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Recent advances have elucidated the critical role of primary cilia and ciliary ion channels, including transient receptor potential (TRP) channels, cystic fibrosis transmembrane conductance regulator (CFTR), and polycystin channels, in the pathogenesis of PKD. While some channels primarily function as chloride conductance channels (e.g., CFTR), others primarily regulate calcium (Ca+2) homeostasis. These ion channels are essential for cellular signaling and maintaining the normal kidney architecture. Dysregulation of these pathways due to genetic mutations in PKD1 and PKD2 leads to disrupted Ca+2 and cAMP signaling, aberrant fluid secretion, and uncontrolled cellular proliferation, resulting in tubular cystogenesis. Understanding the molecular mechanisms underlying these dysfunctions has opened the door for innovative therapeutic strategies, including TRPV4 activators, CFTR inhibitors, and calcimimetics, to mitigate cyst growth and preserve renal function. This review summarizes the current knowledge on the roles of ciliary ion channels in PKD pathophysiology, highlights therapeutic interventions targeting these channels, and identifies future research directions for improving patient outcomes.<\/jats:p>","DOI":"10.3390\/cells14060459","type":"journal-article","created":{"date-parts":[[2025,3,20]],"date-time":"2025-03-20T07:59:54Z","timestamp":1742457594000},"page":"459","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":7,"title":["Ciliary Ion Channels in Polycystic Kidney Disease"],"prefix":"10.3390","volume":"14","author":[{"ORCID":"https:\/\/orcid.org\/0000-0001-5278-5311","authenticated-orcid":false,"given":"Lubna A.","family":"Alshriem","sequence":"first","affiliation":[{"name":"Department of Pharmacology and Experimental Therapeutics, University of Toledo, Toledo, OH 43614, USA"},{"name":"Department of Clinical Pharmacy, Faculty of Pharmacy, Jordan University of Science and Technology, P.O. Box 3030, Irbid 22110, Jordan"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Raghad","family":"Buqaileh","sequence":"additional","affiliation":[{"name":"Department of Pharmacology and Experimental Therapeutics, University of Toledo, Toledo, OH 43614, USA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Qasim","family":"Alorjani","sequence":"additional","affiliation":[{"name":"Department of Pharmacology and Experimental Therapeutics, University of Toledo, Toledo, OH 43614, USA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-8226-3108","authenticated-orcid":false,"given":"Wissam","family":"AbouAlaiwi","sequence":"additional","affiliation":[{"name":"Department of Pharmacology and Experimental Therapeutics, University of Toledo, Toledo, OH 43614, USA"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"1968","published-online":{"date-parts":[[2025,3,19]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"50","DOI":"10.1038\/s41572-018-0047-y","article-title":"Polycystic kidney disease","volume":"4","author":"Bergmann","year":"2018","journal-title":"Nat. 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