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Total Synthesis of Five Lipoteichoic acids of Clostridium difficile

机译:艰难梭菌五种脂蛋白酸的全合成

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The emergence of hypervirulent resistant strains have made Clostridium difficile a notorious nosocomial pathogen and has resulted in a renewed interest in preventive strategies, such as vaccines based on (synthetic) cell wall antigens. Recently, the structure of the lipoteichoic acid (LTA) of this species has been elucidated. Additionally, this LTA was found to induce the formation of protective antibodies against C. difficile in rabbits and mice. The LTA from C. difficile is isolated as a microheterogenous mixture, differing in size and composition, impeding any structure-activity relationship studies. To ensure reliable biological results, pure and well-defined synthetic samples are required. In this work the total synthesis of LTAs from C. difficile with defined chain length is described and the initial biological results are presented.
机译:高毒力抗性菌株的出现使艰难梭菌成为了臭名昭著的医院病原体,并引起了人们对预防策略的新兴趣,例如基于(合成)细胞壁抗原的疫苗。最近,已经阐明了该物种的脂磷壁酸(LTA)的结构。另外,发现该LTA在兔和小鼠中诱导了针对艰难梭菌的保护性抗体的形成。难辨梭状芽孢杆菌的LTA是作为微异质混合物分离的,其大小和组成不同,从而妨碍了任何结构-活性关系研究。为确保获得可靠的生物学结果,需要纯净且定义明确的合成样品。在这项工作中,描述了由艰难梭状芽孢杆菌以限定的链长完全合成LTA的方法,并提出了初步的生物学结果。

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