Diprotin A TFA

• CAT Number: I019677
• CAS Number: 209248-71-5
• Molecular Formula: C19H32F3N3O6
• Molecular Weight: 455.47
• Purity: ≥95%
• Synonyms: (2S,3S)-2-[[(2S)-1-[(2S,3S)-2-amino-3-methylpentanoyl]pyrrolidine-2-carbonyl]amino]-3-methylpentanoic acid;2,2,2-trifluoroacetic acid
• InChI: InChI=1S/C17H31N3O4.C2HF3O2/c1-5-10(3)13(18)16(22)20-9-7-8-12(20)15(21)19-14(17(23)24)11(4)6-2;3-2(4,5)1(6)7/h10-14H,5-9,18H2,1-4H3,(H,19,21)(H,23,24);(H,6,7)/t10-,11-,12-,13-,14-;/m0./s1
• InChIKey: KAUYVJOUHGUZNN-BABXMESMSA-N
• SMILES: CCC(C)C(C(=O)N1CCCC1C(=O)NC(C(C)CC)C(=O)O)N.C(=O)(C(F)(F)F)O

Diprotin A TFA (Ile-Pro-Ile TFA) is an inhibitor of dipeptidyl peptidase IV (DPP-IV)[1].
Diprotin A increases the phosphorylation of Src and vascular endothelial-cadherin (VE-cadherin) in human endothelial cells and disrupts endothelial cell-to-cell junctions, which are attenuated by CXCR4 (receptor of SDF-1α)-blocker or Src-inhibitor[1].
In the model of retinopathy of prematurity, Diprotin A increases not only retinal vascularity but also leakage. Additionally, in the murine diabetic retinopathy model, Diprotin A increases the phosphorylation of Src and VE-cadherin and aggravates vascular leakage in the retinas. Collectively, Diprotin A induces vascular leakage by augmenting the SDF-1α/CXCR4/Src/VE-cadherin signaling pathway[1].

Reference

[1]. Lee CS, et al. Dipeptidyl Peptidase-4 Inhibitor Increases Vascular Leakage in Retina through VE-cadherin Phosphorylation. Sci Rep. 2016 Jul 6;6:29393.
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