Abstract:
:The NAD+-dependent deacetylase Sirtuin 1 (SIRT1) is down-regulated in triple-negative breast cancer. To determine the mechanistic basis by which reduced SIRT1 expression influences processes related to certain aggressive cancers, we examined the consequences of depleting breast cancer cells of SIRT1. We discovered that reducing SIRT1 levels decreased the expression of one particular subunit of the vacuolar-type H+ ATPase (V-ATPase), which is responsible for proper lysosomal acidification and protein degradation. This impairment in lysosomal function caused a reduction in the number of multi-vesicular bodies (MVBs) targeted for lysosomal degradation and resulted in larger MVBs prior to their fusing with the plasma membrane to release their contents. Collectively, these findings help explain how reduced SIRT1 expression, by disrupting lysosomal function and generating a secretome comprising exosomes with unique cargo and soluble hydrolases that degrade the extracellular matrix, can promote processes that increase breast-cancer-cell survival and invasion.
journal_name
Dev Celljournal_title
Developmental cellauthors
Latifkar A,Ling L,Hingorani A,Johansen E,Clement A,Zhang X,Hartman J,Fischbach C,Lin H,Cerione RA,Antonyak MAdoi
10.1016/j.devcel.2019.03.011subject
Has Abstractpub_date
2019-05-06 00:00:00pages
393-408.e7issue
3eissn
1534-5807issn
1878-1551pii
S1534-5807(19)30188-1journal_volume
49pub_type
杂志文章abstract::High-molecular-weight hyaluronan, a major component of the extracellular matrix, is anti-oncogenic, whereas low-molecular-weight hyaluronan is pro-oncogenic, though the mechanisms underlying the size-dependent opposite bioactivities of hyaluronan remain uncertain. We show here that treatment with high-molecular-weight...
journal_title:Developmental cell
pub_type: 杂志文章
doi:10.1016/j.devcel.2019.04.018
更新日期:2019-05-20 00:00:00
abstract::Tight control of the number and distribution of crossovers is of great importance for meiosis. Crossovers establish chiasmata, which are physical connections between homologous chromosomes that provide the tension necessary to align chromosomes on the meiotic spindle. Understanding the mechanisms underlying crossover ...
journal_title:Developmental cell
pub_type: 杂志文章
doi:10.1016/j.devcel.2008.07.006
更新日期:2008-09-01 00:00:00
abstract::In this issue of Developmental Cell, Chakraborty et al. report that efficient advancement through G1/S phase requires the downregulation of Nup96 levels during M phase. The authors show that oscillations in Nup96 levels plays a key role in maintaining normal cell proliferation, likely by regulating the export of speci...
journal_title:Developmental cell
pub_type: 评论,杂志文章
doi:10.1016/j.devcel.2008.10.010
更新日期:2008-11-01 00:00:00
abstract::To maintain proper organ size, nature has devised trans-organ communication systems-involving both paracrine and circulating regulatory factors-to safeguard homeostasis. In this issue of Developmental Cell, Ji et al. (2019) now describe an enterohepatic feedback loop that balances tissue size and function in the mamma...
journal_title:Developmental cell
pub_type: 评论,杂志文章
doi:10.1016/j.devcel.2019.02.008
更新日期:2019-02-25 00:00:00
abstract::To enable stratification and barrier function, the epidermis must permit self-renewal while maintaining adhesive connections. By generating K14-GFP-actin mice to monitor actin dynamics in cultured primary keratinocytes, we uncovered a role for the actin cytoskeleton in establishing cellular organization. During epider...
journal_title:Developmental cell
pub_type: 杂志文章
doi:10.1016/s1534-5807(02)00259-9
更新日期:2002-09-01 00:00:00
abstract::Fibro/adipogenic progenitors (FAPs) are emerging as crucial regulators of fibrous and fat deposits during skeletal muscle regeneration. In a recent issue of Cell, Kopinke et al. (2017) report that primary cilia induce the adipogenic fate of FAPs in injured and diseased muscle by restraining Hedgehog signaling. ...
journal_title:Developmental cell
pub_type: 评论,杂志文章
doi:10.1016/j.devcel.2017.06.023
更新日期:2017-07-24 00:00:00
abstract::The majority of excitatory synaptic transmission in the brain occurs at dendritic spines, which are actin-rich protrusions on the dendrites. The asymmetric nature of these structures suggests that proteins regulating cell polarity might be involved in their formation. Indeed, the polarity protein PAR-3 is required for...
journal_title:Developmental cell
pub_type: 杂志文章
doi:10.1016/j.devcel.2007.11.020
更新日期:2008-02-01 00:00:00
abstract::Reactive oxygen species (ROS), despite having damaging roles, serve as signaling molecules regulating diverse biological and physiological processes. Employing in vivo genetic studies in Drosophila, we show that besides causing G1-S arrest by activation of Dacapo, ROS can simultaneously inhibit cell growth by regulati...
