proliferative cell

Proliferative cell physiology refers to the regulated process of cell division and growth in organisms. In unicellular organisms, this is reproduction, while in multicellular organisms, it's crucial for tissue growth and maintenance.1

Cell proliferation is a highly controlled cycle involving distinct phases: G1, S (DNA synthesis), G2, and M (mitosis). Growth factors, proteins that signal cells to divide, play a key role in regulating this process, particularly at the transition from G1 to S phase.1

While most adult cells divide for renewal, some tissues, like heart muscle and nerve cells, have limited regenerative capacity. Failure in proliferation control can lead to uncontrolled cell division, a hallmark of cancer, where cells divide excessively and can invade other tissues (metastasis).12