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  • 1
    Publication Date: 1999-12-11
    Description: Neurofibromatosis type 1 (NF1) is a prevalent familial cancer syndrome resulting from germ line mutations in the NF1 tumor suppressor gene. Hallmark features of the disease are the development of benign peripheral nerve sheath tumors (neurofibromas), which can progress to malignancy. Unlike humans, mice that are heterozygous for a mutation in Nf1 do not develop neurofibromas. However, as described here, chimeric mice composed in part of Nf1-/- cells do, which demonstrates that loss of the wild-type Nf1 allele is rate-limiting in tumor formation. In addition, mice that carry linked germ line mutations in Nf1 and p53 develop malignant peripheral nerve sheath tumors (MPNSTs), which supports a cooperative and causal role for p53 mutations in MPNST development. These two mouse models provide the means to address fundamental aspects of disease development and to test therapeutic strategies.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Cichowski, K -- Shih, T S -- Schmitt, E -- Santiago, S -- Reilly, K -- McLaughlin, M E -- Bronson, R T -- Jacks, T -- New York, N.Y. -- Science. 1999 Dec 10;286(5447):2172-6.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Biology and Center for Cancer Research and Howard Hughes Medical Institute, Massachusetts Institute of Technology, Cambridge, MA 02139, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/10591652" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Cell Line ; Chimera ; *Disease Models, Animal ; Female ; *Genes, Neurofibromatosis 1 ; Genes, p53 ; Germ-Line Mutation ; Humans ; Loss of Heterozygosity ; Male ; Mice ; Mice, Inbred C57BL ; Mice, Transgenic ; Mutation ; Nerve Sheath Neoplasms/*genetics/*pathology ; Nerve Tissue Proteins/analysis/physiology ; Neurofibromatosis 1/*genetics/*pathology ; Neurofibromin 1 ; Proteins/analysis/physiology ; S100 Proteins/analysis ; Schwann Cells/chemistry/ultrastructure ; Stem Cells
    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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  • 2
    Publication Date: 2009-10-23
    Description: NF-kappaB transcription factors function as crucial regulators of inflammatory and immune responses as well as of cell survival. They have also been implicated in cellular transformation and tumorigenesis. However, despite extensive biochemical characterization of NF-kappaB signalling during the past twenty years, the requirement for NF-kappaB in tumour development in vivo, particularly in solid tumours, is not completely understood. Here we show that the NF-kappaB pathway is required for the development of tumours in a mouse model of lung adenocarcinoma. Concomitant loss of p53 (also known as Trp53) and expression of oncogenic Kras(G12D) resulted in NF-kappaB activation in primary mouse embryonic fibroblasts. Conversely, in lung tumour cell lines expressing Kras(G12D) and lacking p53, p53 restoration led to NF-kappaB inhibition. Furthermore, the inhibition of NF-kappaB signalling induced apoptosis in p53-null lung cancer cell lines. Inhibition of the pathway in lung tumours in vivo, from the time of tumour initiation or after tumour progression, resulted in significantly reduced tumour development. Together, these results indicate a critical function for NF-kappaB signalling in lung tumour development and, further, that this requirement depends on p53 status. These findings also provide support for the development of NF-kappaB inhibitory drugs as targeted therapies for the treatment of patients with defined mutations in Kras and p53.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2780341/" 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/PMC2780341/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Meylan, Etienne -- Dooley, Alison L -- Feldser, David M -- Shen, Lynn -- Turk, Erin -- Ouyang, Chensi -- Jacks, Tyler -- P30 CA014051/CA/NCI NIH HHS/ -- P30 CA014051-37/CA/NCI NIH HHS/ -- P30 CA014051-38/CA/NCI NIH HHS/ -- P30-CA14051/CA/NCI NIH HHS/ -- Howard Hughes Medical Institute/ -- England -- Nature. 2009 Nov 5;462(7269):104-7. doi: 10.1038/nature08462. Epub 2009 Oct 21.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Koch Institute for Integrative Cancer Research, and Department of Biology, and Howard Hughes Medical Institute, Massachusetts Institute of Technology, 77 Massachusetts Avenue, Cambridge, Massachusetts 02139, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/19847165" target="_blank"〉PubMed〈/a〉
