Preprint Article Version 1 Preserved in Portico This version is not peer-reviewed

NSAIDs, from COX Inhibitors to PAF-AH Modulators: Exploring Unconventional Enzymatic Targets for Antitumor Therapy

Version 1 : Received: 26 April 2024 / Approved: 28 April 2024 / Online: 29 April 2024 (03:43:14 CEST)

How to cite: Roggero, A.; Annunciato, I.; Nicodemo, I.; Costa, C. R.; Fernandes, G. A.; Junior, A. B.; Rafael, M.; Oliveira, M. A. D.; Sousa, S. F.; Toyama, M. H. NSAIDs, from COX Inhibitors to PAF-AH Modulators: Exploring Unconventional Enzymatic Targets for Antitumor Therapy. Preprints 2024, 2024041851. https://doi.org/10.20944/preprints202404.1851.v1 Roggero, A.; Annunciato, I.; Nicodemo, I.; Costa, C. R.; Fernandes, G. A.; Junior, A. B.; Rafael, M.; Oliveira, M. A. D.; Sousa, S. F.; Toyama, M. H. NSAIDs, from COX Inhibitors to PAF-AH Modulators: Exploring Unconventional Enzymatic Targets for Antitumor Therapy. Preprints 2024, 2024041851. https://doi.org/10.20944/preprints202404.1851.v1

Abstract

A novel interaction between the enzyme platelet-activating factor acetyl hydrolase (PAF-AH) and certain non-steroidal anti-inflammatory drugs (NSAIDs), such as sulindac, celecoxib, diclofenac and nimesulide, has been uncovered by this in-silico research. PAF-AH is known for its critical role in maintaining the fluidity and functionality of cell membranes by hydrolysing phospholipids and removing oxidized fatty acids. Since tumour microenvironments are largely marked by inflammation and oxidative stress, the discovery that these non-steroidal anti-inflammatory drugs can bind to the active pocket of PAF-AH. Suggests that they may be able to modulate its activity and thereby influence its role in cancer pathogenesis. Such modulation could lead to significant anti-tumour effects, including the reduction of inflammation, the inhibition of angiogenesis and the suppression of metastasis, particularly in cancers of the breast, colon, prostate, and lung. However, in certain con-texts, this interaction may cause the opposite effect, leading to cancer development. Therefore, this study is a gateway for the development of therapeutic strategies based on PAF-AH modulation and highlights the importance of the tumour microenvironment in the assessment of potential effects of NSAIDs. Furthermore, this finding may guide the selection of NSAIDs for the anti-inflammatory treatment of cancer patients, ruling out in-discriminate use of drugs that may promote neoplastic progression. This may also indicate the potential for repositioning specific NSAIDs within cancer treatment, thereby contributing to more precise and personalized therapeutic approaches.

Keywords

platelet-activating factor acetyl hydrolase; non-steroidal anti-inflammatory drugs; cancer

Subject

Medicine and Pharmacology, Complementary and Alternative Medicine

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