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Gao H, Sun C, Shang S, Sun B, Sun M, Hu S, Yang H, Hu Y, Feng Z, Zhou W, Liu C, Wang J, Liu H. Wireless Electrical Signals Induce Functional Neuronal Differentiation of BMSCs on 3D Graphene Framework Driven by Magnetic Field. ACS NANO 2023; 17:16204-16220. [PMID: 37531596 DOI: 10.1021/acsnano.3c05725] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 08/04/2023]
Abstract
Bone marrow mesenchymal stem cells (BMSCs) are suggested as candidates for neurodegeneration therapy by autologous stem cells to overcome the lack of neural stem cells in adults. However, the differentiation of BMSCs into functional neurons is a major challenge for neurotherapy. Herein, a methodology has been proposed to induce functional neuronal differentiation of BMSCs on a conductive three-dimensional graphene framework (GFs) combined with a rotating magnetic field. A wireless electrical signal of about 10 μA can be generated on the surface of GFs by cutting the magnetic field lines based on the well-known electromagnetic induction effect, which has been proven to be suitable for inducing neuronal differentiation of BMSCs. The enhanced expressions of the specific genes/proteins and apparent Ca2+ intracellular flow indicate that BMSCs cultured on GFs with 15 min/day rotating magnetic field stimulation for 15 days can differentiate functional neurons without any neural inducing factor. The animal experiments confirm the neural differentiation of BMSCs on GFs after transplantation in vivo, accompanied by stimulation of an external rotating magnetic field. This study overcomes the lack of autologous neural stem cells for adult neurodegeneration patients and provides a facile and safe strategy to induce the neural differentiation of BMSCs, which has potential for clinical applications of neural tissue engineering.
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Affiliation(s)
- Haoyang Gao
- Collaborative Innovation Center of Technology and Equipment for Biological Diagnosis and Therapy in Universities of Shandong, Institute for Advanced Interdisciplinary Research (iAIR), University of Jinan, Jinan 250022, People's Republic of China
| | - Chunhui Sun
- Collaborative Innovation Center of Technology and Equipment for Biological Diagnosis and Therapy in Universities of Shandong, Institute for Advanced Interdisciplinary Research (iAIR), University of Jinan, Jinan 250022, People's Republic of China
| | - Shuo Shang
- Collaborative Innovation Center of Technology and Equipment for Biological Diagnosis and Therapy in Universities of Shandong, Institute for Advanced Interdisciplinary Research (iAIR), University of Jinan, Jinan 250022, People's Republic of China
| | - Baojun Sun
- Collaborative Innovation Center of Technology and Equipment for Biological Diagnosis and Therapy in Universities of Shandong, Institute for Advanced Interdisciplinary Research (iAIR), University of Jinan, Jinan 250022, People's Republic of China
| | - Mingyuan Sun
- Collaborative Innovation Center of Technology and Equipment for Biological Diagnosis and Therapy in Universities of Shandong, Institute for Advanced Interdisciplinary Research (iAIR), University of Jinan, Jinan 250022, People's Republic of China
| | - Shuang Hu
- Collaborative Innovation Center of Technology and Equipment for Biological Diagnosis and Therapy in Universities of Shandong, Institute for Advanced Interdisciplinary Research (iAIR), University of Jinan, Jinan 250022, People's Republic of China
| | - Hongru Yang
- State Key Laboratory of Crystal Materials, Shandong University, 27 Shandanan Road, Jinan, Shandong 250100, People's Republic of China
| | - Ying Hu
- Collaborative Innovation Center of Technology and Equipment for Biological Diagnosis and Therapy in Universities of Shandong, Institute for Advanced Interdisciplinary Research (iAIR), University of Jinan, Jinan 250022, People's Republic of China
| | - Zhichao Feng
- Collaborative Innovation Center of Technology and Equipment for Biological Diagnosis and Therapy in Universities of Shandong, Institute for Advanced Interdisciplinary Research (iAIR), University of Jinan, Jinan 250022, People's Republic of China
| | - Weijia Zhou
- Collaborative Innovation Center of Technology and Equipment for Biological Diagnosis and Therapy in Universities of Shandong, Institute for Advanced Interdisciplinary Research (iAIR), University of Jinan, Jinan 250022, People's Republic of China
| | - Chao Liu
- Cryomedicine Laboratory, Qilu Hospital, Shandong University, Jinan 250012, People's Republic of China
| | - Jingang Wang
- Collaborative Innovation Center of Technology and Equipment for Biological Diagnosis and Therapy in Universities of Shandong, Institute for Advanced Interdisciplinary Research (iAIR), University of Jinan, Jinan 250022, People's Republic of China
| | - Hong Liu
- Collaborative Innovation Center of Technology and Equipment for Biological Diagnosis and Therapy in Universities of Shandong, Institute for Advanced Interdisciplinary Research (iAIR), University of Jinan, Jinan 250022, People's Republic of China
- State Key Laboratory of Crystal Materials, Shandong University, 27 Shandanan Road, Jinan, Shandong 250100, People's Republic of China
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Glastad KM, Roessler J, Gospocic J, Bonasio R, Berger SL. Long ant life span is maintained by a unique heat shock factor. Genes Dev 2023; 37:398-417. [PMID: 37257919 PMCID: PMC10270196 DOI: 10.1101/gad.350250.122] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2022] [Accepted: 05/09/2023] [Indexed: 06/02/2023]
Abstract
Eusocial insect reproductive females show strikingly longer life spans than nonreproductive female workers despite high genetic similarity. In the ant Harpegnathos saltator (Hsal), workers can transition to reproductive "gamergates," acquiring a fivefold prolonged life span by mechanisms that are poorly understood. We found that gamergates have elevated expression of heat shock response (HSR) genes in the absence of heat stress and enhanced survival with heat stress. This HSR gene elevation is driven in part by gamergate-specific up-regulation of the gene encoding a truncated form of a heat shock factor most similar to mammalian HSF2 (hsalHSF2). In workers, hsalHSF2 was bound to DNA only upon heat stress. In gamergates, hsalHSF2 bound to DNA even in the absence of heat stress and was localized to gamergate-biased HSR genes. Expression of hsalHSF2 in Drosophila melanogaster led to enhanced heat shock survival and extended life span in the absence of heat stress. Molecular characterization illuminated multiple parallels between long-lived flies and gamergates, underscoring the centrality of hsalHSF2 to extended ant life span. Hence, ant caste-specific heat stress resilience and extended longevity can be transferred to flies via hsalHSF2. These findings reinforce the critical role of proteostasis in health and aging and reveal novel mechanisms underlying facultative life span extension in ants.
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Affiliation(s)
- Karl M Glastad
- Department of Cell and Developmental Biology, Perelman School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania 19104, USA
- Epigenetics Institute, Perelman School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania 19104, USA
| | - Julian Roessler
- Department of Biology, School of Arts and Sciences, University of Pennsylvania, Philadelphia, Pennsylvania 19104, USA
| | - Janko Gospocic
- Department of Cell and Developmental Biology, Perelman School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania 19104, USA
- Epigenetics Institute, Perelman School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania 19104, USA
| | - Roberto Bonasio
- Department of Cell and Developmental Biology, Perelman School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania 19104, USA
- Epigenetics Institute, Perelman School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania 19104, USA
| | - Shelley L Berger
- Department of Cell and Developmental Biology, Perelman School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania 19104, USA;
- Epigenetics Institute, Perelman School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania 19104, USA
- Department of Biology, School of Arts and Sciences, University of Pennsylvania, Philadelphia, Pennsylvania 19104, USA
- Department of Genetics, Perelman School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania 19104, USA
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3
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Echinochrome A Inhibits Melanogenesis in B16F10 Cells by Downregulating CREB Signaling. Mar Drugs 2022; 20:md20090555. [PMID: 36135744 PMCID: PMC9502928 DOI: 10.3390/md20090555] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2022] [Revised: 08/23/2022] [Accepted: 08/27/2022] [Indexed: 11/22/2022] Open
Abstract
Excessive increase in melanin pigment in the skin can be caused by a variety of environmental factors, including UV radiation, and can result in spots, freckles, and skin cancer. Therefore, it is important to develop functional whitening cosmetic reagents that regulate melanogenesis. In this study, we investigated the effects of echinochrome A (Ech A) on melanogenesis in the B16F10 murine melanoma cell line. We triggered B16F10 cells using α-MSH under Ech A treatment to observe melanin synthesis and analyze expression changes in melanogenesis-related enzymes (tyrosinase, tyrosinase-related protein 1 (TYRP1), and tyrosinase-related protein 2 (TYRP2)) at the mRNA and protein levels. Furthermore, we measured expression changes in the microphthalmia-associated transcription factor (MITF), CREB, and pCREB proteins. Melanin synthesis in the cells stimulated by α-MSH was significantly reduced by Ech A. The expression of the tyrosinase, TYRP1, and TYRP2 mRNA and proteins was significantly decreased by Ech A, as was that of the MITF, CREB, and pCREB proteins. These results show that Ech A suppresses melanin synthesis by regulating melanogenesis-related enzymes through the CREB signaling pathway and suggest the potential of Ech A as a functional agent to prevent pigmentation and promote skin whitening.
