yi-ming arthur chen ( 陳宜民 ), m.d., sc.d. dean, office of r & d institute of microbiology...
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Yi-Ming Arthur Chen (陳宜民 ), M.D., Sc.D.Dean, Office of R & D
Institute of Microbiology and ImmunologyAIDS Prevention and Research Center
National Yang-Ming University
Molecular Epidemiology of HIV and HCV Infection in Taiwan and the Development of Most Sensitive Diagnostic Methods to
Detect SARS Corona Virus and H1N1 Viruses
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Total: 33.4 million (31.1 – 35.8 million)
Western & Central Europe
850 000850 000[710 000 – 970 000][710 000 – 970 000]
Middle East & North Africa
310 000310 000[250 000 – 380 000][250 000 – 380 000]Sub-Saharan Africa
22.4 million22.4 million[20.8 – 24.1 million][20.8 – 24.1 million]
Eastern Europe & Central Asia
1.5 million 1.5 million [1.4 – 1.7 million][1.4 – 1.7 million]
South & South-East Asia
3.8 million3.8 million[3.4 – 4.3 million][3.4 – 4.3 million]Oceania
59 00059 000[51 000 – 68 000][51 000 – 68 000]
North America1.4 million
[1.2 – 1.6 million]
Latin America2.0 million2.0 million
[1.8 – 2.2 million][1.8 – 2.2 million]
East Asia850 000850 000
[700 000 – 1.0 million][700 000 – 1.0 million]Caribbean240 000
[220 000 – 260 000]
Adults and children estimated to be living with HIV, 2008
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Figure. Classification of human immunodeficiency viruses (HIV). HIV-1recombinants are categorized into two class: circulating recombinant forms (CRFs) and unique recombinant forms (URFs).
Takebe et al, Pediatr Int 2004
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HIV-1 diversity in the worldwide epidemic.
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聯合報 2005年一月
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台灣愛滋病毒感染者報告病例數依危險因子分析
注射藥癮者癮者
男同志及男雙性戀者 異性戀者
Chen et al, Lancet, 369: 623-625, 2007.
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BC亞型基因重組病毒株( CRF07_BC)傳到台灣來的可能路徑
Chen and Kuo, Lancet 2007.
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Molecular Epidemiology of HIV-1 Infection and Full-Length Genomic Analysis of Circulating Recombinant Form 07_BC
Strains from Injection Drug Users in Taiwan
Lin et al. JID 2007;195:1283-1293.
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Phylogenetic analysis ofHIV-1 strains in Taiwanese IDUs.J Acquir Immune Defic Syndr 2010;53:425–439
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Sharing dissolved heroine solution is a neglected risk factor associated with HIV-1 infectionJ Acquir Immune Defic Syndr 2010;53:425–439
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Genotype Assigned subtypes
1 a, b, c, d, e, f, g, h, i, j, k, l, m
2 a, b, c, d, e, f, g, h, i, k, l, m
3 a, b, c, d, e, f, g, h, i, k
4 a, c, d, e, f, g, h, k, l, m, n, o, p, q, r, s, t
5 a
6 a, b, d, f, g, h, i, j, k, l, m, n, o, p, q
HCV SEQUENCE DATA BASE
Genotypes 1~6 (30% variation), many subtypes (20% variation)
Hepatitis C Virus
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Subjects Selected all IDU samples which were infected with CRF07_BC
before 2003 and random sampling CRF07_BC cases which was infected in 2004,2005 classified by northern, central, southern Taiwan each 50.
Selected all samples infected with HIV-1 B type and CRF01_AE
Northern Taiwan(Taipei prison,
Tucheng detentioncenter)
Central Taiwan( Taichung, Nantou detention center,
Yunlin 2nd prison)
South Taiwan( Tainan detention
center)
B type CRF01_AE Total
n=50 n=50 n=50 n=20 n=10 n=180
CRF_07BC
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J Formosa Med Asso, in press, 2010.
HCV genotyping using multiplex RT-PCR assay with specific primers
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Phylogenetic analyses of three HCV subtype 6w strains using maximum likelihood
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Diversity plot of the HCV RF_2b6w strain
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Summary of the Molecular Epi Studies The Taiwanese CRF07_BC strains had 97% full-length
sequence homology with the prototype from mainland China. CRF07_BC was first introduced into the southern region in 2002 and then spread to other regions in Taiwan in 2004.
With HIV-1 CRF07_BC disseminating in Taiwan IDUs, there were new HCV subtypes emerging in Taiwan, eg., 6w.
About 13% of HIV-1-infected IDUs had mixed HCV infection and multiplex RT-PCR with specific primers method is suitable for the detection of such mixed HCV infection.
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Localized Surface Plasmon Coupled Fluorescence Fiber-optic Biosensor and It’s Biomedical Applications (LSPCF-FOB)
表面電漿共振原理 :藉由雷射激發金膜,而促使金膜產生表面電漿波,當 coating在上面的 antibody 有 binding 上 antigen protein時,其共振角會改變而 detector就偵測反射角的變化來判斷是否有 protein被抓住。
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Successfully detected at concentrationsas low as 12.5 - 25ng/ml in PBS.
Successfully detected at concentrationsas low as 0.78 – 1.56 ng/ml in diluted
Conventional antigen capture ELISA
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Successfully detected at concentrationsas low as 0.1pg/ml in PBS.
Successfully detected at concentrationsas low as 0.1pg/ml in diluted serum.
GST-N protein test in LSPCF fiber-optic biosensor
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Acknowledgements
National Yang-Ming University:Prof. Chen’s Lab: Jer-Yuan Shiu , Shwu-Jen Tzeng , Kuan-
Hsuan Chen , Hsiao-Han Liu , Cheng-Ming Lee , Chia-Yen Chen , Jung-Hsien Hung, Chia-Hung Yen , Pei-Chun Chuang , Ying-Shiuan Li , Yi-Jen Liao , Ching-Ping Yang, Shih-Ping Liu, Shih-Yin Chen, Yu-Chuen Huang, Yu-Ching Lan
Inst. of Env. and Occu. Health Sci.: Tsung-Yun Liu
Department of Life Sci : Ting-Fen Tsai , Fen-Hwa Wong
Inst. of Micro. and Immuno.: Chi-Hung Lin
Inst. of Biophotonic: Fu-Jen Kao
Inst. of Biochem. and Mol. Biol.: Yan-Hwa Wu Lee
Academia Sinica: Ying-Hue Lee, Michael Hsiao, Chen Chang, Lee- Young Chau
Chung-Hsing University: En-Pei Chiang
Chang-Gung University: Ling-Ling Hsieh
NHRI: Shiu-Feng Huang
Taipei VGH: Anna Fen-Yau Li ,Teh-Ying Chou, Wing-Wai Wong
Taiwan CDCJyh-Yuan Yang, Steve Kuo
Supported by NYMU, NSC, DOH and MOE
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Thank you for your attention
and welcome to Taiwan