1
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Smies CW, Bellfy L, Wright DS, Bennetts SG, Urban MW, Brunswick CA, Shu G, Kwapis JL. Pharmacological HDAC3 inhibition alters memory updating in young and old male mice. Front Mol Neurosci 2024; 17:1429880. [PMID: 38989157 PMCID: PMC11234845 DOI: 10.3389/fnmol.2024.1429880] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2024] [Accepted: 06/17/2024] [Indexed: 07/12/2024] Open
Abstract
Long-term memories are not stored in a stable state but must be flexible and dynamic to maintain relevance in response to new information. Existing memories are thought to be updated through the process of reconsolidation, in which memory retrieval initiates destabilization and updating to incorporate new information. Memory updating is impaired in old age, yet little is known about the mechanisms that go awry. One potential mechanism is the repressive histone deacetylase 3 (HDAC3), which is a powerful negative regulator of memory formation that contributes to age-related impairments in memory formation. Here, we tested whether HDAC3 also contributes to age-related impairments in memory updating using the Objects in Updated Locations (OUL) paradigm. We show that blocking HDAC3 immediately after updating with the pharmacological inhibitor RGFP966 ameliorated age-related impairments in memory updating in 18-m.o. male mice. Surprisingly, we found that post-update HDAC3 inhibition in young (3-m.o.) male mice had no effect on memory updating but instead impaired memory for the original information, suggesting that the original and updated information may compete for expression at test and HDAC3 helps regulate which information is expressed. To test this idea, we next assessed whether HDAC3 inhibition would improve memory updating in young male mice given a weak, subthreshold update. Consistent with our hypothesis, we found that HDAC3 blockade strengthened the subthreshold update without impairing memory for the original information, enabling balanced expression of the original and updated information. Together, this research suggests that HDAC3 may contribute to age-related impairments in memory updating and may regulate the strength of a memory update in young mice, shifting the balance between the original and updated information at test.
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Affiliation(s)
- Chad W. Smies
- Department of Biology, Pennsylvania State University, University Park, PA, United States
- Center for the Molecular Investigation of Neurological Disorders (CMIND), The Huck Institutes of the Life Sciences, Pennsylvania State University, University Park, PA, United States
| | - Lauren Bellfy
- Department of Biology, Pennsylvania State University, University Park, PA, United States
- Center for the Molecular Investigation of Neurological Disorders (CMIND), The Huck Institutes of the Life Sciences, Pennsylvania State University, University Park, PA, United States
| | - Destiny S. Wright
- Department of Biology, Pennsylvania State University, University Park, PA, United States
- Center for the Molecular Investigation of Neurological Disorders (CMIND), The Huck Institutes of the Life Sciences, Pennsylvania State University, University Park, PA, United States
| | - Sofia G. Bennetts
- Department of Biology, Pennsylvania State University, University Park, PA, United States
- Center for the Molecular Investigation of Neurological Disorders (CMIND), The Huck Institutes of the Life Sciences, Pennsylvania State University, University Park, PA, United States
| | - Mark W. Urban
- Department of Biology, Pennsylvania State University, University Park, PA, United States
- Center for the Molecular Investigation of Neurological Disorders (CMIND), The Huck Institutes of the Life Sciences, Pennsylvania State University, University Park, PA, United States
| | - Chad A. Brunswick
- Department of Biology, Pennsylvania State University, University Park, PA, United States
- Center for the Molecular Investigation of Neurological Disorders (CMIND), The Huck Institutes of the Life Sciences, Pennsylvania State University, University Park, PA, United States
| | - Guanhua Shu
- Department of Biology, Pennsylvania State University, University Park, PA, United States
- Center for the Molecular Investigation of Neurological Disorders (CMIND), The Huck Institutes of the Life Sciences, Pennsylvania State University, University Park, PA, United States
| | - Janine L. Kwapis
- Department of Biology, Pennsylvania State University, University Park, PA, United States
- Center for the Molecular Investigation of Neurological Disorders (CMIND), The Huck Institutes of the Life Sciences, Pennsylvania State University, University Park, PA, United States
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2
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Ament SA, Campbell RR, Lobo MK, Receveur JP, Agrawal K, Borjabad A, Byrareddy SN, Chang L, Clarke D, Emani P, Gabuzda D, Gaulton KJ, Giglio M, Giorgi FM, Gok B, Guda C, Hadas E, Herb BR, Hu W, Huttner A, Ishmam MR, Jacobs MM, Kelschenbach J, Kim DW, Lee C, Liu S, Liu X, Madras BK, Mahurkar AA, Mash DC, Mukamel EA, Niu M, O'Connor RM, Pagan CM, Pang APS, Pillai P, Repunte-Canonigo V, Ruzicka WB, Stanley J, Tickle T, Tsai SYA, Wang A, Wills L, Wilson AM, Wright SN, Xu S, Yang J, Zand M, Zhang L, Zhang J, Akbarian S, Buch S, Cheng CS, Corley MJ, Fox HS, Gerstein M, Gummuluru S, Heiman M, Ho YC, Kellis M, Kenny PJ, Kluger Y, Milner TA, Moore DJ, Morgello S, Ndhlovu LC, Rana TM, Sanna PP, Satterlee JS, Sestan N, Spector SA, Spudich S, Tilgner HU, Volsky DJ, White OR, Williams DW, Zeng H. The single-cell opioid responses in the context of HIV (SCORCH) consortium. Mol Psychiatry 2024:10.1038/s41380-024-02620-7. [PMID: 38879719 DOI: 10.1038/s41380-024-02620-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/05/2023] [Revised: 05/12/2024] [Accepted: 05/17/2024] [Indexed: 06/19/2024]