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Mitigating sarcoplasmic reticulum stress limits disuse-induced muscle loss in hindlimb unloaded mice. NPJ Microgravity 2022; 8:24. [PMID: 35817772 PMCID: PMC9273600 DOI: 10.1038/s41526-022-00211-w] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2022] [Accepted: 06/22/2022] [Indexed: 01/31/2023] Open
Abstract
Muscle disuse in the hindlimb unloaded (HU) mice causes significant atrophy and weakness. However, the cellular and molecular mechanisms driving disuse-muscle atrophy remain elusive. We investigated the potential contribution of proteins dysregulation by sarcoplasmic reticulum (SR), a condition called SR stress, to muscle loss during HU. Male, c57BL/6j mice were assigned to ground-based controls or HU groups treated with vehicle or 4-phenylbutyrate (4-PBA), a potent inhibitor of SR stress, once a day for three weeks. We report that the 4-PBA reduced the SR stress and partly reversed the muscle atrophy and weakness in the HU mice. Transcriptome analysis revealed that several genes were switched on (n = 3688) or differentially expressed (n = 1184) due to HU. GO, and KEGG term analysis revealed alterations in pathways associated with the assembly of cilia and microtubules, extracellular matrix proteins regulation, calcium homeostasis, and immune modulation during HU. The muscle restoration with 4-PBA partly reversed these changes along with differential and unique expression of several genes. The analysis of genes among the two comparisons (HU-v vs. control and HU-t vs. HU-v.) shows 841 genes were overlapped between the two comparisons and they may be regulated by 4-PBA. Altogether, our findings suggest that the pharmacological suppression of SR stress may be an effective strategy to prevent disuse-induced muscle weakness and atrophy.
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Choi MR, Jin YB, Kim HN, Lee H, Chai YG, Lee SR, Kim DJ. Differential Gene Expression in the Hippocampi of Nonhuman Primates Chronically Exposed to Methamphetamine, Cocaine, or Heroin. Psychiatry Investig 2022; 19:538-550. [PMID: 35903056 PMCID: PMC9334808 DOI: 10.30773/pi.2022.0004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/04/2022] [Accepted: 05/11/2022] [Indexed: 11/27/2022] Open
Abstract
OBJECTIVE Methamphetamine (MA), cocaine, and heroin cause severe public health problems as well as impairments in neural plasticity and cognitive function in the hippocampus. This study aimed to identify the genes differentially expressed in the hippocampi of cynomolgus monkeys in response to these drugs. METHODS After the monkeys were chronically exposed to MA, cocaine, and heroin, we performed large-scale gene expression profiling of the hippocampus using RNA-Seq technology and functional annotation of genes differentially expressed. Some genes selected from RNA-Seq analysis data were validated with reverse transcription-quantitative polymerase chain reaction (RT-qPCR). And the expression changes of ADAM10 protein were assessed using immunohistochemistry. RESULTS The changes in genes related to axonal guidance (PTPRP and KAL1), the cell cycle (TLK2), and the regulation of potassium ions (DPP10) in the drug-treated groups compared to the control group were confirmed using RT-qPCR. Comparative analysis of all groups showed that among genes related to synaptic long-term potentiation, CREBBP and GRIN3A were downregulated in both the MA- and heroin-treated groups compared to the control group. In particular, the mRNA and protein expression levels of ADAM10 were decreased in the MA-treated group but increased in the cocaine-treated group compared to the control group. CONCLUSION These results provide insights into the genes that are upregulated and downregulated in the hippocampus by the chronic administration of MA, cocaine, or heroin and basic information for developing novel drugs for the treatment of hippocampal impairments caused by drug abuse.
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Affiliation(s)
- Mi Ran Choi
- Laboratory Animal Research Center, Ajou University School of Medicine, Suwon, Republic of Korea
| | - Yeung-Bae Jin
- Department of Laboratory Animal Medicine, College of Veterinary Medicine, Gyeongsang National University, Jinju, Republic of Korea
| | - Han-Na Kim
- National Primate Research Center, Korea Research Institute of Bioscience and Biotechnology, Cheongju, Republic of Korea
| | - Heejin Lee
- Department of Psychiatry, Seoul St. Mary's Hospital, The Catholic University of Korea College of Medicine, Seoul, Republic of Korea
| | - Young Gyu Chai
- Department of Molecular and Life Sciences, Hanyang University, Ansan, Republic of Korea
| | - Sang-Rae Lee
- Laboratory Animal Research Center, Ajou University School of Medicine, Suwon, Republic of Korea.,Department of Pharmacology, Ajou University School of Medicine, Suwon, Republic of Korea
| | - Dai-Jin Kim
- Department of Psychiatry, Seoul St. Mary's Hospital, The Catholic University of Korea College of Medicine, Seoul, Republic of Korea
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Choi MR, Cho S, Kim DJ, Choi JS, Jin YB, Kim M, Chang HJ, Jeon SH, Yang YD, Lee SR. Effects of Ethanol on Expression of Coding and Noncoding RNAs in Murine Neuroblastoma Neuro2a Cells. Int J Mol Sci 2022; 23:ijms23137294. [PMID: 35806296 PMCID: PMC9267046 DOI: 10.3390/ijms23137294] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2022] [Revised: 06/26/2022] [Accepted: 06/28/2022] [Indexed: 11/19/2022] Open
Abstract
Excessive use of alcohol can induce neurobiological and neuropathological alterations in the brain, including the hippocampus and forebrain, through changes in neurotransmitter systems, hormonal systems, and neuroimmune processes. We aimed to investigate the effects of ethanol on the expression of coding and noncoding RNAs in a brain-derived cell line exposed to ethanol. After exposing Neuro2a cells, a neuroblastoma cell line, to ethanol for 24 and 72 h, we observed cell proliferation and analyzed up- and downregulated mRNAs and long noncoding RNAs (lncRNAs) using total RNA-Seq technology. We validated the differential expression of some mRNAs and lncRNAs by RT-qPCR and analyzed the expression of Cebpd and Rnu3a through knock-down of Cebpd. Cell proliferation was significantly reduced in cells exposed to 100 mM ethanol for 72 h, with 1773 transcripts up- or downregulated by greater than three-fold in ethanol-treated cells compared to controls. Of these, 514 were identified as lncRNAs. Differentially expressed mRNAs and lncRNAs were mainly observed in cells exposed to ethanol for 72 h, in which Atm and Cnr1 decreased, but Trib3, Cebpd, and Spdef increased. On the other hand, lncRNAs Kcnq1ot1, Tug1, and Xist were changed by ethanol, and Rnu3a in particular was greatly increased by chronic ethanol treatment through inhibition of Cebpd. Our results increase the understanding of cellular and molecular mechanisms related to coding and noncoding RNAs in an in vitro model of acute and chronic exposure to ethanol.
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Affiliation(s)
- Mi Ran Choi
- Laboratory Animal Research Center, Ajou University School of Medicine, Suwon 16499, Korea;
| | - Sinyoung Cho
- Department of Pharmacy, College of Pharmacy and Institute of Pharmaceutical Sciences, CHA University, Pocheon 11160, Korea; (S.C.); (S.H.J.)
| | - Dai-Jin Kim
- Department of Psychiatry, Seoul St. Mary’s Hospital, College of Medicine, The Catholic University of Korea, Seoul 06591, Korea;
| | - Jung-Seok Choi
- Department of Psychiatry, Samsung Medical Center, Seoul 06351, Korea;
| | - Yeung-Bae Jin
- Department of Laboratory Animal Medicine, College of Veterinary Medicine, Gyeongsang National University, Jinju 52828, Korea;
| | - Miran Kim
- Department of Obstetrics and Gynecology, Ajou University School of Medicine, Suwon 16499, Korea; (M.K.); (H.J.C.)
| | - Hye Jin Chang
- Department of Obstetrics and Gynecology, Ajou University School of Medicine, Suwon 16499, Korea; (M.K.); (H.J.C.)
| | - Seong Ho Jeon
- Department of Pharmacy, College of Pharmacy and Institute of Pharmaceutical Sciences, CHA University, Pocheon 11160, Korea; (S.C.); (S.H.J.)
| | - Young Duk Yang
- Department of Pharmacy, College of Pharmacy and Institute of Pharmaceutical Sciences, CHA University, Pocheon 11160, Korea; (S.C.); (S.H.J.)
