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Peripheral tolerance

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and apoptotic cells, which occurs physiologically in peripheral tissues. Antigen-loaded iDCs migrate to the lymph nodes, secrete IL-10, TGF-β and present antigen to the naive T cells without costimulation. If the T cell recognizes the antigen, it is turned into the anergic state, depleted or converted to Treg. iDCs are more potent Treg inducers than lymph node resident DCs.
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molecules are upregulated by cytokines (signal 3) in the context of acute inflammation. Without pro-inflammatory cytokines, co-stimulatory molecules will not be expressed on the surface of the antigen presenting cell, and so anergy will result if there is an MHC-TCR interaction between the T cell and the APC.  TCR stimulation leads to translocation of
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Naive cells must enter and exit a quiescent state at the proper timing in their life cycle. If T cells exit a quiescence prematurely there is a lack of tolerance to potential self-reactive cells. T cells rely on negative regulators to keep them in a quiescence state until they are ready for exit, the
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on CD8 T cells to restrict self-reactivity. LNSCs can drive the CD4 T cell tolerance by the presentation of the peptide-MHCII complexes, which they acquired from the DCs. On the other hand, LECs can serve as a self-antigen reservoir and can transport self-antigens to DCs to direct self-peptide-MHCII
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Ignorance can be seen in situations where there is not a high enough concentration of antigen to trigger activation. The intrinsic mechanism of ignorance is when the affinity of TCR to antigen is too low to elicit T cell activation. There is also an extrinsic mechanism. Antigens, which are present
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Immunopriviledged organs evolved mechanisms in which specialized tissue cells and immune cells can mount an appropriate response without disturbing the specialized tissue. Immunopathogenic disturbances are not present in a variety of specialized organs such as; the eyes, reproductive organs and the
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to activate naive T cells.  However, immature DCs (iDCs) are able to induce both CD4 and CD8 tolerance. The immunogenic potential of iDCs is weak, because of the low expression of costimulatory molecules and a modest level of MHCII. iDCs perform endocytosis and phagocytosis of foreign antigens
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Anergy is a state of functional unresponsiveness induced upon self antigen recognition. T-cells can be made non-responsive to antigens presented if the T-cell engages an MHC molecule on an antigen presenting cell (signal 1) without engagement of costimulatory molecules (signal 2). Co-stimulatory
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repertoire contains a significant portion of low-avidity self-reactive T cells. These cells can trigger an autoimmune response, and there are several mechanisms of peripheral tolerance to prevent their activation. Antigen-specific mechanisms of peripheral tolerance include persistent of T cell in
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into the nucleus is impaired. This disbalance of transcription factors in T cells results in the expression of several genes involved in forming an anergic state.  Anergic T cells show long-lasting epigenetic programming that silences effector cytokine production. Anergy is reversible and T
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When self-reactive T cells escape thymic deletion they ay enter an ignorant state. Self-reactive T cells can fail to initiate immune response after recognition of self-antigen. These T cells are not classified as dysfunctional members of the immune response, rather they are antigen-inexperienced
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of nTregs shows a high affinity for self-peptides, Induced Tregs (iTreg) develop from conventional naive helper T cells after antigen recognition in presence of TGF-β and IL-2. iTregs are enriched in the gut to establish tolerance to commensal microbiota and harmless food antigens. Regardless of
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Dependence of a particular antigen on either central or peripheral tolerance is determined by its abundance in the organism. B Cells have a lower probability that they will express cell surface markers to pose the threat of causing an autoimmune attack. Peripheral tolerance of B cells is largely
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Split tolerance describes how some antigens can trigger an immune response in one aspect of the immune system and the same antigen could not trigger a response in another set of immune cells. Since many pathways of immunity are interdependent, they do not all need to be tolerized. For example,
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activation after tonic signaling, meaning that T cells may be constitutively activated when not in the presence of a ligand. After antigen exposure and costimulation, naive T cells start the process called quiescence exit, which results in proliferation and effector differentiation.
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their origin, once present Tregs use several different mechanisms to suppress autoimmune reactions. These include depletion of IL-2 from the environment, secretion of anti-inflammatory cytokines IL-10, TGF-β and IL-35 and induction of apoptosis of effector cells.
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interaction. Cell death can be mediated by intrinsic of extrinsic methods as mentioned. In most instances there is an up regulation of death markers or the presence of Bcl-2 proteins, which are proteins that are essential in facilitating programmed cell death.
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T cells can overcome ignorance through a sufficient signal from signaling molecules (cytokines, infection, inflammatory stimuli, etc.) and induce an autoimmune response. In the inflammatory context, T cells can override ignorance and induce autoimmune disease.
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As cells exit a quiescent state they will up regulate enzymes that are responsible for production of essential pathways (nucleic acids, proteins, carbohydrates, etc.). At this stage the T cell will enter the cell cycle and continue to be metabolically active.
