Issues
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Cover image
Cover Image
Cover: Wiring diagram of the biochemical interactors that build the mechanoresponsive cytoskeletal network. These components assemble into contractility kits that promote rapid response to mechanical inputs. See article by Priyanka Kothari et al. (jcs.226704).
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RESEARCH HIGHLIGHTS
EDITORIAL
FIRST PERSON
CELL SCIENTISTS TO WATCH
CELL SCIENCE AT A GLANCE
Linear ubiquitination at a glance
Summary: Linear ubiquitin chains are crucial modulators of innate and adaptive immune responses that act by regulating inflammatory and cell death signalling.
REVIEW
Lysosomal storage disorders – challenges, concepts and avenues for therapy: beyond rare diseases
Summary: A critical review of the current knowledge on the cellular processes involved in lysosomal storage disorders. How understanding of these rare disorders could be applied to more common diseases is discussed.
SHORT REPORT
Chk1-mediated Cdc25A degradation as a critical mechanism for normal cell cycle progression
Summary: Chk1 regulates cell cycle progression by inducing Cdc25A degradation in the absence of exogenous DNA damage.
RESEARCH ARTICLES
Inhibition of Notch signaling by the p105 and p180 subunits of Drosophila chromatin assembly factor 1 is required for follicle cell proliferation
Summary: CAF1 is a Notch signaling activator in Drosophila wing imaginal disc development. Unexpectedly, this study reveals that CAF1 silences Notch signaling to sustain Drosophila follicle cell proliferation.
EGCG protects cardiomyocytes against hypoxia-reperfusion injury through inhibition of OMA1 activation
Summary: EGCG inhibits OMA1 self-cleavage and attenuates OPA1 cleavage, suggesting that EGCG can be used to treat IRI.
Akt and SGK protein kinases are required for efficient feeding by macropinocytosis
Summary: Dictyostelium feed by macropinocytosis in a PIP3-dependent manner. Macropinosomes are smaller and fluid uptake is nearly abolished in cells lacking either PI3Ks or the downstream kinases PkbA and PkbR1.
GM130 and p115 play a key role in the organisation of the early secretory pathway during skeletal muscle differentiation
Summary: Depletion of GM130 and p115 in differentiating skeletal muscle cells perturbs the association of the Golgi and ERES, affecting the trafficking of M-cadherin and altering skeletal muscle cell differentiation.
The Plk1 kinase negatively regulates the Hedgehog signaling pathway by phosphorylating Gli1
Summary: The important cell cycle kinase Plk1 regulates Hh signaling by phosphorylating and inhibiting Gli1, a downstream transcription factor of Hh signaling pathway.
Deubiquitylase USP9X maintains centriolar satellite integrity by stabilizing pericentriolar material 1 protein
Summary: Our study reveals that deubiquitylase USP9X is a constituent of centriolar satellites, and functions to maintain centriolar satellite integrity by preventing proteasomal degradation of the core satellite scaffold protein PCM1.
An amphipathic helix of vinexin α is necessary for a substrate stiffness-dependent conformational change in vinculin
Summary: An interaction between vinculin and an amphipathic helix of vinexin α is required for a conformational change in vinculin and promotion of YAP/TAZ nuclear localization on rigid ECM.
Upf1 regulates neurite outgrowth and branching by transcriptional and post-transcriptional modulation of Arc
Highlighted Article: Upf1-mediated inhibition of Arc gene expression may contribute to rapid and selective Arc induction in response to vigorous neuronal activity.
ADAM22 and ADAM23 modulate the targeting of the Kv1 channel-associated protein LGI1 to the axon initial segment
Summary: LGI1 is enriched at the axon initial segment of hippocampal neurons with ADAM22 and Kv1 channel proteins, and LGI1 mutations associated with epilepsy prevent its recruitment at that site.
The ER membrane protein complex promotes biogenesis of sterol-related enzymes maintaining cholesterol homeostasis
Highlighted Article: The ER membrane protein complex promotes biogenesis of key membrane-bound enzymes responsible for regulation of cholesterol biosynthesis and storage, an important determinant of mammalian cell viability.
The connexin 30 A88V mutant reduces cochlear gap junction expression and confers long-term protection against hearing loss
Summary: The Clouston syndrome-causing connexin 30 mutant (Cx30-A88V) provides long-term protection against age-related hair cell death and hearing loss in mice.
RABL2 positively controls localization of GPCRs in mammalian primary cilia
Summary: The atypical small GTPase RABL2 plays an important role in trafficking of ciliary GPCRs at the ciliary base in mammalian cells.
Contractility kits promote assembly of the mechanoresponsive cytoskeletal network
Summary: Cytosolic complexes of myosin II, cortexillin I and IQGAPs define the assembly and feedback mechanisms of a mechanoresponsive contractility controller.
The Drosophila Dbf4 ortholog Chiffon forms a complex with Gcn5 that is necessary for histone acetylation and viability
Highlighted Article: The Drosophila ortholog of Dbf4, Chiffon, binds Gcn5 to form a novel histone acetyltransferase complex that is essential for viability in flies, but is not required for DNA replication.
PREPRINT HIGHLIGHTS
Call for papers: Cell Biology of Mitochondria
We are welcoming submissions for our upcoming special issue: Cell Biology of Mitochondria. This issue will be coordinated by two Guest Editors: Ana J. Garcia-Saez (University of Cologne, Germany) and Heidi McBride (McGill University, Canada). Submission deadline: 1 October 2024.
Focal adhesion kinase signalling – tumour vulnerabilities and clinical opportunities
In this Review, David Schlaepfer and colleagues summarise 30 years of focal adhesion kinase (FAK) research with a view of the ongoing clinical testing of small-molecule FAK inhibitors. The authors touch on how FAK plays an important signal integration role and ultimately functions to guide cellular behaviour. Additionally, the authors discuss how FAK inhibition might present a powerful tool to influence the physiological response to other therapeutic approaches.
JCS-FocalPlane Training Grants
Early-career researchers - working in an area covered by JCS - who would like to attend a microscopy training course, please apply. Deadline dates for 2024 applications: 7 September (decision by week commencing 8 October 2024); 22 November (decision by week commencing 16 December).
Biologists @ 100 - join us in Liverpool in March 2025
We are excited to invite you to a unique scientific conference, celebrating the 100-year anniversary of The Company of Biologists, and bringing together our different communities. The conference will incorporate the Spring Meetings of the BSCB and the BSDB, the JEB Symposium Sensory Perception in a Changing World and a DMM programme on antimicrobial resistance. Find out more and register your interest to join us in March 2025 in Liverpool, UK.
Interview with Journal of Cell Science Editor Rob Parton
Read our interview with Rob Parton, a Cell Scientist to Watch, about his career journey leading him from the UK to the University of Queensland in Brisbane, Australia, the evolution of the membrane trafficking field and his advice for running a highly collaborative lab. As a Journal of Cell Science Editor, Rob brings to the journal his expertise in multiscale analysis of membrane function, membrane microdomains, lipid droplets and advanced microscopy techniques in cell biology.