CD4+CD25+ regulatory T cells : origin, function and therapeutic potential
著者
書誌事項
CD4+CD25+ regulatory T cells : origin, function and therapeutic potential
（Current topics in microbiology and immunology, v. 293）
Springer, c2005
大学図書館所蔵 全10件
注記
Includes bibliographical references and index
内容説明・目次
内容説明
The vertebrate immune system defends the organism against invading pathogens while at the same time being self-tolerant to the body's own constituentsthuspreservingitsintegrity. Multiplemechanismsactinconcert to ensure self-tolerance. During intrathymic development, the nascent T cell repertoire is purged from autoreactive T cells via negative selection, a process also known as recessive tolerance. Ridding of self-reactivity, however,isnotcomplete,asattestedbythepresenceofself-reactiveTcells intheperipheralTcellrepertoire. Hence,additionaltolerancemechanisms, collectively referred to as dominant tolerance, have been postulated on theoreticalgrounds(seethechapterbyA. Coutinhoetal. inthisvolume)and experimentalprooffortheirexistencehadbeenrepeatedlyclaimedinthepast 40years. Whilesomeoftheseclaims,largelybasedoninvitroexperiments, laterfellintodisrepute(i. e. ,theinfamousCD8suppressorcellsexpressingI-J molecules),concurrent,butlesswellpublicizedstringsofresearch,provided unremitting evidence for dominant tolerance mechanisms.
These include the postnatal thymectomy model pioneered by Nishizuka and Sakakura in 1969, the dominant tolerance model in chicken and quail chimeras introducedbyleDouarinandcolleagues,andstudiesoninfectioustolerance by the Waldmann laboratory. A breakthrough in this ?eld was achieved by the identi?cation and isolation by Sakaguchi's and Shevach's groups of + + aCD4 CD25 TcellsubsetexertingsuppressiononeffectorTcellsbothin vitroandinvivo. Thisinstigatedanavalancheofpublicationsonsuppressor Tcells. Whilelargelyoverlookedforsomanyyears,thereisnowhardlyany aspectofimmunitythatdoesnotseemtobeaffectedbysuppressorTcells. This volume will hardly be more than a snapshot in thisfast-moving ?eld, yetwehopethatitwillofferinspirationandorientationtothescientistwho wouldliketoenterthis?eld. To date, many different cells have been described that can suppress + + other cells of the immune system: CD4 CD25 regulatory T cells (Treg), + ? CD4 CD25 regulatory T cells, T regulatory 1 cells (Tr1), T-helper 3 cells + ? (Th3),CD8 CD28 Tcells,NKTcells,aswellastolerogenicdendriticcells. Suppressive CD4 T cells fall at least into two categories.
So called natural VI Preface + + CD4 CD25 Tregformpartoftheintra-thymicallyselectedTcellrepertoire andapparentlyconstituteadistinctlineage. Incontrast,"adaptive"regulatory Tcellsareinstructedintheperipherytobecomesuppressivecells,theyform + + amoreheterogeneousgroupincludingCD4 CD25 Treg,Tr1,andTh3cells. As natural Treg are so far the best characterized entity, the ?rst three contributionsofthisvolume(C. Cozzoetal. ,C. -S. Hsiehetal. ,andL.
目次
Preface.- Selection of CD4+CD25+ Regulatory T Cells by Self-Peptides.- The Role of TCR Specificity in Naturally Arising CD25+ CD4+ Regulatory T Cell Biology.- Thymic Commitment of Regulatory T Cells Is a Pathway of TCR-Dependent Selection That 'Isolates' Repertoires Undergoing Positive or Negative Selection.- Selection and Behaviour of CD4+CD25+ T Cells in vivo: Lessons from T Cell Receptor Transgenic Models.- Migration Matters: Functional Properties of Naive- and Effector/Memory-Like Regulatory T Cell Subsets.- Peripheral Generation and Function of CD4+CD25+ Regulatory T Cells.- Dendritic Cells, Key Cells for the Induction of Regulatory T Cells?.- Autoimmune Gastritis Is a Well-Defined Autoimmune Disease Model for the Study or CD4+CD25+ T Cell-Mediated Suppresion.- Regulatory T Cells in Experimental Colitis.- Autoimmune Ovarian Disease in Day 3-Thymectomized Mice: the Neonatal Time Window, Antigen Specificity of Disease Suppression, and Genetic Control.- Regulatory T Cells in Transplantation Tolerance. Infectious Tolerance.- CD4+CD25+ Regulatory T Cells in Hematopoietic Stem Cell Transplantation.- ..................- Phenotypic and Functional Differences Between Human CD4+CD25+ and Type 1 Regulatory T Cells.- Subject Index.
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