La folistatina es una proteína que inhibe la miostatina, estudiada en relación con el crecimiento muscular; sin aprobación como medicamento.
Follistatin binds with high affinity to activin and to myostatin (GDF-8), as well as related TGF-β ligands such as GDF-11 and some BMPs, preventing their binding to the activin type-II receptors. Myostatin is a negative regulator of skeletal muscle mass; by sequestering myostatin, its growth-inhibiting signalling is removed (de-repression). Because follistatin additionally neutralises activin, it acts on several muscle-inhibiting pathways at once — in animal models this produced greater muscle gain than knocking out myostatin alone. Several isoforms exist (including FST-288 and FST-315) that differ in tissue binding via heparan sulfate. The FST344 variant used in gene therapy was chosen to reduce binding to off-target structures.
Los péptidos vienen como polvo seco. Una vez disuelto en un líquido (reconstitución), esta calculadora responde a una única pregunta: ¿cuánta sustancia hay en un mililitro de solución después?
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