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Jung C, Nguyen NH, Cheong JJ. Transcriptional Regulation of Protein Phosphatase 2C Genes to Modulate Abscisic Acid Signaling. Int J Mol Sci 2020; 21:ijms21249517. [PMID: 33327661 PMCID: PMC7765119 DOI: 10.3390/ijms21249517] [Citation(s) in RCA: 28] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2020] [Revised: 12/04/2020] [Accepted: 12/12/2020] [Indexed: 01/04/2023] Open
Abstract
The plant hormone abscisic acid (ABA) triggers cellular tolerance responses to osmotic stress caused by drought and salinity. ABA controls the turgor pressure of guard cells in the plant epidermis, leading to stomatal closure to minimize water loss. However, stomatal apertures open to uptake CO2 for photosynthesis even under stress conditions. ABA modulates its signaling pathway via negative feedback regulation to maintain plant homeostasis. In the nuclei of guard cells, the clade A type 2C protein phosphatases (PP2Cs) counteract SnRK2 kinases by physical interaction, and thereby inhibit activation of the transcription factors that mediate ABA-responsive gene expression. Under osmotic stress conditions, PP2Cs bind to soluble ABA receptors to capture ABA and release active SnRK2s. Thus, PP2Cs function as a switch at the center of the ABA signaling network. ABA induces the expression of genes encoding repressors or activators of PP2C gene transcription. These regulators mediate the conversion of PP2C chromatins from a repressive to an active state for gene transcription. The stress-induced chromatin remodeling states of ABA-responsive genes could be memorized and transmitted to plant progeny; i.e., transgenerational epigenetic inheritance. This review focuses on the mechanism by which PP2C gene transcription modulates ABA signaling.
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Affiliation(s)
- Choonkyun Jung
- Department of International Agricultural Technology and Crop Biotechnology, Institute/Green Bio Science and Technology, Seoul National University, Pyeongchang 25354, Korea;
- Department of Plant Science, College of Agriculture and Life Sciences, Seoul National University, Seoul 08826, Korea
| | - Nguyen Hoai Nguyen
- Faculty of Biotechnology, Ho Chi Minh City Open University, Ho Chi Minh City 700000, Vietnam;
| | - Jong-Joo Cheong
- Center for Food and Bioconvergence, Seoul National University, Seoul 08826, Korea
- Correspondence: ; Tel.: +82-2-880-4888; Fax: +82-2-873-5260
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Nazmara Z, Shirinbayan P, Reza Asgari H, Ahadi R, Asgari F, Maki CB, Fattahi F, Hosseini B, Janzamin E, Koruji M. The epigenetic alterations of human sperm cells caused by heroin use disorder. Andrologia 2020; 53:e13799. [PMID: 33099803 DOI: 10.1111/and.13799] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2020] [Revised: 06/24/2020] [Accepted: 07/19/2020] [Indexed: 12/15/2022] Open
Abstract
The molecular mechanisms of drug use on sexual health are largely unknown. We investigated, the relationship between heroin use disorder and epigenetic factors influencing histone acetylation in sperm cells. The volunteers included twenty-four 20- to 50-year-old men with a normal spermogram who did not consume any drugs and twenty-four age- to BMI-matched men who consume only the drug heroin for more than last four months. HDAC1 and HDAC11 mRNA expression levels in spermatozoa and miR-34c-5p and miR-125b-5p expression levels in seminal plasma were measured. The heroin-user group showed significantly increased white blood cell counts and decreased sperm motility and survival rates (8.61 ± 1.73, 21.50 ± 3.11, 69.90 ± 4.69 respectively) as compared to the control group (1.49 ± 0.32, 38.82 ± 3.05, 87.50 ± 0.99 respectively) (p ≤ .001). An increase in DNA fragmentation index (DFI) (heroin-user group: 41.93 ± 6.59% and control group: 10.14 ± 1.43%, p = .003), a change in frequency of HDAC1 (heroin-user group: 1.69 ± 0.55 and control group: 0.45 ± 0.14, p = .045) and HDAC11 (heroin-user group: 0.29 ± 0.13 and control group: 2.36 ± 0.76, p = .019) in spermatozoa and a significant decrease in seminal miR-125b-5p abundance (heroin-user group: 0.37 ± 0.11 and control group: 1.59 ± 0.47, p = .028) were reported in heroin consumers. Heroin use can lead to male infertility by causing leukocytospermia, asthenozoospermia, DFI elevation in sperm cells and alterations in seminal RNA profile.
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Affiliation(s)
- Zohreh Nazmara
- Legal Medicine Research Center, Legal Medicine Organization, Tehran, Iran
| | - Peymaneh Shirinbayan
- Pediatric Neuro-Rehabilitation Research Center, University of Social Welfare and Rehabilitation Sciences, Tehran, Iran
| | - Hamid Reza Asgari
- Cellular and Molecular Research Center & Department of Anatomy, Iran University of Medical Sciences, Tehran, Iran
| | - Reza Ahadi
- Cellular and Molecular Research Center & Department of Anatomy, Iran University of Medical Sciences, Tehran, Iran
| | - Fatemeh Asgari
- Cellular and Molecular Research Center & Department of Anatomy, Iran University of Medical Sciences, Tehran, Iran
| | - Chad B Maki
- VetCell Therapeutics USA, Santa Ana, CA, USA
| | - Fahimeh Fattahi
- Department of Molecular Medicine, Faculty of Advanced Technologies in Medicine, Iran University of Medical Sciences, Tehran, Iran.,Student Research Committee, Iran University of Medical Sciences, Tehran, Iran
| | - Bitasadat Hosseini
- Department of Biochemistry, Iran University of Medical Sciences, Tehran, Iran
| | - Ehsan Janzamin
- Department of Stem Cell and Developmental Biology, Royan Institute, Tehran, Iran
| | - Morteza Koruji
- Cellular and Molecular Research Center & Department of Anatomy, Iran University of Medical Sciences, Tehran, Iran
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Ugur MR, Kutchy NA, de Menezes EB, Ul-Husna A, Haynes BP, Uzun A, Kaya A, Topper E, Moura A, Memili E. Retained Acetylated Histone Four in Bull Sperm Associated With Fertility. Front Vet Sci 2019; 6:223. [PMID: 31417913 PMCID: PMC6685445 DOI: 10.3389/fvets.2019.00223] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2019] [Accepted: 06/19/2019] [Indexed: 11/13/2022] Open
Abstract
Bull fertility, ability of the sperm to fertilize and activate the egg and support embryo development, is vital for cattle reproduction and production. Even though majority of histones are replaced by protamines, some histones are retained in sperm. It is known that chromatin remodeling during spermatogenesis results in dynamic changes in sperm chromatin structure through post-translational modifications (PTM) of sperm histones, which are important for regulation of gene expression. However, amounts of sperm Histone 4 (H4), its acetylated form (H4 acetyl), and to what extent these molecular attributes influence sperm chromatin structure and bull fertility are unknown. These gaps in the knowledge base are important because they are preventing advances in the fundamental science of bovine male gamete and improvement of bull fertility. The objective of this study was to test the hypothesis that expression dynamics as well as PTM of sperm H4 are associated with bull fertility. Flow cytometry was utilized to quantify H4 and H4 acetylated form in sperm from seven high and seven low fertility Holstein bulls. The results indicated that the average number of cells with H4 or H4 acetyl expression in high and low fertility bull sperm were 34.6 ± 20.4, 1.88 ± 1.8, 15.2 ± 20.8, and 1.4 ± 1.2, respectively. However, the sperm enriched in both H4 and H4 acetyl were different between high and low fertility groups (3.5 ± 0.6; 1.8 ± 0.8; P = 0.043). The localization and detection of H4 and H4 acetylation were measured by immunocytochemistry which revealed that H4 and H4 acetylation were equally distributed in the sperm head of high and low fertility sires. Western blotting results confirmed the presence of the H4 and its acetylated form in the sperm. Bioinformatics studies demonstrated that H4 is highly conserved among mammalians, and have significant gene ontology on spermatogenesis, early embryo implantation, and sperm capacitation. The results are significant because it demonstrates the replacement of canonical histone H4 into modified H4 acetylation in sperm and regulate its dynamics which is crucial for bull fertility and reproductive biotechnology. These findings advance fundamental science of mammalian early development and reproductive biotechnology.
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Affiliation(s)
- Muhammet Rasit Ugur
- Department of Animal and Dairy Sciences, Mississippi State University, Starkville, MS, United States
| | - Naseer Ahmad Kutchy
- Department of Animal and Dairy Sciences, Mississippi State University, Starkville, MS, United States.,Department of Genetics, School of Medicine, Yale University, New Haven, CT, United States
| | - Erika Bezerra de Menezes
- Department of Animal and Dairy Sciences, Mississippi State University, Starkville, MS, United States
| | - Asma Ul-Husna
- Department of Zoology, Pir Mehr Ali Shah-Arid Agriculture University, Rawalpindi, Pakistan
| | - Bethany Peyton Haynes
- Department of Animal and Dairy Sciences, Mississippi State University, Starkville, MS, United States
| | - Alper Uzun
- Warren Alpert Medical School of Brown University, Providence, RI, United States.,Department of Pediatrics, Women and Infants Hospital of Rhode Island, Providence, RI, United States.,Center for Computational Molecular Biology, Brown University, Providence, RI, United States
| | - Abdullah Kaya
- Department of Reproduction and Artificial Insemination, Selcuk University, Konya, Turkey
| | | | - Arlindo Moura
- Department of Animal Science, Federal University of Ceará, Fortaleza, Brazil
| | - Erdogan Memili
- Department of Animal and Dairy Sciences, Mississippi State University, Starkville, MS, United States
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Ma Y, Xie N, Li Y, Zhang B, Xie D, Zhang W, Li Q, Yu H, Zhang Q, Ni Y, Xie X. Teratozoospermia with amorphous sperm head associate with abnormal chromatin condensation in a Chinese family. Syst Biol Reprod Med 2018; 65:61-70. [PMID: 30452285 DOI: 10.1080/19396368.2018.1543481] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Abstract
Male infertility affects approximately 7% of the male population. In about 40% of affected patients, the etiology remains unknown. Here, we report the cases of two infertile brothers who have a uniquely prevalent sperm phenotype with completely amorphous sperm heads. To investigate the mechanisms of familial teratozoospermia with amorphous sperm heads, chromatin condensation was assessed by aniline blue staining, western blot, sperm chromatin structure assay and atomic force microscopy in both the two brothers and 40 control fertile donors. Our results showed an abnormal condensation of chromatin with amorphous headed sperm. We suggest that abnormal chromatin condensation which was induced by disturbances in the process of histone-protamine replacement may be a possible cause of familial teratozoospermia with amorphous head, and the elasticity of sperm nuclei could be a new index to assess sperm quality. Additionally, for the first time, the current study provided a new biomechanics strategy for evaluating pathological sperm contributes to our understanding of teratozoospermia.Abbreviations: SCSA: sperm chromatin structure assay; AFM: atomic force microscopy; ICSI: intracytoplasmic sperm injection; HDS: high DNA stainability; DFI: DNA fragmentation index; PBS: phosphate-buffered saline; DTT: dithiothreitol; FITC: fluorescein isothiocyanate; DAPI: 4',6-diamidino-2-pheneylindole; SSC: standard saline citrate.
