ArticleScientific reports2015
VRK1 regulates Cajal body dynamics and protects coilin from proteasomal degradation in cell cycle.
Article in Scientific reports, 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 26 papers.
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Who cites it
26 citing papers in PubMed, 71 citations in OpenAlex.
- Proximity labeling at H3K9me3 reveals VRK-1 regulate global chromatin distribution inbioRxiv : the preprint server for biology · 2026Article
- NovelNeurology. Genetics · 2026Article
- Structure-based discovery of selective vaccinia-related kinase 1 inhibitors and fluorogenic active-site probes.The Journal of biological chemistry · 2026Article
- A Novel Role for Coilin in Vertebrate Innate Immunity.FASEB journal : official publication of the Federation of American Societies for Experimental Biology · 2025Article
- Nuclear functions regulated by the VRK1 kinase.Nucleus (Austin, Tex.) · 2024Review
- Pathogenic effects of Leu200Pro and Arg387His VRK1 protein variants on phosphorylation targets and H4K16 acetylation in distal hereditary motor neuropathy.Journal of molecular medicine (Berlin, Germany) · 2024Article
- Coilin and Cajal bodies.Nucleus (Austin, Tex.) · 2023Review
- Review
- The pattern of histone H3 epigenetic posttranslational modifications is regulated by the VRK1 chromatin kinase.Epigenetics & chromatin · 2023Article
- VRK1 Kinase Activity Modulating Histone H4K16 Acetylation Inhibited by SIRT2 and VRK-IN-1.International journal of molecular sciences · 2023Article
- A point mutation in human coilin prevents Cajal body formation.Journal of cell science · 2022Article
- Dysfunctional Homozygous VRK1-D263G Variant Impairs the Assembly of Cajal Bodies and DNA Damage Response in Hereditary Spastic Paraplegia.Neurology. Genetics · 2021Article
- VRK1 Depletion Facilitates the Synthetic Lethality of Temozolomide and Olaparib in Glioblastoma Cells.Frontiers in cell and developmental biology · 2021Article
- VRK1 Phosphorylates Tip60/KAT5 and Is Required for H4K16 Acetylation in Response to DNA Damage.Cancers · 2020Article
- Enzymatic Noncovalent Synthesis.Chemical reviews · 2020Review
- VRK1 (Y213H) homozygous mutant impairs Cajal bodies in a hereditary case of distal motor neuropathy.Annals of clinical and translational neurology · 2020Article
- VRK1 functional insufficiency due to alterations in protein stability or kinase activity of human VRK1 pathogenic variants implicated in neuromotor syndromes.Scientific reports · 2019Article
- Olaparib and ionizing radiation trigger a cooperative DNA-damage repair response that is impaired by depletion of the VRK1 chromatin kinase.Journal of experimental & clinical cancer research : CR · 2019Article
- A novel mutation in VRK1 associated with distal spinal muscular atrophy.Journal of human genetics · 2019Article
- VRK1 and AURKB form a complex that cross inhibit their kinase activity and the phosphorylation of histone H3 in the progression of mitosis.Cellular and molecular life sciences : CMLS · 2018Article
Corrections and comments
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Authors and funding
6 authors at 4 institutions in 2 countries.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Cajal bodies (CBs) are nuclear organelles associated with ribonucleoprotein functions and RNA maturation. CBs are assembled on coilin, its main scaffold protein, in a cell cycle dependent manner. The Ser-Thr VRK1 (vaccinia-related kinase 1) kinase, whose activity is also cell cycle regulated, interacts with and phosphorylates coilin regulating assembly of CBs. Coilin phosphorylation is not necessary for its interaction with VRK1, but it occurs in mitosis and regulates coilin stability. Knockdown of VRK1 or VRK1 inactivation by serum deprivation causes a loss of coilin phosphorylation in Ser184 and of CBs formation, which are rescued with an active VRK1, but not by kinase-dead VRK1. The phosphorylation of coilin in Ser184 occurs during mitosis before assembly of CBs. Loss of coilin phosphorylation results in disintegration of CBs, and of coilin degradation that is prevented by proteasome inhibitors. After depletion of VRK1, coilin is ubiquitinated in nuclei, which is partly mediated by mdm2, but its proteasomal degradation occurs in cytosol and is prevented by blocking its nuclear export. We conclude that VRK1 is a novel regulator of CBs dynamics and stability in cell cycle by protecting coilin from ubiquitination and degradation in the proteasome, and propose a model of CB dynamics.
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