Cell cycle progression is the process by which a cell grows, replicates its DNA, and divides into two daughter cells. This highly regulated process is essential for the growth, development, and maintenance of all living organisms. The cell cycle is divided into four main phases: G1 (gap 1), S (DNA synthesis), G2 (gap 2), and M (mitosis). During the cell cycle, various checkpoints and control mechanisms ensure that each phase is completed accurately before the cell can proceed to the next phase. Dysregulation of cell cycle progression can lead to uncontrolled cell growth and division, which is a hallmark of cancer and other diseases. Research in cell cycle progression aims to understand the molecular mechanisms that control the cell cycle, identify key regulatory proteins and signaling pathways, and develop targeted therapies to treat diseases caused by aberrant cell cycle progression. This research is crucial for advancing our understanding of basic cellular processes and developing new strategies for diagnosing and treating various diseases.