Research Project
Grant-in-Aid for Scientific Research (C)
Splenic red pulp macrophages (RPM) degrade senescent erythrocytes and recycle heme-associated iron. The transcription factor SPI-C is selectively expressed by RPM and is required for their development, but the physiologic stimulus inducing Spic is unknown. We found that Spic regulated the development of bone marrow macrophages (BMM) and that Spic expression was induced by heme. Spic expression in monocytes was constitutively inhibited by the transcriptional repressor BACH1. These findings are the first example of metabolite-driven differentiation of a tissue-resident macrophage subset and provide new insights into iron homeositasis. Hmox1 (HO-1) is the enzyme that catabolizes free heme into biliverdin, iron, and CO. To analyze the function of RPM in malaria parasite clearance, we infected HO-1 conditional KO mice that lack RPM. Through the analysis of this cKO mice, we found unexpected role of RPM in parasite clearance.
All 2016 2015 2014 2013 Other
All Journal Article (10 results) (of which Peer Reviewed: 10 results, Acknowledgement Compliant: 3 results, Open Access: 4 results) Presentation (15 results) Remarks (3 results)
Eur J Immunol.
Volume: in press Issue: 5 Pages: 1214-1223
10.1002/eji.201545897
RAG-mediated DNA double-strand breaks activate a cell type-specific checkpoint to inhibit pre-B cell receptor signals.
Volume: 213 Issue: 2 Pages: 209-223
10.1084/jem.20151048
J Biol Chem.
Volume: 290 Issue: 32 Pages: 19833-19843
10.1074/jbc.m114.635508
Blood
Volume: 125 Issue: 18 Pages: 2835-2844
10.1182/blood-2014-08-593624
Int. Immunol.
Volume: - Issue: 6 Pages: 307-314
10.1093/intimm/dxv004
Microbiol Immunol.
Volume: 58(9) Issue: 9 Pages: 513-522
10.1111/1348-0421.12180
40020207309
Cell Host Microbe
Volume: 15 Issue: 5 Pages: 551-563
10.1016/j.chom.2014.04.008
Cell
Volume: 156 Issue: 6 Pages: 1223-1234
10.1016/j.cell.2014.01.069
Proceedings of National Academy of Science USA
Volume: 111 Issue: 10 Pages: 3787-3792
10.1073/pnas.1401105111
Volume: 25 Issue: 4 Pages: 235-246
10.1093/intimm/dxs155
http://immchem.biken.osaka-u.ac.jp/