Abstract:
:Although Apc is well characterized as a tumor-suppressor gene in the intestine, the precise mechanism of this suppression remains to be defined. Using a novel inducible Ahcre transgenic line in conjunction with a loxP-flanked Apc allele we, show that loss of Apc acutely activates Wnt signaling through the nuclear accumulation of beta-catenin. Coincidentally, it perturbs differentiation, migration, proliferation, and apoptosis, such that Apc-deficient cells maintain a "crypt progenitor-like" phenotype. Critically, for the first time we confirm a series of Wnt target molecules in an in vivo setting and also identify a series of new candidate targets within the same setting.
journal_name
Genes Devjournal_title
Genes & developmentauthors
Sansom OJ,Reed KR,Hayes AJ,Ireland H,Brinkmann H,Newton IP,Batlle E,Simon-Assmann P,Clevers H,Nathke IS,Clarke AR,Winton DJdoi
10.1101/gad.287404subject
Has Abstractpub_date
2004-06-15 00:00:00pages
1385-90issue
12eissn
0890-9369issn
1549-5477pii
18/12/1385journal_volume
18pub_type
杂志文章abstract::Mediator was resolved from yeast as a multiprotein complex on the basis of its requirement for transcriptional activation in a fully defined system. Three groups of mediator polypeptides could be distinguished: the products of five SRB genes, identified as suppressors of carboxy-terminal domain (CTD)-truncation mutant...
journal_title:Genes & development
pub_type: 杂志文章
doi:10.1101/gad.12.1.45
更新日期:1998-01-01 00:00:00
abstract::Expression of the Arabidopsis CGS1 gene that codes for cystathionine gamma-synthase is feedback regulated at the step of mRNA stability in response to S-adenosyl-L-methionine (AdoMet). A short stretch of amino acid sequence, called the MTO1 region, encoded by the first exon of CGS1 itself is involved in this regulatio...
journal_title:Genes & development
pub_type: 杂志文章
doi:10.1101/gad.1317105
更新日期:2005-08-01 00:00:00
abstract::Organization into polarized three-dimensional structures defines whether epithelial cells are normal or malignant. In a model of morphogenesis, we show that inhibiting key signaling pathways in human breast cancer cells leads to "phenotypic reversion" of the malignant cells. Using architecture as an endpoint, we repor...
journal_title:Genes & development
pub_type: 杂志文章
doi:10.1101/gad.1990410
更新日期:2010-12-15 00:00:00
abstract::Plectin, a major linker and scaffolding protein of the cytoskeleton, has been shown to be essential for the mechanical integrity of skin, skeletal muscle, and heart. Studying fibroblast and astroglial cell cultures derived from plectin (-/-) mice, we found that their actin cytoskeleton, including focal adhesion contac...
journal_title:Genes & development
pub_type: 杂志文章
doi:10.1101/gad.12.21.3442
更新日期:1998-11-01 00:00:00
abstract::Metazoans start embryogenesis with a relatively naïve genome. The transcriptionally inert, late-replicating heterochromatic regions, including the constitutive heterochromatin on repetitive sequences near centromeres and telomeres, need to be re-established during development. To explore the events initiating heteroch...
journal_title:Genes & development
pub_type: 杂志文章
doi:10.1101/gad.272237.115
更新日期:2016-03-01 00:00:00
abstract::The superoxide radical (O(2)(-)) has long been considered a major cause of aging. O(2)(-) in cytosolic, extracellular, and mitochondrial pools is detoxified by dedicated superoxide dismutase (SOD) isoforms. We tested the impact of each SOD isoform in Caenorhabditis elegans by manipulating its five sod genes and saw no...
journal_title:Genes & development
pub_type: 杂志文章
doi:10.1101/gad.504808
更新日期:2008-12-01 00:00:00
abstract::The hair follicle undergoes a lifelong developmental cycle that depends on the integration between activating and inhibitory signals acting to regulate and guide the proliferation and differentiation of pluripotent epithelial stem cells. The effectors and mechanisms responsible for re-entry of quiescent telogen hair f...
journal_title:Genes & development
pub_type: 评论,杂志文章
doi:10.1101/gad.223172.113
更新日期:2013-06-15 00:00:00
abstract::The c-fos serum response element (SRE) is a multifunctional regulatory region of the c-fos promoter that responds to a variety of inducers. Recently, we have demonstrated that the SRE binds the C/EBP-related transcription factor rat NFIL-6 (rNFIL-6). In this study we show that rNFIL-6 is regulated by the cAMP second m...
journal_title:Genes & development
pub_type: 杂志文章
doi:10.1101/gad.5.10.1754
更新日期:1991-10-01 00:00:00
abstract::The nonsense-mediated mRNA decay (NMD) pathway selectively degrades mRNAs harboring premature termination codons (PTCs). Seven genes (smg-1-7, for suppressor with morphological effect on genitalia) that are essential for NMD were originally identified in the nematode Caenorhabditis elegans, and orthologs of these gene...
