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Stachowiak M, Nowacka-Woszuk J, Szabelska-Beresewicz A, Zyprych-Walczak J, Krzeminska P, Sosinski O, Nowak T, Switonski M. A massive alteration of gene expression in undescended testicles of dogs and the association of KAT6A variants with cryptorchidism. Proc Natl Acad Sci U S A 2024; 121:e2312724121. [PMID: 38315849 PMCID: PMC10873591 DOI: 10.1073/pnas.2312724121] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2023] [Accepted: 12/26/2023] [Indexed: 02/07/2024] Open
Abstract
Cryptorchidism is the most common form of disorder of sex development in male dogs, but its hereditary predisposition is poorly elucidated. The gonadal transcriptome of nine unilaterally cryptorchid dogs and seven control dogs was analyzed using RNA-seq. Comparison between the scrotal and inguinal gonads of unilateral cryptorchid dogs revealed 8,028 differentially expressed genes (DEGs) (3,377 up-regulated and 4,651 down-regulated). A similar number of DEGs (7,619) was found by comparing the undescended testicles with the descended testicles of the control dogs. The methylation status of the selected DEGs was also analyzed, with three out of nine studied DEGs showing altered patterns. Bioinformatic analysis of the cDNA sequences revealed 20,366 SNP variants, six of which showed significant differences in allelic counts between cryptorchid and control dogs. Validation studies in larger cohorts of cryptorchid (n = 122) and control (n = 173) dogs showed that the TT genotype (rs850666472, p.Ala1230Val) and the AA genotype in 3'UTR (16:23716202G>A) in KATA6, responsible for acetylation of lysine 9 in histone H3, are associated with cryptorchidism (P = 0.0383). Both the transcript level of KAT6A and H3K9 acetylation were lower in undescended testes, and additionally, the acetylation depended on the genotypes in exon 17 and the 3'UTR. Our study showed that the massive alteration of the transcriptome in undescended testicles is not caused by germinal DNA variants in DEG regulatory sequences but is partly associated with an aberrant DNA methylation and H3K9 acetylation patterns. Moreover, variants of KAT6A can be considered markers associated with the risk of this disorder.
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Affiliation(s)
- Monika Stachowiak
- Department of Genetics and Animal Breeding, Poznan University of Life Sciences, 60-637Poznan, Poland
| | - Joanna Nowacka-Woszuk
- Department of Genetics and Animal Breeding, Poznan University of Life Sciences, 60-637Poznan, Poland
| | - Alicja Szabelska-Beresewicz
- Department of Mathematical and Statistical Methods, Poznan University of Life Sciences, 60-637Poznan, Poland
| | - Joanna Zyprych-Walczak
- Department of Mathematical and Statistical Methods, Poznan University of Life Sciences, 60-637Poznan, Poland
| | - Paulina Krzeminska
- Department of Genetics and Animal Breeding, Poznan University of Life Sciences, 60-637Poznan, Poland
- Department of Ribonucleoprotein Biochemistry, Institute of Bioorganic Chemistry Polish Academy of Sciences, 61-704Poznan, Poland
| | - Oskar Sosinski
- Department of Genetics and Animal Breeding, Poznan University of Life Sciences, 60-637Poznan, Poland
| | - Tomasz Nowak
- Department of Genetics and Animal Breeding, Poznan University of Life Sciences, 60-637Poznan, Poland
| | - Marek Switonski
- Department of Genetics and Animal Breeding, Poznan University of Life Sciences, 60-637Poznan, Poland
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Ghare SS, Charpentier BT, Ghooray DT, Zhang J, Vadhanam MV, Reddy S, Joshi-Barve S, McClain CJ, Barve SS. Tributyrin Mitigates Ethanol-Induced Lysine Acetylation of Histone-H3 and p65-NFκB Downregulating CCL2 Expression and Consequent Liver Inflammation and Injury. Nutrients 2023; 15:4397. [PMID: 37892472 PMCID: PMC10610222 DOI: 10.3390/nu15204397] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2023] [Revised: 09/27/2023] [Accepted: 10/12/2023] [Indexed: 10/29/2023] Open
Abstract
PURPOSE Chemokine-driven leukocyte infiltration and sustained inflammation contribute to alcohol-associated liver disease (ALD). Elevated hepatic CCL2 expression, seen in ALD, is associated with disease severity. However, mechanisms of CCL2 regulation are not completely elucidated. Post-translational modifications (PTMs) of proteins, particularly acetylation, modulate gene expression. This study examined the acetylation changes of promoter-associated histone-H3 and key transcription factor-NFκB in regulating hepatic CCL2 expression and subsequent inflammation and injury. Further, the effect of therapeutic modulation of the acetylation state by tributyrin (TB), a butyrate prodrug, was assessed. METHODS Hepatic CCL2 expression was assessed in mice fed control (PF) or an ethanol-containing Lieber-DeCarli (5% v/v, EF) diet for 7 weeks with or without oral administration of tributyrin (TB, 2 g/kg, 5 days/week). A chromatin immunoprecipitation (ChIP) assay evaluated promoter-associated modifications. Nuclear association between SIRT1, p300, and NFκB-p65 and acetylation changes of p65 were determined using immunoprecipitation and Western blot analyses. A Student's t-test and one-way ANOVA determined the significance. RESULTS Ethanol significantly increased promoter-associated histone-H3-lysine-9 acetylation (H3K9Ac), reflecting a transcriptionally permissive state with a resultant increase in hepatic CCL2 mRNA and protein expression. Moreover, increased lysine-310-acetylation of nuclear RelA/p65 decreased its association with SIRT1, a class III HDAC, but concomitantly increased with p300, a histone acetyltransferase. This further led to enhanced recruitment of NF-κB/p65 and RNA polymerase-II to the CCL2 promoter. Oral TB administration prevented ethanol-associated acetylation changes, thus downregulating CCL2 expression, hepatic neutrophil infiltration, and inflammation/ injury. CONCLUSION The modulation of a protein acetylation state via ethanol or TB mechanistically regulates hepatic CCL2 upregulation in ALD.
