Abstract:
:Heparan sulfate (HS) proteoglycans modulate the activity of multiple growth factors on the cell surface and extracellular matrix. However, it remains unclear how the HS chains control the movement and reception of growth factors into targeted receiving cells during mammalian morphogenetic processes. Here, we found that HS-deficient Ext2 null mutant mouse embryos fail to respond to fibroblast growth factor (FGF) signaling. Marker expression analyses revealed that cell surface-tethered HS chains are crucial for local retention of FGF4 and FGF8 ligands in the extraembryonic ectoderm. Fine chimeric studies with single-cell resolution and expression studies with specific inhibitors for HS movement demonstrated that proteolytic cleavage of HS chains can spread FGF signaling to adjacent cells within a short distance. Together, the results show that spatiotemporal expression of cell surface-tethered HS chains regulate the local reception of FGF-signaling activity during mammalian embryogenesis.
journal_name
Dev Celljournal_title
Developmental cellauthors
Shimokawa K,Kimura-Yoshida C,Nagai N,Mukai K,Matsubara K,Watanabe H,Matsuda Y,Mochida K,Matsuo Idoi
10.1016/j.devcel.2011.06.027subject
Has Abstractpub_date
2011-08-16 00:00:00pages
257-72issue
2eissn
1534-5807issn
1878-1551pii
S1534-5807(11)00261-9journal_volume
21pub_type
杂志文章abstract::Wingless (Wg) is a morphogen required for the patterning of many Drosophila tissues. Several lines of evidence implicate heparan sulfate-modified proteoglycans (HSPGs) such as Dally-like protein (Dlp) in the control of Wg distribution and signaling. We show that dlp is required to limit Wg levels in the matrix, contra...
journal_title:Developmental cell
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abstract::Localization of the actin crosslinking protein, alpha-actinin, to the cleavage furrow has been previously reported. However, its functions during cytokinesis remain poorly understood. We have analyzed the functions of alpha-actinin during cytokinesis by a combination of molecular manipulations and imaging-based techni...
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abstract::The conserved Hippo kinase pathway plays a pivotal role in organ size control and tumor suppression by restricting proliferation and promoting apoptosis. Whereas the function of the core kinase cascade, consisting of the serine/threonine kinases Hippo and Warts, in phosphorylating and thereby inactivating the transcri...
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abstract::RITS (RNA-induced initiation of transcriptional gene silencing complex) plays diverse roles in heterochromatin regulation: silencing transcription by recruitment of chromatin modifiers and destroying transcripts by RNAi. In a recent issue of Molecular Cell, Li et al. now show that the polymerization of Tas3, a compone...
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abstract::Specialized areas in the vertebrate retina are critical for high-acuity vision, yet the molecular mechanisms driving the development of high-acuity areas (HAAs) remain largely unknown. In Developmental Cell, da Silva and Cepko (2017) show that restricted degradation of retinoic acid and elevated FGF8 signaling give ri...
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abstract::During embryonic development, cells must establish fates, morphologies, and behaviors in coordination with one another to form a functional body. A prevalent hypothesis for how this coordination is achieved is that each cell's fate and behavior is determined by a defined mixture of RNAs. Only recently has it become po...
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pub_type: 评论,杂志文章
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abstract::The quiescent center (QC) maintains the activity of the surrounding stem cells within the root stem cell niche, yet specific molecular players sustaining the low rate of QC cell division remain poorly understood. Here, we identified a R2R3-MYB transcription factor, BRAVO (BRASSINOSTEROIDS AT VASCULAR AND ORGANIZING CE...
journal_title:Developmental cell
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doi:10.1016/j.devcel.2014.05.020
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pub_type: 评论,杂志文章
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journal_title:Developmental cell
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journal_title:Developmental cell
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doi:10.1016/j.devcel.2006.02.018
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abstract::Hearts of mice lacking Isl1, a LIM homeodomain transcription factor, are completely missing the outflow tract, right ventricle, and much of the atria. isl1 expression and lineage tracing of isl1-expressing progenitors demonstrate that Isl1 is a marker for a distinct population of undifferentiated cardiac progenitors t...
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doi:10.1016/s1534-5807(03)00363-0
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abstract::DSL ligands promote proteolysis of the Notch receptor, to release active Notch intracellular domain (N(ICD)). Conversely, the E3 ubiquitin ligase Deltex can activate ligand-independent Notch proteolysis and signaling. Here we show that Deltex effects require endocytic trafficking by HOPS and AP-3 complexes. Our data s...
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doi:10.1016/j.devcel.2008.09.002
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abstract::SnoN regulates multiple signaling pathways, including TGF-β/Smad and p53, and displays both pro-oncogenic and anti-oncogenic activities in human cancer. We have observed previously that both its intracellular localization and expression levels are sensitive to cell density, suggesting that it may crosstalk with Hippo ...
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abstract::Microglia are the primary immune cells in the brain. Under physiological conditions, they typically stay in a "resting" state, with ramified processes continuously extending to and retracting from surrounding neural tissues. Whether and how such highly dynamic resting microglia functionally interact with surrounding n...
journal_title:Developmental cell
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