Zinc Finger Proteins as Regulators of Organ Fibrosis

Abstract

Organ fibrosis represents a terminal pathological consequence of chronic tissue injury and contributes substantially to global morbidity and mortality, yet effective therapeutic options remain limited. Characterized by the persistent activation of fibroblasts into myofibroblasts, fibrosis results in excessive extracellular matrix (ECM) deposition and progressive disruption of normal organ architecture, ultimately leading to functional failure. Increasing evidence places zinc finger proteins (ZNFs) as key mediators within the regulatory hierarchy of fibrotic diseases. As the largest and most diverse family of transcriptional regulators in the human genome, ZNFs utilize specialized zinc-coordinating motifs to regulate gene expression, protein stability, and intracellular signaling pathways. Beyond their classical roles in DNA binding and transcriptional control, ZNFs are now recognized as key orchestrators of fibrotic programs through regulation of ubiquitin-mediated protein turnover, cytoskeletal dynamics, and core pro-fibrotic signaling pathways, including transforming growth factor-β/Smad, mitogen-activated protein kinase, and phosphoinositide 3-kinase/protein kinase B cascades. Dysregulation of specific ZNFs has emerged as a critical driver of myofibroblast differentiation, ECM synthesis, and pathological tissue remodeling across multiple organ systems, including the liver, lung, kidney, skin, and heart. This review provides a comprehensive synthesis of the molecular roles of ZNFs in organ-specific fibrosis, integrating their structural classification with their mechanistic influence on key signaling networks. Furthermore, we discuss the clinical potential of ZNFs as biomarkers of fibrotic progression and evaluate emerging therapeutic strategies aimed at targeting ZNF-mediated pathways. Finally, we outline key knowledge gaps and future research directions. By consolidating recent advances, this review highlights ZNFs as promising molecular targets for the next generation of anti-fibrotic interventions.