Live and let die: Hydrogen peroxide production by the commensal flora and its role in maintaining a symbiotic microbiome.

Live and let die: Hydrogen peroxide production by the commensal flora and its role in maintaining a symbiotic microbiome.
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DOI:
10.1111/omi.12231
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发表时间:
2018-10
影响因子:
3.7
通讯作者:
Kreth J
Kreth J
中科院分区:
医学3区
文献类型:
--
作者:
Redanz S;Cheng X;Giacaman RA;Pfeifer CS;Merritt J;Kreth J

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大多数口腔链球菌在需氧生长过程中能够产生过氧化氢(H2 O2),过氧化氢可以通过细胞膜扩散并抑制邻近的竞争物种。竞争性H2 O2生产主要依赖于丙酮酸氧化酶SpxB,并且在较小程度上依赖于乳酸氧化酶LctO,这两者对于有氧环境中的能量产生都是重要的。几项研究指出了H2 O2在口腔环境中产生的广泛影响,包括在生物膜稳态,信号传导和种间相互作用中的潜在作用。在这里,我们总结了目前的研究有关口腔链球菌H2 O2的产生,耐药机制,和生态影响的H2 O2生产。我们还讨论了H2 O2在预防/治疗微生态失调疾病方面的潜在治疗效用,以及其作为口腔健康生物标志物的潜在作用。
The majority of commensal oral streptococci are able to generate hydrogen peroxide (H2O2) during aerobic growth, which can diffuse through the cell membrane and inhibit competing species in close proximity. Competing H2O2 production is mainly dependent upon the pyruvate oxidase, SpxB and to a lesser extent the lactate oxidase LctO, both of which are important for energy generation in aerobic environments. Several studies point to a broad impact of H2O2 production in the oral environment, including a potential role in biofilm homeostasis, signaling, and interspecies interactions. Here, we summarize the current research regarding oral streptococcal H2O2 generation, resistance mechanisms, and the ecological impact of H2O2 production. We also discuss the potential therapeutic utility of H2O2 for the prevention/treatment of dysbiotic diseases as well as its potential role as a biomarker of oral health.
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