- Correspondence: (Y.D.Y.); (S.-R.L.); Tel.: +82-31-881-7170 (Y.D.Y.); +82-31-219-4499 (S.-R.L.)
| | - Sang-Rae Lee
- Laboratory Animal Research Center, Ajou University School of Medicine, Suwon 16499, Korea;
- Department of Pharmacology, Ajou University School of Medicine, Suwon 16499, Korea
- Correspondence: (Y.D.Y.); (S.-R.L.); Tel.: +82-31-881-7170 (Y.D.Y.); +82-31-219-4499 (S.-R.L.)
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Suthon S, Perkins RS, Bryja V, Miranda-Carboni GA, Krum SA. WNT5B in Physiology and Disease. Front Cell Dev Biol 2021; 9:667581. [PMID: 34017835 PMCID: PMC8129536 DOI: 10.3389/fcell.2021.667581] [Citation(s) in RCA: 19] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2021] [Accepted: 04/09/2021] [Indexed: 12/20/2022] Open
Abstract
WNT5B, a member of the WNT family of proteins that is closely related to WNT5A, is required for cell migration, cell proliferation, or cell differentiation in many cell types. WNT5B signals through the non-canonical β-catenin-independent signaling pathway and often functions as an antagonist of canonical WNT signaling. Although WNT5B has a high amino acid identity with WNT5A and is often assumed to have similar activities, WNT5B often exhibits unique expression patterns and functions. Here, we describe the distinct effects and mechanisms of WNT5B on development, bone, adipose tissue, cardiac tissue, the nervous system, the mammary gland, the lung and hematopoietic cells, compared to WNT5A. We also highlight aberrances in non-canonical WNT5B signaling contributing to diseases such as osteoarthritis, osteoporosis, obesity, type 2 diabetes mellitus, neuropathology, and chronic diseases associated with aging, as well as various cancers.
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Affiliation(s)
- Sarocha Suthon
- Department of Orthopaedic Surgery and Biomedical Engineering, University of Tennessee Health Science Center, Memphis, TN, United States
| | - Rachel S Perkins
- Department of Orthopaedic Surgery and Biomedical Engineering, University of Tennessee Health Science Center, Memphis, TN, United States
| | - Vitezslav Bryja
- Department of Experimental Biology, Faculty of Science, Masaryk University, Brno, Czechia.,Department of Cytokinetics, Institute of Biophysics, Czech Academy of Sciences, Brno, Czechia
| | - Gustavo A Miranda-Carboni
- Division of Hematology and Oncology, Department of Medicine, University of Tennessee Health Science Center, Memphis, TN, United States.,Center for Cancer Research, University of Tennessee Health Science Center, Memphis, TN, United States
| | - Susan A Krum
- Department of Orthopaedic Surgery and Biomedical Engineering, University of Tennessee Health Science Center, Memphis, TN, United States.,Center for Cancer Research, University of Tennessee Health Science Center, Memphis, TN, United States
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8
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Muranova LK, Shatov VM, Bukach OV, Gusev NB. Cardio-Vascular Heat Shock Protein (cvHsp, HspB7), an Unusual Representative of Small Heat Shock Protein Family. BIOCHEMISTRY (MOSCOW) 2021; 86:S1-S11. [PMID: 33827396 DOI: 10.1134/s0006297921140017] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
HspB7 is one of ten human small heat shock proteins. This protein is expressed only in insulin-dependent tissues (heart, skeletal muscle, and fat tissue), and expression of HspB7 is regulated by many different factors. Single nucleotide polymorphism is characteristic for the HspB7 gene and this polymorphism correlates with cardio-vascular diseases and obesity. HspB7 has an unusual N-terminal sequence, a conservative α-crystallin domain, and very short C-terminal domain lacking conservative IPV tripeptide involved in a small heat shock proteins oligomer formation. Nevertheless, in the isolated state HspB7 forms both small oligomers (probably dimers) and very large oligomers (aggregates). HspB7 is ineffective in suppression of amorphous aggregation of model proteins induced by heating or reduction of disulfide bonds, however it is very effective in prevention of aggregation of huntingtin fragments enriched with Gln residues. HspB7 can be an effective sensor of electrophilic agents. This protein interacts with the contractile and cytoskeleton proteins (filamin C, titin, and actin) and participates in protection of the contractile apparatus and cytoskeleton from different adverse conditions. HspB7 possesses tumor suppressive activity. Further investigations are required to understand molecular mechanisms of HspB7 participation in numerous biological processes.
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Affiliation(s)
- Lydia K Muranova
- Faculty of Biology, Lomonosov Moscow State University, Moscow, 119991, Russia
| | - Vladislav M Shatov
- Faculty of Biology, Lomonosov Moscow State University, Moscow, 119991, Russia
| | - Olesya V Bukach
- Faculty of Biology, Lomonosov Moscow State University, Moscow, 119991, Russia
| | - Nikolai B Gusev
- Faculty of Biology, Lomonosov Moscow State University, Moscow, 119991, Russia.
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Choi MR, Jin YB, Kim HN, Chai YG, Im CN, Lee SR, Kim DJ. Gene expression in the striatum of cynomolgus monkeys after chronic administration of cocaine and heroin. Basic Clin Pharmacol Toxicol 2021; 128:686-698. [PMID: 33404192 DOI: 10.1111/bcpt.13554] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2020] [Revised: 12/26/2020] [Accepted: 01/01/2021] [Indexed: 01/16/2023]
Abstract
Cocaine and heroin cause impairment of neural plasticity in the brain including striatum. This study aimed to identify genes differentially expressed in the striatum of cynomolgus monkeys in response to cocaine and heroin. After chronic administration of cocaine and heroin in the monkeys, we performed large-scale transcriptome profiling in the striatum using RNA-Seq technology and analysed functional annotation. We found that 547 and 1238 transcripts were more than 1.5-fold up- or down-regulated in cocaine- and heroin-treated groups, respectively, compared to the control group, and 3432 transcripts exhibited differential expression between cocaine- and heroin-treated groups. Functional annotation analysis indicated that genes associated with nervous system development (NAGLU, MOBP and TTL7) and stress granule disassembly (KIF5B and KLC1) were differentially expressed in the cocaine-treated group compared to the control group, whereas gene associated with neuron apoptotic process (ERBB3) was differentially expressed in the heroin-treated group. In addition, IPA network analysis indicated that genes (TRAF6 and TRAF3IP2) associated with inflammation were increased by the chronic administration of cocaine and heroin. These results provide insight into the correlated molecular mechanisms as well as the upregulation and down-regulation of genes in the striatum after chronic exposure to cocaine and heroin.