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Affiliation(s)
- Ying Ma
- a Key Laboratory of Preclinical Study for New Drugs of Gansu Province , School of Basic Medical Sciences, Lanzhou University , Lanzhou , PR China
| | - Ning Xie
- b Lanzhou Municipal Center for Disease Control , Lanzhou , PR China
| | - Yi Li
- a Key Laboratory of Preclinical Study for New Drugs of Gansu Province , School of Basic Medical Sciences, Lanzhou University , Lanzhou , PR China.,c School of Stomatology Lanzhou University, Lanzhou University , Lanzhou PR China
| | - Baoping Zhang
- c School of Stomatology Lanzhou University, Lanzhou University , Lanzhou PR China.,d School of Civil Engineering and Mechanics , Lanzhou University , Lanzhou , PR China
| | - Dingxiong Xie
- e The First People's Hospital of Lanzhou City , Lanzhou , PR China
| | - Wei Zhang
- f The Reproductive Medicine Hospital of the First Hospital of Lanzhou University , Lanzhou University , Lanzhou , PR China
| | - Qiuguang Li
- g The Second People's Hospital of Lanzhou City , Lanzhou , PR China
| | - Hongmiao Yu
- a Key Laboratory of Preclinical Study for New Drugs of Gansu Province , School of Basic Medical Sciences, Lanzhou University , Lanzhou , PR China
| | - Qianjing Zhang
- h College of Life Sciences, University of Chinese Academy of Sciences , Beijing , PR China
| | - Yali Ni
- i The Institute of Reproductive Medicine Center , Gansu Provincial Maternity and Child-care Hospital , Lanzhou , PR China
| | - Xiaodong Xie
- a Key Laboratory of Preclinical Study for New Drugs of Gansu Province , School of Basic Medical Sciences, Lanzhou University , Lanzhou , PR China
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Wang T, Holt MV, Young NL. Early butyrate induced acetylation of histone H4 is proteoform specific and linked to methylation state. Epigenetics 2018; 13:519-535. [PMID: 29940793 DOI: 10.1080/15592294.2018.1475979] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022] Open
Abstract
Histone posttranslational modifications (PTMs) help regulate DNA templated processes; however, relatively little work has unbiasedly explored the single-molecule combinations of histone PTMs, their dynamics on short timescales, or how these preexisting histone PTMs modulate further histone modifying enzyme activity. We use quantitative top down proteomics to unbiasedly measure histone H4 proteoforms (single-molecule combinations of PTMs) upon butyrate treatment. Our results show that histone proteoforms change in cells within 10 minutes of application of sodium butyrate. Cells recover from treatment within 30 minutes after removal of butyrate. Surprisingly, K20me2 containing proteoforms are the near-exclusive substrate of histone acetyltransferases upon butyrate treatment. Single-molecule hierarchies of progressive PTMs mostly dictate the addition and removal of histone PTMs (K16ac > K12ac ≥ K8ac > K5ac, and the reverse on recovery). This reveals the underlying single-molecule mechanism that explains the previously reported but indistinct and unexplained patterns of H4 acetylation. Thus, preexisting histone PTMs strongly modulate histone modifying enzyme activity and this suggests that proteoform constrained reaction pathways are crucial mechanisms that enable the long-term stability of the cellular epigenetic state.
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Affiliation(s)
- Tao Wang
- a Verna & Marrs McLean Department of Biochemistry & Molecular Biology , Baylor College of Medicine , Houston , TX
| | - Matthew V Holt
- a Verna & Marrs McLean Department of Biochemistry & Molecular Biology , Baylor College of Medicine , Houston , TX
| | - Nicolas L Young
- a Verna & Marrs McLean Department of Biochemistry & Molecular Biology , Baylor College of Medicine , Houston , TX.,b Department of Molecular and Cellular Biology , Baylor College of Medicine , Houston , TX
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Almabhouh FA, Osman K, Ibrahim SF, Gupalo S, Gnanou J, Ibrahim E, Singh HJ. Melatonin ameliorates the adverse effects of leptin on sperm. Asian J Androl 2018; 19:647-654. [PMID: 27748315 PMCID: PMC5676423 DOI: 10.4103/1008-682x.183379] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Abstract
This study examined the effects of melatonin on leptin-induced changes in sperm parameters in adult rats. Five groups of Sprague-Dawley rats were treated with either leptin or leptin and melatonin or melatonin for 6 weeks. Leptin was given daily via the intraperitoneal route (60 μg kg−1 body weight) and melatonin was given in drinking water (10 mg kg−1 or 20 mg kg−1 body weight per day). Upon completion, sperm count, sperm morphology, 8-hydroxy-2-deoxyguanosine, Comet assay, TUNEL assay, gene expression profiles of antioxidant enzymes, respiratory chain reaction enzymes, DNA damage, and apoptosis genes were estimated. Data were analyzed using ANOVA. Sperm count was significantly lower whereas the fraction of sperm with abnormal morphology, the level of 8-hydroxy-2-deoxyguanosine, and sperm DNA fragmentation were significantly higher in rats treated with leptin only. Microarray analysis revealed significant upregulation of apoptosis-inducing factor, histone acetyl transferase, respiratory chain reaction enzyme, cell necrosis and DNA repair genes, and downregulation of antioxidant enzyme genes in leptin-treated rats. Real-time polymerase chain reaction showed significant decreases in glutathione peroxidase 1 expression with increases in the expression of apoptosis-inducing factor and histone acetyl transferase in leptin-treated rats. There was no change in the gene expression of caspase-3 (CASP-3). In conclusion, the adverse effects of leptin on sperm can be prevented by concurrent melatonin administration.
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Affiliation(s)
- Fayez A Almabhouh
- Faculty of Medicine, Universiti Teknologi MARA, Sg Buloh Campus, 47000 Sg Buloh, Selangor, Malaysia
| | - Khairul Osman
- Faculty of Allied Health Sciences, Universiti Kebangsaan Malaysia, Jalan Raja Muda, Kuala Lumpur, Malaysia
| | - Siti Fatimah Ibrahim
- Faculty of Allied Health Sciences, Universiti Kebangsaan Malaysia, Jalan Raja Muda, Kuala Lumpur, Malaysia
| | - Sergey Gupalo
- Faculty of Medicine, Universiti Teknologi MARA, Sg Buloh Campus, 47000 Sg Buloh, Selangor, Malaysia
| | - Justin Gnanou
- Faculty of Medicine and Defence Health, National Defence University of Malaysia, Kem Sungai Besi, 57000, Selangor, Malaysia
| | - Effendi Ibrahim
- Faculty of Medicine, Universiti Teknologi MARA, Sg Buloh Campus, 47000 Sg Buloh, Selangor, Malaysia
| | - Harbindar Jeet Singh
- Faculty of Medicine, Universiti Teknologi MARA, Sg Buloh Campus, 47000 Sg Buloh, Selangor, Malaysia.,IMMB, Faculty of Medicine, Universiti Teknologi MARA, Sg Buloh Campus, 47000 Sg Buloh, Selangor, Malaysia.,I-PPerForM, Universiti Teknologi MARA, Sg Buloh Campus, Selangor, Malaysia
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7
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Sivanandam M, Saravanan K, Kumaradhas P. Insights into intermolecular interactions, electrostatic properties and the stability of C646 in the binding pocket of p300 histone acetyltransferase enzyme: a combined molecular dynamics and charge density study. J Biomol Struct Dyn 2017; 36:3246-3264. [DOI: 10.1080/07391102.2017.1384761] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Affiliation(s)
- Magudeeswaran Sivanandam
- Laboratory of Biocrystallography and Computational Molecular Biology, Department of Physics, Periyar University, Salem 636 011, India
| | - Kandasamy Saravanan
- Laboratory of Biocrystallography and Computational Molecular Biology, Department of Physics, Periyar University, Salem 636 011, India
| | - Poomani Kumaradhas
- Laboratory of Biocrystallography and Computational Molecular Biology, Department of Physics, Periyar University, Salem 636 011, India
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Sperm-borne miR-449b influences cleavage, epigenetic reprogramming and apoptosis of SCNT embryos in bovine. Sci Rep 2017; 7:13403. [PMID: 29042680 PMCID: PMC5645405 DOI: 10.1038/s41598-017-13899-8] [Citation(s) in RCA: 30] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2017] [Accepted: 10/02/2017] [Indexed: 01/23/2023] Open
Abstract
Accumulating evidence indicates the absence of paternally derived miRNAs, piwiRNAs, and proteins may be one important factor contributing to developmental failure in somatic cell cloned embryos. In the present study, we found microRNA-449b (miR-449b) was highly expressed in sperm. Target gene predictions and experimental verification indicate that several embryonic development-related genes, including CDK6, c-MYC, HDAC1 and BCL-2, are targets of miR-449b. We therefore investigated the role of miR-449b using somatic cell nuclear transfer (SCNT) embryo model. Bovine fetal fibroblasts, expressing miR-449b through a doxycycline (dox) induced expression system were used as nuclear donor cells for SCNT. The results showed that miR-449b expression in SCNT embryos significantly enhanced the cleavage rate at 48 h after activation and the levels of H3K9 acetylation at the 2-cell to 8-cell stages, meanwhile, significantly decreased the apoptosis index of blastocysts. In addition, we verified miR-449b could regulate the expression levels of CDK6, c-MYC, HDAC1 and BCL-2. In conclusion, the present study shows that miR-449b expression improves the first cleavage division, epigenetic reprogramming and apoptotic status of bovine preimplantation cloned embryos.
