abstract：:The molecular mechanisms underlying targeted deposition of new membrane at the advancing furrow of a dividing cell have long been intriguing to cell biologists. Three recent studies have made use of Drosophila cellularization to explore current questions in this field. These findings indicate that both the secretory p...

journal_title：Trends in cell biology

authors： Strickland LI,Burgess DR

更新日期：2004-03-01 00:00:00

abstract：:Endochondral ossification, the process by which most of the skeleton is formed, is a powerful system for studying various aspects of the biological response to degraded extracellular matrix (ECM). In addition, the dependence of endochondral ossification upon neovascularization and continuous ECM remodeling provides a ...

journal_title：Trends in cell biology

authors： Ortega N,Behonick DJ,Werb Z

更新日期：2004-02-01 00:00:00

abstract：:The translocon is responsible for the translocation of proteins across the membrane of the endoplasmic reticulum into its lumen, whereas the exocyst acts at the other end of the secretory pathway, tethering secretory vesicles to the sites of exocytosis. Here, we discuss three independent lines of evidence that indicat...

journal_title：Trends in cell biology

authors： Guo W,Novick P

更新日期：2004-02-01 00:00:00

abstract：:Signaling through the highly conserved Wingless/Wnt pathway plays a crucial role in a diverse array of developmental processes, many of which depend upon the precise regulation of Wingless/Wnt signaling levels. Recent evidence has indicated that the intracellular trafficking of Wingless/Wnt signaling components can re...

journal_title：Trends in cell biology

authors： Seto ES,Bellen HJ

更新日期：2004-01-01 00:00:00

abstract：:The eukaryotic nucleus is surrounded by a protective nuclear envelope, which is perforated by trafficking machines termed nuclear pore complexes (NPCs). The NPCs are the sole mediators of exchange between the nucleus and the cytoplasm. Small molecules pass through the NPCs unchallenged; however, large macromolecules a...

journal_title：Trends in cell biology

authors： Rout MP,Aitchison JD,Magnasco MO,Chait BT

更新日期：2003-12-01 00:00:00

abstract：:Cell biological processes are controlled by an interacting set of biochemical and electrophysiological events that are distributed within complex cellular structures. Computational models, comprising quantitative data on the interacting molecular participants in these events, provide a means for applying the scientifi...

journal_title：Trends in cell biology

authors： Slepchenko BM,Schaff JC,Macara I,Loew LM

更新日期：2003-11-01 00:00:00

abstract：:Most cells polarize in response to an asymmetric signal but some can spontaneously establish a discrete axis of polarity in the absence of a directional cue. Many mathematical models predict that locally acting positive feedback loops and globally acting negative regulators are required for pattern formation. Here, we...

journal_title：Trends in cell biology

authors： Sohrmann M,Peter M

更新日期：2003-10-01 00:00:00

abstract：:Cyclin-dependent kinase 2 (CDK2) regulates diverse aspects of the mammalian cell cycle. Most cancer cells contain mutations in the pathways that control CDK2, and CDK2 activity has received much attention as a target for cancer therapy. However, a recent report demonstrating that some cancer cells can proliferate with...

journal_title：Trends in cell biology

authors： Grim JE,Clurman BE

更新日期：2003-08-01 00:00:00

abstract：:The Golgi complex undergoes a dramatic disassembly process during apoptosis. Some Golgi proteins implicated in Golgi structure and vesicle transport are cleaved during apoptosis, and expression of noncleavable mutants of these proteins delays Golgi disassembly after pro-apoptotic stimuli. Cleavage of Golgi structural ...

journal_title：Trends in cell biology

authors： Machamer CE

更新日期：2003-06-01 00:00:00

abstract：:Research on fibroblast biology in three-dimensional collagen matrices offers new opportunities to understand the reciprocal and adaptive interactions that occur between cells and surrounding matrix in a tissue-like environment. Such interactions are integral to the regulation of connective tissue morphogenesis and dyn...

