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https://www.readbyqxmd.com/read/28088787/hint2-downregulation-promotes-colorectal-carcinoma-migration-and-metastasis
#1
Weihua Li, Shaoxin Cai, Le Wang, Changshun Yang, Biaohuan Zhou, Huan Wang
Histidine triad nucleotide-binding 2 (HINT2), a member of the histidine triad proteins family, sensitizes cells to apoptosis in hepatocellular carcinoma. Here, we showed that HINT2 expression is lower in primary colorectal cancer (CRC) and metastasis tissues than in normal colorectal tissues, and that HINT2 abundance is inversely correlated with CRC tumor stage. Treating CRC cells with 5-aza-2'-deoxycytidine, a demethylating agent, upregulated HINT2, suggesting HINT2 downregulation is caused by methylation of the gene promoter...
January 10, 2017: Oncotarget
https://www.readbyqxmd.com/read/28087712/pdx1-dynamically-regulates-pancreatic-ductal-adenocarcinoma-initiation-and-maintenance
#2
Nilotpal Roy, Kenneth K Takeuchi, Jeanine M Ruggeri, Peter Bailey, David Chang, Joey Li, Laura Leonhardt, Sapna Puri, Megan T Hoffman, Shan Gao, Christopher J Halbrook, Yan Song, Mats Ljungman, Shivani Malik, Christopher V E Wright, David W Dawson, Andrew V Biankin, Matthias Hebrok, Howard C Crawford
Aberrant activation of embryonic signaling pathways is frequent in pancreatic ductal adenocarcinoma (PDA), making developmental regulators therapeutically attractive. Here we demonstrate diverse functions for pancreatic and duodenal homeobox 1 (PDX1), a transcription factor indispensable for pancreas development, in the progression from normal exocrine cells to metastatic PDA. We identify a critical role for PDX1 in maintaining acinar cell identity, thus resisting the formation of pancreatic intraepithelial neoplasia (PanIN)-derived PDA...
December 15, 2016: Genes & Development
https://www.readbyqxmd.com/read/28087637/retinoic-acid-receptor-regulation-of-epimorphic-and-homeostatic-regeneration-in-the-axolotl
#3
Matthew Nguyen, Pankhuri Singhal, Judith Piet, Sandra J Shefelbine, Malcolm Maden, S Randal Voss, James R Monaghan
Salamanders are capable of regenerating amputated limbs by generating a mass of lineage-restricted cells called a blastema. Blastemas only generate structures distal to their origin unless treated with retinoic acid (RA), which results in proximodistal (PD) limb duplications. Little is known about the transcriptional network that regulates PD duplication. In this study, we target specific retinoic acid receptors (RARs) to either PD duplicate (RA treatment or RARγ agonist) or truncate (RARβ antagonist) regenerating limbs...
January 13, 2017: Development
https://www.readbyqxmd.com/read/28074437/aberrant-endometrial-dna-methylome-of-homeobox-a10-and-catechol-o-methyltransferase-in-endometriosis
#4
Fei Ji, Xinhua Yang, Yan He, Hui Wang, Aixingzi Aili, Yan Ding
PURPOSE: Differential methylation of both HOXA10 and catechol-O-methyltransferase (COMT) has been reported in different endometrium disorders, and the two genes are linked through the estrogen pathway. The current study investigates the DNA methylation of HOXA10 and COMT in ectopic and eutopic endometrial tissues and its correlation with and the occurrence of endometriosis in women from Xinjiang province in China. METHODS: In the current study, 120 patients with endometriosis were recruited from our hospital between January 2011 and June 2014...
January 10, 2017: Journal of Assisted Reproduction and Genetics
https://www.readbyqxmd.com/read/28072499/in-silico-analysis-of-the-deleterious-nssnp-s-missense-in-the-homeobox-domain-of-human-hoxb13-gene-responsible-for-hereditary-prostate-cancer
#5
Gopalakrishnan Chandrasekaran, Eu Chang Hwang, Taek Won Kang, Dongdeuk Kwon, Kwangsung Park, Je-Jung Lee, Vinoth-Kumar Lakshmanan
The human HOXB13 gene encodes a transcription factor containing a DNA-binding homeobox domain and a HoxA13 N-terminal domain. SNP is considered to be the primary genetic cause for hereditary prostate cancer (PCa). The study of functional nsSNP's would give an insight into the exact cause underlying the onset of hereditary PCa and possible methodologies for the cure or early management of the disease. Several in silico tools were used to screen and map the deleterious nsSNP's to the protein structure for predicting the structure-function effects...
