Focus: Angiogenesis, actin remodeling, and cellular recovery.
BPC-157 (Pentadecapeptide)
Primary Research Application: Gastrointestinal integrity and tendon/ligament healing models.
Mechanism: Derived from a gastric protection protein, BPC-157 influences the Nitric Oxide (NO) system and growth factor expression (VEGF). It is heavily studied for its ability to protect endothelium and accelerate soft tissue repair in explant models.
TB-500 (Thymosin Beta-4 Fragment)
Primary Research Application: Cellular motility and actin polymerization.
Mechanism: TB-500 is a synthetic fragment of Thymosin Beta-4. Researchers use it to study how cells migrate to sites of injury and the role of actin in tissue regeneration and cellular structure.
Neuroendocrine & Reproductive Signaling
Focus: Hypothalamic control, libido, and pigmentation pathways.
Kisspeptin-10
Primary Research Application: Upstream regulation of the HPG axis.
Mechanism: Kisspeptin-10 activates the GPR54 receptor. It acts as the “master switch” for reproduction, triggering the release of GnRH.
Research Utility: Used to restart bio-rhythms in models of hypogonadism or to study the specific calcium signaling dynamics of GnRH neurons.
PT-141 (Bremelanotide)
Primary Research Application: Central nervous system (CNS) modulation of sexual behavior.
Mechanism: A metabolite of Melanotan II, PT-141 is highly selective for MC3R and MC4R melanocortin receptors in the brain.
Key Distinction: It has minimal activity at the MC1R (pigmentation) receptor, making it a clean tool for studying libido and arousal mechanisms without skin darkening effects.
Melanotan I vs. Melanotan II
- MT-1 (Linear): Highly selective for MC1R. Used strictly for photobiology and pigmentation studies.
- MT-2 (Cyclic): A broad-spectrum agonist hitting MC1, MC3, MC4, and MC5 receptors. Used for aggressive study of systemic melanocortin activation.
