检索结果-南通市图书馆

Exosome-mediated regulatory mechanisms in Skeletal muscle:a narrative review

在线全文

学校读者我要写书评

暂无评论

Journal of Zhejiang University-Science B(Biomedicine & Biotechnology) 2023年第1期24卷 1-14页

作者： Zhaolu WANG Jinjin YANG Xiaohui SUN Xi SUN Gongshe YANG Xin’e SHI College of Animal Science and Technology Northwest A&F UniversityYangling 712100China

Skeletal muscle plays a paramount role in physical activity,metabolism,and energy balance,while its homeostasis is being challenged by multiple unfavorable factors such as injury,aging,or obesity.Exosomes,a subset of extracellular vesicles,are now recognized as essential mediators of intercellular communication,holding great clinical potential in the treatment of Skeletal muscle diseases.Herein,we outline the recent research progress in exosomal isolation,characterization,and mechanism of action,and emphatically discuss current advances in exosomes derived from multiple organs and tissues,and engineered exosomes regarding the regulation of physiological and pathological development of Skeletal muscle.These remarkable advances expand our understanding of myogenesis and muscle diseases.Meanwhile,the engineered exosome,as an endogenous nanocarrier combined with advanced design methodologies of biomolecules,will help to open up innovative therapeutic perspectives for the treatment of muscle diseases.

关键词： Exosome Skeletal muscle muscle atrophy Insulin resistance

Clemastine in remyelination and protection of neurons and Skeletal muscle after spinal cord injury

在线全文

学校读者我要写书评

暂无评论

Neural Regeneration Research 2023年第5期18卷 940-946页

作者： Ali Myatich Azizul Haque Christopher Sole Naren L.Banik Department of Microbiology and Immunology Medical University of South CarolinaCharlestonSCUSA Department of Neurosurgery Medical University of South CarolinaCharlestonSCUSA Ralph H.Johnson Veterans Administration Medical Center CharlestonSCUSA Department of Health and Human Performance The CitadelCharlestonSCUSA

Spinal cord injuries affect nearly five to ten individuals per million every year. Spinal cord injury causes damage to the nerves, muscles, and the tissue surrounding the spinal cord. Depending on the severity, spinal injuries are linked to degeneration of axons and myelin, resulting in neuronal impairment and Skeletal muscle weakness and atrophy. The protection of neurons and promotion of myelin regeneration during spinal cord injury is important for recovery of function following spinal cord injury. Current treatments have little to no effect on spinal cord injury and neurogenic muscle loss. Clemastine, an Food and Drug Administration-approved antihistamine drug, reduces inflammation, protects cells, promotes remyelination, and preserves myelin integrity. Recent clinical evidence suggests that clemastine can decrease the loss of axons after spinal cord injury, stimulating the differentiation of oligodendrocyte progenitor cells into mature oligodendrocytes that are capable of myelination. While clemastine can aid not only in the remyelination and preservation of myelin sheath integrity, it also protects neurons. However, its role in neurogenic muscle loss remains unclear. This review discusses the pathophysiology of spinal cord injury, and the role of clemastine in the protection of neurons, myelin, and axons as well as attenuation of Skeletal muscle loss following spinal cord injury.

关键词： axonal damage clemastine myelination neuronal death oligodendrocytes Skeletal muscle spinal cord injury

Single-nucleus profiling unveils a geroprotective role of the Foxo3 in primate Skeletal muscle aging

