PERTURBATION OF THE AMINO ACID STRESS RESPONSE PATHWAY EXPOSES A METABOLIC VULNERABILITY IN MULTIPLE AGGRESSIVE CANCER SUBTYPES

Pharmacologically perturbing amino acid stress signaling shows broad anti-tumor activity across multiple aggressive malignancies, with sensitivity linked to a chronic stress-adapted metabolic state.

• Why it matters: Cancer cells under nutrient limitation rely on amino acid stress-response pathways to preserve metabolic balance, but the therapeutic vulnerability created by chronic adaptation is not well defined.
• What they did: The study tested pathway modulation across acute lymphoblastic leukemia, acute myeloid leukemia, triple-negative breast cancer, ovarian cancer, and neuroblastoma, linking sensitivity to constitutive amino acid response signaling and elevated NFE2L2 with reduced mitochondrial abundance.
• The result: Tumors with chronic metabolic stress remain exquisitely sensitive to disruption of the adaptive network, even when perturbation uses canonical inhibition or paradoxical activation, supporting off-balancing amino acid stress signaling as a strategy.

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