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Rapid Microwave Fixation of the Brain Reveals Seasonal Changes in the Phosphoproteome of Hibernating Thirteen-Lined Ground Squirrels.
ACS Chem Neurosci
January 2025
Department of Chemistry, University of Nebraska-Lincoln, Lincoln, Nebraska 68588, United States.
Hibernating mammals such as the thirteen-lined ground squirrel () experience significant reductions in oxidative metabolism and body temperature when entering a state known as torpor. Animals entering or exiting torpor do not experience permanent loss of brain function or other injuries, and the processes that enable such neuroprotection are not well understood. To gain insight into changes in protein function that occur in the dramatically different physiological states of hibernation, we performed quantitative phosphoproteomics experiments on thirteen-lined ground squirrels that are summer-active, winter-torpid, and spring-active.
View Article and Find Full Text PDFThe applications and mechanisms of L. in the management of different wounds and UV-irradiated skin.
Front Pharmacol
January 2025
Wound Clinic, Department of General Surgery, Shidong Hospital Affiliated to University of Shanghai for Science and Technology, Shanghai, China.
Chronic wounds, especially non-healing wounds, significantly affect patients' quality of life and raise the costs of therapy. Wound healing is a complicated process involving interdependent stages, which may be impaired and delayed by infections with multi-drug resistant pathogens. Current medical strategies for wound healing, especially the treatment of non-healing wounds, exert limited therapeutic effects, thus become a dramatic challenge for modern medicine.
View Article and Find Full Text PDFTransformation of brain myeloid cell populations by SIV in rhesus macaques revealed by multiomics.
Commun Biol
January 2025
Department of Neurological Sciences, University of Nebraska Medical Center, Omaha, NE, USA.
The primary immune constituents in the brain, microglia and macrophages, are the target for HIV in people and simian immunodeficiency virus (SIV) in nonhuman primates. This infection can lead to neurological dysfunction, known as HIV-associated neurocognitive disorder (HAND). Given the gaps in our knowledge on how these cells respond in vivo to CNS infection, we perform single-cell multiomic sequencing, including gene expression and ATAC-seq, on myeloid cells from the brains of rhesus macaques with SIV-induced encephalitis (SIVE) as well as uninfected controls.
View Article and Find Full Text PDFWDR26 depletion alters chromatin accessibility and gene expression profiles in mammalian cells.
Genomics
January 2025
Robarts Research Institute, University of Western Ontario, London, Canada; Department of Biochemistry, University of Western Ontario, London, Canada; Department of Oncology, University of Western Ontario, London, Canada. Electronic address:
WD-repeat containing protein 26 (WDR26) is an essential component of the CTLH E3 ligase complex. Mutations in WDR26 lead to Skraban-Deardorff, an intellectual disability syndrome with clinical features resembling other disorders arising from defects in transcriptional regulation and chromatin structure. However, the role of WDR26 and its associated CTLH complex in regulating chromatin or transcription has not been elucidated.
View Article and Find Full Text PDFSpatiotemporal morphodynamics of an ephemeral Himalayan River impacted by sand mining: A process-response framework.
Sci Total Environ
January 2025
Department of Earth Sciences, Indian Institute of Technology Kanpur, Kanpur 208016, India. Electronic address:
In-channel sediment mining significantly disrupts reach-scale sediment connectivity and channel geometry, causing immediate and intense geomorphological responses. River systems perturbed by anthropogenic stress, like sand and gravel mining, tend to respond within a shorter timescale, making the study of feedback mechanisms important. 'Sensitive' rivers display dramatic change via a positive feedback mechanism, exacerbating the change in the system.
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