在线全文

学校读者我要写书评

暂无评论

Protein & Cell 2023年第7期14卷 499-514页

作者： Ying Jing Yuesheng Zuo Yang Yu Liang Sun Zhengrong Yu Shuai Ma Qian Zhao Guoqiang Sun Huifang Hu Jingyi Li Daoyuan Huang Lixiao Liu Jiaming Li Zijuan Xin Haoyan Huang Juan Carlos Izpisua Belmonte Weiqi Zhang Si Wang Jing Qu Guang-Hui Liu State Key Laboratory of Stem Cell and Reproductive Biology Institute of ZoologyChinese Academy of SciencesBeijing 100101China State Key Laboratory of Membrane Biology Institute of ZoologyChinese Academy of SciencesBeijing 100101China Advanced Innovation Center for Human Brain Protection National Clinical Research Center for Geriatric DisordersXuanwu Hospital Capital Medical UniversityBeijing 100053China University of Chinese Academy of Sciences Beijing 100049China Institute for Stem Cell and Regeneration Chinese Academy of SciencesBeijing 100101China CAS Key Laboratory of Genomic and Precision Medicine Beijing Institute of GenomicsChinese Academy of SciencesBeijing 100101China Beijing Institute for Stem Cell and Regenerative Medicine Beijing 100101China China National Center for Bioinformation Beijing 100101China Aging Translational Medicine Center Intemational Center for Aging and CancerBeijing Municipal Geriatric Medical Research CenterXuanwu HospitalCapital Medical UniversityBeijing 100053China Department of Obstetrics and Gynecology Center for Reproductive MedicinePeking University Third HospitalBeijing 100191China The Key Laboratory of Geriatrics Beijing Institute of GeriatricsInstitute of Geriatric MedicineChinese Academy of Medical SciencesBeijing Hospital/National Center of Gerontology of National Health CommissionBeijing 100730China Clinical Stem Cell Research Center Peking University Third HospitalBeijing 100191China Department of Orthopaedics Peking University First HospitalBeijing 100034China Sino-Danish College University of Chinese Academy of SciencesBeijing 101408China Sino-Danish Center for Education and Research Beijing 101408China Altos Labs Inc.San DiegoCA 94022USA The Fifth People's Hospital of Chongqing Chongqing 400062China

Age-dependent loss of Skeletal muscle mass and function is a feature of sarcopenia,and increases the risk of many aging-related metabolic diseases.Here,we report phenotypic and single-nucleus transcriptomic analyses of non-human primate Skeletal muscle aging.A higher transcriptional fluctuation was observed in myonuclei relative to other interstitial cell types,indicating a higher susceptibility of Skeletal muscle fiber to aging.We found a downregulation of Foxo3 in aged primate Skeletal muscle,and identi-fied FOxo3 as a hub transcription factor maintaining Skeletal muscle homeostasis.Through the establishment of a complementary experimental pipeline based on a human pluripotent stem cell-derived myotube model,we revealed that silence of Foxo3 accelerates human myotube senescence,whereas genetic activation of endogenous FOxO3 alleviates human myotube aging.Altogether,based on a combination of monkey Skeletal muscle and human myotube aging research models,we unraveled the pivotal role of the FOxO3 in safeguarding primate Skeletal muscle from aging,providing a comprehensive resource for the development of clinical diagnosis and targeted therapeutic interventions against human Skeletal muscle aging and the onset of sarcopenia along with aging-relateddisorders.

关键词： single-nucleus RNA sequencing primate aging Skeletal muscle FOxO3

Selenoproteins synergistically protect porcine Skeletal muscle from oxidative damage via relieving mitochondrial dysfunction and endoplasmic reticulum stress

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

畜牧与生物技术杂志:英文版 2023年第5期14卷 2180-2196页

作者： Jinzhong Jing Ying He Yan Liu Jiayong Tang Longqiong Wang Gang Jia Guangmang Liu Xiaoling Chen Gang Tian Jingyi Cai Lianqiang Che Bo Kang Hua Zhao Key Laboratory for Animal Disease‑Resistance Nutrition of Ministry of Education of China Ministry of Agriculture and Rural Affairsof Sichuan ProvinceAnimal Nutrition InstituteSichuan Agricultural UniversityChengdu 611130SichuanChina College of Animal Science and Technology Sichuan Agricultural UniversityChengdu 611130SichuanChina

Background The Skeletal muscle of pigs is vulnerable to oxidative damage,resulting in growth retardation.Selenoproteins are important components of antioxidant systems for animals,which are generally regulated by dietary selenium(Se)level.Here,we developed the dietary oxidative stress(DOS)-inducing pig model to investigate the protective effects of selenoproteins on DOS-induced Skeletal muscle growth retardation.Results Dietary oxidative stress caused porcine Skeletal muscle oxidative damage and growth retardation,which is accompanied by mitochondrial dysfunction,endoplasmic reticulum(ER)stress,and protein and lipid metabolism disorders.Supplementation with Se(0.3,0.6 or 0.9 mg Se/kg)in form of hydroxy selenomethionine(OH-SeMet)linearly increased muscular Se deposition and exhibited protective effects via regulating the expression of selenotranscriptome and key selenoproteins,which was mainly reflected in lower ROS levels and higher antioxidant capacity in Skeletal muscle,and the mitigation of mitochondrial dysfunction and ER stress.What’s more,selenoproteins inhibited DOS induced protein and lipid degradation and improved protein and lipid biosynthesis via regulating AKT/mTOR/S6K1 and AMPK/SREBP-1 signalling pathways in Skeletal muscle.However,several parameters such as the activity of GSH-Px and T-SOD,the protein abundance of JNK2,CLPP,SELENOS and SELENOF did not show dose-dependent changes.Notably,several key selenoproteins such as MSRB1,SELENOW,SELENOM,SELENON and SELENOS play the unique roles during this protection.Conclusions Increased expression of selenoproteins by dietary OH-SeMet could synergistically alleviate mitochondrial dysfunction and ER stress,recover protein and lipid biosynthesis,thus alleviate Skeletal muscle growth retardation.Our study provides preventive measure for OS-dependent Skeletal muscle retardation in livestock husbandry.

