B and T Cell Collaboration in Lymphoid and Nonlymphoid Microenvironments (L4)
March 16-19, 2026  | Keystone Resort, Keystone, CO, United States
Stephanie C. Eisenbarth, Jason G. Cyster and Ziv Shulman
Scholarship Deadline: Nov. 14, 2025 | Abstract Deadline: Feb. 24, 2026 | Early Registration Deadline: Jan. 15, 2026
* Session Chair † Invited but not yet accepted | Program current as of December 16, 2025 10 AM | For the most up-to-date details, visit https://www.keystonesymposia.org
Monday, March 16, 2026
12:00–3:00 PM CU Anschutz Pre-Conference Workshop: Networking & Communication Skills (separate registration required) Learn more at: https://keysym.us/CUAnschutz26
4:00–8:00 PM Registration
6:00–8:00 PM Welcome Mixer
Tuesday, March 17, 2026
7:00–8:00 AM Breakfast
8:00–8:10 AM Welcome Remarks (Joint)
8:10–9:00 AM Keynote Address (Joint)
  Carola G. Vinuesa, Francis Crick Institute
Regulation of Humoral Immunity
 
9:00–11:30 AM Generation and Maintenance of Humoral Memory (Joint)
  Kim Good-Jacobson, Monash University
Memory B Cells and Plasma Cells in Acute and Chronic Viral Infections
 
  Taras Kreslavsky, Karolinska Institutet
The Multilayered Identity of B Cell Memory
 
  Frances E. Lund, University of Alabama at Birmingham
Pathogen-Specific Memory B Cell Subsets and Antibody Production
 
  Shane Crotty, La Jolla Institute for Immunology
Short Talk: Germline-Targeting Vaccine Elicits HIV Broadly Neutralizing Antibodies In Nonhuman Primates
 
  Gowthaman Uthaman, University of Massachusetts Chan Medical School
Short Talk: Lymph Node ILC2s Drive Tfh13 Cell Differentiation and Anaphylactic IgE Responses
 
9:30–9:50 AM Coffee Break
11:30–1:00 PM Poster Setup
11:30–5:00 PM On Own for Lunch
1:00–10:00 PM Poster Viewing
1:15–2:15 PM Meet the Editors (Joint)
2:30–4:30 PM Symposia Spotlight 1
  Lauren A. Hesser, Eli Lilly & Company
Intestinal T-bet+ Plasmablasts Mediate Epithelial Barrier Dysfunction and Inflammatory Bowel Disease
 
  Gabrielle R Berman, NYU Langone Health
Lymphatic Control of Germinal Centers in Settings of De Novo Formation and Chronic Activation
 
  Youngnim Choi, Seoul National University
B cells Function as Innate Antigen-Presenting Cells through BCR-independent Bacterial Uptake
 
  Prasanti Kotagiri, Monash University
B Cell Analysis with Multiplexed Antigen Panels Defines Determinants of Antibody Breadth in Human Vaccination and Infection
 
  Seren Baygün †, Translatum
Hyperreactive B Cell-Induced T Cell Control Regulates Autoimmunity And Lymphomagenesis
 
  Susana Cheetham †, The University of Alabama at Birmingham
Influenza-Specific Lung-Resident Memory B cells assist CD4 Recall Responses during Challenge Infections
 
  Amalie Grenov †, Francis Crick Institute
Autoantibody Origins in Lupus and in Relapse Post CAR-T Therapy
 
  Natalia Freund †, Tel Aviv University
Potent Neutralization by Antibodies Targeting the Mpox virus
 
4:30–5:00 PM Coffee Available
5:00–7:00 PM Canonical B Cell Immune Responses
  Jason G. Cyster, HHMI/University of California, San Francisco
Guidance Factors and the B Cell Response
 
  Teddy Yewdell, Genentech
Dysregulated Antibody Class Switching in Autoimmunity
 
  Brian J Laidlaw, Washington University in St. Louis
Establishment of Lung-Resident Memory B Cells
 
  Julia Merkenschlager, Harvard
Short Talk: Coupled Affinity Dynamics Between T Follicular Helper Cells and B Cells in the Germinal Cente
 
  Vipul Shukla †, Northwestern University
Short Talk: Metabolic and Epigenetic Control Of Germinal Center B Cell Responses
 
7:00–8:00 PM Social Hour with Dinner
7:30–10:00 PM Poster Session 1
Wednesday, March 18, 2026
7:00–8:00 AM Breakfast
8:00–11:00 AM Humoral Immunity in Mucosal Tissues
  Stephanie C. Eisenbarth, Northwestern University Feinberg School of Medicine
Origins of IgA in the Gut
 
  Mauro N. Gaya, Centre d’Immunologie de Marseille-Luminy
B Cell Instruction to Mucosal Antigens
 
  Jagan R. Muppidi, NCI, National Institutes of Health
Tissue Specific Cues in the Pathogenesis of Germinal Center-Derived Malignancy
 
  Maria A. Curotto de Lafaille, Icahn School of Medicine at Mount Sinai
IgE Responses
 
  Danika L Hill, Monash University
Short Talk: Sugar-Coated Or Protein-Packed? How Antigen Type Shapes The B Cell Response To Mucosal Bacterial Infection In Humans
 
  Jenna Guthmiller, University of Colorado SOM
Short Talk: Ectopic Germinal Centers In Human Nasal Mucosa Are Inductive Site For Local Humoral Immunity
 
