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Hall D. On the nature of the optimal form of the holdase-type chaperone stress response. FEBS Lett 2019; 594:43-66. [PMID: 31432502 DOI: 10.1002/1873-3468.13580] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2019] [Revised: 08/12/2019] [Accepted: 08/14/2019] [Indexed: 11/08/2022]
Abstract
The holdase paradigm of chaperone action involves preferential binding by the chaperone to the unfolded protein state, thereby preventing it from either, associating with other unstable proteins (to form large dysfunctional aggregates), or being degraded by the proteolytic machinery of the cell/organism. In this paper, we examine the necessary physical constraints imposed upon the holdase chaperone response in a cell-like environment and use these limitations to comment on the likely nature of the optimal form of chaperone response in vivo.
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Affiliation(s)
- Damien Hall
- Laboratory of Biochemistry and Genetics, NIDDK, NIH, Bethesda, MD, USA.,Institute for Protein Research, Osaka University, Suita, Osaka, Japan
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Parida S, Mishra SR, Mishra C, Dalai N, Mohapatra S, Mahapatra APK, Kundu AK. Impact of heat stress on expression kinetics of HSP27 in cardiac cells of goats. BIOL RHYTHM RES 2019. [DOI: 10.1080/09291016.2018.1564578] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Affiliation(s)
- S. Parida
- Department of Veterinary Physiology, C.V.Sc & A.H., O.U.A.T, Bhubaneswar, India
| | - S. R. Mishra
- Department of Veterinary Physiology, C.V.Sc & A.H., O.U.A.T, Bhubaneswar, India
| | - C. Mishra
- Department of Animal Genetics & Breeding, C.V.Sc & A.H., O.U.A.T, Bhubaneswar, India
| | - N. Dalai
- Department of Veterinary Physiology, C.V.Sc & A.H., O.U.A.T, Bhubaneswar, India
| | - S. Mohapatra
- Department of Veterinary Physiology, C.V.Sc & A.H., O.U.A.T, Bhubaneswar, India
| | - A. P. K. Mahapatra
- Department of Veterinary Physiology, C.V.Sc & A.H., O.U.A.T, Bhubaneswar, India
| | - A. K. Kundu
- Department of Veterinary Physiology, C.V.Sc & A.H., O.U.A.T, Bhubaneswar, India
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Yin B, Tang S, Xu J, Sun J, Zhang X, Li Y, Bao E. CRYAB protects cardiomyocytes against heat stress by preventing caspase-mediated apoptosis and reducing F-actin aggregation. Cell Stress Chaperones 2019; 24:59-68. [PMID: 30246229 PMCID: PMC6363628 DOI: 10.1007/s12192-018-0941-y] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2018] [Revised: 09/10/2018] [Accepted: 09/11/2018] [Indexed: 11/28/2022] Open
Abstract
CRYAB is a small heat shock protein (sHSP) that has previously been shown to protect the heart against various cellular stresses; however, its precise function in myocardial cell injury caused by heat stress remains unclear. This study aimed to investigate the molecular mechanism by which CRYAB protects cardiomyocytes against heat stress. We constructed two H9C2 cell lines that stably express CRYAB protein to differing degrees: CRYAB-5 and CRYAB-7. Both CRYAB-5 and CRYAB-7 showed significantly reduced granular degeneration and vacuolar degeneration following heat stress compared to control cells. In addition, CRYAB overexpression in H9C2 cells relieved cell cycle proportion at the G0/G1 phase following heat stress compared to control cells. These protective effects were associated with the level of CRYAB protein expression. Our immunofluorescence analysis showed CRYAB could translocate from the cytoplasm to the nucleus under heat stress conditions, but that CRYAB co-localized with F-actin (which accumulates under stress conditions). Indeed, overexpression of CRYAB significantly reduced the aggregation of F-actin in H9C2 cells caused by heat stress. Furthermore, overexpressing CRYAB protein significantly reduced the apoptosis of cardiomyocytes induced by heat stress, likely by reducing the expression of cleaved-caspase 3. Collectively, our results show overexpression of CRYAB significantly increases the heat resistance of H9C2 cardiomyocytes, likely by reducing F-actin aggregation (thus stabilizing the cytoskeleton), regulating the cell cycle, and preventing caspase-mediated apoptosis.
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Affiliation(s)
- Bin Yin
- College of Veterinary Medicine, Nanjing Agricultural University, Weigang 1, Nanjing, 210095, China
| | - Shu Tang
- College of Veterinary Medicine, Nanjing Agricultural University, Weigang 1, Nanjing, 210095, China
| | - Jiao Xu
- College of Veterinary Medicine, Nanjing Agricultural University, Weigang 1, Nanjing, 210095, China
| | - Jiarui Sun
- College of Veterinary Medicine, Nanjing Agricultural University, Weigang 1, Nanjing, 210095, China
| | - Xiaohui Zhang
- College of Veterinary Medicine, Nanjing Agricultural University, Weigang 1, Nanjing, 210095, China
| | - Yubao Li
- College of Agronomy, Liaocheng University, Hunan road 1, Liaocheng, 252000, China
| | - Endong Bao
- College of Veterinary Medicine, Nanjing Agricultural University, Weigang 1, Nanjing, 210095, China.
