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Roy S, Das A, Bairagi A, Das D, Jha A, Srivastava AK, Chatterjee N. Mitochondria act as a key regulatory factor in cancer progression: Current concepts on mutations, mitochondrial dynamics, and therapeutic approach. MUTATION RESEARCH. REVIEWS IN MUTATION RESEARCH 2024; 793:108490. [PMID: 38460864 DOI: 10.1016/j.mrrev.2024.108490] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/26/2022] [Revised: 02/12/2024] [Accepted: 02/22/2024] [Indexed: 03/11/2024]
Abstract
The diversified impacts of mitochondrial function vs. dysfunction have been observed in almost all disease conditions including cancers. Mitochondria play crucial roles in cellular homeostasis and integrity, however, mitochondrial dysfunctions influenced by alterations in the mtDNA can disrupt cellular balance. Many external stimuli or cellular defects that cause cellular integrity abnormalities, also impact mitochondrial functions. Imbalances in mitochondrial activity can initiate and lead to accumulations of genetic mutations and can promote the processes of tumorigenesis, progression, and survival. This comprehensive review summarizes epigenetic and genetic alterations that affect the functionality of the mitochondria, with considerations of cellular metabolism, and as influenced by ethnicity. We have also reviewed recent insights regarding mitochondrial dynamics, miRNAs, exosomes that play pivotal roles in cancer promotion, and the impact of mitochondrial dynamics on immune cell mechanisms. The review also summarizes recent therapeutic approaches targeting mitochondria in anti-cancer treatment strategies.
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Affiliation(s)
- Sraddhya Roy
- Chittaranjan National Cancer Institute, 37 S. P. Mukherjee Road, Kolkata 700026, India
| | - Ananya Das
- Chittaranjan National Cancer Institute, 37 S. P. Mukherjee Road, Kolkata 700026, India
| | - Aparajita Bairagi
- Chittaranjan National Cancer Institute, 37 S. P. Mukherjee Road, Kolkata 700026, India
| | - Debangshi Das
- Chittaranjan National Cancer Institute, 37 S. P. Mukherjee Road, Kolkata 700026, India
| | - Ashna Jha
- Chittaranjan National Cancer Institute, 37 S. P. Mukherjee Road, Kolkata 700026, India
| | - Amit Kumar Srivastava
- CSIR-IICB Translational Research Unit Of Excellence, CN-6, Salt Lake, Sector - V, Kolkata 700091, India
| | - Nabanita Chatterjee
- Chittaranjan National Cancer Institute, 37 S. P. Mukherjee Road, Kolkata 700026, India.
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Network Toxicology Guided Mechanism Study on the Association between Thyroid Function and Exposures to Polychlorinated Biphenyls Mixture. BIOMED RESEARCH INTERNATIONAL 2022; 2022:2394398. [PMID: 36203481 PMCID: PMC9532094 DOI: 10.1155/2022/2394398] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/11/2021] [Revised: 08/03/2022] [Accepted: 09/08/2022] [Indexed: 11/17/2022]
Abstract
Polychlorinated biphenyls (PCBs) are persistent and highly toxic pollutants, which can accumulate in organisms and produce toxic effects, especially damaging the function of thyroid hormones. So far, the molecular mechanism of PCBs mixture and their metabolites interfering with thyroid hormones has not been studied thoroughly except for individual compounds. In this study, PubMed, Web of Science, and STITCH databases were used to search PCBs and their corresponding target proteins. The intersection of PCBs and thyroid hormone dysfunction target proteins was obtained from GeneCards. The “compounds-targets-pathways” network was constructed by Cytoscape software. And KEGG and Go analyses were performed for key targets. Finally, molecular docking was used to verify the binding effect. Four major active components, five key targets, and 10 kernel pathways were successfully screened by constructing the network. Functional enrichment analysis showed that the interference was mediated by cancer, proteoglycans, PI3K-Akt, thyroid hormone, and FoxO signaling pathways. The molecular docking results showed that the binding energies were less than -5 kcal·mol-1. PCBs and their metabolites may act on the key targets of MAPK3, MAPK1, RXRA, PIK3R1, and TP53. The toxic effect of sulfated and methyl sulfone PCBs is greater. The method of screening targets based on the simultaneous action of multiple PCBs can provide a reference for other research. The targets were not found in previous metabolite toxicity studies. It also provides a bridge for the toxic effects and experimental research of PCBs and their metabolites in the future.
