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Fursenko DV, Georgiev PG, Bonchuk AN. Study of the N-Terminal Domain Homodimerization in Human Proteins with Zinc Finger Clusters. DOKL BIOCHEM BIOPHYS 2021; 499:257-259. [PMID: 34426923 PMCID: PMC8382608 DOI: 10.1134/s1607672921040050] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2021] [Revised: 04/20/2021] [Accepted: 04/22/2021] [Indexed: 11/28/2022]
Abstract
CTCF belongs to a large family of transcription factors with clusters of C2H2-type zinc finger domains (C2H2 proteins) and is a main architectural protein in mammals. Human CTCF has a homodimerizing unstructured domain at the N-terminus which is involved in long-distance interactions. To test the presence of similar N-terminal domains in other human C2H2 proteins, a yeast two-hybrid system was used. In total, the ability of unstructured N-terminal domains to homodimerize was investigated for six human C2H2 proteins with an expression profile similar to CTCF. The data indicate the lack of the homodimerization ability of these domains. On the other hand, three C2H2 proteins containing the structured domain DUF3669 at the N-terminus demonstrated homo- and heterodimerization activity.
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Affiliation(s)
- D V Fursenko
- Institute of Gene Biology, Russian Academy of Sciences, Moscow, Russia
| | - P G Georgiev
- Institute of Gene Biology, Russian Academy of Sciences, Moscow, Russia
| | - A N Bonchuk
- Institute of Gene Biology, Russian Academy of Sciences, Moscow, Russia.
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Bustos FJ, Ampuero E, Jury N, Aguilar R, Falahi F, Toledo J, Ahumada J, Lata J, Cubillos P, Henríquez B, Guerra MV, Stehberg J, Neve RL, Inestrosa NC, Wyneken U, Fuenzalida M, Härtel S, Sena-Esteves M, Varela-Nallar L, Rots MG, Montecino M, van Zundert B. Epigenetic editing of the Dlg4/PSD95 gene improves cognition in aged and Alzheimer's disease mice. Brain 2017; 140:3252-3268. [PMID: 29155979 DOI: 10.1093/brain/awx272] [Citation(s) in RCA: 101] [Impact Index Per Article: 14.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2017] [Accepted: 08/27/2017] [Indexed: 12/31/2022] Open
Abstract
The Dlg4 gene encodes for post-synaptic density protein 95 (PSD95), a major synaptic protein that clusters glutamate receptors and is critical for plasticity. PSD95 levels are diminished in ageing and neurodegenerative disorders, including Alzheimer's disease and Huntington's disease. The epigenetic mechanisms that (dys)regulate transcription of Dlg4/PSD95, or other plasticity genes, are largely unknown, limiting the development of targeted epigenome therapy. We analysed the Dlg4/PSD95 epigenetic landscape in hippocampal tissue and designed a Dlg4/PSD95 gene-targeting strategy: a Dlg4/PSD95 zinc finger DNA-binding domain was engineered and fused to effector domains to either repress (G9a, Suvdel76, SKD) or activate (VP64) transcription, generating artificial transcription factors or epigenetic editors (methylating H3K9). These epi-editors altered critical histone marks and subsequently Dlg4/PSD95 expression, which, importantly, impacted several hippocampal neuron plasticity processes. Intriguingly, transduction of the artificial transcription factor PSD95-VP64 rescued memory deficits in aged and Alzheimer's disease mice. Conclusively, this work validates PSD95 as a key player in memory and establishes epigenetic editing as a potential therapy to treat human neurological disorders.
