ArticlebioRxiv : the preprint server for biology2025
Molecular mechanisms of 10-Butyl Ether Minocycline (BEM), a novel non-antibiotic tetracycline, as a potential treatment for inflammatory and neuroimmune-related disorders.
Article in bioRxiv : the preprint server for biology, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
The pleiotropy of minocycline (MINO), including anti-inflammatory, antioxidant, anti-migratory, anti-MMP, and neuroprotective effects, has been extensively reported. A novel non-antibiotic minocycline derivative, 10-butyl ether minocycline (BEM), was synthesized to retain the pleiotropy of minocycline while minimizing side effects such as antibiotic resistance and gut dysbiosis. Previously, we showed that BEM reduced alcohol consumption in dependent murine and porcine models of Alcohol Use Disorder (AUD). In this study, we investigated the molecular mechanisms of BEM to determine its potential as a therapeutic agent for neuroimmune and inflammatory conditions such as AUD. Here, we report that BEM showed a nearly complete loss of antimicrobial activity against Impact: Our current approach to correlate non-antibacterial actions of BEM to MINOs established mechanistic effects will enable the informed use of BEM for several medical indications including for inflammation and neuroimmune conditions. The focus on BEM's multimodal actions and long-term safety during drug discovery represents a paradigm shift toward complex therapeutic drug development and repositioning, improving upon traditional singular high-affinity target-based approaches. Such new drug discovery attempts could potentially enhance treatment relevance in complex disorders with multiple targets and theoretically guide the creation of second-generation analogs. Significance statement: We report mechanisms of action for BEM, a minocycline analog under evaluation for the treatment of Alcohol Use Disorder, which may also show efficacy for other complex disease processes that involve inflammatory or neuroimmune components. We show that BEM had a nearly complete loss of antimicrobial action, yet retained the pleiotropy of MINO, likely making it a better multimodal therapeutic for long-term treatment of complex diseases with neuroimmune-related components. Visual abstract:
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