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Affiliation(s)
- Smita S. Ghare
- Department of Medicine, University of Louisville, Louisville, KY 40202, USA
- UofL Alcohol Center, University of Louisville, Louisville, KY 40202, USA
- UofL Hepatobiology COBRE, University of Louisville, Louisville, KY 40202, USA
| | - Benjamin T. Charpentier
- UofL Alcohol Center, University of Louisville, Louisville, KY 40202, USA
- Department of Anatomical Science and Neurobiology, University of Louisville, Louisville, KY 40202, USA
| | - Dushan T. Ghooray
- Department of Medicine, University of Louisville, Louisville, KY 40202, USA
- UofL Alcohol Center, University of Louisville, Louisville, KY 40202, USA
- UofL Hepatobiology COBRE, University of Louisville, Louisville, KY 40202, USA
| | - Jingwen Zhang
- Department of Medicine, University of Louisville, Louisville, KY 40202, USA
- UofL Alcohol Center, University of Louisville, Louisville, KY 40202, USA
- UofL Hepatobiology COBRE, University of Louisville, Louisville, KY 40202, USA
| | - Manicka V. Vadhanam
- Department of Medicine, University of Louisville, Louisville, KY 40202, USA
- UofL Alcohol Center, University of Louisville, Louisville, KY 40202, USA
- UofL Hepatobiology COBRE, University of Louisville, Louisville, KY 40202, USA
| | - Sreelatha Reddy
- Department of Medicine, University of Louisville, Louisville, KY 40202, USA
- UofL Alcohol Center, University of Louisville, Louisville, KY 40202, USA
- UofL Hepatobiology COBRE, University of Louisville, Louisville, KY 40202, USA
| | - Swati Joshi-Barve
- Department of Medicine, University of Louisville, Louisville, KY 40202, USA
- UofL Alcohol Center, University of Louisville, Louisville, KY 40202, USA
- UofL Hepatobiology COBRE, University of Louisville, Louisville, KY 40202, USA
| | - Craig J. McClain
- Department of Medicine, University of Louisville, Louisville, KY 40202, USA
- UofL Alcohol Center, University of Louisville, Louisville, KY 40202, USA
- UofL Hepatobiology COBRE, University of Louisville, Louisville, KY 40202, USA
- Robley Rex VA Medical Center, University of Louisville, Louisville, KY 40202, USA
| | - Shirish S. Barve
- Department of Medicine, University of Louisville, Louisville, KY 40202, USA
- UofL Alcohol Center, University of Louisville, Louisville, KY 40202, USA
- UofL Hepatobiology COBRE, University of Louisville, Louisville, KY 40202, USA
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Liu L, Yu F, Chen L, Xia L, Wu C, Fang B. Lithium-Containing Biomaterials Stimulate Cartilage Repair through Bone Marrow Stromal Cells-Derived Exosomal miR-455-3p and Histone H3 Acetylation. Adv Healthc Mater 2023; 12:e2202390. [PMID: 36623538 DOI: 10.1002/adhm.202202390] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2022] [Revised: 12/24/2022] [Indexed: 01/11/2023]
Abstract
The repair of damaged cartilage still remains a great challenge in clinic. It is demonstrated that bone marrow stromal cells (BMSCs)-chondrocytes communication is of great significance for cartilage repair. Moreover, BMSCs have been confirmed to enhance biological function of chondrocytes via exosome-mediated paracrine pathway. Lithium-containing scaffolds have been reported to effectively promote cartilage regeneration; however, whether lithium-containing biomaterial could facilitate cartilage regeneration through regulating BMSCs-derived exosomes has not been illustrated. In the study, the model lithium-substituted bioglass ceramic (Li-BGC) is selected and regulatory effects of BMSCs-derived exosomes after Li-BGC treatment (Li-BGC-Exo) are systemically evaluated. The data reveal that Li-BGC-Exo notably promotes chondrogenesis, which attributes to the upregulated exosomal miR-455-3p transfer, consequently leads to suppression of histone deacetylase 2 (HDAC2) and enhanced histone H3 acetylation in chondrocytes. Notably, BMSCs-derived exosomes after LiCl treatment (LiCl-Exo) exhibits the similar regulatory effect with Li-BGC-Exo, indicating that the pro-chondrogenesis capability of them is mainly owing to the lithium ions. Furthermore, the in vivo study proves that LiCl-Exo remarkably facilitates cartilage regeneration. The research may provide novel possibility for the intrinsic mechanism of chondrogenesis trigged by lithium-containing biomaterials, and suggests that application of lithium-containing scaffolds may be a promising strategy for cartilage regeneration.
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Affiliation(s)
- Lu Liu
- Department of Orthodontics, Shanghai Ninth People's Hospital, Collage of Stomatology, Shanghai Jiao Tong University School of Medicine, Shanghai, 200011, China.,National Clinical Research Center for Oral Diseases, Shanghai Key Laboratory of Stomatology & Shanghai Research Institute of Stomatology, Shanghai, 200011, China
| | - Fei Yu
- Department of Orthodontics, Shanghai Ninth People's Hospital, Collage of Stomatology, Shanghai Jiao Tong University School of Medicine, Shanghai, 200011, China.,National Clinical Research Center for Oral Diseases, Shanghai Key Laboratory of Stomatology & Shanghai Research Institute of Stomatology, Shanghai, 200011, China
| | - Lei Chen
- State Key Laboratory of High Performance Ceramics and Superfine Microstructure, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai, 200050, China
| | - Lunguo Xia
- Department of Orthodontics, Shanghai Ninth People's Hospital, Collage of Stomatology, Shanghai Jiao Tong University School of Medicine, Shanghai, 200011, China.,National Clinical Research Center for Oral Diseases, Shanghai Key Laboratory of Stomatology & Shanghai Research Institute of Stomatology, Shanghai, 200011, China
| | - Chengtie Wu
- State Key Laboratory of High Performance Ceramics and Superfine Microstructure, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai, 200050, China
| | - Bing Fang
- Department of Orthodontics, Shanghai Ninth People's Hospital, Collage of Stomatology, Shanghai Jiao Tong University School of Medicine, Shanghai, 200011, China.,National Clinical Research Center for Oral Diseases, Shanghai Key Laboratory of Stomatology & Shanghai Research Institute of Stomatology, Shanghai, 200011, China
