» Articles » PMID: 38271337

A Plant Flavonol and Genetic Suppressors Rescue a Pathogenic Mutation Associated with Kinesin in Neurons

Overview
Specialty Science
Date 2024 Jan 25
PMID 38271337
Authors
Affiliations
Soon will be listed here.
Abstract

KIF1A, a microtubule-based motor protein responsible for axonal transport, is linked to a group of neurological disorders known as KIF1A-associated neurological disorder (KAND). Current therapeutic options for KAND are limited. Here, we introduced the clinically relevant KIF1A(R11Q) variant into the homolog UNC-104, resulting in uncoordinated animal behaviors. Through genetic suppressor screens, we identified intragenic mutations in UNC-104's motor domain that rescued synaptic vesicle localization and coordinated movement. We showed that two suppressor mutations partially recovered motor activity in vitro by counteracting the structural defect caused by R11Q at KIF1A's nucleotide-binding pocket. We found that supplementation with fisetin, a plant flavonol, improved KIF1A(R11Q) worms' movement and morphology. Notably, our biochemical and single-molecule assays revealed that fisetin directly restored the ATPase activity and processive movement of human KIF1A(R11Q) without affecting wild-type KIF1A. These findings suggest fisetin as a potential intervention for enhancing KIF1A(R11Q) activity and alleviating associated defects in KAND.

Citing Articles

Characterization of the disease-causing mechanism of KIF3B mutations from ciliopathy patients.

Adams J, Sawe C, Rogers S, Reid J, Dasari R, Engelke M Front Mol Biosci. 2024; 11:1327963.

PMID: 38665936 PMC: 11043552. DOI: 10.3389/fmolb.2024.1327963.


A plant flavonol and genetic suppressors rescue a pathogenic mutation associated with kinesin in neurons.

Chai Y, Li D, Gong W, Ke J, Tian D, Chen Z Proc Natl Acad Sci U S A. 2024; 121(5):e2311936121.

PMID: 38271337 PMC: 10835061. DOI: 10.1073/pnas.2311936121.

References
1.
Otsuka A, Jeyaprakash A, Garcia-Anoveros J, Tang L, Fisk G, Hartshorne T . The C. elegans unc-104 gene encodes a putative kinesin heavy chain-like protein. Neuron. 1991; 6(1):113-22. DOI: 10.1016/0896-6273(91)90126-k. View

2.
Sleigh J, Rossor A, Fellows A, Tosolini A, Schiavo G . Axonal transport and neurological disease. Nat Rev Neurol. 2019; 15(12):691-703. DOI: 10.1038/s41582-019-0257-2. View

3.
Boyle L, Rao L, Kaur S, Fan X, Mebane C, Hamm L . Genotype and defects in microtubule-based motility correlate with clinical severity in -associated neurological disorder. HGG Adv. 2021; 2(2). PMC: 8054982. DOI: 10.1016/j.xhgg.2021.100026. View

4.
Klebe S, Lossos A, Azzedine H, Mundwiller E, Sheffer R, Gaussen M . KIF1A missense mutations in SPG30, an autosomal recessive spastic paraplegia: distinct phenotypes according to the nature of the mutations. Eur J Hum Genet. 2012; 20(6):645-9. PMC: 3355258. DOI: 10.1038/ejhg.2011.261. View

5.
Cason S, Holzbaur E . Selective motor activation in organelle transport along axons. Nat Rev Mol Cell Biol. 2022; 23(11):699-714. DOI: 10.1038/s41580-022-00491-w. View