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Gupta SRR, Mittal P, Kundu B, Singh A, Singh IK. Silibinin: an inhibitor for a high-expressed BCL-2A1/BFL1 protein, linked with poor prognosis in breast cancer. J Biomol Struct Dyn 2023:1-11. [PMID: 37837418 DOI: 10.1080/07391102.2023.2268176] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2023] [Accepted: 09/29/2023] [Indexed: 10/16/2023]
Abstract
Breast cancer (BC) accounts for 30% of all diagnosed cases of cancer in women and remains a leading cause of cancer-related deaths among women worldwide. The current study looks for a protein from the anti-apoptotic/pro-survival BCL-2 family whose overexpression reduces survivability in BC patients and a potential inhibitor for the protein. We found BCL-2A1/BFL1 protein with high expression linked to low survivability in BC. The protein shows prognosis in 8 out of 29 categories, whereas no other family member manifests this property. Out of 7379 compounds, three small molecules (CHEMBL9509, CHEMBL2104550 and CHEMBL3545011) form an H-bond with BCL-2A1/BFL1 protein's unique residue Cys55. Of the three small molecules, we found CHEMBL9509 (Silibinin) to be a potent inhibitor. The compound forms a stable H-bond with the residue Cys55 with the lowest binding energy compared to the other two compounds. It remains stable in the BH3 binding region for more than 100 ns, whereas the other two detach from the region. Additionally, the compound is found to be better than Venetoclax and Nematoclax. We firmly believe in the compound CHEMBL9509 potency to halt BC's progression by inhibiting the BCL-2A1/BFL1 protein, increasing patients' survivability.Communicated by Ramaswamy H. Sarma.
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Affiliation(s)
- Shradheya R R Gupta
- Molecular Biology Research Laboratory, Department of Zoology, Deshbandhu College, University of Delhi, New Delhi, India
| | - Pooja Mittal
- Molecular Biology Research Laboratory, Department of Zoology, Deshbandhu College, University of Delhi, New Delhi, India
- Norris Comprehensive Cancer Center, Division of Medical Oncology, University of Southern California, Los Angeles, USA
| | - Bishwajit Kundu
- Kusuma School of Biological Science, Indian Institute of Technology Delhi, New Delhi, India
| | - Archana Singh
- Department of Plant Molecular Biology, University of Delhi (South Campus), New Delhi, India
| | - Indrakant K Singh
- Molecular Biology Research Laboratory, Department of Zoology, Deshbandhu College, University of Delhi, New Delhi, India
- Norris Comprehensive Cancer Center, Division of Medical Oncology, University of Southern California, Los Angeles, USA
- Institute of Eminence, Delhi School of Public Health, University of Delhi, Delhi, India
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2
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Almehdi AM, Soliman SSM, El-Shorbagi ANA, Westwell AD, Hamdy R. Design, Synthesis, and Potent Anticancer Activity of Novel Indole-Based Bcl-2 Inhibitors. Int J Mol Sci 2023; 24:14656. [PMID: 37834104 PMCID: PMC10572575 DOI: 10.3390/ijms241914656] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2023] [Revised: 08/16/2023] [Accepted: 08/20/2023] [Indexed: 10/15/2023] Open
Abstract
The Bcl-2 family plays a crucial role in regulating cell apoptosis, making it an attractive target for cancer therapy. In this study, a series of indole-based compounds, U1-6, were designed, synthesized, and evaluated for their anticancer activity against Bcl-2-expressing cancer cell lines. The binding affinity, safety profile, cell cycle arrest, and apoptosis effects of the compounds were tested. The designed compounds exhibited potent inhibitory activity at sub-micromolar IC50 concentrations against MCF-7, MDA-MB-231, and A549 cell lines. Notably, U2 and U3 demonstrated the highest activity, particularly against MCF-7 cells. Respectively, both U2 and U3 showed potential BCL-2 inhibition activity with IC50 values of 1.2 ± 0.02 and 11.10 ± 0.07 µM using an ELISA binding assay compared with 0.62 ± 0.01 µM for gossypol, employed as a positive control. Molecular docking analysis suggested stable interactions of compound U2 at the Bcl-2 binding site through hydrogen bonding, pi-pi stacking, and hydrophobic interactions. Furthermore, U2 demonstrated significant induction of apoptosis and cell cycle arrest at the G1/S phase. Importantly, U2 displayed a favourable safety profile on HDF human dermal normal fibroblast cells at 10-fold greater IC50 values compared with MDA-MB-231 cells. These findings underscore the therapeutic potential of compound U2 as a Bcl-2 inhibitor and provide insights into its molecular mechanisms of action.
