Interferon γ Eliminates Responding Cd4 T Cells during Mycobacterial Infection by Inducing Apoptosis of Activated Cd4 T Cells

The Effect of Beta Interferon on Dendritic Cells and Cytokine Synthesis by CD4+ T Cells

Background: Dendritic cells (DC) are a key regulator of the immune response, and interferon- beta (IFN-β) is considered an immunomodulatory molecule for DC. Objective: The purpose of this study was to evaluate the ability of IFN-β treated DC to induce cytokine secretion by CD4+ T cells. Methods: Dendritic cells were generated from blood monocytes with granulocyte-monocyte colony-stimulating fac...

سطح بالای پاسخ ایمنی اختصاصی لنفوسیت‌های CD4+وCD8+ نسبت به سیتومگالوویروس و همبستگی بین آن‌ها در بیماران مبتلا به لوسمی لنفوسیتی مزمن سلولB

  High level of CMV-specific CD4+ and CD8+cells Immune Response and Correlation Between them in B-cell Chronic Lymphocytic Leukemia Patients     B. Pourgheysri [1] , P. Moss [2]     Received: 10/09/07 Sent for Revision: 05/03/08 Received Revised Manuscript: 06/12/08 Accepted: 30/12/08   Background and Objective: Chronic lymphocytic leukemia (CLL) is characterized by a monoclonal proliferation o...

Gamma interferon responses of CD4 and CD8 T-cell subsets are quantitatively different and independent of each other during pulmonary Mycobacterium bovis BCG infection.

Gamma interferon (IFN-gamma) is a key cytokine in host defense against intracellular mycobacterial infection. It has been believed that both CD4 and CD8 T cells are the primary sources of IFN-gamma. However, the relative contributions of CD4 and CD8 T-cell subsets to IFN-gamma production and the relationship between CD4 and CD8 T-cell activation have not been examined. By using a model of pulmo...

Failure to Suppress the Expansion of the Activated Cd4 T Cell Population in Interferon γ–Deficient Mice Leads to Exacerbation of Experimental Autoimmune Encephalomyelitis

Mice deficient in interferon (IFN)-gamma or IFN-gamma receptor develop progressive and fatal experimental autoimmune encephalomyelitis (EAE). We demonstrate that CD4 T cells lacking IFN-gamma production were required to passively transfer EAE, indicating that they were disease-mediating cells in IFN-gamma knockout (KO) mice. IFN-gamma KO mice accumulated 10-16-fold more activated CD4 T cells (C...

IFN- Acts Directly on Activated CD4 T Cells during Mycobacterial Infection to Promote Apoptosis by Inducing Components of the Intracellular Apoptosis Machinery and by Inducing Extracellular Proapoptotic Signals