Cell lineage in vascularized bone transplantation.

Cell lineage in vascularized bone transplantation.
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DOI:
10.1002/micr.22147
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发表时间:
2014-01
期刊:
影响因子:
2.1
通讯作者:
Bishop, Allen T.
Bishop, Allen T.
中科院分区:
医学3区
文献类型:
--
作者:
Willems, Wouter F.;Larsen, Mikko;Friedrich, Patricia F.;Bishop, Allen T.

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血管化骨同种异体移植背后的生物学原理仍然很大程度上未知。我们的目标是研究自体骨移植和同种异体移植后供体和受体之间的细胞交通。在 4 周和 18 周时,在大鼠模型中对带血管的同种异体骨移植物和同种移植物进行了分析。骨重塑区域被激光捕获显微解剖。 RT-PCR 分析测量供体细胞与受体细胞的相对表达比 (rER)。同种异体移植中 4 周时的 rER 为 0.456 (+/-0.266),18 周时为 0.749 (+/-0.387),这意味着供体骨逐渐被受体骨形成细胞重新填充。在同种移植中,第 4 周时的 rER 为 0.412 (+/-0.239),第 18 周时的 rER 为 0.467 (+/-0.252)。 18周时,同种移植中内外皮质骨重塑区域的细胞主要来自供体(rER<0.5),同种移植中主要来自受者(rER>0.5)。应用新颖的方法,我们描述了血管化骨移植中详细的细胞交通,阐述了我们对骨移植的理解。
The biology behind vascularized bone allotransplantation remains largely unknown. We aim to study cell traffic between donor and recipient following bone auto,-and allografting. Vascularized bone allografts and isografts were analyzed in a rat model at 4 and 18 weeks. Bone remodeling areas were laser capture microdissected. Analysis by RT-PCR measured the relative Expression Ratio (rER) of donor to recipient cells. The rER was 0.456 (+/−0.266) at 4 weeks in allotransplants and 0.749 (+/−0.387) at 18 weeks, implying donor bone was gradually repopulated with recipient bone forming cells. In isotransplants, rER was 0.412 (+/−0.239) at 4 and 0.467 (+/−0.252) at 18 weeks. Cells in the inner and outer cortical bone remodeling areas were mainly donor derived (rER<0.5) at 18 weeks in isotransplants and mainly recipient derived in allotransplants (rER>0.5). Applying novel methodology we describe detailed cell traffic in vascularized bone transplants, elaborating our comprehension on bone transplantation.
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