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Chen Z, Li P, Shen L, Jiang X. Heat shock protein B7 (HSPB7) inhibits lung adenocarcinoma progression by inhibiting glycolysis. Oncol Rep 2023; 50:196. [PMID: 37732539 PMCID: PMC10560864 DOI: 10.3892/or.2023.8633] [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: 05/24/2023] [Accepted: 09/04/2023] [Indexed: 09/22/2023] Open
Abstract
In the present study, it was aimed to investigate the effects and potential mechanisms of heat shock protein B7 (HSPB7) on lung adenocarcinoma (LUAD). Bioinformatic analysis was performed to explore the association between HSPB7 expression and patients with LUAD. MTT, colony formation, wound healing and Transwell assays were performed to examine the proliferative, migratory and invasive abilities of H1975 and A549 cells. Western blot analysis was conducted to determine the corresponding protein expression. Co‑Immunoprecipitation and Chromatin immunoprecipitation assays were carried out to reveal the interaction between HSPB7 and myelodysplastic syndrome 1 and ecotropic viral integration site 1 complex locus (MECOM). In addition, an animal model was conducted by the subcutaneous injection of A549 cells into BALB/c nude mice, and tumor weight and size were measured. HSPB7 was downregulated in LUAD tissues and cells, and its expression level correlated with patient prognosis. Cell functional data revealed that silencing of HSPB7 promoted lung cancer cell proliferation, migration, invasion and epithelial mesenchymal transition (EMT); whereas overexpression of HSPB7 led to the opposite results. Furthermore, bioinformatics analysis showed that HSPB7 inhibited glycolysis. HSPB7 decreased glucose consumption, lactic acid production, and lactate dehydrogenase A, hexokinase 2 and pyruvate kinase muscle isoform 2 protein levels. The results demonstrated that MECOM was a transcription factor of HSPB7. Collectively, these results suggested that HSPB7 is regulated by MECOM, and that HSPB7 attenuates LUAD cell proliferation, migration, invasion and EMT by inhibiting glycolysis.
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Affiliation(s)
- Zhitao Chen
- Department of Thoracic Surgery, Jinan Central Hospital Affiliated to Shandong First Medical University, Jinan, Shandong 250013, P.R. China
| | - Peipei Li
- Department of General Surgery, Jinan Central Hospital Affiliated to Shandong First Medical University, Jinan, Shandong 250013, P.R. China
| | - Lingguang Shen
- Department of General Surgery, Jinan Central Hospital Affiliated to Shandong First Medical University, Jinan, Shandong 250013, P.R. China
| | - Xiuyu Jiang
- Health Management Center, Jinan Central Hospital Affiliated to Shandong First Medical University, Jinan, Shandong 250013, P.R. China
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Deng Y, Yan J. Force-Dependent Structural Changes of Filamin C Rod Domains Regulated by Filamin C Dimer. J Am Chem Soc 2023; 145:14670-14678. [PMID: 37369984 PMCID: PMC10348313 DOI: 10.1021/jacs.3c02303] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2023] [Indexed: 06/29/2023]
Abstract
Filamin C (FLNC), a large dimeric actin-binding protein in muscle cells, plays a critical role in transmitting force in the cytoskeleton and that between membrane receptors and the cytoskeleton. It performs crucial mechanosensing and downstream mechanotransduction functions via force-dependent interactions with signaling proteins. Mutations in FLNC have been linked to muscle and heart diseases. The mechanical responses of the force-bearing elements in FLNC have not been determined. This study investigated the mechanical responses of FLNC domains and their dimerization interface using magnetic tweezers. Results showed high stability of the N-terminal domains in the rod-1 segment but significant changes in the rod-2 domains in response to forces of a few piconewtons (pN). The dimerization interface, formed by the R24 domain, has a lifetime of seconds to tens of seconds at pN forces, and it dissociates within 1 s at forces greater than 14 pN. The findings suggest the FLNC dimerization interface provides sufficient mechanical stability that enables force-dependent structural changes in rod-2 domains for signaling protein binding and maintains structural integrity of the rod-1 domains.
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Affiliation(s)
- Yunxin Deng
- Mechanobiology
Institute, National University of Singapore, Singapore 117411, Singapore
| | - Jie Yan
- Mechanobiology
Institute, National University of Singapore, Singapore 117411, Singapore
- Department
of Physics, National University of Singapore, Singapore 117542, Singapore
- Joint
School of National University of Singapore and Tianjin University, International Campus of Tianjin University, Binhai New City, Fuzhou 350207, China
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Sarcopenia phenotype and impaired muscle function in male mice with fast-twitch muscle-specific knockout of the androgen receptor. Proc Natl Acad Sci U S A 2023; 120:e2218032120. [PMID: 36669097 PMCID: PMC9942915 DOI: 10.1073/pnas.2218032120] [Citation(s) in RCA: 10] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023] Open
Abstract
Sarcopenia is distinct from normal muscle atrophy in that it is closely related to a shift in the muscle fiber type. Deficiency of the anabolic action of androgen on skeletal muscles is associated with sarcopenia; however, the function of the androgen receptor (AR) pathway in sarcopenia remains poorly understood. We generated a mouse model (fast-twitch muscle-specific AR knockout [fmARKO] mice) in which the AR was selectively deleted in the fast-twitch muscle fibers. In young male mice, the deletion caused no change in muscle mass, but it reduced muscle strength and fatigue resistance and induced a shift in the soleus muscles from fast-twitch fibers to slow-twitch fibers (14% increase, P = 0.02). After middle age, with the control mice, the male fmARKO mice showed much less muscle function, accompanied by lower hindlimb muscle mass; this phenotype was similar to the progression of sarcopenia. The bone mineral density of the femur was significantly reduced in the fmARKO mice, indicating possible osteosarcopenia. Microarray and gene ontology analyses revealed that in male fmARKO mice, there was downregulation of polyamine biosynthesis-related geneswhich was confirmed by liquid chromatography-tandem mass spectrometry assay and the primary cultured myofibers. None of the AR deletion-related phenotypes were observed in female fmARKO mice. Our findings showed that the AR pathway had essential muscle type- and sex-specific roles in the differentiation toward fast-twitch fibers and in the maintenance of muscle composition and function. The AR in fast-twitch muscles was the dominant regulator of muscle fiber-type composition and muscle function, including the muscle-bone relationship.
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The Role of Small Heat Shock Proteins in Protein Misfolding Associated Motoneuron Diseases. Int J Mol Sci 2022; 23:ijms231911759. [PMID: 36233058 PMCID: PMC9569637 DOI: 10.3390/ijms231911759] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2022] [Revised: 09/29/2022] [Accepted: 09/30/2022] [Indexed: 11/17/2022] Open
Abstract
Motoneuron diseases (MNDs) are neurodegenerative conditions associated with death of upper and/or lower motoneurons (MNs). Proteostasis alteration is a pathogenic mechanism involved in many MNDs and is due to the excessive presence of misfolded and aggregated proteins. Protein misfolding may be the product of gene mutations, or due to defects in the translation process, or to stress agents; all these conditions may alter the native conformation of proteins making them prone to aggregate. Alternatively, mutations in members of the protein quality control (PQC) system may determine a loss of function of the proteostasis network. This causes an impairment in the capability to handle and remove aberrant or damaged proteins. The PQC system consists of the degradative pathways, which are the autophagy and the proteasome, and a network of chaperones and co-chaperones. Among these components, Heat Shock Protein 70 represents the main factor in substrate triage to folding, refolding, or degradation, and it is assisted in this task by a subclass of the chaperone network, the small heat shock protein (sHSPs/HSPBs) family. HSPBs take part in proteostasis by bridging misfolded and aggregated proteins to the HSP70 machinery and to the degradative pathways, facilitating refolding or clearance of the potentially toxic proteins. Because of its activity against proteostasis alteration, the chaperone system plays a relevant role in the protection against proteotoxicity in MNDs. Here, we discuss the role of HSPBs in MNDs and which HSPBs may represent a valid target for therapeutic purposes.
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Muranova LK, Shatov VM, Gusev NB. Role of Small Heat Shock Proteins in the Remodeling of Actin Microfilaments. BIOCHEMISTRY. BIOKHIMIIA 2022; 87:800-811. [PMID: 36171660 DOI: 10.1134/s0006297922080119] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/14/2022] [Revised: 04/28/2022] [Accepted: 04/28/2022] [Indexed: 06/16/2023]
Abstract
Small heat shock proteins (sHsps) play an important role in the maintenance of proteome stability and, particularly, in stabilization of the cytoskeleton and cell contractile apparatus. Cell exposure to different types of stress is accompanied by the translocation of sHsps onto actin filaments; therefore, it is commonly believed that the sHsps are true actin-binding proteins. Investigations of last years have shown that this assumption is incorrect. Stress-induced translocation of sHsp to actin filaments is not the result of direct interaction of these proteins with intact actin, but results from the chaperone-like activity of sHsps and their interaction with various actin-binding proteins. HspB1 and HspB5 interact with giant elastic proteins titin and filamin thus providing an integrity of the contractile apparatus and its proper localization in the cell. HspB6 binds to the universal adapter protein 14-3-3 and only indirectly affects the structure of actin filament. HspB7 interacts with filamin C and controls actin filament assembly. HspB8 forms tight complex with the universal regulatory and adapter protein Bag3 and participates in the chaperone-assisted selective autophagy (CASA) of actin-binding proteins (e.g., filamin), as well as in the actin-depending processes taking place in mitoses. Hence, the mechanisms of sHsp participation in the maintenance of the contractile apparatus and cytoskeleton are much more complicated and diverse than it has been postulated earlier and are not limited to direct interactions of sHsps with actin. The old hypothesis on the direct binding of sHsps to intact actin should be revised and further detailed investigation on the sHsp interaction with minor proteins participating in the formation and remodeling of actin filaments is required.
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Affiliation(s)
- Lydia K Muranova
- Faculty of Biology, Lomonosov Moscow State University, Moscow, 119991, Russia
| | - Vladislav M Shatov
- Faculty of Biology, Lomonosov Moscow State University, Moscow, 119991, Russia
| | - Nikolai B Gusev
- Faculty of Biology, Lomonosov Moscow State University, Moscow, 119991, Russia.
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Tedesco B, Cristofani R, Ferrari V, Cozzi M, Rusmini P, Casarotto E, Chierichetti M, Mina F, Galbiati M, Piccolella M, Crippa V, Poletti A. Insights on Human Small Heat Shock Proteins and Their Alterations in Diseases. Front Mol Biosci 2022; 9:842149. [PMID: 35281256 PMCID: PMC8913478 DOI: 10.3389/fmolb.2022.842149] [Citation(s) in RCA: 26] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2021] [Accepted: 01/19/2022] [Indexed: 11/13/2022] Open
Abstract
The family of the human small Heat Shock Proteins (HSPBs) consists of ten members of chaperones (HSPB1-HSPB10), characterized by a low molecular weight and capable of dimerization and oligomerization forming large homo- or hetero-complexes. All HSPBs possess a highly conserved centrally located α-crystallin domain and poorly conserved N- and C-terminal domains. The main feature of HSPBs is to exert cytoprotective functions by preserving proteostasis, assuring the structural maintenance of the cytoskeleton and acting in response to cellular stresses and apoptosis. HSPBs take part in cell homeostasis by acting as holdases, which is the ability to interact with a substrate preventing its aggregation. In addition, HSPBs cooperate in substrates refolding driven by other chaperones or, alternatively, promote substrate routing to degradation. Notably, while some HSPBs are ubiquitously expressed, others show peculiar tissue-specific expression. Cardiac muscle, skeletal muscle and neurons show high expression levels for a wide variety of HSPBs. Indeed, most of the mutations identified in HSPBs are associated to cardiomyopathies, myopathies, and motor neuropathies. Instead, mutations in HSPB4 and HSPB5, which are also expressed in lens, have been associated with cataract. Mutations of HSPBs family members encompass base substitutions, insertions, and deletions, resulting in single amino acid substitutions or in the generation of truncated or elongated proteins. This review will provide an updated overview of disease-related mutations in HSPBs focusing on the structural and biochemical effects of mutations and their functional consequences.
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Affiliation(s)
- B. Tedesco
- Dipartimento di Scienze Farmacologiche e Biomolecolari, Università degli Studi di Milano, Milan, Italy
- Unit of Medical Genetics and Neurogenetics, Fondazione IRCCS Istituto Neurologico Carlo Besta, Milan, Italy
| | - R. Cristofani
- Dipartimento di Scienze Farmacologiche e Biomolecolari, Università degli Studi di Milano, Milan, Italy
| | - V. Ferrari
- Dipartimento di Scienze Farmacologiche e Biomolecolari, Università degli Studi di Milano, Milan, Italy
| | - M. Cozzi
- Dipartimento di Scienze Farmacologiche e Biomolecolari, Università degli Studi di Milano, Milan, Italy
| | - P. Rusmini
- Dipartimento di Scienze Farmacologiche e Biomolecolari, Università degli Studi di Milano, Milan, Italy
| | - E. Casarotto
- Dipartimento di Scienze Farmacologiche e Biomolecolari, Università degli Studi di Milano, Milan, Italy
| | - M. Chierichetti
- Dipartimento di Scienze Farmacologiche e Biomolecolari, Università degli Studi di Milano, Milan, Italy
| | - F. Mina
- Dipartimento di Scienze Farmacologiche e Biomolecolari, Università degli Studi di Milano, Milan, Italy
| | - M. Galbiati
- Dipartimento di Scienze Farmacologiche e Biomolecolari, Università degli Studi di Milano, Milan, Italy
| | - M. Piccolella
- Dipartimento di Scienze Farmacologiche e Biomolecolari, Università degli Studi di Milano, Milan, Italy
| | - V. Crippa
- Dipartimento di Scienze Farmacologiche e Biomolecolari, Università degli Studi di Milano, Milan, Italy
| | - A. Poletti
- Dipartimento di Scienze Farmacologiche e Biomolecolari, Università degli Studi di Milano, Milan, Italy
- *Correspondence: A. Poletti,
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Li Y, Wang J, Elzo MA, Fan H, Du K, Xia S, Shao J, Lai T, Hu S, Jia X, Lai S. Molecular Profiling of DNA Methylation and Alternative Splicing of Genes in Skeletal Muscle of Obese Rabbits. Curr Issues Mol Biol 2021; 43:1558-1575. [PMID: 34698087 PMCID: PMC8929151 DOI: 10.3390/cimb43030110] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2021] [Revised: 10/05/2021] [Accepted: 10/07/2021] [Indexed: 12/11/2022] Open
Abstract
DNA methylation and the alternative splicing of precursor messenger RNAs (pre-mRNAs) are two important genetic modification mechanisms. However, both are currently uncharacterized in the muscle metabolism of rabbits. Thus, we constructed the Tianfu black rabbit obesity model (obese rabbits fed with a 10% high-fat diet and control rabbits from 35 days to 70 days) and collected the skeletal muscle samples from the two groups for Genome methylation sequencing and RNA sequencing. DNA methylation data showed that the promoter regions of 599 genes and gene body region of 2522 genes had significantly differential methylation rates between the two groups, of which 288 genes had differential methylation rates in promoter and gene body regions. Analysis of alternative splicing showed 555 genes involved in exon skipping (ES) patterns, and 15 genes existed in differential methylation regions. Network analysis showed that 20 hub genes were associated with ubiquitinated protein degradation, muscle development pathways, and skeletal muscle energy metabolism. Our findings suggest that the two types of genetic modification have potential regulatory effects on skeletal muscle development and provide a basis for further mechanistic studies in the rabbit.
