Abstract:
:Fibroblasts transformed by Fos oncogenes display increased expression of a number of genes implicated in tumor cell invasion and metastasis. In contrast to normal 208F rat fibroblasts, Fos-transformed 208F fibroblasts are growth factor independent for invasion. We demonstrate that invasion of v-Fos- or epidermal growth factor (EGF)-transformed cells requires AP-1 activity. v-Fos-transformed cell invasion is inhibited by c-jun antisense oligonucleotides and by expression of a c-jun dominant negative mutant, TAM-67. EGF-induced invasion is inhibited by both c-fos and c-jun antisense oligonucleotides. CD44s, the standard form of a transmembrane receptor for hyaluronan, is implicated in tumor cell invasion and metastasis. We demonstrate that increased expression of CD44 in Fos- and EGF-transformed cells is dependent upon AP-1. CD44 antisense oligonucleotides reduce expression of CD44 in v-Fos- or EGF-transformed cells and inhibit invasion but not migration. Expression of a fusion protein between human CD44s and Aequorea victoria green fluorescent protein (GFP) in 208F cells complements the inhibition of invasion by the rat-specific CD44 antisense oligonucleotide. We further show that both v-Fos and EGF transformations result in a concentration of endogenous CD44 or exogenous CD44-GFP at the ends of pseudopodial cell extensions. These results support the hypothesis that one role of AP-1 in transformation is to activate a multigenic invasion program.
journal_name
Mol Cell Bioljournal_title
Molecular and cellular biologyauthors
Lamb RF,Hennigan RF,Turnbull K,Katsanakis KD,MacKenzie ED,Birnie GD,Ozanne BWdoi
10.1128/mcb.17.2.963subject
Has Abstractpub_date
1997-02-01 00:00:00pages
963-76issue
2eissn
0270-7306issn
1098-5549journal_volume
17pub_type
杂志文章abstract::All inbred strains of mice carry the Ren-1 structural gene, which encodes the renin-1 isozyme, the classical renin activity found in kidneys. In addition, some strains carry a second renin structural gene, Ren-2, which encodes the predominantly expressed submaxillary gland renin isozyme, renin-2. Ren-1 and Ren-2 exhib...
journal_title:Molecular and cellular biology
pub_type: 杂志文章
doi:10.1128/mcb.4.11.2321
更新日期:1984-11-01 00:00:00
abstract::EYA1 is known to be overexpressed in human breast cancer, in which the Myc protein is also accumulated in association with decreased phospho-T58 (pT58) levels. We have recently reported that EYA1 functions as a unique protein phosphatase to dephosphorylate Myc at pT58 to regulate Myc levels. However, it remains unclea...
journal_title:Molecular and cellular biology
pub_type: 杂志文章
doi:10.1128/MCB.00499-16
更新日期:2016-12-19 00:00:00
abstract::In a previous paper, we have shown that in the absence of stress, mouse embryonal carcinoma cells, like mouse early embryo multipotent cells, synthesize high levels of 89- and 70-kilodalton heat shock proteins (HSP)(O. Bensaude and M. Morange, EMBO J. 2:173-177, 1983). We report here the pattern of proteins synthesize...
journal_title:Molecular and cellular biology
pub_type: 杂志文章
doi:10.1128/mcb.4.4.730
更新日期:1984-04-01 00:00:00
abstract::In the acellular slime mold Physarum polycephalum, the several hundred genes coding for rRNA are located on linear extrachromosomal DNA molecules of a discrete size, 60 kilobases. Each molecule contains two genes that are arranged in a palindromic fashion and separated by a central spacer region. We investigated how r...
journal_title:Molecular and cellular biology
pub_type: 杂志文章
doi:10.1128/mcb.3.4.635
更新日期:1983-04-01 00:00:00
abstract::Activins and other members of the transforming growth factor beta family play a critical role in morphological changes of the epidermis that require epithelial cell movement. We investigated the molecular pathways in the transmission of activin signals that lead to actin reorganization and epithelial cell migration. W...