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Das SK, Roy S, Das A, Chowdhury A, Chatterjee N, Bhaumik A. A conjugated 2D covalent organic framework as a drug delivery vehicle towards triple negative breast cancer malignancy. NANOSCALE ADVANCES 2022; 4:2313-2320. [PMID: 36133695 PMCID: PMC9417737 DOI: 10.1039/d2na00103a] [Citation(s) in RCA: 12] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/14/2022] [Accepted: 04/01/2022] [Indexed: 06/05/2023]
Abstract
Cancer, one of the deadliest diseases for both sexes, has always demanded updated treatment strategies with time. Breast cancer is responsible for the highest mortality rate among females worldwide and requires treatment with advanced regimens due to the higher probability of breast cancer cells to develop drug cytotoxicity followed by resistance. Covalent organic framework (COF) materials with ordered nanoscale porosity can serve as drug delivery vehicles due to their biocompatible nature and large internal void spaces. In this research work, we have employed a novel biocompatible COF, TRIPTA, as a drug delivery carrier towards breast cancer cells. It served as a drug delivery vehicle for cisplatin in triple negative breast cancer (TNBC) cells. We have checked the potency of TRIPTA in combating the proliferation of metastatic TNBC cells. Our results revealed that cisplatin loaded over TRIPTA-COF exhibited a greater impact on the CD44+/CD24- cancer stem cell niche of breast cancer. Retarded migration of cancer cells has also been observed with the dual treatment of TRIPTA and cisplatin compared to that of cisplatin alone. Epithelial-mesenchymal transition (EMT) has also been minimized by the combinatorial treatment of cisplatin carried by the carrier material in comparison to cisplatin alone. The epithelial marker E-cadherin is significantly increased in cells treated with cisplatin together with the carrier COF, and the expression of mesenchymal markers such as N-cadherin is lower. The transcriptional factor Snail has been observed under the same treatment. The carrier material is also internalized by the cancer cells in a time-dependent manner, suggesting that the organic carrier can serve as a specific drug delivery vehicle. Our experimental results suggested that TRIPTA-COF can serve as a potent nanocarrier for cisplatin, showing higher detrimental effects on the proliferation and migration of TNBC cells by increasing the cytotoxicity of cisplatin.
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Affiliation(s)
- Sabuj Kanti Das
- School of Materials Sciences, Indian Association for the Cultivation of Science 2A & 2B Raja S. C. Mullick Road, Jadavpur Kolkata 700032 India
| | - Sraddhya Roy
- Receptor Biology and Tumor Metastasis, Chittaranjan National Cancer Institute 37, S P Mukherjee Road Kolkata-700 026 India
| | - Ananya Das
- Receptor Biology and Tumor Metastasis, Chittaranjan National Cancer Institute 37, S P Mukherjee Road Kolkata-700 026 India
| | - Avik Chowdhury
- School of Materials Sciences, Indian Association for the Cultivation of Science 2A & 2B Raja S. C. Mullick Road, Jadavpur Kolkata 700032 India
| | - Nabanita Chatterjee
- Receptor Biology and Tumor Metastasis, Chittaranjan National Cancer Institute 37, S P Mukherjee Road Kolkata-700 026 India
| | - Asim Bhaumik
- School of Materials Sciences, Indian Association for the Cultivation of Science 2A & 2B Raja S. C. Mullick Road, Jadavpur Kolkata 700032 India
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Sangenito LS, Rodrigues HD, Santiago SO, Bombaça ACS, Menna-Barreto RFS, Reddy A, Branquinha MH, Velasco-Torrijos T, Santos ALS. In vitro effects of bis(N-[4-(hydroxyphenyl)methyl]-2-pyridinemethamine)zinc perchlorate monohydrate 4 on the physiology and interaction process of Leishmania amazonensis. Parasitol Int 2021; 84:102376. [PMID: 33951539 DOI: 10.1016/j.parint.2021.102376] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2021] [Revised: 04/27/2021] [Accepted: 04/29/2021] [Indexed: 10/21/2022]
Abstract
