產(chǎn)品概述
IL-23是與IL-12相關(guān)的異源二聚體細(xì)胞因子,由兩個(gè)二硫鍵連接的亞基組成,一個(gè)是IL-23獨(dú)特的p19 亞基,一個(gè)是與IL-12相同的p40亞基。p19亞基具有IL-12的p35亞基的同源性,與其他單鏈的細(xì)胞因子如IL-6和IL-11也有同源性。人的p19亞基的cDNA編碼189個(gè)氨基酸殘基的前體蛋白,推斷有19個(gè)氨基酸的信號(hào)肽和170個(gè)氨基酸的成熟蛋白。人和小鼠的p19亞基具有70%的序列同源性。功能性IL-23受體復(fù)合物由兩個(gè)受體亞基組成,IL-12 Rβ 1和IL-23 R亞基。
產(chǎn)品原理
本實(shí)驗(yàn)采用雙抗體夾心ELISA法??谷薎L-23單抗包被于酶標(biāo)板上,標(biāo)本和標(biāo)準(zhǔn)品中的IL-23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-23抗體,生物素化抗人IL-23抗體與酶標(biāo)板上結(jié)合的標(biāo)準(zhǔn)品或樣本中的IL-23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(guò)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-23,辣根過(guò)氧化物酶會(huì)使無(wú)色的顯色劑變藍(lán),加終止液變黃。在450nm處測(cè)OD值, IL-23濃度與OD450值之間呈正相關(guān),可通過(guò)繪制標(biāo)準(zhǔn)曲線求出標(biāo)本中IL-23濃度。
產(chǎn)品性能
1. 靈敏度:最小可測(cè)人IL-23達(dá)30pg/ml 。
2. 重復(fù)性:板內(nèi)、板間變異系數(shù)均<10%。
產(chǎn)品組分及儲(chǔ)存條件
名稱
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96 Tests
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48 Tests
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保存條件
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1. 抗體包被板條 (Microwell Plate)
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8×12
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8×6
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2-8℃
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2.標(biāo)準(zhǔn)品 (Standard)
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2 支(凍干)
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1 支(凍干)
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2-8℃
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3.濃縮生物素化抗體 100× (Biotin-Conjugate)
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2 支 (60μl/支)
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1 支(60μl/支)
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2-8℃
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4.濃縮酶結(jié)合物 100× (Streptavidin-HRP)
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2 支 (60μl/支)
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1 支(60μl/支)
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2-8℃(避光)
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5.試劑稀釋液 (Assay Diluent)
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2 瓶(25ml/瓶)
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1 瓶(25ml/瓶)
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2-8℃
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6.濃縮洗滌液 20× (Wash Buffer Concentrate)
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1 瓶 (30ml/瓶)
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1 瓶(30ml/瓶)
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2-8℃
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7.顯色劑 (Substrate Solution)
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1 瓶(12ml/瓶 )
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1 瓶(6ml/瓶)
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2-8℃(避光)
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8.終止液 (Stop Solution)
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1 瓶(12ml/瓶)
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1 瓶(12ml/瓶)
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2-8℃
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9.封板膠紙
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3 張
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2 張
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10.說(shuō)明書
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1 份
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1 份
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試驗(yàn)所需自備儀器和試劑:
1. 酶標(biāo)儀(450nm檢測(cè)波長(zhǎng)濾光片,570nm或630nm校正波長(zhǎng)濾光片)。
2. 高精度加液器及一次性吸頭:0.5-10μl,2-20μl,20-200μl,200-1000μl。
3. 37℃恒溫箱、蒸餾水或去離子水、坐標(biāo)紙。
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