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Pei Z, Guo X, Zheng F, Yang Z, Li T, Yu Z, Li X, Guo X, Chen Q, Fu C, Tang T, Feng D, Wang Y. Xuefu Zhuyu decoction promotes synaptic plasticity by targeting miR-191a-5p/BDNF-TrkB axis in severe traumatic brain injury. PHYTOMEDICINE : INTERNATIONAL JOURNAL OF PHYTOTHERAPY AND PHYTOPHARMACOLOGY 2024; 129:155566. [PMID: 38565001 DOI: 10.1016/j.phymed.2024.155566] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/12/2023] [Revised: 02/08/2024] [Accepted: 03/22/2024] [Indexed: 04/04/2024]
Abstract
BACKGROUND Xuefu Zhuyu decoction (XFZYD) is a traditional Chinese herbal formula known for its ability to eliminate blood stasis and improve blood circulation, providing neuroprotection against severe traumatic brain injury (sTBI). However, the underlying mechanism is still unclear. PURPOSE We aim to investigate the neuroprotective effects of XFZYD in sTBI from a novel mechanistic perspective of miRNA-mRNA. Additionally, we sought to elucidate a potential specific mechanism by integrating transcriptomics, bioinformatics, and conducting both in vitro and in vivo experiments. METHODS The sTBI rat model was established, and the rats were treated with XFZYD for 14 days. The neuroprotective effects of XFZYD were evaluated using a modified neurological severity score, hematoxylin and eosin staining, as well as Nissl staining. The anti-inflammatory effects of XFZYD were explored using quantitative real-time PCR (qRT-PCR), Western blot analysis, and immunofluorescence. Next, miRNA sequencing of the hippocampus was performed to determine which miRNAs were differentially expressed. Subsequently, qRT-PCR was used to validate the differentially expressed miRNAs. Target core mRNAs were determined using various methods, including miRNA prediction targets, mRNA sequencing, miRNA-mRNA network, and protein-protein interaction (PPI) analysis. The miRNA/mRNA regulatory axis were verified through qRT-PCR or Western blot analysis. Finally, morphological changes in the neural synapses were observed using transmission electron microscopy and immunofluorescence. RESULTS XFZYD exhibited significant neuroprotective and anti-inflammatory effects on subacute sTBI rats' hippocampus. The analyses of miRNA/mRNA sequences combined with the PPI network revealed that the therapeutic effects of XFZYD on sTBI were associated with the regulation of the rno-miR-191a-5p/BDNF axis. Subsequently, qRT-PCR and Western blot analysis confirmed XFZYD reversed the decrease of BDNF and TrkB in the hippocampus caused by sTBI. Additionally, XFZYD treatment potentially increased the number of synaptic connections, and the expression of the synapse-related protein PSD95, axon-related protein GAP43 and neuron-specific protein TUBB3. CONCLUSIONS XFZYD exerts neuroprotective effects by promoting hippocampal synaptic remodeling and improving cognition during the subacute phase of sTBI through downregulating of rno-miR-191a-5p/BDNF axis, further activating BDNF-TrkB signaling.
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Affiliation(s)
- Zhuan Pei
- Institute of Integrative Medicine, Department of Integrated Traditional Chinese and Western Medicine, Xiangya Hospital, Central South University, Changsha 410008, PR China; National Clinical Research Center for Geriatric Disorders, Xiangya Hospital, Central South University, Changsha 410008, PR China; NATCM Key Laboratory of TCM Gan, Xiangya Hospital, Central South University, Changsha 410008, PR China
| | - Xiaohang Guo
- School of Medicine, Hunan University of Chinese Medicine, Changsha 410208, PR China
| | - Fei Zheng
- The College of Integrated Traditional Chinese and Western Medicine, Hunan University of Chinese Medicine, Changsha 410208, PR China
| | - Zhaoyu Yang
- Institute of Integrative Medicine, Department of Integrated Traditional Chinese and Western Medicine, Xiangya Hospital, Central South University, Changsha 410008, PR China; National Clinical Research Center for Geriatric Disorders, Xiangya Hospital, Central South University, Changsha 410008, PR China; NATCM Key Laboratory of TCM Gan, Xiangya Hospital, Central South University, Changsha 410008, PR China; Xiangya Hospital, Central South University, Jiangxi, Nanchang 330004, PR China
| | - Teng Li
- Institute of Integrative Medicine, Department of Integrated Traditional Chinese and Western Medicine, Xiangya Hospital, Central South University, Changsha 410008, PR China; National Clinical Research Center for Geriatric Disorders, Xiangya Hospital, Central South University, Changsha 410008, PR China; NATCM Key Laboratory of TCM Gan, Xiangya Hospital, Central South University, Changsha 410008, PR China; Xiangya Hospital, Central South University, Jiangxi, Nanchang 330004, PR China
| | - Zhe Yu
- Institute of Integrative Medicine, Department of Integrated Traditional Chinese and Western Medicine, Xiangya Hospital, Central South University, Changsha 410008, PR China; National Clinical Research Center for Geriatric Disorders, Xiangya Hospital, Central South University, Changsha 410008, PR China; NATCM Key Laboratory of TCM Gan, Xiangya Hospital, Central South University, Changsha 410008, PR China
| | - Xuexuan Li
- Institute of Integrative Medicine, Department of Integrated Traditional Chinese and Western Medicine, Xiangya Hospital, Central South University, Changsha 410008, PR China; National Clinical Research Center for Geriatric Disorders, Xiangya Hospital, Central South University, Changsha 410008, PR China; NATCM Key Laboratory of TCM Gan, Xiangya Hospital, Central South University, Changsha 410008, PR China
| | - Xin Guo
- The First Affiliated Hospital, Department of Child Healthcare, Hengyang Medical School, University of South China, Hengyang, Hunan 421001, PR China
| | - Quan Chen
- Institute of Integrative Medicine, Department of Integrated Traditional Chinese and Western Medicine, Xiangya Hospital, Central South University, Changsha 410008, PR China; National Clinical Research Center for Geriatric Disorders, Xiangya Hospital, Central South University, Changsha 410008, PR China; NATCM Key Laboratory of TCM Gan, Xiangya Hospital, Central South University, Changsha 410008, PR China
| | - Chunyan Fu
- College of Pharmacy, Shaoyang University, Shaoyang 422100, PR China
| | - Tao Tang
- Institute of Integrative Medicine, Department of Integrated Traditional Chinese and Western Medicine, Xiangya Hospital, Central South University, Changsha 410008, PR China; National Clinical Research Center for Geriatric Disorders, Xiangya Hospital, Central South University, Changsha 410008, PR China; NATCM Key Laboratory of TCM Gan, Xiangya Hospital, Central South University, Changsha 410008, PR China; Xiangya Hospital, Central South University, Jiangxi, Nanchang 330004, PR China
| | - Dandan Feng
- Institute of Integrative Medicine, Department of Integrated Traditional Chinese and Western Medicine, Xiangya Hospital, Central South University, Changsha 410008, PR China; National Clinical Research Center for Geriatric Disorders, Xiangya Hospital, Central South University, Changsha 410008, PR China; NATCM Key Laboratory of TCM Gan, Xiangya Hospital, Central South University, Changsha 410008, PR China; Xiangya Hospital, Central South University, Jiangxi, Nanchang 330004, PR China.
| | - Yang Wang
- Institute of Integrative Medicine, Department of Integrated Traditional Chinese and Western Medicine, Xiangya Hospital, Central South University, Changsha 410008, PR China; National Clinical Research Center for Geriatric Disorders, Xiangya Hospital, Central South University, Changsha 410008, PR China; NATCM Key Laboratory of TCM Gan, Xiangya Hospital, Central South University, Changsha 410008, PR China; Xiangya Hospital, Central South University, Jiangxi, Nanchang 330004, PR China.
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Shete PA, Ghatpande NS, Varma ME, Joshi PV, Suryavanshi KR, Misar AV, Jadhav SH, Apte PP, Kulkarni PP. Chronic dietary iron overload affects hepatic iron metabolism and cognitive behavior in Wistar rats. J Trace Elem Med Biol 2024; 84:127422. [PMID: 38492476 DOI: 10.1016/j.jtemb.2024.127422] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/21/2023] [Revised: 02/16/2024] [Accepted: 02/29/2024] [Indexed: 03/18/2024]
Abstract
BACKGROUND Iron accumulation in organs affects iron metabolism, leading to deleterious effects on the body. Previously, it was studied that high dietary iron in various forms and concentrations influences iron metabolism, resulting in iron accumulation in the liver and spleen and cognitive impairment. However, the actual mechanism and impact of long-term exposure to high dietary iron remain unknown. As a result, we postulated that iron overload caused by chronic exposure to excessive dietary iron supplementation would play a role in iron dyshomeostasis and inflammation in the liver and brain of Wistar rats. METHODS Animals were segregated into control, low iron (FAC-Ferric Ammonium Citrate 5000 ppm), and high iron dose group (FAC 20,000 ppm). The outcome of dietary iron overload on Wistar rats was evaluated in terms of body weight, biochemical markers, histological examination of liver and brain tissue, and cognitive-behavioral studies. Also, gene expression of rat brain tissue involving iron transporters Dmt1, TfR1, iron storage protein Fpn1, inflammatory markers Nf-kB, Tnf-α, Il-6, and hepcidin was performed. RESULTS Our data indicate that excess iron supplementation for 30 weeks leads to decreased body weight, increased serum iron levels, and decreased RBC levels in iron fed Wistar rats. Morris water maze (MWM) studies after 30 weeks showed increased escape latency in the high iron dose group compared with the control group. Histological studies of the high iron dose group showed an iron accumulation in the liver and brain loss of cellular architecture, and cellular degeneration was observed. Excess iron treatment showed upregulation of the Dmt1 gene in iron metabolism and a remarkable increase in the Nf-kB gene in rat brain tissue. CONCLUSION The results show chronic excess iron supplementation leads to iron accumulation in the liver, leading to inflammation in Wistar rats.
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Affiliation(s)
- Padmaja Anil Shete
- Bioprospecting Group, Agharkar Research Institute, G. G. Agarkar Road, Pune, Maharashtra 411004, India; Savitribai Phule Pune University, Ganeshkhind, Pune, Maharashtra 411007, India.
| | - Niraj Sudhir Ghatpande
- Bioprospecting Group, Agharkar Research Institute, G. G. Agarkar Road, Pune, Maharashtra 411004, India.
| | - Mokshada Evameshwar Varma
- Bioprospecting Group, Agharkar Research Institute, G. G. Agarkar Road, Pune, Maharashtra 411004, India.
| | - Pranav Vijay Joshi
- Bioprospecting Group, Agharkar Research Institute, G. G. Agarkar Road, Pune, Maharashtra 411004, India.
| | - Komal Ravindra Suryavanshi
- Bioprospecting Group, Agharkar Research Institute, G. G. Agarkar Road, Pune, Maharashtra 411004, India; Savitribai Phule Pune University, Ganeshkhind, Pune, Maharashtra 411007, India.
| | - Ashwini Vivek Misar
- Bioprospecting Group, Agharkar Research Institute, G. G. Agarkar Road, Pune, Maharashtra 411004, India.
| | - Sachin Hanumantrao Jadhav
- Nanobioscience Group, Agharkar Research Institute, G. G. Agarkar Road, Pune, Maharashtra 411004, India.
| | - Priti Parag Apte
- Bioprospecting Group, Agharkar Research Institute, G. G. Agarkar Road, Pune, Maharashtra 411004, India.
| | - Prasad Padmakar Kulkarni
- Bioprospecting Group, Agharkar Research Institute, G. G. Agarkar Road, Pune, Maharashtra 411004, India; Savitribai Phule Pune University, Ganeshkhind, Pune, Maharashtra 411007, India.
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Stabile F, Torromino G, Rajendran S, Del Vecchio G, Presutti C, Mannironi C, De Leonibus E, Mele A, Rinaldi A. Short-Term Memory Deficit Associates with miR-153-3p Upregulation in the Hippocampus of Middle-Aged Mice. Mol Neurobiol 2024; 61:3031-3041. [PMID: 37964090 DOI: 10.1007/s12035-023-03770-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2023] [Accepted: 11/03/2023] [Indexed: 11/16/2023]
Abstract
The early stages of ageing are a critical time window in which the ability to detect and identify precocious molecular and cognitive markers can make the difference in determining a healthy vs unhealthy course of ageing. Using the 6-different object task (6-DOT), a highly demanding hippocampal-dependent recognition memory task, we classified a population of middle-aged (12-month-old) CD1 male mice in Impaired and Unimpaired based on their short-term memory. This approach led us to identify a different microRNAs expression profile in the hippocampus of Impaired mice compared to Unimpaired ones. Among the dysregulated microRNAs, miR-153-3p was upregulated in the hippocampus of Impaired mice and appeared of high interest for its putative target genes and their possible implication in memory-related synaptic plasticity. We showed that intra-hippocampal injection of the miR-153-3p mimic in adult (3-month-old) mice is sufficient to induce a short-term memory deficit similar to that observed in middle-aged Impaired mice. Overall, these findings unravel a novel role for hippocampal miR-153-3p in modulating short-term memory that could be exploited to prevent early cognitive deficits in ageing.
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Affiliation(s)
- Francesca Stabile
- Department of Biology and Biotechnologies "Charles Darwin" (BBCD), Sapienza University of Rome, Rome, Italy
- Centre for Research in Neurobiology Daniel Bovet (CRiN), Sapienza University of Rome, Rome, Italy
| | - G Torromino
- Department of Biology and Biotechnologies "Charles Darwin" (BBCD), Sapienza University of Rome, Rome, Italy
- Department of Humanistic Studies, University of Naples Federico II, Naples, Italy
| | - S Rajendran
- Department of Biology and Biotechnologies "Charles Darwin" (BBCD), Sapienza University of Rome, Rome, Italy
- Centre for Research in Neurobiology Daniel Bovet (CRiN), Sapienza University of Rome, Rome, Italy
| | - G Del Vecchio
- Department of Biology and Biotechnologies "Charles Darwin" (BBCD), Sapienza University of Rome, Rome, Italy
| | - C Presutti
- Department of Biology and Biotechnologies "Charles Darwin" (BBCD), Sapienza University of Rome, Rome, Italy
| | - C Mannironi
- Institute of Molecular Biology and Pathology, c/o Department of Biology and Biotechnology, National Research Council, Sapienza University of Rome, Rome, Italy
| | - E De Leonibus
- Institute of Biochemistry and Cell Biology, National Research Council (IBBC-CNR), Monterotondo (Rome), Italy
- Telethon Institute of Genetics and Medicine (TIGEM), Pozzuoli (Naples), Italy
| | - A Mele
- Department of Biology and Biotechnologies "Charles Darwin" (BBCD), Sapienza University of Rome, Rome, Italy.
- Centre for Research in Neurobiology Daniel Bovet (CRiN), Sapienza University of Rome, Rome, Italy.
| | - A Rinaldi
- Department of Biology and Biotechnologies "Charles Darwin" (BBCD), Sapienza University of Rome, Rome, Italy.
- Centre for Research in Neurobiology Daniel Bovet (CRiN), Sapienza University of Rome, Rome, Italy.
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Kompotis K, Mang GM, Hubbard J, Jimenez S, Emmenegger Y, Polysopoulos C, Hor CN, Wigger L, Hébert SS, Mongrain V, Franken P. Cortical miR-709 links glutamatergic signaling to NREM sleep EEG slow waves in an activity-dependent manner. Proc Natl Acad Sci U S A 2024; 121:e2220532121. [PMID: 38207077 PMCID: PMC10801902 DOI: 10.1073/pnas.2220532121] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2022] [Accepted: 11/29/2023] [Indexed: 01/13/2024] Open
Abstract
MicroRNAs (miRNAs) are key post-transcriptional regulators of gene expression that have been implicated in a plethora of neuronal processes. Nevertheless, their role in regulating brain activity in the context of sleep has so far received little attention. To test their involvement, we deleted mature miRNAs in post-mitotic neurons at two developmental ages, i.e., in early adulthood using conditional Dicer knockout (cKO) mice and in adult mice using an inducible conditional Dicer cKO (icKO) line. In both models, electroencephalographic (EEG) activity was affected and the response to sleep deprivation (SD) altered; while the rapid-eye-movement sleep (REMS) rebound was compromised in both, the increase in EEG delta (1 to 4 Hz) power during non-REMS (NREMS) was smaller in cKO mice and larger in icKO mice compared to controls. We subsequently investigated the effects of SD on the forebrain miRNA transcriptome and found that the expression of 48 miRNAs was affected, and in particular that of the activity-dependent miR-709. In vivo inhibition of miR-709 in the brain increased EEG power during NREMS in the slow-delta (0.75 to 1.75 Hz) range, particularly after periods of prolonged wakefulness. Transcriptome analysis of primary cortical neurons in vitro revealed that miR-709 regulates genes involved in glutamatergic neurotransmission. A subset of these genes was also affected in the cortices of sleep-deprived, miR-709-inhibited mice. Our data implicate miRNAs in the regulation of EEG activity and indicate that miR-709 links neuronal activity during wakefulness to brain synchrony during sleep through the regulation of glutamatergic signaling.
