Bicaudal-C (Bicc1) is an evolutionarily conserved RNA binding protein that functions in a regulatory capacity in a variety of contexts. It was originally identified as a genetic locus in that when disrupted resulted in radical changes in early development. In the most extreme phenotypes embryos carrying mutations developed with mirror image duplications of posterior structures and it was this striking phenotype that was responsible for the name Bicaudal. These seminal studies established Bicc1 as an important regulator of development. What was not anticipated from the early work, but was revealed subsequently in many different organisms was the broad fundamental impact that Bicc1 proteins have on developmental biology; from regulating cell fates in vertebrate embryos to defects associated with several human disease states. In the following review we present a perspective of Bicc1 focusing primarily on the molecular aspects of its RNA metabolism functions in vertebrate embryos.
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http://dx.doi.org/10.3389/fcell.2022.981696 | DOI Listing |
Sci Rep
December 2024
Department of Biological Sciences, Université de Montréal, Montréal, QC, Canada.
Mitochondrial epigenetics, particularly mtDNA methylation, is a flourishing field of research. MtDNA methylation appears to play multiple roles, including regulating mitochondrial transcription, cell metabolism and mitochondrial inheritance. In animals, bivalves with doubly uniparental inheritance (DUI) of mitochondria are the exception to the rule of maternal mitochondrial inheritance since DUI also involve a paternal mtDNA transmitted from the father to sons.
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December 2024
Center for Data Sciences, Brigham and Women's Hospital, Boston, MA, USA; Division of Genetics, Department of Medicine, Brigham and Women's Hospital and Harvard Medical School, Boston, MA, USA; Department of Biomedical Informatics, Harvard Medical School, Boston, MA, USA; Program in Medical and Population Genetics, Broad Institute of MIT and Harvard, Cambridge, MA, USA; Division of Rheumatology, Inflammation, and Immunity, Department of Medicine, Brigham and Women's Hospital and Harvard Medical School, Boston, MA, USA. Electronic address:
The amino acid sequence of the T cell receptor (TCR) varies between T cells of an individual's immune system. Particular TCR residues nearly guarantee mucosal-associated invariant T (MAIT) and natural killer T (NKT) cell transcriptional fates. To define how the TCR sequence affects T cell fates, we analyze the paired αβTCR sequence and transcriptome of 961,531 single cells.
View Article and Find Full Text PDFNat Chem
December 2024
Institute of Physiological Chemistry and Pathobiochemistry, University of Münster, Münster, Germany.
Pluripotent cells can yield different cell types determined by the specific sequence of differentiation signals that they encounter as the cell activates or deactivates functions and retains memory of previous inputs. Here, we achieved pluripotency in synthetic cells by incorporating three dormant apo-metalloenzymes such that they could differentiate towards distinct fates, depending on the sequence of specific metal ion transport with ionophores. In the first differentiation step, we selectively transported one of three extracellular metal ion cofactors into pluripotent giant unilamellar vesicles (GUVs), which resulted in elevation of intracellular pH, hydrogen peroxide production or GUV lysis.
View Article and Find Full Text PDFParasitol Res
December 2024
Institute of Hygiene and Microbiology, University of Würzburg, Josef-Schneider-Strasse 2, 97080, Würzburg, Germany.
Pluripotent somatic stem cells are the drivers of unlimited growth of Echinococcus multilocularis metacestode tissue within the organs of the intermediate host. To understand the dynamics of parasite proliferation within the host, it is therefore important to delineate basic mechanisms of Echinococcus stem cell maintenance and differentiation. We herein undertake the first step towards characterizing the role of an evolutionarily old metazoan cell-cell communication system, delta/notch signalling, in Echinococcus cell fate decisions.
View Article and Find Full Text PDFElife
December 2024
Centre for Regenerative Medicine, Institute for Regeneration and Repair, University of Edinburgh, Edinburgh, United Kingdom.
A major challenge in the stem cell biology field is the ability to produce fully functional cells from induced pluripotent stem cells (iPSCs) that are a valuable resource for cell therapy, drug screening, and disease modelling. Here, we developed a novel inducible CRISPR-mediated activation strategy (iCRISPRa) to drive the expression of multiple endogenous transcription factors (TFs) important for in vitro cell fate and differentiation of iPSCs to haematopoietic progenitor cells. This work has identified a key role for IGFBP2 in developing haematopoietic progenitors.
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