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曹广文 主任、教授 第二军医大学流行病学教研室

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Presentation on theme: "曹广文 主任、教授 第二军医大学流行病学教研室"— Presentation transcript:

1 曹广文 主任、教授 第二军医大学流行病学教研室
Clinical relevance and public health significance of hepatitis B virus genomic variations 曹广文 主任、教授 第二军医大学流行病学教研室

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5 Geographic distribution of HBV genotypes A-J

6 Entry of hepatitis B virus
slow replication strong replication immune defence Delayed, vigorous immune response immunotolerance, inapparent, chronic inapparent transient infection acute fulminant incomplete response efficient inefficient HBsAg carrier chronic hepatitis immunity recovery cirrhosis carcinoma

7 donor, immuno-selection
aa-sequence of S-loop

8 Genotype specific residues in the a determinant of SHBs

9 Model of the HBsAg loop (99-161) : escape mutations in an anti-HBs negative, infectious blood donor I a-determinant C121-C148 L L E G145K T

10 Luciferase activities
截短型与野生型HBx在细胞水平的不同功能 Transactivation Cell Growth 80000 50 100 150 200 250 300 350 pcDNA3.1 HBx HBx∆8 HBx∆11 HBx∆14 HBx∆16 HBx∆18 Colonies Chang 70000 a-ML 60000 Luciferase activities 50000 40000 30000 20000 10000 pcDNA3.1 HBx HBx∆8 HBx∆11 HBx∆14 HBx∆16 HBx∆18 x pcDNA3.1 10 20 30 40 50 60 pcDNA3.1 HBx HBx∆8 HBx∆11 HBx∆14 HBx∆16 HBx∆18 Foci REF Transformation x∆8 x∆11 x∆14 x∆16 x∆18

11 Transcription factors binding to HBV Enhancer II/Core-promoter

12 WJG 2009; 15(46): (曹广文)

13 HCC全球死亡率 (Gastroenterology 2007;132:2557-76)

14 Vaccination and prevalence
Vaccination rate (%) HBsAg prevalence (%) Age (years old)

15 第二军医大学流行病学专业在HBV方面工作
Journal of Clinical Virolology 2007; 38: (通讯作者:曹广文).

16 Cancer Epidemiology, Biomarkers & Prevention 2010;19(3):777-86 (通讯作者:曹广文)

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19 Gut 2008;57(12): (通讯作者:曹广文)

20 Carcinogenesis 2008;29(9):1685-91 (通讯作者:曹广文)

21 WJG 2010; 16(3): (通讯作者:曹广文)

22 Journal of National Cancer Institute 2009;101(15):1066-82 (通讯作者:曹广文)

23 American Journal of Gastroenterology 2010 in press (通讯作者:曹广文)

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25 Journal of Gastroenterology 2010 in press(通讯作者:曹广文)

26 Journal of Medical Viology 2010 in press(通讯作者:曹广文)

27 Carcinogenesis 2009;30(11):1916-1922 (通讯作者:曹广文)

28 The important thing is not to stop questioning Albert Einstein
1. How to predict HCC? 2. What kinds of clinical protocol feasible for stopping the progression into HCC? 3. How long does HBV accompany with human evolution? 4. Is there any genetic predisposition for HBV?

29 Thank you!


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