Class switch recombination and somatic hypermutation in early mouse B cells are mediated by B cell and Toll-like receptors.

abstract：:Innate immune sensors that detect nucleic acids are attractive targets for therapeutic intervention because of their diverse roles in many disease processes. In detecting RNA and DNA from either self or non-self, nucleic acid sensors mediate the pathogenesis of many autoimmune and inflammatory conditions. Despite prom...

journal_title：Immunity

authors： McWhirter SM,Jefferies CA

更新日期：2020-07-14 00:00:00

abstract：:Activated CD8(+) T cells can differentiate into transient effector cells or long-lived memory cells. In this issue of Immunity, Joshi et al. (2007) suggest that inflammatory cytokines dictate this balance by regulating the expression of the transcription factor T-bet. ...

journal_title：Immunity

authors： Hamilton SE,Jameson SC

更新日期：2007-08-01 00:00:00

abstract：:Numerous regulatory programs have been identified that contribute to the restoration of homeostasis at the conclusion of immune responses and to safeguarding against the detrimental effects of chronic inflammation and autoimmune pathology. Malignant cells may usurp these pathways to create immunosuppressive networks t...

journal_title：Immunity

authors： Rabinovich GA,Croci DO

更新日期：2012-03-23 00:00:00

abstract：:Tissue macrophages arise during embryogenesis from yolk-sac (YS) progenitors that give rise to primitive YS macrophages. Until recently, it has been impossible to isolate or derive sufficient numbers of YS-derived macrophages for further study, but data now suggest that induced pluripotent stem cells (iPSCs) can be dr...

journal_title：Immunity

authors： Takata K,Kozaki T,Lee CZW,Thion MS,Otsuka M,Lim S,Utami KH,Fidan K,Park DS,Malleret B,Chakarov S,See P,Low D,Low G,Garcia-Miralles M,Zeng R,Zhang J,Goh CC,Gul A,Hubert S,Lee B,Chen J,Low I,Shadan NB,Lum J

更新日期：2017-07-18 00:00:00

abstract：:We previously reported that the mice deficient for SPA-1, a Rap1 GTPase-activating protein, developed hematopoietic stem cell disorders. Here, we demonstrate that SPA-1(-/-) mice show an age-dependent increase in B220(high) B1a cells producing anti-dsDNA antibody and lupus-like nephritis. SPA-1(-/-) peritoneal B1 cell...

journal_title：Immunity

authors： Ishida D,Su L,Tamura A,Katayama Y,Kawai Y,Wang SF,Taniwaki M,Hamazaki Y,Hattori M,Minato N

更新日期：2006-04-01 00:00:00

abstract：:Antibodies against the NANP repeat of circumsporozoite protein (CSP), the major surface antigen of Plasmodium falciparum (Pf) sporozoites, can protect from malaria in animal models but protective humoral immunity is difficult to induce in humans. Here we cloned and characterized rare affinity-matured human NANP-reacti...

journal_title：Immunity

authors： Triller G,Scally SW,Costa G,Pissarev M,Kreschel C,Bosch A,Marois E,Sack BK,Murugan R,Salman AM,Janse CJ,Khan SM,Kappe SHI,Adegnika AA,Mordmüller B,Levashina EA,Julien JP,Wardemann H

更新日期：2017-12-19 00:00:00

abstract：:Aire promotes the tolerization of thymocytes by inducing the expression of a battery of peripheral-tissue antigens in thymic medullary epithelial cells. We demonstrate that the cellular mechanism by which Aire exerts its tolerance-promoting function is not primarily positive selection of regulatory T cells, but rather...

journal_title：Immunity

authors： Anderson MS,Venanzi ES,Chen Z,Berzins SP,Benoist C,Mathis D

更新日期：2005-08-01 00:00:00

abstract：:For a brief period during fetal lymph node organogenesis in mice, lymph node postcapillary high endothelial venules surprisingly express the Peyer's patch addressin MAdCAM-1. This expression allows initial seeding of this incipient structure by two unusual lymphocyte populations selectively expressing the Peyer's patc...

journal_title：Immunity

authors： Mebius RE,Rennert P,Weissman IL

更新日期：1997-10-01 00:00:00

abstract：:Several experimental evidences suggested that beta1 integrin-mediated adhesion of hematopoietic stem cells (HSC) is important for their function in the bone marrow (BM). Using induced deletion of the beta1 integrin gene restricted to the hematopoietic system, we show that beta1 integrin is not essential for HSC retent...

journal_title：Immunity

authors： Brakebusch C,Fillatreau S,Potocnik AJ,Bungartz G,Wilhelm P,Svensson M,Kearney P,Körner H,Gray D,Fässler R

