Significant downregulation of platelet gene expression in metastatic lung cancer.

Significant downregulation of platelet gene expression in metastatic lung cancer.
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DOI:
10.1111/j.1752-8062.2010.00226.x
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发表时间:
2010-10
期刊:
Clinical and translational science
影响因子:
--
通讯作者:
Geraci MW
Geraci MW
中科院分区:
其他
文献类型:
--
作者:
Calverley DC;Phang TL;Choudhury QG;Gao B;Oton AB;Weyant MJ;Geraci MW

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Platelets play a major role in the metastatic dissemination of tumor cells in vivo. Recent evidence reveals megakaryocyte-derived platelet pre-mRNA is spliced to mRNA and then translated into functional proteins in response to external stimulation. Employing a human lung cancer model, we hypothesized a subset of megakaryocyte/platelet genes exists that are significantly over or underexpressed in metastasis compared with non-cancer. Microarray analysis employing platelet mRNA followed by unsupervised hierarchical clustering revealed an expression profile that includes decreased expression of 197 of the 200 platelet genes with the most altered expression (P<1.0×10-4). Among the 608 splicing events identified between the metastasis and negative control groups, 33 highly variable genes were identified with between 3 and 13 splicing events each. In conclusion this preliminary study reveals a platelet-based gene expression signature that differentiates metastatic lung cancer from negative controls on the basis of decreased expression of 197 of the 200 genes with the most altered expression levels. Further study may yield a prognostic tool for future metastasis among subsets of early stage lung cancer patients.
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