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| http://dx.doi.org/10.24875/ACM.20000152 | DOI Listing |
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Structural basis of 5' splice site recognition by the minor spliceosome.
Mol Cell
January 2025
European Molecular Biology Laboratory (EMBL), EMBL Grenoble, 71 Avenue des Martyrs, 38042 Grenoble, France. Electronic address:
The minor spliceosome catalyzes excision of U12-dependent introns from precursors of eukaryotic messenger RNAs (pre-mRNAs). This process is critical for many cellular functions, but the underlying molecular mechanisms remain elusive. Here, we report a cryoelectron microscopy (cryo-EM) reconstruction of the 13-subunit human U11 small nuclear ribonucleoprotein particle (snRNP) complex in apo and substrate-bound forms, revealing the architecture of the U11 small nuclear RNA (snRNA), five minor spliceosome-specific factors, and the mechanism of the U12-type 5' splice site (5'SS) recognition.
View Article and Find Full Text PDFEffect of physical exercise on white matter microstructure in chemotherapy-treated breast cancer patients: a randomized controlled trial (PAM study).
Brain Imaging Behav
January 2025
Julius Center for Health Sciences and Primary Care, University Medical Center Utrecht, Utrecht University, Utrecht, The Netherlands.
Physical exercise is a promising intervention to improve brain white matter integrity. In the PAM study, exercise intervention effects on white matter integrity were investigated in breast cancer patients. Chemotherapy-treated breast cancer patients with cognitive problems were randomized 2-4 years post-diagnosis to an exercise (n = 91) or control group (n = 90).
View Article and Find Full Text PDFUse of Practices to Reduce of Sudden Unexpected Infant Death among Caregivers of Opioid Exposed Newborns.
J Addict Med
December 2024
From the Department of Pediatrics, UMass Chan School of Medicine, Worcester, MA (MGP, AE); Slone Epidemiology Center, Boston University School of Medicine, Boston, MA (FR, CP, SK, MC); Divisions of General Academic Pediatrics and Newborn Medicine, Mass General for Children, Boston, MA (DMS); Department of Pediatrics, Washington University School of Medicine, St Louis, MO (BC, HF, EC); Department of Pediatrics, UMass Chan Medical School-Baystate, Worcester, MA (KH); Department of Biostatistics, Boston University School of Public Health, Boston, MA (TH); and Department of Pediatrics, Boston Medical Center, Boston, MA (EMW).
Objectives: Sudden unexpected infant death (SUID) occurs disproportionately among opioid exposed newborns (OENs) compared to those unexposed. The extent that primary caregivers of OENs adhere to SUID-reducing infant care practices is unknown. We examined rates of SUID-reducing practices (smoking cessation, breastfeeding, and safe sleep [supine sleep, room-sharing not bed-sharing, nonuse of soft bedding or objects]) in a pilot sample of caregivers of OENs.
View Article and Find Full Text PDFReconstitution of human DNA licensing and the structural and functional analysis of key intermediates.
Nat Commun
January 2025
DNA Replication Group, Institute of Clinical Sciences, Faculty of Medicine, Imperial College London, London, UK.
Human DNA licensing initiates replication fork assembly and DNA replication. This reaction promotes the loading of the hMCM2-7 complex on DNA, which represents the core of the replicative helicase that unwinds DNA during S-phase. Here, we report the reconstitution of human DNA licensing using purified proteins.
View Article and Find Full Text PDFStereotactic implantation of diffusing alpha-emitters radiation therapy sources in the swine brain: a potential new focal therapy for brain tumors.
J Neurooncol
January 2025
Department of Neurosurgery, Hadassah-Hebrew University Medical Center, Jerusalem, Israel.
Purpose: Diffusing alpha-emitters Radiation Therapy ("Alpha DaRT") is a new cancer treatment modality that employs radium-224-loaded metal sources implanted in solid tumors to disperse alpha-emitting atoms within a therapeutic "kill-zone" of a few millimeters around each source. Preclinical studies have demonstrated tumor growth delay in various cancer types, including glioblastoma multiforme, and the method is used in clinical trials for patients with skin and head and neck cancer. This study aims to assess the safety and feasibility of implementing Alpha DaRT for brain tumor treatment in a large animal model.
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