Identification of Senescence-Related Subtypes, the Development of a Prognosis Model, and Characterization of Immune Infiltration and Gut Microbiota in Colorectal Cancer

Frontiers in Medicine

Le-Chi Ye¹  Wei Cen¹  Yi-Fei Pan¹  Ju-Ji Dai¹  Xi-Han Chen²  Xi-Qiang Zhong³  Mao-Fei Ye⁴  Yang-Yang Fu⁵ 

[1] Department of Colorectal and Anal Surgery, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, China;Department of Gastroenterology, The People's Hospital of Pingyang, Wenzhou, China;Department of Spinal Surgery, The Third Affiliated Hospital of Wenzhou Medical University, Wenzhou, China;Department of Urology, Shanghai Baoshan Luodian Hospital, Shanghai, China;Division of Pulmonary Medicine, Key Laboratory of Heart and Lung, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, China;

关键词: colorectal cancer;    senescence;    tumor microenvironment;    gut microbiota;    prognosis;   

DOI  :  10.3389/fmed.2022.916565

来源: DOAJ

【 摘 要 】

Cellular senescence is associated with tumorigenesis, and the subtype and prognostic signatures of senescence-related genes (SRGs) in the tumor microenvironment (TME) and gut microbiota have not been fully determined. Analysis of 91 SRGs obtained from the GSEA and MSigDB, and mRNA sequencing of genes in the Gene Expression Omnibus (GEO) and The Cancer Genome Atlas (TCGA) databases enabled the identification of two distinct molecular types of colorectal cancer (CRC). Patient samples were clustered into two subtypes, with Kaplan-Meier survival analyses showing significant differences in patient survival between the two subtypes. Cluster C2 was associated with patient clinicopathological features, high immune score, high abundance of immune infiltrating cells and somewhat high abundance of bacteria. A risk model based on eight SRGs showed that a low risk score was characterized by inhibition of immune activity and was indicative of better prognosis in patients with CRC. In combination with clinical characteristics, risk score was found to be an independent prognostic predictor of survival in patients with CRC. In conclusion, the present study showed that senescence-related subtypes and a signature consisting of eight SRGs were associated with CRC patient prognosis, as well as with immune cell infiltration and gut microbiota. These findings may enable better prediction of CRC patient prognosis and facilitate individualized treatments.

【 授权许可】

Unknown