LRRK2 expression in idiopathic and G2019S positive Parkinson's disease subjects: a morphological and quantitative study
Identifieur interne : 000274 ( Main/Exploration ); précédent : 000273; suivant : 000275LRRK2 expression in idiopathic and G2019S positive Parkinson's disease subjects: a morphological and quantitative study
Auteurs : S. Sharma [Royaume-Uni] ; R. Bandopadhyay ; T. Lashley ; A. E. M. Renton [Royaume-Uni] ; A. E. Kingsbury ; R. Kumaran ; C. Kallis ; C. Vilari O-Güell ; S. S. O'Sullivan ; Andrew Lees (neurologue) [Royaume-Uni] ; T. Revesz ; N. W. Wood ; J. L. HoltonSource :
- Neuropathology and Applied Neurobiology [ 0305-1846 ] ; 2011-12.
English descriptors
Abstract
S. Sharma, R. Bandopadhyay, T. Lashley, A. E. M. Renton, A. E. Kingsbury, R. Kumaran, C. Kallis, C. Vilariño‐Güell, S. S. O'Sullivan, A. J. Lees, T. Revesz, N. W. Wood and J. L. Holton (2011) Neuropathology and Applied Neurobiology37, 777–790 LRRK2 expression in idiopathic and G2019S positive Parkinson's disease subjects: a morphological and quantitative study Aims: Mutations in the gene encoding leucine‐rich repeat kinase‐2 (LRRK2) have been established as a common genetic cause of Parkinson's disease (PD). The distribution of LRRK2 mRNA and protein in the human brain has previously been described, although it has not been reported in PD cases with the common LRRK2 G2019S mutation. Methods: To further elucidate the role of LRRK2 in PD, we determined the localization of LRRK2 mRNA and protein in post‐mortem brain tissue from control, idiopathic PD (IPD) and G2019S positive PD cases. Results: Widespread neuronal expression of LRRK2 mRNA and protein was recorded and no difference was observed in the morphological localization of LRRK2 mRNA or protein between control, IPD and G2019S positive PD cases. Using quantitative real‐time polymerase chain reaction, we demonstrated that there is no regional variation in LRRK2 mRNA in normal human brain, but we have identified differential expression of LRRK2 mRNA with significant reductions recorded in limbic and neocortical regions of IPD cases compared with controls. Semi‐quantitative analysis of LRRK2 immunohistochemical staining demonstrated regional variation in staining intensity, with weak LRRK2 immunoreactivity consistently recorded in the striatum and substantia nigra. No clear differences were identified in LRRK2 immunoreactivity between control, IPD and G2019S positive PD cases. LRRK2 protein was identified in a small proportion of Lewy bodies. Conclusions: Our data suggest that widespread dysregulation of LRRK2 mRNA expression may contribute to the pathogenesis of IPD.
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DOI: 10.1111/j.1365-2990.2011.01187.x
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Holton</name><affiliation><wicri:noCountry code="subField">UCL</wicri:noCountry></affiliation></author></analytic><monogr></monogr><series><title level="j">Neuropathology and Applied Neurobiology</title><idno type="ISSN">0305-1846</idno><idno type="eISSN">1365-2990</idno><imprint><publisher>Blackwell Publishing Ltd</publisher><pubPlace>Oxford, UK</pubPlace><date type="published" when="2011-12">2011-12</date><biblScope unit="volume">37</biblScope><biblScope unit="issue">7</biblScope><biblScope unit="page" from="777">777</biblScope><biblScope unit="page" to="790">790</biblScope></imprint><idno type="ISSN">0305-1846</idno></series><idno type="istex">F7C0B09C4EA0A2C84EB135FFFCD43E70853BC10F</idno><idno type="DOI">10.1111/j.1365-2990.2011.01187.x</idno><idno type="ArticleID">NAN1187</idno></biblStruct></sourceDesc><seriesStmt><idno type="ISSN">0305-1846</idno></seriesStmt></fileDesc><profileDesc><textClass><keywords scheme="KwdEn" xml:lang="en"><term>G2019S mutation</term><term>LRRK2</term><term>LRRK2 mRNA</term><term>LRRK2 protein</term><term>Lewy bodies</term><term>Parkinson's disease</term></keywords></textClass><langUsage><language