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Role of specific Role of specific hemagglutinin amino acids hemagglutinin amino acids in the in the immunogenicity and immunogenicity and protection of protection of H5N1 influenza virus H5N1 influenza virus vaccines vaccines Hoffmann E Hoffmann E et al et al (2005)PNAS (2005)PNAS vol.102 vol.102 12915-12920 12915-12920 葉葉葉 葉葉葉

Role of specific hemagglutinin amino acids in the immunogenicity and protection of H5N1 influenza virus vaccines Hoffmann E et al(2005)PNAS vol.102 12915-12920

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Page 1: Role of specific hemagglutinin amino acids in the immunogenicity and protection of H5N1 influenza virus vaccines Hoffmann E et al(2005)PNAS vol.102 12915-12920

Role of specific hemagglutinin Role of specific hemagglutinin amino acids in theamino acids in the

immunogenicity and protection immunogenicity and protection of of

H5N1 influenza virus H5N1 influenza virus vaccinesvaccines

Hoffmann E Hoffmann E et alet al(2005)PNAS (2005)PNAS vol.102 12915-12920vol.102 12915-12920

葉修宏葉修宏

Page 2: Role of specific hemagglutinin amino acids in the immunogenicity and protection of H5N1 influenza virus vaccines Hoffmann E et al(2005)PNAS vol.102 12915-12920

IntroductionIntroduction

Influenza virus(Influenza virus( 流感病毒流感病毒 ))

Page 3: Role of specific hemagglutinin amino acids in the immunogenicity and protection of H5N1 influenza virus vaccines Hoffmann E et al(2005)PNAS vol.102 12915-12920

HAHA

Page 4: Role of specific hemagglutinin amino acids in the immunogenicity and protection of H5N1 influenza virus vaccines Hoffmann E et al(2005)PNAS vol.102 12915-12920
Page 5: Role of specific hemagglutinin amino acids in the immunogenicity and protection of H5N1 influenza virus vaccines Hoffmann E et al(2005)PNAS vol.102 12915-12920
Page 6: Role of specific hemagglutinin amino acids in the immunogenicity and protection of H5N1 influenza virus vaccines Hoffmann E et al(2005)PNAS vol.102 12915-12920
Page 7: Role of specific hemagglutinin amino acids in the immunogenicity and protection of H5N1 influenza virus vaccines Hoffmann E et al(2005)PNAS vol.102 12915-12920

AbstractAbstract

作者比對作者比對 AA//HKHK//213213//03 (H5N1) viruses 03 (H5N1) viruses and Aand A//VietnamVietnam//12031203//04 (H5N1) viruses04 (H5N1) viruses 兩株病毒的兩株病毒的 HAHA 序列。發現此二株病毒的序列。發現此二株病毒的HAHA 胺基酸差異有胺基酸差異有 1010 個位置。個位置。

而因為病毒容易突變,導致剛開發出來的而因為病毒容易突變,導致剛開發出來的疫苗,很快就會失去效用。而作者希望能疫苗,很快就會失去效用。而作者希望能找到一個對於找到一個對於 H5N1H5N1 是很重要的胺基酸抗是很重要的胺基酸抗原結合位,以便加以開發廣效性的疫苗。原結合位,以便加以開發廣效性的疫苗。

Page 8: Role of specific hemagglutinin amino acids in the immunogenicity and protection of H5N1 influenza virus vaccines Hoffmann E et al(2005)PNAS vol.102 12915-12920

病毒免疫測試病毒免疫測試 (A)(A)及抗體效力測試及抗體效力測試 (B)(B)

Page 9: Role of specific hemagglutinin amino acids in the immunogenicity and protection of H5N1 influenza virus vaccines Hoffmann E et al(2005)PNAS vol.102 12915-12920
Page 10: Role of specific hemagglutinin amino acids in the immunogenicity and protection of H5N1 influenza virus vaccines Hoffmann E et al(2005)PNAS vol.102 12915-12920
Page 11: Role of specific hemagglutinin amino acids in the immunogenicity and protection of H5N1 influenza virus vaccines Hoffmann E et al(2005)PNAS vol.102 12915-12920
Page 12: Role of specific hemagglutinin amino acids in the immunogenicity and protection of H5N1 influenza virus vaccines Hoffmann E et al(2005)PNAS vol.102 12915-12920
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discussiondiscussion

1.1. 作者原本推斷作者原本推斷 HAHA 上的上的 154154 醣化位跟使醣化位跟使 HAHA 受遮受遮蔽,而導致無法與蔽,而導致無法與 sialic acidsialic acid 結合有關,但後來結合有關,但後來發現並不是。發現並不是。

2.HA2.HA 的的 223223 胺基酸位置很重要。胺基酸位置很重要。3.3. 利用基因工程改變特殊殘基,其可使抗原較易偵利用基因工程改變特殊殘基,其可使抗原較易偵

測,且產生免疫反應。 測,且產生免疫反應。 4.4. 利用利用 HI testHI test 可對禽流感做快速檢測。也可利用這可對禽流感做快速檢測。也可利用這

些資訊來研究些資訊來研究 H5N1H5N1 是否可以用於人傳人的研究是否可以用於人傳人的研究上。上。