產(chǎn)品概述
白細(xì)胞介素17(也稱 CTLA-8)是T細(xì)胞表達(dá)的一種多效性細(xì)胞因子。IL-17和IL-17受體(IL-17R)結(jié)合,IL-17R不和任何已知的受體家族的成員具有同源性。IL-17的表達(dá)受活化的T細(xì)胞的限制, IL-17R 的mRNA廣泛分布在組織中,在已檢測過的所有細(xì)胞和組織中均檢測到IL-17R的mRNA。人的IL-17R 的基因位于22號(hào)染色體上,它是由866個(gè)氨基酸組成的I型膜糖蛋白,包括293個(gè)氨基酸組成胞外結(jié)構(gòu)域、21個(gè)氨基酸組成的跨膜結(jié)構(gòu)域和一個(gè)525個(gè)氨基酸組成的胞質(zhì)尾。人IL-17R的氨基酸序列和小鼠的IL-17R具有69%的同源性。
產(chǎn)品原理
本實(shí)驗(yàn)采用雙抗體夾心ELISA法??谷薎L-17R單抗包被于酶標(biāo)板上,標(biāo)本和標(biāo)準(zhǔn)品中的IL-17R會(huì)與單抗結(jié)合形成免疫復(fù)合物,游離的成分被洗去;加入生物素化的抗人IL-17R抗體,生物素化抗人IL-17R抗體與酶標(biāo)板上結(jié)合的標(biāo)準(zhǔn)品或樣本中的IL-17R結(jié)合而形成免疫復(fù)合物,游離的成分被洗去;加入辣根過氧化物酶標(biāo)記的親合素,親合素與生物素特異性結(jié)合,游離的成分被洗去。加入顯色底物(顯色劑),若反應(yīng)孔中有IL-17R,辣根過氧化物酶會(huì)使無色的顯色劑變藍(lán),加終止液變黃。在450nm處測OD值, IL-17R濃度與OD450值之間呈正相關(guān),可通過繪制標(biāo)準(zhǔn)曲線求出標(biāo)本中IL-17R濃度。
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