1
|
Delaney J, Nathani S, Tan V, Chavez C, Orr A, Paek J, Faraji M, Setlow B, Urs NM. Enhanced cognitive flexibility and phasic striatal dopamine dynamics in a mouse model of low striatal tonic dopamine. Neuropsychopharmacology 2024:10.1038/s41386-024-01868-5. [PMID: 38698264 DOI: 10.1038/s41386-024-01868-5] [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: 02/20/2024] [Revised: 04/08/2024] [Accepted: 04/12/2024] [Indexed: 05/05/2024]
Abstract
The catecholamine neuromodulators dopamine and norepinephrine are implicated in motor function, motivation, and cognition. Although roles for striatal dopamine in these aspects of behavior are well established, the specific roles for cortical catecholamines in regulating striatal dopamine dynamics and behavior are less clear. We recently showed that elevating cortical dopamine but not norepinephrine suppresses hyperactivity in dopamine transporter knockout (DAT-KO) mice, which have elevated striatal dopamine levels. In contrast, norepinephrine transporter knockout (NET-KO) mice have a phenotype distinct from DAT-KO mice, as they show elevated extracellular cortical catecholamines but reduced baseline striatal dopamine levels. Here we evaluated the consequences of altered catecholamine levels in NET-KO mice on cognitive flexibility and striatal dopamine dynamics. In a probabilistic reversal learning task, NET-KO mice showed enhanced reversal learning, which was consistent with larger phasic dopamine transients (dLight) in the dorsomedial striatum (DMS) during reward delivery and reward omission, compared to WT controls. Selective depletion of dorsal medial prefrontal cortex (mPFC) norepinephrine in WT mice did not alter performance on the reversal learning task but reduced nestlet shredding. Surprisingly, NET-KO mice did not show altered breakpoints in a progressive ratio task, suggesting intact food motivation. Collectively, these studies show novel roles of cortical catecholamines in the regulation of tonic and phasic striatal dopamine dynamics and cognitive flexibility, updating our current views on dopamine regulation and informing future therapeutic strategies to counter multiple psychiatric disorders.
Collapse
Affiliation(s)
- Jena Delaney
- Department of Pharmacology and Therapeutics, University of Florida, Gainesville, FL, 32610, USA
| | - Sanya Nathani
- Department of Pharmacology and Therapeutics, University of Florida, Gainesville, FL, 32610, USA
| | - Victor Tan
- Department of Pharmacology and Therapeutics, University of Florida, Gainesville, FL, 32610, USA
| | - Carson Chavez
- Department of Pharmacology and Therapeutics, University of Florida, Gainesville, FL, 32610, USA
| | - Alexander Orr
- Department of Pharmacology and Therapeutics, University of Florida, Gainesville, FL, 32610, USA
| | - Joon Paek
- Department of Pharmacology and Therapeutics, University of Florida, Gainesville, FL, 32610, USA
| | - Mojdeh Faraji
- Department of Psychiatry, University of Florida, Gainesville, FL, 32610, USA
| | - Barry Setlow
- Department of Psychiatry, University of Florida, Gainesville, FL, 32610, USA
| | - Nikhil M Urs
- Department of Pharmacology and Therapeutics, University of Florida, Gainesville, FL, 32610, USA.
