Bisphosphonate drugs have actions in the lung and inhibit the mevalonate pathway in alveolar macrophages

Munoz, Marcia A and Fletcher, Emma K and Skinner, Oliver P and Jurczyluk, Julie and Kristianto, Esther and Hodson, Mark P and Sun, Shuting and Ebetino, Frank H and Croucher, David R and Hansbro, Philip M and Center, Jacqueline R and Rogers, Michael J (2021) Bisphosphonate drugs have actions in the lung and inhibit the mevalonate pathway in alveolar macrophages. eLife, 10. ISSN 2050-084X

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Bisphosphonates drugs target the skeleton and are used globally for the treatment of common bone disorders. Nitrogen-containing bisphosphonates act by inhibiting the mevalonate pathway in bone-resorbing osteoclasts but, surprisingly, also appear to reduce the risk of death from pneumonia. We overturn the long-held belief that these drugs act only in the skeleton and show that a fluorescently labelled bisphosphonate is internalised by alveolar macrophages and large peritoneal macrophages in vivo. Furthermore, a single dose of a nitrogen-containing bisphosphonate (zoledronic acid) in mice was sufficient to inhibit the mevalonate pathway in tissue-resident macrophages, causing the build-up of a mevalonate metabolite and preventing protein prenylation. Importantly, one dose of bisphosphonate enhanced the immune response to bacterial endotoxin in the lung and increased the level of cytokines and chemokines in bronchoalveolar fluid. These studies suggest that bisphosphonates, as well as preventing bone loss, may boost immune responses to infection in the lung and provide a mechanistic basis to fully examine the potential of bisphosphonates to help combat respiratory infections that cause pneumonia.

Item Type: Article
Subjects: R Medicine > R Medicine (General)
Depositing User: Repository Administrator
Date Deposited: 03 Jun 2022 05:12
Last Modified: 17 Jun 2022 01:02

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