一氢核磁共振的血浆代谢组学分析维生素B_(12)对地塞米松诱导腭裂小鼠的阻抑作用

Analyzing the inhibition of vitamin B_（12） to dexamethasone-induced palatognathous mouse using ~1H-nuclear magnetic resonance based metabonomics method

目的采用基于一氢核磁共振(1H-NMR)的代谢组学方法研究使用维生素B12后,阻抑本已诱发的唇腭裂发育早期过程的变化,并评估其可行性。方法选取对照组和实验组各12只怀孕17.5d的C57BL/6J雌鼠,分别是仅注射维生素B12的孕鼠和注射维生素B12后再注射过量地塞米松引起腭裂的孕鼠,处理动物的血浆样本,并且观察B12对腭裂产生率的的影响。利用核磁共振技术检测血浆内源性小分子代谢产物,通过主成分分析方法(PCA)确定代谢物成分的变化。结果根据2组腭裂是否发生,PCA得分散点图产生了显著的差别。结论核磁共振的代谢组学方法是一种可行和有效的方法,可以深入探索唇腭裂的发病机制,并且为以后研究维生素B12的代谢机制奠定了基础。

Objective Metabonomic analysis has been increasingly used to monitor metabolic abnormalities in cells and their micro-environment in order to detect the biomarkers recently. This study evaluated the feasibility of applying 1H-nuclear magnetic resonance（1H-NMR） based metabonomic method to detect the differences of the early development of cleft palate in the plasma from control group and experimental group. Methods Pregnant mice（inbred C57BL/6J strain） with vitamin B12 injected only were assigned as the control group, pregnant mice with excessive Dex, injected after vitamin B12 as the experimental group, each group includes 12 mice. And the effect of B12 to rate of cleft palate was observed. The technology of nuclear magnetic resonance（NMR） was used to detect the endogenous small molecule metabolites. Finally, changes of metabolites ingredients were ascertained by using the method of principal component analysis（PCA）. Results There was significant difference in PCA scores plot between the two groups according to whether cleft palate occured. Conclusion The 1H-NMR based metabonomic approach might be used as a feasible and efficient method for a deep exploration of the pathogenesis of cleft lip and palate and an early exploration of the mechanism of vitamin B12.