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Complement C3 Affects Rac1 Activity in the Developing Brain

Overview of attention for article published in Frontiers in Molecular Neuroscience, May 2018
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Title
Complement C3 Affects Rac1 Activity in the Developing Brain
Published in
Frontiers in Molecular Neuroscience, May 2018
DOI 10.3389/fnmol.2018.00150
Pubmed ID
Authors

Anna Gorelik, Tamar Sapir, Lihi Ben-Reuven, Orly Reiner

Abstract

The complement system, which is part of the innate immune response system, has been recently shown to participate in multiple key processes in the developing brain. Here we aimed to elucidate downstream signaling responses linking complement C3, a key molecule of the pathway, to small GTPases, known to affect the cytoskeleton. The expression pattern of the activated small GTPase Rac1 resembled that of complement C3. C3-deficient mice exhibited reduced Rac1 and elevated RhoA activity in comparison with control mice. The most pronounced reduction of Rac1 activity occurred at embryonic day 14. Rac1 has been implicated in neuronal migration as well as neuronal stem cell proliferation and differentiation. Consistent with the reduction in Rac1 activity, the expression of phospho-cofilin, decreased in migrating neurons. Reduced Rac1-GTP was also correlated with a decrease in the expression of progenitor markers (Nestin, Pax6 and Tbr2) and conversely the expression of neuronal markers (Dcx and NeuN) increased in C3 knockout (KO) cortices in comparison with wild-type (WT) cortices. More specifically, C3 deficiency resulted in a reduction in the number of the cells in S-phase and an elevation in the number of cells that precociously exited the cell cycle. Collectively, our findings suggest that C3 impacts the activity of small GTPases resulting in cell cycle defects and premature neuronal differentiation.

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Mendeley readers

Mendeley readers

The data shown below were compiled from readership statistics for 17 Mendeley readers of this research output. Click here to see the associated Mendeley record.

Geographical breakdown

Country Count As %
Unknown 17 100%

Demographic breakdown

Readers by professional status Count As %
Researcher 4 24%
Student > Ph. D. Student 4 24%
Student > Master 3 18%
Other 2 12%
Professor > Associate Professor 2 12%
Other 1 6%
Unknown 1 6%
Readers by discipline Count As %
Biochemistry, Genetics and Molecular Biology 7 41%
Neuroscience 4 24%
Agricultural and Biological Sciences 2 12%
Medicine and Dentistry 1 6%
Social Sciences 1 6%
Other 2 12%
Attention Score in Context

Attention Score in Context

This research output has an Altmetric Attention Score of 1. This is our high-level measure of the quality and quantity of online attention that it has received. This Attention Score, as well as the ranking and number of research outputs shown below, was calculated when the research output was last mentioned on 12 May 2018.
All research outputs
#20,486,884
of 23,049,027 outputs
Outputs from Frontiers in Molecular Neuroscience
#2,502
of 2,920 outputs
Outputs of similar age
#288,601
of 327,924 outputs
Outputs of similar age from Frontiers in Molecular Neuroscience
#112
of 124 outputs
Altmetric has tracked 23,049,027 research outputs across all sources so far. This one is in the 1st percentile – i.e., 1% of other outputs scored the same or lower than it.
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