PMID- 26669856 OWN - NLM STAT- MEDLINE DCOM- 20160627 LR - 20190828 IS - 1932-6203 (Electronic) IS - 1932-6203 (Linking) VI - 10 IP - 12 DP - 2015 TI - Nontypeable Haemophilus influenzae-Induced MyD88 Short Expression Is Regulated by Positive IKKbeta and CREB Pathways and Negative ERK1/2 Pathway. PG - e0144840 LID - 10.1371/journal.pone.0144840 [doi] LID - e0144840 AB - Airway diseases such as asthma and chronic obstructive pulmonary disease (COPD) are characterized by excessive inflammation and are exacerbated by nontypeable Haemophilus influenzae (NTHi). Airway epithelial cells mount the initial innate immune responses to invading pathogens and thus modulate inflammation. While inflammation is necessary to eliminate a pathogen, excessive inflammation can cause damage to the host tissue. Therefore, the inflammatory response must be tightly regulated and deciphering the signaling pathways involved in this response will enhance our understanding of the regulation of the host inflammatory response. NTHi binds to TLR2 and signal propagation requires the adaptor molecule myeloid differentiation factor 88 (MyD88). An alternative spliced form of MyD88 is called MyD88 short (MyD88s) and has been identified in macrophages and embryonic cell lines as a negative regulator of inflammation. However, the role of MyD88s in NTHi-induced inflammation in airway epithelial cells remains unknown. Here we show that NTHi induces MyD88s expression and MyD88s is a negative regulator of inflammation in airway epithelial cells. We further demonstrate that MyD88s is positively regulated by IKKbeta and CREB and negatively regulated by ERK1/2 signaling pathways. Taken together these data indicate that airway inflammation is controlled in a negative feedback manner involving MyD88s and suggest that airway epithelial cells are essential to maintain immune homeostasis. FAU - Andrews, Carla S AU - Andrews CS AD - Center for Inflammation, Immunity & Infection, Institute for Biomedical Sciences, Georgia State University, Atlanta, Georgia, United States of America. FAU - Miyata, Masanori AU - Miyata M AD - Center for Inflammation, Immunity & Infection, Institute for Biomedical Sciences, Georgia State University, Atlanta, Georgia, United States of America. FAU - Susuki-Miyata, Seiko AU - Susuki-Miyata S AD - Center for Inflammation, Immunity & Infection, Institute for Biomedical Sciences, Georgia State University, Atlanta, Georgia, United States of America. FAU - Lee, Byung-Cheol AU - Lee BC AD - Center for Inflammation, Immunity & Infection, Institute for Biomedical Sciences, Georgia State University, Atlanta, Georgia, United States of America. FAU - Komatsu, Kensei AU - Komatsu K AD - Center for Inflammation, Immunity & Infection, Institute for Biomedical Sciences, Georgia State University, Atlanta, Georgia, United States of America. FAU - Li, Jian-Dong AU - Li JD AD - Center for Inflammation, Immunity & Infection, Institute for Biomedical Sciences, Georgia State University, Atlanta, Georgia, United States of America. LA - eng GR - GM107529/GM/NIGMS NIH HHS/United States GR - R01 DC005843/DC/NIDCD NIH HHS/United States GR - R01 GM107529/GM/NIGMS NIH HHS/United States GR - DC004562/DC/NIDCD NIH HHS/United States GR - R01 DC013833/DC/NIDCD NIH HHS/United States GR - DC005843/DC/NIDCD NIH HHS/United States GR - R01 DC004562/DC/NIDCD NIH HHS/United States GR - DC013833/DC/NIDCD NIH HHS/United States PT - Journal Article PT - Research Support, N.I.H., Extramural DEP - 20151215 PL - United States TA - PLoS One JT - PloS one JID - 101285081 RN - 0 (Cyclic AMP Response Element-Binding Protein) RN - 0 (Myeloid Differentiation Factor 88) RN - EC 2.7.11.10 (I-kappa B Kinase) SB - IM MH - Animals MH - Cyclic AMP Response Element-Binding Protein/*metabolism MH - Epithelial Cells/metabolism/microbiology/pathology MH - Haemophilus Infections/complications/microbiology/pathology MH - Haemophilus influenzae/*physiology MH - Humans MH - I-kappa B Kinase/*metabolism MH - Inflammation/complications/pathology MH - Lung/pathology MH - *MAP Kinase Signaling System MH - Mice, Inbred C57BL MH - Models, Biological MH - Myeloid Differentiation Factor 88/*metabolism PMC - PMC4684398 COIS- Competing Interests: The authors have declared that no competing interests exist. EDAT- 2015/12/17 06:00 MHDA- 2016/06/28 06:00 PMCR- 2015/12/15 CRDT- 2015/12/17 06:00 PHST- 2015/08/05 00:00 [received] PHST- 2015/11/24 00:00 [accepted] PHST- 2015/12/17 06:00 [entrez] PHST- 2015/12/17 06:00 [pubmed] PHST- 2016/06/28 06:00 [medline] PHST- 2015/12/15 00:00 [pmc-release] AID - PONE-D-15-34428 [pii] AID - 10.1371/journal.pone.0144840 [doi] PST - epublish SO - PLoS One. 2015 Dec 15;10(12):e0144840. doi: 10.1371/journal.pone.0144840. eCollection 2015.