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Affiliation(s)
- Konstantinos Kompotis
- Center for Integrative Genomics, University of Lausanne, LausanneCH-1015, Switzerland
- Institute of Pharmacology and Toxicology, University of Zurich, ZurichCH-8057, Switzerland
| | - Géraldine M. Mang
- Center for Integrative Genomics, University of Lausanne, LausanneCH-1015, Switzerland
| | - Jeffrey Hubbard
- Center for Integrative Genomics, University of Lausanne, LausanneCH-1015, Switzerland
| | - Sonia Jimenez
- Center for Integrative Genomics, University of Lausanne, LausanneCH-1015, Switzerland
| | - Yann Emmenegger
- Center for Integrative Genomics, University of Lausanne, LausanneCH-1015, Switzerland
| | - Christos Polysopoulos
- Department of Biostatistics, Epidemiology, Biostatistics and Prevention Institute, University of Zurich, ZurichCH-8057, Switzerland
| | - Charlotte N. Hor
- Center for Integrative Genomics, University of Lausanne, LausanneCH-1015, Switzerland
| | - Leonore Wigger
- Genomic Technologies Facility, Center for Integrative Genomics, University of Lausanne, LausanneCH-1015, Switzerland
| | - Sébastien S. Hébert
- Centre de recherche du Centre hospitalier universitaire de Québec-Université Laval, Axe Neurosciences, Québec, QCG1V 4G2, Canada
- Département de psychiatrie et de neurosciences, Faculté de médecine, Université Laval, Québec, QCG1V 0A6, Canada
| | - Valérie Mongrain
- Department of Neuroscience, Université de Montréal, Montréal, QCH3T 1J4, Canada
- Centre de recherche, Centre hospitalier de l’Université de Montréal, Montréal, QCH2X 0A9, Canada
- Center for Advanced Research in Sleep Medicine, Hôpital du Sacré-Coeur de Montréal, Montréal, QCH4J 1C5, Canada
| | - Paul Franken
- Center for Integrative Genomics, University of Lausanne, LausanneCH-1015, Switzerland
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Lipp HP, Krackow S, Turkes E, Benner S, Endo T, Russig H. IntelliCage: the development and perspectives of a mouse- and user-friendly automated behavioral test system. Front Behav Neurosci 2024; 17:1270538. [PMID: 38235003 PMCID: PMC10793385 DOI: 10.3389/fnbeh.2023.1270538] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2023] [Accepted: 10/18/2023] [Indexed: 01/19/2024] Open
Abstract
IntelliCage for mice is a rodent home-cage equipped with four corner structures harboring symmetrical double panels for operant conditioning at each of the two sides, either by reward (access to water) or by aversion (non-painful stimuli: air-puffs, LED lights). Corner visits, nose-pokes and actual licks at bottle-nipples are recorded individually using subcutaneously implanted transponders for RFID identification of up to 16 adult mice housed in the same home-cage. This allows for recording individual in-cage activity of mice and applying reward/punishment operant conditioning schemes in corners using workflows designed on a versatile graphic user interface. IntelliCage development had four roots: (i) dissatisfaction with standard approaches for analyzing mouse behavior, including standardization and reproducibility issues, (ii) response to handling and housing animal welfare issues, (iii) the increasing number of mouse models had produced a high work burden on classic manual behavioral phenotyping of single mice. and (iv), studies of transponder-chipped mice in outdoor settings revealed clear genetic behavioral differences in mouse models corresponding to those observed by classic testing in the laboratory. The latter observations were important for the development of home-cage testing in social groups, because they contradicted the traditional belief that animals must be tested under social isolation to prevent disturbance by other group members. The use of IntelliCages reduced indeed the amount of classic testing remarkably, while its flexibility was proved in a wide range of applications worldwide including transcontinental parallel testing. Essentially, two lines of testing emerged: sophisticated analysis of spontaneous behavior in the IntelliCage for screening of new genetic models, and hypothesis testing in many fields of behavioral neuroscience. Upcoming developments of the IntelliCage aim at improved stimulus presentation in the learning corners and videotracking of social interactions within the IntelliCage. Its main advantages are (i) that mice live in social context and are not stressfully handled for experiments, (ii) that studies are not restricted in time and can run in absence of humans, (iii) that it increases reproducibility of behavioral phenotyping worldwide, and (iv) that the industrial standardization of the cage permits retrospective data analysis with new statistical tools even after many years.
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Affiliation(s)
- Hans-Peter Lipp
- Faculty of Medicine, Institute of Evolutionary Medicine, University of Zürich, Zürich, Switzerland
| | - Sven Krackow
- Institute of Pathology and Molecular Pathology, University Hospital Zürich, Zürich, Switzerland
| | - Emir Turkes
- Queen Square Institute of Neurology, University College London, London, United Kingdom
| | - Seico Benner
- Center for Health and Environmental Risk Research, National Institute for Environmental Studies, Ibaraki, Japan
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Çabukusta Acar A, Yoldaş ŞB, Gencer ES, Aycan İÖ, Sanlı SH. The relationship between prognosis of patients with traumatic brain injury and microRNA biogenesis proteins. ULUS TRAVMA ACIL CER 2023; 29:1228-1236. [PMID: 37889026 PMCID: PMC10771237 DOI: 10.14744/tjtes.2023.54859] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2023] [Revised: 05/26/2023] [Accepted: 08/14/2023] [Indexed: 10/28/2023]
Abstract
BACKGROUND This study aims to investigate whether the expression levels of proteins involved in microRNA (miRNA) biogenesis vary in early- and late-stage traumatic brain injury (TBI) patients and to evaluate its effect on prognosis. METHODS Dicer, Drosha, DiGeorge Syndrome Critical Region eight (DGCR8), Exportin5 (XPO5), and Argonaute2 (AGO2) levels were measured in the blood samples of severe TBI patients collected 4-6 h and 72 h after the trauma and compared with the control group. Prognostic follow-up of the patients was performed using the Glasgow Coma Scale score. RESULTS There were no statistically significant changes in the expression of the miRNA biogenesis proteins Dicer, Drosha, DGCR8, XPO5, and AGO2 in patients with severe TBI. However, the expression of Dicer increased in the patients who improved from the severe TBI grade to the mild TBI grade, and the expression of AGO2 decreased in most of these patients. The Dicer expression profile was found to increase in patients discharged from the intensive care unit in a short time. CONCLUSION MicroRNAs and their biogenesis proteins may guide prognostic and therapeutic decisions for patients with TBI in the future.
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Affiliation(s)
| | - Şükran Burçak Yoldaş
- Department of Medical Biology and Genetics, Faculty of Medicine, Akdeniz University, Antalya-Türkiye
| | | | - İlker Öngüç Aycan
- Department of Anesthesiology, Faculty of Medicine, Akdeniz University, Antalya-Türkiye
| | - Suat Hayri Sanlı
- Department of Anesthesiology, Faculty of Medicine, Akdeniz University, Antalya-Türkiye
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Cefis M, Chaney R, Wirtz J, Méloux A, Quirié A, Leger C, Prigent-Tessier A, Garnier P. Molecular mechanisms underlying physical exercise-induced brain BDNF overproduction. Front Mol Neurosci 2023; 16:1275924. [PMID: 37868812 PMCID: PMC10585026 DOI: 10.3389/fnmol.2023.1275924] [Citation(s) in RCA: 10] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2023] [Accepted: 09/18/2023] [Indexed: 10/24/2023] Open
Abstract
Accumulating evidence supports that physical exercise (EX) is the most effective non-pharmacological strategy to improve brain health. EX prevents cognitive decline associated with age and decreases the risk of developing neurodegenerative diseases and psychiatric disorders. These positive effects of EX can be attributed to an increase in neurogenesis and neuroplastic processes, leading to learning and memory improvement. At the molecular level, there is a solid consensus to involve the neurotrophin brain-derived neurotrophic factor (BDNF) as the crucial molecule for positive EX effects on the brain. However, even though EX incontestably leads to beneficial processes through BDNF expression, cellular sources and molecular mechanisms underlying EX-induced cerebral BDNF overproduction are still being elucidated. In this context, the present review offers a summary of the different molecular mechanisms involved in brain's response to EX, with a specific focus on BDNF. It aims to provide a cohesive overview of the three main mechanisms leading to EX-induced brain BDNF production: the neuronal-dependent overexpression, the elevation of cerebral blood flow (hemodynamic hypothesis), and the exerkine signaling emanating from peripheral tissues (humoral response). By shedding light on these intricate pathways, this review seeks to contribute to the ongoing elucidation of the relationship between EX and cerebral BDNF expression, offering valuable insights into the potential therapeutic implications for brain health enhancement.
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Affiliation(s)
- Marina Cefis
- Département des Sciences de l’Activité Physique, Faculté des Sciences, Université du Québec à Montréal, Montreal, QC, Canada
- INSERM UMR1093-CAPS, Université de Bourgogne, UFR des Sciences de Santé, Dijon, France
| | - Remi Chaney
- INSERM UMR1093-CAPS, Université de Bourgogne, UFR des Sciences de Santé, Dijon, France
| | - Julien Wirtz
- INSERM UMR1093-CAPS, Université de Bourgogne, UFR des Sciences de Santé, Dijon, France
| | - Alexandre Méloux
- INSERM UMR1093-CAPS, Université de Bourgogne, UFR des Sciences de Santé, Dijon, France
| | - Aurore Quirié
- INSERM UMR1093-CAPS, Université de Bourgogne, UFR des Sciences de Santé, Dijon, France
| | - Clémence Leger
- INSERM UMR1093-CAPS, Université de Bourgogne, UFR des Sciences de Santé, Dijon, France
| | - Anne Prigent-Tessier
- INSERM UMR1093-CAPS, Université de Bourgogne, UFR des Sciences de Santé, Dijon, France
| | - Philippe Garnier
- INSERM UMR1093-CAPS, Université de Bourgogne, UFR des Sciences de Santé, Dijon, France
- Département Génie Biologique, Institut Universitaire de Technologie, Dijon, France
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Rezayof A, Ghasemzadeh Z, Sahafi OH. Addictive drugs modify neurogenesis, synaptogenesis and synaptic plasticity to impair memory formation through neurotransmitter imbalances and signaling dysfunction. Neurochem Int 2023; 169:105572. [PMID: 37423274 DOI: 10.1016/j.neuint.2023.105572] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2023] [Revised: 07/01/2023] [Accepted: 07/05/2023] [Indexed: 07/11/2023]
Abstract
Drug abuse changes neurophysiological functions at multiple cellular and molecular levels in the addicted brain. Well-supported scientific evidence suggests that drugs negatively affect memory formation, decision-making and inhibition, and emotional and cognitive behaviors. The mesocorticolimbic brain regions are involved in reward-related learning and habitual drug-seeking/taking behaviors to develop physiological and psychological dependence on the drugs. This review highlights the importance of specific drug-induced chemical imbalances resulting in memory impairment through various neurotransmitter receptor-mediated signaling pathways. The mesocorticolimbic modifications in the expression levels of brain-derived neurotrophic factor (BDNF) and the cAMP-response element binding protein (CREB) impair reward-related memory formation following drug abuse. The contributions of protein kinases and microRNAs (miRNAs), along with the transcriptional and epigenetic regulation have also been considered in memory impairment underlying drug addiction. Overall, we integrate the research on various types of drug-induced memory impairment in distinguished brain regions and provide a comprehensive review with clinical implications addressing the upcoming studies.
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Affiliation(s)
- Ameneh Rezayof
- Department of Animal Biology, School of Biology, College of Science, University of Tehran, Tehran, Iran.
| | - Zahra Ghasemzadeh
- Department of Animal Biology, School of Biology, College of Science, University of Tehran, Tehran, Iran
| | - Oveis Hosseinzadeh Sahafi
- Department of Neurophysiology, Graduate School of Medicine, The University of Tokyo, Tokyo, 113-0033, Japan
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Olufunmilayo EO, Holsinger RMD. Roles of Non-Coding RNA in Alzheimer's Disease Pathophysiology. Int J Mol Sci 2023; 24:12498. [PMID: 37569871 PMCID: PMC10420049 DOI: 10.3390/ijms241512498] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2023] [Revised: 07/25/2023] [Accepted: 08/03/2023] [Indexed: 08/13/2023] Open
Abstract
Alzheimer's disease (AD) is a chronic neurodegenerative disorder that is accompanied by deficits in memory and cognitive functions. The disease is pathologically characterised by the accumulation and aggregation of an extracellular peptide referred to as amyloid-β (Aβ) in the form of amyloid plaques and the intracellular aggregation of a hyperphosphorelated protein tau in the form of neurofibrillary tangles (NFTs) that cause neuroinflammation, synaptic dysfunction, and oxidative stress. The search for pathomechanisms leading to disease onset and progression has identified many key players that include genetic, epigenetic, behavioural, and environmental factors, which lend support to the fact that this is a multi-faceted disease where failure in various systems contributes to disease onset and progression. Although the vast majority of individuals present with the sporadic (non-genetic) form of the disease, dysfunctions in numerous protein-coding and non-coding genes have been implicated in mechanisms contributing to the disease. Recent studies have provided strong evidence for the association of non-coding RNAs (ncRNAs) with AD. In this review, we highlight the current findings on changes observed in circular RNA (circRNA), microRNA (miRNA), short interfering RNA (siRNA), piwi-interacting RNA (piRNA), and long non-coding RNA (lncRNA) in AD. Variations in these ncRNAs could potentially serve as biomarkers or therapeutic targets for the diagnosis and treatment of Alzheimer's disease. We also discuss the results of studies that have targeted these ncRNAs in cellular and animal models of AD with a view for translating these findings into therapies for Alzheimer's disease.
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Affiliation(s)
- Edward O. Olufunmilayo
- Laboratory of Molecular Neuroscience and Dementia, School of Medical Sciences, Faculty of Medicine and Health, The University of Sydney, Camperdown, NSW 2050, Australia;
- Department of Medicine, University College Hospital, Queen Elizabeth Road, Oritamefa, Ibadan 200212, Nigeria
| | - R. M. Damian Holsinger
- Laboratory of Molecular Neuroscience and Dementia, School of Medical Sciences, Faculty of Medicine and Health, The University of Sydney, Camperdown, NSW 2050, Australia;
- Neuroscience, School of Medical Sciences, Faculty of Medicine and Health, The University of Sydney, Sydney, NSW 2006, Australia
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10
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Roy B, Dwivedi Y. An insight into the sprawling microverse of microRNAs in depression pathophysiology and treatment response. Neurosci Biobehav Rev 2023; 146:105040. [PMID: 36639069 PMCID: PMC9974865 DOI: 10.1016/j.neubiorev.2023.105040] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2022] [Revised: 01/06/2023] [Accepted: 01/08/2023] [Indexed: 01/12/2023]
Abstract
Stress-related neuropathologies are pivotal in developing major depressive disorder (MDD) and are often governed by gene-regulatory changes. Being a stress-responsive gene-regulatory factor, microRNAs (miRNAs) have tremendous biomolecular potential to define an altered gene-regulatory landscape in the MDD brain. MiRNAs' regulatory roles in the MDD brain are closely aligned with changes in plasticity, neurogenesis, and stress-axis functions. MiRNAs act at the epigenetic interface between stress-induced environmental stimuli and cellular pathologies by triggering large-scale gene expression changes in a highly coordinated fashion. The parallel changes in peripheral circulation may provide an excellent opportunity for miRNA to devise more effective treatment strategies and help explore their potential as biomarkers in treatment response. This review discusses the role of miRNAs as epigenetic modifiers in the etiopathogenesis of MDD. Concurrently, key research is highlighted to show the progress in using miRNAs as predictive biomarkers for treatment response.
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Affiliation(s)
- Bhaskar Roy
- Department of Psychiatry and Behavioral Neurobiology, University of Alabama at Birmingham, Birmingham, AL 35294, USA
| | - Yogesh Dwivedi
- Department of Psychiatry and Behavioral Neurobiology, University of Alabama at Birmingham, Birmingham, AL 35294, USA.
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11
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Lekk I, Cabrera-Cabrera F, Turconi G, Tuvikene J, Esvald EE, Rähni A, Casserly L, Garton DR, Andressoo JO, Timmusk T, Koppel I. Untranslated regions of brain-derived neurotrophic factor mRNA control its translatability and subcellular localization. J Biol Chem 2023; 299:102897. [PMID: 36639028 PMCID: PMC9943900 DOI: 10.1016/j.jbc.2023.102897] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2022] [Revised: 01/04/2023] [Accepted: 01/05/2023] [Indexed: 01/12/2023] Open
Abstract
Brain-derived neurotrophic factor (BDNF) promotes neuronal survival and growth during development. In the adult nervous system, BDNF is important for synaptic function in several biological processes such as memory formation and food intake. In addition, BDNF has been implicated in development and maintenance of the cardiovascular system. The Bdnf gene comprises several alternative untranslated 5' exons and two variants of 3' UTRs. The effects of these entire alternative UTRs on translatability have not been established. Using reporter and translating ribosome affinity purification analyses, we show that prevalent Bdnf 5' UTRs, but not 3' UTRs, exert a repressive effect on translation. However, contrary to previous reports, we do not detect a significant effect of neuronal activity on BDNF translation. In vivo analysis via knock-in conditional replacement of Bdnf 3' UTR by bovine growth hormone 3' UTR reveals that Bdnf 3' UTR is required for efficient Bdnf mRNA and BDNF protein production in the brain, but acts in an inhibitory manner in lung and heart. Finally, we show that Bdnf mRNA is enriched in rat brain synaptoneurosomes, with higher enrichment detected for exon I-containing transcripts. In conclusion, these results uncover two novel aspects in understanding the function of Bdnf UTRs. First, the long Bdnf 3' UTR does not repress BDNF expression in the brain. Second, exon I-derived 5' UTR has a distinct role in subcellular targeting of Bdnf mRNA.
