PMID- 29484847 OWN - NLM STAT- MEDLINE DCOM- 20190221 LR - 20240315 IS - 2051-817X (Electronic) IS - 2051-817X (Linking) VI - 6 IP - 5 DP - 2018 Mar TI - Lung epithelial-specific TRIP-1 overexpression maintains epithelial integrity during hyperoxia exposure. LID - 10.14814/phy2.13585 [doi] LID - e13585 AB - The onset and degree of injury occurring in animals that develop hyperoxic acute lung injury (HALI) is dependent on age at exposure, suggesting that developmentally regulated pathways/factors must underlie initiation of the epithelial injury and subsequent repair. Type II TGFbeta receptor interacting protein-1 (TRIP-1) is a negative regulator of TGFbeta signaling, which we have previously shown is a developmentally regulated protein with modulatory effects on epithelial-fibroblastic signaling. The aim of this study was to assess if type II alveolar epithelial cells overexpressing TRIP-1 are protected against hyperoxia-induced epithelial injury, and in turn HALI. Rat lung epithelial cells (RLE) overexpressing TRIP-1 or LacZ were exposed to 85% oxygen for 4 days. A surfactant protein C (SPC)-driven TRIP-1 overexpression mouse (TRIP-1(AECTg+) ) was generated and exposed to hyperoxia (>95% for 4 days) at 4 weeks of age to assess the effects TRIP-1 overexpression has on HALI. RLE overexpressing TRIP-1 resisted hyperoxia-induced apoptosis. Mice overexpressing TRIP-1 in their lung type II alveolar epithelial cells (TRIP-1(AECTg+) ) showed normal lung development, increased phospho-AKT level and E-cadherin, along with resistance to HALI, as evidence by less TGFbeta activation, apoptosis, alveolar macrophage influx, KC expression. Taken together, these findings point to existence of a TRIP-1 mediated molecular pathway affording protection against epithelial/acute lung injury. CI - (c) 2018 The Authors. Physiological Reports published by Wiley Periodicals, Inc. on behalf of The Physiological Society and the American Physiological Society. FAU - Nyp, Michael F AU - Nyp MF AUID- ORCID: 0000-0001-5127-670X AD - Division of Neonatology, Department of Pediatrics, Children's Mercy Kansas City, Kansas City, Missouri. AD - Department of Pediatrics, University of Missouri Kansas City, Kansas City, Missouri. FAU - Mabry, Sherry M AU - Mabry SM AD - Division of Neonatology, Department of Pediatrics, Children's Mercy Kansas City, Kansas City, Missouri. AD - Department of Pediatrics, University of Missouri Kansas City, Kansas City, Missouri. FAU - Navarro, Angels AU - Navarro A AD - Division of Neonatology, Department of Pediatrics, Children's Mercy Kansas City, Kansas City, Missouri. AD - Department of Pediatrics, University of Missouri Kansas City, Kansas City, Missouri. FAU - Menden, Heather AU - Menden H AD - Division of Neonatology, Department of Pediatrics, Children's Mercy Kansas City, Kansas City, Missouri. AD - Department of Pediatrics, University of Missouri Kansas City, Kansas City, Missouri. FAU - Perez, Ricardo E AU - Perez RE AD - Department of Anatomy and Cell Biology, Rush University, Chicago, Illinois. FAU - Sampath, Venkatesh AU - Sampath V AD - Division of Neonatology, Department of Pediatrics, Children's Mercy Kansas City, Kansas City, Missouri. AD - Department of Pediatrics, University of Missouri Kansas City, Kansas City, Missouri. FAU - Ekekezie, Ikechukwu I AU - Ekekezie II AD - Division of Neonatology, Department of Pediatrics, Children's Mercy Kansas City, Kansas City, Missouri. AD - Department of Pediatrics, University of Missouri Kansas City, Kansas City, Missouri. LA - eng GR - R01 HL128374/HL/NHLBI NIH HHS/United States PT - Journal Article PT - Research Support, N.I.H., Extramural PT - Research Support, Non-U.S. Gov't PL - United States TA - Physiol Rep JT - Physiological reports JID - 101607800 RN - 0 (Eukaryotic Initiation Factors) RN - 0 (Intracellular Signaling Peptides and Proteins) RN - 0 (TRIP-1 protein, mouse) SB - IM MH - Acute Lung Injury/etiology/*metabolism MH - Alveolar Epithelial Cells/metabolism MH - Animals MH - Apoptosis MH - Cell Line MH - Eukaryotic Initiation Factors/genetics/*metabolism MH - Humans MH - Hypoxia/*complications MH - Intracellular Signaling Peptides and Proteins/genetics/*metabolism MH - Lung/cytology/metabolism MH - Mice MH - Mice, Inbred C57BL MH - Rats PMC - PMC5827472 OTO - NOTNLM OT - Airway and lung biology OT - TGFbeta OT - TRIP-1 OT - hyperoxic acute lung injury EDAT- 2018/02/28 06:00 MHDA- 2019/02/23 06:00 PMCR- 2018/02/27 CRDT- 2018/02/28 06:00 PHST- 2017/08/18 00:00 [received] PHST- 2017/12/20 00:00 [revised] PHST- 2017/12/27 00:00 [accepted] PHST- 2018/02/28 06:00 [entrez] PHST- 2018/02/28 06:00 [pubmed] PHST- 2019/02/23 06:00 [medline] PHST- 2018/02/27 00:00 [pmc-release] AID - PHY213585 [pii] AID - 10.14814/phy2.13585 [doi] PST - ppublish SO - Physiol Rep. 2018 Mar;6(5):e13585. doi: 10.14814/phy2.13585.