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Nucleosome assembly protein 1-like 1

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https://www.readbyqxmd.com/read/29769315/characterization-of-additional-components-of-the-environmental-ph-sensing-complex-in-the-pathogenic-fungus-cryptococcus-neoformans
#1
Kaila M Pianalto, Kyla S Ost, Hannah E Brown, J Andrew Alspaugh
Pathogenic microorganisms must adapt to changes in their immediate surroundings, including alterations in pH, to survive the shift from the external environment to that of the infected host. In the basidiomycete fungal pathogen Cryptococcus neoformans , these pH changes are primarily sensed by the fungal-specific, alkaline pH-sensing Rim/Pal pathway. The C. neoformans Rim pathway has diverged significantly from that described in ascomycete fungi. We recently identified the C. neoformans putative pH sensor Rra1, which activates the Rim pathway in response to elevated pH...
May 16, 2018: Journal of Biological Chemistry
https://www.readbyqxmd.com/read/29751847/asf1-is-required-to-load-histones-on-the-hira-complex-in-preparation-of-paternal-chromatin-assembly-at-fertilization
#2
Béatrice Horard, Laure Sapey-Triomphe, Emilie Bonnefoy, Benjamin Loppin
BACKGROUND: Anti-Silencing Factor 1 (ASF1) is a conserved H3-H4 histone chaperone involved in both Replication-Coupled and Replication-Independent (RI) nucleosome assembly pathways. At DNA replication forks, ASF1 plays an important role in regulating the supply of H3.1/2 and H4 to the CAF-1 chromatin assembly complex. ASF1 also provides H3.3-H4 dimers to HIRA and DAXX chaperones for RI nucleosome assembly. The early Drosophila embryo is an attractive system to study chromatin assembly in a developmental context...
May 11, 2018: Epigenetics & Chromatin
https://www.readbyqxmd.com/read/29572888/prdm8-exhibits-anti-tumor-activities-toward-hepatocellular-carcinoma-by-targeting-nap1l1
#3
Zhiqiang Chen, Wen Gao, Liyong Pu, Long Zhang, Guoyong Han, Xueliang Zuo, Yao Zhang, Xiangcheng Li, Hongbing Shen, Xuehao Wang, Jindao Wu
Hepatocellular carcinoma (HCC) is a major leading cause of cancer mortality worldwide. PRDI-BF1 and RIZ homology domain containing 8 (PRDM8) is a key regulator in neural development and testis steroidogenesis, however, its role in liver carcinogenesis remains to be investigated. In this study, PRDM8 was found down-regulated in HCC, which was linked with shorter recurrence-free survival. Lentiviral-based overexpression and knockdown approaches showed that PRDM8 inhibited HCC cell proliferation, migration, and invasion...
March 23, 2018: Hepatology: Official Journal of the American Association for the Study of Liver Diseases
https://www.readbyqxmd.com/read/29490266/nap1l1-controls-embryonic-neural-progenitor-cell-proliferation-and-differentiation-in-the-developing-brain
#4
Huimin Qiao, Yanxin Li, Chao Feng, Shuguang Duo, Fen Ji, Jianwei Jiao
The precise function and role of nucleosome assembly protein 1-like 1 (Nap1l1) in brain development are unclear. Here, we find that Nap1l1 knockdown decreases neural progenitor cell (NPC) proliferation and induces premature neuronal differentiation during cortical development. A similar deficiency in embryonic neurogenesis was observed in Nap1l1 knockout (KO) mice, which were generated using the CRISPR-Cas9 system. RNA sequencing (RNA-seq) analysis indicates that Ras-associated domain family member 10 (RassF10) may be the downstream target of Nap1l1...
February 27, 2018: Cell Reports
https://www.readbyqxmd.com/read/29468452/leptin-regulates-the-pro-inflammatory-response-in-human-epidermal-keratinocytes
#5
Moonyoung Lee, Eunyoung Lee, Sun Hee Jin, Sungjin Ahn, Sae On Kim, Jungmin Kim, Dalwoong Choi, Kyung-Min Lim, Seung-Taek Lee, Minsoo Noh
The role of leptin in cutaneous wound healing process has been suggested in genetically obese mouse studies. However, the molecular and cellular effects of leptin on human epidermal keratinocytes are still unclear. In this study, the whole-genome-scale microarray analysis was performed to elucidate the effect of leptin on epidermal keratinocyte functions. In the leptin-treated normal human keratinocytes (NHKs), we identified the 151 upregulated and 53 downregulated differentially expressed genes (DEGs). The gene ontology (GO) enrichment analysis with the leptin-induced DEGs suggests that leptin regulates NHKs to promote pro-inflammatory responses, extracellular matrix organization, and angiogenesis...
