Establishment and Evaluation of Exosomes-Related Gene Risk Model in Hepatocellular Carcinoma

被引:0
作者
Lin Zhu
Yan Lou
Qiyu Xiao
Ling Wang
Guodong Chen
Wenjun Yang
Tengjiao Wang
机构
[1] Ningxia Medical University,Key Laboratory of Fertility Preservation and Maintenance, The School of Basic Medicine, The General Hospital
[2] Naval Military Medical University,Department of Orthopedic Oncology, Spine Tumor Center, Changzheng Hospital
[3] Central South University,Department of Nuclear Medicine, Hunan Cancer Hospital/The Affiliated Cancer Hospital of Xiangya School of Medicine
[4] Naval Medical University,Department of Stem Cells and Regenerative Medicine, Center for Translational Medicine
[5] Shanghai Key Laboratory of Cell Engineering,Department of Emergency
[6] Shanghai Institute of Stem Cell Research and Clinical Translation,Department of Precision Medicine, Translational Medicine Research Center
[7] The Sixth Medical Center of PLA General Hospital,undefined
[8] Naval Medical University,undefined
来源
Biochemical Genetics | 2024年 / 62卷
关键词
Hepatocellular carcinoma; Prognosis; Gene set enrichment analysis; Exosomes; Risk model;
D O I
暂无
中图分类号
学科分类号
摘要
Hepatocellular carcinoma (HCC) is a challenging disease to evaluate in terms of prognosis, requiring close attention to the prognosis of HCC patients. Exosomes have been shown to play an important role in HCC development and have significant potential in managing HCC patient prognosis, as they are detectable in patients’ blood. By using small extracellular vesicular RNA, liquid biopsies can reflect the underlying physiological and pathological status of the originating cells, providing a valuable assessment of human health. No study has explored the diagnostic value of mRNA expression changes in exosomes for liver cancer. The present study investigated establishing a risk prognosis model based on mRNA expression levels in exosomes from blood samples of liver cancer patients and evaluated its diagnostic and prognostic value, providing new targets for liver cancer detection. We obtained mRNA data from HCC patients and normal controls from the TCGA and exoRBase 2.0 databases and established a risk prognostic assessment model using exosomes-related risk genes selected through prognostic analysis and Lasso Cox analysis. The patients were divided into high-risk and low-risk groups based on median risk score values to validate the independence and evaluability of the risk score. The clinical value of the model was further analyzed using a nomograph model, and the efficacy of immunotherapy and cell-origin types of prognostic risk genes were further assessed in the high- and low-risk groups by immune checkpoint and single-cell sequencing. A total of 44 genes were found to be significantly associated with the prognosis of HCC patients. From this group, we selected six genes (CLEC3B, CYP2C9, GNA14, NQO1, NT5DC2, and S100A9) as exosomal risk genes and used them as a basis for the risk prognosis model. The clinical information of HCC patients from the TCGA and ICGC databases demonstrated that the risk prognostic score of the model established in this study was an independent prognostic factor with good robustness. When pathological stage and risk prognostic score were incorporated into the model to predict clinical outcomes, the nomograph model had the best clinical benefit. Furthermore, immune checkpoint assays and single-cell sequencing analysis suggested that exosomal risk genes were derived from different cell types and that immunotherapy in the high-risk groups could be beneficial. Our study demonstrated that the prognostic scoring model based on exosomal mRNA was highly effective. The six genes selected using the scoring model have been previously reported to be associated with the occurrence and development of liver cancer. However, this study is the first to confirm that these related genes existed in the blood exosomes, which could be used for liquid biopsy of patients with liver cancer, thereby avoiding the need for puncture diagnosis. This approach has a high value in clinical application. Through single-cell sequencing, we found that the six genes in the risk model originate from multiple cell types. This finding suggests that the exosomal characteristic molecules secreted by different types of cells in the microenvironment of liver cancer may serve as diagnostic markers.
引用
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页码:698 / 717
页数:19
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