GDF-8 (Myostatin)

GDF-8 (Myostatin) — Muscle Growth Inhibitor | Research Reference Compound

GDF-8 (Myostatin) is a member of the TGF-β superfamily that acts as the primary endogenous inhibitor of skeletal muscle growth. Naturally secreted by muscle cells, Myostatin binds ActRIIB receptors and activates SMAD2/3 signalling to suppress satellite cell activation, muscle protein synthesis, and fiber hypertrophy — setting the physiological ceiling on muscle mass. Individuals and animals with natural Myostatin mutations or deletions exhibit extraordinary muscle development, confirming its role as the primary muscle mass regulator.

Reconstitution: Add 0.6% Acetic Acid first to dissolve the powder, then dilute with BAC Water or Sterile Water. Store at 2–8°C.

Key Research Areas

🔬 Muscle Biology Reference Standard

GDF-8 is the essential reference compound for muscle wasting, atrophy, and cachexia research. In vitro and in vivo models use exogenous Myostatin to reliably induce muscle catabolism for studying anti-atrophy interventions, anti-cachexia compounds, and muscle disease models.

🧬 TGF-β/SMAD Pathway Research

GDF-8 is the primary tool for studying ActRIIB-SMAD2/3 signalling — the pathway targeted by therapeutic interventions in Duchenne MD, spinal muscular atrophy, ALS, and cancer cachexia. Research using GDF-8 validates pathway specificity of antagonists like Follistatin, ACE-031, and Bimagrumab.

💪 Compound Validation Studies

GDF-8 is routinely used to establish baseline muscle atrophy in models before testing anti-Myostatin compounds — providing the control condition against which all muscle-promoting research compounds are validated.

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FOR RESEARCH USE ONLY (RUO). Not approved for human or veterinary use. Intended for in vitro and laboratory research only.