fllrn

FLLRN是一种具有生物活性的(PAR1特异性拮抗肽)。

YFLLRNP 是 PAR-1 部分激动剂，具有生物活性。它在低浓度下选择性地激活 G12 13 信号通路，而不会对 Gq 或 Gi 通路产生影响（60 μM）。

TFLLRN-NH2 为具备生物活性的肽类化合物，作用为PAR-1激动剂。

TFLLRNPNDK-NH2 是具备生物活性的肽类化合物，作为凝血酶受体激活肽（PAR-1 激动剂肽）能够可逆地与 PAR-1 结合，模拟凝血酶对底物蛋白通过水解作用产生的“束缚配体”。同凝血酶的作用相似，此肽能够增加液体与蛋白质的渗透性。

TFLLR-NH2 2TFA(197794-83-5(free base)) 是 PAR1 (EC50 :1.9 μM) 的激动剂。

protease-activated receptor-1 (PAR1) antagonist

RWJ-56110 dihydrochloride is a potent, selective, peptide-mimetic inhibitor of PAR-1 activation and internalization (binding IC50=0.44 uM) and shows no effect on PAR-2, PAR-3, or PAR-4. RWJ-56110 dihydrochloride inhibits the aggregation of human platelets induced by both SFLLRN-NH2 (IC50=0.16 μM) and thrombin (IC50=0.34 μM), quite selective relative to U46619 . RWJ-56110 dihydrochloride blocks angiogenesis and blocks the formation of new vessels in vivo. RWJ-56110 dihydrochloride induces cell apoptosis[1][2]. Proteinase-activated receptors (PARs) are a family of G protein-coupled receptors activated by the proteolytic cleavage of their N-terminal extracellular domain, exposing a new amino terminal sequence that functions as a tethered ligand to activate the receptors.RWJ56110 inhibits the aggregation of human platelets induced by both SFLLRN-NH2 (IC50=0.16 μM) and thrombin (IC50=0.34 μM) while being quite selective relative to collagen and the thromboxane mimetic U46619 [1].RWJ-56110 dihydrochloride is fully inhibits thrombin-induced RASMC proliferation with an IC50 value of 3.5 μM. RWJ-56110 dihydrochloride shows blockade of thrombin's action with RASMC calcium mobilization (IC50=0.12 μM), as well as with HMVEC (IC50=0.13 μM) and HASMC calcium mobilization (IC50=0.17 μM)[1].RWJ56110 (0.1-10 μM; 24-96 hours) inhibits endothelial cell growth dose-dependently, with half-maximal inhibitory concentration of RWJ56110 is approximately 10 μM[2].RWJ56110 (0.1-10 μM; 6 hours) inhibits DNA synthesis of endothelial cells in a thymidine incorporation assays. Endothelial cells are in fast-growing state (50-60% confluence), RWJ56110 inhibits cell DNA synthesis in a dose-dependent manner, but when cells that are in the quiescent state (100% confluent), the inhibitory effect of PAR-1 antagonists is much less pronounced[2].RWJ56110 (0.1-10 μM; pretreatment for 15 min) inhibits thrombin-induced Erk1 2 activation in a concentration-dependent manner. However, when endothelial cells are stimulated by FBS (final concentration 4%), it reduces partially the activated levels of Erk1 2[2].RWJ56110 (30 μM; 24 hours) has an inhibitory effect on endothelial cell cycle progression. It reduces the percentage of cells in the S phase, while alterations in the percentages of G1 and G2 M cells are less pronounced[2]. Western Blot Analysis[2] Cell Line: Endothelial cells [1]. Andrade-Gordon, et al.Design, synthesis, and biological characterization of a peptide-mimetic antagonist for a tethered-ligand receptor. oc Natl Acad Sci U S A. 1999 Oct 26;96(22):12257-62. [2]. Panagiota Zania, et al. Blockade of angiogenesis by small molecule antagonists to protease-activated receptor-1: association with endothelial cell growth suppression and induction of apoptosis. J Pharmacol Exp Ther. 2006 Jul;318(1):246-54.

TFLLR-NH2 是选择性的一种PAR1激动剂，EC50值为1.9 μM。

iso-TRAP-6(iso-SFLLRN)是一个由异丝氨酸代替丝氨酸后的六肽，是一种蛋白酶激活受体 1 (PAR1) 激动剂，可通过 PAR-1 激活血小板。iso-TRAP-6 抵抗血浆氨基肽酶降解的能力比TRAP-6 强。

TFLLR-NH2 (TFA) is a selective PAR1 agonist with an EC50 of 1.9 μM [EC50: 1.9 μM (PAR1)].