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Han Y, Guo W, Su R, Zhang Y, Yang L, Borjigin G, Duan Y. Effects of sheep slaughter age on myogenic characteristics in skeletal muscle satellite cells. Anim Biosci 2022; 35:614-623. [PMID: 34991228 PMCID: PMC8902214 DOI: 10.5713/ab.21.0193] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2021] [Accepted: 10/14/2021] [Indexed: 01/22/2023] Open
Abstract
Objective The objective of this study was to investigate the effects of sheep slaughter age on myogenic characteristics in skeletal muscle satellite cells (SMSCs). Methods Primary SMSCs were isolated from hind leg biceps femoris muscles of Wurank lambs (slaughtered at three months, Mth-3) and adults (slaughtered at fifteen months, Mth-15). SMSCs were selected by morphological observation and fluorescence staining. Myogenic regulatory factors (MRF) and myosin heavy chain (MyHC) expressions of SMSCs were analyzed on days 1, 3, 4, and 5. Results The expressions of myogenic factor 5 (Myf5), myogenic differentiation (MyoD), Myf6, and myogenin (MyoG) in Mth-15 were significantly higher in Mth-15 than in Mth-3 on days 1, 3, and 4 (p<0.05). However, MyoG expression in Mth-15 was significantly lower than in Mth-3 on day 5 (p<0.05). The expressions of MyHC I, MyHC IIa, and MyHC IIx in Mth-15 were significantly higher than in Mth-3 on days 1 and 3 (p<0.05), and MyHC IIb were significantly lower than in Mth-3 on days 3 and 4 (p<0.05). In contrast, the expression of MyHC IIx in Mth-15 was significantly lower and MyHC IIb was significantly higher than in Mth-3 on days 5 (p<0.05). Conclusion The slaughter age altered the expression of MRFs and MyHCs in SMSCs while differentiation, which caused the variation of myogenic characteristics, and thus may affect the meat quality of Wurank sheep.
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Affiliation(s)
- Yunfei Han
- College of Food Science and Engineering, Inner Mongolia Agricultural University, Hohhot 010018, China
| | - Wenrui Guo
- College of Veterinary Medicine, Inner Mongolia Agricultural University, Hohhot 010018, China
| | - Rina Su
- Inner Mongolia Vocational college of Chemical Engineering, Hohhot 010018, China
| | - Yanni Zhang
- College of Food Science and Engineering, Inner Mongolia Agricultural University, Hohhot 010018, China
| | - Le Yang
- College of Food Science and Engineering, Inner Mongolia Agricultural University, Hohhot 010018, China
| | - Gerelt Borjigin
- College of Food Science and Engineering, Inner Mongolia Agricultural University, Hohhot 010018, China
| | - Yan Duan
- College of Food Science and Engineering, Inner Mongolia Agricultural University, Hohhot 010018, China
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Brearley MC, Loczenski-Brown DM, Loughna PT, Parr T, Brameld JM. Response of the porcine MYH4-promoter and MYH4-expressing myotubes to known anabolic and catabolic agents in vitro. Biochem Biophys Rep 2021; 25:100924. [PMID: 33614996 PMCID: PMC7880916 DOI: 10.1016/j.bbrep.2021.100924] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2020] [Revised: 01/17/2021] [Accepted: 01/17/2021] [Indexed: 11/18/2022] Open
Abstract
Myosin heavy chain-IIB (MyHC-IIB; encoded by MYH4 or Myh4) expression is often associated with muscle hypertrophic growth. Unlike other large mammals, domestic pig breeds express MyHC-IIB at both the mRNA and protein level. Aim To utilise a fluorescence-based promoter-reporter system to test the influence of anabolic and catabolic agents on increasing porcine MYH4-promoter activity and determine whether cell hypertrophy was subsequently induced. Methods C2C12 myoblasts were co-transfected with porcine MYH4-promoter-driven ZsGreen and CMV-driven DsRed expression plasmids. At the onset of differentiation, treatments (dibutyryl cyclic-AMP (dbcAMP), Des(1–3) Insulin-Like Growth Factor-1 (IGF-I), triiodo-l-thyronine (T3) and dexamethasone (Dex)) or appropriate vehicle controls were added and cells maintained for up to four days. At day 4 of differentiation, measurements were collected for total fluorescence and average myotube diameter, as indicators of MYH4-promoter activity and cell hypertrophy respectively. Results Porcine MYH4-promoter activity increased during C2C12 myogenic differentiation, with a marked increase between days 3 and 4. MYH4-promoter activity was further increased following four days of dbcAMP treatment and average myotube diameter was significantly increased by dbcAMP. Porcine MYH4-promoter activity also tended to be increased by T3 treatment, but there were no effects of Des(1–3) IGF-I or Dex treatment, whereas average myotube diameter was increased by Des(1–3) IGF-I, but not T3 or Dex. Conclusion Porcine MYH4-promoter activity responded to dbcAMP, Des(1–3) IGF-I and T3 treatment in vitro as observed previously in reported in vivo studies. However, we report that increased MYH4-promoter activity was not always associated with muscle cell hypertrophy. The fluorescence-based reporter system offers a useful tool to study muscle cell hypertrophic growth. In vitro porcine MYH4-promoter-reporter system to test anabolic & catabolic agents. Changes in porcine MYH4-promoter activity & myotube diameter measured in tandem. MYH4-promoter activity responded to dbcAMP, Des(1–3) IGF-I and T3 as seen in vivo. Increased MYH4-promoter activity was not always associated with cell hypertrophy.
