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Synaptic localisation of SRF coactivators, MKL1 and MKL2, and their role in dendritic spine morphology
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Synaptic localisation of SRF coactivators, MKL1 and MKL2, and their role in dendritic spine morphology
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Journal Article
Synaptic localisation of SRF coactivators, MKL1 and MKL2, and their role in dendritic spine morphology
2018
Overview
The megakaryoblastic leukaemia (MKL) family are serum response factor (SRF) coactivators, which are highly expressed in the brain. Accordingly, MKL plays important roles in dendritic morphology, neuronal migration, and brain development. Further, nucleotide substitutions in the
MKL
1 and
MKL
2 genes are found in patients with schizophrenia and autism spectrum disorder, respectively. Thus, studies on the precise synaptic localisation and function of MKL in neurons are warranted. In this study, we generated and tested new antibodies that specifically recognise endogenously expressed MKL1 and MKL2 proteins in neurons. Using these reagents, we biochemically and immunocytochemically show that MKL1 and MKL2 are localised at synapses. Furthermore, shRNA experiments revealed that postsynaptic deletion of
MKL1
or
MKL
2 reduced the percentage of mushroom- or stubby-type spines in cultured neurons. Taken together, our findings suggest that MKL1 and MKL2 are present at synapses and involved in dendritic spine maturation. This study may, at least in part, contribute to better understanding of the molecular mechanisms underlying MKL-mediated synaptic plasticity and neurological disorders.
Publisher
Nature Publishing Group UK,Nature Publishing Group,Nature Portfolio
Subject
/ 13/1
/ 13/106
/ 13/89
/ 82
/ 96/106
/ Autism
/ Dendritic Spines - metabolism
/ Humanities and Social Sciences
/ Humans
/ Leukemia
/ Neurons
/ Reagents
/ RNA, Small Interfering - genetics
/ RNA, Small Interfering - metabolism
/ Science
/ Spine
/ Synapses
/ Trans-Activators - metabolism
