Abstract:
:KIF14 is a microtubule motor protein whose elevated expression is associated with poor-prognosis breast cancer. Here we demonstrate KIF14 accumulation in mitotic cells, where it associated with developing spindle poles and spindle microtubules. Cells at later stages of mitosis were characterized by the concentration of KIF14 at the midbody. Time-lapse microscopy revealed that strong RNA interference (RNAi)-mediated silencing of KIF14 induced cytokinesis failure, causing several rounds of endoreduplication and resulting in multinucleated cells. Additionally, less efficacious KIF14-specific short interfering RNAs (siRNAs) induced multiple phenotypes, all of which resulted in acute apoptosis. Our data demonstrate the ability of siRNA-mediated silencing to generate epiallelic hypomorphs associated with KIF14 depletion. Furthermore, the link we observed between siRNA efficacy and phenotypic outcome indicates that distinct stages during cell cycle progression are disrupted by the differential modulation of KIF14 expression.
journal_name
Mol Cell Bioljournal_title
Molecular and cellular biologyauthors
Carleton M,Mao M,Biery M,Warrener P,Kim S,Buser C,Marshall CG,Fernandes C,Annis J,Linsley PSdoi
10.1128/MCB.26.10.3853-3863.2006subject
Has Abstractpub_date
2006-05-01 00:00:00pages
3853-63issue
10eissn
0270-7306issn
1098-5549pii
26/10/3853journal_volume
26pub_type
杂志文章abstract::Fragments of 5'-flanking and noncoding exon I sequences of the human gastrin gene were analyzed in transient expression assays after transfection of a variety of cell lines with the pSVCAT vector system. In the presence of the simian virus 40 (SV40) enhancer, the gastrin gene fragment from nucleotides -250 to +57, rel...
journal_title:Molecular and cellular biology
pub_type: 杂志文章
doi:10.1128/mcb.7.12.4329
更新日期:1987-12-01 00:00:00
abstract::Centrins in vertebrates have traditionally been associated with microtubule-nucleating centers such as the centrosome. Unexpectedly, we found centrin 2 to associate biochemically with nucleoporins, including the Xenopus laevis Nup107-160 complex, a critical subunit of the vertebrate nuclear pore in interphase and of t...
journal_title:Molecular and cellular biology
pub_type: 杂志文章
doi:10.1128/MCB.01697-07
更新日期:2008-03-01 00:00:00
abstract::The GCN4 gene encodes a positive effector of amino acid biosynthetic genes in Saccharomyces cerevisiae. Genetic analysis has suggested that GCN4 is regulated by a hierarchy of interacting positive and negative effectors in response to amino acid starvation. Results presented here for a GCN4-lacZ gene fusion support th...
journal_title:Molecular and cellular biology
pub_type: 杂志文章
doi:10.1128/mcb.5.9.2349
更新日期:1985-09-01 00:00:00
abstract::Pref-1/Dlk1 is made as an epidermal growth factor (EGF) repeat-containing transmembrane protein but is cleaved by tumor necrosis factor alpha converting enzyme (TACE) to generate a biologically active soluble form. Soluble Pref-1 inhibits adipocyte differentiation through the activation of extracellular signal-regulat...
journal_title:Molecular and cellular biology
pub_type: 杂志文章
doi:10.1128/MCB.00057-10
更新日期:2010-07-01 00:00:00
abstract::Endonuclease decay of nonsense-containing beta-globin mRNA in erythroid cells generates 5'-truncated products that were reported previously to have a cap or caplike structure. We confirmed that this 5' modification is indistinguishable from the cap on full-length mRNA, and Western blotting, immunoprecipitation, and ac...
journal_title:Molecular and cellular biology
pub_type: 杂志文章
doi:10.1128/MCB.01325-08
更新日期:2009-04-01 00:00:00
abstract::Misregulation of NF-kappaB signaling leads to infectious, inflammatory, or autoimmune disorders. IkappaB kinase beta (IKKbeta) is an essential activator of NF-kappaB and is known to phosphorylate the NF-kappaB inhibitor, IkappaBalpha, allowing it to undergo ubiquitin-mediated proteasomal degradation. However, beyond I...
