PMID- 9010447 OWN - NLM STAT- MEDLINE DCOM- 19970224 LR - 20071114 IS - 0023-6837 (Print) IS - 0023-6837 (Linking) VI - 76 IP - 1 DP - 1997 Jan TI - Characterization of a newly established human bone marrow endothelial cell line: distinct adhesive properties for hematopoietic progenitors compared with human umbilical vein endothelial cells. PG - 25-36 AB - Human bone marrow endothelial cells (HBMEC) are intimately involved in the homing of hematopoietic progenitor cells (HPC) to the bone marrow and in the regulation of proliferation and differentiation of these cells. Because availability of primary HBMEC and their capacity to be cultured in vitro are limited, we used isolated HBMEC to establish a cloned cell line by microinjection of a recombinant plasmid expressing simian virus 40 early genes under the control of a deletion mutant of the human vimentin promoter. Serum requirements for growth of a transformed HBMEC line (TrHBMEC) were markedly decreased compared with those of primary cells, and added growth factors were not required for proliferation. Cells took up acetylated low-density lipoprotein normally, bound to Ulex europaeus lectin, and stained positively for von Willebrand factor, P-selectin, CD31, CD34, CD44, very late antigen-5, and intercellular adhesion molecule-2 (ICAM-2). After treatment with TNF-alpha or lipopolysaccharide, TrHBMEC increased surface expression of E-selectin, vascular cell adhesion molecule-1 (VCAM-1), and ICAM-1 in a manner similar to primary HBMEC. In contrast, IL-1 beta elicited much less up-regulation of these adhesion molecules than in primary cells. In previous work, we reported that, in a flow adhesion model, rolling of peripheral blood CD34+ cells on primary HBMEC was E-selectin-dependent, whereas VCAM-1 and ICAM-1 contributed to firm adhesion. In the present study, we show that HPC adhere in a similar way to TrHBMEC. A less-pronounced role for VCAM-1 and ICAM-1 was found in the adhesion of HPC to human umbilical vein endothelial cells. Furthermore, significantly more CD34+ cells adhered to TNF-alpha-stimulated HBMEC and TrHBMEC than to similarly stimulated human umbilical vein endothelial cells. These data emphasize the importance of using microvessel HBMEC for studying the homing of HPC to the bone marrow, and indicate the usefulness of the above-described bone marrow endothelial cell line. FAU - Schweitzer, K M AU - Schweitzer KM AD - Department of Hematology, Free University Hospital Amsterdam, The Netherlands. FAU - Vicart, P AU - Vicart P FAU - Delouis, C AU - Delouis C FAU - Paulin, D AU - Paulin D FAU - Drager, A M AU - Drager AM FAU - Langenhuijsen, M M AU - Langenhuijsen MM FAU - Weksler, B B AU - Weksler BB LA - eng GR - HL-18828/HL/NHLBI NIH HHS/United States PT - Comparative Study PT - Journal Article PT - Research Support, Non-U.S. Gov't PT - Research Support, U.S. Gov't, P.H.S. PL - United States TA - Lab Invest JT - Laboratory investigation; a journal of technical methods and pathology JID - 0376617 RN - 0 (Antigens, CD) RN - 0 (Antigens, CD34) RN - 0 (Antigens, Viral, Tumor) RN - 0 (Cell Adhesion Molecules) RN - 0 (Immunoglobulin G) RN - 0 (Vimentin) SB - IM MH - Antigens, CD/analysis/*biosynthesis MH - Antigens, CD34/analysis MH - Antigens, Viral, Tumor/biosynthesis MH - Bone Marrow/physiology MH - *Bone Marrow Cells MH - Cell Adhesion MH - Cell Adhesion Molecules/analysis/*biosynthesis MH - Cell Line MH - Clone Cells MH - Culture Techniques/methods MH - Endothelium/*cytology/physiology MH - Endothelium, Vascular/cytology/*physiology MH - Flow Cytometry MH - Hematopoietic Stem Cells/cytology/*physiology MH - Humans MH - Immunoglobulin G MH - Regulatory Sequences, Nucleic Acid MH - Simian virus 40/genetics MH - Transfection MH - Umbilical Veins MH - Vimentin/biosynthesis EDAT- 1997/01/01 00:00 MHDA- 1997/01/01 00:01 CRDT- 1997/01/01 00:00 PHST- 1997/01/01 00:00 [pubmed] PHST- 1997/01/01 00:01 [medline] PHST- 1997/01/01 00:00 [entrez] PST - ppublish SO - Lab Invest. 1997 Jan;76(1):25-36.