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Affiliation(s)
- Ingrid Lekk
- Department of Chemistry and Biotechnology, Tallinn University of Technology, Tallinn, Estonia
| | | | - Giorgio Turconi
- Helsinki Institute of Life Science, University of Helsinki, Helsinki, Finland,Department of Pharmacology, Faculty of Medicine, University of Helsinki, Helsinki, Finland
| | - Jürgen Tuvikene
- Department of Chemistry and Biotechnology, Tallinn University of Technology, Tallinn, Estonia,Protobios Llc, Tallinn, Estonia
| | - Eli-Eelika Esvald
- Department of Chemistry and Biotechnology, Tallinn University of Technology, Tallinn, Estonia,Protobios Llc, Tallinn, Estonia
| | - Annika Rähni
- Department of Chemistry and Biotechnology, Tallinn University of Technology, Tallinn, Estonia,Protobios Llc, Tallinn, Estonia
| | - Laoise Casserly
- Helsinki Institute of Life Science, University of Helsinki, Helsinki, Finland,Department of Pharmacology, Faculty of Medicine, University of Helsinki, Helsinki, Finland
| | - Daniel R. Garton
- Helsinki Institute of Life Science, University of Helsinki, Helsinki, Finland,Department of Pharmacology, Faculty of Medicine, University of Helsinki, Helsinki, Finland
| | - Jaan-Olle Andressoo
- Helsinki Institute of Life Science, University of Helsinki, Helsinki, Finland; Department of Pharmacology, Faculty of Medicine, University of Helsinki, Helsinki, Finland; Division of Neurogeriatrics, Center for Alzheimer Research, Department of Neurobiology, Care Sciences and Society (NVS), Karolinska Institutet, Stockholm, Sweden.
| | - Tõnis Timmusk
- Department of Chemistry and Biotechnology, Tallinn University of Technology, Tallinn, Estonia; Protobios Llc, Tallinn, Estonia.
| | - Indrek Koppel
- Department of Chemistry and Biotechnology, Tallinn University of Technology, Tallinn, Estonia.
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12
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Xuan C, Yang E, Zhao S, Xu J, Li P, Zhang Y, Jiang Z, Ding X. Regulation of LncRNAs and microRNAs in neuronal development and disease. PeerJ 2023; 11:e15197. [PMID: 37038472 PMCID: PMC10082570 DOI: 10.7717/peerj.15197] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2022] [Accepted: 03/15/2023] [Indexed: 04/12/2023] Open
Abstract
Non-coding RNAs (ncRNAs) are RNAs that do not encode proteins but play important roles in regulating cellular processes. Multiple studies over the past decade have demonstrated the role of microRNAs (miRNAs) in cancer, in which some miRNAs can act as biomarkers or provide therapy target. Accumulating evidence also points to the importance of long non-coding RNAs (lncRNAs) in regulating miRNA-mRNA networks. An increasing number of ncRNAs have been shown to be involved in the regulation of cellular processes, and dysregulation of ncRNAs often heralds disease. As the population ages, the incidence of neurodegenerative diseases is increasing, placing enormous pressure on global health systems. Given the excellent performance of ncRNAs in early cancer screening and treatment, here we attempted to aggregate and analyze the regulatory functions of ncRNAs in neuronal development and disease. In this review, we summarize current knowledge on ncRNA taxonomy, biogenesis, and function, and discuss current research progress on ncRNAs in relation to neuronal development, differentiation, and neurodegenerative diseases.
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Affiliation(s)
- Cheng Xuan
- College of Life Sciences and Medicine, Zhejiang Sci-Tech University, Hangzhou, Zhejiang Province, China
| | - Enyu Yang
- College of Life Sciences and Medicine, Zhejiang Sci-Tech University, Hangzhou, Zhejiang Province, China
| | - Shuo Zhao
- College of Life Sciences and Medicine, Zhejiang Sci-Tech University, Hangzhou, Zhejiang Province, China
| | - Juan Xu
- College of Life Sciences and Medicine, Zhejiang Sci-Tech University, Hangzhou, Zhejiang Province, China
| | - Peihang Li
- College of Life Sciences and Medicine, Zhejiang Sci-Tech University, Hangzhou, Zhejiang Province, China
| | - Yaping Zhang
- Department of Oncology, Zhejiang Xiaoshan Hospital, Hangzhou, Zhejiang Province, China
| | - Zhenggang Jiang
- Department of Science Research and Information Management, Zhejiang Provincial Centers for Disease Control and Prevention, Hangzhou, Zhejiang Province, China
| | - Xianfeng Ding
- College of Life Sciences and Medicine, Zhejiang Sci-Tech University, Hangzhou, Zhejiang Province, China
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13
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Kemenes G, Benjamin PR, Kemenes I. The role of non-coding RNAs in the formation of long-term associative memory after single-trial learning in Lymnaea. Front Behav Neurosci 2022; 16:1005867. [PMID: 36353518 PMCID: PMC9639457 DOI: 10.3389/fnbeh.2022.1005867] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2022] [Accepted: 09/26/2022] [Indexed: 11/20/2022] Open
Abstract
Investigations of the molecular mechanisms of long-term associative memory have revealed key roles for a number of highly evolutionarily conserved molecular pathways in a variety of different vertebrate and invertebrate model systems. One such system is the pond snail Lymnaea stagnalis, in which, like in other systems, the transcription factors CREB1 and CREB2 and the enzyme NOS play essential roles in the consolidation of long-term associative memory. More recently, epigenetic control mechanisms, such as DNA methylation, histone modifications, and control of gene expression by non-coding RNAs also have been found to play important roles in all model systems. In this minireview, we will focus on how, in Lymnaea, even a single episode of associative learning can activate CREB and NO dependent cascades due to the training-induced up- or downregulation of the expression levels of recently identified short and long non-coding RNAs.
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14
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Mezheritskiy MI, Dyakonova VE. Direct and Inherited Epigenetic Changes in the Nervous System Caused by Intensive Locomotion: Possible Adaptive Significance. Russ J Dev Biol 2022. [DOI: 10.1134/s1062360422050058] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
Abstract
This review is devoted to the analysis of works that investigated the long-term effects of species-specific forms of intensive locomotion on the cognitive functions of animals and humans, which can be transmitted to the next generation. To date, the anxiolytic and cognitive-enhancing long-term effects of intensive locomotion have been demonstrated in humans, rodents, fish, insects, mollusks, and nematodes. In rodents, changes in the central nervous system caused by intense locomotion can be transmitted through the maternal and paternal line to the descendants of the first generation. These include reduced anxiety, improved spatial learning and memory, increased levels of brain neurotrophic factor and vascular endothelial growth factor in the hippocampus and frontal cortex. The shift of the balance of histone acetylation in the hippocampus of rodents towards hyperacetylation, and the balance of DNA methylation towards demethylation manifests itself both as a direct and as a first-generation inherited effect of motor activity. The question about the mechanisms that link locomotion with an increase in the plasticity of a genome in the brain of descendants remains poorly understood, and invertebrate model organisms can be an ideal object for its study. Currently, there is a lack of a theoretical model explaining why motor activity leads to long-term improvement of some cognitive functions that can be transmitted to the next generation and why such an influence could have appeared in evolution. The answer to these questions is not only of fundamental interest, but it is necessary for predicting therapeutic and possible side effects of motor activity in humans. In this regard, the article pays special attention to the review of ideas on the evolutionary aspects of the problem. We propose our own hypothesis, according to which the activating effect of intensive locomotion on the function of the nervous system could have been formed in evolution as a preadaptation to a possible entry into a new environment.
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15
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Cheng L, Su Y, Zhi K, Xie Y, Zhang C, Meng X. Conditional deletion of MAD2B in forebrain neurons enhances hippocampus-dependent learning and memory in mice. Front Cell Neurosci 2022; 16:956029. [PMID: 36212696 PMCID: PMC9538151 DOI: 10.3389/fncel.2022.956029] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2022] [Accepted: 08/24/2022] [Indexed: 11/13/2022] Open
Abstract
Mitotic arrest deficient 2-like protein 2 (MAD2B) is not only a DNA damage repair agent but also a cell cycle regulator that is widely expressed in the hippocampus and the cerebral cortex. However, the functions of MAD2B in hippocampal and cerebral cortical neurons are poorly understood. In this study, we crossed MAD2Bflox/flox and calcium/calmodulin-dependent protein kinase II alpha (Camk2a)-Cre mice to conditionally knock out MAD2B in the forebrain pyramidal neurons by the Cre/loxP recombinase system. First, RNA sequencing suggested that the differentially expressed genes in the hippocampus and the cerebral cortex between the WT and the MAD2B cKO mice were related to learning and memory. Then, the results of behavioral tests, including the Morris water maze test, the novel object recognition test, and the contextual fear conditioning experiment, suggested that the learning and memory abilities of the MAD2B cKO mice had improved. Moreover, conditional knockout of MAD2B increased the number of neurons without affecting the number of glial cells in the hippocampal CA1 and the cerebral cortex. At the same time, the number of doublecortin-positive (DCX+) cells was increased in the dentate gyrus (DG) of the MAD2B cKO mice. In addition, as shown by Golgi staining, the MAD2B cKO mice had more mushroom-like and long-like spines than the WT mice. Transmission electron microscopy (TEM) revealed that spine synapses increased and shaft synapses decreased in the CA1 of the MAD2B cKO mice. Taken together, our findings indicated that MAD2B plays an essential role in regulating learning and memory.
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Affiliation(s)
- Li Cheng
- Department of Neurobiology, Institute of Brain Research, School of Basic Medical Sciences, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Yanfang Su
- Department of Neurobiology, Institute of Brain Research, School of Basic Medical Sciences, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Kaining Zhi
- Department of Neurobiology, Institute of Brain Research, School of Basic Medical Sciences, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Yaru Xie
- Department of Neurobiology, Institute of Brain Research, School of Basic Medical Sciences, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
- Department of Nephrology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Chun Zhang
- Department of Nephrology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
- *Correspondence: Chun Zhang
| | - Xianfang Meng
- Department of Neurobiology, Institute of Brain Research, School of Basic Medical Sciences, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
- Xianfang Meng
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16
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Shang A, Bieszczad KM. Epigenetic mechanisms regulate cue memory underlying discriminative behavior. Neurosci Biobehav Rev 2022; 141:104811. [PMID: 35961385 DOI: 10.1016/j.neubiorev.2022.104811] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2022] [Revised: 06/15/2022] [Accepted: 08/01/2022] [Indexed: 12/01/2022]
Abstract
The burgeoning field of neuroepigenetics has introduced chromatin modification as an important interface between experience and brain function. For example, epigenetic mechanisms like histone acetylation and DNA methylation operate throughout a lifetime to powerfully regulate gene expression in the brain that is required for experiences to be transformed into long-term memories. This review highlights emerging evidence from sensory models of memory that converge on the premise that epigenetic regulation of activity-dependent transcription in the sensory brain facilitates highly precise memory recall. Chromatin modifications may be key for neurophysiological responses to transient sensory cue features experienced in the "here and now" to be recapitulated over the long term. We conclude that the function of epigenetic control of sensory system neuroplasticity is to regulate the amount and type of sensory information retained in long-term memories by regulating neural representations of behaviorally relevant cues that guide behavior. This is of broad importance in the neuroscience field because there are few circumstances in which behavioral acts are devoid of an initiating sensory experience.
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Affiliation(s)
- Andrea Shang
- Dept. of Psychology - Behavioral and Systems Neuroscience, Rutgers University - New Brunswick, 152 Frelinghuysen Road, Piscataway, NJ 08854, USA
| | - Kasia M Bieszczad
- Dept. of Psychology - Behavioral and Systems Neuroscience, Rutgers University - New Brunswick, 152 Frelinghuysen Road, Piscataway, NJ 08854, USA; Rutgers Center for Cognitive Science (RuCCS), Rutgers University, Piscataway, NJ 08854, USA; Department of Otolaryngology - Head and Neck Surgery, Rutgers Robert Wood Johnson Medical School, New Brunswick, NJ 08854, USA.
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17
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Kuzniewska B, Rejmak K, Nowacka A, Ziółkowska M, Milek J, Magnowska M, Gruchota J, Gewartowska O, Borsuk E, Salamian A, Dziembowski A, Radwanska K, Dziembowska M. Disrupting interaction between miR-132 and Mmp9 3'UTR improves synaptic plasticity and memory in mice. Front Mol Neurosci 2022; 15:924534. [PMID: 35992198 PMCID: PMC9389266 DOI: 10.3389/fnmol.2022.924534] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2022] [Accepted: 07/18/2022] [Indexed: 11/15/2022] Open
Abstract
As microRNAs have emerged to be important regulators of molecular events occurring at the synapses, the new questions about their regulatory effect on the behavior have araised. In the present study, we show for the first time that the dysregulated specific targeting of miR132 to Mmp9 mRNA in the mouse brain results in the increased level of Mmp9 protein, which affects synaptic plasticity and has an effect on memory formation. Our data points at the importance of complex and precise regulation of the Mmp9 level by miR132 in the brain.
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Affiliation(s)
- Bozena Kuzniewska
- Laboratory of Molecular Basis of Synaptic Plasticity, Centre of New Technologies, University of Warsaw, Warsaw, Poland
| | - Karolina Rejmak
- Laboratory of Molecular Basis of Synaptic Plasticity, Centre of New Technologies, University of Warsaw, Warsaw, Poland
| | - Agata Nowacka
- Laboratory of Molecular Basis of Behavior, Nencki Institute of Experimental Biology of Polish Academy of Sciences, Warsaw, Poland
| | - Magdalena Ziółkowska
- Laboratory of Molecular Basis of Behavior, Nencki Institute of Experimental Biology of Polish Academy of Sciences, Warsaw, Poland
| | - Jacek Milek
- Laboratory of Molecular Basis of Synaptic Plasticity, Centre of New Technologies, University of Warsaw, Warsaw, Poland
| | - Marta Magnowska
- Laboratory of Molecular Basis of Synaptic Plasticity, Centre of New Technologies, University of Warsaw, Warsaw, Poland
| | - Jakub Gruchota
- Laboratory of RNA Biology, International Institute of Molecular and Cell Biology, Warsaw, Poland
| | - Olga Gewartowska
- Laboratory of RNA Biology, International Institute of Molecular and Cell Biology, Warsaw, Poland
| | - Ewa Borsuk
- Faculty of Biology, University of Warsaw, Warsaw, Poland
| | - Ahmad Salamian
- Laboratory of Molecular Basis of Behavior, Nencki Institute of Experimental Biology of Polish Academy of Sciences, Warsaw, Poland
| | - Andrzej Dziembowski
- Laboratory of RNA Biology, International Institute of Molecular and Cell Biology, Warsaw, Poland
- Faculty of Biology, University of Warsaw, Warsaw, Poland
| | - Kasia Radwanska
- Laboratory of Molecular Basis of Behavior, Nencki Institute of Experimental Biology of Polish Academy of Sciences, Warsaw, Poland
| | - Magdalena Dziembowska
- Laboratory of Molecular Basis of Synaptic Plasticity, Centre of New Technologies, University of Warsaw, Warsaw, Poland
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18
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Mohammadi AH, Seyedmoalemi S, Moghanlou M, Akhlagh SA, Talaei Zavareh SA, Hamblin MR, Jafari A, Mirzaei H. MicroRNAs and Synaptic Plasticity: From Their Molecular Roles to Response to Therapy. Mol Neurobiol 2022; 59:5084-5102. [PMID: 35666404 DOI: 10.1007/s12035-022-02907-2] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2021] [Accepted: 05/25/2022] [Indexed: 12/24/2022]
Abstract
Synaptic plasticity is the ability of synapses to weaken or strengthen over time, in response to changes in the activity of the neurons. It is orchestrated by a variety of genes, proteins, and external and internal factors, especially epigenetic factors. MicroRNAs (miRNAs) are well-acknowledged epigenetic modulators that regulate the translation and degradation of target genes in the nervous system. Increasing evidence has suggested that a number of miRNAs play important roles in modulating various aspects of synaptic plasticity. The deregulation of miRNAs could be associated with pathological alterations in synaptic plasticity, which could lead to different CNS-related diseases. Herein, we provide an update on the role of miRNAs in governing synaptic plasticity. In addition, we also summarize recent researches on the role of miRNAs in drug addiction, and their targets and mechanism of action. Understanding of the way in which miRNAs contribute to synaptic plasticity provides rational clues in establishing the novel biomarkers and new therapeutic strategies for the diagnosis and treatment of plasticity-related diseases and drug addiction.
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Affiliation(s)
- Amir Hossein Mohammadi
- Research Center for Biochemistry and Nutrition in Metabolic Diseases, Institute for Basic Sciences, Kashan University of Medical Sciences, Kashan, Iran
- Student Research Committee, Kashan University of Medical Sciences, Kashan, Iran
| | - Seyedvahid Seyedmoalemi
- Behavioral Sciences Research Center, Isfahan University of Medical Sciences, Isfahan, Iran
- Student Research Committee, School of Medicine, Isfahan University of Medical Sciences, Isfahan, Iran
| | - Mahsa Moghanlou
- Department of Psychiatry, School of Medicine, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | | | | | - Michael R Hamblin
- Laser Research Centre, Faculty of Health Science, University of Johannesburg, Doornfontein, 2028, South Africa
| | - Ameneh Jafari
- Advanced Therapy Medicinal Product (ATMP) Department, Breast Cancer Research Center, Motamed Cancer Institute, ACECR, Tehran, Iran.
- Proteomics Research Center, Shahid Beheshti University of Medical Sciences, Tehran, Iran.
| | - Hamed Mirzaei
- Research Center for Biochemistry and Nutrition in Metabolic Diseases, Institute for Basic Sciences, Kashan University of Medical Sciences, Kashan, Iran.
