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Redina OE, Babenko VN, Smagin DA, Kovalenko IL, Galyamina AG, Kudryavtseva NN. Correlation of Expression Changes between Genes Controlling 5-HT Synthesis and Genes Crh and Trh in the Midbrain Raphe Nuclei of Chronically Aggressive and Defeated Male Mice. Genes (Basel) 2021; 12:genes12111811. [PMID: 34828419 PMCID: PMC8618546 DOI: 10.3390/genes12111811] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2021] [Revised: 11/16/2021] [Accepted: 11/16/2021] [Indexed: 11/16/2022] Open
Abstract
Midbrain raphe nuclei (MRNs) contain a large number of serotonergic neurons associated with the regulation of numerous types of psychoemotional states and physiological processes. The aim of this work was to study alterations of the MRN transcriptome in mice with prolonged positive or negative fighting experience and to identify key gene networks associated with the regulation of serotonergic system functioning. Numerous genes underwent alterations of transcription in the MRNs of male mice that either manifested aggression or experienced social defeat in daily agonistic interactions. The expression of the Tph2 gene encoding the rate-limiting enzyme of the serotonin synthesis pathway correlated with the expression of many genes, 31 of which were common between aggressive and defeated mice and were downregulated in the MRNs of mice of both experimental groups. Among these common differentially expressed genes (DEGs), there were genes associated with behavior, learning, memory, and synaptic signaling. These results suggested that, in the MRNs of the mice, the transcriptome changes associated with serotonergic regulation of various processes are similar between the two groups (aggressive and defeated). In the MRNs, more DEGs correlating with Tph2 expression were found in defeated mice than in the winners, which is probably a consequence of deeper Tph2 downregulation in the losers. It was shown for the first time that, in both groups of experimental mice, the changes in the transcription of genes controlling the synthesis and transport of serotonin directly correlate with the expression of genes Crh and Trh, which control the synthesis of corticotrophin- and thyrotropin-releasing hormones. Our findings indicate that CRH and TRH locally produced in MRNs are related to serotonergic regulation of brain processes during a chronic social conflict.
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Affiliation(s)
- Olga E. Redina
- FRC Institute of Cytology and Genetics, Siberian Branch of Russian Academy of Sciences, 630090 Novosibirsk, Russia; (V.N.B.); (D.A.S.); (I.L.K.); (A.G.G.); (N.N.K.)
- Correspondence:
| | - Vladimir N. Babenko
- FRC Institute of Cytology and Genetics, Siberian Branch of Russian Academy of Sciences, 630090 Novosibirsk, Russia; (V.N.B.); (D.A.S.); (I.L.K.); (A.G.G.); (N.N.K.)
| | - Dmitry A. Smagin
- FRC Institute of Cytology and Genetics, Siberian Branch of Russian Academy of Sciences, 630090 Novosibirsk, Russia; (V.N.B.); (D.A.S.); (I.L.K.); (A.G.G.); (N.N.K.)
| | - Irina L. Kovalenko
- FRC Institute of Cytology and Genetics, Siberian Branch of Russian Academy of Sciences, 630090 Novosibirsk, Russia; (V.N.B.); (D.A.S.); (I.L.K.); (A.G.G.); (N.N.K.)
| | - Anna G. Galyamina
- FRC Institute of Cytology and Genetics, Siberian Branch of Russian Academy of Sciences, 630090 Novosibirsk, Russia; (V.N.B.); (D.A.S.); (I.L.K.); (A.G.G.); (N.N.K.)
| | - Natalia N. Kudryavtseva
- FRC Institute of Cytology and Genetics, Siberian Branch of Russian Academy of Sciences, 630090 Novosibirsk, Russia; (V.N.B.); (D.A.S.); (I.L.K.); (A.G.G.); (N.N.K.)
