Human Brain Age Prediction Models: Transcriptome Profiling | Aging-US



March 15, 2024

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  • Aging-US published this research paper as the cover for Volume 16, Issue 5, entitled, "Genome-wide transcriptome profiling and development of age prediction models in the human brain" by Joseph A. Zarrella and Amy Tsurumi from the Department of Health Policy and Management, Harvard T.H. Chan School of Public Health, Boston, MA; Department of Surgery, Massachusetts General Hospital and Harvard Medical School, Boston, MA; Shriner's Hospitals for Children-Boston, Boston, MA. DOI - Corresponding author - Amy Tsurumi - Abstract Aging-related transcriptome changes in various regions of the healthy human brain have been explored in previous works, however, a study to develop prediction models for age based on the expression levels of specific panels of transcripts is lacking. Moreover, studies that have assessed sexually dimorphic gene activities in the aging brain have reported discrepant results, suggesting that additional studies would be advantageous. The prefrontal cortex (PFC) region was previously shown to have a particularly large number of significant transcriptome alterations during healthy aging in a study that compared different regions in the human brain. We harmonized neuropathologically normal PFC transcriptome datasets obtained from the Gene Expression Omnibus (GEO) repository, ranging in age from 21 to 105 years, and found a large number of differentially regulated transcripts in the old and elderly, compared to young samples overall, and compared female and male-specific expression alterations. We assessed the genes that were associated with age by employing ontology, pathway, and network analyses. Furthermore, we applied various established (least absolute shrinkage and selection operator (Lasso) and Elastic Net (EN)) and recent (eXtreme Gradient Boosting (XGBoost) and Light Gradient Boosting Machine (LightGBM)) machine learning algorithms to develop accurate prediction models for chronological age and validated them. Studies to further validate these models in other large populations and molecular studies to elucidate the potential mechanisms by which the transcripts identified may be related to aging phenotypes would be advantageous. Sign up for free Altmetric alerts about this article - Subscribe for free publication alerts from Aging - Keywords - aging, machine learning, prediction model, biomarker, transcriptome About Aging-US Launched in 2009, Aging-US publishes papers of general interest and biological significance in all fields of aging research and age-related diseases, including cancer—and now, with a special focus on COVID-19 vulnerability as an age-dependent syndrome. Topics in Aging-US go beyond traditional gerontology, including, but not limited to, cellular and molecular biology, human age-related diseases, pathology in model organisms, signal transduction pathways (e.g., p53, sirtuins, and PI-3K/AKT/mTOR, among others), and approaches to modulating these signaling pathways. Please visit our website at​​ and connect with us: Facebook - X - Instagram - YouTube - LinkedIn - Pinterest - Spotify - Media Contact 18009220957 MEDIA@IMPACTJOURNALS.COM


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