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Affiliation(s)
- Mi Ran Choi
- Department of Psychiatry, Seoul St. Mary's Hospital, The Catholic University of Korea College of Medicine, Seoul, Republic of Korea
| | - Yeung-Bae Jin
- Department of Laboratory Animal Medicine, College of Veterinary Medicine, Gyeongsang National University, Jinju, Republic of Korea
| | - Han-Na Kim
- National Primate Research Center (NPRC), Korea Research Institute of Bioscience and Biotechnology (KRIBB), Cheongju, Republic of Korea
| | - Young Gyu Chai
- Department of Molecular and Life Sciences, Hanyang University, Ansan, Republic of Korea
| | - Chang-Nim Im
- Department of Psychiatry, Seoul St. Mary's Hospital, The Catholic University of Korea College of Medicine, Seoul, Republic of Korea
| | - Sang-Rae Lee
- National Primate Research Center (NPRC), Korea Research Institute of Bioscience and Biotechnology (KRIBB), Cheongju, Republic of Korea.,Department of Functional Genomics, University of Science and Technology, Daejeon, Republic of Korea
| | - Dai-Jin Kim
- Department of Psychiatry, Seoul St. Mary's Hospital, The Catholic University of Korea College of Medicine, Seoul, Republic of Korea
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10
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Differential expression of microRNAs in the hippocampi of male and female rodents after chronic alcohol administration. Biol Sex Differ 2020; 11:65. [PMID: 33228793 PMCID: PMC7684718 DOI: 10.1186/s13293-020-00342-3] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/14/2020] [Accepted: 11/09/2020] [Indexed: 12/14/2022] Open
Abstract
Background Women are more vulnerable than men to the neurotoxicity and severe brain damage caused by chronic heavy alcohol use. In addition, brain damage due to chronic heavy alcohol use may be associated with sex-dependent epigenetic modifications. This study aimed to identify microRNAs (miRNAs) and their target genes that are differentially expressed in the hippocampi of male and female animal models in response to alcohol. Methods After chronic alcohol administration (3~3.5 g/kg/day) in male (control, n = 10; alcohol, n = 12) or female (control, n = 10; alcohol, n = 12) Sprague-Dawley rats for 6 weeks, we measured body weights and doublecortin (DCX; a neurogenesis marker) concentrations and analyzed up- or downregulated miRNAs using GeneChip miRNA 4.0 arrays. The differentially expressed miRNAs and their putative target genes were validated by RT-qPCR. Results Alcohol attenuated body weight gain only in the male group. On the other hand, alcohol led to increased serum AST in female rats and decreased serum total cholesterol concentrations in male rats. The expression of DCX was significantly reduced in the hippocampi of male alcohol-treated rats. Nine miRNAs were significantly up- or downregulated in male alcohol-treated rats, including upregulation of miR-125a-3p, let-7a-5p, and miR-3541, and downregulation of their target genes (Prdm5, Suv39h1, Ptprz1, Mapk9, Ing4, Wt1, Nkx3-1, Dab2ip, Rnf152, Ripk1, Lin28a, Apbb3, Nras, and Acvr1c). On the other hand, 7 miRNAs were significantly up- or downregulated in alcohol-treated female rats, including downregulation of miR-881-3p and miR-504 and upregulation of their target genes (Naa50, Clock, Cbfb, Arih1, Ube2g1, and Gng7). Conclusions These results suggest that chronic heavy alcohol use produces sex-dependent effects on neurogenesis and miRNA expression in the hippocampus and that sex differences should be considered when developing miRNA biomarkers to diagnose or treat alcoholics. Supplementary Information The online version contains supplementary material available at 10.1186/s13293-020-00342-3.
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Choi MR, Han JS, Chai YG, Jin YB, Lee SR, Kim DJ. Gene expression profiling in the hippocampus of adolescent rats after chronic alcohol administration. Basic Clin Pharmacol Toxicol 2019; 126:389-398. [PMID: 31628824 DOI: 10.1111/bcpt.13342] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2019] [Accepted: 10/15/2019] [Indexed: 11/29/2022]
Abstract
In South Korea, the average age of onset of alcohol drinking is 13.3 years and half of adolescents drink alcohol more than once a month; 8.45% of the Korean adolescent population become future high-risk alcohol drinkers. Chronic alcohol abuse causes physical and psychiatric health problems such as alcohol addiction, liver disease, stroke and cognitive impairments. This study aimed to investigate the effect of alcohol on gene expression and their function in the hippocampus of adolescent rats. After chronic alcohol administration in male (control, n = 6; alcohol, n = 6) Sprague-Dawley rats for 6 weeks, we analysed up- or down-regulated genes using RNA-sequencing technology. We found 83 genes more than 1.5-fold up- or down-regulated in the alcohol-treated group. Among them, genes (Dnai1, Cfap206 and Dnah1) associated with cilium movement were up-regulated in the alcohol-treated group. Mlf1, related to cell cycle arrest, was also up-regulated in the alcohol-treated group. On the other hand, genes (Smad3 and Plk5) involved in negative regulation of cell proliferation were down-regulated in the hippocampus by chronic alcohol administration. In addition, expression levels of genes associated with oxidative stress (Krt8 and Car3) and migration (Vim) were changed by chronic alcohol administration. These results pave a path for a better understanding of the neuromolecular mechanisms mediated by chronic alcohol exposure in the hippocampus of adolescents and negative pathology due to chronic alcohol abuse.
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Affiliation(s)
- Mi Ran Choi
- Department of Psychiatry, Seoul St. Mary's Hospital, The Catholic University of Korea College of Medicine, Seoul, Korea
| | - Jasmin Sanghyun Han
- Department of Psychiatry, Seoul St. Mary's Hospital, The Catholic University of Korea College of Medicine, Seoul, Korea
| | - Young Gyu Chai
- Department of Molecular and Life Sciences, Hanyang University, Ansan, Korea
| | - Yeung-Bae Jin
- National Primate Research Center (NPRC), Korea Research Institute of Bioscience and Biotechnology (KRIBB), Cheongju, Korea
| | - Sang-Rae Lee
- National Primate Research Center (NPRC), Korea Research Institute of Bioscience and Biotechnology (KRIBB), Cheongju, Korea
| | - Dai-Jin Kim
- Department of Psychiatry, Seoul St. Mary's Hospital, The Catholic University of Korea College of Medicine, Seoul, Korea
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12
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Choi MR, Chun JW, Kwak SM, Bang SH, Jin YB, Lee Y, Kim HN, Chang KT, Chai YG, Lee SR, Kim DJ. Effects of acute and chronic methamphetamine administration on cynomolgus monkey hippocampus structure and cellular transcriptome. Toxicol Appl Pharmacol 2018; 355:68-79. [DOI: 10.1016/j.taap.2018.05.031] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/02/2017] [Revised: 05/21/2018] [Accepted: 05/22/2018] [Indexed: 12/13/2022]
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13
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Effects of methamphetamine in the hippocampus of cynomolgus monkeys according to age. BIOCHIP JOURNAL 2017. [DOI: 10.1007/s13206-017-1403-9] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
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14
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Kim SK, Jung KH, Yoon SN, Kim YK, Chai YG. Late-Exponential Gene Expression in codY-Deficient Bacillus anthracis in a Host-Like Environment. Curr Microbiol 2016; 73:714-720. [PMID: 27515669 DOI: 10.1007/s00284-016-1120-y] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2016] [Accepted: 08/05/2016] [Indexed: 11/26/2022]
Abstract
CodY is a pleiotropic regulator commonly found in Gram-positive bacteria and regulates various biological processes during the stringent response in a nutrient-limiting environment. CodY also participates in virulence factor expression in many low G+C Gram-positive pathogens, as observed in Bacillus anthracis. However, the mechanism by which B. anthracis CodY regulates metabolism and virulence factors in response to environmental changes is unclear. Here, we attempted to identify the link between CodY and B. anthracis regulation with codY-deficient and codY-overexpressing mutants using high-throughput transcriptional analysis. Growth pattern analyses of codY mutants in both rich and minimal media showed defects in early cell proliferation, with opposite patterns in the early stationary phase: CodY overexpression prolonged bacterial growth, whereas deletion inhibited growth. RNA sequencing of codY-deficient B. anthracis showed both positive and negative changes in the gene expression of proteases and virulence factors as well as genes related to stringent response-related metabolism and biosynthetic processing. We also found that changes in codY expression could alter virulence gene expression of B. anthracis, suggesting modes of regulation in its virulence in a CodY concentration-dependent manner. Collectively, we conclude from these results that CodY can both positively and negatively regulate its regulon via direct and/or indirect approaches, and that its mode of regulation may be concentration dependent.
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Affiliation(s)
- Se Kye Kim
- Department of Molecular and Life Science, Hanyang University, 1271, Ansan, Gyeonggi-do, 15588, Republic of Korea
| | - Kyoung Hwa Jung
- Department of Molecular and Life Science, Hanyang University, 1271, Ansan, Gyeonggi-do, 15588, Republic of Korea
| | | | - Yun Ki Kim
- Samyang Chemical Co., Ltd, Seoul, Republic of Korea
| | - Young Gyu Chai
- Department of Molecular and Life Science, Hanyang University, 1271, Ansan, Gyeonggi-do, 15588, Republic of Korea.
- Department of Bionanotechnology, Hanyang University, Seoul, Republic of Korea.