May 2018: Archives of Dermatological Research
https://www.readbyqxmd.com/read/29209909/biochemical-and-biophysical-characterisation-of-higher-oligomeric-structure-of-rat-nucleosome-assembly-protein-1
#6
Divya Reddy, Saikat Bhattacharya, Vinod Jani, Uddhavesh Sonavane, Rajendra Joshi, Sanjay Gupta
Nucleosome assembly protein 1 (NAP1) is a histone chaperone that exchanges histone H2A-H2B dimer from chromatin templates. Studies with yeast NAP1 (yNAP1) have revealed its existence as multiple oligomeric species in solution. Here, rat NAP1 (rNAP1), which is 98% identical to the human NAP1 (hNAP1) was used as a model to characterize the oligomeric structures of this protein in higher eukaryotes. Gel filtration chromatography and Dynamic light scattering of recombinant rNAP1 indicated that the protein exists as a complex mixture of multimeric species even at 500 mM ionic strength...
February 2018: Protein Journal
https://www.readbyqxmd.com/read/29183721/role-of-chromatin-assembly-factor-1-in-dna-replication-of-plasmodium-falciparum
#7
Mohit Kumar Gupta, Meetu Agarawal, Khadija Banu, K Sony Reddy, Deepak Gaur, Suman Kumar Dhar
Nucleosome assembly in P. falciparum could be the key process in maintaining its genomic integrity as DNA replicates more than once per cell cycle during several stages of its life cycle. Here, we report the functional characterization of P. falciparum chromatin assembly factor 1 (CAF1), which interacts with several proteins namely PfCAF2, Histones, PfHP1 and others. Consistent with the above findings, we demonstrate the presence of PfCAF1 at the telomeric repeat regions, central and subtelomeric var genes of multiple var gene family along with PfHP1...
January 1, 2018: Biochemical and Biophysical Research Communications
https://www.readbyqxmd.com/read/28687276/nap1l1-regulates-nf-%C3%AE%C2%BAb-signaling-pathway-acting-on-anti-apoptotic-mcl-1-gene-expression
#8
Toshiaki Tanaka, Yasukazu Hozumi, Mitsuyoshi Iino, Kaoru Goto
Nuclear factor-κB (NF-κB) participates in apoptosis signaling pathway under various pathophysiological conditions. It exerts transcriptional control on the anti-apoptotic Bcl-2 family, such as Bcl-2, Bcl-xl, and Mcl-1, which act on the mitochondrial outer membrane. Previously, we described that NF-κB is negatively regulated by diacylglycerol kinase ζ (DGKζ), an enzyme that phosphorylates a lipid second messenger diacylglycerol. DGKζ downregulation enhances inhibitors of NF-κB α (IκBα) degradation and p65 subunit phosphorylation, leading to enhanced NF-κB transcriptional activity...
October 2017: Biochimica et Biophysica Acta
https://www.readbyqxmd.com/read/28659470/hepatitis-c-virus-ns5a-targets-nucleosome-assembly-protein-nap1l1-to-control-the-innate-cellular-response
#9
Recep Emrah Çevik, Mia Cesarec, Ana Da Silva Filipe, Danilo Licastro, John McLauchlan, Alessandro Marcello
Hepatitis C virus (HCV) is a single-stranded positive-sense RNA hepatotropic virus. Despite cellular defenses, HCV is able to replicate in hepatocytes and to establish a chronic infection that could lead to severe complications and hepatocellular carcinoma. An important player in subverting the host response to HCV infection is the viral nonstructural protein NS5A, which, in addition to its role in replication and assembly, targets several pathways involved in the cellular response to viral infection. Several unbiased screens identified nucleosome assembly protein 1-like 1 (NAP1L1) as an interaction partner of HCV NS5A...
September 15, 2017: Journal of Virology
https://www.readbyqxmd.com/read/28615203/phosphorylation-of-serine-225-in-hepatitis-c-virus-ns5a-regulates-protein-protein-interactions
#10
Niluka Goonawardane, Anna Gebhardt, Christopher Bartlett, Andreas Pichlmair, Mark Harris
Hepatitis C virus (HCV) nonstructural protein 5A (NS5A) is a phosphoprotein that plays key, yet poorly defined, roles in both virus genome replication and virion assembly/release. It has been proposed that differential phosphorylation could act as a switch to regulate the various functions of NS5A; however, the mechanistic details of the role of this posttranslational modification in the virus life cycle remain obscure. We previously reported (D. Ross-Thriepland, J. Mankouri, and M. Harris, J Virol 89:3123-3135, 2015, doi:10...
