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基于单层WX(X = S,Se)作为抗结核药物有效给药载体的第一性原理计算。

First-principles calculations on monolayer WX (X = S, Se) as an effective drug delivery carrier for anti-tuberculosis drugs.

作者信息

Mahmud Khaled, Yashir Taki, Zubair Ahmed

机构信息

Department of Electrical and Electronic Engineering, Bangladesh University of Engineering and Technology Dhaka 1205 Bangladesh

出版信息

Nanoscale Adv. 2024 Mar 25;6(9):2447-2458. doi: 10.1039/d3na01095c. eCollection 2024 Apr 30.

Abstract

Tuberculosis (TB) remains a major global health concern, necessitating the exploration of novel drug delivery systems to combat the challenges posed by conventional approaches. We investigated the potential of monolayer transition metal dichalcogenides (TMDs) as an innovative platform for efficient and targeted delivery of antituberculosis drugs. Specifically, the electronic and optical properties of prominent TB drugs, isoniazid (INH) and pyrazinamide (PZA), adsorbed on tungsten diselenide (WSe) and tungsten disulfide (WS) monolayers were studied using first-principles calculations based on density functional theory (DFT). The investigation revealed that the band gaps of WSe and WS monolayers remain unaltered upon adsorption of PZA or INH, with negative adsorption energy indicating stable physisorption. We explored different vertical and horizontal configurations, and the horizontal ones were more stable. When INH and PZA drugs were horizontally adsorbed together on WSe, the most stable configuration was found with an adsorption energy of -2.35 eV. Moreover, the adsorbed drugs could be readily released by light within the visible or near-infrared (NIR) wavelength range. This opened up possibilities for their potential application in photothermal therapy, harnessing the unique properties of these 2D materials. The comprehensive analysis of the band structures and density of states provides valuable insights into how the drug molecules contributed to the conduction and valence bands. The optical responses of anti-TB drugs adsorbed in 2D WSe and WS were similar to those of pristine 2D WSe and WS. We demonstrated the temperature-dependent release mechanism of our 2D WSe and WS drug complexes, confirming the feasibility of releasing the discussed anti-tuberculosis drugs by generating heat through photothermal therapy. These findings hold significant promise for developing innovative drug delivery systems that have enhanced efficacy for targeted and low-toxic TB treatment.

摘要

结核病(TB)仍然是全球主要的健康问题,因此需要探索新型药物递送系统来应对传统方法带来的挑战。我们研究了单层过渡金属二硫属化物(TMDs)作为高效靶向递送抗结核药物的创新平台的潜力。具体而言,基于密度泛函理论(DFT)的第一性原理计算研究了吸附在二硒化钨(WSe)和二硫化钨(WS)单层上的主要抗结核药物异烟肼(INH)和吡嗪酰胺(PZA)的电子和光学性质。研究表明,吸附PZA或INH后,WSe和WS单层的带隙保持不变,负吸附能表明存在稳定的物理吸附。我们探索了不同的垂直和水平构型,发现水平构型更稳定。当INH和PZA药物在WSe上水平共吸附时,发现最稳定的构型,吸附能为-2.35 eV。此外,吸附的药物可以在可见光或近红外(NIR)波长范围内通过光轻松释放。这为利用这些二维材料的独特性质将其应用于光热疗法开辟了可能性。对能带结构和态密度的综合分析为药物分子如何对导带和价带做出贡献提供了有价值的见解。吸附在二维WSe和WS中的抗结核药物的光学响应与原始二维WSe和WS的光学响应相似。我们展示了二维WSe和WS药物复合物的温度依赖性释放机制,证实了通过光热疗法产生热量来释放所讨论的抗结核药物的可行性。这些发现对于开发创新的药物递送系统具有重大前景,该系统在靶向和低毒结核病治疗方面具有更高的疗效。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/6d3e/11059492/a8e5c869c38b/d3na01095c-f1.jpg

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