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Homeodomain

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https://www.readbyqxmd.com/read/29243871/expression-of-six3-and-otx-in-solenogastres-mollusca-supports-an-ancestral-role-in-bilaterian-anterior-posterior-axis-patterning
#1
Emanuel Redl, Maik Scherholz, Tim Wollesen, Christiane Todt, Andreas Wanninger
The homeodomain transcription factors six3 and otx are involved in patterning the anterior body and parts of the central nervous system (CNS) in bilaterians. Their similar expression patterns have been used as an argument for homology of heads, brains, segmentation, and ciliated larvae. We investigated the developmental expression of six3 and otx in the aplacophoran mollusk Wirenia argentea. Six3 is expressed in subepithelial cells delimiting the apical organ of the solenogaster pericalymma larva. Otx is expressed in cells of the prototroch and adjacent regions as well as in posterior extensions of the prototrochal expression domain...
December 15, 2017: Evolution & Development
https://www.readbyqxmd.com/read/29237723/the-e3-ligase-drought-hypersensitive-negatively-regulates-cuticular-wax-biosynthesis-by-promoting-the-degradation-of-transcription-factor-roc4-in-rice
#2
Zhenyu Wang, Xiaojie Tian, Qingzhen Zhao, Zhiqi Liu, Xiufeng Li, Yuekun Ren, Jiaqi Tang, Jun Fang, Qijiang Xu, Qingyun Bu
Cuticular wax plays crucial roles in protecting plants from environmental stresses, particularly drought stress. Many enzyme-encoding genes and transcription factors involved in wax biosynthesis have been identified, but the underlying posttranslational regulatory mechanisms are poorly understood. Here, we demonstrate that DROUGHT HYPERSENSITIVE (DHS), encoding a Really Interesting New Gene (RING)-type protein, is a critical regulator of wax biosynthesis in rice (Oryza sativa). The cuticular wax contents were significantly reduced in DHS overexpression plants but increased in dhs mutants compared to the wild type, which resulted in a response opposite that of drought stress...
December 13, 2017: Plant Cell
https://www.readbyqxmd.com/read/29236054/genome-wide-profiling-of-small-rnas-and-degradome-revealed-conserved-regulations-of-mirnas-on-auxin-responsive-genes-during-fruit-enlargement-in-peaches
#3
Mengya Shi, Xiao Hu, Yu Wei, Xu Hou, Xue Yuan, Jun Liu, Yueping Liu
Auxin has long been known as a critical phytohormone that regulates fruit development in plants. However, due to the lack of an enlarged ovary wall in the model plants Arabidopsis and rice, the molecular regulatory mechanisms of fruit division and enlargement remain unclear. In this study, we performed small RNA sequencing and degradome sequencing analyses to systematically explore post-transcriptional regulation in the mesocarp at the hard core stage following treatment of the peach (Prunus persica L.) fruit with the synthetic auxin α-naphthylacetic acid (NAA)...
December 13, 2017: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/29227536/microrna-222-3p-associated-with-helicobacter-pylori-targets-hipk2-to-promote-cell-proliferation-invasion-and-inhibits-apoptosis-in-gastric-cancer
#4
Xiaoyan Tan, Haiying Tang, Jian Bi, Na Li, Yujie Jia
Gastric cancer ranks as the second leading cause of malignancy-related death worldwide, and always diagnosed at advanced stage. MicroRNA-222-3p (miR-222-3p) is aberrantly upregulated in various malignant tumors including gastric cancer, but its role and underlying molecular mechanisms in gastric cancer remain largely unknown. Helicobacter pylori (H. pylori) infection acts as a trigger in the development of gastric cancer, and increasing evidence suggests that H. pylori affects microRNA expression. In this study, gastric cancer tissue samples were divided into H...
December 11, 2017: Journal of Cellular Biochemistry
https://www.readbyqxmd.com/read/29216297/skn-1a-pou2f3-functions-as-a-master-regulator-to-generate-trpm5-expressing-chemosensory-cells-in-mice
#5
Junpei Yamashita, Makoto Ohmoto, Tatsuya Yamaguchi, Ichiro Matsumoto, Junji Hirota
Transient receptor potential channel M5 (Trpm5)-expressing cells, such as sweet, umami, and bitter taste cells in the oropharyngeal epithelium, solitary chemosensory cells in the nasal respiratory epithelium, and tuft cells in the small intestine, that express taste-related genes function as chemosensory cells. Previous studies demonstrated that Skn-1a/Pou2f3, a POU homeodomain transcription factor is expressed in these Trpm5-expressing chemosensory cells, and is necessary for their generation. Trpm5-expressing cells have recently been found in trachea, auditory tube, urethra, thymus, pancreatic duct, stomach, and large intestine...