- Pavlov Institute of Physiology, Russian Academy of Sciences, 199034 Saint Petersburg, Russia
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Smagin DA, Babenko VN, Redina OE, Kovalenko IL, Galyamina AG, Kudryavtseva NN. Reduced Expression of Slc Genes in the VTA and NAcc of Male Mice with Positive Fighting Experience. Genes (Basel) 2021; 12:genes12071099. [PMID: 34356115 PMCID: PMC8306410 DOI: 10.3390/genes12071099] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2021] [Revised: 06/27/2021] [Accepted: 07/16/2021] [Indexed: 12/28/2022] Open
Abstract
A range of several psychiatric medications targeting the activity of solute carrier (SLC) transporters have proved effective for treatment. Therefore, further research is needed to elucidate the expression profiles of the Slc genes, which may serve as markers of altered brain metabolic processes and neurotransmitter activities in psychoneurological disorders. We studied the Slc differentially expressed genes (DEGs) using transcriptomic profiles in the ventral tegmental area (VTA), nucleus accumbens (NAcc), and prefrontal cortex (PFC) of control and aggressive male mice with psychosis-like behavior induced by repeated experience of aggression accompanied with wins in daily agonistic interactions. The majority of the Slc DEGs were shown to have brain region-specific expression profiles. Most of these genes in the VTA and NAcc (12 of 17 and 25 of 26, respectively) were downregulated, which was not the case in the PFC (6 and 5, up- and downregulated, respectively). In the VTA and NAcc, altered expression was observed for the genes encoding the transporters of neurotransmitters as well as inorganic and organic ions, amino acids, metals, glucose, etc. This indicates an alteration in transport functions for many substrates, which can lead to the downregulation or even disruption of cellular and neurotransmitter processes in the VTA and NAcc, which are attributable to chronic stimulation of the reward systems induced by positive fighting experience. There is not a single Slc DEG common to all three brain regions. Our findings show that in male mice with repeated experience of aggression, altered activity of neurotransmitter systems leads to a restructuring of metabolic and neurotransmitter processes in a way specific for each brain region. We assume that the scoring of Slc DEGs by the largest instances of significant expression co-variation with other genes may outline a candidate for new prognostic drug targets. Thus, we propose that the Slc genes set may be treated as a sensitive genes marker scaffold in brain RNA-Seq studies.
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Affiliation(s)
- Dmitry A. Smagin
- Neuropathology Modeling Laboratory, The FRC Institute of Cytology and Genetics SB RAS, 630090 Novosibirsk, Russia; (D.A.S.); (V.N.B.); (O.E.R.); (I.L.K.); (A.G.G.)
- Neurogenetics of Social Behavior Sector, The FRC Institute of Cytology and Genetics SB RAS, 630090 Novosibirsk, Russia
| | - Vladimir N. Babenko
- Neuropathology Modeling Laboratory, The FRC Institute of Cytology and Genetics SB RAS, 630090 Novosibirsk, Russia; (D.A.S.); (V.N.B.); (O.E.R.); (I.L.K.); (A.G.G.)
| | - Olga E. Redina
- Neuropathology Modeling Laboratory, The FRC Institute of Cytology and Genetics SB RAS, 630090 Novosibirsk, Russia; (D.A.S.); (V.N.B.); (O.E.R.); (I.L.K.); (A.G.G.)
| | - Irina L. Kovalenko
- Neuropathology Modeling Laboratory, The FRC Institute of Cytology and Genetics SB RAS, 630090 Novosibirsk, Russia; (D.A.S.); (V.N.B.); (O.E.R.); (I.L.K.); (A.G.G.)
- Neurogenetics of Social Behavior Sector, The FRC Institute of Cytology and Genetics SB RAS, 630090 Novosibirsk, Russia
| | - Anna G. Galyamina
- Neuropathology Modeling Laboratory, The FRC Institute of Cytology and Genetics SB RAS, 630090 Novosibirsk, Russia; (D.A.S.); (V.N.B.); (O.E.R.); (I.L.K.); (A.G.G.)
- Neurogenetics of Social Behavior Sector, The FRC Institute of Cytology and Genetics SB RAS, 630090 Novosibirsk, Russia
| | - Natalia N. Kudryavtseva
- Neuropathology Modeling Laboratory, The FRC Institute of Cytology and Genetics SB RAS, 630090 Novosibirsk, Russia; (D.A.S.); (V.N.B.); (O.E.R.); (I.L.K.); (A.G.G.)