journal_title:Molecular and cellular biology
pub_type: 杂志文章
doi:10.1128/MCB.25.1.60-65.2005
更新日期:2005-01-01 00:00:00
abstract::p63 is a member of the p53 tumor suppressor gene family, which regulates downstream target gene expression by binding to sequence-specific response elements similar to those of p53. By using oligonucleotide expression microarray analysis and analyzing the promoters of p63-induced genes, we have identified novel p63-sp...
journal_title:Molecular and cellular biology
pub_type: 杂志文章
doi:10.1128/MCB.25.14.6077-6089.2005
更新日期:2005-07-01 00:00:00
abstract::The fibroblast integrin alpha11beta1 is a key receptor for fibrillar collagens. To study the potential function of alpha11 in vivo, we generated a null allele of the alpha11 gene. Integrin alpha11(-/-) mice are viable and fertile but display dwarfism with increased mortality, most probably due to severely defective in...
journal_title:Molecular and cellular biology
pub_type: 杂志文章
doi:10.1128/MCB.00041-07
更新日期:2007-06-01 00:00:00
abstract::SWI/SNF ATP-dependent chromatin remodeling complexes (remodelers) perform critical functions in eukaryotic gene expression control. BAP and PBAP are the fly representatives of the two evolutionarily conserved major subclasses of SWI/SNF remodelers. Both complexes share seven core subunits, including the Brahma ATPase,...
journal_title:Molecular and cellular biology
pub_type: 杂志文章
doi:10.1128/MCB.02217-07
更新日期:2008-05-01 00:00:00
abstract::Using nuclear runoff transcription assays we demonstrated that alpha interferon-mediated induction of transcription of four mRNAs in HeLa monolayer cells needed ongoing protein synthesis and that such a need could be obviated by pretreating the cells with gamma interferon which, by itself, did not induce transcription...
journal_title:Molecular and cellular biology
pub_type: 杂志文章
doi:10.1128/mcb.7.1.528
更新日期:1987-01-01 00:00:00
abstract::Resistance to the growth-inhibitory action of retinoic acid (RA), the bioactive derivative of vitamin A, is common in human tumors. One form of RA resistance has been associated with silencing and hypermethylation of the retinoic acid receptor beta2 gene (RARbeta2), an RA-regulated tumor suppressor gene. The presence ...
journal_title:Molecular and cellular biology
pub_type: 杂志文章
doi:10.1128/MCB.25.23.10591-10603.2005
更新日期:2005-12-01 00:00:00
abstract::Extragenic suppressors of a new temperature-sensitive mutation (act1-4) in the actin gene of Saccharomyces cerevisiae were isolated in an attempt to identify genes whose products interact directly with actin. One suppressor with a cold-sensitive growth phenotype defined the new gene, SAC7, which was mapped, cloned, se...
journal_title:Molecular and cellular biology
pub_type: 杂志文章
doi:10.1128/mcb.10.5.2308
更新日期:1990-05-01 00:00:00
abstract::In the "canonical" view of transforming growth factor beta (TGF-beta) signaling, Smad7 plays an inhibitory role. While Smad7 represses Smad3 activation by TGF-beta, it does not reverse the inhibitory effect of TGF-beta on myogenesis, suggesting a different function in myogenic cells. We previously reported a promyogen...
journal_title:Molecular and cellular biology
pub_type: 杂志文章
doi:10.1128/MCB.01005-09
更新日期:2010-02-01 00:00:00
abstract::Sensory hair cells convert mechanical motion into chemical signals. Otoferlin, a six-C2 domain transmembrane protein linked to deafness in humans, is hypothesized to play a role in exocytosis at hair cell ribbon synapses. To date, however, otoferlin has been studied almost exclusively in mouse models, and no rescue ex...
