Choline kinase A is required for alkylating agent resistance via lipid droplet formation

CHKA is required for alkylating agent resistance in T-cell acute lymphoblastic leukemia (T-ALL), and this resistance depends on CHKA’s nuclear function.

• Why it matters: DNA damage tolerance supports cellular fitness under chemotherapeutic pressure, but how DNA repair programs are regulated in T-ALL is not fully understood.
• What they did: An unbiased genetic screen identified CHKA, and the study showed CHKA controls RAD51 transcription through lipid droplet formation. Restoring lipid droplet formation or RAD51 expression rescued alkylating resistance even when CHKA was inactivated.
• The result: Lipid droplet formation is linked to transcriptional control of the DNA damage response in T-ALL, implying lipid metabolism can regulate genome integrity maintenance.

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