A necroptosis related prognostic model of pancreatic cancer based on single cell sequencing analysis and transcriptome analysis

被引:19
|
作者
Chen, Liang [1 ]
Zhang, Xueming [1 ]
Zhang, Qixiang [2 ]
Zhang, Tao [3 ]
Xie, Jiaheng [4 ]
Wei, Wei [5 ]
Wang, Ying [6 ]
Yu, Hongzhu [3 ]
Zhou, Hongkun [1 ]
机构
[1] Jiaxing Univ, Affiliated Hosp, Hosp Jiaxing 1, Convers Therapy Ctr Hepatobiliary & Pancreat Tumor, Jiaxing, Zhejiang, Peoples R China
[2] Nanjing Med Univ, Affiliated Hosp 1, Dept Neurosurg, Nanjing, Peoples R China
[3] Anhui Med Univ, Fuyang Hosp, Dept Gen Surg, Fuyang, Peoples R China
[4] Nanjing Med Univ, Affiliated Hosp 1, Dept Burn & Plast Surg, Nanjing, Peoples R China
[5] Jiaxing First Hosp, Dept Anesthesiol, Jiaxing, Peoples R China
[6] Nanjing Med Univ, Childrens Hosp, Dept Neurosurg, Nanjing, Peoples R China
来源
FRONTIERS IN IMMUNOLOGY | 2022年 / 13卷
关键词
pancreatic cancer; necroptosis; programmed cell death; prognostic model; single-cell sequencing analysis; bioinformatics; IMMUNOTHERAPY; DIAGNOSIS;
D O I
10.3389/fimmu.2022.1022420
中图分类号
R392 [医学免疫学]; Q939.91 [免疫学];
学科分类号
100102 ;
摘要
Background: As a tumor type with high mortality and poor therapeutic effect, the pathogenesis of pancreatic cancer is still unclear. It is necessary to explore the significance of necroptosis in pancreatic cancer. Methods: Pancreatic cancer transcriptome data were obtained from the TCGA database, ICGC database, and GSE85916 in the GEO database. The TCGA cohort was set as a training cohort, while the ICGC and GSE85916 cohort were set as the validation cohorts. Single-cell sequencing data of pancreatic cancer were obtained from GSE154778 in the GEO database. The genes most associated with necroptosis were identified by weighted co-expression network analysis and single-cell sequencing analysis. COX regression and Lasso regression were performed for these genes, and the prognostic model was established. By calculating risk scores, pancreatic cancer patients could be divided into NCPTS_high and NCPTS_low groups, and survival analysis, immune infiltration analysis, and mutation analysis between groups were performed. Cell experiments including gene knockdown, CCK-8 assay, clone formation assay, transwell assay and wound healing assay were conducted to explore the role of the key gene EPS8 in pancreatic cancer. PCR assays on clinical samples were further used to verify EPS8 expression. Results: We constructed the necroptosis-related signature in pancreatic cancer using single-cell sequencing analysis and transcriptome analysis. The calculation formula of risk score was as follows: NCPTS = POLR3GL * (-0.404) + COL17A1 * (0.092) + DDIT4 * (0.007) + PDE4C * (0.057) + CLDN1* 0.075 + HMGA2 * 0.056 + CENPF * 0.198 +EPS8 * 0.219. Through this signature, pancreatic cancer patients with different cohorts can be divided into NCPTS_high and NCPTS_low group, and the NCPTS_high group has a significantly poorer prognosis. Moreover, there were significant differences in immune infiltration level and mutation level between the two groups. Cell assays showed that in CAPAN-1 and PANC-1 cell lines, EPS8 knockdown significantly reduced the viability, clonogenesis, migration and invasion of pancreatic cancer cells. Clinical PCR assay of EPS8 expression showed that EPS8 expression was significantly up-regulated in pancreatic cancer (*P<0.05). Conclusion: Our study can provide a reference for the diagnosis, treatment and prognosis assessment of pancreatic cancer.
引用
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页数:17
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