- Neurogenetics of Social Behavior Sector, The FRC Institute of Cytology and Genetics SB RAS, 630090 Novosibirsk, Russia
- Correspondence:
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Haghani A, Thorwald M, Morgan TE, Finch CE. The APOE gene cluster responds to air pollution factors in mice with coordinated expression of genes that differs by age in humans. Alzheimers Dement 2021; 17:175-190. [PMID: 33215813 PMCID: PMC7914175 DOI: 10.1002/alz.12230] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2020] [Revised: 10/26/2020] [Accepted: 10/26/2020] [Indexed: 12/13/2022]
Abstract
Little is known of gene-environment interactions for Alzheimer's disease (AD) risk factors. Apolipoprotein E (APOE) and neighbors on chromosome 19q13.3 have variants associated with risks of AD, but with unknown mechanism. This study describes novel links among the APOE network, air pollution, and age-related diseases. Mice exposed to air pollution nano-sized particulate matter (nPM) had coordinate responses of Apoe-Apoc1-Tomm40 in the cerebral cortex. In humans, the AD vulnerable hippocampus and amygdala had stronger age decline in APOE cluster expression than the AD-resistant cerebellum and hypothalamus. Using consensus weighted gene co-expression network, we showed that APOE has a conserved co-expressed network in rodent and primate brains. SOX1, which has AD-associated single nucleotide polymorphisms, was among the co-expressed genes in the human hippocampus. Humans and mice shared 87% of potential binding sites for transcription factors in APOE cluster promoter, suggesting similar inducibility and a novel link among environment, APOE cluster, and risk of AD.
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Affiliation(s)
- Amin Haghani
- Leonard Davis School of Gerontology, University of Southern California, Los Angeles, CA
- Department of Human Genetics, David Geffen School of Medicine, University of California, Los Angeles, Los Angeles, California, USA
| | - Max Thorwald
- Leonard Davis School of Gerontology, University of Southern California, Los Angeles, CA
| | - Todd E Morgan
- Leonard Davis School of Gerontology, University of Southern California, Los Angeles, CA
| | - Caleb E Finch
- Leonard Davis School of Gerontology, University of Southern California, Los Angeles, CA
- Dornsife College, University of Southern California, Los Angeles, CA
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Redina O, Babenko V, Smagin D, Kovalenko I, Galyamina A, Efimov V, Kudryavtseva N. Gene Expression Changes in the Ventral Tegmental Area of Male Mice with Alternative Social Behavior Experience in Chronic Agonistic Interactions. Int J Mol Sci 2020; 21:E6599. [PMID: 32917038 PMCID: PMC7555283 DOI: 10.3390/ijms21186599] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2020] [Revised: 09/03/2020] [Accepted: 09/04/2020] [Indexed: 12/17/2022] Open
Abstract
Daily agonistic interactions of mice are an effective experimental approach to elucidate the molecular mechanisms underlying the excitation of the brain neurons and the formation of alternative social behavior patterns. An RNA-Seq analysis was used to compare the ventral tegmental area (VTA) transcriptome profiles for three groups of male C57BL/6J mice: winners, a group of chronically winning mice, losers, a group of chronically defeated mice, and controls. The data obtained show that both winners and defeated mice experience stress, which however, has a more drastic effect on defeated animals causing more significant changes in the levels of gene transcription. Four genes (Nrgn, Ercc2, Otx2, and Six3) changed their VTA expression profiles in opposite directions in winners and defeated mice. It was first shown that Nrgn (neurogranin) expression was highly correlated with the expression of the genes involved in dopamine synthesis and transport (Th, Ddc, Slc6a3, and Drd2) in the VTA of defeated mice but not in winners. The obtained network of 31 coregulated genes, encoding proteins associated with nervous system development (including 24 genes associated with the generation of neurons), may be potentially useful for studying their role in the VTA dopaminergic neurons maturation under the influence of social stress.
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Affiliation(s)
- Olga Redina
- FRC Institute of Cytology and Genetics, Siberian Branch of Russian Academy of Sciences, 630090 Novosibirsk, Russia; (V.B.); (D.S.); (I.K.); (A.G.); (V.E.); (N.K.)
| | - Vladimir Babenko
- FRC Institute of Cytology and Genetics, Siberian Branch of Russian Academy of Sciences, 630090 Novosibirsk, Russia; (V.B.); (D.S.); (I.K.); (A.G.); (V.E.); (N.K.)
