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Li H, Liu Y, Tang S, Hu J, Wu Q, Wei Y, Niu M. Carbonic Anhydrase III Attenuates Hypoxia-Induced Apoptosis and Activates PI3K/Akt/mTOR Pathway in H9c2 Cardiomyocyte Cell Line. Cardiovasc Toxicol 2021; 21:914-926. [PMID: 34387844 DOI: 10.1007/s12012-021-09683-w] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/25/2021] [Accepted: 07/27/2021] [Indexed: 12/12/2022]
Abstract
Myocardial ischemia can cause insufficient oxygen and functional damage to myocardial cells. Carbonic anhydrase III (CAIII) has been found to be closely related to the abnormality of cardiomyocytes. To investigate the role of CAIII in the apoptosis of myocytes under hypoxic conditions and facilitate the strategy for treating hypoxia-induced damage, in vitro experiments in H9c2 were employed. The protein expression of CAIII in H9c2 cells after hypoxia or normoxia treatment was determined by western blotting and immunohistochemistry. MTT assay was employed for cells viability measurement and LDH release was monitored. The apoptotic cells were observed using immunofluorescence assay, flow cytometric analysis, and TUNEL assay. CAIII-overexpression or -knockdown cells were constructed to determine the role of CAIII in regulating apoptosis-related proteins caspase-3, Bax, Bcl-2, and anti-apoptosis pathway PI3K/Akt/mTOR. The mRNA levels of CAIII and genes related to CAIII synthesis including REN, IGHM, APOBEC 3F, and SKOR2 were significantly upregulated in hypoxia fetal sheep. The expression of CAIII protein and content of apoptotic H9c2 cells were increased at 1, 3, 6, and 12 h after hypoxia treatment. Overexpression of CAIII significantly upregulated Bcl2 level and downregulated Bax and caspase-3 cleavage levels, while its knockdown led to the contrary results. Overexpressed CAIII promoted the HIF-1α level and activated the PI3K/Akt/mTOR pathway, thereby exerting an inhibitory effect on hypoxia-induced apoptosis. In conclusion, our findings revealed that CAIII could protect cell from hypoxia-apoptosis of H9c2 cells, in which, activated PI3K/Akt/mTOR signaling pathway may be involved.
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Affiliation(s)
- Hua Li
- Cardiac Ultrasonic Department, Traditional Chinese Medicine Hospital Affiliated to Xinjiang Medical University, No. 116 Huanghe Road, Shayibake District, Ürümqi, 830002, Xinjiang, China.
| | - Yibin Liu
- Ultrasonic Department, First Affiliated Hospital of Xinjiang Medical University, Ürümqi, 830011, Xinjiang, China
| | - Sha Tang
- Cardiac Ultrasonic Department, Traditional Chinese Medicine Hospital Affiliated to Xinjiang Medical University, No. 116 Huanghe Road, Shayibake District, Ürümqi, 830002, Xinjiang, China
| | - Jie Hu
- Cardiac Ultrasonic Department, Traditional Chinese Medicine Hospital Affiliated to Xinjiang Medical University, No. 116 Huanghe Road, Shayibake District, Ürümqi, 830002, Xinjiang, China
| | - Qiuling Wu
- Cardiac Ultrasonic Department, Traditional Chinese Medicine Hospital Affiliated to Xinjiang Medical University, No. 116 Huanghe Road, Shayibake District, Ürümqi, 830002, Xinjiang, China
| | - Yang Wei
- Cardiac Ultrasonic Department, Traditional Chinese Medicine Hospital Affiliated to Xinjiang Medical University, No. 116 Huanghe Road, Shayibake District, Ürümqi, 830002, Xinjiang, China
| | - Ming Niu
- Cardiac Ultrasonic Department, Traditional Chinese Medicine Hospital Affiliated to Xinjiang Medical University, No. 116 Huanghe Road, Shayibake District, Ürümqi, 830002, Xinjiang, China
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Liu Z, Ren L, Cui X, Guo L, Jiang B, Zhou J, Liang P, Zeng J, He Z, Zhang P. Muscular proteomic profiling of deep pressure ulcers reveals myoprotective role of JAK2 in ischemia and reperfusion injury. Am J Transl Res 2018; 10:3413-3429. [PMID: 30662596 PMCID: PMC6291713] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2018] [Accepted: 10/18/2018] [Indexed: 06/09/2023]
Abstract
Pressure ulcers (PUs) are a complex and serious clinical problem. Deep tissue injury (DTI) is either the outcome or the trigger of deep PUs. However, the cellular and molecular mechanisms that contribute to the pathogenesis of deep PUs remain unclear. In this study, the degeneration characteristics and increased autophagy and apoptosis were observed in deep PU muscle tissues. Muscular proteome of deep PU revealed that a total of 520 proteins were differentially expressed, particularly, JAK2 was down-regulated. Intriguingly, expression of JAK2 in C2C12 myoblasts exposed to oxygen-glucose deprivation and reoxygenation (OGD/R) insult was also distinctly reduced. Ex vivo, we transfected C2C12 myoblasts with lentivirus carrying the JAK2 plasmid and found that JAK2-overexpressed myoblasts exhibited a decrease in autophagy and apoptosis after OGD/R treatment, as well as less cell death. Finally, Western blot analysis determined that p-JAK2, p-AKT, p-mTOR and p-ERK1/2 levels were significantly elevated, accompanied by JAK2 overexpression but without p-STAT3, and inhibition of the AKT and ERK1/2 pathway resulted in elevated apoptosis and/or autophagy. These results demonstrated that JAK2 may play an important protective role in muscular ischemia and reperfusion injury during DTI development by inhibition of autophagy and apoptosis through the AKT and ERK1/2 pathways.
