Abstract:
:We demonstrated the accumulation of CD11b(high)Gr-1(+) cells in a murine model of squamous cell carcinoma (SCC). Inoculation of NR-S1K cells derived from oral SCC induced a rapid and clear accumulation of CD11b(high)Gr-1(+) cells in secondary lymphoid organs as well as in peripheral blood. Phenotypic and morphological analyses revealed that these CD11b(high)Gr-1(+) cells were not lymphoid lineage cells, mature dendritic cells, macrophages, or granulocytes. Although the freshly isolated CD11b(high) cells lacked antigen-presenting capacity, they acquired a potent antigen-presenting capacity that included the induction of MHC class II after culture with GM-CSF and IL-4 in vitro. These results suggest that CD11b(high) cells that accumulate in tumor-bearing hosts are immature myeloid cells, but have considerable potential to differentiate into potent antigen-presenting cells under appropriate culture conditions. The use of in vitro differentiated CD11b(high) cells may be a potential strategy for obtaining patient-matched dendritic cells for tumor immunotherapy.
journal_name
Oral Oncoljournal_title
Oral oncologyauthors
Tanaka K,Jinhua P,Omura K,Azuma Mdoi
10.1016/j.oraloncology.2006.06.009subject
Has Abstractpub_date
2007-07-01 00:00:00pages
586-92issue
6eissn
1368-8375issn
1879-0593pii
S1368-8375(06)00195-3journal_volume
43pub_type
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