2008
DOI: 10.1186/bcr2095
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TIMP-2 mediates the anti-invasive effects of the nitric oxide-releasing prodrug JS-K in breast cancer cells

Abstract: Introduction Tumor invasion and metastasis remain a major cause of mortality in breast cancer patients. High concentrations of nitric oxide (NO) suppress tumor invasion and metastasis in vivo. NO prodrugs generate large amounts of NO upon metabolism by appropriate intracellular enzymes, and therefore could have potential in the prevention and therapy of metastatic breast cancer.

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Cited by 54 publications
(35 citation statements)
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References 35 publications
(43 reference statements)
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“…TIMP-1 and TIMP-2 were known to have a particularly high affinity for MMP-9 and MMP-2, respectively (43). Many studies have found that TIMP-2 overexpression decreased invasion of endothelial and tumor cells both in vitro and in vivo (44,45). This study showed Angelica sinensis obviously increased TIMP-2 expression but decreased TIMP-1 expression, which can inhibit the enzyme activity of MMP-2 and MMP-9.…”
Section: Discussionmentioning
confidence: 73%
“…TIMP-1 and TIMP-2 were known to have a particularly high affinity for MMP-9 and MMP-2, respectively (43). Many studies have found that TIMP-2 overexpression decreased invasion of endothelial and tumor cells both in vitro and in vivo (44,45). This study showed Angelica sinensis obviously increased TIMP-2 expression but decreased TIMP-1 expression, which can inhibit the enzyme activity of MMP-2 and MMP-9.…”
Section: Discussionmentioning
confidence: 73%
“…On the other side, NO-releasing agents have been shown to suppress the metastatic tumor cell behavior in various in vitro and in vivo tumor models by decreasing angiogenesis and, therefore, tumor cell invasion. [9][10][11][12][13] The anti-invasiveness and anti-metastatic properties of NO have been attributed either to inhibition of angiogenic factors such as β-FGF and TGFβ1, [9][10][11] or induction of TIMP-2 production and inhibition of p38. 13 Alternatively, NO has been proposed to interfere with the storeoperated calcium mobilization through regulation of the NO/ cGMP-mediated mechanism, 10 or it can prevent the excessive formation of oxygen radicals and peroxynitrate (ONOO -), which cause cell damage and facilitate tumor metastasis.…”
Section: Resultsmentioning
confidence: 99%
“…These findings are in agreement with other studies showing the inhibitory effects of NO-releasing agents in metastatic tumor cell behavior both in vitro and in vivo. [9][10][11][12][13] The challenge regarding NO donors as therapeutic agents is to deliver NO in a sustained and controlled manner. NO donors that spontaneously generate large amounts of NO, independent of iNOS induction, are activated at physiological pH.…”
Section: Discussionmentioning
confidence: 99%
“…JS-K increased the percentages of acridine orange-stained cells in all breast cancer cell lines tested (Table I). On the other hand, JS-43-126, the non-NOreleasing control (22), did not increase the percentages of acridine orange-stained cells (Table I). Furthermore, JS-K hardly affected the formation of acidic vesicular organelles in HMECs or MCF-10A cells; at 5-μM concentration, JS-K increased the percentages of acridine orange-stained HMECs and MCF-10A cells only by 1.3% and 2.2%, respectively ( Fig.…”
Section: Js-k Induces Programmed Cell Death In Breast Cancer Cellsmentioning
confidence: 98%
“…The presumed metabolites of JS-K, such as DNP-SG, DNP, JS-9-29, and piperazine, and the non-NO-releasing control JS-43-126 (22) did not have any effect on the viability of MDA-MB-453 cells (Fig. 2 bottom panel) and MDA-MB-231 cells (not shown).…”
Section: Js-k Is More Cytotoxic To Breast Cancer Cells Than To Normalmentioning
confidence: 99%