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Yin B, Tang S, Sun J, Zhang X, Xu J, Di L, Li Z, Hu Y, Bao E. Vitamin C and sodium bicarbonate enhance the antioxidant ability of H9C2 cells and induce HSPs to relieve heat stress. Cell Stress Chaperones 2018; 23:735-748. [PMID: 29442224 PMCID: PMC6045543 DOI: 10.1007/s12192-018-0885-2] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2017] [Revised: 01/29/2018] [Accepted: 01/31/2018] [Indexed: 12/31/2022] Open
Abstract
Heat stress is exacerbated by global warming and affects human and animal health, leading to heart damage caused by imbalances in reactive oxygen species (ROS) and the antioxidant system, acid-base chemistry, electrolytes and respiratory alkalosis. Vitamin C scavenges excess ROS, and sodium bicarbonate maintains acid-base and electrolyte balance, and alleviates respiratory alkalosis. Herein, we explored the ability of vitamin C alone and in combination with equimolar sodium bicarbonate (Vitamin C-Na) to stimulate endogenous antioxidants and heat shock proteins (HSPs) to relieve heat stress in H9C2 cells. Control, vitamin C (20 μg/ml vitamin C for 16 h) and vitamin C-Na (20 μg/ml vitamin C-Na for 16 h) groups were heat-stressed for 1, 3 or 5 h. Granular and vacuolar degeneration, karyopyknosis and damage to nuclei and mitochondria were clearly reduced in treatment groups, as were apoptosis, lactate dehydrogenase activity and ROS and malondialdehyde levels, while superoxide dismutase activity was increased. Additionally, CRYAB, Hsp27, Hsp60 and Hsp70 mRNA levels were upregulated at 3 h (p < 0.01), and protein levels were increased for CRYAB at 0 h (p < 0.05) and 1 h (p < 0.01), and for Hsp70 at 3 and 5 h (p < 0.01). Thus, pre-treatment with vitamin C or vitamin C-Na might protect H9C2 cells against heat damage by enhancing the antioxidant ability and upregulating CRYAB and Hsp70.
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Affiliation(s)
- Bin Yin
- College of Veterinary Medicine, Nanjing Agricultural University, Weigang 1, Nanjing, 210095, China
| | - Shu Tang
- College of Veterinary Medicine, Nanjing Agricultural University, Weigang 1, Nanjing, 210095, China
| | - Jiarui Sun
- College of Veterinary Medicine, Nanjing Agricultural University, Weigang 1, Nanjing, 210095, China
| | - Xiaohui Zhang
- College of Veterinary Medicine, Nanjing Agricultural University, Weigang 1, Nanjing, 210095, China
| | - Jiao Xu
- College of Veterinary Medicine, Nanjing Agricultural University, Weigang 1, Nanjing, 210095, China
| | - Liangjiao Di
- Ningxia Zhihong Biotechnology Company, Kaiyuan east road 29, Yinchuan, Ningxia, 750000, China
| | - Zhihong Li
- Ningxia Animal Disease Prevention and Control Center, Yinchuan, Ningxia, 750000, China
| | - Yurong Hu
- Guyuan Animal Disease Prevention and Control Center, Guyuan, Ningxia, 756000, China
| | - Endong Bao
- College of Veterinary Medicine, Nanjing Agricultural University, Weigang 1, Nanjing, 210095, China.
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Deng H, Gao X, Peng H, Wang J, Hou X, Xu H, Yang F. Effect of liposome‑mediated HSP27 transfection on collagen synthesis in alveolar type II epithelial cells. Mol Med Rep 2018; 17:7319-7324. [PMID: 29568951 DOI: 10.3892/mmr.2018.8744] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2017] [Accepted: 01/15/2018] [Indexed: 11/05/2022] Open
Abstract
To investigate the effect of liposome Lipofectamine® 2000‑mediated HSP27 plasmid transfection in A549 human alveolar type II epithelial cell line on collagen synthesis during transforming growth factor‑β1 (TGF‑β1)‑induced type II epithelial cell transition to myofibroblasts. Cells were transfected with varying ratios of the Lipofectamine® 2000‑mediated heat shock protein 27 (HSP27) plasmid and the transfection efficiency was determined using flow cytometry. The maximum transfection efficacy was confirmed by laser confocal microscopy. HSP gene expression and the most efficient HSP27 plasmid were determined using reverse transcription‑quantitative polymerase chain reaction. Western blot analysis was used to examine HSP27 and collagen expression levels. With a transfection efficiency of 83%, the 8 µg:20 µl ratio of liposome: Plasmid had the highest transfection levels. Among the four different interference sequences in the HSP27 plasmid, the D sequence had the highest interference effect with 70% silencing of the HSP27 gene. The expression of type I and III collagen in TGF‑β1‑induced transition of A549 human alveolar type II epithelial cell line to myofibroblasts was significantly downregulated by the successful transfection with HSP27‑interfering plasmid. The expression of type I and III collagen in the TGF‑β1‑induced transition of A549 cells to myofibroblasts was significantly downregulated by transfection of A549 cells with HSP27 plasmid D‑interfering sequence and optimal ratio of Lipofectamine® 2000 and HSP27 plasmid.
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Affiliation(s)
- Haijing Deng
- School of Basic Medical Sciences, North China University of Science and Technology, Tangshan, Hebei 063210, P.R. China
| | - Xuemin Gao
- International Science and Technology Cooperation Base of Geriatric Medicine, North China University of Science and Technology, Tangshan, Hebei 063210, P.R. China
| | - Haibing Peng
- School of Basic Medical Sciences, North China University of Science and Technology, Tangshan, Hebei 063210, P.R. China
| | - Jin Wang
- School of Basic Medical Sciences, North China University of Science and Technology, Tangshan, Hebei 063210, P.R. China
| | - Xiaoli Hou
- School of Basic Medical Sciences, North China University of Science and Technology, Tangshan, Hebei 063210, P.R. China
| | - Hong Xu
- International Science and Technology Cooperation Base of Geriatric Medicine, North China University of Science and Technology, Tangshan, Hebei 063210, P.R. China
| | - Fang Yang
- School of Basic Medical Sciences, North China University of Science and Technology, Tangshan, Hebei 063210, P.R. China
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