Bioactivity | TC14012, a serum-stable derivative of T140, is a selective and peptidomimetic CXCR4 antagonist with an IC50 of 19.3 nM. TC14012 is a potent CXCR7 agonist with an EC50 of 350 nM for recruiting β-arrestin 2 to CXCR7. TC14012 has anti-HIV activity and anti-cancer activity[1][2]. | ||||||
Invitro | TC14012 (1 mM) inhibits more than 95% the infection of the CXCR4-expressing cells by the HXB2 (X4) or 89.6 (dual-tropic) strain whereas TC14012 (1 mM) does not inhibit all the infection of the CCR5-expressing cells by the SF162 (R5) or 89.6 (dualtropic) strain[1]. TC14012 leads to erk 1/2 phosphorylation in U373 cells, which express endogenous CXCR7 but not CXCR4. Upon stimulation with TC14012, CXCR7 and the CXCR7-Cter4 chimera are able to recruit arrestin, whereas CXCR4 and CXCR4-Cter7 remain silent[2]. | ||||||
Name | TC14012 | ||||||
CAS | 368874-34-4 | ||||||
Shortening | RR-{2Nal}-CY-{Cit}-K-{Cit}-PYR-{Cit}-CR-NH2 (Disulfide bridge:Cys4-Cys13) | ||||||
Formula | C90H140N34O19S2 | ||||||
Molar Mass | 2066.42 | ||||||
Appearance | Solid | ||||||
Transport | Room temperature in continental US; may vary elsewhere. | ||||||
Storage | Sealed storage, away from moisture
*In solvent : -80°C, 6 months; -20°C, 1 month (sealed storage, away from moisture) |
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Reference | [1]. H Tamamura, et al. Development of specific CXCR4 inhibitors possessing high selectivity indexes as well as complete stability in serum based on an anti-HIV peptide T140. Bioorg Med Chem Lett. 2001 Jul 23;11(14):1897-902. [2]. Stéphanie Gravel, et al. The peptidomimetic CXCR4 antagonist TC14012 recruits beta-arrestin to CXCR7: roles of receptor domains. J Biol Chem. 2010 Dec 3;285(49):37939-43. |