کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
2107806 | 1083702 | 2014 | 13 صفحه PDF | دانلود رایگان |
• Human SCCs associated with high-risk HPV are infiltrated by Ig-producing B cells
• B cell depletion or FcγR signaling inhibition impedes SCC neoplastic progression
• Therapeutic B cell depletion enhances response of established SCCs to chemotherapy
• B cell depletion reprograms macrophages to recruit CD8+ T cells to SCCs via CCR5
SummaryB cells foster squamous cell carcinoma (SCC) development through deposition of immunoglobulin-containing immune complexes in premalignant tissue and Fcγ receptor-dependent activation of myeloid cells. Because human SCCs of the vulva and head and neck exhibited hallmarks of B cell infiltration, we examined B cell-deficient mice and found reduced support for SCC growth. Although ineffective as a single agent, treatment of mice bearing preexisting SCCs with B cell-depleting αCD20 monoclonal antibodies improved response to platinum- and Taxol-based chemotherapy. Improved chemoresponsiveness was dependent on altered chemokine expression by macrophages that promoted tumor infiltration of activated CD8+ lymphocytes via CCR5-dependent mechanisms. These data reveal that B cells, and the downstream myeloid-based pathways they regulate, represent tractable targets for anticancer therapy in select tumors.
Journal: - Volume 25, Issue 6, 16 June 2014, Pages 809–821