abstract：:The Drosophila melanogaster Myb-MuvB/dREAM complex (MMB/dREAM) participates in both the activation and repression of developmentally regulated genes and origins of DNA replication. Mutants in MMB subunits exhibit diverse phenotypes, including lethality, eye defects, reduced fecundity, and sterility. Here, we used P-el...

journal_title：Molecular and cellular biology

authors： Lewis PW,Sahoo D,Geng C,Bell M,Lipsick JS,Botchan MR

更新日期：2012-08-01 00:00:00

abstract：:The CACCC-box binding protein erythroid Krüppel-like factor (EKLF/KLF1) is a master regulator that directs the expression of many important erythroid genes. We have previously shown that EKLF drives transcription of the gene for a second KLF, basic Krüppel-like factor, or KLF3. We have now tested the in vivo role of K...

journal_title：Molecular and cellular biology

authors： Funnell AP,Norton LJ,Mak KS,Burdach J,Artuz CM,Twine NA,Wilkins MR,Power CA,Hung TT,Perdomo J,Koh P,Bell-Anderson KS,Orkin SH,Fraser ST,Perkins AC,Pearson RC,Crossley M

更新日期：2012-08-01 00:00:00

abstract：:The Wnt/β-catenin pathway promotes proliferation of neural progenitor cells (NPCs) at early stages and induces neuronal differentiation from NPCs at late stages, but the molecular mechanisms that control this stage-specific response are unclear. Pin1 is a prolyl isomerase that regulates cell signaling uniquely by cont...

journal_title：Molecular and cellular biology

authors： Nakamura K,Kosugi I,Lee DY,Hafner A,Sinclair DA,Ryo A,Lu KP

更新日期：2012-08-01 00:00:00

abstract：:Cks1 is an activator of the SCF(Skp2) ubiquitin ligase complex that targets the cell cycle inhibitor p27(Kip1) for degradation. The loss of Cks1 results in p27(Kip1) accumulation and decreased proliferation and inhibits tumorigenesis. We identify here a function of Cks1 in mammalian cell cycle regulation that is indep...

journal_title：Molecular and cellular biology

authors： Hoellein A,Graf S,Bassermann F,Schoeffmann S,Platz U,Hölzlwimmer G,Kröger M,Peschel C,Oostendorp R,Quintanilla-Fend L,Keller U

更新日期：2012-07-01 00:00:00

abstract：:The connections between various nuclear processes and specific histone posttranslational modifications are dependent to a large extent on the acquisition of those modifications after histone synthesis. The reestablishment of histone posttranslational modifications after S phase is especially critical for H3K9 and H3K2...

journal_title：Molecular and cellular biology

authors： Zee BM,Britton LM,Wolle D,Haberman DM,Garcia BA

更新日期：2012-07-01 00:00:00

abstract：:SUMO conjugation has emerged as a dynamic process in regulating protein function. Here we identify estrogen receptor β (ERβ) to be a new target of SUMO-1. ERβ SUMO-1 modification occurs on a unique nonconsensus sumoylation motif which becomes fully competent upon phosphorylation of its contained serine residue, which ...

journal_title：Molecular and cellular biology

authors： Picard N,Caron V,Bilodeau S,Sanchez M,Mascle X,Aubry M,Tremblay A

更新日期：2012-07-01 00:00:00

abstract：:Mutations in the gene encoding methyl-CpG-binding protein 2 (MeCP2) lead to disrupted neuronal function and can cause the neurodevelopmental disorder Rett syndrome. MeCP2 is a transcriptional regulator that binds to methylated DNA and is most abundant in neuronal nuclei. The mechanisms by which MeCP2 regulates gene ex...

journal_title：Molecular and cellular biology

authors： Gonzales ML,Adams S,Dunaway KW,LaSalle JM

更新日期：2012-07-01 00:00:00

abstract：:E2F and RB proteins regulate the expression of genes involved in cell cycle progression, apoptosis, differentiation, and development. Recent studies indicate that they function as part of an evolutionarily conserved multiprotein complex termed dREAM/DREAM/LINC. Here we characterize the role of the Drosophila complex, ...