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Affiliation(s)
- Yanhong Li
- College of Animal Science and Technology, Sichuan Agricultural University, Chengdu 611130, China; (Y.L.); (J.W.); (H.F.); (K.D.); (S.X.); (J.S.); (T.L.); (S.H.); (X.J.)
| | - Jie Wang
- College of Animal Science and Technology, Sichuan Agricultural University, Chengdu 611130, China; (Y.L.); (J.W.); (H.F.); (K.D.); (S.X.); (J.S.); (T.L.); (S.H.); (X.J.)
| | - Mauricio A. Elzo
- Department of Animal Sciences, University of Florida, Gainesville, FL 32611, USA;
| | - Huimei Fan
- College of Animal Science and Technology, Sichuan Agricultural University, Chengdu 611130, China; (Y.L.); (J.W.); (H.F.); (K.D.); (S.X.); (J.S.); (T.L.); (S.H.); (X.J.)
| | - Kun Du
- College of Animal Science and Technology, Sichuan Agricultural University, Chengdu 611130, China; (Y.L.); (J.W.); (H.F.); (K.D.); (S.X.); (J.S.); (T.L.); (S.H.); (X.J.)
| | - Siqi Xia
- College of Animal Science and Technology, Sichuan Agricultural University, Chengdu 611130, China; (Y.L.); (J.W.); (H.F.); (K.D.); (S.X.); (J.S.); (T.L.); (S.H.); (X.J.)
| | - Jiahao Shao
- College of Animal Science and Technology, Sichuan Agricultural University, Chengdu 611130, China; (Y.L.); (J.W.); (H.F.); (K.D.); (S.X.); (J.S.); (T.L.); (S.H.); (X.J.)
| | - Tianfu Lai
- College of Animal Science and Technology, Sichuan Agricultural University, Chengdu 611130, China; (Y.L.); (J.W.); (H.F.); (K.D.); (S.X.); (J.S.); (T.L.); (S.H.); (X.J.)
| | - Shenqiang Hu
- College of Animal Science and Technology, Sichuan Agricultural University, Chengdu 611130, China; (Y.L.); (J.W.); (H.F.); (K.D.); (S.X.); (J.S.); (T.L.); (S.H.); (X.J.)
| | - Xianbo Jia
- College of Animal Science and Technology, Sichuan Agricultural University, Chengdu 611130, China; (Y.L.); (J.W.); (H.F.); (K.D.); (S.X.); (J.S.); (T.L.); (S.H.); (X.J.)
| | - Songjia Lai
- College of Animal Science and Technology, Sichuan Agricultural University, Chengdu 611130, China; (Y.L.); (J.W.); (H.F.); (K.D.); (S.X.); (J.S.); (T.L.); (S.H.); (X.J.)
- Correspondence:
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Abstract
Cardiomyopathy affects approximately 1 in 500 adults and is the leading cause of death. Familial cases are common, and mutations in many genes are involved in cardiomyopathy, especially those in genes encoding cytoskeletal, sarcomere, and nuclear envelope proteins. Filamin C is an actin-binding protein encoded by filamin C (FLNC) gene and participates in sarcomere stability maintenance. FLNC was first demonstrated to be a causal gene of myofibrillar myopathy; recently, it has been found that FLNC mutation plays a critical role in the pathogenesis of cardiomyopathy. In this review, we summarized the physiological roles of filamin C in cardiomyocytes and the genetic evidence for links between FLNC mutations and cardiomyopathies. Truncated FLNC is enriched in dilated cardiomyopathy and arrhythmogenic right ventricular cardiomyopathy. Non-truncated FLNC is enriched in hypertrophic cardiomyopathy and restrictive cardiomyopathy. Two major pathomechanisms in FLNC-related cardiomyopathy have been described: protein aggregation resulting from non-truncating mutations and haploinsufficiency triggered by filamin C truncation. Therefore, it is important to understand the cellular biology and molecular regulation of FLNC to design new therapies to treat patients with FLNC-related cardiomyopathy.
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Muranova LK, Shatov VM, Slushchev AV, Gusev NB. Quaternary Structure and Hetero-Oligomerization of Recombinant Human Small Heat Shock Protein HspB7 (cvHsp). Int J Mol Sci 2021; 22:ijms22157777. [PMID: 34360542 PMCID: PMC8345930 DOI: 10.3390/ijms22157777] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2021] [Revised: 07/13/2021] [Accepted: 07/16/2021] [Indexed: 01/02/2023] Open
Abstract
In this study, a reliable and simple method of untagged recombinant human HspB7 preparation was developed. Recombinant HspB7 is presented in two oligomeric forms with an apparent molecular weight of 36 kDa (probably dimers) and oligomers with an apparent molecular weight of more than 600 kDa. By using hydrophobic and size-exclusion chromatography, we succeeded in preparation of HspB7 dimers. Mild oxidation promoted the formation of large oligomers, whereas the modification of Cys 126 by iodoacetamide prevented it. The deletion of the first 13 residues or deletion of the polySer motif (residues 17–29) also prevented the formation of large oligomers of HspB7. Cys-mutants of HspB6 and HspB8 containing a single-Cys residue in the central part of the β7 strand in a position homologous to that of Cys137 in HspB1 can be crosslinked to the wild-type HspB7 through a disulfide bond. Immobilized on monoclonal antibodies, the wild-type HspB6 interacted with the wild-type HspB7. We suppose that formation of heterodimers of HspB7 with HspB6 and HspB8 may be important for the functional activity of these small heat shock proteins.
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Kley RA, Leber Y, Schrank B, Zhuge H, Orfanos Z, Kostan J, Onipe A, Sellung D, Güttsches AK, Eggers B, Jacobsen F, Kress W, Marcus K, Djinovic-Carugo K, van der Ven PFM, Fürst DO, Vorgerd M. FLNC-Associated Myofibrillar Myopathy: New Clinical, Functional, and Proteomic Data. NEUROLOGY-GENETICS 2021; 7:e590. [PMID: 34235269 PMCID: PMC8237399 DOI: 10.1212/nxg.0000000000000590] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/23/2020] [Accepted: 12/28/2020] [Indexed: 11/15/2022]
Abstract
Objective To determine whether a new indel mutation in the dimerization domain of filamin C (FLNc) causes a hereditary myopathy with protein aggregation in muscle fibers, we clinically and molecularly studied a German family with autosomal dominant myofibrillar myopathy (MFM). Methods We performed mutational analysis in 3 generations, muscle histopathology, and proteomic studies of IM protein aggregates. Functional consequences of the FLNC mutation were investigated with interaction and transfection studies and biophysics molecular analysis. Results Eight patients revealed clinical features of slowly progressive proximal weakness associated with a heterozygous c.8025_8030delCAAGACinsA (p.K2676Pfs*3) mutation in FLNC. Two patients exhibited a mild cardiomyopathy. MRI of skeletal muscle revealed lipomatous changes typical for MFM with FLNC mutations. Muscle biopsies showed characteristic MFM findings with protein aggregation and lesion formation. The proteomic profile of aggregates was specific for MFM-filaminopathy and indicated activation of the ubiquitin-proteasome system (UPS) and autophagic pathways. Functional studies revealed that mutant FLNc is misfolded, unstable, and incapable of forming homodimers and heterodimers with wild-type FLNc. Conclusions This new MFM-filaminopathy family confirms that expression of mutant FLNC leads to an adult-onset muscle phenotype with intracellular protein accumulation. Mutant FLNc protein is biochemically compromised and leads to dysregulation of protein quality control mechanisms. Proteomic analysis of MFM protein aggregates is a potent method to identify disease-relevant proteins, differentiate MFM subtypes, evaluate the relevance of gene variants, and identify novel MFM candidate genes.
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Affiliation(s)
- Rudolf Andre Kley
- Department of Neurology (R.A.K., H.Z., D.S., A.K.G., F.J., M.V.), Heimer Institute for Muscle Research, University Hospital Bergmannsheil, Ruhr-University Bochum, Bochum, Germany; Department of Neurology and Clinical Neurophysiology (R.A.K.), St. Marien-Hospital Borken, Borken, Germany; Department of Molecular Cell Biology (Y.L., Z.O., P.F.M.V., D.O.F.), Institute for Cell Biology, University of Bonn, Bonn, Germany; Department of Neurology (B.S.), DKD HELIOS Klinik Wiesbaden, Wiesbaden, Germany; Department of Structural and Computational Biology (J.K., A.O., K.D.-C.), Max Perutz Laboratories, University of Vienna, Vienna, Austria; Medizinisches Proteom-Center (B.E., K.M.), Ruhr-University Bochum, Bochum, Germany; Institute of Human Genetics (W.K.), University of Würzburg, Würzburg, Germany; and Department of Biochemistry (K.D.-C.), Faculty of Chemistry and Chemical Technology, University of Ljubljana, Ljubljana, Slovenia
| | - Yvonne Leber
- Department of Neurology (R.A.K., H.Z., D.S., A.K.G., F.J., M.V.), Heimer Institute for Muscle Research, University Hospital Bergmannsheil, Ruhr-University Bochum, Bochum, Germany; Department of Neurology and Clinical Neurophysiology (R.A.K.), St. Marien-Hospital Borken, Borken, Germany; Department of Molecular Cell Biology (Y.L., Z.O., P.F.M.V., D.O.F.), Institute for Cell Biology, University of Bonn, Bonn, Germany; Department of Neurology (B.S.), DKD HELIOS Klinik Wiesbaden, Wiesbaden, Germany; Department of Structural and Computational Biology (J.K., A.O., K.D.-C.), Max Perutz Laboratories, University of Vienna, Vienna, Austria; Medizinisches Proteom-Center (B.E., K.M.), Ruhr-University Bochum, Bochum, Germany; Institute of Human Genetics (W.K.), University of Würzburg, Würzburg, Germany; and Department of Biochemistry (K.D.-C.), Faculty of Chemistry and Chemical Technology, University of Ljubljana, Ljubljana, Slovenia
| | - Bertold Schrank
- Department of Neurology (R.A.K., H.Z., D.S., A.K.G., F.J., M.V.), Heimer Institute for Muscle Research, University Hospital Bergmannsheil, Ruhr-University Bochum, Bochum, Germany; Department of Neurology and Clinical Neurophysiology (R.A.K.), St. Marien-Hospital Borken, Borken, Germany; Department of Molecular Cell Biology (Y.L., Z.O., P.F.M.V., D.O.F.), Institute for Cell Biology, University of Bonn, Bonn, Germany; Department of Neurology (B.S.), DKD HELIOS Klinik Wiesbaden, Wiesbaden, Germany; Department of Structural and Computational Biology (J.K., A.O., K.D.-C.), Max Perutz Laboratories, University of Vienna, Vienna, Austria; Medizinisches Proteom-Center (B.E., K.M.), Ruhr-University Bochum, Bochum, Germany; Institute of Human Genetics (W.K.), University of Würzburg, Würzburg, Germany; and Department of Biochemistry (K.D.-C.), Faculty of Chemistry and Chemical Technology, University of Ljubljana, Ljubljana, Slovenia
| | - Heidi Zhuge
- Department of Neurology (R.A.K., H.Z., D.S., A.K.G., F.J., M.V.), Heimer Institute for Muscle Research, University Hospital Bergmannsheil, Ruhr-University Bochum, Bochum, Germany; Department of Neurology and Clinical Neurophysiology (R.A.K.), St. Marien-Hospital Borken, Borken, Germany; Department of Molecular Cell Biology (Y.L., Z.O., P.F.M.V., D.O.F.), Institute for Cell Biology, University of Bonn, Bonn, Germany; Department of Neurology (B.S.), DKD HELIOS Klinik Wiesbaden, Wiesbaden, Germany; Department of Structural and Computational Biology (J.K., A.O., K.D.-C.), Max Perutz Laboratories, University of Vienna, Vienna, Austria; Medizinisches Proteom-Center (B.E., K.M.), Ruhr-University Bochum, Bochum, Germany; Institute of Human Genetics (W.K.), University of Würzburg, Würzburg, Germany; and Department of Biochemistry (K.D.-C.), Faculty of Chemistry and Chemical Technology, University of Ljubljana, Ljubljana, Slovenia
| | - Zacharias Orfanos
- Department of Neurology (R.A.K., H.Z., D.S., A.K.G., F.J., M.V.), Heimer Institute for Muscle Research, University Hospital Bergmannsheil, Ruhr-University Bochum, Bochum, Germany; Department of Neurology and Clinical Neurophysiology (R.A.K.), St. Marien-Hospital Borken, Borken, Germany; Department of Molecular Cell Biology (Y.L., Z.O., P.F.M.V., D.O.F.), Institute for Cell Biology, University of Bonn, Bonn, Germany; Department of Neurology (B.S.), DKD HELIOS Klinik Wiesbaden, Wiesbaden, Germany; Department of Structural and Computational Biology (J.K., A.O., K.D.-C.), Max Perutz Laboratories, University of Vienna, Vienna, Austria; Medizinisches Proteom-Center (B.E., K.M.), Ruhr-University Bochum, Bochum, Germany; Institute of Human Genetics (W.K.), University of Würzburg, Würzburg, Germany; and Department of Biochemistry (K.D.-C.), Faculty of Chemistry and Chemical Technology, University of Ljubljana, Ljubljana, Slovenia
| | - Julius Kostan
- Department of Neurology (R.A.K., H.Z., D.S., A.K.G., F.J., M.V.), Heimer Institute for Muscle Research, University Hospital Bergmannsheil, Ruhr-University Bochum, Bochum, Germany; Department of Neurology and Clinical Neurophysiology (R.A.K.), St. Marien-Hospital Borken, Borken, Germany; Department of Molecular Cell Biology (Y.L., Z.O., P.F.M.V., D.O.F.), Institute for Cell Biology, University of Bonn, Bonn, Germany; Department of Neurology (B.S.), DKD HELIOS Klinik Wiesbaden, Wiesbaden, Germany; Department of Structural and Computational Biology (J.K., A.O., K.D.-C.), Max Perutz Laboratories, University of Vienna, Vienna, Austria; Medizinisches Proteom-Center (B.E., K.M.), Ruhr-University Bochum, Bochum, Germany; Institute of Human Genetics (W.K.), University of Würzburg, Würzburg, Germany; and Department of Biochemistry (K.D.-C.), Faculty of Chemistry and Chemical Technology, University of Ljubljana, Ljubljana, Slovenia