January 10, 2017: Chemical Biology & Drug Design
https://www.readbyqxmd.com/read/28069602/oncogenic-zeb2-activation-drives-sensitivity-towards-kdm1a-inhibition-in-t-cell-acute-lymphoblastic-leukemia
#6
Steven Goossens, Sofie Peirs, Wouter Van Loocke, Jueqiong Wang, Mina Takawy, Filip Matthijssens, Stefan E Sonderegger, Katharina Haigh, Thao Nguyen, Niels Vandamme, Magdaline Costa, Catherine Carmichael, Filip Van Nieuwerburgh, Dieter Deforce, Oded Kleifeld, David J Curtis, Geert Berx, Pieter Van Vlierberghe, Jody J Haigh
Elevated expression of the Zinc finger E-box binding homeobox transcription factor-2 (ZEB2) is correlated with poor prognosis and patient outcome in a variety of human cancer subtypes. Using a conditional gain-of-function mouse model, we recently demonstrated that ZEB2 is an oncogenic driver of immature T-cell acute lymphoblastic leukemia (T-ALL), a heterogenic subgroup of human leukemia characterized by a high incidence of remission failure or hematological relapse after conventional chemotherapy. Here, we identified the Lysine-specific demethylase KDM1A as a novel interaction partner of ZEB2 and demonstrated that mouse and human T-ALLs with increased ZEB2 levels critically depend on KDM1A activity for survival...
January 9, 2017: Blood
https://www.readbyqxmd.com/read/28068426/screening-of-candidate-leaf-morphology-genes-by-integration-of-qtl-mapping-and-rna-sequencing-technologies-in-oilseed-rape-brassica-napus-l
#7
Hongju Jian, Bo Yang, Aoxiang Zhang, Li Zhang, Xinfu Xu, Jiana Li, Liezhao Liu
Leaf size and shape play important roles in agronomic traits, such as yield, quality and stress responses. Wide variations in leaf morphological traits exist in cultivated varieties of many plant species. By now, the genetics of leaf shape and size have not been characterized in Brassica napus. In this study, a population of 172 recombinant inbred lines (RILs) was used for quantitative trait locus (QTL) analysis of leaf morphology traits. Furthermore, fresh young leaves of extreme lines with more leaf lobes (referred to as 'A') and extreme lines with fewer lobes (referred to as 'B') selected from the RIL population and leaves of dissected lines (referred to as 'P') were used for transcriptional analysis...
2017: PloS One
https://www.readbyqxmd.com/read/28063956/differentiation-of-mouse-enteric-nervous-system-progenitor-cells-is-controlled-by-endothelin-3-and-requires-regulation-of-ednrb-by-sox10-and-zeb2
#8
Yuli Watanabe, Laure Stanchina, Laure Lecerf, Nadjet Gacem, Andrea Conidi, Viviane Baral, Veronique Pingault, Danny Huylebroeck, Nadege Bondurand
BACKGROUND & AIMS: Maintenance and differentiation of progenitor cells in the developing enteric nervous system (ENS) are controlled by molecules such as the signaling protein endothelin 3 (EDN3), its receptor (the endothelin receptor type B, EDNRB), and the transcription factors SRY-box 10 (SOX10) and zinc finger E-box binding homeobox 2 (ZEB2). We used enteric progenitor cell (EPC) cultures and mice to study the roles of these proteins in enteric neurogenesis and their cross regulation...
January 4, 2017: Gastroenterology
https://www.readbyqxmd.com/read/28059449/irx3-and-bmp2-regulate-mouse-mesenchymal-cell-chondrogenic-differentiation-in-both-a-sox9-dependent-and-independent-manner
#9
Yoshihiro Tamamura, Kenichi Katsube, Hisashi Mera, Maki Itokazu, Shigeyuki Wakitani
Sox9, a master regulator of cartilage development, controls the cell fate decision to differentiate from mesenchymal to chondrogenic cells. In addition, Sox9 regulates the proliferation and differentiation of chondrocytes, as well as the production of cartilage-specific proteoglycans. The existence of Sox9-independent mechanisms in cartilage development remains to be determined. Here, we attempted to identify genes involved in such putative mechanisms via microarray analysis using a mouse chondrogenic cell line, N1511...
January 6, 2017: Journal of Cellular Physiology
https://www.readbyqxmd.com/read/28059119/dysregulation-of-wti-kts-is-associated-with-the-kidney-specific-effects-of-the-lmx1b-r246q-mutation
#10
Gentzon Hall, Brandon Lane, Megan Chryst-Ladd, Guanghong Wu, Jen-Jar Lin, XueJun Qin, Elizabeth R Hauser, Rasheed Gbadegesin
Mutations in the LIM homeobox transcription factor 1-beta (LMX1B) are a cause of nail patellar syndrome, a condition characterized by skeletal changes, glaucoma and focal segmental glomerulosclerosis. Recently, a missense mutation (R246Q) in LMX1B was reported as a cause of glomerular pathologies without extra-renal manifestations, otherwise known as nail patella-like renal disease (NPLRD). We have identified two additional NPLRD families with the R246Q mutation, though the mechanisms by which LMX1BR246Q causes a renal-specific phenotype is unknown...