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Self reactive cells are subject to clonal deletion or clonal diversion. Both processes of peripheral tolerance control the presence and production of self reactive immune cells. Deletion of self-reactive T cells in the thymus is only 60-70% efficient, and
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in generally low numbers, can´t stimulate T cells sufficiently. Additionally, there are anatomical barriers that prohibit the activation of these T cells. These specialized mechanisms ensuring ignorance by the immune system have developed in so-called
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After T cell response to co-stimulation-deficient antigen, a minor population of T cells develop anergy and a large proportion of T cells are rapidly lost by apoptosis. This cell death can be mediated by intrinsic pro-apoptotic family member
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Tregs are the central mediators of immune suppression and they play a key role in maintaining peripheral tolerance. The master regulator of Treg phenotype and function is Foxp3. Natural Tregs (nTregs) are generated in the thymus during the
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Before release into the periphery T cells are subjected to thymic deletion if they prove to have the capacity to react with self. Peripheral deletion is the disposal of potential self reactive T cells that escaped thymic deletion.
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Malhotra, Deepali; Linehan, Jonathan L; Dileepan, Thamotharampillai; Lee, You Jeong; Purtha, Whitney E; Lu, Jennifer V; Nelson, Ryan W; Fife, Brian T; Orr, Harry T; Anderson, Mark S; Hogquist, Kristin A; Jenkins, Marc K (2016).
168:(IDO) to prevent T cell proliferation. Retinoic acid is secreted to support iTreg differentiation, too. Nonetheless, upon maturation (for example during the infection) DCs largely lose their tolerogenic capabilities. 1142:
Fletcher, Anne L.; Lukacs-Kornek, Veronika; Reynoso, Erika D.; Pinner, Sophie E.; Bellemare-Pelletier, Angelique; Curry, Mark S.; Collier, Ai-Ris; Boyd, Richard L.; Turley, Shannon J. (2010-04-12).
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down regulation of negative regulators increases T cell activation. Premature and over activation of T cells can lead to harmful down stream responses and possibly trigger an autoimmune response.
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central nervous system. These areas are protected by several mechanisms: Fas-ligand expression binds Fas on lymphocytes inducing apoptosis, anti-inflammatory cytokines (including TGF-beta and
221:, low affinity self-reactive T cells continuously escape to the immune periphery. Therefore, additional mechanisms exist to prevent self-reactive and unrestained T cells responses. 1314:
Dubrot, Juan; Duraes, Fernanda V.; Potin, Lambert; Capotosti, Francesca; Brighouse, Dale; Suter, Tobias; LeibundGut-Landmann, Salomé; Garbi, Natalio; Reith, Walter (2014-06-02).
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Cohen, Jarish N.; Guidi, Cynthia J.; Tewalt, Eric F.; Qiao, Hui; Rouhani, Sherin J.; Ruddell, Alanna; Farr, Andrew G.; Tung, Kenneth S.; Engelhard, Victor H. (2010-04-12).
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Aside from dendritic cells, additional cell populations were identified that are able to induce antigen-specific T cell tolerance. These are mainly the members of
84:(DCs) participate in the negative selection of autoreactive T cells in the thymus, but they also mediate peripheral immune tolerance through several mechanisms. 378: 80:. Tregs, which are also generated during thymic T cell development, further suppress the effector functions of conventional lymphocytes in the periphery. 1906: 237:
and they have low metabolic, transcriptional and translational activities, but still retain the capacity to enter the cell cycle. Quiescence can prevent
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determine the eventual fate of the tolerized T cell.  There are also extrinsic mechanisms of deletion mediated by the cytotoxic activity of
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naive cells that will remain in circulation. These cells remain the ability to become activated if in the presence of the correct stimuli.
1144:"Lymph node fibroblastic reticular cells directly present peripheral tissue antigen under steady-state and inflammatory conditions" 1899: 1316:"Lymph node stromal cells acquire peptide–MHCII complexes from dendritic cells and induce antigen-specific CD4+ T cell tolerance" 998:"Immunomodulatory Functions of BTLA and HVEM Govern Induction of Extrathymic Regulatory T Cells and Tolerance by Dendritic Cells" 1201:"Lymph node–resident lymphatic endothelial cells mediate peripheral tolerance via Aire-independent direct antigen presentation" 127:
DCs are a major cell population responsible for the initiation of the adaptive immune response. They present short peptides on
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Cretney, Erika; Kallies, Axel; Nutt, Stephen L. (2013). "Differentiation and function of Foxp3+ effector regulatory T cells".
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Macián, Fernando; Garcı́a-Cózar, Francisco; Im, Sin-Hyeog; Horton, Heidi F.; Byrne, Michael C.; Rao, Anjana (2002-06-14).
