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GDF-8 Description

Myostatin (GDF-8) is a member of the transforming growth factor-beta (TGF-beta) superfamily that is highly expressed in skeletal muscle, and myostatin loss-of-function leads to doubling of skeletal muscle mass. Myostatin-deficient mice have been used as a model for studying muscle-bone interactions, and here we review the skeletal phenotype associated with altered myostatin signaling. It is now known that myostatin is a key regulator of mesenchymal stem cell proliferation and differentiation, and mice lacking the myostatin gene show decreased body fat and a generalized increase in bone density and strength.

The increase in bone density is observed in most anatomical regions, including the limbs, spine, and jaw, and myostatin inhibitors have been observed to significantly increase bone formation. Myostatin is also expressed in the early phases of fracture healing, and myostatin deficiency leads to increased fracture callus size and strength. Together, these data suggest that myostatin has direct effects on the proliferation and differentiation of osteoprogenitor cells, and that myostatin antagonists and inhibitors are likely to enhance both muscle mass and bone strength.

Myostatin Usage

A growth factor that regulates the size of muscles beginning in early embryonic development and continuing throughout life. Myostatin acts by inhibiting the growth of muscles, It prevents them from growing too large. Myostatin is also known as growth and differentiation factor 8 (GDF-8).

How does GDF-8 work?

Some studies show that the lack of myostatin gives rise to impressive results in the increase of muscle mass both in humans and in animals. In bones specifically, the lack of myostatin increases its mineral density, resulting in an increase of the calcium levels of the organism. GDF-8 is stored in bones and it is necessary for the correct functionality of the heart, muscles, and nerves as well as for blood clotting.

While using this recombinant myostatin propeptide, it was found that collagen-rich fibrous tissue was plentiful in the injured area of the individual’s treated muscle, which has as a result the improvement of the regenerative capacity of the body.

Myostatin deficiency increases the ostegenic potential (formation of bone tissue) of bone marrow. There have been some studies related to the healing properties of stem cells originated in the bone marrow that has an auto regeneration capacity. This benefit can be promoted by blocking Myostatin on humans.

Myostatin inhibitors are used on muscular dystrophy treatment in the attempt to accomplish the muscle regeneration. Myostatin propeptide enhances muscle regeneration, increases myofiber hypertrophy (an increase in size of skeletal muscle through a growth in size of its component cells) and decreases fibrosis (formation of excess fibrous connective tissue, which can obliterate the function of the affected limb) in muscle healing.

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