|
Journal of Zhejiang University SCIENCE B
ISSN 1673-1581(Print), 1862-1783(Online), Monthly
2017 Vol.18 No.6 P.549-554
Full genome analysis of swine genotype 3 hepatitis E virus isolated from eastern China
Abstract: Hepatitis E is believed to occur in both endemic and sporadic forms in developing countries, which causes a major public health problem in Asia and Africa (Meng, 2010; Wang et al., 2016a). Recent studies have documented that the disease is also endemic in many industrialized countries (Wenzel et al., 2011). The causative agent, hepatitis E virus (HEV), belonging to the genus Orthohepevirus, is a non-enveloped RNA virus with a single-stranded, positive-sense genome of approximately 7.2 kb (Smith et al., 2014). The genome consists of a short 5' un-translated region (UTR), three open reading frames (ORFs), and a 3' UTR containing a poly(A) tail (Meng, 2011). Four recognized major genotypes of HEV are identified: genotype 1 (Asian and African strains), genotype 2 (a Mexican strain), genotype 3 (primarily from America and Europe, and some Asian countries), and genotype 4 (mainly Asian strains) (Smith et al., 2016). Previous study revealed that HEV genotype 4 is the dominant zoonotic HEV genotype in China (Wang et al., 2016a). However, infections with HEV 3 have been found more commonly in recent years in China (Liu et al., 2012; Zhang et al., 2013). To date, only one full genome of Chinese swine genotype 3 HEV strain from Shanghai has been documented (Si et al., 2009). We report here the first full genome sequence of a genotype 3 swine HEV strain from Zhejiang, China.
Key words: Swine hepatitis E virus; Full genome sequence; Phylogenetic analysis; Genotype 3
创新点:首次分æžæŠ¥é“æµ™æ±Ÿåœ°åŒºåŸºå› 3型猪戊型è‚炎病毒全åºåˆ—。
方法:利用套å¼PCR和末端快速扩增法对分离自浙江地区的戊型è‚炎病毒进行分段扩增,ç»å…‹éš†æµ‹åºåŽæ‹¼æŽ¥å…¨åŸºå› 组。进一æ¥åˆ©ç”¨ç”Ÿç‰©ä¿¡æ¯å¦æ–¹æ³•å¯¹åŸºå› 组结构ã€å¼€æ”¾é˜…读框åŠå…¶åŸºå› åž‹ç‰è¿›è¡Œåˆ†æžï¼Œå¹¶ä¸Žå›½å†…外戊型è‚ç‚Žæ¯’æ ªè¿›è¡Œæ¯”è¾ƒåˆ†æžã€‚
ç»“è®ºï¼šæµ™æ±Ÿæ ªæˆŠåž‹è‚炎病毒(ZhJ-PJ050-3ï¼‰åŸºå› ç»„ç”±7223ä¸ªæ ¸è‹·é…¸ç»„æˆï¼Œå…¶ä¸3’éžç¼–ç 区å«æœ‰23个碱基的poly(A)å°¾ã€‚å…¨åŸºå› ç»„åŒ…å«ORF1ã€ORF2å’ŒORF3三个主è¦åŸºå› ,长度分别为5109ã€1983å’Œ342 bp。进化分æžæ˜¾ç¤ºï¼ŒZhJ-PJ050-3ä¸ºåŸºå› 3型,与国内唯一报é“çš„ä¸Šæµ·æ ª3åž‹æ¯’æ ªä»¥åŠå¤šæ•°æ—¥æœ¬æ¯’æ ªå…±å±ž3b亚型。与国内外戊型è‚ç‚Žåºåˆ—比对å‘现,ZhJ-PJ050-3åŸºå› ç»„å…±æœ‰24个特有的点çªå˜ï¼Œä¸”在ORF1ä¸å«æœ‰ä¸€ä¸ªäº®æ°¨é…¸ç¼ºå¤±ã€‚这些分å特å¾å°†ä¸ºä¸‹ä¸€æ¥çš„ç ”ç©¶æ供方å‘。
关键è¯ç»„:
References:
Open peer comments: Debate/Discuss/Question/Opinion
<1>
DOI:
10.1631/jzus.B1600419
CLC number:
S852.65
Download Full Text:
Downloaded:
2432
Download summary:
<Click Here>Downloaded:
1823Clicked:
4520
Cited:
0
On-line Access:
2024-08-27
Received:
2023-10-17
Revision Accepted:
2024-05-08
Crosschecked:
2017-05-10