ABSTRACT
A novel serous surface papillary carcinoma of the ovary (SSPC) cell line, HYKSSPC, was established successfully. Carcinoma cells were obtained from ascitic fluid of a 60-year-old Japanese woman. The population doubling time was 51.4 h. A phase contrast micrograph showed a pavement stone-like arrangement without contact inhibition. The chromosome number showed a wide distribution of aneuploidy, and the mode was in 46-47. An immunocytochemical study showed that CA125, BerER4 and cytokeratin were positive and that CEA, calretinin and thrombomodulin were negative. This cell line preserved some characters of the adenocarcinoma while growing in vitro. A chemosensitivity test revealed that HYKSSPC cells were sensitive to CDDP (cis-platinum), 5-fluorouracil, mitomycin C, paclitaxel and irinotecan. To our knowledge, HYKSSPC is the first established cell line derived from SSPC, and it may offer some useful information for investigating this disease.
Subject(s)
Cell Culture Techniques/methods , Cystadenocarcinoma, Papillary/pathology , Ovarian Neoplasms/pathology , Aneuploidy , Animals , Antineoplastic Agents/pharmacology , CA-125 Antigen/analysis , Cell Division , Cell Line, Tumor , Cystadenocarcinoma, Papillary/genetics , Cystadenocarcinoma, Papillary/metabolism , Drug Resistance, Neoplasm , Female , Humans , Mice , Mice, Inbred BALB C , Middle Aged , Neoplasm Transplantation , Ovarian Neoplasms/genetics , Ovarian Neoplasms/metabolism , Transplantation, HeterologousABSTRACT
A cell line designated HTLS was established from the retroperitoneal liposarcoma. The HTLS line showed stable proliferation without interruption for 2 years and subcultivated over 35 times. The cells were elongated fibrous and spindle in shape, and neoplastic and pleomorphic features. The multinucleated giant cells with fine cytoplasm were seen. The cells proliferated slowly and the population doubling time was about 90 hours. The chromosome number showed a wide distribution of aneuploidy, the mode was hyperdiploid range (51-52), and many marker chromosomes were observed. The cells were transplantable into the submucosa of immunesuppressed hamster's cheek pouch and produced liposarcoma, while were not transplantable into subcutis of nude mice
Subject(s)
Liposarcoma/pathology , Adult , Aneuploidy , Animals , Cell Line, Tumor , Cell Proliferation , Chromosomes, Human/genetics , Cricetinae , Female , Humans , Karyotyping , Liposarcoma/genetics , Mesocricetus , Mice , Mice, Inbred BALB C , Mice, Nude , Neoplasm Transplantation , Retroperitoneal Neoplasms/genetics , Retroperitoneal Neoplasms/pathology , Time FactorsABSTRACT
OBJECTIVES: TGP (thermo-reversible gelation polymer) is a high molecular compound that has so-gel transmitting temperature of 221C Since solid cancer tissue grows in this polymer three-dimensionally, and fibroblasts scarcely grow in it, TGP is suitable for chemosensitivity assays for solid tumors. In this study, a chemosensitivity test using TGP was applied to recurrent gynecologic cancer patients in order to evaluate its utility and efficacy. In some ovarian cancer cases, expression of anticancer drug resistance-related proteins was also analyzed. METHODS: Recurrent tumor tissues were surgically obtained with informed consent. After these tissues were minced and incubated for 4 days with CDDP, mitomycin C, 5-fluorouracil, paclitaxel, and CPT-11, the sensitivity against these drugs was estimated. Western blotting was performed in 8 recurrent ovarian cancer tissues in order to analyze the expression of Bcl-2, MRP2, BCRP, and GST-pi. RESULTS: The total evaluability rate of this assay was 90.6% (29/32). Sensitive drugs could be determined in 5 of 7 ascites samples (71.4%) and in 2 of 3 intra-tumoral fluid samples (66.7%). The overall clinical response rate of chemotherapy determined by these results was 50.0%. There were significant correlations between the IC50 of CDDP and Bcl-2, BCRP, GST-pi, and between that of 5-FU and MRP 2. CONCLUSIONS: Although this was a preliminary study, the chemosensitivity test using this new material appears to be useful for designing 'made-to order' salvage chemotherapy for pretreated recurrent gynecologic patients. In order to overcome multidrug resistance, the mechanisms of multidrug resistance should be further investigated.
Subject(s)
Antineoplastic Agents/pharmacology , Culture Media , Drug Screening Assays, Antitumor/methods , Genital Neoplasms, Female/pathology , Cell Culture Techniques , Drug Resistance, Neoplasm , Female , Gels , Humans , Multidrug Resistance-Associated Protein 2 , Neoplasm Recurrence, Local , Polymers , Temperature , Tumor Cells, CulturedABSTRACT
Our previous work showed that melatonin (N-acetyl-5-methoxytryptamine) inhibits proliferation of the human endometrial cancer cell line, Ishikawa, which is estrogen receptor-positive. The aim of the present study was to determine whether Ishikawa cells possess membrane melatonin receptors. Binding of the radioligand 2-[125I]-iodomelatonin to membrane preparations obtained from Ishikawa cells was detectable, saturable and stable. Scatchard analysis revealed that the dissociation constant (Kd) of the binding sites was 179.0 pm (similar to that of the MT2 [Mel1b] melatonin receptor subtype), and that the concentration (Bmax) of the binding sites was 12.9 fmol/mg protein. Luzindole, a selective MT2 melatonin receptor antagonist, significantly suppressed binding of 2-[125I]-iodomelatonin at all concentrations tested (10(-8) to 10(-4) m). These results suggest that the MT2 melatonin receptor subtype is present in the membranes of Ishikawa cells, and that the antiproliferative effect of melatonin on Ishikawa cells is mediated via the MT2 receptor. This may have implications for the use of melatonin in endometrial cancer therapy.
Subject(s)
Endometrial Neoplasms/metabolism , Endometrium/metabolism , Melatonin/metabolism , Receptors, Estrogen/metabolism , Binding Sites , Female , Humans , Receptors, Melatonin/antagonists & inhibitors , Receptors, Melatonin/metabolism , Time Factors , Tryptamines/pharmacology , Tumor Cells, CulturedABSTRACT
We recently established a cell line (designated 371M) derived from an ovarian mucinous cystadenocarcinoma. The tumor cells were obtained from the ascitic fluid of a 54-year-old Japanese woman while she was undergoing surgery. Adjuvant chemotherapy (combined paclitaxel and carboplatin) was administered, but was ineffective, and she died about 4 months after surgery. The 371M cells continuously propagated in vitro over a period of about 50 months and, to date, have undergone over 100 passages. They proliferated in a monolayered sheet with doubling times of 84 h and 37 h in the 10th and 34th passages, respectively. When transplanted into nude mice, the tumor histopathologically resembled the structure of the original tumor. The 371M cells secreted high levels of CA125 and CA19-9 into the culture medium. There were several abnormal chromosomes in all karyotypes selected at random. Sensitivity of 371M cells to a variety of anti-cancer drugs was examined by in vitro MTT assay, and the results suggested that CPT-11 and CDDP were more effective against 371M cells than other anti-cancer agents.
