PMID- 15967781 OWN - NLM STAT- MEDLINE DCOM- 20051223 LR - 20061115 IS - 0953-8178 (Print) IS - 0953-8178 (Linking) VI - 17 IP - 7 DP - 2005 Jul TI - GATA-1 is required for expression of FcepsilonRI on mast cells: analysis of mast cells derived from GATA-1 knockdown mouse bone marrow. PG - 847-56 AB - The high-affinity receptor for IgE (FcepsilonRI) that is expressed on the surface of mast cells plays an important role in antigen/IgE-mediated allergic reactions. We have previously found that critical elements in the promoter of the FcepsilonRI alpha- and beta-chain genes are recognized by the transcription factor GATA-1 in electrophoretic mobility shift assays coupled with a transient expression system for the alpha- and beta-chain promoters. To confirm that GATA-1 is involved in the expression of FcepsilonRI definitively, we generated bone marrow-derived mast cells from GATA-1 knockdown (KD) heterozygous mice. FACS analysis showed that the frequency of FcepsilonRI-positive cells was significantly decreased in mast cells derived from bone marrow of GATA-1 KD mice. Reverse transcription-PCR analysis showed that the level of transcripts not only for GATA-1 but also for both the alpha- and beta-chains was significantly lower in KD mast cells, whereas that of the FcepsilonRI gamma-chain was not affected. Degranulation caused by cross-linking of FcepsilonRI on mast cells prepared from KD mice was markedly repressed in comparison with that of wild-type mast cells. We concluded that the transcription factor GATA-1 positively regulates FcepsilonRI alpha- and beta-chain expression and therefore is involved in mast cell development. FAU - Nishiyama, Chiharu AU - Nishiyama C AD - Atopy (Allergy) Research Center, Juntendo University School of Medicine, 2-1-1 Hongo, Bunkyo-ku, Tokyo 113-8421, Japan. chinishi@med.juntendo.ac.jp FAU - Ito, Tomonobu AU - Ito T FAU - Nishiyama, Makoto AU - Nishiyama M FAU - Masaki, Shigehiro AU - Masaki S FAU - Maeda, Keiko AU - Maeda K FAU - Nakano, Nobuhiro AU - Nakano N FAU - Ng, William AU - Ng W FAU - Fukuyama, Kanako AU - Fukuyama K FAU - Yamamoto, Masayuki AU - Yamamoto M FAU - Okumura, Ko AU - Okumura K FAU - Ogawa, Hideoki AU - Ogawa H LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20050620 PL - England TA - Int Immunol JT - International immunology JID - 8916182 RN - 0 (Receptors, IgE) SB - IM MH - Animals MH - Bone Marrow Cells/*immunology MH - Cell Degranulation/genetics/*immunology MH - Cell Differentiation/genetics/immunology MH - Female MH - Gene Expression Regulation/genetics/immunology MH - Mast Cells/*immunology MH - Mice MH - Mice, Knockout MH - Receptors, IgE/genetics/*immunology EDAT- 2005/06/22 09:00 MHDA- 2005/12/24 09:00 CRDT- 2005/06/22 09:00 PHST- 2005/06/22 09:00 [pubmed] PHST- 2005/12/24 09:00 [medline] PHST- 2005/06/22 09:00 [entrez] AID - dxh278 [pii] AID - 10.1093/intimm/dxh278 [doi] PST - ppublish SO - Int Immunol. 2005 Jul;17(7):847-56. doi: 10.1093/intimm/dxh278. Epub 2005 Jun 20.