Cited by 31Autism Spectrum Disorder ResearchGenetics and Neurodevelopmental DisordersChild Nutrition and Feeding Issues

IGF-1 treatment causes unique transcriptional response in neurons from individuals with idiopathic autism

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Linker, Sara B., Mendes, Ana P. D., Marchetto, Maria C.·2020·Molecular Autism

Abstract

BACKGROUND: Research evidence accumulated in the past years in both rodent and human models for autism spectrum disorders (ASD) have established insulin-like growth factor 1 (IGF-1) as one of the most promising ASD therapeutic interventions to date. ASD is phenotypically and etiologically heterogeneous, making it challenging to uncover the underlying genetic and cellular pathophysiology of the condition; and to efficiently design drugs with widespread clinical benefits. While IGF-1 effects have been comprehensively studied in the literature, how IGF-1 activity may lead to therapeutic recovery in the ASD context is still largely unknown. METHODS: In this study, we used a previously characterized neuronal population derived from induced pluripotent stem cells (iPSC) from neurotypical controls and idiopathic ASD individuals to study the transcriptional signature of acutely and chronically IGF-1-treated cells. RESULTS: We present a comprehensive list of differentially regulated genes and molecular interactions resulting from IGF-1 exposure in developing neurons from controls and ASD individuals. Our results indicate that IGF-1 treatment has a different impact on neurons from ASD patients compared to controls. Response to IGF-1 treatment in neurons derived from ASD patients was heterogeneous and correlated with IGF-1 receptor expression, indicating that IGF-1 response may have responder and non-responder distinctions across cohorts of ASD patients. Our results suggest that caution should be used when predicting the effect of IGF-1 treatment on ASD patients using neurotypical controls. Instead, IGF-1 response should be studied in the context of ASD patients' neural cells. LIMITATIONS: The limitation of our study is that our cohort of eight sporadic ASD individuals is comorbid with macrocephaly in childhood. Future studies will address weather downstream transcriptional response of IGF-1 is comparable in non-macrocephalic ASD cohorts. CONCLUSIONS: The results presented in this study provide an important resource for researchers in the ASD field and underscore the necessity of using ASD patient lines to explore ASD neuronal-specific responses to drugs such as IGF-1. This study further helps to identify candidate pathways and targets for effective clinical intervention and may help to inform clinical trials in the future.

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  1. [26]Marchetto MC, Belinson H, Tian Y, Freitas BC, Fu C, Vadodaria KC, et al. Altered proliferation and networks in neural cells derived from idiopathic autistic individuals. Mol Psychiatry. 2016. PMC5215991 27378147

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Authors
Linker, S. B., Mendes, A. P. D., & Marchetto, M. C.
Affiliations
Salk Institute for Biological Studies (US)
Corresponding author
Marchetto, Maria C.
Venue
Molecular Autism
Published
2020-06-26
Volume
11
Issue
1
Pages
55-55
ISSN
2040-2392 (ISSN-L)
OpenAlex
W3037010733
Cited by
31
References
42
Citations by year
2025: 5 · 2024: 5 · 2023: 4 · 2022: 6 · 2021: 9 · 2020: 2
FWCI
2.82
Type
journal article
Language
en
Open access
Locations
  • Molecular Autism (publishedVersion, cc-by)
  • PubMed Central (publishedVersion, cc-by)
  • PubMed (publishedVersion)
  • DOAJ (DOAJ: Directory of Open Access Journals) (submittedVersion, cc-by-sa)
Funders
National Institute of Mental Health (MH115426)
Topics
  • Life Sciences › Neuroscience › Cognitive Neuroscience › Autism Spectrum Disorder Research
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Genetics › Genetics and Neurodevelopmental Disorders
  • Health Sciences › Medicine › Psychiatry and Mental health › Child Nutrition and Feeding Issues
Keywords
insulin-like growth factor I, autism treatment, IGF-1 receptor, iPSC-derived neurons, differentially regulated genes, macrocephaly
MeSH terms
Autistic Disorder, Humans, Insulin-Like Growth Factor I, Neurons, Transcription, Genetic, Receptor, IGF Type 1, Gene Expression Profiling, Induced Pluripotent Stem Cells

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