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9
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Structure-based design, synthesis and in vitro antiproliferative effects studies of novel dual BRD4/HDAC inhibitors. Bioorg Med Chem Lett 2017; 27:4051-4055. [DOI: 10.1016/j.bmcl.2017.07.054] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2017] [Revised: 07/09/2017] [Accepted: 07/20/2017] [Indexed: 01/25/2023]
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10
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Almabhouh FA, Singh HJ. Adverse effects of leptin on histone-to-protamine transition during spermatogenesis are prevented by melatonin in Sprague-Dawley rats. Andrologia 2017; 50. [PMID: 28497500 DOI: 10.1111/and.12814] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 01/20/2017] [Indexed: 12/25/2022] Open
Abstract
This study examines the effect of melatonin on leptin-induced changes in transition of histone to protamine in adult rats during spermatogenesis. Twelve-week-old Sprague-Dawley rats were randomised into control, leptin-, leptin-melatonin-10-, leptin-melatonin-20- and melatonin-10-treated groups with six rats per group. Leptin was given via intraperitoneal injections (i.p.) daily for 42 days (60 μg/kg body weight). Rats in the leptin- and melatonin-treated groups were given either 10 or 20 mg day-1 kg-1 body weight of leptin in drinking water. Melatonin-10-treated group received only 10 mg of melatonin day-1 kg-1 body weight in drinking water for 42 days. Control rats received 0.1 ml of 0.9% saline. Upon completion of the treatment, sperm count, morphology and histone-to-protamine ratio were estimated. Gene expression of HAT, HDAC1, HDAC2, H2B, H2A, H1, PRM1, PRM2, TNP1 and TNP2 was determined. Data were analysed using ANOVA. Sperm count was significantly lower, whereas the fraction of spermatozoa with abnormal morphology, the ratio of histone-to-protamine transition and the expressions of HAT, HDAC1, HDAC2, H2B, H2A, H1, PRM1 were significantly higher in leptin-treated rats than those in controls or melatonin-treated rats. It appears that exogenous leptin administration adversely affects histone-to-protamine transition, which is prevented by concurrent administration of melatonin.
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Affiliation(s)
- F A Almabhouh
- Department of Biology and Biotechnology, Faculty of Science, Islamic University-Gaza, Gaza Strip, Palestine
| | - H J Singh
- Faculty of Medicine, Universiti Teknologi MARA, Sg Buloh, Selangor, Malaysia.,I-PerFForm, Universiti Teknologi MARA, Sg Buloh, Selangor, Malaysia
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Parira T, Laverde A, Agudelo M. Epigenetic Interactions between Alcohol and Cannabinergic Effects: Focus on Histone Modification and DNA Methylation. JOURNAL OF ALCOHOLISM AND DRUG DEPENDENCE 2017; 5:259. [PMID: 28730160 PMCID: PMC5515243 DOI: 10.4172/2329-6488.1000259] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
Abstract
Epigenetic studies have led to a more profound understanding of the mechanisms involved in chronic conditions. In the case of alcohol addiction, according to the National Institute on Alcohol Abuse and Alcoholism, 16 million adults suffer from Alcohol Use Disorders (AUDs). Even though therapeutic interventions like behavioral therapy and medications to prevent relapse are currently available, no robust cure exists, which stems from the lack of understanding the mechanisms of action of alcohol and the lack of development of precision medicine approaches to treat AUDs. Another common group of addictive substance, cannabinoids, have been studied extensively to reveal they work through cannabinoid receptors. Therapeutic applications have been found for the cannabinoids and a deeper understanding of the endocannabinoid system has been gained over the years. Recent reports of cannabinergic mechanisms in AUDs has opened an exciting realm of research that seeks to elucidate the molecular mechanisms of alcohol-induced end organ diseases and hopefully provide insight into new therapeutic strategies for the treatment of AUDs. To date, several epigenetic mechanisms have been associated with alcohol and cannabinoids independently. Therefore, the scope of this review is to compile the most recent literature regarding alcohol and cannabinoids in terms of a possible epigenetic connection between the endocannabinoid system and alcohol effects. First, we will provide an overview of epigenetics, followed by an overview of alcohol and epigenetic mechanisms with an emphasis on histone modifications and DNA methylations. Then, we will provide an overview of cannabinoids and epigenetic mechanisms. Lastly, we will discuss evidence of interactions between alcohol and cannabinergic pathways and possible insights into the novel epigenetic mechanisms underlying alcohol-cannabinergic pathway activity. Finalizing the review will be a discussion of future directions and therapeutic applications.
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Affiliation(s)
- Tiyash Parira
- Department of Immunology, Herbert Wertheim College of Medicine, Florida International University, FL 33199, USA
| | - Alejandra Laverde
- Department of Immunology, Herbert Wertheim College of Medicine, Florida International University, FL 33199, USA
| | - Marisela Agudelo
- Department of Immunology, Herbert Wertheim College of Medicine, Florida International University, FL 33199, USA
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Paternain L, Martisova E, Campión J, Martínez JA, Ramírez MJ, Milagro FI. Methyl donor supplementation in rats reverses the deleterious effect of maternal separation on depression-like behaviour. Behav Brain Res 2015; 299:51-8. [PMID: 26628207 DOI: 10.1016/j.bbr.2015.11.031] [Citation(s) in RCA: 44] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2015] [Revised: 11/17/2015] [Accepted: 11/21/2015] [Indexed: 12/22/2022]
Abstract
Adverse early life events are associated with altered stress responsiveness and metabolic disturbances in the adult life. Dietary methyl donor supplementation could be able to reverse the negative effects of maternal separation by affecting DNA methylation in the brain. In this study, maternal separation during lactation reduced body weight gain in the female adult offspring without affecting food intake, and altered total and HDL-cholesterol levels. Also, maternal separation induced a cognitive deficit as measured by NORT and an increase in the immobility time in the Porsolt forced swimming test, consistent with increased depression-like behaviour. An 18-week dietary supplementation with methyl donors (choline, betaine, folate and vitamin B12) from postnatal day 60 also reduced body weight without affecting food intake. Some of the deleterious effects induced by maternal separation, such as the abnormal levels of total and HDL-cholesterol, but especially the depression-like behaviour as measured by the Porsolt test, were reversed by methyl donor supplementation. Also, the administration of methyl donors increased total DNA methylation (measured by immunohistochemistry) and affected the expression of insulin receptor in the hippocampus of the adult offspring. However, no changes were observed in the DNA methylation status of insulin receptor and corticotropin-releasing hormone (CRH) promoter regions in the hypothalamus. In summary, methyl donor supplementation reversed some of the deleterious effects of an early life-induced model of depression in rats and altered the DNA methylation profile in the brain.
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Affiliation(s)
- Laura Paternain
- Department of Nutrition, Food Science and Physiology, Centre for Nutrition Research, University of Navarra, c/Irunlarrea 1, 31008 Pamplona, Spain
| | - Eva Martisova
- Department of Pharmacology and Toxicology, University of Navarra, c/Irunlarrea 1, 31008 Pamplona, Spain
| | - Javier Campión
- Department of Nutrition, Food Science and Physiology, Centre for Nutrition Research, University of Navarra, c/Irunlarrea 1, 31008 Pamplona, Spain; CIBERobn, Centro de Investigación Biomédica en Red de la Fisiopatología de la Obesidad y Nutrición, Carlos III Health Institute, Madrid, Spain
| | - J Alfredo Martínez
- Department of Nutrition, Food Science and Physiology, Centre for Nutrition Research, University of Navarra, c/Irunlarrea 1, 31008 Pamplona, Spain; CIBERobn, Centro de Investigación Biomédica en Red de la Fisiopatología de la Obesidad y Nutrición, Carlos III Health Institute, Madrid, Spain; IDISNA, Navarra's Health Research Institute, Pamplona, Spain
| | - Maria J Ramírez
- Department of Pharmacology and Toxicology, University of Navarra, c/Irunlarrea 1, 31008 Pamplona, Spain; IDISNA, Navarra's Health Research Institute, Pamplona, Spain.
| | - Fermin I Milagro
- Department of Nutrition, Food Science and Physiology, Centre for Nutrition Research, University of Navarra, c/Irunlarrea 1, 31008 Pamplona, Spain; CIBERobn, Centro de Investigación Biomédica en Red de la Fisiopatología de la Obesidad y Nutrición, Carlos III Health Institute, Madrid, Spain
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Briguglio I, Piras S, Corona P, Gavini E, Nieddu M, Boatto G, Carta A. Benzotriazole: An overview on its versatile biological behavior. Eur J Med Chem 2015; 97:612-48. [PMID: 25293580 PMCID: PMC7115563 DOI: 10.1016/j.ejmech.2014.09.089] [Citation(s) in RCA: 105] [Impact Index Per Article: 11.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2014] [Revised: 09/25/2014] [Accepted: 09/28/2014] [Indexed: 12/13/2022]
Abstract
Discovered in late 1960, azoles are heterocyclic compounds class which constitute the largest group of available antifungal drugs. Particularly, the imidazole ring is the chemical component that confers activity to azoles. Triazoles are obtained by a slight modification of this ring and similar or improved activities as well as less adverse effects are reported for triazole derivatives. Consequently, it is not surprising that benzimidazole/benzotriazole derivatives have been found to be biologically active. Since benzimidazole has been widely investigated, this review is focused on defining the place of benzotriazole derivatives in biomedical research, highlighting their versatile biological properties, the mode of action and Structure Activity Relationship (SAR) studies for a variety of antimicrobial, antiparasitic, and even antitumor, choleretic, cholesterol-lowering agents.
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Affiliation(s)
- I Briguglio
- Department of Chemistry and Pharmacy, University of Sassari, Via Muroni 23/A, 07100 Sassari, Italy
| | - S Piras
- Department of Chemistry and Pharmacy, University of Sassari, Via Muroni 23/A, 07100 Sassari, Italy
| | - P Corona
- Department of Chemistry and Pharmacy, University of Sassari, Via Muroni 23/A, 07100 Sassari, Italy
| | - E Gavini
- Department of Chemistry and Pharmacy, University of Sassari, Via Muroni 23/A, 07100 Sassari, Italy
| | - M Nieddu
- Department of Chemistry and Pharmacy, University of Sassari, Via Muroni 23/A, 07100 Sassari, Italy
| | - G Boatto
- Department of Chemistry and Pharmacy, University of Sassari, Via Muroni 23/A, 07100 Sassari, Italy
| | - A Carta
- Department of Chemistry and Pharmacy, University of Sassari, Via Muroni 23/A, 07100 Sassari, Italy.
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Kim J, Kim JH, Jee BC, Suh CS, Kim SH. Is There a Link Between Expression Levels of Histone Deacetylase/Acetyltransferase in Mouse Sperm and Subsequent Blastocyst Development? Reprod Sci 2015; 22:1387-92. [PMID: 25868580 DOI: 10.1177/1933719115580997] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Histone acetylation has been known to be significant in spermatogenesis. Histone acetylation is regulated by the act of histone deacetylases (HDACs) and histone acetyltransferases (HATs). We investigated the link between expression levels of HDACs and HATs in mouse sperm and subsequent blastocyst formation rate. In the univariate analysis, expression levels of HDAC1 and HAT were generally not associated with the blastocyst formation rate. When divided by the mature oocyte number category, a significant positive association was observed between the expression levels of HDAC1 and the blastocyst-forming rate in the highest (> 75th) percentile group (a group with ≥34 mature oocytes). In conclusion, expression of sperm HDAC1 could be considered as a possible predictor of embryo development in mice with high ovarian response.
