PMID- 26556803 OWN - NLM STAT- MEDLINE DCOM- 20160616 LR - 20181113 IS - 1932-6203 (Electronic) IS - 1932-6203 (Linking) VI - 10 IP - 11 DP - 2015 TI - Gene Expression Profiles from Disease Discordant Twins Suggest Shared Antiviral Pathways and Viral Exposures among Multiple Systemic Autoimmune Diseases. PG - e0142486 LID - 10.1371/journal.pone.0142486 [doi] LID - e0142486 AB - Viral agents are of interest as possible autoimmune triggers due to prior reported associations and widely studied molecular mechanisms of antiviral immune responses in autoimmunity. Here we examined new viral candidates for the initiation and/or promotion of systemic autoimmune diseases (SAID), as well as possible related signaling pathways shared in the pathogenesis of those disorders. RNA isolated from peripheral blood samples from 33 twins discordant for SAID and 33 matched, unrelated healthy controls was analyzed using a custom viral-human gene microarray. Paired comparisons were made among three study groups-probands with SAID, their unaffected twins, and matched, unrelated healthy controls-using statistical and molecular pathway analyses. Probands and unaffected twins differed significantly in the expression of 537 human genes, and 107 of those were associated with viral infections. These 537 differentially expressed human genes participate in overlapping networks of several canonical, biologic pathways relating to antiviral responses and inflammation. Moreover, certain viral genes were expressed at higher levels in probands compared to either unaffected twins or unrelated, healthy controls. Interestingly, viral gene expression levels in unaffected twins appeared intermediate between those of probands and the matched, unrelated healthy controls. Of the viruses with overexpressed viral genes, herpes simplex virus-2 (HSV-2) was the only human viral pathogen identified using four distinct oligonucleotide probes corresponding to three HSV-2 genes associated with different stages of viral infection. Although the effects from immunosuppressive therapy on viral gene expression remain unclear, this exploratory study suggests a new approach to evaluate shared viral agents and antiviral immune responses that may be involved in the development of SAID. FAU - Gan, Lu AU - Gan L AD - Environmental Autoimmunity Group, Clinical Research Branch, National Institute of Environmental Health Sciences, National Institutes of Health, Bethesda, Maryland, United States of America. FAU - O'Hanlon, Terrance P AU - O'Hanlon TP AD - Environmental Autoimmunity Group, Clinical Research Branch, National Institute of Environmental Health Sciences, National Institutes of Health, Bethesda, Maryland, United States of America. FAU - Lai, Zhennan AU - Lai Z AD - Molecular Physiology and Therapeutics Branch, National Institute of Dental and Craniofacial Research, National Institutes of Health, Bethesda, Maryland, United States of America. FAU - Fannin, Rick AU - Fannin R AD - Microarray Core, Laboratory of Toxicology and Pharmacology, National Institute of Environmental Health Sciences, National Institutes of Health, Research Triangle Park, North Carolina, United States of America. FAU - Weller, Melodie L AU - Weller ML AD - Molecular Physiology and Therapeutics Branch, National Institute of Dental and Craniofacial Research, National Institutes of Health, Bethesda, Maryland, United States of America. FAU - Rider, Lisa G AU - Rider LG AD - Environmental Autoimmunity Group, Clinical Research Branch, National Institute of Environmental Health Sciences, National Institutes of Health, Bethesda, Maryland, United States of America. FAU - Chiorini, John A AU - Chiorini JA AD - Molecular Physiology and Therapeutics Branch, National Institute of Dental and Craniofacial Research, National Institutes of Health, Bethesda, Maryland, United States of America. FAU - Miller, Frederick W AU - Miller FW AD - Environmental Autoimmunity Group, Clinical Research Branch, National Institute of Environmental Health Sciences, National Institutes of Health, Bethesda, Maryland, United States of America. LA - eng SI - GEO/GSE74027 GR - Intramural NIH HHS/United States PT - Journal Article PT - Research Support, N.I.H., Extramural PT - Research Support, N.I.H., Intramural PT - Twin Study DEP - 20151110 PL - United States TA - PLoS One JT - PloS one JID - 101285081 SB - IM MH - Adolescent MH - Autoimmune Diseases/*genetics/virology MH - Autoimmunity/genetics MH - Child MH - Child, Preschool MH - Female MH - Gene Expression Profiling MH - *Genes, Viral MH - *Herpesvirus 2, Human MH - Humans MH - Male MH - Transcriptome MH - Twins/*genetics MH - Young Adult PMC - PMC4640563 COIS- Competing Interests: The authors have declared that no competing interests exist. EDAT- 2015/11/12 06:00 MHDA- 2016/06/17 06:00 PMCR- 2015/11/10 CRDT- 2015/11/12 06:00 PHST- 2015/07/14 00:00 [received] PHST- 2015/10/22 00:00 [accepted] PHST- 2015/11/12 06:00 [entrez] PHST- 2015/11/12 06:00 [pubmed] PHST- 2016/06/17 06:00 [medline] PHST- 2015/11/10 00:00 [pmc-release] AID - PONE-D-15-30945 [pii] AID - 10.1371/journal.pone.0142486 [doi] PST - epublish SO - PLoS One. 2015 Nov 10;10(11):e0142486. doi: 10.1371/journal.pone.0142486. eCollection 2015.