journal_title:Molecular and cellular biology
pub_type: 杂志文章
doi:10.1128/MCB.01101-07
更新日期:2007-11-01 00:00:00
abstract::S-Tubercidinylhomocysteine (STH) is a structural analog of S-adenosylhomocysteine and a potent inhibitor of S-adenosylmethionine-dependent methyltransferase reactions. We investigated the effects of STH on HeLa cell mRNA metabolism. Dual labeling studies reveal that STH dramatically inhibits the methylation of HeLa mR...
journal_title:Molecular and cellular biology
pub_type: 杂志文章
doi:10.1128/mcb.4.3.538
更新日期:1984-03-01 00:00:00
abstract::Transcription activation of alpha-specific genes in Saccharomyces cerevisiae is regulated by two proteins, MCM1 and alpha 1, which bind to DNA sequences, called P'Q elements, found upstream of alpha-specific genes. Neither MCM1 nor alpha 1 alone binds efficiently to P'Q elements. Together, however, they bind cooperati...
journal_title:Molecular and cellular biology
pub_type: 杂志文章
doi:10.1128/mcb.13.11.6866
更新日期:1993-11-01 00:00:00
abstract::The minimal muscle-specific dystrophin promoter contains the consensus sequence CC(A/T)6GG, or the CArG element, which can be found in serum-inducible or muscle-specific promoters. The serum response factor (SRF), which mediates the transcriptional activation of the c-fos gene in response to serum stimulation, can bin...
journal_title:Molecular and cellular biology
pub_type: 杂志文章
doi:10.1128/mcb.17.3.1731
更新日期:1997-03-01 00:00:00
abstract::A critical event in signaling in immune cells is the interaction of Syk or ZAP-70 protein tyrosine kinases with multisubunit receptors that contain an approximately 18-amino-acid domain called the immunoreceptor tyrosine-based activation motif (ITAM). Tyrosine-phosphorylated Syk from activated cells was in a conformat...
journal_title:Molecular and cellular biology
pub_type: 杂志文章
doi:10.1128/mcb.16.4.1471
更新日期:1996-04-01 00:00:00
abstract::Tumor progression locus 2 (TPL-2) functions as a MEK-1/2 kinase, which is essential for Toll-like receptor 4 (TLR4) activation of extracellular signal-regulated kinase 1 and 2 (ERK-1/2) mitogen-activated protein (MAP) kinases in lipopolysaccharide (LPS)-stimulated macrophages and for inducing the production of the pro...
journal_title:Molecular and cellular biology
pub_type: 杂志文章
doi:10.1128/MCB.01065-12
更新日期:2012-11-01 00:00:00
abstract::Sequencing cDNA and genomic DNA from the ovarian tumor gene revealed a gene with seven introns spanning 4.5 kilobases. The proline-rich, hydrophilic otu protein is novel. An antibody prepared to a beta-gal-otu fusion protein recognized a 110-kilodalton ovarian protein which was altered in the ovaries of otu gene mutan...
journal_title:Molecular and cellular biology
pub_type: 杂志文章
doi:10.1128/mcb.9.12.5726
更新日期:1989-12-01 00:00:00
abstract::The Polycomb group (PcG) of proteins represses homeotic gene expression through the assembly of multiprotein complexes on key regulatory elements. The mechanisms mediating complex assembly have remained enigmatic since most PcG proteins fail to bind DNA. We now demonstrate that the human PcG protein dinG interacts wit...
journal_title:Molecular and cellular biology
pub_type: 杂志文章
doi:10.1128/mcb.22.6.1936-1946.2002
更新日期:2002-03-01 00:00:00
abstract::Interleukin 1 (IL-1) induces the synthesis of kappa immunoglobulin light chains and the expression of surface immunoglobulin in the murine pre-B-cell line 70Z/3 (J. G. Giri, P. W. Kincade, and S. B. Mizel, J. Immunol. 132:223-228, 1984). In the present study, we found that these effects of IL-1 are mimicked by cyclic ...
