PMID- 20617552 OWN - NLM STAT- MEDLINE DCOM- 20100812 LR - 20171116 IS - 1090-2104 (Electronic) IS - 0006-291X (Linking) VI - 397 IP - 3 DP - 2010 Jul 2 TI - A novel in vivo inducible dendritic cell ablation model in mice. PG - 559-63 AB - Dendritic cells (DCs) are involved in T cell activation via their uptake and presentation of antigens. In vivo function of DCs was analyzed using transgenic mouse models that express diphtheria toxin receptor (DTR) or the diphtheria toxin-A subunit (DTA) under the control of the CD11c/Itgax promoter. However, CD11c+ cells are heterogeneous populations that contain several DC subsets. Thus, the in vivo function of each subset of DCs remains to be elucidated. Here, we describe a new inducible DC ablation model, in which DTR expression is induced under the CD11c/Itgax promoter after Cre-mediated excision of a stop cassette (CD11c-iDTR). Crossing of CD11c-iDTR mice with CAG-Cre transgenic mice, expressing Cre recombinase under control of the cytomegalovirus immediate early enhancer-chicken beta-actin hybrid promoter, led to the generation of mice, in which DTR was selectively expressed in CD11c+ cells (iDTRDelta mice). We successfully deleted CD11c+ cells in bone marrow-derived DCs in vitro and splenic CD11c+ cells in vivo after DT treatment in iDTRDelta mice. This mouse strain will be a useful tool for generating mice lacking a specific subset of DCs using a transgenic mouse strain, in which the Cre gene is expressed by a DC subset-specific promoter. FAU - Okuyama, Megumi AU - Okuyama M AD - Laboratory of Immune Regulation, Department of Microbiology and Immunology, Graduate School of Medicine, Osaka University, Suita, Osaka 565-0871, Japan. FAU - Kayama, Hisako AU - Kayama H FAU - Atarashi, Koji AU - Atarashi K FAU - Saiga, Hiroyuki AU - Saiga H FAU - Kimura, Taishi AU - Kimura T FAU - Waisman, Ari AU - Waisman A FAU - Yamamoto, Masahiro AU - Yamamoto M FAU - Takeda, Kiyoshi AU - Takeda K LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't PL - United States TA - Biochem Biophys Res Commun JT - Biochemical and biophysical research communications JID - 0372516 RN - 0 (CD11c Antigen) RN - 0 (Hbegf protein, mouse) RN - 0 (Heparin-binding EGF-like Growth Factor) RN - 0 (Intercellular Signaling Peptides and Proteins) RN - EC 2.7.7.- (Cre recombinase) RN - EC 2.7.7.- (Integrases) SB - IM MH - Animals MH - CD11c Antigen/genetics MH - Dendritic Cells/*immunology MH - Heparin-binding EGF-like Growth Factor MH - Integrases/genetics MH - Intercellular Signaling Peptides and Proteins/genetics MH - Mice MH - Mice, Transgenic MH - *Models, Animal MH - Promoter Regions, Genetic EDAT- 2010/07/10 06:00 MHDA- 2010/08/13 06:00 CRDT- 2010/07/10 06:00 PHST- 2010/07/10 06:00 [entrez] PHST- 2010/07/10 06:00 [pubmed] PHST- 2010/08/13 06:00 [medline] AID - S0006-291X(10)01087-9 [pii] AID - 10.1016/j.bbrc.2010.05.157 [doi] PST - ppublish SO - Biochem Biophys Res Commun. 2010 Jul 2;397(3):559-63. doi: 10.1016/j.bbrc.2010.05.157.