Asian Pacific Journal of Cancer Prevention

  • 제15권14호
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  • Pages.5867-5872
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  • 2014
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  • 1513-7368(pISSN)
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  • 2476-762X(eISSN)
아시아태평양암예방학회 (Asian Pacific Journal of Cancer Prevention)
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TLR9 Expression in Uterine Cervical Lesions of Uyghur Women Correlate with Cervical Cancer Progression and Selective Silencing of Human Papillomavirus 16 E6 and E7 Oncoproteins in Vitro

  • Hao, Yi (The Affiliated Tumor Hospital of Xinjiang Medical University) ;
  • Yuan, Jian-Ling (The Affiliated Tumor Hospital of Xinjiang Medical University) ;
  • Abudula, Abulizi (Xinjiang Key Laboratory of Molecular Biology and Endemic Diseases, Xinjiang Medical University) ;
  • Hasimu, Axiangu (Department of Pathology, Xinjiang Medical University) ;
  • Kadeer, Nafeisha (Xinjiang Key Laboratory of Molecular Biology and Endemic Diseases, Xinjiang Medical University) ;
  • Guo, Xia (Xinjiang Key Laboratory of Molecular Biology and Endemic Diseases, Xinjiang Medical University)
  • 발행 : 2014.07.30
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초록

Background: Cervical cancer is listed as one of high-incidence endemic diseases in Xinjiang. Our study aimed to evaluate the expression of TLR9 in uterine cervical tissues of Uyghur women and examine associations with clinicopathological variables. We further characterized the direct effects of TLR9 upon the selective silencing of human papillomavirus (HPV) E6 and E7 oncoprotein expression in HPV 16-positive human cervical carcinoma cells treated with siRNA in vitro. Materials and Methods: Immunohistochemistry was applied to evaluate TLR9 expression in 97 formalin-fixed paraffin-embedded cervical samples from Uyghur women; 32 diagnosed with cervical squamous cell carcinomas (CSCC), 14 with low-grade cervical intraepithelial neoplasias (CINI), 10 medium-grade (CINII), 24 high-grade (CINIII), and 17 chronic cervicitis. $BLOCK-iT^{TM}$ U6 RNAi Entry Vector $pENTR^{TM}$/U6-E6 and E7 was constructed and transfected the entry clone directly into the mammalian cell line 293FT. Then the HPV 16-positive SiHa human cervical carcinoma cell line was infected with RNAi recombinant lentivirus. RT-PCR and Western blotting were used to determine the expression of TLR9 in both SiHa and HPV 16 E6 and E7 silenced SiHa cells. Results: Immunohistochemical staining showed that TLR9 expression was undetectable (88.2%) or weak (11.8%) in chronic cervicitis tissues. However, variable staining was observed in the basal layer of all normal endocervical glands. TLR9 expression, which was mainly observed as cytoplasmic staining, gradually increased in accordance with the histopathological grade in the following order: chronic cervicitis (2/17, 11.8%)

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  3. Therapeutic potential of toll‐like receptors in treatment of gynecological cancers pp.1521-6551, 2019, https://doi.org/10.1002/iub.2011