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Wei R, Zhu Y, Zhang Y, Zhao W, Yu X, Wang L, Gu C, Gu X, Yang Y. AIMP1 promotes multiple myeloma malignancy through interacting with ANP32A to mediate histone H3 acetylation. Cancer Commun (Lond) 2022; 42:1185-1206. [PMID: 36042007 DOI: 10.1002/cac2.12356] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/12/2022] [Revised: 05/23/2022] [Accepted: 08/16/2022] [Indexed: 11/08/2022]
Abstract
BACKGROUND Multiple myeloma (MM) is the second most common hematological malignancy. An overwhelming majority of patients with MM progress to serious osteolytic bone disease. Aminoacyl-tRNA synthetase-interacting multifunctional protein 1 (AIMP1) participates in several steps during cancer development and osteoclast differentiation. This study aimed to explore its role in MM. METHODS The gene expression profiling cohorts of MM were applied to determine the expression of AIMP1 and its association with MM patient prognosis. Enzyme-linked immunosorbent assay, immunohistochemistry, and Western blotting were used to detect AIMP1 expression. Protein chip analysis, RNA-sequencing, and chromatin immunoprecipitation and next-generation sequencing were employed to screen the interacting proteins and key downstream targets of AIMP1. The impact of AIMP1 on cellular proliferation was determined using 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide (MTT) assay in vitro and a xenograft model in vivo. Bone lesions were evaluated using tartrate-resistant acid phosphatase staining in vitro. A NOD/SCID-TIBIA mouse model was used to evaluate the effect of siAIMP1-loaded exosomes on bone lesion formation in vivo. RESULTS AIMP1 expression was increased in MM patients and strongly associated with unfavorable outcomes. Increased AIMP1 expression promoted MM cell proliferation in vitro and in vivo via activation of the mitogen-activated protein kinase (MAPK) signaling pathway. Protein chip assays and subsequent experiments revealed that AIMP1 interacted with acidic leucine-rich nuclear phosphoprotein 32 family member A (ANP32A) to regulate histone H3 acetylation. In addition, AIMP1 increased histone H3 acetylation enrichment function of GRB2-associated and regulator of MAPK protein 2 (GAREM2) to increase the phosphorylation of extracellular-regulated kinase 1/2 (p-ERK1/2). Furthermore, AIMP1 promoted osteoclast differentiation by activating nuclear factor of activated T cells c1 (NFATc1) in vitro. In contrast, exosome-coated small interfering RNA of AIMP1 effectively suppressed MM progression and osteoclast differentiation in vitro and in vivo. CONCLUSIONS Our data demonstrate that AIMP1 is a novel regulator of histone H3 acetylation interacting with ANP32A in MM, which accelerates MM malignancy via activation of the MAPK signaling pathway.
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Affiliation(s)
- Rongfang Wei
- Nanjing Hospital of Chinese Medicine affiliated to Nanjing University of Chinese Medicine, Nanjing, Jiangsu, 210001, P. R. China.,School of Medicine & Holistic Integrative Medicine, Nanjing University of Chinese Medicine, Nanjing, Jiangsu, 210023, P. R. China
| | - Yan Zhu
- School of Medicine & Holistic Integrative Medicine, Nanjing University of Chinese Medicine, Nanjing, Jiangsu, 210023, P. R. China
| | - Yuanjiao Zhang
- School of Medicine & Holistic Integrative Medicine, Nanjing University of Chinese Medicine, Nanjing, Jiangsu, 210023, P. R. China
| | - Wene Zhao
- Department of Analytical and Testing Center, Nanjing Medical University, Nanjing, Jiangsu, 211112, P. R. China
| | - Xichao Yu
- School of Medicine & Holistic Integrative Medicine, Nanjing University of Chinese Medicine, Nanjing, Jiangsu, 210023, P. R. China
| | - Ling Wang
- School of Medicine & Holistic Integrative Medicine, Nanjing University of Chinese Medicine, Nanjing, Jiangsu, 210023, P. R. China
| | - Chunyan Gu
- Nanjing Hospital of Chinese Medicine affiliated to Nanjing University of Chinese Medicine, Nanjing, Jiangsu, 210001, P. R. China.,School of Medicine & Holistic Integrative Medicine, Nanjing University of Chinese Medicine, Nanjing, Jiangsu, 210023, P. R. China
| | - Xiaosong Gu
- Nanjing Hospital of Chinese Medicine affiliated to Nanjing University of Chinese Medicine, Nanjing, Jiangsu, 210001, P. R. China.,School of Medicine & Holistic Integrative Medicine, Nanjing University of Chinese Medicine, Nanjing, Jiangsu, 210023, P. R. China.,Key Laboratory of Neuroregeneration of Jiangsu and Ministry of Education, Nantong University, Nantong, Jiangsu, 226019, P. R. China
| | - Ye Yang
- School of Medicine & Holistic Integrative Medicine, Nanjing University of Chinese Medicine, Nanjing, Jiangsu, 210023, P. R. China
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Xu Y, Wang Y, Wang L, Liang W, Yang Q. Sodium Valproate Is Effective Against Botrytis cinerea Infection of Tomato by Enhancing Histone H3 Acetylation-Directed Gene Transcription and Triggering Tomato Fruit Immune Response. Phytopathology 2022; 112:1264-1272. [PMID: 34982575 DOI: 10.1094/phyto-11-21-0483-r] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
Botrytis cinerea causes gray mold resulting in enormous financial loss. Fungicide resistance of B. cinerea has become a serious issue in food safety and agricultural environmental protection. Sodium valproate (SV) has been used in clinical trials; thus, it is an excellent candidate for fungicide development, considering its safety. However, the antifungal activity remains unclear. SV was effective against B. cinerea by enhancing acetylation of histone H3, including H3K9ac, H3K14ac, and H3K56ac. A transcriptomics analysis revealed that the expression of 1,557 genes changed significantly in response to SV. A pathway enrichment analysis identified 16 significant GO terms, in which molecular functions were mainly involved. In addition, the expression levels of 13 genes involved in B. cinerea virulence and five genes involved in tomato immune response were altered by the SV treatment. These results indicate that SV inhibits B. cinerea by enhancing acetylation of histone H3 and modifying gene transcription. Thus, SV is an effective, safe, potential antifungal agent for control of both pre- and postharvest losses caused by B. cinerea.