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quiescence, ignorance of antigen and direct inactivation of effector T cells by either clonal deletion, conversion to
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Kanamori, Mitsuhiro; Nakatsukasa, Hiroko; Okada, Masahiro; Lu, Qianjin; Yoshimura, Akihiko (2016-11-01).
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mediated by B cell dependence on T cell help. However, B cell peripheral tolerance is much less studied.
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Although the majority of self-reactive T cell clones are deleted in the thymus by the mechanisms of
180:(LNSCs). LNSCs are generally divided into several subpopulations based on the expression of gp38 ( 55:. Peripheral tolerance can also serve a purpose in preventing an immune response to harmless food 2242: 2000: 1850: 177: 404:
Soyer, O. U.; Akdis, M.; Ring, J.; Behrendt, H.; Crameri, R.; Lauener, R.; Akdis, C. A. (2013).
2335: 2264: 1982: 1918: 233:, they are in a quiescent state. That means they are in the non-proliferative, G0 stage of the 44: 2211: 2067: 2045: 1603: 965: 948: 2228: 2072: 1996: 1048:
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cells can recover their functional responsiveness in the absence of the antigen.  
139:, DCs start the secretion of proinflammatory cytokines, express costimulatory molecules 2108: 1789: 1727: 1694: 1670: 1645: 1579: 1544: 1522: 1462: 1405: 1348: 1296: 1233: 1176: 1084: 1049: 1022: 997: 921: 888: 817: 784: 760: 735: 707: 672: 612: 564: 495: 462: 443: 131:, which are recognized by specific TCR. After encountering an antigen with recognition 52: 1866: 1768: 1751: 2156: 1922: 1870: 1831: 1781: 1773: 1732: 1714: 1675: 1623: 1584: 1526: 1514: 1506: 1467: 1449: 1410: 1392: 1353: 1335: 1300: 1288: 1280: 1238: 1220: 1181: 1163: 1124: 1089: 1071: 1027: 978: 970: 926: 908: 869: 861: 822: 804: 765: 712: 694: 650: 604: 568: 556: 548: 528: 500: 482: 435: 427: 384: 218: 73: 32: 1793: 1486: 1260: 447: 2276: 2216: 2188: 2183: 2151: 2138: 2128: 1862: 1823: 1763: 1722: 1706: 1665: 1657: 1615: 1574: 1564: 1556: 1498: 1457: 1441: 1429: 1400: 1384: 1343: 1327: 1272: 1228: 1212: 1171: 1155: 1116: 1079: 1061: 1017: 1009: 960: 916: 900: 853: 812: 796: 755: 747: 702: 684: 642: 616: 596: 540: 490: 474: 417: 319: 264: 28: 1445: 349:
tolerized T cells will not activate auto-reactive B cells. Without this help from
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is a crucial molecule for DCs mediated Treg conversion. Tolerogenic DCs express
2198: 2143: 2084: 2004: 1977: 544: 529:"Rethinking peripheral T cell tolerance: checkpoints across a T cell's journey" 333: 81: 1502: 1276: 904: 2329: 2166: 2055: 1835: 1777: 1718: 1710: 1661: 1627: 1510: 1453: 1396: 1339: 1284: 1224: 1167: 1120: 1075: 1066: 1050:"Tolerance through Education: How Tolerogenic Dendritic Cells Shape Immunity" 974: 912: 865: 857: 808: 698: 689: 646: 552: 486: 431: 350: 77: 1849:
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Removal of autoreactive T and B cells outside of the primary lymphoid organs
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mediated costimulation of T cells after TCR antigen recognition.  