- Department of Natural Sciences, Novosibirsk State University, 630090 Novosibirsk, Russia
| | - Dmitry Smagin
- FRC Institute of Cytology and Genetics, Siberian Branch of Russian Academy of Sciences, 630090 Novosibirsk, Russia; (V.B.); (D.S.); (I.K.); (A.G.); (V.E.); (N.K.)
| | - Irina Kovalenko
- FRC Institute of Cytology and Genetics, Siberian Branch of Russian Academy of Sciences, 630090 Novosibirsk, Russia; (V.B.); (D.S.); (I.K.); (A.G.); (V.E.); (N.K.)
| | - Anna Galyamina
- FRC Institute of Cytology and Genetics, Siberian Branch of Russian Academy of Sciences, 630090 Novosibirsk, Russia; (V.B.); (D.S.); (I.K.); (A.G.); (V.E.); (N.K.)
| | - Vadim Efimov
- FRC Institute of Cytology and Genetics, Siberian Branch of Russian Academy of Sciences, 630090 Novosibirsk, Russia; (V.B.); (D.S.); (I.K.); (A.G.); (V.E.); (N.K.)
- Department of Natural Sciences, Novosibirsk State University, 630090 Novosibirsk, Russia
| | - Natalia Kudryavtseva
- FRC Institute of Cytology and Genetics, Siberian Branch of Russian Academy of Sciences, 630090 Novosibirsk, Russia; (V.B.); (D.S.); (I.K.); (A.G.); (V.E.); (N.K.)
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Kovalenko IL, Galyamina AG, Smagin DA, Kudryavtseva NN. Co-expression of glutamatergic and autism-related genes in the hippocampus of male mice with disturbances of social behavior. Vavilovskii Zhurnal Genet Selektsii 2020; 24:191-199. [PMID: 33659799 PMCID: PMC7716547 DOI: 10.18699/vj20.42-o] [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] [Indexed: 12/28/2022] Open
Abstract
В настоящее время существует представление о вовлеченности глутаматергической системы (ГГ)
в механизмы развития аутизма. В предыдущих исследованиях нами было показано, что негативный социальный опыт, приобретенный в ежедневных межсамцовых конфронтациях, приводит к нарушениям в социальном
поведении: снижению коммуникативности, нарушению социализации, появлению стереотипных форм поведения, которые могут рассматриваться как симптомы аутистического спектра. В связи с этим целью нашей работы было изучение с помощью транскриптомного анализа изменений экспрессии генов, кодирующих белки,
вовлеченные в функционирование глутаматергической системы, и генов, связанных с патологией аутизма (ГА),
в гиппокампе. В эксперименте использовали животных с нарушениями социального поведения, вызванными
повторным опытом социальных побед или поражений в ежедневных агонистических взаимодействиях. Для
формирования групп животных с контрастными типами поведения использовали модель сенсорного контакта
(хронического социального стресса). Полученные образцы мозга были секвенированы в ЗАО «Геноаналитика»
(http://genoanalytica.ru/, Россия, Москва). Транскриптомный анализ показал, что у агрессивных животных снижается экспрессия генов Shank3, Auts2, Ctnnd2, Nrxn2, для которых показано участие в развитии аутизма, а также глутаматергического гена Grm4. В то же время у животных с негативным социальным опытом экспрессия ГА Shank2,
Nlgn2, Ptcdh10, Reln, Arx возрастает. При этом ГГ (Grik3, Grm2, Grm4, Slc17a7, Slc1a4, Slc25a22), за исключением гена
Grin2a, повышают свою экспрессию. Корреляционный анализ выявил статистически значимую взаимосвязь
из-
мененной экспрессии ГГ и ГА. Полученные результаты, с одной стороны, могут служить подтверждением участия
ГГ в патофизиологии развития симптомов аутистического спектра, с другой – свидетельствовать о коэкспрессии
ГГ и ГА в гиппокампе, развивающейся под влиянием социальной среды. Так как большинство ГА, изменивших
экспрессию в настоящем исследовании, являются генами, связанными с клеточным скелетом и внеклеточным
матриксом, в частности участвующими в формировании синапсов, а ГГ, изменившие свою экспрессию, – генами,
кодирующими субъединицы рецепторов, то можно предположить, что вовлечение ГГ в патофизиологию аутизма происходит на уровне рецепторов.
