1
|
Mir SA, Pinto SM, Paul S, Raja R, Nanjappa V, Syed N, Advani J, Renuse S, Sahasrabuddhe NA, Prasad TSK, Giri AK, Gowda H, Chatterjee A. SILAC-based quantitative proteomic analysis reveals widespread molecular alterations in human skin keratinocytes upon chronic arsenic exposure. Proteomics 2016; 17. [DOI: 10.1002/pmic.201600257] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2016] [Revised: 09/10/2016] [Accepted: 10/17/2016] [Indexed: 12/21/2022]
Affiliation(s)
- Sartaj Ahmad Mir
- Institute of Bioinformatics; International Technology Park; Bangalore India
- Manipal University; Manipal Karnataka India
| | - Sneha M. Pinto
- Institute of Bioinformatics; International Technology Park; Bangalore India
- YU-IOB Center for Systems Biology and Molecular Medicine; Yenepoya University; Mangalore India
| | - Somnath Paul
- Molecular Genetics Division; CSIR-Indian Institute of Chemical Biology; Kolkata India
| | - Remya Raja
- Institute of Bioinformatics; International Technology Park; Bangalore India
| | - Vishalakshi Nanjappa
- Institute of Bioinformatics; International Technology Park; Bangalore India
- Amrita School of Biotechnology; Amrita University; Kollam India
| | - Nazia Syed
- Institute of Bioinformatics; International Technology Park; Bangalore India
- Department of Biochemistry and Molecular Biology; Pondicherry University; Puducherry India
| | - Jayshree Advani
- Institute of Bioinformatics; International Technology Park; Bangalore India
- Manipal University; Manipal Karnataka India
| | - Santosh Renuse
- Institute of Bioinformatics; International Technology Park; Bangalore India
| | | | - T. S. Keshava Prasad
- Institute of Bioinformatics; International Technology Park; Bangalore India
- YU-IOB Center for Systems Biology and Molecular Medicine; Yenepoya University; Mangalore India
- NIMHANS-IOB Proteomics and Bioinformatics Laboratory; Neurobiology Research Centre; National Institute of Mental Health and Neurosciences; Bangalore India
| | - Ashok K. Giri
- Molecular Genetics Division; CSIR-Indian Institute of Chemical Biology; Kolkata India
| | - Harsha Gowda
- Institute of Bioinformatics; International Technology Park; Bangalore India
- YU-IOB Center for Systems Biology and Molecular Medicine; Yenepoya University; Mangalore India
| | - Aditi Chatterjee
- Institute of Bioinformatics; International Technology Park; Bangalore India
- YU-IOB Center for Systems Biology and Molecular Medicine; Yenepoya University; Mangalore India
| |
Collapse
|
2
|
Subbannayya Y, Syed N, Barbhuiya MA, Raja R, Marimuthu A, Sahasrabuddhe N, Pinto SM, Manda SS, Renuse S, Manju HC, Zameer MAL, Sharma J, Brait M, Srikumar K, Roa JC, Vijaya Kumar M, Kumar KVV, Prasad TSK, Ramaswamy G, Kumar RV, Pandey A, Gowda H, Chatterjee A. Calcium calmodulin dependent kinase kinase 2 - a novel therapeutic target for gastric adenocarcinoma. Cancer Biol Ther 2015; 16:336-45. [PMID: 25756516 DOI: 10.4161/15384047.2014.972264] [Citation(s) in RCA: 54] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023] Open
Abstract
Gastric cancer is one of the most common gastrointestinal malignancies and is associated with poor prognosis. Exploring alterations in the proteomic landscape of gastric cancer is likely to provide potential biomarkers for early detection and molecules for targeted therapeutic intervention. Using iTRAQ-based quantitative proteomic analysis, we identified 22 proteins that were overexpressed and 17 proteins that were downregulated in gastric tumor tissues as compared to the adjacent normal tissue. Calcium/calmodulin-dependent protein kinase kinase 2 (CAMKK2) was found to be 7-fold overexpressed in gastric tumor tissues. Immunohistochemical labeling of tumor tissue microarrays for validation of CAMKK2 overexpression revealed that it was indeed overexpressed in 94% (92 of 98) of gastric cancer cases. Silencing of CAMKK2 using siRNA significantly reduced cell proliferation, colony formation and invasion of gastric cancer cells. Our results demonstrate that CAMKK2 signals in gastric cancer through AMPK activation and suggest that CAMKK2 could be a novel therapeutic target in gastric cancer.