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Affiliation(s)
- Ahmed M. Almehdi
- College of Sciences, University of Sharjah, Sharjah P.O. Box 27272, United Arab Emirates;
- Research Institute for Science and Engineering (RISE), University of Sharjah, Sharjah P.O. Box 27272, United Arab Emirates
| | - Sameh S. M. Soliman
- Research Institute for Medical and Health Sciences, University of Sharjah, Sharjah P.O. Box 27272, United Arab Emirates;
- College of Pharmacy, University of Sharjah, Sharjah P.O. Box 27272, United Arab Emirates;
| | | | - Andrew D. Westwell
- School of Pharmacy and Pharmaceutical Sciences, Cardiff University, Redwood Building, Cardiff CF10 3NB, UK
| | - Rania Hamdy
- Research Institute for Science and Engineering (RISE), University of Sharjah, Sharjah P.O. Box 27272, United Arab Emirates
- Research Institute for Medical and Health Sciences, University of Sharjah, Sharjah P.O. Box 27272, United Arab Emirates;
- Faculty of Pharmacy, Zagazig University, Zagazig 44519, Egypt
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3
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He W, Li X, Morsch M, Ismail M, Liu Y, Rehman FU, Zhang D, Wang Y, Zheng M, Chung R, Zou Y, Shi B. Brain-Targeted Codelivery of Bcl-2/Bcl-xl and Mcl-1 Inhibitors by Biomimetic Nanoparticles for Orthotopic Glioblastoma Therapy. ACS Nano 2022; 16:6293-6308. [PMID: 35353498 DOI: 10.1021/acsnano.2c00320] [Citation(s) in RCA: 31] [Impact Index Per Article: 15.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
Glioblastoma (GBM) is among the most treatment-resistant solid tumors and often recurrs after resection. One of the mechanisms through which GBM escapes various treatment modalities is the overexpression of anti-apoptotic Bcl-2 family proteins (e.g., Bcl-2, Bcl-xl, and Mcl-1) in tumor cells. Small-molecule inhibitors such as ABT-263 (ABT), which can promote mitochondrial-mediated cell apoptosis by selectively inhibiting the function of Bcl-2 and Bcl-xl, have been proven to be promising anticancer agents in clinical trials. However, the therapeutic prospects of ABT for GBM treatment are hampered by its limited blood-brain barrier (BBB) penetration, dose-dependent thrombocytopenia, and the drug resistance driven by Mcl-1, which is overexpressed in GBM cells and further upregulated upon treatment with ABT. Herein, we reported that the Mcl-1-specific inhibitor A-1210477 (A12) can act synergistically with ABT to induce potent cell apoptosis in U87 MG cells, drug-resistant U251 cells, and patient-derived GBM cancer stem cells. We further designed a biomimetic nanomedicine, based on the apolipoprotein E (ApoE) peptide-decorated red blood cell membrane and pH-sensitive dextran nanoparticles, for the brain-targeted delivery of ABT and A12. The synergistic anti-GBM effect was retained after encapsulation in the nanomedicine. Additionally, the obtained nanomedicine possessed good biocompatibility, exhibited efficient BBB penetration, and could effectively suppress tumor growth and prolong the survival time of mice bearing orthotopic GBM xenografts without inducing detectable adverse effects.