Abstract
Substance use disorders (SUD) and drug addiction are major threats to public health, impacting not only the millions of individuals struggling with SUD, but also surrounding families and communities. One of the seminal challenges in treating and studying addiction in human populations is the high prevalence of co-morbid conditions, including an increased risk of contracting a human immunodeficiency virus (HIV) infection. Of the ~15 million people who inject drugs globally, 17% are persons with HIV. Conversely, HIV is a risk factor for SUD because chronic pain syndromes, often encountered in persons with HIV, can lead to an increased use of opioid pain medications that in turn can increase the risk for opioid addiction. We hypothesize that SUD and HIV exert shared effects on brain cell types, including adaptations related to neuroplasticity, neurodegeneration, and neuroinflammation. Basic research is needed to refine our understanding of these affected cell types and adaptations. Studying the effects of SUD in the context of HIV at the single-cell level represents a compelling strategy to understand the reciprocal interactions among both conditions, made feasible by the availability of large, extensively-phenotyped human brain tissue collections that have been amassed by the Neuro-HIV research community. In addition, sophisticated animal models that have been developed for both conditions provide a means to precisely evaluate specific exposures and stages of disease. We propose that single-cell genomics is a uniquely powerful technology to characterize the effects of SUD and HIV in the brain, integrating data from human cohorts and animal models. We have formed the Single-Cell Opioid Responses in the Context of HIV (SCORCH) consortium to carry out this strategy.
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Affiliation(s)
- Seth A Ament
- University of Maryland School of Medicine, Baltimore, MD, USA.
| | | | - Mary Kay Lobo
- University of Maryland School of Medicine, Baltimore, MD, USA
| | | | | | | | | | - Linda Chang
- University of Maryland School of Medicine, Baltimore, MD, USA
| | | | | | - Dana Gabuzda
- Dana-Farber Cancer Institute, Harvard Medical School, Boston, MA, USA
| | | | - Michelle Giglio
- University of Maryland School of Medicine, Baltimore, MD, USA
| | | | | | | | - Eran Hadas
- Icahn School of Medicine at Mount Sinai, New York, NY, USA
| | - Brian R Herb
- University of Maryland School of Medicine, Baltimore, MD, USA
| | - Wen Hu
- Weill Cornell Medicine, New York, NY, USA
| | | | | | | | | | | | - Cheyu Lee
- University of California Irvine, Irvine, CA, USA
| | - Shuhui Liu
- Icahn School of Medicine at Mount Sinai, New York, NY, USA
| | - Xiaokun Liu
- Icahn School of Medicine at Mount Sinai, New York, NY, USA
| | | | - Anup A Mahurkar
- University of Maryland School of Medicine, Baltimore, MD, USA
| | | | | | - Meng Niu
- University of Nebraska Medical Center, Omaha, NE, USA
| | | | | | | | - Piya Pillai
- Icahn School of Medicine at Mount Sinai, New York, NY, USA
| | | | - W Brad Ruzicka
- McLean Hospital, Harvard Medical School, Belmont, MA, USA
| | | | | | | | - Allen Wang
- University of California San Diego, La Jolla, CA, USA
| | - Lauren Wills
- Icahn School of Medicine at Mount Sinai, New York, NY, USA
| | | | | | - Siwei Xu
- University of California Irvine, Irvine, CA, USA
| | | | - Maryam Zand
- University of California San Diego, La Jolla, CA, USA
| | - Le Zhang
- Yale School of Medicine, New Haven, CT, USA
| | - Jing Zhang
- University of California Irvine, Irvine, CA, USA
| | | | - Shilpa Buch
- University of Nebraska Medical Center, Omaha, NE, USA
| | | | | | - Howard S Fox
- University of Nebraska Medical Center, Omaha, NE, USA
| | | | | | - Myriam Heiman
- Massachusetts Institute of Technology, Cambridge, MA, USA
| | - Ya-Chi Ho
- Yale School of Medicine, New Haven, CT, USA
| | - Manolis Kellis
- Massachusetts Institute of Technology, Cambridge, MA, USA
| | - Paul J Kenny
- Icahn School of Medicine at Mount Sinai, New York, NY, USA
| | | | | | - David J Moore
- University of California San Diego, La Jolla, CA, USA
| | - Susan Morgello
- Icahn School of Medicine at Mount Sinai, New York, NY, USA
| | | | - Tariq M Rana
- University of California San Diego, La Jolla, CA, USA
| | | | | | | | | | | | | | - David J Volsky
- Icahn School of Medicine at Mount Sinai, New York, NY, USA
| | - Owen R White
- University of Maryland School of Medicine, Baltimore, MD, USA
| | | | - Hongkui Zeng
- Allen Institute for Brain Science, Seattle, WA, USA
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3
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Smies CW, Bellfy L, Wright DS, Bennetts SS, Urban MW, Brunswick CA, Shu G, Kwapis JL. Pharmacological HDAC3 inhibition alters memory updating in young and old mice. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2024:2024.05.08.593015. [PMID: 38766057 PMCID: PMC11100699 DOI: 10.1101/2024.05.08.593015] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2024]
Abstract
