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You are here: Home / Articles / 2015 ACR/ARHP Annual Meeting: T Follicular Helper Cells Emerge as Potential Treatment Target for Autoimmune Diseases

2015 ACR/ARHP Annual Meeting: T Follicular Helper Cells Emerge as Potential Treatment Target for Autoimmune Diseases

February 17, 2016 • By Mary Beth Nierengarten

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A scientist places a blood sample under a microscope in the laboratory.

A scientist places a blood sample under a microscope in the laboratory.
Image Credit: 18percentgrey/shutterstock.com

SAN FRANCISCO—T follicular helper (Tfh) cells are emerging as an important subset of cells now recognized as important to facilitating an adaptive immune response. Developed during dendritic cell priming in vivo, these cells represent one subgroup among many of effector cells that result after naive CD4+T cells differentiate. Other well-known subgroups include Th1 cells, Th2 cells, Th17 cells and iTreg cells. Each of these subgroups elicits different immunological effector functions. For example, Th1 cells are involved with clearing viruses, Th2 in responses to helminthes (worms), Th17 in clearing fungi, and iTreg cells in suppressing immune responses at mucosal surfaces. The specialized function of Tfh cells is offering B cell help, which is critical for adaptive immune responses.1

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During a session titled, T Follicular Cells and Their Mediators, at the 2015 ACR/ARHP Annual Meeting, a panel of experts spoke on current and emerging research on the basic science underlying Tfh cells (also referred to as follicular B helper T cells) and the increasing understanding of how these cells contribute to antibody responses.

Dr. Craft

Dr. Craft

Among the speakers was Joseph E. Craft, MD, Paul B. Beeson Professor of Medicine (Rheumatology) and professor of immunobiology, section chief, Rheumatology, Yale School of Medicine, New Haven, Conn., who, along with providing an overview of the development and function of these cells, spoke on their role in autoimmune disease.

“Follicular B helper T cells are critical for T-dependent antibody responses upon pathogen or vaccine challenge,” he said.

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For rheumatologists, the importance of understanding their function, developmental pathways and regulation is highlighted by the role these cells play in autoimmune diseases. “When Tfh cells are aberrantly regulated, they promote pathogenic autoantibody production in rheumatic diseases,” he said, citing systemic lupus erthymatosus (SLE), anti-citrullinated protein antibodies (ACPA) positivity, rheumatoid arthritis (RA) and anti-neutrophil cytoplasmic antibodies (ANCA) positive vasculitis.

Tfh & SLE

To help rheumatologists understand the complex mechanisms behind Tfh cells, Dr. Craft described research showing an association between circulating Tfh cells and SLE.

In a study to assess the relationship between circulating Tfh-like CD4+ T cells and disease activity in patients with SLE, Choi and colleagues, among them rheumatologists of the Eloisa Bonfa group in São Paulo, Brazil, compared blood samples from patients with SLE and those with Behçet’s disease to blood samples from healthy controls.2 Circulating Tfh-like cells in all samples were enumerated using flow cytometry, and their frequency was compared with that of circulating plasmablasts (CD19+IgD-CD38+). A possible association of Tfh-like cells with the SLE Disease Activity Index (SLEDAI) was also determined.

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Filed Under: Conditions, Meeting Reports Tagged With: 2015 ACR/ARHP Annual Meeting, American College of Rheumatology, Autoimmune disease, Research, T follicular helper cells, therapy, TreatmentIssue: February 2016

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