PMID- 37355890 OWN - NLM STAT- MEDLINE DCOM- 20230808 LR - 20231018 IS - 1875-8908 (Electronic) IS - 1387-2877 (Print) IS - 1387-2877 (Linking) VI - 94 IP - 3 DP - 2023 TI - Activation of TNF Receptor 2 Improves Synaptic Plasticity and Enhances Amyloid-beta Clearance in an Alzheimer's Disease Mouse Model with Humanized TNF Receptor 2. PG - 977-991 LID - 10.3233/JAD-221230 [doi] AB - BACKGROUND: Tumor necrosis factor-alpha (TNF-alpha) is a master cytokine involved in a variety of inflammatory and neurological diseases, including Alzheimer's disease (AD). Therapies that block TNF-alpha proved ineffective as therapeutic for neurodegenerative diseases, which might be explained by the opposing functions of the two receptors of TNF (TNFRs): while TNFR1 stimulation mediates inflammatory and apoptotic pathways, activation of TNFR2 is related to neuroprotection. Despite the success of targeting TNFR2 in a transgenic AD mouse model, research that better mimics the human context is lacking. OBJECTIVE: The aim of this study is to investigate whether stimulation of TNFR2 with a TNFR2 agonist is effective in activating human TNFR2 and attenuating AD neuropathology in the J20xhuTNFR2-k/i mouse model. METHODS: Transgenic amyloid-beta (Abeta)-overexpressing mice containing a human extracellular TNFR2 domain (J20xhuTNFR2-k/i) were treated with a TNFR2 agonist (NewStar2). After treatment, different behavioral tests and immunohistochemical analysis were performed to assess different parameters, such as cognitive functions, plaque deposition, synaptic plasticity, or microglial phagocytosis. RESULTS: Treatment with NewStar2 in J20xhuTNFR2-k/i mice resulted in a drastic decrease in plaque load and beta-secretase 1 (BACE-1) compared to controls. Moreover, TNFR2 stimulation increased microglial phagocytic activity, leading to enhanced Abeta clearance. Finally, activation of TNFR2 rescued cognitive impairments and improved synaptic plasticity. CONCLUSION: Our findings demonstrate that activation of human TNFR2 ameliorates neuropathology and improves cognitive functions in an AD mouse model. Moreover, our study confirms that the J20xhuTNFR2-k/i mouse model is suitable for testing human TNFR2-specific compounds. FAU - Orti-Casan, Natalia AU - Orti-Casan N AD - Department of Molecular Neurobiology, Groningen Institute for Evolutionary Life Sciences, University of Groningen, Groningen, The Netherlands. FAU - Wajant, Harald AU - Wajant H AD - Department of Internal Medicine II, University of Wurzburg, Wurzburg, Germany. FAU - Kuiperij, H Bea AU - Kuiperij HB AD - Department of Neurology, Radboud University Medical Center, Donders Institute for Brain, Cognition and Behaviour, Radboud Alzheimer Centre, Nijmegen, The Netherlands. FAU - Hooijsma, Annelien AU - Hooijsma A AD - Department of Molecular Neurobiology, Groningen Institute for Evolutionary Life Sciences, University of Groningen, Groningen, The Netherlands. FAU - Tromp, Leon AU - Tromp L AD - Department of Molecular Neurobiology, Groningen Institute for Evolutionary Life Sciences, University of Groningen, Groningen, The Netherlands. FAU - Poortman, Isabelle L AU - Poortman IL AD - Department of Molecular Neurobiology, Groningen Institute for Evolutionary Life Sciences, University of Groningen, Groningen, The Netherlands. FAU - Tadema, Norick AU - Tadema N AD - Department of Molecular Neurobiology, Groningen Institute for Evolutionary Life Sciences, University of Groningen, Groningen, The Netherlands. FAU - de Lange, Julia H E AU - de Lange JHE AD - Department of Molecular Neurobiology, Groningen Institute for Evolutionary Life Sciences, University of Groningen, Groningen, The Netherlands. FAU - Verbeek, Marcel M AU - Verbeek MM AD - Department of Neurology, Radboud University Medical Center, Donders Institute for Brain, Cognition and Behaviour, Radboud Alzheimer Centre, Nijmegen, The Netherlands. AD - Department of Laboratory Medicine, Radboud University Medical Center, Nijmegen, The Netherlands. FAU - De Deyn, Peter P AU - De Deyn PP AD - Department of Neurology and Alzheimer Center, University of Groningen, University Medical Center Groningen, Groningen, The Netherlands. FAU - Naude, Petrus J W AU - Naude PJW AD - Department of Molecular Neurobiology, Groningen Institute for Evolutionary Life Sciences, University of Groningen, Groningen, The Netherlands. AD - Department of Neurology and Alzheimer Center, University of Groningen, University Medical Center Groningen, Groningen, The Netherlands. FAU - Eisel, Ulrich L M AU - Eisel ULM AD - Department of Molecular Neurobiology, Groningen Institute for Evolutionary Life Sciences, University of Groningen, Groningen, The Netherlands. LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't PL - Netherlands TA - J Alzheimers Dis JT - Journal of Alzheimer's disease : JAD JID - 9814863 RN - 0 (Receptors, Tumor Necrosis Factor, Type II) RN - 0 (Tumor Necrosis Factor-alpha) RN - 0 (Amyloid beta-Peptides) SB - IM MH - Mice MH - Humans MH - Animals MH - *Receptors, Tumor Necrosis Factor, Type II/genetics/metabolism/therapeutic use MH - *Alzheimer Disease/metabolism MH - Tumor Necrosis Factor-alpha/metabolism MH - Mice, Transgenic MH - Amyloid beta-Peptides/metabolism MH - Neuronal Plasticity PMC - PMC10578215 OTO - NOTNLM OT - Alzheimer's disease OT - TNF OT - TNFR2 agonist OT - humanized mouse model OT - neurodegeneration OT - neuroinflammation COIS- The authors have no conflict of interest to report. EDAT- 2023/06/25 06:42 MHDA- 2023/08/08 06:42 PMCR- 2023/10/16 CRDT- 2023/06/25 05:24 PHST- 2023/08/08 06:42 [medline] PHST- 2023/06/25 06:42 [pubmed] PHST- 2023/06/25 05:24 [entrez] PHST- 2023/10/16 00:00 [pmc-release] AID - JAD221230 [pii] AID - 10.3233/JAD-221230 [doi] PST - ppublish SO - J Alzheimers Dis. 2023;94(3):977-991. doi: 10.3233/JAD-221230.