Leishmaniasis is one of the most relevant neglected tropical diseases in the world, affecting 14 million people. Despite the high morbidity, mortality and socio-economic impact, few therapeutic options are available for this disease. To make matters worse, the available molecules have several limitations such as limited efficacy, high cost, side effects and increased resistance. In this context, our group previously synthesized new compounds with anti-leishmania potential being the bis(N-[4-(hydroxyphenyl)methyl]-2-pyridinemethamine)zinc perchlorate monohydrate 4 (complex 4) the most promising one. Therefore, this present work revealed some morphological and physiological changes promoted by complex 4 on Leishmania amazonensis promastigotes as well as it was evidenced its potential against intramacrophage amastigotes. Complex 4 promoted a progressive reduction on the promastigotes size and a remarkable increase on the granularity/complexity as judged by flow cytometry. Transmission electron microscopy (TEM) analysis revealed extensive mitochondrial and plasma membrane alterations, although plasma membrane integrity remained. The mitochondrial changes observed by TEM were accompanied by a decrease in the activity of mitochondrial dehydrogenases with increased production of reactive oxygen species. Interestingly, promastigotes also showed changes in lipid metabolism. Besides the very low toxicity to macrophages, complex 4 had a great effect on intramacrophage amastigotes, displaying an IC50 of 3.91 μM. Collectively, the data presented here reinforce the potential of aminopyridyl compounds complexed to zinc against L. amazonensis. Thus, our work serves as a basis for in vivo assays to be designed or even the synthesis of more selective/effective compounds with lower cost.
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Affiliation(s)
- Leandro S Sangenito
- Laboratório de Estudos Avançados de Microrganismos Emergentes e Resistentes, Departamento de Microbiologia Geral, Instituto de Microbiologia Paulo de Góes, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil.
| | - Hallana D Rodrigues
- Laboratório de Estudos Avançados de Microrganismos Emergentes e Resistentes, Departamento de Microbiologia Geral, Instituto de Microbiologia Paulo de Góes, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil
| | - Simone O Santiago
- Laboratório de Estudos Avançados de Microrganismos Emergentes e Resistentes, Departamento de Microbiologia Geral, Instituto de Microbiologia Paulo de Góes, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil
| | - Ana Cristina S Bombaça
- Laboratório de Biologia Celular, Instituto Oswaldo Cruz, Fundação Oswaldo Cruz, Rio de Janeiro, Brazil
| | - Rubem F S Menna-Barreto
- Laboratório de Biologia Celular, Instituto Oswaldo Cruz, Fundação Oswaldo Cruz, Rio de Janeiro, Brazil
| | - Andrew Reddy
- Department of Chemistry, Maynooth University, Maynooth, Co. Kildare, Ireland
| | - Marta H Branquinha
- Laboratório de Estudos Avançados de Microrganismos Emergentes e Resistentes, Departamento de Microbiologia Geral, Instituto de Microbiologia Paulo de Góes, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil
| | - Trinidad Velasco-Torrijos
- Department of Chemistry, Maynooth University, Maynooth, Co. Kildare, Ireland; The Kathleen Lonsdale Institute for Human Health Research, Maynooth University, Maynooth, Co. Kildare, Ireland
| | - André L S Santos
- Laboratório de Estudos Avançados de Microrganismos Emergentes e Resistentes, Departamento de Microbiologia Geral, Instituto de Microbiologia Paulo de Góes, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil; Programa de Pós-Graduação em Bioquímica, Instituto de Química, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil
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Generation and characterization of U937-TR: a platform cell line for inducible gene expression in human macrophages. Parasitology 2020; 147:1524-1531. [PMID: 32713391 DOI: 10.1017/s0031182020001110] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
Monocytes and macrophages are involved in a wide range of biological processes and parasitic diseases. The characterization of the molecular mechanisms governing such processes usually requires precise control of the expression of genes of interest. We implemented a tetracycline-controlled gene expression system in the U937 cell line, one of the most used in vitro models for the research of human monocytes and macrophages. Here we characterized U937-derived cell lines in terms of phenotypic (morphology and marker expression) and functional (capacity for phagocytosis and for Leishmania parasite hosting) changes induced by phorbol-12-myristate-13-acetate (PMA). Finally, we provide evidence of tetracycline-inducible and reversible Lamin-A gene silencing of the PMA-differentiated U937-derived cells.
