4.6 Review

The Role of Preclinical Models in Creatine Transporter Deficiency: Neurobiological Mechanisms, Biomarkers and Therapeutic Development

期刊

GENES
卷 12, 期 8, 页码 -

出版社

MDPI
DOI: 10.3390/genes12081123

关键词

metabolism; metabolic disorders; intellectual disability; autism; epilepsy; creatine; creatine transporter deficiency; animal models

资金

  1. Italian Ministry of Health [GR-2017-02364378]
  2. Telethon [GGP19177]
  3. Jerome Lejeune Foundation [1822]

向作者/读者索取更多资源

CTD is an X-linked metabolic disorder caused by mutations in the SLC6A8 gene, leading to intellectual disability, autistic behavior, and epilepsy. There is no effective treatment for CTD, making research on novel intervention strategies a major scientific challenge. Animal models are crucial for studying the disease mechanisms and developing therapeutics, with rodent models showing promise in recapitulating human CTD phenotypes.
Creatine (Cr) Transporter Deficiency (CTD) is an X-linked metabolic disorder, mostly caused by missense mutations in the SLC6A8 gene and presenting with intellectual disability, autistic behavior, and epilepsy. There is no effective treatment for CTD and patients need lifelong assistance. Thus, the research of novel intervention strategies is a major scientific challenge. Animal models are an excellent tool to dissect the disease pathogenetic mechanisms and drive the preclinical development of therapeutics. This review illustrates the current knowledge about Cr metabolism and CTD clinical aspects, with a focus on mainstay diagnostic and therapeutic options. Then, we discuss the rodent models of CTD characterized in the last decade, comparing the phenotypes expressed within clinically relevant domains and the timeline of symptom development. This analysis highlights that animals with the ubiquitous deletion/mutation of SLC6A8 genes well recapitulate the early onset and the complex pathological phenotype of the human condition. Thus, they should represent the preferred model for preclinical efficacy studies. On the other hand, brain- and cell-specific conditional mutants are ideal for understanding the basis of CTD at a cellular and molecular level. Finally, we explain how CTD models might provide novel insight about the pathogenesis of other disorders, including cancer.

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