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| Content Provider | World Health Organization (WHO)-Global Index Medicus |
|---|---|
| Author | Tyldsley, Amanda S. Seykora, John T. Rafail, Stavros Lambris, John D. Chehoud, Christel Grice, Elizabeth A. |
| Description | Author Affiliation: Chehoud C ( Departments of Dermatology and Pathology and Laboratory Medicine, University of Pennsylvania Perelman School of Medicine, Philadelphia, PA 19104.); |
| Abstract | The skin is colonized by a plethora of microbes that include commensals and potential pathogens, but it is currently unknown how cutaneous host immune mechanisms influence the composition, diversity, and quantity of the skin microbiota. Here we reveal an interactive role for complement in cutaneous host-microbiome interactions. Inhibiting signaling of the complement component C5a receptor (C5aR) altered the composition and diversity of the skin microbiota as revealed by deep sequencing of the bacterial 16S rRNA gene. In parallel, we demonstrate that C5aR inhibition results in down-regulation of genes encoding cutaneous antimicrobial peptides, pattern recognition receptors, and proinflammatory mediators. Immunohistochemistry of inflammatory cell infiltrates in the skin showed reduced numbers of macrophages and lymphocytes with C5aR inhibition. Further, comparing cutaneous gene expression in germ-free mice vs. conventionally raised mice suggests that the commensal microbiota regulates expression of complement genes in the skin. These findings demonstrate a component of host immunity that impacts colonization of the skin by the commensal microbiota and vice versa, a critical step toward understanding host-microbe immune mutualism of the skin and its implications for health and disease. Additionally, we reveal a role for complement in homeostatic host-microbiome interactions of the skin. |
| ISSN | 00278424 |
| e-ISSN | 10916490 |
| Journal | Proceedings of the National Academy of Sciences of the United States of America |
| Issue Number | 37 |
| Volume Number | 110 |
| Language | English |
| Publisher | National Academy of Sciences |
| Publisher Date | 2013-09-01 |
| Publisher Place | United States |
| Access Restriction | Open |
| Subject Keyword | Complement System Proteins Metabolism Microbiota Immunology Skin Microbiology Animals Antimicrobial Cationic Peptides Genetics Down-Regulation Gene Expression Regulation Immunity, Innate Inflammation Inflammation Mediators Mice Mice, Inbred C57BL Molecular Sequence Data RNA, Bacterial RNA, Ribosomal, 16S Receptor, Anaphylatoxin C5a Antagonists & Inhibitors Receptors, Pattern Recognition Signal Transduction Research Support, N.I.H., Extramural Research Support, Non-U.S. Gov't Multidisciplinary |
| Content Type | Text |
| Resource Type | Article |
| Subject | Multidisciplinary |
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