journal_title：Molecular and cellular biology

authors： Lee H,Ragusano L,Martinez A,Gill J,Dimova DK

更新日期：2012-06-01 00:00:00

abstract：:Posttranscriptional and posttranslational modification of macromolecules is known to fine-tune their functions. Trm112 is unique, acting as an activator of both tRNA and protein methyltransferases. Here we report that in Saccharomyces cerevisiae, Trm112 is required for efficient ribosome synthesis and progression thro...

journal_title：Molecular and cellular biology

authors： Figaro S,Wacheul L,Schillewaert S,Graille M,Huvelle E,Mongeard R,Zorbas C,Lafontaine DL,Heurgué-Hamard V

更新日期：2012-06-01 00:00:00

abstract：:Distal intraexon (iE) regulatory elements in 4.1R pre-mRNA govern 3' splice site choice at exon 2 (E2) via nested splicing events, ultimately modulating expression of N-terminal isoforms of cytoskeletal 4.1R protein. Here we explored intrasplicing in other normal and disease gene contexts and found conservation of int...

journal_title：Molecular and cellular biology

authors： Parra MK,Gallagher TL,Amacher SL,Mohandas N,Conboy JG

更新日期：2012-06-01 00:00:00

abstract：:Throughout life, intestinal Lgr5+ stem cells give rise to proliferating transient amplifying cells in crypts, which subsequently differentiate into one of the five main cell types and migrate along the crypt-villus axis. These dynamic processes are coordinated by a relatively small number of evolutionarily conserved s...

journal_title：Molecular and cellular biology

authors： van Es JH,Haegebarth A,Kujala P,Itzkovitz S,Koo BK,Boj SF,Korving J,van den Born M,van Oudenaarden A,Robine S,Clevers H

更新日期：2012-05-01 00:00:00

abstract：:Neural retina leucine zipper (Nrl), a key basic motif leucine zipper (bZIP) transcription factor, modulates rod photoreceptor differentiation by activating rod-specific target genes. In searching for factors that might couple with Nrl to modulate its transcriptional activity through posttranslational modification, we ...

journal_title：Molecular and cellular biology

authors： Kim JW,Jang SM,Kim CH,An JH,Choi KH

更新日期：2012-05-01 00:00:00

abstract：:The Saccharomyces cerevisiae Nrd1-Nab3 pathway directs the termination and processing of short RNA polymerase II transcripts. Despite the potential for Nrd1-Nab3 to affect the transcription of both coding and noncoding RNAs, little is known about how the Nrd1-Nab3 pathway interacts with other pathways in the cell. Her...

journal_title：Molecular and cellular biology

authors： Darby MM,Serebreni L,Pan X,Boeke JD,Corden JL

更新日期：2012-05-01 00:00:00

abstract：:Tumor suppressor genes regulate the antiviral host defense through molecular mechanisms that are not yet well explored. Here, we show that the tumor suppressor retinoblastoma (Rb) protein positively regulates Toll-like receptor 3 (TLR3) expression, the sensing receptor for viral double-stranded RNA and poly(I · C). TL...

journal_title：Molecular and cellular biology

authors： Taura M,Suico MA,Koyama K,Komatsu K,Miyakita R,Matsumoto C,Kudo E,Kariya R,Goto H,Kitajima S,Takahashi C,Shuto T,Nakao M,Okada S,Kai H

更新日期：2012-04-01 00:00:00

abstract：:Our recent studies implicated key and distinct roles for the highly related RalA and RalB small GTPases (82% sequence identity) in pancreatic ductal adenocarcinoma (PDAC) tumorigenesis and invasive and metastatic growth, respectively. How RalB may promote PDAC invasion and metastasis has not been determined. In light ...

journal_title：Molecular and cellular biology

authors： Neel NF,Rossman KL,Martin TD,Hayes TK,Yeh JJ,Der CJ

更新日期：2012-04-01 00:00:00

abstract：:The activity of the tumor suppressor p53 is tightly controlled by its main negative regulator, Mdm2, which inhibits p53's transcriptional activity and targets it for degradation via the proteasome pathway. The closely related Mdm2 homolog, MdmX, is also considered to be a general inhibitor of transactivation by p53, t...

