Cellular retention, cytotoxicity and morphological transformation by vanadium(IV) and vanadium(V) in BALB/3T3 cell lines

E. Sabbioni, G. Pozzi, A. Pintar, L. Casella, S. Garattini

Research output: Contribution to journalArticlepeer-review

Abstract

Cytotoxicity, morphological transformation and cellular retention have been studied in BALB/3T3 Cl A 31-1-1 cells for ammonium or sodium vanadate [vanadium(V)] and for vanadyl sulphate [vanadium(IV)]. A morphological transformation focus assay showed transforming activity for vanadium(V) (P <0.005 at concentrations of 3 x 10 -6 or higher) while vanadium(IV) was not transforming in the cells. Cytotoxicity was higher for vanadium(V) than for vanadium(IV) ; this was particularly clear at doses from 5 x 10 -6 to 5 x 10 -5 M. The cellular retention of both vanadate and vanadyl compounds at 24, 48 and 72 h incubation was similar. At concentrations lower than 10 -6 M vanadate, the retention was linear with the dose, while at higher exposures the vanadium taken up by the cells levelled off or slightly decreased. Exposure to 10 -6 M and 10 -5 M vanadium(V) for 3 and 24 h as well as to 10 -6 M for 48 and 72 h yielded > 94% vanadium in the cytosol, but exposure to a toxic dose (10 -5 M) for 48 and 72 h yielded 20% vanadium associated with cellular organelles, which suggests that some sites in the cytosol become saturated with vanadium. The corresponding gel-filtration experiments indicate that a redistribution of the element among the cytosol components occurs with time.

Original languageEnglish
Pages (from-to)47-52
Number of pages6
JournalCarcinogenesis
Volume12
Issue number1
Publication statusPublished - 1991

ASJC Scopus subject areas

  • Cancer Research
  • Physiology
  • Statistics, Probability and Uncertainty
  • Applied Mathematics
  • Physiology (medical)
  • Behavioral Neuroscience

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