Uncovering the cancer specific essentiality of SS18L2, a chromatin regulator of cell cycle

A tiny protein called SS18L2, just 77 amino acids long, appears to be essential for cancer cells to divide, and knocking it out stops them in their tracks. This matters because current cancer treatments often damage healthy cells along with cancerous ones. SS18L2 is a chromatin regulator—a protein that controls how DNA is packaged and read—and its role in cell division was only recently discovered through genome-wide CRISPR screens. The researcher aims to uncover exactly how SS18L2 controls the cell cycle, using advanced techniques to track its activity in space and time. Understanding this mechanism could reveal a new vulnerability specific to cancer cells. If successful, this fundamental science project would bridge two previously separate fields—chromatin regulation and cell cycle biology—showing they are deeply interconnected. There is no immediate practical application. But similar fundamental discoveries about how cells control division have historically led to targeted cancer therapies. A deeper understanding of SS18L2’s role could eventually point toward a drug that selectively blocks cancer cell proliferation without harming normal tissue.