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Article: Autism‐associated PTEN missense mutation leads to enhanced nuclear localization and neurite outgrowth in an induced pluripotent stem cell line

TitleAutism‐associated PTEN missense mutation leads to enhanced nuclear localization and neurite outgrowth in an induced pluripotent stem cell line
Authors
Keywordsautism spectrum disorders
macrocephaly
neurodevelopmental disorders
PTEN
PTEN hamartoma tumor syndrome
Issue Date2020
PublisherWiley-Blackwell Publishing Ltd.. The Journal's web site is located at http://onlinelibrary.wiley.com/journal/10.1111/(ISSN)1742-4658
Citation
The FEBS Journal, 2020, v. 287 n. 22, p. 4848-4861 How to Cite?
AbstractGermline mutation in the PTEN gene is the genetic basis of PTEN hamartoma tumor syndrome with the affected individuals harboring features of autism spectrum disorders. Characterizing a panel of 14 autism‐associated PTEN missense mutations revealed reduced protein stability, catalytic activity, and subcellular distribution. Nine out of 14 (64%) PTEN missense mutants had reduced protein expression with most mutations confined to the C2 domain. Selected mutants displayed enhanced polyubiquitination and shortened protein half‐life, but that did not appear to involve the polyubiquitination sites at lysine residues at codon 13 or 289. Analyzing their intrinsic lipid phosphatase activities revealed that 78% (11 out of 14) of these mutants had twofold to 10‐fold reduction in catalytic activity toward phosphatidylinositol phosphate substrates. Analyzing the subcellular localization of the PTEN missense mutants showed that 64% (nine out of 14) had altered nuclear‐to‐cytosol ratios with four mutants (G44D, H123Q, E157G, and D326N) showing greater nuclear localization. The E157G mutant was knocked‐in to an induced pluripotent stem cell line and recapitulated a similar nuclear targeting preference. Furthermore, iPSCs expressing the E157G mutant were more proliferative at the neural progenitor cell stage but exhibited more extensive dendritic outgrowth. In summary, the combination of biological changes in PTEN is expected to contribute to the behavioral and cellular features of this neurodevelopmental disorder.
Persistent Identifierhttp://hdl.handle.net/10722/289595
ISSN
2023 Impact Factor: 5.5
2023 SCImago Journal Rankings: 2.003
PubMed Central ID
ISI Accession Number ID

 

DC FieldValueLanguage
dc.contributor.authorWong, CW-
dc.contributor.authorWang, Y-
dc.contributor.authorLiu, T-
dc.contributor.authorLi, L-
dc.contributor.authorCheung, SKK-
dc.contributor.authorOr, PM-
dc.contributor.authorCheng, AS-
dc.contributor.authorChoy, KW-
dc.contributor.authorBurbach, JPH-
dc.contributor.authorBo, F-
dc.contributor.authorChang, RCC-
dc.contributor.authorChan, AM-
dc.date.accessioned2020-10-22T08:14:50Z-
dc.date.available2020-10-22T08:14:50Z-
dc.date.issued2020-
dc.identifier.citationThe FEBS Journal, 2020, v. 287 n. 22, p. 4848-4861-
dc.identifier.issn1742-464X-
dc.identifier.urihttp://hdl.handle.net/10722/289595-
dc.description.abstractGermline mutation in the PTEN gene is the genetic basis of PTEN hamartoma tumor syndrome with the affected individuals harboring features of autism spectrum disorders. Characterizing a panel of 14 autism‐associated PTEN missense mutations revealed reduced protein stability, catalytic activity, and subcellular distribution. Nine out of 14 (64%) PTEN missense mutants had reduced protein expression with most mutations confined to the C2 domain. Selected mutants displayed enhanced polyubiquitination and shortened protein half‐life, but that did not appear to involve the polyubiquitination sites at lysine residues at codon 13 or 289. Analyzing their intrinsic lipid phosphatase activities revealed that 78% (11 out of 14) of these mutants had twofold to 10‐fold reduction in catalytic activity toward phosphatidylinositol phosphate substrates. Analyzing the subcellular localization of the PTEN missense mutants showed that 64% (nine out of 14) had altered nuclear‐to‐cytosol ratios with four mutants (G44D, H123Q, E157G, and D326N) showing greater nuclear localization. The E157G mutant was knocked‐in to an induced pluripotent stem cell line and recapitulated a similar nuclear targeting preference. Furthermore, iPSCs expressing the E157G mutant were more proliferative at the neural progenitor cell stage but exhibited more extensive dendritic outgrowth. In summary, the combination of biological changes in PTEN is expected to contribute to the behavioral and cellular features of this neurodevelopmental disorder.-
dc.languageeng-
dc.publisherWiley-Blackwell Publishing Ltd.. The Journal's web site is located at http://onlinelibrary.wiley.com/journal/10.1111/(ISSN)1742-4658-
dc.relation.ispartofThe FEBS Journal-
dc.rightsThis work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.-
dc.subjectautism spectrum disorders-
dc.subjectmacrocephaly-
dc.subjectneurodevelopmental disorders-
dc.subjectPTEN-
dc.subjectPTEN hamartoma tumor syndrome-
dc.titleAutism‐associated PTEN missense mutation leads to enhanced nuclear localization and neurite outgrowth in an induced pluripotent stem cell line-
dc.typeArticle-
dc.identifier.emailChang, RCC: rccchang@hku.hk-
dc.identifier.authorityChang, RCC=rp00470-
dc.description.naturepostprint-
dc.identifier.doi10.1111/febs.15287-
dc.identifier.pmid32150788-
dc.identifier.pmcidPMC7754348-
dc.identifier.scopuseid_2-s2.0-85082338681-
dc.identifier.hkuros317371-
dc.identifier.volume287-
dc.identifier.issue22-
dc.identifier.spage4848-
dc.identifier.epage4861-
dc.identifier.isiWOS:000521604600001-
dc.publisher.placeUnited Kingdom-
dc.identifier.issnl1742-464X-

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