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Affiliation(s)
- Fernando J Bustos
- Center for Biomedical Research, Faculty of Biological Sciences and Faculty of Medicine, Universidad Andres Bello, Avenida Republica 217, Santiago, Chile.,FONDAP Center for Genome Regulation, Chile
| | - Estibaliz Ampuero
- Center for Biomedical Research, Faculty of Biological Sciences and Faculty of Medicine, Universidad Andres Bello, Avenida Republica 217, Santiago, Chile
| | - Nur Jury
- Center for Biomedical Research, Faculty of Biological Sciences and Faculty of Medicine, Universidad Andres Bello, Avenida Republica 217, Santiago, Chile
| | - Rodrigo Aguilar
- Center for Biomedical Research, Faculty of Biological Sciences and Faculty of Medicine, Universidad Andres Bello, Avenida Republica 217, Santiago, Chile.,FONDAP Center for Genome Regulation, Chile
| | - Fahimeh Falahi
- University of Groningen, University Medical Center Groningen, Groningen, The Netherlands
| | - Jorge Toledo
- Anatomy and Developmental Biology, SCIAN-Lab, Institute of Biomedical Sciences, Biomedical Neuroscience Institute, Center for Medical Informatics and Telemedicine CIMT, National Center for Health Information Systems CENS, Santiago, Chile.,Faculty of Medicine, Universidad de Chile, Santiago, Chile
| | - Juan Ahumada
- Centro de Neurobiología y Plasticidad Cerebral, Departamento de Fisiología, Facultad de Ciencias, Universidad Valparaíso, Chile
| | - Jaclyn Lata
- Department of Neurology and Horae Gene Therapy Center, University of Massachusetts Medical School, Worcester, MA, USA
| | - Paula Cubillos
- Center for Biomedical Research, Faculty of Biological Sciences and Faculty of Medicine, Universidad Andres Bello, Avenida Republica 217, Santiago, Chile
| | - Berta Henríquez
- Center for Biomedical Research, Faculty of Biological Sciences and Faculty of Medicine, Universidad Andres Bello, Avenida Republica 217, Santiago, Chile
| | - Miguel V Guerra
- Center for Biomedical Research, Faculty of Biological Sciences and Faculty of Medicine, Universidad Andres Bello, Avenida Republica 217, Santiago, Chile
| | - Jimmy Stehberg
- Center for Biomedical Research, Faculty of Biological Sciences and Faculty of Medicine, Universidad Andres Bello, Avenida Republica 217, Santiago, Chile
| | - Rachael L Neve
- Department of Brain and Cognitive Sciences, Massachusetts Institute of Technology, Cambridge, Massachusetts, USA
| | - Nibaldo C Inestrosa
- CARE Biomedical Research Center, Faculty of Biological Sciences, Pontificia Universidad Católica de Chile, Chile
| | - Ursula Wyneken
- Laboratorio de Neurociencias, Universidad de Los Andes, Santiago, Chile
| | - Marco Fuenzalida
- Centro de Neurobiología y Plasticidad Cerebral, Departamento de Fisiología, Facultad de Ciencias, Universidad Valparaíso, Chile
| | - Steffen Härtel
- Anatomy and Developmental Biology, SCIAN-Lab, Institute of Biomedical Sciences, Biomedical Neuroscience Institute, Center for Medical Informatics and Telemedicine CIMT, National Center for Health Information Systems CENS, Santiago, Chile.,Faculty of Medicine, Universidad de Chile, Santiago, Chile
| | - Miguel Sena-Esteves
- Department of Neurology and Horae Gene Therapy Center, University of Massachusetts Medical School, Worcester, MA, USA
| | - Lorena Varela-Nallar
- Center for Biomedical Research, Faculty of Biological Sciences and Faculty of Medicine, Universidad Andres Bello, Avenida Republica 217, Santiago, Chile
| | - Marianne G Rots
- University of Groningen, University Medical Center Groningen, Groningen, The Netherlands
| | - Martin Montecino
- Center for Biomedical Research, Faculty of Biological Sciences and Faculty of Medicine, Universidad Andres Bello, Avenida Republica 217, Santiago, Chile.,FONDAP Center for Genome Regulation, Chile
| | - Brigitte van Zundert
- Center for Biomedical Research, Faculty of Biological Sciences and Faculty of Medicine, Universidad Andres Bello, Avenida Republica 217, Santiago, Chile
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