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  • 1
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    Role of miR-148a in TRAIL response in NSCLC [Cell Biology] (2015)
    National Academy of Sciences
    Details
    Publication Date: 2015-07-15
    Description: Nonsmall cell lung cancer (NSCLC) is one of the leading causes of death worldwide. TNF-related apoptosis-inducing ligand (TRAIL) has been shown to induce apoptosis in malignant cells without inducing significant toxicity in normal cells. However, several carcinomas, including lung cancer, remain resistant to TRAIL. MicroRNAs (miRNAs) are small noncoding RNAs...
    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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    MiRNAs and acquired TRAIL resistance [Cell Biology] (2015)
    National Academy of Sciences
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    Publication Date: 2015-07-01
    Description: TRAIL (TNF-related apoptosis-inducing ligand) is a promising anticancer agent that can be potentially used as an alternative or complementary therapy because of its specific antitumor activity. However, TRAIL can also stimulate the proliferation of cancer cells through the activation of NF-κB, but the exact mechanism is still poorly understood. In...
    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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    TCL1 transgenic mouse model as a tool for the study of therapeutic targets and microenvironment in human B-cell chronic lymphocytic leukemia (2016)
    Springer Nature
    Details
    Publication Date: 2016-01-29
    Description: TCL1 transgenic mouse model as a tool for the study of therapeutic targets and microenvironment in human B-cell chronic lymphocytic leukemia Cell Death and Disease 7, e2071 (January 2016). doi:10.1038/cddis.2015.419 Authors: A Bresin, L D'Abundo, M G Narducci, M T Fiorenza, C M Croce, M Negrini & G Russo
    Electronic ISSN: 2041-4889
    Topics: Biology , Medicine
    Published by Springer Nature
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  • 4
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    MicroRNA-1 is a candidate tumor suppressor and prognostic marker in human prostate cancer (2012)
    Oxford University Press
    Details
    Publication Date: 2012-04-24
    Description: We previously reported that miR-1 is among the most consistently down-regulated miRs in primary human prostate tumors. In this follow-up study, we further corroborated this finding in an independent data set and made the novel observation that miR-1 expression is further reduced in distant metastasis and is a candidate predictor of disease recurrence. Moreover, we performed in vitro experiments to explore the tumor suppressor function of miR-1. Cell-based assays showed that miR-1 is epigenetically silenced in human prostate cancer. Overexpression of miR-1 in these cells led to growth inhibition and down-regulation of genes in pathways regulating cell cycle progression, mitosis, DNA replication/repair and actin dynamics. This observation was further corroborated with protein expression analysis and 3'-UTR-based reporter assays, indicating that genes in these pathways are either direct or indirect targets of miR-1. A gene set enrichment analysis revealed that the miR-1-mediated tumor suppressor effects are globally similar to those of histone deacetylase inhibitors. Lastly, we obtained preliminary evidence that miR-1 alters the cellular organization of F-actin and inhibits tumor cell invasion and filipodia formation. In conclusion, our findings indicate that miR-1 acts as a tumor suppressor in prostate cancer by influencing multiple cancer-related processes and by inhibiting cell proliferation and motility.
    Print ISSN: 0305-1048
    Electronic ISSN: 1362-4962
    Topics: Biology
    Published by Oxford University Press
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  • 5
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    Mutated {beta}-catenin evades a microRNA-dependent regulatory loop [Cell Biology] (2011)
    National Academy of Sciences
    Details
    Publication Date: 2011-03-23
    Description: hsa-mir-483 is located within intron 2 of the IGF2 gene. We have previously shown oncogenic features of miR-483-3p through cooperation with IGF2 or by independently targeting the proapoptotic gene BBC3/PUMA. Here we demonstrate that expression of miR-483 can be induced independently of IGF2 by the oncoprotein β-catenin through an interaction with the basic helix–loop–helix protein upstream stimulatory transcription factor 1. We also show that β-catenin itself is a target of miR-483-3p, triggering a negative regulatory loop that becomes ineffective in cells harboring an activating mutation of β-catenin. These results provide insights into the complex regulation of the IGF2/miR-483 locus, revealing players in the β-catenin pathway.
