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Myostatin is a myokine that is produced and released by myocytes and acts on muscle cells to inhibit muscle growth. [7] Myostatin is a secreted growth differentiation factor that is a member of the TGF beta protein family. [8] [9] Myostatin is assembled and produced in skeletal muscle before it is released into the blood stream. [10]
The definition and use of the term myokine first occurred in 2003. [5] In 2008, the first myokine, myostatin, was identified. [4] [6] The gp130 receptor cytokine IL-6 (Interleukin 6) was the first myokine found to be secreted into the blood stream in response to muscle contractions.
Myostatin inhibitors were generally able to increase lean body mass and reduce body fat in people with sarcopenia, but the extent to which this translated into functional improvements varied. [ 11 ] Bimagrumab showed effectiveness in increasing lean mass and reducing fat mass in obese individuals in a clinical trial.
Currently, preclinical and clinical studies are also assessing drugs that prevent muscle loss by blocking the action of hormones, such as activin and myostatin, that inhibit muscle growth.
Myostatin, a TGF-beta superfamily member, is a negative regulator of muscle growth. [1] Myostatin binds to ACVR2B and to a lesser extent ACVR2A. In mice that were ACVR2A −/− ( null ) mutants there was an increase in all four muscle groups studied ( pectoralis , triceps , quadriceps , and gastrocnemious / plantaris muscles). [ 1 ]
Non-proliferative, quiescent myosatellite cells, which adjoin resting skeletal muscles, can be identified by their distinct location between sarcolemma and basal lamina, a high nuclear-to-cytoplasmic volume ratio, few organelles (e.g. ribosomes, endoplasmic reticulum, mitochondria, golgi complexes), small nuclear size, and a large quantity of ...
Myostatin-related muscle hypertrophy is a rare genetic condition characterized by reduced body fat and increased skeletal muscle size. [1] Affected individuals have up to twice the usual amount of muscle mass in their bodies, but increases in muscle strength are not usually congruent. [ 2 ]
10220 14561 Ensembl ENSG00000135414 ENSMUSG00000025352 UniProt O95390 Q9Z1W4 RefSeq (mRNA) NM_005811 NM_010272 RefSeq (protein) NP_005802 NP_034402 Location (UCSC) Chr 12: 55.74 – 55.76 Mb Chr 10: 128.72 – 128.73 Mb PubMed search Wikidata View/Edit Human View/Edit Mouse Growth differentiation factor 11 (GDF11), also known as bone morphogenetic protein 11 (BMP-11), is a protein that in ...