PMID- 29492204 OWN - NLM STAT- PubMed-not-MEDLINE LR - 20191120 IS - 1949-2553 (Electronic) IS - 1949-2553 (Linking) VI - 9 IP - 9 DP - 2018 Feb 2 TI - Stromal versus tumoral inflammation differentially contribute to metastasis and poor survival in laryngeal squamous cell carcinoma. PG - 8415-8426 LID - 10.18632/oncotarget.23865 [doi] AB - In solid tumors the biology and clinical course are strongly influenced by the interaction of tumor cells and infiltrating stromal host cells. The aim of this study was to assess the relative importance of stromal vs. tumoral inflammation for metastasis and survival in patients with laryngeal squamous cell carcinoma (LSCC). In 110 patients with tissues from histologically proven LSCC the expression of CD45, CD11b, CD3, MMP-9 and COX-2 was semiquantitatively analyzed in stromal regions and tumor nests. CD45, CD11b, CD3 and MMP-9 positive cells were more abundant in stroma whereas COX-2 was predominantly expressed in epithelial tumor nests. High expression of stromal CD45 and CD11b on immune cells in tumor regions correlated with COX-2 expression on tumor cells. High levels of CD45 in stroma as well as CD11b and COX-2 in tumor nests were associated with increased metastasis. In contrast, high frequencies of CD3 cells in the tumor core area were associated with reduced metastasis. Overall survival was reduced in patients with high stromal CD45, high tumoral CD11b and high tumoral COX-2 expression. This is the first study which separately analyzes peritumoral stroma and tumor core area in laryngeal squamous cell carcinoma in terms of CD45, CD11b, CD3, MMP-9 and COX-2 expression. Our results indicate that stroma and tumor islands need to be considered as two separate compartments in the inflammatory tumor microenvironment. Inflammatory stromal leukocytes, abundant myeloid cells in tumor regions and high expression of COX-2 on tumor cells are linked to metastatic disease and poor overall survival. FAU - Hoing, Benedikt AU - Hoing B AD - Department of Otorhinolaryngology, Head and Neck Surgery, University Hospital Essen, Essen, Germany. FAU - Kanaan, Oliver AU - Kanaan O AD - Department of Otorhinolaryngology, Head and Neck Surgery, University Hospital Essen, Essen, Germany. FAU - Altenhoff, Petra AU - Altenhoff P AD - Department of Otorhinolaryngology, Head and Neck Surgery, University Hospital Essen, Essen, Germany. FAU - Petri, Robert AU - Petri R AD - Department of Otorhinolaryngology, Head and Neck Surgery, University Hospital Essen, Essen, Germany. FAU - Thangavelu, Kruthika AU - Thangavelu K AD - Department of Otorhinolaryngology, Head and Neck Surgery, University Hospital Essen, Essen, Germany. FAU - Schluter, Anke AU - Schluter A AD - Department of Otorhinolaryngology, Head and Neck Surgery, University Hospital Essen, Essen, Germany. FAU - Lang, Stephan AU - Lang S AD - Department of Otorhinolaryngology, Head and Neck Surgery, University Hospital Essen, Essen, Germany. FAU - Bankfalvi, Agnes AU - Bankfalvi A AD - Institute of Pathology, University Hospital Essen, Essen, Germany. FAU - Brandau, Sven AU - Brandau S AD - Department of Otorhinolaryngology, Head and Neck Surgery, University Hospital Essen, Essen, Germany. LA - eng PT - Journal Article DEP - 20180103 PL - United States TA - Oncotarget JT - Oncotarget JID - 101532965 PMC - PMC5823564 OTO - NOTNLM OT - cancer-related inflammation OT - head and neck cancer OT - leukocytes OT - nodal metastasis OT - tumor stroma COIS- CONFLICTS OF INTEREST None. EDAT- 2018/03/02 06:00 MHDA- 2018/03/02 06:01 PMCR- 2018/02/02 CRDT- 2018/03/02 06:00 PHST- 2017/05/30 00:00 [received] PHST- 2017/11/16 00:00 [accepted] PHST- 2018/03/02 06:00 [entrez] PHST- 2018/03/02 06:00 [pubmed] PHST- 2018/03/02 06:01 [medline] PHST- 2018/02/02 00:00 [pmc-release] AID - 23865 [pii] AID - 10.18632/oncotarget.23865 [doi] PST - epublish SO - Oncotarget. 2018 Jan 3;9(9):8415-8426. doi: 10.18632/oncotarget.23865. eCollection 2018 Feb 2.