journal_title:Developmental cell
pub_type: 杂志文章
doi:10.1016/j.devcel.2019.04.008
更新日期:2019-05-06 00:00:00
abstract::In the last ten years, we have made considerable progress in our genetic and molecular understanding of all aspects of skeletal development, chondrogenesis, joint formation, and osteogenesis. This review addresses the role of the principal growth factors and transcription factors affecting these different processes an...
journal_title:Developmental cell
pub_type: 杂志文章,评审
doi:10.1016/s1534-5807(02)00157-0
更新日期:2002-04-01 00:00:00
abstract::How kinetochores regulate microtubule dynamics to ensure proper kinetochore-microtubule interactions is unknown. Here, we studied this during early mitosis in Saccharomyces cerevisiae. When a microtubule shrinks and its plus end reaches a kinetochore bound to its lateral surface, the microtubule end attempts to tether...
journal_title:Developmental cell
pub_type: 杂志文章
doi:10.1016/j.devcel.2011.09.006
更新日期:2011-11-15 00:00:00
abstract::Several genes are known to regulate circadian rhythms in Arabidopsis, but the identity of the central oscillator has not been established. LHY and CCA1 are related MYB-like transcription factors proposed to be closely involved. Here we demonstrate that, as shown previously for CCA1, inactivation of LHY shortens the pe...
journal_title:Developmental cell
pub_type: 杂志文章
doi:10.1016/s1534-5807(02)00170-3
更新日期:2002-05-01 00:00:00
abstract::Autophagy is the major cellular process responsible for bulk cytoplasmic degradation. Two reports in this issue of Developmental Cell describe how both PI3 kinase and TOR signaling in Drosophila are critical for controlling autophagy in response to developmental and environmental cues. ...
journal_title:Developmental cell
pub_type: 评论,杂志文章
doi:10.1016/j.devcel.2004.07.014
更新日期:2004-08-01 00:00:00
abstract::Cell and organelle membranes consist of a complex mixture of phospholipids (PLs) that determine their size, shape, and function. Phosphatidylcholine (PC) is the most abundant phospholipid in eukaryotic membranes, yet how cells sense and regulate its levels in vivo remains unclear. Here we show that PCYT1A, the rate-li...
journal_title:Developmental cell
pub_type: 杂志文章
doi:10.1016/j.devcel.2018.04.012
更新日期:2018-05-21 00:00:00
abstract::Intercellular communication is vital to tumor progression. In this issue of Developmental Cell, Bertolini et al. (2020) describe how small extracellular vesicles released from hypoxic mammary tumor cells facilitate intercellular communication, leading to alterations in mitochondrial dynamics and acquisition of invasiv...
journal_title:Developmental cell
pub_type: 杂志文章
doi:10.1016/j.devcel.2020.09.027
更新日期:2020-10-26 00:00:00
abstract::When two colonies of the tunicate Botryllus contact each other, they either fuse into a single colony or mount a destructive reaction, which keeps them apart. Which of the two reactions takes place is determined by a single, highly polymorphic fusion/histocompatibility (FuHC) locus. Recent communications report the cl...
journal_title:Developmental cell
pub_type: 杂志文章
doi:10.1016/j.devcel.2005.12.009
更新日期:2006-01-01 00:00:00
abstract::Secreted proteins of the Wnt family affect axon guidance, asymmetric cell division, and cell fate. We show here that C. elegans Wnts acting through Frizzled receptors can shape axon and dendrite trajectories by reversing the anterior-posterior polarity of neurons. In lin-44/Wnt and lin-17/Frizzled mutants, the polarit...
journal_title:Developmental cell
pub_type: 杂志文章
doi:10.1016/j.devcel.2006.01.013
更新日期:2006-03-01 00:00:00
abstract::A century ago, Oscar Hertwig discovered that cells orient their cleavage plane orthogonal to their long axis. Reporting recently in Nature, Bosveld et al. (2016) shed light on how, showing that NuMA/Mud localization at tricellular junctions provides mitotic cells with the memory of interphase shape used to orient clea...
journal_title:Developmental cell
pub_type: 评论,杂志文章
doi:10.1016/j.devcel.2016.03.005
更新日期:2016-03-21 00:00:00
abstract::Inflammatory pathways protect the body from infection and promote healing following injury. Recent reports demonstrate the surprising involvement of these pathways during hematopoietic stem cell emergence from the hemogenic endothelium in both zebrafish and mice. ...
journal_title:Developmental cell
pub_type: 杂志文章
doi:10.1016/j.devcel.2014.11.026
更新日期:2014-12-08 00:00:00
abstract::Drosophila gurken mRNA is localized by dynein-mediated transport to a crescent near the oocyte nucleus, thus targeting the TGFalpha signal and forming the primary embryonic axes. Here, we show that gurken and the I factor, a non-LTR retrotransposon, share a small consensus RNA stem loop of defined secondary structure,...