journal_title：Trends in cell biology

authors： Grinnell F

更新日期：2003-05-01 00:00:00

abstract：:The function of caveolae is hotly debated. It now seems clear that caveolae are stable membrane domains that are kept in place by the actin cytoskeleton. However, this stability can be perturbed, leading to caveolar internalization. Caveolae are important in the regulation of various signaling processes, such as nitri...

journal_title：Trends in cell biology

authors： van Deurs B,Roepstorff K,Hommelgaard AM,Sandvig K

更新日期：2003-02-01 00:00:00

abstract：:The vascular system matures during embryonic development to form a stable, well-organized tubular network. In vivo data have established that the extracellular matrix (ECM) is crucial in providing structural support to the vascular system. In vitro studies are defining the involvement of ECM-smooth-muscle cell signali...

journal_title：Trends in cell biology

authors： Brooke BS,Karnik SK,Li DY

更新日期：2003-01-01 00:00:00

abstract：:Recent studies on the endocytic itinerary of glycosphingolipids (GSLs) in sphingolipid storage disease (SLSD) fibroblasts have yielded new insights into the mechanisms underlying the endocytosis and intracellular sorting of lipids in normal and disease cells. Here we highlight new data on clathrin-independent endocyto...

journal_title：Trends in cell biology

authors： Marks DL,Pagano RE

更新日期：2002-12-01 00:00:00

abstract：:RNA-binding proteins are involved in various aspects of RNA metabolism such as processing, translational control, stabilization, localization and transport. Many of these proteins bind several RNA targets and have multiple functions. In this review we focus on RNA-binding proteins that are implicated in RNA transport ...

journal_title：Trends in cell biology

authors： Farina KL,Singer RH

更新日期：2002-10-01 00:00:00

abstract：:The availability of green fluorescent protein (GFP) as a tracer for observing proteins in living cells has revolutionized cell biology and spurred an intensive search for GFP variants with novel characteristics, additional autofluorescent proteins and alternative techniques of protein labelling. Two recent studies - o...

journal_title：Trends in cell biology

authors： Falk M

更新日期：2002-09-01 00:00:00

abstract：:Accurate spindle positioning is crucial for spatial control of cell division. During metazoan development, coordination between polarity cues and spindle position also ensures correct segregation of cell fate determinants. Converging evidence indicates that spindle positioning is achieved through interactions between ...

journal_title：Trends in cell biology

authors： Gönczy P

更新日期：2002-07-01 00:00:00

abstract：:Cancer is a multistage process requiring progressive genetic and epigenetic changes in neoplastic and responding stromal cells. Many alterations that occur during the process of malignant progression are regulated by the matrix metalloproteinase (MMP) family of extracellular proteases and their endogenous inhibitors. ...

journal_title：Trends in cell biology

authors： Rhee JS,Coussens LM

更新日期：2002-05-01 00:00:00

abstract：:Protein kinase CK2 (formerly known as casein kinase 2) is a serine/threonine protein kinase whose functions have been under investigation for over three decades, leading to the recognition that it interacts with several signaling pathways. Recent demonstrations of signal-mediated dynamic localization of CK2 and the id...

journal_title：Trends in cell biology

authors： Ahmed K,Gerber DA,Cochet C

更新日期：2002-05-01 00:00:00

abstract：:The proliferation of eukaryotic cells is a highly regulated process that depends on the precise duplication of chromosomal DNA in each cell cycle. Regulation of the replication licensing system, which promotes the assembly of complexes of proteins termed Mcm2-7 onto replication origins, is responsible for preventing r...

journal_title：Trends in cell biology

authors： Blow JJ,Hodgson B

更新日期：2002-02-01 00:00:00

abstract：:Adhesion to the extracellular matrix (ECM) is a crucial regulator of cell function, and it is now well established that signaling by integrins mediates many of these effects. Ten years of research has seen integrin signaling advance on many fronts towards a molecular understanding of the control mechanisms. Most strik...

