Meiotic pairing involves a two-step process of DNA double-strand break (DSB)-independent chromosome alignment and precise sequence matching at DSBs. In this issue of Developmental Cell, Boateng et al. (2013) uncover a requirement in the alignment step for SPO11, a nuclease required for DSB formation, independent of its enzymatic activity.
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http://dx.doi.org/10.1016/j.devcel.2013.01.006 | DOI Listing |
Adv Mater
December 2024
Frontiers Science Center for Transformative Molecules, School of Chemistry and Chemical Engineering, School of Biomedical Engineering, National Center for Translational Medicine, State Key Laboratory of Oncogenes and Related Genes, Shanghai Jiao Tong University, Shanghai, 200240, China.
Surgery remains an essential treatment for managing drug-resistant focal epilepsy, but its accessibility and efficacy are limited in patients without distinct structural abnormalities on magnetic resonance imaging (MRI). Potassium ion (K), a critical marker for seizure-associated neuronal signaling, shows significant promise for designing sensors targeting hidden epileptic foci. However, existing sensors cannot cross the blood-brain barrier and lack the ability to specifically enrich and amplify K signals in the brain with high temporal and spatial resolution.
View Article and Find Full Text PDFCell Biol Int
December 2024
Center of Clinical Aerospace Medicine, School of Aerospace Medicine, Key Laboratory of Aerospace Medicine of Ministry of Education, Air Force Medical University, Xi'an, Shaanxi, China.
Hidden hearing loss (HHL) is characterized by normal audiometric thresholds but impaired auditory function, particularly in noisy environments. In vivo, we employed auditory brainstem response (ABR) testing and ribbon synapses counting to assess changes in mouse hearing function, and observed the morphology of hair cells through scanning electron microscopy. SRT1720 was administered to the cochlea via round window injection.
View Article and Find Full Text PDFAngew Chem Int Ed Engl
October 2024
Higher Educational Key Laboratory for Nano Biomedical Technology of Fujian Province, Department of Pharmaceutical Analysis, Fujian Medical University, Fuzhou, 350004, China.
Comprehending the underlying factors that govern photoluminescence (PL) in metal nanoclusters (NCs) under physiological conditions remains a highly intriguing and unresolved challenge, particularly for their biomedical applications. In this study, we evaluate the critical role of excited-state proton-coupled electron transfer in the emission of metal NCs. Our findings demonstrate that hydronium ion (HO) binding can trigger a nonlinear, pH-dependent excited-state concerted electron proton transfer (CEPT) reaction.
View Article and Find Full Text PDFInt J Cancer
October 2024
State Key Laboratory of Oral & Maxillofacial Reconstruction and Regeneration, Key Laboratory of Oral Biomedicine Ministry of Education, Hubei Key Laboratory of Stomatology, School & Hospital of Stomatology, Wuhan University, Wuhan, China.
In recent years, there has been a growing interest in liquid biopsy due to its non-invasive diagnostic value. Postoperative drainage fluid (PDF) is the fluid exudate from the wound site following lymph node dissection. PDF is regarded as a medical waste with no specific clinical significance.
View Article and Find Full Text PDFMed Phys
October 2024
Department of Radiology, Huashan hospital, Fudan University, Shanghai, P.R. China.
Background: The relaxivity of magnetic resonance imaging (MRI) contrast agents is primarily attributed to metal ions such as gadolinium (Gd) and iron. However, the impact of organic solutes on relaxivity, particularly through alterations in water molecule dynamics, has not been thoroughly investigated. This research was aimed to explore how organic solutes affect the relaxivities of water and Gd-based contrast agents (GBCAs), potentially revealing new aspects for the development of contrast agents.
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