journal_title:Molecular and cellular biology
pub_type: 杂志文章
doi:10.1128/MCB.01439-14
更新日期:2015-03-01 00:00:00
abstract::Using an expression cDNA cloning approach, we examined human tumor cell lines for novel oncogenes that might evade detection by conventional techniques. We isolated a transforming sequence that was highly efficient in transforming NIH 3T3 mouse fibroblasts. DNA sequence analysis identified the gene as the human homolo...
journal_title:Molecular and cellular biology
pub_type: 杂志文章
doi:10.1128/mcb.13.2.762
更新日期:1993-02-01 00:00:00
abstract::X chromosome inactivation silences one of two X chromosomes in the mammalian female cell and is controlled by a binary switch that involves interactions between Xist and Tsix, a sense-antisense pair of noncoding genes. On the future active X chromosome, Tsix expression suppresses Xist upregulation, while on the future...
journal_title:Molecular and cellular biology
pub_type: 杂志文章
doi:10.1128/MCB.25.7.2757-2769.2005
更新日期:2005-04-01 00:00:00
abstract::In vitro mutagenesis was used to create putative opal suppressor alleles of a tRNA(Trp) gene of Saccharomyces cerevisiae. The construct with the requisite anticodon change did not result in an active suppressor, whereas when a second change was introduced into the portion of the gene encoding the intron, an active and...
journal_title:Molecular and cellular biology
pub_type: 杂志文章
doi:10.1128/mcb.10.8.4379
更新日期:1990-08-01 00:00:00
abstract::The Wnt/β-catenin signaling pathway plays crucial roles in early hindbrain formation, and its constitutive activity is associated with a subset of human medulloblastoma, a malignant childhood tumor of the posterior fossa. However, the precise function of Wnt/β-catenin signaling during cerebellar development is still e...
journal_title:Molecular and cellular biology
pub_type: 杂志文章
doi:10.1128/MCB.05718-11
更新日期:2011-08-01 00:00:00
abstract::The human neuroblastoma cell line CHP100 provides a useful model system in which to study the molecular mechanisms of transcriptional regulation of the low-affinity nerve growth factor receptor (NGFR) gene during neuronal development. Basic fibroblast growth factor (bFGF) induced morphological changes in CHP100 cells,...
journal_title:Molecular and cellular biology
pub_type: 杂志文章
doi:10.1128/mcb.12.5.2193
更新日期:1992-05-01 00:00:00
abstract::In order to create an extended map of chromatin features within a mammalian multigene locus, we have determined the extent of nuclease sensitivity and the pattern of histone modifications associated with the mouse beta-globin genes in adult erythroid tissue. We show that the nuclease-sensitive domain encompasses the b...
journal_title:Molecular and cellular biology
pub_type: 杂志文章
doi:10.1128/mcb.23.15.5234-5244.2003
更新日期:2003-08-01 00:00:00
abstract::To examine the role of simian virus 40 (SV40) large T and small t antigens in tumorigenesis in animals, we generated transgenic mice which expressed either both the SV40 large T and small t antigens or the SV40 large T antigen alone under the control of the mouse mammary tumor virus long terminal repeat. The mouse mam...
journal_title:Molecular and cellular biology
pub_type: 杂志文章
doi:10.1128/mcb.8.8.3382
更新日期:1988-08-01 00:00:00
abstract::R-loops have been described in vivo at the immunoglobulin class switch sequences and at prokaryotic and mitochondrial origins of replication. However, the biochemical mechanism and determinants of R-loop formation are unclear. We find that R-loop formation is nearly eliminated when RNase T(1) is added during transcrip...
journal_title:Molecular and cellular biology
pub_type: 杂志文章
doi:10.1128/MCB.01251-07
更新日期:2008-01-01 00:00:00
abstract::Members of the cytokine receptor superfamily have structurally similar extracellular ligand-binding domains yet diverse cytoplasmic regions lacking any obvious catalytic domains. Many of these receptors form ligand-induced oligomers which are likely to participate in transmembrane signaling. A constitutively active (f...
