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  • American Association for the Advancement of Science (AAAS)  (7)
  • 1
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    Unlimited mileage from telomerase? (1999)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1999-03-13
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉de Lange, T -- DePinho, R A -- CA76027/CA/NCI NIH HHS/ -- HD 348880/HD/NICHD NIH HHS/ -- New York, N.Y. -- Science. 1999 Feb 12;283(5404):947-9.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Laboratory for Cell Biology and Genetics, Rockefeller University, New York, NY 10021, USA. delange@rockvax.rockefeller.edu〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/10075559" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; *Cell Aging ; *Cell Division ; *Cell Transformation, Neoplastic ; Cyclin-Dependent Kinase Inhibitor p16/metabolism ; Humans ; Neoplasms/enzymology/metabolism/pathology ; Proto-Oncogene Proteins c-myc/metabolism ; Retinoblastoma Protein/metabolism ; Signal Transduction ; Telomerase/genetics/*metabolism ; Telomere/*metabolism ; ras Proteins/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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  • 2
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    Inhibition of experimental liver cirrhosis in mice by telomerase gene delivery (2000)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2000-02-26
    Description: Accelerated telomere loss has been proposed to be a factor leading to end-stage organ failure in chronic diseases of high cellular turnover such as liver cirrhosis. To test this hypothesis directly, telomerase-deficient mice, null for the essential telomerase RNA (mTR) gene, were subjected to genetic, surgical, and chemical ablation of the liver. Telomere dysfunction was associated with defects in liver regeneration and accelerated the development of liver cirrhosis in response to chronic liver injury. Adenoviral delivery of mTR into the livers of mTR(-/-) mice with short dysfunctional telomeres restored telomerase activity and telomere function, alleviated cirrhotic pathology, and improved liver function. These studies indicate that telomere dysfunction contributes to chronic diseases of continual cellular loss-replacement and encourage the evaluation of "telomerase therapy" for such diseases.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Rudolph, K L -- Chang, S -- Millard, M -- Schreiber-Agus, N -- DePinho, R A -- K08 AG001019/AG/NIA NIH HHS/ -- R01HD28317/HD/NICHD NIH HHS/ -- R01HD34880/HD/NICHD NIH HHS/ -- New York, N.Y. -- Science. 2000 Feb 18;287(5456):1253-8.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Adult Oncology, Medicine and Genetics, Dana-Farber Cancer Institute, 44 Binney Street (M413), and Harvard Medical School, Boston, MA 02115, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/10678830" target="_blank"〉PubMed〈/a〉
    Keywords: Adenoviridae/genetics ; Animals ; Apoptosis ; Carbon Tetrachloride/toxicity ; Gene Transfer Techniques ; *Genetic Therapy ; Genetic Vectors ; Hepatectomy ; Liver/enzymology/*pathology ; Liver Cirrhosis, Experimental/enzymology/pathology/physiopathology/*therapy ; *Liver Regeneration ; Mice ; Mice, Knockout ; Mice, Transgenic ; Mitosis ; Spleen/enzymology ; Telomerase/*genetics/metabolism ; Telomere/physiology/ultrastructure ; Transforming Growth Factor beta/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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  • 3
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    Connecting chromosomes, crisis, and cancer (2002)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2002-07-27
    Description: Cancer is a disease of impaired genome stability. The molecular forces that maintain genome integrity and sense altered chromosome structure are invariably subverted in cancer cells. Here, we explore the contrasting contributions of telomeres in the initiation and suppression of cancer and review the evidence supporting a role for telomere dysfunction as a mechanism driving the radical chromosomal aberrations that typify cancer genomes. Recent work suggests that passage of cells through crisis in the setting of deactivated DNA damage checkpoints provides a mutational mechanism that can generate the diverse genetic alterations required for cancer initiation. A greater understanding of telomere-induced crisis and the cell's crisis management mechanisms should guide the rational development of new therapeutics for cancer and other disorders.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Maser, Richard S -- DePinho, Ronald A -- New York, N.Y. -- Science. 2002 Jul 26;297(5581):565-9.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Adult Oncology, Dana-Farber Cancer Institute, Harvard Medical School, 44 Binney Street, M413, Boston, MA 02115, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/12142527" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Cell Cycle ; Cell Division ; *Cell Transformation, Neoplastic ; Cells, Cultured ; DNA Damage ; DNA Repair ; Disease Progression ; Genetic Therapy ; Humans ; Neoplasms/*genetics/pathology/*physiopathology ; Signal Transduction ; Telomerase/antagonists & inhibitors/*metabolism ; Telomere/*physiology/ultrastructure