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Wang L, Wang N, Zhang R, Dong D, Liu R, Zhang L, Ji W, Yu M, Zhang F, Niu R, Zhou Y. TGFβ regulates NK1R-Tr to affect the proliferation and apoptosis of breast cancer cells. Life Sci 2020; 256:117674. [PMID: 32380077 DOI: 10.1016/j.lfs.2020.117674] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2020] [Revised: 04/09/2020] [Accepted: 04/12/2020] [Indexed: 12/22/2022]
Abstract
OBJECTIVES TGFβ promotes cancer aggressiveness in advanced stages. NK1R-Tr expression in advanced breast cancer has a pro-carcinogenic effect. In this study, we aimed to investigate the effect of the association of TGFβ with NK1R-Tr expression on the proliferation and apoptosis of breast cancer cells. METHODS Immunohistochemical staining and Western blot analysis were used to detect TGFβ and NK1R-Tr in breast cancer and paracancerous tissue samples. MDA-MB-231 and BT549 cells were stimulated with TGFβ after NK1R knockdown or treated with the NK1R antagonist aprepitant, and the effects of TGFβ and NK1R-Tr on proliferation and apoptosis were detected by CCK-8, colony formation and flow cytometry assays. In vivo xenograft models were used to further verify the effects of NK1R-Tr and TGFβ. The regulatory effects of Smad4 on NK1R promoter activity were confirmed by ChIP and dual-luciferase reporter assays. RESULTS The expression levels of TGFβ and NK1R-Tr were higher in breast cancer tissues than in adjacent tissues and were positively correlated in human breast cancer tissues. NK1R knockdown or aprepitant treatment in MDA-MB-231 and BT549 cells attenuated the effects of TGFβ on cell proliferation. The proportion of cells in G2/M phase significantly increased, the expression of cyclin B1 decreased, and the expression of P21 increased; these effects were weakened by TGFβ treatment. Apoptosis in breast cancer cells was significantly increased. In vivo xenograft models were used to further verify that NK1R-Tr and TGFβ promoted tumour growth. After TGFβ treatment, the binding capacity of Smad4 to the NK1R promoter, as well as luciferase activity, was enhanced. CONCLUSIONS The expression levels of TGFβ and NK1R-Tr were higher in breast cancer tissues than in normal tissues, and both were correlated with a poor patient prognosis. TGFβ and NK1R-Tr promoted cell proliferation and inhibited apoptosis, and TGFβ regulated the expression of NK1R-Tr via Smad4.
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Affiliation(s)
- Lushan Wang
- Department of Clinical Laboratory, Tianjin Medical University Cancer Institute and Hospital, National Clinical Research Center for Cancer, Tianjin's Clinical Research Center for Cancer, Tianjin Key Laboratory of Cancer Prevention and Therapy, Key Laboratory of Breast Cancer Prevention and Therapy of Educational Ministry, Tianjin Medical University, Tianjin, China; Department of Clinical Laboratory, Tianjin Children's Hospital, Tianjin, China
| | - Ning Wang
- Department of Clinical Laboratory, Tianjin Medical University Cancer Institute and Hospital, National Clinical Research Center for Cancer, Tianjin's Clinical Research Center for Cancer, Tianjin Key Laboratory of Cancer Prevention and Therapy, Key Laboratory of Breast Cancer Prevention and Therapy of Educational Ministry, Tianjin Medical University, Tianjin, China
| | - Runshi Zhang
- Department of Clinical Laboratory, Tianjin Medical University Cancer Institute and Hospital, National Clinical Research Center for Cancer, Tianjin's Clinical Research Center for Cancer, Tianjin Key Laboratory of Cancer Prevention and Therapy, Key Laboratory of Breast Cancer Prevention and Therapy of Educational Ministry, Tianjin Medical University, Tianjin, China
| | - Dong Dong
- Department of Clinical Laboratory, Tianjin Medical University Cancer Institute and Hospital, National Clinical Research Center for Cancer, Tianjin's Clinical Research Center for Cancer, Tianjin Key Laboratory of Cancer Prevention and Therapy, Key Laboratory of Breast Cancer Prevention and Therapy of Educational Ministry, Tianjin Medical University, Tianjin, China
