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BNIP3 regulates AT101 [(-)-gossypol] induced death in malignant peripheral nerve sheath tumor cells.

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Malignant peripheral nerve sheath tumors (MPNSTs) are aggressive Schwann cell-derived sarcomas and are the leading cause of mortality in patients with neurofibromatosis type 1 (NF1). Current treatment modalities have been largely ineffective, resulting in a high rate of MPNST recurrence and poor

The genotoxic effects of anti-cancer drug gossypol on human lymphocytes and its mitigation by melatonin.

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OBJECTIVE To determine melatonin as a potential natural antioxidant to mitigate the genotoxic effects of promising anti-cancer drug gossypol in human lymphocytes. BACKGROUND Gossypol, is a polyphenolic compound naturally occurring in cotton seed, was originally identified as a male contraceptive but

Lactic dehydrogenase isozymes, 31P magnetic resonance spectroscopy, and in vitro antimitochondrial tumor toxicity with gossypol and rhodamine-123.

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Three compounds that share specific antimitochondrial properties are gossypol, rhodamine-123, and lonidamine. We compare the antiproliferative activities of these drugs against six human cell lines derived from breast (T47-D), pancreas (MiaPaCa, RWP-2), prostate (DU-145), colon (HCT-8), and cervix

Inhibition of human prostate cancer cells growth by gossypol is associated with stimulation of transforming growth factor-beta.

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Gossypol (GP), an antifertility agent in males, is also capable of inhibiting the proliferation of a wide range of cancer cells in vivo and in vitro. Thus, in this study we investigated the effect of GP on the growth of human androgen-independent prostate cancer cell line (PC3). The results showed

Targeting apoptosis in the hormone- and drug-resistant prostate cancer cell line, DU-145, by gossypol/zoledronic acid combination.

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Possible synergistic cytotoxic and apoptotic effects of gossypol with zoledronic acid on DU-145 cells were explored, along with the rationale behind any observed synergism due to the different apoptotic proteins involved. XTT cell proliferation assay was used to assess the cytotoxicity, and DNA

Effects of serum on (-)-gossypol-suppressed growth in human prostate cancer cells.

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BACKGROUND Gossypol, a natural polyphenolic compound present in cottonseeds, possesses antiproliferative and pro-apoptotic effects in in vivo and in vitro models. There are two enantiomers, (+)-gossypol and (-)-gossypol, the latter being a more potent inhibitor of cancer cell growth. Here, the

The effect of the association of Gossypol and Lonidamine on the energy metabolism of Ehrlich ascites tumor cells.

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The effect of the association of Gossypol and Lonidamine on the energy metabolism of Ehrlich ascites tumor cells has been investigated. The action of the drug on tumor cells was studied by addition of the drugs to cells harvested from Swiss male mice. The results may be summarized as follows: (1)

Valproic Acid Enhances the Anti-tumor Effect of (-)-gossypol to Burkitt Lymphoma Namalwa Cells.

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Burkitt lymphoma is a highly aggressive B-cell neoplasm. New therapeutic methods are needed to overcome the adverse effect of intensive chemotherapy regimens. Valproic acid and (-)-gossypol are two kinds of chemical compounds used as new anti-tumor drugs in recent years. To investigate the

Structure-activity studies on gossypol in tumor cell lines.

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Gossypol [(2,2'-binaphthalene)-8,8'-dicarboxaldehyde-1,1',6,6',7,7'-hexahydroxy-5,5'-diisopropyl-3,3'-dimethyl] 1a is a naturally occurring compound extracted from the cotton plant and has been extensively studied as an oral male contraceptive. Its favorable toxicity profile, and the more recent

Gossypol decreases tumor necrosis factor-α-induced intercellular adhesion molecule-1 expression via suppression of NF-κB activity.

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Gossypol is a yellowish polyphenolic compound originally from cotton plant, which has been shown to exert a potential for anti-cancer and anti-inflammatory effects. However, its molecular mechanism is not thoroughly understood on breast cancer cells known to highly express intercellular adhesion

Gossypol Suppresses Growth of Temozolomide-Resistant Glioblastoma Tumor Spheres.

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Temozolomide is the current first-line treatment for glioblastoma patients but, because many patients are resistant to it, there is an urgent need to develop antitumor agents to treat temozolomide-resistant glioblastoma. Gossypol, a natural polyphenolic compound, has been studied as a monotherapy or

Liposomes containing (-)-gossypol-enriched cottonseed oil suppress Bcl-2 and Bcl-xL expression in breast cancer cells.

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OBJECTIVE We have demonstrated that (-)-gossypol-enriched cottonseed oil [(-)-GPCSO] can down-regulate Bcl-2 expression in MCF-7 and primary cultured human breast cancer epithelial cells (PCHBCECs). However, this agent has not been evaluated in vivo due to its limited solubility. We aimed to develop

Nonpeptidic small-molecule inhibitor of Bcl-2 and Bcl-XL, (-)-Gossypol, enhances biological effect of genistein against BxPC-3 human pancreatic cancer cell line.

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OBJECTIVE In pancreatic cancer, several important survival molecules such as EGFR, NF-kappaB, and Bcl-2 or Bcl-XL are highly activated. Thus, agents that inhibit NF-kappaB activation, together with agents that directly inhibit Bcl-2 or Bcl-XL protein function, may lead to enhanced cell killing.

Antiproliferative activity of gossypol and gossypolone on human breast cancer cells.

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Gossypol is a polyphenolic aldehyde occurring naturally in cottonseed that produces antisteroidogenic activity in vivo, has been extensively investigated as a male contraceptive agent, and has demonstrated anticancer activity. Gossypolone, the major metabolite of gossypol, also prossesses

Injectable (-)-gossypol-loaded Pluronic P85 micelles for cancer chemoradiotherapy.

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The aim of tumor-specific chemoradiotherapy is to achieve synergistic anticancer effects with clinically acceptable toxicity. Our previous studies showed that Pluronic P85 augments radiation cancer cell killing of (±)-gossypol in vitro. In this study, the radiosensitizing effect of (-)-gossypol,

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