journal_title:Genes & development
pub_type: 杂志文章
doi:10.1101/gad.417707
更新日期:2007-05-01 00:00:00
abstract::The third-chromosome mutation Killer of prune (K-pn) causes no phenotype by itself, but causes lethality in individuals homozygous for the nonlethal X-chromosome mutation prune (pn). We have recovered 12 gamma-ray-induced revertants of Killer of prune. All of the revertants fail to complement a recessive cell lethal m...
journal_title:Genes & development
pub_type: 杂志文章
doi:10.1101/gad.2.10.1333
更新日期:1988-10-01 00:00:00
abstract::The number of known long noncoding RNA (lncRNA) functions is rapidly growing, but how those functions are encoded in their sequence and structure remains poorly understood. NORAD (noncoding RNA activated by DNA damage) is a recently characterized, abundant, and highly conserved lncRNA that is required for proper mitot...
journal_title:Genes & development
pub_type: 杂志文章
doi:10.1101/gad.309138.117
更新日期:2018-01-01 00:00:00
abstract::Exposure of hematopoietic progenitors to gamma-irradiation (IR) induces p53-dependent apoptosis and a p53-independent G2/M cell cycle arrest. These responses to DNA-damage can be inhibited by treatment with cytokine growth factors. Here we report that gamma-IR-induced apoptosis and cell cycle arrest are suppressed by ...
journal_title:Genes & development
pub_type: 杂志文章
doi:10.1101/gad.12.8.1099
更新日期:1998-04-15 00:00:00
abstract::The cooperation of oncogenes in the transformation of primary rat Schwann cells is a strikingly synergistic process. We have explored the molecular mechanisms involved. Activation of an inducible Raf kinase results in morphologically transformed cells that are arrested in G1 via the induction of p21(CiP1) and subseque...
journal_title:Genes & development
pub_type: 杂志文章
doi:10.1101/gad.11.5.663
更新日期:1997-03-01 00:00:00
abstract::Macrophages play critical roles in events ranging from host defense to obesity and cancer, where they infiltrate affected tissues and orchestrate immune responses in tandem with the remodeling of the extracellular matrix (ECM). Despite the dual roles played by macrophages in inflammation, the functions of macrophage-d...
journal_title:Genes & development
pub_type: 杂志文章
doi:10.1101/gad.178749.111
更新日期:2012-02-15 00:00:00
abstract::The Ultrabithorax (Ubx) gene of Drosophila melanogaster encodes a family of UBX proteins that are thought to specify the developmental fates of segments in the posterior thorax and anterior abdomen by controlling the expression of a set of target genes. UBX proteins bind DNA in vitro, and they activate or repress diff...
journal_title:Genes & development
pub_type: 杂志文章
doi:10.1101/gad.4.6.1044
更新日期:1990-06-01 00:00:00
abstract::We have purified and cloned a new splicing factor, KSRP. KSRP is a component of a multiprotein complex that binds specifically to an intronic splicing enhancer element downstream of the neuron-specific c-src N1 exon. This 75-kD protein induces the assembly of five other proteins, including the heterogeneous nuclear ri...
journal_title:Genes & development
pub_type: 杂志文章
doi:10.1101/gad.11.8.1023
更新日期:1997-04-15 00:00:00
abstract::Calcineurin, a Ca2+/calmodulin dependent protein phosphatase, regulates Ca2+-dependent processes in a wide variety of cells. In the yeast, Saccharomyces cerevisiae, calcineurin effects Ca2+-dependent changes in gene expression through regulation of the Crz1p transcription factor. We show here that calcineurin dephosph...
journal_title:Genes & development
pub_type: 杂志文章
doi:10.1101/gad.13.7.798
更新日期:1999-04-01 00:00:00
abstract::Human TFIIA activity is composed of three subunits (alpha, beta, gamma). Here we report the isolation of a human cDNA clone encoding the gamma-subunit and the reconstitution of TFIIA activity from recombinant polypeptides (holo-TFIIA). Protein-protein interaction analysis established that the beta and gamma subunits o...
journal_title:Genes & development
pub_type: 杂志文章
doi:10.1101/gad.8.19.2336
更新日期:1994-10-01 00:00:00
abstract::Early endoderm formation in zebrafish requires at least three loci that function downstream of Nodal signaling but upstream of the early endodermal marker sox17: bonnie and clyde (bon), faust (fau), and casanova (cas). cas mutants show the most severe phenotype as they do not form any gut tissue and lack all sox17 exp...
