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Chen Q, Chen Y, Bao C, Xiang H, Gao Q, Mao L. Mechanism and complex roles of HSC70/HSPA8 in viral entry. Virus Res 2024; 347:199433. [PMID: 38992806 DOI: 10.1016/j.virusres.2024.199433] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2024] [Revised: 07/05/2024] [Accepted: 07/06/2024] [Indexed: 07/13/2024]
Abstract
The process of viruses entering host cells is complex, involving multiple aspects of the molecular organization of the cell membrane, viral proteins, the interaction of receptor molecules, and cellular signaling. Most viruses depend on endocytosis for uptake, when viruses reach the appropriate location, they are released from the vesicles, undergo uncoating, and release their genomes. Heat shock cognate protein 70(HSC70): also known as HSPA8, a protein involved in mediating clathrin-mediated endocytosis (CME), is involved in various viral entry processes. In this mini-review, our goal is to provide a summary of the function of HSC70 in viral entry. Understanding the interaction networks of HSC70 with viral proteins helps to provide new directions for targeted therapeutic strategies against viral infections.
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Affiliation(s)
- Qiaoqiao Chen
- Department of Laboratory Medicine, The Affiliated People's Hospital, Jiangsu University, Zhenjiang, Jiangsu, PR China
| | - Yiwen Chen
- Department of Laboratory Medicine, The Affiliated People's Hospital, Jiangsu University, Zhenjiang, Jiangsu, PR China
| | - Chenxuan Bao
- Department of Laboratory Medicine, Affiliated Kunshan Hospital of Jiangsu University,Kunshan, Jiangsu, PR China
| | - Huayuan Xiang
- Department of Laboratory Medicine, Affiliated Kunshan Hospital of Jiangsu University,Kunshan, Jiangsu, PR China
| | - Qing Gao
- Department of Laboratory Medicine, Affiliated Kunshan Hospital of Jiangsu University,Kunshan, Jiangsu, PR China
| | - Lingxiang Mao
- Department of Laboratory Medicine, The Affiliated People's Hospital, Jiangsu University, Zhenjiang, Jiangsu, PR China; Department of Laboratory Medicine, Affiliated Kunshan Hospital of Jiangsu University,Kunshan, Jiangsu, PR China.
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Muranova LK, Vostrikova VM, Shatov VM, Sluchanko NN, Gusev NB. Interaction of the C-terminal immunoglobulin-like domains (Ig 22-24) of filamin C with human small heat shock proteins. Biochimie 2024; 219:146-154. [PMID: 38016530 DOI: 10.1016/j.biochi.2023.11.010] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2023] [Revised: 11/18/2023] [Accepted: 11/22/2023] [Indexed: 11/30/2023]
Abstract
Small heat shock proteins are the well-known regulators of the cytoskeleton integrity, yet their complexes with actin-binding proteins are underexplored. Filamin C, a dimeric 560 kDa protein, abundant in cardiac and skeletal muscles, crosslinks actin filaments and contributes to Z-disc formation and membrane-cytoskeleton attachment. Here, we analyzed the interaction of a human filamin C fragment containing immunoglobulin-like domains 22-24 (FLNC22-24) with five small heat shock proteins (HspB1, HspB5, HspB6, HspB7, HspB8) and their α-crystallin domains. On size-exclusion chromatography, only HspB7 or its α-crystallin domain formed complexes with FLNC22-24. Despite similar isoelectric points of the small heat shock proteins analyzed, only HspB7 and its α-crystallin domain interacted with FLNC22-24 on native gel electrophoresis. Crosslinking with glutaraldehyde confirmed the formation of complexes between HspB7 (or its α-crystallin domain) and the filamin С fragment, inhibiting intersubunit FLNC crosslinking. These data are consistent with the structure modeling using Alphafold. Thus, the C-terminal fragment (immunoglobulin-like domains 22-24) of filamin C contains the site for HspB7 (or its α-crystallin domain) interaction, which competes with FLNC22-24 dimerization and its probable interaction with different target proteins.
