DNA多态性分析技术检测异基因造血干细胞移植后植活的证据

Study on DNA Polymorphism Analysis Technique as an Evidence of Engraftment Status after Allogeneic Hematopoietic Stem Cell Transplantation

目的探讨DNA多态性分析技术检测患者移植后植入状态的可行性及在患者移植的预后和疾病复发的预警作用。方法应用DNA多态性分析技术对66例异基因造血干细胞移植(Allo-HSCT)术中患者移植前、后及供者的基因分型进行检测,并对25例进行追踪监测和动态分析。结果48例Allo-HSCT术后,患者基因分型表现为供者源型,13例表现为受者源型,5例表现为嵌合状态型;通过对25例追踪监测和动态分析,发现2例供者源型转为受/供者嵌合状态型,4例嵌合状态型转为供者源型,其他未见变化。结论DNA多态性分析技术可快速、准确地检测患者移植物的植入状态,为临床移植提供准确、可靠的实验指标,为进一步制定治疗方案提供依据。

Objective To evaluate engraftment status of patients after allogeneic hematopoietic stem cell transplantation(Allo-HSCT) and prompt relapse of disease based on DNA polymorphism analysis technique.Methods Sixty-six cases were detected by DNA polymorphism analysis technique and 25 cases were monitored and analyzed dynamically during this period.Results After Allo-HSCT,48 patients obtained type of donors,but 13 patients did not; 5 patients showed mixed chimerism.Two cases of type of donors converted into mixed chimerism and 4 cases of mixed chimerism converted into type of donors after some time. The others' engraftment status did not change.Conclusion DNA polymorphism analysis technique can detect engraftment status of patients exactly, rapidly, which provides effective evidences of constitution for more clinical therapy projects.