PMID- 22493011 OWN - NLM STAT- MEDLINE DCOM- 20121130 LR - 20211021 IS - 1535-4989 (Electronic) IS - 1044-1549 (Print) IS - 1044-1549 (Linking) VI - 47 IP - 3 DP - 2012 Sep TI - Amphiregulin-dependent mucous cell metaplasia in a model of nonallergic lung injury. PG - 349-57 LID - 10.1165/rcmb.2011-0257OC [doi] AB - Proliferation and differentiation of the pulmonary epithelium after injury is a critical process in the defense against the external environment. Defects in this response can result in airway remodeling, such as mucus cell metaplasia (MCM), commonly seen in patients with chronic lung disease. We have previously shown that amphiregulin (AREG), a ligand to the epidermal growth factor receptor (EGFR), is induced during the repair/differentiation process elicited by naphthalene-induced lung injury. Thus, we hypothesized that AREG signaling plays an important role in epithelial proliferation and differentiation of the repairing airway. Mice deficient in AREG and lung epithelial EGFR were used to define roles for AREG-dependent EGFR signaling in airway repair and remodeling. We show that AREG and epithelial EGFR expression is dispensable to pulmonary epithelial repair after naphthalene-induced lung injury, but regulates secretory cell differentiation to a mucus-producing phenotype. We show that the pulmonary epithelium is the source of AREG, suggesting that naphthalene-induced MCM is mediated through an autocrine signaling mechanism. However, induction of MCM resulting from allergen exposure was independent of AREG. Our data demonstrate that AREG-dependent EGFR signaling in airway epithelial cells contributes to MCM in naphthalene-induced lung injury. We conclude that AREG may represent a determinant of nonallergic chronic lung diseases complicated by MCM. FAU - Manzo, Nicholas D AU - Manzo ND AD - Division of Pulmonary, Allergy and Critical Care, Duke University Medical Center, Durham, North Carolina, USA. FAU - Foster, W Michael AU - Foster WM FAU - Stripp, Barry R AU - Stripp BR LA - eng GR - T32 HL007538/HL/NHLBI NIH HHS/United States GR - 5R01HL090146-04/HL/NHLBI NIH HHS/United States GR - R01 HL090146/HL/NHLBI NIH HHS/United States GR - 5R01ES016347/ES/NIEHS NIH HHS/United States GR - 5T32HL007538-27/HL/NHLBI NIH HHS/United States GR - R01 HL064888/HL/NHLBI NIH HHS/United States GR - 5R01HL064888-10/HL/NHLBI NIH HHS/United States GR - R01 ES016347/ES/NIEHS NIH HHS/United States PT - Journal Article PT - Research Support, N.I.H., Extramural DEP - 20120405 PL - United States TA - Am J Respir Cell Mol Biol JT - American journal of respiratory cell and molecular biology JID - 8917225 RN - 0 (Amphiregulin) RN - 0 (Areg protein, mouse) RN - 0 (EGF Family of Proteins) RN - 0 (Glycoproteins) RN - 0 (Intercellular Signaling Peptides and Proteins) RN - EC 2.7.10.1 (ErbB Receptors) SB - IM MH - Amphiregulin MH - Animals MH - Cell Differentiation MH - EGF Family of Proteins MH - ErbB Receptors/metabolism MH - Female MH - Flow Cytometry MH - Glycoproteins/*physiology MH - Intercellular Signaling Peptides and Proteins/*physiology MH - Lung Injury/*pathology MH - Metaplasia/*pathology MH - Mice MH - Mucous Membrane/*cytology MH - Real-Time Polymerase Chain Reaction MH - Signal Transduction/physiology PMC - PMC3488692 EDAT- 2012/04/12 06:00 MHDA- 2012/12/10 06:00 PMCR- 2013/09/01 CRDT- 2012/04/12 06:00 PHST- 2012/04/12 06:00 [entrez] PHST- 2012/04/12 06:00 [pubmed] PHST- 2012/12/10 06:00 [medline] PHST- 2013/09/01 00:00 [pmc-release] AID - rcmb.2011-0257OC [pii] AID - 2011-0257OC [pii] AID - 10.1165/rcmb.2011-0257OC [doi] PST - ppublish SO - Am J Respir Cell Mol Biol. 2012 Sep;47(3):349-57. doi: 10.1165/rcmb.2011-0257OC. Epub 2012 Apr 5.