新技術使耐藥菌對“最後手段”抗生素重新敏感

加入我們的科學愛好者社群!


關於支援科學新聞業

如果您喜歡這篇文章,請考慮透過以下方式支援我們屢獲殊榮的新聞報道: 訂閱。 透過購買訂閱,您將有助於確保未來能夠繼續報道關於發現和塑造我們當今世界的想法的具有影響力的故事。


在過去十年中,葡萄球菌屬細菌菌株對幾乎所有抗生素的耐藥性都日益增強。 大多數菌株仍然對“最後手段”藥物萬古黴素有效。但是,相關的萬古黴素耐藥菌病例正在增加,導致人們越來越擔心普遍存在的金黃色葡萄球菌會產生這種耐藥性,並在醫院和其他地方造成嚴重破壞。為此,發表在最新一期《科學》雜誌上的研究可能為對抗這些新出現的超級細菌帶來新的希望。根據該報告,研究人員開發了一種技術,可以使萬古黴素耐藥菌對該抗生素重新敏感。

萬古黴素的作用機制是透過結合細菌細胞壁並干擾細胞壁的生長。然而,耐藥菌的細胞壁化學成分發生了改變,從而阻止了萬古黴素與其結合。為了解決這個問題,哥倫比亞大學的加布裡埃拉·基奧西斯 (Gabriela Chiosis) 和洛克菲勒大學的伊沃·G·博內卡 (Ivo G. Boneca) 設計了一種名為 SProC5 的小分子,它可以裂解化學改變的細胞壁成分,從而恢復細菌對萬古黴素的脆弱性。研究小組發現,在小鼠體內,將耐藥糞腸球菌(葡萄球菌的近親)暴露於萬古黴素和 SProC5 的組合中,可以有效地對抗細菌。

這種方法是否對人類有效還有待觀察。但作者總結說,到目前為止,使用能夠裂解耐藥菌改變的細胞壁成分的分子來恢復萬古黴素的敏感性,“是一種有前景的策略。”

Kate Wong is an award-winning science writer and senior editor at 大眾科學 focused on evolution, ecology, anthropology, archaeology, paleontology and animal behavior. She is fascinated by human origins, which she has covered for more than 25 years. Recently she has become obsessed with birds. Her reporting has taken her to caves in France and Croatia that Neandertals once called home, to the shores of Kenya's Lake Turkana in search of the oldest stone tools in the world, to Madagascar on an expedition to unearth ancient mammals and dinosaurs, to the icy waters of Antarctica, where humpback whales feast on krill, and on a "Big Day" race around the state of Connecticut to find as many bird species as possible in 24 hours. Kate is co-author, with Donald Johanson, of Lucy's Legacy: The Quest for Human Origins. She holds a bachelor of science degree in biological anthropology and zoology from the University of Michigan. Follow Wong on X (formerly Twitter) @katewong

More by Kate Wong
© .