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Updated: Aug 12, 2026
Modeling Oral-Esophageal Squamous Cell Carcinoma in 3D Organoids
Published on: December 23, 2022
[Multiple gene alterations in human esophageal squamous cell carcinoma]
1Cancer Institute, Chinese Academy of Medical Sciences, Beijing.
Abstract:
In 45 human esophageal squamous cell carcinomas, 29 showed alterations of EGFr, c-myc, int-2, Rb and p53 gene by Southern blot hybridization, a frequency of 15.6%, 31.1%, 35.6%, 22.2%, 6.7%, respectively. Among these cases, 16 cases showed two or multiple gene changes, and most of them were of II-III stage. The results suggest that gene alterations may be related to pathological stages of the disease. The poorer the differentiation of the tumor, the more gene changes were accumulated. We did not find association between the presence of metastasis in lymph nodes and the gene alterations.
Insights
Gene alterations in esophageal squamous cell carcinoma correlate with tumor stage and differentiation. Poorer differentiation showed more accumulated gene changes, suggesting a link to disease progression.
Area of Science:
- Oncology
- Molecular Biology
- Genetics
Context:
- Esophageal squamous cell carcinoma (ESCC) is a significant global health concern.
- Understanding the molecular underpinnings of ESCC progression is crucial for improved diagnostics and therapeutics.
- Previous research has identified various genetic alterations in cancer, but their specific role in ESCC requires further elucidation.
Purpose:
- To investigate the frequency and spectrum of genetic alterations in key oncogenes and tumor suppressor genes in human ESCC.
- To explore the correlation between these gene alterations and clinicopathological features, including tumor stage and differentiation.
- To determine if lymph node metastasis is associated with specific gene alterations in ESCC.
Summary:
- Southern blot hybridization was used to analyze alterations in Epidermal Growth Factor Receptor (EGFr), c-myc, int-2, Retinoblastoma (Rb), and p53 genes in 45 human ESCC samples.
- Alterations were observed in 29 cases (64.4%), with frequencies of 15.6% for EGFr, 31.1% for c-myc, 35.6% for int-2, 22.2% for Rb, and 6.7% for p53.
- Multiple gene changes were found in 16 cases, predominantly in stages II-III, indicating a relationship between gene alterations and pathological staging. A correlation was noted between poorer tumor differentiation and increased gene alterations. No association was found with lymph node metastasis.
Impact:
- This study highlights the potential role of specific gene alterations in the progression and staging of esophageal squamous cell carcinoma.
- Findings suggest that the accumulation of gene changes is linked to tumor dedifferentiation, providing insights into molecular mechanisms of ESCC development.
- The results may inform future research into targeted therapies and prognostic markers for ESCC based on genetic profiles.
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