Collapse
|
3
|
Szczesny B, Olah G, Walker DK, Volpi E, Rasmussen BB, Szabo C, Mitra S. Deficiency in repair of the mitochondrial genome sensitizes proliferating myoblasts to oxidative damage. PLoS One 2013; 8:e75201. [PMID: 24066171 PMCID: PMC3774773 DOI: 10.1371/journal.pone.0075201] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2013] [Accepted: 08/12/2013] [Indexed: 11/18/2022] Open
Abstract
Reactive oxygen species (ROS), generated as a by-product of mitochondrial oxidative phosphorylation, are particularly damaging to the genome of skeletal muscle because of their high oxygen consumption. Proliferating myoblasts play a key role during muscle regeneration by undergoing myogenic differentiation to fuse and restore damaged muscle. This process is severely impaired during aging and in muscular dystrophies. In this study, we investigated the role of oxidatively damaged DNA and its repair in the mitochondrial genome of proliferating skeletal muscle progenitor myoblasts cells and their terminally differentiated product, myotubes. Using the C2C12 cell line as a well-established model for skeletal muscle differentiation, we show that myoblasts are highly sensitive to ROS-mediated DNA damage, particularly in the mitochondrial genome, due to deficiency in 5’ end processing at the DNA strand breaks. Ectopic expression of the mitochondrial-specific 5’ exonuclease, EXOG, a key DNA base excision/single strand break repair (BER/SSBR) enzyme, in myoblasts but not in myotubes, improves the cell’s resistance to oxidative challenge. We linked loss of myoblast viability by activation of apoptosis with deficiency in the repair of the mitochondrial genome. Moreover, the process of myoblast differentiation increases mitochondrial biogenesis and the level of total glutathione. We speculate that our data may provide a mechanistic explanation for depletion of proliferating muscle precursor cells during the development of sarcopenia, and skeletal muscle dystrophies.
Collapse
Affiliation(s)
- Bartosz Szczesny
- Department of Biochemistry and Molecular Biology, University of Texas Medical Branch, Galveston, Texas, United States of America
- * E-mail:
| | - Gabor Olah
- Department of Anesthesiology, University of Texas Medical Branch, Galveston, Texas, United States of America
| | - Dillon K. Walker
- Department of Nutrition and Metabolism, University of Texas Medical Branch, Galveston, Texas, United States of America
| | - Elena Volpi
- Department of Internal Medicine, University of Texas Medical Branch, Galveston, Texas, United States of America
| | - Blake B. Rasmussen
- Department of Nutrition and Metabolism, University of Texas Medical Branch, Galveston, Texas, United States of America
| | - Csaba Szabo
- Department of Anesthesiology, University of Texas Medical Branch, Galveston, Texas, United States of America
| | - Sankar Mitra
- Department of Biochemistry and Molecular Biology, University of Texas Medical Branch, Galveston, Texas, United States of America
| |
Collapse
|
4
|
Cheng Y, Ren X, Gowda ASP, Shan Y, Zhang L, Yuan YS, Patel R, Wu H, Huber-Keener K, Yang JW, Liu D, Spratt TE, Yang JM. Interaction of Sirt3 with OGG1 contributes to repair of mitochondrial DNA and protects from apoptotic cell death under oxidative stress. Cell Death Dis 2013; 4:e731. [PMID: 23868064 PMCID: PMC3730425 DOI: 10.1038/cddis.2013.254] [Citation(s) in RCA: 160] [Impact Index Per Article: 14.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2013] [Revised: 05/20/2013] [Accepted: 06/04/2013] [Indexed: 12/16/2022]
Abstract
Sirtuin 3 (Sirt3), a major mitochondrial NAD(+)-dependent deacetylase, targets various mitochondrial proteins for lysine deacetylation and regulates important cellular functions such as energy metabolism, aging, and stress response. In this study, we identified the human 8-oxoguanine-DNA glycosylase 1 (OGG1), a DNA repair enzyme that excises 7,8-dihydro-8-oxoguanine (8-oxoG) from damaged genome, as a new target protein for Sirt3. We found that Sirt3 physically associated with OGG1 and deacetylated this DNA glycosylase and that deacetylation by Sirt3 prevented the degradation of the OGG1 protein and controlled its incision activity. We further showed that regulation of the acetylation and turnover of OGG1 by Sirt3 played a critical role in repairing mitochondrial DNA (mtDNA) damage, protecting mitochondrial integrity, and preventing apoptotic cell death under oxidative stress. We observed that following ionizing radiation, human tumor cells with silencing of Sirt3 expression exhibited deteriorated oxidative damage of mtDNA, as measured by the accumulation of 8-oxoG and 4977 common deletion, and showed more severe mitochondrial dysfunction and underwent greater apoptosis in comparison with the cells without silencing of Sirt3 expression. The results reported here not only reveal a new function and mechanism for Sirt3 in defending the mitochondrial genome against oxidative damage and protecting from the genotoxic stress-induced apoptotic cell death but also provide evidence supporting a new mtDNA repair pathway.