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Affiliation(s)
- Lydia K Muranova
- Department of Biochemistry, School of Biology, Moscow State University, Moscow 119234, Russia
| | - Varvara M Vostrikova
- Department of Biochemistry, School of Biology, Moscow State University, Moscow 119234, Russia
| | - Vladislav M Shatov
- Department of Biochemistry, School of Biology, Moscow State University, Moscow 119234, Russia
| | - Nikolai N Sluchanko
- A.N. Bach Institute of Biochemistry, Federal Research Center "Fundamentals of Biotechnology", Russian Academy of Sciences, Moscow 119071, Russia
| | - Nikolai B Gusev
- Department of Biochemistry, School of Biology, Moscow State University, Moscow 119234, Russia.
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Lechuga S, Marino-Melendez A, Naydenov NG, Zafar A, Braga-Neto MB, Ivanov AI. Regulation of Epithelial and Endothelial Barriers by Molecular Chaperones. Cells 2024; 13:370. [PMID: 38474334 PMCID: PMC10931179 DOI: 10.3390/cells13050370] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2024] [Revised: 02/15/2024] [Accepted: 02/16/2024] [Indexed: 03/14/2024] Open
Abstract
The integrity and permeability of epithelial and endothelial barriers depend on the formation of tight junctions, adherens junctions, and a junction-associated cytoskeleton. The establishment of this junction-cytoskeletal module relies on the correct folding and oligomerization of its protein components. Molecular chaperones are known regulators of protein folding and complex formation in different cellular compartments. Mammalian cells possess an elaborate chaperone network consisting of several hundred chaperones and co-chaperones. Only a small part of this network has been linked, however, to the regulation of intercellular adhesions, and the systematic analysis of chaperone functions at epithelial and endothelial barriers is lacking. This review describes the functions and mechanisms of the chaperone-assisted regulation of intercellular junctions. The major focus of this review is on heat shock protein chaperones, their co-chaperones, and chaperonins since these molecules are the focus of the majority of the articles published on the chaperone-mediated control of tissue barriers. This review discusses the roles of chaperones in the regulation of the steady-state integrity of epithelial and vascular barriers as well as the disruption of these barriers by pathogenic factors and extracellular stressors. Since cytoskeletal coupling is essential for junctional integrity and remodeling, chaperone-assisted assembly of the actomyosin cytoskeleton is also discussed.
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Affiliation(s)
- Susana Lechuga
- Department of Inflammation and Immunity, Lerner Research Institute, Cleveland Clinic Foundation, Cleveland, OH 44195, USA; (S.L.); (A.M.-M.); (N.G.N.); (A.Z.); (M.B.B.-N.)
| | - Armando Marino-Melendez
- Department of Inflammation and Immunity, Lerner Research Institute, Cleveland Clinic Foundation, Cleveland, OH 44195, USA; (S.L.); (A.M.-M.); (N.G.N.); (A.Z.); (M.B.B.-N.)
| | - Nayden G. Naydenov
- Department of Inflammation and Immunity, Lerner Research Institute, Cleveland Clinic Foundation, Cleveland, OH 44195, USA; (S.L.); (A.M.-M.); (N.G.N.); (A.Z.); (M.B.B.-N.)
| | - Atif Zafar
- Department of Inflammation and Immunity, Lerner Research Institute, Cleveland Clinic Foundation, Cleveland, OH 44195, USA; (S.L.); (A.M.-M.); (N.G.N.); (A.Z.); (M.B.B.-N.)
| | - Manuel B. Braga-Neto
- Department of Inflammation and Immunity, Lerner Research Institute, Cleveland Clinic Foundation, Cleveland, OH 44195, USA; (S.L.); (A.M.-M.); (N.G.N.); (A.Z.); (M.B.B.-N.)
