A leak pathway for luminal protons in endosomes drives oncogenic signalling in glioblastoma.
A leak pathway for luminal protons in endosomes drives oncogenic signalling in glioblastoma.
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内体中腔质子的泄漏途径驱动胶质母细胞瘤中的致癌信号传导。
DOI:
10.1038/ncomms7289
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发表时间:
2015-02-09
影响因子:
16.6
通讯作者:
Rao, Rajini
中科院分区:
文献类型:
--
作者:
Kondapalli, Kalyan C.;Llongueras, Jose P.;Capilla-Gonzalez, Vivian;Prasad, Hari;Hack, Anniesha;Smith, Christopher;Guerrero-Cazares, Hugo;Quinones-Hinojosa, Alfredo;Rao, Rajini
Epidermal growth factor receptor (EGFR) signaling is a potent driver of glioblastoma, a malignant and lethal form of brain cancer. Disappointingly, inhibitors targeting receptor tyrosine kinase activity are not clinically effective, and EGFR persists on the plasma membrane to maintain tumor growth and invasiveness. Here we show that endolysosomal pH is critical for receptor sorting and turnover. By functioning as a leak pathway for protons, the Na+/H+ exchanger NHE9 limits luminal acidification to circumvent EGFR turnover and prolong downstream signaling pathways that drive tumor growth and migration. In glioblastoma, NHE9 expression is associated with stem/progenitor characteristics, radiochemoresistance, poor prognosis and invasive growth in vitro and in vivo. Silencing or inhibition of NHE9 in brain tumor initiating cells attenuates tumorsphere formation and improves efficacy of EGFR inhibitor. Thus, NHE9 mediates inside-out control of oncogenic signaling and is a highly druggable target for pan-specific receptor clearance in cancer therapy.
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影响因子:
3.3
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Bowers, K;Levi, BP;Stevens, TH
通讯作者:
Stevens, TH
影响因子:
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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
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Schultz N
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MIETTINEN, PJ;BERGER, JE;DERYNCK, R
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DERYNCK, R
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Lou Xinhan;Matsushita, Masafumi;Kanazawa, Hiroshi
通讯作者:
Kanazawa, Hiroshi
影响因子:
5.3
作者:
Kondapalli KC;Prasad H;Rao R
通讯作者:
Rao R