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  1. Biology

Securin regulates the spatiotemporal dynamics of separase

Separase regulates multiple aspects of the metaphase-to-anaphase transition. Separase cleaves cohesin to allow chromosome segregation and localizes to vesicles to promote exocytosis. The anaphase-promoting complex/cyclosome (APC/C) activates separase by ubiquitinating its inhibitory chaperone, securin, triggering its degradation. How this pathway controls the exocytic function of separase is unknown. During meiosis I, securin is degraded over […]
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Scientists uncover new way viruses fight back against bacteria
  1. Life Sciences

New model can help understand coexistence in nature

Different species of seabirds can coexist on small, isolated islands despite eating the same kind of fish. A researcher at Uppsala University has been involved in developing a mathematical model that can be used to better understand how this ecosystem works. “Our model shows that coexistence occurs naturally when species differ in their ability to […]
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Scientists uncover new way viruses fight back against bacteria
  1. Life Sciences

Scientists recreate mouse from gene older than animal life

Published in Nature Communications, an international team of researchers has achieved an unprecedented milestone: the creation of mouse stem cells capable of generating a fully developed mouse using genetic tools from a unicellular organism, with which we share a common ancestor that predates animals. This breakthrough reshapes our understanding of the genetic origins of stem […]
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  1. Biology

Visualizing ER-phagy and ER architecture in vivo

ER-phagy is an evolutionarily conserved mechanism crucial for maintaining cellular homeostasis. However, significant gaps persist in our understanding of how ER-phagy and the ER network vary across cell subtypes, tissues, and organs. Furthermore, the pathophysiological relevance of ER-phagy remains poorly elucidated. Addressing these questions requires developing quantifiable methods to visualize ER-phagy and ER architecture in […]
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Scientists uncover new way viruses fight back against bacteria
  1. Life Sciences

Biodiversity in the city: Designing urban spaces for humans and animals

Animals and plants also live and thrive on public squares. This creates opportunities for greater biodiversity and well-being for the human population. Researchers at the Technical University of Munich (TUM) have studied at 103 locations in Munich how various factors affect flora and fauna. They advocate a close examination of local conditions and a more […]
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  1. Biology

Preserve or destroy: Orphan protein proteostasis and the heat shock response

Most eukaryotic genes encode polypeptides that are either obligate members of hetero-stoichiometric complexes or clients of organelle-targeting pathways. Proteins in these classes can be released from the ribosome as “orphans”—newly synthesized proteins not associated with their stoichiometric binding partner(s) and/or not targeted to their destination organelle. Here we integrate recent findings suggesting that although cells […]
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Scientists uncover new way viruses fight back against bacteria
  1. Life Sciences

Biologists reveal the genetic ‘switch’ behind parrot color diversity

From the Carnival in Rio de Janeiro to the shoulders of pirates: parrots are synonymous with colour for people across the world. In a new study published in the journal Science, scientists from The University of Hong Kong, together with an international team led by scientists from BIOPOLIS-CIBIO (Portugal) uncover for the first time a […]
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Scientists uncover new way viruses fight back against bacteria
  1. Life Sciences

Generation of rat offspring from ovarian oocytes by cross-species transplantation

The idea of maturing oocytes in the ovary to produce offspring has been implemented in various ways. One such method, ovarian transplantation, is a relatively simple procedure for obtaining eggs, compared to in vitro culture of ovaries and follicles. However, it is still difficult to transplant ovaries into cellular immunodeficient mice and produce offspring from […]
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  1. Biology

Non-cell autonomous regulation of cell–cell signaling and differentiation by mitochondrial ROS

Mitochondrial reactive oxygen species (ROS) function intrinsically within cells to induce cell damage, regulate transcription, and cause genome instability. However, we know little about how mitochondrial ROS production non-cell autonomously impacts cell–cell signaling. Here, we show that mitochondrial dysfunction inhibits the plasma membrane localization of cell surface receptors that drive cell–cell communication during oogenesis. Within […]
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Scientists uncover new way viruses fight back against bacteria
  1. Life Sciences

New discovery enables gene therapy for muscular dystrophies, other disorders

Gene therapy can effectively treat various diseases, but for some debilitating conditions like muscular dystrophies there is a big problem: size. The genes that are dysfunctional in muscular dystrophies are often extremely large, and current delivery methods can’t courier such substantial genetic loads into the body. A new technology, dubbed “StitchR,” surmounts this obstacle by […]
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Scientists uncover new way viruses fight back against bacteria
  1. Life Sciences

Bioluminescent proteins made from scratch enable non-invasive, multi-functional biological imaging

Bioluminescence is the natural chemical process of light creation in some living creatures that makes fireflies flicker and some jellyfish glow. Scientists have long been interested in borrowing the secrets of these animals’ light-producing genes to create similar effects in vertebrates, for a variety of biomedical applications. UC Santa Cruz Assistant Professor of Biomolecular Engineering […]
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  1. Biology

Stairway to the Golgi: Two paths VPS13B can go by

VPS13 proteins mediate lipid transfer across membranes. Among them, VPS13B is associated with Golgi membranes, and VPS13B mutations cause Cohen syndrome. In this issue, Ugur et al. (https://doi.org/10.1083/jcb.202311189) and Du et al. (https://doi.org/10.1083/jcb.202402083) reveal new VPS13B interactors and their functions in Golgi organization and trafficking.
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