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Motif distribution and DNA methylation underlie distinct Cdx2 binding during development and homeostasis.
Nat Commun
January 2025
Department of Stem Cell Biology and Regenerative Medicine, Keck School of Medicine, University of Southern California, Los Angeles, CA, USA.
Transcription factors guide tissue development by binding to developmental stage-specific targets and establishing an appropriate enhancer landscape. In turn, DNA and chromatin modifications direct the genomic binding of transcription factors. However, how transcription factors navigate chromatin features to selectively bind a small subset of all the possible genomic target loci remains poorly understood.
View Article and Find Full Text PDFWDR74-Mediated Ribosome Biogenesis and Proteome Dynamics During Mouse Preimplantation Development.
Genes Cells
January 2025
Advanced Biological Information Research Division, INAMORI Frontier Research Center, Kyushu University, Fukuoka, Japan.
Preimplantation embryonic development is orchestrated by dynamic changes in the proteome and transcriptome, regulated by mechanisms such as maternal-to-zygotic transition. Here, we employed label-free quantitative proteomics to comprehensively analyze proteome dynamics from germinal vesicle oocytes to blastocysts in mouse embryos. We identified 3490 proteins, including 715 consistently detected across all stages, revealing stage-specific changes in proteins associated with translation, protein modification, and mitochondrial metabolism.
View Article and Find Full Text PDFTranslation of maternal mRNAs is crucial for early embryonic development. In cell fates become determined from the first division without new transcription, making this organism ideal for studying post-transcriptional regulation of lineage specification. Using low-input ribosome profiling combined with RNA sequencing on precisely staged embryos, we measured protein translation during the first four cell cycles of development.
View Article and Find Full Text PDFStage-specific expression and divergent functions of two insulinase-like proteases associated with host infectivity in Cryptosporidium.
PLoS Negl Trop Dis
January 2025
State Key Laboratory for Animal Disease Control and Prevention, South China Agricultural University, Guangzhou, China.
Background: The determinants of differences in host infectivity among Cryptosporidium species and subtypes are poorly understood. Results from recent comparative genomic studies suggest that gains and losses of multicopy subtelomeric genes encoding insulinase-like proteases (INS-19 and INS-20 in Cryptosporidium parvum and their orthologs in closely related species) may potentially contribute to these differences.
Methodology/principal Findings: In this study, we investigated the expression and biological function of the INS-19 and INS-20 of C.
Temporal regulation of gene expression is required for developmental transitions, including differentiation, proliferation, and morphogenesis. In the nematode , heterochronic microRNAs (miRNAs) regulate the temporal expression of genes that promote animal development. The heterochronic miRNAs lin-4 and let-7 are required during different stages of larval development and are associated with the miRNA-specific Argonaute ALG-1.
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