Oncogene-targeting T cells reject large tumors while oncogene inactivation selects escape variants in mouse models of cancer.

Oncogene-targeting T cells reject large tumors while oncogene inactivation selects escape variants in mouse models of cancer.
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DOI:
10.1016/j.ccr.2011.10.019
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发表时间:
2011-12-13
期刊:
影响因子:
50.3
通讯作者:
Blankenstein T
Blankenstein T
中科院分区:
医学1区
文献类型:
--
作者:
Anders K;Buschow C;Herrmann A;Milojkovic A;Loddenkemper C;Kammertoens T;Daniel P;Yu H;Charo J;Blankenstein T

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The genetic instability of cancer cells frequently causes drug resistance. We established mouse cancer models, which allowed targeting of an oncogene by drug-mediated inactivation or mono-specific CD8+ effector T (TE) cells. Drug treatment of genetically-unstable large tumors was effective but selected resistant clones in the long term. In contrast, TE cells completely rejected large tumors (≥500 mm3), if the target antigen was cancer-driving and expressed in sufficient amounts. While drug-mediated oncogene inactivation selectively killed the cancer cells and left the tumor vasculature intact, which likely facilitated survival and growth of resistant clones, TE cell treatment led to blood vessel destruction and probably “bystander” elimination of escape variants, which did not require antigen cross-presentation by stromal cells.
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