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Affiliation(s)
- Jayeon Kim
- Department of Obstetrics and Gynecology, Cha Gangnam Hospital, Cha University, Seoul, South Korea Department of Obstetrics and Gynecology, Seoul National University College of Medicine, Seoul, South Korea
| | - Ji-Hee Kim
- Department of Obstetrics and Gynecology, Seoul National University Bundang Hospital, Bundang, South Korea
| | - Byung-Chul Jee
- Department of Obstetrics and Gynecology, Seoul National University College of Medicine, Seoul, South Korea Department of Obstetrics and Gynecology, Seoul National University Hospital, Seoul, South Korea
| | - Chang-Suk Suh
- Department of Obstetrics and Gynecology, Seoul National University College of Medicine, Seoul, South Korea Department of Obstetrics and Gynecology, Seoul National University Hospital, Seoul, South Korea
| | - Seok-Hyun Kim
- Department of Obstetrics and Gynecology, Seoul National University College of Medicine, Seoul, South Korea Department of Obstetrics and Gynecology, Seoul National University Bundang Hospital, Bundang, South Korea
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15
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Kang H, Park YS, Cho DH, Kim JS, Oh JS. Dynamics of histone H3 phosphorylation at threonine 3 during meiotic maturation in mouse oocytes. Biochem Biophys Res Commun 2015; 458:280-6. [PMID: 25645018 DOI: 10.1016/j.bbrc.2015.01.099] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2015] [Accepted: 01/21/2015] [Indexed: 11/18/2022]
Abstract
Various histone residues are post-translationally modified during the cell cycle. Among these, histone H3 phosphorylation at threonine 3 (H3T3ph) is newly characterized and has been considered to be crucial for chromosome dynamics during mitosis. However, little is known about the role of H3T3ph during mouse oocyte maturation. In the present study, we examined H3T3ph expression and localization during oocyte meiosis. Our results showed that H3T3ph was tightly associated with condensed chromosomes during meiotic maturation. H3T3ph along the chromosome arms was dissociated at anaphase/telophase I, but centromeric H3T3ph remained intact. Moreover, the inhibition of H3T3ph with the small molecule inhibitors CHR-6494 and 5-Itu impaired segregation of homologous chromosomes during meiosis. Partial inhibition of H3T3ph revealed that centromeric Aurora B/C kinase is sufficient to complete meiosis I, but Aurora B/C kinase along the chromosome arms is required to ensure accurate homologous chromosome segregation. Therefore, our results demonstrate that H3T3ph is a universal regulator of chromosome dynamics during oocyte meiosis and mitosis.
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Affiliation(s)
- Hyoeun Kang
- Department of Genetic Engineering, College of Biotechnology and Bioengineering, Sungkyunkwan University, Suwon, South Korea
| | - Yong Seok Park
- Department of Genetic Engineering, College of Biotechnology and Bioengineering, Sungkyunkwan University, Suwon, South Korea
| | - Dong-Hyung Cho
- Department of East-West Medical Science, Graduate School of East-West Medical Science, Kyung Hee University, Yongin 446-701, South Korea
| | - Jae-Sung Kim
- Division of Radiation Cancer Research, Korea Institute of Radiological and Medical Sciences, Seoul, South Korea.
| | - Jeong Su Oh
- Department of Genetic Engineering, College of Biotechnology and Bioengineering, Sungkyunkwan University, Suwon, South Korea.
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16
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Kim JH, Jee BC, Lee JM, Suh CS, Kim SH. Histone acetylation level and histone acetyltransferase/deacetylase activity in ejaculated sperm from normozoospermic men. Yonsei Med J 2014; 55:1333-40. [PMID: 25048493 PMCID: PMC4108820 DOI: 10.3349/ymj.2014.55.5.1333] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/05/2023] Open
Abstract
PURPOSE The aim of this work was to evaluate nuclear histone acetylation level and total histone acetyltransferase (HAT) and deacetylase (HDAC) activity in ejaculated sperm and their relevance to conventional sperm parameters. MATERIALS AND METHODS Thirty-three normozoospermic men were included in this study. Semen samples were processed by swim-up and then immunostained by six acetylation antibodies (H3K9ac, H3K14ac, H4K5ac, H4K8ac, H4K12ac, and H4K16ac). Our preliminary study verified the expression of HAT/HDAC1 in mature human sperm. From vitrified-warmed sperm samples, total HAT/HDAC activity was measured by commercially available kits. Nuclear DNA integrity was also measured by TUNEL assay. RESULTS The levels of six acetylation marks were not related with conventional sperm parameters including sperm DNA fragmentation index (DFI) as well as HAT/HDAC activity. However, sperm DFI was positively correlated with HAT activity (r=0.038 after adjustment, p<0.02). HAT activity showed a negative relationship with HDAC activity (r=-0.51, p<0.01). Strict morphology was negatively correlated with acetylation enzyme index (=HAT activity/HDAC activity) (r=-0.53, p<0.01). CONCLUSION Our works demonstrated a significant relationship of acetylation-associated enzyme activity and strict morphology or sperm DFI.
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Affiliation(s)
- Jee Hyun Kim
- Department of Obstetrics and Gynecology, Seoul National University Bundang Hospital, Seongnam, Korea. ; Department of Obstetrics and Gynecology, Seoul National University College of Medicine, Seoul, Korea
| | - Byung Chul Jee
- Department of Obstetrics and Gynecology, Seoul National University Bundang Hospital, Seongnam, Korea. ; Department of Obstetrics and Gynecology, Seoul National University College of Medicine, Seoul, Korea
| | - Jang Mi Lee
- Department of Obstetrics and Gynecology, Seoul National University Bundang Hospital, Seongnam, Korea
| | - Chang Suk Suh
- Department of Obstetrics and Gynecology, Seoul National University Bundang Hospital, Seongnam, Korea. ; Department of Obstetrics and Gynecology, Seoul National University College of Medicine, Seoul, Korea
| | - Seok Hyun Kim
- Department of Obstetrics and Gynecology, Seoul National University College of Medicine, Seoul, Korea. ; Department of Obstetrics and Gynecology, Seoul National University Hospital, Seoul, Korea
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Lenoci A, Tomassi S, Conte M, Benedetti R, Rodriguez V, Carradori S, Secci D, Castellano S, Sbardella G, Filetici P, Novellino E, Altucci L, Rotili D, Mai A. Quinoline-based p300 histone acetyltransferase inhibitors with pro-apoptotic activity in human leukemia U937 cells. ChemMedChem 2014; 9:542-8. [PMID: 24504685 DOI: 10.1002/cmdc.201300536] [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] [Received: 12/17/2013] [Indexed: 01/27/2023]
Abstract
Chemical manipulations performed on 2-methyl-3-carbethoxyquinoline (1), a histone acetyltransferase inhibitor previously identified by our research group and active at the sub-millimolar/millimolar level, led to compounds bearing higher alkyl groups at the C2-quinoline or additional side chains at the C6-quinoline positions. Such compounds displayed at least threefold improved inhibitory potency toward p300 protein lysine acetyltransferase activity; some of them decreased histone H3 and H4 acetylation levels in U937 cells and induced high degrees of apoptosis (three compounds >10-fold higher than compound 1) after treatment of U937 cells.
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Affiliation(s)
- Alessia Lenoci
- Department of Drug Chemistry & Technologies, Sapienza University of Rome, P.le Aldo Moro 5, 00185 Rome (Italy)
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Abstract
A number of pharmacological agents are currently available for the induction of the fetal hemoglobin (Hb F) to treat the patients with sickle cell disease and beta-thalassemia. In the present review, we summarized the investigation and development of these Hb F-inducing agents and introduced histone deacetylase inhibitors as the new strategy to induce Hb F to treat the hemoglobin disorders
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Affiliation(s)
- Hua Cao
- Division of Medical Genetics, University of Washington, Seattle 98195, USA.
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Okanishi H, Kim K, Masui R, Kuramitsu S. Acetylome with structural mapping reveals the significance of lysine acetylation in Thermus thermophilus. J Proteome Res 2013; 12:3952-68. [PMID: 23901841 DOI: 10.1021/pr400245k] [Citation(s) in RCA: 83] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
Lysine acetylation in proteins has recently been globally identified in bacteria and eukaryotes. Even though acetylproteins are known to be involved in various cellular processes, its physiological significance has not yet been resolved. Using a proteomics approach in combination with immunoprecipitation, we identified 197 lysine acetylation sites and 4 N-terminal acetylation sites from 128 proteins in Thermus thermophilus HB8, an extremely thermophilic eubacterium. Our analyses revealed that identified acetylproteins are well conserved across all three domains of life and are mainly involved in central metabolism and translation. To characterize the functional significance further, we successfully mapped 172 acetylation sites on their 59 authentic and 54 homologous protein structures. Although the percentage of acetylation on ordered structures was higher than that of the disordered structure, no tendency of acetylation in T. thermophilus was detected in secondary structures. However, the acetylated lysine was situated near the negatively charged glutamic acid residues. In tertiary structure analyses, 58 sites of 103 acetylations mapped on 59 authentic structures of T. thermophilus were located within a considerable distance that can disrupt electrostatic interactions and hydrogen bonding networks on protein surfaces, demonstrating the physiological significance of the acetylation that can directly alter the protein structure. In addition, we found 16 acetylation sites related to Schiff base formation, ligand binding, and protein-RNA and protein-protein interactions that involve the potential function of the proteins. The structural mapping of acetylation sites provides new molecular insight into the role of lysine acetylation in the proteins.
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Affiliation(s)
- Hiroki Okanishi
- Department of Biological Sciences, Graduate School of Science, Osaka University, 1-1 Machikaneyama-cho, Toyonaka, Osaka 560-0043, Japan
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20
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Henry RA, Kuo YM, Andrews AJ. Differences in specificity and selectivity between CBP and p300 acetylation of histone H3 and H3/H4. Biochemistry 2013; 52:5746-59. [PMID: 23862699 PMCID: PMC3756530 DOI: 10.1021/bi400684q] [Citation(s) in RCA: 118] [Impact Index Per Article: 10.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Abstract
![]()
Although
p300 and CBP lysine acetyltransferases are often treated
interchangeably, the inability of one enzyme to compensate for the
loss of the other suggests unique roles for each. As these deficiencies
coincide with aberrant levels of histone acetylation, we hypothesized
that the key difference between p300 and CBP activity is differences
in their specificity/selectivity for lysines within the histones.
Utilizing a label-free, quantitative mass spectrometry based technique,
we determined the kinetic parameters of both CBP and p300 at each
lysine of H3 and H4, under conditions we would expect to encounter
in the cell (either limiting acetyl-CoA or histone). Our results show
that while p300 and CBP acetylate many common residues on H3 and H4,
they do in fact possess very different specificities, and these specificities
are dependent on whether histone or acetyl-CoA is limiting. Steady-state
experiments with limiting H3 demonstrate that both CBP and p300 acetylate
H3K14, H3K18, H3K23, with p300 having specificities up to 1010-fold higher than CBP. Utilizing tetramer as a substrate, both enzymes
also acetylate H4K5, H4K8, H4K12, and H4K16. With limiting tetramer,
CBP displays higher specificities, especially at H3K18, where CBP
specificity is 1032-fold higher than p300. With limiting
acetyl-CoA, p300 has the highest specificity at H4K16, where specificity
is 1018-fold higher than CBP. This discovery of unique
specificity for targets of CBP- vs p300-mediated acetylation of histone
lysine residues presents a new model for understanding their respective
biological roles and possibly an opportunity for selective therapeutic
intervention.
