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一種P2X1單克隆流式細胞儀檢測抗體的制備及其應用的制作方法

文檔(dang)序號:39427192發布日(ri)期:2024-09-20 22:25閱讀:來源(yuan):國(guo)知局

技術特征:

1.一種p2x1單(dan)克隆流式細(xi)胞儀檢測抗體的制備方法(fa),其特征(zheng)在(zai)于包括以(yi)下步驟(zou):

2.如權利要求1所述的一(yi)種p2x1單(dan)克(ke)隆(long)流式細胞儀(yi)檢測抗(kang)體的制備(bei)方法,其特(te)征在于步(bu)驟(zou)2)的具體操(cao)作過程如下:

3.如(ru)權利要求2所述的(de)(de)(de)(de)一種(zhong)p2x1單克(ke)隆(long)流式細胞(bao)儀檢測抗(kang)體(ti)的(de)(de)(de)(de)制(zhi)備方法,其特征在于(yu)(yu)步(bu)驟(zou)s2中(zhong),所述天然(ran)空間結(jie)(jie)構和活(huo)性(xing)的(de)(de)(de)(de)人源(yuan)p2x1蛋白的(de)(de)(de)(de)制(zhi)備方法如(ru)下:擴增收集(ji)(ji)高(gao)表達帶小鼠igg?fc段(duan)純化(hua)標簽的(de)(de)(de)(de)人源(yuan)p2x1蛋白的(de)(de)(de)(de)hp2x1mfc.copgfp/293穩(wen)轉(zhuan)細胞(bao),于(yu)(yu)tris鹽酸緩沖液(ye)(ye)(ye)(ye)(ye)中(zhong)冰浴勻漿破碎,離心(xin),去上清,稱取膜(mo)(mo)碎片沉(chen)淀濕重,共(gong)收集(ji)(ji)膜(mo)(mo)碎片沉(chen)淀濕重不低(di)于(yu)(yu)100克(ke);加入tris鹽酸緩沖液(ye)(ye)(ye)(ye)(ye)制(zhi)備成膜(mo)(mo)懸液(ye)(ye)(ye)(ye)(ye),在膜(mo)(mo)懸液(ye)(ye)(ye)(ye)(ye)中(zhong),按5%(w/v)加入苯乙(yi)烯(xi)-馬(ma)來酸共(gong)聚(ju)物(wu)凍干粉,混合均(jun)勻;振蕩離心(xin),收集(ji)(ji)上清液(ye)(ye)(ye)(ye)(ye)并過(guo)0.45μm濾膜(mo)(mo),過(guo)膜(mo)(mo)后的(de)(de)(de)(de)濾液(ye)(ye)(ye)(ye)(ye)過(guo)protein?a柱,用(yong)pbs緩沖液(ye)(ye)(ye)(ye)(ye)洗(xi)柱之后,用(yong)2倍(bei)柱體(ti)積(ji)的(de)(de)(de)(de)ek酶(mei)切緩沖液(ye)(ye)(ye)(ye)(ye)進行柱平衡,最后加入等(deng)柱體(ti)積(ji)的(de)(de)(de)(de)ek酶(mei)切緩沖液(ye)(ye)(ye)(ye)(ye),用(yong)ek酶(mei)室(shi)溫震蕩酶(mei)切12h;隨后通過(guo)重力流穿(chuan)柱,收集(ji)(ji)流穿(chuan)液(ye)(ye)(ye)(ye)(ye),用(yong)10kd的(de)(de)(de)(de)超濾管(guan)置換為pbs緩沖液(ye)(ye)(ye)(ye)(ye),并濃(nong)縮100倍(bei),獲得(de)可(ke)溶性(xing)的(de)(de)(de)(de)由苯乙(yi)烯(xi)-馬(ma)來酸環扣的(de)(de)(de)(de)仍在膜(mo)(mo)脂質雙分子(zi)層上的(de)(de)(de)(de)具有天然(ran)空間結(jie)(jie)構和活(huo)性(xing)的(de)(de)(de)(de)人源(yuan)p2x1蛋白納米(mi)顆粒。