| |
Collapse
|
2
|
Jayaprakash P, Isaev D, Yang KHS, Beiram R, Oz M, Sadek B. Apigenin Alleviates Autistic-like Stereotyped Repetitive Behaviors and Mitigates Brain Oxidative Stress in Mice. Pharmaceuticals (Basel) 2024; 17:482. [PMID: 38675442 PMCID: PMC11054933 DOI: 10.3390/ph17040482] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2024] [Revised: 04/03/2024] [Accepted: 04/06/2024] [Indexed: 04/28/2024] Open
Abstract
Studying the involvement of nicotinic acetylcholine receptors (nAChRs), specifically α7-nAChRs, in neuropsychiatric brain disorders such as autism spectrum disorder (ASD) has gained a growing interest. The flavonoid apigenin (APG) has been confirmed in its pharmacological action as a positive allosteric modulator of α7-nAChRs. However, there is no research describing the pharmacological potential of APG in ASD. The aim of this study was to evaluate the effects of the subchronic systemic treatment of APG (10-30 mg/kg) on ASD-like repetitive and compulsive-like behaviors and oxidative stress status in the hippocampus and cerebellum in BTBR mice, utilizing the reference drug aripiprazole (ARP, 1 mg/kg, i.p.). BTBR mice pretreated with APG (20 mg/kg) or ARP (1 mg/g, i.p.) displayed significant improvements in the marble-burying test (MBT), cotton-shredding test (CST), and self-grooming test (SGT) (all p < 0.05). However, a lower dose of APG (10 mg/kg, i.p.) failed to modulate behaviors in the MBT or SGT, but significantly attenuated the increased shredding behaviors in the CST of tested mice. Moreover, APG (10-30 mg/kg, i.p.) and ARP (1 mg/kg) moderated the disturbed levels of oxidative stress by mitigating the levels of catalase (CAT) and superoxide dismutase (SOD) in the hippocampus and cerebellum of treated BTBR mice. In patch clamp studies in hippocampal slices, the potency of choline (a selective agonist of α7-nAChRs) in activating fast inward currents was significantly potentiated following incubation with APG. Moreover, APG markedly potentiated the choline-induced enhancement of spontaneous inhibitory postsynaptic currents. The observed results propose the potential therapeutic use of APG in the management of ASD. However, further preclinical investigations in additional models and different rodent species are still needed to confirm the potential relevance of the therapeutic use of APG in ASD.
Collapse
Affiliation(s)
- Petrilla Jayaprakash
- Department of Pharmacology & Therapeutics, College of Medicine and Health Sciences, United Arab Emirates University, Al Ain P.O. Box 15551, United Arab Emirates (R.B.)
- Zayed Bin Sultan Center for Health Sciences, United Arab Emirates University, Al Ain P.O. Box 15551, United Arab Emirates
| | - Dmytro Isaev
- Department of Cellular Membranology, Bogomoletz Institute of Physiology, 01024 Kiev, Ukraine;
| | - Keun-Hang Susan Yang
- Department of Biological Sciences, Schmid College of Science and Technology, Chapman University, One University Drive, Orange, CA 92866, USA;
| | - Rami Beiram
- Department of Pharmacology & Therapeutics, College of Medicine and Health Sciences, United Arab Emirates University, Al Ain P.O. Box 15551, United Arab Emirates (R.B.)
- Zayed Bin Sultan Center for Health Sciences, United Arab Emirates University, Al Ain P.O. Box 15551, United Arab Emirates
| | - Murat Oz
- Department of Pharmacology and Therapeutics, College of Pharmacy, Kuwait University, Safat 13110, Kuwait
| | - Bassem Sadek
- Department of Pharmacology & Therapeutics, College of Medicine and Health Sciences, United Arab Emirates University, Al Ain P.O. Box 15551, United Arab Emirates (R.B.)
- Zayed Bin Sultan Center for Health Sciences, United Arab Emirates University, Al Ain P.O. Box 15551, United Arab Emirates
| |
Collapse
|
3
|
Deehan MA, Kothuis JM, Sapp E, Chase K, Ke Y, Seeley C, Iuliano M, Kim E, Kennington L, Miller R, Boudi A, Shing K, Li X, Pfister E, Anaclet C, Brodsky M, Kegel-Gleason K, Aronin N, DiFiglia M. Nacc1 Mutation in Mice Models Rare Neurodevelopmental Disorder with Underlying Synaptic Dysfunction. J Neurosci 2024; 44:e1610232024. [PMID: 38388424 PMCID: PMC10993038 DOI: 10.1523/jneurosci.1610-23.2024] [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: 08/24/2023] [Revised: 01/05/2024] [Accepted: 02/03/2024] [Indexed: 02/24/2024] Open
Abstract
A missense mutation in the transcription repressor Nucleus accumbens-associated 1 (NACC1) gene at c.892C>T (p.Arg298Trp) on chromosome 19 causes severe neurodevelopmental delay ( Schoch et al., 2017). To model this disorder, we engineered the first mouse model with the homologous mutation (Nacc1+/R284W ) and examined mice from E17.5 to 8 months. Both genders had delayed weight gain, epileptiform discharges and altered power spectral distribution in cortical electroencephalogram, behavioral seizures, and marked hindlimb clasping; females displayed thigmotaxis in an open field. In the cortex, NACC1 long isoform, which harbors the mutation, increased from 3 to 6 months, whereas the short isoform, which is not present in humans and lacks aaR284 in mice, rose steadily from postnatal day (P) 7. Nuclear NACC1 immunoreactivity increased in cortical pyramidal neurons and parvalbumin containing interneurons but not in nuclei of astrocytes or oligodendroglia. Glial fibrillary acidic protein staining in astrocytic processes was diminished. RNA-seq of P14 mutant mice cortex revealed over 1,000 differentially expressed genes (DEGs). Glial transcripts were downregulated and synaptic genes upregulated. Top gene ontology terms from upregulated DEGs relate to postsynapse and ion channel function, while downregulated DEGs enriched for terms relating to metabolic function, mitochondria, and ribosomes. Levels of synaptic proteins were changed, but number and length of synaptic contacts were unaltered at 3 months. Homozygosity worsened some phenotypes including postnatal survival, weight gain delay, and increase in nuclear NACC1. This mouse model simulates a rare form of autism and will be indispensable for assessing pathophysiology and targets for therapeutic intervention.