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19
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Ma Y, Murgia N, Liu Y, Li Z, Sirakawin C, Konovalov R, Kovzel N, Xu Y, Kang X, Tiwari A, Mwangi PM, Sun D, Erfle H, Konopka W, Lai Q, Najam SS, Vinnikov IA. Neuronal miR-29a protects from obesity in adult mice. Mol Metab 2022; 61:101507. [PMID: 35490865 PMCID: PMC9114687 DOI: 10.1016/j.molmet.2022.101507] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/02/2022] [Revised: 04/12/2022] [Accepted: 04/25/2022] [Indexed: 12/30/2022] Open
Abstract
Objective Obesity, a growing threat to the modern society, represents an imbalance of metabolic queues that normally signal to the arcuate hypothalamic nucleus, a critical brain region sensing and regulating energy homeostasis. This is achieved by various neurons many of which developmentally originate from the proopiomelanocortin (POMC)-expressing lineage. Within the mature neurons originating from this lineage, we aimed to identify non-coding genes in control of metabolic function in the adulthood. Methods In this work, we used microRNA mimic delivery and POMCCre-dependent CRISPR-Cas9 knock-out strategies in young or aged mice. Importantly, we also used CRISPR guides directing suicide cleavage of Cas9 to limit the off-target effects. Results Here we found that mature neurons originating from the POMC lineage employ miR-29a to protect against insulin resistance obesity, hyperphagia, decreased energy expenditure and obesity. Moreover, we validated the miR-29 family as a prominent regulator of the PI3K-Akt-mTOR pathway. Within the latter, we identified a direct target of miR-29a-3p, Nras, which was up-regulated in those and only those mature POMCCreCas9 neurons that were effectively transduced by anti-miR-29 CRISPR-equipped construct. Moreover, POMCCre-dependent co-deletion of Nras in mature neurons attenuated miR-29 depletion-induced obesity. Conclusions Thus, the first to our knowledge case of in situ Cre-dependent CRISPR-Cas9-mediated knock-out of microRNAs in a specific hypothalamic neuronal population helped us to decipher a critical metabolic circuit in adult mice. This work significantly extends our understanding about the involvement of neuronal microRNAs in homeostatic regulation. Delivery of miR-29a-3p to the arcuate hypothalamic nucleus attenuates obesity. Knock-out of genes in mature neurons by Cre-dependent CRISPR/Cas9 technique involving Cas9-cleaving sgRNAs to limit off-target effects. Deletion of miR-29a in mature PomcCre neurons leads to early-onset insulin resistance and later to hyperphagia and decreased energy expenditure. POMCCre-restricted deletion of miR-29a causes cell-autonomous Nras up-regulation leading to obesity. POMCCre-restricted knock-out of Nras, a direct target of miR-29a-3p, attenuates obesity in mice.
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Affiliation(s)
- Yuan Ma
- Laboratory of Molecular Neurobiology, Sheng Yushou Center of Cell Biology and Immunology, Department of Genetics and Developmental Biology, School of Life Sciences and Biotechnology, Shanghai Jiao Tong University, Shanghai, China
| | - Nicola Murgia
- Laboratory of Molecular Neurobiology, Sheng Yushou Center of Cell Biology and Immunology, Department of Genetics and Developmental Biology, School of Life Sciences and Biotechnology, Shanghai Jiao Tong University, Shanghai, China
| | - Yu Liu
- Laboratory of Molecular Neurobiology, Sheng Yushou Center of Cell Biology and Immunology, Department of Genetics and Developmental Biology, School of Life Sciences and Biotechnology, Shanghai Jiao Tong University, Shanghai, China
| | - Zixuan Li
- Laboratory of Molecular Neurobiology, Sheng Yushou Center of Cell Biology and Immunology, Department of Genetics and Developmental Biology, School of Life Sciences and Biotechnology, Shanghai Jiao Tong University, Shanghai, China
| | - Chaweewan Sirakawin
- Laboratory of Molecular Neurobiology, Sheng Yushou Center of Cell Biology and Immunology, Department of Genetics and Developmental Biology, School of Life Sciences and Biotechnology, Shanghai Jiao Tong University, Shanghai, China
| | - Ruslan Konovalov
- Laboratory of Molecular Neurobiology, Sheng Yushou Center of Cell Biology and Immunology, Department of Genetics and Developmental Biology, School of Life Sciences and Biotechnology, Shanghai Jiao Tong University, Shanghai, China
| | - Nikolai Kovzel
- Laboratory of Molecular Neurobiology, Sheng Yushou Center of Cell Biology and Immunology, Department of Genetics and Developmental Biology, School of Life Sciences and Biotechnology, Shanghai Jiao Tong University, Shanghai, China
| | - Yang Xu
- Laboratory of Molecular Neurobiology, Sheng Yushou Center of Cell Biology and Immunology, Department of Genetics and Developmental Biology, School of Life Sciences and Biotechnology, Shanghai Jiao Tong University, Shanghai, China
| | - Xuejia Kang
- Laboratory of Molecular Neurobiology, Sheng Yushou Center of Cell Biology and Immunology, Department of Genetics and Developmental Biology, School of Life Sciences and Biotechnology, Shanghai Jiao Tong University, Shanghai, China
| | - Anshul Tiwari
- Laboratory of Molecular Neurobiology, Sheng Yushou Center of Cell Biology and Immunology, Department of Genetics and Developmental Biology, School of Life Sciences and Biotechnology, Shanghai Jiao Tong University, Shanghai, China
| | - Patrick Malonza Mwangi
- Sheng Yushou Center of Cell Biology and Immunology, Department of Genetics and Developmental Biology, School of Life Sciences and Biotechnology, Shanghai Jiao Tong University, Shanghai, China
| | - Donglei Sun
- Sheng Yushou Center of Cell Biology and Immunology, Department of Genetics and Developmental Biology, School of Life Sciences and Biotechnology, Shanghai Jiao Tong University, Shanghai, China
| | - Holger Erfle
- Advanced Biological Screening Facility, BioQuant, University of Heidelberg, Heidelberg, Germany
| | - Witold Konopka
- Laboratory of Neuroplasticity and Metabolism, Department of Life Sciences and Biotechnology, Łukasiewicz PORT Polish Center for Technology Development, Wrocław, Poland
| | - Qingxuan Lai
- Laboratory of Molecular Neurobiology, Sheng Yushou Center of Cell Biology and Immunology, Department of Genetics and Developmental Biology, School of Life Sciences and Biotechnology, Shanghai Jiao Tong University, Shanghai, China
| | - Syeda Sadia Najam
- Laboratory of Molecular Neurobiology, Sheng Yushou Center of Cell Biology and Immunology, Department of Genetics and Developmental Biology, School of Life Sciences and Biotechnology, Shanghai Jiao Tong University, Shanghai, China
| | - Ilya A Vinnikov
- Laboratory of Molecular Neurobiology, Sheng Yushou Center of Cell Biology and Immunology, Department of Genetics and Developmental Biology, School of Life Sciences and Biotechnology, Shanghai Jiao Tong University, Shanghai, China.
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20
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Banach E, Szczepankiewicz A, Kaczmarek L, Jaworski T, Urban-Ciećko J. Dysregulation of miRNAs levels in GSK3β overexpressing mice and the role of miR-221-5p in synaptic function. Neuroscience 2022; 490:287-295. [PMID: 35331845 DOI: 10.1016/j.neuroscience.2022.03.024] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2021] [Revised: 03/16/2022] [Accepted: 03/17/2022] [Indexed: 01/01/2023]
Abstract
Glycogen Synthase Kinase-3β (GSK-3β) is a highly expressed kinase in the brain, where it has an important role in synaptic plasticity. Aberrant activity of GSK-3β leads to synaptic dysfunction which results in the development of several neuropsychiatric and neurological diseases. Notably, overexpression of constitutively active form of GSK-3β (GSK-3β[S9A]) in mice recapitulates the cognitive and structural defects characteristic for neurological and psychiatric disorders. However, the mechanisms by which GSK-3β regulates synaptic functions are not clearly known. Here, we investigate the effects of GSK-3β overactivity on neuronal miRNA expression in the mouse hippocampus. We found that GSK-3β overactivity downregulates miRNA network with a potent effect on miR-221-5p (miR-221*). Next, characterization of miR-221* function in primary hippocampal cell culture transfected by miR-221* inhibitor, showed no structural changes in dendritic spine shape and density. Using electrophysiological methods, we found that downregulation of miR-221* increases excitatory synaptic transmission in hippocampal neurons, probably via postsynaptic mechanisms. Thus, our data reveal potential mechanism by which GSK-3β and miRNAs might regulate synaptic function and therefore also synaptic plasticity.
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Affiliation(s)
- Ewa Banach
- Laboratory of Electrophysiology, Nencki Institute of Experimental Biology, PAS, Warsaw, Poland; Laboratory of Animal Models, Nencki Institute of Experimental Biology, PAS, Warsaw, Poland; Laboratory of Neurobiology, BRAINCITY, Nencki Institute of Experimental Biology, Polish Academy of Sciences, 3 Pasteur Street, 02-093 Warsaw, Poland.
| | | | - Leszek Kaczmarek
- Laboratory of Neurobiology, BRAINCITY, Nencki Institute of Experimental Biology, Polish Academy of Sciences, 3 Pasteur Street, 02-093 Warsaw, Poland
| | - Tomasz Jaworski
- Laboratory of Animal Models, Nencki Institute of Experimental Biology, PAS, Warsaw, Poland; Laboratory of Neurobiology, BRAINCITY, Nencki Institute of Experimental Biology, Polish Academy of Sciences, 3 Pasteur Street, 02-093 Warsaw, Poland; Research and Development Centre, Celon Pharma SA, Kazun Nowy, Poland
| | - Joanna Urban-Ciećko
- Laboratory of Electrophysiology, Nencki Institute of Experimental Biology, PAS, Warsaw, Poland; Laboratory of Neurobiology, BRAINCITY, Nencki Institute of Experimental Biology, Polish Academy of Sciences, 3 Pasteur Street, 02-093 Warsaw, Poland
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21
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Daswani R, Gilardi C, Soutschek M, Nanda P, Weiss K, Bicker S, Fiore R, Dieterich C, Germain PL, Winterer J, Schratt G. microRNA-138 controls hippocampal interneuron function and short-term memory in mice. eLife 2022; 11:74056. [PMID: 35290180 PMCID: PMC8963876 DOI: 10.7554/elife.74056] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2021] [Accepted: 03/13/2022] [Indexed: 11/21/2022] Open
Abstract
The proper development and function of neuronal circuits rely on a tightly regulated balance between excitatory and inhibitory (E/I) synaptic transmission, and disrupting this balance can cause neurodevelopmental disorders, for example, schizophrenia. MicroRNA-dependent gene regulation in pyramidal neurons is important for excitatory synaptic function and cognition, but its role in inhibitory interneurons is poorly understood. Here, we identify miR138-5p as a regulator of short-term memory and inhibitory synaptic transmission in the mouse hippocampus. Sponge-mediated miR138-5p inactivation specifically in mouse parvalbumin (PV)-expressing interneurons impairs spatial recognition memory and enhances GABAergic synaptic input onto pyramidal neurons. Cellular and behavioral phenotypes associated with miR138-5p inactivation are paralleled by an upregulation of the schizophrenia (SCZ)-associated Erbb4, which we validated as a direct miR138-5p target gene. Our findings suggest that miR138-5p is a critical regulator of PV interneuron function in mice, with implications for cognition and SCZ. More generally, they provide evidence that microRNAs orchestrate neural circuit development by fine-tuning both excitatory and inhibitory synaptic transmission.
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Affiliation(s)
- Reetu Daswani
- Department of Health Science and Technology, ETH Zurich, Zurich, Switzerland
| | - Carlotta Gilardi
- Department of Health Science and Technology, ETH Zurich, Zurich, Switzerland
| | - Michael Soutschek
- Department of Health Science and Technology, ETH Zurich, Zurich, Switzerland
| | - Pakruti Nanda
- Department of Health Science and Technology, ETH Zurich, Zurich, Switzerland
| | - Kerstin Weiss
- Institute for Physiological Chemistry, Philipp University of Marburg, Marberg, Germany
| | - Silvia Bicker
- Department of Health Science and Technology, ETH Zurich, Zurich, Switzerland
| | - Roberto Fiore
- Department of Health Science and Technology, ETH Zurich, Zurich, Switzerland
| | - Christoph Dieterich
- Department of Internal Medicine III, Heidelberg University, Heidelberg, Germany
| | - Pierre-Luc Germain
- Department of Health Science and Technology, ETH Zurich, Zurich, Switzerland
| | - Jochen Winterer
- Department of Health Science and Technology, ETH Zurich, Zurich, Switzerland
| | - Gerhard Schratt
- Department of Health Science and Technology, ETH Zurich, Zurich, Switzerland
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22
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The neurobiology of non-coding RNAs and Alzheimer's disease pathogenesis: Pathways, mechanisms and translational opportunities. Ageing Res Rev 2021; 71:101425. [PMID: 34384901 DOI: 10.1016/j.arr.2021.101425] [Citation(s) in RCA: 46] [Impact Index Per Article: 15.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2021] [Revised: 08/05/2021] [Accepted: 08/06/2021] [Indexed: 12/13/2022]
Abstract
In the past two decades, advances in sequencing technology and analysis of the human and mouse genome have led to the discovery of many non-protein-coding RNAs (ncRNAs) including: microRNA, small-interfering RNAs, piwi-associated small RNAs, transfer RNA-derived small RNAs, long-non-coding RNAs and circular RNAs. Compared with healthy controls, levels of some ncRNAs are significantly altered in the central nervous system and blood of patients affected by neurodegenerative disorders like Alzheimer's disease (AD). Although the mechanisms are still not fully elucidated, studies have revealed that these highly conserved ncRNAs are important modulators of gene expression, amyloid-β production, tau phosphorylation, inflammation, synaptic plasticity and neuronal survival, all features considered central to AD pathogenesis. Despite considerable difficulties due to their large heterogeneity, and the complexity of their regulatory pathways, research in this rapidly growing field suggests that ncRNAs hold great potential as biomarkers and therapeutic targets against AD. Herein, we summarize the current knowledge regarding the neurobiology of ncRNA in the context of AD pathophysiology.
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23
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Noyes NC, Phan A, Davis RL. Memory suppressor genes: Modulating acquisition, consolidation, and forgetting. Neuron 2021; 109:3211-3227. [PMID: 34450024 PMCID: PMC8542634 DOI: 10.1016/j.neuron.2021.08.001] [Citation(s) in RCA: 25] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2021] [Revised: 07/15/2021] [Accepted: 07/30/2021] [Indexed: 02/06/2023]
Abstract
The brain has a remarkable but underappreciated capacity to limit memory formation and expression. The term "memory suppressor gene" was coined in 1998 as an attempt to explain emerging reports that some genes appeared to limit memory. At that time, only a handful of memory suppressor genes were known, and they were understood to work by limiting cAMP-dependent consolidation. In the intervening decades, almost 100 memory suppressor genes with diverse functions have been discovered that affect not only consolidation but also acquisition and forgetting. Here we highlight the surprising extent to which biological limits are placed on memory formation through reviewing the literature on memory suppressor genes. In this review, we present memory suppressors within the framework of their actions on different memory operations: acquisition, consolidation, and forgetting. This is followed by a discussion of the reasons why there may be a biological need to limit memory formation.
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Affiliation(s)
- Nathaniel C Noyes
- Department of Neuroscience, Scripps Research Institute Florida, Jupiter, FL 33458, USA
| | - Anna Phan
- Department of Biological Sciences, University of Alberta, 11355 Saskatchewan Drive, Edmonton, AB T6G 2E9, Canada
| | - Ronald L Davis
- Department of Neuroscience, Scripps Research Institute Florida, Jupiter, FL 33458, USA.
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24
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Simmons KE, Healey KL, Li Q, Moore SD, Klein RC. Effects of sex and genotype in human APOE-targeted replacement mice on alcohol self-administration measured with the automated IntelliCage system before and after repeated mild traumatic brain injury. Alcohol Clin Exp Res 2021; 45:2231-2245. [PMID: 34585391 DOI: 10.1111/acer.14717] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2021] [Revised: 09/10/2021] [Accepted: 09/12/2021] [Indexed: 11/26/2022]
Abstract
BACKGROUND Few studies have examined the association between APOE genotype and alcohol use. Although some of these studies have reported outcomes associated with a history of drinking, none have examined alcohol-seeking behavior. In addition, no preclinical studies have examined alcohol use as a function of APOE genotype with or without traumatic brain injury. METHODS Male and female human APOE3- and APOE4-targeted replacement (TR) mice were used to assess voluntary alcohol seeking longitudinally using a 2-bottle choice paradigm conducted within the automated IntelliCage system prior to and following repeated mild TBI (rmTBI). Following an acquisition phase in which the concentration of ethanol (EtOH) was increased to 12%, a variety of drinking paradigms that included extended alcohol access (EAA1 and EAA2), alcohol deprivation effect (ADE), limited access drinking in the dark (DID), and progressive ratio (PR) were used to assess alcohol-seeking behavior. Additional behavioral tasks were performed to measure cognitive function and anxiety-like behavior. RESULTS All groups readily consumed increasing concentrations of EtOH (4-12%) during the acquisition phase. During the EAA1 period (12% EtOH), there was a significant genotype effect in both males and females for EtOH preference. Following a 3-week abstinence period, mice received sham or rmTBI resulting in a genotype- and sex-independent main effect of rmTBI on the recovery of righting reflex and a main effect of rmTBI on spontaneous home-cage activity in females only. Reintroduction of 12% EtOH (EAA2) resulted in a significant effect genotype for alcohol preference in males with APOE4 mice displaying increased preference and motivation for alcohol compared with APOE3 mice independent of TBI while in females, there was a significant genotype × TBI interaction under the ADE and DID paradigms. Finally, there was a main effect of rmTBI on increased risk-seeking behavior in both sexes, but no effect on spatial learning or cognitive flexibility. CONCLUSION These results suggest that sex and APOE genotype play a significant role in alcohol consumption and may subsequently influence long-term recovery following traumatic brain insults.
