PMID- 28966935 OWN - NLM STAT- PubMed-not-MEDLINE LR - 20200930 IS - 2331-091X (Print) IS - 2331-0928 (Electronic) VI - 4 IP - 2 DP - 2017 TI - Brain derived neutrophic factor (BDNF) coordinates lympho-vascular metastasis through a fibroblast-governed paracrine axis in the tumor microenvironment. LID - e1566 [pii] LID - 10.14800/ccm.1566 [doi] AB - It has long been known that the tumor microenvironment contributes to the proliferation and survival of neoplasms through the constant interaction with the stromal and immune compartments. In this investigation, we explored the role of cancer-associated fibroblasts (CAFs) in the regulation of the tumor microenvironment in head and neck squamous cell carcinoma (HNSCC) though a complex intercellular BDNF-TrkB signaling system. Our studies show that conditioned media derived from patient-derived CAFs promoted HNSCC cell proliferation, in vitro cell migration, cell invasion and chemotherapy resistance, compared to normal fibroblasts. Furthermore, examination of the in vivo impact of CAF pathophysiology in the tumor microenvironment in animal xenograft models revealed that HNSCC cell lines in combination with CAFs promoted tumor growth and increased incidence of lymphovascular metastasis as compared to injection of tumor cells or CAF cells alone. Using pharmacological and genetic alterations, we mechanistically demonstrate the critical importance of BDNF-TrkB signaling in the tumor microenvironment. These investigations further support the rationale for BDNF/TRKB targeted therapy against in the treatment of HNSCC. FAU - Jiffar, Tilahun AU - Jiffar T AD - Department of Head and Neck Surgery, MD Anderson Cancer Center, Houston TX 77030, USA. FAU - Yilmaz, Turker AU - Yilmaz T AD - Department of Head and Neck Surgery, MD Anderson Cancer Center, Houston TX 77030, USA. FAU - Lee, Junegoo AU - Lee J AD - Department of Head and Neck Surgery, MD Anderson Cancer Center, Houston TX 77030, USA. FAU - Miller, Yair AU - Miller Y AD - Department of Head and Neck Surgery, MD Anderson Cancer Center, Houston TX 77030, USA. FAU - Feng, Lei AU - Feng L AD - Department of Biostatistics, MD Anderson Cancer Center, Houston TX 77030, USA. FAU - El-Naggar, Adel AU - El-Naggar A AD - Department of Pathology, MD Anderson Cancer Center, Houston TX 77030, USA. FAU - Kupferman, Michael E AU - Kupferman ME AD - Department of Head and Neck Surgery, MD Anderson Cancer Center, Houston TX 77030, USA. LA - eng GR - K08 DE019185/DE/NIDCR NIH HHS/United States GR - L30 CA111058/CA/NCI NIH HHS/United States GR - P30 CA016672/CA/NCI NIH HHS/United States PT - Journal Article DEP - 20170710 PL - United States TA - Cancer Cell Microenviron JT - Cancer cell & microenvironment JID - 101647794 PMC - PMC5617346 MID - NIHMS894244 COIS- Conflicting interests The authors have declared that no conflict of interests exist. EDAT- 2017/10/03 06:00 MHDA- 2017/10/03 06:01 PMCR- 2017/09/27 CRDT- 2017/10/03 06:00 PHST- 2017/10/03 06:00 [entrez] PHST- 2017/10/03 06:00 [pubmed] PHST- 2017/10/03 06:01 [medline] PHST- 2017/09/27 00:00 [pmc-release] AID - e1566 [pii] AID - 10.14800/ccm.1566 [doi] PST - ppublish SO - Cancer Cell Microenviron. 2017;4(2):e1566. doi: 10.14800/ccm.1566. Epub 2017 Jul 10.