News for Healthier Living

Blocking an Enzyme Speeds the Breakdown of a Leukemia Growth Protein

A research team has identified an enzyme that helps acute myeloid leukemia (AML) cells survive by protecting c-MYC, a protein that drives cell growth, from degradation. The enzyme, known as protein tyrosine phosphatase non-receptor type 2 (PTPN2), removes a phosphate group that helps mark c-MYC for breakdown. Reducing PTPN2 levels slowed leukemia cell growth and increased programmed cell death in laboratory experiments, while an experimental compound that inhibits the enzyme slowed the growth of human leukemia cell implants in mice. The findings point to a potential way to weaken c-MYC-driven growth and provide a starting point for developing more selective inhibitors.

November 13, 2026


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