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  • 1
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    GC-induced tethered repression need GR SUMOylation [Pharmacology] (2016)
    National Academy of Sciences
    Details
    Publication Date: 2016-02-03
    Description: Upon binding of a glucocorticoid (GC), the GC receptor (GR) can exert one of three transcriptional regulatory functions. We recently reported that SUMOylation of the GR at position K293 in humans (K310 in mice) within the N-terminal domain is indispensable for GC-induced evolutionary conserved inverted repeated negative GC response element...
    Print ISSN: 0027-8424
    Electronic ISSN: 1091-6490
    Topics: Biology , Medicine , Natural Sciences in General
    Published by National Academy of Sciences
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  • 2
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    Activation function 2 (AF2) of estrogen receptor-{alpha} is required for the atheroprotective action of estradiol but not to accelerate endothelial healing [Physiology] (2011)
    National Academy of Sciences
    Details
    Publication Date: 2011-08-10
    Description: 17β-Estradiol (E2) regulates estrogen receptor-α (ERα) target gene transcription through the two independent activation functions (AFs), AF1 and AF2, located in the N-terminal and ligand binding domain of ERα, respectively. We previously reported that ERα is required for the E2 atheroprotective action as well as for its accelerative action on endothelial healing, but its AF1 function is dispensable. Here, we investigated the role of ERαAF2 in these two major beneficial actions of E2 by electively targeting ERαAF2 (named ERαAF20). Our results prove four points. (i) Compared with WT ERα, the ability of ERαAF20 to stimulate the C3 complement or the estrogen response element-thymidine kinase promoter in two cell lines was dramatically decreased, confirming the importance of AF2 in the E2-induced transcriptional activity of ERα. (ii) The uterotrophic action of E2 was totally absent in ERαAF20 mice, showing the crucial role of ERαAF2 in E2-induced uterus hyperplasia. (iii) ERαAF2 was dispensable for the accelerative action of E2 on endothelial healing, underlining the functionality of ERαAF20 in vivo. (iv) Finally, the atheroprotective effect of E2 was abrogated in ERαAF20 LDL-r−/− mice. Thus, whereas ERαAF1 and ERαAF2 are both required for the uterotrophic action of E2, we show that only ERαAF2 is necessary for its atheroprotective effect.
    Print ISSN: 0027-8424
    Electronic ISSN: 1091-6490
    Topics: Biology , Medicine , Natural Sciences in General
    Published by National Academy of Sciences
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  • 3
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    How Does Cross-Linking Affect the Stability of Block Copolymer Vesicles in the Presence of Surfactant? (2011)
    American Chemical Society (ACS)
    In: Langmuir
    Details
    Publication Date: 2011-12-29
    Description: Langmuir DOI: 10.1021/la204539c
    Print ISSN: 0743-7463
    Electronic ISSN: 1520-5827
    Topics: Chemistry and Pharmacology
    Published by American Chemical Society (ACS)
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  • 4
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    Impaired locomotion and dopamine signaling in retinoid receptor mutant mice (1998)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1998-02-28
    Description: In the adult mouse, single and compound null mutations in the genes for retinoic acid receptor beta and retinoid X receptors beta and gamma resulted in locomotor defects related to dysfunction of the mesolimbic dopamine signaling pathway. Expression of the D1 and D2 receptors for dopamine was reduced in the ventral striatum of mutant mice, and the response of double null mutant mice to cocaine, which affects dopamine signaling in the mesolimbic system, was blunted. Thus, retinoid receptors are involved in the regulation of brain functions, and retinoic acid signaling defects may contribute to pathologies such as Parkinson's disease and schizophrenia.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Krezel, W -- Ghyselinck, N -- Samad, T A -- Dupe, V -- Kastner, P -- Borrelli, E -- Chambon, P -- New York, N.Y. -- Science. 1998 Feb 6;279(5352):863-7.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Institut de Genetique et de Biologie Moleculaire et Cellulaire, CNRS, INSERM, Universite Louis Pasteur, College de France, Boite Postale 163, 67404 Illkirch Cedex, France.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/9452386" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Cocaine/pharmacology ; Corpus Striatum/*metabolism ; Dimerization ; Dopamine/*metabolism ; Locomotion ; Male ; Mice ; Mice, Inbred C57BL ; Mice, Knockout ; *Motor Activity/drug effects ; Muscle, Skeletal/physiology ; Parkinson Disease/etiology ; Peripheral Nervous System/physiology ; Receptors, Dopamine D1/genetics/metabolism ; Receptors, Dopamine D2/genetics/metabolism ; Receptors, Retinoic Acid/genetics/*physiology ; Retinoid X Receptors ; Schizophrenia/etiology ; *Signal Transduction ; Transcription Factors/genetics/*physiology
