Evolutionary dynamics of neoantigens in growing tumours
Evolutionary dynamics of neoantigens in growing tumours
复制标题
生长肿瘤中新抗原的进化动力学
DOI:
--
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发表时间:
2019
期刊:
影响因子:
--
通讯作者:
T. Graham
中科院分区:
文献类型:
--
作者:
E. Lakatos;Marc J. Williams;R. Schenck;W. Cross;J. Househam;B. Werner;Chandler D. Gatenbee;M. Robertson;Chris P. Barnes;Alexander R. A. Anderson;A. Sottoriva;T. Graham
Cancer evolution is driven by the acquisition of somatic mutations that provide cells with a beneficial phenotype in a changing microenvironment. However, mutations that give rise to neoantigens, novel cancer–specific peptides that elicit an immune response, are likely to be disadvantageous. Here we show how the clonal structure and immunogenotype of growing tumours is shaped by negative selection in response to neoantigenic mutations. We construct a mathematical model of neoantigen evolution in a growing tumour, and verify the model using genomic sequencing data. The model predicts that, in the absence of active immune escape mechanisms, tumours either evolve clonal neoantigens (antigen– ‘hot’), or have no clonally– expanded neoantigens at all (antigen– ‘cold’), whereas antigen– ‘warm’ tumours (with high frequency subclonal neoantigens) form only following the evolution of immune evasion. Counterintuitively, strong negative selection for neoantigens during tumour formation leads to an increased number of antigen– warm or – hot tumours, as a consequence of selective pressure for immune escape. Further, we show that the clone size distribution under negative selection is effectively– neutral, and moreover, that stronger negative selection paradoxically leads to more neutral– like dynamics. Analysis of antigen clone sizes and immune escape in colorectal cancer exome sequencing data confirms these results. Overall, we provide and verify a mathematical framework to understand the evolutionary dynamics and clonality of neoantigens in human cancers that may inform patient– specific immunotherapy decision– making.
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DOI:
10.1056/nejmp1607591
发表时间:
2016-09-22
期刊:
The New England journal of medicine
影响因子:
--
作者:
Grossman RL;Heath AP;Ferretti V;Varmus HE;Lowy DR;Kibbe WA;Staudt LM
通讯作者:
Staudt LM
影响因子:
3.3
作者:
Cvijovic, Ivana;Good, Benjamin H.;Desai, Michael M.
通讯作者:
Desai, Michael M.
DOI:
10.1016/s1470-2045(16)30406-5
发表时间:
2016-12
期刊:
The Lancet. Oncology
影响因子:
--
作者:
Gibney GT;Weiner LM;Atkins MB
通讯作者:
Atkins MB
影响因子:
28.2
作者:
Anagnostou V;Smith KN;Forde PM;Niknafs N;Bhattacharya R;White J;Zhang T;Adleff V;Phallen J;Wali N;Hruban C;Guthrie VB;Rodgers K;Naidoo J;Kang H;Sharfman W;Georgiades C;Verde F;Illei P;Li QK;Gabrielson E;Brock MV;Zahnow CA;Baylin SB;Scharpf RB;Brahmer JR;Karchin R;Pardoll DM;Velculescu VE
通讯作者:
Velculescu VE
影响因子:
64.8
作者:
Kreiter S;Vormehr M;van de Roemer N;Diken M;Löwer M;Diekmann J;Boegel S;Schrörs B;Vascotto F;Castle JC;Tadmor AD;Schoenberger SP;Huber C;Türeci Ö;Sahin U
通讯作者:
Sahin U