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用于促进乳酸杆菌及其他阴道细菌快速生长的实用培养基配方。

Practical media formulations for rapid growth of and other vaginal bacteria.

作者信息

Serrador Daniella, Campbell Jhenielle R, Getz Landon J, Cheung Dorothy, Shefraw Gelila, Kaul Rupert, Navarre William Wiley

机构信息

Department of Molecular Genetics, University of Toronto, Toronto, Ontario, Canada.

Department of Biochemistry, University of Toronto, Toronto, Ontario, Canada.

出版信息

Appl Environ Microbiol. 2025 Jul 8:e0018325. doi: 10.1128/aem.00183-25.

Abstract

The composition of the vaginal microbiome is closely tied to host health. Bacterial vaginosis (BV), caused by the overgrowth of specific anaerobes (e.g., ), is associated with negative health outcomes. A vaginal microbiome dominated by species is thought to protect against BV. However, the role of is controversial, with evidence suggesting that some strains may not protect against BV while others do. To better characterize strains, their interactions with vaginal bacteria and human cells need to be investigated , but this has been impeded by the lack of liquid media that supports rapid growth. We have developed three liquid media formulations for growth: Serrador's -adapted Iscove's medium (SLIM), which supports robust growth; a vaginally adapted version of SLIM (SLIM-V); and a chemically defined version (SLIM-CD). SLIM and SLIM-V improve growth compared to previously published formulations and also support the growth of other vaginal bacteria, including , , , and . SLIM-CD leads to slower growth but may be useful for characterizing nutrient requirements or metabolite production. Importantly, SLIM and SLIM-V also support the growth of human vaginal epithelial cells, providing a foundation for future co-culture studies. Here, we present the formulations of SLIM, SLIM-V, and SLIM-CD and compare the growth of bacterial strains and human cells in these media.IMPORTANCE is one of the most prevalent members of the vaginal microbiome, but whether it promotes health or leads to bacterial vaginosis is not well understood. We have developed media formulations that lead to improved growth and support growth of other vaginal bacteria and human vaginal cells. This will allow for investigation of how interacts with vaginal bacteria and the host, improving our understanding of its role in the vaginal microbiome.

摘要

阴道微生物群的组成与宿主健康密切相关。由特定厌氧菌(如)过度生长引起的细菌性阴道病(BV)与不良健康结果相关。以物种为主导的阴道微生物群被认为可以预防BV。然而,的作用存在争议,有证据表明一些菌株可能无法预防BV,而另一些则可以。为了更好地表征菌株,需要研究它们与阴道细菌和人类细胞的相互作用,但由于缺乏支持快速生长的液体培养基,这一研究受到了阻碍。我们开发了三种用于生长的液体培养基配方:Serrador改良的Iscove培养基(SLIM),它支持强劲的生长;SLIM的阴道适应性版本(SLIM-V);以及化学成分确定的版本(SLIM-CD)。与先前发表的配方相比,SLIM和SLIM-V改善了的生长,还支持其他阴道细菌的生长,包括、、和。SLIM-CD导致生长较慢,但可能有助于表征的营养需求或代谢产物产生。重要的是,SLIM和SLIM-V也支持人类阴道上皮细胞的生长,为未来的共培养研究奠定了基础。在这里,我们介绍了SLIM、SLIM-V和SLIM-CD的配方,并比较了这些培养基中细菌菌株和人类细胞的生长情况。重要性是阴道微生物群中最普遍的成员之一,但它是促进健康还是导致细菌性阴道病尚不清楚。我们开发的培养基配方可改善的生长,并支持其他阴道细菌和人类阴道细胞的生长。这将有助于研究与阴道细菌和宿主的相互作用,增进我们对其在阴道微生物群中作用的理解。

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