- 関
- lymphocyte function-associated antigen-1, leukocyte function-associated antigen 1
- 同
- リンパ球機能関連抗原1
- 関
- リンパ球機能関連抗原 LFA、インテグリン
- 同
- CDlla
first aid step1 2006 p.190
臨床関連
WordNet
- the 12th letter of the Roman alphabet (同)l
PrepTutorEJDIC
- lira(イタリアの貨幣単位リラ)
- low frequency
Wikipedia preview
出典(authority):フリー百科事典『ウィキペディア(Wikipedia)』「2016/04/21 07:34:50」(JST)
[Wiki en表示]
Lymphocyte function-associated antigen 1, also known as LFA-1 is found on all T-cells and also on B-cells, macrophages and neutrophils and is involved in recruitment to the site of infection. It binds to ICAM-1 on antigen-presenting cells and functions as an adhesion molecule. LFA-1 is the first to bind T-cells to antigen-presenting cells and initially binds weakly. A signal from the T-cell receptor and/or the cytokine receptor changes the conformation and prolongs the cell contact, allowing the T-cell to proliferate. LFA-1/ICAM-1 interaction has recently been shown to be important for T cell-T cell interactions, leading to further T cell differentiation.[citation needed]
LFA-1 is part of the family of leukocyte integrins that are recognised by their common β-chains (β2, CD18). LFA-1 also has a distinct α-chain (αL, CD11a).[citation needed]
LFA-1 has also been found in a soluble form.[1]
Contents
- 1 See also
- 2 Further reading
- 3 References
- 4 External links
See also
- Leukocyte adhesion deficiency
Further reading
- Janeway, Travers, Walport, Shlomchik, Immunobiology 6th ed. (2005) Garland Science:NY
- Parham, Peter, The Immune System 3rd ed. (2009) Garland Science: London and New York
References
- ^ Gjelstrup, L. C.; Boesen, T.; Kragstrup, T. W.; Jorgensen, A.; Klein, N. J.; Thiel, S.; Deleuran, B. W.; Vorup-Jensen, T. (8 September 2010). "Shedding of Large Functionally Active CD11/CD18 Integrin Complexes from Leukocyte Membranes during Synovial Inflammation Distinguishes Three Types of Arthritis through Differential Epitope Exposure". The Journal of Immunology 185 (7): 4154–4168. doi:10.4049/jimmunol.1000952.
External links
- LFA-1 at the US National Library of Medicine Medical Subject Headings (MeSH)
- Davignon D, Martz E, Reynolds T, Kürzinger K, Springer TA (1981). "Lymphocyte function-associated antigen 1 (LFA-1): a surface antigen distinct from Lyt-2,3 that participates in T lymphocyte-mediated killing". Proc. Natl. Acad. Sci. U.S.A. 78 (7): 4535–9. doi:10.1073/pnas.78.7.4535. PMC: 319826. PMID 7027264.
- ITGAL ITGB2 Info with links in the Cell Migration Gateway
- Audrey Gérard, Omar Khan, Peter Beemiller, Erin Oswald, Joyce Hu, Mehrdad Matloubian, Matthew F Krummel (2013). "Secondary T cell–T cell synaptic interactions drive the differentiation of protective CD8+ T cells". Nature Immunology 14: 356–363. doi:10.1038/ni.2547.
Membrane proteins: cell adhesion molecules
|
|
Calcium-independent |
IgSF CAM |
- N-CAM (Myelin protein zero)
- ICAM (1, 5)
- VCAM-1
- PE-CAM
- L1-CAM
- Nectin (PVRL1, PVRL2, PVRL3)
|
|
|
Calcium-dependent |
Cadherins |
Classical |
|
|
Desmosomal |
- Desmoglein (DSG1, DSG2, DSG3, DSG4)
- Desmocollin (DSC1, DSC2, DSC3)
|
|
Protocadherin |
|
|
Unconventional/ungrouped |
- T-cadherin
- CDH4
- CDH5
- CDH6
- CDH8
- CDH11
- CDH12
- CDH15
- CDH16
- CDH17
- CDH9
- CDH10
|
|
|
Selectins |
- E-selectin
- L-selectin
- P-selectin
|
|
Integrins |
- LFA-1 (CD11a+CD18)
- Integrin alphaXbeta2 (CD11c+CD18)
- Macrophage-1 antigen (CD11b+CD18)
- VLA-4 (CD49d+CD29)
- Glycoprotein IIb/IIIa (ITGA2B+ITGB3)
|
|
|
Other |
- Lymphocyte homing receptor: CD44
- L-selectin
- integrin (VLA-4, LFA-1)
- Carcinoembryonic antigen
- CD22
- CD24
- CD44
- CD146
- CD164
|
|
Integrins
|
|
Alpha |
- A1
- A2
- A3
- A4
- A5
- A6
- A7
- A8
- A9
- A10
- A11
- AD
- AE
- AL
- AM
- AV
- AX
|
|
Beta |
|
|
Dimers |
Cytoadhesin receptor: |
- Integrin alpha6beta4
- Glycoprotein IIb/IIIa
|
|
Fibrinogen receptor: |
|
|
Fibronectin receptor: |
- Integrin alpha2beta1
- Integrin alpha4beta1
- Integrin alpha5beta1
|
|
Leukocyte-adhesion receptor: |
- LFA-1
- Macrophage-1 antigen
- Integrin alphaXbeta2
|
|
Very late antigen receptor: |
- Integrin alpha1beta1
- Integrin alpha2beta1
- Integrin alpha3beta1
- VLA-4
- Alpha-5 beta-1
- Integrin alpha6beta1
|
|
Vitronectin receptor: |
- Alpha-v beta-3
- Alpha-v beta-5
|
|
|
see also cell surface receptor deficiencies
|
|
UpToDate Contents
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English Journal
- Integrin LFA-1 regulates cell adhesion via transient clutch formation.