| | - Adekunle Onipe
- Department of Neurology (R.A.K., H.Z., D.S., A.K.G., F.J., M.V.), Heimer Institute for Muscle Research, University Hospital Bergmannsheil, Ruhr-University Bochum, Bochum, Germany; Department of Neurology and Clinical Neurophysiology (R.A.K.), St. Marien-Hospital Borken, Borken, Germany; Department of Molecular Cell Biology (Y.L., Z.O., P.F.M.V., D.O.F.), Institute for Cell Biology, University of Bonn, Bonn, Germany; Department of Neurology (B.S.), DKD HELIOS Klinik Wiesbaden, Wiesbaden, Germany; Department of Structural and Computational Biology (J.K., A.O., K.D.-C.), Max Perutz Laboratories, University of Vienna, Vienna, Austria; Medizinisches Proteom-Center (B.E., K.M.), Ruhr-University Bochum, Bochum, Germany; Institute of Human Genetics (W.K.), University of Würzburg, Würzburg, Germany; and Department of Biochemistry (K.D.-C.), Faculty of Chemistry and Chemical Technology, University of Ljubljana, Ljubljana, Slovenia
| | - Dominik Sellung
- Department of Neurology (R.A.K., H.Z., D.S., A.K.G., F.J., M.V.), Heimer Institute for Muscle Research, University Hospital Bergmannsheil, Ruhr-University Bochum, Bochum, Germany; Department of Neurology and Clinical Neurophysiology (R.A.K.), St. Marien-Hospital Borken, Borken, Germany; Department of Molecular Cell Biology (Y.L., Z.O., P.F.M.V., D.O.F.), Institute for Cell Biology, University of Bonn, Bonn, Germany; Department of Neurology (B.S.), DKD HELIOS Klinik Wiesbaden, Wiesbaden, Germany; Department of Structural and Computational Biology (J.K., A.O., K.D.-C.), Max Perutz Laboratories, University of Vienna, Vienna, Austria; Medizinisches Proteom-Center (B.E., K.M.), Ruhr-University Bochum, Bochum, Germany; Institute of Human Genetics (W.K.), University of Würzburg, Würzburg, Germany; and Department of Biochemistry (K.D.-C.), Faculty of Chemistry and Chemical Technology, University of Ljubljana, Ljubljana, Slovenia
| | - Anne Katrin Güttsches
- Department of Neurology (R.A.K., H.Z., D.S., A.K.G., F.J., M.V.), Heimer Institute for Muscle Research, University Hospital Bergmannsheil, Ruhr-University Bochum, Bochum, Germany; Department of Neurology and Clinical Neurophysiology (R.A.K.), St. Marien-Hospital Borken, Borken, Germany; Department of Molecular Cell Biology (Y.L., Z.O., P.F.M.V., D.O.F.), Institute for Cell Biology, University of Bonn, Bonn, Germany; Department of Neurology (B.S.), DKD HELIOS Klinik Wiesbaden, Wiesbaden, Germany; Department of Structural and Computational Biology (J.K., A.O., K.D.-C.), Max Perutz Laboratories, University of Vienna, Vienna, Austria; Medizinisches Proteom-Center (B.E., K.M.), Ruhr-University Bochum, Bochum, Germany; Institute of Human Genetics (W.K.), University of Würzburg, Würzburg, Germany; and Department of Biochemistry (K.D.-C.), Faculty of Chemistry and Chemical Technology, University of Ljubljana, Ljubljana, Slovenia
| | - Britta Eggers
- Department of Neurology (R.A.K., H.Z., D.S., A.K.G., F.J., M.V.), Heimer Institute for Muscle Research, University Hospital Bergmannsheil, Ruhr-University Bochum, Bochum, Germany; Department of Neurology and Clinical Neurophysiology (R.A.K.), St. Marien-Hospital Borken, Borken, Germany; Department of Molecular Cell Biology (Y.L., Z.O., P.F.M.V., D.O.F.), Institute for Cell Biology, University of Bonn, Bonn, Germany; Department of Neurology (B.S.), DKD HELIOS Klinik Wiesbaden, Wiesbaden, Germany; Department of Structural and Computational Biology (J.K., A.O., K.D.-C.), Max Perutz Laboratories, University of Vienna, Vienna, Austria; Medizinisches Proteom-Center (B.E., K.M.), Ruhr-University Bochum, Bochum, Germany; Institute of Human Genetics (W.K.), University of Würzburg, Würzburg, Germany; and Department of Biochemistry (K.D.-C.), Faculty of Chemistry and Chemical Technology, University of Ljubljana, Ljubljana, Slovenia
| | - Frank Jacobsen
- Department of Neurology (R.A.K., H.Z., D.S., A.K.G., F.J., M.V.), Heimer Institute for Muscle Research, University Hospital Bergmannsheil, Ruhr-University Bochum, Bochum, Germany; Department of Neurology and Clinical Neurophysiology (R.A.K.), St. Marien-Hospital Borken, Borken, Germany; Department of Molecular Cell Biology (Y.L., Z.O., P.F.M.V., D.O.F.), Institute for Cell Biology, University of Bonn, Bonn, Germany; Department of Neurology (B.S.), DKD HELIOS Klinik Wiesbaden, Wiesbaden, Germany; Department of Structural and Computational Biology (J.K., A.O., K.D.-C.), Max Perutz Laboratories, University of Vienna, Vienna, Austria; Medizinisches Proteom-Center (B.E., K.M.), Ruhr-University Bochum, Bochum, Germany; Institute of Human Genetics (W.K.), University of Würzburg, Würzburg, Germany; and Department of Biochemistry (K.D.-C.), Faculty of Chemistry and Chemical Technology, University of Ljubljana, Ljubljana, Slovenia
| | - Wolfram Kress
- Department of Neurology (R.A.K., H.Z., D.S., A.K.G., F.J., M.V.), Heimer Institute for Muscle Research, University Hospital Bergmannsheil, Ruhr-University Bochum, Bochum, Germany; Department of Neurology and Clinical Neurophysiology (R.A.K.), St. Marien-Hospital Borken, Borken, Germany; Department of Molecular Cell Biology (Y.L., Z.O., P.F.M.V., D.O.F.), Institute for Cell Biology, University of Bonn, Bonn, Germany; Department of Neurology (B.S.), DKD HELIOS Klinik Wiesbaden, Wiesbaden, Germany; Department of Structural and Computational Biology (J.K., A.O., K.D.-C.), Max Perutz Laboratories, University of Vienna, Vienna, Austria; Medizinisches Proteom-Center (B.E., K.M.), Ruhr-University Bochum, Bochum, Germany; Institute of Human Genetics (W.K.), University of Würzburg, Würzburg, Germany; and Department of Biochemistry (K.D.-C.), Faculty of Chemistry and Chemical Technology, University of Ljubljana, Ljubljana, Slovenia
| | - Katrin Marcus
- Department of Neurology (R.A.K., H.Z., D.S., A.K.G., F.J., M.V.), Heimer Institute for Muscle Research, University Hospital Bergmannsheil, Ruhr-University Bochum, Bochum, Germany; Department of Neurology and Clinical Neurophysiology (R.A.K.), St. Marien-Hospital Borken, Borken, Germany; Department of Molecular Cell Biology (Y.L., Z.O., P.F.M.V., D.O.F.), Institute for Cell Biology, University of Bonn, Bonn, Germany; Department of Neurology (B.S.), DKD HELIOS Klinik Wiesbaden, Wiesbaden, Germany; Department of Structural and Computational Biology (J.K., A.O., K.D.-C.), Max Perutz Laboratories, University of Vienna, Vienna, Austria; Medizinisches Proteom-Center (B.E., K.M.), Ruhr-University Bochum, Bochum, Germany; Institute of Human Genetics (W.K.), University of Würzburg, Würzburg, Germany; and Department of Biochemistry (K.D.-C.), Faculty of Chemistry and Chemical Technology, University of Ljubljana, Ljubljana, Slovenia
| | - Kristina Djinovic-Carugo
- Department of Neurology (R.A.K., H.Z., D.S., A.K.G., F.J., M.V.), Heimer Institute for Muscle Research, University Hospital Bergmannsheil, Ruhr-University Bochum, Bochum, Germany; Department of Neurology and Clinical Neurophysiology (R.A.K.), St. Marien-Hospital Borken, Borken, Germany; Department of Molecular Cell Biology (Y.L., Z.O., P.F.M.V., D.O.F.), Institute for Cell Biology, University of Bonn, Bonn, Germany; Department of Neurology (B.S.), DKD HELIOS Klinik Wiesbaden, Wiesbaden, Germany; Department of Structural and Computational Biology (J.K., A.O., K.D.-C.), Max Perutz Laboratories, University of Vienna, Vienna, Austria; Medizinisches Proteom-Center (B.E., K.M.), Ruhr-University Bochum, Bochum, Germany; Institute of Human Genetics (W.K.), University of Würzburg, Würzburg, Germany; and Department of Biochemistry (K.D.-C.), Faculty of Chemistry and Chemical Technology, University of Ljubljana, Ljubljana, Slovenia
| | - Peter F M van der Ven
- Department of Neurology (R.A.K., H.Z., D.S., A.K.G., F.J., M.V.), Heimer Institute for Muscle Research, University Hospital Bergmannsheil, Ruhr-University Bochum, Bochum, Germany; Department of Neurology and Clinical Neurophysiology (R.A.K.), St. Marien-Hospital Borken, Borken, Germany; Department of Molecular Cell Biology (Y.L., Z.O., P.F.M.V., D.O.F.), Institute for Cell Biology, University of Bonn, Bonn, Germany; Department of Neurology (B.S.), DKD HELIOS Klinik Wiesbaden, Wiesbaden, Germany; Department of Structural and Computational Biology (J.K., A.O., K.D.-C.), Max Perutz Laboratories, University of Vienna, Vienna, Austria; Medizinisches Proteom-Center (B.E., K.M.), Ruhr-University Bochum, Bochum, Germany; Institute of Human Genetics (W.K.), University of Würzburg, Würzburg, Germany; and Department of Biochemistry (K.D.-C.), Faculty of Chemistry and Chemical Technology, University of Ljubljana, Ljubljana, Slovenia
| | - Dieter O Fürst
- Department of Neurology (R.A.K., H.Z., D.S., A.K.G., F.J., M.V.), Heimer Institute for Muscle Research, University Hospital Bergmannsheil, Ruhr-University Bochum, Bochum, Germany; Department of Neurology and Clinical Neurophysiology (R.A.K.), St. Marien-Hospital Borken, Borken, Germany; Department of Molecular Cell Biology (Y.L., Z.O., P.F.M.V., D.O.F.), Institute for Cell Biology, University of Bonn, Bonn, Germany; Department of Neurology (B.S.), DKD HELIOS Klinik Wiesbaden, Wiesbaden, Germany; Department of Structural and Computational Biology (J.K., A.O., K.D.-C.), Max Perutz Laboratories, University of Vienna, Vienna, Austria; Medizinisches Proteom-Center (B.E., K.M.), Ruhr-University Bochum, Bochum, Germany; Institute of Human Genetics (W.K.), University of Würzburg, Würzburg, Germany; and Department of Biochemistry (K.D.-C.), Faculty of Chemistry and Chemical Technology, University of Ljubljana, Ljubljana, Slovenia
| | - Matthias Vorgerd
- Department of Neurology (R.A.K., H.Z., D.S., A.K.G., F.J., M.V.), Heimer Institute for Muscle Research, University Hospital Bergmannsheil, Ruhr-University Bochum, Bochum, Germany; Department of Neurology and Clinical Neurophysiology (R.A.K.), St. Marien-Hospital Borken, Borken, Germany; Department of Molecular Cell Biology (Y.L., Z.O., P.F.M.V., D.O.F.), Institute for Cell Biology, University of Bonn, Bonn, Germany; Department of Neurology (B.S.), DKD HELIOS Klinik Wiesbaden, Wiesbaden, Germany; Department of Structural and Computational Biology (J.K., A.O., K.D.-C.), Max Perutz Laboratories, University of Vienna, Vienna, Austria; Medizinisches Proteom-Center (B.E., K.M.), Ruhr-University Bochum, Bochum, Germany; Institute of Human Genetics (W.K.), University of Würzburg, Würzburg, Germany; and Department of Biochemistry (K.D.-C.), Faculty of Chemistry and Chemical Technology, University of Ljubljana, Ljubljana, Slovenia
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11
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Muranova LK, Shatov VM, Bukach OV, Gusev NB. Cardio-Vascular Heat Shock Protein (cvHsp, HspB7), an Unusual Representative of Small Heat Shock Protein Family. BIOCHEMISTRY (MOSCOW) 2021; 86:S1-S11. [PMID: 33827396 DOI: 10.1134/s0006297921140017] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
HspB7 is one of ten human small heat shock proteins. This protein is expressed only in insulin-dependent tissues (heart, skeletal muscle, and fat tissue), and expression of HspB7 is regulated by many different factors. Single nucleotide polymorphism is characteristic for the HspB7 gene and this polymorphism correlates with cardio-vascular diseases and obesity. HspB7 has an unusual N-terminal sequence, a conservative α-crystallin domain, and very short C-terminal domain lacking conservative IPV tripeptide involved in a small heat shock proteins oligomer formation. Nevertheless, in the isolated state HspB7 forms both small oligomers (probably dimers) and very large oligomers (aggregates). HspB7 is ineffective in suppression of amorphous aggregation of model proteins induced by heating or reduction of disulfide bonds, however it is very effective in prevention of aggregation of huntingtin fragments enriched with Gln residues. HspB7 can be an effective sensor of electrophilic agents. This protein interacts with the contractile and cytoskeleton proteins (filamin C, titin, and actin) and participates in protection of the contractile apparatus and cytoskeleton from different adverse conditions. HspB7 possesses tumor suppressive activity. Further investigations are required to understand molecular mechanisms of HspB7 participation in numerous biological processes.