2017: PloS One
https://www.readbyqxmd.com/read/29210770/in-vitro-generation-of-glucose-responsive-insulin-secreting-cells-from-pancreatic-and-duodenal-homeobox-1-overexpressing-human-induced-pluripotent-stem-cell-derived-from-diabetic-patient
#6
Bahareh Rajaei, Mehdi Shamsara, Mohammad Hossein Sanati
Pancreatic and duodenal homeobox 1 (PDX1), a member of the homeodomain-containing transcription factor family, is a key transcription factor for pancreas development and mature β-cell function. In this study, induced overexpression of PDX1 resulted in producing susceptible cells for pancreatic differentiation and was well beneficial to enhance β-cell production, maturation, function, and survival. Induced PDX1 overexpression in harmony with a set of signaling molecules involves in guiding the signaling pathways toward pancreas development, leaded to high-efficient in vitro generation of ectopic insulin-producing cells (IPCs) with the effectively reduced number of polyhormonal cells and increased number of INS single-positive cells...
November 27, 2017: ASAIO Journal: a Peer-reviewed Journal of the American Society for Artificial Internal Organs
https://www.readbyqxmd.com/read/29208636/homeodomain-interacting-protein-kinase-promotes-tumorigenesis-and-metastatic-cell-behavior
#7
Jessica A Blaquiere, Kenneth Kin Lam Wong, Stephen D Kinsey, Jin Wu, Esther M Verheyen
Aberrations in signaling pathways that regulate tissue growth often lead to tumorigenesis. Homeodomain interacting protein kinase (Hipk) family members are reported to have distinct and contradictory effects on cell proliferation and tissue growth. From these studies it is clear that much remains to be learned about the roles of Hipk family protein kinases in proliferation and cell behaviour. Previous work has shown that Drosophila Hipk is a potent growth regulator, thus we predicted that it could have a role in tumorigenesis...
November 20, 2017: Disease Models & Mechanisms
https://www.readbyqxmd.com/read/29205612/homeodomain-interacting-protein-kinase-phosphorylates-the-drosophila-paired-box-protein-6-pax6-homologues-twin-of-eyeless-and-eyeless
#8
E L Steinmetz, D N Dewald, U Walldorf
Homeodomain-interacting protein kinase (Hipk), the Drosophila homologue of mammalian HIPK2, plays several important roles in regulating differentiation, proliferation, apoptosis, and stress responses and acts as a mediator for signals of diverse pathways, such as Notch or Wingless signalling. The Paired box protein 6 (Pax6) has two Drosophila homologues, Twin of eyeless (Toy) and Eyeless (Ey). Both stand atop the retinal determination gene network (RDGN), which is essential for proper eye development in Drosophila...
December 4, 2017: Insect Molecular Biology
https://www.readbyqxmd.com/read/29201982/dataset-of-the-hox1-gene-sequences-of-the-wheat-polyploids-and-their-diploid-relatives
#9
Andrey B Shcherban, Elena A Salina
The TaHOX-1 gene of common wheat Triticum aestivum L. (BAD-genome) encodes transcription factor (HD-Zip I) which is characterized by the presence of a DNA-binding homeodomain (HD) with an adjacent Leucine zipper (LZ) motif. This gene can play a role in adapting plant to a variety of abiotic stresses, such as drought, cold, salinity etc., which strongly affect wheat production. However, it's both functional role in stress resistance and divergence during wheat evolution has not yet been elucidated. This data in brief article is associated with the research paper "Structural and functional divergence of homoeologous copies of the TaHOX-1 gene in polyploid wheats and their diploid ancestors"...
February 2018: Data in Brief
https://www.readbyqxmd.com/read/29200321/two-new-insertion-deletion-variants-of-the-pitx2-gene-and-their-effects-on-growth-traits-in-sheep
#10
Haidong Zhao, Shuai He, Shuhui Wang, Yanjiao Zhu, Hongwei Xu, Renyun Luo, Xianyong Lan, Yong Cai, Xiuzhu Sun
In China, Tong sheep (TS) and Lanzhou fat-tailed sheep (LFTS) are two closely relative endanger breeds for low meat production and low fecundity, finding some marker-assisted selected (MAS) is our first priority for improving their growth traits. For this purpose, Hu sheep (HS) and small-tailed Han sheep (STHS) were compared with two endangered breeds (TS and LFTS). Paired-liked homeodomain transcription factor 2 (PITX2) gene was the important member of PITX family, which could adjust animal growth through hypothalamic-pituitary-adrenal axis...
