中国动物传染病学报
中國動物傳染病學報
중국동물전염병학보
CHINESE JOURNAL OF VETERINARY PARASITOLOGY
2012年
1期
32-37
,共6页
朱建平%周艳君%王亚欣%虞凌雪%吴玉璐%童武%姜一峰%朱礼倩%于海%童光志
硃建平%週豔君%王亞訢%虞凌雪%吳玉璐%童武%薑一峰%硃禮倩%于海%童光誌
주건평%주염군%왕아흔%우릉설%오옥로%동무%강일봉%주례천%우해%동광지
猪繁殖与呼吸综合征病毒%肺泡巨噬细胞%生物学特性%分析
豬繁殖與呼吸綜閤徵病毒%肺泡巨噬細胞%生物學特性%分析
저번식여호흡종합정병독%폐포거서세포%생물학특성%분석
Porcine reproductive and respiratory syndrome virus(PRRSV)%porcine alveolar macrophages(PAM)%biological property%analysis
为了解猪繁殖与呼吸综合征病毒(Porcine reproductive and respiratory syndrome vires,PRRSV)强、弱毒株在PAM细胞上的增殖特性,本研究在体外分离培养了健康猪肺泡巨噬细胞(porcine alveolar macrophages,PAM),然后分别用高致病性PRRSV强毒HuN4株和弱毒疫苗HuN4-F112株感染PAM细胞,细胞病变观察和间接免疫荧光检测结果显示,二者在体外均可以感染PAM细胞,其中强毒HuN4株感染PAM细胞CPE较为明显。在两个毒株感染PAM细胞后12、24、36、48、60h分别收获病毒感染的细胞,利用抗PRRSVN蛋白单抗进行Western blot分析检测病毒核蛋白在不同时间表达量的变化,结果表明,强毒株在感染PAM细胞的早期,N蛋白合成表达量明显高于弱毒疫苗株,而弱毒疫苗株在感染Macr-145细胞早期。N蛋白的合成量则明显优于强毒株。比较HuN4株与HuN4-F112株在PAM细胞和Marc-145细胞的生长曲线,结果显示强、弱毒在PAM细胞和Marc-145细胞生长趋势存在明显差异,其中强毒HuN4株在PAM细胞上增殖能力明显强于弱毒株,而弱毒HuN4-F112株在Marc-145细胞上的增殖能力明显强于其在PAM细胞上的增殖能力,表明PRRSV强毒株对靶细胞PAM的感染能力较强,弱毒疫苗株对其感染能力相对较弱。本研究为深入了解PRRSV强毒株与弱毒疫苗株的致病性差异提供了理论依据。
為瞭解豬繁殖與呼吸綜閤徵病毒(Porcine reproductive and respiratory syndrome vires,PRRSV)彊、弱毒株在PAM細胞上的增殖特性,本研究在體外分離培養瞭健康豬肺泡巨噬細胞(porcine alveolar macrophages,PAM),然後分彆用高緻病性PRRSV彊毒HuN4株和弱毒疫苗HuN4-F112株感染PAM細胞,細胞病變觀察和間接免疫熒光檢測結果顯示,二者在體外均可以感染PAM細胞,其中彊毒HuN4株感染PAM細胞CPE較為明顯。在兩箇毒株感染PAM細胞後12、24、36、48、60h分彆收穫病毒感染的細胞,利用抗PRRSVN蛋白單抗進行Western blot分析檢測病毒覈蛋白在不同時間錶達量的變化,結果錶明,彊毒株在感染PAM細胞的早期,N蛋白閤成錶達量明顯高于弱毒疫苗株,而弱毒疫苗株在感染Macr-145細胞早期。N蛋白的閤成量則明顯優于彊毒株。比較HuN4株與HuN4-F112株在PAM細胞和Marc-145細胞的生長麯線,結果顯示彊、弱毒在PAM細胞和Marc-145細胞生長趨勢存在明顯差異,其中彊毒HuN4株在PAM細胞上增殖能力明顯彊于弱毒株,而弱毒HuN4-F112株在Marc-145細胞上的增殖能力明顯彊于其在PAM細胞上的增殖能力,錶明PRRSV彊毒株對靶細胞PAM的感染能力較彊,弱毒疫苗株對其感染能力相對較弱。本研究為深入瞭解PRRSV彊毒株與弱毒疫苗株的緻病性差異提供瞭理論依據。
위료해저번식여호흡종합정병독(Porcine reproductive and respiratory syndrome vires,PRRSV)강、약독주재PAM세포상적증식특성,본연구재체외분리배양료건강저폐포거서세포(porcine alveolar macrophages,PAM),연후분별용고치병성PRRSV강독HuN4주화약독역묘HuN4-F112주감염PAM세포,세포병변관찰화간접면역형광검측결과현시,이자재체외균가이감염PAM세포,기중강독HuN4주감염PAM세포CPE교위명현。재량개독주감염PAM세포후12、24、36、48、60h분별수획병독감염적세포,이용항PRRSVN단백단항진행Western blot분석검측병독핵단백재불동시간표체량적변화,결과표명,강독주재감염PAM세포적조기,N단백합성표체량명현고우약독역묘주,이약독역묘주재감염Macr-145세포조기。N단백적합성량칙명현우우강독주。비교HuN4주여HuN4-F112주재PAM세포화Marc-145세포적생장곡선,결과현시강、약독재PAM세포화Marc-145세포생장추세존재명현차이,기중강독HuN4주재PAM세포상증식능력명현강우약독주,이약독HuN4-F112주재Marc-145세포상적증식능력명현강우기재PAM세포상적증식능력,표명PRRSV강독주대파세포PAM적감염능력교강,약독역묘주대기감염능력상대교약。본연구위심입료해PRRSV강독주여약독역묘주적치병성차이제공료이론의거。
Abstract: To better understand the growth properties of high/low-virulent Porcine reproductive and respiratory syndrome viruses (PRRSVs), highly virulent strain HuN4 and attenuated vaccine strain HuN4-F112 were used to infect primary porcine alveolar macrophages (PAMs). The cytopathic effect (CPE) in HuN4 infected PAMs was more severe than in HuN4-F112 infected PAMs although both strains were able to infect PAMs as determined by the formation of CPE and immunofluorescence assay. The viruses were harvested at 12, 24, 36, 48 and 60 hours post infection in PAMs and then the amounts of N protein were examined in Western blot. The results showed that the early expression of N protein was significantly higher in highly virulent HuN4 strain than attenuated HuN4-F 112 strain. However, similar experiment in Marc-145 cells yielded opposite conclusion. These results suggested that the cell tropism and replication ability of PRRSV have changed during repeated passages in continuous cell line Marc-145. The present study provided useful informationfor further investigation into the relationship between the virulence and growth properties of highly virulent and attenuated PRRSV strains.