Category Ranking
98%
Total Visits
921
Avg Visit Duration
2 minutes
Citations
20
Article Abstract
Mechanical stress from cardiomyocyte contraction causes misfolded sarcomeric protein replacement. Sarcomeric maintenance utilizes localized pools of mRNAs and translation machinery, yet the importance of localized translation remains unclear. In this issue of the JCI, Haddad et al. identify the Z-line as a critical site for localized translation of sarcomeric proteins, mediated by ribosomal protein SA (RPSA). RPSA localized ribosomes at Z-lines and was trafficked via microtubules. Cardiomyocyte-specific loss of RPSA in mice resulted in mislocalized protein translation and caused structural dilation from myocyte atrophy. These findings demonstrate the necessity of RPSA-dependent spatially localized translation for sarcomere maintenance and cardiac structure and function.
Download full-text PDF |
Source |
|---|---|
| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC11213463 | PMC |
| http://dx.doi.org/10.1172/JCI181996 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Neddylation regulates the development and function of glutamatergic neurons.
Commun Biol
September 2025
Department of Molecular Neurobiology, Max Planck Institute for Multidisciplinary Sciences, Göttingen, Germany.
Neuronal development and function are orchestrated by a plethora of regulatory mechanisms that control the abundance, localization, interactions, and function of proteins. A key role in this regard is assumed by post-translational protein modifications (PTMs). While some PTM types, such as phosphorylation or ubiquitination, have been explored comprehensively, PTMs involving ubiquitin-like modifiers (Ubls) have remained comparably enigmatic (Ubls).
View Article and Find Full Text PDFDynamic association of H3K36me3 with pericentromeric heterochromatin regulates its replication time.
EMBO Rep
September 2025
Cell Biology and Epigenetics, Department of Biology, Technical University of Darmstadt, 64287, Darmstadt, Germany.
The flexibility of the spatio-temporal genome replication program during development and disease highlights the regulatory role of plastic epigenetic mechanisms over genetic determinants. Histone post-translational modifications are broadly implicated in replication timing control, yet the specific mechanisms through which individual histone marks influence replication dynamics, particularly in heterochromatin, remain unclear. Here, we demonstrate that H3K36me3 dynamically enriches at pericentromeric heterochromatin, composed of major satellite DNA repeats, prior to replication during mid S phase in mouse embryonic stem cells.
View Article and Find Full Text PDFCharacterization of the extrinsic and intrinsic signatures and therapeutic vulnerability of small cell lung cancers.
Signal Transduct Target Ther
September 2025
State Key Laboratory of Molecular Oncology & Department of Medical Oncology & Department of Pathology, National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China.
Small-cell lung cancer (SCLC), an aggressive neuroendocrine tumor strongly associated with exposure to tobacco carcinogens, is characterized by early dissemination and dismal prognosis with a five-year overall survival of less than 7%. High-frequency gain-of-function mutations in oncogenes are rarely reported, and intratumor heterogeneity (ITH) remains to be determined in SCLC. Here, via multiomics analyses of 314 SCLCs, we found that the ASCL1/MKI67 and ASCL1/CRIP2 clusters accounted for 74.
View Article and Find Full Text PDFAmorphous silicon resistors enable smaller pixels in photovoltaic retinal prosthesis.
J Neural Eng
September 2025
Hansen Experimental Physics Laboratory, Stanford University, 452 Lomita Mall, Stanford, California, 94305, UNITED STATES.
Clinical trials of the photovoltaic subretinal prosthesis PRIMA demonstrated feasibility of prosthetic central vision with resolution matching its 100 μm pixel width. To improve prosthetic acuity further, pixel size should be decreased. However, there are multiple challenges, one of which is related to accommodating a compact shunt resistor within each pixel that discharges the electrodes between stimulation pulses and helps increase the contrast of the electric field pattern.
View Article and Find Full Text PDFMechanisms of C5ORF13 in promoting epithelial-mesenchymal transition in hepatocellular carcinoma via eIF6 and the intervention of valproic acid.
Pathol Res Pract
September 2025
Chongqing Key Laboratory of Translational Research for Cancer Metastasis and Individualized Treatment, Chongqing University Cancer Hospital & Chongqing Cancer Institute & Chongqing Cancer Hospital, Chongqing 400030, China. Electronic address:
Objective: To investigate the mechanism by which C5ORF13 promotes epithelial-mesenchymal transition (EMT) in hepatocellular carcinoma (HCC) through interaction with eukaryotic translation initiation factor 6 (eIF6) and its clinical significance, and to identify the potential use of valproic acid (VPA) as an eIF6 inhibitor in HCC.
Methods: The expression of C5ORF13 in HCC and its prognostic impact were analyzed using GEPIA, UALCAN, and The HUMAN PROTEIN ATLAS databases. Lentiviral transfection technology was used to knock down or overexpress C5ORF13 and eIF6.