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Wang D, Chang F, Guo Z, Chen M, Feng T, Zhang M, Cui X, Jiang Y, Li J, Li Y, Yan J. The influence of Type I and III collagen on the proliferation, migration and differentiation of myoblasts. Tissue Cell 2024; 90:102506. [PMID: 39096791 DOI: 10.1016/j.tice.2024.102506] [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: 03/03/2024] [Revised: 07/07/2024] [Accepted: 07/29/2024] [Indexed: 08/05/2024]
Abstract
Myoblast is a kind of activated muscle stem cell. Its biological activities, such as proliferation, migration, differentiation, and fusion, play a crucial role in maintaining the integrity of the skeletal muscle system. These activities of myoblasts can be significantly influenced by the extracellular matrix. Collagen, being a principal constituent of the extracellular matrix, substantially influences these biological activities. In skeletal muscle, collagen I and III are two kinds of primary collagen types. Their influence on myoblasts and the difference between them remain ambiguous. The purpose of this study is to discover the influence of collagen I and III on biological function of myoblasts and compare their differences. We used C2C12 cell line and primary myoblasts to discover the effect of collagen I and III on proliferation, migration and differentiation of myoblasts and then performed the transcriptome sequencing and analysis. The results showed that both collagen I and III enhanced the proliferation of myoblasts, with no statistical difference between them. Similarly, collagen I and III enhanced the migration of myoblasts, with collagen I was more pronounced in Transwell assay. On the contrary, collagen I and III inhibited myoblasts differentiation, with collagen III was more pronounced at gene expression level. The transcriptome sequencing identified DEGs and enrichment analysis elucidated different terms between Type I and III collagen. Collectively, our research preliminarily elucidated the influence of collagen I and III on myoblasts and their difference and provided the preliminary experimental foundation for subsequent research.
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Affiliation(s)
- Duanyang Wang
- Department of Orthopedics, The Second Affiliated Hospital of Harbin Medical University, Harbin, China
| | - Feifan Chang
- Department of Orthopedics, Medical School of Nankai University, Tianjin, China
| | - Zhikang Guo
- Department of Endocrinology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
| | - Ming Chen
- Department of Orthopedics, The Fourth Medical Centre, Chinese PLA General Hospital, Beijing, China
| | - Taojin Feng
- Department of Orthopedics, The Fourth Medical Centre, Chinese PLA General Hospital, Beijing, China
| | - Mingming Zhang
- Department of Orthopedics, The Fourth Medical Centre, Chinese PLA General Hospital, Beijing, China
| | - Xiang Cui
- Department of Orthopedics, The Fourth Medical Centre, Chinese PLA General Hospital, Beijing, China
| | - Yuheng Jiang
- Department of Orthopedics, The Fourth Medical Centre, Chinese PLA General Hospital, Beijing, China
| | - Jia Li
- Department of Orthopedics, The Fourth Medical Centre, Chinese PLA General Hospital, Beijing, China
| | - Yi Li
- Department of Orthopedics, The Fourth Medical Centre, Chinese PLA General Hospital, Beijing, China.
| | - Jinglong Yan
- Department of Orthopedics, The Second Affiliated Hospital of Harbin Medical University, Harbin, China.
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2
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Alvarez AM, Trufen CEM, Buri MV, de Sousa MBN, Arruda-Alves FI, Lichtenstein F, Castro de Oliveira U, Junqueira-de-Azevedo IDLM, Teixeira C, Moreira V. Tumor Necrosis Factor-Alpha Modulates Expression of Genes Involved in Cytokines and Chemokine Pathways in Proliferative Myoblast Cells. Cells 2024; 13:1161. [PMID: 38995013 PMCID: PMC11240656 DOI: 10.3390/cells13131161] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2024] [Revised: 06/20/2024] [Accepted: 06/28/2024] [Indexed: 07/13/2024] Open
Abstract
Skeletal muscle regeneration after injury is a complex process involving inflammatory signaling and myoblast activation. Pro-inflammatory cytokines like tumor necrosis factor-alpha (TNF-α) are key mediators, but their effects on gene expression in proliferating myoblasts are unclear. We performed the RNA sequencing of TNF-α treated C2C12 myoblasts to elucidate the signaling pathways and gene networks regulated by TNF-α during myoblast proliferation. The TNF-α (10 ng/mL) treatment of C2C12 cells led to 958 differentially expressed genes compared to the controls. Pathway analysis revealed significant regulation of TNF-α signaling, along with the chemokine and IL-17 pathways. Key upregulated genes included cytokines (e.g., IL-6), chemokines (e.g., CCL7), and matrix metalloproteinases (MMPs). TNF-α increased myogenic factor 5 (Myf5) but decreased MyoD protein levels and stimulated the release of MMP-9, MMP-10, and MMP-13. TNF-α also upregulates versican and myostatin mRNA. Overall, our study demonstrates the TNF-α modulation of distinct gene expression patterns and signaling pathways that likely contribute to enhanced myoblast proliferation while suppressing premature differentiation after muscle injury. Elucidating the mechanisms involved in skeletal muscle regeneration can aid in the development of regeneration-enhancing therapeutics.
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Affiliation(s)
- Angela María Alvarez
- Centre of Excellence in New Target Discovery (CENTD), Butantan Institute, Sao Paulo 05503-900, SP, Brazil; (A.M.A.); (C.E.M.T.); (M.V.B.); (F.I.A.-A.); (F.L.)
- Reproduction Group, Pharmacy Department, School of Pharmaceutical and Food Sciences, University of Antioquia—UdeA, Medellín 050010, Colombia
- Departamento de Farmacologia, Escola Paulista de Medicina, Universidade Federal de Sao Paulo, Sao Paulo 04044-020, SP, Brazil;
| | - Carlos Eduardo Madureira Trufen
- Centre of Excellence in New Target Discovery (CENTD), Butantan Institute, Sao Paulo 05503-900, SP, Brazil; (A.M.A.); (C.E.M.T.); (M.V.B.); (F.I.A.-A.); (F.L.)
- Czech Centre for Phenogenomics, Institute of Molecular Genetics of the Czech Academy of Sciences, v.i, 252 50 Vestec, Czech Republic
| | - Marcus Vinicius Buri
- Centre of Excellence in New Target Discovery (CENTD), Butantan Institute, Sao Paulo 05503-900, SP, Brazil; (A.M.A.); (C.E.M.T.); (M.V.B.); (F.I.A.-A.); (F.L.)
| | - Marcela Bego Nering de Sousa
- Departamento de Farmacologia, Escola Paulista de Medicina, Universidade Federal de Sao Paulo, Sao Paulo 04044-020, SP, Brazil;
| | - Francisco Ivanio Arruda-Alves
- Centre of Excellence in New Target Discovery (CENTD), Butantan Institute, Sao Paulo 05503-900, SP, Brazil; (A.M.A.); (C.E.M.T.); (M.V.B.); (F.I.A.-A.); (F.L.)
| | - Flavio Lichtenstein
- Centre of Excellence in New Target Discovery (CENTD), Butantan Institute, Sao Paulo 05503-900, SP, Brazil; (A.M.A.); (C.E.M.T.); (M.V.B.); (F.I.A.-A.); (F.L.)
| | - Ursula Castro de Oliveira
- Laboratório de Toxinologia Aplicada, Center of Toxins, Immune-Response and Cell Signaling (CeTICS), Butantan Institute, Sao Paulo 05503-900, SP, Brazil; (U.C.d.O.); (I.d.L.M.J.-d.-A.)
| | | | - Catarina Teixeira
- Centre of Excellence in New Target Discovery (CENTD), Butantan Institute, Sao Paulo 05503-900, SP, Brazil; (A.M.A.); (C.E.M.T.); (M.V.B.); (F.I.A.-A.); (F.L.)
- Laboratório de Farmacologia, Butantan Institute, Sao Paulo 05503-900, SP, Brazil
| | - Vanessa Moreira
- Centre of Excellence in New Target Discovery (CENTD), Butantan Institute, Sao Paulo 05503-900, SP, Brazil; (A.M.A.); (C.E.M.T.); (M.V.B.); (F.I.A.-A.); (F.L.)
- Departamento de Farmacologia, Escola Paulista de Medicina, Universidade Federal de Sao Paulo, Sao Paulo 04044-020, SP, Brazil;
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3
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Hernandez-Benitez R, Wang C, Shi L, Ouchi Y, Zhong C, Hishida T, Liao HK, Magill EA, Memczak S, Soligalla RD, Fresia C, Hatanaka F, Lamas V, Guillen I, Sahu S, Yamamoto M, Shao Y, Aguirre-Vazquez A, Nuñez Delicado E, Guillen P, Rodriguez Esteban C, Qu J, Reddy P, Horvath S, Liu GH, Magistretti P, Izpisua Belmonte JC. Intervention with metabolites emulating endogenous cell transitions accelerates muscle regeneration in young and aged mice. Cell Rep Med 2024; 5:101449. [PMID: 38508141 PMCID: PMC10983034 DOI: 10.1016/j.xcrm.2024.101449] [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: 05/24/2022] [Revised: 10/10/2023] [Accepted: 02/08/2024] [Indexed: 03/22/2024]
Abstract
Tissue regeneration following an injury requires dynamic cell-state transitions that allow for establishing the cell identities required for the restoration of tissue homeostasis and function. Here, we present a biochemical intervention that induces an intermediate cell state mirroring a transition identified during normal differentiation of myoblasts and other multipotent and pluripotent cells to mature cells. When applied in somatic differentiated cells, the intervention, composed of one-carbon metabolites, reduces some dedifferentiation markers without losing the lineage identity, thus inducing limited reprogramming into a more flexible cell state. Moreover, the intervention enabled accelerated repair after muscle injury in young and aged mice. Overall, our study uncovers a conserved biochemical transitional phase that enhances cellular plasticity in vivo and hints at potential and scalable biochemical interventions of use in regenerative medicine and rejuvenation interventions that may be more tractable than genetic ones.
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Affiliation(s)
- Reyna Hernandez-Benitez
- Gene Expression Laboratory, Salk Institute for Biological Studies, La Jolla, CA 92037, USA; Altos Labs, Inc., San Diego, CA 92121, USA
| | - Chao Wang
- Altos Labs, Inc., San Diego, CA 92121, USA
| | - Lei Shi
- Key Laboratory of Genetic Evolution & Animal Models, Kunming Institute of Zoology, Chinese Academy of Sciences, Kunming 650201, China
| | - Yasuo Ouchi
- Altos Labs, Inc., San Diego, CA 92121, USA; Department of Regenerative Medicine, Chiba University Graduate School of Medicine, Chiba, Japan
| | | | - Tomoaki Hishida
- Laboratory of Biological Chemistry, School of Pharmaceutical Sciences, Wakayama Medical University, 25-1 Shichibancho, Wakayama 640-8156, Japan
| | - Hsin-Kai Liao
- Gene Expression Laboratory, Salk Institute for Biological Studies, La Jolla, CA 92037, USA
| | - Eric A Magill
- Gene Expression Laboratory, Salk Institute for Biological Studies, La Jolla, CA 92037, USA
| | | | - Rupa D Soligalla
- Gene Expression Laboratory, Salk Institute for Biological Studies, La Jolla, CA 92037, USA
| | - Chiara Fresia
- Gene Expression Laboratory, Salk Institute for Biological Studies, La Jolla, CA 92037, USA
| | | | | | | | | | | | | | | | - Estrella Nuñez Delicado
- Universidad Católica San Antonio de Murcia (UCAM), Campus de los Jerónimos, Nº 135 12, 30107 Guadalupe, Spain
| | | | | | - Jing Qu
- State Key Laboratory of Stem Cell and Reproductive Biology, Institute of Zoology, Chinese Academy of Sciences, Beijing 100101, China; Institute for Stem Cell and Regeneration, Chinese Academy of Sciences, Beijing 100101, China
| | | | | | - Guang-Hui Liu
- Institute for Stem Cell and Regeneration, Chinese Academy of Sciences, Beijing 100101, China; State Key Laboratory of Membrane Biology, Institute of Zoology, Chinese Academy of Sciences, Beijing 100101, China
| | - Pierre Magistretti
- King Abdullah University of Science and Technology (KAUST), Thuwal 23955-6900, Saudi Arabia.
| | - Juan Carlos Izpisua Belmonte
- Gene Expression Laboratory, Salk Institute for Biological Studies, La Jolla, CA 92037, USA; Altos Labs, Inc., San Diego, CA 92121, USA.
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4
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Tyagi SC, Pushpakumar S, Sen U, Akinterinwa OE, Zheng Y, Mokshagundam SPL, Kalra DK, Singh M. Role of circadian clock system in the mitochondrial trans-sulfuration pathway and tissue remodeling. Can J Physiol Pharmacol 2024; 102:105-115. [PMID: 37979203 DOI: 10.1139/cjpp-2023-0186] [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] [Indexed: 11/20/2023]
Abstract
Previous studies from our laboratory revealed that the gaseous molecule hydrogen sulfide (H2S), a metabolic product of epigenetics, involves trans-sulfuration pathway for ensuring metabolism and clearance of homocysteine (Hcy) from body, thereby mitigating the skeletal muscle's pathological remodeling. Although the master circadian clock regulator that is known as brain and muscle aryl hydrocarbon receptor nuclear translocator like protein 1 (i.e., BMAL 1) is associated with S-adenosylhomocysteine hydrolase (SAHH) and Hcy metabolism but how trans-sulfuration pathway is influenced by the circadian clock remains unexplored. We hypothesize that alterations in the functioning of circadian clock during sleep and wake cycle affect skeletal muscle's biology. To test this hypothesis, we measured serum matrix metalloproteinase (MMP) activities using gelatin gels for analyzing the MMP-2 and MMP-9. Further, employing casein gels, we also studied MMP-13 that is known to be influenced by the growth arrest and DNA damage-45 (GADD45) protein during sleep and wake cycle. The wild type and cystathionine β synthase-deficient (CBS-/+) mice strains were treated with H2S and subjected to measurement of trans-sulfuration factors from skeletal muscle tissues. The results suggested highly robust activation of MMPs in the wake mice versus sleep mice, which appears somewhat akin to the "1-carbon metabolic dysregulation", which takes place during remodeling of extracellular matrix during muscular dystrophy. Interestingly, the levels of trans-sulfuration factors such as CBS, cystathionine γ lyase (CSE), methyl tetrahydrofolate reductase (MTHFR), phosphatidylethanolamine N-methyltransferase (PEMT), and Hcy-protein bound paraoxonase 1 (PON1) were attenuated in CBS-/+ mice. However, treatment with H2S mitigated the attenuation of the trans-sulfuration pathway. In addition, levels of mitochondrial peroxisome proliferator-activated receptor-gamma coactivator 1-α (PGC 1-α) and mitofusin-2 (MFN-2) were significantly improved by H2S intervention. Our findings suggest participation of the circadian clock in trans-sulfuration pathway that affects skeletal muscle remodeling and mitochondrial regeneration.