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Affiliation(s)
- Ryan A Henry
- Department of Cancer Biology, Fox Chase Cancer Center, Philadelphia, Pennsylvania, United States
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21
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Zhang Z, Hao C, Wang L, Liu P, Zhao L, Zhu C, Tian X. Inhibition of leukemic cells by valproic acid, an HDAC inhibitor, in xenograft tumors. Onco Targets Ther 2013; 6:733-40. [PMID: 23836985 PMCID: PMC3699303 DOI: 10.2147/ott.s46135] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023] Open
Abstract
The chimeric fusion protein, AML1-ETO, generated by translocation of t(8;21), abnormally recruits histone deacetylase (HDAC) to the promoters of AML1 target genes, resulting in transcriptional repression of the target genes and development of t(8;21) acute myeloid leukemia. Abnormal expression of cyclin-dependent kinase inhibitors, especially p21, is considered a possible mechanism of the arrested maturation and differentiation seen in leukemia cells. A new generation of HDAC inhibitors is becoming an increasing focus of attention for their ability to induce differentiation and apoptosis in tumor cells and to block the cell cycle. Our previous research had demonstrated that valproic acid induces G0/G1 arrest of Kasumi-1 cells in t(8;21) acute myeloid leukemia. In this study, we further confirmed that valproic acid inhibits the growth of Kasumi-1 cells in a murine xenograft tumor model, and that this occurs via upregulation of histone acetylation in the p21 promoter region, enhancement of p21 expression, suppression of phosphorylation of retinoblastoma protein, blocking of transcription activated by E2F, and induction of G0/G1 arrest.
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Affiliation(s)
- Zhihua Zhang
- Hematology Department, Affiliated Hospital of Chengde Medical College, Chengde, Hebei Province, People's Republic of China
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Dynamics of modeled oligonucleosomes and the role of histone variant proteins in nucleosome organization. ADVANCES IN PROTEIN CHEMISTRY AND STRUCTURAL BIOLOGY 2013; 90:119-49. [PMID: 23582203 DOI: 10.1016/b978-0-12-410523-2.00004-3] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Abstract
Elucidation of the structural dynamics of a nucleosome is of primary importance for understanding the molecular mechanisms that control the nucleosomal positioning. The presence of variant histone proteins in the nucleosome core raises the functional diversity of the nucleosomes in gene regulation and has the profound epigenetic consequences of great importance for understanding the fundamental issues like the assembly of variant nucleosomes, chromatin remodeling, histone posttranslational modifications, etc. Here, we report our observation of the dominant mechanisms of relaxation motions of the oligonucleosomes such as dimer, trimer, and tetramer (in the beads on a string model) with conventional core histones and role of variant histone H2A.Z in the chromatin dynamics using normal mode analysis. Analysis of the directionality of the global dynamics of the oligonucleosome reveals (i) the in-planar stretching as well as out-of-planar bending motions as the relaxation mechanisms of the oligonucleosome and (ii) the freedom of the individual nucleosome in expressing the combination of the above-mentioned motions as the global mode of dynamics. The highly dynamic N-termini of H3 and (H2A.Z-H2B) dimer evidence their participation in the transcriptionally active state. The key role of variant H2A.Z histone as a major source of vibrant motions via weaker intra- and intermolecular correlations is emphasized in this chapter.
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23
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Design, synthesis and bioevalution of novel benzamides derivatives as HDAC inhibitors. Bioorg Med Chem Lett 2013. [DOI: 10.1016/j.bmcl.2012.10.114] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
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Pharmacokinetics and tissue distribution of psammaplin A, a novel anticancer agent, in mice. Arch Pharm Res 2012; 35:1849-54. [PMID: 23139138 DOI: 10.1007/s12272-012-1019-5] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2012] [Revised: 08/30/2012] [Accepted: 09/10/2012] [Indexed: 10/27/2022]
Abstract
This study reports the pharmacokinetics and tissue distribution of a novel histone deacetylase and DNA methyltransferase inhibitor, psammaplin A (PsA), in mice. PsA concentrations were determined by a validated LC-MS/MS assay method (LLOQ 2 ng/mL). Following intravenous injection at a dose of 10 mg/kg in mice, PsA was rapidly eliminated, with the average half-life (t(1/2, λn)) of 9.9 ± 1.4 min and the systemic clearance (CL(s)) of 925.1 ± 570.1 mL/min. The in vitro stability of PsA was determined in different tissue homogenates. The average degradation t(1/2) of PsA in blood, liver, kidney and lung was found relatively short (≤ 12.8 min). Concerning the in vivo tissue distribution characteristics, PsA was found to be highly distributed to lung tissues, with the lung-to-serum partition coefficients (K(p)) ranging from 49.9 to 60.2. In contrast, PsA concentrations in other tissues were either comparable with or less than serum concentrations. The high and specific lung targeting characteristics indicates that PsA has the potential to be developed as a lung cancer treatment agent.
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Carafa V, Miceli M, Altucci L, Nebbioso A. Histone deacetylase inhibitors: a patent review (2009 - 2011). Expert Opin Ther Pat 2012; 23:1-17. [PMID: 23094822 DOI: 10.1517/13543776.2013.736493] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
INTRODUCTION Given the involvement of histone deacetylases (HDACs) in regulation of gene expression, they are believed to be 'master regulators' of many diseases. Thus, HDAC inhibitors (HDACis) are able to modulate transcriptional activity. These molecules can induce cell cycle arrest, differentiation and apoptosis of tumor cells in culture and in animal models and therefore are emerging as an exciting new class of potential anti-cancer agents for the treatment of solid and hematological malignancies. AREAS COVERED The aim of this review is to provide an overview of current knowledge and molecular mechanisms of HDACis, and the most recent patents existing in the field of HDACis from 2009 until 2011. EXPERT OPINION In recent years, an increasing number of structurally diverse HDACis have been identified. In addition, non-cancer diseases, including neurodegeneration, metabolic, inflammatory and autoimmune disorders, infectious and cardiovascular diseases have also been proposed for an HDACi treatment. The growing body of evidence of the potential benefits of disease treatment based on the use of HDACis has led to a large number of patent applications throughout the world.
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Affiliation(s)
- Vincenzo Carafa
- Seconda Università degli Studi di Napoli, Dipartimento di Patologia Generale, Italy
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26
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Mazzio EA, Soliman KFA. Basic concepts of epigenetics: impact of environmental signals on gene expression. Epigenetics 2012; 7:119-30. [PMID: 22395460 DOI: 10.4161/epi.7.2.18764] [Citation(s) in RCA: 151] [Impact Index Per Article: 12.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022] Open
Abstract
Through epigenetic modifications, specific long-term phenotypic consequences can arise from environmental influence on slowly evolving genomic DNA. Heritable epigenetic information regulates nucleosomal arrangement around DNA and determines patterns of gene silencing or active transcription. One of the greatest challenges in the study of epigenetics as it relates to disease is the enormous diversity of proteins, histone modifications and DNA methylation patterns associated with each unique maladaptive phenotype. This is further complicated by a limitless combination of environmental cues that could alter the epigenome of specific cell types, tissues, organs and systems. In addition, complexities arise from the interpretation of studies describing analogous but not identical processes in flies, plants, worms, yeast, ciliated protozoans, tumor cells and mammals. This review integrates fundamental basic concepts of epigenetics with specific focus on how the epigenetic machinery interacts and operates in continuity to silence or activate gene expression. Topics covered include the connection between DNA methylation, methyl-CpG-binding proteins, transcriptional repression complexes, histone residues, histone modifications that mediate gene repression or relaxation, histone core variant stability, H1 histone linker flexibility, FACT complex, nucleosomal remodeling complexes, HP1 and nuclear lamins.
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Affiliation(s)
- Elizabeth A Mazzio
- College of Pharmacy and Pharmaceutical Sciences, Florida A & M University, Tallahassee, FL USA
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27
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Kim MG, Pak JH, Choi WH, Park JY, Nam JH, Kim JH. The relationship between cisplatin resistance and histone deacetylase isoform overexpression in epithelial ovarian cancer cell lines. J Gynecol Oncol 2012; 23:182-9. [PMID: 22808361 PMCID: PMC3395014 DOI: 10.3802/jgo.2012.23.3.182] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2011] [Revised: 03/06/2012] [Accepted: 03/24/2012] [Indexed: 12/15/2022] Open
Abstract
Objective To investigate the relationship between cisplatin resistance and histone deacetylase (HDAC) isoform overexpression in ovarian cancer cell lines. Methods Expression of four HDAC isoforms (HDAC 1, 2, 3, and 4) in two ovarian cancer cell lines, SKOV3 and OVCAR3, exposed to various concentrations of cisplatin was examined by western blot analyses. Cells were transfected with plasmid DNA of each HDAC. The overexpression of protein and mRNA of each HDAC was confirmed by western blot and reverse transcriptase-polymerase chain reaction analyses, respectively. The cell viability of the SKOV3 and OVCAR3 cells transfected with HDAC plasmid DNA was measured using the cell counting kit-8 assay after treatment with cisplatin. Results The 50% inhibitory concentration of the SKOV3 and OVCAR3 cells can be determined 15-24 hours after treatment with 15 µg/mL cisplatin. The expression level of acetylated histone 3 protein in SKOV3 cells increased after exposure to cisplatin. Compared with control cells at 24 hours after cisplatin exposure, the viability of SKOV3 cells overexpressing HDAC 1 and 3 increased by 15% and 13% (p<0.05), respectively. On the other hand, OVCAR3 cells that overexpressed HDAC 2 and 4 exhibited increased cell viability by 23% and 20% (p<0.05), respectively, compared with control cells 24 hours after exposure to cisplatin. Conclusion In SKOV3 and OVCAR3 epithelial ovarian cancer cell lines, the correlation between HDAC overexpression and cisplatin resistance was confirmed. However, the specific HDAC isoform associated with resistance to cisplatin varied depending on the ovarian cancer cell line. These results may suggest that each HDAC isoform conveys cisplatin resistance via different mechanisms.