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to directly induce apoptosis of responding T cells. They also produce
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signaling in T cells and translocation of transcription factor
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into the nucleus. In the absence of costimulation, there is no
230: 112: 40: 36: 1261:"Lymph node stromal cells: cartographers of the immune system" 1047: 673:"Mechanisms of Tolerance Induction by Dendritic Cells In Vivo" 311: 197: 193: 161: 1752:"Transcriptional Mechanisms Underlying Lymphocyte Tolerance" 1487:"Metabolic coordination of T cell quiescence and activation" 1749: 1644:
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T and B cells which escaped central tolerance do not cause
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is a surface molecule present on Tregs which can prevent
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Intrinsic mechanisms of T cell peripheral tolerance
1545:"Cellular Mechanisms and Regulation of Quiescence" 1258: 632: 1800: 1602:Parish, Ian A; Heath, William R (February 2008). 1542: 1484: 670: 406:"Mechanisms of peripheral tolerance to allergens" 35:. It takes place in the immune periphery (after 2327: 526: 1692: 1900: 671:Hasegawa, Hitoshi; Matsumoto, Takuya (2018). 461:Xing, Yan; Hogquist, Kristin A. (June 2012). 1371:Urbán, Noelia; Cheung, Tom H. (2021-02-01). 1106: 460: 1601: 1370: 1907: 1893: 1427: 889:"Regulatory T cells in autoimmune disease" 467:Cold Spring Harbor Perspectives in Biology 463:"T-Cell Tolerance: Central and Peripheral" 326: 1767: 1726: 1669: 1578: 1568: 1461: 1404: 1347: 1232: 1175: 1083: 1065: 1021: 964: 920: 816: 759: 706: 688: 494: 421: 372: 370: 368: 366: 966:10.1146/annurev.immunol.21.120601.141040 188:molecules. LNSCs lack expression of the 1428:Ajina, Adam; Maher, John (2018-09-01). 782: 586: 376: 2328: 1639: 1637: 1538: 1536: 363: 296: 137:pathogen-associated molecular patterns 47:). Its main purpose is to ensure that 1888: 1254: 1252: 1043: 1041: 942: 940: 353:, the B cells will not be activated. 96: 728: 726: 666: 664: 628: 626: 582: 580: 578: 522: 520: 518: 516: 514: 92:Cells mediating peripheral tolerance 1634: 1533: 13: 1249: 1038: 937: 343: 122: 14: 2352: 723: 661: 623: 575: 511: 1320:Journal of Experimental Medicine 1205:Journal of Experimental Medicine 1148:Journal of Experimental Medicine 336:) and blood-tissue-barrier with 205:presentation to CD4 T cells. In 1842: 1743: 1686: 1595: 1478: 1421: 1364: 1307: 1192: 1135: 1100: 989: 880: 833: 377:Janeway, Charles (2001-01-01). 2234:Immunoglobulin class switching 776: 454: 397: 1: 1867:10.1016/S0198-8859(96)00288-1 1769:10.1016/S0092-8674(02)00767-5 1608:Immunology & Cell Biology 1446:10.1158/1535-7163.mct-17-1097 1434:Molecular Cancer Therapeutics 949:"Tolerogenic dendritic cells" 356: 224: 1561:10.1016/j.devcel.2020.09.029 1014:10.1016/j.immuni.2016.10.008 783:Getahun, Andrew (May 2022). 253: 229:When naive T cells exit the 7: 1828:10.4049/jimmunol.174.7.4098 953:Annual Review of Immunology 479:10.1101/cshperspect.a006957 340:between endothelial cells. 