Adhesion molecules involved in the binding of murine myeloma cells to bone marrow stromal elements

Adhesion molecules involved in the binding of murine myeloma cells to bone marrow stromal elements
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参与小鼠骨髓瘤细胞与骨髓基质成分结合的粘附分子

DOI:
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发表时间:
1995
影响因子:
6.4
通讯作者:
R. Hawley
R. Hawley
中科院分区:
医学1区
文献类型:
--
作者:
T. Okada;R. Hawley

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在前期工作中,我们报道了B 9/BM 1同基因小鼠骨髓转移模型的建立。白细胞介素(IL)-6依赖性、产生IL-1的B 9/BM 1细胞在静脉注射后优先归巢并定植于脊椎和股骨骨髓,其细胞表面表型与人骨髓瘤细胞惊人相似,尤其是3种粘附分子CD 44、VLA-4和ICAM-1的表达。由于造血微环境由不同的细胞类型组成,如内皮细胞、成纤维细胞、脂肪细胞和巨噬细胞,我们在B 9/BM 1细胞与新建立的骨髓源性内皮细胞系(BMEC)、成纤维细胞样前脂肪细胞系(BMS2.2)和原代骨髓源性巨噬细胞之间的异型结合试验中研究了这些粘附分子的功能意义。B 9/BM 1细胞与所有基质成分粘附良好:抗CD 44和VLA-4的单克隆抗体(MAb)组合显著抑制B 9/BM 1细胞与BMEC和BMS2.2细胞的粘附,而B 9/BM 1细胞与巨噬细胞的结合被抗ICAM-1 MAb部分阻断。我们的研究结果暗示了多种识别机制,包括涉及CD 44,VLA-4和ICAM-I的机制,在B 9/BM 1细胞在骨髓中的保留中。© 1995 Wiley利斯公司
In previous work, we reported the development of the B9/BM1 syngeneic murine bone marrow metastasis model. Interleukin (IL)‐6–dependent, IL‐1–producing B9/BM1 cells, which preferentially home to and colonise the vertebral and femoral marrow after i.v. injection, exhibit striking similarity in cell surface phenotype to human myeloma cells, especially the expression of 3 adhesion molecules, CD44, VLA‐4 and ICAM‐I. Because the haematopoietic microenvironment consists of different cell types, such as endothelial cells, fibroblasts, adipo‐cytes and macrophages, we investigated the functional significance of these adhesion molecules in heterotypic binding assays between B9/BM1 cells and a newly established bone marrow‐derived endothelial cell line (BMEC), a fibroblastoid pre‐adipocyte cell line (BMS2.2) and primary bone marrow‐derived macrophages. B9/BM1 cells adhered well to all stromal elements: a combination of monoclonal antibodies (MAbs) against CD44 and VLA‐4 significantly inhibited the adherence of B9/ BM1 cells to BMEC and BMS2.2 cells, whereas binding of B9/BM1 cells to macrophages was partially blocked with an anti‐ICAM‐I MAb. Our results implicate multiple recognition mechanisms, including those involving CD44, VLA‐4 and ICAM‐I, in the retention of B9/BM1 cells in the bone marrow. © 1995 Wiley‐Liss, Inc.
逆转录病毒转导的 IL-1 α 在 IL-6 依赖性 B 细胞中的表达:侵袭性多发性骨髓瘤的小鼠模型。
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