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Affiliation(s)
- Yang Xu
- College of Plant Health and Medicine, Qingdao Agricultural University, Qingdao 266109, China
| | - Yameng Wang
- College of Plant Health and Medicine, Qingdao Agricultural University, Qingdao 266109, China
| | - Lulu Wang
- College of Plant Health and Medicine, Qingdao Agricultural University, Qingdao 266109, China
| | - Wenxing Liang
- College of Plant Health and Medicine, Qingdao Agricultural University, Qingdao 266109, China
| | - Qianqian Yang
- College of Plant Health and Medicine, Qingdao Agricultural University, Qingdao 266109, China
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Pike JW, Meyer MB. New Approaches to Assess Mechanisms of Action of Selective Vitamin D Analogues. Int J Mol Sci 2021; 22:ijms222212352. [PMID: 34830234 PMCID: PMC8619157 DOI: 10.3390/ijms222212352] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2021] [Revised: 11/05/2021] [Accepted: 11/11/2021] [Indexed: 12/28/2022] Open
Abstract
Recent studies of transcription have revealed an advanced set of overarching principles that govern vitamin D action on a genome-wide scale. These tenets of vitamin D transcription have emerged as a result of the application of now well-established techniques of chromatin immunoprecipitation coupled to next-generation DNA sequencing that have now been linked directly to CRISPR-Cas9 genomic editing in culture cells and in mouse tissues in vivo. Accordingly, these techniques have established that the vitamin D hormone modulates sets of cell-type specific genes via an initial action that involves rapid binding of the VDR-ligand complex to multiple enhancer elements at open chromatin sites that drive the expression of individual genes. Importantly, a sequential set of downstream events follows this initial binding that results in rapid histone acetylation at these sites, the recruitment of additional histone modifiers across the gene locus, and in many cases, the appearance of H3K36me3 and RNA polymerase II across gene bodies. The measured recruitment of these factors and/or activities and their presence at specific regions in the gene locus correlate with the emerging presence of cognate transcripts, thereby highlighting sequential molecular events that occur during activation of most genes both in vitro and in vivo. These features provide a novel approach to the study of vitamin D analogs and their actions in vivo and suggest that they can be used for synthetic compound evaluation and to select for novel tissue- and gene-specific features. This may be particularly useful for ligand activation of nuclear receptors given the targeting of these factors directly to genetic sites in the nucleus.
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Affiliation(s)
- John Wesley Pike
- Correspondence: ; Tel.: +1-(608)-262-8229; Fax: +1-(608)-263-7609
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Abstract
Throughout recent decades, histone deacetylase (HDAC) inhibitors have shown encouraging potential in cancer treatment, and several pan-HDAC inhibitors have been approved for treating malignant cancers. Numerous adverse effects of pan-HDAC inhibitors have been reported, however, during preclinical and clinical evaluations. To avoid undesirable responses, an increasing number of investigations are focusing on the development of isotype-selective HDAC inhibitors. In this study, we present an effective and quantitative cellular assay using high-content analysis (HCA) to determine compounds' inhibition of the activity of HDAC6 and Class I HDAC isoforms, by detecting the acetylation of their corresponding substrates (i.e., α-tubulin and histone H3). Several conditions that are critical for HCA assays, such as cell seeding number, fixation and permeabilization reagent, and antibody dilution, have been fully validated in this study. We used selective HDAC6 inhibitors and inhibitors targeting different HDAC isoforms to optimize and validate the capability of the HCA assay. The results indicated that the HCA assay is a robust assay for quantifying compounds' selectivity of HDAC6 and Class I HDAC isoforms in cells. Moreover, we screened a panel of compounds for HDAC6 selectivity using this HCA assay, which provided valuable information for the structure-activity relationship (SAR). In summary, our results suggest that the HCA assay is a powerful tool for screening selective HDAC6 inhibitors.
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Affiliation(s)
- Yunhong Nong
- Discovery Project Unit, HitGen, Chengdu, Sichuan, China
| | - Yanyan Hou
- Discovery Project Unit, HitGen, Chengdu, Sichuan, China
| | - Yuting Pu
- Discovery Project Unit, HitGen, Chengdu, Sichuan, China
| | - Si Li
- Discovery Project Unit, HitGen, Chengdu, Sichuan, China
| | - Yan Lan
- Discovery Project Unit, HitGen, Chengdu, Sichuan, China
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Bai L, Sun H, Jiang W, Yang L, Liu G, Zhao X, Hu H, Wang J, Gao S. DNA methylation and histone acetylation are involved in Wnt10b expression during the secondary hair follicle cycle in Angora rabbits. J Anim Physiol Anim Nutr (Berl) 2021; 105:599-609. [PMID: 33404138 DOI: 10.1111/jpn.13481] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2020] [Revised: 09/03/2020] [Accepted: 11/02/2020] [Indexed: 12/25/2022]
Abstract
Secondary hair follicles (SHFs) in the Angora rabbit exhibit classic cyclic hair development, but the multiple molecular signals involved in hair cycling are yet to be explored in detail. In the present study, we investigated the expression pattern, methylation and histone H3 acetylation status of Wnt10b, as a molecular signal participating in hair cycling, during the SHF cycle in the Angora rabbit. Expression of Wnt10b at the anagen phase was significantly higher than that at both the telogen and catagen phases, suggesting that Wnt10b might serve as a critical activator during cyclic transition of SHFs. Methylation frequency of the fifth CpG site (CpG5-175 bp) in CpG islands at the anagen phase was lower than that at both the catagen and telogen phases. The methylation status of the CpG5 site was negatively correlated with Wnt10b expression. This indicated that the methylation of CpG5 might participate in Wnt10b transcriptional suppression in SHFs. Furthermore, histone H3 acetylation status in the regions-256~-11 bp and 98 ~ 361 bp were significantly lower at both the catagen and telogen phases than at the anagen phase. The histone H3 acetylation level was significantly positively correlated with Wnt10b expression. This confirmed that histone acetylation was likely involved in upregulating Wnt10b transcription in SHFs. Additionally, potential binding to the transcription factors ZF57 and HDBP was predicted within the CpG5 site. In conclusion, our findings reveal the epigenetic mechanism of Wnt10b transcription and provide a new insight into epigenetic regulation during the SHF cycle in the Angora rabbit.