关键词： Dietary oxidative stress Endoplasmic reticulum stress Growth retardation Mitochondrial dysfunction Selenoproteins Skeletal muscle

Gestational heat stress alters Skeletal muscle gene expression profiles and vascularity in fetal pigs in a sexually dimorphic manner

在线全文

学校读者我要写书评

暂无评论

Journal of Animal Science and Biotechnology 2022年第6期13卷 1785-1798页

作者： Weicheng Zhao Mark P.Green Christina D.Marth Fan Liu Hieu H.Le Gordon S.Lynch Alan W.Bell Brian J.Leury Frank R.Dunshea Jeremy J.Cottrell School of Agriculture and Food Faculty of Veterinary and Agricultural SciencesThe University of MelbourneParkvilleVIC 3010Australia School of BioSciences Faculty of ScienceThe University of MelbourneParkvilleVIC 3010Australia Melbourne Veterinary School Faculty of Veterinary and Agricultural SciencesThe University of MelbourneWerribeeVIC 3030Australia Rivalea Australia Pty Ltd CorowaNSW 2646Australia Centre for muscle Research Department of Anatomy and PhysiologyThe University of MelbourneParkville 3010Australia Department of Animal Science Cornell UniversityIthacaNY 14853-4801USA Faculty of Biological Sciences The University of LeedsLeeds LS29JTUK

Background: There is evidence that sow heat stress(HS) during gestation affects fetal development with implications for impaired muscle growth. We have previously demonstrated that maternal HS during early to midgestation compromised muscle fibre hyperplasia in developing fetal pigs. Thus, we hypothesised these phenotypic changes are associated with a change in expression of genes regulating fetal Skeletal muscle development and metabolism. To test this, at d 60 of gestation, RNA sequencing and immunohistochemistry were performed on fetal longissimus dorsi(LD) muscle biopsies collected from pregnant gilts that had experienced either thermoneutral control(CON, 20 ℃, n = 7 gilts, 18 LD samples) or controlled HS(cyclic 28 to 33 ℃, n = 8 gilts, 23 LD samples)conditions for 3 weeks.Results: A total of 282 genes were differentially expressed between the HS and CON groups in female LD muscles(false discovery rate(FDR) ≤ 0.05), whereas no differentially expressed genes were detected in male LD muscles between the two groups(FDR > 0.05). Gestational HS increased the expression of genes associated with transcription corepressor activity, adipogenesis cascades, negative regulation of angiogenesis and pro-inflammatory signalling in female LD muscles. Immunohistochemical analyses revealed a decreased muscle vascularity density in fetuses from HS group for both sexes compared to those from the CON group(P = 0.004).Conclusions: These results reveal gilt HS during early to mid-gestation altered gene expression profiles in fetal LD muscles in a sexually dimorphic manner. The molecular responses, including transcription and angiogenesis repressions and enhanced adipogenesis cascades, were exclusively observed in females. However, the associated reductions in muscle vascularity were observed independently of sexes. Collectively this may indicate female fetal pigs are more adaptive to gestational HS in terms of gene expression changes, and/or there may be sexually dimorphic differences with respect to the timing of muscle molecular

关键词： Adipogenesis Angiogenesis Fetal pig Gestation Heat stress Sexual dimorphism Skeletal muscle Sows

SWIR FluorescenceImaging In Vivo Monitoring and Evaluating Implanted M2 Macrophages in Skeletal muscle Regeneration

在线全文

学校读者我要写书评

暂无评论

Engineering 2024年第2期33卷 283-294页

作者： Mo Chen Yuzhou Chen Sijia Feng Shixian Dong Luyi Sun Huizhu Li Fuchun Chen Nguyen Thi Kim Thanh Yunxia Li Shiyi Chen You Wang Jun Chen Sports Medicine Institute of Fudan University Department of Sports MedicineHuashan HospitalFudan UniversityShanghai 200040China Department of Bone and Joint Surgery Department of OrthopedicsRenji HospitalSchool of MedicineShanghai Jiaotong UniversityShanghai 200127China Department of Anatomy and Physiology School of MedicineShanghai Jiao Tong UniversityShanghai 200025China Key Laboratory of Infrared System Detection&Imaging Technology Shanghai Institute of Technical PhysicsChinese Academy of SciencesShanghai 200083China Biophysics Group Department of Physics and AstronomyUniversity College LondonLondon WC1E 6BTUK Healthcare Biomagnetic and Nanomaterials Laboratories University College LondonLondon W1S 4BSUK

