A landmark study reveals that genomic instability in ovarian cancer activates the STING-WNT axis, driving the formation of POSTN+ myofibroblasts that establish an immunosuppressive tumor microenvironment. This mechanism represents a critical pathway through which cancer cells transform their inherent genetic vulnerabilities into therapeutic advantages.
The research demonstrates that STING activation, typically associated with tumor suppression, paradoxically promotes myofibroblast differentiation and immune evasion. The POSTN+ myofibroblasts generated through this axis actively suppress anti-tumor immune responses while simultaneously promoting resistance to PARP inhibitor therapy, a first-line treatment for many ovarian cancer patients.
These findings provide quantifiable evidence of how cellular reprogramming converts genomic instability from a potential vulnerability into a resistance mechanism, with significant implications for treatment strategy development.
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