PMID- 29623079 OWN - NLM STAT- MEDLINE DCOM- 20190501 LR - 20190501 IS - 1664-3224 (Print) IS - 1664-3224 (Electronic) IS - 1664-3224 (Linking) VI - 9 DP - 2018 TI - The Significance of Tumor Necrosis Factor Receptor Type II in CD8(+) Regulatory T Cells and CD8(+) Effector T Cells. PG - 583 LID - 10.3389/fimmu.2018.00583 [doi] LID - 583 AB - Tumor necrosis factor (TNF) is a pleiotropic cytokine that has both pro-inflammatory and anti-inflammatory functions. The biological functions of TNF are mediated by two receptors, TNF receptor type I (TNFR1) and TNF receptor type II (TNFR2). TNFR1 is expressed universally on almost all cell types and has been extensively studied, whereas TNFR2 is mainly restricted to immune cells and some tumor cells and its role is far from clarified. Studies have shown that TNFR2 mediates the stimulatory activity of TNF on CD4(+)Foxp3(+) regulatory T cells (Tregs) and CD8(+)Foxp3(+) Tregs, and is involved in the phenotypic stability, proliferation, activation, and suppressive activity of Tregs. TNFR2 can also be expressed on CD8(+) effector T cells (Teffs), which delivers an activation signal and cytotoxic ability to CD8(+) Teffs during the early immune response, as well as an apoptosis signal to terminate the immune response. TNFR2-induced abolition of TNF receptor-associated factor 2 (TRAF2) degradation may play an important role in these processes. Consequently, due to the distribution of TNFR2 and its pleiotropic effects, TNFR2 appears to be critical to keeping the balance between Tregs and Teffs, and may be an efficient therapeutic target for tumor and autoimmune diseases. In this review, we summarize the biological functions of TNFR2 expressed on CD8(+)Foxp3(+) Tregs and CD8(+) Teffs, and highlight how TNF uses TNFR2 to coordinate the complex events that ultimately lead to efficient CD8(+) T cell-mediated immune responses. FAU - Ye, Lin-Lin AU - Ye LL AD - Department of Respiratory Medicine, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China. FAU - Wei, Xiao-Shan AU - Wei XS AD - Department of Respiratory Medicine, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China. FAU - Zhang, Min AU - Zhang M AD - Department of Respiratory Medicine, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China. FAU - Niu, Yi-Ran AU - Niu YR AD - Department of Respiratory Medicine, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China. FAU - Zhou, Qiong AU - Zhou Q AD - Department of Respiratory Medicine, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China. LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't PT - Review DEP - 20180322 PL - Switzerland TA - Front Immunol JT - Frontiers in immunology JID - 101560960 RN - 0 (Biomarkers) RN - 0 (Receptors, Tumor Necrosis Factor, Type II) SB - IM MH - Animals MH - Apoptosis/immunology MH - Biomarkers MH - CD8-Positive T-Lymphocytes/immunology/*metabolism MH - Cytotoxicity, Immunologic MH - Gene Expression Regulation MH - Humans MH - Immunity MH - Immunologic Memory MH - Lymphocyte Activation/immunology MH - Phenotype MH - Protein Binding MH - Receptors, Tumor Necrosis Factor, Type II/genetics/*metabolism MH - Signal Transduction MH - T-Lymphocyte Subsets/immunology/*metabolism MH - T-Lymphocytes, Regulatory/immunology/*metabolism PMC - PMC5874323 OTO - NOTNLM OT - CD4+ regulatory T cells OT - CD8+ effector T cells OT - CD8+ regulatory T cells OT - tumor necrosis factor OT - tumor necrosis factor receptor type II EDAT- 2018/04/07 06:00 MHDA- 2018/04/07 06:01 PMCR- 2018/01/01 CRDT- 2018/04/07 06:00 PHST- 2017/12/31 00:00 [received] PHST- 2018/03/08 00:00 [accepted] PHST- 2018/04/07 06:00 [entrez] PHST- 2018/04/07 06:00 [pubmed] PHST- 2018/04/07 06:01 [medline] PHST- 2018/01/01 00:00 [pmc-release] AID - 10.3389/fimmu.2018.00583 [doi] PST - epublish SO - Front Immunol. 2018 Mar 22;9:583. doi: 10.3389/fimmu.2018.00583. eCollection 2018.