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Affiliation(s)
- Zan Liu
- Department of Burns and Reconstructive Surgery, Xiangya Hospital, Central South UniversityChangsha, Hunan, P. R. China
| | - Licheng Ren
- Department of Burns and Reconstructive Surgery, Xiangya Hospital, Central South UniversityChangsha, Hunan, P. R. China
| | - Xu Cui
- Department of Burns and Reconstructive Surgery, Xiangya Hospital, Central South UniversityChangsha, Hunan, P. R. China
| | - Le Guo
- Department of Burns and Reconstructive Surgery, Xiangya Hospital, Central South UniversityChangsha, Hunan, P. R. China
| | - Bimei Jiang
- Department of Pathophysiology, Xiangya School of Medicine, Central South UniversityChangsha, Hunan, P. R. China
| | - Jie Zhou
- Department of Burns and Reconstructive Surgery, Xiangya Hospital, Central South UniversityChangsha, Hunan, P. R. China
| | - Pengfei Liang
- Department of Burns and Reconstructive Surgery, Xiangya Hospital, Central South UniversityChangsha, Hunan, P. R. China
| | - Jizhang Zeng
- Department of Burns and Reconstructive Surgery, Xiangya Hospital, Central South UniversityChangsha, Hunan, P. R. China
| | - Zhiyou He
- Department of Burns and Reconstructive Surgery, Xiangya Hospital, Central South UniversityChangsha, Hunan, P. R. China
| | - Pihong Zhang
- Department of Burns and Reconstructive Surgery, Xiangya Hospital, Central South UniversityChangsha, Hunan, P. R. China
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Shi C, Uda Y, Dedic C, Azab E, Sun N, Hussein AI, Petty CA, Fulzele K, Mitterberger-Vogt MC, Zwerschke W, Pereira R, Wang K, Pajevic PD. Carbonic anhydrase III protects osteocytes from oxidative stress. FASEB J 2017; 32:440-452. [PMID: 28928248 DOI: 10.1096/fj.201700485rr] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2017] [Accepted: 09/05/2017] [Indexed: 12/26/2022]
Abstract
Osteocytes are master orchestrators of bone remodeling; they control osteoblast and osteoclast activities both directly via cell-to-cell communication and indirectly via secreted factors, and they are the main postnatal source of sclerostin and RANKL (receptor activator of NF-kB ligand), two regulators of osteoblast and osteoclast function. Despite progress in understanding osteocyte biology and function, much remains to be elucidated. Recently developed osteocytic cell lines-together with new genome editing tools-has allowed a closer look at the biology and molecular makeup of these cells. By using single-cell cloning, we identified genes that are associated with high Sost/sclerostin expression and analyzed their regulation and function. Unbiased transcriptome analysis of high- vs. low-Sost/sclerostin-expressing cells identified known and novel genes. Dmp1 (dentin matrix protein 1), Dkk1 (Dickkopf WNT signaling pathway inhibitor 1), and Phex were among the most up-regulated known genes, whereas Srpx2, Cd200, and carbonic anhydrase III (CAIII) were identified as novel markers of differentiated osteocytes. Aspn, Enpp2, Robo2, Nov, and Serpina3g were among the transcripts that were most significantly suppressed in high-Sost cells. Considering that CAII was recently identified as being regulated by Sost/sclerostin and capable of controlling mineral homeostasis, we focused our attention on CAIII. Here, we report that CAIII is highly expressed in osteocytes, is regulated by parathyroid hormone both in vitro and in vivo, and protects osteocytes from oxidative stress.-Shi, C., Uda, Y., Dedic, C., Azab, E., Sun, N., Hussein, A. I., Petty, C. A., Fulzele, K., Mitterberger-Vogt, M. C., Zwerschke, W., Pereira, R., Wang, K., Divieti Pajevic, P. Carbonic anhydrase III protects osteocytes from oxidative stress.
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Affiliation(s)
- Chao Shi
- Department of Orthopaedics, The Second Affiliated Hospital of Xi'an Jiaotong University, Xi'an, China.,Molecular and Cell Biology, Henry M. Goldman School of Dental Medicine, Boston University, Boston, Massachusetts, USA
| | - Yuhei Uda
- Molecular and Cell Biology, Henry M. Goldman School of Dental Medicine, Boston University, Boston, Massachusetts, USA
| | - Christopher Dedic
- Molecular and Cell Biology, Henry M. Goldman School of Dental Medicine, Boston University, Boston, Massachusetts, USA
| | - Ehab Azab
- Molecular and Cell Biology, Henry M. Goldman School of Dental Medicine, Boston University, Boston, Massachusetts, USA
| | - Ningyuan Sun
- Molecular and Cell Biology, Henry M. Goldman School of Dental Medicine, Boston University, Boston, Massachusetts, USA
| | - Amira I Hussein
- Department of Orthopedics, School of Medicine, Boston University, Boston, Massachusetts, USA
| | - Christopher A Petty
- Molecular and Cell Biology, Henry M. Goldman School of Dental Medicine, Boston University, Boston, Massachusetts, USA
| | - Keertik Fulzele
- Molecular and Cell Biology, Henry M. Goldman School of Dental Medicine, Boston University, Boston, Massachusetts, USA
| | | | - Werner Zwerschke
- Cell Metabolism and Differentiation Research Group, University of Innsbruck, Innsbruck, Austria
| | - Renata Pereira
- David Geffen School of Medicine, University of California, Los Angeles, Los Angeles, California, USA
| | - Kunzheng Wang
- Department of Orthopaedics, The Second Affiliated Hospital of Xi'an Jiaotong University, Xi'an, China;
| | - Paola Divieti Pajevic
- Molecular and Cell Biology, Henry M. Goldman School of Dental Medicine, Boston University, Boston, Massachusetts, USA;
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