ident="en">en</language></langUsage></profileDesc></teiHeader><front><div type="abstract" xml:lang="en">S. Sharma, R. Bandopadhyay, T. Lashley, A. E. M. Renton, A. E. Kingsbury, R. Kumaran, C. Kallis, C. Vilariño‐Güell, S. S. O'Sullivan, A. J. Lees, T. Revesz, N. W. Wood and J. L. Holton (2011) Neuropathology and Applied Neurobiology37, 777–790 LRRK2 expression in idiopathic and G2019S positive Parkinson's disease subjects: a morphological and quantitative study Aims: Mutations in the gene encoding leucine‐rich repeat kinase‐2 (LRRK2) have been established as a common genetic cause of Parkinson's disease (PD). The distribution of LRRK2 mRNA and protein in the human brain has previously been described, although it has not been reported in PD cases with the common LRRK2 G2019S mutation. Methods: To further elucidate the role of LRRK2 in PD, we determined the localization of LRRK2 mRNA and protein in post‐mortem brain tissue from control, idiopathic PD (IPD) and G2019S positive PD cases. Results: Widespread neuronal expression of LRRK2 mRNA and protein was recorded and no difference was observed in the morphological localization of LRRK2 mRNA or protein between control, IPD and G2019S positive PD cases. Using quantitative real‐time polymerase chain reaction, we demonstrated that there is no regional variation in LRRK2 mRNA in normal human brain, but we have identified differential expression of LRRK2 mRNA with significant reductions recorded in limbic and neocortical regions of IPD cases compared with controls. Semi‐quantitative analysis of LRRK2 immunohistochemical staining demonstrated regional variation in staining intensity, with weak LRRK2 immunoreactivity consistently recorded in the striatum and substantia nigra. No clear differences were identified in LRRK2 immunoreactivity between control, IPD and G2019S positive PD cases. LRRK2 protein was identified in a small proportion of Lewy bodies. Conclusions: Our data suggest that widespread dysregulation of LRRK2 mRNA expression may contribute to the pathogenesis of IPD.</div></front></TEI><affiliations><list><country><li>Royaume-Uni</li></country><region><li>Angleterre</li><li>Grand Londres</li></region><settlement><li>Londres</li></settlement><orgName><li>National Hospital for Neurology and Neurosurgery</li></orgName></list><tree><noCountry><name sortKey="Bandopadhyay, R" sort="Bandopadhyay, R" uniqKey="Bandopadhyay R" first="R." last="Bandopadhyay">R. Bandopadhyay</name><name sortKey="Holton, J L" sort="Holton, J L" uniqKey="Holton J" first="J. L." last="Holton">J. L. Holton</name><name sortKey="Kallis, C" sort="Kallis, C" uniqKey="Kallis C" first="C." last="Kallis">C. Kallis</name><name sortKey="Kingsbury, A E" sort="Kingsbury, A E" uniqKey="Kingsbury A" first="A. E." last="Kingsbury">A. E. Kingsbury</name><name sortKey="Kumaran, R" sort="Kumaran, R" uniqKey="Kumaran R" first="R." last="Kumaran">R. Kumaran</name><name sortKey="Lashley, T" sort="Lashley, T" uniqKey="Lashley T" first="T." last="Lashley">T. Lashley</name><name sortKey="O Sullivan, S S" sort="O Sullivan, S S" uniqKey="O Sullivan S" first="S. S." last="O'Sullivan">S. S. O'Sullivan</name><name sortKey="Revesz, T" sort="Revesz, T" uniqKey="Revesz T" first="T." last="Revesz">T. Revesz</name><name sortKey="Vilari O Ell, C" sort="Vilari O Ell, C" uniqKey="Vilari O Ell C" first="C." last="Vilari O-Güell">C. Vilari O-Güell</name><name sortKey="Wood, N W" sort="Wood, N W" uniqKey="Wood N" first="N. W." last="Wood">N. W. Wood</name></noCountry><country name="Royaume-Uni"><region name="Angleterre"><name sortKey="Sharma, S" sort="Sharma, S" uniqKey="Sharma S" first="S." last="Sharma">S. Sharma</name></region><name sortKey="Lees, A J" sort="Lees, A J" uniqKey="Lees A" first="A. J." last="Lees">Andrew Lees (neurologue)</name><name sortKey="Renton, A E M" sort="Renton, A E M" uniqKey="Renton A" first="A. E. M." last="Renton">A. E. 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