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Bioinformatics Study Revealed Significance of Exosome Transcriptome in Hepatocellular Carcinoma Diagnosis

Zeng-Hong Wu1, Cheng Li2, You-Jing Zhang3

  • 1Division of Gastroenterology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China.

Frontiers in Cell and Developmental Biology
|May 16, 2022
PubMed

Insights

This study identifies novel exosome biomarkers for hepatocellular carcinoma (HCC) prognosis. These findings offer potential therapeutic targets for HCC treatment by analyzing exosome data and gene expression patterns.

Area of Science:

  • Oncology
  • Molecular Biology
  • Biochemistry

Background:

  • Hepatocellular carcinoma (HCC) is a leading cause of cancer mortality globally.
  • Exosomes and competing endogenous RNA (ceRNA) networks are understudied in HCC pathogenesis.
  • Identifying novel biomarkers is crucial for improving HCC diagnosis and treatment.

Purpose of the Study:

  • To explore exosome data for potential biomarkers in HCC.
  • To identify differentially expressed mRNAs, lncRNAs, and circRNAs involved in HCC.
  • To discover exosome-derived biomarkers for HCC therapy and prognostic prediction.

Main Methods:

  • Utilized exoRBase and other online databases for exosome data analysis.
  • Estimated miRNA binding from mRNA, lncRNA, and circRNA interactions.
  • Employed bioinformatics tools like Cytoscape for biomarker identification and KEGG pathway analysis.
  • Validated protein expression using immunohistochemical data from the Human Protein Atlas (HPA).

Main Results:

  • Identified 159 differentially expressed mRNAs, 60 lncRNAs, and 13 circRNAs.
  • Discovered hub biomarkers including MARCH8, SH3PXD2A, has-circ-0014088, hsa-miR-186-5p, and hsa-miR-613.
  • KEGG analysis revealed enrichment in MAPK signaling, cancer metabolism, and spliceosome pathways.
  • Confirmed elevated expression of SMARCA5, CDC42, and UBC in HCC tissues.

Conclusions:

  • Discovered unique exosome signatures for HCC prognostic prediction.
  • Identified potential exosome-based biomarkers for HCC therapy.
  • These biomarkers may reflect exosome microenvironmental alterations in HCC.

Keywords:
circRNAdata miningexoRBaseexosomeshepatocellular carcinoma

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