What is TB-500?
TB-500 is a 43 amino acid synthetic analog of thymosin B-4 (TB-4), which occurs naturally in nearly all mammalian cells. TB-500 is known for its effects on actin, cell migration, and wound healing. Animal models and in vitro studies have shown that TB-500 can improve blood vessel growth, accelerate wound healing, reduce inflammation, and promote production of extracellular matrix. The peptide is currently being studied for its ability to reduce oxidative stress in spinal cord injuries, improve recovery after heart attacks, and have a variety of anti-aging effects.
TB-500 Mechanism of Action
TB-500 is the active domain of TB-4 and primarily acts as an actin-binding protein. Actin is an important component of cellular structure and makes up microfilaments. Microfilaments are responsible for giving cells their shape, protecting the integrity of cell membranes, allowing cells to move/migrate, and certain steps in cell reproduction. Actin is also one of the main components of muscle protein. Without actin, muscles cannot contract. Actin-binding proteins such as TB-4 sequester actin monomers (single units of actin), thereby protecting them from degradation and allowing them to polymerize into microfil ...
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