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
    Published by American Association for the Advancement of Science (AAAS)
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  • 5
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    Breast cancer-associated pS2 protein: synthesis and secretion by normal stomach mucosa (1988)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1988-08-05
    Description: The human pS2 gene is specifically expressed under estrogen transcriptional control in a subclass of estrogen receptor-containing human breast cancer cells. The pS2 gene encodes an 84-amino acid protein that is secreted after signal peptide cleavage. The distribution of pS2 protein in normal human tissues was studied with antibodies to pS2; pS2 was specifically expressed and secreted by mucosa cells of the normal stomach antrum and body of both female and male individuals. Moreover, no estrogen receptor could be detected in these cells, indicating that pS2 gene expression is estrogen-independent in the stomach. The function of the pS2 protein in the gastrointestinal tract is unknown. However, the pS2 protein is similar in sequence to a porcine pancreatic protein that has been shown to inhibit gastrointestinal motility and gastric secretion.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Rio, M C -- Bellocq, J P -- Daniel, J Y -- Tomasetto, C -- Lathe, R -- Chenard, M P -- Batzenschlager, A -- Chambon, P -- New York, N.Y. -- Science. 1988 Aug 5;241(4866):705-8.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉CNRS et U. 184 de l'INSERM, Institut de Chimie Biologique, Faculte de Medecine, Strasbourg, France.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/3041593" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Antibodies, Monoclonal ; Breast Neoplasms/*metabolism ; Estrogens/pharmacology ; Exons ; Female ; Gastric Mucosa/*metabolism ; *Gene Expression Regulation ; Histocytochemistry ; Humans ; Immunoenzyme Techniques ; Male ; Molecular Sequence Data ; Neoplasm Proteins/*biosynthesis/genetics/secretion ; *Proteins ; RNA, Messenger/metabolism ; Receptors, Estrogen/metabolism ; Sequence Homology, Nucleic Acid ; Tissue Distribution ; Tumor Cells, Cultured ; Tumor Suppressor Proteins
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
    Published by American Association for the Advancement of Science (AAAS)
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  • 6
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    Cutaneous cancer stem cell maintenance is dependent on beta-catenin signalling (2008)
    Nature Publishing Group (NPG)
    Details
    Publication Date: 2008-04-04
    Description: Continuous turnover of epithelia is ensured by the extensive self-renewal capacity of tissue-specific stem cells. Similarly, epithelial tumour maintenance relies on cancer stem cells (CSCs), which co-opt stem cell properties. For most tumours, the cellular origin of these CSCs and regulatory pathways essential for sustaining stemness have not been identified. In murine skin, follicular morphogenesis is driven by bulge stem cells that specifically express CD34. Here we identify a population of cells in early epidermal tumours characterized by phenotypic and functional similarities to normal bulge skin stem cells. This population contains CSCs, which are the only cells with tumour initiation properties. Transplants derived from these CSCs preserve the hierarchical organization of the primary tumour. We describe beta-catenin signalling as being essential in sustaining the CSC phenotype. Ablation of the beta-catenin gene results in the loss of CSCs and complete tumour regression. In addition, we provide evidence for the involvement of increased beta-catenin signalling in malignant human squamous cell carcinomas. Because Wnt/beta-catenin signalling is not essential for normal epidermal homeostasis, such a mechanistic difference may thus be targeted to eliminate CSCs and consequently eradicate squamous cell carcinomas.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Malanchi, Ilaria -- Peinado, Hector -- Kassen, Deepika -- Hussenet, Thomas -- Metzger, Daniel -- Chambon, Pierre -- Huber, Marcel -- Hohl, Daniel -- Cano, Amparo -- Birchmeier, Walter -- Huelsken, Joerg -- England -- Nature. 