keyword
MENU ▼
Read by QxMD icon Read
search

Histone demethylation

keyword
https://www.readbyqxmd.com/read/28218430/stepwise-assembly-of-functional-c-terminal-rest-nrsf-transcriptional-repressor-complexes-as-a-drug-target
#1
Ken Inui, Zongpei Zhao, Juan Yuan, Sakthidasan Jayaprakash, Le T M Le, Srdja Drakulic, Bjoern Sander, Monika M Golas
In human cells, thousands of predominantly neuronal genes are regulated by the repressor element 1 (RE1)-silencing transcription factor/neuron-restrictive silencer factor (REST/NRSF). REST/NRSF represses transcription of these genes in stem cells and non-neuronal cells by tethering corepressor complexes. Aberrant REST/NRSF expression and intracellular localization are associated with cancer and neurodegeneration in humans. To date, detailed molecular analyses of REST/NRSF and its C-terminal repressor complex have been hampered largely by the lack of sufficient amounts of purified REST/NRSF and its complexes...
February 20, 2017: Protein Science: a Publication of the Protein Society
https://www.readbyqxmd.com/read/28213207/epimetabolites-discovering-metabolism-beyond-building-and-burning
#2
REVIEW
Megan R Showalter, Tomas Cajka, Oliver Fiehn
Enzymatic transformations of primary, canonical metabolites generate active biomolecules that regulate important cellular and physiological processes. Roles include regulation of histone demethylation in epigenetics, inflammation in tissue injury, insulin sensitivity, cancer cell invasion, stem cell pluripotency status, inhibition of nitric oxide signaling and others. Such modified compounds, defined as epimetabolites, have functions distinct from classic hormones as well as removed from generic anabolism and catabolism...
February 14, 2017: Current Opinion in Chemical Biology
https://www.readbyqxmd.com/read/28209718/demethylation-of-h3k27-is-essential-for-the-induction-of-direct-cardiac-reprogramming-by-mir-combo
#3
Sophie Dal-Pra, Conrad P Hodgkinson, Maria Mirotsou, Imke Kirste, Victor J Dzau
Rationale: Direct reprogramming of cardiac fibroblasts to cardac omyocytes has recently emerged as a novel and promising approach to regenerate the injured myocardium. We have previously demonstrated the feasibility of this approach in vitro and in vivo using a combination of four microRNAs (miR-1, miR-133, miR-208 and miR-499) that we named miR combo. However, the mechanism of miR combo mediated direct cardiac reprogramming is currently unknown. Objective: Here we investigated the possibility that miR combo initiated direct cardiac reprogramming through an epigenetic mechanism...
February 16, 2017: Circulation Research
https://www.readbyqxmd.com/read/28208656/primetime-for-learning-genes
#4
REVIEW
Joyce Keifer
Learning genes in mature neurons are uniquely suited to respond rapidly to specific environmental stimuli. Expression of individual learning genes, therefore, requires regulatory mechanisms that have the flexibility to respond with transcriptional activation or repression to select appropriate physiological and behavioral responses. Among the mechanisms that equip genes to respond adaptively are bivalent domains. These are specific histone modifications localized to gene promoters that are characteristic of both gene activation and repression, and have been studied primarily for developmental genes in embryonic stem cells...
February 11, 2017: Genes
https://www.readbyqxmd.com/read/28186961/combination-epigenetic-therapy-in-metastatic-colorectal-cancer-mcrc-with-subcutaneous-5-azacitidine-and-entinostat-a-phase-2-consortium-stand-up-2-cancer-study
#5
Nilofer S Azad, Anthony El-Khoueiry, Jun Yin, Ann L Oberg, Patrick Flynn, Douglas Adkins, Anup Sharma, Daniel J Weisenberger, Thomas Brown, Prakriti Medvari, Peter A Jones, Hariharan Easwaran, Ihab Kamel, Nathan Bahary, George Kim, Joel Picus, Henry C Pitot, Charles Erlichman, Ross Donehower, Hui Shen, Peter W Laird, Richard Piekarz, Stephen Baylin, Nita Ahuja
PURPOSE: Therapy with demethylating agent 5-azacitidine and histone deacetylase inhibitor entinostat shows synergistic re-expression of tumor-suppressor genes and growth inhibition in colorectal (CRC) cell lines and in vivo studies. EXPERIMENTAL DESIGN: We conducted a phase II, multi-institutional study of the combination in metastatic CRC patients. Subcutaneous azacitidine was administered at 75 mg/m2 days 1-5 and 8-10 and entinostat was given 7 mg orally on days 3 and 10...