Collapse
Affiliation(s)
- Y Cheng
- Department of Pharmacology, Milton S Hershey Medical Center, Penn State Hershey Cancer Institute, Pennsylvania State University College of Medicine, Hershey, PA 17033-0850, USA.
| | | | | | | | | | | | | | | | | | | | | | | | | |
Collapse
|
5
|
Chang X, Ravi R, Pham V, Bedi A, Chatterjee A, Sidransky D. Adenylate kinase 3 sensitizes cells to cigarette smoke condensate vapor induced cisplatin resistance. PLoS One 2011; 6:e20806. [PMID: 21698293 PMCID: PMC3115955 DOI: 10.1371/journal.pone.0020806] [Citation(s) in RCA: 41] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2010] [Accepted: 05/12/2011] [Indexed: 11/24/2022] Open
Abstract
BACKGROUND The major established etiologic risk factor for bladder cancer is cigarette smoking and one of the major antineoplastic agents used for the treatment of advanced bladder cancer is cisplatin. A number of reports have suggested that cancer patients who smoke while receiving treatment have lower rates of response and decreased efficacy of cancer therapies. METHODOLOGY/PRINCIPAL FINDINGS In this study, we investigated the effect of cigarette smoke condensate (CSC) vapor on cisplatin toxicity in urothelial cell lines SV-HUC-1 and SCaBER cells. We showed that chronic exposure to CSC vapor induced cisplatin resistance in both cell lines. In addition, we found that the expression of mitochondrial-resident protein adenylate kinase-3 (AK3) is decreased by CSC vapor. We further observed that chronic CSC vapor-exposed cells displayed decreased cellular sensitivity to cisplatin, decreased mitochondrial membrane potential (ΔΨm) and increased basal cellular ROS levels compared to unexposed cells. Re-expression of AK3 in CSC vapor-exposed cells restored cellular sensitivity to cisplatin. Finally, CSC vapor increased the growth of the tumors and also curtail the response of tumor cells to cisplatin chemotherapy in vivo. CONCLUSIONS/SIGNIFICANCE The current study provides evidence that chronic CSC vapor exposure affects AK3 expression and renders the cells resistant to cisplatin.
Collapse
Affiliation(s)
- Xiaofei Chang
- Department of Otolaryngology-Head and Neck Surgery, Johns Hopkins University School of Medicine, Baltimore, Maryland, United States of America
| | - Rajani Ravi
- Department of Otolaryngology-Head and Neck Surgery, Johns Hopkins University School of Medicine, Baltimore, Maryland, United States of America
| | - Vui Pham
- Department of Otolaryngology-Head and Neck Surgery, Johns Hopkins University School of Medicine, Baltimore, Maryland, United States of America
| | - Atul Bedi
- Department of Otolaryngology-Head and Neck Surgery, Johns Hopkins University School of Medicine, Baltimore, Maryland, United States of America
| | - Aditi Chatterjee
- Department of Otolaryngology-Head and Neck Surgery, Johns Hopkins University School of Medicine, Baltimore, Maryland, United States of America
| | - David Sidransky
- Department of Otolaryngology-Head and Neck Surgery, Johns Hopkins University School of Medicine, Baltimore, Maryland, United States of America
| |
Collapse
|
6
|
Abstract
Mitochondria control essential cellular activities including generation of ATP via oxidative phosphorylation. Mitochondrial DNA (mtDNA) mutations in the regulatory D-loop region and somatic mtDNA mutations are common in primary human cancers. The biological impact of a given mutation may vary, depending on the nature of the mutation and the proportion of mutant mtDNAs carried by the cell. Identification of mtDNA mutations in precancerous lesions supports their early contribution to cell transformation and cancer progression. Introduction of mtDNA mutations in transformed cells has been associated with increased ROS production and tumor growth. Studies reveal that increased and altered mtDNA plays a role in the development of cancer but further work is required to establish the functional significance of specific mitochondrial mutations in cancer and disease progression. This review offers some insight into the extent of mtDNA mutations, their functional consequences in tumorigenesis, mitochondrial therapeutics, and future clinical application.
Collapse
Affiliation(s)
- Aditi Chatterjee
- Department of Otolaryngology-Head and Neck Surgery, Johns Hopkins University, Baltimore, MD, USA
| | | | | |
Collapse
|
7
|
Ropero S, Esteller M. Reply to “HDAC2 deficiency and histone acetylation”. Nat Genet 2008. [DOI: 10.1038/ng0708-813] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
|