共查询到20条相似文献,搜索用时 15 毫秒
1.
Katharine Brown Stephanie Xie Xiaolei Qiu Mary Mohrin Jiyung Shin Yufei Liu Dan Zhang David T. Scadden Danica Chen 《Cell reports》2013,3(2):319-327
Highlights? SIRT3 is highly enriched in HSCs and suppressed in differentiated hematopoietic cells ? SIRT3 regulates HSC self-renewal under stress or at an old age ? SIRT3 regulates mitochondrial metabolic homeostasis and reduces ROS in HSCs ? SIRT3 is suppressed with age, and its upregulation rejuvenates aged HSCs 相似文献
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Philipp B. Staber Pu Zhang Min Ye Robert S. Welner César Nombela-Arrieta Christian Bach Marc Kerenyi Boris A. Bartholdy Hong Zhang Meritxell Alberich-Jordà Sanghoon Lee Henry Yang Felicia Ng Junyan Zhang Mathias Leddin Leslie E. Silberstein Gerald Hoefler Stuart H. Orkin Daniel G. Tenen 《Molecular cell》2013,49(5):934-946
Highlights? PU.1 prevents hematopoietic stem cell (HSC) exhaustion ? PU.1 is a master regulator of cell-cycle genes in HSCs ? PU.1 binding mediates chromosome looping in HSCs ? Positive autoregulation via a ?14 kb enhancer sustains PU.1 levels in HSCs 相似文献
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Wen-Mei Yu Xia Liu Jinhua Shen Olga Jovanovic Elena E. Pohl Stanton L. Gerson Toren Finkel Hal E. Broxmeyer Cheng-Kui Qu 《Cell Stem Cell》2013,12(1):62-74
Highlights? PTPMT1 depletion causes cell cycle delay and differentiation block in HSCs ? The HSC pool in PTPMT1 knockout mice is drastically (~40-fold) expanded ? Mitochondrial metabolism is altered and AMPK is highly activated in knockout HSCs ? PTPMT1 PIP substrates directly enhance fatty-acid-induced activation of UCP2 相似文献
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Highlights? Active Cdc42 forms dynamic zones at the periphery of mating S. pombe cells ? This defines a novel exploratory phase, without cell wall synthase exocytosis or growth ? Zone dynamics occur upon exposure to low- but not high-level pheromone ? Mating partner choice is compromised in absence of low-level pheromone signaling 相似文献
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Jason M. Butler Daniel J. Nolan Eva L. Vertes Barbara Varnum-Finney Hideki Kobayashi Andrea T. Hooper Marco Seandel Koji Shido Ian A. White Mariko Kobayashi Larry Witte Chad May Carrie Shawber Yuki Kimura Jan Kitajewski Zev Rosenwaks Irwin D. Bernstein Shahin Rafii 《Cell Stem Cell》2010,6(3):251-264
Highlights? Coculture with endothelial cells promotes HSC expansion and self-renewal ? Endothelial cell effect on HSCs mediated by Notch signaling ? In vivo, sinusoidal endothelial cells (SECs) express Notch ligands ? Blocking vessel remodeling impairs hematopoietic recovery after irradiation 相似文献
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Highlights? The response of Cdc25C to Cdk1 in Xenopus egg extracts is ultrasensitive ? The Hill coefficient for the response is astronomical (~11–32) ? Multisite phosphorylation accounts for some of the ultrasensitivity ? The Cdc25C and Wee1A responses account for the bistability of the mitotic trigger 相似文献
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Isabel Beerman Christoph Bock Brian S. Garrison Zachary D. Smith Hongcang Gu Alexander Meissner Derrick J. Rossi 《Cell Stem Cell》2013,12(4):413-425
Highlights? Locus-specific alterations of the DNA methylome accompany HSC aging ? Methylation changes target genes expressed downstream of HSCs to alter HSC potential ? HSC potential, DNA methylation, and replicative limits depend on divisional history ? Aging and forced proliferation of HSC results in DNA hypermethylation of PRC2 targets 相似文献
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Sun J Kawakami H Zech J Speck C Stillman B Li H 《Structure (London, England : 1993)》2012,20(3):534-544
Highlights? We have determined the cryo-EM structures of ORC, ORC-DNA, and ORC-Cdc6-DNA ? We show that ORC is arranged as Orc1:Orc4:Orc5:Orc2:Orc3, with Orc6 binding to Orc2 ? DNA and Cdc6 binding causes large conformational changes in ORC ? Origin DNA is proposed to bind to the interior surface of the crescent-shaped ORC 相似文献
