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- de Bruin, LMO, et al.
(författare)
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Hypomorphic Rag1 mutations alter the preimmune repertoire at early stages of lymphoid development
- 2018
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Ingår i: Blood. - : American Society of Hematology. - 1528-0020 .- 0006-4971. ; 132:3, s. 281-292
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Tidskriftsartikel (refereegranskat)abstract
- Mice with hypomorphic mutations in the Rag1 C-terminal domain are a model of leaky combined immunodeficiency with autoantibodies. Hypomorphic C-terminal domain Rag1 mutations cause repertoire skewing at the earliest stages of B- and T-cell development.
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- Eriksson, D, et al.
(författare)
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Extended exome sequencing identifies BACH2 as a novel major risk locus for Addison's disease
- 2016
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Ingår i: Journal of Internal Medicine. - : Wiley. - 0954-6820 .- 1365-2796. ; 286:6, s. 595-608
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Tidskriftsartikel (refereegranskat)abstract
- BACKGROUND: Autoimmune disease is one of the leading causes of morbidity and mortality worldwide. In Addison's disease, the adrenal glands are targeted by destructive autoimmunity. Despite being the most common cause of primary adrenal failure, little is known about its aetiology.METHODS: To understand the genetic background of Addison's disease, we utilized the extensively characterized patients of the Swedish Addison Registry. We developed an extended exome capture array comprising a selected set of 1853 genes and their potential regulatory elements, for the purpose of sequencing 479 patients with Addison's disease and 1394 controls.RESULTS: We identified BACH2 (rs62408233-A, OR = 2.01 (1.71-2.37), P = 1.66 × 10(-15) , MAF 0.46/0.29 in cases/controls) as a novel gene associated with Addison's disease development. We also confirmed the previously known associations with the HLA complex.CONCLUSION: Whilst BACH2 has been previously reported to associate with organ-specific autoimmune diseases co-inherited with Addison's disease, we have identified BACH2 as a major risk locus in Addison's disease, independent of concomitant autoimmune diseases. Our results may enable future research towards preventive disease treatment.
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- Kamali-Moghaddam, Masood, et al.
(författare)
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Sensitive detection of A beta protofibrils by proximity ligation : relevance for Alzheimer's disease
- 2010
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Ingår i: BMC Neuroscience. - : Springer Science and Business Media LLC. - 1471-2202. ; 11, s. 124-
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Tidskriftsartikel (refereegranskat)abstract
- Background: Protein aggregation plays important roles in several neurodegenerative disorders. For instance, insoluble aggregates of phosphorylated tau and of A beta peptides are cornerstones in the pathology of Alzheimer's disease. Soluble protein aggregates are therefore potential diagnostic and prognostic biomarkers for their cognate disorders. Detection of the aggregated species requires sensitive tools that efficiently discriminate them from monomers of the same proteins. Here we have established a proximity ligation assay (PLA) for specific and sensitive detection of A beta protofibrils via simultaneous recognition of three identical determinants present in the aggregates. PLA is a versatile technology in which the requirement for multiple target recognitions is combined with the ability to translate signals from detected target molecules to amplifiable DNA strands, providing very high specificity and sensitivity. Results: For specific detection of A beta protofibrils we have used a monoclonal antibody, mAb158, selective for A beta protofibrils in a modified PLA, where the same monoclonal antibody was used for the three classes of affinity reagents required in the assay. These reagents were used for detection of soluble Ab aggregates in solid- phase reactions, allowing detection of just 0.1 pg/ml A beta protofibrils, and with a dynamic range greater than six orders of magnitude. Compared to a sandwich ELISA setup of the same antibody the PLA increases the sensitivity of the Ab protofibril detection by up to 25- fold. The assay was used to measure soluble Ab aggregates in brain homogenates from mice transgenic for a human allele predisposing to A beta aggregation. Conclusions: The proximity ligation assay is a versatile analytical technology for proteins, which can provide highly sensitive and specific detection of A beta aggregates - and by implication other protein aggregates of relevance in Alzheimer's disease and other neurodegenerative disorders.
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- Landegren, N, et al.
(författare)
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AIREing out autoimmunity
- 2015
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Ingår i: SCIENCE TRANSLATIONAL MEDICINE. - 1946-6234. ; 7:292
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Tidskriftsartikel (övrigt vetenskapligt/konstnärligt)
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- Landegren, Nils, 1986-, et al.
(författare)
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Comment on 'AIRE-deficient patients harbor unique high-affinity disease-ameliorating autoantibodies'
- 2019
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Ingår i: eLife. - : ELIFE SCIENCES PUBLICATIONS LTD. - 2050-084X. ; 8
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Tidskriftsartikel (refereegranskat)abstract
- The AIRE gene plays a key role in the development of central immune tolerance by promoting thymic presentation of tissue-specific molecules. Patients with AIRE-deficiency develop multiple autoimmune manifestations and display autoantibodies against the affected tissues. In 2016 it was reported that: i) the spectrum of autoantibodies in patients with AIRE-deficiency is much broader than previously appreciated; ii) neutralizing autoantibodies to type I interferons (IFNs) could provide protection against type 1 diabetes in these patients (Meyer et al., 2016). We attempted to replicate these new findings using a similar experimental approach in an independent patient cohort, and found no evidence for either conclusion.
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