February 5, 2017: Oncotarget
https://www.readbyqxmd.com/read/28177890/long-noncoding-rna-hotair-promotes-metastasis-of-renal-cell-carcinoma-by-up-regulating-histone-h3k27-demethylase-jmjd3
#6
Ming Xia, Lv Yao, Qiaoxia Zhang, Feng Wang, Hongbin Mei, Xiaoqiang Guo, Weiren Huang
Long Noncoding RNAs (lncRNAs) are a kind of non-protein coding transcripts longer than 200 nucleotides, and play important roles in diverse biological processes, such as embryonic development and apoptosis. Homeobox (HOX) transcript antisense intergenic RNA (HOTAIR) is a negative prognostic factor in a variety of human cancers, such as breast, liver and lung cancers. HOTAIR can promote cancer cell metastasis by reprogramming chromatin organization. In the present study, HOTAIR expression was elevated in tissues of renal cell carcinoma compared to adjacent normal tissues, and positively correlated with metastasis (P<0...
February 3, 2017: Oncotarget
https://www.readbyqxmd.com/read/28169463/relationship-between-epigenetic-regulation-dietary-habits-and-the-developmental-origins-of-health-and-disease-theory
#7
REVIEW
Kazuki Mochizuki, Natsuyo Hariya, Kazue Honma, Toshinao Goda
Environmental stressors during developmental stages are hypothesized to increase the risk of developing metabolic diseases such as obesity, type 2 diabetes, hypertension, and psychiatric diseases during later life. This theory is known as the Developmental Origins of Health and Disease (DOHaD). Recent studies suggest that accumulation of environmental stress, including during developmental stages, is internalized as acquired information designated as "epigenetic memory." This epigenetic memory is generally indicated as DNA methylation and histone modifications in the chromatin...
February 7, 2017: Congenital Anomalies
https://www.readbyqxmd.com/read/28158205/structure-activity-relationship-and-modeling-studies-of-inhibitors-of-lysine-specific-demethylase-1
#8
Chao Zhou, Fangrui Wu, Lianghao Lu, Liping Wei, Eric Pai, Yuan Yao, Yongcheng Song
Post-translational modifications of histone play important roles in gene transcription. Aberrant methylation of histone lysine sidechains have been often found in cancer. Lysine specific demethylase 1 (LSD1), which can demethylate histone H3 lysine 4 (H3K4) and other proteins, has recently been found to be a drug target for acute myeloid leukemia. To understand structure activity/selectivity relationships of LSD1 inhibitors, several series of cyclopropylamine and related compounds were synthesized and tested for their activities against LSD1 and related monoamine oxidase (MAO) A and B...
2017: PloS One
https://www.readbyqxmd.com/read/28155862/synergetic-effects-of-dna-methylation-and-histone-modification-during-mouse-induced-pluripotent-stem-cell-generation
#9
Guiying Wang, Rong Weng, Yuanyuan Lan, Xudong Guo, Qidong Liu, Xiaoqin Liu, Chenqi Lu, Jiuhong Kang
DNA methylation and histone methylation (H3K27me3) have been reported as major barriers to induced pluripotent stem cell (iPSC) generation using four core transcription factors (Oct4, Sox2, Klf4, and c-Myc, termed OSKM). Here, to illustrate the possibility of deriving iPSCs via demethylation, as well as the exact effects of DNA methylation and histone modification on gene expression regulation, we performed RNA sequencing to characterize the transcriptomes of ES cells and iPSCs derived by demethylation with miR-29b or shDnmt3a, and carried out integrated analyses...
February 3, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28134679/pathogenic-mechanisms-of-intracellular-bacteria
#10
Hans Helmut Niller, Roland Masa, Annamária Venkei, Sándor Mészáros, Janos Minarovits
PURPOSE OF REVIEW: We wished to overview recent data on a subset of epigenetic changes elicited by intracellular bacteria in human cells. Reprogramming the gene expression pattern of various host cells may facilitate bacterial growth, survival, and spread. RECENT FINDINGS: DNA-(cytosine C5)-methyltransferases of Mycoplasma hyorhinis targeting cytosine-phosphate-guanine (CpG) dinucleotides and a Mycobacterium tuberculosis methyltransferase targeting non-CpG sites methylated the host cell DNA and altered the pattern of gene expression...
January 27, 2017: Current Opinion in Infectious Diseases
https://www.readbyqxmd.com/read/28130569/histone-demethylase-utx-counteracts-glucocorticoid-deregulation-of-osteogenesis-by-modulating-histone-dependent-and-independent-pathways
#11
Feng-Sheng Wang, Wei-Shiung Lian, Mel S Lee, Wen-Tsan Weng, Ying-Hsien Huang, Yu-Shan Chen, Yi-Chih Sun, Shing-Long Wu, Pei-Chin Chuang, Jih-Yang Ko
: Excess glucocorticoid administration impairs osteogenic activities, which raises the risk of osteoporotic disorders. Epigenetic methylation of DNA and histone regulates the lineage commitment of progenitor cells. This study was undertaken to delineate the actions of histone lysine demethylase 6a (UTX) with regard to the glucocorticoid impediment of osteogenic differentiation. Osteogenic progenitor cells responded to supraphysiological glucocorticoid by elevating CpG dinucleotide methylation proximal to transcription start sites within Runx2 and osterix promoters and Wnt inhibitor Dickkopf-1 (Dkk1) expression concomitant with low UTX expression...