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Affiliation(s)
- Liya Bai
- Shandong Provincial Key Laboratory of Animal Disease Control & Breeding, Institute of Animal Science and Veterinary Medicine, Shandong Academy of Agricultural Sciences, Jinan, China
| | - Haitao Sun
- Shandong Provincial Key Laboratory of Animal Disease Control & Breeding, Institute of Animal Science and Veterinary Medicine, Shandong Academy of Agricultural Sciences, Jinan, China
| | - Wenxue Jiang
- Shandong Provincial Key Laboratory of Animal Disease Control & Breeding, Institute of Animal Science and Veterinary Medicine, Shandong Academy of Agricultural Sciences, Jinan, China
| | - Liping Yang
- Shandong Provincial Key Laboratory of Animal Disease Control & Breeding, Institute of Animal Science and Veterinary Medicine, Shandong Academy of Agricultural Sciences, Jinan, China
| | - Gongyan Liu
- Shandong Provincial Key Laboratory of Animal Disease Control & Breeding, Institute of Animal Science and Veterinary Medicine, Shandong Academy of Agricultural Sciences, Jinan, China
| | - Xueyan Zhao
- Shandong Provincial Key Laboratory of Animal Disease Control & Breeding, Institute of Animal Science and Veterinary Medicine, Shandong Academy of Agricultural Sciences, Jinan, China
| | - Hongmei Hu
- Shandong Provincial Key Laboratory of Animal Disease Control & Breeding, Institute of Animal Science and Veterinary Medicine, Shandong Academy of Agricultural Sciences, Jinan, China
| | - Jianying Wang
- Shandong Provincial Key Laboratory of Animal Disease Control & Breeding, Institute of Animal Science and Veterinary Medicine, Shandong Academy of Agricultural Sciences, Jinan, China
| | - Shuxia Gao
- Shandong Provincial Key Laboratory of Animal Disease Control & Breeding, Institute of Animal Science and Veterinary Medicine, Shandong Academy of Agricultural Sciences, Jinan, China
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Zhang F, Icyuz M, Bartke A, Sun LY. The effects of early-life growth hormone intervention on tissue specific histone H3 modifications in long-lived Ames dwarf mice. Aging (Albany NY) 2020; 13:1633-1648. [PMID: 33378746 PMCID: PMC7880366 DOI: 10.18632/aging.202451] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2020] [Accepted: 10/29/2020] [Indexed: 11/25/2022]
Abstract
Histone modifications, specifically in the lysine residues of histone H3, have been implicated in lifespan regulation in several model organisms. Our previous studies showed that growth hormone (GH) treatment during early life can dramatically influence lifespan in long-lived Ames dwarf mice. However, the effects of this hormonal intervention on epigenetic modifications have never been examined. In this study, we sought to compare tissue-specific histone H3 lysine methylation and acetylation markers in Ames dwarf and wild type (WT) mice and to determine how these markers are affected by early-life GH intervention. Ames dwarf mice exhibited suppressed H3K4me in both hepatic and brain tissues, while showing elevated H3K27me in the brain. Early-life GH intervention significantly altered the histone H3 markers in those tissues. Furthermore, early GH intervention increased expression of histone H3 acetylation at multiple lysine residues in a tissue-specific manner. This included changes in H3K14ac and H3K18ac in the liver and brain, H3K18ac in visceral adipose tissue and H3K9ac, H3K14ac and H3K27ac in subcutaneous adipose tissue. This study serves as an initial, but important step in elucidating the epigenetic mechanisms by which hormonal signals during early life can influence aging and longevity in mammals.
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Affiliation(s)
- Fang Zhang
- Department of Biology, University of Alabama at Birmingham, Birmingham, AL 35254, USA
| | - Mert Icyuz
- Department of Biology, University of Alabama at Birmingham, Birmingham, AL 35254, USA
| | - Andrzej Bartke
- Department of Internal Medicine, Southern Illinois University School of Medicine, Springfield, IL 62702, USA
| | - Liou Y. Sun
- Department of Biology, University of Alabama at Birmingham, Birmingham, AL 35254, USA
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Li C, Chen Y, Zhu H, Zhang X, Han L, Zhao Z, Wang J, Ning L, Zhou W, Lu C, Xu L, Sang J, Feng Z, Zhang Y, Lou X, Bo X, Zhu B, Yu C, Zheng M, Li Y, Sun J, Shen Z. Inhibition of Histone Deacetylation by MS-275 Alleviates Colitis by Activating the Vitamin D Receptor. J Crohns Colitis 2020; 14:1103-1118. [PMID: 32030401 DOI: 10.1093/ecco-jcc/jjaa016] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
BACKGROUND Ulcerative colitis [UC] is a common chronic inflammatory bowel disease without curative treatment. METHODS We conducted gene set enrichment analysis to explore potential therapeutic agents for UC. Human colon tissue samples were collected to test H3 acetylation in UC. Both in vivo and in vitro colitis models were constructed to verify the role and mechanism of H3 acetylation modification in UC. Intestine-specific vitamin D receptor [VDR]-/- mice and VD [vitamin D]-deficient diet-fed mice were used to explore downstream molecular mechanisms accordingly. RESULTS According to the Connectivity Map database, MS-275 [class I histone deacetylase inhibitor] was the top-ranked agent, indicating the potential importance of histone acetylation in the pathogenesis of UC. We then found that histone H3 acetylation was significantly lower in the colon epithelium of UC patients and negatively associated with disease severity. MS-275 treatment inhibited histone H3 deacetylation, subsequently attenuating nuclear factor kappa B [NF-κB]-induced inflammation, reducing cellular apoptosis, maintaining epithelial barrier function, and thereby reducing colitis activity in a mouse model of colitis. We also identified VDR as be a downstream effector of MS-275. The curative effect of MS-275 on colitis was abolished in VDR-/- mice and in VD-deficient diet-fed mice and VDR directly targeted p65. In UC patients, histone H3 acetylation, VDR and zonulin-1 expression showed similar downregulation patterns and were negatively associated with disease severity. CONCLUSIONS We demonstrate that MS-275 inhibits histone deacetylation and alleviates colitis by ameliorating inflammation, reducing apoptosis, and maintaining intestinal epithelial barrier via VDR, providing new strategies for UC treatment.
