ArticlebioRxiv : the preprint server for biology2026
Primary cilia promote cardiac fibrosis and limit heart function after myocardial infarction.
Article in bioRxiv : the preprint server for biology, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
Cardiomyocytes die and do not regenerate after an injury such as a myocardial infarction (MI), a leading cause of mortality worldwide. Following MI, cardiac fibroblasts (CFs) proliferate and differentiate into myofibroblasts, which then produce increased collagen and extracellular matrix (ECM) leading to fibrosis. Fibrosis can weaken cardiac output via excessive stiffening and interference with electric signal transmission, but can also prevent wall rupture under load (reviewed in (1)). Thus, dampening fibrosis has been investigated as a potential therapeutic intervention. Most mammalian cells possess a single primary cilium involved in intercellular communication. We investigated the role of CF primary cilia in sensing injury signals and initiating fibrotic remodeling. We found that deleting CF cilia reduced fibrosis and improved cardiac output after MI, demonstrating that cilia act as a signaling hub that amplifies the fibrotic response in the injured heart.
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