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15
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Urquhart KR, Zhao Y, Baker JA, Lu Y, Yan L, Cook MN, Jones BC, Hamre KM, Lu L. A novel heat shock protein alpha 8 (Hspa8) molecular network mediating responses to stress- and ethanol-related behaviors. Neurogenetics 2016; 17:91-105. [PMID: 26780340 DOI: 10.1007/s10048-015-0470-0] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2015] [Accepted: 12/10/2015] [Indexed: 12/15/2022]
Abstract
Genetic differences mediate individual differences in susceptibility and responses to stress and ethanol, although, the specific molecular pathways that control these responses are not fully understood. Heat shock protein alpha 8 (Hspa8) is a molecular chaperone and member of the heat shock protein family that plays an integral role in the stress response and that has been implicated as an ethanol-responsive gene. Therefore, we assessed its role in mediating responses to stress and ethanol across varying genetic backgrounds. The hippocampus is an important mediator of these responses, and thus, was examined in the BXD family of mice in this study. We conducted bioinformatic analyses to dissect genetic factors modulating Hspa8 expression, identify downstream targets of Hspa8, and examined its role. Hspa8 is trans-regulated by a gene or genes on chromosome 14 and is part of a molecular network that regulates stress- and ethanol-related behaviors. To determine additional components of this network, we identified direct or indirect targets of Hspa8 and show that these genes, as predicted, participate in processes such as protein folding and organic substance metabolic processes. Two phenotypes that map to the Hspa8 locus are anxiety-related and numerous other anxiety- and/or ethanol-related behaviors significantly correlate with Hspa8 expression. To more directly assay this relationship, we examined differences in gene expression following exposure to stress or alcohol and showed treatment-related differential expression of Hspa8 and a subset of the members of its network. Our findings suggest that Hspa8 plays a vital role in genetic differences in responses to stress and ethanol and their interactions.
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Affiliation(s)
- Kyle R Urquhart
- Department of Anatomy and Neurobiology, University of Tennessee Health Science Center, Memphis, TN, 38163, USA
| | - Yinghong Zhao
- Department of Neurology, Affiliated Hospital of Nantong University, Nantong, Jiangsu, China
| | - Jessica A Baker
- Department of Anatomy and Neurobiology, University of Tennessee Health Science Center, Memphis, TN, 38163, USA
| | - Ye Lu
- The International Hospital of Zhejiang University, Hangzhou, Zhejiang, China
| | - Lei Yan
- Department of Genetics, Genomics and Informatics, University of Tennessee Health Science Center, Memphis, TN, 38163, USA
| | - Melloni N Cook
- Department of Psychology, University of Memphis, Memphis, TN, 38152, USA
| | - Byron C Jones
- Department of Genetics, Genomics and Informatics, University of Tennessee Health Science Center, Memphis, TN, 38163, USA
| | - Kristin M Hamre
- Department of Anatomy and Neurobiology, University of Tennessee Health Science Center, Memphis, TN, 38163, USA.
| | - Lu Lu
- Department of Anatomy and Neurobiology, University of Tennessee Health Science Center, Memphis, TN, 38163, USA. .,Department of Genetics, Genomics and Informatics, University of Tennessee Health Science Center, Memphis, TN, 38163, USA. .,Jiangsu Province Key Laboratory for Inflammation and Molecular Drug Target, Medical College of Nantong University, Nantong, China.
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16
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PARK SEONMI, KIM SOOA, AHN SANGGUN. HSF2 autoregulates its own transcription. Int J Mol Med 2015; 36:1173-9. [DOI: 10.3892/ijmm.2015.2309] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2015] [Accepted: 08/04/2015] [Indexed: 11/06/2022] Open
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Kang SC, Kim SK, Chai JC, Kim SH, Won KJ, Lee YS, Jung KH, Chai YG. Transcriptomic Profiling and H3K27me3 Distribution Reveal Both Demethylase-Dependent and Independent Regulation of Developmental Gene Transcription in Cell Differentiation. PLoS One 2015; 10:e0135276. [PMID: 26263556 PMCID: PMC4532468 DOI: 10.1371/journal.pone.0135276] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2015] [Accepted: 07/21/2015] [Indexed: 12/19/2022] Open
Abstract
The removal of histone H3 trimethylation at lysine residue 27 (H3K27me3) plays a critical role in the transcriptional initiation of developmental genes. The H3K27me3-specific KDM6 demethylases JMJD3 and UTX are responsible for the transcriptional initiation of various developmental genes, but some genes are expressed in a KDM6 demethylase-independent manner. To address the role of H3K27me3 in the retinoic acid (RA)-induced differentiation of the human carcinoma NCCIT cell line, we inhibited JMJD3 and UTX using the H3K27me3 demethylase inhibitor GSK-J4. The commitment of JMJD3/UTX-inhibited cells to a specific fate was delayed, and transcriptome profiling also revealed the differential expression of genes related to cell fate specification in demethylase-inactivated cells; the expression levels of RA metabolism and HOX family genes significantly decreased. We observed a weak correlation between H3K27me3 enrichment and transcriptional repression in the control and JMJD/UTX-inhibited cells, except for a few sets of developmental genes that are indispensable for cell fate specification. Taken together, these results provide the H3K27me3 landscape of a differentiating cell line and suggest that both demethylase-dependent and demethylase-independent transcriptional regulation play a role in early differentiation and developmental gene expression activated by H3K27me3 demethylation.
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Affiliation(s)
- Sung Chul Kang
- Department of Nanobiotechnology, Hanyang University, Seoul, Republic of Korea
| | - Se Kye Kim
- Department of Molecular and Life Science, Hanyang University, Ansan, Republic of Korea
| | - Jin Choul Chai
- Department of Molecular and Life Science, Hanyang University, Ansan, Republic of Korea
| | - Sun Hwa Kim
- Department of Nanobiotechnology, Hanyang University, Seoul, Republic of Korea
| | - Kyoung-Jae Won
- Institute of Diabetes, Obesity, and Metabolism, Genetics Department, Smilow Center for Translational Research, Perelman School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania 19104, United States of America
| | - Young Seek Lee
- Department of Molecular and Life Science, Hanyang University, Ansan, Republic of Korea
| | - Kyoung Hwa Jung
- Department of Molecular and Life Science, Hanyang University, Ansan, Republic of Korea
- * E-mail: (YG); (KH)
| | - Young Gyu Chai
- Department of Nanobiotechnology, Hanyang University, Seoul, Republic of Korea
- Department of Molecular and Life Science, Hanyang University, Ansan, Republic of Korea
- * E-mail: (YG); (KH)
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Mandal C, Park KS, Jung KH, Chai YG. Ethanol-related alterations in gene expression patterns in the developing murine hippocampus. Acta Biochim Biophys Sin (Shanghai) 2015; 47:581-7. [PMID: 26063602 DOI: 10.1093/abbs/gmv050] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2015] [Accepted: 04/21/2015] [Indexed: 12/17/2022] Open
Abstract
It is well known that consuming alcohol prior to and during pregnancy can cause harm to the developing fetus. Fetal alcohol spectrum disorder is a term commonly used to describe a range of disabilities that may arise from prenatal alcohol exposure such as fetal alcohol syndrome, partial fetal alcohol syndrome, alcohol-related neurodevelopmental disorders, and alcohol-related birth defects. Here, we report that maternal binge alcohol consumption alters several important genes that are involved in nervous system development in the mouse hippocampus at embryonic day 18. Microarray analysis revealed that Nova1, Ntng1, Gal, Neurog2, Neurod2, and Fezf2 gene expressions are altered in the fetal hippocampus. Pathway analysis also revealed the association of the calcium signaling pathway in addition to other pathways with the differentially expressed genes during early brain development. Alteration of such important genes and dynamics of the signaling pathways may cause neurodevelopmental disorders. Our findings offer insight into the molecular mechanism involved in neurodevelopmental disorders associated with alcohol-related defects.
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Time- and dose-dependent effects of ethanol on mouse embryonic stem cells. Reprod Toxicol 2015; 57:157-64. [PMID: 26073001 DOI: 10.1016/j.reprotox.2015.06.044] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2014] [Revised: 05/21/2015] [Accepted: 06/03/2015] [Indexed: 01/08/2023]
Abstract
Ethanol is a common solvent used with mouse embryonic stem (mES) cells in protocols to test chemicals for evidence of developmental toxicity. In this study, dose-response relationships for ethanol toxicity in mES cells were examined. For cells maintained in an undifferentiated state, ethanol significantly reduced viable cell numbers with estimated half maximal inhibitory concentrations of 1.5% and 0.8% ethanol after 24 and 48h, respectively, observations which correlated with significantly increased expression of apoptotic markers. For cells cultured to induce cardiomyocyte formation, up to 0.5% ethanol during the first two days failed to alter the outcome of differentiation, whereas 0.3% ethanol for 11 days significantly reduced the fraction of cultures containing contracting areas, an observation that correlated with significantly reduced cell numbers. These results suggest that ethanol is not an inert solvent at concentrations that might be used for developmental toxicity testing.