journal_title：Trends in cell biology

authors： Schwartz MA

更新日期：2001-12-01 00:00:00

abstract：:Research performed over the past decade has transformed apoptosis from a distinctive form of cell death known only by its characteristic morphology and genomic destruction to an increasingly well understood cellular disassembly pathway remarkable for its complex and multifaceted regulation. Here, we summarize current ...

journal_title：Trends in cell biology

authors： Kaufmann SH,Hengartner MO

更新日期：2001-12-01 00:00:00

abstract：:Why are women so under-represented at the top echelons of science? Why do so many drop out just as their careers should be blossoming? Are women in science being actively discriminated against by their peers, and, if, so what can be done about this? These were just a few of the puzzles reflected upon at a recent Europ...

journal_title：Trends in cell biology

authors： Wilson EK

更新日期：2001-11-01 00:00:00

abstract：:Decreased aerobic (hypoxic) conditions in tumors induce the release of cytokines that promote vascularization and thereby enhance tumor growth and metastasis. Recent major advances have provided insight into the role hypoxia plays in cancer biology. The domain structure of the hypoxia-inducible factor 1alpha (HIF-1alp...

journal_title：Trends in cell biology

authors： Brahimi-Horn C,Berra E,Pouysségur J

更新日期：2001-11-01 00:00:00

abstract：:It was once believed that common mechanisms underpin the transfer of proteins across the membrane systems of organelles such as mitochondria, chloroplasts and peroxisomes. Now that many of the core components of the translocases have been indentified, results discussed at a recent conference [Max-Delbrück-Centrum Symp...

journal_title：Trends in cell biology

authors： Kunau WH,Agne B,Girzalsky W

更新日期：2001-09-01 00:00:00

abstract：:Ran is an abundant GTPase that is highly conserved in eukaryotic cells and has been implicated in many aspects of nuclear structure and function, especially determining the directionality of nucleocytoplasmic transport during interphase. However, cell-free systems have recently shown that Ran plays distinct roles in m...

journal_title：Trends in cell biology

authors： Clarke PR,Zhang C

更新日期：2001-09-01 00:00:00

abstract：:Genetic instability contributes to the origin of cancer as well as to the ability of cancer cells to become resistant to various therapies. Because of this, cytotoxic rather than cytostatic therapies might be most effective against this disease. Many oncogenes and tumor suppressors mediate their effects by interfering...

journal_title：Trends in cell biology

authors： Huang P,Oliff A

更新日期：2001-08-01 00:00:00

abstract：:There is a pronounced tendency among cell biologists to focus on qualitative aspects of cell physiology. The remarkable accomplishments of evolution in creating cells can only be fully appreciated, however, by combining this qualitative analysis with a quantitative assessment of cellular constituents and processes. He...

journal_title：Trends in cell biology

authors： Yewdell JW

更新日期：2001-07-01 00:00:00

abstract：:Axons elongate and retract in response to environmental signals during the development of the nervous system. There is broad agreement that these signals must affect the cytoskeleton to elicit bouts of elongation or retraction. Most contemporary studies have speculated that bouts of elongation involve polymerization o...

journal_title：Trends in cell biology

authors： Baas PW,Ahmad FJ

更新日期：2001-06-01 00:00:00

abstract：:Cellular organization of the cytoskeleton, assembly of intracellular signaling complexes and movement of membrane receptors into supramolecular activation complexes (SMACs) are crucial prerequisites for lymphocyte activation and function. Full T-cell activation requires costimulatory signals in addition to antigen-med...

journal_title：Trends in cell biology

authors： Krawczyk C,Penninger JM

更新日期：2001-05-01 00:00:00

abstract：:Despite their small size and lack of obvious intracellular structures, bacteria have a complex and dynamic intracellular organization. Recent work has shown that many proteins, and even regions of the chromosome, are localized to specific subcellular regions that can change over time, sometimes extraordinarily fast. P...