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Joke G. van Bemmel Guillaume J. Filion Arantxa Rosado Wendy Talhout Marcel de Haas Tibor van Welsem Fred van Leeuwen Bas van Steensel 《Molecular cell》2013,49(4):759-771
Highlights? DamID identifies 42 previously unknown chromatin proteins ? Binding maps of new and known chromatin components yield a chromatin network model ? The network model predicts functions of most of the 42 new chromatin proteins ? The chromatin protein network is functionally compartmentalized 相似文献
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Yuval Rinkevich Ayelet Voskoboynik Amalia Rosner Claudette Rabinowitz Guy Paz Matan Oren Jacob Douek Gilad Alfassi Elizabeth Moiseeva Katherine J. Ishizuka Karla J. Palmeri Irving L. Weissman Buki Rinkevich 《Developmental cell》2013,24(1):76-88
Highlights? Identification of a niche for germline and somatic stem cells in a basal chordate ? Stem cells repeatedly migrate between aged or damaged niches into developing niches 相似文献
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Nikki Charles Tatsuya Ozawa Massimo Squatrito Anne-Marie Bleau Cameron W. Brennan Dolores Hambardzumyan Eric C. Holland 《Cell Stem Cell》2010,6(2):141-152
Highlights? Perivascular niche nitric oxide activates Notch in PDGF-induced gliomas ? Notch signaling drives tumor stem-like characteristics and reduces survival ? Loss of eNOS activity decreases tumor stem-like characteristics ? Suppressing eNOS activity prolongs survival in glioma-bearing mice 相似文献
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Justus Veerkamp Franziska Rudolph Zoltan Cseresnyes Florian Priller Cécile Otten Marc Renz Liliana Schaefer Salim Abdelilah-Seyfried 《Developmental cell》2013,24(6):660-667
Highlights? Cardiac laterality involves Nodal modulating an antimotogenic Bmp activity ? The Nodal target Hyaluronan synthase 2 unilaterally dampens Bmp signaling activity ? Nonmuscle myosin II is positively regulated by Bmp within cardiac tissue ? High levels of nonmuscle myosin II activity reduce cardiac cell motility 相似文献
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Mark R. Morgan Hellyeh Hamidi Mark D. Bass Stacey Warwood Christoph Ballestrem Martin J. Humphries 《Developmental cell》2013,24(5):472-485
Highlights? c-Src phosphorylates syndecan-4 in response to extracellular stimuli ? Syndecan-4 phosphorylation and engagement regulate Arf6 activity ? Syndecan-4-mediated Arf6 activity regulates differential integrin recycling ? Syndecan-4-mediated integrin recycling controls FA dynamics and cell migration 相似文献
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Highlights? C. elegans DAF-2 insulin-like signaling negatively regulates HSF-1 activity ? DDL-1 and DDL-2 are negative regulators of HSF-1 ? Formation of a complex containing DDL-1/2 and HSF-1 inhibits HSF-1 activity ? DAF-2 signaling promotes DHIC formation by inhibiting DDL-1 phosphorylation 相似文献
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Highlights? Hipk induces tissues overgrowth and leads to activation of Yki target genes ? Hipk is required for activity of hyperactive Yki ? Hipk kinase function is essential to promote Yki target genes 相似文献
19.
Tommy E. White Alberto Brandariz-Nuñez Jose Carlos Valle-Casuso Sarah Amie Laura Anh Nguyen Baek Kim Marina Tuzova Felipe Diaz-Griffero 《Cell host & microbe》2013,13(4):441-451
Highlights? SAMHD1 only exhibits antiviral activity when expressed in noncycling cells ? SAMHD1 is unphosphorylated in noncycling cells ? Reverse genetics revealed that phosphorylated SAMHD1 is repressive for restriction ? SAMHD1 phosphorylation regulates restriction, but not the cellular levels of dNTPs 相似文献
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Désirée R.M. Seib Nina S. Corsini Kristina Ellwanger Christian Plaas Alvaro Mateos Claudia Pitzer Christof Niehrs Tansu Celikel Ana Martin-Villalba 《Cell Stem Cell》2013,12(2):204-214
Highlights? Dkk1 antagonizes Wnt activity in NPCs ? Loss of Dkk1 increases NPCs, neuronal progeny, and neuronal activity in DG ? Loss of Dkk1 has beneficial effects on affective behavior in the tail suspension test ? Loss of Dkk1 in NPCs restores DG neurogenesis and cognition in old age 相似文献