Collapse
Affiliation(s)
- Mark A Deehan
- Department of Neurology, Massachusetts General Hospital, Charlestown, Massachusetts 02129
| | - Josine M Kothuis
- Department of Neurology, Massachusetts General Hospital, Charlestown, Massachusetts 02129
| | - Ellen Sapp
- Department of Neurology, Massachusetts General Hospital, Charlestown, Massachusetts 02129
| | - Kathryn Chase
- Department of Medicine, UMass Chan Medical School, Worcester, Massachusetts 01655
| | - Yuting Ke
- Department of Neurology, Massachusetts General Hospital, Charlestown, Massachusetts 02129
- Department of Biological Engineering, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139
| | - Connor Seeley
- Department of Neurology, Massachusetts General Hospital, Charlestown, Massachusetts 02129
| | - Maria Iuliano
- Department of Neurology, Massachusetts General Hospital, Charlestown, Massachusetts 02129
| | - Emily Kim
- Department of Neurology, Massachusetts General Hospital, Charlestown, Massachusetts 02129
| | - Lori Kennington
- Department of Medicine, UMass Chan Medical School, Worcester, Massachusetts 01655
| | - Rachael Miller
- Department of Medicine, UMass Chan Medical School, Worcester, Massachusetts 01655
| | - Adel Boudi
- Department of Neurology, Massachusetts General Hospital, Charlestown, Massachusetts 02129
| | - Kai Shing
- Department of Neurology, Massachusetts General Hospital, Charlestown, Massachusetts 02129
| | - Xueyi Li
- Department of Neurology, Massachusetts General Hospital, Charlestown, Massachusetts 02129
| | - Edith Pfister
- Department of Medicine, UMass Chan Medical School, Worcester, Massachusetts 01655
- Program in Bioinformatics and Integrative Biology, UMass Chan Medical School, Worcester, Massachusetts 01655
| | - Christelle Anaclet
- Department of Neurological Surgery, University of California Davis School of Medicine, Davis, California 95817
| | - Michael Brodsky
- Department of Molecular, Cell and Cancer Biology, UMass Chan Medical School, Worcester, Massachusetts 01655
| | - Kimberly Kegel-Gleason
- Department of Neurology, Massachusetts General Hospital, Charlestown, Massachusetts 02129
| | - Neil Aronin
- Department of Medicine, UMass Chan Medical School, Worcester, Massachusetts 01655
| | - Marian DiFiglia
- Department of Neurology, Massachusetts General Hospital, Charlestown, Massachusetts 02129
| |
Collapse
|
4
|
Jantzen L, Dumontoy S, Ramadan B, Houdayer C, Haffen E, Hichami A, Khan NA, Van Waes V, Cabeza L. Dietary linoleic acid supplementation protects against obesity-induced microglial reactivity in mice. Sci Rep 2024; 14:6644. [PMID: 38503857 PMCID: PMC10951280 DOI: 10.1038/s41598-024-56959-6] [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: 01/15/2024] [Accepted: 03/13/2024] [Indexed: 03/21/2024] Open
Abstract
We investigated whether linoleic acid (LA) supplementation could modulate emotional behavior and microglia-related neuroinflammation. For that, male mice of C57BL/6J genetic background fed either a high-fat diet (HFD) or a standard diet (STD) for 12 weeks, were treated with a vehicle or LA solution for 5 weeks before being evaluated for emotional behavior using a battery of behavioral tests. The animals were subsequently sacrificed and their brains collected and processed for immunofluorescence staining, targeting microglia-specific calcium-binding proteins (IBA-1). Neuroinflammation severity was assessed in multiple hypothalamic, cortical and subcortical brain regions. We show an anxio-depressive-like effect of sustained HFD feeding that was neither alleviated nor worsened with LA supplementation. However, increased IBA-1 expression and microgliosis in the HFD group were largely attenuated by LA supplementation. These observations demonstrate that the anti-neuroinflammatory properties of LA are not restricted to hypothalamic areas but are also evident at the cortical and subcortical levels. This study discloses that neuroinflammation plays a role in the genesis of neuropsychiatric disorders in the context of obesity, and that LA supplementation is a useful dietary strategy to alleviate the impact of obesity-related neuroinflammation.
