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?????? Polymerase chain reaction, PCR

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Polymerase chain reaction, PCR PCR PCR DNA DNA ... – PowerPoint PPT presentation

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Title: ?????? Polymerase chain reaction, PCR


1
??????Polymerase chain reaction, PCR
2
?????PCR?
  • PCR???????DNA???????DNA?????,??????????????
    ?DNA???

3
??PCR????????
  • 1869? Friedrich Miescher ??DNA?
  • 1953? Waston?Crick???DNA??????
  • 1958? Matthew Meselson?Franklin Stahl??
  • ?DNA?????????
  • 1960s?????????? ?
  • 1960????70?????????????
  • 1985? ??PE-cetus???????????
  • mullis?????PCR???

4
??PCR?????
  • ?????DNA????
  • ?
  • ?????????????DNA??
  • ?
  • ?Taq DNA???,dNTPs,Mg2???pH????????????
  • ?
  • ?????????????????25-40??????????????,
  • ??????????????

5
PCR?????
??DNA
??,??
DNA????????,????????DNA
????,??
6
?????DNA??
????
???????DNA?????DNA?
????????,??DNA????
7
??PCR??????
  • PCR??????
  • ??DNA?????? dNTP?Mg2 ?????

8
1. DNA??
  • ????,????
  • ??????
  • ??????
  • ???????
  • ????????PCR?????,????DNA?

9
  • ???DNA????
  • ???????????,????????????,??????????????????,??????
    ??
  • ???DNA????
  • ???????(????)????,????PCR???

10
2.??Primer
  • ??(primer)?PCR????????,PCR??????????????,?
    ??????DNA???????????????????
  • ????????????????????

11
????????
  • ???????1530bp??
  • ?????????200500bp??
  • ???????????
  • ????GC????4555??

12
  • ????????????
  • ??????
  • ??3????????DNA????
  • 3??????????T?C?G,???A

13
  • ??5????????????
  • ???????????????
  • ???????0.10.5µmol/L,????????????????

14
3. ?????????dNTP
  • ?????20-200µmol/L
  • ?????dNTP?????????????????????
  • ??dNTPs???????
  • dNTP?????????,???dNTP??510mmol/L???,?NaOH?pH???,?
    ??-20??? ?

15
4. Taq DNA???
  • ????PCR?????Klenow?
  • ???????
  • ????????
  • ????Taq DNA???,??????????
  • ??1-2.5U/100µ1??????

16
  • ???????Taq DNA?????
  • ??????????????
  • ????????????

17
5. Mg2
  • Mg2????DNA?????????
  • Mg2??????1.52.0mmol/L,??dNTP???200µmol/L???
  • ????????DNA?????????????EDTA,??????????????????,?
    ????

18
6.???????
  • ??????????1050mmol/L Tris-HCl(pH8.38.8,20?)?
  • ??????50mmol/L???KC1???????.
  • ???????(100µg/ml)???(0.01)?Tween
    20(0.05-0.1)???Taq DNA???????
  • ??????????(10)????(DMSO)?????????,??PCR??????

19
??PCR??????
  • 1. ?????????
  • ?????,94? 1min???????????
  • ?????????????,??Taq DNA??????dNTP???????

20
  • 2. ?????????
  • ???????PCR??????,???????????GC???
  • ??????1525bp???,???????????Tm4(GC)2(AT)

21
  • 3.?????????
  • ???????7075???,??,Taq DNA???????????????????????
    ??
  • ???????????????72 ?????????35100????/??

22
  • 4.????
  • ????????????
  • ?????????????,???????????DNA??????
  • ?????DNA?3105,1.5104,1103?50?????,????????2530
    ,3035,3540,4045?
  • ??????????????????

23
  • 5???????
  • ?1 ?????? ?2 ???????
  • yA2n
    yA(1R)n
  • y???? n???? A??????R??????

y
y
n
n
24
  • ???PCR??????100
  • ?PCR?????,??DNA???????,?????????,???dNTPs?????????
    ???????????,PCR??????,PCR?????????????????????????
    ??
  • ??YA(1R)n???PCR?????

25
??????
  • ???????????????? ???
  • ????????????,?????????(?,HLA-DQa??)
  • Southern????????????????????????,?????????????
  • PCR-ELISA,PCR-EIA,PCR-OLA?????????????

26
PCR?????
  • 1. ??????
  • 2. ??????
  • 3. ??????
  • 4. ????????

27
PCR??????
  • Taq DNA???????PCR?????????
  • 1988?,PE-cetus???????PCR????
  • 1995?,??PCR????

28
???PCR?????
  • ?????3????????,????????????????????
  • ???????,???
  • ?????,???????

29
  • ?????/???????
  • ??????????????????????,??????????,????????????
    ????????
  • ??????????,???
  • ??????????????,
  • ??????

30
  • ???????????
  • ??????????,?????????????PCR???
  • ??????????
  • ??????,?????
  • Taq DNA???????

31
(No Transcript)
32
(No Transcript)
33
(No Transcript)
34
PCR?????
35
  • ??????????
  • ???????

1 2 3 4
1.????? 2.Basts???? 3.?????????? 4.?????
PCR??a-??Basts??????
36
??????
  • ?????????(human immunodeficiency
    virus,HIV)?????
  • ??????????????????????
  • PCR??????????????????,???????DNA?????????,????????
    ???????????

37
??????????
  • ??ras???
  • p53???
  • PCR ???????????

38
PCR????????
  • ??????
  • ????
  • ????
  • 1985?,??????Jeffreys???DNA???(DNA
    fingerprint),??????????????????????????(RFLP)?

39
PCR??????????????
  • DNA??
  • ???????????
  • ??PCR
  • DNA?????
  • ????

40
??!
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