Abstract:
:Metaphase comparative genomic hybridisation (CGH) studies indicate that chromosomes 4, 5, 6, 13, 14, 15 and 18 are frequently deleted in primary ovarian cancers (OCs). Therefore we used microcell-mediated chromosome transfer (MMCT) to establish the functional effects of transferring normal copies of these chromosomes into 2 epithelial OC cell lines (TOV112D and TOV21G). The in vitro neoplastic phenotype (measured as anchorage dependent and independent growth and invasion) was compared between recipient OC cell lines and multiple MMCT hybrids. Chromosomes 6 and 18 showed strong evidence of functional, neoplastic suppression for multiple hybrids in both cell lines. We also found evidence in 1 cancer cell line suggesting that chromosomes 4, 13 and 14 may also cause functional suppression. Array CGH and microsatellite analyses were used to characterise the extent of genomic transfer in chromosome 6 and 18 hybrids. A 36 MB deletion on chromosome 6 in 2 hybrids from 1 cell line mapped the candidate region proximal to 6q15 and distal to 6q22.2; and an approximately 10 MB candidate region spanning the centromere on chromosome 18 was identified in 2 hybrids from the other cell line. These data support reported functional effects of chromosome 6 in OC cell lines; but to our knowledge, this is the first time that functional suppression for chromosome 18 has been reported. This suggests that these chromosomes may harbour tumour suppressor-"like" genes. The future identification of these genes may have a significant impact on the understanding and treatment of the disease and the identification of novel therapeutic targets.
journal_name
Int J Cancerjournal_title
International journal of cancerauthors
Dafou D,Ramus SJ,Choi K,Grun B,Trott DA,Newbold RF,Jacobs IJ,Jones C,Gayther SAdoi
10.1002/ijc.24058subject
Has Abstractpub_date
2009-03-01 00:00:00pages
1037-44issue
5eissn
0020-7136issn
1097-0215journal_volume
124pub_type
杂志文章abstract::Treatment of mouse Lewis lung carcinoma with razoxane or dacarbazine was protracted for 10 transplant generations. While the capacity of the treated tumors to grow locally in immuno-competent or in immuno-depressed hosts was retained and not significantly modified, the metastatic phenotype was eliminated when the trea...
journal_title:International journal of cancer
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doi:10.1002/(sici)1097-0215(19970917)72:6<1056::aid-ij
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abstract::We have studied the occurrence and association of 11q deletions with other chromosomal imbalances in Stage 4 neuroblastomas. To this purpose we have performed comparative genomic hybridization (CGH) analysis on 50 Stage 4 neuroblastomas and these data were analyzed together with those from 33 previously published case...
journal_title:International journal of cancer
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abstract::The emergence of mutations in the androgen receptor (AR) gene is a recurrent event during progression of prostate cancer (PCa) on androgen ablation therapy. In this study, we show that nonsense mutations that lead to carboxyl-terminal end truncated ARs are found at high frequency in metastatic PCas. Transcriptional ac...
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journal_title:International journal of cancer
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abstract::It is thought that TIL can be activated in vitro by rIL-2 and acquire specific anti-tumor activity. In this study, we investigated this possibility, using lymphocytes isolated from primary lung cancer tissues. In a first series of experiments, TILs and autologous PBLs from 16 patients were cultured in rIL-2 from 7 to ...
journal_title:International journal of cancer
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abstract::Non-specific cross-reacting antigens (NCA-95 = CD66b and NCA-50/90 = CD66c) are members of the CEA (carcinoembryonic antigen = CD66e) family. Analysis of mRNA levels of CD66c in colon tumors suggests that this antigen is strongly up-regulated compared to its normal counterpart and could, therefore, be of clinical inte...
journal_title:International journal of cancer
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abstract::Thirty-one different long-term established human carcinoma culture cell lines were examined for the presence or absence of receptors for the Fc portion of immunoglobulin G (IgG) ("Fc receptors"), the third component of complement (C3 receptors), sheep erythrocytes and mouse erythrocytes. Included in the catalogue of l...
journal_title:International journal of cancer
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journal_title:International journal of cancer
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journal_title:International journal of cancer
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更新日期:2012-04-01 00:00:00
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journal_title:International journal of cancer
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更新日期:2017-01-15 00:00:00
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journal_title:International journal of cancer
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doi:10.1002/(sici)1097-0215(19970410)71:2<183::aid-ijc
更新日期:1997-04-10 00:00:00
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journal_title:International journal of cancer
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更新日期:1999-04-20 00:00:00
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journal_title:International journal of cancer
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journal_title:International journal of cancer
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更新日期:1978-02-15 00:00:00
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journal_title:International journal of cancer
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更新日期:2011-07-01 00:00:00
abstract::Vascular endothelial growth factor-A (VEGF-A) plays an important role in tumour angiogenesis and cancer progression. VEGF gene variation may influence VEGF levels and therefore cancer susceptibility and progression. We studied the role of VEGF single nucleotide polymorphisms and haplotypes in breast cancer susceptibil...
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更新日期:2007-09-01 00:00:00
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journal_title:International journal of cancer
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journal_title:International journal of cancer
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abstract::The presence of TGF alpha mRNA has been reported previously to occur in primary colon cancers. We report the expression of the normal 4.5 kb TGF alpha transcript in the mucosa of the normal human gastro-intestinal tract from oesophagus through to colon. The highest levels of human TGF alpha mRNA occurred in the duoden...
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