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Mandal C, Park JH, Lee HT, Seo H, Chung IY, Choi IG, Jung KH, Chai YG. Reduction of Nfia gene expression and subsequent target genes by binge alcohol in the fetal brain. Neurosci Lett 2015; 598:73-8. [PMID: 25982323 DOI: 10.1016/j.neulet.2015.05.016] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2015] [Revised: 05/02/2015] [Accepted: 05/11/2015] [Indexed: 12/01/2022]
Abstract
The objective of the present study was to investigate the changes in gene expression in the fetal brain (forebrain and hippocampus) caused by maternal binge alcohol consumption. Pregnant C57BL/6J mice were treated intragastrically with distilled phosphate-buffered saline (PBS) or ethanol (2.9 g/kg) from embryonic day (ED) 8-12. Microarray analysis revealed that a significant number of genes were altered at ED 18 in the developing brain. Specifically, in hippocampus, nuclear factor one alpha (Nfia) and three N-methyl-D-aspartate (Nmda) receptors (Nmdar1, Nmdar2b, and Nmdar2d) were down-regulated. The transcription factor Nfia controls gliogenesis, cell proliferation and Nmda-induced neuronal survival by regulating the expression of target genes. Some of the Nfia-target gene (Aldh1a, Folh1, Gjb6, Fgf1, Neurod1, Sept4, and Ntsr2) expressions were also altered as expected. These results suggest that the altered expression of Nfia and Nmda receptors may be associated with the etiology of fetal alcohol syndrome (FAS). The data presented in this report will contribute to the understanding of the molecular mechanisms associated with the effects of alcohol in FASD individuals.
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Affiliation(s)
- Chanchal Mandal
- Department of Molecular and Life Sciences, Hanyang University, Ansan, Republic of Korea
| | - Ji Hyun Park
- Department of Molecular and Life Sciences, Hanyang University, Ansan, Republic of Korea
| | - Hyung Tae Lee
- Department of Molecular and Life Sciences, Hanyang University, Ansan, Republic of Korea
| | - Hyemyung Seo
- Department of Molecular and Life Sciences, Hanyang University, Ansan, Republic of Korea
| | - Il Yup Chung
- Department of Molecular and Life Sciences, Hanyang University, Ansan, Republic of Korea; Department of Nanobiotechnology, Hanyang University, Seoul, Republic of Korea
| | - Ihn Geun Choi
- Department of Psychiatry, Hallym University Medical Center, Seoul, Republic of Korea
| | - Kyoung Hwa Jung
- Department of Molecular and Life Sciences, Hanyang University, Ansan, Republic of Korea; Institute of Natural Science and Technology, Hanyang University, Ansan, Republic of Korea.
| | - Young Gyu Chai
- Department of Molecular and Life Sciences, Hanyang University, Ansan, Republic of Korea; Department of Nanobiotechnology, Hanyang University, Seoul, Republic of Korea.
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21
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Mandal C, Jung KH, Kang SC, Choi MR, Park KS, Chung IY, Chai YG. Knocking down of UTX in NCCIT cells enhance cell attachment and promote early neuronal cell differentiation. BIOCHIP JOURNAL 2015. [DOI: 10.1007/s13206-015-9302-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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22
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23
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Qiu J, Shi P, Mao W, Zhao Y, Liu W, Wang Y. Effect of apoptosis in neural stem cells treated with sevoflurane. BMC Anesthesiol 2015; 15:25. [PMID: 25774088 PMCID: PMC4359390 DOI: 10.1186/s12871-015-0018-8] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2014] [Accepted: 02/24/2015] [Indexed: 12/24/2022] Open
Abstract
BACKGROUND At present, sevoflurane inhalation anesthesia used on infants is well-known. But long-time exposure to inhalation anesthetic could cause neurologic disorder, especially nerve degeneration in infant and developing brain. The central nervous system degeneration of infants could affect the memory and cognitive function. γ-Aminobutyric acid (GABA) is a known inhibitory neurotransmitter in central nervous system. Inhalation anesthetic sevoflurane may activate GABAA receptor to inhibit central nervous system, leading to apoptosis of neural degeneration, cognitive dysfunction in the critical period of brain development. METHODS Neural stem cells were derived from Wistar embryos, cultured in vitro. Third generation of neural stem cells were randomly divided into four groups according to cultured suspension: Sevoflurane group (Group S), GABAA receptor antagonists, Bicuculline group (Group B), Sevoflurane + GABAA receptor antagonists, Bicuculline group (Group S + B), dimethyl sulphoxide (DMSO) group (Group D). Group B and Group D did not receive sevoflurane preconditioning. Group S and Group S + B were pretreated with 1 minimum alveolar concentration (MAC) sevoflurane for 0 h, 3 h, 6 h, and 12 h. Group S + B and Group B were pretreated with bicuculline (10 uM). Group D was treated with DMSO (10 uL/mL). After treatments above, all groups were cultured for 48 h. Then we measured the cells viability by Cell Counting Kit (CCK-8) assay, cytotoxicity by Lactate Dehydrogenase (LDH) assay, apoptosis ratio with Annexin V/propidium iodide (PI) staining by flow cytometry, and the expression of GABAAR, anti-apoptotic protein Bcl-2, pro-apoptotic protein Bax and Caspase-3 by western blotting. RESULTS After exposing to sevoflurane for 0 h, 3 h, 6 h, and 12 h with 1MAC, we found that cell viability obviously decreased and cytotoxicity increased in time-dependent way. And Annexin V/PI staining indicated increased apoptosis ratio by flow cytometry. The protein level of GABAA receptor, pro-apoptotic protein Bax and apoptosis protein Caspase-3 increased; while anti-apoptotic protein Bcl-2 decreased. And bicuculline could reverse all detrimental results caused by sevoflurane. CONCLUSION Sevoflurane can inhibit the central nervous system by activating GABAA, resulting in apoptosis of neural stem cells, thus leading to the NSCs degeneration.
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Affiliation(s)
- Jianlei Qiu
- Department of Anesthesiology, Dezhou People’s Hospital, Dezhou, Shandong China
- School of Medicine, Shandong University, Ji’nan, Shandong China
| | - Pengcai Shi
- Department of Anesthesiology, Shandong Provincial Qianfoshan Hospital, Ji’nan, Shandong China
| | - Wude Mao
- Department of Anesthesiology, Jiaozhou Central Hospital of Qingdao, Qingdao, Shandong China
| | - Yuyi Zhao
- Department of Anesthesiology, Dezhou People’s Hospital, Dezhou, Shandong China
| | - Wenshuai Liu
- Department of Emergency, Dezhou People’s Hospital, Dezhou, Shandong China
| | - Yuelan Wang
- School of Medicine, Shandong University, Ji’nan, Shandong China
- Department of Anesthesiology, Shandong Provincial Qianfoshan Hospital, Ji’nan, Shandong China
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Transcriptomic study of mouse embryonic neural stem cell differentiation under ethanol treatment. Mol Biol Rep 2015; 42:1233-9. [PMID: 25697417 DOI: 10.1007/s11033-015-3862-1] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2014] [Accepted: 02/07/2015] [Indexed: 12/23/2022]
Abstract
Neural stem cells (NSCs) can be differentiated into one of three cell lineages: neurons, astrocytes or, oligodendrocytes. Some neurotoxins have the ability to deregulate this dynamic process. NSC cell fate can be altered by ethanol as reported previously. Our aim was to investigate the alteration of genes by ethanol during NSC differentiation and to explore the molecular mechanism underlying this phenomenon. Here, mouse fetal forebrain derived NSCs were differentiated for 2 days with or without of ethanol (50 mM). We performed a comparative microarray analysis at day two using GeneChip(®) Mouse Genome 430A 2.0 arrays. Microarray analysis showed that the expressions of 496 genes were altered by ethanol (56 and 440 were up- and down-regulated, respectively). Kyoto Encyclopedia of Genes and Genomes pathway analysis revealed the association of the following altered genes in the Wnt signaling pathway: Wnt5a, Csnk2a1, Tcf7l2, Ccnd2, Nlk, Tbl1x, Tbl1xr1, Rac2 and Nfatc3. Quantitative real time PCR analysis also demonstrated the relative expression levels of these genes. As Wnt signaling is a player of brain development, ethanol-induced alterations may contribute to improper development of the brain. Our data could be a useful resource for elucidating the mechanism behind the ethanol neurotoxicity in developing brain.