September 1, 2017: Journal of Virology
https://www.readbyqxmd.com/read/28526651/disruption-of-nnat-nap1l5-and-mkrn3-dna-methylation-and-transcription-in-rabbit-parthenogenetic-fetuses
#11
Dongxu Wang, Zhiquan Liu, Haobin Yao, Yang Hao, Lina Zhou, Jian Du, Yixin Zhu, Yuxin Xu, Guodong Wang, Yuning Song, Zhanjun Li
Parthenogenetically activated oocytes cannot develop to term in mammals due to lack of paternal gene expression. Disruption of imprinted gene expression and DNA methylation status in parthenogenetic fetuses has been reported in mice and pigs, but not in rabbits. In this study, the genomic imprinting status of the paternally expressed genes Neuronatin (NNAT), Nucleosome assembly protein 1-like 5 (NAP1L5), and Makorin ring finger protein 3 (MKRN3) was compared between rabbit parthenogenetic (PA) and normally fertilized fetuses (Con) using quantitative real-time PCR (qRT-PCR) and bisulfite sequencing PCR (BSP)...
August 30, 2017: Gene
https://www.readbyqxmd.com/read/28235398/testis-specific-y-like-5-gene-expression-methylation-and-implications-for-drug-sensitivity-in-prostate-carcinoma
#12
Senthil R Kumar, Jeffrey N Bryan, Magda Esebua, James Amos-Landgraf, Tanner J May
BACKGROUND: TSPYL5, a putative tumor suppressor gene, belongs to the nucleosome assembly protein family. The chromosomal location of the TSPYL5 gene is 8Q22.1, and its exact role in prostate cancer etiology remains unclear. Further TSPYL5 gene and protein expression in prostate carcinoma cells and diseased tissues including its susceptibility for epigenetic silencing is unknown. Also, not known is the variation in TSPYL5 protein expression with regards to progression of prostatic carcinoma and its possible role in drug sensitivity...
February 24, 2017: BMC Cancer
https://www.readbyqxmd.com/read/28123501/identification-of-the-molecular-mechanisms-underlying-dilated-cardiomyopathy-via-bioinformatic-analysis-of-gene-expression-profiles
#13
Hu Zhang, Zhuo Yu, Jianchao He, Baotong Hua, Guiming Zhang
In the present study, gene expression profiles of patients with dilated cardiomyopathy (DCM) were re-analyzed with bioinformatics tools to investigate the molecular mechanisms underlying DCM. Gene expression dataset GSE3585 was downloaded from Gene Expression Omnibus, which included seven heart biopsy samples obtained from patients with DCM and five healthy controls. Differential analysis was performed using a Limma package in R to screen for differentially expressed genes (DEGs). Functional enrichment analysis was subsequently conducted for DEGs using the Database for Annotation, Visualization and Integration Discovery...
January 2017: Experimental and Therapeutic Medicine
https://www.readbyqxmd.com/read/27974641/proper-cytoskeletal-architecture-beneath-the-plasma-membrane-of-red-blood-cells-requires-ttll4
#14
Faryal Ijaz, Yasue Hatanaka, Takahiro Hatanaka, Koji Tsutsumi, Takayuki Iwaki, Kazuo Umemura, Koji Ikegami, Mitsutoshi Setou
Mammalian red blood cells (RBCs) circulate through blood vessels, including capillaries, for tens of days under high mechanical stress. RBCs tolerate this mechanical stress while maintaining their shape because of their elastic membrane skeleton. This membrane skeleton consists of spectrin-actin lattices arranged as quasi-hexagonal units beneath the plasma membrane. In this study, we found that the organization of the RBC cytoskeleton requires tubulin tyrosine ligase-like 4 (Ttll4). RBCs from Ttll4-knockout mice showed larger average diameters in smear test...
February 15, 2017: Molecular Biology of the Cell
https://www.readbyqxmd.com/read/27599637/kshv-encoded-lana-recruits-nucleosome-assembly-protein-nap1l1-for-regulating-viral-dna-replication-and-transcription
#15
Namrata Gupta, Suhani Thakker, Subhash C Verma
The establishment of latency is an essential for lifelong persistence and pathogenesis of Kaposi's sarcoma-associated herpesvirus (KSHV). Latency-associated nuclear antigen (LANA) is the most abundantly expressed protein during latency and is important for viral genome replication and transcription. Replication-coupled nucleosome assembly is a major step in packaging the newly synthesized DNA into chromatin, but the mechanism of KSHV genome chromatinization post-replication is not understood. Here, we show that nucleosome assembly protein 1-like protein 1 (NAP1L1) associates with LANA...
