Characterization of mucosal Candida albicans biofilms.

Characterization of mucosal Candida albicans biofilms.
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粘膜念珠菌生物膜的表征。

DOI:
10.1371/journal.pone.0007967
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发表时间:
2009-11-24
期刊:
影响因子:
3.7
通讯作者:
Vasilakos J
Vasilakos J
中科院分区:
综合性期刊3区
文献类型:
--
作者:
Dongari-Bagtzoglou A;Kashleva H;Dwivedi P;Diaz P;Vasilakos J

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C.白色念珠菌引发由生物膜生长引起的消化道粘膜的复发性感染。虽然C.近年来,关于白色念珠菌在非生物表面上形成生物膜的研究已经有了很好的记录,但是没有关于直接在粘膜表面上形成生物膜的信息。本研究的目的是表征口腔粘膜上形成的念珠菌生物膜的结构和组成。我们发现口腔念珠菌生物膜由酵母菌、菌丝和嗜酸性细菌组成,角蛋白分散在细胞间隙中。中性粒细胞迁移通过口腔粘膜并在生物膜团内形成巢。细胞壁多糖β-葡聚糖在粘膜生物膜生长期间暴露,并且更均匀地存在于侵入口腔粘膜的生物膜生物体的表面上。我们的结论是C.白色念珠菌形成由共生细菌植物群和宿主成分组成的复杂粘膜生物膜。这些发现很重要,因为它们可以促使当前研究的重点转移,即研究肠道-细菌相互作用在粘膜感染发病机制中的作用以及β-葡聚糖介导的信号传导在宿主反应中的作用。
C. albicans triggers recurrent infections of the alimentary tract mucosa that result from biofilm growth. Although the ability of C. albicans to form a biofilm on abiotic surfaces has been well documented in recent years, no information exists on biofilms that form directly on mucosal surfaces. The objectives of this study were to characterize the structure and composition of Candida biofilms forming on the oral mucosa. We found that oral Candida biofilms consist of yeast, hyphae, and commensal bacteria, with keratin dispersed in the intercellular spaces. Neutrophils migrate through the oral mucosa and form nests within the biofilm mass. The cell wall polysaccharide β-glucan is exposed during mucosal biofilm growth and is more uniformly present on the surface of biofilm organisms invading the oral mucosa. We conclude that C. albicans forms complex mucosal biofilms consisting of both commensal bacterial flora and host components. These discoveries are important since they can prompt a shift of focus for current research in investigating the role of Candida-bacterial interactions in the pathogenesis of mucosal infections as well as the role of β-glucan mediated signaling in the host response.
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发表时间: 2007-11-15
期刊: The Journal of infectious diseases
影响因子: --
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期刊: NATURE PROTOCOLS
影响因子: 14.8
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发表时间: 2009-05-01
期刊: EUKARYOTIC CELL
影响因子: --
作者:
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DOI: 10.1371/journal.pone.0002067
发表时间: 2008-04-30
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影响因子: 3.7
作者:
Southern, Peter;Horbul, Julie;Maher, Diane;Davis, Dana A.
通讯作者: Davis, Dana A.