Increased malignancy of oral squamous cell carcinomas (oscc) is associated with macrophage polarization in regional lymph nodes – an immunohistochemical study

BMC Cancer

Falk Wehrhan³  Maike Büttner-Herold²  Peter Hyckel¹  Patrick Moebius³  Raimund Preidl³  Luitpold Distel⁴  Jutta Ries³  Kerstin Amann²  Christian Schmitt³  Friedrich W Neukam³  Manuel Weber³ 

[1] Department of Oral and Maxillofacial Surgery, University of Jena, Erlanger Allee 101, 07749 Jena, Germany

[2] Institute of Pathology, Department of Nephropathology, Friedrich-Alexander University Erlangen-Nürnberg, Krankenhausstraße 12, 91054 Erlangen, Germany

[3] Department of Oral and Maxillofacial Surgery, Friedrich-Alexander University Erlangen-Nürnberg, Glueckstrasse 11, 91054 Erlangen, Germany

[4] Department of Radiation Oncology, Friedrich-Alexander University Erlangen-Nürnberg, Universitätsstraße 27, 91054 Erlangen, Germany

关键词: M2;    M1;    oscc;    Peripheral tolerance;    Macrophage polarization;    Lymph node;    Oral cancer;    Oral squamous cell carcinoma;   

Others  :  1125326
DOI  :  10.1186/1471-2407-14-522

 received in 2014-03-05, accepted in 2014-07-09,  发布年份 2014

【 摘 要 】

Background

It is largely accepted that specific immunological parameters in solid malignancies are associated with patient’s prognosis. Recently a correlation of macrophage polarization with histomorphological parameters could also be shown in oral squamous cell carcinoma (oscc). The observed tumor derived peripheral immune tolerance could be associated with the macrophage polarization in regional tumor draining lymph nodes.

So far there are no studies analyzing the macrophage polarization in cervical lymph nodes of oscc patients. In the present study we aimed to correlate macrophage polarization in different anatomical lymph node compartments of patients diagnosed with oscc with histopathologic parameters of the primary tumor (T-, N-, L-, V-, Pn-status, grading).

Methods

Tumor free (n = 37) and metastatic (n = 17) lymph nodes of T1 and T2 oscc patients were processed for immunohistochemistry to detect CD68, CD11c, CD163 and MRC1 positive cells. Samples were digitized using whole slide imaging and the number of cells expressing the aforementioned markers in the region of interest quantitatively analyzed.

Results

The malignancy of the primary tumor (defined by T-, L-, Pn-status, grading) correlated with the lymph node macrophage polarization. L1 and Pn1 tumor cases displayed a significantly (p < 0.05) decreased M1 and increased M2 polarization in the sinus of the lymph nodes. G3 cases presented a significantly (p < 0.05) increased M2 polarization in the sinus compared to G2 cases. T2 tumors had significantly (p < 0.05) increased M2 polarization in the interfollicular zone of regional lymph nodes compared to T1 tumors. Metastatic and non-metastatic lymph nodes did not differ regarding their macrophage polarization.

Conclusions

The current study revealed for the first time an influence of oscc on the macrophage polarization in regional lymph nodes. Markers of malignant behavior in the primary tumor were associated with a shift of macrophage polarization in lymph nodes from the anti-tumoral M1 type to the tumor-promoting M2 type. As tumor free and metastatic lymph nodes did not differ in terms of their macrophage polarization pattern, there must be other factors influencing the location for lymph node metastasis formation.

【 授权许可】

   
2014 Wehrhan et al.; licensee BioMed Central Ltd.

【 图 表 】

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