2008 Apr 3;452(7187):650-3. doi: 10.1038/nature06835.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Ecole Polytechnique Federale de Lausanne/ISREC (Swiss Institute for Experimental Cancer Research) and National Center of Competence in Research Molecular Oncology, Chemin des Boveresses 155, 1066 Epalinges, Switzerland.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/18385740" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Antigens, CD34/metabolism ; Cell Line, Tumor ; *Cell Transformation, Neoplastic ; Cells, Cultured ; Epidermis/pathology ; Humans ; Mice ; Mice, Nude ; Neoplasm Transplantation ; Neoplastic Stem Cells/*metabolism/*pathology ; *Signal Transduction ; Skin Neoplasms/*pathology ; beta Catenin/*metabolism
    Print ISSN: 0028-0836
    Electronic ISSN: 1476-4687
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Published by Nature Publishing Group (NPG)
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  • 7
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    A single amino acid that determines the sensitivity of progesterone receptors to RU486 (1992)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1992-01-10
    Description: The progesterone analog RU486, an abortifacient, inhibits the action of progestins in humans but not in chickens or hamsters. Substitution of cysteine at position 575 by glycine in the hormone binding domain (HBD) of the chicken progesterone receptor (cPR) generated a cPR that binds RU486 and whose activity is antagonized by that compound. In fact, all receptors that bind RU486 have a glycine at the corresponding position. The hamster PR, like cPR, has a cysteine. Only glycine--not methionine or leucine--at position 575 allowed binding of RU486 to cPR. Substitution of this glycine by cysteine in the human PR (hPR) abrogated binding of RU486 but not that of an agonist. The corresponding mutation in the human glucocorticoid receptor resulted in a loss of binding of both dexamethasone and RU486. Examination of a series of 11 beta-substituted steroids showed that antagonism is not an intrinsic property of an antihormone, because one hPR antagonist acted as an agonist for a mutated hPR. The positioning of an aromatic 11 beta-substitution in the PR HBD appears to be critical for generating agonistic or antagonistic activity.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Benhamou, B -- Garcia, T -- Lerouge, T -- Vergezac, A -- Gofflo, D -- Bigogne, C -- Chambon, P -- Gronemeyer, H -- New York, N.Y. -- Science. 1992 Jan 10;255(5041):206-9.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department Endocrinologie, Centre de Recherche Roussel-Uclaf, Romainville, France.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/1372753" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Animals ; Base Sequence ; Cricetinae ; Female ; Humans ; Mifepristone/*pharmacology ; Molecular Sequence Data ; Mutagenesis, Site-Directed ; Oligodeoxyribonucleotides ; Polymerase Chain Reaction ; Progesterone/analogs & derivatives/metabolism ; RNA/genetics/isolation & purification ; Receptors, Mineralocorticoid ; Receptors, Progesterone/*drug effects/genetics/metabolism ; Receptors, Steroid/drug effects/genetics/metabolism ; Recombinant Proteins/drug effects/metabolism ; Restriction Mapping ; Uterus/metabolism
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
    Published by American Association for the Advancement of Science (AAAS)
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  • 8
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    Cloning of the 62-kilodalton component of basic transcription factor BTF2 (1992)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1992-09-04
    Description: Cloning of the mammalian basic transcription factors serves as a major step in understanding the mechanism of transcription initiation. The 62-kilodalton component (p62) of one of these transcription factors, BTF2 was cloned and overexpressed. A monoclonal antibody to this polypeptide inhibited transcription in vitro. Immunoaffinity experiments demonstrated that the 62-kilodalton component is closely associated with the other polypeptides present in the BTF2 factor. Sequence similarity suggests that BTF2 may be the human counterpart of RNA polymerase II initiation factor b from yeast.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Fischer, L -- Gerard, M -- Chalut, C -- Lutz, Y -- Humbert, S -- Kanno, M -- Chambon, P -- Egly, J M -- New York, N.Y. -- Science. 1992 Sep 4;257(5075):1392-5.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Laboratoire de Genetique Moleculaire des Eucaryotes, Centre National de la Recherche Scientifique, Unite 184, Faculte de Medecine, Strasbourg, France.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/1529339" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; *Cloning, Molecular ; Escherichia coli/genetics ; Gene Expression ; HeLa Cells ; Humans ; Immunoblotting ; Molecular Sequence Data ; Molecular Weight ; Oligonucleotide Probes ; Recombinant Proteins/chemistry ; Sequence Homology, Nucleic Acid ; Transcription Factor TFIIH ; Transcription Factors/chemistry/*genetics ; *Transcription Factors, TFII ; Transcription, Genetic