166:indoleamine 2,3-dioxygenase 10: 2357: 2063:Polyclonal B cell response 545:10.1038/s41577-020-00454-2 2297: 2255: 2197: 2098: 2028: 1936: 1929: 1816:The Journal of Immunology 1503:10.1038/s41577-019-0203-y 1491:Nature Reviews Immunology 1277:10.1038/s41590-020-0635-3 905:10.1038/s41590-018-0120-4 533:Nature Reviews Immunology 274: 1711:10.4049/jimmunol.1602031 1662:10.1016/j.it.2013.10.001 1121:10.1016/j.it.2011.10.006 1067:10.3389/fimmu.2017.01764 858:10.1016/j.it.2016.08.012 690:10.3389/fimmu.2018.00350 647:10.1016/j.it.2012.11.002 265:immune privileged organs 178:lymph node stromal cells 171: 76:(Tregs) or induction of 27:is the second branch of 1054:Frontiers in Immunology 677:Frontiers in Immunology 327:Immunoprivileged organs 45:primary lymphoid organs 29:immunological tolerance 2177:Tolerance in pregnancy 1919:adaptive immune system 1620:10.1038/sj.icb.7100161 207:mesenteric lymph nodes 2212:Somatic hypermutation 2046:Polyclonal antibodies 2041:Monoclonal antibodies 1699:Journal of Immunology 789:Immunological Reviews 2229:Junctional diversity 1997:Antigen presentation 1650:Trends in Immunology 1332:10.1084/jem.20132000 1217:10.1084/jem.20092465 1160:10.1084/jem.20092642 1109:Trends in Immunology 846:Trends in Immunology 635:Trends in Immunology 190:autoimmune regulator 25:peripheral tolerance 2224:V(D)J recombination 2207:Affinity maturation 1959:Antigenic variation 297:Peripheral deletion 147:and migrate to the 1549:Developmental Cell 1389:10.1242/dev.165084 380:Immunobiology Five 104:negative selection 97:Regulatory T cells 74:regulatory T cells 53:autoimmune disease 2323: 2322: 2251: 2250: 2001:professional APCs 1265:Nature Immunology 893:Nature Immunology 801:10.1111/imr.13070 740:Nature Immunology 589:Nature Immunology 423:10.1111/all.12085 219:central tolerance 33:central tolerance 2348: 2217:Clonal selection 2189:Immune privilege 2184:Immunodeficiency 2139:Cross-reactivity 2129:Hypersensitivity 1934: 1933: 1909: 1902: 1895: 1886: 1885: 1879: 1878: 1855:Human Immunology 1846: 1840: 1839: 1822:(7): 4098–4104. 1807: 1798: 1797: 1771: 1747: 1741: 1740: 1730: 1705:(7): 2527–2533. 1690: 1684: 1683: 1673: 1641: 1632: 1631: 1599: 1593: 1592: 1582: 1572: 1540: 1531: 1530: 1482: 1476: 1475: 1465: 1440:(9): 1795–1815. 1425: 1419: 1418: 1408: 1383:(3): dev165084. 1368: 1362: 1361: 1351: 1326:(6): 1153–1166. 1311: 1305: 1304: 1256: 1247: 1246: 1236: 1196: 1190: 1189: 1179: 1139: 1133: 1132: 1104: 1098: 1097: 1087: 1069: 1045: 1036: 1035: 1025: 1008:(5): 1066–1077. 993: 987: 986: 968: 944: 935: 934: 924: 884: 878: 877: 837: 831: 830: 820: 780: 774: 773: 763: 730: 721: 720: 710: 692: 668: 659: 658: 630: 621: 620: 584: 573: 572: 524: 509: 508: 498: 458: 452: 451: 425: 401: 395: 394: 374: 2356: 2355: 2351: 2350: 2349: 2347: 2346: 2345: 2326: 2325: 2324: 2319: 2293: 2247: 2193: 2172:Clonal deletion 2100: 2094: 2024: 1925: 1913: 1883: 1882: 1847: 1843: 1808: 1801: 1748: 1744: 1691: 1687: 1642: 1635: 1600: 1596: 1570:1721.1/138195.2 1541: 1534: 1483: 1479: 1426: 1422: 1369: 1365: 1312: 1308: 1257: 1250: 1197: 1193: 1140: 1136: 1105: 1101: 1046: 1039: 994: 990: 945: 938: 885: 881: 852:(11): 803–811. 838: 834: 781: 777: 752:10.1038/ni.3327 731: 724: 669: 662: 631: 624: 601:10.1038/ni.1817 585: 576: 525: 512: 459: 455: 402: 398: 391: 383:. Garland Pub. 375: 364: 359: 346: 344:Split tolerance 338:tight junctions 329: 318:/FasL or TRAIL/ 299: 277: 256: 227: 215: 196:. LECs express 174: 125: 123:Tolerogenic DCs 99: 94: 82:Dendritic cells 17: 12: 11: 5: 2354: 2344: 2343: 2338: 2321: 2320: 2318: 2317: 2312: 2307: 2301: 2299: 2295: 2294: 2292: 2291: 2286: 2285: 2284: 2274: 2273: 2272: 2261: 2259: 2253: 2252: 2249: 2248: 2246: 2245: 2236: 2231: 2226: 2221: 2220: 2219: 2214: 2203: 2201: 2199:Immunogenetics 2195: 2194: 2192: 2191: 2186: 2181: 2180: 2179: 2174: 2169: 2164: 2159: 2147: 2146: 2144:Co-stimulation 2141: 2136: 2131: 2126: 2121: 2116: 2111: 2104: 2102: 2096: 2095: 2093: 2092: 2087: 2085:Immune complex 2081: 2080: 2075: 2070: 2065: 2060: 2059: 2058: 2053: 2048: 2043: 2032: 2030: 2026: 2025: 2023: 2022: 2017: 2012: 2007: 2005:Dendritic cell 1993: 1992: 1987: 1986: 1985: 1983:Conformational 1980: 1969: 1968: 1963: 1962: 1961: 1956: 1951: 1940: 1938: 1931: 1927: 1926: 1912: 1911: 1904: 1897: 1889: 1881: 1880: 1861:(2): 138–143. 