Table of contents


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Editorial

Nematodes net Nobel ppE243 - E244

doi:10.1038/ncb1102-e243


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Commentary

Synaptic vesicle retrieval: still time for a kiss ppE245 - E248

Ole Kjaerulff, Patrik Verstreken & Hugo J. Bellen

doi:10.1038/ncb1102-e245

After exocytosis, synaptic vesicles are reformed by slow clathrin-mediated endocytosis. However, evidence also supports the existence of faster retreival mechanisms in neurons, including 'kiss-and-run', where vesicles fuse only partially with the presynaptic membrane before being retrieved. New insights in synaptic vesicle dynamics have been obtained from vesicle imaging and from studies with mutant animals. Recently, measurements of capacitance changes induced by the fusion of single synaptic vesicles in synapses corroborate the hypothesis that kiss-and-run operates in neurons. Here, we review the evidence supporting fast vesicle retrieval and evaluate its role in neurotransmitter release.


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News and Views

Wnt signalling sees spots ppE249 - E250

Michael Povelones & Roel Nusse

doi:10.1038/ncb1102-e249

The organization of signalling complexes represents the coalescence of cell biology and signal transduction. Recent work on Dishevelled (Dvl), a multifunctional component of the Wnt–Frizzled (Fz) signalling pathway, ascribes vesicle- and actin-binding properties to a single domain within the protein. This could represent a critical point for divergence of the Wnt signalling pathway.


Pin-ning down p53 function pE251

Bernd Pulverer

doi:10.1038/ncb1102-e251a


Drosophila, actin and videotape — new insights in wound healing ppE251 - E253

Stéphane Noselli

doi:10.1038/ncb1102-e251b

The combined use of laser ablation and live imaging in Drosophila melanogaster embryos provides new ways to visualize the dynamics of wound healing. Analysis of lesions made in living embryos mutant for small GTPases reveal distinct and unexpected roles for actin cables and protrusions in wound repair. Hole closure is definitely more complex than simply pulling a string.

See also: Brief Communication by Wood et al.


Integrins as developmental switches ppE253 - E255

Trent A. Watkins & Ben A. Barres

doi:10.1038/ncb1102-e253

Neuregulin (NRG) is a crucial regulator of oligodendrocyte development, strongly promoting both the proliferation of oligodendrocyte precursor cells and the survival and maturation of oligodendrocytes. How can the same growth factor mediate such different effects? New work in this issue of Nature Cell Biology implicates an integrin-mediated switch in signalling that results in the loss of the proliferative response and the enhancement of survival and maturation.

See also: Article by Colognato et al.


Chk2 leaves the PML depot ppE255 - E256

Monica Venere, Tamara A. Mochan & Thanos D. Halazonetis

doi:10.1038/ncb1102-e255

The Chk2 checkpoint kinase is implicated in radiation-induced apoptosis. New findings suggest that radiation induces dissociation of Chk2 from the promyelocytic leukemia gene product (PML). Thus, PML nuclear bodies may function as regulated storage depots, releasing specific proteins in response to specific types of cellular stress.

See also: Article by Yang et al.


Polar exploration pE256

Sarah Greaves

doi:10.1038/ncb1102-e256


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Book Review

Developmental biology turned on its head pE257

Jean-Paul Vincent reviews Molecular Principles of Animal Development by A. Martinez Arias & A. Stewart

doi:10.1038/ncb1102-e257


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Meeting Report

Hopeful monsters and morphogens at the beach ppE259 - E262

Lee Niswander & Kathryn V. Anderson

doi:10.1038/ncb1102-e259


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Review

The cellular and molecular basis of store-operated calcium entry ppE263 - E272

Kartik Venkatachalam, Damian B. van Rossum, Randen L. Patterson, Hong-Tao Ma & Donald L. Gill

doi:10.1038/ncb1102-e263


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Articles

CNS integrins switch growth factor signalling to promote target-dependent survival pp833 - 841

Holly Colognato, Wia Baron, Virginia Avellana-Adalid, Jõao B. Relvas, Anne Baron-Van Evercooren, Elisabeth Georges-Labouesse & Charles ffrench-Constant

doi:10.1038/ncb865

See also: News and Views by Watkins & Barres


BID regulation by p53 contributes to chemosensitivity pp842 - 849

Joanna K. Sax, Peiwen Fei, Maureen E. Murphy, Eric Bernhard, Stanley J. Korsmeyer & Wafik S. El-Deiry

doi:10.1038/ncb866


Sprouty1 and Sprouty2 provide a control mechanism for the Ras/MAPK signalling pathway pp850 - 858

Hiroshi Hanafusa, Satoru Torii, Takayuki Yasunaga & Eisuke Nishida

doi:10.1038/ncb867


Direct coupling of the cell cycle and cell death machinery by E2F pp859 - 864

Zaher Nahle, Julia Polakoff, Ramana V. Davuluri, Mila E. McCurrach, Matthew D. Jacobson, Masashi Narita, Michael Q. Zhang, Yuri Lazebnik, Dafna Bar-Sagi & Scott W. Lowe

doi:10.1038/ncb868


PML-dependent apoptosis after DNA damage is regulated by the checkpoint kinase hCds1/Chk2 pp865 - 870

Shutong Yang, Christin Kuo, John E. Bisi & Myung K. Kim

doi:10.1038/ncb869

See also: News and Views by Venere et al.


Chromosome-induced microtubule assembly mediated by TPX2 is required for spindle formation in HeLa cells pp871 - 879

Oliver J. Gruss, Malte Wittmann, Hideki Yokoyama, Rainer Pepperkok, Thomas Kufer, Herman Silljé, Eric Karsenti, Iain W. Mattaj & Isabelle Vernos

doi:10.1038/ncb870


The Doc1 subunit is a processivity factor for the anaphase-promoting complex pp880 - 887

Christopher W. Carroll & David O. Morgan

doi:10.1038/ncb871


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Brief Communications

NF-kappaB2 p100 is a pro-apoptotic protein with anti-oncogenic function pp888 - 893

Yongqing Wang, Hongjuan Cui, Allen Schroering, Jane L. Ding, William S. Lane, Gaël McGill, David E. Fisher & Han-Fei Ding

doi:10.1038/ncb872


Membrane microviscosity regulates endothelial cell motility pp894 - 900

Prabar K. Ghosh, Amit Vasanji, Gurunathan Murugesan, Steven J. Eppell, Linda M. Graham & Paul L. Fox

doi:10.1038/ncb873


A novel Epac-specific cAMP analogue demonstrates independent regulation of Rap1 and ERK pp901 - 906

Jorrit M. Enserink, Anne E. Christensen, Johan de Rooij, Miranda van Triest, Frank Schwede, Hans Gottfried Genieser, Stein O. Døskeland, Jonathan L. Blank & Johannes L. Bos

doi:10.1038/ncb874


Wound healing recapitulates morphogenesis in Drosophila embryos pp907 - 912

William Wood, Antonio Jacinto, Richard Grose, Sarah Woolner, Jonathan Gale, Clive Wilson & Paul Martin

doi:10.1038/ncb875

See also: News and Views by Noselli


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