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Sökning: WFRF:(Paulet D.)

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1.
  • Macari, F., et al. (författare)
  • TRM6/61 connects PKCα with translational control through tRNAiMet stabilization : impact on tumorigenesis
  • 2016
  • Ingår i: Oncogene. - : Springer Science and Business Media LLC. - 0950-9232 .- 1476-5594. ; 35:14, s. 1785-1796
  • Tidskriftsartikel (refereegranskat)abstract
    • Accumulating evidence suggests that changes of the protein synthesis machinery alter translation of specific mRNAs and participate in malignant transformation. Here we show that protein kinase C [alpha] (PKC[alpha]) interacts with TRM61, the catalytic subunit of the TRM6/61 tRNA methyltransferase. The TRM6/61 complex is known to methylate the adenosine 58 of the initiator methionine tRNA (tRNAiMet), a nuclear post-transcriptional modification associated with the stabilization of this crucial component of the translation-initiation process. Depletion of TRM6/61 reduced proliferation and increased death of C6 glioma cells, effects that can be partially rescued by overexpression of tRNAiMet. In contrast, elevated TRM6/61 expression regulated the translation of a subset of mRNAs encoding proteins involved in the tumorigenic process and increased the ability of C6 cells to form colonies in soft agar or spheres when grown in suspension. In TRM6/61/tRNAiMet-overexpressing cells, PKC[alpha] overexpression decreased tRNAiMet expression and both colony- and sphere-forming potentials. A concomitant increase in TRM6/TRM61 mRNA and tRNAiMet expression with decreased expression of PKC[alpha] mRNA was detected in highly aggressive glioblastoma multiforme as compared with Grade II/III glioblastomas, highlighting the clinical relevance of our findings. Altogether, we suggest that PKC[alpha] tightly controls TRM6/61 activity to prevent translation deregulation that would favor neoplastic development.
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2.
  • Ashwood, C., et al. (författare)
  • Proceedings of the EuBIC-MS 2020 Developers’ Meeting
  • 2020
  • Ingår i: EuPA Open Proteomics. - : Elsevier B.V.. - 2212-9685. ; 24, s. 1-6
  • Tidskriftsartikel (refereegranskat)abstract
    • The 2020 European Bioinformatics Community for Mass Spectrometry (EuBIC-MS) Developers’ meeting was held from January 13th to January 17th 2020 in Nyborg, Denmark. Among the participants were scientists as well as developers working in the field of computational mass spectrometry (MS) and proteomics. The 4-day program was split between introductory keynote lectures and parallel hackathon sessions. During the latter, the participants developed bioinformatics tools and resources addressing outstanding needs in the community. The hackathons allowed less experienced participants to learn from more advanced computational MS experts, and to actively contribute to highly relevant research projects. We successfully produced several new tools that will be useful to the proteomics community by improving data analysis as well as facilitating future research. All keynote recordings are available on https://doi.org/10.5281/zenodo.3890181.
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