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Affiliation(s)
- Kathryn E Simmons
- Trinity College of Arts and Sciences, Duke University, Durham, North Carolina, USA
| | - Kati L Healey
- Department of Psychiatry, Duke University Medical Center, Durham, North Carolina, USA
| | - Qiang Li
- Department of Psychiatry, Duke University Medical Center, Durham, North Carolina, USA
| | - Scott D Moore
- Department of Psychiatry, Duke University Medical Center, Durham, North Carolina, USA.,Durham Veterans Affairs Medical Center, Durham, North Carolina, USA
| | - Rebecca C Klein
- Department of Psychiatry, Duke University Medical Center, Durham, North Carolina, USA.,Durham Veterans Affairs Medical Center, Durham, North Carolina, USA
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25
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Chen M, Xu E, Zeng C, Zhu W, Zheng J, Chen H. High Dietary Iron Has a Greater Impact on Brain Iron Homeostasis and Cognitive Function in Old Compared with Young C57BL/6J Male Mice. J Nutr 2021; 151:2835-2842. [PMID: 34191031 DOI: 10.1093/jn/nxab189] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2021] [Revised: 02/25/2021] [Accepted: 05/18/2021] [Indexed: 01/01/2023] Open
Abstract
BACKGROUND Brain iron accumulation is a feature of Alzheimer disease (AD) but whether a chronic dietary iron overload contributes to AD induction is unknown. We previously showed that young mice fed a high iron diet did not display cognitive impairment despite the AD pathological markers in hippocampus. OBJECTIVES We aim to compare the impact of high dietary iron on brain pathologic changes and cognitive function in young and old mice. METHODS Male C57BL/6J mice at 1 mo and 13 mo of age were fed with either a control diet (66 mg Fe/kg; Young-Ctrl and Old-Ctrl) or a high iron diet (14 g Fe/kg; Young-High Fe and Old-High Fe) for 7 mo, and outcomes were evaluated at 8 mo and 20 mo of age. Iron concentrations in brain regions were measured by atomic absorption spectrophotometry. Perls's Prussian blue staining and amyloid-β (Aβ) immunostaining were performed. Protein expression in the cerebral cortex and hippocampus was determined by immunoblotting. Superoxide dismutase activity and malondialdehyde concentration were examined. Cognitive functions were tested with the Morris water maze system. Two-factor ANOVA was used to analyze most data. RESULTS Compared with Old-Ctrl mice, Old-High Fe mice showed significantly higher iron concentrations in cerebral cortex (60% higher), cerebellum (60% higher), and hippocampus (90% higher), paralleled by lower superoxide dismutase activity and greater malondialdehyde concentration in cerebral cortex and hippocampus and worse cognitive function. In contrast, these variables did not significantly differ between the 2 young groups. Nevertheless, ferritin, phospho-tau, and Aβ1-42 expression in hippocampus and ferritin and Aβ1-42 expression in cerebral cortex were induced by the high iron diet irrespective of the age of mice (40-200% greater). CONCLUSIONS High dietary iron induced cognitive defects in old mice but not young mice, suggesting that elderly people should avoid consuming abnormally high concentrations of iron.
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Affiliation(s)
- Min Chen
- Clinic for Psychiatry and Psychotherapy, Ludwig-Maximilians-Universität München, München, Germany.,Jiangsu Key Laboratory of Molecular Medicine, Medical School of Nanjing University, Nanjing, China
| | - En Xu
- Jiangsu Key Laboratory of Molecular Medicine, Medical School of Nanjing University, Nanjing, China.,Department of General Surgery, Affiliated Drum Tower Hospital, Medical School of Nanjing University, Nanjing, China
| | - Chong Zeng
- Jiangsu Key Laboratory of Molecular Medicine, Medical School of Nanjing University, Nanjing, China
| | - Wenjie Zhu
- Department of Urology, Nanjing Drum Tower Hospital, The Affiliated Hospital of Nanjing University Medical School, Institute of Urology, Nanjing University, Nanjing, China
| | - Jiashuo Zheng
- Jiangsu Key Laboratory of Molecular Medicine, Medical School of Nanjing University, Nanjing, China.,Helmholtz Zentrum München, Institute of Metabolism and Cell Death, Neuherberg, Germany
| | - Huijun Chen
- Jiangsu Key Laboratory of Molecular Medicine, Medical School of Nanjing University, Nanjing, China
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26
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Bellver-Sanchis A, Pallàs M, Griñán-Ferré C. The Contribution of Epigenetic Inheritance Processes on Age-Related Cognitive Decline and Alzheimer's Disease. EPIGENOMES 2021; 5:15. [PMID: 34968302 PMCID: PMC8594669 DOI: 10.3390/epigenomes5020015] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2021] [Revised: 06/15/2021] [Accepted: 06/17/2021] [Indexed: 12/15/2022] Open
Abstract
During the last years, epigenetic processes have emerged as important factors for many neurodegenerative diseases, such as Alzheimer's disease (AD). These complex diseases seem to have a heritable component; however, genome-wide association studies failed to identify the genetic loci involved in the etiology. So, how can these changes be transmitted from one generation to the next? Answering this question would allow us to understand how the environment can affect human populations for multiple generations and explain the high prevalence of neurodegenerative diseases, such as AD. This review pays particular attention to the relationship among epigenetics, cognition, and neurodegeneration across generations, deepening the understanding of the relevance of heritability in neurodegenerative diseases. We highlight some recent examples of EI induced by experiences, focusing on their contribution of processes in learning and memory to point out new targets for therapeutic interventions. Here, we first describe the prominent role of epigenetic factors in memory processing. Then, we briefly discuss aspects of EI. Additionally, we summarize evidence of how epigenetic marks inherited by experience and/or environmental stimuli contribute to cognitive status offspring since better knowledge of EI can provide clues in the appearance and development of age-related cognitive decline and AD.
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Affiliation(s)
| | | | - Christian Griñán-Ferré
- Pharmacology Section, Department of Pharmacology, Toxicology, and Therapeutic Chemistry, Faculty of Pharmacy and Food Sciences, Institute of Neuroscience, University of Barcelona (NeuroUB), Av Joan XXIII 27-31, 08028 Barcelona, Spain; (A.B.-S.); (M.P.)
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27
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Iman IN, Yusof NAM, Talib UN, Ahmad NAZ, Norazit A, Kumar J, Mehat MZ, Jayabalan N, Muthuraju S, Stefaniuk M, Kaczmarek L, Muzaimi M. The IntelliCage System: A Review of Its Utility as a Novel Behavioral Platform for a Rodent Model of Substance Use Disorder. Front Behav Neurosci 2021; 15:683780. [PMID: 34149373 PMCID: PMC8211779 DOI: 10.3389/fnbeh.2021.683780] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2021] [Accepted: 05/05/2021] [Indexed: 12/12/2022] Open
Abstract
The use of animal models for substance use disorder (SUD) has made an important contribution in the investigation of the behavioral and molecular mechanisms underlying substance abuse and addiction. Here, we review a novel and comprehensive behavioral platform to characterize addiction-like traits in rodents using a fully automated learning system, the IntelliCage. This system simultaneously captures the basic behavioral navigation, reward preference, and aversion, as well as the multi-dimensional complex behaviors and cognitive functions of group-housed rodents. It can reliably capture and track locomotor and cognitive pattern alterations associated with the development of substance addiction. Thus, the IntelliCage learning system offers a potentially efficient, flexible, and sensitive tool for the high-throughput screening of the rodent SUD model.
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Affiliation(s)
- Ismail Nurul Iman
- Department of Neurosciences, School of Medical Sciences, Universiti Sains Malaysia, Kubang Kerian, Malaysia
| | - Nurul Aiman Mohd Yusof
- Department of Anatomy, School of Medical Sciences, Universiti Sains Malaysia, Kubang Kerian, Malaysia
| | - Ummi Nasrah Talib
- Department of Neurosciences, School of Medical Sciences, Universiti Sains Malaysia, Kubang Kerian, Malaysia
| | - Nur Aimi Zawami Ahmad
- Department of Neurosciences, School of Medical Sciences, Universiti Sains Malaysia, Kubang Kerian, Malaysia
| | - Anwar Norazit
- Department of Biomedical Sciences, Faculty of Medicine, University of Malaya, Kuala Lumpur, Malaysia
| | - Jaya Kumar
- Department of Physiology, Faculty of Medicine, Universiti Kebangsaan Malaysia, Kuala Lumpur, Malaysia
| | - Muhammad Zulfadli Mehat
- Department of Human Anatomy, Faculty of Medicine and Health Sciences, Universiti Putra Malaysia, Serdang, Malaysia
| | - Nanthini Jayabalan
- Translational Neuroscience Lab, UQ Centre for Clinical Research, The University of Queensland, Brisbane, QLD, Australia
| | - Sangu Muthuraju
- Department of Pharmacological and Pharmaceutical Sciences, College of Pharmacy, University of Houston, Houston, TX, United States
| | - Marzena Stefaniuk
- BRAINCITY, Nencki Institute of Experimental Biology, Polish Academy of Sciences, Warsaw, Poland
| | - Leszek Kaczmarek
- BRAINCITY, Nencki Institute of Experimental Biology, Polish Academy of Sciences, Warsaw, Poland
| | - Mustapha Muzaimi
- Department of Neurosciences, School of Medical Sciences, Universiti Sains Malaysia, Kubang Kerian, Malaysia
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28
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miR- 218- 2 regulates cognitive functions in the hippocampus through complement component 3-dependent modulation of synaptic vesicle release. Proc Natl Acad Sci U S A 2021; 118:2021770118. [PMID: 33782126 DOI: 10.1073/pnas.2021770118] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
microRNA-218 (miR-218) has been linked to several cognition related neurodegenerative and neuropsychiatric disorders. However, whether miR-218 plays a direct role in cognitive functions remains unknown. Here, using the miR-218 knockout (KO) mouse model and the sponge/overexpression approaches, we showed that miR-218-2 but not miR-218-1 could bidirectionally regulate the contextual and spatial memory in the mice. Furthermore, miR-218-2 deficiency induced deficits in the morphology and presynaptic neurotransmitter release in the hippocampus to impair the long term potentiation. Combining the RNA sequencing analysis and luciferase reporter assay, we identified complement component 3 (C3) as a main target gene of miR-218 in the hippocampus to regulate the presynaptic functions. Finally, we showed that restoring the C3 activity in the miR-218-2 KO mice could rescue the synaptic and learning deficits. Therefore, miR-218-2 played an important role in the cognitive functions of mice through C3, which can be a mechanism for the defective cognition of miR-218 related neuronal disorders.
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29
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Grinkevich LN. The role of microRNAs in learning and long-term memory. Vavilovskii Zhurnal Genet Selektsii 2020; 24:885-896. [PMID: 35088002 PMCID: PMC8763713 DOI: 10.18699/vj20.687] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2020] [Revised: 10/11/2020] [Accepted: 10/15/2020] [Indexed: 01/10/2023] Open
Abstract
The mechanisms of long-term memory formation and ways to improve it (in the case of its impairment) remain an extremely difficult problem yet to be solved. Over the recent years, much attention has been
paid to microRNAs in this regard. MicroRNAs are unique endogenous non-coding RNAs about 22 nucleotides in
length; each can regulate translation of hundreds of messenger RNA targets, thereby controlling entire gene networks. MicroRNAs are widely represented in the central nervous system. A large number of studies are currently
being conducted to investigate the role of microRNAs in the brain functioning. A number of microRNAs have
been shown to be involved in the process of synaptic plasticity, as well as in the long-term memory formation.
Disruption of microRNA biogenesis leads to significant cognitive dysfunctions. Moreover, impaired microRNA
biogenesis is one of the causes of the pathogenesis of mental disorders, neurodegenerative illnesses and senile
dementia, which are often accompanied by deterioration in the learning ability and by memory impairment.
Optimistic predictions are made that microRNAs can be used as targets for therapeutic treatment and for diagnosing the above pathologies. The importance of applications related to microRNAs significantly raises interest
in studying their functions in the brain. Thus, this review is focused on the role of microRNAs in cognitive processes. It describes microRNA biogenesis and the role of miRNAs in the regulation of gene expression, as well
as the latest achievements in studying the functional role of microRNAs in learning and in long-term memory
formation, depending on the activation or inhibition of their expression. The review presents summarized data
on the effect of impaired microRNA biogenesis on long-term memory formation, including those associated with
sleep deprivation. In addition, analysis is provided of the current literature related to the prospects of improving
cognitive processes by influencing microRNA biogenesis via the use of CRISPR/Cas9 technologies and active
mental and physical exercises.
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Affiliation(s)
- L. N. Grinkevich
- Pavlov Institute of Physiology of the Russian Academy of Sciences
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30
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Gerasymchuk D, Hubiernatorova A, Domanskyi A. MicroRNAs Regulating Cytoskeleton Dynamics, Endocytosis, and Cell Motility-A Link Between Neurodegeneration and Cancer? Front Neurol 2020; 11:549006. [PMID: 33240194 PMCID: PMC7680873 DOI: 10.3389/fneur.2020.549006] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2020] [Accepted: 10/06/2020] [Indexed: 12/13/2022] Open
Abstract
The cytoskeleton is one of the most mobile and complex cell structures. It is involved in cellular transport, cell division, cell shape formation and adaptation in response to extra- and intracellular stimuli, endo- and exocytosis, migration, and invasion. These processes are crucial for normal cellular physiology and are affected in several pathological processes, including neurodegenerative diseases, and cancer. Some proteins, participating in clathrin-mediated endocytosis (CME), play an important role in actin cytoskeleton reorganization, and formation of invadopodia in cancer cells and are also deregulated in neurodegenerative disorders. However, there is still limited information about the factors contributing to the regulation of their expression. MicroRNAs are potent negative regulators of gene expression mediating crosstalk between different cellular pathways in cellular homeostasis and stress responses. These molecules regulate numerous genes involved in neuronal differentiation, plasticity, and degeneration. Growing evidence suggests the role of microRNAs in the regulation of endocytosis, cell motility, and invasiveness. By modulating the levels of such microRNAs, it may be possible to interfere with CME or other processes to normalize their function. In malignancy, the role of microRNAs is undoubtful, and therefore changing their levels can attenuate the carcinogenic process. Here we review the current advances in our understanding of microRNAs regulating actin cytoskeleton dynamics, CME and cell motility with a special focus on neurodegenerative diseases, and cancer. We investigate whether current literature provides an evidence that microRNA-mediated regulation of essential cellular processes, such as CME and cell motility, is conserved in neurons, and cancer cells. We argue that more research effort should be addressed to study the neuron-specific functions on microRNAs. Disease-associated microRNAs affecting essential cellular processes deserve special attention both from the view of fundamental science and as future neurorestorative or anti-cancer therapies.
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Affiliation(s)
- Dmytro Gerasymchuk
- Institute of Biotechnology, Helsinki Institute of Life Science (HiLIFE), University of Helsinki, Helsinki, Finland
- Institute of Molecular Biology and Genetics, National Academy of Sciences of Ukraine, Kyiv, Ukraine
| | | | - Andrii Domanskyi
- Institute of Biotechnology, Helsinki Institute of Life Science (HiLIFE), University of Helsinki, Helsinki, Finland
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31
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The Functional Role of microRNAs in the Pathogenesis of Tauopathy. Cells 2020; 9:cells9102262. [PMID: 33050194 PMCID: PMC7600742 DOI: 10.3390/cells9102262] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2020] [Revised: 09/30/2020] [Accepted: 10/02/2020] [Indexed: 12/11/2022] Open
Abstract
Tauopathies are neurodegenerative disorders which include Alzheimer's disease, Pick's disease, corticobasal degeneration, and progressive supranuclear palsy among others. Pathologically, they are characterized by the accumulation of highly phosphorylated and aggregated tau protein in different brain regions. Currently, the mechanisms responsible for their pathogenesis are not known, and for this reason, there is no cure. MicroRNAs (miRNAs) are abundantly present in the central nervous system where they act as master regulators of pathways considered important for tau post-translational modifications, metabolism, and clearance. Although in recent years, several miRNAs have been reported to be altered in tauopathy, we still do not know whether these changes contribute to the onset and progression of the disorder, or are secondary events following the development of tau neuropathology. Additionally, since miRNAs are relatively stable in biological fluids and their measurement is easy and non-invasive, these small molecules hold the potential to function as biomarkers for tauopathy. Herein, we showcase recent findings on the biological link between miRNAs and the pathogenesis of tauopathy, and present emerging evidence supporting their role as biomarkers and targets for novel therapies against them.
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Oliveira NCM, Lins ÉM, Massirer KB, Bengtson MH. Translational Control during Mammalian Neocortex Development and Postembryonic Neuronal Function. Semin Cell Dev Biol 2020; 114:36-46. [PMID: 33020045 DOI: 10.1016/j.semcdb.2020.09.006] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2020] [Revised: 09/09/2020] [Accepted: 09/09/2020] [Indexed: 12/21/2022]
Abstract
The control of mRNA translation has key roles in the regulation of gene expression and biological processes such as mammalian cellular differentiation and identity. Methodological advances in the last decade have resulted in considerable progress towards understanding how translational control contributes to the regulation of diverse biological phenomena. In this review, we discuss recent findings in the involvement of translational control in the mammalian neocortex development and neuronal biology. We focus on regulatory mechanisms that modulate translational efficiency during neural stem cells self-renewal and differentiation, as well as in neuronal-related processes such as synapse, plasticity, and memory.
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Affiliation(s)
- Natássia Cristina Martins Oliveira
- Department of Biochemistry and Tissue Biology, Institute of Biology, University of Campinas - UNICAMP, 13083-862, Campinas, SP, Brazil; Center for Molecular Biology and Genetic Engineering - CBMEG, University of Campinas - UNICAMP, 13083-875, Campinas, SP, Brazil; Center of Medicinal Chemistry - CQMED, Structural Genomics Consortium - SGC, University of Campinas - UNICAMP, 13083-886, Campinas, SP, Brazil
| | - Érico Moreto Lins
- Department of Biochemistry and Tissue Biology, Institute of Biology, University of Campinas - UNICAMP, 13083-862, Campinas, SP, Brazil; PhD Program in Genetics and Molecular Biology (PGBM), UNICAMP, Campinas, SP 13083-862, Brazil
| | - Katlin Brauer Massirer
- Center for Molecular Biology and Genetic Engineering - CBMEG, University of Campinas - UNICAMP, 13083-875, Campinas, SP, Brazil; Center of Medicinal Chemistry - CQMED, Structural Genomics Consortium - SGC, University of Campinas - UNICAMP, 13083-886, Campinas, SP, Brazil
| | - Mário Henrique Bengtson
- Department of Biochemistry and Tissue Biology, Institute of Biology, University of Campinas - UNICAMP, 13083-862, Campinas, SP, Brazil; Center of Medicinal Chemistry - CQMED, Structural Genomics Consortium - SGC, University of Campinas - UNICAMP, 13083-886, Campinas, SP, Brazil.