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Affiliation(s)
- I. L. Kovalenko
- Institute of Cytology and Genetics of Siberian Branch of the Russian Academy of Sciences
| | - A. G. Galyamina
- Institute of Cytology and Genetics of Siberian Branch of the Russian Academy of Sciences
| | - D. A. Smagin
- Institute of Cytology and Genetics of Siberian Branch of the Russian Academy of Sciences
| | - N. N. Kudryavtseva
- Institute of Cytology and Genetics of Siberian Branch of the Russian Academy of Sciences
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Piórkowska K, Żukowski K, Tyra M, Szyndler-Nędza M, Szulc K, Skrzypczak E, Ropka-Molik K. The Pituitary Transcriptional Response Related to Feed Conversion in Pigs. Genes (Basel) 2019; 10:genes10090712. [PMID: 31540087 PMCID: PMC6771146 DOI: 10.3390/genes10090712] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2019] [Revised: 09/11/2019] [Accepted: 09/12/2019] [Indexed: 12/14/2022] Open
Abstract
Over the decades, pig breeding objectives have focused on improving the meat content in the carcass without taking into consideration the more effective fattening indicators that affect feed conversion. At present, pig growth traits associated particularly with animal feeding have become crucial due to their economic significance. This is especially evident in countries where pigs are maintained on large farms. The present study indicates that pituitary differentially expressed genes (DEGs) are activated in response to variable feed conversion (FC) in pigs. The experiment included two native Polish breeds: Puławska and Złotnicka White (ZW). The whole pituitary transcriptome was sequenced using next-generation sequencing (NGS) technology. The RNA-seq method identified over 500 and 300 DEGs in the pituitaries of the ZW and the Puławska pig populations, respectively, that were associated with hormonal regulation, notch signaling, and Wnt pathways. Lower FC in the ZW pigs favoured increased fat content in the body and significantly higher prolactin expression. The obtained results indicate that low FC values in pigs are related to slower growth or increased fat content, which suggests various pituitary responses. Therefore, the identified candidate genes were not directly associated with feed conversion values but with other factors. However, the present study delivers new insights into pituitary regulation in pigs.
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Affiliation(s)
- Katarzyna Piórkowska
- Department of Animal Molecular Biology, National Research Institute of Animal Production, 31-047 Cracow, Poland.
| | - Kacper Żukowski
- Department of Cattle Breeding, National Research Institute of Animal Production, 31-047 Cracow, Poland.
| | - Mirosław Tyra
- Department of Pig Breeding, National Research Institute of Animal Production, 31-047 Cracow, Poland.
| | - Magdalena Szyndler-Nędza
- Department of Pig Breeding, National Research Institute of Animal Production, 31-047 Cracow, Poland.
| | - Karolina Szulc
- Department of Animal Breeding and Product Quality Assessment, Poznań University of Life Sciences, 60-637 Poznań, Poland.
| | - Ewa Skrzypczak
- Department of Animal Breeding and Product Quality Assessment, Poznań University of Life Sciences, 60-637 Poznań, Poland.
| | - Katarzyna Ropka-Molik
- Department of Animal Molecular Biology, National Research Institute of Animal Production, 31-047 Cracow, Poland.
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Aberrant Expression of Collagen Gene Family in the Brain Regions of Male Mice with Behavioral Psychopathologies Induced by Chronic Agonistic Interactions. BIOMED RESEARCH INTERNATIONAL 2019; 2019:7276389. [PMID: 31183373 PMCID: PMC6512038 DOI: 10.1155/2019/7276389] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/13/2018] [Revised: 03/04/2019] [Accepted: 03/27/2019] [Indexed: 11/17/2022]
Abstract
Chronic agonistic interactions promote the development of experimental psychopathologies in animals: a depression-like state in chronically defeated mice and the pathology of aggressive behavior in the mice with repeated wins. The abundant research data indicate that such psychopathological states are associated with significant molecular and cellular changes in the brain. This paper aims to study the influence of a 20-day period of agonistic interactions on the expression patterns of collagen family genes encoding the proteins which are basic components of extracellular matrix (ECM) in different brain regions of mice using the RNA-Seq database. Most of differentially expressed collagen genes were shown to be upregulated in the hypothalamus and striatum of chronically aggressive and defeated mice and in the hippocampus of defeated mice, whereas downregulation of collagen genes was demonstrated in the ventral tegmental areas in both experimental groups. Aberrant expression of collagen genes induced by chronic agonistic interactions may be indicative of specific ECM defects in the brain regions of mice with alternative social experience. This is the first study demonstrating remodeling of ECM under the development of experimental disorders.