journal_title:Molecular and cellular biology
pub_type: 杂志文章
doi:10.1128/mcb.14.6.3535
更新日期:1994-06-01 00:00:00
abstract::2-Aminopurine (2-AP) inhibits specific kinases that phosphorylate the alpha subunit of eukaryotic translation initiation factor 2. One of these, PKR, is also involved in signal transduction. We show here that 2-AP selectively inhibits expression of tumor necrosis factor alpha (TNF-alpha) mRNA in primary human lymphoid...
journal_title:Molecular and cellular biology
pub_type: 杂志文章
doi:10.1128/mcb.16.6.2814
更新日期:1996-06-01 00:00:00
abstract::The mouse urokinase-type plasminogen activator (uPA) gene was used as a model macrophage colony-stimulating factor 1 (CSF-1)-inducible gene to investigate CSF-1 signalling pathways. Nuclear run-on analysis showed that induction of uPA mRNA by CSF-1 and phorbol myristate acetate (PMA) was at the transcriptional level i...
journal_title:Molecular and cellular biology
pub_type: 杂志文章
doi:10.1128/mcb.15.6.3430
更新日期:1995-06-01 00:00:00
abstract::TRF1 is a component of the shelterin complex at mammalian telomeres; however, a role for TRF1 in telomere biology in the context of the organism is unclear. In this study, we generated mice with transgenic TRF1 expression targeted to epithelial tissues (K5TRF1 mice). K5TRF1 mice have shorter telomeres in the epidermis...
journal_title:Molecular and cellular biology
pub_type: 杂志文章
doi:10.1128/MCB.01339-08
更新日期:2009-03-01 00:00:00
abstract::DNA sequencing and blot hybridization analyses have been used to study the structure of a mouse VL30 gene and the molecular nature of VL30-related RNA which is induced upon the stimulation of cultured AKR mouse embryo cells with defined peptide growth factors. An integrated mouse VL30 gene was found to contain identic...
journal_title:Molecular and cellular biology
pub_type: 杂志文章
doi:10.1128/mcb.3.12.2221
更新日期:1983-12-01 00:00:00
abstract::SEC62 is required for the import of secretory protein precursors into the endoplasmic reticulum (ER) of Saccharomyces cerevisiae. The DNA sequence of SEC62 predicts a 32-kDa polypeptide with two potential membrane-spanning segments. Two antisera directed against different portions of the SEC62 coding region specifical...
journal_title:Molecular and cellular biology
pub_type: 杂志文章
doi:10.1128/mcb.10.11.6024
更新日期:1990-11-01 00:00:00
abstract::To understand the function of SPT13, a gene encoding a trans-acting factor involved in regulation of Ty-mediated gene expression, we have cloned and sequenced the gene. Our analysis revealed that SPT13 is the same gene as GAL11, a gene in which mutations cause reduced expression of some GAL4-regulated genes. Further a...
journal_title:Molecular and cellular biology
pub_type: 杂志文章
doi:10.1128/mcb.9.12.5602
更新日期:1989-12-01 00:00:00
abstract::The short form (S1b) of the prolactin receptor (PRLR) silences prolactin-induced activation of gene transcription by the PRLR long form (LF). The functional and structural contributions of two intramolecular disulfide (S-S) bonds within the extracellular subdomain 1 (D1) of S1b to its inhibitory function on the LF wer...
journal_title:Molecular and cellular biology
pub_type: 杂志文章
doi:10.1128/MCB.01716-08
更新日期:2009-05-01 00:00:00
abstract::Nuclear respiratory-defective mutants of Saccharomyces cerevisiae have been screened for lesions in the mitochondrial alpha-ketoglutarate dehydrogenase complex. Strains assigned to complementation group G70 were ascertained to be deficient in enzyme activity due to mutations in the KGD1 gene coding for the alpha-ketog...
journal_title:Molecular and cellular biology
pub_type: 杂志文章
doi:10.1128/mcb.9.6.2695
更新日期:1989-06-01 00:00:00