A new rat model of creatine transporter deficiency reveals behavioral disorder and altered brain metabolism

Abstract Creatine is an organic compound used as fast phosphate energy buffer to recycle ATP, important in tissues with high energy demand such as muscle or brain. Creatine is taken from the diet or endogenously synthetized by the enzymes AGAT and GAMT, and specifically taken up by the transporter S...

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Autores principales: Lara Duran-Trio, Gabriella Fernandes-Pires, Dunja Simicic, Jocelyn Grosse, Clothilde Roux-Petronelli, Stephen J. Bruce, Pierre-Alain Binz, Carmen Sandi, Cristina Cudalbu, Olivier Braissant
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Publicado: Nature Portfolio 2021
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spelling oai:doaj.org-article:947e106bf90e4b49b7a6b29e87d3bc282021-12-02T14:01:32ZA new rat model of creatine transporter deficiency reveals behavioral disorder and altered brain metabolism10.1038/s41598-020-80824-x2045-2322https://doaj.org/article/947e106bf90e4b49b7a6b29e87d3bc282021-01-01T00:00:00Zhttps://doi.org/10.1038/s41598-020-80824-xhttps://doaj.org/toc/2045-2322Abstract Creatine is an organic compound used as fast phosphate energy buffer to recycle ATP, important in tissues with high energy demand such as muscle or brain. Creatine is taken from the diet or endogenously synthetized by the enzymes AGAT and GAMT, and specifically taken up by the transporter SLC6A8. Deficit in the endogenous synthesis or in the transport leads to Cerebral Creatine Deficiency Syndromes (CCDS). CCDS are characterized by brain creatine deficiency, intellectual disability with severe speech delay, behavioral troubles such as attention deficits and/or autistic features, and epilepsy. Among CCDS, the X-linked creatine transporter deficiency (CTD) is the most prevalent with no efficient treatment so far. Different mouse models of CTD were generated by doing long deletions in the Slc6a8 gene showing reduced brain creatine and cognitive deficiencies or impaired motor function. We present a new knock-in (KI) rat model of CTD holding an identical point mutation found in patients with reported lack of transporter activity. KI males showed brain creatine deficiency, increased urinary creatine/creatinine ratio, cognitive deficits and autistic-like traits. The Slc6a8 Y389C KI rat fairly enriches the spectrum of CTD models and provides new data about the pathology, being the first animal model of CTD carrying a point mutation.Lara Duran-TrioGabriella Fernandes-PiresDunja SimicicJocelyn GrosseClothilde Roux-PetronelliStephen J. BrucePierre-Alain BinzCarmen SandiCristina CudalbuOlivier BraissantNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 11, Iss 1, Pp 1-13 (2021)
institution DOAJ
collection DOAJ
language EN
topic Medicine
R
Science
Q
spellingShingle Medicine
R
Science
Q
Lara Duran-Trio
Gabriella Fernandes-Pires
Dunja Simicic
Jocelyn Grosse
Clothilde Roux-Petronelli
Stephen J. Bruce
Pierre-Alain Binz
Carmen Sandi
Cristina Cudalbu
Olivier Braissant
A new rat model of creatine transporter deficiency reveals behavioral disorder and altered brain metabolism
description Abstract Creatine is an organic compound used as fast phosphate energy buffer to recycle ATP, important in tissues with high energy demand such as muscle or brain. Creatine is taken from the diet or endogenously synthetized by the enzymes AGAT and GAMT, and specifically taken up by the transporter SLC6A8. Deficit in the endogenous synthesis or in the transport leads to Cerebral Creatine Deficiency Syndromes (CCDS). CCDS are characterized by brain creatine deficiency, intellectual disability with severe speech delay, behavioral troubles such as attention deficits and/or autistic features, and epilepsy. Among CCDS, the X-linked creatine transporter deficiency (CTD) is the most prevalent with no efficient treatment so far. Different mouse models of CTD were generated by doing long deletions in the Slc6a8 gene showing reduced brain creatine and cognitive deficiencies or impaired motor function. We present a new knock-in (KI) rat model of CTD holding an identical point mutation found in patients with reported lack of transporter activity. KI males showed brain creatine deficiency, increased urinary creatine/creatinine ratio, cognitive deficits and autistic-like traits. The Slc6a8 Y389C KI rat fairly enriches the spectrum of CTD models and provides new data about the pathology, being the first animal model of CTD carrying a point mutation.
format article
author Lara Duran-Trio
Gabriella Fernandes-Pires
Dunja Simicic
Jocelyn Grosse
Clothilde Roux-Petronelli
Stephen J. Bruce
Pierre-Alain Binz
Carmen Sandi
Cristina Cudalbu
Olivier Braissant
author_facet Lara Duran-Trio
Gabriella Fernandes-Pires
Dunja Simicic
Jocelyn Grosse
Clothilde Roux-Petronelli
Stephen J. Bruce
Pierre-Alain Binz
Carmen Sandi
Cristina Cudalbu
Olivier Braissant
author_sort Lara Duran-Trio
title A new rat model of creatine transporter deficiency reveals behavioral disorder and altered brain metabolism
title_short A new rat model of creatine transporter deficiency reveals behavioral disorder and altered brain metabolism
title_full A new rat model of creatine transporter deficiency reveals behavioral disorder and altered brain metabolism
title_fullStr A new rat model of creatine transporter deficiency reveals behavioral disorder and altered brain metabolism
title_full_unstemmed A new rat model of creatine transporter deficiency reveals behavioral disorder and altered brain metabolism
title_sort new rat model of creatine transporter deficiency reveals behavioral disorder and altered brain metabolism
publisher Nature Portfolio
publishDate 2021
url https://doaj.org/article/947e106bf90e4b49b7a6b29e87d3bc28
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