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Affiliation(s)
- Min-Gyun Kim
- Department of Obstetrics and Gynecology, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Korea
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28
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Role of Histone Deacetylase Inhibitors in the Treatment of Lymphomas and Multiple Myeloma. Hematol Oncol Clin North Am 2012; 26:671-704, ix. [DOI: 10.1016/j.hoc.2012.01.006] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
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29
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Steilmann C, Paradowska A, Bartkuhn M, Vieweg M, Schuppe HC, Bergmann M, Kliesch S, Weidner W, Steger K. Presence of histone H3 acetylated at lysine 9 in male germ cells and its distribution pattern in the genome of human spermatozoa. Reprod Fertil Dev 2012; 23:997-1011. [PMID: 22127005 DOI: 10.1071/rd10197] [Citation(s) in RCA: 40] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2010] [Accepted: 05/04/2011] [Indexed: 12/28/2022] Open
Abstract
During spermatogenesis, approximately 85% of histones are replaced by protamines. The remaining histones have been proposed to carry essential marks for the establishment of epigenetic information in the offspring. The aim of the present study was to analyse the expression pattern of histone H3 acetylated at lysine 9 (H3K9ac) during normal and impaired spermatogenesis and the binding pattern of H3K9ac to selected genes within ejaculates. Testicular biopsies, as well as semen samples, were used for immunohistochemistry. Chromatin immunoprecipitation was performed with ejaculated sperm chromatin. HeLa cells and prostate tissue served as controls. Binding of selected genes was evaluated by semiquantitative and real-time polymerase chain reaction. Immunohistochemistry of H3K9ac demonstrated positive signals in spermatogonia, spermatocytes, elongating spermatids and ejaculated spermatozoa of fertile and infertile men. H3K9ac was associated with gene promoters (CRAT, G6PD, MCF2L), exons (SOX2, GAPDH, STK11IP, FLNA, PLXNA3, SH3GLB2, CTSD) and intergenic regions (TH) in fertile men and revealed shifts of the distribution pattern in ejaculated spermatozoa of infertile men. In conclusion, H3K9ac is present in male germ cells and may play a role during the development of human spermatozoa. In addition, H3K9ac is associated with specific regions of the sperm genome defining an epigenetic code that may influence gene expression directly after fertilisation.
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Affiliation(s)
- C Steilmann
- Department of Urology, Pediatric Urology and Andrology, Justus-Liebig University of Giessen, Rudolf Buchheim Str. 7, 35385 Giessen, Germany
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Vijayakumar B, Umamaheswari A, Puratchikody A, Velmurugan D. Selection of an improved HDAC8 inhibitor through structure-based drug design. Bioinformation 2011; 7:134-41. [PMID: 22125384 PMCID: PMC3218316 DOI: 10.6026/97320630007134] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2011] [Accepted: 09/14/2011] [Indexed: 01/05/2023] Open
Abstract
Histone deacetylases (HDACs) are enzymes, which catalyze the removal of acetyl moiety from acetyl-lysine within the histone proteins and promote gene repression and silencing resulting in several types of cancer. HDACs are important therapeutic targets for the treatment of cancer and related diseases. Hydroxamic acid inhibitors show promising results in clinical trials against carcinogenesis. 120 hydroxamic acid derivatives were designed as inhibitors based on hydrophobic pocket and the Zn (II) catalytic site of HDAC8 active site using Structure Based Drug Design (SBDD) approach. High Throughput Virtual screening (HTVs) was used to filter the effective inhibitors. Induced Fit Docking (IFD) studies were carried out for the screening of eight inhibitors using Glide software. Hydrogen bond, hydrophobic interactions and octahedral coordination geometry with Zn (II) were observed in the IFD complexes. Prime MM-GBSA calculation was carried out for the binding free energy, to observe the stability of docked complexes. The Lipinski's rule of five was analyzed for ADME/Tox drug likeliness using Qikprop simulation. These inhibitors have good inhibitory properties as they have favorable docking score, energy, emodel, hydrogen bond and hydrophobic interactions, binding free energy and ADME/Tox. However, one compound (Cmp22) successively satisfied all the studies among the eight compounds screened and seems to be a promising potent inhibitor against HDAC8.
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Affiliation(s)
- Balakrishnan Vijayakumar
- Centre of Advanced Study in Crystallography and Biophysics, University of Madras, Guindy campus, Chennai 600 025, India
| | - Appavoo Umamaheswari
- Department of Pharmaceutical Technology, Anna University of Technology, Tiruchirappalli 620 024, India
| | - Ayarivan Puratchikody
- Department of Pharmaceutical Technology, Anna University of Technology, Tiruchirappalli 620 024, India
| | - Devadasan Velmurugan
- Centre of Advanced Study in Crystallography and Biophysics, University of Madras, Guindy campus, Chennai 600 025, India
- Bioinformatics Infrastructure Facility (BIF), University of Madras, Guindy campus, Chennai 600 025, India
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Synthesis and evaluation of aliphatic-chain hydroxamates capped with osthole derivatives as histone deacetylase inhibitors. Eur J Med Chem 2011; 46:4042-9. [DOI: 10.1016/j.ejmech.2011.06.002] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2011] [Revised: 05/07/2011] [Accepted: 06/01/2011] [Indexed: 11/23/2022]
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Chun PS, Kim WH, Kim JS, Kang JA, Lee HJ, Park JY, Ahn MY, Kim HS, Moon HR. Synthesis and Importance of Bulky Aromatic Cap of Novel SAHA Analogs for HDAC Inhibition and Anticancer Activity. B KOREAN CHEM SOC 2011. [DOI: 10.5012/bkcs.2011.32.6.1891] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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Albaugh BN, Arnold KM, Lee S, Denu JM. Autoacetylation of the histone acetyltransferase Rtt109. J Biol Chem 2011; 286:24694-701. [PMID: 21606491 DOI: 10.1074/jbc.m111.251579] [Citation(s) in RCA: 55] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023] Open
Abstract
Rtt109 is a yeast histone acetyltransferase (HAT) that associates with histone chaperones Asf1 and Vps75 to acetylate H3K56, H3K9, and H3K27 and is important in DNA replication and maintaining genomic integrity. Recently, mass spectrometry and structural studies of Rtt109 have shown that active site residue Lys-290 is acetylated. However, the functional role of this modification and how the acetyl group is added to Lys-290 was unclear. Here, we examined the mechanism of Lys-290 acetylation and found that Rtt109 catalyzes intramolecular autoacetylation of Lys-290 ∼200-times slower than H3 acetylation. Deacetylated Rtt109 was prepared by reacting with a sirtuin protein deacetylase, producing an enzyme with negligible HAT activity. Autoacetylation of Rtt109 restored full HAT activity, indicating that autoacetylation is necessary for HAT activity and is a fully reversible process. To dissect the mechanism of activation, biochemical, and kinetic analyses were performed with Lys-290 variants of the Rtt109-Vps75 complex. We found that autoacetylation of Lys-290 increases the binding affinity for acetyl-CoA and enhances the rate of acetyl-transfer onto histone substrates. This study represents the first detailed investigation of a HAT enzyme regulated by single-site intramolecular autoacetylation.
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Affiliation(s)
- Brittany N Albaugh
- Department of Biomolecular Chemistry, University of Wisconsin-Madison, Madison, Wisconsin 53715, USA
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Patel J, Pathak RR, Mujtaba S. The biology of lysine acetylation integrates transcriptional programming and metabolism. Nutr Metab (Lond) 2011; 8:12. [PMID: 21371315 PMCID: PMC3060110 DOI: 10.1186/1743-7075-8-12] [Citation(s) in RCA: 47] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2010] [Accepted: 03/03/2011] [Indexed: 11/18/2022] Open
Abstract
The biochemical landscape of lysine acetylation has expanded from a small number of proteins in the nucleus to a multitude of proteins in the cytoplasm. Since the first report confirming acetylation of the tumor suppressor protein p53 by a lysine acetyltransferase (KAT), there has been a surge in the identification of new, non-histone targets of KATs. Added to the known substrates of KATs are metabolic enzymes, cytoskeletal proteins, molecular chaperones, ribosomal proteins and nuclear import factors. Emerging studies demonstrate that no fewer than 2000 proteins in any particular cell type may undergo lysine acetylation. As described in this review, our analyses of cellular acetylated proteins using DAVID 6.7 bioinformatics resources have facilitated organization of acetylated proteins into functional clusters integral to cell signaling, the stress response, proteolysis, apoptosis, metabolism, and neuronal development. In addition, these clusters also depict association of acetylated proteins with human diseases. These findings not only support lysine acetylation as a widespread cellular phenomenon, but also impel questions to clarify the underlying molecular and cellular mechanisms governing target selectivity by KATs. Present challenges are to understand the molecular basis for the overlapping roles of KAT-containing co-activators, to differentiate between global versus dynamic acetylation marks, and to elucidate the physiological roles of acetylated proteins in biochemical pathways. In addition to discussing the cellular 'acetylome', a focus of this work is to present the widespread and dynamic nature of lysine acetylation and highlight the nexus that exists between epigenetic-directed transcriptional regulation and metabolism.
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Affiliation(s)
- Jigneshkumar Patel
- Department of Structural and Chemical Biology, Mount Sinai School of Medicine New York, NY 10029 USA.
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Physical and functional HAT/HDAC interplay regulates protein acetylation balance. J Biomed Biotechnol 2010; 2011:371832. [PMID: 21151613 PMCID: PMC2997516 DOI: 10.1155/2011/371832] [Citation(s) in RCA: 236] [Impact Index Per Article: 16.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2010] [Revised: 10/01/2010] [Accepted: 10/27/2010] [Indexed: 01/18/2023] Open
Abstract
The balance between protein acetylation and deacetylation controls several physiological and pathological cellular processes, and the enzymes involved in the maintenance of this equilibrium—acetyltransferases (HATs) and deacetylases (HDACs)—have been widely studied. Presently, the evidences obtained in this field suggest that the dynamic acetylation equilibrium is mostly maintained through the physical and functional interplay between HAT and HDAC activities. This model overcomes the classical vision in which the epigenetic marks of acetylation have only an activating function whereas deacetylation marks have a repressing activity. Given the existence of several players involved in the preservation of this equilibrium, the identification of these complex networks of interacting proteins will likely foster our understanding of how cells regulate intracellular processes and respond to the extracellular environment and will offer the rationale for new therapeutic approaches based on epigenetic drugs in human diseases.
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Fu J, Yang Y, Zhang XW, Mao WJ, Zhang ZM, Zhu HL. Discovery of 1H-benzo[d][1,2,3]triazol-1-yl 3,4,5-trimethoxybenzoate as a potential antiproliferative agent by inhibiting histone deacetylase. Bioorg Med Chem 2010; 18:8457-62. [PMID: 21067930 DOI: 10.1016/j.bmc.2010.10.049] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2010] [Revised: 10/18/2010] [Accepted: 10/19/2010] [Indexed: 11/20/2022]
Abstract
Twenty-one benzotriazoles (3-16 and 18-24) were synthesized and half of them (5, 8-16, 20, and 21) were reported for the first time. Their antiproliferative activities against three human cancer cells were assayed. It revealed that 1H-benzo[d][1,2,3]triazol-1-yl 3,4,5-trimethoxybenzoate (9) showed considerable activity against three human cancer cell lines with the half maximal inhibitory concentration (IC(50)) values of 1.2-2.4 nM, which were close to the value of the positive control, doxorubicin. Further investigation indicated compound 9 was a potential histone deacetylase inhibitor (IC(50)=9.4 μM) and its binding mode was simulated using docking method.