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Tomas-Roig J, Havemann-Reinecke U. Gene expression signature in brain regions exposed to long-term psychosocial stress following acute challenge with cannabinoid drugs. Psychoneuroendocrinology 2019; 102:1-8. [PMID: 30476795 DOI: 10.1016/j.psyneuen.2018.11.023] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/02/2018] [Revised: 11/15/2018] [Accepted: 11/15/2018] [Indexed: 12/13/2022]
Abstract
Repeated exposure to life stressors can overwhelm the body's capacity to restore homeostasis and result in severe negative consequences. Cannabinoid CB1 receptors are highly expressed in the Central Nervous System (CNS) and regulate both glucocorticoid signalling and neurotransmitter release. In rodents, WIN55212.2 is a full agonist at the cannabinoid receptor type-1, while Rimonabant is a potent and selective cannabinoid inverse agonist at this receptor. This study aims to investigate the effect of long-term psychosocial stress following acute challenge with cannabinoid drugs on gene expression in distinct brain regions; this is done by employing digital multiplexed gene expression analysis. We found that repeated stress increased cortical mRNA levels of dopamine receptor D2, while the expression of neuregulin-1 decreased in both the prefrontal cortex and cerebellum. Further, we found that the acute injection of the agonist WIN55212.2 reduced striatal levels of dopamine receptor D2, while the use of inverse agonist Rimonabant acted in the opposite direction. The analysis of the interaction between the drugs and repeated stress revealed that defeat mice treated with WIN55212.2 showed lower expression of a set of myelin-related genes, as did the expression of SRY-box 10 and dopamine receptors-D1 and -D2 in the prefrontal cortex when compared to vehicle. In addition, in the hippocampus of stressed mice treated with WIN55212.2, we found an elevated expression of oligodendrocyte transcription factor-1, -2 and zinc finger protein 488 when compared to vehicle. In comparison to vehicle, an increase in 2',3'-Cyclic nucleotide 3'-phosphodiesterase and oligodendrocyte transcription factor-1 occurred in the cerebellum of stressed animals treated with the agonist. Moreover, treatment with Rimonabant under the influence of stress induced an overexpression of a set of myelin-related genes in the prefrontal cortex when compared to WIN-treated animals. In conclusion, repeated stress interfered with the dopaminergic system in the prefrontal cortex. We demonstrated that the expression of dopamine receptor D2 in the striatum was mediated by the CB1 receptor. Stressed mice exposed to either WIN55212.2 or Rimonabant displayed pronounced deficits in CNS myelination. In addition, the pharmacological blockage of CB1 receptor in stressed mice deregulated the expression of dopamine receptors and might lead to dysfunctions in dopamine metabolism.
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Affiliation(s)
- J Tomas-Roig
- Dept. of Psychiatry and Psychotherapy, University of Göttingen, Germany; Center Nanoscale Microscopy and Molecular Physiology of the Brain (CNMPB), Göttingen, Germany; Girona Neuroimmunology and Multiple Sclerosis Unit (UNIEMTG), Dr. Josep Trueta University Hospital and Neurodegeneration and Neuroinflammation Research Group, Girona Biomedical Research Institute (IDIBGI), Spain.
