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Relationship Between Sex Biases in Gene Expression and Sex Biases in Autism and Alzheimer's Disease

Overview
Journal Biol Sex Differ
Publisher Biomed Central
Specialties Biology
Physiology
Date 2024 Jun 6
PMID 38844994
Authors
Affiliations
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Abstract

Background: Sex differences in the brain may play an important role in sex-differential prevalence of neuropsychiatric conditions.

Methods: In order to understand the transcriptional basis of sex differences, we analyzed multiple, large-scale, human postmortem brain RNA-Seq datasets using both within-region and pan-regional frameworks.

Results: We find evidence of sex-biased transcription in many autosomal genes, some of which provide evidence for pathways and cell population differences between chromosomally male and female individuals. These analyses also highlight regional differences in the extent of sex-differential gene expression. We observe an increase in specific neuronal transcripts in male brains and an increase in immune and glial function-related transcripts in female brains. Integration with single-nucleus data suggests this corresponds to sex differences in cellular states rather than cell abundance. Integration with case-control gene expression studies suggests a female molecular predisposition towards Alzheimer's disease, a female-biased disease. Autism, a male-biased diagnosis, does not exhibit a male predisposition pattern in our analysis.

Conclusion: Overall, these analyses highlight mechanisms by which sex differences may interact with sex-biased conditions in the brain. Furthermore, we provide region-specific analyses of sex differences in brain gene expression to enable additional studies at the interface of gene expression and diagnostic differences.

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References
1.
Kissel L, Werling D . Neural Transcriptomic Analysis of Sex Differences in Autism Spectrum Disorder: Current Insights and Future Directions. Biol Psychiatry. 2021; 91(1):53-60. DOI: 10.1016/j.biopsych.2020.11.023. View

2.
Labonte B, Engmann O, Purushothaman I, Menard C, Wang J, Tan C . Sex-specific transcriptional signatures in human depression. Nat Med. 2017; 23(9):1102-1111. PMC: 5734943. DOI: 10.1038/nm.4386. View

3.
Trabzuni D, Ramasamy A, Imran S, Walker R, Smith C, Weale M . Widespread sex differences in gene expression and splicing in the adult human brain. Nat Commun. 2013; 4:2771. PMC: 3868224. DOI: 10.1038/ncomms3771. View

4.
Lopes-Ramos C, Chen C, Kuijjer M, Paulson J, Sonawane A, Fagny M . Sex Differences in Gene Expression and Regulatory Networks across 29 Human Tissues. Cell Rep. 2020; 31(12):107795. PMC: 7898458. DOI: 10.1016/j.celrep.2020.107795. View

5.
Fish E . The X-files in immunity: sex-based differences predispose immune responses. Nat Rev Immunol. 2008; 8(9):737-44. PMC: 7097214. DOI: 10.1038/nri2394. View