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Affiliation(s)
- Jie Fu
- State Key Laboratory of Pharmaceutical Biotechnology, School of Life Sciences, Nanjing University, Nanjing 210093, People's Republic of China
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Khan SN, Khan AU. Role of histone acetylation in cell physiology and diseases: An update. Clin Chim Acta 2010; 411:1401-11. [PMID: 20598676 DOI: 10.1016/j.cca.2010.06.020] [Citation(s) in RCA: 60] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2010] [Revised: 06/04/2010] [Accepted: 06/16/2010] [Indexed: 01/06/2023]
Abstract
Although the role of histone acetylation in gene regulation has been the subject of many reviews, their impact on cell physiology and pathological states of proliferation, differentiation and genome stability in eukaryotic cells remain to be elucidated. Therefore, this review will discuss the molecular, physiological and biochemical aspects of histone acetylation and focus on the interplay of histone acetyltransferases (HATs) and histone deacetylases (HDACs) in different disease states. Current treatment strategies are mostly limited to enzyme inhibitors, though potential lies in targeting other imperative chromatin remodeling factors involved in gene regulation.
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Affiliation(s)
- Shahper N Khan
- Interdisciplinary Biotechnology Unit, Aligarh Muslim University, Aligarh 202002, India
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Steilmann C, Cavalcanti MCO, Bergmann M, Kliesch S, Weidner W, Steger K. Aberrant mRNA expression of chromatin remodelling factors in round spermatid maturation arrest compared with normal human spermatogenesis. Mol Hum Reprod 2010; 16:726-33. [DOI: 10.1093/molehr/gaq054] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Huang WJ, Chen CC, Chao SW, Lee SS, Hsu FL, Lu YL, Hung MF, Chang CI. Synthesis ofN-Hydroxycinnamides Capped with a Naturally Occurring Moiety as Inhibitors of Histone Deacetylase. ChemMedChem 2010; 5:598-607. [DOI: 10.1002/cmdc.200900494] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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40
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Koyama M, Izutani Y, Goda AE, Matsui TA, Horinaka M, Tomosugi M, Fujiwara J, Nakamura Y, Wakada M, Yogosawa S, Sowa Y, Sakai T. Histone deacetylase inhibitors and 15-deoxy-Delta12,14-prostaglandin J2 synergistically induce apoptosis. Clin Cancer Res 2010; 16:2320-32. [PMID: 20371690 DOI: 10.1158/1078-0432.ccr-09-2301] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
PURPOSE The clinically relevant histone deacetylase inhibitors (HDI) valproic acid (VPA) and suberoylanilide hydroxamic acid exert variable antitumor activities but increase therapeutic efficacy when combined with other agents. The natural endogenous ligand of peroxisome proliferator-activated receptor gamma 15-deoxy-Delta(12,14)-prostaglandin J(2) (15d-PGJ(2)) is a potent antineoplastic agent. Therefore, we investigated whether these HDIs in combination with 15d-PGJ(2) could show synergistic antitumor activity in colon cancer DLD-1 cells. EXPERIMENTAL DESIGN Cell viability was determined using a Cell Counting Kit-8 assay. Apoptosis and reactive oxygen species (ROS) generation were determined using flow cytometry analysis. Western blotting and real-time reverse transcription-PCR analysis were carried out to investigate the expression of apoptosis-related molecules. Mice bearing DLD-1 xenograft were divided into four groups (n = 5) and injected everyday (i.p.) with diluent, VPA (100 mg/kg), 15d-PGJ(2) (5 mg/kg), or a combination for 25 days. RESULTS HDI/15d-PGJ(2) cotreatments synergistically induced cell death through caspase-dependent apoptosis in DLD-1 cells. Moreover, HDIs/15d-PGJ(2) caused histone deacetylase inhibition, leading to subsequent ROS generation and endoplasmic reticulum stress to decrease the expression of antiapoptotic molecules Bcl-X(L) and XIAP and to increase that of proapoptotic molecules CAAT/enhancer binding protein homologous protein and death receptor 5. Additionally, VPA/15d-PGJ(2) cotreatment induced ROS-dependent apoptosis in other malignant tumor cells and was more effective than a VPA or 15d-PGJ(2) monotherapy in vivo. CONCLUSIONS Cotreatments with the clinically relevant HDIs and the endogenous peroxisome proliferator-activated receptor gamma ligand 15d-PGJ(2) are promising for the treatment of a broad spectrum of malignant tumors.
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Affiliation(s)
- Makoto Koyama
- Department of Molecular-Targeting Cancer Prevention, Graduate School of Medical Science, Kyoto Prefectural University of Medicine, Kyoto, Japan
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Liu L, Chen B, Qin S, Li S, He X, Qiu S, Zhao W, Zhao H. A novel histone deacetylase inhibitor Chidamide induces apoptosis of human colon cancer cells. Biochem Biophys Res Commun 2010; 392:190-5. [PMID: 20060381 DOI: 10.1016/j.bbrc.2010.01.011] [Citation(s) in RCA: 53] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/31/2009] [Accepted: 01/05/2010] [Indexed: 11/18/2022]
Abstract
Many studies have demonstrated that histone deacetylase (HDAC) inhibitors induce various tumor cells to undergo apoptosis, and such inhibitors have been used in different clinical trials against different human cancers. In this study, we designed and synthesized a novel HDAC inhibitor, Chidamide. We showed that Chidamide was able to increase the acetylation levels of histone H3 and to inhibit the PI3K/Akt and MAPK/Ras signaling pathways, which resulted in arresting colon cancer cells at the G1 phase of the cell cycle and promoting apoptosis. As a result, the proliferation of colon cancer cells was suppressed in vitro. Our data support the potential application of Chidamide as an anticancer agent in treating colon cancer. Future studies are needed to demonstrate its in vivo efficacy.
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Affiliation(s)
- Lin Liu
- Department of Oncology, Zhong-Da Hospital of Southeast University, Nanjing 210009, Jiangsu, PR China
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Healy S, Perez-Cadahia B, Jia D, McDonald MK, Davie JR, Gravel RA. Biotin is not a natural histone modification. BIOCHIMICA ET BIOPHYSICA ACTA-GENE REGULATORY MECHANISMS 2009; 1789:719-33. [PMID: 19770080 DOI: 10.1016/j.bbagrm.2009.09.003] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/01/2009] [Revised: 08/21/2009] [Accepted: 09/14/2009] [Indexed: 10/20/2022]
Abstract
In addition to its role as the cofactor of biotin-dependent carboxylases, biotin has been demonstrated to have a role in cellular processes including transcription and gene silencing. Histones have been proposed to be modified by biotin in a site-specific manner, providing a pathway by which biotin acts as a regulatory molecule for gene expression. However, there is uncertainty whether biotin attachment to histones in vitro can be extrapolated to biotin as a native histone modification. We critically examined a number of methods used to detect biotin attachment on histones, including [(3)H]-biotin uptake, Western blot analysis of histones, and mass spectrometry of affinity purified histone fragments with the objective of determining if the in vivo occurrence of histone biotinylation could be conclusively established. We found for each of these methods that, while biotin could be readily detected on native carboxylases or histones biotinylated in vitro, biotin attachment on native histones could not be detected in cell cultures from various sources. We conclude that biotin is absent in native histones to a sensitivity of at least one part per 100,000, suggesting that the regulatory impact of biotin on gene expression must be through alternate mechanisms.
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Affiliation(s)
- Shannon Healy
- Department of Biochemistry and Molecular Biology, University of Calgary, Calgary, Alberta, Canada T2N 4N1.
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Healy S, Heightman TD, Hohmann L, Schriemer D, Gravel RA. Nonenzymatic biotinylation of histone H2A. Protein Sci 2009; 18:314-28. [PMID: 19160459 DOI: 10.1002/pro.37] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
Holocarboxylase synthetase (HCS, eukaryotic enzyme) and BirA (prokaryotic) are biotin protein ligases that catalyze the ATP-dependent attachment of biotin to apocarboxylases via the reactive intermediate, bio-5'-AMP. In this study, we examined the in vitro mechanism of biotin attachment to histone H2A in the presence of HCS and BirA. The experiment derives from our observations that HCS is found in the nucleus of cells in addition to the cytoplasm, and it has the ability to attach biotin to histones in vitro (Narang et al., Hum Mol Genet 2004; 13:15-23). Using recombinant HCS or BirA, the rate of biotin attachment was considerably slower with histone H2A than with the biotin binding domain of an apocarboxylase. However, on incubation of recombinant H2A with chemically synthesized bio-5'-AMP, H2A was observed to be rapidly labeled with biotin in the absence of enzyme. Nonenzymatic biotinylation of a truncated apocarboxylase (BCCP87) has been previously reported (Streaker and Beckett, Protein Sci 2006; 15:1928-1935), though at a much slower rate than we observe for H2A. The specific attachment sites of nonenzymatically biotinylated recombinant H2A at different time points were identified using mass spectrometry, and were found to consist of a similar pattern of biotin attachment as seen in the presence of HCS, with preference for lysines in the highly basic N-terminal region of the histone. None of the lysine sites within H2A resembles the biotin attachment consensus sequence seen in carboxylases, suggesting a novel mechanism for histone biotinylation.
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Affiliation(s)
- Shannon Healy
- Department of Biochemistry and Molecular Biology, University of Calgary, Alberta, Canada.
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Yang Y, Lyubartsev AP, Korolev N, Nordenskiöld L. Computer modeling reveals that modifications of the histone tail charges define salt-dependent interaction of the nucleosome core particles. Biophys J 2009; 96:2082-94. [PMID: 19289035 DOI: 10.1016/j.bpj.2008.10.073] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2008] [Revised: 09/19/2008] [Accepted: 10/31/2008] [Indexed: 10/21/2022] Open
Abstract
Coarse-grained Langevin molecular dynamics computer simulations were conducted for systems that mimic solutions of nucleosome core particles (NCPs). The NCP was modeled as a negatively charged spherical particle representing the complex of DNA and the globular part of the histones combined with attached strings of connected charged beads modeling the histone tails. The size, charge, and distribution of the tails relative to the core were built to match real NCPs. Three models of NCPs were constructed to represent different extents of covalent modification on the histone tails: (nonmodified) recombinant (rNCP), acetylated (aNCP), and acetylated and phosphorylated (paNCP). The simulation cell contained 10 NCPs in a dielectric continuum with explicit mobile counterions and added salt. The NCP-NCP interaction is decisively dependent on the modification state of the histone tails and on salt conditions. Increasing the monovalent salt concentration (KCl) from salt-free to physiological concentration leads to NCP aggregation in solution for rNCP, whereas NCP associates are observed only occasionally in the system of aNCPs. In the presence of divalent salt (Mg(2+)), rNCPs form dense stable aggregates, whereas aNCPs form aggregates less frequently. Aggregates are formed via histone-tail bridging and accumulation of counterions in the regions of NCP-NCP contacts. The paNCPs do not show NCP-NCP interaction upon addition of KCl or in the presence of Mg(2+). Simulations for systems with a gradual substitution of K(+) for Mg(2+), to mimic the Mg(2+) titration of an NCP solution, were performed. The rNCP system showed stronger aggregation that occurred at lower concentrations of added Mg(2+), compared to the aNCP system. Additional molecular dynamics simulations performed with a single NCP in the simulation cell showed that detachment of the tails from the NCP core was modest under a wide range of salt concentrations. This implies that salt-induced tail dissociation of the histone tails from the globular NCP is not in itself a major factor in NCP-NCP aggregation. The approximation of coarse-graining, with respect to the description of the NCP as a sphere with uniform charge distribution, was tested in control simulations. A more detailed description of the NCP did not change the main features of the results. Overall, the results of this work are in agreement with experimental data reported for NCP solutions and for chromatin arrays.
