{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,11,2]],"date-time":"2025-11-02T16:34:40Z","timestamp":1762101280645},"reference-count":54,"publisher":"American Society for Cell Biology (ASCB)","issue":"10","content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["MBoC"],"published-print":{"date-parts":[[2012,5,15]]},"abstract":"<jats:p>Antiproliferative factor (APF) is a sialoglycopeptide elevated in the urine of patients with interstitial cystitis (IC)\u2014a chronic, painful bladder disease of unknown etiology. APF inhibits the proliferation of normal bladder epithelial and T24 bladder carcinoma cells in vitro by binding to cytoskeleton-associated protein 4 (CKAP4) and altering the transcription of genes involved in proliferation, cellular adhesion, and tumorigenesis; however, specific molecular mechanisms and effector genes that control APF's antiproliferative effects are unknown. In this study, we found that there was a 7.5-fold up-regulation of connective tissue growth factor (CTGF\/CCN2) expression in T24 bladder carcinoma cells treated with APF. Western blot revealed a dose-dependent increase in CCN2 protein levels, with secretion into the culture medium after APF treatment. CCN2 overexpression enhanced APF's antiproliferative activity, whereas CCN2 knockdown diminished APF-induced p53 expression. Using a luciferase reporter construct, we found that APF treatment resulted in fivefold activation of the CCN2 proximal promoter and, of importance, that small interfering RNA\u2013mediated knockdown of CKAP4 inhibited CCN2 upregulation. In addition, we demonstrate that CKAP4 translocates to the nucleus and binds to the CCN2 proximal promoter in an APF-dependent manner, providing evidence that CCN2 regulation by APF involves CKAP4 nuclear translocation and binding to the CCN2 promoter.<\/jats:p>","DOI":"10.1091\/mbc.e11-08-0714","type":"journal-article","created":{"date-parts":[[2012,3,23]],"date-time":"2012-03-23T02:34:33Z","timestamp":1332470073000},"page":"1976-1985","source":"Crossref","is-referenced-by-count":15,"title":["Antiproliferative factor regulates connective tissue growth factor (CTGF\/CCN2) expression in T24 bladder carcinoma cells"],"prefix":"10.1091","volume":"23","author":[{"given":"Christina A.","family":"Matika","sequence":"first","affiliation":[{"name":"Department of Basic Sciences, The Commonwealth Medical College, Scranton, PA 18509"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Melissa","family":"Wasilewski","sequence":"additional","affiliation":[{"name":"Department of Basic 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