PMID- 10423398 OWN - NLM STAT- MEDLINE DCOM- 19990907 LR - 20071114 IS - 1044-1549 (Print) IS - 1044-1549 (Linking) VI - 21 IP - 2 DP - 1999 Aug TI - Forkhead transcription factor HFH-4 expression is temporally related to ciliogenesis. PG - 168-76 AB - Members of the forkhead/winged-helix family of transcription factors are expressed in tissue-specific patterns and play critical roles in development and cell differentiation. The expression of forkhead family member hepatocyte nuclear factor-3/forkhead homologue 4 (HFH-4) has been localized by RNA-blot analysis and in situ hybridization to the proximal airway of the lung (trachea, bronchi, and bronchioles) with onset at mouse embryonic day (E) 14.5 and is present in the choroid plexus, ependymal cells, oviduct, and testis. We hypothesized that the restricted expression of HFH-4 messenger RNA suggests a function common to these tissues and therefore a cell-specific role for HFH-4. Accordingly, an anti-HFH-4 antibody was generated and used for cell-specific localization of protein expression to begin to identify the functions of HFH-4. We found HFH-4 expression in proximal airway ciliated epithelial cells, but not Clara cells or alveolar epithelial cells. HFH-4 was also expressed in ciliated epithelial cells of the nose and paranasal sinuses, choroid plexus, ependyma, and oviduct. In developing mouse lung, HFH-4 expression was initially detected in airway epithelial cells at E15.5, before the appearance of cilia, and at later stages was localized to epithelial cells with cilia. In the testis, HFH-4 expression in spermatids was coincident with stage-specific generation of flagella. The temporal relationship of HFH-4 expression to the development of cilia and flagella, and the restricted expression in ciliated epithelial cells, suggest that this transcription factor has a role in regulation and maintenance of the ciliated cell phenotype in epithelial cells. FAU - Blatt, E N AU - Blatt EN AD - Department of Internal Medicine, Washington University School of Medicine, St. Louis, Missouri, USA. FAU - Yan, X H AU - Yan XH FAU - Wuerffel, M K AU - Wuerffel MK FAU - Hamilos, D L AU - Hamilos DL FAU - Brody, S L AU - Brody SL LA - eng GR - R29-HL56244/HL/NHLBI NIH HHS/United States PT - Journal Article PT - Research Support, Non-U.S. Gov't PT - Research Support, U.S. Gov't, P.H.S. PL - United States TA - Am J Respir Cell Mol Biol JT - American journal of respiratory cell and molecular biology JID - 8917225 RN - 0 (Basic Helix-Loop-Helix Leucine Zipper Transcription Factors) RN - 0 (DNA, Complementary) RN - 0 (DNA-Binding Proteins) RN - 0 (Hepatocyte Nuclear Factor 4) RN - 0 (MLX protein, human) RN - 0 (Phosphoproteins) RN - 0 (Tcfl4 protein, mouse) RN - 0 (Transcription Factors) SB - IM MH - Animals MH - Basic Helix-Loop-Helix Leucine Zipper Transcription Factors MH - Brain/anatomy & histology MH - Cell Division MH - Cilia/*metabolism/physiology MH - DNA, Complementary/analysis MH - *DNA-Binding Proteins MH - Epithelial Cells/cytology MH - Gene Expression MH - Hepatocyte Nuclear Factor 4 MH - Humans MH - Immunohistochemistry MH - Lung/anatomy & histology/embryology MH - Male MH - Mice MH - Nose/anatomy & histology MH - Oviducts/anatomy & histology MH - Paranasal Sinuses/anatomy & histology MH - Phosphoproteins/immunology/*metabolism MH - Rats MH - Spermatids/metabolism MH - Testis/anatomy & histology MH - Time Factors MH - Transcription Factors/immunology/*metabolism EDAT- 1999/07/29 00:00 MHDA- 1999/07/29 00:01 CRDT- 1999/07/29 00:00 PHST- 1999/07/29 00:00 [pubmed] PHST- 1999/07/29 00:01 [medline] PHST- 1999/07/29 00:00 [entrez] AID - 10.1165/ajrcmb.21.2.3691 [doi] PST - ppublish SO - Am J Respir Cell Mol Biol. 1999 Aug;21(2):168-76. doi: 10.1165/ajrcmb.21.2.3691.