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Neoplasma Vol.52, p.369-373, 2005 |
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| Title: MHC class I chain-related gene A (MICA) polymorphism and the different histological types of cervical cancer | ||
| Author: J. R., CHEN ; Y.J., LEE ; T., CHEN ; K.L., WANG ; C.W., DANG ; S.C., CHANG ; H.F., LIU ; Y. C., YANG ; | ||
| Abstract: Cervical cancer has been one of the most important gynecologic
cancer in Taiwan with incidence of 24/100,000 and mortality
of 8.7/100,000 annually. About 70–80% are squamous cell carcinoma;
the remainder are composed of various types of
adenocarcinoma, adenosquamous carcinoma and undifferentiated
carcinoma. The Major Histocompatibility Complex
(MHC) class I chain-related gene A (MICA) is expressed by
keratinocytes and epithelial cells and interacts with
gamma-delta T cells. Although MICA was not associated with
cervical cancer in the study of Northern Sweden, there are no
further studies about the association of MICA polymorphism and the
different histological types of cervical cancer. We analyzed the MICA polymorphism in 110 cervical cancer cases (88 squamous cell carcinoma, 12 adenocarcinoma and 10 adenosquamous carcinoma) and 82 randomly selected unrelated controls from 1994 to 2000 in the Mackay Memorial Hospital, Taipei, Taiwan. DNA was extracted part from leukocytes of peripheral blood, part from tumor tissue and 5 polymorphic microsatellite alleles (A4,A5,A5.1,A6,A9) of MICA were identified by a polymerase chain reaction-based (PCR) technique using ABI Prism 377-18 DNA sequencer (Applied Biosystems, Foster City, CA, USA). The phenotypes, alleles and genotypes of MICA gene were calculated. There was no association with cervical cancer patients and non-cervical cancer patients (p=0.337, 0.356 and 0.414). After dividing the cervical cancer patients into 3 major histological types (squamous cell carcinoma, adenocarcinoma and adenosquamous carcinoma), the result was still the same (p=0.598, 0.172 and 0.617) in our study. We found no association between MICA gene polymorphism and cervical cancer in Taiwan. Different histological types of cervical cancer also have no significant correlation with MICA gene polymorphism. It demonstrates that polymorphism of MICA gene bears no relation to cervical cancer and the different histological types of cervical cancer in Taiwan. We need further studies for identifying the factors causing the differentiation of cancer cells of the uterine cervix. |
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| Keywords: cervical cancer, MICA gene, polymorphism | ||
| Year: 2005, Volume: 52, Issue: | Page From: 369, Page To: 373 | |
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