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信號通路|Signaling Pathways

信號通路是指當細胞里要發(fā)生某種反應時，信號從細胞外到細胞內傳遞了一種信息，細胞要根據這種信息來做出反應的現象。信號通路是指能將細胞外的分子信號經細胞膜傳入細胞內發(fā)揮效應的一系列酶促反應通路。這些細胞外的分子信號（稱為配體，ligand）包括激素、生長因子、細胞因子、神經遞質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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