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Arnoriaga-Rodríguez M, Mayneris-Perxachs J, Burokas A, Contreras-Rodríguez O, Blasco G, Coll C, Biarnés C, Miranda-Olivos R, Latorre J, Moreno-Navarrete JM, Castells-Nobau A, Sabater M, Palomo-Buitrago ME, Puig J, Pedraza S, Gich J, Pérez-Brocal V, Ricart W, Moya A, Fernández-Real X, Ramió-Torrentà L, Pamplona R, Sol J, Jové M, Portero-Otin M, Maldonado R, Fernández-Real JM. Obesity Impairs Short-Term and Working Memory through Gut Microbial Metabolism of Aromatic Amino Acids. Cell Metab 2020; 32:548-560.e7. [PMID: 33027674 DOI: 10.1016/j.cmet.2020.09.002] [Citation(s) in RCA: 69] [Impact Index Per Article: 17.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/17/2020] [Revised: 05/12/2020] [Accepted: 08/31/2020] [Indexed: 02/07/2023]
Abstract
The gut microbiome has been linked to fear extinction learning in animal models. Here, we aimed to explore the gut microbiome and memory domains according to obesity status. A specific microbiome profile associated with short-term memory, working memory, and the volume of the hippocampus and frontal regions of the brain differentially in human subjects with and without obesity. Plasma and fecal levels of aromatic amino acids, their catabolites, and vegetable-derived compounds were longitudinally associated with short-term and working memory. Functionally, microbiota transplantation from human subjects with obesity led to decreased memory scores in mice, aligning this trait from humans with that of recipient mice. RNA sequencing of the medial prefrontal cortex of mice revealed that short-term memory associated with aromatic amino acid pathways, inflammatory genes, and clusters of bacterial species. These results highlight the potential therapeutic value of targeting the gut microbiota for memory impairment, specifically in subjects with obesity.
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Affiliation(s)
- María Arnoriaga-Rodríguez
- Department of Diabetes, Endocrinology and Nutrition, Dr. Josep Trueta University Hospital, Girona, Spain; Nutrition, Eumetabolism and Health Group, Girona Biomedical Research Institute (IdibGi), Girona, Spain; Biomedical Research Networking Center for Physiopathology of Obesity and Nutrition (CIBEROBN), Madrid, Spain; Department of Medical Sciences, Faculty of Medicine, Girona University, Girona, Spain
| | - Jordi Mayneris-Perxachs
- Department of Diabetes, Endocrinology and Nutrition, Dr. Josep Trueta University Hospital, Girona, Spain; Nutrition, Eumetabolism and Health Group, Girona Biomedical Research Institute (IdibGi), Girona, Spain; Biomedical Research Networking Center for Physiopathology of Obesity and Nutrition (CIBEROBN), Madrid, Spain
| | - Aurelijus Burokas
- Laboratory of Neuropharmacology, Department of Experimental and Health Sciences, Universitat Pompeu Fabra, Barcelona, Spain
| | - Oren Contreras-Rodríguez
- Nutrition, Eumetabolism and Health Group, Girona Biomedical Research Institute (IdibGi), Girona, Spain; Psychiatry Department, Bellvitge University Hospital, Bellvitge Biomedical Research Institute (IDIBELL) and CIBERSAM, Barcelona, Spain
| | - Gerard Blasco
- Institute of Diagnostic Imaging (IDI)-Research Unit (IDIR), Parc Sanitari Pere Virgili, Barcelona, Spain; Medical Imaging, Girona Biomedical Research Institute (IdibGi), Girona, Spain
| | - Clàudia Coll
- Neuroimmunology and Multiple Sclerosis Unit, Department of Neurology, Dr. Josep Trueta University Hospital, Girona, Spain
| | - Carles Biarnés
- Institute of Diagnostic Imaging (IDI)-Research Unit (IDIR), Parc Sanitari Pere Virgili, Barcelona, Spain
| | - Romina Miranda-Olivos
- Nutrition, Eumetabolism and Health Group, Girona Biomedical Research Institute (IdibGi), Girona, Spain; Psychiatry Department, Bellvitge University Hospital, Bellvitge Biomedical Research Institute (IDIBELL) and CIBERSAM, Barcelona, Spain
| | - Jèssica Latorre
- Department of Diabetes, Endocrinology and Nutrition, Dr. Josep Trueta University Hospital, Girona, Spain; Nutrition, Eumetabolism and Health Group, Girona Biomedical Research Institute (IdibGi), Girona, Spain; Biomedical Research Networking Center for Physiopathology of Obesity and Nutrition (CIBEROBN), Madrid, Spain
| | - José-Maria Moreno-Navarrete
- Department of Diabetes, Endocrinology and Nutrition, Dr. Josep Trueta University Hospital, Girona, Spain; Nutrition, Eumetabolism and Health Group, Girona Biomedical Research Institute (IdibGi), Girona, Spain; Biomedical Research Networking Center for Physiopathology of Obesity and Nutrition (CIBEROBN), Madrid, Spain; Department of Medical Sciences, Faculty of Medicine, Girona University, Girona, Spain
| | - Anna Castells-Nobau
- Department of Diabetes, Endocrinology and Nutrition, Dr. Josep Trueta University Hospital, Girona, Spain; Nutrition, Eumetabolism and Health Group, Girona Biomedical Research Institute (IdibGi), Girona, Spain; Biomedical Research Networking Center for Physiopathology of Obesity and Nutrition (CIBEROBN), Madrid, Spain
| | - Mònica Sabater
- Department of Diabetes, Endocrinology and Nutrition, Dr. Josep Trueta University Hospital, Girona, Spain; Nutrition, Eumetabolism and Health Group, Girona Biomedical Research Institute (IdibGi), Girona, Spain; Biomedical Research Networking Center for Physiopathology of Obesity and Nutrition (CIBEROBN), Madrid, Spain
| | - María Encarnación Palomo-Buitrago
- Department of Diabetes, Endocrinology and Nutrition, Dr. Josep Trueta University Hospital, Girona, Spain; Nutrition, Eumetabolism and Health Group, Girona Biomedical Research Institute (IdibGi), Girona, Spain
| | - Josep Puig
- Department of Medical Sciences, Faculty of Medicine, Girona University, Girona, Spain; Institute of Diagnostic Imaging (IDI)-Research Unit (IDIR), Parc Sanitari Pere Virgili, Barcelona, Spain; Medical Imaging, Girona Biomedical Research Institute (IdibGi), Girona, Spain
| | - Salvador Pedraza
- Department of Medical Sciences, Faculty of Medicine, Girona University, Girona, Spain; Medical Imaging, Girona Biomedical Research Institute (IdibGi), Girona, Spain; Department of Radiology, Dr. Josep Trueta University Hospital, Girona, Spain
| | - Jordi Gich
- Department of Medical Sciences, Faculty of Medicine, Girona University, Girona, Spain; Girona Neurodegeneration and Neuroinflammation Group, Girona Biomedical Research Institute (IdibGi), Girona, Spain
| | - Vicente Pérez-Brocal
- Department of Genomics and Health, Foundation for the Promotion of Health and Biomedical Research of Valencia Region (FISABIO-Public Health), Valencia, Spain; Biomedical Research Networking Center for Epidemiology and Public Health (CIBERESP), Madrid, Spain
| | - Wifredo Ricart
- Department of Diabetes, Endocrinology and Nutrition, Dr. Josep Trueta University Hospital, Girona, Spain; Nutrition, Eumetabolism and Health Group, Girona Biomedical Research Institute (IdibGi), Girona, Spain; Biomedical Research Networking Center for Physiopathology of Obesity and Nutrition (CIBEROBN), Madrid, Spain; Department of Medical Sciences, Faculty of Medicine, Girona University, Girona, Spain
| | - Andrés Moya
- Department of Genomics and Health, Foundation for the Promotion of Health and Biomedical Research of Valencia Region (FISABIO-Public Health), Valencia, Spain; Biomedical Research Networking Center for Epidemiology and Public Health (CIBERESP), Madrid, Spain; Institute for Integrative Systems Biology (I2SysBio), University of Valencia and Spanish National Research Council (CSIC), Valencia, Spain
| | - Xavier Fernández-Real
- Institute of Mathematics, École Polytechnique Fédérale de Lausanne (EPFL), Lausanne, Switzerland
| | - Lluís Ramió-Torrentà
- Department of Medical Sciences, Faculty of Medicine, Girona University, Girona, Spain; Neuroimmunology and Multiple Sclerosis Unit, Department of Neurology, Dr. Josep Trueta University Hospital, Girona, Spain; Girona Neurodegeneration and Neuroinflammation Group, Girona Biomedical Research Institute (IdibGi), Girona, Spain
| | - Reinald Pamplona
- Metabolic Pathophysiology Research Group, Lleida Biomedical Research Institute (IRBLleida)-Universitat de Lleida, Lleida, Spain
| | - Joaquim Sol
- Metabolic Pathophysiology Research Group, Lleida Biomedical Research Institute (IRBLleida)-Universitat de Lleida, Lleida, Spain
| | - Mariona Jové
- Metabolic Pathophysiology Research Group, Lleida Biomedical Research Institute (IRBLleida)-Universitat de Lleida, Lleida, Spain
| | - Manuel Portero-Otin
- Metabolic Pathophysiology Research Group, Lleida Biomedical Research Institute (IRBLleida)-Universitat de Lleida, Lleida, Spain
| | - Rafael Maldonado
- Laboratory of Neuropharmacology, Department of Experimental and Health Sciences, Universitat Pompeu Fabra, Barcelona, Spain; Hospital del Mar Medical Research Institute (IMIM), Barcelona, Spain.
| | - José Manuel Fernández-Real
- Department of Diabetes, Endocrinology and Nutrition, Dr. Josep Trueta University Hospital, Girona, Spain; Nutrition, Eumetabolism and Health Group, Girona Biomedical Research Institute (IdibGi), Girona, Spain; Biomedical Research Networking Center for Physiopathology of Obesity and Nutrition (CIBEROBN), Madrid, Spain; Department of Medical Sciences, Faculty of Medicine, Girona University, Girona, Spain.
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Chen F, Chen H, Jia Y, Lu H, Tan Q, Zhou X. miR-149-5p inhibition reduces Alzheimer's disease β-amyloid generation in 293/APPsw cells by upregulating H4K16ac via KAT8. Exp Ther Med 2020; 20:88. [PMID: 32973937 PMCID: PMC7507054 DOI: 10.3892/etm.2020.9216] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2019] [Accepted: 07/07/2020] [Indexed: 01/20/2023] Open
Abstract
Alzheimer's disease (AD), the leading cause of age-related dementia, is characterized by abnormal β-amyloid accumulation. During learning, memory formation and consolidation, increased levels of histone H3 and H4 acetylation are observed. The present study reported significantly decreased level of H4K16ac in the plasma of patients with AD compared with healthy subjects via western blotting and reverse transcription-quantitative (RT-q)PCR. Lysine acetyltransferase 8 (KAT8) expression, the major lysine acetyltransferase responsible for the acetylation of H4K16, was significantly decreased in patients with AD compared with healthy subjects as determined via western blotting and RT-qPCR. The results indicated that aberrant expression patterns of H4K16ac and KAT8 might be associated with AD progression. Moreover, western blot analysis demonstrated that KAT8-overexpression cells displayed increased levels of H4K16ac, accompanied by higher levels of neuroprotective soluble amyloid precursor protein (sAPP)α and β-secretase (BACE)2, and decreased levels of sAPPβ and BACE1 compared with negative control and vector cells. In neurodegenerative disorders, microRNAs (miRNAs/miRs) are deregulated; however, the effect of miRNA dysregulation on histone acetylation is not completely understood. To the best of our knowledge, the present study identified a novel inhibitory interaction between miR-149-5p and KAT8 3'-UTR that contributed to the pathological alterations in an AD cell model for the first time, using bioinformatics and a dual-luciferase reporter assay. The western blotting results indicated that, compared with the inhibitor control group, miR-149-5p inhibitor markedly increased H4K16ac levels, which were significantly suppressed by co-transfection with KAT8 short hairpin (sh)RNA. KAT8 shRNA and miR-149-5p inhibitor co-transfection abolished the beneficial effects of miR-149-5p inhibitor. The results indicated that miR-149-5p regulated KAT8 and H4K16ac expression in an AD cell model, which may be associated with the pathological process of AD; therefore, miRNA may serve as a potential drug target for AD.
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Affiliation(s)
- Fuyan Chen
- Department of Acupuncture and Moxibustion, First Teaching Hospital of Tianjin University of Traditional Chinese Medicine, Tianjin 300193, P.R. China.,National Clinical Research Center for Acupuncture and Moxibustion, Tianjin 300193, P.R. China
| | - Huifeng Chen
- Department of Internal Neurology, Tianjin Medical University General Hospital Airport Hospital, Tianjin 300308, P.R. China
| | - Yujie Jia
- Department of Acupuncture and Moxibustion, First Teaching Hospital of Tianjin University of Traditional Chinese Medicine, Tianjin 300193, P.R. China
| | - Hai Lu
- Graduate School, Tianjin University of Traditional Chinese Medicine, Tianjin 300193, P.R. China
| | - Qiaorui Tan
- Graduate School, Tianjin University of Traditional Chinese Medicine, Tianjin 300193, P.R. China
| | - Xin Zhou
- Department of Orthopedics, First Teaching Hospital of Tianjin University of Traditional Chinese Medicine, Tianjin 300193, P.R. China
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35
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Dahan L, Rampon C, Florian C. Age-related memory decline, dysfunction of the hippocampus and therapeutic opportunities. Prog Neuropsychopharmacol Biol Psychiatry 2020; 102:109943. [PMID: 32298784 DOI: 10.1016/j.pnpbp.2020.109943] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/16/2019] [Revised: 04/01/2020] [Accepted: 04/01/2020] [Indexed: 12/13/2022]
Abstract
While the aging of the population is a sign of progress for societies, it also carries its load of negative aspects. Among them, cognitive decline and in particular memory loss is a common feature of non-pathological aging. Autobiographical memories, which rely on the hippocampus, are a primary target of age-related cognitive decline. Here, focusing on the neurobiological mechanisms of memory formation and storage, we describe how hippocampal functions are altered across time in non-pathological mammalian brains. Several hallmarks of aging have been well described over the last decades; among them, we consider altered synaptic communication and plasticity, reduction of adult neurogenesis and epigenetic alterations. Building on the neurobiological processes of cognitive aging that have been identified to date, we review some of the strategies based on lifestyle manupulation allowing to address age-related cognitive deficits.
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Affiliation(s)
- Lionel Dahan
- Centre de Recherches sur la Cognition Animale (CRCA), Centre de Biologie Intégrative (CBI), Université de Toulouse; CNRS, UPS, Toulouse Cedex 9, France
| | - Claire Rampon
- Centre de Recherches sur la Cognition Animale (CRCA), Centre de Biologie Intégrative (CBI), Université de Toulouse; CNRS, UPS, Toulouse Cedex 9, France
| | - Cédrick Florian
- Centre de Recherches sur la Cognition Animale (CRCA), Centre de Biologie Intégrative (CBI), Université de Toulouse; CNRS, UPS, Toulouse Cedex 9, France.
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36
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MicroRNAs are indispensable for the proliferation and differentiation of adult neural progenitor cells in mice. Biochem Biophys Res Commun 2020; 530:209-214. [PMID: 32828287 DOI: 10.1016/j.bbrc.2020.06.143] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2020] [Accepted: 06/26/2020] [Indexed: 01/18/2023]
Abstract
More than two decades after the discovery of adult neurogenesis in humans, researchers still struggle to elucidate the underlying transcriptional and post-transcriptional mechanisms. RNA interference is a crucially important process in the central nervous system, and its role in adult neurogenesis is poorly understood. In this work, we address the role of Dicer-dependent microRNA biogenesis in neuronal differentiation of adult neural stem cells within the subventricular zone of the mouse brain. Loss of the Dicer1 gene in the tailless (Tlx)-positive cells did not cause the decline in their numbers, but severely affected differentiation. Thus, our findings identify yet another phenomenon associated with microRNA pathway deregulation in adult neural stem cells which might be of relevance both for neuroscience and clinical practice.