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Affiliation(s)
- Suresh C Tyagi
- Department of Physiology, School of Medicine, University of Louisville, Louisville, KY 40202, USA
| | - Sathnur Pushpakumar
- Department of Physiology, School of Medicine, University of Louisville, Louisville, KY 40202, USA
| | - Utpal Sen
- Department of Physiology, School of Medicine, University of Louisville, Louisville, KY 40202, USA
| | - Oluwaseun E Akinterinwa
- Department of Physiology, School of Medicine, University of Louisville, Louisville, KY 40202, USA
| | - Yuting Zheng
- Department of Physiology, School of Medicine, University of Louisville, Louisville, KY 40202, USA
| | - Sri Prakash L Mokshagundam
- Division of Endocrinology, Metabolism and Diabetes and Robley Rex VA Medical Center, University of Louisville School of Medicine, Louisville, KY 40202, USA
| | - Dinesh K Kalra
- Division of Cardiovascular Medicine, University of Louisville School of Medicine, Louisville, KY 40202, USA
| | - Mahavir Singh
- Department of Physiology, School of Medicine, University of Louisville, Louisville, KY 40202, USA
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5
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Chellini F, Tani A, Parigi M, Palmieri F, Garella R, Zecchi-Orlandini S, Squecco R, Sassoli C. HIF-1α/MMP-9 Axis Is Required in the Early Phases of Skeletal Myoblast Differentiation under Normoxia Condition In Vitro. Cells 2023; 12:2851. [PMID: 38132171 PMCID: PMC10742321 DOI: 10.3390/cells12242851] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2023] [Revised: 12/12/2023] [Accepted: 12/14/2023] [Indexed: 12/23/2023] Open
Abstract
Hypoxia-inducible factor (HIF)-1α represents an oxygen-sensitive subunit of HIF transcriptional factor, which is usually degraded in normoxia and stabilized in hypoxia to regulate several target gene expressions. Nevertheless, in the skeletal muscle satellite stem cells (SCs), an oxygen level-independent regulation of HIF-1α has been observed. Although HIF-1α has been highlighted as a SC function regulator, its spatio-temporal expression and role during myogenic progression remain controversial. Herein, using biomolecular, biochemical, morphological and electrophysiological analyses, we analyzed HIF-1α expression, localization and role in differentiating murine C2C12 myoblasts and SCs under normoxia. In addition, we evaluated the role of matrix metalloproteinase (MMP)-9 as an HIF-1α effector, considering that MMP-9 is involved in myogenesis and is an HIF-1α target in different cell types. HIF-1α expression increased after 24/48 h of differentiating culture and tended to decline after 72 h/5 days. Committed and proliferating mononuclear myoblasts exhibited nuclear HIF-1α expression. Differently, the more differentiated elongated and parallel-aligned cells, which are likely ready to fuse with each other, show a mainly cytoplasmic localization of the factor. Multinucleated myotubes displayed both nuclear and cytoplasmic HIF-1α expression. The MMP-9 and MyoD (myogenic activation marker) expression synchronized with that of HIF-1α, increasing after 24 h of differentiation. By means of silencing HIF-1α and MMP-9 by short-interfering RNA and MMP-9 pharmacological inhibition, this study unraveled MMP-9's role as an HIF-1α downstream effector and the fact that the HIF-1α/MMP-9 axis is essential in morpho-functional cell myogenic commitment.
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Affiliation(s)
- Flaminia Chellini
- Department of Experimental and Clinical Medicine, Section of Anatomy and Histology, Imaging Platform, University of Florence, 50134 Florence, Italy; (F.C.); (A.T.); (M.P.); (S.Z.-O.)
| | - Alessia Tani
- Department of Experimental and Clinical Medicine, Section of Anatomy and Histology, Imaging Platform, University of Florence, 50134 Florence, Italy; (F.C.); (A.T.); (M.P.); (S.Z.-O.)
| | - Martina Parigi
- Department of Experimental and Clinical Medicine, Section of Anatomy and Histology, Imaging Platform, University of Florence, 50134 Florence, Italy; (F.C.); (A.T.); (M.P.); (S.Z.-O.)
| | - Francesco Palmieri
- Department of Experimental and Clinical Medicine, Section of Physiological Sciences, University of Florence, 50134 Florence, Italy; (F.P.); (R.G.)
| | - Rachele Garella
- Department of Experimental and Clinical Medicine, Section of Physiological Sciences, University of Florence, 50134 Florence, Italy; (F.P.); (R.G.)
| | - Sandra Zecchi-Orlandini
- Department of Experimental and Clinical Medicine, Section of Anatomy and Histology, Imaging Platform, University of Florence, 50134 Florence, Italy; (F.C.); (A.T.); (M.P.); (S.Z.-O.)
| | - Roberta Squecco
- Department of Experimental and Clinical Medicine, Section of Physiological Sciences, University of Florence, 50134 Florence, Italy; (F.P.); (R.G.)
| | - Chiara Sassoli
- Department of Experimental and Clinical Medicine, Section of Anatomy and Histology, Imaging Platform, University of Florence, 50134 Florence, Italy; (F.C.); (A.T.); (M.P.); (S.Z.-O.)
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6
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Endo T. Postnatal skeletal muscle myogenesis governed by signal transduction networks: MAPKs and PI3K-Akt control multiple steps. Biochem Biophys Res Commun 2023; 682:223-243. [PMID: 37826946 DOI: 10.1016/j.bbrc.2023.09.048] [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: 07/19/2023] [Revised: 09/06/2023] [Accepted: 09/18/2023] [Indexed: 10/14/2023]
Abstract
Skeletal muscle myogenesis represents one of the most intensively and extensively examined systems of cell differentiation, tissue formation, and regeneration. Muscle regeneration provides an in vivo model system of postnatal myogenesis. It comprises multiple steps including muscle stem cell (or satellite cell) quiescence, activation, migration, myogenic determination, myoblast proliferation, myocyte differentiation, myofiber maturation, and hypertrophy. A variety of extracellular signaling and subsequent intracellular signal transduction pathways or networks govern the individual steps of postnatal myogenesis. Among them, MAPK pathways (the ERK, JNK, p38 MAPK, and ERK5 pathways) and PI3K-Akt signaling regulate multiple steps of myogenesis. Ca2+, cytokine, and Wnt signaling also participate in several myogenesis steps. These signaling pathways often control cell cycle regulatory proteins or the muscle-specific MyoD family and the MEF2 family of transcription factors. This article comprehensively reviews molecular mechanisms of the individual steps of postnatal skeletal muscle myogenesis by focusing on signal transduction pathways or networks. Nevertheless, no or only a partial signaling molecules or pathways have been identified in some responses during myogenesis. The elucidation of these unidentified signaling molecules and pathways leads to an extensive understanding of the molecular mechanisms of myogenesis.
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Affiliation(s)
- Takeshi Endo
- Department of Biology, Graduate School of Science, Chiba University, Yayoicho, Inageku, Chiba, Chiba 263-8522, Japan.
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7
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Wozniak J, Loba W, Wysocka A, Dzimira S, Przadka P, Switonski M, Nowacka-Woszuk J. Altered Transcript Levels of MMP13 and VIT Genes in the Muscle and Connective Tissue of Pigs with Umbilical Hernia. Genes (Basel) 2023; 14:1903. [PMID: 37895252 PMCID: PMC10606093 DOI: 10.3390/genes14101903] [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: 09/01/2023] [Revised: 09/27/2023] [Accepted: 09/29/2023] [Indexed: 10/29/2023] Open
Abstract
Umbilical hernia (UH) and inguinal hernia (IH) are among the most common defects in pigs, affecting their welfare and resulting in economic losses. In this study, we aimed to verify the association of previously reported differences in transcript levels of the ACAN, COL6A5, MMP13, and VIT genes with the occurrence of UH and IH. We examined mRNA levels in muscle and connective tissue from 68 animals-34 affected by UH and 34 controls. In a second cohort, we examined inguinal channel samples from 46 pigs (in four groups). We determined DNA methylation levels in muscle tissue for the UH and control animals. The transcript level of MMP13 changed in the UH cases, being upregulated and downregulated in muscle and connective tissue, respectively, and the VIT gene also showed an increased muscular mRNA level. The transcript of the ACAN gene significantly decreased in old pigs with IH. We further observed an increased DNA methylation level for one CpG site within the MMP13 gene in UH individuals. We conclude that these alterations in gene mRNA levels in the UH animals depend on the tissue and can sometimes be a consequence of, not a cause of, the affected phenotype.
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Affiliation(s)
- Jakub Wozniak
- Department of Genetics and Animal Breeding, Poznan University of Life Sciences, Wolynska 33, 60-637 Poznan, Poland; (J.W.); (W.L.); (A.W.); (M.S.)
| | - Weronika Loba
- Department of Genetics and Animal Breeding, Poznan University of Life Sciences, Wolynska 33, 60-637 Poznan, Poland; (J.W.); (W.L.); (A.W.); (M.S.)
| | - Alicja Wysocka
- Department of Genetics and Animal Breeding, Poznan University of Life Sciences, Wolynska 33, 60-637 Poznan, Poland; (J.W.); (W.L.); (A.W.); (M.S.)
| | - Stanislaw Dzimira
- Department of Pathology, Wroclaw University of Environmental and Life Sciences, C.K. Norwida 31, 50-375 Wroclaw, Poland;
| | - Przemyslaw Przadka
- Department of Surgery, Wroclaw University of Environmental and Life Sciences, Plac Grunwaldzki 51, 50-366 Wroclaw, Poland;
| | - Marek Switonski
- Department of Genetics and Animal Breeding, Poznan University of Life Sciences, Wolynska 33, 60-637 Poznan, Poland; (J.W.); (W.L.); (A.W.); (M.S.)
| | - Joanna Nowacka-Woszuk
- Department of Genetics and Animal Breeding, Poznan University of Life Sciences, Wolynska 33, 60-637 Poznan, Poland; (J.W.); (W.L.); (A.W.); (M.S.)
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8
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Zhao Y, He S, Huang J, Liu M. Genome-Wide Association Analysis of Muscle pH in Texel Sheep × Altay Sheep F 2 Resource Population. Animals (Basel) 2023; 13:2162. [PMID: 37443959 DOI: 10.3390/ani13132162] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2023] [Revised: 05/29/2023] [Accepted: 06/25/2023] [Indexed: 07/15/2023] Open
Abstract
pH was one of the important meat quality traits, which was an important factor affecting the storage/shelf life and quality of meat in meat production. In order to find a way to extend the storage/shelf life, the pH values (pH45min, pH24h, pH48h and pH72h) of the longissimus dorsi muscles in F2 individuals of 462 Texel sheep × Altay sheep were determined, genotyping was performed using Illumina Ovine SNP 600 K BeadChip and whole genome resequencing technology, a genome-wide association analysis (GWAS) was used to screen the candidate genes and molecular markers for pH values related to the quality traits of mutton, and the effects of population stratification were detected by Q-Q plots. The results showed that the pH population stratification analysis did not find significant systemic bias, and there was no obvious population stratification effect. The results of the association analysis showed that 28 SNPs significantly associated with pH reached the level of genomic significance. The candidate gene associated with pH45min was identified as the CCDC92 gene by gene annotation and a search of the literature. Candidate genes related to pH24h were KDM4C, TGFB2 and GOT2 genes. The candidate genes related to pH48h were MMP12 and MMP13 genes. The candidate genes related to pH72h were HILPDA and FAT1 genes. Further bioinformatics analyses showed 24 gene ontology terms and five signaling pathways that were significantly enriched (p ≤ 0.05). Many terms and pathways were related to cellular components, processes of protein modification, the activity of protein dimerization and hydrolase activity. These identified SNPs and genes could provide useful information about meat and the storage/shelf life of meat, thereby extending the storage/shelf life and quality of meat.
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Affiliation(s)
- Yilong Zhao
- College of Animal Science and Technology, Shihezi University, Shihezi 832000, China
- College of Animal Science and Technology, Xinjiang Agricultural Vocational and Technical College, Changji 831100, China
| | - Sangang He
- Biotechnology Institute, Xinjiang Academy of Animal Science, Urumqi 830013, China
| | | | - Mingjun Liu
- Biotechnology Institute, Xinjiang Academy of Animal Science, Urumqi 830013, China
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9
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Molière S, Jaulin A, Tomasetto CL, Dali-Youcef N. Roles of Matrix Metalloproteinases and Their Natural Inhibitors in Metabolism: Insights into Health and Disease. Int J Mol Sci 2023; 24:10649. [PMID: 37445827 DOI: 10.3390/ijms241310649] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2023] [Revised: 06/21/2023] [Accepted: 06/24/2023] [Indexed: 07/15/2023] Open
Abstract
Matrix metalloproteinases (MMPs) are a family of zinc-activated peptidases that can be classified into six major classes, including gelatinases, collagenases, stromelysins, matrilysins, membrane type metalloproteinases, and other unclassified MMPs. The activity of MMPs is regulated by natural inhibitors called tissue inhibitors of metalloproteinases (TIMPs). MMPs are involved in a wide range of biological processes, both in normal physiological conditions and pathological states. While some of these functions occur during development, others occur in postnatal life. Although the roles of several MMPs have been extensively studied in cancer and inflammation, their function in metabolism and metabolic diseases have only recently begun to be uncovered, particularly over the last two decades. This review aims to summarize the current knowledge regarding the metabolic roles of metalloproteinases in physiology, with a strong emphasis on adipose tissue homeostasis, and to highlight the consequences of impaired or exacerbated MMP actions in the development of metabolic disorders such as obesity, fatty liver disease, and type 2 diabetes.
