How diverse environmental cues are integrated to regulate B-cell activation and development remains poorly understood. Here we show that Notch activity synergizes with B-cell receptor (BCR) and/or CD40 signaling to enhance several aspects of B-cell activation and function. We find that costimulation of follicular B cells with the Notch ligand Delta-like-1 leads to significant increases in BCR- and CD40-mediated proliferation and enhances production of IgG1(+) cells in vitro and in vivo. We further find that coengagement of Notch and the BCR results in increased activation of the MAPK pathway, and MAPK and Notch inhibitors prevent B-cell activation events mediated by coengagement of Notch and the BCR. These data suggest that the BCR and CD40 signaling pathways collaborate with the Notch pathway to optimize B-cell activation.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1182/blood-2006-09-046698 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Shift work schedules alter immune cell regulation and accelerate cognitive impairment during aging.
J Neuroinflammation
January 2025
Department of Neuroscience and Experimental Therapeutics, School of Medicine, Texas A&M Health Science Center, Bryan, TX, 77807-3260, USA.
Background: Disturbances of the sleep-wake cycle and other circadian rhythms typically precede the age-related deficits in learning and memory, suggesting that these alterations in circadian timekeeping may contribute to the progressive cognitive decline during aging. The present study examined the role of immune cell activation and inflammation in the link between circadian rhythm dysregulation and cognitive impairment in aging.
Methods: C57Bl/6J mice were exposed to shifted light-dark (LD) cycles (12 h advance/5d) during early adulthood (from ≈ 4-6mo) or continuously to a "fixed" LD12:12 schedule.
Enhanced antibody responses in CD19-Cre mice.
Sci Rep
January 2025
Institute of Biomedicine and MediCity Research Laboratories, University of Turku, Turku, Finland.
CD19-Cre is an important and widely used Cre-lox model for B cell-specific genetic manipulation in murine systems. Mice carrying one allele of CD19-Cre are, at the same time, rendered heterozygote for CD19, a crucial coreceptor of the B cell antigen receptor (BCR). As a result, CD19-Cre mice exhibit diminished expression levels of CD19, with potential, yet insufficiently examined, consequences in B cell activation.
View Article and Find Full Text PDFImmunoregulatory programs in anti-N-methyl-D-aspartate receptor encephalitis identified by single-cell multi-omics analysis.
Clin Transl Med
January 2025
Department of Neurology, The Third Affiliated Hospital of Sun Yat-sen University, Guangzhou, China.
Background: Anti-N-methyl-D-aspartate receptor encephalitis (anti-NMDARE) is a prevalent type of autoimmune encephalitis caused by antibodies targeting the NMDAR's GluN1 subunit. While significant progress has been made in elucidating the pathophysiology of autoimmune diseases, the immunological mechanisms underlying anti-NMDARE remain elusive. This study aimed to characterize immune cell interactions and dysregulation in anti-NMDARE by leveraging single-cell multi-omics sequencing technologies.
View Article and Find Full Text PDFTalquetamab plus Teclistamab in Relapsed or Refractory Multiple Myeloma.
N Engl J Med
January 2025
From Tel Aviv Sourasky Medical Center (Y.C.C., I.A.), and the Faculty of Medical and Health Sciences, Tel Aviv University (Y.C.C., H.M., I.A.), Tel Aviv, Chaim Sheba Medical Center, Ramat Gan (H.M.), and Hadassah Hebrew University Medical Center, Jerusalem (M.G.) - all in Israel; McGill University and McGill University Health Centre, Montreal (M.S.), and Alberta Health Services, Edmonton (M.P.C.) - all in Canada; Samsung Medical Center, Sungkyunkwan University School of Medicine (K.K.), Seoul St. Mary's Hospital, Catholic University of Korea (C.-K.M.), and Seoul National University College of Medicine (S.-S.Y.) - all in Seoul, South Korea; Hospital Universitario Marqués de Valdecilla, Instituto de Investigación Sanitaria Valdecilla, Universidad de Cantabria, Santander (E.M.O.), Cancer Center Clínica Universidad de Navarra, Center for Applied Medical Research, Pamplona (P.R.-O.), Institut Català d'Oncologia, Josep Carreras Leukemia Research Institute, and the Hospital Germans Trias i Pujol, Barcelona (A.O.), START Madrid-Fundación Jiménez Díaz Early Phase Unit, University Hospital Fundación Jiménez Díaz, Madrid (D.M.), and the University Hospital of Salamanca, Institute for Biomedical Research of Salamanca, the Salamanca Cancer Research Center, and Centro de Investígación Biomédica en Red Cáncer, Salamanca (M.-V.M.) - all in Spain; Janssen Research and Development, Spring House, PA (N.A.Q.C., A.K., M.K., M.R.P., E.S., B.H., J.V., A.B.); and Janssen Research and Development, Allschwil, Switzerland (L.D.S.).
Background: Talquetamab (anti-G protein-coupled receptor family C group 5 member D) and teclistamab (anti-B-cell maturation antigen) are bispecific antibodies that activate T cells by targeting CD3 and that have been approved for the treatment of triple-class-exposed relapsed or refractory multiple myeloma.
Methods: We conducted a phase 1b-2 study of talquetamab plus teclistamab in patients with relapsed or refractory multiple myeloma. In phase 1, we investigated five dose levels in a dose-escalation study.
[Effect of "Zhibian" (BL54)-toward-"Shuidao" (ST28) acupuncture on reproductive function in mice with asthenozoospermia based on mitochondrial apoptosis].
Zhongguo Zhen Jiu
January 2025
College of Acupuncture-Moxibustion and Tuina, Chengdu University of TCM, Chengdu 610075, Sichuan Province, China; Second Clinical College, Shanxi University of CM, Jinzhong 030619.
Objective: To observe the effects of the "Zhibian" (BL54)-toward-"Shuidao" (ST28) acupuncture on key regulatory factors during mitochondrial apoptosis of testicular tissue in asthenozoospermia mice, and explore the potential mechanism of the protective effect of acupuncture on reproductive function.
Methods: Thirty C57BL/6 male mice were randomly divided into a blank group, a model group and an acupuncture group, 10 mice in each group. In the model and the acupuncture groups, the intraperitoneal injection of cyclophosphamide (30 mg•kg•d) was delivered for 7 days to prepare the asthenozoospermia model.
Want AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!