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 9
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    Retinoic acid controls the bilateral symmetry of somite formation in the mouse embryo (2005)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2005-02-26
    Description: A striking characteristic of vertebrate embryos is their bilaterally symmetric body plan, which is particularly obvious at the level of the somites and their derivatives such as the vertebral column. Segmentation of the presomitic mesoderm must therefore be tightly coordinated along the left and right embryonic sides. We show that mutant mice defective for retinoic acid synthesis exhibit delayed somite formation on the right side. Asymmetric somite formation correlates with a left-right desynchronization of the segmentation clock oscillations. These data implicate retinoic acid as an endogenous signal that maintains the bilateral synchrony of mesoderm segmentation, and therefore controls bilateral symmetry, in vertebrate embryos.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Vermot, Julien -- Gallego Llamas, Jabier -- Fraulob, Valerie -- Niederreither, Karen -- Chambon, Pierre -- Dolle, Pascal -- New York, N.Y. -- Science. 2005 Apr 22;308(5721):563-6. Epub 2005 Feb 24.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Institut de Genetique et de Biologie Moleculaire et Cellulaire, CNRS/INSERM/ULP/College de France, BP 10142, 67404 Illkirch Cedex, Strasbourg, France. julien@igbmc.u-strasbg.fr〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/15731404" target="_blank"〉PubMed〈/a〉
    Keywords: Aldehyde Oxidoreductases/genetics/metabolism ; Animals ; *Body Patterning ; Embryo, Mammalian/*metabolism ; *Embryonic Development ; Fibroblast Growth Factor 8 ; Fibroblast Growth Factors/genetics/metabolism ; Gene Expression Profiling ; In Situ Hybridization ; Mesoderm/*physiology ; Mice ; Mice, Transgenic ; Morphogenesis ; Signal Transduction ; Somites/*physiology ; Tretinoin/*metabolism
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
    Published by American Association for the Advancement of Science (AAAS)
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  • 10
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    Retinoic acid signaling affects cortical synchrony during sleep (2005)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2005-10-08
    Description: Delta oscillations, characteristic of the electroencephalogram (EEG) of slow wave sleep, estimate sleep depth and need and are thought to be closely linked to the recovery function of sleep. The cellular mechanisms underlying the generation of delta waves at the cortical and thalamic levels are well documented, but the molecular regulatory mechanisms remain elusive. Here we demonstrate in the mouse that the gene encoding the retinoic acid receptor beta determines the contribution of delta oscillations to the sleep EEG. Thus, retinoic acid signaling, which is involved in the patterning of the brain and dopaminergic pathways, regulates cortical synchrony in the adult.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Maret, Stephanie -- Franken, Paul -- Dauvilliers, Yves -- Ghyselinck, Norbert B -- Chambon, Pierre -- Tafti, Mehdi -- New York, N.Y. -- Science. 2005 Oct 7;310(5745):111-3.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Center for Integrative Genomics, University of Lausanne, Genopode, 1015 Lausanne-Dorigny, Switzerland.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/16210540" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Cerebral Cortex/*physiology ; *Delta Rhythm ; Gene Deletion ; Gene Expression ; Mice ; Mice, Inbred Strains ; Polymorphism, Genetic ; Promoter Regions, Genetic ; Receptors, Retinoic Acid/biosynthesis/*genetics ; Reverse Transcriptase Polymerase Chain Reaction ; *Signal Transduction ; Sleep/*physiology ; Transcription, Genetic ; Tretinoin/*metabolism
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
    Published by American Association for the Advancement of Science (AAAS)
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