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Affiliation(s)
- Sébastien Molière
- Institut de Génétique et de Biologie Moléculaire et Cellulaire Illkirch, 67400 Illkirch-Graffenstaden, France
- Centre National de la Recherche Scientifique, UMR 7104, 67400 Illkirch-Graffenstaden, France
- Institut National de la Santé et de la Recherche Médicale, U1258, 67400 Illkirch-Graffenstaden, France
- Faculté de Médecine, Université de Strasbourg, 67000 Strasbourg, France
- Department of Radiology, Strasbourg University Hospital, Hôpital de Hautepierre, Avenue Molière, 67200 Strasbourg, France
- Breast and Thyroid Imaging Unit, ICANS-Institut de Cancérologie Strasbourg Europe, 67200 Strasbourg, France
| | - Amélie Jaulin
- Institut de Génétique et de Biologie Moléculaire et Cellulaire Illkirch, 67400 Illkirch-Graffenstaden, France
- Centre National de la Recherche Scientifique, UMR 7104, 67400 Illkirch-Graffenstaden, France
- Institut National de la Santé et de la Recherche Médicale, U1258, 67400 Illkirch-Graffenstaden, France
- Faculté de Médecine, Université de Strasbourg, 67000 Strasbourg, France
| | - Catherine-Laure Tomasetto
- Institut de Génétique et de Biologie Moléculaire et Cellulaire Illkirch, 67400 Illkirch-Graffenstaden, France
- Centre National de la Recherche Scientifique, UMR 7104, 67400 Illkirch-Graffenstaden, France
- Institut National de la Santé et de la Recherche Médicale, U1258, 67400 Illkirch-Graffenstaden, France
| | - Nassim Dali-Youcef
- Institut de Génétique et de Biologie Moléculaire et Cellulaire Illkirch, 67400 Illkirch-Graffenstaden, France
- Centre National de la Recherche Scientifique, UMR 7104, 67400 Illkirch-Graffenstaden, France
- Institut National de la Santé et de la Recherche Médicale, U1258, 67400 Illkirch-Graffenstaden, France
- Faculté de Médecine, Université de Strasbourg, 67000 Strasbourg, France
- Laboratoire de Biochimie et Biologie Moléculaire, Pôle de Biologie, Hôpitaux Universitaires de Strasbourg, Nouvel Hôpital Civil, 67000 Strasbourg, France
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10
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Muscle Regeneration in Holothurians without the Upregulation of Muscle Genes. Int J Mol Sci 2022; 23:ijms232416037. [PMID: 36555677 PMCID: PMC9785333 DOI: 10.3390/ijms232416037] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2022] [Revised: 12/10/2022] [Accepted: 12/14/2022] [Indexed: 12/23/2022] Open
Abstract
The holothurian Eupentacta fraudatrix is capable of fully restoring its muscles after transverse dissection. Although the regeneration of these structures is well studied at the cellular level, the molecular basis of the process remains poorly understood. To identify genes that may be involved in the regulation of muscle regeneration, the transcriptome of the longitudinal muscle band of E. fraudatrix has been sequenced at different time periods post-injury. An analysis of the map of biological processes and pathways has shown that most genes associated with myogenesis decrease their expression during the regeneration. The only exception is the genes united by the GO term "heart valve development". This may indicate the antiquity of mechanisms of mesodermal structure transformation, which was co-opted into various morphogeneses in deuterostomes. Two groups of genes that play a key role in the regeneration have been analyzed: transcription factors and matrix metalloproteinases. A total of six transcription factor genes (Ef-HOX5, Ef-ZEB2, Ef-RARB, Ef-RUNX1, Ef-SOX17, and Ef-ZNF318) and seven matrix metalloproteinase genes (Ef-MMP11, Ef-MMP13, Ef-MMP13-1, Ef-MMP16-2, Ef-MMP16-3, Ef-MMP24, and Ef-MMP24-1) showing differential expression during myogenesis have been revealed. The identified genes are assumed to be involved in the muscle regeneration in holothurians.
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11
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Wang Y, Lu J, Liu Y. Skeletal Muscle Regeneration in Cardiotoxin-Induced Muscle Injury Models. Int J Mol Sci 2022; 23:ijms232113380. [PMID: 36362166 PMCID: PMC9657523 DOI: 10.3390/ijms232113380] [Citation(s) in RCA: 18] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2022] [Revised: 10/27/2022] [Accepted: 10/28/2022] [Indexed: 11/06/2022] Open
Abstract
Skeletal muscle injuries occur frequently in daily life and exercise. Understanding the mechanisms of regeneration is critical for accelerating the repair and regeneration of muscle. Therefore, this article reviews knowledge on the mechanisms of skeletal muscle regeneration after cardiotoxin-induced injury. The process of regeneration is similar in different mouse strains and is inhibited by aging, obesity, and diabetes. Exercise, microcurrent electrical neuromuscular stimulation, and mechanical loading improve regeneration. The mechanisms of regeneration are complex and strain-dependent, and changes in functional proteins involved in the processes of necrotic fiber debris clearance, M1 to M2 macrophage conversion, SC activation, myoblast proliferation, differentiation and fusion, and fibrosis and calcification influence the final outcome of the regenerative activity.
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12
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Parker J, Roth O. Comparative assessment of immunological tolerance in fish with natural immunodeficiency. DEVELOPMENTAL AND COMPARATIVE IMMUNOLOGY 2022; 132:104393. [PMID: 35276317 DOI: 10.1016/j.dci.2022.104393] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/13/2021] [Revised: 02/24/2022] [Accepted: 03/05/2022] [Indexed: 06/14/2023]
Abstract
Natural occurrences of immunodeficiency by definition should lead to compromised immune function. The major histocompatibility complexes (MHC) are key components of the vertebrate adaptive immune system, charged with mediating allorecognition and antigen presentation functions. To this end, the genomic loss of the MHC II pathway in Syngnathus pipefishes raises questions regarding their immunological vigilance and allorecognition capabilities. Utilising allograft and autograft fin-transplants, we compared the allorecognition immune responses of two pipefish species, with (Nerophis ophidion) and without (Syngnathus typhle) a functional MHC II. Transcriptome-wide assessments explored the immunological tolerance and potential compensatory measures occupying the role of the absent MHC II. Visual observations suggested a more acute rejection response in N. ophidion allografts compared with S. typhle allografts. Differentially expressed genes involved in innate immunity, angiogenesis and tissue recovery were identified among transplantees. The intriguing upregulation of the cytotoxic T-cell implicated gzma in S. typhle allografts, suggests a prominent MHC I related response, which may compensate for the MHC II and CD4 loss. MHC I related downregulation in N. ophidion autografts hints at an immunological tolerance related reaction. These findings may indicate alternative measures evolved to cope with the MHC II genomic loss enabling the maintenance of appropriate tolerance levels. This study provides intriguing insights into the immune and tissue recovery mechanisms associated with syngnathid transplantation, and can be a useful reference for future studies focusing on transplantation transcriptomics in non-model systems.
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Affiliation(s)
- Jamie Parker
- Marine Evolutionary Ecology, GEOMAR Helmholtz Centre for Ocean Research Kiel, D-24105, Kiel, Germany; Marine Evolutionary Biology, Christian-Albrechts-University, D-24118, Kiel, Germany.
| | - Olivia Roth
- Marine Evolutionary Ecology, GEOMAR Helmholtz Centre for Ocean Research Kiel, D-24105, Kiel, Germany; Marine Evolutionary Biology, Christian-Albrechts-University, D-24118, Kiel, Germany
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13
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Duncan HF, Kobayashi Y, Yamauchi Y, Quispe-Salcedo A, Chao Feng Z, Huang J, Partridge NC, Nakatani T, D’Armiento J, Shimizu E. The Critical Role of MMP13 in Regulating Tooth Development and Reactionary Dentinogenesis Repair Through the Wnt Signaling Pathway. Front Cell Dev Biol 2022; 10:883266. [PMID: 35531096 PMCID: PMC9068941 DOI: 10.3389/fcell.2022.883266] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2022] [Accepted: 03/14/2022] [Indexed: 12/20/2022] Open
Abstract
Matrix-metalloproteinase-13 (MMP13) is important for bone formation and remodeling; however, its role in tooth development remains unknown. To investigate this, MMP13-knockout (Mmp13−/−) mice were used to analyze phenotypic changes in the dentin–pulp complex, mineralization-associated marker-expression, and mechanistic interactions. Immunohistochemistry demonstrated high MMP13-expression in pulp-tissue, ameloblasts, odontoblasts, and dentin in developing WT-molars, which reduced in adults, with human-DPC cultures demonstrating a >2000-fold increase in Mmp13-expression during mineralization. Morphologically, Mmp13−/− molars displayed critical alterations in the dentin-phenotype, affecting dentin-tubule regularity, the odontoblast-palisade and predentin-definition with significantly reduced dentin volume (∼30% incisor; 13% molar), and enamel and dentin mineral-density. Reactionary-tertiary-dentin in response to injury was reduced at Mmp13−/− molar cusp-tips but with significantly more dystrophic pulpal mineralization in MMP13-null samples. Odontoblast differentiation-markers, nestin and DSP, reduced in expression after MMP13-loss in vivo, with reduced calcium deposition in MMP13-null DPC cultures. RNA-sequencing analysis of WT and Mmp13−/− pulp highlighted 5,020 transcripts to have significantly >2.0-fold change, with pathway-analysis indicating downregulation of the Wnt-signaling pathway, supported by reduced in vivo expression of the Wnt-responsive gene Axin2. Mmp13 interaction with Axin2 could be partly responsible for the loss of odontoblastic activity and alteration to the tooth phenotype and volume which is evident in this study. Overall, our novel findings indicate MMP13 as critical for tooth development and mineralization processes, highlighting mechanistic interaction with the Wnt-signaling pathway.
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Affiliation(s)
- Henry F. Duncan
- Division of Restorative Dentistry & Periodontology, Dublin Dental University Hospital, Trinity College Dublin, Dublin, Ireland
- *Correspondence: Henry F. Duncan, ; Emi Shimizu,
| | - Yoshifumi Kobayashi
- Department of Oral Biology, Rutgers School of Dental Medicine, Newark, NJ, United States
| | - Yukako Yamauchi
- Division of Restorative Dentistry & Periodontology, Dublin Dental University Hospital, Trinity College Dublin, Dublin, Ireland
| | | | - Zhi Chao Feng
- Department of Oral Biology, Rutgers School of Dental Medicine, Newark, NJ, United States
| | - Jia Huang
- Department of Oral Biology, Rutgers School of Dental Medicine, Newark, NJ, United States
| | - Nicola C. Partridge
- Department of Molecular Pathobiology, New York University Dentistry, New York, NY, United States
| | - Teruyo Nakatani
- Department of Molecular Pathobiology, New York University Dentistry, New York, NY, United States
| | - Jeanine D’Armiento
- Department of Physiology and Cellular Biophysics, Columbia University Medical Centre, New York, NY, United States
| | - Emi Shimizu
- Department of Oral Biology, Rutgers School of Dental Medicine, Newark, NJ, United States
- *Correspondence: Henry F. Duncan, ; Emi Shimizu,
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14
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Liu R, Imangali N, Ethiraj LP, Carney TJ, Winkler C. Transcriptome Profiling of Osteoblasts in a Medaka ( Oryzias latipes) Osteoporosis Model Identifies Mmp13b as Crucial for Osteoclast Activation. Front Cell Dev Biol 2022; 10:775512. [PMID: 35281094 PMCID: PMC8911226 DOI: 10.3389/fcell.2022.775512] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2021] [Accepted: 01/14/2022] [Indexed: 11/13/2022] Open
Abstract
Matrix metalloproteases (MMPs) play crucial roles in extracellular matrix (ECM) modulation during osteoclast-driven bone remodeling. In the present study, we used transcriptome profiling of bone cells in a medaka model for osteoporosis and bone regeneration to identify factors critical for bone remodeling and homeostasis. This identified mmp13b, which was strongly expressed in osteoblast progenitors and upregulated under osteoporotic conditions and during regeneration of bony fin rays. To characterize the role of mmp13b in bone remodeling, we generated medaka mmp13b mutants by CRISPR/Cas9. We found that mmp13b mutants form normal numbers of osteoblasts and osteoclasts. However, osteoclast activity was severely impaired under osteoporotic conditions. In mmp13b mutants and embryos treated with the MMP13 inhibitor CL-82198, unmineralized collagens and mineralized bone matrix failed to be degraded. In addition, the dynamic migratory behavior of activated osteoclasts was severely affected in mmp13b mutants. Expression analysis showed that maturation genes were downregulated in mmp13b deficient osteoclasts suggesting that they remain in an immature and non-activated state. We also found that fin regeneration was delayed in mmp13b mutants with a concomitant alteration of the ECM and reduced numbers of osteoblast progenitors in regenerating joint regions. Together, our findings suggest that osteoblast-derived Mmp13b alters the bone ECM to allow the maturation and activation of osteoclasts during bone remodeling in a paracrine manner. Mmp13b-induced ECM alterations are also required to facilitate osteoblast progenitor recruitment and full regeneration of bony fin rays.