1841: 1799: 1762:(6): 719–731. 1742: 1685: 1633: 1614:(2): 146–152. 1594: 1555:(3): 259–271. 1532: 1477: 1420: 1363: 1306: 1271:(4): 369–380. 1248: 1211:(4): 681–688. 1191: 1154:(4): 689–697. 1134: 1115:(6): 264–270. 1099: 1037: 988: 959:(1): 685–711. 936: 899:(7): 665–673. 879: 832: 775: 746:(2): 187–195. 722: 660: 622: 574: 539:(4): 257–267. 510: 473:(6): a006957. 453: 416:(2): 161–170. 396: 389: 361: 360: 358: 355: 345: 342: 334:interleukin 10 328: 325: 298: 295: 276: 273: 255: 252: 226: 223: 214: 211: 173: 170: 124: 121: 98: 95: 93: 90: 15: 9: 6: 4: 3: 2: 2353: 2342: 2339: 2337: 2336:Immune system 2334: 2333: 2331: 2316: 2313: 2311: 2308: 2306: 2303: 2302: 2300: 2296: 2290: 2287: 2283: 2280: 2279: 2278: 2275: 2271: 2268: 2267: 2266: 2263: 2262: 2260: 2258: 2254: 2244: 2240: 2237: 2235: 2232: 2230: 2227: 2225: 2222: 2218: 2215: 2213: 2210: 2209: 2208: 2205: 2204: 2202: 2200: 2196: 2190: 2187: 2185: 2182: 2178: 2175: 2173: 2170: 2168: 2167:Clonal anergy 2165: 2163: 2160: 2158: 2155: 2154: 2153: 2149: 2148: 2145: 2142: 2140: 2137: 2135: 2132: 2130: 2127: 2125: 2122: 2120: 2117: 2115: 2112: 2110: 2106: 2105: 2103: 2097: 2091: 2088: 2086: 2083: 2082: 2079: 2076: 2074: 2071: 2069: 2066: 2064: 2061: 2057: 2056:Microantibody 2054: 2052: 2049: 2047: 2044: 2042: 2039: 2038: 2037: 2034: 2033: 2031: 2027: 2021: 2018: 2016: 2013: 2011: 2008: 2006: 2002: 1998: 1995: 1994: 1991: 1988: 1984: 1981: 1979: 1976: 1975: 1974: 1971: 1970: 1967: 1964: 1960: 1957: 1955: 1952: 1950: 1947: 1946: 1945: 1942: 1941: 1939: 1935: 1932: 1928: 1924: 1920: 1917: 1910: 1905: 1903: 1898: 1896: 1891: 1890: 1887: 1876: 1872: 1868: 1864: 1860: 1856: 1852: 1845: 1837: 1833: 1829: 1825: 1821: 1817: 1813: 1806: 1804: 1795: 1791: 1787: 1783: 1779: 1775: 1770: 1765: 1761: 1757: 1753: 1746: 1738: 1734: 1729: 1724: 1720: 1716: 1712: 1708: 1704: 1700: 1696: 1689: 1681: 1677: 1672: 1667: 1663: 1659: 1655: 1651: 1647: 1640: 1638: 1629: 1625: 1621: 1617: 1613: 1609: 1605: 1598: 1590: 1586: 1581: 1576: 1571: 1566: 1562: 1558: 1554: 1550: 1546: 1539: 1537: 1528: 1524: 1520: 1516: 1512: 1508: 1504: 1500: 1496: 1492: 1488: 1481: 1473: 1469: 1464: 1459: 1455: 1451: 1447: 1443: 1439: 1435: 1431: 1424: 1416: 1412: 1407: 1402: 1398: 1394: 1390: 1386: 1382: 1378: 1374: 1367: 1359: 1355: 1350: 1345: 1341: 1337: 1333: 1329: 1325: 1321: 1317: 1310: 1302: 1298: 1294: 1290: 1286: 1282: 1278: 1274: 1270: 1266: 1262: 1255: 1253: 1244: 1240: 1235: 1230: 1226: 1222: 1218: 1214: 1210: 1206: 1202: 1195: 1187: 1183: 1178: 1173: 1169: 1165: 1161: 1157: 1153: 1149: 1145: 1138: 1130: 1126: 1122: 1118: 1114: 1110: 1103: 1095: 1091: 1086: 1081: 1077: 1073: 1068: 1063: 1059: 1055: 1051: 1044: 1042: 1033: 1029: 1024: 1019: 1015: 1011: 1007: 1003: 999: 992: 984: 980: 976: 972: 967: 962: 958: 954: 950: 943: 941: 932: 928: 923: 918: 914: 910: 906: 902: 898: 894: 890: 883: 875: 871: 867: 863: 859: 855: 851: 847: 843: 836: 828: 824: 819: 814: 810: 806: 802: 798: 794: 790: 786: 779: 771: 767: 