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Affiliation(s)
- Madelaine C Brearley
- School of Biosciences, University of Nottingham, Sutton Bonington Campus, Loughborough, Leicestershire, LE12 5RD, United Kingdom
| | - David M Loczenski-Brown
- School of Biosciences, University of Nottingham, Sutton Bonington Campus, Loughborough, Leicestershire, LE12 5RD, United Kingdom
| | - Paul T Loughna
- School of Veterinary Medicine & Science, University of Nottingham, Sutton Bonington Campus, Loughborough, Leicestershire, LE12 5RD, United Kingdom
| | - Tim Parr
- School of Biosciences, University of Nottingham, Sutton Bonington Campus, Loughborough, Leicestershire, LE12 5RD, United Kingdom
| | - John M Brameld
- School of Biosciences, University of Nottingham, Sutton Bonington Campus, Loughborough, Leicestershire, LE12 5RD, United Kingdom
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Chen H, Li Z, Lin M, Lv X, Wang J, Wei Q, Zhang Z, Li L. MicroRNA-124-3p affects myogenic differentiation of adipose-derived stem cells by targeting Caveolin-1 during pelvic floor dysfunction in Sprague Dawley rats. ANNALS OF TRANSLATIONAL MEDICINE 2021; 9:161. [PMID: 33569463 PMCID: PMC7867888 DOI: 10.21037/atm-20-8212] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
Background The aim of this study was to investigate using myogenic differentiation of adipose stem cells for the treatment of female pelvic floor dysfunction (PFD) and aimed to further study the influences of microRNA-124-3p (miR-124-3p) in the process of myogenic differentiation of adipose-derived stem cells (ADSCs) through targeting Caveolin-1 (Cav1) during PFD in Sprague Dawley (SD) rats. Methods The ADSCs were separated from 6–8-week-old female SD rats (n=25) and were cultivated. Then, we observed the cell status and conducted fat and osteogenic experiments. We then constructed an ADSC-green fluorescent protein (GFP) stable transfer strain. Flow cytometry was used to identify the positive rates of CD44, CD90, and CD45 in ADSCs and ADSC-GFP. Real-time quantitative polymerase chain reaction (qRT-PCR) and western blotting were used to mRNA and protein expression levels. Myogenic differentiation of ADSCs was measured with immunofluorescence methods. A dual-luciferase reporter assay was executed to affirm whether Cav1 was a target of miR-124-3p. Results The isolated ADSCs cells were in good condition under the microscope. The results of flow cytometry showed that the positive rate of CD44 and CD90 was high, and the positive rate of CD45 was low in ADSCs and ADSC-GFP. Under normal culture conditions, ADSCs-GFP cells can be massively adipated and osteogenic. After 5-Aza induced ADSC-GFP myogenic differentiation, the level of miR-124-3p was significantly increased. We found that MiR-124-3p mimics promoted the myogenic differentiation of ADSCs. Moreover, we discovered that Cav1 was a target gene of miR-124-3p and was negatively regulated by miR-124-3p. The results of leak point pressure (LPP), hematoxylin and eosin (HE), and Masson showed that the collagen fiber content of the PFD group was lower than that of the control group; the collagen fiber content of ADSC-GFP, 5-Aza, or miR-124-3p mimics were increased after intervention. Furthermore, the outcomes qRT-PCR, western blotting, and immunofluorescence suggested that miR-124-3p facilitated the survival ADSC-GFP fat transplantation by regulating many key factors in vivo. Conclusions These results proofed that miR-124-3p could accelerate myogenic differentiation of ADSCs by down-regulating Cav1 to improve PFD in SD rats, which will pave the way for therapeutic delivery of miRNA targeting PFD disease.