journal_title：Molecular and cellular biology

authors： Biderman L,Poyurovsky MV,Assia Y,Manley JL,Prives C

更新日期：2012-04-01 00:00:00

abstract：:Polycomb repressive complexes (PRCs) are important chromatin regulators of embryonic stem (ES) cell function. RYBP binds Polycomb H2A monoubiquitin ligases Ring1A and Ring1B and has been suggested to assist PRC localization to their targets. Moreover, constitutive inactivation of RYBP precludes ES cell formation. Usin...

journal_title：Molecular and cellular biology

authors： Hisada K,Sánchez C,Endo TA,Endoh M,Román-Trufero M,Sharif J,Koseki H,Vidal M

更新日期：2012-03-01 00:00:00

abstract：:Previously we demonstrated that the heat shock transcription factor Hsf1 is indispensable for transformation of mammary epithelial cells by the Her2 oncogene. Since Hsf1 affects oncogene-induced senescence (OIS), these findings suggest that Hsf1 affects tumor initiation when OIS plays a role. Indeed, here we report th...

journal_title：Molecular and cellular biology

authors： Gabai VL,Meng L,Kim G,Mills TA,Benjamin IJ,Sherman MY

更新日期：2012-03-01 00:00:00

abstract：:The Integrator Complex is a group of proteins responsible for the endonucleolytic cleavage of primary small nuclear RNA (snRNA) transcripts within the nucleus. Integrator subunits 9 and 11 (IntS9/11) are thought to contain the catalytic activity based on their high sequence similarity to CPSF100 and CPSF73, which have...

journal_title：Molecular and cellular biology

authors： Albrecht TR,Wagner EJ

更新日期：2012-03-01 00:00:00

abstract：:Podocytes are highly differentiated and polarized epithelial cells located on the visceral side of the glomerulus. They form an indispensable component of the glomerular filter, the slit diaphragm, formed by several transmembrane proteins and adaptor molecules. Disruption of the slit diaphragm can lead to massive prot...

journal_title：Molecular and cellular biology

authors： Tossidou I,Niedenthal R,Klaus M,Teng B,Worthmann K,King BL,Peterson KJ,Haller H,Schiffer M

更新日期：2012-03-01 00:00:00

abstract：:Much of the regulatory diversity in eukaryotic transcription is provided by coregulators, which are recruited by DNA-binding factors to propagate signaling to basal machinery or chromatin. p160 family members, including the glucocorticoid receptor (GR)-interacting protein 1 (GRIP1), function as coactivators for GR, a ...

journal_title：Molecular and cellular biology

authors： Dobrovolna J,Chinenov Y,Kennedy MA,Liu B,Rogatsky I

更新日期：2012-02-01 00:00:00

abstract：:Mitochondrial respiratory complexes of the electron transport chain (CI, CIII, and CIV) can be assembled into larger structures forming supercomplexes. We analyzed the assembly/stability of respiratory complexes in mouse lung fibroblasts lacking the Rieske iron-sulfur protein (RISP knockout [KO]cells), one of the cata...

journal_title：Molecular and cellular biology

authors： Diaz F,Enríquez JA,Moraes CT

更新日期：2012-01-01 00:00:00

abstract：:Spinal muscular atrophy (SMA) is an inherited motor neuron disease caused by homozygous loss of the Survival Motor Neuron 1 (SMN1) gene. In the absence of SMN1, inefficient inclusion of exon 7 in transcripts from the nearly identical SMN2 gene results in ubiquitous SMN decrease but selective motor neuron degeneration....

journal_title：Molecular and cellular biology

authors： Ruggiu M,McGovern VL,Lotti F,Saieva L,Li DK,Kariya S,Monani UR,Burghes AH,Pellizzoni L

