combination with external radiotherapy (ERT) or HT. METHODS: After treatment of MCF-7 breast cancer cells with IMP, cells were exposed to 4 Gy X-rays or HT (42 °C for 1 hour). The viability of MCF-7 cells was measured using an MTT assay. Furthermore, the expression of pro-apoptotic genes, including Bax, Bcl-2, caspase-3, caspase-8, and caspase- 9, was investigated using real-time PCR. The sensitizing effect of IMP in combination with ERT or HT was calculated and compared to ERT or HT alone. RESULTS: Results showed an increase in the expression of pro-apoptotic genes and downregulation of anti-apoptotic Bcl-2 following ERT and HT. Furthermore, cell viability was reduced following these treatments. IMP was able to augment these effects of ERT and HT. CONCLUSION: IMP could increase the efficiency of HT and ERT. This effect of IMP may suggest it as an adjuvant for increasing the therapeutic efficiency of ERT.


Assuntos
Neoplasias da Mama , Furocumarinas , Hipertermia Induzida , Apoptose/efeitos dos fármacos , Apoptose/efeitos da radiação , Neoplasias da Mama/tratamento farmacológico , Neoplasias da Mama/patologia , Neoplasias da Mama/radioterapia , Feminino , Furocumarinas/uso terapêutico , Humanos , Células MCF-7
9.
Talanta ; 243: 123374, 2022 Jun 01.
Artigo em Inglês | MEDLINE | ID: mdl-35298927

RESUMO

Green-synthesized nanobiomaterials can be engineered as smart nanomedicine platforms for diagnostic and therapeutic purposes in medicine. Herein, we investigated the bioengineering of silver nanoparticles (AgNPs) and evaluated their physicochemical, antibacterial, biofilm inhibitory, anticoagulant, and antioxidant performance. Characterization of the AgNPs was performed utilizing UV-visible, transmission electron microscope (TEM), scanning electron microscope (SEM), X-ray diffraction (XRD), dynamic light scattering (DLS), and Fourier transform infrared spectroscopy (FT-IR). The spherical shaped AgNPs were proven by TEM and SEM techniques. Moreover, the XRD diffraction patterns demonstrated that the nanoparticles were in a crystalline state. The DLS represented the hydrodynamic particle size of the NPs at 49.62 nm at a pH of 9. The calculated minimum inhibitory concentration (MIC) of AgNPs toward Staphylococcus aureus (ATCC 25923) was 8 µg mL-1, which was almost similar to tetracycline by the value of 4 µg mL-1. Moreover, the minimum bactericidal concentration (MBC) of AgNPs was 64 µg mL-1, which was significantly less than the determined value of 256 µg mL-1 for tetracycline. Considering the pathogenic and standard S. aureus, the evaluated concentrations of AgNPs and tetracycline showed significant biofilm inhibitory performance. Furthermore, the bioengineered AgNPs exhibited significant anticoagulant activity at 500 µg mL-1 compared to saline (P < 0.001). In addition, the biogenic AgNPs inhibited 69.73 ± 0.56% of DPPH free radicals at 500 µg mL-1, indicating considerable antioxidant potential.


Assuntos
Nanopartículas Metálicas , Prata , Antibacterianos/química , Antibacterianos/farmacologia , Anticoagulantes/farmacologia , Antioxidantes/química , Antioxidantes/farmacologia , Bioengenharia , Biofilmes , Nanopartículas Metálicas/química , Testes de Sensibilidade Microbiana , Extratos Vegetais/química , Prata/química , Prata/farmacologia , Espectroscopia de Infravermelho com Transformada de Fourier , Staphylococcus aureus
10.
Phytother Res ; 36(1): 189-213, 2022 Jan.
Artigo em Inglês | MEDLINE | ID: mdl-34697839

