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Sex Affects Cognitive Outcomes in HIV-1 Tat Transgenic Mice: Role of CCR5.
ASN Neuro
January 2025
Department of Anatomy and Neurobiology, Virginia Commonwealth University, Richmond, Virginia, USA.
People living with HIV (PLWH) experience HIV-associated neurocognitive disorders (HAND), even though combination antiretroviral therapy (cART) suppresses HIV replication. HIV-1 transactivator of transcription (HIV-1 Tat) contributes to the development of HAND through neuroinflammatory and neurotoxic mechanisms. C-C chemokine 5 receptor (CCR5) is important in immune cell targeting and is a co-receptor for HIV viral entry into CD4+ cells.
View Article and Find Full Text PDFNovel Immune Response Evasion Strategy to Redose Adeno-associated Viral Vectors and Prolong Survival in Surfactant Protein-B Deficient Mice.
Am J Respir Cell Mol Biol
January 2025
Ottawa Hospital Research Institute & CHEO Research Institute, Pediatrics, Ottawa, Ontario, Canada.
Surfactant protein-B (SP-B) deficiency is a lethal neonatal respiratory disease with few therapeutic options. Gene therapy using adeno-associated viruses (AAV) to deliver human cDNA (AAV-hSPB) can improve survival in a mouse model of SP-B deficiency. However, the effect of this gene therapy wanes.
View Article and Find Full Text PDFThe androgen clock is an epigenetic predictor of long-term male hormone exposure.
Proc Natl Acad Sci U S A
January 2025
Department of Anatomy, University of Otago, Dunedin 9016, New Zealand.
Aging is a complex process characterized by biological decline and a wide range of molecular alterations to cells, including changes to DNA methylation. In this study, we used a male-specific epigenetic marker of aging to build an epigenetic predictor that measures long-term androgen exposure in sheep and mice (median absolute error of 4.3 and 1.
View Article and Find Full Text PDFCodon bias, nucleotide selection, and genome size predict in situ bacterial growth rate and transcription in rewetted soil.
Proc Natl Acad Sci U S A
January 2025
Physical and Life Sciences Directorate, Lawrence Livermore National Laboratory, Livermore, CA 94550.
In soils, the first rain after a prolonged dry period represents a major pulse event impacting soil microbial community function, yet we lack a full understanding of the genomic traits associated with the microbial response to rewetting. Genomic traits such as codon usage bias and genome size have been linked to bacterial growth in soils-however, often through measurements in culture. Here, we used metagenome-assembled genomes (MAGs) with O-water stable isotope probing and metatranscriptomics to track genomic traits associated with growth and transcription of soil microorganisms over one week following rewetting of a grassland soil.
View Article and Find Full Text PDFA divergent two-domain structure of the anti-Müllerian hormone prodomain.
Proc Natl Acad Sci U S A
January 2025
Department of Molecular & Cellular Biosciences, University of Cincinnati, Cincinnati, OH 45267.
TGFβ family ligands are synthesized as precursors consisting of an N-terminal prodomain and C-terminal growth factor (GF) signaling domain. After proteolytic processing, the prodomain typically remains noncovalently associated with the GF, sometimes forming a high-affinity latent procomplex that requires activation. For the TGFβ family ligand anti-Müllerian hormone (AMH), the prodomain maintains a high-affinity interaction with its GF that does not render it latent.
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