journal_title:Genes & development
pub_type: 杂志文章
doi:10.1101/gad.892301
更新日期:2001-06-15 00:00:00
abstract::Pseudoplasmodia of developing Dictyostelium are organized with anteroposterior polarity. We have isolated CAR4, the gene for a new cell-surface, G protein-linked cAMP receptor. CAR4 mRNA is initially expressed during tip elongation and continues to accumulate into culmination. CAR4 is maximally expressed in pseudoplas...
journal_title:Genes & development
pub_type: 杂志文章
doi:10.1101/gad.8.17.2086
更新日期:1994-09-01 00:00:00
abstract::Histone deacetylase 3 (HDAC3) is one of four members of the human class I HDACs that regulates gene expression by deacetylation of histones and nonhistone proteins. Early studies have suggested that HDAC3 activity is regulated by association with the corepressors N-CoR and SMRT. Here we demonstrate that, in addition t...
journal_title:Genes & development
pub_type: 杂志文章
doi:10.1101/gad.1286005
更新日期:2005-04-01 00:00:00
abstract::Transcription factor IIA has been shown to interact with the TATA-binding protein and to act early during preinitiation complex formation. The human factor is composed of three subunits (alpha, beta, gamma). A human cDNA clone encoding the largest subunit of TFIIA (alpha) was isolated. The recombinant alpha polypeptid...
journal_title:Genes & development
pub_type: 杂志文章
doi:10.1101/gad.7.11.2246
更新日期:1993-11-01 00:00:00
abstract::Overexpression of the type II transmembrane serine protease matriptase is a highly consistent feature of human epithelial tumors. Here we show that matriptase possesses a strong oncogenic potential when unopposed by its endogenous inhibitor, HAI-1. Modest orthotopic overexpression of matriptase in the skin of transgen...
journal_title:Genes & development
pub_type: 杂志文章
doi:10.1101/gad.1300705
更新日期:2005-08-15 00:00:00
abstract::Growth of numerous cancer types is believed to be driven by a subpopulation of poorly differentiated cells, often referred to as cancer stem cells (CSCs), that have the capacity for self-renewal, tumor initiation, and generation of nontumorigenic progeny. Despite their potentially key role in tumor establishment and m...
journal_title:Genes & development
pub_type: 杂志文章
doi:10.1101/gad.188292.112
更新日期:2012-09-01 00:00:00
abstract::We characterized a gene, extradenticle, which seems to interact with a specific subset of Drosophila homeo domain proteins, possibly affecting their target specificity. This interpretation is based on an examination of the zygotic and maternal effect phenotypes of extradenticle mutations. In embryos with reduced level...
journal_title:Genes & development
pub_type: 杂志文章
doi:10.1101/gad.4.7.1209
更新日期:1990-07-01 00:00:00
abstract::The epidemic of obesity and diabetes is causing an increased incidence of dyslipidemia-related heart failure. While the primary etiology of lipotoxic cardiomyopathy is an elevation of lipid levels resulting from an imbalance in energy availability and expenditure, increasing evidence suggests a relationship between dy...
journal_title:Genes & development
pub_type: 杂志文章
doi:10.1101/gad.1992411
更新日期:2011-01-15 00:00:00
abstract::To investigate functional differences between RNA polymerases IIA and IIO (Pol IIA and Pol IIO), with hypo- and hyperphosphorylated carboxy-terminal repeat domains (CTDs), respectively, we have visualized the in vivo distributions of the differentially phosphorylated forms of Pol II on Drosophila polytene chromosomes....
journal_title:Genes & development
pub_type: 杂志文章
doi:10.1101/gad.7.12a.2329
更新日期:1993-12-01 00:00:00
abstract::Genome integrity is constantly monitored by sophisticated cellular networks, collectively termed the DNA damage response (DDR). A common feature of DDR proteins is their mobilization in response to genotoxic stress. Here, we outline how the development of various complementary methodologies has provided valuable insig...
journal_title:Genes & development
pub_type: 杂志文章,评审
doi:10.1101/gad.2021311
更新日期:2011-03-01 00:00:00
abstract::Structural cell-surface and extracellular-matrix proteins modulate intercellular signaling events during development, but how this is achieved remains largely unknown. Here we identify a novel family of Drosophila proteins, Nasrat and Polehole, that coat the oocyte surface and play two roles: They mediate assembly of ...
journal_title:Genes & development
pub_type: 杂志文章
doi:10.1101/gad.223902
更新日期:2002-04-15 00:00:00
abstract::RNAi has revolutionized reverse genetics; however, RNAi is not necessarily ubiquitous or constitutive. Lund and colleagues (pp. 1121-1131) show that microRNA (miRNA) effector Argonautes (Agos) are limiting and easily saturated during early Xenopus embryogenesis. Moreover, this stage is devoid of slicing capacity. Supp...
journal_title:Genes & development
pub_type: 评论,杂志文章
doi:10.1101/gad.2062911
更新日期:2011-06-01 00:00:00