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Affiliation(s)
- Ranran Liu
- Department of Biological Sciences and Centre for Bioimaging Sciences, National University of Singapore, Singapore, Singapore
| | - Nurgul Imangali
- Department of Biological Sciences and Centre for Bioimaging Sciences, National University of Singapore, Singapore, Singapore
| | - Lalith Prabha Ethiraj
- Lee Kong Chian School of Medicine, Nanyang Technological University, Singapore, Singapore
| | - Tom James Carney
- Lee Kong Chian School of Medicine, Nanyang Technological University, Singapore, Singapore
| | - Christoph Winkler
- Department of Biological Sciences and Centre for Bioimaging Sciences, National University of Singapore, Singapore, Singapore
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15
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RhoA within myofibers controls satellite cell microenvironment to allow hypertrophic growth. iScience 2022; 25:103616. [PMID: 35106464 PMCID: PMC8786647 DOI: 10.1016/j.isci.2021.103616] [Citation(s) in RCA: 12] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2021] [Revised: 08/02/2021] [Accepted: 12/09/2021] [Indexed: 12/13/2022] Open
Abstract
Adult skeletal muscle is a plastic tissue that can adapt its size to workload. Here, we show that RhoA within myofibers is needed for overload-induced hypertrophy by controlling satellite cell (SC) fusion to the growing myofibers without affecting protein synthesis. At the molecular level, we demonstrate that RhoA controls in a cell autonomous manner Erk1/2 activation and the expressions of extracellular matrix (ECM) regulators such as Mmp9/Mmp13/Adam8 and macrophage chemo-attractants such as Ccl3/Cx3cl1. Their decreased expression in RhoA mutants is associated with ECM and fibrillar collagen disorganization and lower macrophage infiltration. Moreover, matrix metalloproteinases inhibition and macrophage depletion in controls phenocopied the altered growth of RhoA mutants while having no effect in mutants showing that their action is RhoA-dependent. These findings unravel the implication of RhoA within myofibers, in the building of a permissive microenvironment for muscle hypertrophic growth and for SC accretion through ECM remodeling and inflammatory cell recruitment. RhoA within myofibers controls SC fusion and muscle hypertrophic growth RhoA controls the expression of Mmps and of macrophage chemoattractants (Ccl3/Cx3cl1) RhoA controls ECM remodeling and macrophage recruitment upon hypertrophy Mmp inhibition and macrophage depletion phenocopy the blunted growth of RhoA mutant muscles
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16
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Acute and Delayed Effects of Time-Matched Very Short "All Out" Efforts in Concentric vs. Eccentric Cycling. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2021; 18:ijerph18157968. [PMID: 34360257 PMCID: PMC8345736 DOI: 10.3390/ijerph18157968] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/12/2021] [Revised: 07/20/2021] [Accepted: 07/22/2021] [Indexed: 12/30/2022]
Abstract
BACKGROUND To the authors' knowledge, there have been no studies comparing the acute responses to "all out" efforts in concentric (isoinertial) vs. eccentric (isovelocity) cycling. METHODS After two familiarization sessions, 12 physically active men underwent the experimental protocols consisting of a 2-min warm-up and 8 maximal efforts of 5 s, separated by 55 s of active recovery at 80 rpm, in concentric vs. eccentric cycling. Comparisons between protocols were conducted during, immediately after, and 24-h post-sessions. RESULTS Mechanical (Work: 82,824 ± 6350 vs. 60,602 ± 8904 J) and cardiometabolic responses (mean HR: 68.8 ± 6.6 vs. 51.3 ± 5.7% HRmax, lactate: 4.9 ± 2.1 vs. 1.8 ± 0.6 mmol/L) were larger in concentric cycling (p < 0.001). The perceptual responses to both protocols were similarly low. Immediately after concentric cycling, vertical jump was potentiated (p = 0.028). Muscle soreness (VAS; p = 0.016) and thigh circumference (p = 0.045) were slightly increased only 24-h after eccentric cycling. Serum concentrations of CK, BAG3, and MMP-13 did not change significantly post-exercise. CONCLUSIONS These results suggest the appropriateness of the eccentric cycling protocol used as a time-efficient (i.e., ~60 kJ in 10 min) and safe (i.e., without exercise-induced muscle damage) alternative to be used with different populations in future longitudinal interventions.
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17
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Diao Z, Matsui T, Funaba M. Stimulation of myogenesis by ascorbic acid and capsaicin. Biochem Biophys Res Commun 2021; 568:83-88. [PMID: 34198164 DOI: 10.1016/j.bbrc.2021.06.067] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2021] [Accepted: 06/19/2021] [Indexed: 11/28/2022]
Abstract
Myogenesis is a complex process regulated by several factors. This study evaluated the functional interaction between vitamin C and a high dose of capsaicin (a potential endoplasmic reticulum (ER) stress inducer) on myogenesis. After the induction of differentiation, treatment with ascorbic acid or ascorbic acid phosphate (AsAp) alone had minimal effects on myogenesis in C2C12 cells. However, treatment with capsaicin (300 μM) in undifferentiated C2C12 cells increased the expression levels of genes related to ER stress as well as oxidative stress. Myogenesis was effectively enhanced in C2C12 cells treated with a combination of capsaicin (300 μM) for one day before differentiation stimulation and AsAp for four days post-differentiation; subsequently, thick and long myotubes formed, and the expression levels of myosin heavy chain (MYH) 1/2 and Myh1, Myh4, and Myh7 increased. Considering that mild ER stress stimulates myogenesis, AsAp may elicit myogenesis through the alleviation of oxidative stress-induced negative effects in capsaicin-pretreated cells. The enhanced expression of Myh1 and Myh4 coincided with the expression of Col1a1, a type I collagen, suggesting that the fine-tuning of the myogenic cell microenvironment is responsible for efficient myogenesis. Our results indicate that vitamin C is a potential stimulator of myogenesis in cells, depending on the cell context.
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Affiliation(s)
- Zhicheng Diao
- Division of Applied Biosciences, Graduate School of Agriculture, Kyoto University, Kyoto, 606-8502, Japan
| | - Tohru Matsui
- Division of Applied Biosciences, Graduate School of Agriculture, Kyoto University, Kyoto, 606-8502, Japan
| | - Masayuki Funaba
- Division of Applied Biosciences, Graduate School of Agriculture, Kyoto University, Kyoto, 606-8502, Japan.
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18
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Rice JC, Weekley BH, Kanholm T, Chen Z, Lee S, Fernandez DJ, Abrahamson R, Castaldi A, Borok Z, Dynlacht BD, An W. MMP-2 is a novel histone H3 N-terminal protease necessary for myogenic gene activation. Epigenetics Chromatin 2021; 14:23. [PMID: 34001241 PMCID: PMC8130154 DOI: 10.1186/s13072-021-00398-4] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2021] [Accepted: 05/06/2021] [Indexed: 12/26/2022] Open
Abstract
BACKGROUND Selective proteolysis of the histone H3 N-terminal tail (H3NT) is frequently observed during eukaryotic development, generating a cleaved histone H3 (H3cl) product within a small, but significant, portion of the genome. Although increasing evidence supports a regulatory role for H3NT proteolysis in gene activation, the nuclear H3NT proteases and the biological significance of H3NT proteolysis remain largely unknown. RESULTS In this study, established cell models of skeletal myogenesis were leveraged to investigate H3NT proteolysis. These cells displayed a rapid and progressive accumulation of a single H3cl product within chromatin during myoblast differentiation. Using conventional approaches, we discovered that the canonical extracellular matrix (ECM) protease, matrix metalloproteinase 2 (MMP-2), is the principal H3NT protease of myoblast differentiation that cleaves H3 between K18-Q19. Gelatin zymography demonstrated progressive increases in nuclear MMP-2 activity, concomitant with H3cl accumulation, during myoblast differentiation. RNAi-mediated depletion of MMP-2 impaired H3NT proteolysis and resulted in defective myogenic gene activation and myoblast differentiation. Supplementation of MMP-2 ECM activity in MMP-2-depleted cells was insufficient to rescue defective H3NT proteolysis and myogenic gene activation. CONCLUSIONS This study revealed that MMP-2 is a novel H3NT protease and the principal H3NT protease of myoblast differentiation. The results indicate that myogenic signaling induces MMP-2-dependent H3NT proteolysis at early stages of myoblast differentiation. Importantly, the results support the necessity of nuclear MMP-2 H3NT protease activity, independent of MMP-2 activity in the ECM, for myogenic gene activation and proficient myoblast differentiation.
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Affiliation(s)
- Judd C Rice
- Department of Biochemistry and Molecular Medicine, Norris Comprehensive Cancer Center, University of Southern California Keck School of Medicine, 1450 Biggy Street, HNRT 6506, Los Angeles, CA, 90033, USA.
| | - Benjamin H Weekley
- Department of Biochemistry and Molecular Medicine, Norris Comprehensive Cancer Center, University of Southern California Keck School of Medicine, 1450 Biggy Street, HNRT 6506, Los Angeles, CA, 90033, USA
| | - Tomas Kanholm
- Department of Biochemistry and Molecular Medicine, Norris Comprehensive Cancer Center, University of Southern California Keck School of Medicine, 1450 Biggy Street, HNRT 6506, Los Angeles, CA, 90033, USA
| | - Zhihui Chen
- Department of Biochemistry and Molecular Medicine, Norris Comprehensive Cancer Center, University of Southern California Keck School of Medicine, 1450 Biggy Street, HNRT 6506, Los Angeles, CA, 90033, USA
| | - Sunyoung Lee
- Department of Biochemistry and Molecular Medicine, Norris Comprehensive Cancer Center, University of Southern California Keck School of Medicine, 1450 Biggy Street, HNRT 6506, Los Angeles, CA, 90033, USA
| | - Daniel J Fernandez
- Department of Molecular Microbiology and Immunology, Norris Comprehensive Cancer Center, University of Southern California Keck School of Medicine, Los Angeles, CA, 90033, USA
| | - Rachel Abrahamson
- Department of Biochemistry and Molecular Medicine, Norris Comprehensive Cancer Center, University of Southern California Keck School of Medicine, 1450 Biggy Street, HNRT 6506, Los Angeles, CA, 90033, USA
| | - Alessandra Castaldi
- Hastings Center for Pulmonary Research and Division of Pulmonary, Critical Care and Sleep Medicine, Department of Medicine, Keck School of Medicine, University of Southern California, Los Angeles, CA, 90033, USA
| | - Zea Borok
- Department of Biochemistry and Molecular Medicine, Norris Comprehensive Cancer Center, University of Southern California Keck School of Medicine, 1450 Biggy Street, HNRT 6506, Los Angeles, CA, 90033, USA
- Hastings Center for Pulmonary Research and Division of Pulmonary, Critical Care and Sleep Medicine, Department of Medicine, Keck School of Medicine, University of Southern California, Los Angeles, CA, 90033, USA
| | - Brian D Dynlacht
- Department of Pathology and Cancer Institute, NYU School of Medicine,, New York, NY, 10016, USA
| | - Woojin An
- Department of Biochemistry and Molecular Medicine, Norris Comprehensive Cancer Center, University of Southern California Keck School of Medicine, 1450 Biggy Street, HNRT 6506, Los Angeles, CA, 90033, USA
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Kok HJ, Barton ER. Actions and interactions of IGF-I and MMPs during muscle regeneration. Semin Cell Dev Biol 2021; 119:11-22. [PMID: 33962867 DOI: 10.1016/j.semcdb.2021.04.018] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2021] [Revised: 04/04/2021] [Accepted: 04/19/2021] [Indexed: 12/11/2022]
Abstract
Muscle regeneration requires the coordination of several factors to mobilize satellite cells and macrophages, remodel the extracellular matrix surrounding muscle fibers, and repair existing and/or form new muscle fibers. In this review, we focus on insulin-like growth factor I and the matrix metalloproteinases, which are secreted proteins that act on cells and the matrix to resolve damage. While their actions appear independent, their interactions occur at the transcriptional and post-translational levels to promote feed-forward activation of each other. Together, these proteins assist at virtually every step of the repair process, and contribute significantly to muscle regenerative capacity.
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Affiliation(s)
- Hui Jean Kok
- Applied Physiology & Kinesiology, College of Health and Human Performance, University of Florida, 1864 Stadium Road, Gainesville, FL 32611, USA
| | - Elisabeth R Barton
- Applied Physiology & Kinesiology, College of Health and Human Performance, University of Florida, 1864 Stadium Road, Gainesville, FL 32611, USA.
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20
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Key Genes Regulating Skeletal Muscle Development and Growth in Farm Animals. Animals (Basel) 2021; 11:ani11030835. [PMID: 33809500 PMCID: PMC7999090 DOI: 10.3390/ani11030835] [Citation(s) in RCA: 106] [Impact Index Per Article: 35.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2021] [Revised: 03/08/2021] [Accepted: 03/12/2021] [Indexed: 12/14/2022] Open
Abstract
Simple Summary Skeletal muscle mass is an important economic trait, and muscle development and growth is a crucial factor to supply enough meat for human consumption. Thus, understanding (candidate) genes regulating skeletal muscle development is crucial for understanding molecular genetic regulation of muscle growth and can be benefit the meat industry toward the goal of increasing meat yields. During the past years, significant progress has been made for understanding these mechanisms, and thus, we decided to write a comprehensive review covering regulators and (candidate) genes crucial for muscle development and growth in farm animals. Detection of these genes and factors increases our understanding of muscle growth and development and is a great help for breeders to satisfy demands for meat production on a global scale. Abstract Farm-animal species play crucial roles in satisfying demands for meat on a global scale, and they are genetically being developed to enhance the efficiency of meat production. In particular, one of the important breeders’ aims is to increase skeletal muscle growth in farm animals. The enhancement of muscle development and growth is crucial to meet consumers’ demands regarding meat quality. Fetal skeletal muscle development involves myogenesis (with myoblast proliferation, differentiation, and fusion), fibrogenesis, and adipogenesis. Typically, myogenesis is regulated by a convoluted network of intrinsic and extrinsic factors monitored by myogenic regulatory factor genes in two or three phases, as well as genes that code for kinases. Marker-assisted selection relies on candidate genes related positively or negatively to muscle development and can be a strong supplement to classical selection strategies in farm animals. This comprehensive review covers important (candidate) genes that regulate muscle development and growth in farm animals (cattle, sheep, chicken, and pig). The identification of these genes is an important step toward the goal of increasing meat yields and improves meat quality.
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21
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Narayanan N, Calve S. Extracellular matrix at the muscle - tendon interface: functional roles, techniques to explore and implications for regenerative medicine. Connect Tissue Res 2021; 62:53-71. [PMID: 32856502 PMCID: PMC7718290 DOI: 10.1080/03008207.2020.1814263] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Abstract
The muscle-tendon interface is an anatomically specialized region that is involved in the efficient transmission of force from muscle to tendon. Due to constant exposure to loading, the interface is susceptible to injury. Current treatment methods do not meet the socioeconomic demands of reduced recovery time without compromising the risk of reinjury, requiring the need for developing alternative strategies. The extracellular matrix (ECM) present in muscle, tendon, and at the interface of these tissues consists of unique molecules that play significant roles in homeostasis and repair. Better, understanding the function of the ECM during development, injury, and aging has the potential to unearth critical missing information that is essential for accelerating the repair at the muscle-tendon interface. Recently, advanced techniques have emerged to explore the ECM for identifying specific roles in musculoskeletal biology. Simultaneously, there is a tremendous increase in the scope for regenerative medicine strategies to address the current clinical deficiencies. Advancements in ECM research can be coupled with the latest regenerative medicine techniques to develop next generation therapies that harness ECM for treating defects at the muscle-tendon interface. The current work provides a comprehensive review on the role of muscle and tendon ECM to provide insights about the role of ECM in the muscle-tendon interface and discusses the latest research techniques to explore the ECM to gathered information for developing regenerative medicine strategies.