Collapse
Affiliation(s)
- Lucas Jantzen
- Université de Franche-Comté, UMR INSERM 1322 LINC, 19, Rue Ambroise Paré, 25000, Besançon Cedex, France
| | - Stéphanie Dumontoy
- Université de Franche-Comté, UMR INSERM 1322 LINC, 19, Rue Ambroise Paré, 25000, Besançon Cedex, France
| | - Bahrie Ramadan
- Université de Franche-Comté, UMR INSERM 1322 LINC, 19, Rue Ambroise Paré, 25000, Besançon Cedex, France
| | - Christophe Houdayer
- Université de Franche-Comté, UMR INSERM 1322 LINC, 19, Rue Ambroise Paré, 25000, Besançon Cedex, France
| | - Emmanuel Haffen
- Université de Franche-Comté, UMR INSERM 1322 LINC, service de psychiatrie de l'adulte, CIC-1431 INSERM, CHU de Besançon, 25030, Besançon, France
| | - Aziz Hichami
- Physiologie de la Nutrition & Toxicologie (NUTox), UMR UB/Institut Agro/INSERM U1231, Lipides, Nutrition & Cancer, LABEX-LipStick, Université de Bourgogne, Dijon, France
| | - Naim Akhtar Khan
- Physiologie de la Nutrition & Toxicologie (NUTox), UMR UB/Institut Agro/INSERM U1231, Lipides, Nutrition & Cancer, LABEX-LipStick, Université de Bourgogne, Dijon, France
| | - Vincent Van Waes
- Université de Franche-Comté, UMR INSERM 1322 LINC, 19, Rue Ambroise Paré, 25000, Besançon Cedex, France
| | - Lidia Cabeza
- Université de Franche-Comté, UMR INSERM 1322 LINC, 19, Rue Ambroise Paré, 25000, Besançon Cedex, France.
| |
Collapse
|
5
|
Kim YK, Jo D, Arjunan A, Ryu Y, Lim YH, Choi SY, Kim HK, Song J. Identification of IGF-1 Effects on White Adipose Tissue and Hippocampus in Alzheimer's Disease Mice via Transcriptomic and Cellular Analysis. Int J Mol Sci 2024; 25:2567. [PMID: 38473814 DOI: 10.3390/ijms25052567] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2024] [Revised: 02/17/2024] [Accepted: 02/19/2024] [Indexed: 03/14/2024] Open
Abstract
Alzheimer's disease (AD) stands as the most prevalent neurodegenerative disorder, characterized by a multitude of pathological manifestations, prominently marked by the aggregation of amyloid beta. Recent investigations have revealed a compelling association between excessive adiposity and glial activation, further correlating with cognitive impairments. Additionally, alterations in levels of insulin-like growth factor 1 (IGF-1) have been reported in individuals with metabolic conditions accompanied by memory dysfunction. Hence, our research endeavors to comprehensively explore the impact of IGF-1 on the hippocampus and adipose tissue in the context of Alzheimer's disease. To address this, we have conducted an in-depth analysis utilizing APP/PS2 transgenic mice, recognized as a well-established mouse model for Alzheimer's disease. Upon administering IGF-1 injections to the APP/PS2 mice, we observed notable alterations in their behavioral patterns, prompting us to undertake a comprehensive transcriptomic analysis of both the hippocampal and adipose tissues. Our data unveiled significant modifications in the functional profiles of these tissues. Specifically, in the hippocampus, we identified changes associated with synaptic activity and neuroinflammation. Concurrently, the adipose tissue displayed shifts in processes related to fat browning and cell death signaling. In addition to these findings, our analysis enabled the identification of a collection of long non-coding RNAs and circular RNAs that exhibited significant changes in expression subsequent to the administration of IGF-1 injections. Furthermore, we endeavored to predict the potential roles of these identified RNA molecules within the context of our study. In summary, our study offers valuable transcriptome data for hippocampal and adipose tissues within an Alzheimer's disease model and posits a significant role for IGF-1 within both the hippocampus and adipose tissue.
