E-cadherin Gene (CDH1) Expression in Low Grade Astrocytoma

Area of Science:

• Neuro-oncology
• Molecular Biology
• Cancer Genetics

Background:

• Astrocytomas are common primary brain tumors known for invasiveness and high mortality.
• Downregulation of E-cadherin (CDH1), a cell adhesion molecule, is linked to tumor invasion and metastasis in various cancers.

Purpose of the Study:

• To investigate the gene expression level of E-cadherin (CDH1) in low-grade astrocytoma.
• To correlate E-cadherin expression with tumor grade in astrocytoma.

Main Methods:

• Analysis of 22 low-grade astrocytoma tissues (WHO Grade I and II) and control brain tissues.
• Histological examination using Hematoxylin and Eosin (H&E) staining.
• Quantitative assessment of CDH1 gene expression via real-time polymerase chain reaction (RT-PCR) and comparative Ct method.

Main Results:

• All astrocytoma cases exhibited downregulation of CDH1 gene expression compared to control tissues.
• A statistically significant reduction (p=0.019) in E-cadherin expression was observed.
• WHO Grade II astrocytomas showed greater CDH1 downregulation than WHO Grade I tumors.

Conclusions:

• E-cadherin (CDH1) gene downregulation is a characteristic feature of low-grade astrocytoma.
• The degree of E-cadherin downregulation correlates with astrocytoma tumor grade, suggesting its role in tumor progression.