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37
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Ganguly K, Trigun SK. Mapping Connectome in Mammalian Brain: A Novel Approach by Bioengineering Neuro-Glia specific Vectors. J Theor Biol 2020; 496:110244. [PMID: 32171712 DOI: 10.1016/j.jtbi.2020.110244] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2019] [Revised: 03/08/2020] [Accepted: 03/10/2020] [Indexed: 10/24/2022]
Abstract
The connectome is the comprehensive map of the brain represented by wiring diagram of the full set of neuro-glia and synapses within entire brain of an organism. Some recent scientific efforts have successfully been made to visualize such map at neuro-glial networking level, however, capturing it as one unit of the entire brain have never been elucidated. Moreover, in order to derive structure-function relationship of different brain regions in response to a defined stimulus, there is a need to elucidate the connectome at single neuro-glial ensemble level after brain is challenged with the known memory function. This needs developing molecular approaches to tag neuro-glial activities in response to a conditioned brain function. Such approaches of using specific molecular tags have been tried to visualize independently neuron and glial specific events in response to a memory function, however, they could not tag the connectome together at single neuro-glia ensemble level. Therefore, there is a need to develop new methods for mapping entire connectome up to a single neuro-glial precision and resolution, with a purpose of tagging specific brain region accountable to execute a special memory formation process. The present hypothetical paper aims to propose a novel molecular method to generate the structural connectome at neuro-glial level in mice brain. Herein, we propose to tag the entire connectome at neuro-glia precision by generating a transgenic mice via transposing and recombining engineered novel "Neuro-Glia specific Vectors" (NGVs: specific to excitatory neurons, inhibitory neurons and glial cells) vis a vis "Transcriptional/ Translational Messenger (TMs: specific to metalloproteinases, MMP-9) coupled with different color protein tags, followed by the Clarity. Herein, the NGVs will be translated via Neuro-glia specific promoters, while TMs will be translated via endogenous MMP-9 promoter in all neuro-glial cells. The viability of all constructs will be verified in cortical/ hippocampal culture by inducing them to undergo chemically induced long term potentionation (cLTP) following visualization of different colored pattern. This will be further confirmed by Immunostaning, Western Blot and RT-PCR analysis. Additionally, in this approach, one can decipher the dynamics of molecular and cellular events associated with MMP-9 seretome by monitoring the trafficking of tagged endogenous MMP-9 protein after neuronal stimulation by cLTP in vitro. However, for visualizing complete connectome, the adult transgenic mice will be challenged with fear consolidation (Fear context and contextual cue) tests followed by Clarity coupled Light Sheet Microscopy to analyze neuro-glia ensemble following whole brain imaging.
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Affiliation(s)
- Krishnendu Ganguly
- Biochemistry and Molecular Biology Unit, Department of Zoology, Institute of Science, Banaras Hindu University, Varanasi, 221005 Uttar Pradesh, India
| | - Surendra Kumar Trigun
- Biochemistry and Molecular Biology Unit, Department of Zoology, Institute of Science, Banaras Hindu University, Varanasi, 221005 Uttar Pradesh, India.
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38
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MicroRNAs as regulators of brain function and targets for treatment of epilepsy. Nat Rev Neurol 2020; 16:506-519. [DOI: 10.1038/s41582-020-0369-8] [Citation(s) in RCA: 46] [Impact Index Per Article: 11.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 05/06/2020] [Indexed: 02/07/2023]
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39
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Roy B, Yoshino Y, Allen L, Prall K, Schell G, Dwivedi Y. Exploiting Circulating MicroRNAs as Biomarkers in Psychiatric Disorders. Mol Diagn Ther 2020; 24:279-298. [PMID: 32304043 PMCID: PMC7269874 DOI: 10.1007/s40291-020-00464-9] [Citation(s) in RCA: 27] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
Non-invasive peripheral biomarkers play a significant role in both disease diagnosis and progression. In the past few years, microRNA (miRNA) expression changes in circulating peripheral tissues have been found to be correlative with changes in neuronal tissues from patients with neuropsychiatric disorders. This is a notable quality of a biomolecule to be considered as a biomarker for both prognosis and diagnosis of disease. miRNAs, members of the small non-coding RNA family, have recently gained significant attention due to their ability to epigenetically influence almost every aspect of brain functioning. Empirical evidence suggests that miRNA-associated changes in the brain are often translated into behavioral changes. Current clinical understanding further implicates their role in the management of major psychiatric conditions, including major depressive disorder (MDD), bipolar disorder (BD), and schizophrenia (SZ). This review aims to critically evaluate the potential advantages and disadvantages of miRNAs as diagnostic/prognostic biomarkers in psychiatric disorders as well as in treatment response.
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Affiliation(s)
- Bhaskar Roy
- Translational Research, UAB Mood Disorders Program, UAB Depression and Suicide Center, Department of Psychiatry and Behavioral Neurobiology, University of Alabama at Birmingham, SC711 Sparks Center, 1720 7th Avenue South, Birmingham, AL, 35294, USA
| | - Yuta Yoshino
- Translational Research, UAB Mood Disorders Program, UAB Depression and Suicide Center, Department of Psychiatry and Behavioral Neurobiology, University of Alabama at Birmingham, SC711 Sparks Center, 1720 7th Avenue South, Birmingham, AL, 35294, USA
| | - Lauren Allen
- Translational Research, UAB Mood Disorders Program, UAB Depression and Suicide Center, Department of Psychiatry and Behavioral Neurobiology, University of Alabama at Birmingham, SC711 Sparks Center, 1720 7th Avenue South, Birmingham, AL, 35294, USA
| | - Kevin Prall
- Translational Research, UAB Mood Disorders Program, UAB Depression and Suicide Center, Department of Psychiatry and Behavioral Neurobiology, University of Alabama at Birmingham, SC711 Sparks Center, 1720 7th Avenue South, Birmingham, AL, 35294, USA
| | - Grant Schell
- Translational Research, UAB Mood Disorders Program, UAB Depression and Suicide Center, Department of Psychiatry and Behavioral Neurobiology, University of Alabama at Birmingham, SC711 Sparks Center, 1720 7th Avenue South, Birmingham, AL, 35294, USA
| | - Yogesh Dwivedi
- Translational Research, UAB Mood Disorders Program, UAB Depression and Suicide Center, Department of Psychiatry and Behavioral Neurobiology, University of Alabama at Birmingham, SC711 Sparks Center, 1720 7th Avenue South, Birmingham, AL, 35294, USA.
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40
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Sillivan SE, Jamieson S, de Nijs L, Jones M, Snijders C, Klengel T, Joseph NF, Krauskopf J, Kleinjans J, Vinkers CH, Boks MP, Geuze E, Vermetten E, Berretta S, Ressler KJ, Rutten BP, Rumbaugh G, Miller CA. MicroRNA regulation of persistent stress-enhanced memory. Mol Psychiatry 2020; 25:965-976. [PMID: 31142820 PMCID: PMC6883139 DOI: 10.1038/s41380-019-0432-2] [Citation(s) in RCA: 24] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/26/2018] [Revised: 03/04/2019] [Accepted: 04/11/2019] [Indexed: 12/28/2022]
Abstract
Disruption of persistent, stress-associated memories is relevant for treating posttraumatic stress disorder (PTSD) and related syndromes, which develop in a subset of individuals following a traumatic event. We previously developed a stress-enhanced fear learning (SEFL) paradigm in inbred mice that produces PTSD-like characteristics in a subset of mice, including persistently enhanced memory and heightened cFos in the basolateral amygdala complex (BLC) with retrieval of the remote (30-day-old) stress memory. Here, the contribution of BLC microRNAs (miRNAs) to stress-enhanced memory was investigated because of the molecular complexity they achieve through their ability to regulate multiple targets simultaneously. We performed small-RNA sequencing (smRNA-Seq) and quantitative proteomics on BLC tissue collected from mice 1 month after SEFL and identified persistently changed microRNAs, including mir-135b-5p, and proteins associated with PTSD-like heightened fear expression. Viral-mediated overexpression of mir-135b-5p in the BLC of stress-resilient animals enhanced remote fear memory expression and promoted spontaneous renewal 14 days after extinction. Conversely, inhibition of BLC mir-135b-5p in stress-susceptible animals had the opposite effect, promoting a resilient-like phenotype. mir-135b-5p is highly conserved across mammals and was detected in post mortem human amygdala, as well as human serum samples. The mir-135b passenger strand, mir-135b-3p, was significantly elevated in serum from PTSD military veterans, relative to combat-exposed control subjects. Thus, miR-135b-5p may be an important therapeutic target for dampening persistent, stress-enhanced memory and its passenger strand a potential biomarker for responsivity to a mir-135-based therapeutic.
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Affiliation(s)
- Stephanie E. Sillivan
- Department of Molecular Medicine, The Scripps Research Institute, Jupiter, FL USA,Department of Neuroscience, The Scripps Research Institute, Jupiter, FL USA
| | - Sarah Jamieson
- Department of Molecular Medicine, The Scripps Research Institute, Jupiter, FL USA,Department of Neuroscience, The Scripps Research Institute, Jupiter, FL USA
| | - Laurence de Nijs
- School for Mental Health and Neuroscience, Department of Psychiatry and Neuropsychology, Maastricht University, Maastricht, The Netherlands
| | - Meghan Jones
- Department of Molecular Medicine, The Scripps Research Institute, Jupiter, FL USA,Department of Neuroscience, The Scripps Research Institute, Jupiter, FL USA
| | - Clara Snijders
- School for Mental Health and Neuroscience, Department of Psychiatry and Neuropsychology, Maastricht University, Maastricht, The Netherlands
| | - Torsten Klengel
- Department of Psychiatry, Harvard Medical School, McLean Hospital, Belmont, MA, USA
| | - Nadine F. Joseph
- Department of Molecular Medicine, The Scripps Research Institute, Jupiter, FL USA,Department of Neuroscience, The Scripps Research Institute, Jupiter, FL USA
| | - Julian Krauskopf
- Department of Toxicogenomics, Maastricht University, Maastricht, The Netherlands
| | - Jos Kleinjans
- Department of Toxicogenomics, Maastricht University, Maastricht, The Netherlands
| | - Christiaan H. Vinkers
- Brain Center Rudolf Magnus, Department of Psychiatry, University Medical Center Utrecht, The Netherlands
| | - Marco P.M. Boks
- Brain Center Rudolf Magnus, Department of Psychiatry, University Medical Center Utrecht, The Netherlands
| | - Elbert Geuze
- Brain Center Rudolf Magnus, Department of Psychiatry, University Medical Center Utrecht, The Netherlands.,Research Centre for Military Mental Healthcare, Ministry of Defence, Utrecht, The Netherlands
| | - Eric Vermetten
- Brain Center Rudolf Magnus, Department of Psychiatry, University Medical Center Utrecht, The Netherlands.,Research Centre for Military Mental Healthcare, Ministry of Defence, Utrecht, The Netherlands.,Department of Psychiatry, Leiden University Medical Center, Leiden, The Netherlands
| | - Sabina Berretta
- Department of Psychiatry, Harvard Medical School, McLean Hospital, Belmont, MA, USA
| | - Kerry J. Ressler
- Department of Psychiatry, Harvard Medical School, McLean Hospital, Belmont, MA, USA
| | - Bart P.F. Rutten
- School for Mental Health and Neuroscience, Department of Psychiatry and Neuropsychology, Maastricht University, Maastricht, The Netherlands
| | - Gavin Rumbaugh
- Department of Neuroscience, The Scripps Research Institute, Jupiter, FL USA
| | - Courtney A. Miller
- Department of Molecular Medicine, The Scripps Research Institute, Jupiter, FL USA,Department of Neuroscience, The Scripps Research Institute, Jupiter, FL USA.,Correspondence to: Courtney Miller , 130 Scripps Way, Jupiter, FL 33458, Phone 561-228-2958
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Kiryk A, Janusz A, Zglinicki B, Turkes E, Knapska E, Konopka W, Lipp HP, Kaczmarek L. IntelliCage as a tool for measuring mouse behavior - 20 years perspective. Behav Brain Res 2020; 388:112620. [PMID: 32302617 DOI: 10.1016/j.bbr.2020.112620] [Citation(s) in RCA: 63] [Impact Index Per Article: 15.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2020] [Accepted: 03/23/2020] [Indexed: 12/21/2022]
Abstract
Since the 1980s, we have witnessed the rapid development of genetically modified mouse models of human diseases. A large number of transgenic and knockout mice have been utilized in basic and applied research, including models of neurodegenerative and neuropsychiatric disorders. To assess the biological function of mutated genes, modern techniques are critical to detect changes in behavioral phenotypes. We review the IntelliCage, a high-throughput system that is used for behavioral screening and detailed analyses of complex behaviors in mice. The IntelliCage was introduced almost two decades ago and has been used in over 150 studies to assess both spontaneous and cognitive behaviors. We present a critical analysis of experimental data that have been generated using this device.
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Affiliation(s)
- Anna Kiryk
- Nencki Institute of Experimental Biology, Polish Academy of Sciences, Warsaw, Poland
| | - Artur Janusz
- Nencki Institute of Experimental Biology, Polish Academy of Sciences, Warsaw, Poland
| | - Bartosz Zglinicki
- Nencki Institute of Experimental Biology, Polish Academy of Sciences, Warsaw, Poland
| | - Emir Turkes
- Taub Institute for Research on Alzheimer's Disease and the Aging Brain, Columbia University, Irving Medical Center, New York, NY, USA
| | - Ewelina Knapska
- BRAINCITY, Nencki Institute of Experimental Biology, Polish Academy of Sciences, Warsaw, Poland
| | - Witold Konopka
- Nencki Institute of Experimental Biology, Polish Academy of Sciences, Warsaw, Poland
| | - Hans-Peter Lipp
- Institute of Anatomy, University of Zurich, Zurich, Switzerland; Institute of Evolutionary Medicine, University of Zurich, Zurich, Switzerland
| | - Leszek Kaczmarek
- BRAINCITY, Nencki Institute of Experimental Biology, Polish Academy of Sciences, Warsaw, Poland.
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Niu Y, Zhou B, Wan C, wu R, Sun H, Lu D. Down-regulation of miR-181a promotes microglial M1 polarization through increasing expression of NDRG2. ACTA ACUST UNITED AC 2020. [DOI: 10.31491/apt.2020.03.013] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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43
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Chen M, Zheng J, Liu G, Zeng C, Xu E, Zhu W, Anderson GJ, Chen H. High Dietary Iron Disrupts Iron Homeostasis and Induces Amyloid-β and Phospho-τ Expression in the Hippocampus of Adult Wild-Type and APP/PS1 Transgenic Mice. J Nutr 2019; 149:2247-2254. [PMID: 31373375 PMCID: PMC6887700 DOI: 10.1093/jn/nxz168] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2019] [Revised: 05/21/2019] [Accepted: 06/25/2019] [Indexed: 12/27/2022] Open
Abstract
BACKGROUND Brain iron deposition is a feature of Alzheimer disease and may contribute to its development. However, the relative contribution of dietary iron remains unclear. OBJECTIVES We investigated the impact of high dietary iron on brain pathological changes and cognitive function in adult wild-type (WT) mice and amyloid precursor protein/presenilin 1 (APP/PS1) double transgenic mice. METHODS Male WT mice and APP/PS1 mice aged 10 wk were fed either a control diet (66 mg Fe/kg) (WT-Ctrl and APP/PS1-Ctrl) or a high iron diet (14 g Fe/kg) (WT-High Fe and APP/PS1-High Fe) for 20 wk. Iron concentrations in brain regions were measured by atomic absorption spectrophotometry. Brain iron staining and amyloid-β (Aβ) immunostaining were performed. Protein expressions in the hippocampus were determined by immunoblotting. Superoxide dismutase (SOD) activity and malondialdehyde concentration were examined. Cognitive functions were tested with the Morris water maze system. RESULTS In the hippocampus, APP/PS1-High Fe mice had significantly higher iron concentration (2.5-fold) and ferritin (2.0-fold) than APP/PS1-Ctrl mice (P < 0.001), and WT-High Fe mice had significantly higher ferritin (2.0-fold) than WT-Ctrl mice (P < 0.001). Interestingly, APP/PS1 mice had significantly higher iron concentration (2-3-fold) and ferritin (2-2.5-fold) than WT mice fed either diet (P < 0.001). Histological analysis indicated that iron accumulated in the hippocampal dentate gyrus region in APP/PS1 mice, consistent with the pattern of Aβ deposition. For both mouse strains, iron treatment induced Aβ and phospho-τ expression (1.5-3-fold) in the hippocampus, but had little impact on oxidative stress and cognitive function. Furthermore, APP/PS1 mice had significantly lower SOD activity and higher malondialdehyde concentration than WT mice in the hippocampus (P < 0.0001), paralleled by apparent cognitive dysfunction. CONCLUSIONS Dietary iron overload induces iron disorder and Aβ and phospho-τ expression in the hippocampus of adult WT and APP/PS1 transgenic mice.
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Affiliation(s)
- Min Chen
- Jiangsu Key Laboratory of Molecular Medicine, Medical School of Nanjing University, Nanjing, China,Address correspondence to HC (e-mail: )
| | - Jiashuo Zheng
- Jiangsu Key Laboratory of Molecular Medicine, Medical School of Nanjing University, Nanjing, China
| | - Guohao Liu
- Jiangsu Key Laboratory of Molecular Medicine, Medical School of Nanjing University, Nanjing, China
| | - Chong Zeng
- Jiangsu Key Laboratory of Molecular Medicine, Medical School of Nanjing University, Nanjing, China
| | - En Xu
- Jiangsu Key Laboratory of Molecular Medicine, Medical School of Nanjing University, Nanjing, China
| | - Wenjie Zhu
- Jiangsu Key Laboratory of Molecular Medicine, Medical School of Nanjing University, Nanjing, China
| | | | - Huijun Chen
- Jiangsu Key Laboratory of Molecular Medicine, Medical School of Nanjing University, Nanjing, China
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Konovalova J, Gerasymchuk D, Parkkinen I, Chmielarz P, Domanskyi A. Interplay between MicroRNAs and Oxidative Stress in Neurodegenerative Diseases. Int J Mol Sci 2019; 20:ijms20236055. [PMID: 31801298 PMCID: PMC6929013 DOI: 10.3390/ijms20236055] [Citation(s) in RCA: 124] [Impact Index Per Article: 24.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2019] [Revised: 11/23/2019] [Accepted: 11/28/2019] [Indexed: 12/11/2022] Open
Abstract
MicroRNAs are post-transcriptional regulators of gene expression, crucial for neuronal differentiation, survival, and activity. Age-related dysregulation of microRNA biogenesis increases neuronal vulnerability to cellular stress and may contribute to the development and progression of neurodegenerative diseases. All major neurodegenerative disorders are also associated with oxidative stress, which is widely recognized as a potential target for protective therapies. Albeit often considered separately, microRNA networks and oxidative stress are inextricably entwined in neurodegenerative processes. Oxidative stress affects expression levels of multiple microRNAs and, conversely, microRNAs regulate many genes involved in an oxidative stress response. Both oxidative stress and microRNA regulatory networks also influence other processes linked to neurodegeneration, such as mitochondrial dysfunction, deregulation of proteostasis, and increased neuroinflammation, which ultimately lead to neuronal death. Modulating the levels of a relatively small number of microRNAs may therefore alleviate pathological oxidative damage and have neuroprotective activity. Here, we review the role of individual microRNAs in oxidative stress and related pathways in four neurodegenerative conditions: Alzheimer’s (AD), Parkinson’s (PD), Huntington’s (HD) disease, and amyotrophic lateral sclerosis (ALS). We also discuss the problems associated with the use of oversimplified cellular models and highlight perspectives of studying microRNA regulation and oxidative stress in human stem cell-derived neurons.