December 4, 2017: Animal Biotechnology
https://www.readbyqxmd.com/read/29193733/overexpression-of-the-class-i-homeodomain-transcription-factor-tahdzipi-5-increases-drought-and-frost-tolerance-in-transgenic-wheat
#11
Yunfei Yang, Sukanya Luang, John Harris, Matteo Riboni, Yuan Li, Natalia Bazanova, Maria Hrmova, Stephan Haefele, Nataliya Kovalchuk, Sergiy Lopato
Characterisation of the function of stress-related genes helps to define mechanisms of plant responses to environmental conditions. The findings of this work defined the role of the wheat TaHDZipI-5 gene, encoding a stress-responsive homeodomain-leucine zipper class I (HD-Zip I) transcription factor, during the development of plant tolerance to frost and drought. Strong induction of TaHDZipI-5 expression by low temperatures, and the elevated TaHDZipI-5 levels of expression in flowers and early developing grains in the absence of stress, suggest that TaHDZipI-5 is involved in the regulation of frost tolerance at flowering...
November 28, 2017: Plant Biotechnology Journal
https://www.readbyqxmd.com/read/29187878/uhrf1-is-an-independent-prognostic-factor-and-a-potential-therapeutic-target-of-esophageal-squamous-cell-carcinoma
#12
Jiecheng Ye, Yong Zhang, Weiye Liang, Jianxian Huang, Lihui Wang, Xueyun Zhong
Purpose: Ubiquitin-like with plant homeodomain and ring-finger domains 1 (UHRF1) plays an essential role in DNA methylation, and the overexpression of UHRF1 is associated with poor prognosis in various cancers. Esophageal squamous cell carcinoma (ESCC) accounts for approximately 90% of esophageal cancer cases in China, but the five-year survival rate for patients is less than 10% due to limited clinical approaches for early diagnosis and treatment. The present research aimed to investigate the expression of UHRF1 in ESCC and its biological role in ESCC development...
2017: Journal of Cancer
https://www.readbyqxmd.com/read/29180952/maintenance-of-positional-identity-of-neural-progenitors-in-the-embryonic-and-postnatal-telencephalon
#13
Ryan N Delgado, Daniel A Lim
Throughout embryonic development and into postnatal life, regionally distinct populations of neural progenitor cells (NPCs) collectively generate the many different types of neurons that underlie the complex structure and function of the adult mammalian brain. At very early stages of telencephalic development, NPCs become organized into regional domains that each produce different subsets of neurons. This positional identity of NPCs relates to the regional expression of specific, fate-determining homeodomain transcription factors...
2017: Frontiers in Molecular Neuroscience
https://www.readbyqxmd.com/read/29170974/comparative-proteomic-analysis-of-amnion-membrane-transplantation-and-cross-linking-treatments-in-an-experimental-alkali-injury-model
#14
Sevgi Subasi, Ozgul Altintas, Murat Kasap, Nil Guzel, Gurler Akpinar, Suleyman Karaman
PURPOSE: In this study, by using a two-dimensional (2D) electrophoresis-based experimental approach, we aimed at understanding the nature of alkali injuries and the underlying mechanisms. A secondary aim was to compare the effects of cross-linking (CXL) and amnion membrane transplantation (AMT) on corneal protein compositions at the end of the early repair phase after injured with alkali. METHOD: The right corneas of 24 rabbits were injured with a 1 N solution of NaOH...
November 23, 2017: International Ophthalmology
https://www.readbyqxmd.com/read/29170424/p300-mediated-acetylation-increased-the-protein-stability-of-hipk2-and-enhanced-its-tumor-suppressor-function
#15
Jong-Ryoul Choi, Seo-Young Lee, Ki Soon Shin, Cheol Yong Choi, Shin Jung Kang
Homeodomain-interacting protein kinase 2 (HIPK2) is a nuclear serine/threonine kinase that functions in development and tumor suppression. One of the prominent features of this kinase is that it is tightly regulated by proteasomal degradation. In the present study, we present evidence suggesting that the protein stability of HIPK2 can be regulated by p300-mediated acetylation. p300 increased the protein level of HIPK2 via its acetyltransferase activity. p300 increased the acetylation of HIPK2 while decreased polyubiquitination and its proteasomal degradation...
