PMID- 18344617 OWN - NLM STAT- MEDLINE DCOM- 20080725 LR - 20190513 IS - 0449-3060 (Print) IS - 0449-3060 (Linking) VI - 49 IP - 3 DP - 2008 May TI - Differential induction from X-irradiated human peripheral blood monocytes to dendritic cells. PG - 293-303 AB - Dendritic cells (DCs) are a type of antigen-presenting cell which plays an essential role in the immune system. To clarify the influences of ionizing radiation on the differentiation to DCs, we focused on human peripheral blood monocytes and investigated whether X-irradiated monocytes can differentiate into DCs. The non-irradiated monocytes and 5 Gy-irradiated monocytes were induced into immature DCs (iDCs) and mature DCs (mDCs) with appropriate cytokine stimulation, and the induced cells from each monocyte expressed each DC-expressing surface antigen such as CD40, CD86 and HLA-DR. However, the expression levels of CD40 and CD86 on the iDCs derived from the 5 Gy-irradiated monocytes were higher than those of iDCs derived from non-irradiated monocytes. Furthermore, the mDCs derived from 5 Gy-irradiated monocytes had significantly less ability to stimulate allogeneic T cells in comparison to the mDCs derived from non-irradiated monocytes. There were no significant differences in the phagocytotic activity of the iDCs and cytokines detected in the supernatants conditioned by the DCs from the non-irradiated and irradiated monocytes. These results suggest that human monocytes which are exposed to ionizing radiation can thus differentiate into DCs, but there is a tendency that X-irradiation leads to an impairment of the function of DCs. FAU - Yoshino, Hironori AU - Yoshino H AD - Department of Radiological Life Sciences, Hirosaki University Graduate School of Health Sciences, Hirosaki, Aomori, Japan. FAU - Takahashi, Kenji AU - Takahashi K FAU - Monzen, Satoru AU - Monzen S FAU - Kashiwakura, Ikuo AU - Kashiwakura I LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20080314 PL - England TA - J Radiat Res JT - Journal of radiation research JID - 0376611 SB - IM MH - Cell Differentiation/*radiation effects MH - Cells, Cultured MH - Dendritic Cells/*immunology MH - Humans MH - Lymphocyte Culture Test, Mixed MH - Monocytes/*physiology/*radiation effects MH - Phagocytosis EDAT- 2008/03/18 09:00 MHDA- 2008/07/26 09:00 CRDT- 2008/03/18 09:00 PHST- 2008/03/18 09:00 [pubmed] PHST- 2008/07/26 09:00 [medline] PHST- 2008/03/18 09:00 [entrez] AID - JST.JSTAGE/jrr/07122 [pii] AID - 10.1269/jrr.07122 [doi] PST - ppublish SO - J Radiat Res. 2008 May;49(3):293-303. doi: 10.1269/jrr.07122. Epub 2008 Mar 14.