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Bio 328 Immunology Autoimmunity. Negative selection bone marrow.

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Presentation on theme: "Bio 328 Immunology Autoimmunity. Negative selection bone marrow."— Presentation transcript:

1 Bio 328 Immunology Autoimmunity

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4 Negative selection bone marrow

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6 Peripheral tolerance B cells: Clonal Deletion

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8 Peripheral tolerance B-cells: Clonal Anergy. HEL expressed under liver- specific promotor

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11 Negative selection thymus

12 Transfection of re-arranged TCR  and  chain genes. Negative selection Thymus.

13 Negative selection in the thymus

14 Freemartin.

15 Reproductive tract of Freemartin

16 Prevalance of chimeric cells in 15 pairs of freemartin twins. Pessa-Morikawa, et. al, 2003

17 Peripheral tolerance T cells: Clonal Anergy

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19 Non-Obese Diabetic mice BioBreeding rats

20 IPEX = Foxp3 deficiency = Immunodysregulation Poly- Endocrinopathy Enteropathy X-linked

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25 Non-Obese Diabetic mice and BB rats prone to develop spontaneous, autoimmune (type I) diabetes: T reg deficiency. ALPS, Autoimmune Lymphoproliferative Syndrome Fas deficiency (gld/gld) APECED, Autoimmune polyendocrinopathy- candiadiasis-ectodermal dystrophy AIRE deficiency IPEX, Immunodysregulation polyendocrinopathy enteropathy X-linked syndrome (Scurfy) Foxp3 deficiency

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29 Healthy control Hashimoto’s thyroiditis

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31 Fluorescent anti-IgG staining of kidney in Goodpasture syndrome.

32 Healthy control Insulin-dependent diabetes mellitus

33 Skin depigmentation in Vitiligo (Auto-antibodies against melanocytes)

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35 Myasthenia gravis

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39 Autoimmune adreocortical insufficiency

40 Addison disease: Autoimmune adrenocortical insufficiency Abdominal pain Weakness Low blood pressure

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44 Maggie Smith as Professor Minerva McGonagall.

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49 Clearance Hypothesis Tolerance Hypothesis

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61 Methods to detect RF: Rose-Waaler test and Latex- agglutination test.

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66 Scleroderma Systemic Sclerosis

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68 Parotid enlargement Sjogren's syndrome

69 Sjögren's syndrome. (A)Tongue with atrophic papillae and dry and deeply fissured epithelium that replaces functional glandular epithelium; cheilitis is evident bilaterally. A possible cause of these manifestations might be xerostomia, either alone or in combination with fungal infection. (B) Missing teeth and multiple caries. (C) Persistent enlargement of parotid glands.

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71 Ankylosing spondylitis

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73 Experimental and many organ-specific autoimmune diseases are -driven by CD4 + T-cells. -T H 1/T H 2 dichotomy

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75 Mechanisms for Induction of Autoimmunity. 1.Release of sequestered antigen 2.Molecular mimicry 3.Inappropriate expression MHC II INF  4.Polyclonal B cell activation.

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78 Non-Obese Diabetic mice and BB rats prone to develop spontaneous, autoimmune (type I) diabetes: T reg deficiency. ALPS, Autoimmune Lymphoproliferative Syndrome Fas deficiency (gld/gld) APECED, Autoimmune polyendocrinopathy- candiadiasis-ectodermal dystrophy AIRE deficiency IPEX, Immunodysregulation polyendocrinopathy enteropathy X-linked syndrome (Scurfy) Foxp3 deficiency

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83 Commensal microbiota and myelin autoantigen cooperate to trigger autoimmune demyelination Kerstin Berer1, Marsilius Mues1, Michail Koutrolos1, Zakeya Al Rasbi1, Marina Boziki1, Caroline Johner2, Hartmut Wekerle1 & Gurumoorthy Krishnamoorthy1 Nature 24 November 2011, 479 p538-541.

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89 The End


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