Mechanism of Action
This page provides an overview of the evidence on a potential biological mechanism by which aspirin may affect PI3K-altered colorectal cancer. The precise mechanism of action has not been established.
Aspirin is not FDA-approved for the treatment of colorectal cancer. This page is intended for informational purposes only and is not intended to provide medical advice and should not be relied upon in that regard. Clinicians should make individual prescribing decisions for their patients based on the patient’s clinical presentation and the clinician’s own medical decision-making.
The role of aspirin in PI3K-altered colorectal cancer
Aspirin irreversibly inhibits cyclooxygenase enzymes (COX-1 and COX-2) that are involved in inflammation and regulating homeostatic functions.1-3 Interactions with the PI3K/AKT pathway, which helps regulate cell growth, proliferation, survival, and metabolism, may drive the response to aspirin in patients with PI3K-altered colorectal cancer.4,5 Further research is needed to clarify the biological mechanism underlying the response to aspirin in PI3K-altered colorectal cancer.6
Additional proposed mechanisms of aspirin’s activity in cancer include:
Platelet inhibition via thromboxane A22,6,7
Interactions with the ARHGEF1 gene6
Interactions with RNA2,8
Aspirin-triggered specialized pro-resolving mediators2
References:
1. StatPearls Publishing. Aspirin. StatPearls. Updated July 3, 2023. Accessed March 16, 2026. https://www.ncbi.nlm.nih.gov/books/NBK549795 2. Hall DCN, Benndorf RA. Cell Mol Life Sci. 2022;79(7):393. 3. Adelizzi RA. J Am Osteopath Assoc. 1999;99(11 Suppl):S7–12. 4. He Y, et al. Signal Transduct Target Ther. 2021;6(1):425. 5. Wang H, et al. Front Oncol. 2024;14:1290921. 6. Langley RE, Burn J. N Engl J Med. 2025;393(23):2368–71. 7. Patrono C, et al. Pharmacol Rev. 2026;78(1):100109. 8. Chen M, et al. Transl Cancer Res. 2021;10(5):2055–69.
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