Related Experiment Video
Updated: Nov 24, 2025
A Next-generation Tissue Microarray ngTMA Protocol for Biomarker Studies
Published on: September 23, 2014
[Analysis of Gene Variation in Thymoma by Microarray]
Lijun Wang1, Lei Yu2, Xin Du2
1Civil Aviation General Hospital, Beijing 100123, China.
Background:
Thymoma is the most common malignant tumor in anterior mediastinum, and its specific pathogenesis is still unclear. This limits the study of targeted drugs for thymoma. The aim of the study is to investigate the genes and signal pathways of thymoma, and provide help for the research of thymic tumor pathogenesis using the technology of second-generation genechip to analyze thymoma.
Methods:
From January 2015 to December 2017, we analyzed 31 cases of thymoma by CapitaBio mRNA expression profile genechip technology, and then confirmed the genes by reverse transcription-polymerase chain reaction (RT-PCR).
Results:
We found some genes with different expression levels between thymoma and surrounding thymus tissue. Among them, six driving genes (FANCI, CAPD3, NCAPG, OXCT1, EPHA1 and MCM2) were significantly abnormal in thymoma. Some specific genes affected by copy-number variation were detected: E2F2, EphA1, CCL25 and MCM2 were significantly up-regulated, while IL-6, CD36, FABP4, SH2D1A and MYOC genes were significantly down-regulated. KEGG database analysis showed that the expression of 10 signaling pathway genes was generally up-regulated or down-regulated, such as systemic lupus erythematosus, viral oncogenes, primary immunodeficiency, cell cycle genes and p53 signaling pathway, which may be related to occurrence of thymoma.
Conclusions:
We found a variety of genes abnormally expressed in thymoma, which will provide reference for the study of pathogenesis and biomarkers of thymoma in the future.
Insights
This study identifies abnormal gene expression in thymoma, revealing key driving genes and altered signaling pathways. These findings offer insights into thymoma pathogenesis and potential therapeutic targets.
Area of Science:
- Oncology
- Molecular Biology
- Genetics
Background:
- Thymoma is the most common anterior mediastinal malignancy.
- Its pathogenesis remains poorly understood, hindering targeted drug development.
Purpose of the Study:
- To investigate gene and signal pathway alterations in thymoma.
- To utilize second-generation genechip technology for thymoma research.
Main Methods:
- Analyzed 31 thymoma cases using CapitaBio mRNA expression profile genechip.
- Confirmed gene expression changes with reverse transcription-polymerase chain reaction (RT-PCR).
Main Results:
- Identified significantly abnormal expression of six driving genes (FANCI, CAPD3, NCAPG, OXCT1, EPHA1, MCM2) in thymoma.
- Detected copy-number variations with up-regulated genes (E2F2, EphA1, CCL25, MCM2) and down-regulated genes (IL-6, CD36, FABP4, SH2D1A, MYOC).
- KEGG analysis indicated altered signaling pathways, including cell cycle and p53 pathways, potentially linked to thymoma development.
Conclusions:
- Identified numerous abnormally expressed genes in thymoma.
- These findings provide a foundation for future research into thymoma pathogenesis and biomarker discovery.
