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Effects of ERK1/2 Signaling on Cell Cycle Regulation by the Tuberin-Cyclin B1 Complex

How cells balance growth (cell size) and division (cell number) requires a complex interplay between response to external signals, including growth factors, nutrient availability and metabolic cues, along with regulation of the cell cycle. The protein Tuberin (gene TSC2) is a critical regulator of these decisions. In a complex with the protein Hamartin, Tuberin functions as a negative regulator of the Target of Rapamycin (mTOR) pathway, preventing excessive growth under unfavorable conditions.

bioRxiv 3d ago

Genetic control of mitotic-to-meiotic transition regulates germline cell survival

The coordination between DNA damage repair and cell cycle progression is essential to ensure cell survival and organ homeostasis. This is particularly critical during gametogenesis, where germline cells first proliferate and then transition from mitosis to meiosis. Meiotic cells frequently undergo recombination, which itself implies the generation of severe DNA damage in the form of double-strand DNA breaks (DSBs) that ought to be repaired to preserve genome integrity.

bioRxiv 9d ago

Molecular glue degraders of HuR suppress BRAF-mutant colorectal cancer

Abstract BRAF gain-of-function mutations, particularly BRAF(V600E), affect roughly 10% of all patients with colorectal cancer (CRC), and portend poor prognosis with limited therapeutic interventions. BRAF inhibitors such as encorafenib are ineffective due to MAPK pathway reactivation driven by BRAF dimerization. Combined inhibition of BRAF and EGFR, although approved therapies, results in short survival benefits and frequent treatment resistance and relapse1,2,3.

Nature 21h ago