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Recruitment of Podoplanin Positive Cancer-Associated Fibroblasts in Metastatic Lymph Nodes Predicts Poor Prognosis in Pathological N2 Stage III Lung Adenocarcinoma

  • Thoracic Oncology
  • Published:
Annals of Surgical Oncology Aims and scope Submit manuscript

Abstract

Background

Cancer-associated fibroblasts (CAFs) directly communicate with cancer cells and play important roles in cancer progression. Recent studies have reported that primary cancer tissue with podoplanin-expressing CAFs predicted a poorer outcome among stage I lung adenocarcinoma patients. However, whether podoplanin(+)-CAFs also can be recruited into metastatic lymph nodes and influence the prognosis remains unclear.

Methods

We selected 112 patients with pathological N2 stage III lung adenocarcinoma and examined the podoplanin expression of CAFs and their prognostic impact in primary and metastatic N2 lesions.

Results

Podoplanin(+)-CAFs were observed in 61 (54.5 %) primary sites and 44 (39.3 %) metastatic lymph nodes. Podoplanin(+)-CAFs were found at metastatic lymph nodes in 33 (54.1 %) primary podoplanin-positive and 11 (21.6 %) primary podoplanin-negative sites. These findings suggest a significant positive correlation in podoplanin expression in CAFs between pairs of primary and metastatic lesions (P < 0.001). The difference in the overall survival of patients with podoplanin-positive/negative CAFs in their primary lesion was not correlated (P = 0.927). In contrast, patients with podoplanin(+)-CAFs in metastatic lymph nodes had a shorter overall survival than those without podoplanin(+)-CAFs (P = 0.003). In multivariate analyses, podoplanin(+)-CAFs in metastatic lymph nodes were a significantly independent risk factor for a poor outcome (P = 0.007).

Conclusions

Our study indicated that podoplanin(+)-CAFs in metastatic lymph nodes was a significant prognostic factor for overall survival among pathological N2 stage III adenocarcinoma patients.

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Acknowledgment

The authors thank Mr. Shogo Nomura for statistical advice and Mr. Shinya Yanagi for technical support. This work was supported by the Grant-in-Aid for Cancer Research (19-10) from the Ministry of Health, Labor, and Welfare Programs; the Foundation for the Promotion of Cancer Research, 3rd-Term Comprehensive 10-Year Strategy for Cancer Control; Program for Promotion of Fundamental Studies in Health Sciences of the National Institute of Biomedical Innovation.

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Correspondence to Genichiro Ishii or Atsushi Ochiai.

Additional information

This work was supported by the Grant-in-Aid for Cancer Research (19-10) from the Ministry of Health, Labor, and Welfare Programs; the Foundation for the Promotion of Cancer Research, 3rd-Term Comprehensive 10-Year Strategy for Cancer Control; Program for Promotion of Fundamental Studies in Health Sciences of the National Institute of Biomedical Innovation.

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Neri, S., Ishii, G., Taira, T. et al. Recruitment of Podoplanin Positive Cancer-Associated Fibroblasts in Metastatic Lymph Nodes Predicts Poor Prognosis in Pathological N2 Stage III Lung Adenocarcinoma. Ann Surg Oncol 19, 3953–3962 (2012). https://doi.org/10.1245/s10434-012-2421-4

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  • DOI: https://doi.org/10.1245/s10434-012-2421-4

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