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Malignant pleural effusion cells show aberrant glucose metabolism gene expression

C-C. Lin, L-C. Chen, V.S. Tseng, J-J. Yan, W-W. Lai, W-P. Su, C-H. Lin, C-Y.F. Huang, W-C. Su
European Respiratory Journal 2010; DOI: 10.1183/09031936.00015710
C-C. Lin
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L-C. Chen
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V.S. Tseng
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J-J. Yan
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W-W. Lai
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W-P. Su
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C-H. Lin
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C-Y.F. Huang
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  • For correspondence: cyhuang5@ym.edu.tw
W-C. Su
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  • For correspondence: sunnysu@mail.ncku.edu.tw
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Abstract

Malignant pleural effusion (MPE) accompanying lung adenocarcinoma indicates poor prognosis and early metastasis. This study aimed to identify genes related to MPE formation.

Three tissue sample cohorts - seven from healthy lungs, 18 from stage I–III lung adenocarcinoma with adjacent healthy lung tissue, and 13 from lung adenocarcinomas with MPE were analysed by oligonucleotide microarray. The identified genes were verified by quantitative real-time polymerase chain reaction (qRT-PCR), immunohistochemical staining, and immunofluorescence confocal microscopy.

Twenty up- or down-regulated genes with a two-fold change in MPE cancer cells compared to healthy tissues were differentially expressed from early- to late-stage lung cancer. Of 13 genes related to cellular metabolism, aldolase A (ALDOA), sorbitol dehydrogenase (SORD), transketolase (TKT), and tuberous sclerosis 1 (TSC1) were related to glucose metabolism. QRT-PCR validated their mRNA expressions in pleural metastatic samples. Immunohistochemical staining confirmed aberrant TKT, ALDOA, and TSC1 expressions in tumour cells. Immunofluorescence confirmed TKT co-localization and co-distribution of ALDOA with thyroid transcription factor 1 (TTF-1) positive cancer cells. TKT regulated the proliferation, vascular endothelial growth factor (VEGF) secretion in vitro and in vivo vascular permeability of cancer cell.

Glucose metabolic reprogramming by ALDOA, SORD, TKT, and TSC1 is important in MPE pathogenesis.

  • Glucose metabolism genes
  • lung adenocarcinoma
  • malignant pleural effusion
  • ERS
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Malignant pleural effusion cells show aberrant glucose metabolism gene expression
C-C. Lin, L-C. Chen, V.S. Tseng, J-J. Yan, W-W. Lai, W-P. Su, C-H. Lin, C-Y.F. Huang, W-C. Su
European Respiratory Journal Jan 2010, erj00157-2010; DOI: 10.1183/09031936.00015710

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Malignant pleural effusion cells show aberrant glucose metabolism gene expression
C-C. Lin, L-C. Chen, V.S. Tseng, J-J. Yan, W-W. Lai, W-P. Su, C-H. Lin, C-Y.F. Huang, W-C. Su
European Respiratory Journal Jan 2010, erj00157-2010; DOI: 10.1183/09031936.00015710
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