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Affiliation(s)
- Naagarajan Narayanan
- Paul M. Rady Department of Mechanical Engineering, University of Colorado – Boulder, 1111 Engineering Drive, Boulder, Colorado 80309 – 0427
| | - Sarah Calve
- Paul M. Rady Department of Mechanical Engineering, University of Colorado – Boulder, 1111 Engineering Drive, Boulder, Colorado 80309 – 0427
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22
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Choi S, Ferrari G, Tedesco FS. Cellular dynamics of myogenic cell migration: molecular mechanisms and implications for skeletal muscle cell therapies. EMBO Mol Med 2020; 12:e12357. [PMID: 33210465 PMCID: PMC7721365 DOI: 10.15252/emmm.202012357] [Citation(s) in RCA: 24] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2020] [Revised: 08/02/2020] [Accepted: 08/28/2020] [Indexed: 12/14/2022] Open
Abstract
Directional cell migration is a critical process underlying morphogenesis and post-natal tissue regeneration. During embryonic myogenesis, migration of skeletal myogenic progenitors is essential to generate the anlagen of limbs, diaphragm and tongue, whereas in post-natal skeletal muscles, migration of muscle satellite (stem) cells towards regions of injury is necessary for repair and regeneration of muscle fibres. Additionally, safe and efficient migration of transplanted cells is critical in cell therapies, both allogeneic and autologous. Although various myogenic cell types have been administered intramuscularly or intravascularly, functional restoration has not been achieved yet in patients with degenerative diseases affecting multiple large muscles. One of the key reasons for this negative outcome is the limited migration of donor cells, which hinders the overall cell engraftment potential. Here, we review mechanisms of myogenic stem/progenitor cell migration during skeletal muscle development and post-natal regeneration. Furthermore, strategies utilised to improve migratory capacity of myogenic cells are examined in order to identify potential treatments that may be applied to future transplantation protocols.
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Affiliation(s)
- SungWoo Choi
- Department of Cell and Developmental Biology, University College London, London, UK.,The Francis Crick Institute, London, UK
| | - Giulia Ferrari
- Department of Cell and Developmental Biology, University College London, London, UK
| | - Francesco Saverio Tedesco
- Department of Cell and Developmental Biology, University College London, London, UK.,The Francis Crick Institute, London, UK.,Dubowitz Neuromuscular Centre, Great Ormond Street Institute of Child Health, University College London, London, UK
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23
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Smith LR, Kok HJ, Zhang B, Chung D, Spradlin RA, Rakoczy KD, Lei H, Boesze-Battaglia K, Barton ER. Matrix Metalloproteinase 13 from Satellite Cells is Required for Efficient Muscle Growth and Regeneration. Cell Physiol Biochem 2020; 54:333-353. [PMID: 32275813 DOI: 10.33594/000000223] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 03/25/2020] [Indexed: 12/12/2022] Open
Abstract
BACKGROUND/AIMS Cell migration and extracellular matrix remodeling underlie normal mammalian development and growth as well as pathologic tumor invasion. Skeletal muscle is no exception, where satellite cell migration replenishes nuclear content in damaged tissue and extracellular matrix reforms during regeneration. A key set of enzymes that regulate these processes are matrix metalloproteinases (MMP)s. The collagenase MMP-13 is transiently upregulated during muscle regeneration, but its contribution to damage resolution is unknown. The purpose of this work was to examine the importance of MMP-13 in muscle regeneration and growth in vivo and to delineate a satellite cell specific role for this collagenase. METHODS Mice with total and satellite cell specific Mmp13 deletion were utilized to determine the importance of MMP-13 for postnatal growth, regeneration after acute injury, and in chronic injury from a genetic cross with dystrophic (mdx) mice. We also evaluated insulin-like growth factor 1 (IGF-1) mediated hypertrophy in the presence and absence of MMP-13. We employed live-cell imaging and 3D migration measurements on primary myoblasts obtained from these animals. Outcome measures included muscle morphology and function. RESULTS Under basal conditions, Mmp13-/- mice did not exhibit histological or functional deficits in muscle. However, following acute injury, regeneration was impaired at 11 and 14 days post injury. Muscle hypertrophy caused by increased IGF-1 was blunted with minimal satellite cell incorporation in the absence of MMP-13. Mmp13-/- primary myoblasts displayed reduced migratory capacity in 2D and 3D, while maintaining normal proliferation and differentiation. Satellite cell specific deletion of MMP-13 recapitulated the effects of global MMP-13 ablation on muscle regeneration, growth and myoblast movement. CONCLUSION These results show that satellite cells provide an essential autocrine source of MMP-13, which not only regulates their migration, but also supports postnatal growth and resolution of acute damage.
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Affiliation(s)
- Lucas R Smith
- Anatomy and Cell Biology, School of Dental Medicine, University of Pennsylvania, Philadelphia, PA, USA.,Neurobiology, Physiology & Behavior, Physical Medicine & Rehabilitation, University of California, Davis, CA, USA
| | - Hui Jean Kok
- Applied Physiology and Kinesiology, College of Health and Human Performance, University of Florida, Gainesville, FL, USA
| | - Boshi Zhang
- Anatomy and Cell Biology, School of Dental Medicine, University of Pennsylvania, Philadelphia, PA, USA
| | - Du Chung
- Anatomy and Cell Biology, School of Dental Medicine, University of Pennsylvania, Philadelphia, PA, USA
| | - Ray A Spradlin
- Applied Physiology and Kinesiology, College of Health and Human Performance, University of Florida, Gainesville, FL, USA
| | - Kyla D Rakoczy
- Applied Physiology and Kinesiology, College of Health and Human Performance, University of Florida, Gainesville, FL, USA
| | - Hanqin Lei
- Anatomy and Cell Biology, School of Dental Medicine, University of Pennsylvania, Philadelphia, PA, USA.,Applied Physiology and Kinesiology, College of Health and Human Performance, University of Florida, Gainesville, FL, USA
| | | | - Elisabeth R Barton
- Anatomy and Cell Biology, School of Dental Medicine, University of Pennsylvania, Philadelphia, PA, USA, .,Applied Physiology and Kinesiology, College of Health and Human Performance, University of Florida, Gainesville, FL, USA
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24
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PAI-1, the Plasminogen System, and Skeletal Muscle. Int J Mol Sci 2020; 21:ijms21197066. [PMID: 32993026 PMCID: PMC7582753 DOI: 10.3390/ijms21197066] [Citation(s) in RCA: 30] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2020] [Revised: 09/21/2020] [Accepted: 09/23/2020] [Indexed: 12/14/2022] Open
Abstract
The plasminogen system is a critical proteolytic system responsible for the remodeling of the extracellular matrix (ECM). The master regulator of the plasminogen system, plasminogen activator inhibitor-1 (PAI-1), has been implicated for its role in exacerbating various disease states not only through the accumulation of ECM (i.e., fibrosis) but also its role in altering cell fate/behaviour. Examination of PAI-1 has extended through various tissues and cell-types with recent investigations showing its presence in skeletal muscle. In skeletal muscle, the role of this protein has been implicated throughout the regeneration process, and in skeletal muscle pathologies (muscular dystrophy, diabetes, and aging-driven pathology). Needless to say, the complete function of this protein in skeletal muscle has yet to be fully elucidated. Given the importance of skeletal muscle in maintaining overall health and quality of life, it is critical to understand the alterations—particularly in PAI-1—that occur to negatively impact this organ. Thus, we provide a comprehensive review of the importance of PAI-1 in skeletal muscle health and function. We aim to shed light on the relevance of this protein in skeletal muscle and propose potential therapeutic approaches to aid in the maintenance of skeletal muscle health.
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25
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Implications of Skeletal Muscle Extracellular Matrix Remodeling in Metabolic Disorders: Diabetes Perspective. Int J Mol Sci 2020; 21:ijms21113845. [PMID: 32481704 PMCID: PMC7312063 DOI: 10.3390/ijms21113845] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2020] [Revised: 05/23/2020] [Accepted: 05/25/2020] [Indexed: 12/13/2022] Open
Abstract
The extracellular matrix (ECM) provides a scaffold for cells, controlling biological processes and providing structural as well as mechanical support to surrounding cells. Disruption of ECM homeostasis results in several pathological conditions. Skeletal muscle ECM is a complex network comprising collagens, proteoglycans, glycoproteins, and elastin. Recent therapeutic approaches targeting ECM remodeling have been extensively deliberated. Various ECM components are typically found to be augmented in the skeletal muscle of obese and/or diabetic humans. Skeletal muscle ECM remodeling is thought to be a feature of the pathogenic milieu allied with metabolic dysregulation, obesity, and eventual diabetes. This narrative review explores the current understanding of key components of skeletal muscle ECM and their specific roles in the regulation of metabolic diseases. Additionally, we discuss muscle-specific integrins and their role in the regulation of insulin sensitivity. A better understanding of the importance of skeletal muscle ECM remodeling, integrin signaling, and other factors that regulate insulin activity may help in the development of novel therapeutics for managing diabetes and other metabolic disorders.
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26
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Liu X, Gao Y, Long X, Hayashi T, Mizuno K, Hattori S, Fujisaki H, Ogura T, Wang DO, Ikejima T. Type I collagen promotes the migration and myogenic differentiation of C2C12 myoblastsviathe release of interleukin-6 mediated by FAK/NF-κB p65 activation. Food Funct 2020; 11:328-338. [DOI: 10.1039/c9fo01346f] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Abstract
Type I collagen has the potential to promote the migration and differentiation of C2C12myoblastviaIL-6 release that was mediated by FAK/NF-κB pathway.
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Affiliation(s)
- Xiaoling Liu
- Wuya College of Innovation
- Shenyang Pharmaceutical University
- Shenyang, 110016
- China
| | - Yanfang Gao
- Wuya College of Innovation
- Shenyang Pharmaceutical University
- Shenyang, 110016
- China
| | - Xinyu Long
- Wuya College of Innovation
- Shenyang Pharmaceutical University
- Shenyang, 110016
- China
| | - Toshihiko Hayashi
- Wuya College of Innovation
- Shenyang Pharmaceutical University
- Shenyang, 110016
- China
- Department of Chemistry and Life Science
| | | | | | | | | | - Dan Ohtan Wang
- Wuya College of Innovation
- Shenyang Pharmaceutical University
- Shenyang, 110016
- China
| | - Takashi Ikejima
- Wuya College of Innovation
- Shenyang Pharmaceutical University
- Shenyang, 110016
- China
- Key Laboratory of Computational Chemistry-Based Natural Antitumor Drug Research & Development
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27
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Lu S, Xiong Q, Du K, Gan X, Wang X, Yang L, Wang Y, Ge F, He S. Comparative iTRAQ proteomics revealed proteins associated with lobed fin regeneration in Bichirs. Proteome Sci 2019; 17:6. [PMID: 31832023 PMCID: PMC6869209 DOI: 10.1186/s12953-019-0153-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2018] [Accepted: 10/09/2019] [Indexed: 11/23/2022] Open
Abstract
Background Polypterus senegalus can fully regenerate its pectoral lobed fins, including a complex endoskeleton, with remarkable precision. However, despite the enormous potential of this species for use in medical research, its regeneration mechanisms remain largely unknown. Methods To identify the differentially expressed proteins (DEPs) during the early stages of lobed fin regeneration in P. senegalus, we performed a differential proteomic analysis using isobaric tag for relative and absolute quantitation (iTRAQ) approach based quantitative proteome from the pectoral lobed fins at 3 time points. Furthermore, we validated the changes in protein expression with multiple-reaction monitoring (MRM) analysis. Results The experiment yielded a total of 3177 proteins and 15,091 unique peptides including 1006 non-redundant (nr) DEPs. Of these, 592 were upregulated while 349 were downregulated after lobed fin amputation when compared to the original tissue. Bioinformatics analyses showed that the DEPs were mainly associated with Ribosome and RNA transport, metabolic, ECM-receptor interaction, Golgi and endoplasmic reticulum, DNA replication, and Regulation of actin cytoskeleton. Conclusions To our knowledge, this is the first proteomic research to investigate alterations in protein levels and affected pathways in bichirs’ lobe-fin/limb regeneration. In addition, our study demonstrated a highly dynamic regulation during lobed fin regeneration in P. senegalus. These results not only provide a comprehensive dataset on differentially expressed proteins during the early stages of lobe-fin/limb regeneration but also advance our understanding of the molecular mechanisms underlying lobe-fin/limb regeneration.
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Affiliation(s)
- Suxiang Lu
- 1Key Laboratory of Aquatic Biodiversity and Conservation of the Chinese Academy of Sciences, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan, 430072 Hubei China.,2Present address: Medical College of Pingdingshan University, Pingdingshan, 467000 Henan Province China
| | - Qian Xiong
- 3Key Laboratory of Algal Biology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan, 430072 Hubei China
| | - Kang Du
- 1Key Laboratory of Aquatic Biodiversity and Conservation of the Chinese Academy of Sciences, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan, 430072 Hubei China
| | - Xiaoni Gan
- 1Key Laboratory of Aquatic Biodiversity and Conservation of the Chinese Academy of Sciences, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan, 430072 Hubei China
| | - Xuzhen Wang
- 1Key Laboratory of Aquatic Biodiversity and Conservation of the Chinese Academy of Sciences, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan, 430072 Hubei China
| | - Liandong Yang
- 1Key Laboratory of Aquatic Biodiversity and Conservation of the Chinese Academy of Sciences, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan, 430072 Hubei China
| | - Ying Wang
- 1Key Laboratory of Aquatic Biodiversity and Conservation of the Chinese Academy of Sciences, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan, 430072 Hubei China
| | - Feng Ge
- 3Key Laboratory of Algal Biology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan, 430072 Hubei China
| | - Shunping He
- 1Key Laboratory of Aquatic Biodiversity and Conservation of the Chinese Academy of Sciences, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan, 430072 Hubei China
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28
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Skeletal muscle fibrosis: an overview. Cell Tissue Res 2018; 375:575-588. [DOI: 10.1007/s00441-018-2955-2] [Citation(s) in RCA: 92] [Impact Index Per Article: 15.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2018] [Accepted: 10/11/2018] [Indexed: 12/20/2022]
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29
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Mahdy MAA. Glycerol-induced injury as a new model of muscle regeneration. Cell Tissue Res 2018; 374:233-241. [DOI: 10.1007/s00441-018-2846-6] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2018] [Accepted: 04/24/2018] [Indexed: 01/15/2023]
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30
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Why is Skeletal Muscle Regeneration Impaired after Myonecrosis Induced by Viperid Snake Venoms? Toxins (Basel) 2018; 10:toxins10050182. [PMID: 29723952 PMCID: PMC5983238 DOI: 10.3390/toxins10050182] [Citation(s) in RCA: 36] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2018] [Revised: 04/22/2018] [Accepted: 04/25/2018] [Indexed: 12/12/2022] Open
Abstract
Skeletal muscle regeneration after myonecrosis involves the activation, proliferation and fusion of myogenic cells, and a coordinated inflammatory response encompassing phagocytosis of necrotic cell debris, and the concerted synthesis of cytokines and growth factors. Myonecrosis often occurs in snakebite envenomings. In the case of venoms that cause myotoxicity without affecting the vasculature, such as those of many elapid snakes, regeneration proceeds successfully. In contrast, in envenomings by most viperid snakes, which affect the vasculature and extracellular matrix in addition to muscle fibers, regeneration is largely impaired and, therefore, the muscle mass is reduced and replaced by fibro-adipose tissue. This review discusses possible causes for such poor regenerative outcome including: (a) damage to muscle microvasculature, which causes tissue hypoxia and affects the inflammatory response and the timely removal of necrotic tissue; (b) damage to intramuscular nerves, which results in atrophy of regenerating fibers; (c) degradation of muscle cell basement membrane, compromising the spatial niche for proliferating myoblasts; (d) widespread degradation of the extracellular matrix; and (e) persistence of venom components in the damaged tissue, which may affect myogenic cells at critical points in the regenerative process. Understanding the causes of poor muscle regeneration may pave the way for the development of novel therapeutic interventions aimed at fostering the regenerative process in envenomed patients.