- Department of Gastroenterology, Hepatology and Nutrition, Digestive Disease Institute, Cleveland Clinic, Cleveland, OH 44195, USA
| | - Andrei I. Ivanov
- Department of Inflammation and Immunity, Lerner Research Institute, Cleveland Clinic Foundation, Cleveland, OH 44195, USA; (S.L.); (A.M.-M.); (N.G.N.); (A.Z.); (M.B.B.-N.)
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Zhang X, Ma S, Gu C, Hu M, Miao M, Quan Y, Yu W. K64 acetylation of heat shock protein 90 suppresses nucleopolyhedrovirus replication in Bombyx mori. ARCHIVES OF INSECT BIOCHEMISTRY AND PHYSIOLOGY 2024; 115:e22079. [PMID: 38288491 DOI: 10.1002/arch.22079] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/06/2023] [Revised: 12/03/2023] [Accepted: 12/13/2023] [Indexed: 02/01/2024]
Abstract
HSP90 is a highly conserved chaperone that facilitates the proliferation of many viruses, including silkworm (bombyx mori) nucleopolyhedrovirus (BmNPV), but the underlying regulatory mechanism was unclear. We found that suppression of HSP90 by 17-AAG, a HSP90-specific inhibitor, significantly reduced the expression of BmNPV capsid protein gp64 and viral genome replication, whereas overexpression of B. mori HSP90(BmHSP90) promoted BmNPV replication. Furthermore, in a recent study of the lysine acetylome of B. mori infected with BmNPV, we focused on the reduced viral proliferation due to changes of BmHSP90 lysine acetylation. Site-directed introduction of acetylated (K/Q) or deacetylated (K/R) mimic mutations into BmHSP90 revealed that lysine 64 (K64) acetylation activated the JAK/STAT pathway and reduced BmHSP90 ATPase activity, leading to diminished chaperone activity and ultimately inhibiting BmNPV proliferation. In this study, a single lysine 64 acetylation change of BmHSP90 was elucidated as a model of posttranslational modifications occurring in the wake of host-virus interactions, providing novel insights into potential antiviral strategies.
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Affiliation(s)
- Xizhen Zhang
- Department of Biopharmaceuticals, College of Life Sciences and Medicine, Zhejiang Sci-Tech University, Hangzhou, Zhejiang, China
- Zhejiang Provincial Key Laboratory of Silkworm Bioreactor and Biomedicine, Hangzhou, Zhejiang, China
| | - Shiyi Ma
- Department of Biopharmaceuticals, College of Life Sciences and Medicine, Zhejiang Sci-Tech University, Hangzhou, Zhejiang, China
- Zhejiang Provincial Key Laboratory of Silkworm Bioreactor and Biomedicine, Hangzhou, Zhejiang, China
| | - Chaoguang Gu
- Department of Biopharmaceuticals, College of Life Sciences and Medicine, Zhejiang Sci-Tech University, Hangzhou, Zhejiang, China
- Zhejiang Provincial Key Laboratory of Silkworm Bioreactor and Biomedicine, Hangzhou, Zhejiang, China
| | - Miao Hu
- Department of Biopharmaceuticals, College of Life Sciences and Medicine, Zhejiang Sci-Tech University, Hangzhou, Zhejiang, China
- Zhejiang Provincial Key Laboratory of Silkworm Bioreactor and Biomedicine, Hangzhou, Zhejiang, China
| | - Meng Miao
- Department of Biopharmaceuticals, College of Life Sciences and Medicine, Zhejiang Sci-Tech University, Hangzhou, Zhejiang, China
- Zhejiang Provincial Key Laboratory of Silkworm Bioreactor and Biomedicine, Hangzhou, Zhejiang, China
| | - Yanping Quan
- Department of Biopharmaceuticals, College of Life Sciences and Medicine, Zhejiang Sci-Tech University, Hangzhou, Zhejiang, China
- Zhejiang Provincial Key Laboratory of Silkworm Bioreactor and Biomedicine, Hangzhou, Zhejiang, China
| | - Wei Yu
- Department of Biopharmaceuticals, College of Life Sciences and Medicine, Zhejiang Sci-Tech University, Hangzhou, Zhejiang, China
