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Title 

Cationic amphipathic triazines with potent anti-bacterial, anti-inflammatory and anti-atopic dermatitis properties

Authors 

P GunasekaranG RajasekaranE H HanY H ChungY J ChoiY J YangJ E LeeH N KimKiram LeeJin Seok KimHyun-Jun LeeE J ChoiE K KimS Y ShinJ K Bang

Publisher 

Nature Publishing Group

Issue Date 

2019

Citation 

Scientific Reports

Abstract 

The emergence of multi-drug resistant bacteria forces the therapeutic world into a position, where the development of new and alternative kind of antibiotics is highly important. Herein, we report the development of triazine-based amphiphilic small molecular antibacterial agents as mimics of lysine- and arginine-based cationic peptide antibiotics (CPAs). These compounds were screened against a panel of both Gram-positive and Gram-negative bacterial strains. Further, anti-inflammatory evaluation of these compounds led to the identification of four efficient compounds, DG-5, DG-6, DL-5, and DL-6. These compounds displayed significant potency against drug-resistant bacteria, including methicillin-resistant S. aureus (MRSA), multidrug-resistant P. aeruginosa (MDRPA), and vancomycin-resistant E. faecium (VREF). Mechanistic studies, including cytoplasmic membrane depolarization, confocal imaging and flow cytometry suggest that DG-5, DG-6, and DL-5 kill bacteria by targeting bacterial membrane, while DL-6 follows intracellular targeting mechanism. We also demonstrate that these molecules have therapeutic potential by showing the efficiency of DG-5 in preventing the lung inflammation of lipopolysaccharide (LPS)-induced acute lung injury (ALI) mouse model. More interestingly, DL-6 exhibited impressive potency on atopic dermatitis (AD)-like skin lesions in BALB/c mice model by suppressing pro-inflammatory cytokines. Collectively, these results suggest that they can serve a new class of antimicrobial, anti-inflammatory and anti-atopic agents with promising therapeutic potential.

URI 

https://doi.org/10.1038/s41598-018-37785-z

ISSN 

2045-2322

Appears in Collections

1. Journal Articles > Journal Articles

Registered Date

2019-05-02


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