PMID- 19609315 OWN - NLM STAT- MEDLINE DCOM- 20100128 LR - 20211020 IS - 1523-1747 (Electronic) IS - 0022-202X (Print) IS - 0022-202X (Linking) VI - 130 IP - 1 DP - 2010 Jan TI - Metalloproteinase-mediated, context-dependent function of amphiregulin and HB-EGF in human keratinocytes and skin. PG - 295-304 LID - 10.1038/jid.2009.211 [doi] AB - Human keratinocytes (KCs) express multiple EGF receptor (EGFR) ligands; however, their functions in specific cellular contexts remain largely undefined. To address this issue, first we measured mRNA and protein levels for multiple EGFR ligands in KCs and skin. Amphiregulin (AREG) was by far the most abundant EGFR ligand in cultured KCs, with >19 times more mRNA and >7.5 times more shed protein than any other family member. EGFR ligand expression in normal skin was low (<8 per thousand of RPLP0/36B4); however, HB-EGF and AREG mRNAs were strongly induced in human skin organ culture. KC migration in scratch wound assays was highly metalloproteinase (MP)- and EGFR dependent, and was markedly inhibited by EGFR ligand antibodies. However, lentivirus-mediated expression of soluble HB-EGF, but not soluble AREG, strongly enhanced KC migration, even in the presence of MP inhibitors. Lysophosphatidic acid (LPA)-induced ERK phosphorylation was also strongly EGFR and MP dependent and markedly inhibited by neutralization of HB-EGF. In contrast, autocrine KC proliferation and ERK phosphorylation were selectively blocked by neutralization of AREG. These data show that distinct EGFR ligands stimulate KC behavior in different cellular contexts, and in an MP-dependent fashion. FAU - Stoll, Stefan W AU - Stoll SW AD - Department of Dermatology, University of Michigan Medical School, Ann Arbor, MI, USA. sstoll@umich.edu FAU - Johnson, Jessica L AU - Johnson JL FAU - Bhasin, Ajay AU - Bhasin A FAU - Johnston, Andrew AU - Johnston A FAU - Gudjonsson, Johann E AU - Gudjonsson JE FAU - Rittie, Laure AU - Rittie L FAU - Elder, James T AU - Elder JT LA - eng GR - K01 AR050462-03/AR/NIAMS NIH HHS/United States GR - R03 AR049420/AR/NIAMS NIH HHS/United States GR - R03 AR049420-03/AR/NIAMS NIH HHS/United States GR - K01 AR050462/AR/NIAMS NIH HHS/United States GR - R01 AR 052889/AR/NIAMS NIH HHS/United States GR - R01 AR052889/AR/NIAMS NIH HHS/United States PT - Journal Article PT - Research Support, N.I.H., Extramural PT - Research Support, Non-U.S. Gov't PT - Research Support, U.S. Gov't, Non-P.H.S. PL - United States TA - J Invest Dermatol JT - The Journal of investigative dermatology JID - 0426720 RN - 0 (AREG protein, human) RN - 0 (Amphiregulin) RN - 0 (EGF Family of Proteins) RN - 0 (Glycoproteins) RN - 0 (HBEGF protein, human) RN - 0 (Heparin-binding EGF-like Growth Factor) RN - 0 (Intercellular Signaling Peptides and Proteins) RN - 0 (Ligands) RN - 0 (Lipopolysaccharides) RN - 0 (RNA, Messenger) RN - EC 2.7.10.1 (ErbB Receptors) RN - EC 2.7.11.24 (Extracellular Signal-Regulated MAP Kinases) RN - EC 3.4.- (Metalloproteases) SB - IM MH - Amphiregulin MH - Autocrine Communication/physiology MH - Cell Division/physiology MH - Cell Movement/*physiology MH - Cells, Cultured MH - EGF Family of Proteins MH - ErbB Receptors/metabolism MH - Extracellular Signal-Regulated MAP Kinases/metabolism MH - Glycoproteins/genetics/*metabolism MH - Heparin-binding EGF-like Growth Factor MH - Humans MH - Intercellular Signaling Peptides and Proteins/genetics/*metabolism MH - Keratinocytes/cytology/*metabolism MH - Lentivirus/genetics MH - Ligands MH - Lipopolysaccharides/pharmacology MH - Metalloproteases/antagonists & inhibitors/*metabolism MH - Organ Culture Techniques MH - Phosphorylation/drug effects/physiology MH - RNA, Messenger/metabolism MH - Signal Transduction/physiology MH - Skin/cytology PMC - PMC2795126 MID - NIHMS134079 EDAT- 2009/07/18 09:00 MHDA- 2010/01/29 06:00 PMCR- 2011/01/01 CRDT- 2009/07/18 09:00 PHST- 2009/07/18 09:00 [entrez] PHST- 2009/07/18 09:00 [pubmed] PHST- 2010/01/29 06:00 [medline] PHST- 2011/01/01 00:00 [pmc-release] AID - S0022-202X(15)34551-6 [pii] AID - 10.1038/jid.2009.211 [doi] PST - ppublish SO - J Invest Dermatol. 2010 Jan;130(1):295-304. doi: 10.1038/jid.2009.211.