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Affiliation(s)
- Ye Yang
- School of Biological Sciences, Nanyang Technological University, Singapore
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Munshi A, Shafi G, Aliya N, Jyothy A. Histone modifications dictate specific biological readouts. J Genet Genomics 2009; 36:75-88. [PMID: 19232306 DOI: 10.1016/s1673-8527(08)60094-6] [Citation(s) in RCA: 94] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2008] [Revised: 10/23/2008] [Accepted: 10/30/2008] [Indexed: 12/21/2022]
Abstract
The basic unit of chromatin is the nucleosomal core particle, containing 147 bp of DNA that wraps twice around an octamer of core histones. The core histones bear a highly dynamic N-terminal amino acid tail around 20-35 residues in length and rich in basic amino acids. These tails extending from the surface of nucleosome play an important role in folding of nucleosomal arrays into higher order chromatin structure, which plays an important role in eukaryotic gene regulation. The amino terminal tails protruding from the nuclesomes get modified by the addition of small groups such as methyl, acetyl and phosphoryl groups. In this review, we focus on these complex modification patterns and their biological functions. Moreover, these modifications seem to be part of a complex scheme where distinct histone modifications act in a sequential manner or in combination to form a "histone code" read by other proteins to control the structure and/or function of the chromatin fiber. Errors in this histone code may be involved in many human diseases especially cancer, the nature of which could be therapeutically exploited. Increasing evidence suggests that many proteins bear multiple, distinct modifications, and the ability of one modification to antagonize or synergize the deposition of another can have significant biological consequences.
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Affiliation(s)
- Anjana Munshi
- Institute of Genetics and Hospital for Genetic Diseases, Begumpet, Hyderabad, India.
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Chimenti F, Bizzarri B, Maccioni E, Secci D, Bolasco A, Chimenti P, Fioravanti R, Granese A, Carradori S, Tosi F, Ballario P, Vernarecci S, Filetici P. A novel histone acetyltransferase inhibitor modulating Gcn5 network: cyclopentylidene-[4-(4'-chlorophenyl)thiazol-2-yl)hydrazone. J Med Chem 2009; 52:530-6. [PMID: 19099397 DOI: 10.1021/jm800885d] [Citation(s) in RCA: 95] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Acetylation is a key modulator of genome accessibility through decondensation of the chromatin structure. The balance between acetylation and opposite deacetylation is, in fact, a prerequisite for several cell functions and differentiation. To find modulators of the histone acetyltransferase Gcn5p, we performed a phenotypic screening on a set of newly synthesized molecules derived from thiazole in budding yeast Saccharomyces cerevisiae. We selected compounds that induce growth inhibition in yeast strains deleted in genes encoding known histone acetyltransferases. A novel molecule CPTH2, cyclopentylidene-[4-(4'-chlorophenyl)thiazol-2-yl)hydrazone, was selected based on its inhibitory effect on the growth of a gcn5Delta strain. We demonstrated a specific chemical-genetic interaction between CPTH2 and HAT Gcn5p, indicating that CPTH2 inhibits the Gcn5p dependent functional network. CPTH2 inhibited an in vitro HAT reaction, which is reverted by increasing concentration of histone H3. In vivo, it decreased acetylation of bulk histone H3 at the specific H3-AcK14 site. On the whole, our results demonstrate that CPTH2 is a novel HAT inhibitor modulating Gcn5p network in vitro and in vivo.
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Affiliation(s)
- Franco Chimenti
- Dipartimento di Chimica e Tecnologie del Farmaco, Universita degli Studi di Roma La Sapienza, P. le A. Moro 5, 00185 Rome, Italy
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Archin NM, Espeseth A, Parker D, Cheema M, Hazuda D, Margolis DM. Expression of latent HIV induced by the potent HDAC inhibitor suberoylanilide hydroxamic acid. AIDS Res Hum Retroviruses 2009; 25:207-12. [PMID: 19239360 DOI: 10.1089/aid.2008.0191] [Citation(s) in RCA: 284] [Impact Index Per Article: 18.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023] Open
Abstract
Histone deacetylases (HDACs) act on histones within the nucleosome-bound promoter of human immunodeficiency virus type 1 (HIV-1) to maintain proviral latency. HDAC inhibition leads to promoter expression and the escape of HIV from latency. We evaluated the ability of the potent inhibitor recently licensed for use in oncology, suberoylanilide hydroxamic acid (SAHA; Vorinostat), selective for Class I HDACs, to induce HIV promoter expression in cell lines and virus production from the resting CD4(+) T cells of antiretroviral-treated, aviremic HIV-infected patients. In J89, a Jurkat T cell line infected with a single HIV genome encoding the enhanced green fluorescence protein (EGFP) within the HIV genome, SAHA induced changes at nucleosome 1 of the HIV promoter in chromatin immunoprecipitation (ChIP) assays in concert with EGFP expression. In the resting CD4(+) T cells of antiretroviral-treated, aviremic HIV-infected patients clinically achievable exposures to SAHA induced virus outgrowth ex vivo. These results suggest that potent, selective HDAC inhibitors may allow improved targeting of persistent proviral HIV infection, and define parameters for in vivo studies using SAHA.
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Affiliation(s)
- Nancie M. Archin
- University of North Carolina at Chapel Hill, Chapel Hill, North Carolina 27599
| | - Amy Espeseth
- Merck Research Laboratories, West Point, Pennsylvania 19486
| | - Daniel Parker
- University of North Carolina at Chapel Hill, Chapel Hill, North Carolina 27599
| | - Manzoor Cheema
- University of North Carolina at Chapel Hill, Chapel Hill, North Carolina 27599
| | - Daria Hazuda
- Merck Research Laboratories, West Point, Pennsylvania 19486
| | - David M. Margolis
- University of North Carolina at Chapel Hill, Chapel Hill, North Carolina 27599
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Hecht N, Behr R, Hild A, Bergmann M, Weidner W, Steger K. The common marmoset (Callithrix jacchus) as a model for histone and protamine expression during human spermatogenesis. Hum Reprod 2008; 24:536-45. [DOI: 10.1093/humrep/den390] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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Zou XM, Li YL, Wang H, Cui W, Li XL, Fu SB, Jiang HC. Gastric cancer cell lines induced by trichostatin A. World J Gastroenterol 2008; 14:4810-5. [PMID: 18720545 PMCID: PMC2739346 DOI: 10.3748/wjg.14.4810] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Abstract
AIM: To explore the effect of trichostatin A (TSA) on apoptosis and acetylated histone H3 levels in gastric cancer cell lines BGC-823 and SGC-7901.
METHODS: The effect of TSA on growth inhibition and apoptosis was examined by MTT, fluorescence microscopy and PI single-labeled flow cytometry. The acetylated histone H3 level was detected by Western blot.
RESULTS: TSA induced apoptosis in gastric cancer cell lines BGC-823 and SGC-7901 was in a dose and time-dependent manner. Apoptotic cells varied significantly between TSA treated groups (37.5 ng/mL 72 h for BGC-823 cell line and 75 ng/mL 72 h for SGC-7901 cell line) and control group (0.85 ± 0.14 vs 1.14 ± 0.07, P = 0.02; 0.94 ± 0.07 vs 1.15 ± 0.06, P = 0.02). Morphologic changes of apoptosis, including nuclear chromatin condensation and fluorescence strength, were observed under fluorescence microscopy. TSA treatment in BGC-823 and SGC-7901 cell lines obviously induced cell apoptosis, which was demonstrated by the increased percentage of sub-G1 phase cells, the reduction of G1-phase cells and the increase of apoptosis rates in flow cytometric analysis. The result of Western blot showed that the expression of acetylated histone H3 increased in BGC-823 and SGC-7901 TSA treatment groups as compared with the control group.
CONCLUSION: TSA can induce cell apoptosis in BGC-823 and SGC-7901 cell lines. The expression of acetylated histone H3 might be correlated with apoptosis.
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Xia H, Liu L, Reinhart C, Michel H. Heterologous expression of human Neuromedin U receptor 1 and its subsequent solubilization and purification. BIOCHIMICA ET BIOPHYSICA ACTA-BIOMEMBRANES 2008; 1778:2203-9. [PMID: 18598671 DOI: 10.1016/j.bbamem.2008.05.017] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/08/2008] [Revised: 05/08/2008] [Accepted: 05/28/2008] [Indexed: 10/21/2022]
Abstract
Human Neuromedin U receptor 1 (hNmU-R1) is a member of G protein-coupled receptor family. For structural determination of hNmU-R1, the production of hNmU-R1 in milligram amounts is a prerequisite. Here we reported two different eukaryotic expression systems, namely, Semliki Forest virus (SFV)/BHK-21 and baculovirus/Spodoptera frugiperda (Sf9) cell systems for overproduction of this receptor. In the SFV-based expression system, hNmU-R1 was produced at a level of 5 pmol receptor/mg membrane protein and the yield could be further increased to 22 pmol receptor/mg membrane protein by supplementation with 2% dimethyl sulfoxide (DMSO). Around 8 pmol receptor/mg membrane protein could be achieved in baculovirus-infected Sf9 cells. The recombinant hNmU-R1 from SFV- and baculovirus-based systems was functional, with a Kd value of [125I] NmU-23 (rat) similar to that from transiently transfected COS-7 cells, where hNmU-R1 was first identified. With the aid of 1% n-dodecyl-beta-D-maltoside (LM)/0.25% cholesteryl hemisuccinate (CHS), the yield of functional hNmU-R1 could reach 80%. The recombinant receptor from Sf9 cells was purified to homogeneity. The specific binding of the purified receptor to [125I] NmU-23 (rat) indicated that the receptor is bioactive. This is the first report of successful solubilization and purification of hNmU-R1, and will enable functional and structural studies of the hNmU-R1.
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Affiliation(s)
- Hongyan Xia
- Max-Planck-Institute of Biophysics, 60438 Frankfurt am Main, Germany.
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