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| http://dx.doi.org/10.1073/pnas.1802234115 | DOI Listing |
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Leishmania mexicana N-Acetyltransferease 10 Is Important for Polysome Formation and Cell Cycle Progression.
Mol Microbiol
January 2025
Laboratório de Biologia Molecular de Patógenos (LBMP), Departamento de Microbiologia, Imunologia e Parasitologia, Universidade Federal de São Paulo (Unifesp), São Paulo, Brazil.
Leishmania presents a complex life cycle that involves both invertebrate and vertebrate hosts. By regulating gene expression, protein synthesis, and metabolism, the parasite can adapt to various environmental conditions. This regulation occurs mainly at the post-transcriptional level and may involve epitranscriptomic modifications of RNAs.
View Article and Find Full Text PDFCorrelating Disordered Activation Domain Ensembles with Gene Expression Levels.
Biophys Rep (N Y)
January 2025
Department of Chemistry and Biochemistry, University of California Merced, Merced, 95343; Department of Chemistry, Syracuse University, Syracuse, 13244.
Transcription factor proteins bind to specific DNA promoter sequences and initiate gene transcription. These proteins often contain intrinsically disordered activation domains (ADs) that regulate their transcriptional activity. Like other disordered protein regions, ADs do not have a fixed three-dimensional structure and instead exist in an ensemble of conformations.
View Article and Find Full Text PDFAssociations between maternal plasma concentrations of corticotrophin releasing hormone and the placental transcriptome.
Placenta
December 2024
Seattle Children's Research Institute, Seattle WA, USA; University of Washington, Seattle WA, USA.
Introduction: The placenta produces corticotrophin releasing hormone (CRH), which rises exponentially in maternal plasma across pregnancy. CRH plays a functional role in fetal development, labor initiation, and the regulation of gestational length. We aimed to understand how maternal plasma CRH during pregnancy reflects placental physiology during parturition by characterizing placental transcriptomic signatures of maternal plasma CRH and comparing to transcriptomic signatures of gestational age at birth.
View Article and Find Full Text PDFAltered 3D genome reorganization mediates precocious myeloid differentiation of aged hematopoietic stem cells in inflammation.
Sci China Life Sci
December 2024
Clinical and Translational Research Center of Shanghai First Maternity & Infant Hospital, Frontier Science Center for Stem Cells, School of Life Sciences and Technology, Tongji University, Shanghai, 200092, China.
Inflammation is a driving force of hematopoietic stem cells (HSCs) aging, causing irreversible exhaustion of functional HSCs. However, the underlying mechanism of HSCs erosion by inflammatory insult remains poorly understood. Here, we find that transient LPS exposure primes aged HSCs to undergo accelerated differentiation at the expense of self-renewal, leading to depletion of HSCs.
View Article and Find Full Text PDFMulti-modal comparison of molecular programs driving nurse cell death and clearance in Drosophila melanogaster oogenesis.
PLoS Genet
January 2025
Department of Biology, Boston University, Boston Massachusetts, United States of America.
The death and clearance of nurse cells is a consequential milestone in Drosophila melanogaster oogenesis. In preparation for oviposition, the germline-derived nurse cells bequeath to the developing oocyte all their cytoplasmic contents and undergo programmed cell death. The death of the nurse cells is controlled non-autonomously and is precipitated by epithelial follicle cells of somatic origin acquiring a squamous morphology and acidifying the nurse cells externally.
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