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Affiliation(s)
- Lydia K Muranova
- Faculty of Biology, Lomonosov Moscow State University, Moscow, 119991, Russia
| | - Vladislav M Shatov
- Faculty of Biology, Lomonosov Moscow State University, Moscow, 119991, Russia
| | - Olesya V Bukach
- Faculty of Biology, Lomonosov Moscow State University, Moscow, 119991, Russia
| | - Nikolai B Gusev
- Faculty of Biology, Lomonosov Moscow State University, Moscow, 119991, Russia.
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12
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The Role of Z-disc Proteins in Myopathy and Cardiomyopathy. Int J Mol Sci 2021; 22:ijms22063058. [PMID: 33802723 PMCID: PMC8002584 DOI: 10.3390/ijms22063058] [Citation(s) in RCA: 28] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2021] [Revised: 03/07/2021] [Accepted: 03/11/2021] [Indexed: 12/11/2022] Open
Abstract
The Z-disc acts as a protein-rich structure to tether thin filament in the contractile units, the sarcomeres, of striated muscle cells. Proteins found in the Z-disc are integral for maintaining the architecture of the sarcomere. They also enable it to function as a (bio-mechanical) signalling hub. Numerous proteins interact in the Z-disc to facilitate force transduction and intracellular signalling in both cardiac and skeletal muscle. This review will focus on six key Z-disc proteins: α-actinin 2, filamin C, myopalladin, myotilin, telethonin and Z-disc alternatively spliced PDZ-motif (ZASP), which have all been linked to myopathies and cardiomyopathies. We will summarise pathogenic variants identified in the six genes coding for these proteins and look at their involvement in myopathy and cardiomyopathy. Listing the Minor Allele Frequency (MAF) of these variants in the Genome Aggregation Database (GnomAD) version 3.1 will help to critically re-evaluate pathogenicity based on variant frequency in normal population cohorts.
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13
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Schänzer A, Schumann E, Zengeler D, Gulatz L, Maroli G, Ahting U, Sprengel A, Gräf S, Hahn A, Jux C, Acker T, Fürst DO, Rupp S, Schuld J, van der Ven PFM. The p.Ala2430Val mutation in filamin C causes a "hypertrophic myofibrillar cardiomyopathy". J Muscle Res Cell Motil 2021; 42:381-397. [PMID: 33710525 DOI: 10.1007/s10974-021-09601-1] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2020] [Accepted: 02/26/2021] [Indexed: 10/21/2022]
Abstract
Hypertrophic cardiomyopathy (HCM) often leads to heart failure. Mutations in sarcomeric proteins are most frequently the cause of HCM but in many patients the gene defect is not known. Here we report on a young man who was diagnosed with HCM shortly after birth. Whole exome sequencing revealed a mutation in the FLNC gene (c.7289C > T; p.Ala2430Val) that was previously shown to cause aggregation of the mutant protein in transfected cells. Myocardial tissue from patients with this mutation has not been analyzed before and thus, the underlying etiology is not well understood. Myocardial tissue of our patient obtained during myectomy at the age of 23 years was analyzed in detail by histochemistry, immunofluorescence staining, electron microscopy and western blot analysis. Cardiac histology showed a pathology typical for myofibrillar myopathy with myofibril disarray and abnormal protein aggregates containing BAG3, desmin, HSPB5 and filamin C. Analysis of sarcomeric and intercalated disc proteins showed focally reduced expression of the gap junction protein connexin43 and Xin-positive sarcomeric lesions in the cardiomyocytes of our patient. In addition, autophagy pathways were altered with upregulation of LC3-II, WIPI1 and HSPB5, 6, 7 and 8. We conclude that the p.Ala2430Val mutation in FLNC most probably is associated with HCM characterized by abnormal intercalated discs, disarray of myofibrils and aggregates containing Z-disc proteins similar to myofibrillar myopathy, which supports the pathological effect of the mutation.
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Affiliation(s)
- Anne Schänzer
- Institute of Neuropathology, Justus Liebig University, Arndstr.16, 35392, Giessen, Germany.
| | - Elisabeth Schumann
- Institute of Neuropathology, Justus Liebig University, Arndstr.16, 35392, Giessen, Germany
| | - Diana Zengeler
- Center for Genomics and Transcriptomics (CeGat) GmbH, Tübingen, Germany
| | - Lisann Gulatz
- Institute of Neuropathology, Justus Liebig University, Arndstr.16, 35392, Giessen, Germany
| | - Giovanni Maroli
- Department of Cardiac Development and Remodeling, Max Planck Institute for Heart and Lung Research, Bad Nauheim, Germany
| | - Uwe Ahting
- Institute of Human Genetics, Technical University of Munich (TUM), Munich, Germany
| | - Anke Sprengel
- Pediatric Heart Center, Justus Liebig University, Giessen, Germany
| | - Sabine Gräf
- Institute of Neuropathology, Justus Liebig University, Arndstr.16, 35392, Giessen, Germany
| | - Andreas Hahn
- Department of Child Neurology, Justus Liebig University, Giessen, Germany
| | - Christian Jux
- Pediatric Heart Center, Justus Liebig University, Giessen, Germany
| | - Till Acker
- Institute of Neuropathology, Justus Liebig University, Arndstr.16, 35392, Giessen, Germany
| | - Dieter O Fürst
- Department of Molecular Cell Biology, Institute for Cell Biology, University of Bonn, Bonn, Germany
| | - Stefan Rupp
- Pediatric Heart Center, Justus Liebig University, Giessen, Germany
| | - Julia Schuld
- Department of Molecular Cell Biology, Institute for Cell Biology, University of Bonn, Bonn, Germany
| | - Peter F M van der Ven
- Department of Molecular Cell Biology, Institute for Cell Biology, University of Bonn, Bonn, Germany
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14
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Kim M, Franke V, Brandt B, Lowenstein ED, Schöwel V, Spuler S, Akalin A, Birchmeier C. Single-nucleus transcriptomics reveals functional compartmentalization in syncytial skeletal muscle cells. Nat Commun 2020; 11:6375. [PMID: 33311457 PMCID: PMC7732842 DOI: 10.1038/s41467-020-20064-9] [Citation(s) in RCA: 99] [Impact Index Per Article: 24.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2020] [Accepted: 11/09/2020] [Indexed: 11/25/2022] Open
Abstract
Syncytial skeletal muscle cells contain hundreds of nuclei in a shared cytoplasm. We investigated nuclear heterogeneity and transcriptional dynamics in the uninjured and regenerating muscle using single-nucleus RNA-sequencing (snRNAseq) of isolated nuclei from muscle fibers. This revealed distinct nuclear subtypes unrelated to fiber type diversity, previously unknown subtypes as well as the expected ones at the neuromuscular and myotendinous junctions. In fibers of the Mdx dystrophy mouse model, distinct subtypes emerged, among them nuclei expressing a repair signature that were also abundant in the muscle of dystrophy patients, and a nuclear population associated with necrotic fibers. Finally, modifications of our approach revealed the compartmentalization in the rare and specialized muscle spindle. Our data identifies nuclear compartments of the myofiber and defines a molecular roadmap for their functional analyses; the data can be freely explored on the MyoExplorer server ( https://shiny.mdc-berlin.de/MyoExplorer/ ).
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Affiliation(s)
- Minchul Kim
- Developmental Biology/Signal Transduction, Max Delbrueck Center for Molecular Medicine, Berlin, Germany
| | - Vedran Franke
- Berlin Institute for Medical Systems Biology, Max Delbrueck Center for Molecular Medicine, Berlin, Germany
| | - Bettina Brandt
- Developmental Biology/Signal Transduction, Max Delbrueck Center for Molecular Medicine, Berlin, Germany
| | - Elijah D Lowenstein
- Developmental Biology/Signal Transduction, Max Delbrueck Center for Molecular Medicine, Berlin, Germany
| | - Verena Schöwel
- Muscle Research Unit, Experimental and Clinical Research Center, Charité Universitätsmedizin Berlin and Max Delbrueck Center for Molecular Medicine, Berlin, Germany
| | - Simone Spuler
- Muscle Research Unit, Experimental and Clinical Research Center, Charité Universitätsmedizin Berlin and Max Delbrueck Center for Molecular Medicine, Berlin, Germany
| | - Altuna Akalin
- Berlin Institute for Medical Systems Biology, Max Delbrueck Center for Molecular Medicine, Berlin, Germany.
| | - Carmen Birchmeier
- Developmental Biology/Signal Transduction, Max Delbrueck Center for Molecular Medicine, Berlin, Germany.
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15
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Knyazeva A, Khudiakov A, Vaz R, Muravyev A, Sukhareva K, Sejersen T, Kostareva A. FLNC Expression Level Influences the Activity of TEAD-YAP/TAZ Signaling. Genes (Basel) 2020; 11:genes11111343. [PMID: 33202721 PMCID: PMC7696573 DOI: 10.3390/genes11111343] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2020] [Revised: 11/09/2020] [Accepted: 11/11/2020] [Indexed: 02/07/2023] Open
Abstract
Filamin C (FLNC), being one of the major actin-binding proteins, is involved in the maintenance of key muscle cell functions. Inherited skeletal muscle and cardiac disorders linked to genetic variants in FLNC have attracted attention because of their high clinical importance and possibility of genotype-phenotype correlations. To further expand on the role of FLNC in muscle cells, we focused on detailed alterations of muscle cell properties developed after the loss of FLNC. Using the CRISPR/Cas9 method we generated a C2C12 murine myoblast cell line with stably suppressed Flnc expression. FLNC-deficient myoblasts have a significantly higher proliferation rate combined with an impaired cell migration capacity. The suppression of Flnc expression leads to inability to complete myogenic differentiation, diminished expression of Myh1 and Myh4, alteration of transcriptional dynamics of myogenic factors, such as Mymk and Myog, and deregulation of Hippo signaling pathway. Specifically, we identified elevated basal levels of Hippo activity in myoblasts with loss of FLNC, and ineffective reduction of Hippo signaling activity during myogenic differentiation. The latter was restored by Flnc overexpression. In summary, we confirmed the role of FLNC in muscle cell proliferation, migration and differentiation, and demonstrated for the first time the direct link between Flnc expression and activity of TEAD-YAP\TAZ signaling. These findings support a role of FLNC in regulation of essential muscle processes relying on mechanical as well as signaling mechanisms.
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Affiliation(s)
- Anastasia Knyazeva
- Almazov National Medical Research Centre, 197341 Saint-Petersburg, Russia; (A.K.); (A.M.); (K.S.); (A.K.)
- Correspondence:
| | - Aleksandr Khudiakov
- Almazov National Medical Research Centre, 197341 Saint-Petersburg, Russia; (A.K.); (A.M.); (K.S.); (A.K.)
| | - Raquel Vaz
- Department of Molecular Medicine and Surgery and Center for Molecular Medicine, Karolinska Institute, 171 76 Stockholm, Sweden;
| | - Aleksey Muravyev
- Almazov National Medical Research Centre, 197341 Saint-Petersburg, Russia; (A.K.); (A.M.); (K.S.); (A.K.)
| | - Ksenia Sukhareva
- Almazov National Medical Research Centre, 197341 Saint-Petersburg, Russia; (A.K.); (A.M.); (K.S.); (A.K.)
- Graduate School of Life and Health Science, University of Verona, 10 37134 Verona, Italy
| | - Thomas Sejersen
- Department of Women’s and Children’s Health, Karolinska Institute, 171 77 Stockholm, Sweden;
| | - Anna Kostareva
- Almazov National Medical Research Centre, 197341 Saint-Petersburg, Russia; (A.K.); (A.M.); (K.S.); (A.K.)
- Department of Women’s and Children’s Health, Karolinska Institute, 171 77 Stockholm, Sweden;
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16
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Qu Z, Liu C, Li P, Xiong W, Zeng Z, Liu A, Xiao W, Huang J, Liu Z, Zhang S. Theaflavin Promotes Myogenic Differentiation by Regulating the Cell Cycle and Surface Mechanical Properties of C2C12 Cells. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2020; 68:9978-9992. [PMID: 32830510 DOI: 10.1021/acs.jafc.0c03744] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Aging and muscle diseases often lead to a decline in the differentiation capacity of myoblasts, which in turn results in the deterioration of skeletal muscle (SkM) function and impairment of regeneration ability after injury. Theaflavins, the "gold molecules" found in black tea, have been reported to possess various biological activities and have a positive effect on maintaining human health. In this study, we found that among the four theaflavins (theaflavin (TF1), theaflavin-3-gallate (TF2A), theaflavin-3'-gallate (TF2B), and theaflavin-3,3'-digallate (TF3) monomers), TF1 (20 μM) significantly promoted the fusion index of myoblasts, number of mature myotubes, and degree of myotube development. By combining transcriptomics, bioinformatics, and molecular biology experiments, we showed that TF1 may promote myoblast differentiation by (1) regulating the withdrawal of myoblasts from the cell cycle, inducing the release of myogenic factors (MyoD, MyoG, and MyHC) and accelerating myogenic differentiation and (2) regulating the adhesion force of myoblasts and mechanical properties of mature myotubes and promoting the migration, fusion, and development of myoblasts. In conclusion, our study outcomes show that TF1 can promote myoblast differentiation and regulate myotube mechanical properties. It is a potential dietary supplement for the elderly. Our findings provide a new scientific basis for the relationship between tea drinking and aging.