Long-term memories are not stored in a stable state but must be flexible and dynamic to maintain relevance in response to new information. Existing memories are thought to be updated through the process of reconsolidation, in which memory retrieval initiates destabilization and updating to incorporate new information. Memory updating is impaired in old age, yet little is known about the mechanisms that go awry. One potential mechanism is the repressive histone deacetylase 3 (HDAC3), which is a powerful negative regulator of memory formation that contributes to age-related impairments in memory formation. Here, we tested whether HDAC3 also contributes to age-related impairments in memory updating using the Objects in Updated Locations (OUL) paradigm. We show that blocking HDAC3 immediately after updating with the pharmacological inhibitor RGFP966 ameliorated age-related impairments in memory updating in 18-m.o. mice. Surprisingly, we found that post-update HDAC3 inhibition in young (3-m.o.) mice had no effect on memory updating but instead impaired memory for the original information, suggesting that the original and updated information may compete for expression at test and HDAC3 helps regulate which information is expressed. To test this idea, we next assessed whether HDAC3 inhibition would improve memory updating in young mice given a weak, subthreshold update. Consistent with our hypothesis, we found that HDAC3 blockade strengthened the subthreshold update without impairing memory for the original information, enabling balanced expression of the original and updated information. Together, this research suggests that HDAC3 may contribute to age-related impairments in memory updating and may regulate the strength of a memory update in young mice, shifting the balance between the original and updated information at test.
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4
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Childs JE, Morabito S, Das S, Santelli C, Pham V, Kusche K, Vera VA, Reese F, Campbell RR, Matheos DP, Swarup V, Wood MA. Relapse to cocaine seeking is regulated by medial habenula NR4A2/NURR1 in mice. Cell Rep 2024; 43:113956. [PMID: 38489267 PMCID: PMC11100346 DOI: 10.1016/j.celrep.2024.113956] [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: 09/28/2022] [Revised: 09/11/2023] [Accepted: 02/28/2024] [Indexed: 03/17/2024] Open
Abstract
Drugs of abuse can persistently change the reward circuit in ways that contribute to relapse behavior, partly via mechanisms that regulate chromatin structure and function. Nuclear orphan receptor subfamily4 groupA member2 (NR4A2, also known as NURR1) is an important effector of histone deacetylase 3 (HDAC3)-dependent mechanisms in persistent memory processes and is highly expressed in the medial habenula (MHb), a region that regulates nicotine-associated behaviors. Here, expressing the Nr4a2 dominant negative (Nurr2c) in the MHb blocks reinstatement of cocaine seeking in mice. We use single-nucleus transcriptomics to characterize the molecular cascade following Nr4a2 manipulation, revealing changes in transcriptional networks related to addiction, neuroplasticity, and GABAergic and glutamatergic signaling. The network controlled by NR4A2 is characterized using a transcription factor regulatory network inference algorithm. These results identify the MHb as a pivotal regulator of relapse behavior and demonstrate the importance of NR4A2 as a key mechanism driving the MHb component of relapse.
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Affiliation(s)
- Jessica E Childs
- Department of Neurobiology and Behavior, University of California, Irvine, Irvine, CA 92697, USA; UC Irvine Center for Addiction Neuroscience, School of Biological Sciences, University of California, Irvine, Irvine, CA 92697, USA; Center for the Neurobiology of Learning and Memory, School of Biological Sciences, University of California, Irvine, Irvine, CA 92697, USA
| | - Samuel Morabito
- Institute for Memory Impairments and Neurological Disorders (MIND), University of California, Irvine, Irvine, CA 92697, USA; Mathematical, Computational, and Systems Biology (MCSB) Program, University of California, Irvine, Irvine, CA 92697, USA; Center for Complex Biological Systems, University of California, Irvine, Irvine, CA 92697, USA
| | - Sudeshna Das
- Department of Neurobiology and Behavior, University of California, Irvine, Irvine, CA 92697, USA; Institute for Memory Impairments and Neurological Disorders (MIND), University of California, Irvine, Irvine, CA 92697, USA
| | - Caterina Santelli
- Department of Neurobiology and Behavior, University of California, Irvine, Irvine, CA 92697, USA; UC Irvine Center for Addiction Neuroscience, School of Biological Sciences, University of California, Irvine, Irvine, CA 92697, USA; Center for the Neurobiology of Learning and Memory, School of Biological Sciences, University of California, Irvine, Irvine, CA 92697, USA
| | - Victoria Pham
- Department of Neurobiology and Behavior, University of California, Irvine, Irvine, CA 92697, USA; UC Irvine Center for Addiction Neuroscience, School of Biological Sciences, University of California, Irvine, Irvine, CA 92697, USA; Center for the Neurobiology of Learning and Memory, School of Biological Sciences, University of California, Irvine, Irvine, CA 92697, USA
| | - Kelly Kusche
