PMID- 37030269 OWN - NLM STAT- MEDLINE DCOM- 20230421 LR - 20230421 IS - 1879-0534 (Electronic) IS - 0010-4825 (Linking) VI - 158 DP - 2023 May TI - Deciphering the immune heterogeneity dominated by natural killer cells with prognostic and therapeutic implications in hepatocellular carcinoma. PG - 106872 LID - S0010-4825(23)00337-2 [pii] LID - 10.1016/j.compbiomed.2023.106872 [doi] AB - Belonging to type 1 innate lymphoid cells (ILC1), natural killer (NK) cells play an important role not only in fighting microbial infections but also in anti-tumor response. Hepatocellular carcinoma (HCC) represents an inflammation-related malignancy and NK cells are enriched in the liver, making them an essential component of the HCC immune microenvironment. In this study, we performed single-cell RNA-sequencing (scRNA-seq) analysis to identify the NK cell marker genes (NKGs) and uncovered 80 prognosis-related ones by the TCGA-LIHC dataset. Based on prognostic NKGs, HCC patients were categorized into two subtypes with distinct clinical outcomes. Subsequently, we conducted LASSO-COX and stepwise regression analysis on prognostic NKGs to establish a five-gene (UBB, CIRBP, GZMH, NUDC, and NCL) prognostic signature-NKscore. Different mutation statuses of the two risk groups stratified by NKscore were comprehensively characterized. Besides, the established NKscore-integrated nomogram presented enhanced predictive performance. Single sample gene set enrichment analysis (ssGSEA) analysis was used to uncover the landscape of the tumor immune microenvironment (TIME) and the high-NKscore risk group was characterized with an immune-exhausted phenotype while the low-NKscore risk group held relatively strong anti-cancer immunity. T cell receptor (TCR) repertoire, tumor inflammation signature (TIS), and Immunophenoscore (IPS) analyses revealed differences in immunotherapy sensitivity between the two NKscore risk groups. Taken together, we developed a novel NK cell-related signature to predict the prognosis and immunotherapy efficacy for HCC patients. CI - Copyright (c) 2023 Elsevier Ltd. All rights reserved. FAU - Guo, Chengbin AU - Guo C AD - Faculty of Medicine, Macau University of Science and Technology, Tapai, Macau, 999078, China. FAU - Tang, Yuqin AU - Tang Y AD - Clinical Bioinformatics Experimental Center, Henan Provincial People's Hospital, Zhengzhou University, 450003, Zhengzhou, China. FAU - Li, Qizhuo AU - Li Q AD - School of Computer Science and Engineering, Sun Yat-sen University, Guangzhou, 510006, China. FAU - Yang, Zhao AU - Yang Z AD - West China School of Medicine, West China Hospital, Sichuan University, Chengdu, 610041, China. FAU - Guo, Yuqi AU - Guo Y AD - Clinical Bioinformatics Experimental Center, Henan Provincial People's Hospital, Zhengzhou University, 450003, Zhengzhou, China. Electronic address: yuqiguo@zzu.edu.cn. FAU - Chen, Chuanliang AU - Chen C AD - Clinical Bioinformatics Experimental Center, Henan Provincial People's Hospital, Zhengzhou University, 450003, Zhengzhou, China. Electronic address: henanccl@163.com. FAU - Zhang, Yongqiang AU - Zhang Y AD - West China School of Medicine, West China Hospital, Sichuan University, Chengdu, 610041, China; Guangzhou Women and Children's Medical Center, Guangzhou Medical University, Guangzhou, 510623, China. Electronic address: zyq1014zyq1014@163.com. LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20230404 PL - United States TA - Comput Biol Med JT - Computers in biology and medicine JID - 1250250 RN - 0 (CIRBP protein, human) RN - 0 (RNA-Binding Proteins) SB - IM MH - Humans MH - Prognosis MH - *Carcinoma, Hepatocellular/genetics/therapy MH - Immunity, Innate MH - *Liver Neoplasms/genetics/therapy MH - Inflammation MH - Killer Cells, Natural MH - Tumor Microenvironment MH - RNA-Binding Proteins OTO - NOTNLM OT - Hepatocellular carcinoma OT - Immune heterogeneity OT - Natural killer cell OT - Prognosis OT - Therapeutic response COIS- Conflict of interest The authors have declared that no competing interest exists. EDAT- 2023/04/09 06:00 MHDA- 2023/04/21 06:41 CRDT- 2023/04/08 18:11 PHST- 2023/02/06 00:00 [received] PHST- 2023/03/15 00:00 [revised] PHST- 2023/03/30 00:00 [accepted] PHST- 2023/04/21 06:41 [medline] PHST- 2023/04/09 06:00 [pubmed] PHST- 2023/04/08 18:11 [entrez] AID - S0010-4825(23)00337-2 [pii] AID - 10.1016/j.compbiomed.2023.106872 [doi] PST - ppublish SO - Comput Biol Med. 2023 May;158:106872. doi: 10.1016/j.compbiomed.2023.106872. Epub 2023 Apr 4.