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Updated: Jun 22, 2026

Development and Maintenance of a Preclinical Patient Derived Tumor Xenograft Model for the Investigation of Novel Anti-Cancer Therapies
Published on: September 30, 2016
NSAIDs and cancer prevention: targets downstream of COX-2
1Department of Medicine, Cell and Developmental Biology and Cancer Biology, Vanderbilt University Medical Center, Nashville, Tennessee 37232-6838, USA.
Abstract:
Preclinical and clinical studies have clearly shown a benefit of nonsteroidal anti-inflammatory drug (NSAID) use in reducing cancer risk. However, the adverse gastrointestinal and cardiovascular side effects associated with NSAIDs and COX-2 selective inhibitors (coxibs) have provoked more scrutiny of the precise role of specific downstream mediators in the prostaglandin (PG) signaling cascade. NSAIDs and coxibs inhibit PG biosynthesis. One of the PGs produced at high levels in the tumor microenvironment is PGE(2), which is thought to play a major role in cancer progression. Thus, a better understanding of PGE(2) signaling could enable identification of novel and safer therapeutic targets downstream of the cyclooxygenase enzymes. We review the emerging molecular mechanisms by which COX-2-derived PGE(2) is involved in cancer progression and delineate potential opportunities for development of novel pharmacologic approaches utilizing this pathway.
Insights
Nonsteroidal anti-inflammatory drugs (NSAIDs) show cancer risk reduction benefits. Further research into prostaglandin E2 (PGE2) signaling offers safer therapeutic targets beyond NSAIDs and coxibs.
Area of Science:
- Oncology
- Pharmacology
- Molecular Biology
Background:
- Nonsteroidal anti-inflammatory drugs (NSAIDs) and COX-2 inhibitors (coxibs) reduce cancer risk.
- Adverse effects of NSAIDs and coxibs necessitate exploring alternative therapeutic targets.
- Prostaglandin E2 (PGE2) is implicated in tumor microenvironment progression.
Purpose of the Study:
- To review molecular mechanisms of COX-2-derived PGE2 in cancer progression.
- To identify novel therapeutic targets within the PGE2 signaling pathway.
- To explore new pharmacologic strategies beyond traditional NSAIDs and coxibs.
Main Methods:
- Literature review of preclinical and clinical studies.
- Analysis of prostaglandin (PG) signaling cascade.
- Examination of COX-2 enzyme activity and downstream mediators.
Main Results:
- NSAIDs and coxibs inhibit prostaglandin biosynthesis.
- PGE2 is highly expressed in the tumor microenvironment.
- PGE2 signaling plays a significant role in cancer progression.
Conclusions:
- Understanding PGE2 signaling is crucial for developing novel cancer therapeutics.
- Targeting downstream mediators of COX-2-derived PGE2 may offer safer treatment options.
- Further research can lead to innovative pharmacologic approaches for cancer treatment.
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