Abstract：
:Sustained neurotransmission requires the tight coupling of synaptic vesicle (SV) exocytosis and endocytosis. The mechanisms underlying this coupling are poorly understood. We tested the hypothesis that a cGMP-dependent protein kinase (PKG), encoded by the foraging (for) gene in Drosophila melanogaster, is critical for this process using a for null mutant, genomic rescues and tissue-specific rescues. We uncoupled the exocytic and endocytic functions of FOR in neurotransmission using a temperature-sensitive shibire mutant in conjunction with fluorescein-assisted light inactivation of FOR. We discovered a dual role for presynaptic FOR, in which FOR inhibits SV exocytosis during low-frequency stimulation by negatively regulating presynaptic Ca2+ levels and maintains neurotransmission during high-frequency stimulation by facilitating SV endocytosis. Additionally, glial FOR negatively regulated nerve terminal growth through TGF-β signalling, and this developmental effect was independent of the effects of FOR on neurotransmission. Overall, FOR plays a critical role in coupling SV exocytosis and endocytosis, thereby balancing these two components to maintain sustained neurotransmission.
journal_name
J Cell Scijournal_title
Journal of cell scienceauthors
Dason JS,Allen AM,Vasquez OE,Sokolowski MBdoi
10.1242/jcs.227165subject
Has Abstractpub_date
2019-04-05 00:00:00issue
7eissn
0021-9533issn
1477-9137pii
jcs.227165journal_volume
132pub_type
杂志文章abstract：:In contrast to the highly dynamic actin cytoskeleton in non-muscle cells, actin filaments in muscle sarcomeres are thought to be relatively stable and undergo dynamics only at their ends. However, many proteins that promote rapid actin dynamics are also expressed in striated muscles. We show that a subset of actin fil...
journal_title：Journal of cell science
pub_type： 杂志文章
doi：10.1242/jcs.046805
更新日期：2009-06-15 00:00:00
abstract：:Borrelia burgdorferi is the causative agent of Lyme disease, a multisystemic disorder affecting primarily skin, joints and nervous system. Successful internalization and intracellular processing of borreliae by immune cells like macrophages is decisive for the outcome of a respective infection. Here, we use for the fi...
journal_title：Journal of cell science
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abstract：:Multinucleated giant cells, characteristic of granulomatous infections, originate from the fusion of macrophages. Using an antibody screening strategy we found that the scavenger receptor CD36 participates in macrophage fusion induced by the cytokines IL-4 and GM-CSF. Our results demonstrate that exposure of phosphati...
journal_title：Journal of cell science
pub_type： 杂志文章
doi：10.1242/jcs.037200
更新日期：2009-02-15 00:00:00
abstract：:It is now becoming clear that additional transmembrane components can modify integrin-mediated adhesion. Syndecan-4 is a transmembrane heparan sulfate proteoglycan whose external glycosaminoglycan chains can bind extracellular matrix ligands and whose core protein cytoplasmic domain can signal during adhesion. Two pap...
journal_title：Journal of cell science
pub_type： 评论,杂志文章,评审
doi：
更新日期：1999-10-01 00:00:00
abstract：:Directed axonal growth depends on correct coordination of the actin and microtubule cytoskeleton in the growth cone. However, despite the relatively large number of proteins implicated in actin-microtubule crosstalk, the mechanisms whereby actin polymerization is coupled to microtubule stabilization and advancement in...
journal_title：Journal of cell science
pub_type： 杂志文章
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更新日期：2017-08-01 00:00:00
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journal_title：Journal of cell science
pub_type： 杂志文章
doi：
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journal_title：Journal of cell science
pub_type： 杂志文章
doi：
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更新日期：2016-11-01 00:00:00
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journal_title：Journal of cell science
pub_type： 杂志文章
doi：
更新日期：1979-04-01 00:00:00
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journal_title：Journal of cell science
pub_type： 杂志文章
doi：
更新日期：2002-07-01 00:00:00
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pub_type： 杂志文章,评审
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journal_title：Journal of cell science
pub_type： 杂志文章,评审
doi：
更新日期：2002-08-01 00:00:00
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journal_title：Journal of cell science
pub_type： 杂志文章
doi：
更新日期：1983-03-01 00:00:00
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journal_title：Journal of cell science
pub_type： 杂志文章
doi：
更新日期：1991-03-01 00:00:00
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journal_title：Journal of cell science
pub_type： 杂志文章
doi：
更新日期：1995-05-01 00:00:00
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journal_title：Journal of cell science
pub_type： 杂志文章
doi：
更新日期：1988-11-01 00:00:00
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journal_title：Journal of cell science
pub_type： 杂志文章
doi：10.1242/jcs.240077
更新日期：2020-05-14 00:00:00
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journal_title：Journal of cell science
pub_type： 杂志文章
doi：10.1242/jcs.075275
更新日期：2010-11-01 00:00:00
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journal_title：Journal of cell science
pub_type： 杂志文章
doi：
更新日期：1979-02-01 00:00:00
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journal_title：Journal of cell science
pub_type： 杂志文章
doi：
更新日期：1999-02-01 00:00:00
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pub_type： 杂志文章
doi：10.1242/jcs.040162
更新日期：2009-07-15 00:00:00
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journal_title：Journal of cell science
pub_type： 杂志文章
doi：
更新日期：1979-02-01 00:00:00
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journal_title：Journal of cell science
pub_type： 杂志文章
doi：
更新日期：1990-03-01 00:00:00
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journal_title：Journal of cell science
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更新日期：2020-11-03 00:00:00
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journal_title：Journal of cell science
pub_type： 杂志文章
doi：
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journal_title：Journal of cell science
pub_type： 杂志文章,评审
doi：
更新日期：1997-12-01 00:00:00
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journal_title：Journal of cell science
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更新日期：2018-07-19 00:00:00
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journal_title：Journal of cell science
pub_type： 杂志文章
doi：
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pub_type： 杂志文章
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更新日期：2002-02-15 00:00:00
