Proteinase-activated receptor 2 (PAR(2)): development of a ligand-binding assay correlating with activation of PAR(2) by PAR(1)- and PAR(2)-derived peptide ligands.

Proteinase-activated receptor 2 (PAR(2)): development of a ligand-binding assay correlating with activation of PAR(2) by PAR(1)- and PAR(2)-derived peptide ligands.
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蛋白酶激活受体 2 (PAR(2)):开发与 PAR(1) 和 PAR(2) 衍生肽配体激活 PAR(2) 相关的配体结合测定。

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发表时间:
1999
影响因子:
3.5
通讯作者:
M. Hollenberg
M. Hollenberg
中科院分区:
医学2区
文献类型:
--
作者:
B. Al‐Ani;M. Saifeddine;A. Kawabata;B. Renaux;S. Mokashi;M. Hollenberg

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大鼠蛋白酶激活受体(PAR)(2)表达细胞系的建立(KNRK-rPAR(2))进行构效关系研究(升高的细胞内Ca(2+))的一系列:1)PAR(1)衍生的受体活化配体(PAR(1)-AP)[SFLLR(P5),SFLLR-NH(2)(P5-NH(2)),SFLLRNP(P7),SFLLRNP-NH(2)(P7-NH(2)),和TFLLR-NH(2)(TF-NH(2))]和2)PAR(2)衍生的活化肽(PAR(2)-AP)[SLIGRL-NH(2)(SL-NH(2))、SLIGR-NH(2)(GR-NH(2))和SLIGKV-NH(2)(KV-NH(2))]。将PAR-AP的活性与PAR(2)-AP类似物trans-cinnamoyl-Leu-Ile-Gly-Arg-Leu-Orn-NH(2)tc-NH(2)进行比较,后者作为[(3)H]丙酰基衍生物([(3)H]丙酰基-tc-NH(2))用于开发PAR(2)的放射性配体结合测定。在Ca(2+)-信号传导测定中PAR-AP的相对效力为tc-NH(2)= SL-NH(2)> KV-NH(2),与P5-NH(2)> GR-NH(2)> P7-NH(2)> P7 > P5 > TF-NH(2)一致。反向序列PAR-AP、LSIGRL-NH(2)(LS-NH(2))、LRGILS-NH(2)(LR-NH(2))、FSLLRY-NH(2)(FSY-NH(2))和FSLLR-NH(2)(FS-NH(2))以及爪蟾PAR(1)-AP TFRIFD-NH(2)无活性。这些肽的相对生物学效力与它们竞争[(3)H]丙酰基-tc-NH(2)(tc-NH(2)= SL-NH(2)> GR-NH(2)与P5-NH(2)> P5一致)与KNRK-rPAR(2)细胞结合的能力雅阁,而无活性肽(FS-NH(2); LR-NH(2))没有显示出明显的结合竞争。因此,我们的数据验证了用于PAR(2)研究的配体结合试验,并表明PAR(1)-AP激活大鼠PAR(2)的相对生物效力与其激活人PAR(1)的能力平行。PAR-AP的相对受体结合活性,尽管与其相对生物活性大体一致,但指出几种PAR-AP之间内在受体激活活性的差异。我们已经开发的结合试验应证明用于PAR(2)-配体相互作用的进一步研究。
A cloned rat proteinase-activated receptor (PAR)(2)-expressing cell line (KNRK-rPAR(2)) was used to study the structure-activity relationships (elevated intracellular Ca(2+)) for a series of: 1) PAR(1)-derived receptor-activating ligands (PAR(1)-APs) [SFLLR (P5), SFLLR-NH(2) (P5-NH(2)), SFLLRNP (P7), SFLLRNP-NH(2) (P7-NH(2)), and TFLLR-NH(2) (TF-NH(2))] and 2) PAR(2)-derived-activating-peptides (PAR(2)-APs) [SLIGRL-NH(2) (SL-NH(2)), SLIGR-NH(2) (GR-NH(2)), and SLIGKV-NH(2) (KV-NH(2))]. The activities of the PAR-APs were compared with the PAR(2)-AP analog trans-cinnamoyl-Leu-Ile-Gly-Arg-Leu-Orn-NH(2) tc-NH(2)), which as a [(3)H]propionyl derivative ([(3)H]propionyl-tc-NH(2)) was used to develop a radioligand-binding assay for PAR(2). The relative potencies of the PAR-APs in the Ca(2+)-signaling assay were tc-NH(2) = SL-NH(2) > KV-NH(2) congruent with P5-NH(2) > GR-NH(2) > P7-NH(2) > P7 > P5 > TF-NH(2). The reverse sequence PAR-APs, LSIGRL-NH(2) (LS-NH(2)), LRGILS-NH(2) (LR-NH(2)), FSLLRY-NH(2) (FSY-NH(2)), and FSLLR-NH(2) (FS-NH(2)), as well as the Xenopus PAR(1)-AP TFRIFD-NH(2), were inactive. The relative biological potencies of the peptides were in accord with their ability to compete for the binding of [(3)H]propionyl-tc-NH(2) (tc-NH(2) = SL-NH(2) > GR-NH(2) congruent with P5-NH(2) > P5) to KNRK-rPAR(2) cells, whereas inactive peptides (FS-NH(2); LR-NH(2)) showed no appreciable binding competition. Our data therefore validate a ligand-binding assay for the use in studies of PAR(2) and indicate that the relative biological potencies of the PAR(1)-APs for activating rat PAR(2) parallel their ability to activate human PAR(1). The relative receptor-binding activities of the PAR-APs, although in general agreement with their relative biological activities, point to differences in the intrinsic receptor-activating activities between the several PAR-APs. The binding assay we have developed should prove of use for the further study of PAR(2)-ligand interactions.
DOI: --
发表时间: 1992
期刊: The Journal of biological chemistry
影响因子: --
作者:
VassalloJr,RR;Kieber-Emmons,T;Cichowski,K;Brass,LF
通讯作者: Brass,LF
通过免疫细胞化学流式细胞术技术对眼细胞的 EGF 细胞表面受体进行定量。
DOI: --
发表时间: 1992
影响因子: 4.4
作者:
Lopez,JG;Chew,SJ;Thompson,HW;Malter,JS;Insler,MS;Beuerman,RW
通讯作者: Beuerman,RW
DOI: 10.1172/jci119658
发表时间: 1997-09-15
影响因子: 15.9
作者:
Corvera, CU;Dery, O;Bunnett, NW
通讯作者: Bunnett, NW