Abstract:
:Understanding molecular mechanisms that dictate B cell diversity is important for targeting B cells as anti-cancer treatment. Through the single-cell dissection of B cell heterogeneity in longitudinal samples of patients with breast cancer before and after neoadjuvant chemotherapy, we revealed that an ICOSL+ B cell subset emerges after chemotherapy. Using three immunocompetent mouse models, we recapitulated the subset switch of human tumor-infiltrating B cells during chemotherapy. By employing B-cell-specific deletion mice, we showed that ICOSL in B cells boosts anti-tumor immunity by enhancing the effector to regulatory T cell ratio. The signature of ICOSL+ B cells is imprinted by complement-CR2 signaling, which is triggered by immunogenic cell death. Moreover, we identified that CD55, a complement inhibitory protein, determines the opposite roles of B cells in chemotherapy. Collectively, we demonstrated a critical role of the B cell subset switch in chemotherapy response, which has implications in designing novel anti-cancer therapies. VIDEO ABSTRACT.
journal_name
Celljournal_title
Cellauthors
Lu Y,Zhao Q,Liao JY,Song E,Xia Q,Pan J,Li Y,Li J,Zhou B,Ye Y,Di C,Yu S,Zeng Y,Su Sdoi
10.1016/j.cell.2020.02.015subject
Has Abstractpub_date
2020-03-19 00:00:00pages
1081-1097.e24issue
6eissn
0092-8674issn
1097-4172pii
S0092-8674(20)30159-8journal_volume
180pub_type
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