| | - Rui Liu
- Tianjin Medical University Cancer Institute and Hospital, National Clinical Research Center for Cancer, Key Laboratory of Cancer Prevention and Therapy, Tianjin's Clinical Research Center for Cancer, Tianjin, China
| | - Lufang Zhang
- Department of Laboratory, Aviation General Hospital, Beijing, China
| | - Wei Ji
- Public Laboratory, Tianjin Medical University Cancer Institute and Hospital, National Clinical Research Center for Cancer, Tianjin's Clinical Research Center for Cancer, Tianjin Key Laboratory of Cancer Prevention and Therapy, Key Laboratory of Breast Cancer Prevention and Therapy of Educational Ministry, Tianjin Medical University, Tianjin, China
| | - Man Yu
- Department of Laboratory Medicine and Pathobiology, University of Toronto, Canada
| | - Fei Zhang
- Public Laboratory, Tianjin Medical University Cancer Institute and Hospital, National Clinical Research Center for Cancer, Tianjin's Clinical Research Center for Cancer, Tianjin Key Laboratory of Cancer Prevention and Therapy, Key Laboratory of Breast Cancer Prevention and Therapy of Educational Ministry, Tianjin Medical University, Tianjin, China
| | - Ruifang Niu
- Public Laboratory, Tianjin Medical University Cancer Institute and Hospital, National Clinical Research Center for Cancer, Tianjin's Clinical Research Center for Cancer, Tianjin Key Laboratory of Cancer Prevention and Therapy, Key Laboratory of Breast Cancer Prevention and Therapy of Educational Ministry, Tianjin Medical University, Tianjin, China
| | - Yunli Zhou
- Department of Clinical Laboratory, Tianjin Medical University Cancer Institute and Hospital, National Clinical Research Center for Cancer, Tianjin's Clinical Research Center for Cancer, Tianjin Key Laboratory of Cancer Prevention and Therapy, Key Laboratory of Breast Cancer Prevention and Therapy of Educational Ministry, Tianjin Medical University, Tianjin, China.
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Zabihula B, Yiliyasi M, Lu Y, Salai A. MicroRNA-490-3p inhibits proliferation and stimulates apoptosis of ESCC cells via MAPK1 downregulation. Oncol Lett 2019; 18:3170-3176. [PMID: 31452793 PMCID: PMC6676399 DOI: 10.3892/ol.2019.10636] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2018] [Accepted: 06/06/2019] [Indexed: 12/18/2022] Open
Abstract
The present study aimed to investigate whether microRNA (miR)-490-3p can regulate MAPK1 expression, increase proliferation of esophageal squamous cell carcinoma (ESCC) and reduce ESCC cell apoptosis. The Cancer Genome Atlas (TCGA) database was used to explore the functional role of miR-490-3p in ESCC. The expression of miR-490-3p in ESCC tissues and adjacent tissues of patients with ESCC were detected by reverse transcription-quantitative PCR. The effect of miR-490-3p on ESCC cell proliferation and apoptosis were detected by cell counting kit-8 and clone formation assay, and flow cytometry, respectively. The dual luciferase reporter assay was used for detect the regulatory association between miR-490-3p and MAPK1. The TCGA dataset demonstrated that miR-490-3p expression was reduced in ESCC tissues compared with normal tissue. The expression of miR-490-3p was also lower in ESCC tissues compared with adjacent tissues. The expression of miR-490-3p in patients with stage III and IV ESCC were significantly lower than those in stage I and II. In patients with tumor >3 cm, miR-490-3p expression was lower than in patients with tumor <3 cm. Gene set enrichment analysis demonstrated that miR-490-3p may essentially regulate cell apoptosis. In addition, miR-490-3p depletion in TE1 and ECA109 cell lines promoted cell proliferation and inhibited cell apoptosis. The results from dual luciferase reporter assay demonstrated that miR-490-3p may be able to degrade MAPK1. Furthermore, MAPK1 overexpression in TE1 and ECA109 cells partially reversed the effects of miR-490-3p on cell proliferation and apoptosis. Low expression of miR-490-3p may therefore promote the proliferation and inhibit the apoptosis of ESCC cells by regulating MAPK1.