    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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  • 6
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    Tcl1 protein functions as an inhibitor of de novo DNA methylation in B-cell chronic lymphocytic leukemia (CLL) [Medical Sciences] (2012)
    National Academy of Sciences
    Details
    Publication Date: 2012-02-15
    Description: B-cell chronic lymphocytic leukemia (CLL) is the most common human leukemia. Deregulation of the T-cell leukemia/lymphoma 1 oncogene (TCL1) in mouse B cells causes a CD5+ leukemia similar to aggressive human CLL. To examine the mechanisms by which Tcl1 protein exerts its oncogenic activity in B cells, we performed proteomics experiments to identify its interacting partners. We found that Tcl1 physically interacts with de novo DNA methylthansferases Dnmt3A and Dnmt3B. We further investigated the effects of Tcl1 up-regulation on the enzymatic activity of Dnmt3A and found that Tcl1 overexpression drastically inhibits Dnmt3A function. In addition, B cells from TCL1 transgenic mice showed a significant decrease in DNA methylation compared with WT controls. Similarly, CLL samples with high Tcl1 expression showed a decrease in DNA methylation compared with CLL samples with low Tcl1 expression. Given the previous reports of inactivating mutations of DNMT3A in acute myelogenous leukemia and myelodysplastic syndrome, our results suggest that inhibition of de novo DNA methylation may be a common oncogenic mechanism in leukemogenesis.
    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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  • 7
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    Trithorax and dCBP acting in a complex to maintain expression of a homeotic gene (2001)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2001-11-10
    Description: Trithorax (Trx) is a member of the trithorax group (trxG) of epigenetic regulators, which is required to maintain active states of Hox gene expression during development. We have purified from Drosophila embryos a trithorax acetylation complex (TAC1) that contains Trx, dCBP, and Sbf1. Like CBP, TAC1 acetylates core histones in nucleosomes, suggesting that this activity may be important for epigenetic maintenance of gene activity. dCBP and Sbf1 associate with specific sites on salivary gland polytene chromosomes, colocalizing with many Trx binding sites. One of these is the site of the Hox gene Ultrabithorax (Ubx). Mutations in either trx or the gene encoding dCBP reduce expression of the endogenous Ubx gene as well as of transgenes driven by the bxd regulatory region of Ubx. Thus Trx, dCBP, and Sbf1 are closely linked, physically and functionally, in the maintenance of Hox gene expression.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Petruk, S -- Sedkov, Y -- Smith, S -- Tillib, S -- Kraevski, V -- Nakamura, T -- Canaani, E -- Croce, C M -- Mazo, A -- 5PO1 CA50507/CA/NCI NIH HHS/ -- New York, N.Y. -- Science. 2001 Nov 9;294(5545):1331-4.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Kimmel Cancer Center, Thomas Jefferson University, Philadelphia, PA 19107, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/11701926" target="_blank"〉PubMed〈/a〉
    Keywords: Acetylation ; Acetyltransferases/genetics/*metabolism ; Animals ; Animals, Genetically Modified ; Binding Sites ; CREB-Binding Protein ; Carrier Proteins/metabolism ; Chromatography, Affinity ; Chromosomes/metabolism ; DNA-Binding Proteins/*genetics/isolation & purification/*metabolism ; Drosophila/embryology/*genetics ; *Drosophila Proteins ; Embryo, Nonmammalian/metabolism ; Gene Expression Regulation, Developmental ; *Genes, Homeobox ; Genes, Insect ; Histone Acetyltransferases ; Histones/metabolism ; Homeodomain Proteins/*genetics ; *Intracellular Signaling Peptides and Proteins ; Mutation ; Nuclear Proteins/genetics/*metabolism ; Nucleosomes/metabolism ; Response Elements ; *Saccharomyces cerevisiae Proteins ; Trans-Activators/genetics/*metabolism ; *Transcription Factors ; Transgenes
    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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    elk, tissue-specific ets-related genes on chromosomes X and 14 near translocation breakpoints (1989)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1989-04-07
    Description: The myb-ets-containing acute leukemia virus, E26, transforms myeloblasts and erythroblasts in culture and causes a mixed erythroid and myeloid leukemia in chicks. Genes (ets-1, ets-2, and erg) with variable relatedness to the v-ets oncogene of the E26 virus have been identified, cloned, and characterized in several species. Two new members (elk-1 and elk-2) of the ets oncogene superfamily have now been identified. Nucleotide sequence analysis of the elk-1 cDNA clone revealed that this gene encodes a 428-residue protein whose predicted amino acid sequence showed 82% similarity to the 3' region of v-ets. The elk or related sequences appear to be transcriptionally active in testis and lung. The elk cDNA probe detects two loci in the human genome, elk-1 and elk-2, which map to chromosome regions Xp11.2 and 14q32.3, respectively. These loci are near the translocation breakpoint seen in the t(X;18) (p11.2;q11.2), which is characteristic of synovial sarcoma, and the chromosome 14q32 breakpoints seen in ataxia telangiectasia and other T cell malignancies. This suggests the possibility that rearrangements of elk loci may be involved in pathogenesis of certain tumors.