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Oversized cells activate global proteasome-mediated protein degradation to maintain cell size homeostasis.
Elife
January 2025
Cell Biology, Hospital for Sick Children, Toronto, Canada.
Proliferating animal cells maintain a stable size distribution over generations despite fluctuations in cell growth and division size. Previously, we showed that cell size control involves both cell size checkpoints, which delay cell cycle progression in small cells, and size-dependent regulation of mass accumulation rates (Ginzberg et al., 2018).
View Article and Find Full Text PDFParabrachial CGRP neurons modulate active defensive behavior under a naturalistic threat.
Elife
January 2025
School of Psychology, Korea University, Seoul, Republic of Korea.
Recent studies suggest that calcitonin gene-related peptide (CGRP) neurons in the parabrachial nucleus (PBN) represent aversive information and signal a general alarm to the forebrain. If CGRP neurons serve as a true general alarm, their activation would modulate both passive nad active defensive behaviors depending on the magnitude and context of the threat. However, most prior research has focused on the role of CGRP neurons in passive freezing responses, with limited exploration of their involvement in active defensive behaviors.
View Article and Find Full Text PDFNup107 contributes to the maternal to zygotic transition by preventing the premature nuclear export of pri-miRNA 427.
Development
January 2025
Pediatric Genomics Discovery Program, Departments of Pediatrics and Genetics, Yale School of Medicine, 333 Cedar Street, New Haven, CT, 06520, USA.
Emerging evidence suggests that the nuclear pore complex can have unique compositions and distinct nucleoporin functions in different cells. Here, we show that Nup107, a key component of the NPC scaffold, varies in expression over development: it is expressed at higher levels in the blastula compared to the gastrula suggesting a critical role prior to gastrulation. We find depletion of Nup107 affects the differentiation of the early germ layers leading to an expansion of the ectoderm at the expense of endoderm and mesoderm.
View Article and Find Full Text PDFExpression of PAX6 and Keratocyte-Characteristic Markers in Human Limbal Stromal Cells of Congenital Aniridia and Healthy Subjects, .
Curr Eye Res
January 2025
Dr. Rolf M. Schwiete Center for Limbal Stem Cell and Congenital Aniridia Research, Saarland University, Saar, Germany.
Purpose: Our aim was to examine the expression of PAX6 and keratocyte-specific markers in human limbal stromal cells (LSCs) in congenital aniridia (AN) and in healthy corneas, .
Methods: Primary human LSCs were extracted from individuals with aniridia (AN-LSCs) ( = 8) and from healthy corneas (LSCs) ( = 8). The cells were cultured in either normal-glucose serum-containing cell culture medium (NGSC-medium) or low-glucose serum-free cell culture medium (LGSF-medium).
Use of psychedelic treatments in psychiatric clinical practice: an EPA policy paper.
Eur Psychiatry
January 2025
Collaborative Antwerp Psychiatric Research Institute (CAPRI), University of Antwerp, Antwerp, Belgium.
Background: Recent years show an exponential increased interest ("renaissance") in the use of psychedelics for the treatment of mental disorders and broader. Some of these treatments, such as psilocybin for depression, are in the process of formal regulation by regulatory bodies in the US (FDA) and Europe (EMA), and as such on the brink of real-world implementation. In the slipstream of these developments increasing commercial initiatives are taking shape.
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