January 6, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28055225/overexpression-of-prox1-induces-the-differentiation-of-human-adipose-derived-stem-cells-into-lymphatic-endothelial-like-cells-in-vitro
#11
Jingcheng Deng, Tingting Dai, Yiyu Sun, Qi Zhang, Zhaohua Jiang, Shengli Li, Weigang Cao
Constant levels of homeobox transcription factor Prox1 expression are required throughout the life of lymphatic endothelial cells (LECs) to maintain their differentiated identity. Recent studies have demonstrated that using human LECs for cell transplantation therapy may improve secondary lymphedema in a nude rat model. However, the application is currently limited by the low yield of LECs. In this study, Prox1 was overexpressed in human adipose tissue-derived stem cells (hADSCs) by using the transfection of lentiviral vectors to induce the differentiation of hADSCs to LECs...
January 5, 2017: Cellular Reprogramming
https://www.readbyqxmd.com/read/28038461/homeobox-a11-hypermethylation-indicates-unfavorable-prognosis-in-breast-cancer
#12
Bingshu Xia, Ming Shan, Ji Wang, Zhenbin Zhong, Jingshu Geng, Xiaohui He, Tung Vu, Dekai Zhang, Da Pang
Homeobox A11 (HOXA11) is one of the hypermethylated genes in breast cancer and its function in breast tumorigenesis remains elusive. In this study, we analyzed the methylation status of HOXA11 in 264 paired breast cancer and normal tissue as well as in matched serum samples by MethyLight assay. Further, the function of HOXA11 in breast tumorigenesis was analyzed by cell proliferation and migration assays. We found that HOXA11 was hypermethylated in cancer tissues (45.08%), especially in invasive ductal carcinomas (P<0...
December 25, 2016: Oncotarget
https://www.readbyqxmd.com/read/28035380/prox1-promotes-human-glioblastoma-cell-proliferation-and-invasion-via-activation-of-the-nuclear-factor-%C3%AE%C2%BAb-signaling-pathway
#13
Xuchang Xu, Xuefeng Wan, Xinting Wei
Prospero homeobox protein 1 (PROX1) is highly expressed in high-grade malignant astrocytic gliomas. However, the role of PROX1 in the pathogenesis of glioblastoma multiforme (GBM) remains unclear. The present study overexpressed PROX1 in human GBM cell lines and examined its effects on cell growth, tumorigenesis, and invasiveness. In addition, the involvement of the nuclear factor‑κB (NF‑κB) signaling pathway in the action of PROX1 was examined. It was identified that overexpression of PROX1 significantly increased the proliferation and colony formation of glioblastoma cells, compared with empty vector‑transfected controls...
December 27, 2016: Molecular Medicine Reports
https://www.readbyqxmd.com/read/28028241/abscisic-acid-signaling-is-controlled-by-a-branched1-hd-zip-i-cascade-in-arabidopsis-axillary-buds
#14
Eduardo González-Grandío, Alice Pajoro, José M Franco-Zorrilla, Carlos Tarancón, Richard G H Immink, Pilar Cubas
Shoot-branching patterns determine key aspects of plant life and are important targets for crop breeding. However, we are still largely ignorant of the genetic networks controlling locally the most important decision during branch development: whether the axillary bud, or branch primordium, grows out to give a lateral shoot or remains dormant. Here we show that, inside the buds, the TEOSINTE BRANCHED1, CYCLOIDEA, PCF (TCP) transcription factor BRANCHED1 (BRC1) binds to and positively regulates the transcription of three related Homeodomain leucine zipper protein (HD-ZIP)-encoding genes: HOMEOBOX PROTEIN 21 (HB21), HOMEOBOX PROTEIN 40 (HB40), and HOMEOBOX PROTEIN 53 (HB53)...
December 27, 2016: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/28027501/disruption-of-homeobox-containing-gene-hbx9-results-in-the-deregulation-of-prestalk-cell-patterning-in-dictyostelium-discoideum
#15
Himanshu Mishra, Pooja Bhadoriya, Shweta Saran
We have earlier classified the homeobox containing genes from Dictyostelium discoideum and identified 5 genes belonging to the TALE class. Here, we have characterized hbx9, a member of TALE class. In situ hybridization results show it to be preferentially expressed in the prestalkA (pstA) cells but not in the prestalkO (pstO) cells. Disruption of the hbx9 gene in Ax2 cells delay initiation of development and also slows cell proliferation. There was decreased cadA expression during the development of hbx9(-) cells, which results in inappropriate cell contacts, altered cell motility and patterning properties...
