When the heart calls for help: Clusterin reprograms immunity to enable regeneration.

Lai, Shih-Lei Ben; Hung, Yu-Jen; Marín-Juez, Rubén · Cell Stem Cell · 2025

basic_science · Level V

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Abstract

Adult mammalian hearts exhibit limited regenerative capacity. Fan et al.<sup>1</sup> report that neonatal cardiomyocyte-derived clusterin competes for macrophage Toll-like receptor 4 to suppress inflammation and induces reparative polarization. This cardio-immune dialogue activates BMP2 signaling to stimulate cardiomyocyte proliferation, reframing inflammation as a cooperative driver of heart repair.

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