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https://www.readbyqxmd.com/read/29664738/pharmacological-induction-of-hypoxia-inducible-transcription-factor-arnt-attenuates-chronic-kidney-failure
#1
Björn Tampe, Désirée Tampe, Gunsmaa Nyamsuren, Friederike Klöpper, Gregor Rapp, Anne Kauffels, Thomas Lorf, Elisabeth M Zeisberg, Gerhard A Müller, Raghu Kalluri, Samy Hakroush, Michael Zeisberg
Progression of chronic kidney disease associated with progressive fibrosis and impaired tubular epithelial regeneration is still an unmet biomedical challenge, because once chronic lesions have manifested, no effective therapies are available as of yet for clinical use. Prompted by various studies across multiple organs demonstrating that preconditioning regimens to induce endogenous regenerative mechanisms protect various organs from later incurring acute injuries, we here aimed to gain insights into the molecular mechanisms underlying successful protection and to explore whether such pathways could be utilized to inhibit progression of chronic organ injury...
April 17, 2018: Journal of Clinical Investigation
https://www.readbyqxmd.com/read/29662614/transcriptional-orchestration-of-mitochondrial-homeostasis-in-a-cellular-model-of-pgc-1-related-coactivator-dependent-thyroid-tumor
#2
Solenne Dumont, Soazig Le Pennec, Audrey Donnart, Raluca Teusan, Marja Steenman, Catherine Chevalier, Rémi Houlgatte, Frédérique Savagner
The PGC-1 (Peroxisome proliferator-activated receptor Gamma Coactivator-1) family of coactivators (PGC-1α, PGC-1β, and PRC) plays a central role in the transcriptional control of mitochondrial biogenesis and oxidative phosphorylation (OXPHOS) processes. These coactivators integrate mitochondrial energy production into cell metabolism using complementary pathways. The XTC.UC1 cell line is a mitochondria-rich model of thyroid tumors whose biogenesis is almost exclusively dependent on PRC. Here we aim to propose an integrative view of the cellular pathways regulated by PRC through integration of cDNA and miRNA microarray data and chromatin immunoprecipitation results obtained from XTC...
March 23, 2018: Oncotarget
https://www.readbyqxmd.com/read/29624717/sirt3-restricts-hbv-transcription-and-replication-via-epigenetic-regulation-of-cccdna-involving-suv39h1-and-setd1a-histone-methyltransferases
#3
Ji-Hua Ren, Jie-Li Hu, Sheng-Tao Cheng, Hai-Bo Yu, Vincent Kam Wai Wong, Betty Yuen Kwan Law, Yong-Feng Yang, Ying Huang, Yi Liu, Wei-Xian Chen, Xue-Fei Cai, Hua Tang, Yuan Hu, Wen-Lu Zhang, Xiang Liu, Quan-Xin Long, Li Zhou, Na-Na Tao, Hong-Zhong Zhou, Qiu-Xia Yang, Fang Ren, Lin He, Rui Gong, Ai-Long Huang, Juan Chen
Hepatitis B virus (HBV) infection remains a major health problem worldwide. Maintenance of the covalently closed circular DNA (cccDNA) which serves as a template for HBV RNA transcription is responsible for the failure of eradicating chronic HBV during current antiviral therapy. cccDNA is assembled with cellular histone proteins into chromatin, but little is known about the regulation of HBV chromatin by histone posttranslational modifications. In this study, we identified SIRT3 as a host factor restricting HBV transcription and replication by screening seven members of Sirtuin family which is the class III histone deacetylase...
April 6, 2018: Hepatology: Official Journal of the American Association for the Study of Liver Diseases
https://www.readbyqxmd.com/read/29620222/mir%C3%A2-29a-suppresses-il%C3%A2-13%C3%A2-induced-cell-invasion-by-inhibiting-yy1-in-the-akt-pathway-in-lung-adenocarcinoma-a549-cells
#4
Yu Zhang, Shujin He, Renmei Mei, Yurong Kang, Jing Duan, Ran Wei, Chuqi Xiang, Yemeng Wu, Xiangtong Lu, Zhenyu Cai, Lixia Xiong
IL‑13 is a proinflammatory cytokine associated with multiple pathological conditions and the promotion of metastasis in lung cancer. Previous studies have demonstrated that IL‑13 and YY1 are associated with PI3K/AKT signaling. In addition, miR‑29a has been found to play a critical role in cell invasion in lung cancer. However, the molecular mechanism of miR‑29a underlying its involvement in IL‑13‑induced lung cancer cell invasion remains largely unknown. In the present study, we aimed to investigate the role of miR‑29a in cell invasion mediated by IL‑13 in lung cancer...