journal_title:Molecular and cellular biology
pub_type: 杂志文章
doi:10.1128/mcb.9.3.959
更新日期:1989-03-01 00:00:00
abstract::Phosphorylation of eukaryotic initiation factor 2 alpha (eIF-2 alpha) is typically associated with stress responses and causes a reduction in protein synthesis. However, we found high phosphorylated eIF-2 alpha (eIF-2 alpha[P]) levels in nonstressed pancreata of mice. Administration of glucose stimulated a rapid depho...
journal_title:Molecular and cellular biology
pub_type: 杂志文章
doi:10.1128/mcb.22.11.3864-3874.2002
更新日期:2002-06-01 00:00:00
abstract::Mammalian B-cell lymphoid malignancies frequently display aberrant translocations involving the c-myc proto-oncogene and one of the immunoglobulin loci. We have observed and characterized such a translocation in the immunoglobulin E-producing rat immunocytoma IR162 by using recombinant DNA technology. We show here for...
journal_title:Molecular and cellular biology
pub_type: 杂志文章
doi:10.1128/mcb.7.7.2614
更新日期:1987-07-01 00:00:00
abstract::Ras GTPases were long thought to function exclusively from the plasma membrane (PM). However, a current model suggests that Ras proteins can compartmentalize to regulate different functions, and an oncogenic H-Ras mutant that is restricted to the endomembrane can still transform cells. In this study, we demonstrated t...
journal_title:Molecular and cellular biology
pub_type: 杂志文章
doi:10.1128/MCB.00137-10
更新日期:2011-03-01 00:00:00
abstract::Wnt/β-catenin signaling is a critical regulator of skeletal physiology. However, previous studies have mainly focused on its roles in osteoblasts, while its specific function in osteoclasts is unknown. This is a clinically important question because neutralizing antibodies against Wnt antagonists are promising new dru...
journal_title:Molecular and cellular biology
pub_type: 杂志文章
doi:10.1128/MCB.05980-11
更新日期:2011-12-01 00:00:00
abstract::We have isolated a yeast conditional mutant which rapidly ceases synthesis of mRNA when subjected to the nonpermissive temperature. This mutant (rpb1-1) was constructed by replacing the wild-type chromosomal copy of the gene encoding the largest subunit of RNA polymerase II with one mutagenized in vitro. The rapid ces...
journal_title:Molecular and cellular biology
pub_type: 杂志文章
doi:10.1128/mcb.7.5.1602
更新日期:1987-05-01 00:00:00
abstract::The 12p13 ETV6 (TEL) gene is frequently targeted by chromosomal translocations in human malignancies, resulting in the formation of oncogenic ETV6 gene fusions. Many of the known partner genes encode protein tyrosine kinases (PTKs), generating fusion proteins that function as chimeric PTKs. ETV6-NTRK3 (EN), comprised ...
journal_title:Molecular and cellular biology
pub_type: 杂志文章
doi:10.1128/MCB.24.11.4636-4650.2004
更新日期:2004-06-01 00:00:00
abstract::Neuronal differentiation is tightly regulated by a variety of factors. In a search for neuron-specific genes, we identified a highly conserved novel zinc finger protein, ZNF536. We observed that ZNF536 is most abundant in the brain and, in particular, is expressed in the developing central nervous system and dorsal ro...
journal_title:Molecular and cellular biology
pub_type: 杂志文章
doi:10.1128/MCB.00362-09
更新日期:2009-07-01 00:00:00
abstract::The cellular transcription factor E2F appears to be a target for the regulatory action of the retinoblastoma tumor suppressor gene product. The recent isolation of the E2F1 cDNA clone, which encodes a polypeptide with properties characteristic of E2F, has now allowed a more detailed analysis of the regulation of E2F f...
