Multipotency of CD11bhighGr-1+ immature myeloid cells accumulating in oral squamous cell carcinoma-bearing mice.

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 Oncol

journal_title

Oral oncology

authors

Tanaka K,Jinhua P,Omura K,Azuma M

doi

10.1016/j.oraloncology.2006.06.009

subject

Has Abstract

pub_date

2007-07-01 00:00:00

pages

586-92

issue

6

eissn

1368-8375

issn

1879-0593

pii

S1368-8375(06)00195-3

journal_volume

43

pub_type

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