RESUMO

Curcumin is a phytochemical isolated from Curcuma longa with potent tumor-suppressor activity, which has shown significant efficacy in pre-clinical and clinical studies. Curcumin stimulates cell death, triggers cycle arrest, and suppresses oncogenic pathways, thereby suppressing cancer progression. Cisplatin (CP) stimulates DNA damage and apoptosis in cancer chemotherapy. However, CP has adverse effects on several organs of the body, and drug resistance is frequently observed. The purpose of the present review is to show the function of curcumin in decreasing CP's adverse impacts and improving its antitumor activity. Curcumin administration reduces ROS levels to prevent apoptosis in normal cells. Furthermore, curcumin can inhibit inflammation via down-regulation of NF-κB to maintain the normal function of organs. Curcumin and its nanoformulations can reduce the hepatoxicity, neurotoxicity, renal toxicity, ototoxicity, and cardiotoxicity caused by CP. Notably, curcumin potentiates CP cytotoxicity via mediating cell death and cycle arrest. Besides, curcumin suppresses the STAT3 and NF-ĸB as tumor-promoting pathways, to enhance CP sensitivity and prevent drug resistance. The targeted delivery of curcumin and CP to tumor cells can be mediated nanostructures. In addition, curcumin derivatives are also able to reduce CP-mediated side effects, and increase CP cytotoxicity against various cancer types.


Assuntos
Antineoplásicos , Curcumina , Neoplasias , Antineoplásicos/farmacologia , Apoptose , Cisplatino/farmacologia , Curcumina/farmacologia , Humanos , Neoplasias/tratamento farmacológico
11.
Adv Sci (Weinh) ; 9(2): e2102678, 2022 01.
Artigo em Inglês | MEDLINE | ID: mdl-34796680

RESUMO

Cancer is one of the top life-threatening dangers to the human survival, accounting for over 10 million deaths per year. Bioactive glasses have developed dramatically since their discovery 50 years ago, with applications that include therapeutics as well as diagnostics. A new system within the bioactive glass family, mesoporous bioactive glasses (MBGs), has evolved into a multifunctional platform, thanks to MBGs easy-to-functionalize nature and tailorable textural properties-surface area, pore size, and pore volume. Although MBGs have yet to meet their potential in tumor treatment and imaging in practice, recently research has shed light on the distinguished MBGs capabilities as promising theranostic systems for cancer imaging and therapy. This review presents research progress in the field of MBG applications in cancer diagnosis and therapy, including synthesis of MBGs, mechanistic overview of MBGs application in tumor diagnosis and drug monitoring, applications of MBGs in cancer therapy ( particularly, targeted delivery and stimuli-responsive nanoplatforms), and immunological profile of MBG-based nanodevices in reference to the development of novel cancer therapeutics.


Assuntos
Vidro/química , Neoplasias/diagnóstico , Neoplasias/terapia , Animais , Modelos Animais de Doenças , Hipertermia Induzida/métodos , Camundongos , Nanomedicina/métodos , Neoplasias/imunologia , Fotoquimioterapia/métodos , Terapia Fototérmica/métodos , Porosidade
12.
Arch Physiol Biochem ; 128(3): 666-678, 2022 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-32013614

RESUMO

The present systematic and meta-analysis study was designed to show the protective impact of saffron and crocin supplementation on hyperlipidaemia and hyperglycaemia in randomised and clinical trials (RCTs). A pooled analysis using a model for random-effects showed that HDL-C levels were 0.21 fold higher in the saffron and 0.01 fold higher in the crocin group than placebo. LDL-C levels in the saffron group reduced by 0.51 and 0.04 fold in the crocin group versus the placebo. Moreover, TC levels in the saffron group were 0.19 lower and 0.11 fold lower in crocin group than in the placebo group. TG level in saffron group was 0.04 lower and 0.02 fold lower in crocin than the control group. The blood glucose levels did not significantly differ from the control group. This study suggests that saffron and crocin may modulate the serum lipid profile in patient with metabolic disorders.


Assuntos
Crocus , Hiperlipidemias , Carotenoides/farmacologia , Carotenoides/uso terapêutico , Humanos , Hiperlipidemias/tratamento farmacológico , Ensaios Clínicos Controlados Aleatórios como Assunto
13.
Int J Mol Sci ; 22(21)2021 Oct 28.
Artigo em Inglês | MEDLINE | ID: mdl-34769099

