IndraLab

Statements


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sparser
"Future work must determine how FMRP-BK channel interaction may contribute to alterations in excitatory-excitatory and/or excitatory-inhibitory connectivity observed in the hippocampus and cortex of FMR1 KO mice that has been shown to depend on pre-synaptic loss of FMRP as well (Hanson and Madison, xref ; Patel et al., xref )."

sparser
"They later showed that the underlying mechanism for this modulation likely includes a direct interaction of FMRP with the BK channel-modulating subunit β4 (Deng and Klyachko, xref )."

sparser
"Given the multitude of ion channels and mechanisms that mediate presynaptic FMRP actions, it remains unclear, however, to what extent FMRP-BK channel interactions contribute to synaptic and circuit defects in FXS."

reach
"FMRP can also directly bind to the BK channel’s pore-forming α subunit to modulate channel gating and increase BK currents ."

sparser
"The R138Q mutation also almost fully abolished the interaction of FMRP with the BK channel β4 subunit ( xref )."

sparser
"This finding provides further evidence for the role of FMRP-BK channel interactions in regulation of the AP properties and suggests that this translation-independent function of FMRP is linked to a specific subset of FXS phenotypes."

sparser
"More recent studies support the idea that the loss of FMRP-BK channel interactions contribute to FXS pathophysiology."

sparser
"These results suggest a model in which the effects of R138Q mutation are caused by disruption of FMRP’s protein-protein interactions, including FMRP-BK channel interactions, which are important in regulating neuronal excitability and glutamate release, while retaining translational regulation functions of FMRP."