Clinical relevance of EMT and stem-like gene expression in circulating tumor cells of metastatic colorectal cancer patients.
Clinical relevance of EMT and stem-like gene expression in circulating tumor cells of metastatic colorectal cancer patients.
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DOI:
10.1038/tpj.2016.62
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发表时间:
2018-01
期刊:
影响因子:
--
通讯作者:
Lenz HJ
中科院分区:
文献类型:
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作者:
Ning Y;Zhang W;Hanna DL;Yang D;Okazaki S;Berger MD;Miyamoto Y;Suenaga M;Schirripa M;El-Khoueiry A;Lenz HJ
Using approved methods, circulating tumor cells (CTCs) are only isolated from blood in 30%–50% of metastatic colorectal cancer (mCRC) patients. We previously validated a technique to isolate circulating tumor cells (CTCs) in a cohort of mCRC patients by combining immunomagnetic enrichment of EpCAM+/CD45− cells with qRT-PCR amplification of CK20 and survivin expression. Here, we examined the prognostic utility of CTC epithelial-mesenchymal transition (EMT) and stem cell gene expression. An 8 ml blood sample was collected from 78 consecutive mCRC patients before treatment with investigational and standard chemotherapeutics. The mRNA expression of EMT (PI3Ka, Akt-2, Twist1) and stem cell (ALDH1) markers was measured. Associations between CTC gene expression and progression-free survival (PFS) and overall survival (OS) were determined using Cox regression models. Among patients without CK20 or survivin-expressing CTCs (n = 17), 55% had expression of ALDH1, PI3Ka and/or Akt-2. Patients with positive CTC Akt-2 expression had a significantly shorter median PFS (3.0 versus 4.0 months) compared with those without CTC Akt-2 expression in univariable (hazard ratio (HR) = 1.61; log-rank P =0.034) and multivariable analyses (HR= 1.70; adjusted P =0.041). In univariable analysis, CTC ALDH1 expression was associated with shorter OS (10.0 versus 38.6 months; HR = 2.04, P =0.021). Patients with CTCs expressing ALDH1, PI3Ka and/or Akt-2 had a significantly inferior PFS (3.0 versus 7.7 months; HR= 1.88, P = 0.015) and OS (10.0 versus 26.8+ months; HR = 2.25, P = 0.050) in univariable, but not multivariable, analysis. Conclusions: CTC Akt-2 expression may serve as a clinically useful prognostic marker in mCRC patients and warrants further evaluation in prospective trials.
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影响因子:
50.5
作者:
Grover, P. K.;Cummins, A. G.;Hardingham, J. E.
通讯作者:
Hardingham, J. E.
DOI:
10.1186/bcr3099
发表时间:
2012-01-20
期刊:
Breast cancer research : BCR
影响因子:
--
作者:
Kasimir-Bauer S;Hoffmann O;Wallwiener D;Kimmig R;Fehm T
通讯作者:
Fehm T
DOI:
10.1073/pnas.0810715105
发表时间:
2008-12-23
影响因子:
11.1
作者:
Rychahou, Piotr G.;Kang, JungHee;Evers, B. Mark
通讯作者:
Evers, B. Mark
影响因子:
8.8
作者:
Deng, Y.;Zhou, J.;Fang, L.;Cai, Y.;Ke, J.;Xie, X.;Huang, Y.;Huang, M.;Wang, J.
通讯作者:
Wang, J.
影响因子:
82.9
作者:
通讯作者:
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