Abstract:
:It is known that interferon-gamma (IFN-gamma) is produced by activated T and NK lymphoid cells, mononuclear cells, and macrophage and dendritic cells. Our previous studies have shown that IFN-gamma-like immunoreactivity also appears in human adrenal cortical tumour and phaeochromocytoma. To investigate whether human tumour cells can produce IFN-gamma, we examined 429 biopsy specimens of 30 kinds of tumour and tumour-surrounding tissues in adrenal glands and in kidneys by using immunohistochemistry and in situ hybridisation. IFN-gamma immunoactivity was shown in 34.3% of the adrenal cortical adenomas, 50% of the adrenal cortical carcinomas, 26.7% of the phaeochromocytomas, 26.7% of the clear cell renal cell carcinomas (RCCs), 22% of the adrenal cortexes and 40% of medullas adjacent to tumours. The positive samples and expression areas were well overlapped between the IFN-gamma mRNA and the immunohistochemistry staining. Western blot analysis has further confirmed the immunohistochemistry results by showing a distinct IFN-gamma band corresponding to 17.4 kDa in tissue extracts from adrenal cortical adenoma, phaeochromocytoma and clear cell RCCs. These results indicate that IFN-gamma is produced by some types of tumour cells, suggesting it may play a dual role in the development of these tumours.
journal_name
Br J Cancerjournal_title
British journal of cancerauthors
Li Q,Zhang XQ,Nie L,Chen GS,Li H,Zhang F,Zhang LY,Hong L,Wang SF,Wang Hdoi
10.1038/sj.bjc.6603870subject
Has Abstractpub_date
2007-08-06 00:00:00pages
420-5issue
3eissn
0007-0920issn
1532-1827pii
6603870journal_volume
97pub_type
杂志文章abstract::The largest single underlying cause of hepatocellular carcinoma (HCC) worldwide is hepatitis B virus (HBV) infection. Hepatitis B virus increases cellular oxidative stress and the development of HCC occurs after a long latency period. The study was carried out to determine whether mitochondrial DNA abnormalities were ...
journal_title:British journal of cancer
pub_type: 杂志文章
doi:10.1038/sj.bjc.6602496
更新日期:2005-04-11 00:00:00
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journal_title:British journal of cancer
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journal_title:British journal of cancer
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更新日期:2013-05-28 00:00:00
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pub_type: 杂志文章
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pub_type: 杂志文章
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pub_type: 杂志文章
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更新日期:1995-10-01 00:00:00
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pub_type: 杂志文章
doi:10.1038/bjc.1996.29
更新日期:1996-01-01 00:00:00
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pub_type: 杂志文章
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更新日期:1994-01-01 00:00:00
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pub_type: 杂志文章
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