title: Phosphorylation of NDRG1 is temporally and spatially controlled during the cell cycle.
abstract: The tumour metastasis suppressor, N-myc Downstream Regulated Gene (NDRG) 1, is a by the protein kinases SGK1 and GSK3β, but the relevance of its phosphorylation remains unclear. Analysis of HCT116 cells, either proficient or deficient for p53 revealed NDRG1 protein expression and phosphorylation by SGK1 was increased basally in p53-deficient cells. Treatment with the cell cycle inhibitors, aphidicolin or nocodazole also revealed increased NDRG1 phosphorylation in p53-deficient cells. Finally, phosphorylated NDRG1 was found to co-localise with γ-tubulin on centromeres and also to the cleavage furrow during cytokinesis. Taken together, this work demonstrates that NDRG1 phosphorylation, by the protein kinase SGK1, is temporally and spatially controlled during the cell cycle, suggesting a role for NDRG1 in successful mitosis.
authors.affiliation: Centre for Cancer Research & Cell Biology, School of Medicine, Dentistry & Biomedical Sciences, Queen's University Belfast, CCRCB Building, 97 Lisburn Road, Belfast, BT9 7BL, UK.
authors.forename: Catherine
authors.initials: C
authors.lastname: McCaig
authors.forename: Louisa
authors.initials: L
authors.lastname: Potter
authors.forename: Olga
authors.initials: O
authors.lastname: Abramczyk
authors.forename: James T
authors.initials: JT
authors.lastname: Murray
mesh_terms: D002453:Cell Cycle; D018797:Cell Cycle Proteins / Q000235:genetics / Q000378:metabolism*; D045744:Cell Line, Tumor; D002503:Centromere / Q000378:metabolism; D015536:Down-Regulation; D006801:Humans; D017874:Immediate-Early Proteins / Q000378:metabolism*; D047908:Intracellular Signaling Peptides and Proteins / Q000235:genetics / Q000378:metabolism*; D008938:Mitosis; D010766:Phosphorylation; D017346:Protein Serine-Threonine Kinases / Q000378:metabolism*; D016159:Tumor Suppressor Protein p53 / Q000235:genetics / Q000378:metabolism; D000099184:Serum-Glucocorticoid Regulated Kinases; D000099259:N-myc Downstream-Regulated Gene 1 Protein
chemical_list: D018797:Cell Cycle Proteins; D017874:Immediate-Early Proteins; D047908:Intracellular Signaling Peptides and Proteins; D017346:Protein Serine-Threonine Kinases; D016159:Tumor Suppressor Protein p53; D000099184:Serum-Glucocorticoid Regulated Kinases; D000099259:N-myc Downstream-Regulated Gene 1 Protein