PMID- 23985570 OWN - NLM STAT- MEDLINE DCOM- 20140716 LR - 20131205 IS - 1476-5470 (Electronic) IS - 1466-4879 (Linking) VI - 14 IP - 8 DP - 2013 Dec TI - Genome-wide expression analysis suggests unique disease-promoting and disease-preventing signatures in Pemphigus vulgaris. PG - 487-99 LID - 10.1038/gene.2013.44 [doi] AB - To evaluate pathogenetic mechanisms underlying disease development and progression in the autoimmune skin disease Pemphigus vulgaris (PV), we examined global peripheral blood gene expression in patients and healthy controls. Our goals were to: (1) assign blood gene expression signatures to patients and controls; (2) identify differentially expressed genes (DEGs) and investigate functional pathways associated with these signatures; and (3) evaluate the distribution of DEGs across the genome to identify transcriptional 'hot spots'. Unbiased hierarchical clustering clearly separated patients from human leukocyte antigen (HLA)-matched controls (MCRs; 'disease' signature), and active from remittent patients ('activity' signature). DEGs associated with these signatures are involved in immune response, cytoskeletal reorganization, mitogen-activated protein kinase (MAPK) signaling, oxidation-reduction and apoptosis. We further found that MCRs carrying the PV-associated HLA risk alleles cluster distinctly from unmatched controls (UMCR) revealing an HLA-associated 'control' signature. A subset of DEGs within the 'control' signature overlap with the 'disease' signature, but are inversely regulated in MCR when compared with either PV patients or UMCR, suggesting the existence of a 'protection' signature in healthy individuals carrying the PV HLA genetic risk elements. Finally, we identified 19 transcriptional 'hot spots' across the signatures, which may guide future studies aimed at pinpointing disease risk genes. FAU - Dey-Rao, R AU - Dey-Rao R AD - Department of Dermatology, University at Buffalo, Buffalo, NY, USA. FAU - Seiffert-Sinha, K AU - Seiffert-Sinha K FAU - Sinha, A A AU - Sinha AA LA - eng PT - Journal Article DEP - 20130829 PL - England TA - Genes Immun JT - Genes and immunity JID - 100953417 RN - 0 (HLA Antigens) SB - IM MH - Adult MH - Case-Control Studies MH - Female MH - Genetic Predisposition to Disease MH - *Genome, Human MH - HLA Antigens/genetics MH - Humans MH - Male MH - Middle Aged MH - Pemphigus/diagnosis/*genetics MH - *Transcriptome EDAT- 2013/08/30 06:00 MHDA- 2014/07/17 06:00 CRDT- 2013/08/30 06:00 PHST- 2013/03/26 00:00 [received] PHST- 2013/07/02 00:00 [revised] PHST- 2013/07/19 00:00 [accepted] PHST- 2013/08/30 06:00 [entrez] PHST- 2013/08/30 06:00 [pubmed] PHST- 2014/07/17 06:00 [medline] AID - gene201344 [pii] AID - 10.1038/gene.2013.44 [doi] PST - ppublish SO - Genes Immun. 2013 Dec;14(8):487-99. doi: 10.1038/gene.2013.44. Epub 2013 Aug 29.