- Department of Neurobiology and Behavior, University of California, Irvine, Irvine, CA 92697, USA; UC Irvine Center for Addiction Neuroscience, School of Biological Sciences, University of California, Irvine, Irvine, CA 92697, USA; Center for the Neurobiology of Learning and Memory, School of Biological Sciences, University of California, Irvine, Irvine, CA 92697, USA
| | - Vanessa Alizo Vera
- Department of Neurobiology and Behavior, University of California, Irvine, Irvine, CA 92697, USA; UC Irvine Center for Addiction Neuroscience, School of Biological Sciences, University of California, Irvine, Irvine, CA 92697, USA; Center for the Neurobiology of Learning and Memory, School of Biological Sciences, University of California, Irvine, Irvine, CA 92697, USA
| | - Fairlie Reese
- Center for Complex Biological Systems, University of California, Irvine, Irvine, CA 92697, USA; Department of Developmental and Cell Biology, University of California, Irvine, Irvine, CA 92697, USA
| | - Rianne R Campbell
- Department of Neurobiology and Behavior, University of California, Irvine, Irvine, CA 92697, USA; UC Irvine Center for Addiction Neuroscience, School of Biological Sciences, University of California, Irvine, Irvine, CA 92697, USA; Center for the Neurobiology of Learning and Memory, School of Biological Sciences, University of California, Irvine, Irvine, CA 92697, USA
| | - Dina P Matheos
- Department of Neurobiology and Behavior, University of California, Irvine, Irvine, CA 92697, USA; UC Irvine Center for Addiction Neuroscience, School of Biological Sciences, University of California, Irvine, Irvine, CA 92697, USA; Center for the Neurobiology of Learning and Memory, School of Biological Sciences, University of California, Irvine, Irvine, CA 92697, USA
| | - Vivek Swarup
- Department of Neurobiology and Behavior, University of California, Irvine, Irvine, CA 92697, USA; Institute for Memory Impairments and Neurological Disorders (MIND), University of California, Irvine, Irvine, CA 92697, USA.
| | - Marcelo A Wood
- Department of Neurobiology and Behavior, University of California, Irvine, Irvine, CA 92697, USA; UC Irvine Center for Addiction Neuroscience, School of Biological Sciences, University of California, Irvine, Irvine, CA 92697, USA; Center for the Neurobiology of Learning and Memory, School of Biological Sciences, University of California, Irvine, Irvine, CA 92697, USA; Institute for Memory Impairments and Neurological Disorders (MIND), University of California, Irvine, Irvine, CA 92697, USA.
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5
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Koijam AS, Singh KD, Nameirakpam BS, Haobam R, Rajashekar Y. Drug addiction and treatment: An epigenetic perspective. Biomed Pharmacother 2024; 170:115951. [PMID: 38043446 DOI: 10.1016/j.biopha.2023.115951] [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: 09/16/2023] [Revised: 11/23/2023] [Accepted: 11/27/2023] [Indexed: 12/05/2023] Open
Abstract
Drug addiction is a complex disease affected by numerous genetic and environmental factors. Brain regions in reward pathway, neuronal adaptations, genetic and epigenetic interactions causing transcriptional enhancement or repression of multiple genes induce different addiction phenotypes for varying duration. Addictive drug use causes epigenetic alterations and similarly epigenetic changes induced by environment can promote addiction. Epigenetic mechanisms include DNA methylation and post-translational modifications like methylation, acetylation, phosphorylation, ubiquitylation, sumoylation, dopaminylation and crotonylation of histones, and ADP-ribosylation. Non-coding RNAs also induce epigenetic changes. This review discusses these above areas and stresses the need for exploring epidrugs as a treatment alternative and adjunct, considering the limited success of current addiction treatment strategies. Epigenome editing complexes have lately been effective in eukaryotic systems. Targeted DNA cleavage techniques such as CRISPR-Cas9 system, CRISPR-dCas9 complexes, transcription activator-like effector nucleases (TALENs) and zinc-finger nucleases (ZFNs) have been exploited as targeted DNA recognition or anchoring platforms, fused with epigenetic writer or eraser proteins and delivered by transfection or transduction methods. Efficacy of epidrugs is seen in various neuropsychiatric conditions and initial results in addiction treatment involving model organisms are remarkable. Epidrugs present a promising alternative treatment for addiction.
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Affiliation(s)
- Arunkumar Singh Koijam
- Insect Bioresources Laboratory, Animal Bioresources Programme, Institute of Bioresources & Sustainable Development, Department of Biotechnology, Govt. of India, Takyelpat, Imphal 795001, Manipur, India
| | - Kabrambam Dasanta Singh
- Insect Bioresources Laboratory, Animal Bioresources Programme, Institute of Bioresources & Sustainable Development, Department of Biotechnology, Govt. of India, Takyelpat, Imphal 795001, Manipur, India
| | - Bunindro Singh Nameirakpam
- Insect Bioresources Laboratory, Animal Bioresources Programme, Institute of Bioresources & Sustainable Development, Department of Biotechnology, Govt. of India, Takyelpat, Imphal 795001, Manipur, India
| | - Reena Haobam
- Department of Biotechnology, Manipur University, Canchipur, Imphal 795003, Manipur, India
| | - Yallappa Rajashekar
- Insect Bioresources Laboratory, Animal Bioresources Programme, Institute of Bioresources & Sustainable Development, Department of Biotechnology, Govt. of India, Takyelpat, Imphal 795001, Manipur, India.
