Expression and activity of carbonic anhydrase IX is associated with metabolic dysfunction in MDA-MB-231 breast cancer cells.

Expression and activity of carbonic anhydrase IX is associated with metabolic dysfunction in MDA-MB-231 breast cancer cells.
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DOI:
10.1080/07357900802653464
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发表时间:
2009-07
影响因子:
2.4
通讯作者:
Frost SC
Frost SC
中科院分区:
医学4区
文献类型:
--
作者:
Li Y;Wang H;Oosterwijk E;Tu C;Shiverick KT;Silverman DN;Frost SC

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碳酸酐酶IX(CAIX)是一种缺氧肿瘤的标志物,其表达与乳腺癌患者的不良预后相关。我们在本文中显示MDA-MB-231细胞(“三阴性”基底B系)仅表达CAIX,而管腔细胞系(T47 D)表达碳酸酐酶XII(CAXII)。CAIX在基底B细胞中的表达是密度和缺氧依赖性的,并且与碳酸酐酶活性相关。通过对pH、乳酸产生和CAIX抑制的研究,提供了CAIX有助于细胞外酸化的证据。总之,这些研究表明CAIX表达和活性与MDA-MB-231细胞中的代谢功能障碍相关。
The expression of carbonic anhydrase IX (CAIX), a marker for hypoxic tumors, is correlated with poor prognosis in breast cancer patients. We show herein that the MDA-MB-231 cells, a “triple-negative,” basal B line, express exclusively CAIX, while a luminal cell line (T47D) expresses carbonic anhydrase XII (CAXII). CAIX expression in the basal B cells is both density-and hypoxia-dependent and is correlated with carbonic anhydrase activity. Evidence is provided that CAIX contributes to extracellular acidification through studies on pH, lactic acid production, and CAIX inhibition. Together, these studies suggest that CAIX expression and activity is associated with metabolic dysfunction in MDA-MB-231 cells.
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