lys p 1

Lys-P-1 is a bioactive chemical.

Lys(CO-C3-p-I-Ph)-O-tBu, a pharmacokinetic modifier (PK modifier), enhances the pharmacokinetic properties of PSMA ligand molecules by increasing their residence time in plasma through improved binding to albumin and reducing absorption by the salivary glands, potentially extending the active compound's half-life. Moreover, Ac-PSMA-trillium is an effective PSMA-targeting compound for various biological applications when modified with different radioactive isotopes. When labeled with 111 In, it serves as a DOTA chelating agent and imaging agent. Alternatively, when labeled with 225 Ac, it acts as a Macropa chelator for targeted radionuclide therapy (TRT) in researching metastatic castration-resistant prostate cancer (mCRPC) [1] [2].

DOTA-LM3 TFA is a somatostatin receptor (SSTR) antagonist with the molecular structure p-Cl-Phe-cyclo(D-Cys-Tyr-D-4-amino-Phe(carbamoyl)-Lys-Thr-Cys)D-Tyr-NH2, used for in vivo tumor tracing via isotopic labeling, such as 177Lu-DOTA-LM3 TFA and 68Ga-DOTA-LM3 TFA. The 68Ga-labeled compound shows favorable biodistribution, high tumor uptake, good tumor retention, and minimal safety concerns, while the 177Lu-labeled variant targets DOTATOC-negative liver metastases, including pancreatic NET and extensive tumor thrombosis [1] [2].

DOTA-LM3 is a somatostatin receptor (SSTR) antagonist, with LM3 denoting the peptide sequence p-Cl-Phe-cyclo(D-Cys-Tyr-D-4-amino-Phe(carbamoyl)-Lys-Thr-Cys)D-Tyr-NH2. It is utilized in the isotopic labeling of tumors for in vivo tracing, notably with 177Lu-DOTA-LM3 and 68Ga-DOTA-LM3. The derivative 68Ga-DOTA-LM3 exhibits promising biodistribution, high tumor uptake, efficient tumor retention, and minimal safety concerns, while 177Lu-DOTA-LM3 is applied in research on DOTATOC-negative liver metastases including pancreatic NET and extensive tumor thrombosis [1] [2].

N-p-Tosyl-Gly-Pro-Lys-pNA is a colorimetric substrate for plasmin.1,2,3Plasmin binds and hydrolyzes N-p-tosyl-Gly-Pro-Lys-pNA to releasep-nitroanilide (pNA), which can be quantified by colorimetric detection at 405 nm as a measure of plasmin activity. 1.Jespersen, J., Gram, J., and Astrup, T.The autodigestion of human plasmin follows a bimolecular mode of reaction subject to product inhibitionThromb. Res.41(3)395-404(1986) 2.Kim, S.H., and Choi, N.S.Electrophoretic analysis of protease inhibitors in fibrin zymographyAnal. Biochem.270(1)179-181(1999) 3.Chen, T., and Rael, E.D.Purification of M5, a fibrinolytic proteinase from Crotalus molossus molossus venom that attacks complementInt. J. Biochem. Cell Biol.29(5)789-799(1997)

Reversin 205 ([Boc-Glu(Obzl)]2-Lys-Ome) serves as an inhibitor of P-glycoprotein (ABCB1) and functions as a peptide chemosensitizer [1].