    Keywords: Adenocarcinoma/*metabolism/*pathology ; Animals ; Apoptosis ; Carcinoma, Non-Small-Cell Lung/metabolism/pathology ; Cell Line ; Cell Line, Tumor ; Cell Survival ; Cells, Cultured ; DNA/metabolism ; *Disease Models, Animal ; Fibroblasts ; Genes, p53/genetics ; Humans ; Lung Neoplasms/*metabolism/*pathology ; Mice ; NF-kappa B/antagonists & inhibitors/*metabolism ; Oncogene Protein p21(ras)/genetics/metabolism ; *Signal Transduction ; Transcription Factor RelA/metabolism ; Tumor Suppressor Protein p53/deficiency/genetics/metabolism
    Print ISSN: 0028-0836
    Electronic ISSN: 1476-4687
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
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  • 3
    Publication Date: 2009-02-03
    Description: There is growing recognition that mammalian cells produce many thousands of large intergenic transcripts. However, the functional significance of these transcripts has been particularly controversial. Although there are some well-characterized examples, most (〉95%) show little evidence of evolutionary conservation and have been suggested to represent transcriptional noise. Here we report a new approach to identifying large non-coding RNAs using chromatin-state maps to discover discrete transcriptional units intervening known protein-coding loci. Our approach identified approximately 1,600 large multi-exonic RNAs across four mouse cell types. In sharp contrast to previous collections, these large intervening non-coding RNAs (lincRNAs) show strong purifying selection in their genomic loci, exonic sequences and promoter regions, with greater than 95% showing clear evolutionary conservation. We also developed a functional genomics approach that assigns putative functions to each lincRNA, demonstrating a diverse range of roles for lincRNAs in processes from embryonic stem cell pluripotency to cell proliferation. We obtained independent functional validation for the predictions for over 100 lincRNAs, using cell-based assays. In particular, we demonstrate that specific lincRNAs are transcriptionally regulated by key transcription factors in these processes such as p53, NFkappaB, Sox2, Oct4 (also known as Pou5f1) and Nanog. Together, these results define a unique collection of functional lincRNAs that are highly conserved and implicated in diverse biological processes.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2754849/" 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/PMC2754849/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Guttman, Mitchell -- Amit, Ido -- Garber, Manuel -- French, Courtney -- Lin, Michael F -- Feldser, David -- Huarte, Maite -- Zuk, Or -- Carey, Bryce W -- Cassady, John P -- Cabili, Moran N -- Jaenisch, Rudolf -- Mikkelsen, Tarjei S -- Jacks, Tyler -- Hacohen, Nir -- Bernstein, Bradley E -- Kellis, Manolis -- Regev, Aviv -- Rinn, John L -- Lander, Eric S -- DP1 OD003958/OD/NIH HHS/ -- R01 HG004037/HG/NHGRI NIH HHS/ -- R01 HG004037-02/HG/NHGRI NIH HHS/ -- U54 HG003067/HG/NHGRI NIH HHS/ -- U54 HG003067-05/HG/NHGRI NIH HHS/ -- England -- Nature. 2009 Mar 12;458(7235):223-7. doi: 10.1038/nature07672. Epub 2009 Feb 1.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Broad Institute of MIT and Harvard, 7 Cambridge Center, Cambridge, Massachusetts 02142, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/19182780" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Base Sequence ; Cells, Cultured ; Chromatin/*genetics ; *Conserved Sequence/genetics ; DNA, Intergenic ; Exons/genetics ; Mammals/*genetics ; Mice ; Promoter Regions, Genetic/genetics ; RNA/*genetics ; Reproducibility of Results ; Transcription Factors/metabolism