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Affiliation(s)
| | | | - Marco Morsch
- Center for Motor Neuron Disease Research, Macquarie Medical School, Faculty of Medicine, Health and Human Sciences, Macquarie University, Sydney, New South Wales 2109, Australia
| | | | | | | | | | | | | | - Roger Chung
- Center for Motor Neuron Disease Research, Macquarie Medical School, Faculty of Medicine, Health and Human Sciences, Macquarie University, Sydney, New South Wales 2109, Australia
| | - Yan Zou
- Center for Motor Neuron Disease Research, Macquarie Medical School, Faculty of Medicine, Health and Human Sciences, Macquarie University, Sydney, New South Wales 2109, Australia
| | - Bingyang Shi
- Center for Motor Neuron Disease Research, Macquarie Medical School, Faculty of Medicine, Health and Human Sciences, Macquarie University, Sydney, New South Wales 2109, Australia
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Zhang M, Wang J, Li M. [Menthol enhances interleukin-13-induced synthesis and secretion of mucin 5AC in human bronchial epithelial cells]. Nan Fang Yi Ke Da Xue Xue Bao 2020; 40:1432-1438. [PMID: 33118512 DOI: 10.12122/j.issn.1673-4254.2020.10.08] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
Abstract
OBJECTIVE To investigate the effect of interleukin (IL) -13 combined with cold stimulation on synthesis and secretion of mucin (MUC) 5AC in human bronchial epithelial cell line 16HBE and explore the role of transient receptor potential 8 (TRPM8) and anti-apoptotic factor B-cell lymphoblast-2 (Bcl-2) in this process. METHODS 16HBE cells were stimulated with 10 ng/mL IL-13, 1 mmol/L menthol, or both (1 mmol/L menthol was added after 6 days of IL-13 stimulation), and the changes in the expression of MUC5AC, intracellular Ca2+ concentration and Bcl-2 expression were evaluated. The effects of ABT-263 (a Bcl-2 inhibitor) and BCTC (a TRPM8 ion channel inhibitor), alone or in combination, on MUC5AC expression in the cells were tested, and the changes in intracellular Ca2+ and Bcl-2 expression following BCTC treatment were observed. The cell viability was assessed using CCK-8 assay, the mRNA expressions of MUC5AC and Bcl-2 were detected with real-time quantitative PCR, the level of MUC5AC in the culture medium was measured with ELISA, and the intracellular Ca2+ fluorescence intensity was determined with flow cytometry. RESULTS The mRNA and protein expressions of MUC5AC increased significantly in 16HBE cells following stimulation with IL-13, menthol, and both (P < 0.05), and were the highest in the combined treatment group with its peak level occurred at 24 h (P < 0.01). The intracellular Ca2+ fluorescence intensity and Bcl-2 mRNA expression were also increased in 16HBE cells after the stimulations (P < 0.05), and the increments were the most obvious in the combined treatment group (P < 0.01). Treatment with BCTC significantly lowered intracellular Ca2+ fluorescence intensity and the expressions of Bcl-2 and MUC5AC mRNA and protein in the cells stimulated with menthol or with both IL-13 and menthol (P < 0.05), but caused no significant changes in IL-13-stimulated cells (P > 0.05). Treatment with ABT-263 significantly lowered the mRNA and protein expressions of MUC5AC in the cells stimulated with IL-13 and menthol either alone or in combination (P < 0.05). CONCLUSIONS Menthol combined with IL-13 produces a synergistic effect to promote the synthesis and secretion of MUC5AC in 16HBE cells possibly by activating TRPM8 receptor to upregulate the expression of Bcl-2.
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Affiliation(s)
- Mingyang Zhang
- Department of Respiratory Medicine, Second Affiliated Hospital, Chongqing Medical University, Chongqing 400010, China
| | - Jing Wang
- Department of Respiratory Medicine, Second Affiliated Hospital, Chongqing Medical University, Chongqing 400010, China
| | - Minchao Li
- Department of Respiratory Medicine, Second Affiliated Hospital, Chongqing Medical University, Chongqing 400010, China
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健愉 冯, 玉山 朱, 陈 权, 凌 林, Jianyu F, Yushan Z, Quan C, Jialing L. [Physiological Function and Structural Basis of Bcl-2 Family Proteins]. Zhongguo Xi Bao Sheng Wu Xue Xue Bao 2019; 41:1477-1489. [PMID: 34249113 PMCID: PMC8265309] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
Apoptosis is an important biological process that plays a key role in the regulation of cell fate and homeostasis. The B-cell lymphoma-2 (Bcl-2) family proteins are important regulators of the apoptotic pathway, and their dysfunction is associated with a variety of diseases, including cancer, neurodegenerative and autoimmune diseases. In the past decade, a large number of research work on the physiological functions and atomic structures of Bcl-2 family proteins have been reported, which has deepened our understanding of the molecular mechanism and pathological significance of Bcl-2 family proteins. Recently, new drugs targeting different Bcl-2 proteins have been developed and used in clinics or tested in clinical trials. However, the complexity and diversity in functions and structures of Bcl-2 family have left many unsolved problems. This article summarizes current knowledge of the structure and function of Bcl-2 family proteins and discusses the pharmacological significance of Bcl-2 proteins as effective therapeutic targets.
