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信号通路|Signaling Pathways
信号通路是指当细胞里要发生某种反应时,信号从细胞外到细胞内传递了一种信息,细胞要根据这种信息来做出反应的现象。信号通路是指能将细胞外的分子信号经细胞膜传入细胞内发挥效应的一系列酶促反应通路。这些细胞外的分子信号(称为配体,ligand)包括激素、生长因子、细胞因子、神经递质以及其它小分子化合物等。signaling pathway,Describes a series of chemical reactions in which a group of molecules in a cell work together to control a cell function, such as cell division or cell death. A cell receives signals from its environment when a molecule, such as a hormone or growth factor, binds to a specific protein receptor on or in the cell. After the first molecule in the pathway receives a signal, it activates another molecule. This process is repeated through the entire signaling pathway until the last molecule is activated and the cell function is carried out. Abnormal activation of signaling pathways may lead to diseases, such as cancer. Drugs are being developed to target specific molecules involved in these pathways. These drugs may help keep cancer cells from growing.
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