Skeletal muscle has a robust regeneration ability that is impaired by severe injury,disease,and aging.resulting in a decline in Skeletal muscle function.Therefore,improving Skeletal muscle regeneration is a key challenge in treating Skeletal muscle-related disorders.Owing to their significant role in tissue regeneration,implantation of M2 macrophages(M2MФ)has great potential for improving Skeletal muscle regeneration.Here,we present a short-wave infrared(SWIR)fluorescence imaging technique to obtain more in vivo information for an in-depth evaluation of the Skeletal muscle regeneration effect after M2MФtransplantation.SWIR fluorescence imaging was employed to track implanted M2MФin the injured Skeletal muscle of mouse models.It is found that the implanted M2MФaccumulated at the injury site for two weeks.Then,SWIR fluorescence imaging of blood vessels showed that M2MФimplantation could improve the relative perfusion ratio on day 5(1.09±0.09 vs 0.85±0.05;p=0.01)and day 9(1.38±0.16 vs 0.95±0.03;p=0.01)post-injury,as well as augment the degree of Skeletal muscle regencration on day 13 post-injury.Finally,multiple linear regression analyses determined that post-injury time and relative perfusion ratio could be used as predictive indicators to evaluate Skeletal muscle regeneration.These results provide more in vivo details about M2MФin Skeletal muscle regeneration and confirm that M2MФcould promote angiogenesis and improve the degree of Skeletal muscle repair,which will guide the research and development of M2MФimplantation to improve Skeletal muscle regeneration.

关键词： In vivo Short-wave infrared Skeletal muscle Macrophage Regeneration

MiR-743a-5p regulates differentiation of myoblast by targeting Mob1b in Skeletal muscle development and regeneration

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Genes & Diseases 2022年第4期9卷 1038-1048页

作者： YongSheng Zhang YiLong Yao ZiShuai Wang Dan Lu YuanYuan Zhang Adeyinka Abiola Adetula SiYuan Liu Min Zhu YaLan Yang XinHao Fan MuYa Chen YiJie Tang Yun Chen YuWen Liu GuoQiang Yi ZhongLin Tang Shenzhen Branch Guangdong Laboratory for Lingnan Modern AgricultureAgricultural Genomics Institute at ShenzhenChinese Academy of Agricultural SciencesShenzhenGuangdong 518124PR China Genome Analysis Laboratory of the Ministry of Agriculture Agricultural Genomics Institute at ShenzhenChinese Academy of Agricultural SciencesShenzhenGuangdong 518124PR China Institute of Animal Science Chinese Academy of Agricultural SciencesBeijing 100193PR China

The microRNAs (miRNAs) play an important role in regulating myogenesis by targeting mRNA. However, the understanding of miRNAs in Skeletal muscle development and diseases is unclear. In this study, we firstly performed the transcriptome profiling in differentiating C2C12 myoblast cells. Totally, we identified 187 miRNAs and 4260 mRNAs significantly differentially expressed that were involved in myoblast differentiation. We carried out validation of microarray data based on 5 mRNAs and 5 miRNAs differentially expressed and got a consistent result. Then we constructed and validated the significantly up- and down-regulated mRNA-miRNA interaction networks. Four interaction pairs (miR-145a-5p-Fscn1, miR-200c-5p-Tmigd1, miR-27a-5p-Sln and miR-743a-5p-Mob1b) with targeted relationships in differentiated myoblast cells were demonstrated. They are all closely related to myoblast development. Gene Ontology (GO) and Kyoto Encyclopedia of Genes and Genomes (KEGG) analysis indicated cell cycle signals important for exploring Skeletal muscle development and disease. Functionally, we discovered that miR-743a targeting gene Mps One Binder Kinase Activator-Like 1B (Mob1b) gene in differentiated C2C12. The up-regulated miR-743a can promote the differentiation of C2C12 myoblast. While the down-regulated Mob1b plays a negative role in differentiation. In addition, the expression profile of miR-743a and Mob1b are consistent with Skeletal muscle recovery after Cardiotoxin (CTX) injury. Our study revealed that miR-743a-5p regulates myoblast differentiation by targeting Mob1b involved in Skeletal muscle development and regeneration. Our findings made a further exploration for mechanisms in myogenesis and might provide potential possible miRNA-based target therapies for Skeletal muscle regeneration and disease in the near future.