- Ishibashi M1, Miyanaga Y1, Matsuoka S1, Kozuka J1, Togashi Y2, Kinashi T3, Ueda M4.
- Biochemical and biophysical research communications.Biochem Biophys Res Commun.2015 Aug 21;464(2):459-66. doi: 10.1016/j.bbrc.2015.06.155. Epub 2015 Jul 2.
- Integrin LFA-1 regulates immune cell adhesion and trafficking by binding to ICAM-1 upon chemokine stimulation. Integrin-mediated clutch formation between extracellular ICAM-1 and the intracellular actin cytoskeleton is important for cell adhesion. We applied single-molecule tracking analysis to LFA-
- PMID 26143530
- Modulation of Adhesion Molecules by Cholesterol-Lowering Therapy in Mononuclear Cells from Hypercholesterolemic Patients.
- Cerda A1,2, Rodrigues AC3, Alves C1, Genvigir FD1, Fajardo CM1, Dorea EL4, Gusukuma MC4, Pinto GA4, Hirata MH1, Hirata RD1.
- Cardiovascular therapeutics.Cardiovasc Ther.2015 Aug;33(4):168-76. doi: 10.1111/1755-5922.12126.
- INTRODUCTION: Cholesterol-lowering therapy has been related with several pleiotropic effects including anti-inflammatory action in vascular endothelium; however, their influence on monocyte adhesion molecules is poorly described.AIMS: To investigate the effect of inhibitors of synthesis (statins) an
- PMID 25903419
- ICAM-1 and VCAM-1 are differentially expressed on blood-retinal barrier cells during experimental autoimmune uveitis.
- Dewispelaere R1, Lipski D2, Foucart V3, Bruyns C4, Frère A5, Caspers L5, Willermain F3.
- Experimental eye research.Exp Eye Res.2015 Aug;137:94-102. doi: 10.1016/j.exer.2015.06.017. Epub 2015 Jun 17.
- Adhesion molecules play a central role in leukocyte adhesion to the blood-retinal barrier (BRB) during uveitis. VCAM-1 expression on the BRB has been already described but although structurally similar, ICAM-1 has shown in various autoimmunity models to have distinct role and expression. Here, we in
- PMID 26093277
Japanese Journal
- 〈原著〉AIDS関連中枢神経原発悪性リンパ腫の発生におけるリンパ球機能関連抗原-1(LFA-1)の関与
- 笹川 淳,前田 裕弘,頼 晋也,平瀬 主税,山口 晃史,森田 泰慶,松村 到
- 近畿大学医学雑誌 37(1-2), 45-52, 2012-3
- … リンパ球機能関連抗原-1(lymphocyte function-associated antigen-1, LFA-1)のβ鎖であるCD18の発現は, HIV感染者由来のB-LCL(B-LCL_HIV)と健常者由来のB-LCL(B-LCL_N)の何れにおいても, EBV感染前のB細胞と比較して増強していた.また, B-LCL_HIVはB-LCL_NよりCD18を強く発現していた.B-LCL_<HIV>はB-LCL_Nに比較し, LFA-1のリガンドである細胞 …
- NAID 120004226572
- Neutrophil-derived resistin release induced by Aggregatibacter actinomycetemcomitans.
- Furugen Reiko,Hayashida Hideaki,Yoshii Yumiko,Saito Toshiyuki
- FEMS Microbiology Letters 321(2), 175-182, 2011-08
- … Pretreatment of neutrophils with a monoclonal antibody to CD18, β chain of lymphocyte function-associated molecule 1 (LFA-1), or an Src family tyrosine kinase inhibitor before incubation with the highly leukotoxic strain inhibited the release of resistin. …
- NAID 120003751834
Related Links
- Lymphocyte function-associated antigen 1, also known as LFA-1 is found on all T -cells and also on B-cells, macrophages and neutrophils and is involved in recruitment to the site of infection. It binds to ICAM-1 on antigen-presenting cells and ...
