1995
DOI: 10.1002/ijc.2910610121
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Inhibition of invasion, gelatinase activity, tumor take and metastasis of malignant cells by N‐acetylcysteine

Abstract: The thiol N-acetylcysteine (NAC) is currently considered one of the most promising cancer chemopreventive agents by virtue of its multiple and coordinated mechanisms affecting the process of chemical carcinogenesis. Recent studies have shown that an unpaired cysteine residue in the propeptide plays a key role in inactivation of latent metastasis-associated metalloproteinases: the present study was designed to assess whether NAC could also affect tumor take, invasion and metastasis of malignant cells. As assess… Show more

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Cited by 113 publications
(73 citation statements)
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“…48 It was proposed that NAC could prevent invasion of tumor cells by inhibiting type IV collagenase. 49 The discrepancy between these results and ours could be explained by differences in tumor cell types, route of tumor cell administration and time of NAC administration.…”
Section: Discussioncontrasting
confidence: 62%
“…48 It was proposed that NAC could prevent invasion of tumor cells by inhibiting type IV collagenase. 49 The discrepancy between these results and ours could be explained by differences in tumor cell types, route of tumor cell administration and time of NAC administration.…”
Section: Discussioncontrasting
confidence: 62%
“…After the incubation period, the invasive cells that migrated into the lower chamber were fixed, stained, and counted under a light microscope. Supernatants of cells from the invasion assay were centrifuged to remove particulates, the protein content was measured by the Bradford method (Bio-Rad), and gelatin zymography was done on identical sample amounts as described previously (12). Gels were then stained in 0.1% Coomassie brilliant blue followed by destaining.…”
Section: Reagentsmentioning
confidence: 99%
“…Samples were applied on a 12% polyacrylamide-sodium dodecyl sulfate (SDS) gel containing 0.1% gelatine and electrophoresed at 150 V during 3 h at 41C. After removal of SDS from the gel by incubating in 2.5% Triton X-100 (30 min, four times), the gel was incubated at 371C for 18 h in 40 mM Tris-HCl, pH 7.5, containing 10 mM CaCl 2 , 1 mM ZnCl 2 , 200 mM NaCl and stained with Coomassie blue R-250 (Albini et al, 1995). As positive control, MMP-2 and -9 obtained from Calbiochem were activated with 1 mM APMA as previously described (Paquette et al, 2003) and analysed by zymography.…”
Section: Secretion Of Mmp-2 From Cancer Cells Plated On Irradiated Mamentioning
confidence: 99%