| | - U Havemann-Reinecke
- Dept. of Psychiatry and Psychotherapy, University of Göttingen, Germany; Center Nanoscale Microscopy and Molecular Physiology of the Brain (CNMPB), Göttingen, Germany
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Griffin EF, Scopel SE, Stephen CA, Holzhauer AC, Vaji MA, Tuckey RA, Berkowitz LA, Caldwell KA, Caldwell GA. ApoE-associated modulation of neuroprotection from Aβ-mediated neurodegeneration in transgenic Caenorhabditis elegans. Dis Model Mech 2019; 12:dmm.037218. [PMID: 30683808 PMCID: PMC6398492 DOI: 10.1242/dmm.037218] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2018] [Accepted: 01/17/2019] [Indexed: 12/13/2022] Open
Abstract
Allele-specific distinctions in the human apolipoprotein E (APOE) locus represent the best-characterized genetic predictor of Alzheimer's disease (AD) risk. Expression of isoform APOEε2 is associated with reduced risk, while APOEε3 is neutral and APOEε4 carriers exhibit increased susceptibility. Using Caenorhabditis elegans, we generated a novel suite of humanized transgenic nematodes to facilitate neuronal modeling of amyloid-beta peptide (Aβ) co-expression in the context of distinct human APOE alleles. We found that co-expression of human APOEε2 with Aβ attenuated Aβ-induced neurodegeneration, whereas expression of the APOEε4 allele had no effect on neurodegeneration, indicating a loss of neuroprotective capacity. Notably, the APOEε3 allele displayed an intermediate phenotype; it was not neuroprotective in young adults but attenuated neurodegeneration in older animals. There was no functional impact from the three APOE isoforms in the absence of Aβ co-expression. Pharmacological treatment that examined neuroprotective effects of APOE alleles on calcium homeostasis showed allele-specific responses to changes in ER-associated calcium dynamics in the Aβ background. Additionally, Aβ suppressed survival, an effect that was rescued by APOEε2 and APOEε3, but not APOEε4. Expression of the APOE alleles in neurons, independent of Aβ, exerted no impact on survival. Taken together, these results illustrate that C. elegans provides a powerful in vivo platform with which to explore how AD-associated neuronal pathways are modulated by distinct APOE gene products in the context of Aβ-associated neurotoxicity. The significance of both ApoE and Aβ to AD highlights the utility of this new pre-clinical model as a means to dissect their functional inter-relationship.This article has an associated First Person interview with the first author of the paper.
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Affiliation(s)
- Edward F Griffin
- Department of Biological Sciences, The University of Alabama, Box 870344, Tuscaloosa, AL 35487-0344, USA
| | - Samuel E Scopel
- Department of Biological Sciences, The University of Alabama, Box 870344, Tuscaloosa, AL 35487-0344, USA
| | - Cayman A Stephen
- Department of Biological Sciences, The University of Alabama, Box 870344, Tuscaloosa, AL 35487-0344, USA
| | - Adam C Holzhauer
- Department of Biological Sciences, The University of Alabama, Box 870344, Tuscaloosa, AL 35487-0344, USA
| | - Madeline A Vaji
- Department of Biological Sciences, The University of Alabama, Box 870344, Tuscaloosa, AL 35487-0344, USA
| | - Ryan A Tuckey
- Department of Biological Sciences, The University of Alabama, Box 870344, Tuscaloosa, AL 35487-0344, USA
| | - Laura A Berkowitz
- Department of Biological Sciences, The University of Alabama, Box 870344, Tuscaloosa, AL 35487-0344, USA
| | - Kim A Caldwell
- Department of Biological Sciences, The University of Alabama, Box 870344, Tuscaloosa, AL 35487-0344, USA.,Departments of Neurology and Neurobiology, Center for Neurodegeneration and Experimental Therapeutics, Nathan Shock Center for Research on the Basic Biology of Aging, University of Alabama at Birmingham School of Medicine, Birmingham, AL 35294, USA
| | - Guy A Caldwell
- Department of Biological Sciences, The University of Alabama, Box 870344, Tuscaloosa, AL 35487-0344, USA .,Departments of Neurology and Neurobiology, Center for Neurodegeneration and Experimental Therapeutics, Nathan Shock Center for Research on the Basic Biology of Aging, University of Alabama at Birmingham School of Medicine, Birmingham, AL 35294, USA
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10
