IndraLab
Statements
reach
"The molecular underpinnings of the disassembly of 53BP1–USP28 complexes upon genotoxic stress remain to be investigated but can involve proteasomal degradation of 53BP1 (93) or its recruitment to modified histones at DNA damage sites (3), which could sterically interfere with USP28 binding.In our model, dimerization of USP28 limits unscheduled DNA replication at transcriptionally active loci by preventing ectopic recruitment of PAF1 to MYC."
sparser
"Strikingly, unlike unstressedp21 -/- cells that mostly lacked nuclear p53, in the stressed condition, p53 not only was stabilized in the nucleus, but also formed bright nuclear foci of various sizes co-localizing with 53BP1 and USP28 in ~30% of the cell population ( xref ), suggesting that 53BP1, USP28 and p53 interact with each other after a stressed mitosis, consistent with the known interaction between 53BP1 and p53 or USP28 ( xref ; xref ; xref )."
sparser
"While much remains to be learned about how the mitotic surveillance pathway functions to survey centrosomes, a plausible model is that in response to centrosome loss, 53BP1 binds to USP28 and p53 to facilitate USP28-dependent deubiquitination and activation of p53, leading to cell cycle arrest xref , xref ( xref )."
reach
"USP28 also modulates the DNA damage response (DDR) in cancer cells by deubiquitinating and stabilising the checkpoint kinase 2 (CHK2), the TP53-binding protein 1 (TP53BP1) and Claspin (CLSPN) [6, 7], thereby preventing apoptosis but establishing cell cycle arrest to facilitate DNA repair [8]."
reach
"The molecular underpinnings of the disassembly of 53BP1–USP28 complexes upon genotoxic stress remain to be investigated but can involve proteasomal degradation of 53BP1 (93) or its recruitment to modified histones at DNA damage sites (3), which could sterically interfere with USP28 binding.In our model, dimerization of USP28 limits unscheduled DNA replication at transcriptionally active loci by preventing ectopic recruitment of PAF1 to MYC."
sparser
"Strikingly, unlike unstressedp21 -/- cells that mostly lacked nuclear p53, in the stressed condition, p53 not only was stabilized in the nucleus, but also formed bright nuclear foci of various sizes co-localizing with 53BP1 and USP28 in ~30% of the cell population ( xref ), suggesting that 53BP1, USP28 and p53 interact with each other after a stressed mitosis, consistent with the known interaction between 53BP1 and p53 or USP28 ( xref ; xref ; xref )."
sparser
"While much remains to be learned about how the mitotic surveillance pathway functions to survey centrosomes, a plausible model is that in response to centrosome loss, 53BP1 binds to USP28 and p53 to facilitate USP28-dependent deubiquitination and activation of p53, leading to cell cycle arrest xref , xref ( xref )."