A novel tumor doubling time-related immune gene signature for prognosis prediction in hepatocellular carcinoma

被引:11
作者
Zhang, Genhao [1 ]
Su, Lisa [2 ,3 ]
Lv, Xianping [1 ]
Yang, Qiankun [1 ]
机构
[1] Zhengzhou Univ, Dept Blood Transfus, Affiliated Hosp 1, Zhengzhou, Peoples R China
[2] Zhengzhou Univ, Dept Genet, Affiliated Hosp 1, Zhengzhou, Peoples R China
[3] Zhengzhou Univ, Prenatal Diag Ctr, Affiliated Hosp 1, Zhengzhou, Peoples R China
关键词
HCC; Prognosis; Immune; Tumor doubling time; CLEC1B; EXPRESSION; CANCER; IDENTIFICATION; PROGRESSION; VALIDATION;
D O I
10.1186/s12935-021-02227-w
中图分类号
R73 [肿瘤学];
学科分类号
100214 ;
摘要
Background Hepatocellular carcinoma (HCC) has become a global health issue of wide concern due to its high prevalence and poor therapeutic efficacy. Both tumor doubling time (TDT) and immune status are closely related to the prognosis of HCC patients. However, the association between TDT-related genes (TDTRGs) and immune-related genes (IRGs) and the value of their combination in predicting the prognosis of HCC patients remains unclear. The current study aimed to discover reliable biomarkers for anticipating the future prognosis of HCC patients based on the relationship between TDTRGs and IRGs. Methods Tumor doubling time-related genes (TDTRGs) were acquired from GSE54236 by using Pearson correlation test and immune-related genes (IRGs) were available from ImmPort. Prognostic TDTRGs and IRGs in TCGA-LIHC dataset were determined to create a prognostic model by the LASSO-Cox regression and stepwise Cox regression analysis. International Cancer Genome Consortium (ICGC) and another cohort of individual clinical samples acted as external validations. Additionally, significant impacts of the signature on HCC immune microenvironment and reaction to immune checkpoint inhibitors were observed. Results Among the 68 overlapping genes identified as TDTRG and IRG, a total of 29 genes had significant prognostic relevance and were further selected by performing a LASSO-Cox regression model based on the minimum value of lambda. Subsequently, a prognostic three-gene signature including HECT domain and ankyrin repeat containing E3 ubiquitin protein ligase 1 (HACE1), C-type lectin domain family 1 member B (CLEC1B), and Collectin sub-family member 12 (COLEC12) was finally identified by stepwise Cox proportional modeling. The signature exhibited superior accuracy in forecasting the survival outcomes of HCC patients in TCGA, ICGC and the independent clinical cohorts. Patients in high-risk subgroup had significantly increased levels of immune checkpoint molecules including PD-L1, CD276, CTLA4, CXCR4, IL1A, PD-L2, TGFB1, OX40 and CD137, and are therefore more sensitive to immune checkpoint inhibitors (ICIs) treatment. Finally, we first found that overexpression of CLEC1B inhibited the proliferation and migration ability of HuH7 cells. Conclusions In summary, the prognostic signature based on TDTRGs and IRGs could effectively help clinicians classify HCC patients for prognosis prediction and individualized immunotherapies.
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页数:15
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