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Affiliation(s)
- Baerxiaguli Zabihula
- Department of Thoracic and Abdominal Radiotherapy, The Third Clinical Medical College (Affiliated Tumor Hospital) of Xinjiang Medical University, Urumqi, Xinjiang 830011, P.R. China
| | - Mukedaisi Yiliyasi
- Department of Thoracic and Abdominal Radiotherapy, The Third Clinical Medical College (Affiliated Tumor Hospital) of Xinjiang Medical University, Urumqi, Xinjiang 830011, P.R. China
| | - Yanrong Lu
- Department of Thoracic and Abdominal Radiotherapy, The Third Clinical Medical College (Affiliated Tumor Hospital) of Xinjiang Medical University, Urumqi, Xinjiang 830011, P.R. China
| | - Adili Salai
- Department of Thoracic Surgery, The Third Clinical Medical College (Affiliated Tumor Hospital) of Xinjiang Medical University, Urumqi, Xinjiang 830011, P.R. China
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Bae Y, Jung MK, Lee S, Song SJ, Mun JY, Green ES, Han J, Ko KS, Choi JS. Dequalinium-based functional nanosomes show increased mitochondria targeting and anticancer effect. Eur J Pharm Biopharm 2018; 124:104-115. [PMID: 29305141 DOI: 10.1016/j.ejpb.2017.12.013] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/26/2017] [Revised: 10/31/2017] [Accepted: 12/21/2017] [Indexed: 01/13/2023]
Abstract
Mitochondria are targets with great potential for therapeutics for many human disorders. However, drug delivery systems for such therapeutics remain in need of more efficient mitochondrial-targeting carriers. In this study, we report that nanosomes composed of Dequalinium/DOTAP (1,2-dioleoyl-3-trimethylammonium-propane)/DOPE (1,2-dioleoyl-sn-glycero-3-phosphoethanolamine), called DQA80s, can act in the dual role of mitochondrial-targeting carrier and anticancer agent for therapeutic interventions against mitochondrial diseases. In cytotoxicity assays, DQA80s were shown to be more toxic than DQAsomes. The DQA80s showed significantly increased cellular uptake as compared to that of DQAsomes, and DQA80s also showed more efficient escape from the endolysosome to the cytosol. We observed the efficient targeting of DQA80s to mitochondria in living cells using flow cytometry, confocal microscopy, and TEM imaging. We also found evidence of anticancer potential that mitochondrial-targeted DQA80s induced apoptosis by production of reactive oxygen species (ROS) via MAPK signaling pathways, loss of mitochondrial membrane potential, and the caspase-3 activation. The present study demonstrates that DQA80s have excellent dual potential both as a carrier and as an anticancer therapeutic for mitochondria-related disease therapy in vivo.
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Affiliation(s)
- Yoonhee Bae
- Department of Physiology, College of Medicine, Cardiovascular and Metabolic Disease Center, Inje University, Busan 614-735, South Korea
| | - Min Kyo Jung
- Department of Convergence Medicine, University of Ulsan College of Medicine and Asan Institute for Life Sciences, Asan Medical Center, Seoul, South Korea
| | - Seulgi Lee
- Department of Biochemistry, College of Natural Science, Chungnam National University, Daejeon 305-764, South Korea
| | - Su Jeong Song
- Department of Biochemistry, College of Natural Science, Chungnam National University, Daejeon 305-764, South Korea
| | - Ji Young Mun
- Department of Biomedical Laboratory Science, College of Health Science, Eulji University, Seongnam, Gyeonggi-Do, South Korea
| | - Eric S Green
- Salt Lake Community College, Salt Lake City, UT, USA
| | - Jin Han
- Department of Physiology, College of Medicine, Cardiovascular and Metabolic Disease Center, Inje University, Busan 614-735, South Korea
| | - Kyung Soo Ko
- Department of Internal Medicine, Sanggye Paik Hospital, Cardiovascular and Metabolic Disease Center, Inje University, Seoul 139-707, South Korea.
| | - Joon Sig Choi
- Department of Biochemistry, College of Natural Science, Chungnam National University, Daejeon 305-764, South Korea.