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Affiliation(s)
| | | | | | - 林家 凌
- 俄克拉荷马大学健康科学中心生物化学与分子生物学系, 俄克拉何马城 73126-0901
| | - Feng Jianyu
- College of Life Sciences, Nankai University, Tianjin 300074, China
| | - Zhu Yushan
- College of Life Sciences, Nankai University, Tianjin 300074, China
| | - Chen Quan
- College of Life Sciences, Nankai University, Tianjin 300074, China
| | - Lin Jialing
- Department of Biochemistry and Molecular Biology, University of Oklahoma Health Sciences Center, Oklahoma 73126, USA
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6
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Fan L, Tian M, Liu Y, Deng Y, Liao Z, Xu J. Salicylate •Phenanthroline copper (II) complex induces apoptosis in triple-negative breast cancer cells. Oncotarget 2018; 8:29823-29832. [PMID: 28415735 PMCID: PMC5444706 DOI: 10.18632/oncotarget.16161] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2016] [Accepted: 03/03/2017] [Indexed: 12/31/2022] Open
Abstract
In this study, we investigated anti-tumor activity and associated molecular mechanism of action of Salicylate ●Phenanthroline Copper (II) Complex in triple-negative breast cancer. Salicylate ●Phenanthroline Copper (II) Complex inhibited the growth of four breast cancer cell lines (MCF-7, T47D, MDA-MB-231 and BT-20) and induced apoptosis in a concentration-dependent manner. The effect was more profound in MDA-MB-231 and BT-20 triple-negative breast cancer cell lines. Western blot showed that the expression of the apoptosis-related protein Bcl-2, Bcl-xl and survivin was significantly reduced in MDA-MB-231 after treatment with Salicylate ●Phenanthroline Copper (II) Complex. In vivo, Salicylate ●Phenanthroline Copper (II) Complex administration significantly attenuated tumor growth of MDA-MB-231 xenografts, and the expression levels of Bcl-2, Bcl-xL and survivin were reduced as measured by immunohistochemical staining. These data suggest that Salicylate ●Phenanthroline Copper (II) Complex is a promising novel therapeutic drug for triple-negative breast cancer and warrants further study.
