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應用
来自小鼠的白血病抑制因子已用于:
- 作为共培养加富培养基组分
- 作为培养心肌细胞的杜氏改良Eagle培养基(DMEM)/F12培养基的补充剂
- 作为维持胚胎干细胞生长的维持培养基组分
- 处理卵巢培养物的卵巢
生化/生理作用
白血病抑制因子(LIF)是一种多效性糖蛋白,最初被认为能够抑制小鼠骨髓白血病细胞系M1的增殖,同时诱导其分化成巨噬细胞。后来鉴定出LIF的其他活性,已知LIF具有多种别名,包括DIF、D因子、DIA、DRF、CNDF、HILDA、HSF-III和MLPLI。人LIF通过一个受体发挥作用,该受体包含一条190 kDa LIF-结合α-链(130 kDa,小鼠)和一条130 kDa信号传导β-链(gp130),它是CNTF、OSM、L-6和IL-11的共同受体。因此,它是细胞因子受体超家族的gp130家族的成员。已在多种细胞上鉴定了LIF受体,包括单核细胞、肝脏细胞、胎盘细胞和胚胎干细胞。天然LIF是高度糖基化的,表观分子量为32kDa至62kDa,具体取决于来源,但是无糖基化似乎不影响其生物活性。LIF由单个基因编码,它在人或小鼠中分泌为含有180个氨基酸的单链糖蛋白并具有保守二硫键。人和小鼠LIF具有78%的序列同源性。人LIF可以激活小鼠细胞,但小鼠LIF不能激活人体细胞。
外觀
溶于含有0.02%TWEEN® 20的磷酸盐缓冲盐水
分析報告
利用M1小鼠细胞培养物检测小鼠LIF的增殖活性。
法律資訊
TWEEN is a registered trademark of Croda International PLC
儲存類別代碼
11 - Combustible Solids
水污染物質分類(WGK)
WGK 3
閃點(°F)
Not applicable
閃點(°C)
Not applicable
個人防護裝備
Eyeshields, Gloves, type N95 (US)
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