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6
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Campbell RR, Lobo MK. Neurobiological mechanisms underlying psychostimulant use. Curr Opin Neurobiol 2023; 83:102786. [PMID: 37776675 DOI: 10.1016/j.conb.2023.102786] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2023] [Revised: 09/01/2023] [Accepted: 09/01/2023] [Indexed: 10/02/2023]
Abstract
Rates of individuals struggling with psychostimulant use disorder (PSUD), defined as chronic use of psychostimulants despite negative consequences, are growing rapidly over the last few decades. However, there are no current pharmacotherapeutics to aid individuals in maintaining drug abstinence. Identifying the underlying neurobiological mechanisms that promote persistent craving and taking of psychostimulants is critical to creating novel pharmacological treatments for PSUD. Psychostimulant use dysregulates processes within the brain that are responsible for decision-making, reward, and memory formation to drive future drug-seeking. Here, we describe novel findings and theories on how psychostimulants impact mechanisms related to transcription, mitochondrial function, and synaptic plasticity within the reward system to drive drug-seeking. We also highlight work examining how psychostimulants impact neural networks through rewiring circuitry to drive addiction-related behaviors. Overall, this review aims to feature the latest progress in understanding the biological basis of PSUD and promising mechanisms for PSUD pharmacotherapeutics.
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Affiliation(s)
- Rianne R Campbell
- Department of Anatomy and Neurobiology, University of Maryland School of Medicine, Baltimore, MD, USA. https://twitter.com/RianneThoughts
| | - Mary Kay Lobo
- Department of Anatomy and Neurobiology, University of Maryland School of Medicine, Baltimore, MD, USA.
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7
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Raus AM, Fuller TD, Nelson NE, Valientes DA, Bayat A, Ivy AS. Early-life exercise primes the murine neural epigenome to facilitate gene expression and hippocampal memory consolidation. Commun Biol 2023; 6:18. [PMID: 36611093 PMCID: PMC9825372 DOI: 10.1038/s42003-022-04393-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2022] [Accepted: 12/20/2022] [Indexed: 01/09/2023] Open
Abstract
Aerobic exercise is well known to promote neuroplasticity and hippocampal memory. In the developing brain, early-life exercise (ELE) can lead to persistent improvements in hippocampal function, yet molecular mechanisms underlying this phenomenon have not been fully explored. In this study, transgenic mice harboring the "NuTRAP" (Nuclear tagging and Translating Ribosome Affinity Purification) cassette in Emx1 expressing neurons ("Emx1-NuTRAP" mice) undergo ELE during adolescence. We then simultaneously isolate and sequence translating mRNA and nuclear chromatin from single hippocampal homogenates containing Emx1-expressing neurons. This approach allowed us to couple translatomic with epigenomic sequencing data to evaluate the influence of histone modifications H4K8ac and H3K27me3 on translating mRNA after ELE. A subset of ELE mice underwent a hippocampal learning task to determine the gene expression and epigenetic underpinnings of ELE's contribution to improved hippocampal memory performance. From this experiment, we discover gene expression - histone modification relationships that may play a critical role in facilitated memory after ELE. Our data reveal candidate gene-histone modification interactions and implicate gene regulatory pathways involved in ELE's impact on hippocampal memory.
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Affiliation(s)
- Anthony M Raus
- Physiology/Biophysics, Anatomy/Neurobiology, University of California- Irvine School of Medicine, Irvine, CA, USA
| | - Tyson D Fuller
- Pediatrics, University of California- Irvine School of Medicine, Irvine, CA, USA
| | - Nellie E Nelson
- Physiology/Biophysics, Anatomy/Neurobiology, University of California- Irvine School of Medicine, Irvine, CA, USA
| | - David A Valientes
- Pediatrics, University of California- Irvine School of Medicine, Irvine, CA, USA
| | - Anita Bayat
- Pediatrics, University of California- Irvine School of Medicine, Irvine, CA, USA
| | - Autumn S Ivy
- Physiology/Biophysics, Anatomy/Neurobiology, University of California- Irvine School of Medicine, Irvine, CA, USA.
- Pediatrics, University of California- Irvine School of Medicine, Irvine, CA, USA.
- Neurobiology/Behavior, University of California- Irvine School of Biological Sciences, Irvine, CA, USA.
- Anatomy/Neurobiology, University of California- Irvine School of Medicine, Irvine, CA, USA.
- Division of Neurology, Children's Hospital Orange County, Orange, CA, USA.