April 4, 2018: Oncology Reports
https://www.readbyqxmd.com/read/29616858/role-of-yin-yang-1-yy1-in-the-transcription-regulation-of-the-multi-drug-resistance-mdr1-gene
#5
Gabriela Antonio-Andrés, Jesus Rangel-Santiago, Belen Tirado-Rodríguez, Gustavo U Martinez-Ruiz, Miguel Klunder-Klunder, Mario I Vega, Briceida Lopez-Martinez, Elva Jiménez-Hernández, Jose Torres Nava, Aurora Medina-Sanson, Sara Huerta-Yepez
Resistance to chemotherapy hinders the successful treatment of acute lymphoblastic leukemia (ALL). The multi-drug resistance-1 (MDR1/ABCB1) gene encodes P-glycoprotein (P-gp), which plays an important role in chemoresistance; however, its transcriptional regulation remains unclear. We investigated the role of YY1 in the regulation of MDR1 and its relation to ALL outcomes. Analysis of the MDR1 promoter revealed four putative YY1-binding sites, which we analyzed using a reporter system and ChIP analysis. YY1 silencing resulted in the inhibition of MDR1 expression and function...
April 4, 2018: Leukemia & Lymphoma
https://www.readbyqxmd.com/read/29590119/nf90-ilf3-is-a-transcription-factor-that-promotes-proliferation-over-differentiation-by-hierarchical-regulation-in-k562-erythroleukemia-cells
#6
Ting-Hsuan Wu, Lingfang Shi, Jessika Adrian, Minyi Shi, Ramesh V Nair, Michael P Snyder, Peter N Kao
NF90 and splice variant NF110 are DNA- and RNA-binding proteins encoded by the Interleukin enhancer-binding factor 3 (ILF3) gene that have been established to regulate RNA splicing, stabilization and export. The roles of NF90 and NF110 in regulating transcription as chromatin-interacting proteins have not been comprehensively characterized. Here, chromatin immunoprecipitation followed by deep sequencing (ChIP-seq) identified 9,081 genomic sites specifically occupied by NF90/NF110 in K562 cells. One third of NF90/NF110 peaks occurred at promoters of annotated genes...
2018: PloS One
https://www.readbyqxmd.com/read/29576529/sequential-enhancer-sequestration-dysregulates-recombination-center-formation-at-the-igh-locus
#7
Xiang Qiu, Gita Kumari, Tatiana Gerasimova, Hansen Du, Lawal Labaran, Amit Singh, Supriyo De, William H Wood, Kevin G Becker, Weiqiang Zhou, Hongkai Ji, Ranjan Sen
Immunoglobulin heavy-chain (IgH) genes are assembled by DNA rearrangements that juxtapose a variable (VH ), a diversity (DH ), and a joining (JH ) gene segment. Here, we report that in the absence of intergenic control region 1 (IGCR1), the intronic enhancer (Eμ) associates with the next available CTCF binding site located close to VH 81X via putative heterotypic interactions involving YY1 and CTCF. The alternate Eμ/VH 81X loop leads to formation of a distorted recombination center and altered DH rearrangements and disrupts chromosome conformation that favors distal VH recombination...
March 8, 2018: Molecular Cell
https://www.readbyqxmd.com/read/29567711/early-life-experience-drives-structural-variation-of-neural-genomes-in-mice
#8
Tracy A Bedrosian, Carolina Quayle, Nicole Novaresi, Fred H Gage
The brain is a genomic mosaic owing to somatic mutations that arise throughout development. Mobile genetic elements, including retrotransposons, are one source of somatic mosaicism in the brain. Retrotransposition may represent a form of plasticity in response to experience. Here, we use droplet digital polymerase chain reaction to show that natural variations in maternal care mediate the mobilization of long interspersed nuclear element-1 (LINE-1 or L1) retrotransposons in the hippocampus of the mouse brain...