journal_title:Molecular and cellular biology
pub_type: 杂志文章
doi:10.1128/mcb.13.10.6314
更新日期:1993-10-01 00:00:00
abstract::Intracisternal A-particle (IAP) expression in mouse cells has been correlated with hypomethylation of HhaI and HpaII sites in proviral long terminal repeats (LTRs). In a previous study, in vitro methylation of three HhaI sites in the U3 region of the LTR from the cloned genomic IAP element, MIA14, was shown to inhibit...
journal_title:Molecular and cellular biology
pub_type: 杂志文章
doi:10.1128/mcb.11.1.117
更新日期:1991-01-01 00:00:00
abstract::We previously observed that nitric oxide (NO) exposure increases the stability of mRNAs encoding heme oxygenase 1 (HO-1) and TIEG-1 in human and mouse fibroblasts. Here, we have used microarrays to look broadly for changes in mRNA stability in response to NO treatment. Using human IMR-90 and mouse NIH 3T3 fibroblasts ...
journal_title:Molecular and cellular biology
pub_type: 杂志文章
doi:10.1128/MCB.01495-08
更新日期:2009-05-01 00:00:00
abstract::The E2F transcription factors are key downstream targets of the retinoblastoma protein (pRB) tumor suppressor. We have previously shown that E2F3 plays a critical role in mediating the mitogen-induced activation of E2F-responsive genes and contributes to both the inappropriate proliferation and the p53-dependent apopt...
journal_title:Molecular and cellular biology
pub_type: 杂志文章
doi:10.1128/mcb.23.18.6542-6552.2003
更新日期:2003-09-01 00:00:00
abstract::The retinoblastoma tumor suppressor protein (RB) is a potent inhibitor of cell proliferation. RB is expressed throughout the cell cycle, but its antiproliferative activity is neutralized by phosphorylation during the G(1)/S transition. RB plays an essential role in the G(1) arrest induced by a variety of growth inhibi...
journal_title:Molecular and cellular biology
pub_type: 杂志文章
doi:10.1128/mcb.20.20.7751-7763.2000
更新日期:2000-10-01 00:00:00
abstract::The molecular distinctions between mortality stages 1 (M1; senescence) and 2 (M2; crisis) of human replicative aging are ill defined. We demonstrate a qualitative difference between telomeric end associations at M1 and the end fusions that produce dicentric chromosomes and breakage-fusion cycles. Knockdown of ligase I...
journal_title:Molecular and cellular biology
pub_type: 杂志文章
doi:10.1128/MCB.01569-08
更新日期:2009-05-01 00:00:00
abstract::To investigate the role of insulin receptor substrate 1 (IRS-1) and IRS-2, the two ubiquitously expressed IRS proteins, in adipocyte differentiation, we established embryonic fibroblast cells with four different genotypes, i.e., wild-type, IRS-1 deficient (IRS-1(-/-)), IRS-2 deficient (IRS-2(-/-)), and IRS-1 IRS-2 dou...
journal_title:Molecular and cellular biology
pub_type: 杂志文章
doi:10.1128/MCB.21.7.2521-2532.2001
更新日期:2001-04-01 00:00:00
abstract::We have characterized the mechanism by which coactivator p300 facilitates transcriptional activation mediated by the heterodimer of thyroid hormone (T3) receptor and 9-cis retinoid acid receptor (TR-RXR) in the context of chromatin. We demonstrate that, while p300 can enhance the transcriptional activation mediated by...
journal_title:Molecular and cellular biology
pub_type: 杂志文章
doi:10.1128/mcb.20.6.2031-2042.2000
更新日期:2000-03-01 00:00:00
abstract::The NF-kappa B/Rel family of transcription factors participates in the control of a wide array of genes, including genes involved in embryonic development and regulation of immune, inflammation, and stress responses. In most cells, inhibitory I kappa B proteins sequester NF-kappa B/Rel in the cytoplasm. Cellular stimu...
journal_title:Molecular and cellular biology
pub_type: 杂志文章
doi:10.1128/mcb.23.4.1418-1427.2003
更新日期:2003-02-01 00:00:00