    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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  • 4
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    Coactivation of receptor tyrosine kinases affects the response of tumor cells to targeted therapies (2007)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2007-09-18
    Description: Targeted therapies that inhibit receptor tyrosine kinases (RTKs) and the downstream phosphatidylinositol 3-kinase (PI3K) signaling pathway have shown promising anticancer activity, but their efficacy in the brain tumor glioblastoma multiforme (GBM) and other solid tumors has been modest. We hypothesized that multiple RTKs are coactivated in these tumors and that redundant inputs drive and maintain downstream signaling, thereby limiting the efficacy of therapies targeting single RTKs. Tumor cell lines, xenotransplants, and primary tumors indeed show multiple concomitantly activated RTKs. Combinations of RTK inhibitors and/or RNA interference, but not single agents, decreased signaling, cell survival, and anchorage-independent growth even in glioma cells deficient in PTEN, a frequently inactivated inhibitor of PI3K. Thus, effective GBM therapy may require combined regimens targeting multiple RTKs.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Stommel, Jayne M -- Kimmelman, Alec C -- Ying, Haoqiang -- Nabioullin, Roustem -- Ponugoti, Aditya H -- Wiedemeyer, Ruprecht -- Stegh, Alexander H -- Bradner, James E -- Ligon, Keith L -- Brennan, Cameron -- Chin, Lynda -- DePinho, Ronald A -- 5P01CA95616/CA/NCI NIH HHS/ -- R01CA99041/CA/NCI NIH HHS/ -- New York, N.Y. -- Science. 2007 Oct 12;318(5848):287-90. Epub 2007 Sep 13.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Medical Oncology, Dana-Farber Cancer Institute and Harvard Medical School, Boston, MA 02115, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/17872411" target="_blank"〉PubMed〈/a〉
    Keywords: Antineoplastic Agents/*pharmacology ; Antineoplastic Combined Chemotherapy Protocols/pharmacology/therapeutic use ; Brain Neoplasms/drug therapy/*enzymology ; Cell Line, Tumor ; Cell Survival ; Enzyme Activation ; Erlotinib Hydrochloride ; Glioblastoma/drug therapy/*enzymology ; Humans ; Indoles/pharmacology ; PTEN Phosphohydrolase/genetics/metabolism ; Phosphatidylinositol 3-Kinases/metabolism ; Phosphorylation ; Piperazines/pharmacology ; Protein Kinase Inhibitors/*pharmacology ; Proto-Oncogene Proteins/metabolism ; Proto-Oncogene Proteins c-met ; Quinazolines/pharmacology ; Receptor Protein-Tyrosine Kinases/antagonists & inhibitors/*metabolism ; Receptor, Epidermal Growth Factor/antagonists & inhibitors/metabolism ; Receptors, Growth Factor/metabolism ; Signal Transduction ; Sulfonamides/pharmacology
    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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  • 5
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    The kinase LKB1 mediates glucose homeostasis in liver and therapeutic effects of metformin (2005)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2005-11-26
    Description: The Peutz-Jegher syndrome tumor-suppressor gene encodes a protein-threonine kinase, LKB1, which phosphorylates and activates AMPK [adenosine monophosphate (AMP)-activated protein kinase]. The deletion of LKB1 in the liver of adult mice resulted in a nearly complete loss of AMPK activity. Loss of LKB1 function resulted in hyperglycemia with increased gluconeogenic and lipogenic gene expression. In LKB1-deficient livers, TORC2, a transcriptional coactivator of CREB (cAMP response element-binding protein), was dephosphorylated and entered the nucleus, driving the expression of peroxisome proliferator-activated receptor-gamma coactivator 1alpha (PGC-1alpha), which in turn drives gluconeogenesis. Adenoviral small hairpin RNA (shRNA) for TORC2 reduced PGC-1alpha expression and normalized blood glucose levels in mice with deleted liver LKB1, indicating that TORC2 is a critical target of LKB1/AMPK signals in the regulation of gluconeogenesis. Finally, we show that metformin, one of the most widely prescribed type 2 diabetes therapeutics, requires LKB1 in the liver to lower blood glucose levels.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3074427/" target="_blank"〉〈img src="https://static.pubmed.gov/portal/portal3rc.fcgi/4089621/img/3977009" border="0"〉〈/a〉   〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3074427/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Shaw, Reuben J -- Lamia, Katja A -- Vasquez, Debbie -- Koo, Seung-Hoi -- Bardeesy, Nabeel -- Depinho, Ronald A -- Montminy, Marc -- Cantley, Lewis C -- CA84313/CA/NCI NIH HHS/ -- GM056203/GM/NIGMS NIH HHS/ -- GM37828/GM/NIGMS NIH HHS/ -- R01 GM056203/GM/NIGMS NIH HHS/ -- R01 GM056203-09/GM/NIGMS NIH HHS/ -- New York, N.Y. -- Science. 2005 Dec 9;310(5754):1642-6. Epub 2005 Nov 24.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Systems Biology, Harvard Medical School, Boston, MA 02115, USA. shaw@salk.edu〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/16308421" target="_blank"〉PubMed〈/a〉