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8
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Anderson EM, Taniguchi M. Epigenetic Effects of Addictive Drugs in the Nucleus Accumbens. Front Mol Neurosci 2022; 15:828055. [PMID: 35813068 PMCID: PMC9260254 DOI: 10.3389/fnmol.2022.828055] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2021] [Accepted: 05/30/2022] [Indexed: 12/28/2022] Open
Abstract
Substance use induces long-lasting behavioral changes and drug craving. Increasing evidence suggests that epigenetic gene regulation contributes to the development and expression of these long-lasting behavioral alterations. Here we systematically review extensive evidence from rodent models of drug-induced changes in epigenetic regulation and epigenetic regulator proteins. We focus on histone acetylation and histone methylation in a brain region important for drug-related behaviors: the nucleus accumbens. We also discuss how experimentally altering these epigenetic regulators via systemically administered compounds or nucleus accumbens-specific manipulations demonstrate the importance of these proteins in the behavioral effects of drugs and suggest potential therapeutic value to treat people with substance use disorder. Finally, we discuss limitations and future directions for the field of epigenetic studies in the behavioral effects of addictive drugs and suggest how to use these insights to develop efficacious treatments.
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9
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Sex Differences in Psychostimulant Abuse: Implications for Estrogen Receptors and Histone Deacetylases. Genes (Basel) 2022; 13:genes13050892. [PMID: 35627277 PMCID: PMC9140379 DOI: 10.3390/genes13050892] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2022] [Revised: 05/11/2022] [Accepted: 05/13/2022] [Indexed: 02/04/2023] Open
Abstract
Substance abuse is a chronic pathological disorder that negatively affects many health and neurological processes. A growing body of literature has revealed gender differences in substance use. Compared to men, women display distinct drug-use phenotypes accompanied by recovery and rehabilitation disparities. These observations have led to the notion that sex-dependent susceptibilities exist along the progression to addiction. Within this scope, neuroadaptations following psychostimulant exposure are thought to be distinct for each sex. This review summarizes clinical findings and animal research reporting sex differences in the subjective and behavioral responses to cocaine, methamphetamine, and nicotine. This discussion is followed by an examination of epigenetic and molecular alterations implicated in the addiction process. Special consideration is given to histone deacetylases and estrogen receptor-mediated gene expression.
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10
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Ródenas-González F, Blanco-Gandía MC, Miñarro J, Rodríguez-Arias M. Effects of ketosis on cocaine-induced reinstatement in male mice. Neurosci Lett 2022; 778:136619. [PMID: 35395325 DOI: 10.1016/j.neulet.2022.136619] [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: 01/24/2022] [Revised: 03/31/2022] [Accepted: 04/03/2022] [Indexed: 10/18/2022]
Abstract
In recent years, the benefits of the ketogenic diet (KD) on different psychiatric disorders have been gaining attention, but the substance abuse field is still unexplored. Some studies have reported that palatable food can modulate the rewarding effects of cocaine, but the negative metabolic consequences rule out the recommendation of using it as a complementary treatment. Thus, the main aim of this study was to evaluate the effects of the KD on cocaine conditioned place preference (CPP) during acquisition, extinction, and reinstatement. 41 OF1 male mice were employed to assess the effects of the KD on a 10 mg/kg cocaine-induced CPP. Animals were divided into three groups: SD, KD, and KD after the Post-Conditioning test. The results revealed that, while access to the KD did not block CPP acquisition, it did significantly reduce the number of sessions required to extinguish the drug-associated memories and it blocked the priming-induced reinstatement.
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Affiliation(s)
- Francisco Ródenas-González
- Unidad de Investigación Psicobiología de las Drogodependencias, Departamento de Psicobiología, Facultad de Psicología, Universitat de Valencia, Valencia, Spain
| | - M Carmen Blanco-Gandía
- Departamento de Psicología y Sociología, Facultad de Ciencias Sociales y Humanas, Universidad de Zaragoza, Teruel, Spain
| | - José Miñarro
- Unidad de Investigación Psicobiología de las Drogodependencias, Departamento de Psicobiología, Facultad de Psicología, Universitat de Valencia, Valencia, Spain
| | - Marta Rodríguez-Arias
- Unidad de Investigación Psicobiología de las Drogodependencias, Departamento de Psicobiología, Facultad de Psicología, Universitat de Valencia, Valencia, Spain.
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11
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De Sa Nogueira D, Bourdy R, Alcala-Vida R, Filliol D, Andry V, Goumon Y, Zwiller J, Romieu P, Merienne K, Olmstead MC, Befort K. Hippocampal Cannabinoid 1 Receptors Are Modulated Following Cocaine Self-administration in Male Rats. Mol Neurobiol 2022; 59:1896-1911. [PMID: 35032317 DOI: 10.1007/s12035-022-02722-9] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2021] [Accepted: 12/30/2021] [Indexed: 02/07/2023]
Abstract
Cocaine addiction is a complex pathology inducing long-term neuroplastic changes that, in turn, contribute to maladaptive behaviors. This behavioral dysregulation is associated with transcriptional reprogramming in brain reward circuitry, although the mechanisms underlying this modulation remain poorly understood. The endogenous cannabinoid system may play a role in this process in that cannabinoid mechanisms modulate drug reward and contribute to cocaine-induced neural adaptations. In this study, we investigated whether cocaine self-administration induces long-term adaptations, including transcriptional modifications and associated epigenetic processes. We first examined endocannabinoid gene expression in reward-related brain regions of the rat following self-administered (0.33 mg/kg intravenous, FR1, 10 days) cocaine injections. Interestingly, we found increased Cnr1 expression in several structures, including prefrontal cortex, nucleus accumbens, dorsal striatum, hippocampus, habenula, amygdala, lateral hypothalamus, ventral tegmental area, and rostromedial tegmental nucleus, with most pronounced effects in the hippocampus. Endocannabinoid levels, measured by mass spectrometry, were also altered in this structure. Chromatin immunoprecipitation followed by qPCR in the hippocampus revealed that two activating histone marks, H3K4Me3 and H3K27Ac, were enriched at specific endocannabinoid genes following cocaine intake. Targeting CB1 receptors using chromosome conformation capture, we highlighted spatial chromatin re-organization in the hippocampus, as well as in the nucleus accumbens, suggesting that destabilization of the chromatin may contribute to neuronal responses to cocaine. Overall, our results highlight a key role for the hippocampus in cocaine-induced plasticity and broaden the understanding of neuronal alterations associated with endocannabinoid signaling. The latter suggests that epigenetic modifications contribute to maladaptive behaviors associated with chronic drug use.