9:00–9:20 AM Coffee Break
11:00–1:00 PM Poster Setup
11:00–5:00 PM On Own for Lunch
1:00–10:00 PM Poster Viewing
1:30–3:15 PM Panel Discussion: Defining B Cell Subsets (Joint)
  Frances E. Lund, University of Alabama at Birmingham
 
  Nicole Baumgarth, Johns Hopkins Bloomberg School of Public Health
 
  Stephanie C. Eisenbarth, Northwestern University Feinberg School of Medicine
 
  Kim Good-Jacobson, Monash University
 
  Jason G. Cyster, HHMI/University of California, San Francisco
 
  Mark J. Shlomchik, University of Pittsburgh School of Medicine
 
  Ziv Shulman, Weizmann Institute
 
3:30–4:30 PM Career Roundtable (Joint)
4:30–5:00 PM Coffee Available
5:00–7:00 PM Humoral Helpers (Joint)
  Tri G Phan, Garvan Institute of Medical Research
B Cell-Macrophage Interactions in Immunity and Autoimmunity
 
  Michelle A Linterman, Malaghan Institute of Medical Research
Instruction of Antibody Responses Over Time
 
  Laura M Walker, Moderna
Vaccine Induced Antibody Responses
 
  David R Fooksman, Albert Einstein College of Medicine
Short Talk: Investigating the Rrle of CD138 and APRIL in the Plasma Cell Survival And Dynamics In The Bone Marrow Niche
 
  Di Yu, University of Queensland
Short Talk: Lipid Metabolism Drives Dietary Effects on Ferroptosis In Tfh Cells and Modulates Humoral Immunity
 
7:00–8:00 PM Social Hour with Dinner
7:30–10:00 PM Poster Session 2
Thursday, March 19, 2026
7:00–8:00 AM Breakfast
8:00–11:00 AM B-T Cell Interactions in Complex Microenvironments (Cancer, TLS, EF)
  Ziv Shulman, Weizmann Institute
Germinal Centers in Atypical Locations
 
  Tullia C. Bruno, University of Pittsburgh
Germinal Centers in Cancer Associated TLS
 
  Steven H Kleinstein, Yale School of Medicine
Computational Frameworks to Understand T-B Cell Interactions
 
  Jason Weinstein, Rutgers New Jersey Medical School
Specialized Tfh Cells Driving B Cell Differentiation
 
  Joanna R Groom, Walter and Eliza Hall Institute of Medical Research
Short Talk: Cellular and Molecular Networks Driving the Formation and Maturation of Tumor-Associated Tertiary Lymphoid Structures
 
  Alice O Kamphorst, Icahn School of Medicine at Mount Sinai
Short Talk: CD4-help and B Cells are Essential for Therapeutic Efficacy of PD-1 Targeted Therapy in Liver Cancer
 
9:00–9:20 AM Coffee Break
11:00–5:00 PM On Own for Lunch
2:30–4:30 PM Symposia Spotlight 2
  Hui Hu †, University of Alabama at Birmingham
A Novel Bidirectional Regulatory Mechanism Coordinating Systemic CXCR5– versus CXCR5+ CD4+ T Cell Differentiation
 
  Joe Mackie, Children's Hospital of Philadelphia
SARS-COV2 Vaccine Responses in Patients with Inborn Errors of Cytokine Signaling
 
  Ester Marina-Zarate, La Jolla Institute for Immunology
Highly Functional and Prolonged Germinal Center T Follicular Helper Cell Responses Are Associated with Enhanced Neutralizing Antibody Development
 
  Dudley McNitt, Vanderbilt University Medical Center
T-B Lymphocyte Interactions Mediated by SLAM-Associated Protein (SAP) are Essential for Diabetes in Transgenic Anti-Insulin VH125SD.NOD Mice
 
  Suzanna Rachimi, University of Pennsylvania
Determinants of Fate Progression Beyond the Human Tfh cell Stage
 
  Hiroyuki Yoshitomi, Kyoto University
Peripheral Helper T Cells Go Beyond B-Cell Help In The Microenvironments Of Rheumatoid Arthritis
 
  Scott Hale †, University of Utah
Dnmt3a-dependent De Novo DNA Methylation Enforces Lineage Commitment and Preserves Functionality of Memory Th1 and Tfh Cells
 
  Junko Sawada, Johns Hopkins All Children's Hospital
Inducing Tertiary Lymphoid Structures: Insights into Potential Stromal Reprogramming
 
4:30–5:00 PM Coffee Available
5:00–6:45 PM Non-Canonical B Cell Immune Responses
  Joseph E. Craft, Yale University
T Cell Instruction of Antibody Responses
 
  Ian A Cockburn, Australian National University
Regulation of B Cell Responses in Complex Infections
 
  Mark J. Shlomchik, University of Pittsburgh School of Medicine
B Cells in Autoimmunity
 
  Christopher D Allen †, University of California, San Francisco
Short Talk: Regulation of IgE Switching by BCR Signaling and Cytokines
 
6:45–7:00 PM Meeting Wrap-Up: Outcomes and Future Directions (Organizers)
7:00–8:00 PM Social Hour with Dinner
8:00–11:00 PM Cash Bar
8:00–11:00 PM Entertainment
Friday, March 20, 2026
12:00–11:59 PM Departure