更新日期：2002-03-01 00:00:00

abstract：:Cognate interactions of naive T cells with antigen-presenting dendritic cells require physical cell-cell contacts leading to signal induction and T cell activation. Using a three-dimensional collagen matrix videomicroscopy model for ovalbumin peptide-specific activation of murine and oxidative mitogenesis of human T c...

journal_title：Immunity

authors： Gunzer M,Schäfer A,Borgmann S,Grabbe S,Zänker KS,Bröcker EB,Kämpgen E,Friedl P

更新日期：2000-09-01 00:00:00

abstract：:Inflammation can activate self-reactive CD8(+) T cells and induce autoimmunity. Here we show in a CD8(+) T cell-mediated model of type 1 diabetes that CD4(+)CD25(+) Treg cells prevent beta cell destruction following localized inflammation in the islets of Langerhans. These Treg cells accumulate preferentially in the p...

journal_title：Immunity

authors： Green EA,Choi Y,Flavell RA

更新日期：2002-02-01 00:00:00

abstract：:Apoptosis in response to granzyme B involves activation of caspase-dependent target cell death pathways. Herein, we show that granzyme B initiates caspase processing but cannot fully process procaspase-3 in intact Jurkat T leukemia or NT2 neuronal cells. Rather, the release from mitochondria of proapoptotic mediators ...

journal_title：Immunity

authors： Sutton VR,Wowk ME,Cancilla M,Trapani JA

更新日期：2003-03-01 00:00:00

abstract：:As humans age, their T cell repertoire becomes dominated by cells exhibiting "memory" characteristics. In this issue of Immunity, Su et al. (2013) demonstrate that a large percentage of virus-specific CD4(+) T cells also exhibit a memory phenotype in unexposed adults. ...

journal_title：Immunity

authors： Nolz JC,Harty JT

更新日期：2013-02-21 00:00:00

abstract：:Helping B cells and antibody responses is a major function of CD4+ T cells. It has been 10 years since the publication of Bcl6 as the lineage-defining transcription factor for T follicular helper (Tfh) differentiation and the requirement of Tfh cells as the specialized subset of CD4+ T cells needed for germinal center...

journal_title：Immunity

authors： Crotty S

更新日期：2019-05-21 00:00:00

abstract：:NOD-like receptors (NLRs) are increasingly implicated in regulating pathogen-sensing pathways. In this issue of Immunity, Zhang et al. (2014) describe a role for NLRC3 in regulating STING and the inflammatory response to cytosolic DNA. ...

journal_title：Immunity

authors： Mangan MS,Latz E

更新日期：2014-03-20 00:00:00

abstract：:Natural hosts for simian immunodeficiency virus (SIV) can be, and are often naturally, infected with species-specific SIVs, but do not develop acquired immunodeficiency syndrome (AIDS). These natural hosts maintain high SIV viral loads, but avoid immunodeficiency. Elucidating the mechanisms that allow natural hosts to...

journal_title：Immunity

authors： Brenchley JM,Silvestri G,Douek DC

更新日期：2010-06-25 00:00:00

abstract：:Proliferation of memory-phenotype (CD44hi) CD8+ cells induced by infectious agents can be mimicked by injection of type I interferon (IFN I) and by IFN I-inducing agents such as lipopolysaccharide and Poly I:C; such proliferation does not affect naive T cells and appears to be TCR independent. Since IFN I inhibits pro...

journal_title：Immunity

authors： Zhang X,Sun S,Hwang I,Tough DF,Sprent J

更新日期：1998-05-01 00:00:00

abstract：:Direct and indirect cytopathic mechanisms have been proposed to account for the loss of CD4+ T cells after infection with human immunodeficiency virus type 1 (HIV-1). We report here that HIV-1 infection of the human thymus in vivo results in thymocyte depletion by at least two different mechanisms. Thymocytes within m...

journal_title：Immunity

authors： Su L,Kaneshima H,Bonyhadi M,Salimi S,Kraft D,Rabin L,McCune JM

更新日期：1995-01-01 00:00:00

abstract：:Oxidative stress leads to impaired T cell activation. A central integrator of T cell activation is the actin-remodelling protein cofilin. Cofilin is activated through dephosphorylation at Ser3. Activated cofilin enables actin dynamics through severing and depolymerization of F-actin. Binding of cofilin to actin is req...

journal_title：Immunity

authors： Klemke M,Wabnitz GH,Funke F,Funk B,Kirchgessner H,Samstag Y

更新日期：2008-09-19 00:00:00

abstract：:The heat shock (HS) response is a universal response activated after exposure to various stimuli. The major HS protein (HSP) is the 72 kDa HSP70 with strong homology in different eukaryotic species. We demonstrate that HS treatment of mice leads to a strong induction of HSP70 in several organs and confers significant ...

