October

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31.10.2021

Inactivation of Fgf3 and Fgf4 within the Fgf3/Fgf4/Fgf15 gene cluster reveals their redundant requirement for mouse inner ear induction and embryonic survival

Authors Zelarayan L, Vendrell V, Domínguez-Frutos E, López-Hernández I, Schimmang-Alonso K, Alonso MT, Alvarez Y, Maier H, Anderson MJ, Lewandoski M, Schimmang T. Journal Developmental Dynamics Citation Dev Dyn. 2021 Oct 31. Abstract Background Fibroblast growth factors (Fgfs) are required for survival and organ formation during embryogenesis. Fgfs often execute
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Neurotransmitter-Molekül Foto: MPI-EM

26.10.2021

Regulation of signal transmission in nerve cells

The approximately 100 billion nerve cells of our brain are amazing marvels of biology. In many brain areas, the number of signals exchanged between nerve cells varies depending on activity from just a few to over 100 per second. Some nerve cells can even transmit over 1000 signals per second
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25.10.2021

Cnm1 mediates nucleus-mitochondria contact site formation in response to phospholipid levels

Authors Eisenberg-Bord M, Zung N, Collado J, Drwesh L, Fenech EJ, Fadel A, Dezorella N, Bykov YS, Rapaport D, Fernandez-Busnadiego R, Schuldiner M Journal Journal of Cell Biology Citation J Cell Biol. 2021 Nov 1;220(11):e202104100. Abstract Mitochondrial functions are tightly regulated by nuclear activity, requiring extensive communication between these organelles.
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Lifecycle of a biological cell: cell (in centre) before mitosis (cell division) takes place. From bottom left and then clockwise: the cells become rounder and the shell thickens as the insides of the cell change - soften and fluidify. The genetic material is shared out to create two new daughter cells. (Image taken with a confocal microscope, research carried out using optical tweezers) Photo: Sebastian Hurst

22.10.2021

‘Feeling’ the living cell’s life cycle using optical tweezers

Living cells are the basic building blocks of all organisms. We, as humans, are essentially a collection of trillions of living cells: and all these cells emerge from a single fertilized egg. This means that “mitosis” (or cell division) is one of the most fundamental and important processes of life.
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21.10.2021

Intracellular softening and increased viscoelastic fluidity during division

Authors Hurst S, Vos BE, Brandt M, Betz T Journal Nature Physics Citation Nat. Phys. (2021). Abstract The life and death of an organism rely on correct cell division, which occurs through the process of mitosis. Although the biochemical signalling and morphogenetic processes during mitosis are well understood, the importance
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21.10.2021

Munc13-1 is a Ca 2+-phospholipid-dependent vesicle priming hub that shapes synaptic short-term plasticity and enables sustained neurotransmission

Authors Lipstein N, Chang S, Lin KH, López-Murcia FJ, Neher E, Taschenberger H, Brose N Journal Neuron Citation Neuron. 2021 Oct 21:S0896-6273(21)00727-3. Abstract During ongoing presynaptic action potential (AP) firing, transmitter release is limited by the availability of release-ready synaptic vesicles (SVs). The rate of SV recruitment (SVR) to release
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21.10.2021

Marina Rodnina receives Albrecht-Kossel Award

On October 21, Professor Dr. Marina Rodnina, Max Planck Institute for Biophysical Chemistry in Göttingen and MBExC member, receives the Albrecht-Kossel Award of the German Chemical Society (GDCh) for her work in the field of biochemistry. The award is endowed with 7,500 EUR. Link to the GDCh press release
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21.10.2021

Deep learning improves macromolecule identification in 3D cellular cryo-electron tomograms

Authors Moebel E, Martinez-Sanchez A, Lamm L, Righetto RD, Wietrzynski W, Albert S, Larivière D, Fourmentin E, Pfeffer S, Ortiz J, Baumeister W, Peng T, Engel BD, Kervrann C Journal Nature Methods Citation Nat Methods. 2021 Oct 21. Abstract Cryogenic electron tomography (cryo-ET) visualizes the 3D spatial distribution of macromolecules
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20.10.2021

An in vitro system to silence mitochondrial gene expression

Authors Cruz-Zaragoza LD, Dennerlein S, Linden A, Yousefi R, Lavdovskaia E, Aich A, Falk RR, Gomkale R, Schöndorf T, Bohnsack MT, Richter-Dennerlein R, Urlaub H, Rehling P Journal Cell Citation Cell 2021 Oct 20. Abstract The human mitochondrial genome encodes thirteen core subunits of the oxidative phosphorylation system, and defects
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19.10.2021

Label-free imaging of age-related cardiac structural changes in non-human primates using multiphoton nonlinear microscopy

Authors Khan A, Ramos-Gomes F, Markus A, Mietsch M, Hinkel R, Alves F Journal Biomedical Optics Express Citation Biomed. Opt. Express 12, 7009-7023 (2021). Abstract Heart failure is one of the most common causes of morbidity and mortality. Both maturational abnormalities and age-associated cardiac pathologies contribute to heart failure. Imaging-based
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