Ganju Parul, Nagpal Sunil, Mohammed M H, Nishal Kumar P, Pandey Rajesh, Natarajan Vivek T, Mande Sharmila S, Gokhale Rajesh S
CSIR-Institute of Genomics and Integrative Biology (IGIB), Mathura Road, New Delhi, India.
National Institute of Immunology, Aruna Asaf Ali Marg, New Delhi, India.
Sci Rep. 2016 Jan 13;6:18761. doi: 10.1038/srep18761.
Healthy human skin harbours a diverse array of microbes that comprise the skin microbiome. Commensal bacteria constitute an important component of resident microbiome and are intricately linked to skin health. Recent studies describe an association between altered skin microbial community and epidemiology of diseases, like psoriasis, atopic dermatitis etc. In this study, we compare the differences in bacterial community of lesional and non-lesional skin of vitiligo subjects. Our study reveals dysbiosis in the diversity of microbial community structure in lesional skin of vitiligo subjects. Although individual specific signature is dominant over the vitiligo-specific microbiota, a clear decrease in taxonomic richness and evenness can be noted in lesional patches. Investigation of community specific correlation networks reveals distinctive pattern of interactions between resident bacterial populations of the two sites (lesional and non-lesional). While Actinobacterial species constitute the central regulatory nodes (w.r.t. degree of interaction) in non-lesional skin, species belonging to Firmicutes dominate on lesional sites. We propose that the changes in taxonomic characteristics of vitiligo lesions, as revealed by our study, could play a crucial role in altering the maintenance and severity of disease. Future studies would elucidate mechanistic relevance of these microbial dynamics that can provide new avenues for therapeutic interventions.
健康的人体皮肤中栖息着各种各样的微生物,它们共同构成了皮肤微生物群。共生细菌是常驻微生物群的重要组成部分,与皮肤健康有着复杂的联系。最近的研究描述了皮肤微生物群落改变与疾病流行病学之间的关联,如银屑病、特应性皮炎等。在本研究中,我们比较了白癜风患者皮损和非皮损部位皮肤细菌群落的差异。我们的研究揭示了白癜风患者皮损部位微生物群落结构多样性的失调。尽管个体特异性特征在白癜风特异性微生物群中占主导地位,但在皮损部位可以明显注意到分类丰富度和均匀度的下降。对群落特异性相关网络的研究揭示了两个部位(皮损和非皮损)常驻细菌种群之间独特的相互作用模式。在非皮损皮肤中,放线菌属物种构成了中心调节节点(就相互作用程度而言),而在皮损部位,厚壁菌门的物种占主导地位。我们认为,我们的研究揭示的白癜风皮损分类特征的变化可能在改变疾病的维持和严重程度方面发挥关键作用。未来的研究将阐明这些微生物动态的机制相关性,这可为治疗干预提供新的途径。