1985
DOI: 10.1007/978-1-4684-7853-2_25
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Protein Synthetic Fidelity in Aging Human Fibroblasts

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Cited by 8 publications
(4 citation statements)
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“…In order to further test this hypothesis we used human diploid fibroblasts from Werner syndrome or Hutchinson-Gilford progeria syndrome patients known to exhibit persistent DNA damage and achieve senescence. [16][17][18] We found that these cultures indeed contain a high number of senescent cells compared to normal diploid human IMR90 fibroblasts ( Fig. 2A-B).…”
Section: Resultsmentioning
confidence: 75%
“…In order to further test this hypothesis we used human diploid fibroblasts from Werner syndrome or Hutchinson-Gilford progeria syndrome patients known to exhibit persistent DNA damage and achieve senescence. [16][17][18] We found that these cultures indeed contain a high number of senescent cells compared to normal diploid human IMR90 fibroblasts ( Fig. 2A-B).…”
Section: Resultsmentioning
confidence: 75%
“…O desdobramento normal da molécula de DNA pode ser alterado por diversos eventos físico-quí-micos, facilitando o aparecimento de erros na transcrição das proteínas celulares 5 . Algumas das modificações do DNA, identificadas com o envelhecimento, incluem sua associação com proteínas não nucleares, como o colágeno, procolágeno e fibronectina 26 ou encurtamento de cromossomas com perda de seqüências na cadeia molecular 27,28 .…”
Section: Teorias Com Base Em Danos De Origem Química (Damage Theories)unclassified
“…Por exemplo, Goldstein et al 27 concluíram que parece não haver mudanças substanciais na fidelidade da síntese de proteína com o envelhecimento. Mehlorn e Cole 41 demonstraram que algumas mutações podem diminuir a atividade de enzimas antioxidantes, mas que isso não teria relação com a velocidade do processo de envelhecimento celular.…”
Section: Teorias Com Base Em Danos De Origem Química (Damage Theories)unclassified
“…[ 35 ] Another set of experiments measured misrecognition of the purine base at the second position of the arginine codon in in‐vitro translation and no changes in fidelity were observed of ribosomes from aging mice for these types of changes. [ 36 ] However, initial experiments with human fibroblasts that were aged in vitro also did not show any increase in protein synthetic errors with increased passage, [ 37,38 ] whereas a later series of experiments by Luce and Bunn showed an 8‐fold increase of the protein synthesis error rate in human fibroblasts with in‐vitro aging, re‐vitalizing the Orgel hypothesis. [ 39 ] The authors of this study suggested that the different sensitivities of the used methods might, at least in part, explain the discrepancies.…”
Section: Introductionmentioning
confidence: 99%