Marking replicating DNA with multiple labels presents the possibility of revealing new features and mechanisms of DNA synthesis and cell division; however, progression beyond double labeling has been hampered by cross-reactivity of label detection and scarcity of appropriate labels. Here, we present a method for triple S-phase labeling of the dividing cells, with a fourth label used to mark cells actively engaged in cell-cycle progression (e.g., using Ki67) or to phenotype the dividing cells or their progeny (e.g., using a GFP-expressing lineage reporter transgene). We apply this method to determine the parameters of neural stem cell division in the adult brain, to birth date up to four cohorts of dividing cells, and to reveal patterns of stem cell division in non-neural tissues.
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http://dx.doi.org/10.1016/j.stemcr.2017.12.020 | DOI Listing |
J Transl Med
January 2025
Department of Endocrine Medicine, Shanghai Sixth People's Hospital, Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai, 201306, Chin, China.
Background And Objective: Mitochondria are crucial to the function of renal tubular cells, and their dynamic perturbation in many aspects is an important mechanism of diabetic kidney disease (DKD). Single-nucleus RNA sequencing (snRNA-seq) technology is a high-throughput sequencing analysis technique for RNA at the level of a single cell nucleus. Here, our DKD mouse kidney single-cell RNA sequencing conveys a more comprehensive mitochondrial profile, which helps us further understand the therapeutic response of this unique organelle family to drugs.
View Article and Find Full Text PDFPhotosynth Res
January 2025
State Key Laboratory of Forage Breeding-by-Design and Utilization, Key Laboratory of Photobiology, Institute of Botany, Chinese Academy of Sciences, Beijing, 100093, China.
Maize (Zea mays L.) performs highly efficient C photosynthesis by dividing photosynthetic metabolism between mesophyll and bundle sheath cells. In vivo physiological measurements are indispensable for C photosynthesis research as photosynthetic activities are easily interrupted by leaf section or cell isolation.
View Article and Find Full Text PDFBMC Plant Biol
January 2025
Jiangxi Provincial Key Laboratory of Subtropical Forest Resources Cultivation, 2011 Collaboration Innovation Center of Jiangxi Typical Trees Cultivation and Utilization, Jiangxi Agricultural University, Nanchang, Jiangxi, 330045, China.
Background: Frequent interspecific hybridization, unclear genetic backgrounds, and ambiguous evolutionary relationships within the genus Lycoris pose significant challenges to the identification and classification of hybrids, thereby impacting the application and development of Lycoris. This study utilizes karyotype structure, genome size, and fluorescent in situ hybridization (FISH) technology to explore the chromosomal evolution and hybrid identification of Lycoris employing three approaches at the cytogenetic level.
Results: The findings indicate that species with a smaller basic chromosome number exhibit less asymmetry than those with a larger basic chromosome number, suggesting that species with different basic chromosome numbers may have followed different evolutionary pathways.
BMC Gastroenterol
January 2025
Gastroenterology Department, Longyan First Hospital, No. 105 Jiuyi North Road, Xinluo District, Longyan, 364300, Fujian, China.
Background: Metabolic dysfunction-associated fatty liver disease (MAFLD) is increasingly prevalent, and systemic inflammation markers may play a role in its pathogenesis. This study aimed to investigate the relationship between neutrophil-albumin ratio (NAR) and MAFLD.
Methods: This population-based study was performed using data from NHANES 2017-2018 and included 4526 individuals with a median age of 44 years old, and the males account for 46.
Development
January 2025
Department of Plant and Microbial Biology, University of Zurich, Zollikerstrasse 107, CH8008, Zurich, Switzerland.
Cell division is a fundamental process shared across diverse life forms, from yeast to humans and plants. Multicellular organisms reproduce through the formation of specialized types of cells, the gametes, which at maturity enter a quiescent state that can last decades. At the point of fertilization, signalling lifts the quiescent state and triggers cell cycle reactivation.
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