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Affiliation(s)
- David De Sa Nogueira
- Laboratoire de Neurosciences Cognitives Et Adaptatives (LNCA), Centre de La Recherche Nationale Scientifique, Université de Strasbourg, 12 rue Goethe, 67000, Strasbourg, France.,Brain Health Institute, Rutgers University and Rutgers Biomedical and Health Sciences, 683 Hoes Lane West, Piscataway, NJ, 08854, USA
| | - Romain Bourdy
- Laboratoire de Neurosciences Cognitives Et Adaptatives (LNCA), Centre de La Recherche Nationale Scientifique, Université de Strasbourg, 12 rue Goethe, 67000, Strasbourg, France
| | - Rafael Alcala-Vida
- Laboratoire de Neurosciences Cognitives Et Adaptatives (LNCA), Centre de La Recherche Nationale Scientifique, Université de Strasbourg, 12 rue Goethe, 67000, Strasbourg, France
| | - Dominique Filliol
- Laboratoire de Neurosciences Cognitives Et Adaptatives (LNCA), Centre de La Recherche Nationale Scientifique, Université de Strasbourg, 12 rue Goethe, 67000, Strasbourg, France
| | - Virginie Andry
- Institut Des Neurosciences Cellulaires Et Intégratives (INCI), UPR 3212, CNRS, 8 Allée du Général Rouvillois, 67000, Strasbourg, France
| | - Yannick Goumon
- Institut Des Neurosciences Cellulaires Et Intégratives (INCI), UPR 3212, CNRS, 8 Allée du Général Rouvillois, 67000, Strasbourg, France
| | - Jean Zwiller
- Laboratoire de Neurosciences Cognitives Et Adaptatives (LNCA), Centre de La Recherche Nationale Scientifique, Université de Strasbourg, 12 rue Goethe, 67000, Strasbourg, France
| | - Pascal Romieu
- Laboratoire de Neurosciences Cognitives Et Adaptatives (LNCA), Centre de La Recherche Nationale Scientifique, Université de Strasbourg, 12 rue Goethe, 67000, Strasbourg, France
| | - Karine Merienne
- Laboratoire de Neurosciences Cognitives Et Adaptatives (LNCA), Centre de La Recherche Nationale Scientifique, Université de Strasbourg, 12 rue Goethe, 67000, Strasbourg, France
| | - Mary C Olmstead
- Department of Psychology, Center for Neuroscience Studies, Queen's University, Kingston, ON, K7L 3N6, Canada
| | - Katia Befort
- Laboratoire de Neurosciences Cognitives Et Adaptatives (LNCA), Centre de La Recherche Nationale Scientifique, Université de Strasbourg, 12 rue Goethe, 67000, Strasbourg, France.
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12
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Dias da Silva D, Silva JP, Carmo H, Carvalho F. Neurotoxicity of psychoactive substances: A mechanistic overview. CURRENT OPINION IN TOXICOLOGY 2021. [DOI: 10.1016/j.cotox.2021.10.002] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
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13
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Histone Deacetylases and Immediate Early Genes: Key Players in Psychostimulant-Induced Neuronal Plasticity. Neurotox Res 2021; 39:2134-2140. [PMID: 34581974 DOI: 10.1007/s12640-021-00420-3] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2021] [Revised: 07/13/2021] [Accepted: 09/17/2021] [Indexed: 11/27/2022]
Abstract
IEGs play a critical functional role of in molecular, cellular, and behavioral alterations induced by psychostimulants. IEGs appear to have specific chromatin structures that may contribute to the rapid activation of their transcription. HDAC enzymes regulate reversible acetylation of lysine residues of histones and non-histone proteins. Dysregulation of HDACs has been proposed to modulate the establishment and maintenance of aberrant transcriptional programs and behaviors associated with cognitive dysfunctions and drug addiction. In this mini-review we focus our attention on recent discoveries concerning networks of protein-protein interactions for the two classes of HDAC protein family members that are highly expressed in neurons, class I and IIa HDACs. Because dynamic histone acetylation appears to be critical to IEG expression in the brain, we discuss the role of these epigenetic regulators on IEG expression induced by cocaine and methamphetamine intake.
