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In meiosis, one round of DNA replication followed by two rounds of chromosome segregation halves the ploidy of the original cell. Accurate chromosome segregation in meiosis I depends on recombination between homologous chromosomes. Sister centromeres attach to the same spindle pole in this division and only segregate in meiosis II.
View Article and Find Full Text PDFEnabling immune checkpoint blockade efficacy in T-lymphopenia by restoring CD8 T cell dynamics with IL-7 cytokine therapy.
Front Immunol
December 2024
Department of Life Sciences, Pohang University of Science and Technology, Pohang, Republic of Korea.
Introduction: T-lymphopenia (TLP) is a frequently observed condition in cancer patients, often exacerbated by conventional chemo/radiotherapy, which impairs the efficacy of subsequent immune checkpoint blockade (ICB) therapy. This study aimed to understand the impact of TLP on ICB responsiveness and explore potential therapeutic strategies to enhance antitumor immunity.
Methods: To investigate ICB responsiveness depending on the severity of TLP, first, we established TLP mouse models that mimic clinically observed mild and severe TLP through thymectomy and anti-Thy1-induced peripheral T cell depletion.
Junctional Role of Anionic Domain of Mussel Foot Protein Type 4 in Underwater Mussel Adhesion.
Biomacromolecules
January 2025
Department of Chemical Engineering, Pohang University of Science and Technology, Pohang 37673, Republic of Korea.
Mussel byssi form a robust underwater adhesive system, anchoring to various surfaces in harsh marine environments. Central to byssus is foot protein type 4 (fp-4), a junction protein connecting collagenous threads to proteinaceous plaque. This study investigated an anionic plaque-binding domain of fp-4 (fp-4a) and its interactions with cationic foot proteins (fp-1, fp-5, and fp-151 as model substitutes for fp-2) and metal ions (Ca, Fe, and V).
View Article and Find Full Text PDFDe novo assembly of the mitochondrial genome of Glycyrrhiza glabra and identification of two types of homologous recombination configurations caused by repeat sequences.
BMC Genomics
January 2025
School of Life Sciences, Jiangsu University, Zhenjiang, Jiangsu, 212013, China.
Background: Glycyrrhiza glabra, which is widely used in medicine and therapy, is known as the 'king of traditional Chinese medicine'. In this study, we successfully assembled and annotated the mitochondrial and chloroplast genomes of G. glabra via high-throughput sequencing technology, combining the advantages of short-read (Illumina) and long-read (Oxford Nanopore) sequencing.
View Article and Find Full Text PDFCoherent manipulation of photochemical spin-triplet formation in quantum dot-molecule hybrids.
Nat Mater
January 2025
State Key Laboratory of Molecular Reaction Dynamics, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian, China.
The interconversion between singlet and triplet spin states of photogenerated radical pairs is a genuine quantum process, which can be harnessed to coherently manipulate the recombination products through a magnetic field. This control is central to such diverse fields as molecular optoelectronics, quantum sensing, quantum biology and spin chemistry, but its effect is typically fairly weak in pure molecular systems. Here we introduce hybrid radical pairs constructed from semiconductor quantum dots and organic molecules.
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