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Affiliation(s)
- Chunxiao Li
- Department of Gastroenterology, First Affiliated Hospital, College of Medicine, Zhejiang University, Hangzhou, China
- Department of Gastroenterology, Ningbo First Hospital, Ningbo, China
| | - Yi Chen
- Department of Gastroenterology, First Affiliated Hospital, College of Medicine, Zhejiang University, Hangzhou, China
| | - Huatuo Zhu
- Department of Gastroenterology, First Affiliated Hospital, College of Medicine, Zhejiang University, Hangzhou, China
| | - Xiuming Zhang
- Department of Pathology, First Affiliated Hospital, College of Medicine, Zhejiang University, Hangzhou, China
| | - Lu Han
- Department of Neuroimmunopharmacology, Beijing Institute of Pharmacology and Toxicology, Beijing, China
- Department of Neuroimmunopharmacology, State Key Laboratory of Toxicology and Medical Countermeasures, Beijing, China
| | - Zuodong Zhao
- National Laboratory of Biomacromolecules, Institute of Biophysics, Chinese Academy of Sciences, Beijing, China
| | - Jinghua Wang
- Department of Gastroenterology, First Affiliated Hospital, College of Medicine, Zhejiang University, Hangzhou, China
| | - Longgui Ning
- Department of Gastroenterology, First Affiliated Hospital, College of Medicine, Zhejiang University, Hangzhou, China
| | - Weihua Zhou
- Department of Gastroenterology, First Affiliated Hospital, College of Medicine, Zhejiang University, Hangzhou, China
| | - Chao Lu
- Department of Gastroenterology, First Affiliated Hospital, College of Medicine, Zhejiang University, Hangzhou, China
| | - Lei Xu
- Department of Gastroenterology, Ningbo First Hospital, Ningbo, China
| | - Jianzhong Sang
- Department of Gastroenterology, Yuyao People's Hospital of Zhejiang Province, Ningbo, China
| | - Zemin Feng
- Department of Gastroenterology, First Affiliated Hospital, College of Medicine, Zhejiang University, Hangzhou, China
| | - Yuwei Zhang
- Department of Gastroenterology, First Affiliated Hospital, College of Medicine, Zhejiang University, Hangzhou, China
| | - Xinhe Lou
- Department of Gastroenterology, First Affiliated Hospital, College of Medicine, Zhejiang University, Hangzhou, China
| | - Xiaochen Bo
- Department of Biotechnology, Beijing Institute of Radiation Medicine, Beijing, China
| | - Bing Zhu
- National Laboratory of Biomacromolecules, Institute of Biophysics, Chinese Academy of Sciences, Beijing, China
| | - Chaohui Yu
- Department of Gastroenterology, First Affiliated Hospital, College of Medicine, Zhejiang University, Hangzhou, China
| | - Min Zheng
- State Key Laboratory for Diagnosis and Treatment of Infectious Diseases, First Affiliated Hospital, College of Medicine, Zhejiang University, Hangzhou, China
- Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases, First Affiliated Hospital, College of Medicine, Zhejiang University, Hangzhou, China
| | - Youming Li
- Department of Gastroenterology, First Affiliated Hospital, College of Medicine, Zhejiang University, Hangzhou, China
| | - Jing Sun
- Department of Gastroenterology, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Zhe Shen
- Department of Gastroenterology, First Affiliated Hospital, College of Medicine, Zhejiang University, Hangzhou, China
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Kokare DM, Kyzar EJ, Zhang H, Sakharkar AJ, Pandey SC. Adolescent Alcohol Exposure-Induced Changes in Alpha-Melanocyte Stimulating Hormone and Neuropeptide Y Pathways via Histone Acetylation in the Brain During Adulthood. Int J Neuropsychopharmacol 2017; 20:758-768. [PMID: 28575455 PMCID: PMC5581492 DOI: 10.1093/ijnp/pyx041] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/20/2016] [Revised: 04/15/2017] [Accepted: 05/30/2017] [Indexed: 12/18/2022] Open
Abstract
Background Adolescent intermittent ethanol exposure causes long-lasting alterations in brain epigenetic mechanisms. Melanocortin and neuropeptide Y signaling interact and are affected by ethanol exposure in the brain. Here, the persistent effects of adolescent intermittent ethanol on alpha-melanocyte stimulating hormone, melanocortin 4 receptor, and neuropeptide Y expression and their regulation by histone acetylation mechanisms were investigated in adulthood. Methods Male rats were exposed to adolescent intermittent ethanol (2 g/kg, i.p.) or volume-matched adolescent intermittent saline from postnatal days 28 to 41 and allowed to grow to postnatal day 92. Anxiety-like behaviors were measured by the elevated plus-maze test. Brain regions from adult rats were used to examine changes in alpha-melanocyte stimulating hormone, melanocortin 4 receptor, and neuropeptide Y expression and the histone acetylation status of their promoters. Results Adolescent intermittent ethanol-exposed adult rats displayed anxiety-like behaviors and showed increased pro-opiomelanocortin mRNA levels in the hypothalamus and increased melanocortin 4 receptor mRNA levels in both the amygdala and hypothalamus compared with adolescent intermittent saline-exposed adult rats. The alpha-Melanocyte stimulating hormone and melanocortin 4 receptor protein levels were increased in the central and medial nucleus of the amygdala, paraventricular nucleus, and arcuate nucleus of the hypothalamus in adolescent intermittent ethanol-exposed compared with adolescent intermittent saline-exposed adult rats. Neuropeptide Y protein levels were decreased in the central and medial nucleus of the amygdala of adolescent intermittent ethanol-exposed compared with adolescent intermittent saline-exposed adult rats. Histone H3K9/14 acetylation was decreased in the neuropeptide Y promoter in the amygdala but increased in the melanocortin 4 receptor gene promoter in the amygdala and the melanocortin 4 receptor and pro-opiomelanocortin promoters in the hypothalamus of adolescent intermittent ethanol-exposed adult rats compared with controls. Conclusions Increased melanocortin and decreased neuropeptide Y activity due to changes in histone acetylation in emotional brain circuitry may play a role in adolescent intermittent ethanol-induced anxiety phenotypes in adulthood.
