title: Blood-based signatures in type 1 diabetes.
abstract: Type 1 diabetes mellitus is one of the most common chronic diseases in childhood. It develops through autoimmune destruction of the pancreatic beta cells and results in lifelong dependence on exogenous insulin. The pathogenesis of type 1 diabetes involves a complex interplay of genetic and environmental factors and has historically been attributed to aberrant adaptive immunity; however, there is increasing evidence for a role of innate inflammation. Over the past decade new methodologies for the analysis of nucleic acid and protein signals have been applied to type 1 diabetes. These studies are providing a new understanding of type 1 diabetes pathogenesis and have the potential to inform the development of new biomarkers for predicting diabetes onset and monitoring therapeutic interventions. In this review we will focus on blood-based signatures in type 1 diabetes, with special attention to both direct transcriptomic analyses of whole blood and immunocyte subsets, as well as plasma/serum-induced transcriptional signatures. Attention will also be given to proteomics, microRNA assays and markers of beta cell death. We will also discuss the results of blood-based profiling in type 1 diabetes within the context of the genetic and environmental factors implicated in the natural history of autoimmune diabetes.
authors.affiliation: The Max McGee National Research Center for Juvenile Diabetes, Children's Research Institute of Children's Hospital of Wisconsin, Milwaukee, WI, USA.|Section of Endocrinology, Department of Pediatrics, The Medical College of Wisconsin, 8701 Watertown Plank Road, Milwaukee, WI, 53226, USA.
authors.forename: Susanne M
authors.initials: SM
authors.lastname: Cabrera
authors.affiliation: The Max McGee National Research Center for Juvenile Diabetes, Children's Research Institute of Children's Hospital of Wisconsin, Milwaukee, WI, USA.|Section of Endocrinology, Department of Pediatrics, The Medical College of Wisconsin, 8701 Watertown Plank Road, Milwaukee, WI, 53226, USA.
authors.forename: Yi-Guang
authors.initials: YG
authors.lastname: Chen
authors.affiliation: Pacific Northwest Diabetes Research Institute, Seattle, WA, USA.
authors.forename: William A
authors.initials: WA
authors.lastname: Hagopian
authors.affiliation: The Max McGee National Research Center for Juvenile Diabetes, Children's Research Institute of Children's Hospital of Wisconsin, Milwaukee, WI, USA. mhessner@mcw.edu.|Section of Endocrinology, Department of Pediatrics, The Medical College of Wisconsin, 8701 Watertown Plank Road, Milwaukee, WI, 53226, USA. mhessner@mcw.edu.
authors.forename: Martin J
authors.initials: MJ
authors.lastname: Hessner
mesh_terms: D015415:Biomarkers / Q000378:metabolism; D003922:Diabetes Mellitus, Type 1 / Q000097:blood* / Q000235:genetics / Q000378:metabolism*; D006801:Humans; D007113:Immunity, Innate / Q000235:genetics / Q000502:physiology
chemical_list: D015415:Biomarkers
keywords: Biomarker; Gene expression profiling; Innate immunity; Microarray; Review; Type 1 diabetes