98%
921
2 minutes
20
Regulation of gene expression through enhancers is one of the major processes shaping the structure and function of the human brain during development. High-throughput assays have predicted thousands of enhancers involved in neurodevelopment, and confirming their activity through orthogonal functional assays is crucial. Here, we utilized Massively Parallel Reporter Assays (MPRAs) in stem cells and forebrain organoids to evaluate the activity of ~7,000 gene-linked enhancers previously identified in human fetal tissues and brain organoids. We used a Gaussian mixture model to evaluate the contribution of background noise in the measured activity signal to confirm the activity of ~35% of the tested enhancers, with most showing temporal-specific activity, suggesting their evolving role in neurodevelopment. The temporal specificity was further supported by the correlation of activity with gene expression. Our findings provide a valuable gene regulatory resource to the scientific community.
Download full-text PDF |
Source |
---|---|
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC10461976 | PMC |
http://dx.doi.org/10.1101/2023.08.14.553170 | DOI Listing |
Vox Sang
September 2025
Pathology and Clinical Governance, Australian Red Cross Lifeblood, Brisbane, Australia.
Background And Objectives: Two prior publications have identified a novel RHD variant in the Australian population with the pattern of single nucleotide variation (SNV) c.186G>T, c.410C>T, c.
View Article and Find Full Text PDFForensic Sci Int Synerg
December 2025
DNA Analysis Laboratory, Natural Sciences Research Institute, University of the Philippines Diliman, Quezon City 1101 Philippines.
Massively parallel sequencing (MPS) has caused a paradigm shift in forensic DNA analysis by enabling simultaneous examination of multiple genetic markers with higher resolution. Despite its growing importance, adoption in the 11 Southeast Asian countries remains limited. This paper reviews MPS implementation in forensic DNA laboratories across the region and discusses key adoption challenges.
View Article and Find Full Text PDFNat Genet
September 2025
Bioinformatics Interdepartmental Program, University of California, Los Angeles, CA, USA.
Gene expression is modulated jointly by transcriptional regulation and messenger RNA stability, yet the latter is often overlooked in studies on genetic variants. Here, leveraging metabolic labeling data (Bru/BruChase-seq) and a new computational pipeline, RNAtracker, we categorize genes as allele-specific RNA stability (asRS) or allele-specific RNA transcription events. We identify more than 5,000 asRS variants among 665 genes across a panel of 11 human cell lines.
View Article and Find Full Text PDFParallelization has revolutionized computing and DNA sequencing but remains largely unexploited in mass spectrometry (MS), which typically analyzes ions sequentially. We introduce a nature-inspired ion trap (MultiQ-IT) that enables massively parallel MS. The device comprises a cubic array of small quadrupoles forming multiple ion entry and exit ports, allowing >10⁹ ions to be confined and manipulated simultaneously.
View Article and Find Full Text PDFGenes in many bacteria are rich in purine nucleotides and poor in pyrimidines. We show that this purine preference is critical for gene expression because it prevents premature transcription termination in species that exhibit runaway transcription. In contrast to coupled transcription-translation , runaway RNA polymerases that outpace trailing ribosomes have exposed nascent RNA and are vulnerable to the termination factor Rho .
View Article and Find Full Text PDF