Collapse
Affiliation(s)
- Young-Kook Kim
- Department of Biochemistry, Chonnam National University Medical School, Hwasun 58128, Jeollanamdo, Republic of Korea
- Biomedical Science Graduate Program (BMSGP), Chonnam National University, Hwasun 58128, Jeollanamdo, Republic of Korea
| | - Danbi Jo
- Biomedical Science Graduate Program (BMSGP), Chonnam National University, Hwasun 58128, Jeollanamdo, Republic of Korea
- Department of Anatomy, Chonnam National University Medical School, Hwasun 58128, Jeollanamdo, Republic of Korea
| | - Archana Arjunan
- Department of Anatomy, Chonnam National University Medical School, Hwasun 58128, Jeollanamdo, Republic of Korea
| | - Yeongseo Ryu
- Department of Biochemistry, Chonnam National University Medical School, Hwasun 58128, Jeollanamdo, Republic of Korea
- Biomedical Science Graduate Program (BMSGP), Chonnam National University, Hwasun 58128, Jeollanamdo, Republic of Korea
| | - Yeong-Hwan Lim
- Department of Biochemistry, Chonnam National University Medical School, Hwasun 58128, Jeollanamdo, Republic of Korea
| | - Seo Yoon Choi
- Biomedical Science Graduate Program (BMSGP), Chonnam National University, Hwasun 58128, Jeollanamdo, Republic of Korea
- Department of Anatomy, Chonnam National University Medical School, Hwasun 58128, Jeollanamdo, Republic of Korea
| | - Hee Kyung Kim
- Department of Endocrinology and Metabolism, Department of Internal Medicine, Chonnam National University Medical School, Hwasun 58128, Jeollanamdo, Republic of Korea
| | - Juhyun Song
- Biomedical Science Graduate Program (BMSGP), Chonnam National University, Hwasun 58128, Jeollanamdo, Republic of Korea
- Department of Anatomy, Chonnam National University Medical School, Hwasun 58128, Jeollanamdo, Republic of Korea
| |
Collapse
|
6
|
Tan JW, An JJ, Deane H, Xu H, Liao GY, Xu B. Neurotrophin-3 from the dentate gyrus supports postsynaptic sites of mossy fiber-CA3 synapses and hippocampus-dependent cognitive functions. Mol Psychiatry 2024:10.1038/s41380-023-02404-5. [PMID: 38212372 DOI: 10.1038/s41380-023-02404-5] [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: 07/25/2023] [Revised: 12/20/2023] [Accepted: 12/22/2023] [Indexed: 01/13/2024]
Abstract
At the center of the hippocampal tri-synaptic loop are synapses formed between mossy fiber (MF) terminals from granule cells in the dentate gyrus (DG) and proximal dendrites of CA3 pyramidal neurons. However, the molecular mechanism regulating the development and function of these synapses is poorly understood. In this study, we showed that neurotrophin-3 (NT3) was expressed in nearly all mature granule cells but not CA3 cells. We selectively deleted the NT3-encoding Ntf3 gene in the DG during the first two postnatal weeks to generate a Ntf3 conditional knockout (Ntf3-cKO). Ntf3-cKO mice of both sexes had normal hippocampal cytoarchitecture but displayed impairments in contextual memory, spatial reference memory, and nest building. Furthermore, male Ntf3-cKO mice exhibited anxiety-like behaviors, whereas female Ntf3-cKO showed some mild depressive symptoms. As MF-CA3 synapses are essential for encoding of contextual memory, we examined synaptic transmission at these synapses using ex vivo electrophysiological recordings. We found that Ntf3-cKO mice had impaired basal synaptic transmission due to deficits in excitatory postsynaptic currents mediated by AMPA receptors but normal presynaptic function and intrinsic excitability of CA3 pyramidal neurons. Consistent with this selective postsynaptic deficit, Ntf3-cKO mice had fewer and smaller thorny excrescences on proximal apical dendrites of CA3 neurons and lower GluR1 levels in the stratum lucidum area where MF-CA3 synapses reside but normal MF terminals, compared with control mice. Thus, our study indicates that NT3 expressed in the dentate gyrus is crucial for the postsynaptic structure and function of MF-CA3 synapses and hippocampal-dependent memory.