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Affiliation(s)
- Dadasaheb M Kokare
- Center for Alcohol Research in Epigenetics, Department of Psychiatry (Dr Kokare, Mr Kyzar, and Drs Zhang, Sakharkar, and Pandey), and Department of Anatomy and Cell Biology (Dr Pandey), University of Illinois at Chicago, Chicago; Jesse Brown Veterans Affairs Medical Center, Chicago, Illinois (Mr Kyzar and Drs Zhang, Sakharkar, and Pandey)
| | - Evan J Kyzar
- Center for Alcohol Research in Epigenetics, Department of Psychiatry (Dr Kokare, Mr Kyzar, and Drs Zhang, Sakharkar, and Pandey), and Department of Anatomy and Cell Biology (Dr Pandey), University of Illinois at Chicago, Chicago; Jesse Brown Veterans Affairs Medical Center, Chicago, Illinois (Mr Kyzar and Drs Zhang, Sakharkar, and Pandey)
| | - Huaibo Zhang
- Center for Alcohol Research in Epigenetics, Department of Psychiatry (Dr Kokare, Mr Kyzar, and Drs Zhang, Sakharkar, and Pandey), and Department of Anatomy and Cell Biology (Dr Pandey), University of Illinois at Chicago, Chicago; Jesse Brown Veterans Affairs Medical Center, Chicago, Illinois (Mr Kyzar and Drs Zhang, Sakharkar, and Pandey)
| | - Amul J Sakharkar
- Center for Alcohol Research in Epigenetics, Department of Psychiatry (Dr Kokare, Mr Kyzar, and Drs Zhang, Sakharkar, and Pandey), and Department of Anatomy and Cell Biology (Dr Pandey), University of Illinois at Chicago, Chicago; Jesse Brown Veterans Affairs Medical Center, Chicago, Illinois (Mr Kyzar and Drs Zhang, Sakharkar, and Pandey)
| | - Subhash C Pandey
- Center for Alcohol Research in Epigenetics, Department of Psychiatry (Dr Kokare, Mr Kyzar, and Drs Zhang, Sakharkar, and Pandey), and Department of Anatomy and Cell Biology (Dr Pandey), University of Illinois at Chicago, Chicago; Jesse Brown Veterans Affairs Medical Center, Chicago, Illinois (Mr Kyzar and Drs Zhang, Sakharkar, and Pandey)
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Tseng TH, Chien MH, Lin WL, Wen YC, Chow JM, Chen CK, Kuo TC, Lee WJ. Inhibition of MDA-MB-231 breast cancer cell proliferation and tumor growth by apigenin through induction of G2/M arrest and histone H3 acetylation-mediated p21 WAF1/CIP1 expression. Environ Toxicol 2017; 32:434-444. [PMID: 26872304 DOI: 10.1002/tox.22247] [Citation(s) in RCA: 86] [Impact Index Per Article: 12.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/22/2015] [Revised: 01/07/2016] [Accepted: 01/23/2016] [Indexed: 06/05/2023]
Abstract
Apigenin (4',5,7-trihydroxyflavone), a flavonoid commonly found in fruits and vegetables, has anticancer properties in various malignant cancer cells. However, the molecular basis of the anticancer effect remains to be elucidated. In this study, we investigated the cellular mechanisms underlying the induction of cell cycle arrest by apigenin. Our results showed that apigenin at the nonapoptotic induction concentration inhibited cell proliferation and induced cell cycle arrest at the G2/M phase in the MDA-MB-231 breast cancer cell line. Immunoblot analysis indicated that apigenin suppressed the expression of cyclin A, cyclin B, and cyclin-dependent kinase-1 (CDK1), which control the G2-to-M phase transition in the cell cycle. In addition, apigenin upregulated p21WAF1/CIP1 and increased the interaction of p21WAF1/CIP1 with proliferating cell nuclear antigen (PCNA), which inhibits cell cycle progression. Furthermore, apigenin significantly inhibited histone deacetylase (HDAC) activity and induced histone H3 acetylation. The subsequent chromatin immunoprecipitation (ChIP) assay indicated that apigenin increased acetylation of histone H3 in the p21WAF1/CIP1 promoter region, resulting in the increase of p21WAF1/CIP1 transcription. In a tumor xenograft model, apigenin effectively delayed tumor growth. In these apigenin-treated tumors, we also observed reductions in the levels of cyclin A and cyclin B and increases in the levels of p21WAF1/CIP1 and acetylated histone H3. These findings demonstrate for the first time that apigenin can be used in breast cancer prevention and treatment through epigenetic regulation. © 2016 Wiley Periodicals, Inc. Environ Toxicol 32: 434-444, 2017.
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Affiliation(s)
- Tsui-Hwa Tseng
- Department of Medical Applied Chemistry, Chung Shan Medical University, Taichung, Taiwan
- Department of Medical Education, Chung Shan Medical University Hospital, Taichung, Taiwan
| | - Ming-Hsien Chien
- Graduate Institute of Clinical Medicine, College of Medicine, Taipei Medical University, Taipei, Taiwan
- Department of Medical Education and Research, Wan Fang Hospital, Taipei Medical University, Taipei, Taiwan
| | - Wea-Lung Lin
- Department of Pathology, Chung Shan Medical University Hospital, Taichung, Taiwan
| | - Yu-Ching Wen
- Department of Urology, Wan Fang Hospital, Taipei Medical University, Taipei, Taiwan
| | - Jyh-Ming Chow
- Division of Hematology and Medical Oncology, Department of Internal Medicine, Taipei Medical University, Wan Fang Hospital, Taipei, Taiwan
| | - Chi-Kuan Chen
- Genomics Research Center, Academia Sinica, Taipei, Taiwan
| | - Tsang-Chih Kuo
- Institute of Biochemical Science, College of Life Science, National Taiwan University, Taipei, Taiwan
| | - Wei-Jiunn Lee
- Department of Medical Education and Research, Wan Fang Hospital, Taipei Medical University, Taipei, Taiwan
- Department of Urology, School of Medicine, College of Medicine, Taipei Medical University, Taipei, Taiwan
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Nakayama T, Mikoshiba K, Akagawa K. The cell- and tissue-specific transcription mechanism of the TATA-less syntaxin 1A gene. FASEB J 2015; 30:525-43. [PMID: 26391271 DOI: 10.1096/fj.15-275529] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2015] [Accepted: 08/31/2015] [Indexed: 11/11/2022]
Abstract
Syntaxin 1A (Stx1a) plays an important role in regulation of neuronal synaptic function. To clarify the mechanism of basic transcriptional regulation and neuron-specific transcription of Stx1a we cloned the Stx1a gene from rat, in which knowledge of the expression profile was accumulated, and elucidated that Stx1a consisting of 10 exons, possesses multiple transcription initiation sites and a 204-bp core promoter region (CPR) essential for transcription in PC12 cells. The TATA-less, conserved, GC-rich CPR has 2 specific protein (SP) sites that bind SP1 and are responsible for 65% of promoter activity. The endogenous CPR, including 23 CpG sites, is not methylated in PC12 cells, which express Stx1a and fetal rat skin keratinocyte (FRSK) cells, which do not, although an exogenous methylated CPR suppresses reporter activity in both lines. Trichostatin A (TSA) and class I histone deacetylase (HDAC) inhibitors, but not 5-azacytidine, induce Stx1a in FRSK cells. Acetylated histone H3 only associates to the CPR in FRSK cells after TSA addition, whereas the high acetylated histone H3-CPR association in PC12 cells was unchanged following treatment. HDAC inhibitor induction of Stx1a was negated by mithramycin A and deletion/mutation of 2 SP sites. HDAC1, HDAC2, and HDAC8 detach from the CPR when treated with TSA in FRSK cells and are associated with the CPR in lungs, and acetylated histone H3 associates to this region in the brain. In the first study characterizing a syntaxin promoter, we show that association of SP1 and acetylated histone H3 to CPR is important for Stx1a transcription and that HDAC1, HDAC2, and HDAC8 decide cell/tissue specificity in a suppressive manner.
