Abstract
Objectives: Oncogenic activation of the Wnt/β-catenin signaling pathway is common in human cancers, including cervical cancer. The secreted frizzled-related proteins (SFRPs) function as negative regulators of Wnt signaling and play an important role in carcinogenesis. Frequent promoter hypermethylation of SFRPs has been identified in human cancers; however, the precise role of SFRPs in cervical cancer is not clear. Methods: The methylation status of SFRPs gene family was analyzed in two cervical cancer cell lines and a full spectrum of cervical neoplasia, including 45 low-grade squamous intraepithelial lesions (LSIL), 49 high-grade squamous intraepithelial lesions (HSIL), 109 squamous cell carcinomas (SCC), and 45 normal controls. Results: The SFRP1 promoter was hypermethylated in 33.9% of SCC, 8.2% of HSIL, 2.2% of LSIL, but not in normal tissues. The SFRP2 promoter was hypermethylated in 80.7% of SCC, 16.3% of HSIL, 15.6% LSIL and 4.4% normal tissues. The SFRP4 promoter was hypermethylated in 67.9% of SCC, 36.7% of HSIL, 4.4% of LSIL, but not in normal tissues. The SFRP5 promoter was hypermethylated in 10.1% of SCC, 4.1% of HSIL, 13.3% of LSIL and 4.4% normal tissues. The frequency of SFRP1, SFRP2 and SFRP4 promoter methylation in tumors was significantly higher than in normal, LSIL, and HSIL samples (P <0.0001). SFRP5 methylation was significantly different in patients with or without lymph-node metastases (0% vs 15.2%, respectively, P <0.05). Conclusions: Our data suggest that promoter hypermethylation of SFRP1, SFRP2 and SFRP4 is associated with cervical carcinogenesis, which could be used for molecular screening of cervical neoplasias in future.
| Original language | English |
|---|---|
| Pages (from-to) | 301-306 |
| Number of pages | 6 |
| Journal | Gynecologic Oncology |
| Volume | 112 |
| Issue number | 2 |
| DOIs | |
| Publication status | Published - Feb 2009 |
| Externally published | Yes |
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Keywords
- Cervical cancer
- Epigenetic inactivation
- SFRP genes
ASJC Scopus subject areas
- Obstetrics and Gynaecology
- Oncology
Cite this
Promoter methylation of SFRPs gene family in cervical cancer. / Chung, Ming Tzeung; Sytwu, Huey Kang; Yan, Ming D.; Shih, Yu Lueng; Chang, Cheng Chang; Yu, Mu Hsien; Chu, Tang Yuan; Lai, Hung Cheng; Lin, Ya W.
In: Gynecologic Oncology, Vol. 112, No. 2, 02.2009, p. 301-306.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Promoter methylation of SFRPs gene family in cervical cancer
AU - Chung, Ming Tzeung
AU - Sytwu, Huey Kang
AU - Yan, Ming D.
AU - Shih, Yu Lueng
AU - Chang, Cheng Chang
AU - Yu, Mu Hsien
AU - Chu, Tang Yuan
AU - Lai, Hung Cheng
AU - Lin, Ya W.
PY - 2009/2
Y1 - 2009/2
N2 - Objectives: Oncogenic activation of the Wnt/β-catenin signaling pathway is common in human cancers, including cervical cancer. The secreted frizzled-related proteins (SFRPs) function as negative regulators of Wnt signaling and play an important role in carcinogenesis. Frequent promoter hypermethylation of SFRPs has been identified in human cancers; however, the precise role of SFRPs in cervical cancer is not clear. Methods: The methylation status of SFRPs gene family was analyzed in two cervical cancer cell lines and a full spectrum of cervical neoplasia, including 45 low-grade squamous intraepithelial lesions (LSIL), 49 high-grade squamous intraepithelial lesions (HSIL), 109 squamous cell carcinomas (SCC), and 45 normal controls. Results: The SFRP1 promoter was hypermethylated in 33.9% of SCC, 8.2% of HSIL, 2.2% of LSIL, but not in normal tissues. The SFRP2 promoter was hypermethylated in 80.7% of SCC, 16.3% of HSIL, 15.6% LSIL and 4.4% normal tissues. The SFRP4 promoter was hypermethylated in 67.9% of SCC, 36.7% of HSIL, 4.4% of LSIL, but not in normal tissues. The SFRP5 promoter was hypermethylated in 10.1% of SCC, 4.1% of HSIL, 13.3% of LSIL and 4.4% normal tissues. The frequency of SFRP1, SFRP2 and SFRP4 promoter methylation in tumors was significantly higher than in normal, LSIL, and HSIL samples (P <0.0001). SFRP5 methylation was significantly different in patients with or without lymph-node metastases (0% vs 15.2%, respectively, P <0.05). Conclusions: Our data suggest that promoter hypermethylation of SFRP1, SFRP2 and SFRP4 is associated with cervical carcinogenesis, which could be used for molecular screening of cervical neoplasias in future.
AB - Objectives: Oncogenic activation of the Wnt/β-catenin signaling pathway is common in human cancers, including cervical cancer. The secreted frizzled-related proteins (SFRPs) function as negative regulators of Wnt signaling and play an important role in carcinogenesis. Frequent promoter hypermethylation of SFRPs has been identified in human cancers; however, the precise role of SFRPs in cervical cancer is not clear. Methods: The methylation status of SFRPs gene family was analyzed in two cervical cancer cell lines and a full spectrum of cervical neoplasia, including 45 low-grade squamous intraepithelial lesions (LSIL), 49 high-grade squamous intraepithelial lesions (HSIL), 109 squamous cell carcinomas (SCC), and 45 normal controls. Results: The SFRP1 promoter was hypermethylated in 33.9% of SCC, 8.2% of HSIL, 2.2% of LSIL, but not in normal tissues. The SFRP2 promoter was hypermethylated in 80.7% of SCC, 16.3% of HSIL, 15.6% LSIL and 4.4% normal tissues. The SFRP4 promoter was hypermethylated in 67.9% of SCC, 36.7% of HSIL, 4.4% of LSIL, but not in normal tissues. The SFRP5 promoter was hypermethylated in 10.1% of SCC, 4.1% of HSIL, 13.3% of LSIL and 4.4% normal tissues. The frequency of SFRP1, SFRP2 and SFRP4 promoter methylation in tumors was significantly higher than in normal, LSIL, and HSIL samples (P <0.0001). SFRP5 methylation was significantly different in patients with or without lymph-node metastases (0% vs 15.2%, respectively, P <0.05). Conclusions: Our data suggest that promoter hypermethylation of SFRP1, SFRP2 and SFRP4 is associated with cervical carcinogenesis, which could be used for molecular screening of cervical neoplasias in future.
KW - Cervical cancer
KW - Epigenetic inactivation
KW - SFRP genes
UR - http://www.scopus.com/inward/record.url?scp=58249107838&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=58249107838&partnerID=8YFLogxK
U2 - 10.1016/j.ygyno.2008.10.004
DO - 10.1016/j.ygyno.2008.10.004
M3 - Article
VL - 112
SP - 301
EP - 306
JO - Gynecologic Oncology
JF - Gynecologic Oncology
SN - 0090-8258
IS - 2
ER -