journal_title：Immunity

authors： Van Molle W,Wielockx B,Mahieu T,Takada M,Taniguchi T,Sekikawa K,Libert C

更新日期：2002-05-01 00:00:00

abstract：:Adaptive immune responses begin when naive CD4(+) T cells engage peptide+major histocompatibility complex class II and co-stimulatory molecules on antigen-presenting cells (APCs). Notch signaling can influence effector functions in differentiated CD4(+) T helper and T regulatory cells. Whether and how ligand-induced N...

journal_title：Immunity

authors： Laky K,Evans S,Perez-Diez A,Fowlkes BJ

更新日期：2015-01-20 00:00:00

abstract：:Perforin-mediated cytotoxicity is essential for clearance of primary LCMV infection. BALB/c-perforin-deficient (PKO) mice survived LCMV infection by deleting NP(118)-specific CD8(+) T cells whereas vaccination of PKO mice with Listeria expressing NP(118) generated a stable memory CD8(+) T cell population. However, >85...

journal_title：Immunity

authors： Badovinac VP,Hamilton SE,Harty JT

更新日期：2003-04-01 00:00:00

abstract：:Much of the current understanding in hematopoietic stem cell differentiation into immune-cell lineages comes from mouse studies, but how well does it translate to the human system? ...

journal_title：Immunity

authors： Payne KJ,Crooks GM

更新日期：2007-06-01 00:00:00

abstract：:Myeloid-derived suppressor cells (MDSCs) and cancer stem cells (CSCs) are important cellular components in the cancer microenvironment and may affect cancer phenotype and patient outcome. The nature of MDSCs and their interaction with CSCs in ovarian carcinoma are unclear. We examined the interaction between MDSCs and...

journal_title：Immunity

authors： Cui TX,Kryczek I,Zhao L,Zhao E,Kuick R,Roh MH,Vatan L,Szeliga W,Mao Y,Thomas DG,Kotarski J,Tarkowski R,Wicha M,Cho K,Giordano T,Liu R,Zou W

更新日期：2013-09-19 00:00:00

abstract：:Superantigens (SAgs) are proteins produced by pathogenic microbes to elicit potent, antigen-independent T cell responses that are believed to enhance the microbes' pathogenicity. Here we show that the human lymphotropic herpesvirus Epstein-Barr virus (EBV) transcriptionally activates the env gene of an endogenous retr...

journal_title：Immunity

authors： Sutkowski N,Conrad B,Thorley-Lawson DA,Huber BT

更新日期：2001-10-01 00:00:00

abstract：:Asthma is a chronic inflammatory airway disease associated with type 2 cytokines interleukin-4 (IL-4), IL-5, and IL-13, which promote airway eosinophilia, mucus overproduction, bronchial hyperresponsiveness (BHR), and immunogloubulin E (IgE) synthesis. However, only half of asthma patients exhibit signs of an exacerba...

journal_title：Immunity

authors： Lambrecht BN,Hammad H,Fahy JV

更新日期：2019-04-16 00:00:00

abstract：:The recent characterization of a mutant strain of mice generated five decades ago in a program to study ionizing radiation in mammals (and, ironically, derived from a nonmutagenized control animal) is helping to dissect a now resurgent area of immunology. Despite a vast literature during the 1970s, the study of suppre...

journal_title：Immunity

authors： Ramsdell F

更新日期：2003-08-01 00:00:00

abstract：:Inhibition of immune regulatory checkpoints, such as CTLA-4 and the PD-1-PD-L1 axis, is at the forefront of immunotherapy for cancers of various histological types. However, such immunotherapies fail to control neoplasia in a significant proportion of patients. Here, we review how a range of cancer-cell-autonomous cue...

journal_title：Immunity

authors： Pitt JM,Vétizou M,Daillère R,Roberti MP,Yamazaki T,Routy B,Lepage P,Boneca IG,Chamaillard M,Kroemer G,Zitvogel L

更新日期：2016-06-21 00:00:00

abstract：:Uric acid (UA) crystals are a potent stimulator of inflammation, but how they activate immune cells is not known. In this issue of Immunity, Ng et al. (2008) provide evidence suggesting that UA activates the Syk kinase via membrane cholesterol. ...

journal_title：Immunity

authors： DeFranco AL

更新日期：2008-11-14 00:00:00

abstract：:Knowledge of the regional tissue distribution of T cell subsets is a prerequisite for understanding protective immunity and the pathophysiology of T cell-mediated diseases. In this issue of Immunity, Sathaliyawala et al. (2012) present a comprehensive human tissue T cell analysis. ...

journal_title：Immunity

authors： Neuenhahn M,Busch DH

更新日期：2013-01-24 00:00:00