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The physical state of HPV16 infection and its clinical significance in cancer precursor lesion and cervical carcinoma

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A Correction to this article was published on 10 March 2020

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Abstract

Purpose

Integration of high-risk human papillomavirus (HR-HPVs) into the host DNA has been proposed as a risk for cervical carcinogenesis. HPV-16 is the predominant high-risk type and its integration ration varied largely in different cervical cancer (CC) samples. The aim of this study was to evaluate the correlation between physical state of HPV16 infection and extent of cervical lesion, as well as the clinical significance of virus existing state.

Methods

A total of 252 cases of paraffin-embedded blocks derived from cancer precursor lesion and cervical carcinoma samples were detected by HC-II for HR-HPV infection. HPV16 infection was confirmed by PCR and immunohistochemistry for HPV16 E7 simultaneously. The physical state of HPV16 infection were assessed by PCR for 3 overlapping fragments in E2 gene and multiple PCR for E2 gene and E7 gene.

Results

The infection ratio of HR-HPV in normal cervical tissue, cervical intraepithelial neoplasia (CIN) I, CIN II, CIN III and cervical cancer were 15.0, 32.8, 54.3, 69.7, 93.8%, respectively. HR-HPV positive samples of 62.8% were infected with HPV16. The integration ratio of HPV16 in CIN III and cervical carcinoma were 35.7 and 58.1% respectively, both of which were significantly higher than that of CIN I and normal cervical tissues. The discrepancy was statistically significant (P < 0.05). Furthermore, it was observed that persistent virus infection and progression of cervical lesion were more common in CIN I with integrated HPV16 than that with episomal HPV16.

Conclusion

The integration ratio of HPV16 was accompanied by an increase in the grade of cervical lesion. The integrated state of HPV16 infection was strongly associated with persistent HPV infection and progression of cervical lesions.

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Change history

  • 10 March 2020

    The authors would like to correct figure, as the error was introduced in the preparation of this figure for publication. We sincerely apologize for having this error in the article, the authors have provided corrected version of figure here.

  • 10 March 2020

    The authors would like to correct figure, as the error was introduced in the preparation of this figure for publication. We sincerely apologize for having this error in the article, the authors have provided corrected version of figure here.

Abbreviations

CC:

Cervical cancer

HR-HPVs:

High-risk human papillomavirus

CIN:

Cervical intraepithelial neoplasia

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Correspondence to Shixuan Wang or Ding Ma.

Additional information

This study was supported by grants from the National Science Foundation of China (No. 30600667;30628029;30672227) and the “973” Program of China (No. 2002CB513100).

W. Li and W. Wang contributed equally to this manuscript.

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Li, W., Wang, W., Si, M. et al. The physical state of HPV16 infection and its clinical significance in cancer precursor lesion and cervical carcinoma. J Cancer Res Clin Oncol 134, 1355–1361 (2008). https://doi.org/10.1007/s00432-008-0413-3

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  • DOI: https://doi.org/10.1007/s00432-008-0413-3

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