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Babenko VN, Smagin DA, Galyamina AG, Kovalenko IL, Kudryavtseva NN. Altered Slc25 family gene expression as markers of mitochondrial dysfunction in brain regions under experimental mixed anxiety/depression-like disorder. BMC Neurosci 2018; 19:79. [PMID: 30537945 PMCID: PMC6288882 DOI: 10.1186/s12868-018-0480-6] [Citation(s) in RCA: 31] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2018] [Accepted: 12/04/2018] [Indexed: 12/27/2022] Open
Abstract
BACKGROUND Development of anxiety- and depression-like states under chronic social defeat stress in mice has been shown by many experimental studies. In this article, the differentially expressed Slc25* family genes encoding mitochondrial carrier proteins were analyzed in the brain of depressive (defeated) mice versus aggressive mice winning in everyday social confrontations. The collected samples of brain regions were sequenced at JSC Genoanalytica ( http://genoanalytica.ru/ , Moscow, Russia). RESULTS Changes in the expression of the 20 Slc25* genes in the male mice were brain region- and social experience (positive or negative)-specific. In particular, most Slc25* genes were up-regulated in the hypothalamus of defeated and aggressive mice and in the hippocampus of defeated mice. In the striatum of defeated mice and in the ventral tegmental area of aggressive mice expression of mitochondrial transporter genes changed specifically. Significant correlations between expression of most Slc25* genes and mitochondrial Mrps and Mrpl genes were found in the brain regions. CONCLUSION Altered expression of the Slc25* genes may serve as a marker of mitochondrial dysfunction in brain, which accompanies the development of many neurological and psychoemotional disorders.
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Affiliation(s)
- Vladimir N Babenko
- Laboratory of Neuropathology Modeling, The Federal Research Center Institute of Cytology and Genetics SB RAS, Novosibirsk, Russia. .,Neurogenetics of Social Behavior Sector, The Federal Research Center Institute of Cytology and Genetics SB RAS, Novosibirsk, Russia. .,Laboratory of Human Molecular Genetics, The Federal Research Center Institute of Cytology and Genetics SB RAS, Novosibirsk, Russia.
| | - Dmitry A Smagin
- Laboratory of Neuropathology Modeling, The Federal Research Center Institute of Cytology and Genetics SB RAS, Novosibirsk, Russia.,Neurogenetics of Social Behavior Sector, The Federal Research Center Institute of Cytology and Genetics SB RAS, Novosibirsk, Russia
| | - Anna G Galyamina
- Laboratory of Neuropathology Modeling, The Federal Research Center Institute of Cytology and Genetics SB RAS, Novosibirsk, Russia.,Neurogenetics of Social Behavior Sector, The Federal Research Center Institute of Cytology and Genetics SB RAS, Novosibirsk, Russia
| | - Irina L Kovalenko
- Laboratory of Neuropathology Modeling, The Federal Research Center Institute of Cytology and Genetics SB RAS, Novosibirsk, Russia.,Neurogenetics of Social Behavior Sector, The Federal Research Center Institute of Cytology and Genetics SB RAS, Novosibirsk, Russia
| | - Natalia N Kudryavtseva
- Laboratory of Neuropathology Modeling, The Federal Research Center Institute of Cytology and Genetics SB RAS, Novosibirsk, Russia. .,Neurogenetics of Social Behavior Sector, The Federal Research Center Institute of Cytology and Genetics SB RAS, Novosibirsk, Russia.
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11
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Chen M, Harrison A, Shanahan H, Orlov Y. Biological Big Bytes: Integrative Analysis of Large Biological Datasets. J Integr Bioinform 2017; 14:/j/jib.2017.14.issue-3/jib-2017-0052/jib-2017-0052.xml. [PMID: 28902625 PMCID: PMC6042814 DOI: 10.1515/jib-2017-0052] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022] Open
Affiliation(s)
- Ming Chen
- Department of Bioinformatics, College of Life Sciences, Zhejiang University, Hangzhou, P.R. China
| | - Andrew Harrison
- Department of Mathematical Sciences, University of Essex, Essex, England, UK
| | - Hugh Shanahan
- Department of Computer Science, Royal Holloway, University of London, Egham, England, UK
| | - Yuriy Orlov
- Institute of Cytology and Genetics SB RAS, Novosibirsk, Russia
- Novosibirsk State University, Novosibirsk, Russia
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