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25
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Halder D, Mandal C, Lee BH, Lee JS, Choi MR, Chai JC, Lee YS, Jung KH, Chai YG. PCDHB14- and GABRB1-like nervous system developmental genes are altered during early neuronal differentiation of NCCIT cells treated with ethanol. Hum Exp Toxicol 2015; 34:1017-27. [PMID: 25566775 DOI: 10.1177/0960327114566827] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
Ethanol (EtOH) exposure during embryonic development causes dysfunction of the central nervous system (CNS). Here, we examined the effects of chronic EtOH on gene expression during early stages of neuronal differentiation. Human embryonic carcinoma (NCCIT) cells were differentiated into neuronal precursors/lineages in the presence or absence of EtOH and folic acid. Gene expression profiling and pathway analysis demonstrated that EtOH deregulates many genes and pathways that are involved in early brain development. EtOH exposure downregulated several important genes, such as PCDHB14, GABRB1, CTNND2, NAV3, RALDH1, and OPN5, which are involved in CNS development, synapse assembly, synaptic transmission, and neurotransmitter receptor activity. GeneGo pathway analysis revealed that the deregulated genes mapped to disease pathways that were relevant to fetal alcohol spectrum disorders (FASD, such as neurotic disorders, epilepsy, and alcohol-related disorders). In conclusion, these findings suggest that the impairment of the neurological system or suboptimal synapse formation resulting from EtOH exposure could underlie the neurodevelopmental disorders in individuals with FASD.
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Affiliation(s)
- D Halder
- Department of Molecular and Life Sciences, Hanyang University, Ansan, Republic of Korea
| | - C Mandal
- Department of Molecular and Life Sciences, Hanyang University, Ansan, Republic of Korea
| | - B H Lee
- Department of Psychiatry, Gangnam Eulji Hospital, Eulji University, Seoul, Republic of Korea KARF Hospital, the Korean Alcohol Research Foundation, Goyang, Republic of Korea
| | - J S Lee
- KARF Hospital, the Korean Alcohol Research Foundation, Goyang, Republic of Korea
| | - M R Choi
- Department of Molecular and Life Sciences, Hanyang University, Ansan, Republic of Korea
| | - J C Chai
- Department of Molecular and Life Sciences, Hanyang University, Ansan, Republic of Korea
| | - Y S Lee
- Department of Molecular and Life Sciences, Hanyang University, Ansan, Republic of Korea
| | - K H Jung
- Institute of Natural Science and Technology, Hanyang University, Ansan, Republic of Korea
| | - Y G Chai
- Department of Molecular and Life Sciences, Hanyang University, Ansan, Republic of Korea Department of Nanobiotechnology, Hanyang University, Seoul, Republic of Korea
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Martin SA, McLanahan ED, Bushnell PJ, Hunter ES, El-Masri H. Species extrapolation of life-stage physiologically-based pharmacokinetic (PBPK) models to investigate the developmental toxicology of ethanol using in vitro to in vivo (IVIVE) methods. Toxicol Sci 2014; 143:512-35. [PMID: 25410581 DOI: 10.1093/toxsci/kfu246] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
To provide useful alternatives to in vivo animal studies, in vitro assays for dose-response assessments of xenobiotic chemicals must use concentrations in media and target tissues that are within biologically-plausible limits. Determining these concentrations is a complex matter, which can be facilitated by applying physiologically-based pharmacokinetic (PBPK) models in an in vitro to in vivo extrapolation (IVIVE) paradigm. We used ethanol (EtOH), a ubiquitous chemical with defined metrics for in vivo and in vitro embryotoxicity, as a model chemical to evaluate this paradigm. A published series of life-stage PBPK models for rats was extended to mice, yielding simulations that adequately predicted in vivo blood EtOH concentrations (BECs) from oral, intraperitoneal, and intravenous routes in nonpregnant and pregnant adult mice. The models were then extrapolated to nonpregnant and pregnant humans, replicating BEC data within a factor of two. The rodent models were then used to conduct IVIVEs for rodent and whole-embryo culture embryotoxicity data (neural tube closure defects, morphological changes). A second IVIVE was conducted for exposure scenarios in pregnant women during critical windows of susceptibility for developmental toxicity, such as the first 6-to-8 weeks (prerecognition period) or mid-to-late pregnancy period, when EtOH consumption is associated with fetal alcohol spectrum disorders. Incorporation of data from human embryonic stem cell studies led to a model-supported linkage of in vitro concentrations with plausible exposure ranges for pregnant women. This effort demonstrates benefits and challenges associated with use of multispecies PBPK models to estimate in vivo tissue concentrations associated with in vitro embryotoxicity studies.
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Affiliation(s)
- Sheppard A Martin
- *National Health and Environmental Effects Research Laboratory and National Center for Environmental Assessment, United States Environmental Protection Agency
| | - Eva D McLanahan
- *National Health and Environmental Effects Research Laboratory and National Center for Environmental Assessment, United States Environmental Protection Agency
| | - Philip J Bushnell
- *National Health and Environmental Effects Research Laboratory and National Center for Environmental Assessment, United States Environmental Protection Agency
| | - E Sidney Hunter
- *National Health and Environmental Effects Research Laboratory and National Center for Environmental Assessment, United States Environmental Protection Agency
| | - Hisham El-Masri
- *National Health and Environmental Effects Research Laboratory and National Center for Environmental Assessment, United States Environmental Protection Agency
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27
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Han D, Choi MR, Jung KH, Kim N, Kim SK, Chai JC, Lee YS, Chai YG. Global Transcriptome Profiling of Genes that Are Differentially Regulated During Differentiation of Mouse Embryonic Neural Stem Cells into Astrocytes. J Mol Neurosci 2014; 55:109-125. [DOI: 10.1007/s12031-014-0382-8] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2013] [Accepted: 07/09/2014] [Indexed: 12/22/2022]
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28
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Tóth ME, Vígh L, Sántha M. Alcohol stress, membranes, and chaperones. Cell Stress Chaperones 2014; 19:299-309. [PMID: 24122554 PMCID: PMC3982023 DOI: 10.1007/s12192-013-0472-5] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2013] [Revised: 09/27/2013] [Accepted: 09/30/2013] [Indexed: 12/28/2022] Open
Abstract
Ethanol, which affects all body organs, exerts a number of cytotoxic effects, most of them independent of cell type. Ethanol treatment leads to increased membrane fluidity and to changes in membrane protein composition. It can also interact directly with membrane proteins, causing conformational changes and thereby influencing their function. The cytotoxic action may include an increased level of oxidative stress. Heat shock protein molecular chaperones are ubiquitously expressed evolutionarily conserved proteins which serve as critical regulators of cellular homeostasis. Heat shock proteins can be induced by various forms of stresses such as elevated temperature, alcohol treatment, or ischemia, and they are also upregulated in certain pathological conditions. As heat shock and ethanol stress provoke similar responses, it is likely that heat shock protein activation also has a role in the protection of membranes and other cellular components during alcohol stress.
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Affiliation(s)
- Melinda E. Tóth
- Institute of Biochemistry, Biological Research Centre, Hungarian Academy of Sciences, P.O. Box 521, 6701 Szeged, Hungary
| | - László Vígh
- Institute of Biochemistry, Biological Research Centre, Hungarian Academy of Sciences, P.O. Box 521, 6701 Szeged, Hungary
| | - Miklós Sántha
- Institute of Biochemistry, Biological Research Centre, Hungarian Academy of Sciences, P.O. Box 521, 6701 Szeged, Hungary
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Notch pathway activation contributes to inhibition of C2C12 myoblast differentiation by ethanol. PLoS One 2013; 8:e71632. [PMID: 23977095 PMCID: PMC3748126 DOI: 10.1371/journal.pone.0071632] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2013] [Accepted: 06/30/2013] [Indexed: 12/14/2022] Open
Abstract
The loss of muscle mass in alcoholic myopathy may reflect alcohol inhibition of myogenic cell differentiation into myotubes. Here, using a high content imaging system we show that ethanol inhibits C2C12 myoblast differentiation by reducing myogenic fusion, creating smaller and less complex myotubes compared with controls. Ethanol administration during C2C12 differentiation reduced MyoD and myogenin expression, and microarray analysis identified ethanol activation of the Notch signaling pathway target genes Hes1 and Hey1. A reporter plasmid regulated by the Hes1 proximal promoter was activated by alcohol treatment in C2C12 cells. Treatment of differentiating C2C12 cells with a gamma secretase inhibitor (GSI) abrogated induction of Hes1. On a morphological level GSI treatment completely rescued myogenic fusion defects and partially restored other myotube parameters in response to alcohol. We conclude that alcohol inhibits C2C12 myoblast differentiation and the inhibition of myogenic fusion is mediated by Notch pathway activation.
