Journal
JOURNAL OF CANCER
Volume 8, Issue 18, Pages 3868-3875Publisher
IVYSPRING INT PUBL
DOI: 10.7150/jca.21444
Keywords
CD68; CD163; cervical cancer; human papillomavirus (HPV); tumor-associated macrophages (TAMs); tumor microenvironment (TME)
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Funding
- National Science Foundation of China [81372781, 81072132, 81572546, 81672589]
- Natural Science Foundation of Shanghai Municipality [15ZR1433300]
- Science and Technology Program of Shenzhen [JCYJ20160429161218745]
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Objective. To explore the influence of M2-polarized tumor-associated macrophages (TAMs) on high-risk human papillomavirus (hr-HPV)-related cervical carcinogenesis and metastasis. Methods. CD68+ and CD163+ macrophages were examined immunohistochemically in a series of 130 samples, including 26 cases of normal cervical tissues, 59 cases of cervical intraepithelial neoplasia (CIN), and 45 cases of squamous cell carcinoma (SCC), and the results were statistically analyzed. The macrophage count was corrected for the epithelial and stromal compartments respectively. Clinical data were also obtained. Results. High counts of CD68+ and CD163+ macrophages were associated with hr-HPV infection (both p < 0.05) and positively correlated with cervical carcinogenesis (Spearman's rho = 0.478, p = 0.000; Spearman's rho = 0.676, p = 0.000, respectively). The immunostaining pattern of CD163 exhibited clearer background than that of CD68. CD163+ macrophages showed a more obviously increasing migration into the epithelium along with the progression of CIN to invasive cancer. Notably, a high index of CD163+ macrophages was significantly associated with higher FIGO stages (p = 0.009) and lymph node metastasis (p = 0.012), but a similar finding was not found for CD68+ macrophages (p = 0.067, p = 0.079, respectively). Conclusions. Our study supported a critical role of TAMs as a prospective predictor for hr-HPV-related cervical carcinogenesis. CD163, as a promising TAMs marker, is superior to CD68 for predicting the malignant transformation and metastatic potential of cervical cancer.
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