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Affiliation(s)
- Limei Fan
- School of Medicine, Jianghan University, Wuhan, Hubei 430056, China.,Key Laboratory of Optoelectronic Chemical Materials and Devices, Ministry of Education, Jianghan University, Wuhan, Hubei 430056, China
| | - Muyou Tian
- Department of Radiation and Medical Oncology, Zhongnan Hospital, Wuhan University, Wuhan, Hubei 430071, China
| | - Yunyi Liu
- School of Medicine, Jianghan University, Wuhan, Hubei 430056, China.,Key Laboratory of Optoelectronic Chemical Materials and Devices, Ministry of Education, Jianghan University, Wuhan, Hubei 430056, China
| | - Ying Deng
- School of Medicine, Jianghan University, Wuhan, Hubei 430056, China.,Key Laboratory of Optoelectronic Chemical Materials and Devices, Ministry of Education, Jianghan University, Wuhan, Hubei 430056, China
| | - Zhengkai Liao
- Department of Radiation and Medical Oncology, Zhongnan Hospital, Wuhan University, Wuhan, Hubei 430071, China.,Hubei Key Laboratory of Tumor Biological Behavior, Wuhan University, Wuhan, Hubei 430071, China
| | - Jinhua Xu
- School of Medicine, Jianghan University, Wuhan, Hubei 430056, China.,Key Laboratory of Optoelectronic Chemical Materials and Devices, Ministry of Education, Jianghan University, Wuhan, Hubei 430056, China
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7
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Managit C, Sakurai H, Saiki I. Ethanolic extract of Thevetia peruviana flowers enhances TNF-α and TRAIL-induced apoptosis of human cervical cancer cells via intrinsic and extrinsic pathways. Oncol Lett 2017; 13:2791-2798. [PMID: 28454468 DOI: 10.3892/ol.2017.5748] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2015] [Accepted: 09/15/2016] [Indexed: 11/05/2022] Open
Abstract
Tumor necrosis factor-α (TNF-α) and TNF-related apoptosis-inducing ligand (TRAIL) are promising candidates for cancer treatment due to their ability to induce apoptosis through death receptor stimulation. However, their usage may be limited due to the resistance of cancer cells to TNF-α- and TRAIL-induced apoptosis. Currently, there is interest in screening for natural products that can sensitize cancer cells to TNF-α- and TRAIL-induced apoptosis for their use in combination with TNF-α or TRAIL. It was previously reported that the bark extract of Thevetia peruviana showed a reversal effect on TRAIL-resistance in human gastric adenocarcinoma cell lines. In the present study, the effects of the ethanolic extract of T. peruviana flowers on TNF-α- and TRAIL-induced apoptosis of human cervical cancer HeLa cells were investigated in vitro by determining cell viability and apoptosis using a WST-1 cell proliferation assay and immunoblot analysis, respectively. The ethanolic extract of T. peruviana flowers promoted TNF-α and TRAIL-mediated cell death through the activation of the caspase cascade, poly(ADP-ribose) polymerase and BH3-interacting domain death agonist cleavage. Combined treatment using the extract plus TNF-α resulted in downregulation of anti-apoptotic protein, including myeloid cell leukemia sequence-1, B-cell lymphoma-extra large (Bcl-XL), X-linked inhibitor of apoptosis protein and survivin, while the combined treatment with TRAIL downregulated Bcl-XL. Thus, the ethanolic extract of T. peruviana flowers has potential in sensitizing the TNF-α- and TRAIL-induced apoptosis of HeLa cells via the intrinsic and extrinsic pathways.
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Affiliation(s)
- Chittima Managit
- Department of Pharmaceutical Technology, Faculty of Pharmacy, Srinakharinwirot University, Nakhonnayok 26120, Thailand
| | - Hiroaki Sakurai
- Department of Cancer Cell Biology, Graduate School of Medicine and Pharmaceutical Sciences, University of Toyama, Toyama 930-0194, Japan
| | - Ikuo Saiki
- Division of Pathogenic Biochemistry, Institute of Natural Medicine, University of Toyama, Toyama 930-0194, Japan
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Chuffa LGA, Alves MS, Martinez M, Camargo ICC, Pinheiro PFF, Domeniconi RF, Júnior LAL, Martinez FE. Apoptosis is triggered by melatonin in an in vivo model of ovarian carcinoma. Endocr Relat Cancer 2016; 23:65-76. [PMID: 26555801 DOI: 10.1530/erc-15-0463] [Citation(s) in RCA: 38] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 11/09/2015] [Indexed: 12/20/2022]
Abstract
Apoptosis plays an important role in the treatment of cancer, and targeting apoptosis-related molecules in ovarian cancer (OC) is of great therapeutic value. Melatonin (Mel) is an indoleamine displaying several anti-cancer properties and has been reported to modulate apoptosis signaling in multiple tumor subtypes. We investigated OC and the role of Mel therapy on the pro-apoptotic (p53, BAX, caspase-3, and cleaved caspase-3) and anti-apoptotic (Bcl-2 and survivin) proteins in an ethanol (EtOH)-preferring rat model. To induce OC, the left ovary was injected directly with a single dose of 100 μg 7,12-dimethylbenz(a)anthracene dissolved in 10 μl of sesame oil under the bursa. Right ovaries were used as sham-surgery controls. After developing OC, half of the animals received i.p. injections of Mel (200 μg/100 g BW per day) for 60 days. Body weight gain, EtOH consumption, and energy intake were unaffected by the treatments. Interestingly, absolute and relative OC masses showed a significant reduction after Mel therapy, regardless of EtOH consumption. To accomplish OC-related apoptosis, we first observed that p53, BAX, caspase-3, and cleaved caspase-3 were downregulated in OC tissue while Bcl-2 and survivin were overexpressed. Notably, Mel therapy and EtOH intake promoted apoptosis along with the upregulation of p53, BAX, and cleaved caspase-3. Fragmentation of DNA observed by TUNEL-positive nuclei was also enhanced following Mel treatment. In addition, Bcl-2 was downregulated by the EtOH intake and lower survivin levels were observed after Mel therapy. Taken together, these results suggest that Mel induce apoptosis in OC cells of EtOH-preferring animals.