    Print ISSN: 0028-0836
    Electronic ISSN: 1476-4687
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
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  • 4
    Publication Date: 2009-10-23
    Description: The proto-oncogene KRAS is mutated in a wide array of human cancers, most of which are aggressive and respond poorly to standard therapies. Although the identification of specific oncogenes has led to the development of clinically effective, molecularly targeted therapies in some cases, KRAS has remained refractory to this approach. A complementary strategy for targeting KRAS is to identify gene products that, when inhibited, result in cell death only in the presence of an oncogenic allele. Here we have used systematic RNA interference to detect synthetic lethal partners of oncogenic KRAS and found that the non-canonical IkappaB kinase TBK1 was selectively essential in cells that contain mutant KRAS. Suppression of TBK1 induced apoptosis specifically in human cancer cell lines that depend on oncogenic KRAS expression. In these cells, TBK1 activated NF-kappaB anti-apoptotic signals involving c-Rel and BCL-XL (also known as BCL2L1) that were essential for survival, providing mechanistic insights into this synthetic lethal interaction. These observations indicate that TBK1 and NF-kappaB signalling are essential in KRAS mutant tumours, and establish a general approach for the rational identification of co-dependent pathways in cancer.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2783335/" 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/PMC2783335/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Barbie, David A -- Tamayo, Pablo -- Boehm, Jesse S -- Kim, So Young -- Moody, Susan E -- Dunn, Ian F -- Schinzel, Anna C -- Sandy, Peter -- Meylan, Etienne -- Scholl, Claudia -- Frohling, Stefan -- Chan, Edmond M -- Sos, Martin L -- Michel, Kathrin -- Mermel, Craig -- Silver, Serena J -- Weir, Barbara A -- Reiling, Jan H -- Sheng, Qing -- Gupta, Piyush B -- Wadlow, Raymond C -- Le, Hanh -- Hoersch, Sebastian -- Wittner, Ben S -- Ramaswamy, Sridhar -- Livingston, David M -- Sabatini, David M -- Meyerson, Matthew -- Thomas, Roman K -- Lander, Eric S -- Mesirov, Jill P -- Root, David E -- Gilliland, D Gary -- Jacks, Tyler -- Hahn, William C -- R01 CA129105/CA/NCI NIH HHS/ -- R01 CA129105-03/CA/NCI NIH HHS/ -- R01 CA130988/CA/NCI NIH HHS/ -- R01 CA130988-01A2/CA/NCI NIH HHS/ -- R33 CA128625/CA/NCI NIH HHS/ -- R33 CA128625-01A1/CA/NCI NIH HHS/ -- R33 CA128625-02/CA/NCI NIH HHS/ -- T32 CA009172/CA/NCI NIH HHS/ -- T32 CA09172-33/CA/NCI NIH HHS/ -- T32 GM007753/GM/NIGMS NIH HHS/ -- England -- Nature. 2009 Nov 5;462(7269):108-12. doi: 10.1038/nature08460. Epub 2009 Oct 21.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Medical Oncology, Dana-Farber Cancer Institute, 44 Binney Street, Boston, Massachusetts 02115 USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/19847166" target="_blank"〉PubMed〈/a〉
    Keywords: Alleles ; Apoptosis ; Cell Line, Tumor ; Cell Survival ; Gene Expression Profiling ; Genes, Lethal ; Genes, ras/*genetics ; Humans ; Lung Neoplasms/genetics/metabolism/pathology ; Neoplasms/genetics/metabolism/pathology ; Oncogene Protein p21(ras)/*genetics/*metabolism ; Protein-Serine-Threonine Kinases/antagonists & inhibitors/*metabolism ; Proto-Oncogene Proteins c-rel/metabolism ; *RNA Interference ; Signal Transduction ; bcl-X Protein/metabolism
    Print ISSN: 0028-0836
    Electronic ISSN: 1476-4687
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
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  • 5
    Publication Date: 2010-11-26
