Loss of Integrin α9β1 on Tumor Keratinocytes Enhances the Stromal Vasculature and Growth of Cutaneous Tumors.
Loss of Integrin α9β1 on Tumor Keratinocytes Enhances the Stromal Vasculature and Growth of Cutaneous Tumors.
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肿瘤角质形成细胞上整合素α-9-β-1的缺失促进了皮肤肿瘤间质血管的形成和生长。
DOI:
10.1016/j.jid.2021.11.020
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发表时间:
2022-07
期刊:
影响因子:
--
通讯作者:
Van De Water L
中科院分区:
文献类型:
--
作者:
Varney SD;Wu L;Longmate WM;DiPersio CM;Van De Water L
Angiogenesis is critical to tumor progression and the function of integrins in tumor angiogenesis is complex. Here we report that loss of integrin α9β1 expression from epidermal tumor cells is critical to maintain persistent stromal vessel density. Forced expression of α9 in transformed mouse keratinocytes dramatically reduces vessel density in allograft tumors, in vivo, compared to the same cells lacking α9β1. Moreover, α9 mRNA expression is dramatically reduced in mouse and human epidermal tumors as is α9β1-dependent gene regulation. Loss of tumor cell α9β1 occurs through at least two mechanisms: (1) ITGA9 gene copy number loss in human tumors, and (2) epigenetic silencing in mouse and human tumors. Importantly, we show that reversal of epigenetic silencing of Itga9 restores α9 expression in mouse keratinocytes, and that human tumors without ITGA9 copy number loss have increased promoter methylation. Our data suggest that for epidermal tumorigenesis to occur, tumor cells must avoid the tumor and angiogenic suppressive effects of α9β1 by repressing its expression through deletion and/or epigenetic silencing, thereby promoting stromal development and tumor growth.
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影响因子:
7.3
作者:
Gao J;Aksoy BA;Dogrusoz U;Dresdner G;Gross B;Sumer SO;Sun Y;Jacobsen A;Sinha R;Larsson E;Cerami E;Sander C;Schultz N
通讯作者:
Schultz N
影响因子:
5.8
作者:
Liberzon, Arthur;Subramanian, Aravind;Mesirov, Jill P.
通讯作者:
Mesirov, Jill P.
影响因子:
11.8
作者:
Bazigou, Eleni;Xie, Sherry;Chen, Chun;Weston, Anne;Miura, Naoyuki;Sorokin, Lydia;Adams, Ralf;Muro, Andres F.;Sheppard, Dean;Makinen, Taija
通讯作者:
Makinen, Taija
影响因子:
14.9
作者:
Colaprico A;Silva TC;Olsen C;Garofano L;Cava C;Garolini D;Sabedot TS;Malta TM;Pagnotta SM;Castiglioni I;Ceccarelli M;Bontempi G;Noushmehr H
通讯作者:
Noushmehr H
DOI:
10.1083/jcb.107.6.2757
发表时间:
1988-12
期刊:
The Journal of cell biology
影响因子:
--
作者:
Mackie EJ;Halfter W;Liverani D
通讯作者:
Liverani D