PMID- 16328410 OWN - NLM STAT- MEDLINE DCOM- 20060822 LR - 20181113 IS - 0937-4477 (Print) IS - 0937-4477 (Linking) VI - 262 IP - 12 DP - 2005 Dec TI - Viable head and neck tumor spheroids stimulate in vitro autologous monocyte MCP-1 secretion through soluble substances and CD14/lectin-like receptors. PG - 953-60 AB - Biopsies from carcinoma tissue and benign control mucosa from head and neck squamous cell carcinoma (HNSCC) patients were used to establish fragment (F)-spheroids in vitro. We have previously shown that autologous monocytes co-cultured with F-spheroids in vitro augment their secretion of monocyte chemotactic protein-1 (MCP-1). Presently, the aims of the present work were to study whether the metabolic activity, secreted products and/or specific receptor/ligand on the surface of the F-spheroids and monocytes are necessary for stimulation of the monocyte MCP-1 secretion upon F-spheroid co-culture. Actinomycin D (1 mug/ml for 24 h) pre-treatment of the F-spheroids abolished the monocyte MCP-1 co-culture response. Co-culture of monocytes and F-spheroids separated by a semi-permeable membrane showed a decreased, but still present, monocyte MCP-1 co-culture response. Conditioned medium from F-spheroids stimulated allogenous monocytes to secrete MCP-1. The addition of glucose or galactose, but not mannose, to co-cultures partially inhibited the monocyte MCP-1 co-culture response. The addition of anti-CD14 antibody diminished the MCP-1 co-culture response. In conclusion, the monocyte MCP-1 co-culture response is dependent on metabolically active spheroids, secreted stimuli, and is augmented by direct contact with F-spheroids, possibly via lectin-like receptors and the CD14 receptor. FAU - Olsnes, Carla AU - Olsnes C AD - Department of Otolaryngology and Head and Neck Surgery, Haukeland University Hospital, Bergen, Norway. FAU - Heimdal, John-Helge AU - Heimdal JH FAU - Kross, Kenneth W AU - Kross KW FAU - Olofsson, Jan AU - Olofsson J FAU - Aarstad, Hans Jorgen AU - Aarstad HJ LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20051119 PL - Germany TA - Eur Arch Otorhinolaryngol JT - European archives of oto-rhino-laryngology : official journal of the European Federation of Oto-Rhino-Laryngological Societies (EUFOS) : affiliated with the German Society for Oto-Rhino-Laryngology - Head and Neck Surgery JID - 9002937 RN - 0 (Autoantibodies) RN - 0 (CCL2 protein, human) RN - 0 (Chemokine CCL2) RN - 0 (Culture Media, Conditioned) RN - 0 (Ligands) RN - 0 (Lipopolysaccharide Receptors) RN - 0 (Receptors, Mitogen) RN - IY9XDZ35W2 (Glucose) RN - PHA4727WTP (Mannose) RN - X2RN3Q8DNE (Galactose) SB - IM MH - Autoantibodies/immunology MH - Carcinoma, Squamous Cell/*metabolism/pathology MH - Chemokine CCL2/*biosynthesis/metabolism MH - Coculture Techniques MH - Culture Media, Conditioned MH - Enzyme-Linked Immunosorbent Assay MH - Galactose/pharmacology MH - Glucose/pharmacology MH - Head and Neck Neoplasms/*metabolism/pathology MH - Humans MH - Ligands MH - Lipopolysaccharide Receptors/immunology/*pharmacology MH - Mannose/pharmacology MH - Monocytes/*metabolism MH - Receptors, Mitogen/*metabolism MH - Spheroids, Cellular/*metabolism/pathology MH - Tumor Cells, Cultured EDAT- 2005/12/06 09:00 MHDA- 2006/08/23 09:00 CRDT- 2005/12/06 09:00 PHST- 2004/09/17 00:00 [received] PHST- 2004/11/18 00:00 [accepted] PHST- 2005/12/06 09:00 [pubmed] PHST- 2006/08/23 09:00 [medline] PHST- 2005/12/06 09:00 [entrez] AID - 10.1007/s00405-004-0902-1 [doi] PST - ppublish SO - Eur Arch Otorhinolaryngol. 2005 Dec;262(12):953-60. doi: 10.1007/s00405-004-0902-1. Epub 2005 Nov 19.