Identification of the Immune Cell Infiltration Landscape in Hepatocellular Carcinoma to Predict Prognosis and Guide Immunotherapy

Background: Globally, hepatocellular carcinoma (HCC) is the sixth most frequent malignancy with a high incidence and a poor prognosis. Immune cell infiltration (ICI) underlies both the carcinogenesis and immunogenicity of tumors. However, a comprehensive classification system based on the immune fea...

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Autores principales: Shiyan Yang, Yajun Cheng, Xiaolong Wang, Ping Wei, Hui Wang, Shanzhong Tan
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Publicado: Frontiers Media S.A. 2021
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spelling oai:doaj.org-article:ac56ca2cf3ab4513a3410e9c20bea3772021-11-30T20:48:01ZIdentification of the Immune Cell Infiltration Landscape in Hepatocellular Carcinoma to Predict Prognosis and Guide Immunotherapy1664-802110.3389/fgene.2021.777931https://doaj.org/article/ac56ca2cf3ab4513a3410e9c20bea3772021-11-01T00:00:00Zhttps://www.frontiersin.org/articles/10.3389/fgene.2021.777931/fullhttps://doaj.org/toc/1664-8021Background: Globally, hepatocellular carcinoma (HCC) is the sixth most frequent malignancy with a high incidence and a poor prognosis. Immune cell infiltration (ICI) underlies both the carcinogenesis and immunogenicity of tumors. However, a comprehensive classification system based on the immune features for HCC remains unknown.Methods: The HCC dataset from The Cancer Genome Atlas (TCGA) and International Cancer Genome Consortium (ICGC) cohorts was used in this study. The ICI patterns of 571 patients were characterized using two algorithms: the patterns were determined based on the ICI using the ConsensusClusterPlus package, and principal component analysis (PCA) established the ICI scores. Differences in the immune landscape, biological function, and somatic mutations across ICI scores were evaluated and compared, followed by a predictive efficacy evaluation of ICI scores for immunotherapy by the two algorithms and validation using an external immunotherapy cohort.Results: Based on the ICI profile of the HCC patients, three ICI patterns were identified, including three subtypes having different immunological features. Individual ICI scores were determined; the high ICI score subtype was characterized by enhanced activation of immune-related signaling pathways and a significantly high tumor mutation burden (TMB); concomitantly, diminished immunocompetence and enrichment of pathways associated with cell cycle and RNA degradation were found in the low ICI score subtype. Taken together, our results contribute to a better understanding of an active tumor and plausible reasons for its poor prognosis.Conclusion: The present study reveals that ICI scores may serve as valid prognostic biomarkers for immunotherapy in HCC.Shiyan YangShiyan YangYajun ChengXiaolong WangPing WeiHui WangShanzhong TanFrontiers Media S.A.articlecarcinomaimmune cell infiltration landscapeimmunotherapyICI scoresprognosisGeneticsQH426-470ENFrontiers in Genetics, Vol 12 (2021)
institution DOAJ
collection DOAJ
language EN
topic carcinoma
immune cell infiltration landscape
immunotherapy
ICI scores
prognosis
Genetics
QH426-470
spellingShingle carcinoma
immune cell infiltration landscape
immunotherapy
ICI scores
prognosis
Genetics
QH426-470
Shiyan Yang
Shiyan Yang
Yajun Cheng
Xiaolong Wang
Ping Wei
Hui Wang
Shanzhong Tan
Identification of the Immune Cell Infiltration Landscape in Hepatocellular Carcinoma to Predict Prognosis and Guide Immunotherapy
description Background: Globally, hepatocellular carcinoma (HCC) is the sixth most frequent malignancy with a high incidence and a poor prognosis. Immune cell infiltration (ICI) underlies both the carcinogenesis and immunogenicity of tumors. However, a comprehensive classification system based on the immune features for HCC remains unknown.Methods: The HCC dataset from The Cancer Genome Atlas (TCGA) and International Cancer Genome Consortium (ICGC) cohorts was used in this study. The ICI patterns of 571 patients were characterized using two algorithms: the patterns were determined based on the ICI using the ConsensusClusterPlus package, and principal component analysis (PCA) established the ICI scores. Differences in the immune landscape, biological function, and somatic mutations across ICI scores were evaluated and compared, followed by a predictive efficacy evaluation of ICI scores for immunotherapy by the two algorithms and validation using an external immunotherapy cohort.Results: Based on the ICI profile of the HCC patients, three ICI patterns were identified, including three subtypes having different immunological features. Individual ICI scores were determined; the high ICI score subtype was characterized by enhanced activation of immune-related signaling pathways and a significantly high tumor mutation burden (TMB); concomitantly, diminished immunocompetence and enrichment of pathways associated with cell cycle and RNA degradation were found in the low ICI score subtype. Taken together, our results contribute to a better understanding of an active tumor and plausible reasons for its poor prognosis.Conclusion: The present study reveals that ICI scores may serve as valid prognostic biomarkers for immunotherapy in HCC.
format article
author Shiyan Yang
Shiyan Yang
Yajun Cheng
Xiaolong Wang
Ping Wei
Hui Wang
Shanzhong Tan
author_facet Shiyan Yang
Shiyan Yang
Yajun Cheng
Xiaolong Wang
Ping Wei
Hui Wang
Shanzhong Tan
author_sort Shiyan Yang
title Identification of the Immune Cell Infiltration Landscape in Hepatocellular Carcinoma to Predict Prognosis and Guide Immunotherapy
title_short Identification of the Immune Cell Infiltration Landscape in Hepatocellular Carcinoma to Predict Prognosis and Guide Immunotherapy
title_full Identification of the Immune Cell Infiltration Landscape in Hepatocellular Carcinoma to Predict Prognosis and Guide Immunotherapy
title_fullStr Identification of the Immune Cell Infiltration Landscape in Hepatocellular Carcinoma to Predict Prognosis and Guide Immunotherapy
title_full_unstemmed Identification of the Immune Cell Infiltration Landscape in Hepatocellular Carcinoma to Predict Prognosis and Guide Immunotherapy
title_sort identification of the immune cell infiltration landscape in hepatocellular carcinoma to predict prognosis and guide immunotherapy
publisher Frontiers Media S.A.
publishDate 2021
url https://doaj.org/article/ac56ca2cf3ab4513a3410e9c20bea377
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