Influence of dose and schedule on the therapeutic efficacy of131I-labelled monoclonal antibody 139H2 in a human ovarian cancer xenograft model

The aim of this study was to investigate the therapeutic efficacy of -radioimmunotherapy of ovarian cancer in mice using different fractionated treatment regimens. The study was performed using the monoclonal antibody MX35 F labeled with the -particle emitter .Methods. Nude mice were intraperitoneally inoculated with ~ cells of the cell line NIH:OVCAR-3. Four weeks later 6 groups of animals were given F as a single or as a repeated treatment of up to 6 times ( in each group). The fractionated treatments were given every seventh day. Control animals were treated with unlabeled F (). Eight weeks posttreatment the animals were sacrificed and the presence of macro- and microscopic tumors and ascites was determined.Results. The tumor-free fractions (TFFs) of the animals, defined as the fraction of animals with no macro- and microtumors and no ascites, were 0.17, 0.11, 0.39, 0.44, 0.44, and 0.67 when treated with F once or 2, 3, 4, 5, or 6 times, respectively. Repeated treatment 3 times or more resulted in a significantly higher () TFF than compared to treatment once or twice. The presence of ascites decreased from 15 out of 18 animals in the group given only one treatment to zero for the 2 groups given 5 or 6 fractions. Treatment with unlabeled F resulted in a TFF of zero.Conclusion. Weekly repeated intraperitoneal injections of tolerable amounts of activity of F of up to 6 times produced increased therapeutic efficacy without observed toxicity, indicating a potential increase of the therapeutic index.

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GRP137 promotes cell proliferation and metastasis through regulation of the PI3K/AKT pathway in human ovarian cancer

Tumori Journal ◽

10.5301/tj.5000703 ◽

2018 ◽

Vol 104 (5) ◽

pp. 330-337 ◽

Cited By ~ 4

Author(s):

Li-qian Zhang ◽

Su-qing Yang ◽

Xiang-dong Qu ◽

Xian-jun Chen ◽

Hong-sheng Lu ◽

...

Keyword(s):

Ovarian Cancer ◽

G Protein ◽

Biological Activities ◽

Xenograft Model ◽

Akt Pathway ◽

Ovarian Cancer Cells ◽

Human Ovarian Cancer ◽

G Protein Coupled Receptor ◽

Skov3 Cells ◽

G Protein Coupled

Purpose: Ovarian cancer is one of the leading causes of death for women worldwide. The present study aims to investigate the role of G protein-coupled receptor 137 (GPR137) in the biological activities of ovarian cancer cells. Methods: (QUERY: Please supply Methods for Abstract) Results: G protein-coupled receptor 137 was highly expressed in clinical ovarian cancer tissues and exhibited the highest protein levels in SKOV3 cells and OVCAR3 cells. Knockdown of GPR137 caused significant decreases in cell proliferative rates and colony formation abilities in SKOV3 cells and OVCAR3 cells and also inhibited the in vivo tumorigenesis in a xenograft model. It was observed that knockdown of GPR137 inhibited cell motility by up to 40% in SKOV3 cells and approximately 65% in OVCAR3 cells in wound-healing assay. Cell migration abilities were consistently inhibited by 68.2% in SKOV3 cells and 59.3% in OVCAR3 cells, whereas cell invasion abilities were inhibited by 64.0% and 74.2% in SKOV3 and OVCAR3 cells, respectively, after knockdown of GPR137. When GPR137 was depleted, epithelial markers were increased, while mesenchymal markers decreased. Conclusions: Our data suggest that GPR137 plays pro-oncogenic roles in ovarian cancer via regulation of the PI3K/AKT pathway. These observations might pave new insights into therapeutic strategies against human ovarian cancer.

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Fucosterol Suppresses the Progression of Human Ovarian Cancer by Inducing Mitochondrial Dysfunction and Endoplasmic Reticulum Stress

Marine Drugs ◽

10.3390/md18050261 ◽

2020 ◽

Vol 18 (5) ◽

pp. 261 ◽

Cited By ~ 1

Author(s):

Hyocheol Bae ◽

Jin-Young Lee ◽

Gwonhwa Song ◽

Whasun Lim

Keyword(s):

Ovarian Cancer ◽

Endoplasmic Reticulum ◽

Endoplasmic Reticulum Stress ◽

Cancer Cells ◽

Cell Cycle Progression ◽

Xenograft Model ◽

Tumor Formation ◽

Ovarian Cancer Cells ◽

Human Ovarian Cancer ◽

Anticancer Properties

Ovarian cancer is difficult to diagnose early and has high rates of relapse and mortality. Therefore, the treatment of ovarian cancer needs to be improved. Recently, several studies have been conducted in an attempt to develop anticancer drugs from naturally derived ingredients. Compared to traditional chemotherapy, natural compounds can overcome drug resistance with lower side effects. Fucosterol, a phytosterol present in brown algae, reportedly possesses many bioactive effects, including anticancer properties. However, the anticancer effects of fucosterol in ovarian cancer remain unexplored. Therefore, we investigated the effects of fucosterol on progression in human ovarian cancer cells. Fucosterol inhibited cell proliferation and cell-cycle progression in ovarian cancer cells. Additionally, fucosterol regulated the proliferation-related signaling pathways, the production of reactive oxygen species, mitochondrial function, endoplasmic reticulum stress, angiogenesis, and calcium homeostasis. Moreover, it decreased tumor formation in a zebrafish xenograft model. These results indicate that fucosterol could be used as a potential therapeutic agent in ovarian cancer.

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