重组分枝杆菌噬菌体检测分枝杆菌的发光研究

A Comparison Study of Luminescent Characters of Two Recombinant Mycobacteriophages

采用生物发光方法检测重组的分支杆菌噬菌体对不同细菌的发光反应 ,并比较了仅在特定的温度范围内才能繁殖的温敏噬菌体Phage 88和正常噬菌体Phage 40对分枝杆菌感染活力测定时发光强度的差异 ,以建立用不同类型重组噬菌体检测结核分枝杆菌耐药性的方法和条件 .结果显示两种噬菌体对各种分枝杆菌作用后均有发光 ,对非分枝杆菌发光值很低 ,两者差异有显著性 ;不同的分枝杆菌发光值有差异 :卡介苗的发光值最高 ,结核分枝杆菌的发光值最低 ;温敏噬菌体Phage 88的检测灵敏度大于正常噬菌体Phage 40 ,差异显著 .因此可认为两株噬菌体均可特异地检测结核分枝杆菌 ,但Phage 88的效果优于Phage 40 .

To compare the luminescent characters in different bacteria of two different recombinant mycobaceriaphages by using biolimenescent methods in order to understand the differences between sensitivity and specificity of these phages, and to set up methods to use recombinant mycobacteriaphages in detecting drug suscepbility of mycobacteria. Result showed that both two phages have high light production in action with mycobacterium selectively and have almost no light production with E.coli , the difference is very obvious. Among different mycobacterium, BCG has the highest light production and mycobacterium tuberculosis has the lowest light production. The sensitivity of Phage 88 is higher than Phage 40, the difference is obviously. It can be considered that both recombinant mycobacteriaphages can detect mycobacterium specifically, but Phage 88 is more suitable for clinical usage.