TB-500 Research Evidence
The TB-500 evidence base: trials, journals, and what the data does not yet show.
Key Findings at a Glance
• TB-500 is one of the few peptides whose low molecular weight allows it to travel long distances through tissues and potentially affect injury sites far from the injection location. • A landmark Nature study showed TB-500 reduces heart attack damage by activating integrin-linked kinase, a survival pathway previously unconnected to healing peptides. • TB-500 works by sequestering G-actin monomers, effectively reprogramming cells to migrate toward wounds rather than simply dividing in place. • Research demonstrates TB-500 shifts macrophages from the inflammatory M1 type to the regenerative M2 type, accelerating the transition from damage control to tissue rebuilding.
Trials and reviews
- RegeneRx RGN-259 dry eyeCornea2019
full-length Tβ4 eye drops, encouraging in early phase 2; later phase 3 trials (ARISE-3, SEER-1, SEER-3) missed · N=96
- Goldstein TB4 reviewAnn NY Acad Sci2012
tissue repair mechanism + animal evidence · review
References
- Thymosin beta4 and tissue regeneration · Goldstein AL, et al. · 2012
- Goldstein AL, Kleinman HK. Minireview: Crosstalk between thymosin β4 and the chemokine network. Ann N Y Acad Sci. 2015. · Martinez JO, Evangelopoulos M, Bhavane R, Acciardo S, Salvatore F, Liu X, Ferrari M, Tasciotti E · 2015
- Thymosin β4 Promotes Dermal Healing. · Kleinman HK, Sosne G · 2016
- Gene ResultTMSB4X thymosin beta 4 X-linked [ (human)] - NCBI
- Philp D, Kleinman HK. Animal studies with thymosin β4, a multifunctional tissue repair and regeneration peptide. Ann N Y Acad Sci. 2012. · Meyer M, Elmer S, Jäncke L · 2012
- Intra-Articular Injection of BPC 157 for Multiple Types of Knee Pain. · Lee E, Padgett B · 2021
- Biological activities of thymosin beta4 defined by active sites in short ... · Sosne G, Qiu P, Goldstein AL, Wheater M · 2010
- Malinda KM, et al. Thymosin beta4 accelerates wound healing. J Invest Dermatol. 1999. · Pinto B, Pierotti R, Canale G, Reali D · 1999
- Identification of glutamine as a potential therapeutic target in dry eye disease. · Chen X, Zhang C, Peng F et al. · 2025
- Thymosin Beta-4 - an overview | ScienceDirect Topics
- Smart N, et al. Thymosin beta4 induces adult epicardial progenitor mobilization and neovascularization. Nature. 2007. · Lindholm P, Voutilainen MH, Laurén J, Peränen J, Leppänen VM, Andressoo JO, Lindahl M, Janhunen S, Kalkkinen N, Timmusk T, Tuominen RK, Saarma M · 2007
- Thymosin beta-4 denotes new directions towards developing prosperous anti-aging regenerative therapies. · Bock-Marquette I, Maar K, Maar S et al. · 2023