RESUMO

As a multifactorial disease, treatment of cancer depends on understanding unique mechanisms involved in its progression. The cancer stem cells (CSCs) are responsible for tumor stemness and by enhancing colony formation, proliferation as well as metastasis, and these cells can also mediate resistance to therapy. Furthermore, the presence of CSCs leads to cancer recurrence and therefore their complete eradication can have immense therapeutic benefits. The present review focuses on targeting CSCs by natural products in cancer therapy. The growth and colony formation capacities of CSCs have been reported can be attenuated by the dietary agents. These compounds can induce apoptosis in CSCs and reduce tumor migration and invasion via EMT inhibition. A variety of molecular pathways including STAT3, Wnt/ß-catenin, Sonic Hedgehog, Gli1 and NF-κB undergo down-regulation by dietary agents in suppressing CSC features. Upon exposure to natural agents, a significant decrease occurs in levels of CSC markers including CD44, CD133, ALDH1, Oct4 and Nanog to impair cancer stemness. Furthermore, CSC suppression by dietary agents can enhance sensitivity of tumors to chemotherapy and radiotherapy. In addition to in vitro studies, as well as experiments on the different preclinical models have shown capacity of natural products in suppressing cancer stemness. Furthermore, use of nanostructures for improving therapeutic impact of dietary agents is recommended to rapidly translate preclinical findings for clinical use.


Assuntos
Neoplasias/dietoterapia , Células-Tronco Neoplásicas , Compostos Fitoquímicos/uso terapêutico , Fitoterapia , Extratos Vegetais/uso terapêutico , Humanos , Neoplasias/tratamento farmacológico
14.
Food Chem Toxicol ; 157: 112576, 2021 Nov.
Artigo em Inglês | MEDLINE | ID: mdl-34571052

RESUMO

Cancer is the second leading cause of death worldwide. Majority of recent research efforts in the field aim to address why cancer resistance to therapy develops and how to overcome or prevent it. In line with this, novel anti-cancer compounds are desperately needed for chemoresistant cancer cells. Phytochemicals, in view of their pharmacological activities and capacity to target various molecular pathways, are of great interest in the development of therapeutics against cancer. Plant-derived-natural products have poor bioavailability which restricts their anti-tumor activity. Gallic acid (GA) is a phenolic acid exclusively found in natural sources such as gallnut, sumac, tea leaves, and oak bark. In this review, we report on the most recent research related to anti-tumor activities of GA in various cancers with a focus on its underlying molecular mechanisms and cellular pathwaysthat that lead to apoptosis and migration of cancer cells. GA down-regulates the expression of molecular pathways involved in cancer progression such as PI3K/Akt. The co-administration of GA with chemotherapeutic agents shows improvements in suppressing cancer malignancy. Various nano-vehicles such as organic- and inorganic nano-materials have been developed for targeted delivery of GA at the tumor site. Here, we suggest that nano-vehicles improve GA bioavailability and its ability for tumor suppression.


Assuntos
Antineoplásicos Fitogênicos/uso terapêutico , Ácido Gálico/uso terapêutico , Sistemas de Liberação de Fármacos por Nanopartículas , Neoplasias/tratamento farmacológico , Animais , Antineoplásicos Fitogênicos/administração & dosagem , Apoptose/efeitos dos fármacos , Ácido Gálico/administração & dosagem , Humanos , Sistemas de Liberação de Fármacos por Nanopartículas/administração & dosagem , Sistemas de Liberação de Fármacos por Nanopartículas/uso terapêutico
15.
Pharmacol Res ; 171: 105759, 2021 09.
Artigo em Inglês | MEDLINE | ID: mdl-34245864

RESUMO

As a phenolic acid compound, caffeic acid (CA) can be isolated from different sources such as tea, wine and coffee. Caffeic acid phenethyl ester (CAPE) is naturally occurring derivative of CA isolated from propolis. This medicinal plant is well-known due to its significant therapeutic impact including its effectiveness as hepatoprotective, neuroprotective and anti-diabetic agent. Among them, anti-tumor activity of CA has attracted much attention, and this potential has been confirmed both in vitro and in vivo. CA can induce apoptosis in cancer cells via enhancing ROS levels and impairing mitochondrial function. Molecular pathways such as PI3K/Akt and AMPK with role in cancer progression, are affected by CA and its derivatives in cancer therapy. CA is advantageous in reducing aggressive behavior of tumors via suppressing metastasis by inhibiting epithelial-to-mesenchymal transition mechanism. Noteworthy, CA and CAPE can promote response of cancer cells to chemotherapy, and sensitize them to chemotherapy-mediated cell death. In order to improve capacity of CA and CAPE in cancer suppression, it has been co-administered with other anti-tumor compounds such as gallic acid and p-coumaric acid. Due to its poor bioavailability, nanocarriers have been developed for enhancing its ability in cancer suppression. These issues have been discussed in the present review with a focus on molecular pathways to pave the way for rapid translation of CA for clinical use.


