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In vivo cell kinetics of the bone marrow transplantation using dual colored transgenic rat system

机译:使用双色转基因大鼠系统的骨髓移植体内的体内细胞动力学

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Because bone marrow is an adequate site for bone marrow stem cells, intra-bone marrow - bone marrow transplantation (IBM-BMT) is an efficient strategy for bone marrow transplantation (BMT). However, the fate of the transplanted cells remains unclear. Herein, we established a dual-colored transgenic rat system utilizing green fluorescent protein (GFP) and a luciferase (luc) marker. We then utilized this system to investigate the in vivo kinetics of transplanted bone marrow cells (BMCs) after authentic intravenous (IV)-BMT or IBM-BMT. The in vivo fate of the transplanted cells was tracked using an in vivo luminescent imaging technique; alterations in peripheral blood chimerism were also followed using flow cytometry. IBM-BMT and IV-BMT were performed using syngeneic and allogeneic rat combinations. While no difference in the proliferation pattern was observed between the two treatment groups at 7 days after BMT, different distribution patterns were clearly observed during the early phase. In the IBM-BMT-treated rats, the transplanted BMCs were engrafted immediately at the site of the injected bone marrow and expanded more rapidly than in the IV-BMT-treated rats during this phase. Graft-versus-host disease was also visualized. Our bio-imaging system using dual-colored transgenic rats is a powerful tool for performing quantitative and morphological assessments in vivo.
机译:由于骨髓是骨髓干细胞的足够位点,骨内骨髓 - 骨髓移植(IBM-BMT)是骨髓移植(BMT)的有效策略。然而,移植细胞的命运仍然不清楚。在此,我们建立了利用绿色荧光蛋白(GFP)和荧光素酶(LUC)标记的双色转基因大鼠系统。然后,我们利用该系统在正宗静脉内(IV)-BMT或IBM-BMT之后研究移植的骨髓细胞(BMC)的体内动力学。使用体内发光成像技术跟踪移植细胞的体内命运;使用流式细胞术,还遵循外周血胆晶的变化。使用Syngeneic和同种异体大鼠组合进行IBM-BMT和IV-BMT。虽然在BMT后7天在两种治疗组之间观察到增殖模式的差异,但在早期期间清楚地观察到不同的分布模式。在IBM-BMT处理的大鼠中,移植的BMC在注射的骨髓的部位立即植入并在该阶段期间膨胀比IV-BMT处理的大鼠更快。移植物与宿主病也是可视化的。我们使用双色转基因大鼠的生物成像系统是用于在体内进行定量和形态评估的强大工具。

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