January 27, 2017: Journal of Molecular Medicine: Official Organ of the "Gesellschaft Deutscher Naturforscher und Ärzte"
https://www.readbyqxmd.com/read/28118853/allele-specific-analysis-of-cell-fusion-mediated-pluripotent-reprograming-reveals-distinct-and-predictive-susceptibilities-of-human-x-linked-genes-to-reactivation
#12
Irene Cantone, Gopuraja Dharmalingam, Yi-Wah Chan, Anne-Celine Kohler, Boris Lenhard, Matthias Merkenschlager, Amanda G Fisher
BACKGROUND: Inactivation of one X chromosome is established early in female mammalian development and can be reversed in vivo and in vitro when pluripotency factors are re-expressed. The extent of reactivation along the inactive X chromosome (Xi) and the determinants of locus susceptibility are, however, poorly understood. Here we use cell fusion-mediated pluripotent reprograming to study human Xi reactivation and allele-specific single nucleotide polymorphisms (SNPs) to identify reactivated loci...
January 25, 2017: Genome Biology
https://www.readbyqxmd.com/read/28114349/dna-methylation-changes-in-valproic-acid-treated-hela-cells-as-assessed-by-image-analysis-immunofluorescence-and-vibrational-microspectroscopy
#13
Giovana M B Veronezi, Marina Barreto Felisbino, Maria Sílvia V Gatti, Maria Luiza S Mello, Benedicto de Campos Vidal
Valproic acid (VPA), a well-known histone deacetylase inhibitor, has been reported to affect the DNA methylation status in addition to inducing histone hyperacetylation in several cell types. In HeLa cells, VPA promotes histone acetylation and chromatin remodeling. However, DNA demethylation was not checked in this cell model for standing effects longer than those provided by histone acetylation, which is a rapid and transient phenomenon. Demonstration of VPA-induced DNA demethylation in HeLa cells would contribute to understanding the effect of VPA on an aggressive tumor cell line...
2017: PloS One
https://www.readbyqxmd.com/read/28098854/lsd1-sustains-estrogen-driven-endometrial-carcinoma-cell-proliferation-through-the-pi3k-akt-pathway-via-di-demethylating-h3k9-of-cyclin%C3%A2-d1
#14
Chunqin Chen, Yanan Wang, Shiyu Wang, Yuan Liu, Jiawen Zhang, Yuyao Xu, Zhenbo Zhang, Wei Bao, Sufang Wu
A recent study reported that histone lysine specific demethylase 1 (LSD1, KDM1A) is overexpressed in endometrioid endometrial carcinoma (EEC) and associated with tumor progression as well as poor prognosis. However, the physiological function and mechanism of LSD1 in endometrial cancer (EC) remains largely unknown. In this study, we demonstrate that β-estradiol (E2) treatment increased LSD1 expression via the GPR30/PI3K/AKT pathway in endometrial cancer cells. Both siGPR30 and the PI3K inhibitor LY294002 block this effect...
March 2017: International Journal of Oncology
https://www.readbyqxmd.com/read/28059468/gene-expression-analysis-combined-with-functional-genomics-approach-identifies-itih5-as-tumor-suppressor-gene-in-cervical-carcinogenesis
#15
Jessica Dittmann, Angelique Ziegfeld, Lars Jansen, Mieczyslaw Gajda, Vera Kloten, Edgar Dahl, Ingo B Runnebaum, Matthias Dürst, Claudia Backsch
Progression from human papillomavirus-induced premalignant cervical intraepithelial neoplasia (CIN) to cervical cancer (CC) is driven by genetic and epigenetic events. Our microarray-based expression study has previously shown that inter-α-trypsin-inhibitor heavy chain 5 (ITIH5) mRNA levels in CCs were significantly lower than in high-grade precursor lesions (CIN3s). Therefore, we aimed to analyze in depth ITIH5 expression during cervical carcinogenesis in biopsy material and cell culture. Moreover, functional analyses were performed by ectopic expression of ITIH5 in different cell lines...