Collapse
Affiliation(s)
- Ji-Wei Tan
- Department of Neuroscience, The Herbert Wertheim UF Scripps Institute for Biomedical Innovation & Technology, University of Florida, Jupiter, FL, 33458, USA
| | - Juan Ji An
- Department of Neuroscience, The Herbert Wertheim UF Scripps Institute for Biomedical Innovation & Technology, University of Florida, Jupiter, FL, 33458, USA
| | - Hannah Deane
- Department of Neuroscience, The Herbert Wertheim UF Scripps Institute for Biomedical Innovation & Technology, University of Florida, Jupiter, FL, 33458, USA
- Skaggs Graduate School of Chemical and Biological Sciences, The Scripps Research Institute, Jupiter, FL, 33458, USA
| | - Haifei Xu
- Department of Neuroscience, The Herbert Wertheim UF Scripps Institute for Biomedical Innovation & Technology, University of Florida, Jupiter, FL, 33458, USA
| | - Guey-Ying Liao
- Department of Neuroscience, The Herbert Wertheim UF Scripps Institute for Biomedical Innovation & Technology, University of Florida, Jupiter, FL, 33458, USA
| | - Baoji Xu
- Department of Neuroscience, The Herbert Wertheim UF Scripps Institute for Biomedical Innovation & Technology, University of Florida, Jupiter, FL, 33458, USA.
- Skaggs Graduate School of Chemical and Biological Sciences, The Scripps Research Institute, Jupiter, FL, 33458, USA.
| |
Collapse
|
7
|
d'Isa R, Gerlai R. Designing animal-friendly behavioral tests for neuroscience research: The importance of an ethological approach. Front Behav Neurosci 2023; 16:1090248. [PMID: 36703720 PMCID: PMC9871504 DOI: 10.3389/fnbeh.2022.1090248] [Citation(s) in RCA: 12] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2022] [Accepted: 12/16/2022] [Indexed: 01/12/2023] Open
Affiliation(s)
- Raffaele d'Isa
- Institute of Experimental Neurology (INSPE), Division of Neuroscience (DNS), IRCCS San Raffaele Scientific Institute, Milan, Italy
| | - Robert Gerlai
- Department of Psychology, University of Toronto Mississauga, Mississauga, ON, Canada
| |
Collapse
|
8
|
Zhang Y, DeBosch BJ. A protocol to induce systemic autophagy and increase energy metabolism in mice using PEGylated arginine deiminase. STAR Protoc 2022; 3:101489. [PMID: 35776644 PMCID: PMC9249829 DOI: 10.1016/j.xpro.2022.101489] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2022] [Revised: 05/12/2022] [Accepted: 06/01/2022] [Indexed: 12/05/2022] Open
Abstract
Obesity is a prevalent metabolic disorder worldwide. Here, we describe a comprehensive protocol using pegylated arginine deiminase (ADI-EPG 20) to apply the concept that arginine depletion induces systemic autophagy to drive whole-body energy metabolism and weight loss in mice. We detail the steps for cohort setup, mouse husbandry, and treatment and provide expected results under these conditions. For complete details on the use and execution of this protocol, please refer to Zhang et al. (2022a, 2022b). Protocol to study the role of systemic arginine depletion in obesity via ADI-PEG 20 Description of ADI-PEG 20 treatment and mouse husbandry to ensure reproducible results A reference protocol for investigating other physiological effects of ADI-PEG 20 Method for examining other diseases stemming from autophagy insufficiency
Publisher’s note: Undertaking any experimental protocol requires adherence to local institutional guidelines for laboratory safety and ethics.
Collapse
Affiliation(s)
- Yiming Zhang
- Department of Pediatrics, Washington University School of Medicine, St. Louis, MO 63110, USA.
| | - Brian J DeBosch
- Department of Pediatrics, Washington University School of Medicine, St. Louis, MO 63110, USA; Department of Cell Biology & Physiology, Washington University School of Medicine, St. Louis, MO 63110, USA.