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Affiliation(s)
- Luiz Gustavo A Chuffa
- Department of AnatomyInstitute of Biosciences of Botucatu, UNESP - Universidade Estadual Paulista, PO Box 18618-970, Rubião Júnior, s/n, Botucatu, São Paulo 510, BrazilDepartment of Morphology and PathologyUFSCar - Universidade Federal de São Carlos, São Carlos, São Paulo 13565-905, BrazilDepartment of Biological SciencesFaculty of Sciences and Letters, UNESP - Universidade Estadual Paulista, Assis, São Paulo 19806-900, Brazil
| | - Michelly S Alves
- Department of AnatomyInstitute of Biosciences of Botucatu, UNESP - Universidade Estadual Paulista, PO Box 18618-970, Rubião Júnior, s/n, Botucatu, São Paulo 510, BrazilDepartment of Morphology and PathologyUFSCar - Universidade Federal de São Carlos, São Carlos, São Paulo 13565-905, BrazilDepartment of Biological SciencesFaculty of Sciences and Letters, UNESP - Universidade Estadual Paulista, Assis, São Paulo 19806-900, Brazil
| | - Marcelo Martinez
- Department of AnatomyInstitute of Biosciences of Botucatu, UNESP - Universidade Estadual Paulista, PO Box 18618-970, Rubião Júnior, s/n, Botucatu, São Paulo 510, BrazilDepartment of Morphology and PathologyUFSCar - Universidade Federal de São Carlos, São Carlos, São Paulo 13565-905, BrazilDepartment of Biological SciencesFaculty of Sciences and Letters, UNESP - Universidade Estadual Paulista, Assis, São Paulo 19806-900, Brazil
| | - Isabel Cristina C Camargo
- Department of AnatomyInstitute of Biosciences of Botucatu, UNESP - Universidade Estadual Paulista, PO Box 18618-970, Rubião Júnior, s/n, Botucatu, São Paulo 510, BrazilDepartment of Morphology and PathologyUFSCar - Universidade Federal de São Carlos, São Carlos, São Paulo 13565-905, BrazilDepartment of Biological SciencesFaculty of Sciences and Letters, UNESP - Universidade Estadual Paulista, Assis, São Paulo 19806-900, Brazil
| | - Patricia F F Pinheiro
- Department of AnatomyInstitute of Biosciences of Botucatu, UNESP - Universidade Estadual Paulista, PO Box 18618-970, Rubião Júnior, s/n, Botucatu, São Paulo 510, BrazilDepartment of Morphology and PathologyUFSCar - Universidade Federal de São Carlos, São Carlos, São Paulo 13565-905, BrazilDepartment of Biological SciencesFaculty of Sciences and Letters, UNESP - Universidade Estadual Paulista, Assis, São Paulo 19806-900, Brazil
| | - Raquel F Domeniconi
- Department of AnatomyInstitute of Biosciences of Botucatu, UNESP - Universidade Estadual Paulista, PO Box 18618-970, Rubião Júnior, s/n, Botucatu, São Paulo 510, BrazilDepartment of Morphology and PathologyUFSCar - Universidade Federal de São Carlos, São Carlos, São Paulo 13565-905, BrazilDepartment of Biological SciencesFaculty of Sciences and Letters, UNESP - Universidade Estadual Paulista, Assis, São Paulo 19806-900, Brazil
| | - Luiz Antonio L Júnior
- Department of AnatomyInstitute of Biosciences of Botucatu, UNESP - Universidade Estadual Paulista, PO Box 18618-970, Rubião Júnior, s/n, Botucatu, São Paulo 510, BrazilDepartment of Morphology and PathologyUFSCar - Universidade Federal de São Carlos, São Carlos, São Paulo 13565-905, BrazilDepartment of Biological SciencesFaculty of Sciences and Letters, UNESP - Universidade Estadual Paulista, Assis, São Paulo 19806-900, Brazil
| | - Francisco Eduardo Martinez