关键词： Differentiation miR 743a-5p Mob 1b Myoblast Skeletal muscle .Transcriptome

Effects of PGC-1αoverexpression on the myogenic response during Skeletal muscle regeneration

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Sports Medicine and Health Science 2022年第3期4卷 198-208页

作者： Tyrone A.Washington Wesley S.Haynie Eleanor R.Schrems Richard A.Perry Jr. Lemuel A.Brown Breanna M.Williams Megan E.Rosa-Caldwell David E.Lee Jacob L.Brown Exercise muscle Biology Laboratory Exercise Science Research CenterDepartment of HealthHuman Performance and RecreationUniversity of ArkansasFayettevilleAR72701USA Cachexia Research Laboratory Exercise Science Research CenterDepartment of HealthHuman Performance and RecreationUniversity of ArkansasFayettevilleAR72701USA

The ability of Skeletal muscle to regenerate from injury is crucial for locomotion,metabolic health,and quality of life.Peroxisome proliferator-activated receptor-γcoactivator-1α(PGC1A)is a transcriptional coactivator required for mitochondrial biogenesis.Increased mitochondrial biogenesis is associated with improved muscle cell differentiation,however PGC1A's role in Skeletal muscle regeneration following damage requires further investigation.The purpose of this study was to investigate the role of Skeletal muscle-specific PGC1A overexpression during regeneration following damage.22 C57BL/6J(WT)and 26 PGC1A muscle transgenic(A1)mice were injected with either phosphate-buffered saline(PBS,uninjured control)or Bupivacaine(MAR,injured)into their tibialis anterior(TA)muscle to induce Skeletal muscle damage.TA muscles were extracted 3-or 28-days postinjury and analyzed for markers of regenerative myogenesis and protein turnover.Pgc1a mRNA was~10–20 fold greater in A1 mice.Markers of protein synthesis,AKT and 4EBP1,displayed decreases in A1 mice compared to WT at both timepoints indicating a decreased protein synthetic response.Myod mRNA was~75%lower compared to WT 3 days post-injection.WT mice exhibited decreased cross-sectional area of the TA muscle at 28 days post-injection with bupivacaine compared to all other groups.PGC1A overexpression modifies the myogenic response during regeneration.

关键词： PGC-1α Skeletal muscle muscle regeneration Satellite cells Protein turnover p38 MAPK

Kaempferol improves glucose uptake in Skeletal muscle via an AMPK-dependent mechanism

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Food Science and Human Wellness 2023年第6期12卷 2087-2094页

作者： William T.Moore Jing Luo Dongmin Liu Department of Human Nutrition Foods and ExerciseCollege of Agricultural and Life SciencesVirginia TechBlacksburg 24060USA Department of Biology and Chemistry Liberty UniversityLynchburg 24515USA Department of Human Nutrition Foods and ExerciseVirginia Tech1981 Kraft DriveCorporate Research CenterBlacksburg 24061USA

Insulin resistance is a hallmark of type-2 diabetes(T2D)pathogenesis.Because Skeletal muscle(SkM)is the major tissue for insulin-mediated glucose disposal,insulin resistance in SkM is considered a major risk factor for developing T2D.Thus,the identifi cation of compounds that enhance the ability of SkM to take up glucose is a promising strategy for preventing T2D.Our previous work showed that kaempferol,a fl avonol present in many foods,improves insulin sensitivity in obese mice,however,the mechanism underlying this beneficial action remains unclear.Here,we show that kaempferol directly stimulates glucose uptake and prevents lipotoxicity-impaired glucose uptake in primary human SkM.Kaempferol stimulates Akt phosphorylation in a time-dependent manner in human SkM cells.The effect of kaempferol on glucose uptake was blunted by inhibition of glucose transporter 4,phosphoinositide 3-kinase(PI3K),or AMPK.In addition,kaempferol induced AMPK phosphorylation,and inhibition of AMPK prevented kaempferol-stimulated Akt phosphorylation.In vivo,kaempferol administration induced rapid glucose disposal accompanied with increased Akt and AMPK phosphorylation in SkM tissue of the mice.Taken together,these fi ndings suggest that kaempferol stimulates glucose uptake in SkM via an AMPK/Akt dependent mechanism,and it may be a viable therapeutic agent for insulin resistance.

关键词： Kaempferol Skeletal muscle AMPK Akt Insulin resistance