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MiR-449a regulates autophagy to inhibit silica-induced pulmonary fibrosis through targeting Bcl2. J Mol Med (Berl) 2016; 94:1267-1279. [PMID: 27351886 DOI: 10.1007/s00109-016-1441-0] [Citation(s) in RCA: 64] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2016] [Revised: 06/07/2016] [Accepted: 06/20/2016] [Indexed: 10/21/2022]
Abstract
Silicosis is a fatal pulmonary fibrotic disorder characterized by accumulation of fibroblasts and myofibroblasts and deposition of extracellular matrix proteins. MiR-449a is a potential mediator of many cellular processes, including cell proliferation, differentiation, and apoptosis. We hypothesized that miR-449a may play a crucial role in the progression of pulmonary fibrogenesis. Here, we described miR-449a as a new autophagy-regulated miRNA. Importantly, miR-449a expression was significantly decreased in lung tissues of mice with silica treatment, and it was similarly expressed in NIH-3T3 and MRC-5 cells stimulated with TGF-β1. The activity of autophagy was inhibited in fibrotic lung tissues and TGF-β1-treated fibroblasts. To investigate the potential effect of miR-449a, we overexpressed miR-449a in mouse models and found that miR-449a significantly reduced both the distribution and severity of lung lesions induced by silica. In addition, miR-449a was observed to induce the activity of autophagy in vivo and in vitro. Notably, Bcl2 was identified as a target of miR-449a. Bcl2 levels were decreased in NIH-3T3 cells upon miR-449a overexpression. Indeed, the Bcl2 3' UTR contained functional miR-449a responsive sequences. Furthermore, TGF-β1 was observed to increase the expression of Bcl2 via the MAPK/ERK pathway. These results suggest that miR-449a is an important regulator of autophagy, as well as a novel endogenous suppressor of pulmonary fibrosis. KEY MESSAGE MiR-449a expression was decreased in fibrotic lungs and activated fibroblasts. Autophagy was inhibited in fibrotic lung tissues and TGF-β1-treated fibroblasts. MiR-449a had an antifibrotic effect in silica-induced lung fibrosis. MiR-449a upregulated autophagic activity in vitro. Bcl2 is the autophagy-related target of miR-449a.
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Kumari V, Chatterjee N, Das S, Bhunia S, Saha KD, Bhaumik A. Self-assembled ZnS nanospheres with nanoscale porosity as an efficient carrier for the delivery of doxorubicin. RSC Adv 2015. [DOI: 10.1039/c5ra17998j] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Self-aggregated mesoporous ZnS nanomaterials have been utilized as a drug-delivery vehicle that can activates the apoptotic pathway with a minimal concentration of doxorubicin and it can regulates lymphocytic leukemia cell growth.
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Affiliation(s)
- Vandana Kumari
- Department of Material Science
- Institution Association for the Cultivation of Science
- Kolkata-700032
- India
| | - Nabanita Chatterjee
- Cancer Biology and Inflammatory Disorder Division
- CSIR-Indian Institute of Chemical Biology
- Kolkata-700032
- India
| | - Subhadip Das
- Cancer Biology and Inflammatory Disorder Division
- CSIR-Indian Institute of Chemical Biology
- Kolkata-700032
- India
| | - Subhajit Bhunia
- Department of Material Science
- Institution Association for the Cultivation of Science
- Kolkata-700032
- India
| | - Krishna Das Saha
- Cancer Biology and Inflammatory Disorder Division
- CSIR-Indian Institute of Chemical Biology
- Kolkata-700032
- India
| | - Asim Bhaumik
- Department of Material Science
- Institution Association for the Cultivation of Science
- Kolkata-700032
- India
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