journal_title:Developmental cell
pub_type: 杂志文章
doi:10.1016/j.devcel.2005.04.012
更新日期:2005-07-01 00:00:00
abstract::The E-Cadherin-catenin complex plays a critical role in epithelial cell-cell adhesion, polarization, and morphogenesis. Here, we have analyzed the mechanism of Drosophila E-Cadherin (DE-Cad) localization. Loss of function of the Drosophila exocyst components sec5, sec6, and sec15 in epithelial cells results in DE-Cad ...
journal_title:Developmental cell
pub_type: 杂志文章
doi:10.1016/j.devcel.2005.07.013
更新日期:2005-09-01 00:00:00
abstract::Tethering factors have been shown to interact with Rabs and SNAREs and, more recently, with coat proteins. Coat proteins are required for cargo selection and membrane deformation to bud a transport vesicle from a donor compartment. It was once thought that a vesicle must uncoat before it recognizes its target membrane...
journal_title:Developmental cell
pub_type: 杂志文章,评审
doi:10.1016/j.devcel.2007.04.005
更新日期:2007-05-01 00:00:00
abstract::Morphological plasticity and front-rear polarity are essential for directed cell migration. In this issue of Developmental Cell, Witze et al. (2013) demonstrate that Wnt5a-mediated signaling induces localization of the cortical endoplasmic reticulum to the trailing edge of melanoma cells and mediates calcium flux, rea...
journal_title:Developmental cell
pub_type: 评论,杂志文章
doi:10.1016/j.devcel.2013.09.013
更新日期:2013-09-30 00:00:00
abstract::Loss of the kinase MAP3K4 causes mouse embryonic gonadal sex reversal due to reduced expression of the testis-determining gene, Sry. However, because of widespread expression of MAP3K4, the cellular basis of this misregulation was unclear. Here, we show that mice lacking Gadd45γ also exhibit XY gonadal sex reversal ca...
journal_title:Developmental cell
pub_type: 杂志文章
doi:10.1016/j.devcel.2012.09.016
更新日期:2012-11-13 00:00:00
abstract::We have used Drosophila ovarian follicle stem cells (FSCs) to study how stem cells are regulated by external signals and draw three main conclusions. First, the spatial definition of supportive niche positions for FSCs depends on gradients of Hh and JAK-STAT pathway ligands, which emanate from opposite, distant sites....
journal_title:Developmental cell
pub_type: 杂志文章
doi:10.1016/j.devcel.2012.09.010
更新日期:2012-10-16 00:00:00
abstract::Small GTPase Cdc42 triggers polarity establishment in budding yeast. In this issue of Developmental Cell, Okada et al. (2013) combine in silico modeling and cell biology to show that Cdc42, septins, and the exocytosis pathway are integrated in a feedback system to define and insulate the site of polarity in the membra...
journal_title:Developmental cell
pub_type: 评论,杂志文章
doi:10.1016/j.devcel.2013.07.004
更新日期:2013-07-29 00:00:00
abstract::Trunk neural crest cells are generated at the border between the neural plate and nonneural ectoderm, where they initiate a distinct program of gene expression, undergo an epithelial-mesenchymal transition (EMT), and delaminate from the neuroepithelium. Here, we provide evidence that members of three families of trans...
journal_title:Developmental cell
pub_type: 杂志文章
doi:10.1016/j.devcel.2004.12.010
更新日期:2005-02-01 00:00:00
abstract::Secreted molecules coordinate organ function. In a recent issue of Cell, Hudry et al. (2019) uncover a Drosophila testis-midgut interaction via cytokine and citrate signaling that regulates intestinal metabolism, spermatogenesis, and food intake. This impressive study is a striking example of the role of spatial organ...
journal_title:Developmental cell
pub_type: 评论,杂志文章
doi:10.1016/j.devcel.2019.07.029
更新日期:2019-08-19 00:00:00
abstract::Infectious, self-propagating protein aggregates (prions) as well as structurally related amyloid fibrils have traditionally been associated with neurodegenerative diseases in mammals. However, recent work in fungi indicates that prions are not simply aberrations of protein folding, but are in fact widespread, conserve...
journal_title:Developmental cell
pub_type: 杂志文章,评审
doi:10.1016/s1534-5807(02)00118-1
更新日期:2002-02-01 00:00:00
abstract::The mechanism responsible for subdividing the embryo into individual tissues is a fundamental, yet still poorly understood, question in developmental biology. Various general hypotheses have been proposed, involving differences in cell adhesion, contractility, or contact-mediated repulsion. However, the key parameter ...
journal_title:Developmental cell
pub_type: 杂志文章
doi:10.1016/j.devcel.2013.09.004
更新日期:2013-10-14 00:00:00
abstract::Neutrophils are essential to the homeostatic mission of safeguarding host tissues, responding rapidly and diversely to breaches of the host's barriers to infection, and returning tissues to a sterile state. In response to specific stimuli, neutrophils extrude modified chromatin structures decorated with specific cytop...
journal_title:Developmental cell
pub_type: 杂志文章,评审
doi:10.1016/j.devcel.2018.01.019
更新日期:2018-03-12 00:00:00