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Affiliation(s)
- Zhihao Qu
- Key Laboratory of Tea Science of Ministry of Education, Hunan Agricultural University, Changsha, Hunan 410128, China
- National Research Center of Engineering Technology for Utilization of Functional Ingredients from Botanicals, Collaborative Innovation Centre of Utilization of Functional Ingredients from Botanicals, Hunan Agricultural University, Changsha, Hunan 410128, China
| | - Changwei Liu
- Key Laboratory of Tea Science of Ministry of Education, Hunan Agricultural University, Changsha, Hunan 410128, China
- National Research Center of Engineering Technology for Utilization of Functional Ingredients from Botanicals, Collaborative Innovation Centre of Utilization of Functional Ingredients from Botanicals, Hunan Agricultural University, Changsha, Hunan 410128, China
| | - Penghui Li
- School of Life Sciences, Fudan University, Shanghai 200433, China
| | - Wei Xiong
- The Key Laboratory of Carcinogenesis and Cancer Invasion of the Chinese Ministry of Education, Cancer Research Institute, Central South University, Changsha, Hunan 410008, China
| | - Zhaoyang Zeng
- The Key Laboratory of Carcinogenesis and Cancer Invasion of the Chinese Ministry of Education, Cancer Research Institute, Central South University, Changsha, Hunan 410008, China
| | - Ailing Liu
- College of Bioscience and Biotechnology, Hunan Agricultural University, Changsha, Hunan 410128, China
| | - Wenjun Xiao
- Key Laboratory of Tea Science of Ministry of Education, Hunan Agricultural University, Changsha, Hunan 410128, China
- National Research Center of Engineering Technology for Utilization of Functional Ingredients from Botanicals, Collaborative Innovation Centre of Utilization of Functional Ingredients from Botanicals, Hunan Agricultural University, Changsha, Hunan 410128, China
| | - Jianan Huang
- Key Laboratory of Tea Science of Ministry of Education, Hunan Agricultural University, Changsha, Hunan 410128, China
- National Research Center of Engineering Technology for Utilization of Functional Ingredients from Botanicals, Collaborative Innovation Centre of Utilization of Functional Ingredients from Botanicals, Hunan Agricultural University, Changsha, Hunan 410128, China
| | - Zhonghua Liu
- Key Laboratory of Tea Science of Ministry of Education, Hunan Agricultural University, Changsha, Hunan 410128, China
- National Research Center of Engineering Technology for Utilization of Functional Ingredients from Botanicals, Collaborative Innovation Centre of Utilization of Functional Ingredients from Botanicals, Hunan Agricultural University, Changsha, Hunan 410128, China
| | - Sheng Zhang
- Key Laboratory of Tea Science of Ministry of Education, Hunan Agricultural University, Changsha, Hunan 410128, China
- National Research Center of Engineering Technology for Utilization of Functional Ingredients from Botanicals, Collaborative Innovation Centre of Utilization of Functional Ingredients from Botanicals, Hunan Agricultural University, Changsha, Hunan 410128, China
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17
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Schuld J, Orfanos Z, Chevessier F, Eggers B, Heil L, Uszkoreit J, Unger A, Kirfel G, van der Ven PFM, Marcus K, Linke WA, Clemen CS, Schröder R, Fürst DO. Homozygous expression of the myofibrillar myopathy-associated p.W2710X filamin C variant reveals major pathomechanisms of sarcomeric lesion formation. Acta Neuropathol Commun 2020; 8:154. [PMID: 32887649 PMCID: PMC7650280 DOI: 10.1186/s40478-020-01001-9] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2020] [Accepted: 07/22/2020] [Indexed: 01/06/2023] Open
Abstract
Filamin C (FLNc) is mainly expressed in striated muscle cells where it localizes to Z-discs, myotendinous junctions and intercalated discs. Recent studies have revealed numerous mutations in the FLNC gene causing familial and sporadic myopathies and cardiomyopathies with marked clinical variability. The most frequent myopathic mutation, p.W2710X, which is associated with myofibrillar myopathy, deletes the carboxy-terminal 16 amino acids from FLNc and abolishes the dimerization property of Ig-like domain 24. We previously characterized "knock-in" mice heterozygous for this mutation (p.W2711X), and have now investigated homozygous mice using protein and mRNA expression analyses, mass spectrometry, and extensive immunolocalization and ultrastructural studies. Although the latter mice display a relatively mild myopathy under normal conditions, our analyses identified major mechanisms causing the pathophysiology of this disease: in comparison to wildtype animals (i) the expression level of FLNc protein is drastically reduced; (ii) mutant FLNc is relocalized from Z-discs to particularly mechanically strained parts of muscle cells, i.e. myotendinous junctions and myofibrillar lesions; (iii) the number of lesions is greatly increased and these lesions lack Bcl2-associated athanogene 3 (BAG3) protein; (iv) the expression of heat shock protein beta-7 (HSPB7) is almost completely abolished. These findings indicate grave disturbances of BAG3-dependent and -independent autophagy pathways that are required for efficient lesion repair. In addition, our studies reveal general mechanisms of lesion formation and demonstrate that defective FLNc dimerization via its carboxy-terminal domain does not disturb assembly and basic function of myofibrils. An alternative, more amino-terminally located dimerization site might compensate for that loss. Since filamins function as stress sensors, our data further substantiate that FLNc is important for mechanosensing in the context of Z-disc stabilization and maintenance.
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18
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Collier MP, Benesch JLP. Small heat-shock proteins and their role in mechanical stress. Cell Stress Chaperones 2020; 25:601-613. [PMID: 32253742 PMCID: PMC7332611 DOI: 10.1007/s12192-020-01095-z] [Citation(s) in RCA: 24] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 03/12/2020] [Indexed: 12/13/2022] Open
Abstract
The ability of cells to respond to stress is central to health. Stress can damage folded proteins, which are vulnerable to even minor changes in cellular conditions. To maintain proteostasis, cells have developed an intricate network in which molecular chaperones are key players. The small heat-shock proteins (sHSPs) are a widespread family of molecular chaperones, and some sHSPs are prominent in muscle, where cells and proteins must withstand high levels of applied force. sHSPs have long been thought to act as general interceptors of protein aggregation. However, evidence is accumulating that points to a more specific role for sHSPs in protecting proteins from mechanical stress. Here, we briefly introduce the sHSPs and outline the evidence for their role in responses to mechanical stress. We suggest that sHSPs interact with mechanosensitive proteins to regulate physiological extension and contraction cycles. It is likely that further study of these interactions - enabled by the development of experimental methodologies that allow protein contacts to be studied under the application of mechanical force - will expand our understanding of the activity and functions of sHSPs, and of the roles played by chaperones in general.
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Affiliation(s)
- Miranda P Collier
- Department of Biology, Stanford University, 318 Campus Drive, Stanford, CA, 94305, USA
| | - Justin L P Benesch
- Department of Chemistry, Chemistry Research Laboratory, University of Oxford, Mansfield Road, Oxford, OX1 3TA, UK.
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19
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Structure and Function of Filamin C in the Muscle Z-Disc. Int J Mol Sci 2020; 21:ijms21082696. [PMID: 32295012 PMCID: PMC7216277 DOI: 10.3390/ijms21082696] [Citation(s) in RCA: 47] [Impact Index Per Article: 11.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2020] [Revised: 04/08/2020] [Accepted: 04/09/2020] [Indexed: 12/22/2022] Open
Abstract
Filamin C (FLNC) is one of three filamin proteins (Filamin A (FLNA), Filamin B (FLNB), and FLNC) that cross-link actin filaments and interact with numerous binding partners. FLNC consists of a N-terminal actin-binding domain followed by 24 immunoglobulin-like repeats with two intervening calpain-sensitive hinges separating R15 and R16 (hinge 1) and R23 and R24 (hinge-2). The FLNC subunit is dimerized through R24 and calpain cleaves off the dimerization domain to regulate mobility of the FLNC subunit. FLNC is localized in the Z-disc due to the unique insertion of 82 amino acid residues in repeat 20 and necessary for normal Z-disc formation that connect sarcomeres. Since phosphorylation of FLNC by PKC diminishes the calpain sensitivity, assembly, and disassembly of the Z-disc may be regulated by phosphorylation of FLNC. Mutations of FLNC result in cardiomyopathy and muscle weakness. Although this review will focus on the current understanding of FLNC structure and functions in muscle, we will also discuss other filamins because they share high sequence similarity and are better characterized. We will also discuss a possible role of FLNC as a mechanosensor during muscle contraction.
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20
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Kim J, Aydemir TB, Jimenez-Rondan FR, Ruggiero CH, Kim MH, Cousins RJ. Deletion of metal transporter Zip14 (Slc39a14) produces skeletal muscle wasting, endotoxemia, Mef2c activation and induction of miR-675 and Hspb7. Sci Rep 2020; 10:4050. [PMID: 32132660 PMCID: PMC7055249 DOI: 10.1038/s41598-020-61059-2] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2019] [Accepted: 02/18/2020] [Indexed: 02/07/2023] Open
Abstract
Skeletal muscle represents the largest pool of body zinc, however, little is known about muscle zinc homeostasis or muscle-specific zinc functions. Zip14 (Slc39a14) was the most highly expressed zinc transporter in skeletal muscle of mice in response to LPS-induced inflammation. We compared metabolic parameters of skeletal muscle from global Zip14 knockout (KO) and wild-type mice (WT). At basal steady state Zip14 KO mice exhibited a phenotype that included muscle wasting and metabolic endotoxemia. Microarray and qPCR analysis of gastrocnemius muscle RNA revealed that ablation of Zip14 produced increased muscle p-Mef2c, Hspb7 and miR-675-5p expression and increased p38 activation. ChIP assays showed enhanced binding of NF-[Formula: see text] to the Mef2c promoter. In contrast, LPS-induced systemic inflammation enhanced Zip14-dependent zinc uptake by muscle, increased expression of Atrogin1 and MuRF1 and markedly reduced MyoD. These signatures of muscle atrophy and cachexia were not influenced by Zip14 ablation, however. LPS-induced miR-675-3p and -5p expression was Zip14-dependent. Collectively, these results with an integrative model are consistent with a Zip14 function in skeletal muscle at steady state that supports myogenesis through suppression of metabolic endotoxemia and that Zip14 ablation coincides with sustained activity of phosphorylated components of signaling pathways including p-Mef2c, which causes Hspb7-dependent muscle wasting.
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Affiliation(s)
- Jinhee Kim
- Food Science and Human Nutrition Department, Center for Nutritional Sciences, College of Agricultural and Life Sciences, University of Florida, Gainesville, FL, 32611, USA
- Rutgers Medical School, Newark, NJ, USA
| | - Tolunay Beker Aydemir
- Food Science and Human Nutrition Department, Center for Nutritional Sciences, College of Agricultural and Life Sciences, University of Florida, Gainesville, FL, 32611, USA
- Cornell University, Ithaca, NY, USA
| | - Felix R Jimenez-Rondan
- Food Science and Human Nutrition Department, Center for Nutritional Sciences, College of Agricultural and Life Sciences, University of Florida, Gainesville, FL, 32611, USA
| | - Courtney H Ruggiero
- Food Science and Human Nutrition Department, Center for Nutritional Sciences, College of Agricultural and Life Sciences, University of Florida, Gainesville, FL, 32611, USA
| | - Min-Hyun Kim
- Food Science and Human Nutrition Department, Center for Nutritional Sciences, College of Agricultural and Life Sciences, University of Florida, Gainesville, FL, 32611, USA
- University of Michigan, Ann Arbor, MI, USA
| | - Robert J Cousins
- Food Science and Human Nutrition Department, Center for Nutritional Sciences, College of Agricultural and Life Sciences, University of Florida, Gainesville, FL, 32611, USA.
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21
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Widespread remodeling of proteome solubility in response to different protein homeostasis stresses. Proc Natl Acad Sci U S A 2020; 117:2422-2431. [PMID: 31964829 DOI: 10.1073/pnas.1912897117] [Citation(s) in RCA: 32] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022] Open
Abstract
The accumulation of protein deposits in neurodegenerative diseases has been hypothesized to depend on a metastable subproteome vulnerable to aggregation. To investigate this phenomenon and the mechanisms that regulate it, we measured the solubility of the proteome in the mouse Neuro2a cell line under six different protein homeostasis stresses: 1) Huntington's disease proteotoxicity, 2) Hsp70, 3) Hsp90, 4) proteasome, 5) endoplasmic reticulum (ER)-mediated folding inhibition, and 6) oxidative stress. Overall, we found that about one-fifth of the proteome changed solubility with almost all of the increases in insolubility were counteracted by increases in solubility of other proteins. Each stress directed a highly specific pattern of change, which reflected the remodeling of protein complexes involved in adaptation to perturbation, most notably, stress granule (SG) proteins, which responded differently to different stresses. These results indicate that the protein homeostasis system is organized in a modular manner and aggregation patterns were not correlated with protein folding stability (ΔG). Instead, distinct cellular mechanisms regulate assembly patterns of multiple classes of protein complexes under different stress conditions.
