Regulation of the cell cycle by insulin and IGF1
Author: Pierre De Meyts, MD, PHD, F.A.C.E.
An increase in the number of cells growing in cell culture is the result of two opposing effects: an increase in the number of cells that traverse the cell cycle and divide into two daughter cells (mitosis), or a decrease in the number of cells that die, principally through programmed cell death (apoptosis), or both.
Insulin and IGF-I are both capable of facilitating cell progression through the cell cycle, and of inhibiting apoptotic mechanisms.
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