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Affiliation(s)
- Takahiro Nakayama
- *Department of Physiology, Kyorin University School of Medicine, Tokyo, Japan; and RIKEN Brain Science Institute, Neuro-Developmental Disorder Research Group, Laboratory for Developmental Neurobiology, Saitama, Japan
| | - Katsuhiko Mikoshiba
- *Department of Physiology, Kyorin University School of Medicine, Tokyo, Japan; and RIKEN Brain Science Institute, Neuro-Developmental Disorder Research Group, Laboratory for Developmental Neurobiology, Saitama, Japan
| | - Kimio Akagawa
- *Department of Physiology, Kyorin University School of Medicine, Tokyo, Japan; and RIKEN Brain Science Institute, Neuro-Developmental Disorder Research Group, Laboratory for Developmental Neurobiology, Saitama, Japan
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Li J, Cheng G, Zheng M, Zhao Y, Zhou J, Li W. The Core Promoter and Redox-sensitive Cis-elements as Key Targets for Inactivation of the Lysyl Oxidase Gene by Cadmium. J Nat Sci 2015; 1:e38. [PMID: 25741534 PMCID: PMC4346169] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
Exposure of humans to cadmium (Cd) either from environmental contamination or from cigarette smoke, often induces lung emphysema and cancers. Lysyl oxidase (LOX), a copper-dependent enzyme essential for crosslinking of the extracellular matrix, displays antagonistic effects on emphysema and cancer pathogenesis. Our previous studies showed down-regulation of LOX in Cd-resistant (CdR) rat fetal lung fibroblasts (RFL6) derived from parental cells via long-term Cd exposure. The cloned rat LOX gene promoter -804/-1 (relative to ATG) with the maximal promoter activity contains the Inr-DPE core promoter, putative NFI binding sites, metal response elements (MRE) and antioxidant response elements (ARE). ChIP assays reported here further characterize the rat LOX gene promoter in response to Cd. CdR cells exhibited enhanced methylation of CpG at the LOX core promoter region and reduced activities of the NFI binding sites and MRE, but increased activity of the ARE in a dose-dependent manner. The collective effect of Cd on the LOX promoter is trans-inhibition of the LOX gene as shown by suppression of histone H3 acetylation in the LOX core promoter region. Thus, the LOX core promoter and redox-sensitive cis-elements are key Cd targets for down-regulation of LOX relevant to mechanisms for Cd-induced emphysema and lung cancers.
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Affiliation(s)
- Jianmin Li
- The Central Lab, Hebei United University Affinity Hospital, Tangshan, Hebei, China
| | - Guang Cheng
- The Central Lab, Hebei United University Affinity Hospital, Tangshan, Hebei, China
| | - Maoguen Zheng
- The Central Lab, Hebei United University Affinity Hospital, Tangshan, Hebei, China
| | - Yinzhi Zhao
- Department of Biochemistry, Boston University School of Medicine, Boston, MA 02118, USA
| | - Jing Zhou
- Department of Biochemistry, Boston University School of Medicine, Boston, MA 02118, USA
| | - Wande Li
- Department of Biochemistry, Boston University School of Medicine, Boston, MA 02118, USA
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15
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Danilova AB, Kharchenko OA, Shevchenko KG, Grinkevich LN. Histone H3 Acetylation is Asymmetrically Induced Upon Learning in Identified Neurons of the Food Aversion Network in the Mollusk Helix Lucorum. Front Behav Neurosci 2010; 4:180. [PMID: 21151377 PMCID: PMC2996247 DOI: 10.3389/fnbeh.2010.00180] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2010] [Accepted: 11/11/2010] [Indexed: 01/26/2023] Open
Abstract
Regulation of gene expression is an essential step during long-term memory formation. Recently, the involvement of DNA-binding transcription factors and chromatin remodeling in synaptic plasticity have been intensively studied. The process of learning was shown to be associated with chromatin remodeling through histone modifications such as acetylation and phosphorylation. We have previously shown that the MAPK/ERK (mitogen-activated protein kinase/extracellular signal-regulated kinase) regulatory cascade plays a key role in the food aversion conditioning in the mollusk Helix. Specifically, command neurons of withdrawal behavior exhibit a learning-dependent asymmetry (left-right) in MAPK/ERK activation. Here, we expanded our molecular studies by focusing on a potential MAPK/ERK target - histone H3. We studied whether there is a learning-induced MAPK/ERK-dependent acetylation of histone H3 in command neurons RPa(2/3) and LPa(2/3) of the right and left parietal ganglia and whether it is asymmetrical. We found a significant learning-dependent increase in histone H3 acetylation in RPa(2/3) neurons but not in LPa(2/3) neurons. Such an increase in right command neurons depended on MAPK/ERK activation and correlated with a lateralized avoidance movement to the right visible 48 h after training. The molecular changes found in a selective set of neurons could thus represent a lateralized memory process, which may lead to consistent turning in one direction when avoiding a food that has been paired with an aversive stimulus.
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Affiliation(s)
- Alexandra B. Danilova
- Laboratory of Regulation of Function of Brain Neurons, Pavlov Institute of Physiology RASSt. Petersburg, Russia
| | - Olga A. Kharchenko
- Laboratory of Regulation of Function of Brain Neurons, Pavlov Institute of Physiology RASSt. Petersburg, Russia
| | - Konstantin G. Shevchenko
- Laboratory of Regulation of Function of Brain Neurons, Pavlov Institute of Physiology RASSt. Petersburg, Russia
| | - Larisa N. Grinkevich
- Laboratory of Regulation of Function of Brain Neurons, Pavlov Institute of Physiology RASSt. Petersburg, Russia
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