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22
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Srikanth K, Kumar H, Park W, Byun M, Lim D, Kemp S, Te Pas MFW, Kim JM, Park JE. Cardiac and Skeletal Muscle Transcriptome Response to Heat Stress in Kenyan Chicken Ecotypes Adapted to Low and High Altitudes Reveal Differences in Thermal Tolerance and Stress Response. Front Genet 2019; 10:993. [PMID: 31681427 PMCID: PMC6798392 DOI: 10.3389/fgene.2019.00993] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2019] [Accepted: 09/18/2019] [Indexed: 12/30/2022] Open
Abstract
Heat stress (HS) negatively affects chicken performance. Agricultural expansion will happen in regions that experience high ambient temperatures, where fast-growing commercial chickens are vulnerable. Indigenous chickens of such regions, due to generations of exposure to environmental challenges, might have higher thermal tolerance. In this study, two indigenous chicken ecotypes, from the hot and humid Mombasa (lowland) and the colder Naivasha (highland) regions, were used to investigate the effects of acute (5 h, 35°C) and chronic (3 days of 35°C for 8 h/day) HS on the cardiac and skeletal muscle, through RNA sequencing. The rectal temperature gain and the number of differentially expressed genes (DEGs) [False Discovery Rate (FDR) < 0.05] were two times higher in the acute stage than in the chronic stage in both ecotypes, suggesting that cyclic exposure to HS can lead to adaptation. A tissue- and stage-specific difference in response to HS was observed, with peroxisome proliferator-activated-receptor (PPAR) signaling and mitogen-activate protein kinase (MAPK) signaling pathways, enriched in heart and skeletal muscle, respectively, and the p53 pathway enriched only in the acute stage in both tissues. The acute and chronic stage DEGs were integrated by a region-specific gene coexpression network (GCN), and genes with the highest number of connections (hub genes) were identified. The hub genes in the lowland network were CCNB2, Crb2, CHST9, SESN1, and NR4A3, while COMMD4, TTC32, H1F0, ACYP1, and RPS28 were the hub genes in the highland network. Pathway analysis of genes in the GCN showed that p53 and PPAR signaling pathways were enriched in both low and highland networks, while MAPK signaling and protein processing in endoplasmic reticulum were enriched only in the gene network of highland chickens. This shows that to dissipate the accumulated heat, to reduce heat induced apoptosis, and to promote DNA damage repair, the ecotypes activated or suppressed different genes, indicating the differences in thermal tolerance and HS response mechanisms between the ecotypes. This study provides information on the HS response of chickens, adapted to two different agro climatic environments, extending our understanding of the mechanisms of HS response and the effect of adaptation in counteracting HS.
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Affiliation(s)
- Krishnamoorthy Srikanth
- Animal Genomics and Bioinformatics Division, National Institute of Animal Science, RDA, Wanju, South Korea
| | - Himansu Kumar
- Animal Genomics and Bioinformatics Division, National Institute of Animal Science, RDA, Wanju, South Korea
| | - Woncheoul Park
- Animal Genomics and Bioinformatics Division, National Institute of Animal Science, RDA, Wanju, South Korea
| | - Mijeong Byun
- Animal Genomics and Bioinformatics Division, National Institute of Animal Science, RDA, Wanju, South Korea
| | - Dajeong Lim
- Animal Genomics and Bioinformatics Division, National Institute of Animal Science, RDA, Wanju, South Korea
| | - Steve Kemp
- Animal Biosciences, International Livestock Research Institute (ILRI), Nairobi, Kenya
| | - Marinus F W Te Pas
- Wageningen UR Livestock Research, Animal Breeding and Genomics, Wageningen, Netherlands
| | - Jun-Mo Kim
- Department of Animal Science and Technology, Chung-Ang University, Anseong, South Korea
| | - Jong-Eun Park
- Animal Genomics and Bioinformatics Division, National Institute of Animal Science, RDA, Wanju, South Korea
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23
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Baldin AV, Zamyatnin AA, Bazhin AV, Xu WH, Savvateeva LV. Advances in the Development of Anticancer HSP-based Vaccines. Curr Med Chem 2019; 26:427-445. [PMID: 29376489 DOI: 10.2174/0929867325666180129100015] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2017] [Revised: 10/11/2017] [Accepted: 01/01/2018] [Indexed: 01/01/2023]
Abstract
Current advances in cancer treatment are based on the recent discoveries of molecular mechanisms of tumour maintenance. It was shown that heat shock proteins (HSPs) play a crucial role in the development of immune response against tumours. Thus, HSPs represent multifunctional agents not only with chaperone functions, but also possessing immunomodulatory properties. These properties are exploited for the development of HSP-based anticancer vaccines aimed to induce cytotoxic responses against tumours. To date, a number of strategies have been suggested to facilitate HSP-based vaccine production and to increase its effectiveness. The present review focuses on the current trend for the development of HSPbased vaccines aimed at inducing strong immunological tumour-specific responses against cancer cells of distinct etiology and localization.
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Affiliation(s)
- Alexey V Baldin
- Sechenov First Moscow State Medical University, Institute of Molecular Medicine, 119991, Moscow, Russian Federation
| | - Andrey A Zamyatnin
- Sechenov First Moscow State Medical University, Institute of Molecular Medicine, 119991, Moscow, Russian Federation.,Lomonosov Moscow State University, Department of Cell Signaling, Belozersky Institute of Physico- Chemical Biology, 119991, Moscow, Russian Federation
| | - Alexandr V Bazhin
- Department of General, Visceral, and Transplant Surgery, Ludwig-Maximilians-University Munich, Germany.,German Cancer Consortium (DKTK), Partner Site Munich, Germany
| | - Wan-Hai Xu
- Department of Urology, the Fourth Hospital of Harbin Medical University, Harbin, China
| | - Lyudmila V Savvateeva
- Sechenov First Moscow State Medical University, Institute of Molecular Medicine, 119991, Moscow, Russian Federation
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24
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The early response of αB-crystallin to a single bout of aerobic exercise in mouse skeletal muscles depends upon fiber oxidative features. Redox Biol 2019; 24:101183. [PMID: 30974319 PMCID: PMC6454247 DOI: 10.1016/j.redox.2019.101183] [Citation(s) in RCA: 25] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2019] [Revised: 03/21/2019] [Accepted: 03/28/2019] [Indexed: 12/19/2022] Open
Abstract
Besides its substantial role in eye lens, αB-crystallin (HSPB5) retains fundamental function in striated muscle during physiological or pathological modifications. In this study, we aimed to analyse the cellular and molecular factors driving the functional response of HSPB5 protein in different muscles from mice subjected to an acute bout of non-damaging endurance exercise or in C2C12 myocytes upon exposure to pro-oxidant environment, chosen as “in vivo” and “in vitro” models of a physiological stressing conditions, respectively. To this end, red (GR) and white gastrocnemius (GW), as sources of slow-oxidative and fast-glycolytic/oxidative fibers, as well as the soleus (SOL), mainly composed of slow-oxidative type fibers, were obtained from BALB/c mice, before (CTRL) and at different times (0′, 15′, 30′ 120′) following 1-h of running. Although the total level of HSPB5 protein was not affected by exercise, we found a significantly increase of phosphorylated HSPB5 (p-HSPB5) only in GR and SOL skeletal muscle with a higher amount of type I and IIA/X myofibers. The fiber-specific activation of HSPB5 was correlated to its interaction with the actin filaments, as well as to an increased level of lipid peroxidation and carbonylated proteins. The role of the pro-oxidant environment in HSPB5 response was investigated in terminally differentiated C2C12 myotubes, where most of HSPB5/pHSPB5 pool was present in the cytosolic compartment in standard culture conditions. As a result of exposure to pro-oxidizing, but not cytotoxic, H2O2 concentration, the p-38MAPK-mediated phosphorylation of HSPB5 resulted functional to promote its interaction with the myofibrillar components, such as β-actin, desmin and filamin 1. This study provides novel information on the molecular pathway underlying the HSPB5 physiological function in skeletal muscle, confirming the contribution of the pro-oxidant environment in HSPB5 activation and interaction with substrate/client myofibrillar proteins, offering new insights for the study of myofibrillar myopathies and cardiomyopathies.
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25
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Valberg SJ, Perumbakkam S, McKenzie EC, Finno CJ. Proteome and transcriptome profiling of equine myofibrillar myopathy identifies diminished peroxiredoxin 6 and altered cysteine metabolic pathways. Physiol Genomics 2018; 50:1036-1050. [PMID: 30289745 PMCID: PMC6337024 DOI: 10.1152/physiolgenomics.00044.2018] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023] Open
Abstract
Equine myofibrillar myopathy (MFM) causes exertional muscle pain and is characterized by myofibrillar disarray and ectopic desmin aggregates of unknown origin. To investigate the pathophysiology of MFM, we compared resting and 3 h postexercise transcriptomes of gluteal muscle and the resting skeletal muscle proteome of MFM and control Arabian horses with RNA sequencing and isobaric tags for relative and absolute quantitation analyses. Three hours after exercise, 191 genes were identified as differentially expressed (DE) in MFM vs. control muscle with >1 log2 fold change (FC) in genes involved in sulfur compound/cysteine metabolism such as cystathionine-beta-synthase ( CBS, ↓4.51), a cysteine and neutral amino acid membrane transporter ( SLC7A10, ↓1.80 MFM), and a cationic transporter (SLC24A1, ↓1.11 MFM). In MFM vs. control at rest, 284 genes were DE with >1 log2 FC in pathways for structure morphogenesis, fiber organization, tissue development, and cell differentiation including > 1 log2 FC in cardiac alpha actin ( ACTC1 ↑2.5 MFM), cytoskeletal desmoplakin ( DSP ↑2.4 MFM), and basement membrane usherin ( USH2A ↓2.9 MFM). Proteome analysis revealed significantly lower antioxidant peroxiredoxin 6 content (PRDX6, ↓4.14 log2 FC MFM), higher fatty acid transport enzyme carnitine palmitoyl transferase (CPT1B, ↑3.49 MFM), and lower sarcomere protein tropomyosin (TPM2, ↓3.24 MFM) in MFM vs. control muscle at rest. We propose that in MFM horses, altered cysteine metabolism and a deficiency of cysteine-containing antioxidants combined with a high capacity to oxidize fatty acids and generate ROS during aerobic exercise causes chronic oxidation and aggregation of key proteins such as desmin.
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Affiliation(s)
- Stephanie J Valberg
- McPhail Equine Performance Center, Department of Large Animal Clinical Sciences, Michigan State University, East Lansing, Michigan.,Department of Population Sciences, University of Minnesota , St. Paul, Minnesota
| | - Sudeep Perumbakkam
- Department of Large Animal Clinical Sciences, Michigan State University , East Lansing, Michigan
| | - Erica C McKenzie
- Department of Clinical Sciences, Carlson College of Veterinary Medicine, Oregon State University , Corvallis, Oregon
| | - Carrie J Finno
- Department of Population Health and Reproduction, University of California Davis , Davis, California
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26
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Tayal U, Cook SA. Truncating Variants in Filamin C: The Challenges of Genotype-Phenotype Correlations in Cardiomyopathies. J Am Coll Cardiol 2018; 68:2452-2453. [PMID: 27908350 DOI: 10.1016/j.jacc.2016.05.105] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/04/2016] [Revised: 04/29/2016] [Accepted: 05/03/2016] [Indexed: 10/20/2022]
Affiliation(s)
- Upasana Tayal
- National Heart and Lung Institute, Imperial College, London, United Kingdom
| | - Stuart A Cook
- National Heart and Lung Institute, Imperial College, London, United Kingdom; National Heart Centre, Singapore, Singapore.
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27
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Mercer EJ, Lin YF, Cohen-Gould L, Evans T. Hspb7 is a cardioprotective chaperone facilitating sarcomeric proteostasis. Dev Biol 2018; 435:41-55. [PMID: 29331499 DOI: 10.1016/j.ydbio.2018.01.005] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2017] [Revised: 12/29/2017] [Accepted: 01/09/2018] [Indexed: 02/02/2023]
Abstract
Small heat shock proteins are chaperones with variable mechanisms of action. The function of cardiac family member Hspb7 is unknown, despite being identified through GWAS as a potential cardiomyopathy risk gene. We discovered that zebrafish hspb7 mutants display mild focal cardiac fibrosis and sarcomeric abnormalities. Significant mortality was observed in adult hspb7 mutants subjected to exercise stress, demonstrating a genetic and environmental interaction that determines disease outcome. We identified large sarcomeric proteins FilaminC and Titin as Hspb7 binding partners in cardiac cells. Damaged FilaminC undergoes autophagic processing to maintain sarcomeric homeostasis. Loss of Hspb7 in zebrafish or human cardiomyocytes stimulated autophagic pathways and expression of the sister gene encoding Hspb5. Inhibiting autophagy caused FilaminC aggregation in HSPB7 mutant human cardiomyocytes and developmental cardiomyopathy in hspb7 mutant zebrafish embryos. These studies highlight the importance of damage-processing networks in cardiomyocytes, and a previously unrecognized role in this context for Hspb7.
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Affiliation(s)
- Emily J Mercer
- Department of Surgery, Weill Cornell Medical College, United States
| | - Yi-Fan Lin
- Department of Surgery, Weill Cornell Medical College, United States
| | - Leona Cohen-Gould
- Department of Biochemistry, Weill Cornell Medical College, United States
| | - Todd Evans
- Department of Surgery, Weill Cornell Medical College, United States.
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28
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Ikwegbue PC, Masamba P, Oyinloye BE, Kappo AP. Roles of Heat Shock Proteins in Apoptosis, Oxidative Stress, Human Inflammatory Diseases, and Cancer. Pharmaceuticals (Basel) 2017; 11:E2. [PMID: 29295496 PMCID: PMC5874698 DOI: 10.3390/ph11010002] [Citation(s) in RCA: 161] [Impact Index Per Article: 23.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2017] [Revised: 11/14/2017] [Accepted: 11/17/2017] [Indexed: 12/12/2022] Open
Abstract
Heat shock proteins (HSPs) play cytoprotective activities under pathological conditions through the initiation of protein folding, repair, refolding of misfolded peptides, and possible degradation of irreparable proteins. Excessive apoptosis, resulting from increased reactive oxygen species (ROS) cellular levels and subsequent amplified inflammatory reactions, is well known in the pathogenesis and progression of several human inflammatory diseases (HIDs) and cancer. Under normal physiological conditions, ROS levels and inflammatory reactions are kept in check for the cellular benefits of fighting off infectious agents through antioxidant mechanisms; however, this balance can be disrupted under pathological conditions, thus leading to oxidative stress and massive cellular destruction. Therefore, it becomes apparent that the interplay between oxidant-apoptosis-inflammation is critical in the dysfunction of the antioxidant system and, most importantly, in the progression of HIDs. Hence, there is a need to maintain careful balance between the oxidant-antioxidant inflammatory status in the human body. HSPs are known to modulate the effects of inflammation cascades leading to the endogenous generation of ROS and intrinsic apoptosis through inhibition of pro-inflammatory factors, thereby playing crucial roles in the pathogenesis of HIDs and cancer. We propose that careful induction of HSPs in HIDs and cancer, especially prior to inflammation, will provide good therapeutics in the management and treatment of HIDs and cancer.
