{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,9,29]],"date-time":"2026-09-29T01:04:08Z","timestamp":1790643848839,"version":"4.1.0"},"reference-count":55,"publisher":"American Society for Cell Biology (ASCB)","issue":"4","content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["MBoC"],"published-print":{"date-parts":[[2016,2,15]]},"abstract":"<jats:p> Epithelial cells line the intestinal mucosa and form an important barrier to a wide array of noxious substances in the lumen. Disruption of the barrier integrity occurs commonly in various pathologies. Long noncoding RNAs (lncRNAs) control diverse biological processes, but little is known about the role of lncRNAs in regulation of the gut permeability. Here we show that the lncRNA SPRY4-IT1 regulates the intestinal epithelial barrier function by altering expression of tight junction (TJ) proteins. SPRY4-IT1 silencing led to dysfunction of the epithelial barrier in cultured cells by decreasing the stability of mRNAs encoding TJ proteins claudin-1, claudin-3, occludin, and JAM-1 and repressing their translation. In contrast, increasing the levels of SPRY4-IT1 in the intestinal mucosa protected the gut barrier in mice exposed to septic stress by increasing the abundance of TJ proteins. SPRY4-IT1 directly interacted with TJ mRNAs, and this process was enhanced through the association with the RNA-binding protein HuR. Of interest, the intestinal mucosa from patients with increased gut permeability exhibited a decrease in the levels of SPRY4-IT1. These findings highlight a novel role for SPRY4-IT1 in controlling the intestinal epithelial barrier and define a mechanism by which SPRY4-IT1 modulates TJ expression by altering the stability and translation of TJ mRNAs. <\/jats:p>","DOI":"10.1091\/mbc.e15-10-0703","type":"journal-article","created":{"date-parts":[[2015,12,18]],"date-time":"2015-12-18T04:59:10Z","timestamp":1450414750000},"page":"617-626","source":"Crossref","is-referenced-by-count":102,"title":["Long noncoding RNA <i>SPRY4-IT1<\/i> regulates intestinal epithelial barrier function by modulating the expression levels of tight junction proteins"],"prefix":"10.1091","volume":"27","author":[{"given":"Lan","family":"Xiao","sequence":"first","affiliation":[{"name":"Cell Biology Group, Department of Surgery, University of Maryland School of Medicine, Baltimore, MD 21201"},{"name":"Baltimore Veterans Affairs Medical Center, Baltimore, MD 21201"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Jaladanki 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