Nov 20, 2015

Conjecture: Some auto-immune diseases are caused by the tissue, not a problem with the immune system

BioRxiv : the Preprint Server for Biology
Harlan S Robins

Abstract

Applying highly sensitive modern immune profiling techniques to the blood or inflamed tissue of auto-immune patients with one of the common T-cell mediated diseases fails to detect large clonal expansions or other signs of a dysregulated immune system. Additionally, these new methods have shown that self-reactive T-cells are found in the periphery (and are not completely negatively selected in the thymus as previously believed). Combining these new data with well-established studies in auto-immunity leads to the conjecture that certain auto-immune diseases are likely to be caused by defects in tissue, not by dysregulation of the adaptive immune system. In particular, one hypothesis is that specific tissues up-regulate HLA class 2 genes, presenting epitopes that are bound by CD4+ helper T cells, which facilitates an immune response against the tissue specific cells.

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Mentioned in this Paper

Study
Immune Response
Immune System
T-Lymphocyte
Immune System Diseases
Genes
Neoplasm of Uncertain or Unknown Behavior of Thymus
Disease of Thymus Gland
Etiology
Physiological Stress Response

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