CLCA2: A Potential Guardian against Premature Senescence and Skin Aging

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Abstract

Cellular senescence, a state of irreversible growth arrest, is implicated in various age-related pathologies, including skin aging. In this study, we investigated the role of CLCA2, a calcium-activated chloride channel accessory protein, in cellular senescence and its implications for skin aging. Utilizing UVB and Nutlin3a-induced senescence models, we observed the upregulation of CLCA2 at both transcriptomic and proteomic levels, suggesting its involvement in senescence pathways. Further analysis revealed that the depletion of CLCA2 led to accelerated senescence onset, characterized by classic senescence markers and a unique secretome profile. In 3D skin equivalent models, SEs constructed with CLCA2 knockdown fibroblasts exhibited features reminiscent of aged skin, underscoring the importance of CLCA2 in maintaining skin homeostasis. Our findings highlight CLCA2 as a novel regulator of cellular senescence and its potential implications for skin aging mechanisms.

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Guerrero-Navarro, L., Martic, I., Ploner, C., Jansen-Dürr, P., & Cavinato, M. (2024). CLCA2: A Potential Guardian against Premature Senescence and Skin Aging. Biomedicines, 12(3). https://doi.org/10.3390/biomedicines12030592

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