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Mitochondrial genic disorders

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... 1 Leber (Leber hereditary optic neuropathy,LHON) ... – PowerPoint PPT presentation

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Title: Mitochondrial genic disorders


1
??? ??????
  • Mitochondrial genic disorders

2
  • ??????????DNA?,???????????????????????,??????????
    ??

3
  • ??mtDNA???
  • ?????????????
  • ????????

4
?? ???DNA ???
  • 1??????????
  • (1)??
  • ??????????????????
  • ????,?????????
  • (2)??
  • ?????????????????
  • ???????

5
  • 2????DNA(mtDNA)????
  • ??????,????25????,M???,???????
  • ??16,569?????????DNA?????37???13???????????,?????
    ?????????????????????22?tRNA?????2?rRNA?????

6
(No Transcript)
7
  • 3? nDNA?mtDNA???

8
????????????
  • 1?????(matrilinear inheritance)
  • ???????????????,???????????????????????,??????DNA?
    ????????????????,????????????

9
(No Transcript)
10
????????
11
  • 2?????
  • ?????????????????DNA(mtDNA)???
  • ???????????????mtDNA????????,?????????(homoplasmy)
    ?
  • ??????????mtDNA?????????????????????,??????(hetero
    plasmy)

12
  • (1)???,???mtDNA??????????,????????(??)
  • (2)??mtDNA??????????????????

13
(No Transcript)
14
  • 3????????????,??????????????

15
????????
  • 1?Leber???????(Leber hereditary optic
    neuropathy,LHON)
  • ????????????(20-25?)
  • (1)????????????
  • (2)?????,??????
  • (3)????
  • (4)??????,?????

16
  • ?????????
  • ????????I NADH-????????1????????
  • MTND1LHON4160T?C,??50-75(???)
  • MTND1LHON3460G?A,??15-25(???)
  • MTND1LHON3394T?C,??15-25(???)

17
  • 2??????????????????????(mitochondrial
    encephalomyopathy, lactic acidosis,and
    stroke-like episodes,MELAS)
  • ????
  • (1)?????
  • (2)??
  • (3)?????
  • (4)?????????
  • (5)??
  • (6)?????????,?????

18
  • ?????????
  • ???tRNALeu????
  • MTTL1MELAS 3243 T ?C?A ?G
  • ??????I NADH-????????4??????????
  • MTND4MELAS 11084A ?G

19
??????????????
  • ??mtDNA???????????????,??????????????????????,????
    ???????????????

20
(No Transcript)
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