762: 757: 753: 749: 745: 741: 737: 729: 727: 718: 714: 709: 704: 700: 696: 691: 686: 682: 678: 674: 667: 665: 656: 652: 648: 644: 640: 636: 629: 627: 618: 614: 610: 606: 602: 598: 594: 590: 583: 581: 579: 570: 566: 562: 558: 554: 550: 546: 542: 538: 534: 530: 523: 521: 519: 517: 515: 506: 502: 497: 492: 488: 484: 480: 476: 472: 468: 464: 457: 449: 445: 441: 437: 433: 429: 424: 419: 415: 411: 407: 400: 392: 390:9780815336426 386: 382: 381: 373: 371: 369: 367: 362: 354: 352: 341: 339: 335: 324: 321: 317: 313: 309: 303: 294: 291: 287: 283: 272: 268: 266: 260: 251: 247: 243: 240: 236: 232: 222: 220: 210: 208: 203: 199: 195: 191: 187: 183: 179: 169: 167: 163: 159: 155: 150: 146: 142: 138: 134: 130: 120: 118: 114: 109: 105: 89: 85: 83: 79: 75: 70: 64: 62: 58: 54: 50: 49:self-reactive 46: 42: 38: 34: 30: 26: 22: 2161: 2134:Inflammation 2119:Alloimmunity 2114:Autoimmunity 2099:Immunity vs. 2051:Autoantibody 1949:Superantigen 1858: 1854: 1844: 1819: 1815: 1759: 1755: 1745: 1702: 1698: 1688: 1656:(2): 51–60. 1653: 1649: 1611: 1607: 1597: 1552: 1548: 1497:(1): 55–70. 1494: 1490: 1480: 1437: 1433: 1423: 1380: 1376: 1366: 1323: 1319: 1309: 1268: 1264: 1208: 1204: 1194: 1151: 1147: 1137: 1112: 1108: 1102: 1057: 1053: 1005: 1001: 991: 956: 952: 896: 892: 882: 849: 845: 835: 795:(1): 27–42. 792: 788: 778: 743: 739: 680: 676: 641:(2): 74–80. 638: 634: 595:(1): 21–27. 592: 588: 536: 532: 470: 466: 456: 413: 409: 399: 379: 347: 330: 304: 300: 278: 269: 261: 257: 248: 244: 239:naive T cell 228: 216: 175: 126: 100: 86: 69:naive T cell 65: 43:egress from 24: 18: 2257:Lymphocytes 1916:Lymphocytic 1377:Development 351:CD4 T cells 149:lymph nodes 2341:Immunology 2330:Categories 2298:Substances 2162:Peripheral 2150:Inaction: 2029:Antibodies 2010:Macrophage 1923:complement 357:References 235:cell cycle 225:Quiescence 200:to engage 21:immunology 2315:Cytolysin 2305:Cytokines 2152:Tolerance 2101:tolerance 2020:Immunogen 1836:0022-1767 1778:0092-8674 1719:0022-1767 1628:0818-9641 1527:199542651 1511:1474-1741 1454:1535-7163 1397:0950-1991 1340:0022-1007 1301:214618784 1285:1529-2916 1225:0022-1007 1168:0022-1007 1076:1664-3224 975:0732-0582 913:1529-2916 866:1471-4906 809:0105-2896 699:1664-3224 569:224808870 553:1474-1741 487:1943-0264 432:1398-9995 254:Ignorance 61:allergens 2265:Cellular 2109:Immunity 2107:Action: 2090:Paratope 2078:Idiotype 2068:Allotype 2036:Antibody 1990:Mimotope 1954:Allergen 1937:Antigens 1930:Lymphoid 1794:15599878 1786:12086671 1737:28320913 1680:24210163 1589:33171109 1519:31406325 1472:30181329 1415:33558315 1358:24842370 1293:32205888 1243:20308365 1186:20308362 1129:22153930 1094:29375543 1060:: 1764. 1032:27793593 1002:Immunity 983:12615891 931:29925983 874:27623114 827:35128676 770:26726812 717:29535726 655:23219401 609:20016506 561:33077935 505:22661634 448:24008758 440:23253293 57:antigens 31:, after 2310:Opsonin 2289:NK cell 2277:Humoral 2157:Central 2124:Allergy 2073:Isotype 1973:Epitope 1944:Antigen 1875:9077562 1728:5363282 1671:3946600 1580:7665062 1463:6130819 1406:7888710 1349:4042642 1234:2856027 1177:2856033 1085:5770648 1023:5112132 922:7882196 818:8986582 761:4718891 708:5834484 683:: 350. 