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Cell proliferation is the process by which cells divide and multiply to produce more cells. This process is essential for the growth and development of all organisms. Peptides are short chains of amino acids that play a variety of roles in the body, including cell proliferation.
Several peptides have been shown to promote cell proliferation, including insulin-like growth factor 1 (IGF-1), epidermal growth factor (EGF), and platelet-derived growth factor (PDGF). IGF-1 and EGF are hormones that bind to receptors on the surface of cells and stimulate them to divide. PDGF is a protein that promotes the division of blood cells and helps to repair damaged tissues.
Peptides can also inhibit cell proliferation. For example, transforming growth factor beta (TGFβ) is a peptide that inhibits the growth of many types of cells, including cancer cells. TGFβ prevents cells from dividing and causes them to undergo apoptosis, or programmed cell death.
Cell proliferation is a complex process regulated by many different factors. Peptides play an important role in this process by promoting or inhibiting cell division.