Abstract:
:DCs (dendritic cells) are the strongest professional APCs (antigen-presenting cells) to initiate immune responses against pathogens, but they are usually incompetent in initiating efficient immune responses in the progress of solid tumours. We have shown that Notch signalling plays a pivotal role in DC-dependent anti-tumour immunity. Compared with the control DCs, OP9-DL1 (Delta-like1) cell co-cultured DCs gained increased tumour suppression activity when inoculated together with tumour cells. This was probably due to the activation of Notch signalling in DCs enhancing their ability to evoke anti-tumour immune responses in solid tumours. Indeed, the OP9-DL1 cell co-cultured DCs expressed higher levels of MHC I, MHC II, CXCR4 (CXC chemokine receptor 4), CCR7 (CC chemokine receptor 7), IL-6 (interleukin 6), IL-12 and TNFα (tumour necrosis factor α), and a lower level of IL-10 than control DCs, resulting in more efficient DC migration and T-cell activation in vivo and in vitro. T-cells stimulated by OP9-DL1 cells co-cultured DCs more efficiently; and were cytotoxic against tumour cells, in contrast with control DCs. These results indicated that up-regulation of Notch signalling in DCs by co-culturing with OP9-DL1 cells enhances DC-dependent anti-tumour immune reactions, making the Notch signalling pathway a target for the establishment of the DC-based anti-tumour immunotherapies.
journal_name
Cell Biol Intjournal_title
Cell biology internationalauthors
Feng F,Yang J,Tong L,Yuan S,Tian Y,Hong L,Wang W,Zhang Hdoi
10.1042/CBI20100462subject
Has Abstractpub_date
2012-03-01 00:00:00pages
297-303issue
3eissn
1065-6995issn
1095-8355pii
CBI20100462journal_volume
36pub_type
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