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Affiliation(s)
- Paul Chukwudi Ikwegbue
- Biotechnology and Structural Biochemistry (BSB) Group, Department of Biochemistry and Microbiology, University of Zululand, KwaDlangezwa 3886, South Africa.
| | - Priscilla Masamba
- Biotechnology and Structural Biochemistry (BSB) Group, Department of Biochemistry and Microbiology, University of Zululand, KwaDlangezwa 3886, South Africa.
| | - Babatunji Emmanuel Oyinloye
- Biotechnology and Structural Biochemistry (BSB) Group, Department of Biochemistry and Microbiology, University of Zululand, KwaDlangezwa 3886, South Africa.
- Department of Biochemistry, Afe Babalola University, PMB 5454, Ado-Ekiti 360001, Nigeria.
| | - Abidemi Paul Kappo
- Biotechnology and Structural Biochemistry (BSB) Group, Department of Biochemistry and Microbiology, University of Zululand, KwaDlangezwa 3886, South Africa.
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HSPB7 is indispensable for heart development by modulating actin filament assembly. Proc Natl Acad Sci U S A 2017; 114:11956-11961. [PMID: 29078393 DOI: 10.1073/pnas.1713763114] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022] Open
Abstract
Small heat shock protein HSPB7 is highly expressed in the heart. Several mutations within HSPB7 are associated with dilated cardiomyopathy and heart failure in human patients. However, the precise role of HSPB7 in the heart is still unclear. In this study, we generated global as well as cardiac-specific HSPB7 KO mouse models and found that loss of HSPB7 globally or specifically in cardiomyocytes resulted in embryonic lethality before embryonic day 12.5. Using biochemical and cell culture assays, we identified HSPB7 as an actin filament length regulator that repressed actin polymerization by binding to monomeric actin. Consistent with HSPB7's inhibitory effects on actin polymerization, HSPB7 KO mice had longer actin/thin filaments and developed abnormal actin filament bundles within sarcomeres that interconnected Z lines and were cross-linked by α-actinin. In addition, loss of HSPB7 resulted in up-regulation of Lmod2 expression and mislocalization of Tmod1. Furthermore, crossing HSPB7 null mice into an Lmod2 null background rescued the elongated thin filament phenotype of HSPB7 KOs, but double KO mice still exhibited formation of abnormal actin bundles and early embryonic lethality. These in vivo findings indicated that abnormal actin bundles, not elongated thin filament length, were the cause of embryonic lethality in HSPB7 KOs. Our findings showed an unsuspected and critical role for a specific small heat shock protein in directly modulating actin thin filament length in cardiac muscle by binding monomeric actin and limiting its availability for polymerization.
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30
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Liao WC, Juo LY, Shih YL, Chen YH, Yan YT. HSPB7 prevents cardiac conduction system defect through maintaining intercalated disc integrity. PLoS Genet 2017; 13:e1006984. [PMID: 28827800 PMCID: PMC5587339 DOI: 10.1371/journal.pgen.1006984] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2017] [Revised: 09/06/2017] [Accepted: 08/17/2017] [Indexed: 01/19/2023] Open
Abstract
HSPB7 is a member of the small heat-shock protein (HSPB) family and is expressed in the cardiomyocytes from cardiogenesis onwards. A dramatic increase in HSPB7 is detected in the heart and blood plasma immediately after myocardial infarction. Additionally, several single-nucleotide polymorphisms of HSPB7 have been identified to be associated with heart failure caused by cardiomyopathy in human patients. Although a recent study has shown that HSPB7 is required for maintaining myofiber structure in skeletal muscle, its molecular and physiological functions in the heart remain unclear. In the present study, we generated a cardiac-specific inducible HSPB7 knockout mouse and demonstrated that the loss of HSPB7 in cardiomyocytes results in rapid heart failure and sudden death. The electrocardiogram showed cardiac arrhythmia with abnormal conduction in the HSPB7 mutant mice before death. In HSPB7 CKO cardiomyocytes, no significant defect was detected in the organization of contractile proteins in sarcomeres, but a severe structural disruption was observed in the intercalated discs. The expression of connexin 43, a gap-junction protein located at the intercalated discs, was downregulated in HSPB7 knockout cardiomyocytes. Mislocalization of desmoplakin, and N-cadherin, the intercalated disc proteins, was also observed in the HSPB7 CKO hearts. Furthermore, filamin C, the interaction protein of HSPB7, was upregulated and aggregated in HSPB7 mutant cardiomyocytes. In conclusion, our findings characterize HSPB7 as an intercalated disc protein and suggest it has an essential role in maintaining intercalated disc integrity and conduction function in the adult heart. The intercalated disc is an indispensable structure that connects neighboring cardiomyocytes. It is also considered to be a single functional unit for cellular electric, mechanical, and signaling communication to maintain cardiomyocyte rigidity and synchrony. Mutation or defect in intercalated disc components usually results in distortions in the structure of intercalated discs and lethal cardiac abnormalities in patients. In this study, we found that the dynamic expression and subcellular location of HSPB7 are highly associated with intercalated disc component protein, N-cadherin, during the assembly and maturation of intercalated discs in cardiomyocytes. To identify the functional role of HSPB7 in the adult heart, we conducted a loss-of-function study of HSPB7 using a gene conditional knockout approach. We found that the loss of HSPB7 quickly results in the disruption of the intercalated disc structure, decreasing the expression of connexin 43 and mislocalization of N-cadherin and desmoplakin, and further inducing arrhythmic sudden death. In conclusion, our mouse model demonstrates that HSPB7 is required to maintain the structure and function of gap-junction complexes and intercalated discs, which has important implications for human heart disease.
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Affiliation(s)
- Wern-Chir Liao
- Institute of Biochemistry and Molecular Biology, National Yang-Ming University, Taipei, Taiwan
- Institute of Biomedical Science, Academia Sinica, Taipei, Taiwan
| | - Liang-Yi Juo
- Institute of Biochemistry and Molecular Biology, National Yang-Ming University, Taipei, Taiwan
- Institute of Biomedical Science, Academia Sinica, Taipei, Taiwan
| | - Yen-Ling Shih
- Institute of Biochemistry and Molecular Biology, National Yang-Ming University, Taipei, Taiwan
- Institute of Biomedical Science, Academia Sinica, Taipei, Taiwan
| | - Yen-Hui Chen
- Institute of Biomedical Science, Academia Sinica, Taipei, Taiwan
| | - Yu-Ting Yan
- Institute of Biochemistry and Molecular Biology, National Yang-Ming University, Taipei, Taiwan
- Institute of Biomedical Science, Academia Sinica, Taipei, Taiwan
- * E-mail:
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31
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Hu X, Van Marion DMS, Wiersma M, Zhang D, Brundel BJJM. The protective role of small heat shock proteins in cardiac diseases: key role in atrial fibrillation. Cell Stress Chaperones 2017; 22:665-674. [PMID: 28484965 PMCID: PMC5465041 DOI: 10.1007/s12192-017-0799-4] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2016] [Revised: 04/06/2017] [Accepted: 04/08/2017] [Indexed: 02/06/2023] Open
Abstract
Atrial fibrillation (AF) is the most common tachyarrhythmia which is associated with increased morbidity and mortality. AF usually progresses from a self-terminating paroxysmal to persistent disease. It has been recognized that AF progression is driven by structural remodeling of cardiomyocytes, which results in electrical and contractile dysfunction of the atria. We recently showed that structural remodeling is rooted in derailment of proteostasis, i.e., homeostasis of protein production, function, and degradation. Since heat shock proteins (HSPs) play an important role in maintaining a healthy proteostasis, the role of HSPs was investigated in AF. It was found that especially small heat shock protein (HSPB) levels get exhausted in atrial tissue of patients with persistent AF and that genetic or pharmacological induction of HSPB protects against cardiomyocyte remodeling in experimental models for AF. In this review, we provide an overview of HSPBs as a potential therapeutic target for normalizing proteostasis and suppressing the substrates for AF progression in experimental and clinical AF and discuss HSP activators as a promising therapy to prevent AF onset and progression.
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Affiliation(s)
- Xu Hu
- Department of Physiology, Institute for Cardiovascular Research, VU University Medical Center, De Boelelaan 1117, 1081 HV, Amsterdam, The Netherlands
| | - Denise M S Van Marion
- Department of Physiology, Institute for Cardiovascular Research, VU University Medical Center, De Boelelaan 1117, 1081 HV, Amsterdam, The Netherlands
| | - Marit Wiersma
- Department of Physiology, Institute for Cardiovascular Research, VU University Medical Center, De Boelelaan 1117, 1081 HV, Amsterdam, The Netherlands
| | - Deli Zhang
- Department of Physiology, Institute for Cardiovascular Research, VU University Medical Center, De Boelelaan 1117, 1081 HV, Amsterdam, The Netherlands
| | - Bianca J J M Brundel
- Department of Physiology, Institute for Cardiovascular Research, VU University Medical Center, De Boelelaan 1117, 1081 HV, Amsterdam, The Netherlands.
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32
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Janin A, N'Guyen K, Habib G, Dauphin C, Chanavat V, Bouvagnet P, Eschalier R, Streichenberger N, Chevalier P, Millat G. Truncating mutations on myofibrillar myopathies causing genes as prevalent molecular explanations on patients with dilated cardiomyopathy. Clin Genet 2017; 92:616-623. [PMID: 28436997 DOI: 10.1111/cge.13043] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2017] [Revised: 04/11/2017] [Accepted: 04/21/2017] [Indexed: 12/16/2022]
Abstract
Dilated cardiomyopathy (DCM) is one of the leading causes of heart failure with high morbidity and mortality. More than 40 genes have been reported to cause DCM. To provide new insights into the pathophysiology of dilated cardiomyopathy, a next-generation sequencing (NGS) workflow based on a panel of 48 cardiomyopathies-causing genes was used to analyze a cohort of 222 DCM patients. Truncating variants were detected on 63 unrelated DCM cases (28.4%). Most of them were identified, as expected, on TTN (29 DCM probands), but truncating variants were also identified on myofibrillar myopathies causing genes in 17 DCM patients (7.7% of the DCM cohort): 10 variations on FLNC and 7 variations on BAG3 . This study confirms that truncating variants on myofibrillar myopathies causing genes are frequently associated with dilated cardiomyopathies and also suggest that FLNC mutations could be considered as a common cause of dilated cardiomyopathy. Molecular approaches that would allow to detect systematically truncating variants in FLNC and BAG3 into genetic testing should significantly increase test sensitivity, thereby allowing earlier diagnosis and therapeutic intervention for many patients with dilated cardiomyopathy.
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Affiliation(s)
- A Janin
- Laboratoire de Cardiogénétique Moléculaire, Centre de Biologie et Pathologie Est, Hospices Civils de Lyon, Lyon, France.,NeuroMyoGen Institute, CNRS UMR 5310 - INSERM U1217, Université de Lyon 1, Lyon, France
| | - K N'Guyen
- Department of Medical Genetics, Timone Hospital, Marseille Teaching Hospital, Marseille, France
| | - G Habib
- Cardiology Department, Timone Hospital, Marseille, France
| | - C Dauphin
- Image Science for Interventional Techniques (ISIT), UMR6284, and CHU Clermont-Ferrand, Cardiology Department, Clermont Université, Université d'Auvergne, Cardio Vascular Interventional Therapy and Imaging (CaVITI), Clermont-Ferrand, France
| | - V Chanavat
- Laboratoire de Cardiogénétique Moléculaire, Centre de Biologie et Pathologie Est, Hospices Civils de Lyon, Lyon, France.,NeuroMyoGen Institute, CNRS UMR 5310 - INSERM U1217, Université de Lyon 1, Lyon, France
| | - P Bouvagnet
- NeuroMyoGen Institute, CNRS UMR 5310 - INSERM U1217, Université de Lyon 1, Lyon, France.,Groupe Hospitalier Est, Hospices Civils de Lyon, Service de Cardiologie C, Lyon, France
| | - R Eschalier
- Image Science for Interventional Techniques (ISIT), UMR6284, and CHU Clermont-Ferrand, Cardiology Department, Clermont Université, Université d'Auvergne, Cardio Vascular Interventional Therapy and Imaging (CaVITI), Clermont-Ferrand, France
| | - N Streichenberger
- NeuroMyoGen Institute, CNRS UMR 5310 - INSERM U1217, Université de Lyon 1, Lyon, France.,Laboratoire d'Anatomo-Cyto-Pathologie, Centre de Biologie et Pathologie Est, Hospices Civils de Lyon, Lyon, France
| | - P Chevalier
- Hôpital Cardiologique Louis-Pradel, Service de Rythmologie, Bron, France
| | - G Millat
- Laboratoire de Cardiogénétique Moléculaire, Centre de Biologie et Pathologie Est, Hospices Civils de Lyon, Lyon, France.,NeuroMyoGen Institute, CNRS UMR 5310 - INSERM U1217, Université de Lyon 1, Lyon, France
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Esslinger U, Garnier S, Korniat A, Proust C, Kararigas G, Müller-Nurasyid M, Empana JP, Morley MP, Perret C, Stark K, Bick AG, Prasad SK, Kriebel J, Li J, Tiret L, Strauch K, O'Regan DP, Marguiles KB, Seidman JG, Boutouyrie P, Lacolley P, Jouven X, Hengstenberg C, Komajda M, Hakonarson H, Isnard R, Arbustini E, Grallert H, Cook SA, Seidman CE, Regitz-Zagrosek V, Cappola TP, Charron P, Cambien F, Villard E. Exome-wide association study reveals novel susceptibility genes to sporadic dilated cardiomyopathy. PLoS One 2017; 12:e0172995. [PMID: 28296976 PMCID: PMC5351854 DOI: 10.1371/journal.pone.0172995] [Citation(s) in RCA: 83] [Impact Index Per Article: 11.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2016] [Accepted: 02/13/2017] [Indexed: 12/11/2022] Open
Abstract
Aims Dilated cardiomyopathy (DCM) is an important cause of heart failure with a strong familial component. We performed an exome-wide array-based association study (EWAS) to assess the contribution of missense variants to sporadic DCM. Methods and results 116,855 single nucleotide variants (SNVs) were analyzed in 2796 DCM patients and 6877 control subjects from 6 populations of European ancestry. We confirmed two previously identified associations with SNVs in BAG3 and ZBTB17 and discovered six novel DCM-associated loci (Q-value<0.01). The lead-SNVs at novel loci are common and located in TTN, SLC39A8, MLIP, FLNC, ALPK3 and FHOD3. In silico fine mapping identified HSPB7 as the most likely candidate at the ZBTB17 locus. Rare variant analysis (MAF<0.01) demonstrated significant association for TTN variants only (P = 0.0085). All candidate genes but one (SLC39A8) exhibit preferential expression in striated muscle tissues and mutations in TTN, BAG3, FLNC and FHOD3 are known to cause familial cardiomyopathy. We also investigated a panel of 48 known cardiomyopathy genes. Collectively, rare (n = 228, P = 0.0033) or common (n = 36, P = 0.019) variants with elevated in silico severity scores were associated with DCM, indicating that the spectrum of genes contributing to sporadic DCM extends beyond those identified here. Conclusion We identified eight loci independently associated with sporadic DCM. The functions of the best candidate genes at these loci suggest that proteostasis regulation might play a role in DCM pathophysiology.