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Rao, V N -- Huebner, K -- Isobe, M -- ar-Rushdi, A -- Croce, C M -- Reddy, E S -- CA-21124/CA/NCI NIH HHS/ -- CA-25875/CA/NCI NIH HHS/ -- CA-39860/CA/NCI NIH HHS/ -- New York, N.Y. -- Science. 1989 Apr 7;244(4900):66-70.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Wistar Institute of Anatomy and Biology, Philadelphia, PA 19104.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/2539641" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Animals ; Avian Leukosis Virus/*genetics ; Base Sequence ; Chick Embryo ; Chickens ; Chromosome Mapping ; Cloning, Molecular ; DNA Probes ; *DNA-Binding Proteins ; Humans ; Mice ; Molecular Sequence Data ; *Oncogenes ; *Proto-Oncogene Proteins ; Rats ; Retroviridae Proteins/*genetics/isolation & purification ; *Transcription Factors ; *Translocation, Genetic ; *X Chromosome ; ets-Domain Protein Elk-1
    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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    Synthesis of kappa light chains by cell lines containing an 8;22 chromosomal translocation derived from a male homosexual with Burkitt's lymphoma (1983)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1983-12-09
    Description: Three cell lines were derived from a homosexual patient with probable acquired immunodeficiency syndrome and Burkitt's lymphoma. The cell lines produce an unusual strain of Epstein-Barr virus which will both transform cord blood lymphocytes and induce early antigens in Raji cells. Translocations between chromosomes 8 and 22 have occurred in all three lines, but the cells synthesize immunoglobulin M with light chains of the kappa type, in contrast to the usual concordance between a translocation involving chromosome 22 and lambda chain synthesis. Both kappa genes and one lambda gene are rearranged. These findings indicate either that translocation may occur as a separate event from immunoglobulin gene rearrangement or that the proposed hierarchical sequence of immunoglobulin gene rearrangements is not always adhered to. The data also imply that in cells containing a translocation between the long arm of chromosome 8 and a chromosome bearing an immunoglobulin gene, alteration of cellular myc expression may occur regardless of the immunoglobulin gene that is expressed.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Magrath, I -- Erikson, J -- Whang-Peng, J -- Sieverts, H -- Armstrong, G -- Benjamin, D -- Triche, T -- Alabaster, O -- Croce, C M -- New York, N.Y. -- Science. 1983 Dec 9;222(4628):1094-8.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6316501" target="_blank"〉PubMed〈/a〉
    Keywords: Acquired Immunodeficiency Syndrome/complications ; Antigens, Viral/analysis ; Burkitt Lymphoma/complications/*genetics ; Cell Line ; Chromosomes, Human, 21-22 and Y ; Chromosomes, Human, 6-12 and X ; Epstein-Barr Virus Nuclear Antigens ; Herpesvirus 4, Human/analysis ; Homosexuality ; Humans ; Immunoglobulin Light Chains/*biosynthesis ; Immunoglobulin kappa-Chains/*biosynthesis ; Male ; Oncogenes
    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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    Repression of rearranged mu gene and translocated c-myc in mouse 3T3 cells X Burkitt lymphoma cell hybrids (1984)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1984-04-27
    Description: The productively rearranged immunoglobulin mu chain gene and the translocated cellular oncogene c-myc are transcribed at high levels both in human Burkitt lymphoma cells carrying the t(8;14) chromosome translocation and in mouse plasmacytoma X Burkitt lymphoma cell hybrids. In the experiments reported here these genes were found to be repressed in mouse 3T3 fibroblast X Burkitt lymphoma cell hybrids. Such repression probably occurs at the transcriptional level since no human mu- and c-myc messenger RNA's are detectable in hybrid clones carrying the corresponding genes. It is therefore concluded that the ability to express these genes requires a differential B cell environment. The results suggest that the 3T3 cell assay may not be suitable to detect oncogenes directly involved in human B cell oncogenesis, since 3T3 cells apparently are incapable of transcribing an oncogene that is highly active in malignant B cells with specific chromosomal translocations.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Nishikura, K -- ar-Rushdi, A -- Erikson, J -- DeJesus, E -- Dugan, D -- Croce, C M -- CA 09171/CA/NCI NIH HHS/ -- CA 10815/CA/NCI NIH HHS/ -- GM 31060/GM/NIGMS NIH HHS/ -- etc. -- New York, N.Y. -- Science. 1984 Apr 27;224(4647):399-402.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6424234" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Burkitt Lymphoma/*genetics ; Fibroblasts ; *Gene Expression Regulation ; Genes ; Humans ; Hybrid Cells/*metabolism ; Immunoglobulin Heavy Chains/*genetics ; Immunoglobulin mu-Chains/*genetics ; Mice ; *Oncogenes ; RNA, Messenger/genetics ; Transcription, Genetic ; *Translocation, Genetic
    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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