    Keywords: AMP-Activated Protein Kinases ; Animals ; Blood Glucose/analysis ; Diabetes Mellitus, Type 2/drug therapy/metabolism ; Enzyme Activation ; Female ; Gene Expression Regulation ; Gluconeogenesis/genetics ; Glucose/*metabolism ; HeLa Cells ; Homeostasis ; Humans ; Hyperglycemia/drug therapy/metabolism ; Hypoglycemic Agents/*pharmacology/therapeutic use ; Lipogenesis/genetics ; Liver/enzymology/*metabolism ; Male ; Metformin/*pharmacology/therapeutic use ; Mice ; Mice, Obese ; Multienzyme Complexes/*metabolism ; Phosphorylation ; Protein-Serine-Threonine Kinases/genetics/*metabolism ; Signal Transduction ; Trans-Activators/genetics/metabolism ; Transcription Factors
    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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  • 6
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    Suppression of ovarian follicle activation in mice by the transcription factor Foxo3a (2003)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2003-07-12
    Description: Foxo transcription factors have been implicated in diverse biological processes, including metabolism, cellular stress responses, and aging. Here, we show that Foxo3a-/- female mice exhibit a distinctive ovarian phenotype of global follicular activation leading to oocyte death, early depletion of functional ovarian follicles, and secondary infertility. Foxo3a thus functions at the earliest stages of follicular growth as a suppressor of follicular activation. In addition to providing a molecular entry point for studying the regulation of follicular growth, these results raise the possibility that accelerated follicular initiation plays a role in premature ovarian failure, a common cause of infertility and premature aging in women.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Castrillon, Diego H -- Miao, Lili -- Kollipara, Ramya -- Horner, James W -- DePinho, Ronald A -- K08/PHS HHS/ -- New York, N.Y. -- Science. 2003 Jul 11;301(5630):215-8.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Medical Oncology, Dana-Farber Cancer Institute, and Department of Medicine, Harvard Medical School, Boston, MA 02115, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/12855809" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Apoptosis ; Cell Size ; DNA-Binding Proteins/genetics/*physiology ; Female ; Follicle Stimulating Hormone/blood ; Follicular Atresia ; Forkhead Transcription Factors ; Gene Targeting ; Granulosa Cells/cytology/physiology ; Humans ; Infertility, Female ; Luteinizing Hormone/blood ; Male ; Mice ; Mice, Knockout ; Oocytes/cytology/physiology ; Ovarian Follicle/growth & development/*physiology ; Ovary/metabolism ; Ovulation ; Primary Ovarian Insufficiency/etiology ; Sexual Maturation ; Superovulation ; 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
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  • 7
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    Inhibition of ras-induced proliferation and cellular transformation by p16INK4 (1995)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1995-01-13
    Description: The cyclin-dependent kinase 4 (CDK4) regulates progression through the G1 phase of the cell cycle. The activity of CDK4 is controlled by the opposing effects of the D-type cyclin, an activating subunit, and p16INK4, an inhibitory subunit. Ectopic expression of p16INK4 blocked entry into S phase of the cell cycle induced by oncogenic Ha-Ras, and this block was relieved by coexpression of a catalytically inactive CDK4 mutant. Expression of p16INK4 suppressed cellular transformation of primary rat embryo fibroblasts by oncogenic Ha-Ras and Myc, but not by Ha-Ras and E1a. Together, these observations provide direct evidence that p16INK4 can inhibit cell growth.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Serrano, M -- Gomez-Lahoz, E -- DePinho, R A -- Beach, D -- Bar-Sagi, D -- CA55360/CA/NCI NIH HHS/ -- EY09300-01/EY/NEI NIH HHS/ -- HD28317-02/HD/NICHD NIH HHS/ -- New York, N.Y. -- Science. 1995 Jan 13;267(5195):249-52.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Howard Hughes Medical Institute, Cold Spring Harbor Laboratory, NY 11724.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7809631" target="_blank"〉PubMed〈/a〉
    Keywords: Adenovirus E1A Proteins/genetics/physiology ; Animals ; Carrier Proteins/genetics/*physiology ; *Cell Division ; *Cell Transformation, Neoplastic ; Cells, Cultured ; Cyclin-Dependent Kinase 4 ; Cyclin-Dependent Kinase Inhibitor p16 ; *Cyclin-Dependent Kinases ; Genes, Reporter ; Genes, Retinoblastoma ; Genes, myc ; Genes, ras ; Plasmids ; Protein-Serine-Threonine Kinases/antagonists & inhibitors/metabolism ; *Proto-Oncogene Proteins ; Rats ; Retinoblastoma Protein/physiology ; S Phase ; Transcriptional Activation ; Transfection ; Tumor Cells, Cultured ; ras Proteins/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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