4.一種采用(yong)(yong)如權利(li)要求(qiu)1所述的(de)(de)(de)(de)制備(bei)方(fang)法制備(bei)得到的(de)(de)(de)(de)p2x1單(dan)克隆流(liu)式細(xi)(xi)(xi)胞(bao)(bao)(bao)(bao)儀檢測(ce)抗體的(de)(de)(de)(de)應(ying)(ying)(ying)用(yong)(yong),其特(te)征(zheng)在于p2x1是一種配體門(men)控離(li)(li)子通道,細(xi)(xi)(xi)胞(bao)(bao)(bao)(bao)膜表(biao)面p2x1表(biao)達(da)的(de)(de)(de)(de)高低會(hui)直接(jie)影(ying)響細(xi)(xi)(xi)胞(bao)(bao)(bao)(bao)內胞(bao)(bao)(bao)(bao)液(ye)游離(li)(li)鈣(gai)離(li)(li)子濃度,而細(xi)(xi)(xi)胞(bao)(bao)(bao)(bao)對(dui)胞(bao)(bao)(bao)(bao)液(ye)游離(li)(li)鈣(gai)離(li)(li)子濃度的(de)(de)(de)(de)變化(hua)是非常敏感的(de)(de)(de)(de),通過鈣(gai)調蛋(dan)白cam的(de)(de)(de)(de)作(zuo)用(yong)(yong)具(ju)有(you)廣泛的(de)(de)(de)(de)細(xi)(xi)(xi)胞(bao)(bao)(bao)(bao)生(sheng)理功(gong)能;所述p2x1單(dan)克隆流(liu)式細(xi)(xi)(xi)胞(bao)(bao)(bao)(bao)儀檢測(ce)抗體,通過流(liu)式細(xi)(xi)(xi)胞(bao)(bao)(bao)(bao)儀檢測(ce)細(xi)(xi)(xi)胞(bao)(bao)(bao)(bao)膜表(biao)面p2x1表(biao)達(da)水(shui)平進而應(ying)(ying)(ying)用(yong)(yong)于基于p2x1表(biao)達(da)的(de)(de)(de)(de)細(xi)(xi)(xi)胞(bao)(bao)(bao)(bao)功(gong)能的(de)(de)(de)(de)分(fen)(fen)析(xi)(xi)(xi)應(ying)(ying)(ying)用(yong)(yong),所述分(fen)(fen)析(xi)(xi)(xi)應(ying)(ying)(ying)用(yong)(yong)包(bao)括中性粒(li)細(xi)(xi)(xi)胞(bao)(bao)(bao)(bao)趨化(hua)功(gong)能、血(xue)小板凝集功(gong)能、細(xi)(xi)(xi)胞(bao)(bao)(bao)(bao)周期、細(xi)(xi)(xi)胞(bao)(bao)(bao)(bao)凋亡、細(xi)(xi)(xi)胞(bao)(bao)(bao)(bao)分(fen)(fen)化(hua)或腫瘤細(xi)(xi)(xi)胞(bao)(bao)(bao)(bao)活性的(de)(de)(de)(de)流(liu)式細(xi)(xi)(xi)胞(bao)(bao)(bao)(bao)儀檢測(ce)分(fen)(fen)析(xi)(xi)(xi)應(ying)(ying)(ying)用(yong)(yong)。

