Low protease activity in B cell follicles promotes retention of intact antigens after immunization

A Aung, A Cui, L Maiorino, AP Amini, JR Gregory… - Science, 2023 - science.org
The structural integrity of vaccine antigens is critical to the generation of protective antibody
responses, but the impact of protease activity on vaccination in vivo is poorly understood …

Extrafollicular activation of lymph node B cells by antigen-bearing dendritic cells

H Qi, JG Egen, AYC Huang, RN Germain - Science, 2006 - science.org
In contrast to naïve T cells that recognize short antigen-derived peptides displayed by
specialized antigen-presenting cells, immunoglobulin receptors of B lymphocytes primarily …

Differential lysosomal proteolysis in antigen-presenting cells determines antigen fate

L Delamarre, M Pack, H Chang, I Mellman… - Science, 2005 - science.org
Antigen-presenting cells (APCs) internalize antigens and present antigen-derived peptides
to T cells. Although APCs have been thought to exhibit a well-developed capacity for …

Apoptosis and antigen affinity limit effector cell differentiation of a single naïve B cell

JJ Taylor, KA Pape, HR Steach, MK Jenkins - Science, 2015 - science.org
When exposed to antigens, naïve B cells differentiate into different types of effector cells:
antibody-producing plasma cells, germinal center cells, or memory cells. Whether an …

Activation of lysosomal function during dendritic cell maturation

ES Trombetta, M Ebersold, W Garrett, M Pypaert… - Science, 2003 - science.org
In response to a variety of stimuli, dendritic cells (DCs) transform from immature cells
specialized for antigen capture into mature cells specialized for T cell stimulation. During …

CD8+ T Cell Cross-Priming via Transfer of Proteasome Substrates

CC Norbury, S Basta, KB Donohue, DC Tscharke… - Science, 2004 - science.org
“Cross-priming” describes the activation of naïve CD8+ T cells by professional antigen-
presenting cells that have acquired viral or tumor antigens from “donor” cells. Antigen …

Visualizing antibody affinity maturation in germinal centers

JMJ Tas, L Mesin, G Pasqual, S Targ, JT Jacobsen… - Science, 2016 - science.org
Antibodies somatically mutate to attain high affinity in germinal centers (GCs). There,
competition between B cell clones and among somatic mutants of each clone drives an …

Visualization of specific B and T lymphocyte interactions in the lymph node

P Garside, E Ingulli, RR Merica, JG Johnson, RJ Noelle… - Science, 1998 - science.org
Early events in the humoral immune response were visualized in lymph nodes by
simultaneous tracking of antigen-specific CD4 T and B cells after immunization. The T cells …

Dynamic signaling by T follicular helper cells during germinal center B cell selection

Z Shulman, AD Gitlin, JS Weinstein, B Lainez… - Science, 2014 - science.org
T follicular helper (TFH) cells select high-affinity, antibody-producing B cells for clonal
expansion in germinal centers (GCs), but the nature of their interaction is not well defined …

Turning off follicular dendritic cells

F Mackay, JL Browning - Nature, 1998 - nature.com
Follicular dendritic cells (FDCs) are specialized to display intact antigens for recognition by
B cells. Here we show that inhibition of lymphotoxin α/β (LTα/β) leads to the disappearance …