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Halder D, Park JH, Choi MR, Chai JC, Lee YS, Mandal C, Jung KH, Chai YG. Chronic ethanol exposure increasesgoosecoid(GSC) expression in human embryonic carcinoma cell differentiation. J Appl Toxicol 2013; 34:66-75. [DOI: 10.1002/jat.2832] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2012] [Revised: 09/04/2012] [Accepted: 09/07/2012] [Indexed: 01/01/2023]
Affiliation(s)
- Debasish Halder
- Division of Molecular and Life Sciences; Hanyang University; Ansan Korea
| | - Ji Hyun Park
- Division of Molecular and Life Sciences; Hanyang University; Ansan Korea
| | - Mi Ran Choi
- Division of Molecular and Life Sciences; Hanyang University; Ansan Korea
| | - Jin Choul Chai
- Division of Molecular and Life Sciences; Hanyang University; Ansan Korea
| | - Young Seek Lee
- Division of Molecular and Life Sciences; Hanyang University; Ansan Korea
| | - Chanchal Mandal
- Division of Molecular and Life Sciences; Hanyang University; Ansan Korea
| | - Kyoung Hwa Jung
- Institute of Natural Science and Technology; Hanyang University; Ansan Korea
| | - Young Gyu Chai
- Division of Molecular and Life Sciences; Hanyang University; Ansan Korea
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Rana B, Sreenivasulu Y. Protein changes during ethanol induced seed germination in Aconitum heterophyllum. PLANT SCIENCE : AN INTERNATIONAL JOURNAL OF EXPERIMENTAL PLANT BIOLOGY 2013. [PMID: 23199684 DOI: 10.1016/j.plantsci.2012.09.013] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/10/2023]
Abstract
Aconitum heterophyllum is a high altitude medicinal plant that has become endangered due to overexploitation for their aconitins. The most effective, conventional propagation method for any plant species is by seed. However, in Aconitum seed germination is erratic, and seedling survival is low. In the present study results have been discussed on the possible implication of ethanol treatment on removal of barriers on radical emergence in terms of protein changes. Eighty seven percent of seed germination was achieved in Aconitum with ethanol treatment. Comparative 2-DE analysis of ethanol treated and untreated seed protein profiles in Phase II of germination revealed 40 differentially expressed proteins. Twenty-seven out of 40 proteins were induced, 5 were increased and 8 were repressed. Mass spectrometry and subsequent identification confirmed that these proteins were involved in metabolism, DNA regulation, stress tolerance and plasmamembrane/cell wall biosynthesis/extension processes. These protein changes might be responsible for physiological and physical changes, respectively, resulted in increase in germination percentage. Further, characterization of these proteins will be of great help in understanding the molecular mechanism lying behind enhanced germination in response to ethanol treatment.
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Affiliation(s)
- Bindu Rana
- Biotechnology Division, CSIR-Institute of Himalayan Bioresource Technology, Palampur 176061 (H.P.), India
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Lee HT, Kim SK, Choi MR, Park JH, Jung KH, Chai YG. Effects of the activated mitogen-activated protein kinase pathway via the c-ros receptor tyrosine kinase on the T47D breast cancer cell line following alcohol exposure. Oncol Rep 2012; 29:868-74. [PMID: 23292247 PMCID: PMC3597588 DOI: 10.3892/or.2012.2209] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2012] [Accepted: 11/28/2012] [Indexed: 12/13/2022] Open
Abstract
Compared to other cancers affecting women, breast cancer is significantly associated with alcohol consumption. However, the principles underlying the carcinogenesis of alcohol-induced breast cancer and the related metastatic mechanisms have yet to be established. To observe the effect of alcohol on the growth regulation in breast cancer cells, we identified differentially expressed proteins in alcohol-exposed human breast cancer T47D cells using gel-based proteomics analysis. The expression of c-ros receptor tyrosine kinase (ROS1) was increased and activated by autophosphorylation, thereby activating mitogen- and stress-activated protein kinase 1 (MSK1) through the mitogen-activated protein kinase (MAPK) pathway; activated MSK1, in turn, phosphorylated histone 3 serine 10 (H3S10p) residues in the nucleus. The increase in H3S10 phosphorylation consequently increased the level of expression of immediate-early gene such as c-fos. This study demonstrated that when breast cancer cells are exposed to alcohol, phosphorylated ROS1 activates MSK1 via ERK1/2 in the MAPK pathway, which then induces modifications to histone residues that regulate gene expression by 14-3-3 protein recruitment, leading to a lack of control of breast cancer cell proliferation.
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Affiliation(s)
- Hyung Tae Lee
- Department of Molecular and Life Science, Hanyang University, Ansan, Republic of Korea
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Lee HT, Jung KH, Baek M, Chung MK, Choi MR, Chai YG. Artificial microRNA-based aldehyde dehydrogenase gene silencing in mice. Mol Cell Toxicol 2012. [DOI: 10.1007/s13273-012-0024-6] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
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Expression profiles of miRNAs during ethanol-induced differentiation of neural stem cells. BIOCHIP JOURNAL 2012. [DOI: 10.1007/s13206-012-6110-y] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
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Kim S, Shahid S, Kim S, Park J, Lee H, Jung K, Chai Y. Comparative analysis of virulence factors secreted by Bacillus anthracis Sterne at host body temperature. Lett Appl Microbiol 2012; 54:306-12. [DOI: 10.1111/j.1472-765x.2012.03209.x] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
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Fan GC. Role of heat shock proteins in stem cell behavior. PROGRESS IN MOLECULAR BIOLOGY AND TRANSLATIONAL SCIENCE 2012; 111:305-22. [PMID: 22917237 DOI: 10.1016/b978-0-12-398459-3.00014-9] [Citation(s) in RCA: 44] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
Stress response is well appreciated to induce the expression of heat shock proteins (Hsps) in the cell. Numerous studies have demonstrated that Hsps function as molecular chaperones in the stabilization of intracellular proteins, repairing damaged proteins, and assisting in protein translocation. Various kinds of stem cells (embryonic stem cells, adult stem cells, or induced pluripotent stem cells) have to maintain their stemness and, under certain circumstances, undergo stress. Therefore, Hsps should have an important influence on stem cells. Actually, numerous studies have indicated that some Hsps physically interact with a number of transcription factors as well as intrinsic and extrinsic signaling pathways. Importantly, alterations in Hsp expression have been demonstrated to affect stem cell behavior including self-renewal, differentiation, sensitivity to environmental stress, and aging. This chapter summarizes recent findings related to (1) the roles of Hsps in maintenance of stem cell dormancy, proliferation, and differentiation; (2) the expression signature of Hsps in embryonic/adult stem cells and differentiated stem cells; (3) the protective roles of Hsps in transplanted stem cells; and (4) the possible roles of Hsps in stem cell aging.
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Affiliation(s)
- Guo-Chang Fan
- Department of Pharmacology and Cell Biophysics, University of Cincinnati College of Medicine, Cincinnati, Ohio, USA
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Park JH, Choi MR, Park KS, Kim SH, Jung KH, Chai YG. The characterization of gene expression during mouse neural stem cell differentiation in vitro. Neurosci Lett 2011; 506:50-4. [PMID: 22044874 DOI: 10.1016/j.neulet.2011.10.046] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2011] [Revised: 10/13/2011] [Accepted: 10/18/2011] [Indexed: 11/29/2022]
Abstract
Neural stem cells (NSCs) are tissue-specific, multipotent stem cells that can differentiate into three cell lineages in the central nervous system: neurons, astrocytes and oligodendrocytes. The therapeutic potential of NSCs has fueled attempts to characterize the expression of genes that regulate their fate. In this study, NSCs from embryonic day 15 (E15) mouse embryos were differentiated for 1 (DF-1) or 2 (DF-2) days, and the gene expression patterns in the NSCs and in the DF-1 and DF-2 cells were measured by microarray and real-time RT-PCR. Among the analyzed genes, 1898 genes were up-regulated in the DF-1 and DF-2 cells relative to the NSCs, whereas 1642 genes were down-regulated. The up-regulated genes included Gfap, Smad6, Fst, Tgfb2 and Cdkn2. The down-regulated genes included Ccnb1, Ccnd1 and Ccnd2. We identified gene networks that were associated with BMP and TGF-beta2 signaling pathways using Ingenuity Pathway Analysis. Our results suggest that the differentiation of E15 NSCs into astrocytes is based on a combinatorial network of various signaling pathways, including cell cycle, BMP and TGF-beta2 signaling.
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Affiliation(s)
- Ji Hyun Park
- Division of Molecular and Life Sciences, Hanyang University, Ansan, Gyeonggi-do 426-791, Republic of Korea
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