March 23, 2018: Science
https://www.readbyqxmd.com/read/29564133/suitability-of-yin-yang-1-transcript-and-protein-levels-for-biomarker-studies-in-b-cell-non-hodgkin-lymphoma
#9
Jéssica Arribas Arranz, Dalia Nilufar Winter, Hans Günter Drexler, Sonja Eberth
Background: Yin Yang 1 (YY1) is a transcription factor that plays an important role during all stages of B cell differentiation. Several studies reported upregulation of YY1 in B cell derived lymphoma, indicating that it might act as an oncogene. Furthermore, aberrant YY1 expression has been associated with survival in some entities of B cell non-Hodgkin lymphoma (B-NHL), suggesting that YY1 could be a valuable biomarker in B-NHL. However, studies are controversial and methodologically disparate, partially because some studies are based on transcript levels while others rely on YY1 protein data...
2018: Biomarker Research
https://www.readbyqxmd.com/read/29549306/circhipk3-promotes-colorectal-cancer-growth-and-metastasis-by-sponging-mir-7
#10
Kaixuan Zeng, Xiaoxiang Chen, Mu Xu, Xiangxiang Liu, Xiuxiu Hu, Tao Xu, Huiling Sun, Yuqin Pan, Bangshun He, Shukui Wang
Mounting evidences indicate that circular RNAs (circRNAs) have a vital role in human diseases, especially cancers. More recently, circHIPK3, a particularly abundant circRNA, was proposed to be involved in tumorigenesis. However, its role in colorectal cancer (CRC) has not been explored. In this study, we found circHIPK3 was significantly upregulated in CRC tissues and cell lines, at least in part, due to c-Myb overexpression and positively correlated with metastasis and advanced clinical stage. Moreover, Cox multivariate survival analysis showed that high-level expression of circHIPK3 was an independent prognostic factor of poor overall survival (OS) in CRC (hazard ratio [HR] = 2...
March 16, 2018: Cell Death & Disease
https://www.readbyqxmd.com/read/29545108/yinyang1-deficiency-ameliorates-joint-inflammation-in-a-murine-model-of-rheumatoid-arthritis-by-modulating-th17-cell-activation
#11
Jeong-Eun Kwon, Seon-Yeong Lee, Hyeon-Beom Seo, Young-Mee Moon, Jun-Geol Ryu, Kyung-Ah Jung, Joo-Yeon Jhun, Jin-Sil Park, Soo-Seok Hwang, Joo-Myeong Kim, Gap Ryol Lee, Sung-Hwan Park, Mi-La Cho
Yin Yang 1 (YY1) is a ubiquitously expressed transcription factor that functions in cooperation with various cofactors to regulate gene expression. In the immune system, YY1 enhances cytokine production and T helper (Th) 2 effector cell differentiation, resulting in the activation of inflammation. However, no studies have reported the role of YY1 in Th17 cell regulation, which is implicated in rheumatoid arthritis (RA). We investigated the expression of YY1 in Th17 cells in vitro and revealed increased levels of YY1 mRNA and protein...
March 12, 2018: Immunology Letters
https://www.readbyqxmd.com/read/29543139/effect-of-contractile-activity-on-pgc-1%C3%AE-transcription-in-young-and-aged-skeletal-muscle
#12
Heather N Carter, Marion Pauly, Liam D Tryon, David A Hood
Mitochondrial impairments are often noted in aged skeletal muscle. The transcriptional coactivator PGC-1α is integral to maintaining mitochondria, and its expression declines in aged muscle. It remains unknown whether this is due to a transcriptional deficit during aging. Our study examined PGC-1α transcription in muscle from young and old F344BN rats. Using a rat PGC-1α promoter-reporter construct, we found that PGC-1α transcription was reduced by ~65% in aged TA muscle, accompanied by decreases in PGC-1α mRNA and transcript stability...
