Severin Schmid1, Uyen-Thao Le2, Benedikt Haager2, Olga Mayer2, Irene Dietrich3, Mirjam Elze2, Lars Johann Kemna3, Gernot Zissel4, Bernward Passlick2. 1. Department of Thoracic Surgery, University Medical Center Freiburg, Freiburg, Germany severin.schmid@uniklinik-freiburg.de. 2. Department of Thoracic Surgery, University Medical Center Freiburg, Freiburg, Germany. 3. Department of Radiology, University Medical Center Freiburg, Freiburg, Germany. 4. Department of Pneumology, University Medical Center Freiburg, Freiburg, Germany.
Abstract
BACKGROUND: The tumor microenvironment plays a critical role in tumor growth and spreading. Tumor-associated macrophages (TAM) make up a large proportion of the tumor mass and are one of the main producers of CC-chemokine ligand 18 (CCL18), which is believed to carry out important functions in the immunological interactions that promote tumor progression. MATERIALS AND METHODS: Cytokines/chemokines were measured in bronchoalveolar lavage (BAL) from the tumor site and serum before and after resection in patients with proven non-small cell lung cancer (NSCLC). RESULTS: CCL18 concentrations in BAL positively correlated with the radiologically determined tumor volume (r=0.72, p=0.0003) in NSCLC. In addition, tumors with lymph-node metastasis exhibited significantly higher CCL18 concentrations in BAL (p=0.049) than those without. Serum CCL18 concentrations did not differ significantly before and after tumor resection. CONCLUSION: The increased release of CCL18 with greater tumor size is most likely due to the accompanied growth of leukocyte infiltrate. With previous findings taken into account, this could be one factor contributing to tumor invasiveness and particularly lymphatic spread in patients with larger tumors. Copyright
BACKGROUND: The tumor microenvironment plays a critical role in tumor growth and spreading. Tumor-associated macrophages (TAM) make up a large proportion of the tumor mass and are one of the main producers of CC-chemokine ligand 18 (CCL18), which is believed to carry out important functions in the immunological interactions that promote tumor progression. MATERIALS AND METHODS: Cytokines/chemokines were measured in bronchoalveolar lavage (BAL) from the tumor site and serum before and after resection in patients with proven non-small cell lung cancer (NSCLC). RESULTS:CCL18 concentrations in BAL positively correlated with the radiologically determined tumor volume (r=0.72, p=0.0003) in NSCLC. In addition, tumors with lymph-node metastasis exhibited significantly higher CCL18 concentrations in BAL (p=0.049) than those without. Serum CCL18 concentrations did not differ significantly before and after tumor resection. CONCLUSION: The increased release of CCL18 with greater tumor size is most likely due to the accompanied growth of leukocyte infiltrate. With previous findings taken into account, this could be one factor contributing to tumor invasiveness and particularly lymphatic spread in patients with larger tumors. Copyright
Authors: Eda G Ramirez-Valles; Alicia Rodríguez-Pulido; Marcelo Barraza-Salas; Isaac Martínez-Velis; Iván Meneses-Morales; Víctor M Ayala-García; Carlos A Alba-Fierro Journal: Technol Cancer Res Treat Date: 2020 Jan-Dec