4.4 Article

Differential analysis revealing APOC1 to be a diagnostic and prognostic marker for liver metastases of colorectal cancer

期刊

WORLD JOURNAL OF CLINICAL CASES
卷 9, 期 16, 页码 3880-3894

出版社

BAISHIDENG PUBLISHING GROUP INC
DOI: 10.12998/wjcc.v9.i16.3880

关键词

APOC1; Liver metastases; Colorectal cancer; Differentially expressed genes; Marker

资金

  1. National Key Research and Development (R&D) Program Project [2019YFC1315705]

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APOC1 has been identified as a biomarker that plays a significant role in the diagnosis and prognosis of liver metastases in CRC, showing potential as a valuable target for further research and clinical applications.
BACKGROUND Colorectal cancer (CRC) is one of the most malignant gastrointestinal cancers worldwide. The liver is the most important metastatic target organ, and liver metastasis is the leading cause of death in patients with CRC. Owing to the lack of sensitive biomarkers and unclear molecular mechanism, the occurrence of liver metastases cannot be predicted and the clinical outcomes are bad for liver metastases. Therefore, it is very important to identify the diagnostic or prognostic markers for liver metastases of CRC. AIM To investigate the highly differentially expressed genes (HDEGs) and prognostic marker for liver metastases of CRC. METHODS Data from three NCBI Gene Expression Omnibus (GEO) datasets were used to show HDEGs between liver metastases of CRC and tumour or normal samples. These significantly HDEGs of the three GEO datasets take the interactions. And these genes were screened through an online tool to explore the prognostic value. Then, TIMER and R package were utilized to investigate the immunity functions of the HDEGs and gene set enrichment analysis was used to explore their potential functions. RESULTS Based on the selection criteria, three CRC datasets for exploration (GSE14297, GSE41258, and GSE49355) were chosen. Venn diagrams were used to show HDEGs common to the six groups and 47 HDEGs were obtained. The HDEGs were shown by using STRING and Cytoscape software. Based on the TCGA database, APOC1 showed significantly different expression between N2 and N0, and N2 and N1. And there was also a significant difference in expression between T2 and T4, and between T2 and T3. In 20 paired CRC and normal tissues, quantitative real-time polymerase chain reaction illustrated that the APOC1 mRNA was strongly upregulated in CRC tissues (P = 0.014). PrognoScan and GEPIA2 revealed the prognostic value of APOC1 for overall survival and disease-free survival in CRC (P < 0.05). TIMER showed that APOC1 has a close relationship with immune infiltration (P < 0.05). CONCLUSION APOC1 is a biomarker that is associated with both the diagnosis and prognosis of liver metastases of CRC.

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