March 15, 2018: Journal of Applied Physiology
https://www.readbyqxmd.com/read/29536689/-transcription-factors-analysis-of-subchondral-bone-in-early-experimental-osteoarthritis-based-on-gene-expression-profiles
#13
Rong-Kai Zhang, Guo-Wei Li, Dong Jiang, Da-Wei Zhang, Bing Yu, Lu-Kun Yang
OBJECTIVE: To identify the master transcription factors (TF) that might be responsible for the gene expression alteration of OA. METHODS: Raw expression data for rat OA model(GSE30322) was downloaded from NCBI GEO database. Microarray data analysis for rat and human was carried out separately using functions from limma packagein R, gene expression was considered as significantly changed between conditions if adjusted P -value<0.05 and the absolute value of fold change>=2...
February 25, 2018: Zhongguo Gu Shang, China Journal of Orthopaedics and Traumatology
https://www.readbyqxmd.com/read/29536411/mir-192-5p-suppresses-the-growth-of-bladder-cancer-cells-via-targeting-yin-yang-1
#14
Decai Ji, Lining Jiang, Yingjie Li
Bladder cancer has been identified as one of the most malignant cancers with high incidence and mortality. The underlying mechanisms by which regulate the tumorigenesis of bladder cancer deserve further investigation. Here, we found that miR-192-5p was downregulated in human bladder cancer cell lines and tissues. Overexpression of miR-192-5p significantly inhibited the growth of bladder cancer cells, while depletion of miR-192-5p exerted opposite effect. Bioinformatics analysis and molecular mechanism study identified that miR-192-5p targeted the transcription factor Yin Yang 1 (YY1) and decreased the expression level of YY1...
March 13, 2018: Human Cell
https://www.readbyqxmd.com/read/29503092/yy1-positively-regulates-transcription-by-targeting-promoters-and-super-enhancers-through-the-baf-complex-in-embryonic-stem-cells
#15
Jia Wang, Xingui Wu, Chao Wei, Xin Huang, Qian Ma, Xiaona Huang, Francesco Faiola, Diana Guallar, Miguel Fidalgo, Tingyuan Huang, Di Peng, Li Chen, Haopeng Yu, Xingyu Li, Junyi Sun, Xinyi Liu, Xiaoxia Cai, Xiao Chen, Ling Wang, Jian Ren, Jianlong Wang, Junjun Ding
Yin Yang 1 (YY1) regulates early embryogenesis and adult tissue formation. However, the role of YY1 in stem cell regulation remains unclear. YY1 has a Polycomb group (PcG) protein-dependent role in mammalian cells. The PcG-independent functions of YY1 are also reported, although their underlying mechanism is still undefined. This paper reports the role of YY1 and BAF complex in the OCT4-mediated pluripotency network in mouse embryonic stem cells (mESCs). The interaction between YY1 and BAF complex promotes mESC proliferation and pluripotency...
April 10, 2018: Stem Cell Reports
https://www.readbyqxmd.com/read/29500401/transcription-factor-yy1-is-essential-for-inkt-cell-development
#16
Xijun Ou, Jianxin Huo, Yuhan Huang, Yan-Feng Li, Shengli Xu, Kong-Peng Lam
Invariant natural killer T (iNKT) cells develop from CD4+ CD8+ double-positive (DP) thymocytes and express an invariant Vα 14-Jα 18 T-cell receptor (TCR) α-chain. Generation of these cells requires the prolonged survival of DP thymocytes to allow for Vα 14-Jα 18 gene rearrangements and strong TCR signaling to induce the expression of the iNKT lineage-specific transcription factor PLZF. Here, we report that the transcription factor Yin Yang 1 (YY1) is essential for iNKT cell formation. Thymocytes lacking YY1 displayed a block in iNKT cell development at the earliest progenitor stage...