Assuntos
Antineoplásicos Fitogênicos/administração & dosagem , Ácidos Cafeicos/administração & dosagem , Neoplasias/tratamento farmacológico , Animais , Antineoplásicos Fitogênicos/farmacocinética , Ácidos Cafeicos/farmacocinética , Humanos , Neoplasias/metabolismo
16.
Molecules ; 26(8)2021 Apr 19.
Artigo em Inglês | MEDLINE | ID: mdl-33921908

RESUMO

The failure of chemotherapy is a major challenge nowadays, and in order to ensure effective treatment of cancer patients, it is of great importance to reveal the molecular pathways and mechanisms involved in chemoresistance. Cisplatin (CP) is a platinum-containing drug with anti-tumor activity against different cancers in both pre-clinical and clinical studies. However, drug resistance has restricted its potential in the treatment of cancer patients. CP can promote levels of free radicals, particularly reactive oxygen species (ROS) to induce cell death. Due to the double-edged sword role of ROS in cancer as a pro-survival or pro-death mechanism, ROS can result in CP resistance. In the present review, association of ROS with CP sensitivity/resistance is discussed, and in particular, how molecular pathways, both upstream and downstream targets, can affect the response of cancer cells to CP chemotherapy. Furthermore, anti-tumor compounds, such as curcumin, emodin, chloroquine that regulate ROS and related molecular pathways in increasing CP sensitivity are described. Nanoparticles can provide co-delivery of CP with anti-tumor agents and by mediating photodynamic therapy, and induce ROS overgeneration to trigger CP sensitivity. Genetic tools, such as small interfering RNA (siRNA) can down-regulate molecular pathways such as HIF-1α and Nrf2 to promote ROS levels, leading to CP sensitivity. Considering the relationship between ROS and CP chemotherapy, and translating these findings to clinic can pave the way for effective treatment of cancer patients.


Assuntos
Antineoplásicos/uso terapêutico , Cisplatino/uso terapêutico , Espécies Reativas de Oxigênio/metabolismo , Animais , Apoptose/efeitos dos fármacos , Sobrevivência Celular/efeitos dos fármacos , Resistencia a Medicamentos Antineoplásicos , Humanos , Transdução de Sinais/efeitos dos fármacos
17.
Adv Exp Med Biol ; 1308: 137-160, 2021.
Artigo em Inglês | MEDLINE | ID: mdl-33861443

RESUMO

Programmed cell death processes such as apoptosis and autophagy strongly contribute to the onset and progression of cancer. Along with these lines, modulation of cell death mechanisms to combat cancer cells and elimination of resistance to apoptosis is of great interest. It appears that modulation of autophagy and endoplasmic reticulum (ER) stress with specific agents would be beneficial in the treatment of several disorders. Interestingly, it has been suggested that herbal natural products may be suitable candidates for the modulation of these processes due to few side effects and significant therapeutic potential. Ginsenosides are derivatives of ginseng and exert modulatory effects on the molecular mechanisms associated with autophagy and ER stress. Ginsenosides act as smart phytochemicals that confer their effects by up-regulating ATG proteins and converting LC3-I to -II, which results in maturation of autophagosomes. Not only do ginsenosides promote autophagy but they also possess protective and therapeutic properties due to their capacity to modulate ER stress and up- and down-regulate and/or dephosphorylate UPR transducers such as IRE1, PERK, and ATF6. Thus, it would appear that ginsenosides are promising agents to potentially restore tissue malfunction and possibly eliminate cancer.