Related Pictures
★リンクテーブル★
[★]
- 英
- adhesion molecule
- 同
- 接着因子
- 関
接着分子のファミリー
白血球の相互作用に関与している接着分子 (IMM.87)
白血球の相互作用に関与している免疫グロブリンスーパーファミリーの接着分子 (IMM.329)
-接着分子
-細胞接着分子
-カドヘリン
[★]
- 英
- leukocyte, leucocyte (Z), white blood cell (Z), WBC, white corpuscle, white cell
- 関
- 赤血球、血球、血液
白血球
基準値
- 4000-9000 (/μl) (2007前期解剖学授業プリント)
- 異常値の出るメカニズム第5版
- 5000- 8400 (/μl) (健常者の2/3)
- 4500-11000 (/μl) (95%範囲)
年齢との関連
生理的な変動
- 精神的ストレス↑ → 交感神経の刺激により好中球の血管壁遊離が促進されるため
- 午前↓、午後↑
基準値
|
07解
|
異メ
|
流マ
|
HIM.A-1
|
顆粒球
|
好中球
|
桿状核球
|
40~70
|
44~66
|
40~60
|
4~14
|
0~5
|
分葉核球
|
43~59
|
40~70
|
好酸球
|
2~4
|
0~ 4
|
2~4
|
0~6
|
好塩基球
|
0~2
|
0~0.5
|
0~2
|
0~2
|
無顆粒球
|
リンパ球
|
25~40
|
30~38
|
26~40
|
20~50
|
単球
|
3~6
|
0~ 5
|
3~6
|
4~8
|
- 07解: 2007前期解剖学授業プリント
- 異メ: 異常値の出るメカニズム第5版 p.91
- 流マ: 流れが分かる実践検査マニュアル上巻 p.10
(margination)
- 1. 赤血球は軽く早く流れるので血管の中央をながれ、白血球は血管のへりを流れている
(rolling)
(adheresion & arrested)
(transmigration)
- 6. 白血球と血管内皮細胞に発現しているPECAM-1(CD31)がお互い接着し、白血球が血管内皮細胞の間隙を通って細胞外マトリックスに入る
白血球の染色
- 好酸性:赤く染まる→ヘモグロビン
- 好塩基性:青く染まる→リボソーム、核内のヒストン蛋白
- 好酸性でも好塩基性でもない:淡いピンクに染まる
- MPOをもつ:顆粒球(前骨髄球~分葉核球)、単球(前単球~単球)
- MPOをもたない:リンパ球系細胞
- 好中球:長鎖エステルを分解
- 単球:短鎖エステルを分解
関節液
- 炎症 感染
- 200 2000 20000
- 500 5000 50000
臨床関連
- 白血球のインテグリンが欠損または減少する先天性疾患
- 反復性の細菌皮膚感染
- SIRSの診断基準:<4,000/ul or >12,000/ul
[★]
- 英
- T cell
- 同
- Tリンパ球、T lymphocyte
- 関
- TCR、B細胞、MHC
- 図:IMM.315(T細胞の成熟)
- 胸腺で成熟したT細胞は血流によって移動し、リンパ節の傍皮質、白脾髄のリンパ性動脈周囲鞘、パイエル板の傍濾胞域に集まる(人間の正常構造と機能 VIIA血管・免疫 p.28)
種類
- ヘルパーT細胞(Th細胞)
- キラーT細胞(Tc細胞)
- サプレッサーT細胞(Treg細胞)
T細胞の抗原認識 (SP.248)
CD4+ T細胞のサイトカイン放出とその原因
Th細胞活性化と接着分子
[★]
- 英
- killer T cell
- 同
- 細胞傷害性T細胞 cytotoxic T cell 、細胞溶解性T細胞 cytolytic T cell、細胞傷害性Tリンパ球 cytotoxic T lymphocyte CTL、細胞溶解性Tリンパ球 cytolytic T lymphocyte CTL
- 関
- ヘルパーT細胞、T細胞、ラック細胞 LAK細胞
- 同
- KT
- 偏性細胞内寄生体であるウイルス感染において特に誘導されやすい (SMB.47)
機能
- キラーT細胞のTCRが、抗原を提示しているMHC class Iを認識し、キラーT細胞のCD8がMHC class Iとの結合を増強して、細胞傷害を行う (SP.250)
- 攻撃の方法は2つあり、リソソームから酵素を注入する方法と、パーフォリン(perforin)を注入する方法とがある (SP.250)
抗原認識と細胞傷害 (SMB.48)
新しいトピック
- 結核菌の殺傷に関与
-細胞傷害性T細胞
[★]
- 英
- integrin, integrins
- 関
インテグリン IMM.87
[★]
[★]
[★]
リンパ球機能関連抗原