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News
Scientists at the University of Gothenburg have uncovered a previously unknown protein called MSEP, encoded by RNA that was long thought to be non-protein-coding. Both MSEP and its host RNA molecule help regulate cell division — and MSEP levels are elevated in cancer cells. Disrupting MSEP production slowed the growth of cervical cancer cells in lab studies, hinting at potential therapeutic relevance.
Scientists at the University of Gothenburg have discovered a previously unknown protein called MSEP, encoded by an RNA molecule — ARHGEF17-AS1 — that was long assumed to be non-protein-coding. Both MSEP and the RNA molecule play roles in maintaining the cellular machinery responsible for pulling chromosomes apart during cell division, though they do so through distinct pathways. The findings, published in two studies in Cell Reports, shed light on the growing "hidden proteome" — proteins tucked away in genomic regions researchers had largely overlooked.
The cancer connection is where things get particularly interesting. MSEP levels were found to be higher in cancer cell lines compared to normal cells. When researchers disrupted MSEP production in cultured cervical cancer cells, cell growth and proliferation slowed — raising the possibility that some tumors may be especially reliant on MSEP to keep dividing.
Key Takeaways:
Why it matters: This discovery expands our understanding of the "hidden proteome" and opens a new avenue for cancer research. If MSEP proves to be a dependency for certain tumors, it could eventually inform novel, targeted treatment strategies.