617:9612138 496:3367546 410:Allergy 41:B cells 2282:B cell 2270:T cell 2015:B cell 1978:Linear 1966:Hapten 1873:  1834:  1792:  1784:  1776:  1735:  1725:  1717:  1678:  1668:  1626:  1587:  1577:  1525:  1517:  1509:  1470:  1460:  1452:  1413:  1403:  1395:  1356:  1346:  1338:  1299:  1291:  1283:  1241:  1231:  1223:  1184:  1174:  1166:  1127:  1092:  1082:  1074:  1030:  1020:  981:  973:  929:  919:  911:  872:  864:  825:  815:  807:  768:  758:  715:  705:  697:  653:  615:  607:  567:  559:  551:  503:  493:  485:  446:  438:  430:  387:  320:TRAILR 275:Anergy 231:thymus 133:danger 113:CTLA-4 78:anergy 1790:S2CID 1523:S2CID 1297:S2CID 613:S2CID 565:S2CID 444:S2CID 312:BCL-2 198:PD-L1 194:Deaf1 172:LNSCs 162:TRAIL 129:MHCII 1921:and 1871:PMID 1832:ISSN 1782:PMID 1774:ISSN 1756:Cell 1733:PMID 1715:ISSN 1676:PMID 1624:ISSN 1585:PMID 1515:PMID 1507:ISSN 1468:PMID 1450:ISSN 1411:PMID 1393:ISSN 1354:PMID 1336:ISSN 1289:PMID 1281:ISSN 1239:PMID 1221:ISSN 1182:PMID 1164:ISSN 1125:PMID 1090:PMID 1072:ISSN 1028:PMID 979:PMID 971:ISSN 927:PMID 909:ISSN 870:PMID 862:ISSN 823:PMID 805:ISSN 766:PMID 713:PMID 695:ISSN 651:PMID 605:PMID 557:PMID 549:ISSN 501:PMID 483:ISSN 436:PMID 428:ISSN 385:ISBN 290:AP-1 286:MAPK 282:NFAT 202:PD-1 186:MHCI 182:PDPN 160:and 158:FasL 154:BTLA 145:CD86 143:and 141:CD80 117:CD28 59:and 39:and 2243:HLA 2239:MHC 1863:doi 1824:doi 1820:174 1764:doi 1760:109 1723:PMC 1707:doi 1703:198 1666:PMC 1658:doi 1616:doi 1575:PMC 1565:hdl 1557:doi 1499:doi 1458:PMC 1442:doi 1401:PMC 1385:doi 1381:148 1344:PMC 1328:doi 1324:211 1273:doi 1229:PMC 1213:doi 1209:207 1172:PMC 1156:doi 1152:207 1117:doi 1080:PMC 1062:doi 1018:PMC 1010:doi 961:doi 917:PMC 901:doi 854:doi 813:PMC 797:doi 793:307 756:PMC 748:doi 703:PMC 685:doi 643:doi 597:doi 541:doi 491:PMC 475:doi 418:doi 316:Fas 308:BIM 135:or 108:TCR 19:In 2332:: 2003:: 1869:. 1859:52 1857:. 1853:. 1830:. 1818:. 1814:. 1802:^ 1788:. 1780:. 1772:. 1758:. 1754:. 1731:. 1721:. 1713:. 1701:. 1697:. 1674:. 1664:. 1654:35 1652:. 1648:. 1636:^ 1622:. 1612:86 1610:. 1606:. 1583:. 1573:. 1563:. 1553:55 1551:. 1547:. 1535:^ 1521:. 1513:. 1505:. 1495:20 1493:. 1489:. 1466:. 1456:. 1448:. 1438:17 1436:. 1432:. 1409:. 1399:. 1391:. 1379:. 1375:. 1352:. 1342:. 1334:. 1322:. 1318:. 1295:. 1287:. 1279:. 1269:21 1267:. 1263:. 1251:^ 1237:. 1227:. 1219:. 1207:. 1203:. 1180:. 1170:. 1162:. 1150:. 1146:. 1123:. 1113:33 1111:. 1088:. 1078:. 1070:. 1056:. 1052:. 1040:^ 1026:. 1016:. 1006:45 1004:. 1000:. 977:. 969:. 957:21 955:. 951:. 939:^ 925:. 915:. 907:. 897:19 895:. 891:. 868:. 860:. 850:37 848:. 844:. 821:. 811:. 803:. 791:. 787:. 764:. 754:. 744:17 742:. 738:. 725:^ 711:. 701:. 693:. 679:. 675:. 663:^ 649:. 639:34 637:. 625:^ 611:. 603:. 593:11 591:. 577:^ 563:. 555:. 547:. 537:21 535:. 531:. 513:^ 499:. 489:. 481:. 469:. 465:. 442:. 434:. 426:. 414:68 412:. 408:. 365:^ 267:. 106:. 63:. 23:, 2241:/ 1999:/ 1908:e 1901:t 1894:v 1877:. 1865:: 1838:. 1826:: 1796:. 1766:: 1739:. 1709:: 1682:. 1660:: 1630:. 1618:: 1591:. 1567:: 1559:: 1529:. 1501:: 1474:. 1444:: 1417:. 1387:: 1360:. 1330:: 1303:. 1275:: 1245:. 1215:: 1188:. 1158:: 1131:. 1119:: 1096:. 1064:: 1058:8 1034:. 1012:: 985:. 963:: 933:. 903:: 876:. 856:: 829:. 799:: 772:. 750:: 719:. 687:: 681:9 657:. 645:: 619:. 599:: 571:. 543:: 507:. 477:: 471:4 450:. 420:: 393:. 37:T

Index

immunology
immunological tolerance
central tolerance
T
B cells
primary lymphoid organs
self-reactive
autoimmune disease
antigens
allergens
naive T cell
regulatory T cells
anergy
Dendritic cells
negative selection
TCR
CTLA-4
CD28
MHCII
danger
pathogen-associated molecular patterns
CD80
CD86
lymph nodes
BTLA
FasL
TRAIL
indoleamine 2,3-dioxygenase
lymph node stromal cells
PDPN

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