    Description: Tumorigenesis is a multistep process that results from the sequential accumulation of mutations in key oncogene and tumour suppressor pathways. Personalized cancer therapy that is based on targeting these underlying genetic abnormalities presupposes that sustained inactivation of tumour suppressors and activation of oncogenes is essential in advanced cancers. Mutations in the p53 tumour-suppressor pathway are common in human cancer and significant efforts towards pharmaceutical reactivation of defective p53 pathways are underway. Here we show that restoration of p53 in established murine lung tumours leads to significant but incomplete tumour cell loss specifically in malignant adenocarcinomas, but not in adenomas. We define amplification of MAPK signalling as a critical determinant of malignant progression and also a stimulator of Arf tumour-suppressor expression. The response to p53 restoration in this context is critically dependent on the expression of Arf. We propose that p53 not only limits malignant progression by suppressing the acquisition of alterations that lead to tumour progression, but also, in the context of p53 restoration, responds to increased oncogenic signalling to mediate tumour regression. Our observations also underscore that the p53 pathway is not engaged by low levels of oncogene activity that are sufficient for early stages of lung tumour development. These data suggest that restoration of pathways important in tumour progression, as opposed to initiation, may lead to incomplete tumour regression due to the stage-heterogeneity of tumour cell populations.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3003305/" 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/PMC3003305/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Feldser, David M -- Kostova, Kamena K -- Winslow, Monte M -- Taylor, Sarah E -- Cashman, Chris -- Whittaker, Charles A -- Sanchez-Rivera, Francisco J -- Resnick, Rebecca -- Bronson, Roderick -- Hemann, Michael T -- Jacks, Tyler -- P30 CA014051/CA/NCI NIH HHS/ -- P30 CA014051-37/CA/NCI NIH HHS/ -- P30 CA014051-38/CA/NCI NIH HHS/ -- P30 CA014051-39/CA/NCI NIH HHS/ -- P30 CA014051-40/CA/NCI NIH HHS/ -- P30-CA14051/CA/NCI NIH HHS/ -- Howard Hughes Medical Institute/ -- England -- Nature. 2010 Nov 25;468(7323):572-5. doi: 10.1038/nature09535.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Koch Institute for Integrative Cancer Research, Department of Biology, and Howard Hughes Medical Institute, Massachusetts Institute of Technology, 77 Massachusetts Avenue, Cambridge, Massachusetts 02139, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/21107428" target="_blank"〉PubMed〈/a〉
    Keywords: Adenocarcinoma/metabolism/*physiopathology ; Adenoma/metabolism/*physiopathology ; Animals ; Cell Proliferation ; *Disease Progression ; Lung Neoplasms/*physiopathology ; Mice ; Mice, Inbred C57BL ; Mitogen-Activated Protein Kinases/metabolism ; Signal Transduction ; Tumor Suppressor Protein p53/genetics/*metabolism
    Print ISSN: 0028-0836
    Electronic ISSN: 1476-4687
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
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  • 6
    Publication Date: 2009-12-19
    Description: Acute exposure to ionizing radiation can cause lethal damage to the gastrointestinal (GI) tract, a condition called the GI syndrome. Whether the target cells affected by radiation to cause the GI syndrome are derived from the epithelium or endothelium and whether the target cells die by apoptosis or other mechanisms are controversial issues. Studying mouse models, we found that selective deletion of the proapoptotic genes Bak1 and Bax from the GI epithelium or from endothelial cells did not protect mice from developing the GI syndrome after sub-total-body gamma irradiation. In contrast, selective deletion of p53 from the GI epithelium, but not from endothelial cells, sensitized irradiated mice to the GI syndrome. Transgenic mice overexpressing p53 in all tissues were protected from the GI syndrome after irradiation. These results suggest that the GI syndrome is caused by the death of GI epithelial cells and that these epithelial cells die by a mechanism that is regulated by p53 but independent of apoptosis.