PMID- 19176056 OWN - NLM STAT- MEDLINE DCOM- 20100527 LR - 20090129 IS - 0253-2727 (Print) IS - 0253-2727 (Linking) VI - 29 IP - 10 DP - 2008 Oct TI - [Role of multiple myeloma cells on normal endothelial cells in co-culture system]. PG - 658-61 AB - OBJECTIVE: To study the influence of multiple myeloma (MM) cells on normal endothelial cells in co-culture system in vitro. METHODS: A co-culture system of human MM cell line RPMI8226 with human umbilical vein endothelial cells (HUVECs) was established in vitro. Mono-cultured normal endothelial cells were used as control. Light microscopy and transmission electron microscopy were used to observe the morphology of the endothelial cells. The effects of HUVECs co-cultured with RPMI8226 on HUVECs angiogenesis were studied by modified transwell migration assay and net-like formation assay. The protein expression of brain derived neurotrophic factor (BDNF), TrkB, Endoglin, Tie-2, beta 3 integrin and vascular cell adhesion molecule-1 (VCAM-1) in HUVECs were determined by FACS and Western blot analysis, respectively. RESULTS: The morphology of HUVECs co-cultured with RPMI8226 cells became a narrower apart of extended shape as they began to align themselves. The sizes of nucleus and nucleolus were enlarged with an increased ratio of nuclear to nucleoplasm. The endoplasm was lose and distorted and the number of surface microvilli decreased. The RPMI8226 cell stimulated the migration and net-like formation of HUVEC, the number of net-like structure and migration cell being increased by 112% and 136%, respectively, compared with that of mono-cultured HUVECs. The expressions of BDNF, TrkB, Endoglin, Tie-2, beta 3 integrin and VCAM-1 in the ECs co-cultured with RPMI8226 were all up-regulated in comparison with those in the controls. CONCLUSION: The MM cells promote formation of new vessels in co-cultured endothelial cells and the endothelial cells in MM are different from the normal ECs in character, and behavior. FAU - Wang, Ya-Dan AU - Wang YD AD - Institution of Hematology, Union Hospital Affiliated to Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China. FAU - Hu, Yu AU - Hu Y FAU - Sun, Chun-Yan AU - Sun CY FAU - Wang, Hua-Fang AU - Wang HF LA - chi PT - English Abstract PT - Journal Article PT - Research Support, Non-U.S. Gov't PL - China TA - Zhonghua Xue Ye Xue Za Zhi JT - Zhonghua xue ye xue za zhi = Zhonghua xueyexue zazhi JID - 8212398 RN - 0 (Brain-Derived Neurotrophic Factor) RN - 0 (Vascular Cell Adhesion Molecule-1) SB - IM MH - Brain-Derived Neurotrophic Factor/metabolism MH - Cells, Cultured MH - Coculture Techniques MH - Endothelial Cells/*cytology MH - Endothelium, Vascular/cytology MH - Humans MH - Multiple Myeloma/metabolism/*pathology MH - Neovascularization, Physiologic MH - Umbilical Veins/cytology MH - Vascular Cell Adhesion Molecule-1/metabolism EDAT- 2009/01/30 09:00 MHDA- 2010/05/28 06:00 CRDT- 2009/01/30 09:00 PHST- 2009/01/30 09:00 [entrez] PHST- 2009/01/30 09:00 [pubmed] PHST- 2010/05/28 06:00 [medline] PST - ppublish SO - Zhonghua Xue Ye Xue Za Zhi. 2008 Oct;29(10):658-61.