Assuntos
Estresse do Retículo Endoplasmático , Ginsenosídeos , Apoptose , Autofagossomos , Autofagia , Ginsenosídeos/farmacologia , Ginsenosídeos/uso terapêutico
18.
J Pharmacopuncture ; 24(1): 1-13, 2021 Mar 31.
Artigo em Inglês | MEDLINE | ID: mdl-33833895

RESUMO

Flavonoids consist a wide range of naturally occurring compounds which are exclusively found in different fruits and vegetables. These medicinal herbs have a number of favourable biological and therapeutic activities such as antioxidant, neuroprotective, renoprotective, anti-inflammatory, anti-diabetic and anti-tumor. Troxerutin, also known as vitamin P4, is a naturally occurring flavonoid which is isolated from tea, coffee and cereal grains as well as vegetables. It has a variety of valuable pharmacological and therapeutic activities including antioxidant, anti-inflammatory, anti-diabetic and anti-tumor. These pharmacological impacts have been demonstrated in in vitro and in vivo studies. Also, clinical trials have revealed the efficacy of troxerutin for management of phlebocholosis and hemorrhoidal diseases. In the present review, we focus on the therapeutic effects and biological activities of troxerutin as well as its molecular signaling pathways.

19.
Biomed Pharmacother ; 136: 111214, 2021 Apr.
Artigo em Inglês | MEDLINE | ID: mdl-33450488

RESUMO

Cardiovascular diseases (CVDs) are one of the leading causes of the most considerable mortality globally, and it has been tried to find the molecular mechanisms and design new drugs that triggered the molecular target. Curcumin is the main ingredient of Curcuma longa (turmeric) that has been used in traditional medicine for treating several diseases for years. Numerous investigations have indicated the beneficial effect of Curcumin in modulating multiple signaling pathways involved in oxidative stress, inflammation, apoptosis, and proliferation. The cardiovascular protective effects of Curcumin against CVDs have been indicated in several studies. In the current review study, we provided novel information on Curcumin's protective effects against various CVDs and potential molecular signaling targets of Curcumin. Nonetheless, more studies should be performed to discover the exact molecular target of Curcumin against CVDs.


Assuntos
Fármacos Cardiovasculares/uso terapêutico , Doenças Cardiovasculares/tratamento farmacológico , Sistema Cardiovascular/efeitos dos fármacos , Curcumina/uso terapêutico , Transdução de Sinais/efeitos dos fármacos , Animais , Doenças Cardiovasculares/metabolismo , Doenças Cardiovasculares/fisiopatologia , Sistema Cardiovascular/metabolismo , Sistema Cardiovascular/fisiopatologia , Humanos , Terapia de Alvo Molecular
20.
Curr Mol Med ; 21(10): 832-849, 2021.
Artigo em Inglês | MEDLINE | ID: mdl-33397259

RESUMO

Diabetes mellitus (DM) is a chronic disease and a threatening problem for world health. Allopathic medications are not efficient enough in controlling DM and its complications. Therefore, much attention has been directed towards the traditional medicine system. Plant derived-natural compounds with medicinal properties play an essential role in DM management and treatment. Artemisia is a varied and widespread genus of the family Asteraceae, which has more than 500 species with beneficial economic and therapeutic significance. Electronic databases such as Science Direct, Scopus, Pubmed, Web of Science, medRixv, and Wiley were used to search scientific literature. In folklore medicine, Artemisia species have been widely utilized for diabetes management. Molecular investigations have revealed that the NF-κB suppression, Notch 1 inhibition, cell cycle stop at S+G2/M-phase, enhanced Bax protein concentrations, mitochondrial membrane potential attenuation, activation of p53 and caspase, Bcl-2 regulation, and ROS formation are crucial mechanisms that could be targeted via various Artemisia species. Anti-diabetic effects of single or multiple doses of alcoholic and aqueous extracts of Artemisia species are due to the presence of bioactive compounds, and they are completely efficient in lowering levels of blood glucose in experimental examinations. In spite of the available anti-diabetic drugs, therapeutic agents obtained from the mentioned plants have been used for the treatment of this disease and its complications with less adverse impacts. Taken together, multiple lines of evidence indicated that Artemisia species could be introduced as a potential therapeutic candidate in the treatment and management of diabetes.


Assuntos
Artemisia/química , Diabetes Mellitus , Hipoglicemiantes , Fitoterapia , Extratos Vegetais , Diabetes Mellitus/tratamento farmacológico , Diabetes Mellitus/metabolismo , Humanos , Hipoglicemiantes/química , Hipoglicemiantes/uso terapêutico , Extratos Vegetais/química , Extratos Vegetais/uso terapêutico
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