Thymosin Beta-4
Thymosin Beta-4 (Tβ4) is an endogenous 43-amino-acid peptide regarded as the principal intracellular actin-sequestering factor, involved in cell migration, neovascularisation and tissue regeneration. It has been studied in dry eye, corneal and wound healing, and cardiac repair (RegeneRx programmes, RGN-259). Thymosin Beta-4 is NOT an approved drug; robust human efficacy data are limited. The grey-market TB-500 is a synthetic fragment/analogue and is distinct from it.
Mechanism of action
Thymosin Beta-4 forms a 1:1 complex with monomeric (G-)actin and is regarded as the principal actin-sequestering factor in many cell types, thereby influencing cytoskeletal dynamics and directional cell migration. Preclinical models additionally describe effects on endothelial cell migration and neovascularisation, as well as activation of survival signalling pathways (including ILK/Akt). The mechanistic evidence derives predominantly from cell-culture and animal models.
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Wat de studies laten zien
Waar studies elkaar tegenspreken
Do the preclinical regenerative effects of Thymosin Beta-4 translate into clinical benefit in humans?
Farmacokinetiek
Veiliger gebruik & risico's
Bekende bijwerkingen uit studies
Interacties & combinaties
Anekdotische waarnemingen
Juridische status per land
Reconstitutie-calculator
Peptiden komen als droog poeder. Eenmaal opgelost in een vloeistof (reconstitutie) beantwoordt deze calculator één enkele vraag: hoeveel stof zit er daarna in één milliliter oplossing?
- 1Voer de hoeveelheid stof van de flacon in (staat op het etiket).
- 2Voer in hoeveel oplosmiddel je toevoegt.
- 3Resultaat = concentratie in mg per mL.
Begeleidende stoffen
Deze begeleidende stoffen betreffen de peptideklasse, niet een specifiek gebruik. Geen aanbeveling, geen dosering.
Studieregister
Thymosin β4 significantly improves signs and symptoms of severe dry eye in a phase 2 randomized trial
Thymosin beta 4 and a synthetic peptide containing its actin-binding domain promote dermal wound repair in db/db diabetic mice and in aged mice
Thymosin beta 4 stimulates directional migration of human umbilical vein endothelial cells
Thymosin beta4 activates integrin-linked kinase and promotes cardiac cell migration, survival and cardiac repair
Bronnen & methode
Ontvang nieuwe studies over Thymosin Beta-4
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