| |
Collapse
|
9
|
Balogh M, Zhang J, Gaffney CM, Kalakuntla N, Nguyen NT, Trinh RT, Aguilar C, Pham HV, Milutinovic B, Nichols JM, Mahalingam R, Shepherd AJ. Sensory neuron dysfunction in orthotopic mouse models of colon cancer. J Neuroinflammation 2022; 19:204. [PMID: 35962398 PMCID: PMC9375288 DOI: 10.1186/s12974-022-02566-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2022] [Accepted: 08/07/2022] [Indexed: 11/10/2022] Open
Abstract
Reports of neurological sequelae related to colon cancer are largely restricted to rare instances of paraneoplastic syndromes, due to autoimmune reactions. Systemic inflammation associated with tumor development influences sensory neuron function in other disease models, though the extent to which this occurs in colorectal cancer is unknown. We induced orthotopic colorectal cancer via orthotopic injection of two colorectal cancer cell lines (MC38 and CT26) in two different mouse strains (C57BL/6 and Balb/c, respectively). Behavioral tests of pain sensitivity and activity did not detect significant alterations in sensory sensitivity or diminished well-being throughout tumor development. However, immunohistochemistry revealed widespread reductions in intraepidermal nerve fiber density in the skin of tumor-bearing mice. Though loss of nerve fiber density was not associated with increased expression of cell injury markers in dorsal root ganglia, lumbar dorsal root ganglia neurons of tumor-bearing animals showed deficits in mitochondrial function. These neurons also had reduced cytosolic calcium levels in live-cell imaging and reduced spontaneous activity in multi-electrode array analysis. Bulk RNA sequencing of DRGs from tumor-bearing mice detected activation of gene expression pathways associated with elevated cytokine and chemokine signaling, including CXCL10. This is consistent with the detection of CXCL10 (and numerous other cytokines, chemokines and growth factors) in MC38 and CT26 cell-conditioned media, and the serum of tumor-bearing mice. Our study demonstrates in a pre-clinical setting that colon cancer is associated with latent sensory neuron dysfunction and implicates cytokine/chemokine signaling in this process. These findings may have implications for determining risk factors and treatment responsiveness related to neuropathy in colorectal cancer.
Collapse
Affiliation(s)
- Mihály Balogh
- The MD Anderson Pain Research Consortium and the Laboratories of Neuroimmunology, Department of Symptom Research, Division of Internal Medicine, The University of Texas MD Anderson Cancer Center, Houston, TX, USA.,Pharmaceutical Analysis, Groningen Research Institute of Pharmacy, University of Groningen, 9700 AD, Groningen, The Netherlands
| | - Jixiang Zhang
- The MD Anderson Pain Research Consortium and the Laboratories of Neuroimmunology, Department of Symptom Research, Division of Internal Medicine, The University of Texas MD Anderson Cancer Center, Houston, TX, USA
| | - Caitlyn M Gaffney
- The MD Anderson Pain Research Consortium and the Laboratories of Neuroimmunology, Department of Symptom Research, Division of Internal Medicine, The University of Texas MD Anderson Cancer Center, Houston, TX, USA
| | - Neha Kalakuntla
- The MD Anderson Pain Research Consortium and the Laboratories of Neuroimmunology, Department of Symptom Research, Division of Internal Medicine, The University of Texas MD Anderson Cancer Center, Houston, TX, USA
| | - Nicholas T Nguyen
- The MD Anderson Pain Research Consortium and the Laboratories of Neuroimmunology, Department of Symptom Research, Division of Internal Medicine, The University of Texas MD Anderson Cancer Center, Houston, TX, USA.,Graduate School of Biomedical Sciences, UT Southwestern Medical Center, Dallas, TX, USA
| | - Ronnie T Trinh
- The MD Anderson Pain Research Consortium and the Laboratories of Neuroimmunology, Department of Symptom Research, Division of Internal Medicine, The University of Texas MD Anderson Cancer Center, Houston, TX, USA
| | - Clarissa Aguilar
- The MD Anderson Pain Research Consortium and the Laboratories of Neuroimmunology, Department of Symptom Research, Division of Internal Medicine, The University of Texas MD Anderson Cancer Center, Houston, TX, USA.,Neuroscience and Behavior Graduate Program, University of Massachusetts Amherst, Amherst, MA, USA
| | - Hoang Vu Pham
- The MD Anderson Pain Research Consortium and the Laboratories of Neuroimmunology, Department of Symptom Research, Division of Internal Medicine, The University of Texas MD Anderson Cancer Center, Houston, TX, USA
| | - Bojana Milutinovic
- The MD Anderson Pain Research Consortium and the Laboratories of Neuroimmunology, Department of Symptom Research, Division of Internal Medicine, The University of Texas MD Anderson Cancer Center, Houston, TX, USA.,Department of Neurosurgery, Division of Internal Medicine, The University of Texas MD Anderson Cancer Center, Houston, TX, USA
| | - James M Nichols
- The MD Anderson Pain Research Consortium and the Laboratories of Neuroimmunology, Department of Symptom Research, Division of Internal Medicine, The University of Texas MD Anderson Cancer Center, Houston, TX, USA
| | - Rajasekaran Mahalingam
- The MD Anderson Pain Research Consortium and the Laboratories of Neuroimmunology, Department of Symptom Research, Division of Internal Medicine, The University of Texas MD Anderson Cancer Center, Houston, TX, USA
| | - Andrew J Shepherd
- The MD Anderson Pain Research Consortium and the Laboratories of Neuroimmunology, Department of Symptom Research, Division of Internal Medicine, The University of Texas MD Anderson Cancer Center, Houston, TX, USA.
