Proto-oncogenes are normal cellular genes that help regulate growth, differentiation, and survival. Consider this: they are often described as proto-oncogenes because they exist in a pre-cancerous state and can later become dangerous oncogenes when something goes wrong. To cause cancer, proto-oncogenes require specific biological changes that push them into an uncontrolled, overactive state. These changes may include mutations, gene amplification, or chromosomal rearrangements, and each one can lead to permanent signaling that tells a cell to divide without limit Easy to understand, harder to ignore..
The Normal Role of Proto-Oncogenes
Before cancer begins, proto-oncogenes play important roles in everyday cell function. Even so, they help make proteins that promote the cell cycle, support tissue repair, and encourage survival. Because of that, for example, the RAS family of proto-oncogenes is involved in signal transduction pathways that tell cells to grow. The MYC family helps regulate gene expression during cell proliferation Worth knowing..