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31
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Alameddine HS, Morgan JE. Matrix Metalloproteinases and Tissue Inhibitor of Metalloproteinases in Inflammation and Fibrosis of Skeletal Muscles. J Neuromuscul Dis 2018; 3:455-473. [PMID: 27911334 PMCID: PMC5240616 DOI: 10.3233/jnd-160183] [Citation(s) in RCA: 69] [Impact Index Per Article: 11.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
In skeletal muscles, levels and activity of Matrix MetalloProteinases (MMPs) and Tissue Inhibitors of MetalloProteinases (TIMPs) have been involved in myoblast migration, fusion and various physiological and pathological remodeling situations including neuromuscular diseases. This has opened perspectives for the use of MMPs' overexpression to improve the efficiency of cell therapy in muscular dystrophies and resolve fibrosis. Alternatively, inhibition of individual MMPs in animal models of muscular dystrophies has provided evidence of beneficial, dual or adverse effects on muscle morphology or function. We review here the role played by MMPs/TIMPs in skeletal muscle inflammation and fibrosis, two major hurdles that limit the success of cell and gene therapy. We report and analyze the consequences of genetic or pharmacological modulation of MMP levels on the inflammation of skeletal muscles and their repair in light of experimental findings. We further discuss how the interplay between MMPs/TIMPs levels, cytokines/chemokines, growth factors and permanent low-grade inflammation favor cellular and molecular modifications resulting in fibrosis.
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Affiliation(s)
- Hala S Alameddine
- Institut de Myologie, Groupe Hospitalier Pitié-Salpêtrière, boulevard de l'Hôpital, 75651 Paris Cedex 13, France
| | - Jennifer E Morgan
- The Dubowitz Neuromuscular Centre, Molecular Neurosciences Section, Developmental Neurosciences Programme, UCL Great Ormond Street Institute of Child Health, 30 Guilford Street, London, UK
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32
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Mancini A, Campagna F, Amodio P, Tuohy KM. Gut : liver : brain axis: the microbial challenge in the hepatic encephalopathy. Food Funct 2018; 9:1373-1388. [PMID: 29485654 DOI: 10.1039/c7fo01528c] [Citation(s) in RCA: 48] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
Hepatic encephalopathy (HE) is a debilitating neuropsychiatric condition often associated with acute liver failure or cirrhosis. Advanced liver diseases are characterized by a leaky gut and systemic inflammation. There is strong evidence that the pathogenesis of HE is linked to a dysbiotic gut microbiota and to harmful microbial by-products, such as ammonia, indoles, oxindoles and endotoxins. Increased concentrations of these toxic metabolites together with the inability of the diseased liver to clear such products is thought to play an important patho-ethiological role. Current first line clinical treatments target microbiota dysbiosis by decreasing the counts of pathogenic bacteria, blood endotoxemia and ammonia levels. This review will focus on the role of the gut microbiota and its metabolism in HE and advanced cirrhosis. It will critically assess data from different clinical trials measuring the efficacy of the prebiotic lactulose, the probiotic VSL#3 and the antibiotic rifaximin in treating HE and advanced cirrhosis, through gut microbiota modulation. Additionally data from Randomised Controlled Trials using pre-, pro- and synbiotic will be also considered by reporting meta-analysis studies. The large amount of existing data showed that HE is a clear example of how an altered gut microbiota homeostasis can influence and impact on physiological functions outside the intestine, with implication for host health at the systems level. Nevertheless, a strong effort should be made to increase the information on gut microbiota ecology and its metabolic function in liver diseases and HE.
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Affiliation(s)
- Andrea Mancini
- Department of Food Quality and Nutrition, Research and Innovation Centre, Fondazione Edmund Mach, 38010 San Michele all'Adige, Trento, Italy.
| | - Francesca Campagna
- Department of Medicine (DIMED), University of Padova, 35128 Padova, Italy
| | - Piero Amodio
- Department of Medicine (DIMED), University of Padova, 35128 Padova, Italy
| | - Kieran M Tuohy
- Department of Food Quality and Nutrition, Research and Innovation Centre, Fondazione Edmund Mach, 38010 San Michele all'Adige, Trento, Italy.
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33
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Smith LR, Barton ER. Regulation of fibrosis in muscular dystrophy. Matrix Biol 2018; 68-69:602-615. [PMID: 29408413 DOI: 10.1016/j.matbio.2018.01.014] [Citation(s) in RCA: 51] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2017] [Revised: 01/15/2018] [Accepted: 01/16/2018] [Indexed: 02/08/2023]
Abstract
The production of force and power are inherent properties of skeletal muscle, and regulated by contractile proteins within muscle fibers. However, skeletal muscle integrity and function also require strong connections between muscle fibers and their extracellular matrix (ECM). A well-organized and pliant ECM is integral to muscle function and the ability for many different cell populations to efficiently migrate through ECM is critical during growth and regeneration. For many neuromuscular diseases, genetic mutations cause disruption of these cytoskeletal-ECM connections, resulting in muscle fragility and chronic injury. Ultimately, these changes shift the balance from myogenic pathways toward fibrogenic pathways, culminating in the loss of muscle fibers and their replacement with fatty-fibrotic matrix. Hence a common pathological hallmark of muscular dystrophy is prominent fibrosis. This review will cover the salient features of muscular dystrophy pathogenesis, highlight the signals and cells that are important for myogenic and fibrogenic actions, and discuss how fibrosis alters the ECM of skeletal muscle, and the consequences of fibrosis in developing therapies.
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Affiliation(s)
- Lucas R Smith
- Department of Chemical and Biomolecular Engineering, University of Pennsylvania, Philadelphia, PA, United States
| | - Elisabeth R Barton
- Department of Applied Physiology and Kinesiology, University of Florida, Gainesville, FL, United States.
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34
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Li EW, McKee-Muir OC, Gilbert PM. Cellular Biomechanics in Skeletal Muscle Regeneration. Curr Top Dev Biol 2018; 126:125-176. [DOI: 10.1016/bs.ctdb.2017.08.007] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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35
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[Molecular mechanism of sarcopenia]. Nihon Ronen Igakkai Zasshi 2018; 55:13-24. [PMID: 29503355 DOI: 10.3143/geriatrics.55.13] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
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36
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Lei C, Dong Z, Wan J, Xiao X, Lu F, Wang B. Transferring the exudate in the tissue engineering chamber as a trigger to incubate large amount adipose tissue in remote area. J Tissue Eng Regen Med 2017; 12:e1549-e1558. [DOI: 10.1002/term.2580] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2017] [Revised: 08/21/2017] [Accepted: 09/23/2017] [Indexed: 01/26/2023]
Affiliation(s)
- Chen Lei
- Department of Plastic and Cosmetic Surgery, Nanfang HospitalSouthern Medical University Guang Zhou Guang Dong P.R. China
- Department of Plastic and Cosmetic SurgeryThe First Affiliated Hospital of Fujian Medical University Fuzhou Fujian P.R. China
| | - Ziqing Dong
- Department of Plastic and Cosmetic Surgery, Nanfang HospitalSouthern Medical University Guang Zhou Guang Dong P.R. China
| | - Jinlin Wan
- Department of Plastic and Cosmetic Surgery, Nanfang HospitalSouthern Medical University Guang Zhou Guang Dong P.R. China
| | - Xiaolian Xiao
- Department of Plastic and Cosmetic Surgery, Nanfang HospitalSouthern Medical University Guang Zhou Guang Dong P.R. China
| | - Feng Lu
- Department of Plastic and Cosmetic Surgery, Nanfang HospitalSouthern Medical University Guang Zhou Guang Dong P.R. China
| | - Biao Wang
- Department of Plastic and Cosmetic SurgeryThe First Affiliated Hospital of Fujian Medical University Fuzhou Fujian P.R. China
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37
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Liu X, Ravishankar B, Ning A, Liu M, Kim HT, Feeley BT. Knocking-out matrix metalloproteinase-13 exacerbates rotator cuff muscle fatty infiltration. Muscles Ligaments Tendons J 2017; 7:202-207. [PMID: 29264329 DOI: 10.11138/mltj/2017.7.2.202] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
Abstract
Introduction Rotator cuff (RC) tears are common tendon injuries. Clinically, both muscle atrophy and fatty infiltration have generally been attributed to poor functional outcomes. Matrix metalloproteinase-13 plays a crucial role in extracellular matrix remodeling in many physiological and pathological processes. Nevertheless, its role in rotator cuff muscle atrophy and fatty infiltration remains unknown. The purpose of this study is to define the functional role of MMP-13 in rotator cuff muscle atrophy and fatty infiltration using a mouse RC tears model. Materials and methods Unilateral complete supraspinatus and infraspinatus tendon transection and suprascapular nerve transection was performed on nine of MMP-13 (-/-) knockout and nine of MMP-13 (+/+) wildtype mice at 3 months old. Mice were sacrificed 6 weeks after surgery. Supraspinatus (SS) and infraspinatus (IS) muscles were harvested for histology and gene expression analysis with RT-PCR. Results Six weeks after RC surgery, no significant difference in muscle atrophy and fibrosis between MMP-13 knockout and wild type mice was observed. However, there was a significant increase in the amount of fatty infiltration in MMP-13 knockout mice compared to the wild types. Muscles from MMP-13 knockout mice have significantly higher expression of fatty infiltration related genes. Discussion Results from this study suggest that MMP-13 plays a crucial role in rotator cuff muscle fatty degeneration. This novel finding suggests a new molecular mechanism that governs RC muscle FI and MMP-13 may serve as a target for therapeutics to treat muscle FI after RC tears.
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Affiliation(s)
- Xuhui Liu
- San Francisco Veterans Affairs Medical Center, Department of Veterans Affairs, San Francisco, USA.,Department of Orthopaedic Surgery, University of California, San Francisco, USA
| | - Bharat Ravishankar
- Department of Orthopaedic Surgery, University of California, San Francisco, USA
| | - Anne Ning
- San Francisco Veterans Affairs Medical Center, Department of Veterans Affairs, San Francisco, USA.,Department of Orthopaedic Surgery, University of California, San Francisco, USA
| | - Mengyao Liu
- Department of Orthopaedic Surgery, University of California, San Francisco, USA
| | - Hubert T Kim
- San Francisco Veterans Affairs Medical Center, Department of Veterans Affairs, San Francisco, USA.,Department of Orthopaedic Surgery, University of California, San Francisco, USA
| | - Brian T Feeley
- San Francisco Veterans Affairs Medical Center, Department of Veterans Affairs, San Francisco, USA.,Department of Orthopaedic Surgery, University of California, San Francisco, USA
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38
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Li XD, Zhang XR, Li ZH, Yang Y, Zhang D, Zheng H, Dong SY, Chen J, Zeng XD. Effect of Matrix Metallopeptidase 13 on the Function of Mouse Bone Marrow-derived Dendritic Cells. Chin Med J (Engl) 2017; 130:717-721. [PMID: 28303856 PMCID: PMC5358423 DOI: 10.4103/0366-6999.201602] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022] Open
Abstract
Background: Dendritic cells are professional antigen-presenting cells found in an immature state in epithelia and interstitial space, where they capture antigens such as pathogens or damaged tissue. Matrix metallopeptidase 13 (MMP-13), a member of the collagenase subfamily, is involved in many different cellular processes and is expressed in murine bone marrow-derived dendritic cells (DCs). The function of MMP-13 in DCs is not well understood. Here, we investigated the effect of MMP-13 on DC maturation, apoptosis, and phagocytosis. Methods: Bone marrow-derived dendritic cells were obtained from C57BL/6 mice. One short-interfering RNA specific for MMP-13 was used to transfect DCs. MMP-13-silenced DCs and control DCs were prepared, and apoptosis was measured using real-time polymerase chain reaction and Western blotting. MMP-13-silenced DCs and control DCs were analyzed for surface expression of CD80 and CD86 and phagocytosis capability using flow cytometry. Results: Compared to the control DCs, MMP-13-silenced DCs increased expression of anti-apoptosis-related genes, BAG1 (control group vs. MMP-13-silenced group: 4.08 ± 0.60 vs. 6.11 ± 0.87, P = 0.008), BCL-2 (control group vs. MMP-13-silenced group: 7.54 ± 0.76 vs. 9.54 ± 1.29, P = 0.036), and TP73 (control group vs. MMP-13-silenced group: 4.33 ± 0.29 vs. 5.60 ± 0.32, P = 0.001) and decreased apoptosis-related genes, CASP1 (control group vs. MMP-13-silenced group: 3.79 ± 0.67 vs. 2.54 ± 0.39, P = 0.019), LTBR (control group vs. MMP-13-silenced group: 9.23 ± 1.25 vs. 6.24 ± 1.15, P = 0.012), and CASP4 (control group vs. MMP-13-silenced group: 2.07 ± 0.56 vs. 0.35 ± 0.35, P = 0.002). Protein levels confirmed the same expression pattern. MMP-13-silenced groups decreased expression of CD86 on DCs; however, there was no statistical difference in CD80 surface expression. Furthermore, MMP-13-silenced groups exhibited weaker phagocytosis capability. Conclusion: These results indicate that MMP-13 inhibition dampens DC maturation, apoptosis, and phagocytosis.