| |
Collapse
|
10
|
Sherman SB, Harberson M, Rashleigh R, Gupta N, Powers R, Talla R, Thusu A, Hill JW. Spexin modulates molecular thermogenic profile of adipose tissue and thermoregulatory behaviors in female C57BL/6 mice. Horm Behav 2022; 143:105195. [PMID: 35580373 PMCID: PMC10150790 DOI: 10.1016/j.yhbeh.2022.105195] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/11/2021] [Revised: 03/22/2022] [Accepted: 05/02/2022] [Indexed: 11/28/2022]
Abstract
Thermoregulation is the physiological process by which an animal regulates body temperature in response to its environment. It is known that galanin, a neuropeptide widely distributed throughout the central nervous system and secreted by the gut, plays a role in thermoregulatory behaviors and metabolism. We tested the ability of the novel neuropeptide spexin, which shares sequence homology to galanin, to regulate these functions in female mice. Supraphysiological levels of spexin in C57BL/6 mice did not lead to weight loss after 50 days of treatment. Behavioral analysis of long-term spexin treatment showed it decreased anxiety and increased thermoregulatory nest building, which was not observed when mice were housed at thermoneutral temperatures. Treatment also disrupted the thermogenic profile of brown and white adipose tissue, decreasing mRNA expression of Ucp1 in BAT and immunodetection of β3-adrenergic receptors in gWAT. Our results reveal novel functions for spexin as a modulator of thermoregulatory behaviors and adipose tissue metabolism.
Collapse
Affiliation(s)
- Shermel B Sherman
- Department of Physiology and Pharmacology, University of Toledo College of Medicine and Life Sciences, Toledo, OH 43614, United States; Center for Diabetes and Endocrine Research, Toledo, OH 43614, United States
| | - Mitchell Harberson
- Department of Physiology and Pharmacology, University of Toledo College of Medicine and Life Sciences, Toledo, OH 43614, United States; Center for Diabetes and Endocrine Research, Toledo, OH 43614, United States
| | - Rebecca Rashleigh
- Department of Physiology and Pharmacology, University of Toledo College of Medicine and Life Sciences, Toledo, OH 43614, United States; Center for Diabetes and Endocrine Research, Toledo, OH 43614, United States
| | - Niraj Gupta
- Department of Physiology and Pharmacology, University of Toledo College of Medicine and Life Sciences, Toledo, OH 43614, United States; Department of Bioengineering, University of Toledo, Toledo, OH 43604, United States
| | - Riley Powers
- Department of Physiology and Pharmacology, University of Toledo College of Medicine and Life Sciences, Toledo, OH 43614, United States; Department of Biological Sciences, Bowling Green State University, Bowling Green, OH 43403, United States
| | - Ramya Talla
- Department of Physiology and Pharmacology, University of Toledo College of Medicine and Life Sciences, Toledo, OH 43614, United States; Center for Diabetes and Endocrine Research, Toledo, OH 43614, United States
| | - Ashima Thusu
- Department of Physiology and Pharmacology, University of Toledo College of Medicine and Life Sciences, Toledo, OH 43614, United States; Department of Bioengineering, University of Toledo, Toledo, OH 43604, United States
| | - Jennifer W Hill
- Department of Physiology and Pharmacology, University of Toledo College of Medicine and Life Sciences, Toledo, OH 43614, United States; Center for Diabetes and Endocrine Research, Toledo, OH 43614, United States.
| |
Collapse
|