Integrated Machine Learning and Bioinformatic Analyses Constructed a Novel Stemness-Related Classifier to Predict Prognosis and Immunotherapy Responses for Hepatocellular Carcinoma Patients

Immunotherapy has made great progress in hepatocellular carcinoma (HCC), yet there is still a lack of biomarkers for predicting response to it. Cancer stem cells (CSCs) are the primary cause of the tumorigenesis, metastasis, and multi-drug resistance of HCC. This study aimed to propose a novel CSCs-...

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Bibliographic Details
Published in:International journal of biological sciences 2022, Vol.18 (1), p.360-373
Main Authors: Chen, Dongjie, Liu, Jixing, Zang, Longjun, Xiao, Tijun, Zhang, Xianlin, Li, Zheng, Zhu, Hongwei, Gao, Wenzhe, Yu, Xiao
Format: Article
Language:English
Subjects:
Carcinoma, Hepatocellular - genetics
Carcinoma, Hepatocellular - therapy
Computational Biology
Humans
Immunotherapy - methods
Liver Neoplasms - genetics
Liver Neoplasms - therapy
Machine Learning
Neoplastic Stem Cells - pathology
Prognosis
Research Paper
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Summary:Immunotherapy has made great progress in hepatocellular carcinoma (HCC), yet there is still a lack of biomarkers for predicting response to it. Cancer stem cells (CSCs) are the primary cause of the tumorigenesis, metastasis, and multi-drug resistance of HCC. This study aimed to propose a novel CSCs-related cluster of HCC to predict patients' response to immunotherapy. Based on RNA-seq datasets from The Cancer Genome Atlas (TCGA) and Progenitor Cell Biology Consortium (PCBC), one-class logistic regression (OCLR) algorithm was applied to compute the stemness index (mRNAsi) of HCC patients. Unsupervised consensus clustering was performed to categorize HCC patients into two stemness subtypes which further proved to be a predictor of tumor immune microenvironment (TIME) status, immunogenomic expressions and sensitivity to neoadjuvant therapies. Finally, four machine learning algorithms (LASSO, RF, SVM-RFE and XGboost) were applied to distinguish different stemness subtypes. Thus, a five-hub-gene based classifier was constructed in TCGA and ICGC HCC datasets to predict patients' stemness subtype in a more convenient and applicable way, and this novel stemness-based classification system could facilitate the prognostic prediction and guide clinical strategies of immunotherapy and targeted therapy in HCC.
ISSN:1449-2288
1449-2288
DOI:10.7150/ijbs.66913