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Affiliation(s)
- Hao Chen
- Department of Plastic Surgery, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, China
| | - Zihao Li
- Hangzhou Medical College, Hangzhou, China
| | - Ming Lin
- Department of Obstetrics and Gynecology, The Second Affiliated Hospital of Wenzhou Medical University, Wenzhou, China
| | - Xuling Lv
- Department of Plastic Surgery, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, China
| | - Jingping Wang
- Department of Plastic Surgery, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, China
| | - Qing Wei
- Department of Plastic Surgery, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, China
| | - Zikai Zhang
- Department of Plastic Surgery, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, China
| | - Liqun Li
- Department of Plastic Surgery, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, China
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Fazarinc G, Vrecl M, Poklukar K, Škrlep M, Batorek-Lukač N, Brankovič J, Tomažin U, Čandek-Potokar M. Expression of Myosin Heavy Chain and Some Energy Metabolism-Related Genes in the Longissimus Dorsi Muscle of Krškopolje Pigs: Effect of the Production System. Front Vet Sci 2020; 7:533936. [PMID: 33062658 PMCID: PMC7530236 DOI: 10.3389/fvets.2020.533936] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2020] [Accepted: 08/19/2020] [Indexed: 01/04/2023] Open
Abstract
The Slovenian Krškopolje pig is the only preserved local autochthonous breed, appreciated mainly for its good meat quality and considered more appropriate for processing into dry-cured products. However, the biological characteristics of the skeletal myofibers of the Krškopolje breed, specifically the heavy myosin chain-based contractile and metabolic phenotypes that could affect meat quality, have not been established under different husbandry systems. The breed is generally maintained in either conventional indoor or organic systems. In the present study, the morphological, contractile, and metabolic properties of myofibers of the longissimus dorsi muscle were compared between animals reared in either an organic or a conventional indoor system. The myofibers were studied using immunohistochemical and succinate dehydrogenase (SDH) activity-based classification, histomorphometric assessment, and qPCR. Results revealed that the organic production system influenced the composition of the longissimus dorsi myofiber type, characterized by a smaller myofiber cross-sectional area, a shift toward oxidative (SDH-positive) myofiber types, increased relative expression of myosin heavy chain (MyHC) isoforms I, IIa, and IIx, and downregulation of MyHC IIb. On the contrary, no apparent effect was observed on the metabolic phenotype of the myofiber as assessed through relative mRNA expression of energy metabolism-related genes [peroxisome proliferator-activated receptor gamma, coactivator 1 alpha (PGC-1α), peroxisome proliferator-activated receptor gamma (PPARγ), lipoprotein-lipase (LPL), carnitine palmitoyltransferase 1B (CPT1B), glycogen synthase 1 (GYS1), hexokinase 2 (HK2), and fatty acid synthase (FASN)]. Differences in MyHC expression were largely corroborated by the histochemical classification, indicating that the contractile protein content is directly regulated by the MyHC genes. A correlation between the muscle contractile and metabolic phenotypes was not established, except for that between the HK2 and MyHC I genes. In conclusion, the present study showed an evident effect of rearing on the longissimus dorsi myofiber contractile phenotype but not the metabolic phenotype. Moreover, obtained data suggest that rearing the Krškopolje pig breed in a conventional system would result in an increased fiber size and a greater proportion of type IIb myofibers, which are known to be negatively correlated with some meat quality traits.
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Affiliation(s)
- Gregor Fazarinc
- Veterinary Faculty, Institute of Preclinical Sciences, University of Ljubljana, Ljubljana, Slovenia
| | - Milka Vrecl
- Veterinary Faculty, Institute of Preclinical Sciences, University of Ljubljana, Ljubljana, Slovenia
| | - Klavdija Poklukar
- Animal Science Department, Agricultural Institute of Slovenia, Ljubljana, Slovenia
| | - Martin Škrlep
- Animal Science Department, Agricultural Institute of Slovenia, Ljubljana, Slovenia
| | - Nina Batorek-Lukač
- Animal Science Department, Agricultural Institute of Slovenia, Ljubljana, Slovenia
| | - Jana Brankovič
- Veterinary Faculty, Institute of Preclinical Sciences, University of Ljubljana, Ljubljana, Slovenia
| | - Urška Tomažin
- Animal Science Department, Agricultural Institute of Slovenia, Ljubljana, Slovenia
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Deng K, Ren C, Fan Y, Pang J, Zhang G, Zhang Y, You P, Wang F. YAP1 regulates PPARG and RXR alpha expression to affect the proliferation and differentiation of ovine preadipocyte. J Cell Biochem 2019; 120:19578-19589. [DOI: 10.1002/jcb.29265] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2019] [Accepted: 06/13/2019] [Indexed: 12/31/2022]
Affiliation(s)
- Kaiping Deng
- Institute of Sheep and Goat Science Nanjing Agricultural University Nanjing China
| | - Caifang Ren
- Institute of Sheep and Goat Science Nanjing Agricultural University Nanjing China
| | - Yixuan Fan
- Institute of Sheep and Goat Science Nanjing Agricultural University Nanjing China
| | - Jing Pang
- Institute of Sheep and Goat Science Nanjing Agricultural University Nanjing China
| | - Guomin Zhang
- Institute of Sheep and Goat Science Nanjing Agricultural University Nanjing China
| | - Yanli Zhang
- Institute of Sheep and Goat Science Nanjing Agricultural University Nanjing China
| | - Peihua You
- Portal Agri‐Industries Co, Ltd Nanjing China
| | - Feng Wang
- National Experimental Teaching Demonstration Center of Animal Science Nanjing Agricultural University Nanjing China
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