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2897160/" 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/PMC2897160/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Kirsch, David G -- Santiago, Philip M -- di Tomaso, Emmanuelle -- Sullivan, Julie M -- Hou, Wu-Shiun -- Dayton, Talya -- Jeffords, Laura B -- Sodha, Pooja -- Mercer, Kim L -- Cohen, Rhianna -- Takeuchi, Osamu -- Korsmeyer, Stanley J -- Bronson, Roderick T -- Kim, Carla F -- Haigis, Kevin M -- Jain, Rakesh K -- Jacks, Tyler -- K08 CA 114176/CA/NCI NIH HHS/ -- K08 CA114176/CA/NCI NIH HHS/ -- K08 CA114176-05/CA/NCI NIH HHS/ -- P01 CA080124/CA/NCI NIH HHS/ -- P01 CA080124-01A1/CA/NCI NIH HHS/ -- P01 CA80124/CA/NCI NIH HHS/ -- P30 CA014051/CA/NCI NIH HHS/ -- P30 CA014051-38/CA/NCI NIH HHS/ -- P30 DK043351/DK/NIDDK NIH HHS/ -- P30-CA14051/CA/NCI NIH HHS/ -- RC1 AI078521/AI/NIAID NIH HHS/ -- RC1 AI078521-01/AI/NIAID NIH HHS/ -- RC1-AI078521/AI/NIAID NIH HHS/ -- U19-AI06775/AI/NIAID NIH HHS/ -- Howard Hughes Medical Institute/ -- New York, N.Y. -- Science. 2010 Jan 29;327(5965):593-6. doi: 10.1126/science.1166202. Epub 2009 Dec 17.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉David H. Koch Institute for Integrative Cancer Research, Massachusetts Institute of Technology, Cambridge, MA 02139, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/20019247" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; *Apoptosis ; Cell Death ; Epithelial Cells/cytology/physiology/radiation effects ; Gamma Rays/*adverse effects ; Gene Deletion ; Genes, p53 ; Intestinal Diseases/etiology/pathology/*physiopathology ; Intestinal Mucosa/pathology/physiopathology/*radiation effects ; Intestine, Small/pathology/physiopathology/*radiation effects ; Mesoderm/cytology ; Mice ; Mice, Transgenic ; Models, Biological ; Radiation Dosage ; Radiation Injuries/etiology/pathology/*physiopathology ; Tumor Suppressor Protein p53/*physiology ; bcl-2 Homologous Antagonist-Killer Protein/genetics/metabolism ; bcl-2-Associated X Protein/genetics/metabolism
    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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    American Association for the Advancement of Science (AAAS)
    Publication Date: 2013-03-09
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Joshi, Nikhil S -- Jacks, Tyler -- Howard Hughes Medical Institute/ -- New York, N.Y. -- Science. 2013 Mar 8;339(6124):1160-1. doi: 10.1126/science.1235528.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Koch Institute for Integrative Cancer Research, Department of Biology, and Howard Hughes Medical Institute, Massachusetts Institute of Technology, Cambridge, MA 02139, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/23471395" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Female ; *Immune Tolerance ; Male ; Prostate/*immunology ; Prostatic Neoplasms/*immunology ; T-Lymphocytes, Regulatory/*immunology ; Thymus Gland/*growth & development/*immunology ; Transcription Factors/*immunology
    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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  • 8
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 1998-06-06
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Jacks, T -- Weinberg, R A -- New York, N.Y. -- Science. 1998 May 15;280(5366):1035-6.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Biology, Massachusetts Institute of Technology, Cambridge, MA 02142, USA. tjacks@mit.edu〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/9616080" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; *Cell Cycle ; *Cell Cycle Proteins ; *Cell Differentiation ; Cyclin D1/metabolism ; Cyclin-Dependent Kinase Inhibitor Proteins ; Cyclin-Dependent Kinase Inhibitor p21 ; Cyclin-Dependent Kinases/antagonists & inhibitors/metabolism ; Cyclins/*metabolism ; Enzyme Inhibitors/*metabolism ; Fungal Proteins/metabolism ; Proliferating Cell Nuclear Antigen/metabolism ; Protein-Serine-Threonine Kinases/metabolism ; Receptors, Estrogen/metabolism ; *Repressor Proteins ; Retinoblastoma Protein/metabolism ; *Saccharomyces cerevisiae Proteins