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Affiliation(s)
- Xiao-Dong Li
- Department of Dermatology, Central Hospital Affiliated to Shenyang Medical College, Shenyang, Liaoning 110024, China
| | - Xin-Rui Zhang
- Department of Dermatology, Central Hospital Affiliated to Shenyang Medical College, Shenyang, Liaoning 110024, China
| | - Zhi-Hao Li
- Department of Dermatology, Central Hospital Affiliated to Shenyang Medical College, Shenyang, Liaoning 110024, China
| | - Yang Yang
- Department of Dermatology Key Laboratory of Immunodermatology, No. 1 Hospital of China Medical University, Shenyang, Liaoning 110001, China
| | - Duo Zhang
- Department of Dermatology, Central Hospital Affiliated to Shenyang Medical College, Shenyang, Liaoning 110024, China
| | - Heng Zheng
- Department of Dermatology, Central Hospital Affiliated to Shenyang Medical College, Shenyang, Liaoning 110024, China
| | - Shu-Ying Dong
- Department of Dermatology, Central Hospital Affiliated to Shenyang Medical College, Shenyang, Liaoning 110024, China
| | - Juan Chen
- Department of Dermatology, Central Hospital Affiliated to Shenyang Medical College, Shenyang, Liaoning 110024, China
| | - Xian-Dong Zeng
- Department of Oncology, Central Hospital Affiliated to Shenyang Medical College, Shenyang, Liaoning 110024, China
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Duncan HF, Smith AJ, Fleming GJP, Partridge NC, Shimizu E, Moran GP, Cooper PR. The Histone-Deacetylase-Inhibitor Suberoylanilide Hydroxamic Acid Promotes Dental Pulp Repair Mechanisms Through Modulation of Matrix Metalloproteinase-13 Activity. J Cell Physiol 2017; 231:798-816. [PMID: 26264761 DOI: 10.1002/jcp.25128] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2015] [Accepted: 08/07/2015] [Indexed: 12/23/2022]
Abstract
Direct application of histone-deacetylase-inhibitors (HDACis) to dental pulp cells (DPCs) induces chromatin changes, promoting gene expression and cellular-reparative events. We have previously demonstrated that HDACis (valproic acid, trichostatin A) increase mineralization in dental papillae-derived cell-lines and primary DPCs by stimulation of dentinogenic gene expression. Here, we investigated novel genes regulated by the HDACi, suberoylanilide hydroxamic acid (SAHA), to identify new pathways contributing to DPC differentiation. SAHA significantly compromised DPC viability only at relatively high concentrations (5 μM); while low concentrations (1 μM) SAHA did not increase apoptosis. HDACi-exposure for 24 h induced mineralization-per-cell dose-dependently after 2 weeks; however, constant 14d SAHA-exposure inhibited mineralization. Microarray analysis (24 h and 14 days) of SAHA exposed cultures highlighted that 764 transcripts showed a significant >2.0-fold change at 24 h, which reduced to 36 genes at 14 days. 59% of genes were down-regulated at 24 h and 36% at 14 days, respectively. Pathway analysis indicated SAHA increased expression of members of the matrix metalloproteinase (MMP) family. Furthermore, SAHA-supplementation increased MMP-13 protein expression (7 d, 14 days) and enzyme activity (48 h, 14 days). Selective MMP-13-inhibition (MMP-13i) dose-dependently accelerated mineralization in both SAHA-treated and non-treated cultures. MMP-13i-supplementation promoted expression of several mineralization-associated markers, however, HDACi-induced cell migration and wound healing were impaired. Data demonstrate that short-term low-dose SAHA-exposure promotes mineralization in DPCs by modulating gene pathways and tissue proteases. MMP-13i further increased mineralization-associated events, but decreased HDACi cell migration indicating a specific role for MMP-13 in pulpal repair processes. Pharmacological inhibition of HDAC and MMP may provide novel insights into pulpal repair processes with significant translational benefit. J. Cell. Physiol. 231: 798-816, 2016. © 2015 Wiley Periodicals, Inc.
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Affiliation(s)
- Henry F Duncan
- Division of Restorative Dentistry and Periodontology, Dublin Dental University Hospital, Trinity College Dublin, Lincoln Place, Dublin 2, Ireland
| | - Anthony J Smith
- Oral Biology, School of Dentistry, University of Birmingham, Birmingham, UK
| | - Garry J P Fleming
- Material Science Unit, Dublin Dental University Hospital, Trinity College Dublin, Ireland
| | - Nicola C Partridge
- Department of Basic Science and Craniofacial Biology, New York University College of Dentistry, New York
| | - Emi Shimizu
- Department of Basic Science and Craniofacial Biology, New York University College of Dentistry, New York
| | - Gary P Moran
- Division of Oral Biosciences, Dublin Dental University Hospital, Trinity College Dublin, Ireland
| | - Paul R Cooper
- Oral Biology, School of Dentistry, University of Birmingham, Birmingham, UK
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Ayuso M, Fernández A, Núñez Y, Benítez R, Isabel B, Fernández AI, Rey AI, González-Bulnes A, Medrano JF, Cánovas Á, López-Bote CJ, Óvilo C. Developmental Stage, Muscle and Genetic Type Modify Muscle Transcriptome in Pigs: Effects on Gene Expression and Regulatory Factors Involved in Growth and Metabolism. PLoS One 2016; 11:e0167858. [PMID: 27936208 PMCID: PMC5148031 DOI: 10.1371/journal.pone.0167858] [Citation(s) in RCA: 41] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2016] [Accepted: 11/21/2016] [Indexed: 01/08/2023] Open
Abstract
Iberian pig production includes purebred (IB) and Duroc-crossbred (IBxDU) pigs, which show important differences in growth, fattening and tissue composition. This experiment was conducted to investigate the effects of genetic type and muscle (Longissimus dorsi (LD) vs Biceps femoris (BF)) on gene expression and transcriptional regulation at two developmental stages. Nine IB and 10 IBxDU piglets were slaughtered at birth, and seven IB and 10 IBxDU at four months of age (growing period). Carcass traits and LD intramuscular fat (IMF) content were measured. Muscle transcriptome was analyzed on LD samples with RNA-Seq technology. Carcasses were smaller in IB than in IBxDU neonates (p < 0.001), while growing IB pigs showed greater IMF content (p < 0.05). Gene expression was affected (p < 0.01 and Fold change > 1.5) by the developmental stage (5,812 genes), muscle type (135 genes), and genetic type (261 genes at birth and 113 at growth). Newborns transcriptome reflected a highly proliferative developmental stage, while older pigs showed upregulation of catabolic and muscle functioning processes. Regarding the genetic type effect, IBxDU newborns showed enrichment of gene pathways involved in muscle growth, in agreement with the higher prenatal growth observed in these pigs. However, IB growing pigs showed enrichment of pathways involved in protein deposition and cellular growth, supporting the compensatory gain experienced by IB pigs during this period. Moreover, newborn and growing IB pigs showed more active glucose and lipid metabolism than IBxDU pigs. Moreover, LD muscle seems to have more active muscular and cell growth, while BF points towards lipid metabolism and fat deposition. Several regulators controlling transcriptome changes in both genotypes were identified across muscles and ages (SIM1, PVALB, MEFs, TCF7L2 or FOXO1), being strong candidate genes to drive expression and thus, phenotypic differences between IB and IBxDU pigs. Many of the identified regulators were known to be involved in muscle and adipose tissues development, but others not previously associated with pig muscle growth were also identified, as PVALB, KLF1 or IRF2. The present study discloses potential molecular mechanisms underlying phenotypic differences observed between IB and IBxDU pigs and highlights candidate genes implicated in these molecular mechanisms.
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Affiliation(s)
- Miriam Ayuso
- Departamento de Producción Animal, Facultad de Veterinaria, Universidad Complutense de Madrid, Madrid, Spain
| | | | - Yolanda Núñez
- Departamento de Mejora Genética Animal, INIA, Madrid, Spain
| | - Rita Benítez
- Departamento de Mejora Genética Animal, INIA, Madrid, Spain
| | - Beatriz Isabel
- Departamento de Producción Animal, Facultad de Veterinaria, Universidad Complutense de Madrid, Madrid, Spain
| | | | - Ana I. Rey
- Departamento de Producción Animal, Facultad de Veterinaria, Universidad Complutense de Madrid, Madrid, Spain
| | | | - Juan F. Medrano
- Department of Animal Science, University of California Davis, Davis, California, United States of America
| | - Ángela Cánovas
- Department of Animal Science, University of California Davis, Davis, California, United States of America
| | - Clemente J. López-Bote
- Departamento de Producción Animal, Facultad de Veterinaria, Universidad Complutense de Madrid, Madrid, Spain
| | - Cristina Óvilo
- Departamento de Mejora Genética Animal, INIA, Madrid, Spain
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Beyer S, Pontis J, Schirwis E, Battisti V, Rudolf A, Le Grand F, Ait-Si-Ali S. Canonical Wnt signalling regulates nuclear export of Setdb1 during skeletal muscle terminal differentiation. Cell Discov 2016; 2:16037. [PMID: 27790377 PMCID: PMC5067623 DOI: 10.1038/celldisc.2016.37] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2016] [Accepted: 09/19/2016] [Indexed: 02/06/2023] Open
Abstract
The histone 3 lysine 9 methyltransferase Setdb1 is essential for both stem cell pluripotency and terminal differentiation of different cell types. To shed light on the roles of Setdb1 in these mutually exclusive processes, we used mouse skeletal myoblasts as a model of terminal differentiation. Ex vivo studies on isolated single myofibres showed that Setdb1 is required for adult muscle stem cells expansion following activation. In vitro studies in skeletal myoblasts confirmed that Setdb1 suppresses terminal differentiation. Genomic binding analyses showed a release of Setdb1 from selected target genes upon myoblast terminal differentiation, concomitant to a nuclear export of Setdb1 to the cytoplasm. Both genomic release and cytoplasmic Setdb1 relocalisation during differentiation were dependent on canonical Wnt signalling. Transcriptomic assays in myoblasts unravelled a significant overlap between Setdb1 and Wnt3a regulated genetic programmes. Together, our findings revealed Wnt-dependent subcellular relocalisation of Setdb1 as a novel mechanism regulating Setdb1 functions and myogenesis.
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Affiliation(s)
- Sophie Beyer
- Centre National de la Recherche Scientifique CNRS-Université Paris Diderot, Sorbonne Paris Cité, Epigenetics and Cell Fate UMR7216 , Paris, France
| | - Julien Pontis
- Centre National de la Recherche Scientifique CNRS-Université Paris Diderot, Sorbonne Paris Cité, Epigenetics and Cell Fate UMR7216 , Paris, France
| | - Elija Schirwis
- Institut Cochin, Université Paris-Descartes, Centre National de la Recherche Scientifique (CNRS) UMR8104, Paris, France; Institut National de la Santé et de la Recherche Médicale (INSERM) U1016, Paris, France
| | - Valentine Battisti
- Centre National de la Recherche Scientifique CNRS-Université Paris Diderot, Sorbonne Paris Cité, Epigenetics and Cell Fate UMR7216 , Paris, France
| | - Anja Rudolf
- Institut Cochin, Université Paris-Descartes, Centre National de la Recherche Scientifique (CNRS) UMR8104, Paris, France; Institut National de la Santé et de la Recherche Médicale (INSERM) U1016, Paris, France
| | - Fabien Le Grand
- Institut Cochin, Université Paris-Descartes, Centre National de la Recherche Scientifique (CNRS) UMR8104, Paris, France; Institut National de la Santé et de la Recherche Médicale (INSERM) U1016, Paris, France
| | - Slimane Ait-Si-Ali
- Centre National de la Recherche Scientifique CNRS-Université Paris Diderot, Sorbonne Paris Cité, Epigenetics and Cell Fate UMR7216 , Paris, France
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Kim CH, Shin JH, Hwang SJ, Choi YH, Kim DS, Kim CM. Schisandrae fructus enhances myogenic differentiation and inhibits atrophy through protein synthesis in human myotubes. Int J Nanomedicine 2016; 11:2407-15. [PMID: 27330287 PMCID: PMC4898430 DOI: 10.2147/ijn.s101299] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022] Open
Abstract
Schisandrae fructus (SF) has recently been reported to increase skeletal muscle mass and inhibit atrophy in mice. We investigated the effect of SF extract on human myotube differentiation and its acting pathway. Various concentrations (0.1–10 μg/mL) of SF extract were applied on human skeletal muscle cells in vitro. Myotube area and fusion index were measured to quantify myotube differentiation. The maximum effect was observed at 0.5 μg/mL of SF extract, enhancing differentiation up to 1.4-fold in fusion index and 1.6-fold in myotube area at 8 days after induction of differentiation compared to control. Phosphorylation of eukaryotic translation initiation factor 4E-binding protein 1 and 70 kDa ribosomal protein S6 kinase, which initiate translation as downstream of mammalian target of rapamycin pathway, was upregulated in early phases of differentiation after SF treatment. SF also attenuated dexamethasone-induced atrophy. In conclusion, we show that SF augments myogenic differentiation and attenuates atrophy by increasing protein synthesis through mammalian target of rapamycin/70 kDa ribosomal protein S6 kinase and eukaryotic translation initiation factor 4E-binding protein 1 signaling pathway in human myotubes. SF can be a useful natural dietary supplement in increasing skeletal muscle mass, especially in the aged with sarcopenia and the patients with disuse atrophy.
