相关实验视频

Updated: May 30, 2025

Nanomechanics of Drug-target Interactions and Antibacterial Resistance Detection

Nanomechanics of Drug-target Interactions and Antibacterial Resistance Detection

Published on: October 25, 2013

一种佐沙基尿素抑制了VraS,并增强了对抗万科中间耐药性黄金葡萄球菌的抗微生物药物

Emerson P Heckler¹, Liaqat Ali², Shrijan Bhattarai²

¹Department of Basic Pharmaceutical Sciences, Fred Wilson School of Pharmacy, High Point University, High Point, NC, USA.

Bioorganic & medicinal chemistry letters

|January 29, 2025

概括

一种新型的佐沙基尿素化合物直接抑制VraS,VraS是抗万科中间体耐药黄金葡萄球菌 (VISA) 的关键因素. 这种抑制显著增强了万科米辛和西林对VISA和MRSA菌株的疗效.

科学领域:

微生物学微生物学
分子生物学分子生物学
药用化学医学化学

背景情况:

由于治疗选择有限,耐万科中间体黄金葡萄球菌 (VISA) 构成重大威胁.
弗拉斯基因酶在介导VISA表型方面发挥着至关重要的作用.
准VraS是一种潜在的策略,可以克服万科米辛耐药性.

研究的目的:

确定和描述一种新的VraS.抑制剂.
评估这种抑制剂与抗生素对抗抗性黄金葡萄球菌菌株的协同作用.
阐明VraS抑制的机制及其对抗生素疗效的影响.

主要方法:

使用生物化学测试对VraS抑制剂进行查.
测试已识别的化合物 (化学物质1) 与万科米辛和西林结合对VISA和MRSA菌株的疗效.
评估化学物质1对VraS ATPase活性和真基因表达的影响.
使用分子建模来研究化学物质的结合机制 1.

主要成果:

一种佐醇尿素 (化学物质1) 被确定为直接的VraS抑制剂.
化学1增强了万科米辛16倍和西林32倍,对抗原型VISA菌株Mu50.0.
该化合物显示出对几种MRSA菌株的氧素增强有前途.
化学物质1约30%抑制了VraS ATPase活性,并降低了真基因自高调节.

结论:

化学物质1直接抑制VraS,阻止正常的VraOperon功能.
这种抑制导致针对VISA和MRSA的细胞壁导向抗生素的强烈增强.
这项研究报告了第一个直接的VraS抑制剂,显示了对VISA的显著增强.

关键词:

增强抗微生物的增强剂.氧沙林 (Oxacillin) 是一种一种电阻电阻电阻电阻电阻电阻黄金葡萄球菌黄金葡萄球菌范科米辛是一种药物.这是一个真正的问题.

更多相关视频

Targeting Biofilm Associated Staphylococcus aureus Using Resazurin Based Drug-susceptibility Assay

Targeting Biofilm Associated Staphylococcus aureus Using Resazurin Based Drug-susceptibility Assay

Published on: May 5, 2016

Improved Enzyme Protection Assay to Study Staphylococcus aureus Internalization and Intracellular Efficacy of Antimicrobial Compounds

Improved Enzyme Protection Assay to Study Staphylococcus aureus Internalization and Intracellular Efficacy of Antimicrobial Compounds

Published on: September 8, 2021

相关概念视频

Combined Effects of Drugs: Synergism

Combined Effects of Drugs: Synergism

Synergism is a useful mechanism where combining two or more drugs is more effective than each constituent used alone. Such combinations are also called supra-additive interactions. The drugs collectively enhance the final therapeutic effect by acting on different targets. Another advantage is that the low dose of each constituent drug is sufficient to achieve the desired effect. This helps reduce the duration of therapy and lower the adverse effects of these drugs.
Such synergistic combinations...

Surface Membrane Barriers

Surface Membrane Barriers

The skin and mucous membranes serve as the primary line of defense against pathogens by providing both physical and chemical protection. These barriers are essential in preventing the entry and establishment of microbes, thereby maintaining the integrity of the host.
The outer layer of the skin, the epidermis, is a robust barrier comprising layers of closely packed keratinized cells. This dense arrangement prevents microbes from penetrating the body. The periodic shedding of epidermal cells...

Antiepileptic Drugs: Modulators of Neurotransmitter Release Mediated by SV2A Protein

Antiepileptic Drugs: Modulators of Neurotransmitter Release Mediated by SV2A Protein

Antiepileptic drugs, such as levetiracetam (Keppra) and brivaracetam (Briviact), have emerged as crucial tools in managing epilepsy. These medications exert their therapeutic effects by targeting the synaptic vesicle protein SV2A, a transmembrane glycoprotein primarily found in the brain.
SV2A is a transmembrane glycoprotein located predominantly in the brain, modulating the release of neurotransmitters for neuronal communication. Both levetiracetam and brivaracetam exhibit a high affinity for...

Cholinergic Antagonists: Pharmacokinetics

Cholinergic Antagonists: Pharmacokinetics

Cholinergic antagonists—such as antimuscarinics—are available in oral, topical, ocular, parenteral, and inhalational formulations. Most antimuscarinics are oral formulations, while scopolamine is available as a topical patch, and ipratropium and tiotropium are available as inhalation aerosols or powders. Atropine, tropicamide, and cyclopentolate are topically instilled in the eye. Most antimuscarinics are lipid-soluble and readily absorbed from the gastrointestinal tract and...

Antihypertensive Drugs: Vasodilators

Antihypertensive Drugs: Vasodilators

Vasodilators, primarily affecting the smooth muscles within arterial and venous walls, are commonly used for hypertension treatment. Medications such as minoxidil and hydralazine primarily target arteries and arterioles, while sodium nitroprusside acts on arterioles and venules. Minoxidil, functioning as a prodrug, is metabolized by hepatic sulfotransferase into its active form, minoxidil sulfate, after oral administration. This metabolite binds to the sulfonylurea receptor (SUR) component of...