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Affiliation(s)
- Julia Konovalova
- Institute of Biotechnology, HiLIFE, University of Helsinki, 00014 Helsinki, Finland; (J.K.); (D.G.); (I.P.)
| | - Dmytro Gerasymchuk
- Institute of Biotechnology, HiLIFE, University of Helsinki, 00014 Helsinki, Finland; (J.K.); (D.G.); (I.P.)
- Institute of Molecular Biology and Genetics, NASU, Kyiv 03143, Ukraine
| | - Ilmari Parkkinen
- Institute of Biotechnology, HiLIFE, University of Helsinki, 00014 Helsinki, Finland; (J.K.); (D.G.); (I.P.)
| | - Piotr Chmielarz
- Department of Brain Biochemistry, Maj Institute of Pharmacology, Polish Academy of Sciences, 31-343 Krakow, Poland
| | - Andrii Domanskyi
- Institute of Biotechnology, HiLIFE, University of Helsinki, 00014 Helsinki, Finland; (J.K.); (D.G.); (I.P.)
- Correspondence: ; Tel.: +358-50-448-4545
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Sun X, Cui S, Fu X, Liu C, Wang Z, Liu Y. MicroRNA-146-5p promotes proliferation, migration and invasion in lung cancer cells by targeting claudin-12. Cancer Biomark 2019; 25:89-99. [PMID: 31006666 DOI: 10.3233/cbm-182374] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Abstract
MicroRNAs (miRNAs) have been regarded as important regulators in different pathological processes of cells. Abnormal expression of miRNAs is frequently associated with cell proliferation, metastasis and apoptosis in various cancers. This study aimed to explore the effect of miR-146-5p on cell growth, metastasis and its mechanism in lung cancer cells. The expressions of miR-146-5p and claudin-12 in A549 and WI-38 cells were altered by transient transfection. Cisplatin was used to develop cells for regulation of cisplatin sensitivity. Cell viability, migration, invasion, and apoptosis were analyzed by CCK-8, Transwell and flow cytometry assays. The protein expressions of Wnt/β-catenin and PI3K/AKT/MAPK pathway-related factors were detected. miR-146-5p suppression inhibited cell viability, migration and invasion but promoted apoptosis in A549 cells. Moreover, overexpression of miR-146-5p reduced the sensitivity of A549 cells and WI-38 cells to cisplatin. In addition, claudin-12 was a direct target of miR-146-5p and was negatively regulated by miR-146-5p. Claudin-12 silence significantly reversed miR-146-5p suppression-mediated anti-tumor effects in A549 cells. Furthermore, miR-146-5p overexpression activated Wnt/β-catenin and PI3K/AKT/MAPK signal pathways via down-regulation of claudin-12. The results indicated that miR-146-5p promoted cell viability, migration and invasion, inhibited apoptosis and activated Wnt/β-catenin and PI3K/AKT/MAPK signal pathways by regulating claudin-12 expression in lung cancer cells.
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Affiliation(s)
- Xianghong Sun
- Department of Outpatient (Tumor), The Affiliated Hospital of Qingdao University (West Coast Branch), Qingdao, Shandong, China
| | - Shichao Cui
- Department of Respiratory Medicine, The Affiliated Hospital of Qingdao University (West Coast Branch), Qingdao, Shandong, China
| | - Xiaofeng Fu
- Department of Outpatient, The Affiliated Hospital of Qingdao University (West Coast Branch), Qingdao, Shandong, China
| | - Chuan Liu
- Department of Surgery, Qingdao West Coast New District No.2 People's Hospital, Qingdao, Shandong, China
| | - Zhi Wang
- Department of Pharmacy, The Affiliated Hospital of Qingdao University (Shinan Branch), Qingdao, Shandong, China
| | - Yuanwei Liu
- Department of Cancer Comprehensive Therapy, The Affiliated Hospital of Qingdao University (West Coast Branch), Qingdao, Shandong, China
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46
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Warnock ND, Cox D, McCoy C, Morris R, Dalzell JJ. Transcriptional variation and divergence of host-finding behaviour in Steinernema carpocapsae infective juveniles. BMC Genomics 2019; 20:884. [PMID: 31752671 PMCID: PMC6868747 DOI: 10.1186/s12864-019-6179-y] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2018] [Accepted: 10/10/2019] [Indexed: 11/15/2022] Open
Abstract
Background Steinernema carpocapsae is an entomopathogenic nematode that employs nictation and jumping behaviours to find potential insect hosts. Here we aimed to investigate the transcriptional basis of variant host-finding behaviours in the infective juvenile (IJ) stage of three S. carpocapsae strains (ALL, Breton and UK1), with a focus on neuronal genes known to influence behaviour in other nematode species. Identifying gene expression changes that correlate with variant host-finding behaviours will further our understanding of nematode biology. Results RNA-seq analysis revealed that whilst up to 28% of the S. carpocapsae transcriptome was differentially expressed (P < 0.0001) between strains, remarkably few of the most highly differentially expressed genes (> 2 log2 fold change, P < 0.0001) were from neuronal gene families. S. carpocapsae Breton displays increased chemotaxis toward the laboratory host Galleria mellonella, relative to the other strains. This correlates with the up-regulation of four srsx chemosensory GPCR genes, and a sodium transporter gene, asic-2, relative to both ALL and UK1 strains. The UK1 strain exhibits a decreased nictation phenotype relative to ALL and Breton strains, which correlates with co-ordinate up-regulation of neuropeptide like protein 36 (nlp-36), and down-regulation of an srt family GPCR gene, and a distinct asic-2-like sodium channel paralogue. To further investigate the link between transcriptional regulation and behavioural variation, we sequenced microRNAs across IJs of each strain. We have identified 283 high confidence microRNA genes, yielding 321 predicted mature microRNAs in S. carpocapsae, and find that up to 36% of microRNAs are differentially expressed (P < 0.0001) between strains. Many of the most highly differentially expressed microRNAs (> 2 log2 fold, P < 0.0001) are predicted to regulate a variety of neuronal genes that may contribute to variant host-finding behaviours. We have also found evidence for differential gene isoform usage between strains, which alters predicted microRNA interactions, and could contribute to the diversification of behaviour. Conclusions These data provide insight to the transcriptional basis of behavioural variation in S. carpocapsae, supporting efforts to understand the molecular basis of complex behaviours in nematodes.
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Affiliation(s)
- Neil D Warnock
- School of Biological Sciences, Queen's University Belfast, Belfast, Northern Ireland
| | - Deborah Cox
- School of Biological Sciences, Queen's University Belfast, Belfast, Northern Ireland
| | - Ciaran McCoy
- School of Biological Sciences, Queen's University Belfast, Belfast, Northern Ireland
| | - Robert Morris
- School of Biological Sciences, Queen's University Belfast, Belfast, Northern Ireland
| | - Johnathan J Dalzell
- School of Biological Sciences, Queen's University Belfast, Belfast, Northern Ireland.
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Qiu F, Mao X, Liu P, Wu J, Zhang Y, Sun D, Zhu Y, Gong L, Shao M, Fan K, Chen J, Lu J, Jiang Y, Zhang Y, Curia G, Li A, He M. microRNA Deficiency in VIP+ Interneurons Leads to Cortical Circuit Dysfunction. Cereb Cortex 2019; 30:2229-2249. [PMID: 33676371 DOI: 10.1093/cercor/bhz236] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/01/2019] [Revised: 01/01/2019] [Accepted: 01/01/2019] [Indexed: 12/13/2022] Open
Abstract
Genetically distinct GABAergic interneuron subtypes play diverse roles in cortical circuits. Previous studies revealed that microRNAs (miRNAs) are differentially expressed in cortical interneuron subtypes, and are essential for the normal migration, maturation, and survival of medial ganglionic eminence-derived interneuron subtypes. How miRNAs function in vasoactive intestinal peptide expressing (VIP+) interneurons derived from the caudal ganglionic eminence remains elusive. Here, we conditionally removed Dicer in postmitotic VIP+ interneurons to block miRNA biogenesis. We found that the intrinsic and synaptic properties of VIP+ interneurons and pyramidal neurons were concordantly affected prior to a progressive loss of VIP+ interneurons. In vivo recording further revealed elevated cortical local field potential power. Mutant mice had a shorter life span but exhibited better spatial working memory and motor coordination. Our results demonstrate that miRNAs are indispensable for the function and survival of VIP+ interneurons, and highlight a key role of VIP+ interneurons in cortical circuits.
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Affiliation(s)
- Fang Qiu
- Department of Neurology, State Key Laboratory of Medical Neurobiology, MOE Frontiers Center for Brain Science, Institutes of Brain Science, Zhongshan Hospital, Fudan University, Shanghai 200032, China
| | - Xingfeng Mao
- Jiangsu Key Laboratory of Brain Disease and Bioinformation, Research Center for Biochemistry and Molecular Biology, Xuzhou Medical University, Xuzhou 221004, China
| | - Penglai Liu
- Jiangsu Key Laboratory of Brain Disease and Bioinformation, Research Center for Biochemistry and Molecular Biology, Xuzhou Medical University, Xuzhou 221004, China
| | - Jinyun Wu
- Department of Neurology, State Key Laboratory of Medical Neurobiology, MOE Frontiers Center for Brain Science, Institutes of Brain Science, Zhongshan Hospital, Fudan University, Shanghai 200032, China
| | - Yuan Zhang
- State Key Laboratory of Medical Neurobiology, MOE Frontiers Center for Brain Science, Institutes of Brain Science, Fudan University, Shanghai 200032, China
| | - Daijing Sun
- State Key Laboratory of Medical Neurobiology, MOE Frontiers Center for Brain Science, Institutes of Brain Science, Fudan University, Shanghai 200032, China
| | - Yueyan Zhu
- State Key Laboratory of Medical Neurobiology, MOE Frontiers Center for Brain Science, Institutes of Brain Science, Fudan University, Shanghai 200032, China
| | - Ling Gong
- Department of Neurology, State Key Laboratory of Medical Neurobiology, MOE Frontiers Center for Brain Science, Institutes of Brain Science, Zhongshan Hospital, Fudan University, Shanghai 200032, China
| | - Mengmeng Shao
- Department of Anatomy and Physiology, Shanghai Jiaotong University School of Medicine, Shanghai 200025, China
| | - Keyang Fan
- Department of Neurology, State Key Laboratory of Medical Neurobiology, MOE Frontiers Center for Brain Science, Institutes of Brain Science, Zhongshan Hospital, Fudan University, Shanghai 200032, China
| | - Junjie Chen
- Department of Neurology, State Key Laboratory of Medical Neurobiology, MOE Frontiers Center for Brain Science, Institutes of Brain Science, Zhongshan Hospital, Fudan University, Shanghai 200032, China
| | - Jiangteng Lu
- Department of Anatomy and Physiology, Shanghai Jiaotong University School of Medicine, Shanghai 200025, China
| | - Yan Jiang
- State Key Laboratory of Medical Neurobiology, MOE Frontiers Center for Brain Science, Institutes of Brain Science, Fudan University, Shanghai 200032, China
| | - Yubin Zhang
- Department of Toxicology, School of Public Health, Fudan University, Shanghai 200032, China
| | - Giulia Curia
- Department of Biomedical, Metabolic and Neural Sciences, University of Modena and Reggio Emilia, Modena 41121, Italy.,Center for Neuroscience and Neurotechnology, University of Modena and Reggio Emilia, Modena 41121, Italy
| | - Anan Li
- Jiangsu Key Laboratory of Brain Disease and Bioinformation, Research Center for Biochemistry and Molecular Biology, Xuzhou Medical University, Xuzhou 221004, China
| | - Miao He
- Department of Neurology, State Key Laboratory of Medical Neurobiology, MOE Frontiers Center for Brain Science, Institutes of Brain Science, Zhongshan Hospital, Fudan University, Shanghai 200032, China
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Simeoli R, Fierabracci A. Insights into the Role of MicroRNAs in the Onset and Development of Diabetic Neuropathy. Int J Mol Sci 2019; 20:ijms20184627. [PMID: 31540445 PMCID: PMC6770207 DOI: 10.3390/ijms20184627] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2019] [Revised: 08/30/2019] [Accepted: 09/11/2019] [Indexed: 12/18/2022] Open
Abstract
Diabetic neuropathy is a serious complication of chronic hyperglycemia in diabetes patients. This complication can involve both peripheral sensorimotor and autonomic nervous system. The precise nature of injury to the peripheral nerves mediated by chronic hyperglycemia is unknown; however, several mechanisms have been proposed including polyol pathway activation, enhanced glycation of proteins and lipids, increased oxidative stress, and cytokine release in the site of injury. MicroRNAs (miRNAs) are small non-coding RNAs that mediate RNA interference by post-transcriptionally modulating gene expression and protein synthesis. Therefore, they have been implicated in several developmental, physiological, and pathophysiological processes where they modulate the expression of different proteins. Recently, miRNAs gained an increasing attention also for their role as diagnostic test in many diseases due to their stability in serum and their easy detection. Furthermore, recent studies suggest that miRNAs may be involved in diabetic neuropathy although their role in the onset and the development of this complication is not fully understood. In this review, we discuss the most recent literature providing evidence for miRNAs role in diabetic neuropathy opening new pathways to improve both early diagnosis and treatment of this complication.
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Affiliation(s)
- Raffaele Simeoli
- Infectivology and Clinical Trials Area, Bambino Gesù Children's Hospital, IRCCS, Viale San Paolo 15, 00146 Rome, Italy.
| | - Alessandra Fierabracci
- Infectivology and Clinical Trials Area, Bambino Gesù Children's Hospital, IRCCS, Viale San Paolo 15, 00146 Rome, Italy.
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Kiltschewskij D, Cairns MJ. Temporospatial guidance of activity-dependent gene expression by microRNA: mechanisms and functional implications for neural plasticity. Nucleic Acids Res 2019; 47:533-545. [PMID: 30535081 PMCID: PMC6344879 DOI: 10.1093/nar/gky1235] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2018] [Accepted: 11/30/2018] [Indexed: 01/08/2023] Open
Abstract
MicroRNA are major regulators of neuronal gene expression at the post-transcriptional and translational levels. This layer of control is critical for spatially and temporally restricted gene expression, facilitating highly dynamic changes to cellular structure and function associated with neural plasticity. Investigation of microRNA function in the neural system, however, is at an early stage, and many aspects of the mechanisms employing these small non-coding RNAs remain unclear. In this article, we critically review current knowledge pertaining to microRNA function in neural activity, with emphasis on mechanisms of microRNA repression, their subcellular remodelling and functional impacts on neural plasticity and behavioural phenotypes.
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Affiliation(s)
- Dylan Kiltschewskij
- School of Biomedical Sciences and Pharmacy, The University of Newcastle, Callaghan, NSW, 2323, Australia.,Centre for Brain and Mental Health Research, Hunter Medical Research Institute, New Lambton, NSW, 2323, Australia
| | - Murray J Cairns
- School of Biomedical Sciences and Pharmacy, The University of Newcastle, Callaghan, NSW, 2323, Australia.,Centre for Brain and Mental Health Research, Hunter Medical Research Institute, New Lambton, NSW, 2323, Australia
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Temporal dynamics of miRNAs in human DLPFC and its association with miRNA dysregulation in schizophrenia. Transl Psychiatry 2019; 9:196. [PMID: 31431609 PMCID: PMC6702224 DOI: 10.1038/s41398-019-0538-y] [Citation(s) in RCA: 25] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/20/2019] [Revised: 05/13/2019] [Accepted: 06/20/2019] [Indexed: 02/07/2023] Open
Abstract
Brain development is dependent on programmed gene expression, which is both genetically and epigenetically regulated. Post-transcriptional regulation of gene expression by microRNAs (miRNAs) is essential for brain development. As abnormal brain development is hypothesized to be associated with schizophrenia, miRNAs are an intriguing target for this disorder. The aims of this study were to determine the temporal dynamics of miRNA expression in the human dorsolateral prefrontal cortex (DLPFC), and the relationship between miRNA's temporal expression pattern and dysregulation in schizophrenia. This study used next-generation sequencing to characterize the temporal dynamics of miRNA expression in the DLPFC of 109 normal subjects (second trimester-74 years of age) and miRNA expression changes in 34 schizophrenia patients. Unlike mRNAs, the majority of which exhibits a wave of change in fetuses, most miRNAs are preferentially expressed during a certain period before puberty. It is noted that in schizophrenia patients, miRNAs normally enriched in infants tend to be upregulated, while those normally enriched in prepuberty tend to be downregulated, and the targets of these miRNAs are enriched for genes encoding synaptic proteins and those associated with schizophrenia. In addition, miR-936 and miR-3162 were found to be increased in the DLPFC of patients with schizophrenia. These findings reveal the temporal dynamics of miRNAs in the human DLPFC, implicate the importance of miRNAs in DLPFC development, and suggest a possible link between schizophrenia and dysregulation of miRNAs enriched in infancy and prepuberty.
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