    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
    Publication Date: 2014-10-23
    Description: Cancer is a multistep process that involves mutations and other alterations in oncogenes and tumour suppressor genes. Genome sequencing studies have identified a large collection of genetic alterations that occur in human cancers. However, the determination of which mutations are causally related to tumorigenesis remains a major challenge. Here we describe a novel CRISPR/Cas9-based approach for rapid functional investigation of candidate genes in well-established autochthonous mouse models of cancer. Using a Kras(G12D)-driven lung cancer model, we performed functional characterization of a panel of tumour suppressor genes with known loss-of-function alterations in human lung cancer. Cre-dependent somatic activation of oncogenic Kras(G12D) combined with CRISPR/Cas9-mediated genome editing of tumour suppressor genes resulted in lung adenocarcinomas with distinct histopathological and molecular features. This rapid somatic genome engineering approach enables functional characterization of putative cancer genes in the lung and other tissues using autochthonous mouse models. We anticipate that this approach can be used to systematically dissect the complex catalogue of mutations identified in cancer genome sequencing studies.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4292871/" 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/PMC4292871/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Sanchez-Rivera, Francisco J -- Papagiannakopoulos, Thales -- Romero, Rodrigo -- Tammela, Tuomas -- Bauer, Matthew R -- Bhutkar, Arjun -- Joshi, Nikhil S -- Subbaraj, Lakshmipriya -- Bronson, Roderick T -- Xue, Wen -- Jacks, Tyler -- K99 CA169512/CA/NCI NIH HHS/ -- P30 CA014051/CA/NCI NIH HHS/ -- P30-CA14051/CA/NCI NIH HHS/ -- R00 CA169512/CA/NCI NIH HHS/ -- T32 GM007287/GM/NIGMS NIH HHS/ -- Howard Hughes Medical Institute/ -- England -- Nature. 2014 Dec 18;516(7531):428-31. doi: 10.1038/nature13906. Epub 2014 Oct 22.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉1] David H. Koch Institute for Integrative Cancer Research, Massachusetts Institute of Technology, Cambridge, Massachusetts 02142, USA [2] Department of Biology, Massachusetts Institute of Technology, Cambridge, Massachusetts 02142, USA. ; David H. Koch Institute for Integrative Cancer Research, Massachusetts Institute of Technology, Cambridge, Massachusetts 02142, USA. ; 1] Tufts University, Boston, Massachusetts 02115, USA [2] Harvard Medical School, Boston, Massachusetts 02115, USA. ; 1] David H. Koch Institute for Integrative Cancer Research, Massachusetts Institute of Technology, Cambridge, Massachusetts 02142, USA [2] Department of Biology, Massachusetts Institute of Technology, Cambridge, Massachusetts 02142, USA [3] Howard Hughes Medical Institute, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/25337879" target="_blank"〉PubMed〈/a〉
    Keywords: Adenocarcinoma/*genetics/pathology ; Animals ; *Caspase 9 ; *Clustered Regularly Interspaced Short Palindromic Repeats ; Disease Models, Animal ; Genes, Tumor Suppressor ; *Genetic Engineering ; Genome/*genetics ; Humans ; Lentivirus/genetics ; Lung Neoplasms/*genetics/pathology ; Mice ; Mice, Inbred C57BL ; Models, Genetic ; Mutation/genetics
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    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
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  • 10
    Publication Date: 2011-04-08
