Abstract
Stem cells have a vast range of functions from tissue regeneration to immunoregulation. They have the ability to modulate immune responses and change the progression of different inflammatory and autoimmune disorders. Tumor cells share many characteristics of stem/progenitor cells too. Both can inhibit effector T cells and other immune cells, while inducing regulatory T cells (T regs), thus, reducing the production of pro-inflammatory cytokines and increasing the production of anti-inflammatory ones. In this context, some cytokines like TNFα are able to control the direction of the immune response. TNF-TNFR signaling plays a dual role: while the interaction of TNFα with TNFR1 mediates pro-inflammatory effects and cell death, its interaction with TNFR2 mediates anti-inflammatory effects and cell survival. We think the expression of TNFR2 confers a level of immunomodulatory properties to its expressing cell and this could be crucially important, particularly, for stem/progenitor and tumor cells. This idea has been already proven in many TNFR2+ cells. Different immunosuppressive cells like T regs, regulatory B cells (B regs), myeloid-derived suppressor cells (MDSCs), mesenchymal stem cells (MSCs) and endothelial progenitor cells (...Continue Reading
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Citations
Dec 22, 2020·Frontiers in Cell and Developmental Biology·Ghada BeldiSina Naserian
Dec 12, 2020·Stem Cell Research & Therapy·Sina NaserianGeorges Uzan
Apr 29, 2021·ImmunoTargets and Therapy·Yang YangXin Chen