December 24, 2016: Differentiation; Research in Biological Diversity
https://www.readbyqxmd.com/read/28026853/lyve1-and-prox1-in-the-reconstruction-of-hepatic-sinusoids-after-partial-hepatectomy-in-mice
#16
Fanwei Meng
Revascularization is crucial to liver regeneration after liver injury, but the process remains unclear. This study investigated changes in the levels and distribution of lymphatic vessel endothelial hyaluronan receptor 1 (LYVE1) and prospero homeobox protein 1 (PROX1) in liver tissue sections after partial hepatectomy in mice. Mice were subjected to partial hepatectomy. Control animals were sham-operated. From days 1 through 8, the remaining liver tissues were collected from 8 animals each day. Histology showed that after partial hepatectomy, the remaining liver tissue samples underwent initial degeneration and then hepatocyte proliferation and regeneration...
December 27, 2016: Folia Morphologica (Warsz)
https://www.readbyqxmd.com/read/28025541/mir-203-and-mir-320-regulate-bone-morphogenetic-protein-2-induced-osteoblast-differentiation-by-targeting-distal-less-homeobox-5-dlx5
#17
Navya Laxman, Hans Mallmin, Olle Nilsson, Andreas Kindmark
MicroRNAs (miRNAs) are a family of small, non-coding RNAs (17-24 nucleotides), which regulate gene expression either by the degradation of the target mRNAs or inhibiting the translation of genes. Recent studies have indicated that miRNA plays an important role in regulating osteoblast differentiation. In this study, we identified miR-203 and miR-320b as important miRNAs modulating osteoblast differentiation. We identified Dlx5 as potential common target by prediction algorithms and confirmed this by knock-down and over expression of the miRNAs and assessing Dlx5 at mRNA and protein levels and specificity was verified by luciferase reporter assays...
December 23, 2016: Genes
https://www.readbyqxmd.com/read/28017720/retinal-expression-and-localization-of-mef2c-support-its-important-role-in-photoreceptor-gene-expression
#18
Anne Wolf, Alexander Aslanidis, Thomas Langmann
Photoreceptor-specific gene expression is controlled by a hierarchical network of transcription factors, including the master regulators cone-rod homeobox (Crx) and neural retina leucine zipper (Nrl). Myocyte-enhancer factor 2c (Mef2c) is an ubiquitously expressed transcription factor with important functions in the cardiovascular system. Here, we performed a detailed analysis of Mef2c expression, localization and function in the retina to further elucidate its potential role for photoreceptor gene regulation...
December 23, 2016: Biochemical and Biophysical Research Communications
https://www.readbyqxmd.com/read/28017372/a-syndromic-neurodevelopmental-disorder-caused-by-de-novo-variants-in-ebf3
#19
Hsiao-Tuan Chao, Mariska Davids, Elizabeth Burke, John G Pappas, Jill A Rosenfeld, Alexandra J McCarty, Taylor Davis, Lynne Wolfe, Camilo Toro, Cynthia Tifft, Fan Xia, Nicholas Stong, Travis K Johnson, Coral G Warr, Shinya Yamamoto, David R Adams, Thomas C Markello, William A Gahl, Hugo J Bellen, Michael F Wangler, May Christine V Malicdan
Early B cell factor 3 (EBF3) is a member of the highly evolutionarily conserved Collier/Olf/EBF (COE) family of transcription factors. Prior studies on invertebrate and vertebrate animals have shown that EBF3 homologs are essential for survival and that loss-of-function mutations are associated with a range of nervous system developmental defects, including perturbation of neuronal development and migration. Interestingly, aristaless-related homeobox (ARX), a homeobox-containing transcription factor critical for the regulation of nervous system development, transcriptionally represses EBF3 expression...
January 5, 2017: American Journal of Human Genetics
https://www.readbyqxmd.com/read/28013212/organ-specific-epigenetic-changes-induced-by-the-non-genotoxic-liver-carcinogen-methapyrilene-in-fischer-344-rats
#20
Svitlana Shpyleva, Kostiantyn Dreval, Aline de Conti, Iryna Kindrat, Stepan Melnyk, Jian Yan, Tao Chen, Frederick A Beland, Igor P Pogribny
Continuous lifetime exposure to certain natural and man-made chemicals is a major cause of cancers in humans; therefore, evaluating the carcinogenic risks of chemicals remains important. Currently, substantial progress has been made in identification of genotoxic carcinogens; in contrast, predicting a carcinogenic potential of non-genotoxic compounds is a challenge due to many different modes of action that may lead to tumorigenesis. In the present study, we investigated the effects of the non-genotoxic liver carcinogen methapyrilene and the nongenotoxic non-carcinogen usnic acid at doses that do not exhibit organ cytotoxicity on epigenomic alterations in the liver and kidneys of Fischer 344 (F344) rats...
December 24, 2016: Toxicological Sciences: An Official Journal of the Society of Toxicology
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