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Landscape of Infiltrating T Cells in Liver Cancer Revealed by Single-Cell Sequencing

Posted on June 16, 2017

Systematic interrogation of tumor-infiltrating lymphocytes is key to the development of immunotherapies and the prediction of their clinical responses in cancers. We performed deep single-cell RNA sequencing on 5,063 single T cells isolated from peripheral blood, tumor, and adjacent normal tissues from six hepatocellular carcinoma patients. The transcriptional profiles of these individual cells, coupled with assembled T cell receptor (TCR) sequences, enable us to identify 11 T cell subsets based on their molecular and functional properties and delineate their developmental trajectory. Specific subsets such as exhausted CD8+ T cells and Tregs are preferentially enriched and potentially clonally expanded in hepatocellular carcinoma (HCC), and we identified signature genes for each subset. One of the genes, layilin, is upregulated on activated CD8+ T cells and Tregs and represses the CD8+ T cell functions in vitro. This compendium of transcriptome data provides valuable insights and a rich resource for understanding the immune landscape in cancers.

 

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Want to touch cancer big data in 1 second? Go GEPIA!

Posted on May 4, 2017

Tremendous amount of RNA sequencing data have been produced by large consortium projects such as TCGA and GTEx, creating new opportunities for data mining and deeper understanding of gene functions. We introduce GEPIA (Gene Expression Profiling Interactive Analysis), a web-based tool to deliver fast and customizable functionalities based on TCGA and GTEx data. GEPIA is available at http://gepia.cancer-pku.cn/.

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Check out our APP – GE-mini

Posted on April 20, 2016

Here we present to you our new Android APP: GE-mini.

This GE-mini APP is designed to exhibit gene expression profiling of a given gene over many tissue types including tumors. The underlying data are based on RNA Sequencing results from both TCGA and GTEx after they are normalized and integrated. The current version, based on the September 2015 release of TCGA and the phs000424.v6.p1 release of GTEx, contains >19,000 total samples across 33 cancer types and 53 normal tissue types.

Created: Apr 11, 2018 | 22:02