November 23, 2017: Scientific Reports
https://www.readbyqxmd.com/read/29158439/differential-spatial-distribution-of-mir165-6-determines-variability-in-plant-root-anatomy
#16
G Di Ruocco, G Bertolotti, E Pacifici, L Polverari, M Tsiantis, S Sabatini, P Costantino, R Dello Ioio
A clear example of interspecific variation is the number of root cortical layers in plants. The genetic mechanisms underlying this variability are poorly understood, partly due to the lack of a convenient model. Here, we demonstrate that Cardamine hirsuta, unlike Arabidopsis thaliana, has two cortical layers that are patterned during late embryogenesis. We show that a miR165/6-dependent distribution of the HOMEODOMAIN LEUCINE ZIPPER III (HD-ZIPIII) transcription factor PHABULOSA (PHB) controls this pattern...
November 20, 2017: Development
https://www.readbyqxmd.com/read/29156143/identification-of-nuclear-localization-signals-in-the-human-homeoprotein-msx1
#17
Akio Shibata, Junichiro Machida, Seishi Yamaguchi, Masashi Kimura, Tadashi Tatematsu, Hitoshi Miyachi, Atsuo Nakayama, Kazuo Shimozato, Yoshihito Tokita
MSX1 is one of the homeoproteins with the homeodomain (HD) sequence, which regulates proliferation and differentiation of mesenchymal cells. In this study, we investigated the nuclear localization signal (NLS) in the MSX1 HD by deletion and amino acid substitution analyses. The web-based tool NLStradamus predicted two putative basic motifs in the N- and C-termini of the MSX1 HD. Green fluorescent protein (GFP) chimera studies revealed that NLS1 (<sub>161</sub>RKHKTNRKPR<sub>170</sub>) and NLS2 (<sub>216</sub>NRRAKAKR<sub>223</sub>) were independently insufficient for robust nuclear localization...
November 20, 2017: Biochemistry and Cell Biology, Biochimie et Biologie Cellulaire
https://www.readbyqxmd.com/read/29147724/glabrous-cmgl-encodes-a-hd-zip-iv-transcription-factor-playing-roles-in-multicellular-trichome-initiation-in-melon
#18
Huayu Zhu, Xiaofen Sun, Qi Zhang, Pengyao Song, Qianmei Hu, Xiaojing Zhang, Xiang Li, Jianbin Hu, Junsong Pan, Shouru Sun, Yiqun Weng, Luming Yang
Map-based cloning identified CmGL that encodes a HD-ZIP type IV transcription factor that controls multicellular trichome initiation in melon. Trichomes are small hairs covering the aerial parts of plants that originate from the epidermal cells, which can protect plants against the damage by insects and pathogens. The regulatory pathway of unicellular trichomes has been well studied in the model plant Arabidopsis. Little is known about the genetic control and regulation of trichome development in melon (Cucumis melo L...
November 17, 2017: TAG. Theoretical and Applied Genetics. Theoretische und Angewandte Genetik
https://www.readbyqxmd.com/read/29141678/novel-functions-of-lhx2-and-pax6-in-the-developing-telencephalon-revealed-upon-combined-loss-of-both-genes
#19
Geeta Godbole, Achira Roy, Ashwin S Shetty, Shubha Tole
Patterning of the telencephalic neuroepithelium is a tightly regulated process controlled by transcription factors and signalling molecules. The cortical primordium is flanked by two signalling centres, the hem medially, and the antihem laterally. The hem induces the formation of the hippocampus in adjacent neuroepithelium. Therefore, the position of the hem defines the position of the hippocampus in the brain. The antihem is positioned at the boundary between the dorsal and ventral telencephalon and proposed to provide patterning cues during development...
November 15, 2017: Neural Development
https://www.readbyqxmd.com/read/29138528/the-predictive-value-of-pitx2-dna-methylation-for-high-risk-breast-cancer-therapy-current-guidelines-medical-needs-and-challenges
#20
REVIEW
Michaela Aubele, Manfred Schmitt, Rudolf Napieralski, Stefan Paepke, Johannes Ettl, Magdalena Absmaier, Viktor Magdolen, John Martens, John A Foekens, Olaf G Wilhelm, Marion Kiechle
High-risk breast cancer comprises distinct tumor entities such as triple-negative breast cancer (TNBC) which is characterized by lack of estrogen (ER) and progesterone (PR) and the HER2 receptor and breast malignancies which have spread to more than three lymph nodes. For such patients, current (inter)national guidelines recommend anthracycline-based chemotherapy as the standard of care, but not all patients do equally benefit from such a chemotherapy. To further improve therapy decision-making, predictive biomarkers are of high, so far unmet, medical need...
2017: Disease Markers
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