更新日期：2012-01-01 00:00:00

abstract：:Maintaining optimal bone integrity, mass, and strength throughout adult life requires ongoing bone remodeling, which involves coordinated activity between actions of bone-resorbing osteoclasts and bone forming-osteoblasts. Osteoporosis is a disorder of remodeling in which bone resorption outstrips deposition, leading ...

journal_title：Molecular and cellular biology

authors： Mukherjee A,Rotwein P

更新日期：2012-01-01 00:00:00

abstract：:Up to 70% of human genes are associated with regions of nonmethylated DNA called CpG islands (S. Saxonov, P. Berg, and D. L. Brutlag, Proc. Natl. Acad. Sci. U. S. A. 103:1412-1417, 2006). Usually associated with the 5' end of genes, CpG islands are thought to impact gene expression. We previously demonstrated that the...

journal_title：Molecular and cellular biology

authors： Zhou JC,Blackledge NP,Farcas AM,Klose RJ

更新日期：2012-01-01 00:00:00

abstract：:Protein 4.1G is a membrane skeletal protein found in specific subcellular structures in myelinated Schwann cells and seminiferous tubules. Here, we show that in the mouse sciatic nerve, protein 4.1G colocalized at Schmidt-Lanterman incisures (SLI) and the paranodes with a member of the membrane-associated guanylate ki...

journal_title：Molecular and cellular biology

authors： Terada N,Saitoh Y,Ohno N,Komada M,Saitoh S,Peles E,Ohno S

更新日期：2012-01-01 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

authors： Wei W,Zeve D,Suh JM,Wang X,Du Y,Zerwekh JE,Dechow PC,Graff JM,Wan Y

更新日期：2011-12-01 00:00:00

abstract：:Glucocorticoids are stress hormones that maintain homeostasis through gene regulation mediated by nuclear receptors. We have discovered that other cellular stressors are integrated with glucocorticoid signaling through a new hormone-independent phosphorylation site, Ser134, on the human glucocorticoid receptor (GR). S...

journal_title：Molecular and cellular biology

authors： Galliher-Beckley AJ,Williams JG,Cidlowski JA

更新日期：2011-12-01 00:00:00

abstract：:The transcriptional coactivator Cbp plays an important role in a wide range of cellular processes, including proliferation, differentiation, and apoptosis. Although studies have shown its requirement for hematopoietic stem cell (HSC) development, its role in adult HSC maintenance, as well as the cellular and molecular...

journal_title：Molecular and cellular biology

authors： Chan WI,Hannah RL,Dawson MA,Pridans C,Foster D,Joshi A,Göttgens B,Van Deursen JM,Huntly BJ

更新日期：2011-12-01 00:00:00

abstract：:Expression of vascular endothelial growth factor (VEGF) increases in cancer cells during hypoxia. Herein, we report that the MDM2 oncoprotein plays a role in hypoxia-mediated VEGF upregulation. In studying the characteristics of MDM2 and VEGF expression in neuroblastoma cells, we found that hypoxia induced significant...

journal_title：Molecular and cellular biology

authors： Zhou S,Gu L,He J,Zhang H,Zhou M

更新日期：2011-12-01 00:00:00

abstract：:Osteoclasts are bone-resorbing cells essential for skeletal development, homeostasis, and regeneration. They derive from hematopoietic progenitors in the monocyte/macrophage lineage and differentiate in response to RANKL. However, the precise nature of osteoclast progenitors is a longstanding and important question. U...

journal_title：Molecular and cellular biology

authors： Wei W,Zeve D,Wang X,Du Y,Tang W,Dechow PC,Graff JM,Wan Y

更新日期：2011-12-01 00:00:00

abstract：:Nearly half of human cancers harbor p53 mutations, which can promote cancerous growth, metastasis, and resistance to therapy. The gain of function of mutant p53 is partly mediated by its ability to form a complex with NF-Y or p63/p73. Here, we demonstrate that TopBP1 mediates these activities in cancer, and we provide...

