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The current treatment for ARDS is mainly supportive in nature, providing a critical need for targeted pharmacological management. We addressed this medical problem by developing a pharmacological treatment for pulmonary vascular leakage, a culprit of alveolar damage and lung inflammation. Our novel therapeutic target is the microtubule accessory factor EB3 (end binding protein 3), which contributes to pulmonary vascular leakage by amplifying pathological calcium signaling in endothelial cells in response to inflammatory stimuli. EB3 interacts with IP3R3 (inositol 1,4,5-trisphosphate receptor 3) and orchestrates calcium release from endoplasmic reticulum stores. Here, we designed and tested the therapeutic benefits of a 14-aa peptide named CIPRI (cognate IP3 receptor inhibitor), which disrupted EB3\u2013IP3R3 interaction in vitro and in lungs of mice challenged with endotoxin. Treatment with CIPRI or depletion of IP3R3 in lung microvascular endothelial monolayers mitigated calcium release from endoplasmic reticulum stores and prevented a disassembly of vascular endothelial cadherin junctions in response to the proinflammatory mediator \u03b1-thrombin. Furthermore, intravenous administration of CIPRI in mice mitigated inflammation-induced lung injury, blocked pulmonary microvascular leakage, prevented activation of NFAT (nuclear factor of activated T cells) signaling, and reduced production of proinflammatory cytokines in the lung tissue. CIPRI also improved survival of mice from endotoxemia and polymicrobial sepsis. Together, these data demonstrate that targeting EB3\u2013IP3R3 interaction with a cognate peptide is a promising strategy to address hyperpermeability of microvessels in inflammatory lung diseases.<\/jats:p>","DOI":"10.1165\/rcmb.2022-0217oc","type":"journal-article","created":{"date-parts":[[2023,6,8]],"date-time":"2023-06-08T16:09:27Z","timestamp":1686240567000},"page":"391-403","update-policy":"https:\/\/doi.org\/10.1164\/crossmarkpolicies","source":"Crossref","is-referenced-by-count":6,"title":["Targeting EB3\u2013IP3R3 Interface with Cognate Peptide Protects from Acute Respiratory Distress Syndrome"],"prefix":"10.1093","volume":"69","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-9399-8820","authenticated-orcid":false,"given":"Man Long","family":"Kwok","sequence":"first","affiliation":[{"name":"Department of Pharmacology and Regenerative Medicine, College of Medicine, and"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Melissa","family":"Geyer","sequence":"additional","affiliation":[{"name":"Department of Pharmacology and Regenerative Medicine, College of Medicine, and"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Wan Ching","family":"Chan","sequence":"additional","affiliation":[{"name":"Department of Pharmacology and Regenerative Medicine, College of Medicine, and"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Shuangping","family":"Zhao","sequence":"additional","affiliation":[{"name":"Department of Pharmacology and Regenerative Medicine, College of Medicine, and"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Lianzhi","family":"Gu","sequence":"additional","affiliation":[{"name":"Department of Pharmacology and Regenerative Medicine, College of Medicine, and"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Fei","family":"Huang","sequence":"additional","affiliation":[{"name":"Department of Pharmacology and Regenerative Medicine, College of Medicine, and"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Steven M.","family":"Vogel","sequence":"additional","affiliation":[{"name":"Department of Pharmacology and Regenerative Medicine, College of Medicine, and"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Pavel A.","family":"Petukhov","sequence":"additional","affiliation":[{"name":"Department of Pharmaceutical Sciences, College of Pharmacy, University of Illinois at Chicago, Chicago, Illinois"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Yulia","family":"Komarova","sequence":"additional","affiliation":[{"name":"Department of Pharmacology and Regenerative Medicine, College of Medicine, and"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"286","published-online":{"date-parts":[[2023,10,1]]},"reference":[{"key":"2026012204064470000_bib1","doi-asserted-by":"crossref","first-page":"921","DOI":"10.1161\/01.CIR.47.5.921","article-title":"Shock lung: a distinctive nonentity","volume":"47","author":"Fishman","year":"1973","journal-title":"Circulation"},{"key":"2026012204064470000_bib2","doi-asserted-by":"crossref","first-page":"1061","DOI":"10.1001\/jama.2020.1585","article-title":"Clinical characteristics of 138 hospitalized patients with 2019 novel coronavirus-infected pneumonia in Wuhan, China","volume":"323","author":"Wang","year":"2020","journal-title":"JAMA"},{"key":"2026012204064470000_bib3","doi-asserted-by":"crossref","first-page":"818","DOI":"10.1164\/ajrccm.149.3.7509706","article-title":"The American-European Consensus Conference on ARDS. 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