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Affiliation(s)
- Cy Hyun Kim
- Research Institute of Convergence of Biomedical Science and Technology, Pusan National University Yangsan Hospital, Yangsan, Republic of Korea; Center for Anti-Aging Industry, Pusan National University, Busan, Republic of Korea
| | - Jin-Hong Shin
- Research Institute of Convergence of Biomedical Science and Technology, Pusan National University Yangsan Hospital, Yangsan, Republic of Korea; Department of Neurology, Pusan National University Yangsan Hospital, Yangsan, Republic of Korea
| | - Sung Jun Hwang
- Research Institute of Convergence of Biomedical Science and Technology, Pusan National University Yangsan Hospital, Yangsan, Republic of Korea; Center for Anti-Aging Industry, Pusan National University, Busan, Republic of Korea
| | - Yung Hyun Choi
- Department of Biochemistry, Dong-eui University College of Korean Medicine, Busan, Republic of Korea
| | - Dae-Seong Kim
- Research Institute of Convergence of Biomedical Science and Technology, Pusan National University Yangsan Hospital, Yangsan, Republic of Korea; Department of Neurology, Pusan National University Yangsan Hospital, Yangsan, Republic of Korea
| | - Cheol Min Kim
- Center for Anti-Aging Industry, Pusan National University, Busan, Republic of Korea; Department of Biomedical Informatics, Pusan National University School of Medicine, Yangsan, Republic of Korea
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Grabiec K, Majewska A, Wicik Z, Milewska M, Błaszczyk M, Grzelkowska-Kowalczyk K. The effect of palmitate supplementation on gene expression profile in proliferating myoblasts. Cell Biol Toxicol 2016; 32:185-98. [PMID: 27114085 PMCID: PMC4882353 DOI: 10.1007/s10565-016-9324-2] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2015] [Accepted: 03/28/2016] [Indexed: 12/20/2022]
Abstract
High-fat diet, exposure to saturated fatty acids, or the presence of adipocytes in myoblast microenvironment affects skeletal muscle growth and function. The aim of the present study was to investigate the effect of palmitate supplementation on transcriptomic profile of mouse C2C12 myoblasts. Global gene expression was evaluated using whole mouse genome oligonucleotide microarrays, and the results were validated through qPCR. A total of 4047 genes were identified as differentially expressed, including 3492 downregulated and 555 upregulated genes, during a 48-h exposure to palmitate (0.1 mmol/l). Functional classification showed the involvement of these genes in several processes which regulate cell growth. In conclusion, the addition of palmitate modifies the expression of genes associated with (1) myoblast responsiveness to hormones and growth factors, (2) cytokine and growth factor expression, and (3) regulation of cell-cell and cell-matrix communication. Such alterations can affect myoblast growth and differentiation; however, further studies in this field are required.
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Affiliation(s)
- K Grabiec
- Department of Physiological Sciences, Faculty of Veterinary Medicine, Warsaw University of Life Sciences (SGGW), Nowoursynowska 159, 02-776, Warsaw, Poland
| | - A Majewska
- Department of Physiological Sciences, Faculty of Veterinary Medicine, Warsaw University of Life Sciences (SGGW), Nowoursynowska 159, 02-776, Warsaw, Poland
| | - Z Wicik
- Department of Physiological Sciences, Faculty of Veterinary Medicine, Warsaw University of Life Sciences (SGGW), Nowoursynowska 159, 02-776, Warsaw, Poland
| | - M Milewska
- Department of Physiological Sciences, Faculty of Veterinary Medicine, Warsaw University of Life Sciences (SGGW), Nowoursynowska 159, 02-776, Warsaw, Poland
| | - M Błaszczyk
- Department of Physiological Sciences, Faculty of Veterinary Medicine, Warsaw University of Life Sciences (SGGW), Nowoursynowska 159, 02-776, Warsaw, Poland
| | - K Grzelkowska-Kowalczyk
- Department of Physiological Sciences, Faculty of Veterinary Medicine, Warsaw University of Life Sciences (SGGW), Nowoursynowska 159, 02-776, Warsaw, Poland.
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Frara N, Abdelmagid SM, Tytell M, Amin M, Popoff SN, Safadi FF, Barbe MF. Growth and repair factors, osteoactivin, matrix metalloproteinase and heat shock protein 72, increase with resolution of inflammation in musculotendinous tissues in a rat model of repetitive grasping. BMC Musculoskelet Disord 2016; 17:34. [PMID: 26781840 PMCID: PMC4717665 DOI: 10.1186/s12891-016-0892-3] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/09/2015] [Accepted: 01/13/2016] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND Expression of the growth factor osteoactivin (OA) increases during tissue degeneration and regeneration, fracture repair and after denervation-induced disuse atrophy, concomitant with increased matrix metalloproteinases (MMPs). However, OA's expression with repetitive overuse injuries is unknown. The aim of this study was to evaluate: 1) OA expression in an operant rat model of repetitive overuse; 2) expression of MMPs; 3) inflammatory cytokines indicative of injury or inflammation; and 4) the inducible form of heat shock protein 70 (HSPA1A/HSP72) as the latter is known to increase during metabolic stress and to be involved in cellular repair. Young adult female rats performed a high repetition negligible force (HRNF) food retrieval task for up to 6 weeks and were compared to control rats. METHODS Flexor digitorum muscles and tendons were collected from 22 young adult female rats performing a HRNF reaching task for 3 to 6 weeks, and 12 food restricted control (FRC) rats. OA mRNA levels were assessed by quantitative polymerase chain reaction (qPCR). OA, MMP-1, -2, -3, and -13 and HSP72 protein expression was assayed using Western blotting. Immunohistochemistry and image analysis was used to evaluate OA and HSP72 expression. ELISA was performed for HSP72 and inflammatory cytokines. RESULTS Flexor digitorum muscles and tendons from 6-week HRNF rats showed increased OA mRNA and protein expression compared to FRC rats. MMP-1, -2 and -3 progressively increased in muscles whereas MMP-1 and -3 increased in tendons with HRNF task performance. HSP72 increased in 6-week HRNF muscles and tendons, compared to controls, and co-localized with OA in the myofiber sarcolemma. IL-1alpha and beta increased transiently in tendons or muscles in HRNF week 3 before resolving in week 6. CONCLUSION The simultaneous increases of OA with factors involved in tissue repair (MMPs and HSP72) supports a role of OA in tissue regeneration after repetitive overuse.
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Affiliation(s)
- Nagat Frara
- Department of Anatomy and Cell Biology, Temple University School of Medicine, Philadelphia, PA, USA
| | - Samir M Abdelmagid
- Department of Stem Cell Biology and Regenerative Medicine, Lerner Research Institute, Cleveland Clinic, Cleveland, OH, USA
| | - Michael Tytell
- Department of Neurobiology and Anatomy, Wake Forest University School of Medicine, Winston-Salem, NC, USA
| | - Mamta Amin
- Department of Anatomy and Cell Biology, Temple University School of Medicine, Philadelphia, PA, USA
| | - Steven N Popoff
- Department of Anatomy and Cell Biology, Temple University School of Medicine, Philadelphia, PA, USA
| | - Fayez F Safadi
- Department of Anatomy and Neurobiology, Northeast Ohio Medical University (NEOMED), Rootstown, OH, USA
| | - Mary F Barbe
- Department of Anatomy and Cell Biology, Temple University School of Medicine, Philadelphia, PA, USA.
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Meyer SU, Krebs S, Thirion C, Blum H, Krause S, Pfaffl MW. Tumor Necrosis Factor Alpha and Insulin-Like Growth Factor 1 Induced Modifications of the Gene Expression Kinetics of Differentiating Skeletal Muscle Cells. PLoS One 2015; 10:e0139520. [PMID: 26447881 PMCID: PMC4598026 DOI: 10.1371/journal.pone.0139520] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2015] [Accepted: 09/13/2015] [Indexed: 12/19/2022] Open
Abstract
Introduction TNF-α levels are increased during muscle wasting and chronic muscle degeneration and regeneration processes, which are characteristic for primary muscle disorders. Pathologically increased TNF-α levels have a negative effect on muscle cell differentiation efficiency, while IGF1 can have a positive effect; therefore, we intended to elucidate the impact of TNF-α and IGF1 on gene expression during the early stages of skeletal muscle cell differentiation. Methodology/Principal Findings This study presents gene expression data of the murine skeletal muscle cells PMI28 during myogenic differentiation or differentiation with TNF-α or IGF1 exposure at 0 h, 4 h, 12 h, 24 h, and 72 h after induction. Our study detected significant coregulation of gene sets involved in myoblast differentiation or in the response to TNF-α. Gene expression data revealed a time- and treatment-dependent regulation of signaling pathways, which are prominent in myogenic differentiation. We identified enrichment of pathways, which have not been specifically linked to myoblast differentiation such as doublecortin-like kinase pathway associations as well as enrichment of specific semaphorin isoforms. Moreover to the best of our knowledge, this is the first description of a specific inverse regulation of the following genes in myoblast differentiation and response to TNF-α: Aknad1, Cmbl, Sepp1, Ndst4, Tecrl, Unc13c, Spats2l, Lix1, Csdc2, Cpa1, Parm1, Serpinb2, Aspn, Fibin, Slc40a1, Nrk, and Mybpc1. We identified a gene subset (Nfkbia, Nfkb2, Mmp9, Mef2c, Gpx, and Pgam2), which is robustly regulated by TNF-α across independent myogenic differentiation studies. Conclusions This is the largest dataset revealing the impact of TNF-α or IGF1 treatment on gene expression kinetics of early in vitro skeletal myoblast differentiation. We identified novel mRNAs, which have not yet been associated with skeletal muscle differentiation or response to TNF-α. Results of this study may facilitate the understanding of transcriptomic networks underlying inhibited muscle differentiation in inflammatory diseases.
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Affiliation(s)
- Swanhild U Meyer
- Physiology Weihenstephan, ZIEL Research Center for Nutrition and Food Sciences, Technische Universität München, Freising, Germany
| | - Stefan Krebs
- Laboratory for Functional Genome Analysis (LAFUGA), Gene Center, University of Munich, Ludwig-Maximilians-Universität München, München, Germany
| | | | - Helmut Blum
- Laboratory for Functional Genome Analysis (LAFUGA), Gene Center, University of Munich, Ludwig-Maximilians-Universität München, München, Germany
| | - Sabine Krause
- Friedrich-Baur-Institute, Department of Neurology, Ludwig-Maximilians-Universität München, München, Germany
| | - Michael W Pfaffl
- Physiology Weihenstephan, ZIEL Research Center for Nutrition and Food Sciences, Technische Universität München, Freising, Germany
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Yang X, Koltes JE, Park CA, Chen D, Reecy JM. Gene co-expression network analysis provides novel insights into myostatin regulation at three different mouse developmental timepoints. PLoS One 2015; 10:e0117607. [PMID: 25695797 PMCID: PMC4335066 DOI: 10.1371/journal.pone.0117607] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2014] [Accepted: 12/29/2014] [Indexed: 12/03/2022] Open
Abstract
Myostatin (Mstn) knockout mice exhibit large increases in skeletal muscle mass. However, relatively few of the genes that mediate or modify MSTN effects are known. In this study, we performed co-expression network analysis using whole transcriptome microarray data from MSTN-null and wild-type mice to identify genes involved in important biological processes and pathways related to skeletal muscle and adipose development. Genes differentially expressed between wild-type and MSTN-null mice were further analyzed for shared DNA motifs using DREME. Differentially expressed genes were identified at 13.5 d.p.c. during primary myogenesis and at d35 during postnatal muscle development, but not at 17.5 d.p.c. during secondary myogenesis. In total, 283 and 2034 genes were differentially expressed at 13.5 d.p.c. and d35, respectively. Over-represented transcription factor binding sites in differentially expressed genes included SMAD3, SP1, ZFP187, and PLAGL1. The use of regulatory (RIF) and phenotypic (PIF) impact factor and differential hubbing co-expression analyses identified both known and potentially novel regulators of skeletal muscle growth, including Apobec2, Atp2a2, and Mmp13 at d35 and Sox2, Tmsb4x, and Vdac1 at 13.5 d.p.c. Among the genes with the highest PIF scores were many fiber type specifying genes. The use of RIF, PIF, and differential hubbing analyses identified both known and potentially novel regulators of muscle development. These results provide new details of how MSTN may mediate transcriptional regulation as well as insight into novel regulators of MSTN signal transduction that merit further study regarding their physiological roles in muscle and adipose development.
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Affiliation(s)
- Xuerong Yang
- Animal Nutrition Institute, Sichuan Agricultural University, Ya’an, Sichuan, China
- Department of Animal Science, Iowa State University, Ames, Iowa, United States of America
| | - James E. Koltes
- Department of Animal Science, Iowa State University, Ames, Iowa, United States of America
| | - Carissa A. Park
- Department of Animal Science, Iowa State University, Ames, Iowa, United States of America
| | - Daiwen Chen
- Animal Nutrition Institute, Sichuan Agricultural University, Ya’an, Sichuan, China
| | - James M. Reecy
- Department of Animal Science, Iowa State University, Ames, Iowa, United States of America
- * E-mail:
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Park S, Brisson BK, Liu M, Spinazzola JM, Barton ER. Mature IGF-I excels in promoting functional muscle recovery from disuse atrophy compared with pro-IGF-IA. J Appl Physiol (1985) 2013; 116:797-806. [PMID: 24371018 DOI: 10.1152/japplphysiol.00955.2013] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
Prolonged disuse of skeletal muscle results in atrophy, and once physical activity is resumed, there is increased susceptibility to injury. Insulin-like growth factor-I (IGF-I) is considered a potential therapeutic target to attenuate atrophy during unloading and to enhance rehabilitation upon reloading of skeletal muscles, due to its multipronged actions on satellite cell proliferation, differentiation, and survival, as well as its actions on muscle fibers to boost protein synthesis and inhibit protein degradation. However, the form of IGF-I delivered may alter the success of treatment. Using the hindlimb suspension model of disuse atrophy, we compared the efficacy of two IGF-I forms in protection against atrophy and enhancement of recovery: mature IGF-I (IGF-IS) lacking the COOH-terminal extension, called the E-peptide, and IGF-IA, which is the predominant form retaining the E-peptide. Self-complementary adeno-associated virus harboring the murine Igf1 cDNA constructs were delivered to hindlimbs of adult female C57BL6 mice 3 days prior to hindlimb suspension. Hindlimb muscles were unloaded for 7 days and then reloaded for 3, 7, and 14 days. Loss of muscle mass following suspension was not prevented by either IGF-I construct. However, IGF-IS expression maintained soleus muscle force production. Further, IGF-IS treatment caused rapid recovery of muscle fiber morphology during reloading and maintained muscle strength. Analysis of gene expression revealed that IGF-IS expression accelerated the downregulation of atrophy-related genes compared with untreated or IGF-IA-treated samples. We conclude that mature-IGF-I may be a better option than pro-IGF-IA to promote skeletal muscle recovery following disuse atrophy.
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Affiliation(s)
- Soohyun Park
- Department of Anatomy and Cell Biology, School of Dental Medicine
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