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Affiliation(s)
- Ulrike Esslinger
- Sorbonne Universités, UPMC Univ Paris 06, INSERM UMR-S1166, Team Genomics & Pathophysiology of Cardiovascular Diseases, Paris, France
- ICAN Institute for Cardiometabolism and Nutrition, Paris, France
| | - Sophie Garnier
- Sorbonne Universités, UPMC Univ Paris 06, INSERM UMR-S1166, Team Genomics & Pathophysiology of Cardiovascular Diseases, Paris, France
- ICAN Institute for Cardiometabolism and Nutrition, Paris, France
| | - Agathe Korniat
- Sorbonne Universités, UPMC Univ Paris 06, INSERM UMR-S1166, Team Genomics & Pathophysiology of Cardiovascular Diseases, Paris, France
- ICAN Institute for Cardiometabolism and Nutrition, Paris, France
| | - Carole Proust
- Sorbonne Universités, UPMC Univ Paris 06, INSERM UMR-S1166, Team Genomics & Pathophysiology of Cardiovascular Diseases, Paris, France
- ICAN Institute for Cardiometabolism and Nutrition, Paris, France
| | - Georgios Kararigas
- Institute of Gender in Medicine and Center for Cardiovascular Research, Charite University Hospital, and DZHK, Berlin, Germany
| | - Martina Müller-Nurasyid
- Institute of Genetic Epidemiology, Helmholtz Zentrum München—German Research Center for Environmental Health, Neuherberg, Germany
- Department of Medicine I, Ludwig-Maximilians-University Munich, Munich, Germany
- DZHK (German Centre for Cardiovascular Research), Partnersite Munich Heart Alliance, Munich, Germany
| | - Jean-Philippe Empana
- INSERM, UMR-S970, Department of Epidemiology, Paris, France
- Université Paris Descartes, Sorbonne Paris Cité, Faculté de Médecine, Paris, France
| | - Michael P. Morley
- Penn Cardiovascular Institute and Department of Medicine, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA, United States of America
| | - Claire Perret
- Sorbonne Universités, UPMC Univ Paris 06, INSERM UMR-S1166, Team Genomics & Pathophysiology of Cardiovascular Diseases, Paris, France
- ICAN Institute for Cardiometabolism and Nutrition, Paris, France
| | - Klaus Stark
- Department of Genetic Epidemiology, University of Regensburg, Regensburg, Germany
| | - Alexander G. Bick
- Department of Medecine and Genetics Harvard Medical School, Boston, MA, United States of America
| | | | - Jennifer Kriebel
- Research Unit of Molecular Epidemiology, Helmholtz Zentrum München—German Research Center for Environmental Health, Neuherberg, Germany
- Institute of Epidemiology II, Helmholtz Zentrum München—German Research Center for Environmental Health, Neuherberg, Germany
- German Center for Diabetes Research, Neuherberg, Germany
| | - Jin Li
- Center for Applied Genomics, Children’s Hospital of Philadelphia, Philadelphia, PA, United States of America
| | - Laurence Tiret
- Sorbonne Universités, UPMC Univ Paris 06, INSERM UMR-S1166, Team Genomics & Pathophysiology of Cardiovascular Diseases, Paris, France
- ICAN Institute for Cardiometabolism and Nutrition, Paris, France
| | - Konstantin Strauch
- Institute of Genetic Epidemiology, Helmholtz Zentrum München—German Research Center for Environmental Health, Neuherberg, Germany
- Institute of Medical Informatics, Biometry and Epidemiology, Chair of Genetic Epidemiology, Ludwig-Maximilians-Universität, Munich, Germany
| | - Declan P. O'Regan
- Medical Research Council Clinical Sciences Centre, Faculty of Medicine, Imperial College London, London, United Kingdom
| | - Kenneth B. Marguiles
- Penn Cardiovascular Institute and Department of Medicine, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA, United States of America
| | - Jonathan G. Seidman
- Department of Medecine and Genetics Harvard Medical School, Boston, MA, United States of America
- Howard Hughes Medical Institute, Chevy Chase, MD, United States of America
| | - Pierre Boutouyrie
- INSERM, UMR-S970, Department of Epidemiology, Paris, France
- Université Paris Descartes, Sorbonne Paris Cité, Faculté de Médecine, Paris, France
- AP-HP, Georges Pompidou European Hospital, Pharmacology Department, Paris, France
| | | | - Xavier Jouven
- INSERM, UMR-S970, Department of Epidemiology, Paris, France
- Université Paris Descartes, Sorbonne Paris Cité, Faculté de Médecine, Paris, France
- AP-HP, Georges Pompidou European Hospital, Cardiology Department, Paris, France
| | - Christian Hengstenberg
- DZHK (German Centre for Cardiovascular Research), Partnersite Munich Heart Alliance, Munich, Germany
- Deutsches Herzzentrum München, Technische Universität München, Munich, Germany
| | - Michel Komajda
- Sorbonne Universités, UPMC Univ Paris 06, INSERM UMR-S1166, Team Genomics & Pathophysiology of Cardiovascular Diseases, Paris, France
- ICAN Institute for Cardiometabolism and Nutrition, Paris, France
- AP-HP, Pitié-Salpêtrière Hospital, Cardiology Department, Paris, France
- AP-HP, Hôpital Pitié-Salpêtrière, Centre de Référence des Maladies Cardiaques Héréditaires, Paris, France
| | - Hakon Hakonarson
- Center for Applied Genomics, Children’s Hospital of Philadelphia, Philadelphia, PA, United States of America
| | - Richard Isnard
- Sorbonne Universités, UPMC Univ Paris 06, INSERM UMR-S1166, Team Genomics & Pathophysiology of Cardiovascular Diseases, Paris, France
- ICAN Institute for Cardiometabolism and Nutrition, Paris, France
- AP-HP, Pitié-Salpêtrière Hospital, Cardiology Department, Paris, France
- AP-HP, Hôpital Pitié-Salpêtrière, Centre de Référence des Maladies Cardiaques Héréditaires, Paris, France
| | | | - Harald Grallert
- Research Unit of Molecular Epidemiology, Helmholtz Zentrum München—German Research Center for Environmental Health, Neuherberg, Germany
- Institute of Epidemiology II, Helmholtz Zentrum München—German Research Center for Environmental Health, Neuherberg, Germany
- German Center for Diabetes Research, Neuherberg, Germany
| | - Stuart A. Cook
- National Heart Centre Singapore, Singapore
- National Heart and Lung Institute, Imperial College London, London, United Kingdom
- Duke-NUS, Singapore
| | - Christine E. Seidman
- Department of Medecine and Genetics Harvard Medical School, Boston, MA, United States of America
- Howard Hughes Medical Institute, Chevy Chase, MD, United States of America
| | - Vera Regitz-Zagrosek
- Institute of Gender in Medicine and Center for Cardiovascular Research, Charite University Hospital, and DZHK, Berlin, Germany
| | - Thomas P. Cappola
- Penn Cardiovascular Institute and Department of Medicine, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA, United States of America
| | - Philippe Charron
- Sorbonne Universités, UPMC Univ Paris 06, INSERM UMR-S1166, Team Genomics & Pathophysiology of Cardiovascular Diseases, Paris, France
- ICAN Institute for Cardiometabolism and Nutrition, Paris, France
- AP-HP, Pitié-Salpêtrière Hospital, Cardiology Department, Paris, France
- AP-HP, Hôpital Pitié-Salpêtrière, Centre de Référence des Maladies Cardiaques Héréditaires, Paris, France
- Université de Versailles-Saint Quentin, AP-HP, Hôpital Ambroise Paré, Boulogne-Billancourt, France
| | - François Cambien
- Sorbonne Universités, UPMC Univ Paris 06, INSERM UMR-S1166, Team Genomics & Pathophysiology of Cardiovascular Diseases, Paris, France
- ICAN Institute for Cardiometabolism and Nutrition, Paris, France
- * E-mail: (EV); (FC)
| | - Eric Villard
- Sorbonne Universités, UPMC Univ Paris 06, INSERM UMR-S1166, Team Genomics & Pathophysiology of Cardiovascular Diseases, Paris, France
- ICAN Institute for Cardiometabolism and Nutrition, Paris, France
- AP-HP, Pitié-Salpêtrière Hospital, Cardiology Department, Paris, France
- * E-mail: (EV); (FC)
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Tobin SW, Yang D, Girgis J, Farahzad A, Blais A, McDermott JC. Regulation of Hspb7 by MEF2 and AP-1: implications for Hspb7 in muscle atrophy. J Cell Sci 2016; 129:4076-4090. [PMID: 27632998 DOI: 10.1242/jcs.190009] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2016] [Accepted: 09/08/2016] [Indexed: 12/31/2022] Open
Abstract
Mycocyte enhancer factor 2 (MEF2) and activator protein 1 (AP-1) transcription complexes have been individually implicated in myogenesis, but their genetic interaction has not previously been addressed. Using MEF2A, c-Jun and Fra-1 chromatin immunoprecipitation sequencing (ChIP-seq) data and predicted AP-1 consensus motifs, we identified putative common MEF2 and AP-1 target genes, several of which are implicated in regulating the actin cytoskeleton. Because muscle atrophy results in remodelling or degradation of the actin cytoskeleton, we characterized the expression of putative MEF2 and AP-1 target genes (Dstn, Flnc, Hspb7, Lmod3 and Plekhh2) under atrophic conditions using dexamethasone (Dex) treatment in skeletal myoblasts. Heat shock protein b7 (Hspb7) was induced by Dex treatment and further analyses revealed that loss of MEF2A using siRNA prevented Dex-regulated induction of Hspb7. Conversely, ectopic Fra-2 or c-Jun expression reduced Dex-mediated upregulation of Hspb7 whereas AP-1 depletion enhanced Hspb7 expression. In vivo, expression of Hspb7 and other autophagy-related genes was upregulated in response to atrophic conditions in mice. Manipulation of Hspb7 levels in mice also impacted gross muscle mass. Collectively, these data indicate that MEF2 and AP-1 confer antagonistic regulation of Hspb7 gene expression in skeletal muscle, with implications for autophagy and muscle atrophy.
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Affiliation(s)
- Stephanie Wales Tobin
- Department of Biology, York University, 4700 Keele Street, Toronto, Ontario, Canada M3J 1P3.,Muscle Health Research Centre (MHRC), York University, 4700 Keele Street, Toronto, Ontario, Canada M3J 1P3.,Centre for Research in Biomolecular Interactions (CRBI), 4700 Keele Street, Toronto, Ontario, Canada M3J 1P3
| | - Dabo Yang
- Ottawa Institute of Systems Biology, University of Ottawa, Health Sciences Campus, 451 Smyth Road, Ottawa, Ontario, Canada K1H 8M5
| | - John Girgis
- Ottawa Institute of Systems Biology, University of Ottawa, Health Sciences Campus, 451 Smyth Road, Ottawa, Ontario, Canada K1H 8M5
| | - Ali Farahzad
- Department of Biology, York University, 4700 Keele Street, Toronto, Ontario, Canada M3J 1P3.,Muscle Health Research Centre (MHRC), York University, 4700 Keele Street, Toronto, Ontario, Canada M3J 1P3.,Centre for Research in Biomolecular Interactions (CRBI), 4700 Keele Street, Toronto, Ontario, Canada M3J 1P3
| | - Alexandre Blais
- Ottawa Institute of Systems Biology, University of Ottawa, Health Sciences Campus, 451 Smyth Road, Ottawa, Ontario, Canada K1H 8M5
| | - John C McDermott
- Department of Biology, York University, 4700 Keele Street, Toronto, Ontario, Canada M3J 1P3 .,Muscle Health Research Centre (MHRC), York University, 4700 Keele Street, Toronto, Ontario, Canada M3J 1P3.,Centre for Research in Biomolecular Interactions (CRBI), 4700 Keele Street, Toronto, Ontario, Canada M3J 1P3.,Centre for Research in Mass Spectrometry (CRMS), York University, 4700 Keele Street, Toronto, Ontario, Canada M3J 1P3
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35
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Jee H. Size dependent classification of heat shock proteins: a mini-review. J Exerc Rehabil 2016; 12:255-9. [PMID: 27656620 PMCID: PMC5031383 DOI: 10.12965/jer.1632642.321] [Citation(s) in RCA: 98] [Impact Index Per Article: 12.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2016] [Accepted: 07/23/2016] [Indexed: 12/18/2022] Open
Abstract
Molecular chaperones are ubiquitous and abundant within cellular environments, functioning as a defense mechanism against outer environment. The range of molecular chaperones varies from 10 to over 100 kDa. Depending on the size, the specific locations and physiological roles of molecular chaperones vary within the cell. Multifunctionality of heat shock proteins (HSPs) expressed via various cyto-stress including heat shock have been spotlighted as a reliable prognostic target biomarker for therapeutic purpose in neuromuscular disease or cancer related studies. HSP also plays a critical role in the maintenance of proteins and cellular homeostasis in exercise-induced adaptation. Such various functions of HSPs give scientists insights into intracellular protective mechanisms in the living body thus HSPs can be target molecules to know the defense mechanism in cellular environment. Based on experimental results regarding small to large scaled HSPs, this review aims to provide updated important information regarding the modality of responses of intracellular HSPs towards extracellular stimulations. Further, the expressive mechanisms of HSPs data from tremendous in vivo and in vitro studies underlying the enhancement of the functionality of living body will be discussed.
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Affiliation(s)
- Hyunseok Jee
- Department of Rehabilitation Medicine, Seoul National University Bundang Hospital, Seongnam, Korea
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