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Updated: Sep 20, 2026
Oncogene Expression Analysis with Alterations in pH in a Pancreatic Ductal Cell Line
Published on: April 11, 2025
[Expression and significance of cyclooxygenase-2 in human pancreatic carcinomas]
1Department of Gastroenterology,The Second Affiliated Hospital, Sun Yat-sen University, Guangzhou, Guangdong, PR China.
Background & Objective:
Nonsteroidal anti-inflammatory drugs (NSAIDs) reduced the incidence of gastrointestinal neoplasms with inhibition of cyclooxygenase-2 (COX-2). This study was designed to investigate the expression and significance of COX-2 and the relationship between COX-2 and bcl-2 in human pancreatic carcinoma.
Methods:
COX-2 and bcl-2 expression was determined with ABC immunohistochemical analysis in the samples of pancreatic carcinoma.
Results:
COX-2 and bcl-2 proteins were found in 22 of 30 (73.3%) and 20 of 30 (66.7%) patients with pancreatic carcinoma, which were higher than those with pancreatic benign disease and normal pancreas,respectively (P< 0.05). There was positive correlation between the expression rates of COX-2 and bcl-2 in pancreatic carcinoma. The correlation coefficient was 0.470 (P< 0.01). There was no significant difference in expression rates of COX-2 in patients among age, sex, tumor location, tumor size, histological degree, and TNM staging (P >0.05).
Conclusion:
COX-2 protein is overexpressed in human pancreatic carcinoma. The co-expression of COX-2 and bcl-2 might play an important role in the regulation of apoptosis of pancreatic carcinoma cells.
Insights
Cyclooxygenase-2 (COX-2) is overexpressed in pancreatic cancer. Its co-expression with bcl-2 may regulate cancer cell apoptosis, offering potential therapeutic targets.
Area of Science:
- Oncology
- Molecular Biology
- Cancer Research
Context:
- Nonsteroidal anti-inflammatory drugs (NSAIDs) targeting cyclooxygenase-2 (COX-2) have shown promise in reducing gastrointestinal neoplasms.
- Understanding the role of COX-2 and its relationship with apoptosis regulators is crucial in pancreatic carcinoma research.
Purpose:
- To investigate the expression levels and significance of COX-2 in human pancreatic carcinoma.
- To explore the correlation between COX-2 and bcl-2 expression in pancreatic cancer.
- To elucidate the potential role of COX-2 and bcl-2 co-expression in pancreatic cancer cell apoptosis.
Summary:
- Cyclooxygenase-2 (COX-2) protein was found to be overexpressed in 73.3% of pancreatic carcinoma samples, significantly higher than in benign or normal pancreatic tissues.
- Bcl-2 protein was also overexpressed in 66.7% of pancreatic carcinoma samples.
- A significant positive correlation (r=0.470, P<0.01) was observed between COX-2 and bcl-2 expression rates in pancreatic carcinoma, independent of clinicopathological factors.
Impact:
- The findings suggest that COX-2 overexpression is a common event in human pancreatic carcinoma.
- The co-expression of COX-2 and bcl-2 may play a critical role in the dysregulation of apoptosis in pancreatic cancer cells.
- This research highlights potential therapeutic strategies targeting COX-2 and bcl-2 pathways for pancreatic cancer treatment.