5.如權利要求4所(suo)述的(de)p2x1單(dan)克(ke)隆(long)(long)流式(shi)(shi)細(xi)(xi)胞(bao)(bao)儀檢(jian)測抗(kang)體(ti)的(de)應用(yong),其特征(zheng)在于所(suo)述p2x1單(dan)克(ke)隆(long)(long)流式(shi)(shi)細(xi)(xi)胞(bao)(bao)儀檢(jian)測抗(kang)體(ti)記(ji)為fcm001抗(kang)體(ti),fcm001抗(kang)體(ti)通(tong)(tong)過(guo)流式(shi)(shi)細(xi)(xi)胞(bao)(bao)儀檢(jian)測中(zhong)(zhong)(zhong)性(xing)(xing)粒(li)細(xi)(xi)胞(bao)(bao)膜(mo)表(biao)(biao)面p2x1表(biao)(biao)達(da)水(shui)(shui)平(ping)(ping),進而反(fan)映(ying)中(zhong)(zhong)(zhong)性(xing)(xing)粒(li)細(xi)(xi)胞(bao)(bao)的(de)趨化(hua)(hua)(hua)功(gong)(gong)能(neng)(neng);取健(jian)康人群(qun)和不同程(cheng)度細(xi)(xi)菌感染的(de)肺炎患(huan)者的(de)外周血,用(yong)中(zhong)(zhong)(zhong)性(xing)(xing)粒(li)細(xi)(xi)胞(bao)(bao)分離試劑盒提(ti)純中(zhong)(zhong)(zhong)性(xing)(xing)粒(li)細(xi)(xi)胞(bao)(bao)后,用(yong)fcm001抗(kang)體(ti)流式(shi)(shi)細(xi)(xi)胞(bao)(bao)儀檢(jian)測各組細(xi)(xi)胞(bao)(bao)p2x1的(de)表(biao)(biao)達(da)情況,通(tong)(tong)過(guo)趨化(hua)(hua)(hua)距離cd和趨化(hua)(hua)(hua)綜合評分cfs來評測p2x1表(biao)(biao)達(da)水(shui)(shui)平(ping)(ping);分析中(zhong)(zhong)(zhong)性(xing)(xing)粒(li)細(xi)(xi)胞(bao)(bao)膜(mo)表(biao)(biao)面p2x1的(de)表(biao)(biao)達(da)水(shui)(shui)平(ping)(ping)與(yu)中(zhong)(zhong)(zhong)性(xing)(xing)粒(li)細(xi)(xi)胞(bao)(bao)趨化(hua)(hua)(hua)功(gong)(gong)能(neng)(neng)的(de)相關性(xing)(xing),證明p2x1表(biao)(biao)達(da)越高,中(zhong)(zhong)(zhong)性(xing)(xing)粒(li)細(xi)(xi)胞(bao)(bao)趨化(hua)(hua)(hua)功(gong)(gong)能(neng)(neng)就越差(cha),反(fan)之,則(ze)中(zhong)(zhong)(zhong)性(xing)(xing)粒(li)細(xi)(xi)胞(bao)(bao)趨化(hua)(hua)(hua)功(gong)(gong)能(neng)(neng)就越好。


技術總結
本發明涉及生物醫學技術領域,尤其涉及一種P2X1單克隆流式細胞儀檢測抗體的制備及其應用。本發明定點設計人P2X1胞外特定表位基因序列,用真核細胞為宿主高表達制備P2X1蛋白片段做為抗原免疫小鼠;應用雜交瘤單克隆抗體制備技術,以具有天然空間結構的全長人源P2X1蛋白作為包被抗原,ELISA法篩選制備獲得一個高效價P2X1單克隆抗體;經FITC標記后與市售流式抗體進行中性粒細胞的檢測比較,證明其特異性和靈敏度均優于市售抗體;應用本發明獲得的P2X1抗體對健康人群和細菌感染肺炎患者外周血中性粒細胞進行流式分析,檢測出患者中性粒細胞表面P2X1表達水平高于健康人,達極其顯著差異,p<0.0001。

技術研發人員:周旭一,范春雷,孫辰晛,王超
受保護的技術使用者:杭州玖格生物醫藥科技有限公司
技術研發日:
技術公布日:2024/9/19
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