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14
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Chen L, Yan H, Wang Y, He Z, Leng Q, Huang S, Wu F, Feng X, Yan J. The Mechanisms and Boundary Conditions of Drug Memory Reconsolidation. Front Neurosci 2021; 15:717956. [PMID: 34421529 PMCID: PMC8377231 DOI: 10.3389/fnins.2021.717956] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2021] [Accepted: 07/20/2021] [Indexed: 11/13/2022] Open
Abstract
Drug addiction can be seen as a disorder of maladaptive learning characterized by relapse. Therefore, disrupting drug-related memories could be an approach to improving therapies for addiction. Pioneering studies over the last two decades have revealed that consolidated memories are not static, but can be reconsolidated after retrieval, thereby providing candidate pathways for the treatment of addiction. The limbic-corticostriatal system is known to play a vital role in encoding the drug memory engram. Specific structures within this system contribute differently to the process of memory reconsolidation, making it a potential target for preventing relapse. In addition, as molecular processes are also active during memory reconsolidation, amnestic agents can be used to attenuate drug memory. In this review, we focus primarily on the brain structures involved in storing the drug memory engram, as well as the molecular processes involved in drug memory reconsolidation. Notably, we describe reports regarding boundary conditions constraining the therapeutic potential of memory reconsolidation. Furthermore, we discuss the principles that could be employed to modify stored memories. Finally, we emphasize the challenge of reconsolidation-based strategies, but end with an optimistic view on the development of reconsolidation theory for drug relapse prevention.
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Affiliation(s)
- Liangpei Chen
- Department of Forensic Science, School of Basic Medical Science, Central South University, Changsha, China
| | - He Yan
- Department of Forensic Science, School of Basic Medical Science, Central South University, Changsha, China
| | - Yufang Wang
- Department of Forensic Science, School of Basic Medical Science, Central South University, Changsha, China
| | - Ziping He
- Xiangya School of Medicine, Central South University, Changsha, China
| | - Qihao Leng
- Xiangya School of Medicine, Central South University, Changsha, China
| | - Shihao Huang
- Key Laboratory of Molecular Epidemiology of Hunan Province, School of Medicine, Hunan Normal University, Changsha, China
| | - Feilong Wu
- Key Laboratory of Molecular Epidemiology of Hunan Province, School of Medicine, Hunan Normal University, Changsha, China
| | - Xiangyang Feng
- Department of Forensic Science, School of Basic Medical Science, Xinjiang Medical University, Urumqi, China
| | - Jie Yan
- Department of Forensic Science, School of Basic Medical Science, Central South University, Changsha, China.,Department of Forensic Science, School of Basic Medical Science, Xinjiang Medical University, Urumqi, China
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15
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DRD3-dependent plasticity within the VP drives subcircuit activity critical for cocaine seeking. Neuron 2021; 109:2043-2044. [PMID: 34237276 DOI: 10.1016/j.neuron.2021.06.011] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
Abstract
The ventral pallidum (VP) is a key hub within the reward system that mediates drug-seeking behaviors. However, molecular and cellular adaptations within the VP following drug use are not fully elucidated. In this issue of Neuron, Pribiag et al. (2021) demonstrate how cocaine induces circuit-specific changes within the VP via dopamine-receptor-D3-dependent processes to promote cocaine seeking.
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16
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Park HS, Kim J, Ahn SH, Ryu HY. Epigenetic Targeting of Histone Deacetylases in Diagnostics and Treatment of Depression. Int J Mol Sci 2021; 22:5398. [PMID: 34065586 PMCID: PMC8160658 DOI: 10.3390/ijms22105398] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2021] [Revised: 05/17/2021] [Accepted: 05/18/2021] [Indexed: 12/13/2022] Open
Abstract
Depression is a highly prevalent, disabling, and often chronic illness that places substantial burdens on patients, families, healthcare systems, and the economy. A substantial minority of patients are unresponsive to current therapies, so there is an urgent need to develop more broadly effective, accessible, and tolerable therapies. Pharmacological regulation of histone acetylation level has been investigated as one potential clinical strategy. Histone acetylation status is considered a potential diagnostic biomarker for depression, while inhibitors of histone deacetylases (HDACs) have garnered interest as novel therapeutics. This review describes recent advances in our knowledge of histone acetylation status in depression and the therapeutic potential of HDAC inhibitors.
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Affiliation(s)
- Hyun-Sun Park
- Department of Biochemistry, Inje University College of Medicine, Busan 47392, Korea
| | - Jongmin Kim
- Division of Biological Sciences, Sookmyung Women’s University, Seoul 04310, Korea;
- Research Institute for Women’s Health, Sookmyung Women’s University, Seoul 04310, Korea
| | - Seong Hoon Ahn
- Department of Molecular and Life Science, College of Science and Convergence Technology, Hanyang University ERICA Campus, Ansan 15588, Korea;
| | - Hong-Yeoul Ryu
- BK21 FOUR KNU Creative BioResearch Group, School of Life Sciences, College of National Sciences, Kyungpook National University, Daegu 41566, Korea
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