Elucidating immunological characteristics of the adenoma-carcinoma sequence in colorectal cancer patients in South Korea using a bioinformatics approach
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초록

Colorectal cancer (CRC) is one of the top five most common and life-threatening malignancies worldwide. Most CRC develops from advanced colorectal adenoma (ACA), a precancerous stage, through the adenoma-carcinoma sequence. However, its underlying mechanisms, including how the tumor microenvironment changes, remain elusive. Therefore, we conducted an integrative analysis comparing RNA-seq data collected from 40 ACA patients who visited Dongguk University Ilsan Hospital with normal adjacent colons and tumor samples from 18 CRC patients collected from a public database. Differential expression analysis identified 21 and 79 sequentially up- or down-regulated genes across the continuum, respectively. The functional centrality of the continuum genes was assessed through network analysis, identifying 11 up- and 13 down-regulated hub-genes. Subsequently, we validated the prognostic effects of hub-genes using the Kaplan–Meier survival analysis. To estimate the immunological transition of the adenoma-carcinoma sequence, single-cell deconvolution and immune repertoire analyses were conducted. Significant composition changes for innate immunity cells and decreased plasma B-cells with immunoglobulin diversity were observed, along with distinctive immunoglobulin recombination patterns. Taken together, we believe our findings suggest underlying transcriptional and immunological changes during the adenoma-carcinoma sequence, contributing to the further development of pre-diagnostic markers for CRC. © The Author(s) 2024.

키워드

Adenoma-carcinoma sequenceAdvanced colorectal adenomaColorectal cancerImmune repertoireTUMOR-INFILTRATING LYMPHOCYTESREACTIVE OXYGENT-CELLSEXPRESSIONMUCOSA
제목
Elucidating immunological characteristics of the adenoma-carcinoma sequence in colorectal cancer patients in South Korea using a bioinformatics approach
저자
Song, J.Kim, D.Jung, J.Choi, E.Lee, Y.Jeong, Y.Lee, B.Lee, S.Shim, Y.Won, Y.Cho, H.Jang, D.K.Kang, H.W.Joo, J.W.J.Jang, W.
DOI
10.1038/s41598-024-56078-2
발행일
2024-05
유형
Article
저널명
Scientific Reports
14
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