September 7, 2016: Scientific Reports
https://www.readbyqxmd.com/read/27591891/the-chromatin-remodelling-protein-chd1-contains-a-previously-unrecognised-c-terminal-helical-domain
#16
Biswaranjan Mohanty, Stephanie Helder, Ana P G Silva, Joel P Mackay, Daniel P Ryan
The packaging of eukaryotic DNA into nucleosomes, and the organisation of these nucleosomes into chromatin, plays a critical role in regulating all DNA-associated processes. Chromodomain helicase DNA-binding protein 1 (CHD1) is an ATP-dependent chromatin remodelling protein that is conserved throughout eukaryotes and has an ability to assemble and organise nucleosomes both in vitro and in vivo. This activity is involved in the regulation of transcription and is implicated in mammalian development and stem cell biology...
October 23, 2016: Journal of Molecular Biology
https://www.readbyqxmd.com/read/27091003/conservation-of-imprinting-of-mkrn3-and-nap1l5-in-rabbits
#17
L Yuan, L Lai, F Duan, M Chen, J Deng, Z Li
Maternally imprinted genes of makorin ring finger protein 3 (MKRN3) and nucleosome assembly protein 1-like 5 (NAP1L5) have been identified in many species but have not yet been investigated in rabbits. In this study, a polymorphism-based approach and bisulfite-sequencing PCR (BSP) were used to determine the imprinting status of MKRN3 and NAP1L5 in rabbits. The single nucleotide polymorphism (SNP)-based sequencing results demonstrated that MKRN3 and NAP1L5 were expressed preferentially from the paternal allele...
August 2016: Animal Genetics
https://www.readbyqxmd.com/read/27074396/effect-of-the-spiroiminodihydantoin-lesion-on-nucleosome-stability-and-positioning
#18
Erika M Norabuena, Sara Barnes Williams, Margaret A Klureza, Liana J Goehring, Brian Gruessner, Mala L Radhakrishnan, Elizabeth R Jamieson, Megan E Núñez
DNA is constantly under attack by oxidants, generating a variety of potentially mutagenic covalently modified species, including oxidized guanine base products. One such product is spiroiminodihydantoin (Sp), a chiral, propeller-shaped lesion that strongly destabilizes the DNA helix in its vicinity. Despite its unusual shape and thermodynamic effect on double-stranded DNA structure, DNA duplexes containing the Sp lesion form stable nucleosomes upon being incubated with histone octamers. Indeed, among six different combinations of lesion location and stereochemistry, only two duplexes display a diminished ability to form nucleosomes, and these only by ∼25%; the other four are statistically indistinguishable from the control...
April 26, 2016: Biochemistry
https://www.readbyqxmd.com/read/26967585/identification-of-candidate-genes-in-atopic-dermatitis-based-on-bioinformatic-methods
#19
Yingguo Ding, Xia Shao, Xiaomin Li, You Zhai, Yu Zhang, Su Wang, Hong Fang
BACKGROUND: Atopic dermatitis (AD) is a chronic or relapsing inflammatory disorder of the skin that frequently precedes asthma and allergic disorders. This study aimed to identify candidate genes related to AD using bioinformatic methods. METHODS: The microarray data of GSE32924, including 12 nonlesional AD (ANL) and 13 lesional AD (AL) skin samples obtained from 14 patients with AD as well as eight other normal human skin samples, was downloaded from the Gene Expression Omnibus database...
July 2016: International Journal of Dermatology
https://www.readbyqxmd.com/read/26929406/loss-of-interdependent-binding-by-the-foxo1-and-foxa1-a2-forkhead-transcription-factors-culminates-in-perturbation-of-active-chromatin-marks-and-binding-of-transcriptional-regulators-at-insulin-sensitive-genes
#20
Akua Yalley, Daniel Schill, Mitsutoki Hatta, Nicole Johnson, Lisa Ann Cirillo
FoxO1 binds to insulin response elements located in the promoters of insulin-like growth factor-binding protein 1 (IGFBP1) and glucose-6-phosphatase (G6Pase), activating their expression. Insulin-mediated phosphorylation of FoxO1 promotes cytoplasmic translocation, inhibiting FoxO1-mediated transactivation. We have previously demonstrated that FoxO1 opens and remodels chromatin assembled from the IGFBP1 promoter via a highly conserved winged helix motif. This finding, which established FoxO1 as a "pioneer" factor, suggested a model whereby FoxO1 chromatin remodeling at regulatory targets facilitates binding and recruitment of additional regulatory factors...
April 15, 2016: Journal of Biological Chemistry
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