產(chǎn)品概述
肝細胞生長因子(Hepatocyte growth factor,HGF)是一種多效應(yīng)生長因子,又稱擴散因子(scatter factor,SF)、肝細胞生成素A(hepatopoietin A)(肝細胞生成素B可能是A的片段)和乳腺生長因子,最初從大鼠的血小板中純化獲得。成熟的肝細胞生長因子是一個分子量82kDa,含674個氨基酸殘基的異二聚體糖蛋白,它是一類因子小家族的一員,該家族還包括肝細胞生長因子樣蛋白(也叫巨噬細胞刺激蛋白,MSP),這類因子與其他已知的生長因子幾乎沒有明顯的同源性。肝細胞生長因子對肝細胞和其他上皮細胞,以及內(nèi)皮細胞、間充質(zhì)細胞和造血細胞類具有多種不同的作用,包括促進有絲分裂,形態(tài)形成和促使細胞運動等。
產(chǎn)品原理
本實驗采用雙抗體夾心ELISA法??谷薍GF單抗包被于酶標板上,標本和標準品中的HGF會與單抗結(jié)合形成免疫復合物,游離的成分被洗去;加入生物素化的抗人HGF抗體,生物素化抗人HGF抗體與酶標板上結(jié)合的標準品或樣本中的HGF結(jié)合而形成免疫復合物,游離的成分被洗去;加入辣根過氧化物酶標記的親合素,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HGF,辣根過氧化物酶會使無色的顯色劑變藍,加終止液變黃。在450nm處測OD值,HGF濃度與OD450值之間呈正相關(guān),可通過繪制標準曲線求出標本中HGF濃度。
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