Abstract:
:Locally applied radiation to the tumor is reported to stimulate systemic immune response. During radiotherapy to the abdominal cancer, spleen often receives certain dose, though as an important immune organ, little is known about the impact of splenic irradiation (SI) on systemic immune and local tumor control. Through a mice model, we found that the combination of SI with tumor irradiation (TI) helped in local control. The analysis of the tumor infiltrating leucocytes demonstrated that SI plus TI brought more T cell aggregation in the tumor microenvironment (TME), which helped in tumor control. Increased T cell infiltration may be partly due to higher expression of T cell chemokine in the TME and more expression of CXCR3 on the T cells in the spleen after SI. SI produced more IL-1β in the spleen, IL-1β stimulated the expression of CXCR3 on the T cells, and enhanced their migration ability. Taken together, radiation to the spleen combined with TI helped in local control through promoting T cell infiltration, and may be a considerable means to enhance the immunomodulatory of radiotherapy.
journal_name
Biochem Biophys Res Communjournal_title
Biochemical and biophysical research communicationsauthors
Chen HY,Xie HY,Liu XX,Li LF,Bai YR,Gao JXdoi
10.1016/j.bbrc.2019.01.071subject
Has Abstractpub_date
2019-02-26 00:00:00pages
156-162issue
1eissn
0006-291Xissn
1090-2104pii
S0006-291X(19)30085-3journal_volume
510pub_type
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