B 细胞中 NF-κB 激活
中文名称
通路描述
DAG 和钙激活蛋白激酶 Cβ(PKC-β,Kochs 等 1991),磷酸化 CARMA1 和其他蛋白(Sommer 等 2005)。磷酸化的 CARMA1 招募 BCL10 和 MALT1 形成 CBM 复合物(Sommer 等 2005,Tanner 等 2007),进而招募激酶 TAK1 和 IKK 复合物(Sommer 等 2005,Shinohara 等 2005 使用鸡细胞)。TAK1 磷酸化 IKK-β亚基,激活它(Wang 等 2001)。IKK 复合物随后磷酸化与 NF-κB 二聚体结合的 IkB 复合物在细胞质中(Zandi 等 1998,Burke 等 1999,Heilker 等 1999),导致 IkB 降解(Miyamoto 等 1994,Traenckner 等 1994,Alkalay 等 1995,DiDonato 等 1995,Li 等 1995,Lin 等 1995,Scherer 等 1995,Chen 等 1995)。NF-κB 二聚体因此释放并转位至细胞核,激活转录(Baeuerle 和 Baltimore 1988,Blank 等 1991,Ghosh 等 2008,Fagerlund 等 2008)。
英文描述
Endogenous sterols A number of CYPs take part in cholesterol biosynthesis and elimination, thus playing an important role in maintaining cholesterol homeostasis. Under normal physiological conditions, cholesterol intake (diet or synthesized de novo from acetyl CoA) equals cholesterol elimination (degraded to bile salts, secreted in bile and used in steroid hormone synthesis). These processes are under tight regulatory control and any disruption leads to increased cholesterol levels resulting in cardiovacular disease. The CYPs involved in cholesterol homeostasis could serve as potential targets for cholesterol-lowering drugs (Lewis 2004, Guengerich 2006, Pikuleva 2006).
所含基因
25 个基因