<p>We reconceptualize p21 as the master regulator of a “resilience network” that empowers cancer cells to defy therapy. Beyond cell cycle arrest, p21 orchestrates a multi-faceted defense, suppressing ferroptosis and cuproptosis by governing redox and metal ion homeostasis. This perspective demands a therapeutic paradigm shift: targeting the p21 network is essential to dismantle this evolved survival machinery and force durable tumor regression in resistant cancers.</p>

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The p21 resilience network: a conceptual framework linking senescence to ferroptosis and cuproptosis resistance

  • Shantanu Gupta

摘要

We reconceptualize p21 as the master regulator of a “resilience network” that empowers cancer cells to defy therapy. Beyond cell cycle arrest, p21 orchestrates a multi-faceted defense, suppressing ferroptosis and cuproptosis by governing redox and metal ion homeostasis. This perspective demands a therapeutic paradigm shift: targeting the p21 network is essential to dismantle this evolved survival machinery and force durable tumor regression in resistant cancers.