1 / 32

徐 刚

万 雪 帅. 徐 刚. 郭 发 灵. 王 文 涛. 赵 彬. 李 庆 虎. 付 强. KIR. killer-cell immunoglobulin—like receptor. Fu qiang. Outline. Diseases associated with KIR Construction Function. Several diseases associated with NK cell and KIR. Graves Behcet's disease Ankylosing spondylitis.

lobo
Download Presentation

徐 刚

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript


  1. 万 雪 帅 徐 刚 郭 发 灵 王 文 涛 赵 彬 李 庆 虎 付 强

  2. KIR killer-cell immunoglobulin—like receptor Fu qiang

  3. Outline • Diseases associated with KIR • Construction • Function

  4. Several diseases associated with NK cell and KIR • Graves • Behcet's disease • Ankylosing spondylitis

  5. Thyroid Eye Disease Graves

  6. Behcet's disease

  7. Ankylosing spondylitis

  8. Outline • Diseases associated with KIR • Construction • Function

  9. What’s KIR • KIR is the killer-cell immunoglobulin—like receptor which is on the surface of natural killer cell. • It can regulate the activity of the NK cell by recognizing and binding HLA2alleleon the target cell specifically

  10. Construction of KIR gene • KIR gene locates on the 19ql3.42 humane chromosome • Usually KIR gene has 9 extrons 1,2 encode the Leader Peptide 3,4 and 5 encode the extracellular D0,D1 D2 Ig-like domains 6,7encode the sequence between domains and the transmembrane segment 8,9encode the intracellular segment

  11. Variety of KIR gene • 1.The number of KIR gene is different in different NK cell clone. • 2.There are many different allelomorph in at the same site.

  12. Construction and classification of KIR Different gene Different construction

  13. Construction and classification of KIR KIR is composed of • Extracellular D0,D1,D2 Ig-like domains • transmembrane fragment • intracellular fragment

  14. Base on the number of Ig—domains in the extracellular region L-type have two ITIM Based on the length of the cytoplasmic tail S-type have no ITIM Classification of KIR KIR2D (p58) KIR3D (p70)

  15. KIR2DL ITIM N -end C -end Binding to DAP-12 KIR can also be divided into inhibitory and activation types

  16. Ligand specificity of KIR KIR on the surface of the NK cell can recognize and bind HLA2Ⅰmolecule on the target cell specifically

  17. KIR-mediated signal transduction

  18. Outline • Diseases associated with KIR • Construction • Function

  19. Function of KIR

  20. KIR’s biological functions • 1.Functions in autoimmune disease • 2.Functions in pregnancy • 3.Functions in hemopoietic stem cell transplantation prognosis

  21. 1.Functions in autoimmune disease KIR and it’s ligand are both with high variety • diabetes mellitus • psoriasis(银屑病) • scleriasis(硬皮病)

  22. 2.Functions in pregnancy • NK cell in decidua plays an important role in allorecognizition during the pregnancy. • NK cell regulate the immune response at the joint between the fetus and matrix by the inhibitory or activation receptor selectively bind the expression of the HLA2Ⅰallele in the trophoderm.

  23. 3.Functions in hemopoietic stem cell transplantation prognosis • When transplantation we should consider the matching of both HLA and KIR. • NK cell may take part in the pathologyprocess of Graft Versus Host Disease (GVHD) after transplantation of homologousbone marrow. .

  24. An experiment of KIR • Analyze the KIR gene type of 18 Leukemia patients whose HLA are fine matched including 13 HLA+, KIR- pair;3 HLA+ and KIR+ pair;2 HLA+,KIR- pair but with no affinity, and monitor the reconstruction of the NK receptor. RESULTS: 8 have good reconstruction of the NK receptor 6-9months later including KIR-;5 have a low KIR express 1year after transplantation,3 of them reach to the donor’s KIR level 3 years later;5 have serious complication. (a donor and a recipient makes a pair ; “+” means matches well, “-” means not match)

  25. Epilogue NK cell is a very important component of innate immune system. It’s activity depends on the interaction between the receptors and ligands .KIR is one of the important receptor which bind to HLA2Ⅰspecifically.Study KIR deeply ,we can know the mechanism of NK’s biologic functions on molecule level. The study of the functions in autoimmune disease, pregnancy, hemopoietic stem cell transplantation prognosis will do good to the clinical usage of NK cell.

  26. Team member: Xu gang Wang wentao Zhao bin Li qinghu Guo faling Wan xueshuai 04临六3班之3406

  27. THANK YOU

  28. 气有浩然 学无止境

  29. Thank you Faces to Lives!

More Related