PMID- 27742687 OWN - NLM STAT- MEDLINE DCOM- 20170724 LR - 20180411 IS - 1538-7445 (Electronic) IS - 0008-5472 (Linking) VI - 77 IP - 2 DP - 2017 Jan 15 TI - Lysyl Oxidase Is a Strong Determinant of Tumor Cell Colonization in Bone. PG - 268-278 LID - 10.1158/0008-5472.CAN-15-2621 [doi] AB - Lysyl oxidase (LOX) is a secreted copper-dependent amine oxidase whose primary function is to drive collagen crosslinking and extracellular matrix stiffness. LOX in colorectal cancer synergizes with hypoxia-inducible factor-1 (HIF-1) to promote tumor progression. Here we investigated whether LOX/HIF1 endows colorectal cancer cells with full competence for aggressive colonization in bone. We show that a high LOX expression in primary tumors from patients with colorectal cancer was associated with poor clinical outcome, irrespective of HIF-1 In addition, LOX was expressed by tumor cells in the bone marrow from colorectal cancer patients with bone metastases. In vivo experimental studies show that LOX overexpression in colorectal cancer cells or systemic delivery of the conditioned medium from LOX-overexpressing colorectal cancer cells promoted tumor cell dissemination in the bone marrow and enhanced osteolytic lesion formation, irrespective of HIF-1 Conversely, silencing or pharmacologic inhibition of LOX activity blocked dissemination of colorectal cancer cells in the bone marrow and tumor-driven osteolytic lesion formation. In vitro, tumor-secreted LOX supported the attachment and survival of colorectal cancer cells to and in the bone matrix, and inhibited osteoblast differentiation. LOX overexpression in colorectal cancer cells also induced a robust production of IL6. In turn, both LOX and IL6 were acting in concert to promote RANKL-dependent osteoclast differentiation, thereby creating an imbalance between bone resorption and bone formation. Collectively, our findings show that LOX supports colorectal cancer cell dissemination in the bone marrow and they reveal a novel mechanism through which LOX-driven IL6 production by colorectal cancer cells impairs bone homeostasis. Cancer Res; 77(2); 268-78. (c)2016 AACR. CI - (c)2016 American Association for Cancer Research. FAU - Reynaud, Caroline AU - Reynaud C AD - INSERM, UMR1033, Lyon, France. philippe.clezardin@inserm.fr caroline.reynaud@inserm.fr. AD - University of Lyon, Villeurbanne, France. FAU - Ferreras, Laura AU - Ferreras L AD - INSERM, UMR1033, Lyon, France. AD - University of Lyon, Villeurbanne, France. FAU - Di Mauro, Paola AU - Di Mauro P AD - INSERM, UMR1033, Lyon, France. AD - University of Lyon, Villeurbanne, France. FAU - Kan, Casina AU - Kan C AD - INSERM, UMR1033, Lyon, France. AD - University of Lyon, Villeurbanne, France. FAU - Croset, Martine AU - Croset M AD - INSERM, UMR1033, Lyon, France. AD - University of Lyon, Villeurbanne, France. FAU - Bonnelye, Edith AU - Bonnelye E AD - INSERM, UMR1033, Lyon, France. AD - University of Lyon, Villeurbanne, France. FAU - Pez, Floriane AU - Pez F AD - CNRS, UMR5305, IBCP, Lyon, France. FAU - Thomas, Clemence AU - Thomas C AD - Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, Massachusetts. FAU - Aimond, Geraldine AU - Aimond G AD - CNRS, UMR5305, IBCP, Lyon, France. FAU - Karnoub, Antoine E AU - Karnoub AE AD - Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, Massachusetts. FAU - Brevet, Marie AU - Brevet M AD - INSERM, UMR1033, Lyon, France. AD - Department of Pathology, Groupement Hospitalier Est, Hospices Civils de Lyon, Lyon, France. FAU - Clezardin, Philippe AU - Clezardin P AD - INSERM, UMR1033, Lyon, France. philippe.clezardin@inserm.fr caroline.reynaud@inserm.fr. AD - University of Lyon, Villeurbanne, France. LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20161014 PL - United States TA - Cancer Res JT - Cancer research JID - 2984705R RN - 0 (Interleukin-6) RN - EC 1.4.3.13 (Protein-Lysine 6-Oxidase) SB - IM MH - Animals MH - Blotting, Western MH - Bone Neoplasms/*secondary MH - Bone and Bones/metabolism/pathology MH - Cell Line, Tumor MH - Colorectal Neoplasms/*enzymology/*secondary MH - Enzyme-Linked Immunosorbent Assay MH - Female MH - Heterografts MH - Humans MH - Immunohistochemistry MH - Interleukin-6/metabolism MH - Mice MH - Mice, Inbred BALB C MH - Mice, Nude MH - Neoplasm Invasiveness/*pathology MH - Protein-Lysine 6-Oxidase/*metabolism MH - Real-Time Polymerase Chain Reaction EDAT- 2016/10/16 06:00 MHDA- 2017/07/25 06:00 CRDT- 2016/10/16 06:00 PHST- 2015/09/22 00:00 [received] PHST- 2016/09/28 00:00 [revised] PHST- 2016/09/30 00:00 [accepted] PHST- 2016/10/16 06:00 [pubmed] PHST- 2017/07/25 06:00 [medline] PHST- 2016/10/16 06:00 [entrez] AID - 0008-5472.CAN-15-2621 [pii] AID - 10.1158/0008-5472.CAN-15-2621 [doi] PST - ppublish SO - Cancer Res. 2017 Jan 15;77(2):268-278. doi: 10.1158/0008-5472.CAN-15-2621. Epub 2016 Oct 14.