- Department of AnatomyInstitute of Biosciences of Botucatu, UNESP - Universidade Estadual Paulista, PO Box 18618-970, Rubião Júnior, s/n, Botucatu, São Paulo 510, BrazilDepartment of Morphology and PathologyUFSCar - Universidade Federal de São Carlos, São Carlos, São Paulo 13565-905, BrazilDepartment of Biological SciencesFaculty of Sciences and Letters, UNESP - Universidade Estadual Paulista, Assis, São Paulo 19806-900, Brazil
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Wu L, Wang Q, Yao J, Jiang H, Xiao C, Wu F. MicroRNA let-7g and let-7i inhibit hepatoma cell growth concurrently via downregulation of the anti-apoptotic protein B-cell lymphoma-extra large. Oncol Lett 2014; 9:213-218. [PMID: 25435961 PMCID: PMC4247110 DOI: 10.3892/ol.2014.2706] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2014] [Accepted: 10/15/2014] [Indexed: 02/06/2023] Open
Abstract
Let-7 family members have been identified as tumor-suppressing microRNAs, which are important in human hepatocellular carcinoma (HCC). These family members may function differently as a result of different base sequences at the 3′end. The aim of this study was to determine the antitumor effects of miR-let-7g/i (let-7g/i) on HCC cells and to investigate whether let-7g and let-7i have a combinatorial effect on HCC. The expression levels of let-7g/i in hepatoma cells were determined by quantitative reverse transcription polymerase chain reaction. In addition, a 5-ethynyl-2′-deoxyuridine retention assay and flow cytometry analysis were used to detect the effect of let-7g/i on the proliferation and apoptosis of BEL-7402 cells, respectively. The expression of anti-apoptotic protein B-cell lymphoma-extra large (Bcl-xL) was analyzed using western blot analysis. The results revealed that the expression levels of let-7g/i were significantly decreased in HCC cell lines when compared with L-02 cells. Furthermore, the overexpression of let-7g/i significantly suppressed DNA replication, inhibited cell proliferation and promoted apoptosis of BEL-7402 hepatoma cells. The expression of the anti-apoptotic protein, Bcl-xL, was inhibited by the combined role of let-7g and let-7i. We hypothesize that let-7g and let-7i exhibit a concurrent effect to regulate cell proliferation and the apoptosis of hepatoma cells, and this function is mediated by the Bcl-xL protein.
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Affiliation(s)
- Lingjiao Wu
- State Key Laboratory for Diagnosis and Treatment of Infectious Diseases, The First Affiliated Hospital, Zhejiang University, Hangzhou, Zhejiang 310003, P.R. China
| | - Qiangfeng Wang
- Department of Surgical Oncology, The First Affiliated Hospital, Zhejiang University, Hangzhou, Zhejiang 310003, P.R. China
| | - Jian Yao
- State Key Laboratory for Diagnosis and Treatment of Infectious Diseases, The First Affiliated Hospital, Zhejiang University, Hangzhou, Zhejiang 310003, P.R. China
| | - Han Jiang
- Department of Surgical Oncology, The First Affiliated Hospital, Zhejiang University, Hangzhou, Zhejiang 310003, P.R. China
| | - Cheng Xiao
- Department of Surgical Oncology, The First Affiliated Hospital, Zhejiang University, Hangzhou, Zhejiang 310003, P.R. China
| | - Fusheng Wu
- Department of Surgical Oncology, The First Affiliated Hospital, Zhejiang University, Hangzhou, Zhejiang 310003, P.R. China
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