journal_title：Molecular and cellular biology

authors： Liu K,Ling S,Lin WC

更新日期：2011-11-01 00:00:00

abstract：:MAP2K4 encodes a dual-specificity kinase (mitogen-activated protein kinase kinase 4, or MKK4) that is mutated in a variety of human malignancies, but the biochemical properties of the mutant kinases and their roles in tumorigenesis have not been fully elucidated. Here we showed that 8 out of 11 cancer-associated MAP2K...

journal_title：Molecular and cellular biology

authors： Ahn YH,Yang Y,Gibbons DL,Creighton CJ,Yang F,Wistuba II,Lin W,Thilaganathan N,Alvarez CA,Roybal J,Goldsmith EJ,Tournier C,Kurie JM

更新日期：2011-11-01 00:00:00

abstract：:The RNA-binding protein (RBP) nucleolin promotes the expression of several proliferative proteins. Nucleolin levels are high in cancer cells, but the mechanisms that control nucleolin expression are unknown. Here, we show that nucleolin abundance is controlled posttranscriptionally via factors that associate with its ...

journal_title：Molecular and cellular biology

authors： Tominaga K,Srikantan S,Lee EK,Subaran SS,Martindale JL,Abdelmohsen K,Gorospe M

更新日期：2011-10-01 00:00:00

abstract：:PC12 cells exhibit precise temporal control of growth factor signaling in which stimulation with epidermal growth factor (EGF) leads to transient extracellular signal-regulated kinase (ERK) activity and cell proliferation, whereas nerve growth factor (NGF) stimulation leads to sustained ERK activity and differentiatio...

journal_title：Molecular and cellular biology

authors： Herbst KJ,Allen MD,Zhang J

更新日期：2011-10-01 00:00:00

abstract：:To interrogate endogenous p21(WAF1/CIP1) (p21) promoter activity under basal conditions and in response to various forms of stress, knock-in imaging reporter mice in which expression of firefly luciferase (FLuc) was placed under the control of the endogenous p21 promoter within the Cdkn1a gene locus were generated. Bi...

journal_title：Molecular and cellular biology

authors： Tinkum KL,Marpegan L,White LS,Sun J,Herzog ED,Piwnica-Worms D,Piwnica-Worms H

更新日期：2011-09-01 00:00:00

abstract：:The stem-loop in the 5' untranslated region (UTR) of collagen α1(I) and α2(I) mRNAs (5'SL) is the key element regulating their stability and translation. Stabilization of collagen mRNAs is the predominant mechanism for high collagen expression in fibrosis. LARP6 binds the 5'SL of α1(I) and α2(I) mRNAs with high affini...

journal_title：Molecular and cellular biology

authors： Challa AA,Stefanovic B

更新日期：2011-09-01 00:00:00

abstract：:Mammary epithelial cells (MECs) detached from the extracellular matrix (ECM) produce deleterious reactive oxygen species (ROS) and induce autophagy to survive. The coordination of such opposing responses likely dictates whether epithelial cells survive ECM detachment or undergo anoikis. Here, we demonstrate that the e...

journal_title：Molecular and cellular biology

authors： Avivar-Valderas A,Salas E,Bobrovnikova-Marjon E,Diehl JA,Nagi C,Debnath J,Aguirre-Ghiso JA

更新日期：2011-09-01 00:00:00

abstract：:Our previous studies of Saccharomyces cerevisiae described a gene repression mechanism where the transcription of intergenic noncoding DNA (ncDNA) (SRG1) assembles nucleosomes across the promoter of the adjacent SER3 gene that interfere with the binding of transcription factors. To investigate the role of histones in ...

journal_title：Molecular and cellular biology

authors： Hainer SJ,Martens JA

更新日期：2011-09-01 00:00:00

abstract：:Cdc25A is a cell cycle-activating phosphatase, and its overexpression in breast cancers has been shown to correlate with poor prognosis. Most recent studies related to Cdc25A and tumor progression have focused on its role in regulating cell cycle progression. However, less is known about how Cdc25A modulates the metas...

journal_title：Molecular and cellular biology

authors： Feng X,Wu Z,Wu Y,Hankey W,Prior TW,Li L,Ganju RK,Shen R,Zou X

更新日期：2011-08-01 00:00:00