journal_title：Trends in cell biology

authors： Jensen RB,Shapiro L

更新日期：2000-11-01 00:00:00

abstract：:Synaptic junctions are highly specialized structures designed to promote the rapid and efficient transmission of signals from the presynaptic terminal to the postsynaptic membrane within the central nervous system. Proteins containing PDZ domains play a fundamental organizational role at both the pre- and postsynaptic...

journal_title：Trends in cell biology

authors： Garner CC,Nash J,Huganir RL

更新日期：2000-07-01 00:00:00

abstract：:In essence, the mitotic cell cycle in eukaryotes involves the duplication and separation of chromosomes, coupled to the process of dividing one cell into two. Cytokinesis is therefore the culmination of a series of events that were triggered during G1 phase, and brings the daughter cells back to the starting position ...

journal_title：Trends in cell biology

authors： den Boer BG,Murray JA

更新日期：2000-06-01 00:00:00

abstract：:Centromere formation is a complex process that involves the packaging of DNA into a centromere-unique chromatin, chemical modification and the seeding of kinetochore and associated proteins. The early steps in this process, in which a chromosomal region is marked for centromerization (that is, to become resolutely com...

journal_title：Trends in cell biology

authors： Choo KH

更新日期：2000-05-01 00:00:00

abstract：:The spindle checkpoint is an evolutionarily conserved mitotic regulatory mechanism that ensures that anaphase is not attempted until chromosomes are properly aligned on the spindle. Two different cell-cycle transitions must be inhibited by the spindle checkpoint to arrest cells at metaphase and prevent mitotic exit. T...

journal_title：Trends in cell biology

authors： Gardner RD,Burke DJ

更新日期：2000-04-01 00:00:00

abstract：:Endocytosis is a complicated yet highly efficient process that involves the uptake and processing of cargoes, ranging from small molecules, to activated signalling receptors, to whole microorganisms. Regulation of endocytic pathways is poorly understood. Recent evidence suggests that the Rho GTPase family of signallin...

journal_title：Trends in cell biology

authors： Ellis S,Mellor H

更新日期：2000-03-01 00:00:00

abstract：:The nuclear envelope (NE) breaks down reversibly and reassembles at mitosis. Two models of mitotic nuclear membrane disassembly and reformation have emerged from studies of NE dynamics in somatic cells and egg extracts. One model suggests that nuclear membranes fragment reversibly by vesiculation, producing NE-derived...

journal_title：Trends in cell biology

authors： Collas P,Courvalin JC

更新日期：2000-01-01 00:00:00

abstract：:Microbiology has a long way to go. Microbes are ubiquitous, and all other life forms in the biosphere exist solely because of them, but, as less than 1% of microorganisms can be grown in the laboratory, more than a century of research has revealed only the tip of the iceberg concerning this most crucial of life scienc...

journal_title：Trends in cell biology

authors： Davies J

更新日期：1999-12-01 00:00:00

abstract：:Our present understanding of intracellular protein degradation developed from an attempt to understand the metabolic stability of proteins in cells. With the unravelling of its complex biochemical machinery has come a realization that protein degradation plays an important role in the most crucial events in the cell c...

journal_title：Trends in cell biology

authors： Kirschner M

更新日期：1999-12-01 00:00:00

abstract：:Members of the Aurora/Ipl1p family of mitotically regulated serine/threonine kinases are emerging as key regulators of chromosome segregation and cytokinesis. Proper chromosome segregation and cytokinesis ensure that each daughter cell receives the full complement of genetic material. Defects in these processes can le...

journal_title：Trends in cell biology

authors： Bischoff JR,Plowman GD

更新日期：1999-11-01 00:00:00

abstract：:The actin-depolymerizing factor (ADF)/cofilins are a family of essential actin regulatory proteins, ubiquitous among eukaryotes, that enhance the turnover of actin by regulating the rate constants of polymerization and depolymerization at filament ends, changing the twist of the filament and severing actin filaments. ...

journal_title：Trends in cell biology

authors： Bamburg JR,McGough A,Ono S

更新日期：1999-09-01 00:00:00