- Zhejiang Provincial Key Laboratory of Silkworm Bioreactor and Biomedicine, Hangzhou, Zhejiang, China
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Ai G, Si J, Cheng Y, Meng R, Wu Z, Xu R, Wang X, Zhai Y, Peng H, Li Y, Dou D, Jing M. The oomycete-specific BAG subfamily maintains protein homeostasis and promotes pathogenicity in an atypical HSP70-independent manner. Cell Rep 2023; 42:113391. [PMID: 37930886 DOI: 10.1016/j.celrep.2023.113391] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2023] [Revised: 09/08/2023] [Accepted: 10/20/2023] [Indexed: 11/08/2023] Open
Abstract
Protein homeostasis is vital for organisms and requires chaperones like the conserved Bcl-2-associated athanogene (BAG) co-chaperones that bind to the heat shock protein 70 (HSP70) through their C-terminal BAG domain (BD). Here, we show an unconventional BAG subfamily exclusively found in oomycetes. Oomycete BAGs feature an atypical N-terminal BD with a short and oomycete-specific α1 helix (α1'), plus a C-terminal small heat shock protein (sHSP) domain. In oomycete pathogen Phytophthora sojae, both BD-α1' and sHSP domains are required for P. sojae BAG (PsBAG) function in cyst germination, pathogenicity, and unfolded protein response assisting in 26S proteasome-mediated degradation of misfolded proteins. PsBAGs form homo- and heterodimers through their unique BD-α1' to function properly, with no recruitment of HSP70s to form the common BAG-HSP70 complex found in other eukaryotes. Our study highlights an oomycete-exclusive protein homeostasis mechanism mediated by atypical BAGs, which provides a potential target for oomycete disease control.
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Affiliation(s)
- Gan Ai
- Department of Plant Pathology, Key Laboratory of Soybean Disease and Pest Control (Ministry of Agriculture and Rural Affairs), Nanjing Agricultural University, Nanjing 210095, China
| | - Jierui Si
- Department of Plant Pathology, Key Laboratory of Soybean Disease and Pest Control (Ministry of Agriculture and Rural Affairs), Nanjing Agricultural University, Nanjing 210095, China
| | - Yang Cheng
- Department of Plant Pathology, Key Laboratory of Soybean Disease and Pest Control (Ministry of Agriculture and Rural Affairs), Nanjing Agricultural University, Nanjing 210095, China
| | - Rui Meng
- Department of Plant Pathology, Key Laboratory of Soybean Disease and Pest Control (Ministry of Agriculture and Rural Affairs), Nanjing Agricultural University, Nanjing 210095, China
| | - Zishan Wu
- Department of Plant Pathology, Key Laboratory of Soybean Disease and Pest Control (Ministry of Agriculture and Rural Affairs), Nanjing Agricultural University, Nanjing 210095, China
| | - Ruofei Xu
- Department of Plant Pathology, Key Laboratory of Soybean Disease and Pest Control (Ministry of Agriculture and Rural Affairs), Nanjing Agricultural University, Nanjing 210095, China
| | - Xiaodan Wang
- Department of Plant Pathology, China Agricultural University, Beijing 100091, China
| | - Ying Zhai
- USDA-ARS, Crop Diseases, Pests and Genetics Research Unit, Parlier, CA 93648, USA
| | - Hao Peng
- USDA-ARS, Crop Diseases, Pests and Genetics Research Unit, Parlier, CA 93648, USA
| | - Yurong Li
- Corteva Agriscience, Johnston, IA 50131, USA
| | - Daolong Dou
- Department of Plant Pathology, Key Laboratory of Soybean Disease and Pest Control (Ministry of Agriculture and Rural Affairs), Nanjing Agricultural University, Nanjing 210095, China
| | - Maofeng Jing
- Department of Plant Pathology, Key Laboratory of Soybean Disease and Pest Control (Ministry of Agriculture and Rural Affairs), Nanjing Agricultural University, Nanjing 210095, China.
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