March 2, 2018: Cellular & Molecular Immunology
https://www.readbyqxmd.com/read/29484433/the-polyaromatic-hydrocarbon-%C3%AE-naphthoflavone-alters-binding-of-yy1-sp1-and-sp3-transcription-factors-to-the-dp71-promoter-in-hepatic-cells
#17
Carolina Becerril-Esquivel, Katia Peñuelas-Urquides, Erik Blancas-Sánchez, Pablo Zapata-Benavides, Beatriz Silva-Ramírez, Arturo Chávez-Reyes, Fabiola Castorena-Torres, Bulmaro Cisneros, Mario Bermúdez de León
The smallest product of the Duchenne muscular dystrophy gene, dystrophin (Dp)71, is ubiquitously expressed in nonmuscle tissues. We previously showed that Dp71 expression in hepatic cells is modulated in part by stimulating factor 1 (Sp1), stimulating protein 3 (Sp3), and yin yang 1 (YY1) transcription factors, and that the polyaromatic hydrocarbon, β-naphthoflavone (β‑NF), downregulates Dp71 expression. The aim of the present study was to determine whether β‑NF represses Dp71 expression by altering mRNA stability or its promoter activity...
February 21, 2018: Molecular Medicine Reports
https://www.readbyqxmd.com/read/29477140/aurka-suppresses-leukemic-thp-1-cell-differentiation-through-inhibition-of-the-kdm6b-pathway
#18
Jin Woo Park, Hana Cho, Hyein Oh, Ji-Young Kim, Sang-Beom Seo
Aberrations in histone modifications are being studied in mixed-lineage leukemia (MLL)-AF9-driven acute myeloid leukemia (AML). In this study, we focused on the regulation of the differentiation of the MLL-AF9 type AML cell line THP-1. We observed that, upon phorbol 12-myristate 13-acetate (PMA) treatment, THP-1 cells differentiated into monocytes by down-regulating Aurora kinase A (AURKA), resulting in a reduction in H3S10 phosphorylation. We revealed that the AURKA inhibitor alisertib accelerates the expression of the H3K27 demethylase KDM6B, thereby dissociating AURKA and YY1 from the KDM6B promoter region...
February 23, 2018: Molecules and Cells
https://www.readbyqxmd.com/read/29470526/expression-of-yin-yang-1-in-cervical-cancer-and-its-correlation-with-e-cadherin-expression-and-hpv16-e6
#19
Wanxue Wang, Zhenni Yue, Zhengping Tian, Yiran Xie, Jiamiao Zhang, Yuanping She, Bing Yang, Yuan Ye, Yihua Yang
The molecular mechanisms of normal cervical squamous epithelium advancing to cervical intraepithelial neoplasia (CIN) and eventually to cervical squamous cell carcinoma (CSCC) are largely unknown. This study explored abnormal expression of Yin Yang 1 (YY1) in cervical cancer and its correlation with the expression of E-cadherin and human papillomavirus (HPV) 16 E6. YY1, E-cadherin and HPV16 E6 expression were detected by immunohistochemistry in 90 cervical tissue specimens collected from 30 patients with hysteromyoma, 15 patients with CIN I, 15 patients with CIN II-III, and 30 patients with CSCC...
2018: PloS One
https://www.readbyqxmd.com/read/29467239/frequency-and-consequence-of-the-recurrent-yy1-p-t372r-mutation-in-sporadic-insulinomas
#20
Vaishali I Parekh, Sita D Modali, James Welch, William Simonds, Lee Scott Weinstein, Electron Kebebew, Sunita K Agarwal
Extract: Pancreatic neuroendocrine tumors (PNETs/pNETs/p-NETs/PanNETs) are rare endocrine neoplasms that can be either functioning tumors that secrete hormones characteristic of their endocrine cell of origin, or nonfunctioning tumors. The most common functioning PNETs are the insulin-secreting b-cell tumors (insulinomas) that are mainly sporadic, but may also occur in 10% of patients with the hereditary tumor syndrome multiple endocrine neoplasia type 1 (MEN1) (OMIM ID: 131100). Patients with the MEN1 syndrome carry a heterozygous germline inactivating mutation in the MEN1 tumor suppressor gene and specific somatic loss of the normal MEN1 allele, leading to endocrine tumors mainly of the parathyroids, pituitary and pancreas (PNETs)...
February 21, 2018: Endocrine-related Cancer
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