    Description: Despite the high prevalence and poor outcome of patients with metastatic lung cancer the mechanisms of tumour progression and metastasis remain largely uncharacterized. Here we modelled human lung adenocarcinoma, which frequently harbours activating point mutations in KRAS and inactivation of the p53 pathway, using conditional alleles in mice. Lentiviral-mediated somatic activation of oncogenic Kras and deletion of p53 in the lung epithelial cells of Kras(LSL-G12D/+);p53(flox/flox) mice initiates lung adenocarcinoma development. Although tumours are initiated synchronously by defined genetic alterations, only a subset becomes malignant, indicating that disease progression requires additional alterations. Identification of the lentiviral integration sites allowed us to distinguish metastatic from non-metastatic tumours and determine the gene expression alterations that distinguish these tumour types. Cross-species analysis identified the NK2-related homeobox transcription factor Nkx2-1 (also called Ttf-1 or Titf1) as a candidate suppressor of malignant progression. In this mouse model, Nkx2-1 negativity is pathognomonic of high-grade poorly differentiated tumours. Gain- and loss-of-function experiments in cells derived from metastatic and non-metastatic tumours demonstrated that Nkx2-1 controls tumour differentiation and limits metastatic potential in vivo. Interrogation of Nkx2-1-regulated genes, analysis of tumours at defined developmental stages, and functional complementation experiments indicate that Nkx2-1 constrains tumours in part by repressing the embryonically restricted chromatin regulator Hmga2. Whereas focal amplification of NKX2-1 in a fraction of human lung adenocarcinomas has focused attention on its oncogenic function, our data specifically link Nkx2-1 downregulation to loss of differentiation, enhanced tumour seeding ability and increased metastatic proclivity. Thus, the oncogenic and suppressive functions of Nkx2-1 in the same tumour type substantiate its role as a dual function lineage factor.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3088778/" 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/PMC3088778/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Winslow, Monte M -- Dayton, Talya L -- Verhaak, Roel G W -- Kim-Kiselak, Caroline -- Snyder, Eric L -- Feldser, David M -- Hubbard, Diana D -- DuPage, Michel J -- Whittaker, Charles A -- Hoersch, Sebastian -- Yoon, Stephanie -- Crowley, Denise -- Bronson, Roderick T -- Chiang, Derek Y -- Meyerson, Matthew -- Jacks, Tyler -- K08 CA154784/CA/NCI NIH HHS/ -- K99-CA151968/CA/NCI NIH HHS/ -- P30 CA014051/CA/NCI NIH HHS/ -- P30 CA014051-36/CA/NCI NIH HHS/ -- P30 CA014051-37/CA/NCI NIH HHS/ -- P30 CA014051-38/CA/NCI NIH HHS/ -- P30 CA014051-39/CA/NCI NIH HHS/ -- P30 CA014051-40/CA/NCI NIH HHS/ -- P30-CA14051/CA/NCI NIH HHS/ -- R00 CA151968/CA/NCI NIH HHS/ -- R01 CA109038/CA/NCI NIH HHS/ -- T32-HL007627/HL/NHLBI NIH HHS/ -- U01 CA084306/CA/NCI NIH HHS/ -- U01 CA084306-11/CA/NCI NIH HHS/ -- U01 CA084306-12/CA/NCI NIH HHS/ -- U01 CA084306-13/CA/NCI NIH HHS/ -- U01-CA84306/CA/NCI NIH HHS/ -- Howard Hughes Medical Institute/ -- England -- Nature. 2011 May 5;473(7345):101-4. doi: 10.1038/nature09881. Epub 2011 Apr 6.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉David H. Koch Institute for Integrative Cancer Research, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/21471965" target="_blank"〉PubMed〈/a〉
    Keywords: Adenocarcinoma/genetics/physiopathology ; Animals ; Cell Differentiation ; Cell Line, Tumor ; Disease Models, Animal ; Down-Regulation ; *Gene Expression Regulation, Neoplastic ; HMGA2 Protein/genetics ; Humans ; Lung Neoplasms/genetics/physiopathology ; Mice ; Nuclear Proteins/*genetics/*metabolism ; Transcription Factors/*genetics/*metabolism
    Print ISSN: 0028-0836
    Electronic ISSN: 1476-4687
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
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