RESEARCH HIGHLIGHTS
FIRST PERSON
REVIEW
- Endocytosis in proliferating, quiescent and terminally differentiated cells
Summary: Studies on endocytosis usually use transformed cells, but the majority of cells in an adult organism have exited the cell cycle. Here, we review endocytosis in dividing, quiescent and terminally differentiated cells.
SHORT REPORTS
- Biphasic recruitment of TRF2 to DNA damage sites promotes non-sister chromatid homologous recombination repair
Summary: TRF2 is recruited to DNA double-strand break damage sites through a two-step mechanism and functions in non-sister chromatid homologous recombination repair.
- Cytokine exocytosis and JAK/STAT activation in the Drosophila ovary requires the vesicle trafficking regulator α-Snap
Summary: The vesicle trafficking regulator α-Snap acts upstream of the Janus kinase/signal transducer and activator of transcription (JAK/STAT) signaling pathway to induce motile cell fate during oogenesis.
RESEARCH ARTICLES
- Parallel signaling pathways regulate excitable dynamics differently to mediate pseudopod formation during eukaryotic chemotaxis
Summary: Eukaryotic chemotaxis and pseudopod dynamics are mediated by cGMP and PIP3 signaling pathways, which show characteristic features of excitability and refractoriness.
- Role of G-proteins and phosphorylation in the distribution of AGS3 to cell puncta
Summary: A single threonine residue in the G-protein regulatory domain of AGS3 is a determinant factor in the oscillation of AGS3 among different subcellular compartments and protein phase transitions.
- Elongated mitochondrial constrictions and fission in muscle fatigue
Highlighted Article: Exercise and electrical stimulation increase the frequency of elongated mitochondrial constrictions, providing novel structural evidence for mitochondrial dynamics stages in mouse fast-twitch muscle fibers.
- CAP1-mediated actin cycling via ADF/cofilin proteins is essential for asymmetric division in mouse oocytes
Summary: CAP1 is shown to regulate the ADF/cofilin protein family that mediates dynamic actin recycling in mouse oocytes.
- CCDC102B functions in centrosome linker assembly and centrosome cohesion
Summary: CCDC102B, a protein whose function was previously unknown, is essential for centrosome cohesion and facilitates the filament formation of rootletin.
- Localization of all four ZnT zinc transporters in Dictyostelium and impact of ZntA and ZntB knockout on bacteria killing
Highlighted Article: Metal poisoning is one of the bactericidal strategies of macrophages. Here, we describe the dynamics of free Zn2+ and the role of Zn2+ transporters during phagocytosis in Dictyostelium.
- Alpha-synuclein fibrils recruit TBK1 and OPTN to lysosomal damage sites and induce autophagy in microglial cells
Summary: Autophagy dynamics of microglial cells stimulated with the neuropathogenic protein alpha-synuclein (AS) show that autophagy is activated as a response to control AS-induced lysosomal damage.
- Tropomyosin 3.5 protects the F-actin networks required for tissue biomechanical properties
Highlighted Article: Tropomyosin 3.5 stabilizes F-actin in eye lens fiber cells and promotes normal tissue biomechanical properties. Tpm3.5 deficiency leads to F-actin network rearrangements and decreased lens stiffness and resilience.
- Soluble α-synuclein facilitates priming and fusion by releasing Ca2+ from the thapsigargin-sensitive Ca2+ pool in PC12 cells
Summary: α-Synuclein and the Rab3A–Munc13-1–Munc18-1 act on the same population of vesicles to enhance exocytosis via different pathways, and α-synuclein activates Ca2+ release to enhance priming and fusion.
- Hepatocyte-like cells reveal novel role of SERPINA1 in transthyretin amyloidosis
Summary: Several chaperone genes are differently expressed in ATTR-derived hepatocyte-like cells and SERPINA1 might interfere with TTR aggregation.
This issue
Other journals from The Company of Biologists
ASCBǀEMBO 2019 Special Collection
We're at ASCB - visit booth 1000 to meet the JCS team!
Enjoy a collection of articles published in Journal of Cell Science by a range of speakers at the ASCBǀEMBO 2019 Meeting. Featuring articles from the labs of JCS Editorial Advisory Board members, all articles in the collection are free to access.
Early-bird meeting deadline - 20 December
Don’t miss the early-bird application deadline for the 2020 JCS meeting on Host-Pathogen interface! Taking place 17-20 May 2020 at Wotton House, Surrey, UK, the meeting will bring together experts working at the interface between cell biology and pathogens. Places are limited, so apply to attend now.
Cell Scientist to Watch – Elizabeth Hinde
From physics and chemistry to art and back again, Elizabeth Hinde is currently based at the University of Melbourne. Her research focuses on fluorescence microscopy methods to quantify live-cell nuclear organisation and the role chromatin dynamics play in maintaining genome function. Read the full interview to find out more.
Have you heard about our Travelling Fellowships?
Early-career researchers can apply for up to £2,500 to offset the cost of travel and expenses to make collaborative visits to other labs around the world. Read about Huw’s experience in Beijing, where he spent time with the world leaders in the development of super-resolution microscopy, the Li lab at the Chinese Academy of Sciences.
Articles of interest in our sister journals
Casein kinase 1α decreases β-catenin levels at adherens junctions to facilitate wound closure in Drosophila larvae
Chang-Ru Tsai, Michael J. Galko
Development
Spherical spindle shape promotes perpendicular cortical orientation by preventing isometric cortical pulling on both spindle poles during C. elegans female meiosis
Elizabeth Vargas, Karen P. McNally, Daniel B. Cortes, Michelle T. Panzica, Brennan M. Danlasky, Qianyan Li, Amy Shaub Maddox, Francis J. McNally
Development