January 6, 2017: Molecular Carcinogenesis
https://www.readbyqxmd.com/read/28057213/a-new-molecular-mechanism-underlying-the-antitumor-effect-of-dna-methylation-inhibitors-via-an-antiviral-immune-response
#16
Y Saito, T Nakaoka, H Saito
Chromatin remodeling mediated by DNA methylation and histone modifications play critical roles in the transcriptional regulation of protein-coding genes, noncoding RNAs such as microRNAs, and endogenous retroviruses (ERVs). Many studies have shown that aberrant DNA methylation and histone modifications are associated with the initiation and progression of various malignancies. Epigenetic silencing of tumor suppressor genes in cancer is generally mediated by DNA hypermethylation of CpG island promoters and histone modifications such as histone deacetylation, methylation of histone H3 lysine 9 (H3K9), and trimethylation of H3K27...
2017: Advances in Protein Chemistry and Structural Biology
https://www.readbyqxmd.com/read/28041878/epigenetic-modifiers-facilitate-induction-and-pluripotency-of-porcine-ipscs
#17
Jian Mao, Qian Zhang, Wei Deng, Hua Wang, Kai Liu, Haifeng Fu, Qiang Zhao, Xumin Wang, Lin Liu
Inadequate silencing of exogenous genes represents a major obstacle to complete epigenetic reprogramming of porcine-induced pluripotent stem cells (piPSCs) by conventional pluripotency transcription factors (OSKM). We tested the hypothesis that epigenetic modification by active DNA or histone demethylation or by inhibition of histone deacetylase would enhance reprogramming and exogenous gene silencing in piPSCs. piPSCs induced by OSKM in combination with epigenetic factors, specifically Ten-Eleven Translocation (Tet1 or Tet3) or lysine (K)-specific demethylase 3A (Kdm3a), expressed higher levels of Rex1 and other genes representing naive state and exhibited more open chromatin status, compared with those of OSKM controls...
January 10, 2017: Stem Cell Reports
https://www.readbyqxmd.com/read/28007596/soft-matrices-downregulate-fak-activity-to-promote-growth-of-tumor-repopulating-cells
#18
Youhua Tan, Adam Richard Wood, Qiong Jia, Wenwen Zhou, Junyu Luo, Fang Yang, Junwei Chen, Junjian Chen, Jian Sun, Jihye Seong, Arash Tajik, Rishi Singh, Ning Wang
Tumor-repopulating cells (TRCs) are a tumorigenic sub-population of cancer cells that drives tumorigenesis. We have recently reported that soft fibrin matrices maintain TRC growth by promoting histone 3 lysine 9 (H3K9) demethylation and Sox2 expression and that Cdc42 expression influences H3K9 methylation. However, the underlying mechanisms of how soft matrices induce H3K9 demethylation remain elusive. Here we find that TRCs exhibit lower focal adhesion kinase (FAK) and H3K9 methylation levels in soft fibrin matrices than control melanoma cells on 2D rigid substrates...
January 29, 2017: Biochemical and Biophysical Research Communications
https://www.readbyqxmd.com/read/27995963/histone-deacetylase-inhibitors-mediate-dna-damage-repair-in-ameliorating-hemorrhagic-cystitis
#19
Subhash Haldar, Christopher Dru, Rajeev Mishra, Manisha Tripathi, Frank Duong, Bryan Angara, Ana Fernandez, Moshe Arditi, Neil A Bhowmick
Hemorrhagic cystitis is an inflammatory and ulcerative bladder condition associated with systemic chemotherapeutics, like cyclophosphomide. Earlier, we reported reactive oxygen species resulting from cyclophosphamide metabolite, acrolein, causes global methylation followed by silencing of DNA damage repair genes. Ogg1 (8-oxoguanine DNA glycosylase) is one such silenced base excision repair enzyme that can restore DNA integrity. The accumulation of DNA damage results in subsequent inflammation associated with pyroptotic death of bladder smooth muscle cells...
December 20, 2016: Scientific Reports
https://www.readbyqxmd.com/read/27994610/genome-wide-analysis-of-soybean-jmjc-domain-containing-proteins-suggests-evolutionary-conservation-following-whole-genome-duplication
#20
Yapeng Han, Xiangyong Li, Lin Cheng, Yanchun Liu, Hui Wang, Danxia Ke, Hongyu Yuan, Liangsheng Zhang, Lei Wang
Histone modifications, such as methylation and demethylation, play an important role in regulating chromatin structure and gene expression. The JmjC domain-containing proteins, an important family of histone lysine demethylases (KDMs), play a key role in maintaining homeostasis of histone methylation in vivo. In this study, we performed a comprehensive analysis of the jumonji C (JmjC) gene family in the soybean genome and identified 48 JmjC genes (GmJMJs) distributed unevenly across 18 chromosomes. Phylogenetic analysis showed that these JmjC domain-containing genes can be divided into eight groups...
2016: Frontiers in Plant Science
keyword
keyword
17934
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"