中华微生物学和免疫学杂志
中華微生物學和免疫學雜誌
중화미생물학화면역학잡지
CHINESE JOURNAL OF MICROBIOLOGY AND IMMUNOLOGY
2014年
10期
793-797
,共5页
张海萍%闫惠平%孙丽梅%马胤雪%王熠%张欣
張海萍%閆惠平%孫麗梅%馬胤雪%王熠%張訢
장해평%염혜평%손려매%마윤설%왕습%장흔
急性HIV-1感染%Bw4表位簇%T细胞%病毒调定点
急性HIV-1感染%Bw4錶位簇%T細胞%病毒調定點
급성HIV-1감염%Bw4표위족%T세포%병독조정점
Acute HIV-1 infection%Bw4 motif%T cells%Viral set point
目的:研究人白细胞抗原HLA-B携带Bw4是否对急性HIV-1感染者Gag-特异的T细胞应答产生影响。方法用HIV-1 CRF01_A/E Gag多肽刺激36例HIV-1感染者在急性感染6个月时的外周血单个核细胞( PBMCs),并用ELISPOT技术检测HIV-1特异性T细胞应答。用序列特异性引物-聚合酶链反应( SSP-PCR)技术检测HIV-1感染者HLA分型及HLA-B携带Bw4、Bw6的分型。结果(1)在36例急性HIV-1感染者中,18例HLA-B不携带Bw4的感染者病毒调定点是4.49±0.56,18例HLA-B携带Bw4的感染者病毒调定点是3.78±0.75,前者的病毒调定点高于后者( P=0.005)。(2)HLA-B不携带Bw4的急性HIV-1感染者中15例可对P24肽库产生应答,而HLA-B携带Bw4的急性HIV-1感染者只有11例可对P24肽库产生应答,但差异无统计学意义。 HLA-B不携带Bw4的急性HIV-1感染者P24-特异的T细胞应答强度是(1317.8±1238.0) SFC/106 PBMCs,强于HLA-B携带 Bw4的急性 HIV-1感染者 P24-特异的 T 细胞应答强度[(549.9±778.5) SFC/106 PBMCs],差异有统计学意义(P=0.032)。然而两组感染者诱导产生的P17、P15特异性T细胞应答强度相当。 HLA-B不携带Bw4的急性HIV-1感染者对28条P24单肽的应答宽度是2(0~5)条,大于HLA-B携带Bw4的急性HIV-1感染者,其应答宽度是1(0~4)条( P=0.080)。(3) HLA-B不携带Bw4的急性HIV-1感染者病毒载量与P24特异的T细胞应答强度呈负相关(rs=-0.482,P=0.043),且与P24单肽的应答宽度呈负相关(rs=-0.496,P=0.036)。然而HLA-B携带Bw4的急性HIV-1感染者P24特异的T细胞应答强度与病毒载量、CD4细胞计数均无关,而且P24单肽的应答宽度与病毒载量无关。结论与HLA-B不携带Bw4的急性HIV-1感染者比较,尽管HLA-B携带Bw4的急性HIV-1感染者病毒调定点低,但其产生的P24-特异性T细胞应答强度弱且对P24单肽的应答宽度窄。
目的:研究人白細胞抗原HLA-B攜帶Bw4是否對急性HIV-1感染者Gag-特異的T細胞應答產生影響。方法用HIV-1 CRF01_A/E Gag多肽刺激36例HIV-1感染者在急性感染6箇月時的外週血單箇覈細胞( PBMCs),併用ELISPOT技術檢測HIV-1特異性T細胞應答。用序列特異性引物-聚閤酶鏈反應( SSP-PCR)技術檢測HIV-1感染者HLA分型及HLA-B攜帶Bw4、Bw6的分型。結果(1)在36例急性HIV-1感染者中,18例HLA-B不攜帶Bw4的感染者病毒調定點是4.49±0.56,18例HLA-B攜帶Bw4的感染者病毒調定點是3.78±0.75,前者的病毒調定點高于後者( P=0.005)。(2)HLA-B不攜帶Bw4的急性HIV-1感染者中15例可對P24肽庫產生應答,而HLA-B攜帶Bw4的急性HIV-1感染者隻有11例可對P24肽庫產生應答,但差異無統計學意義。 HLA-B不攜帶Bw4的急性HIV-1感染者P24-特異的T細胞應答彊度是(1317.8±1238.0) SFC/106 PBMCs,彊于HLA-B攜帶 Bw4的急性 HIV-1感染者 P24-特異的 T 細胞應答彊度[(549.9±778.5) SFC/106 PBMCs],差異有統計學意義(P=0.032)。然而兩組感染者誘導產生的P17、P15特異性T細胞應答彊度相噹。 HLA-B不攜帶Bw4的急性HIV-1感染者對28條P24單肽的應答寬度是2(0~5)條,大于HLA-B攜帶Bw4的急性HIV-1感染者,其應答寬度是1(0~4)條( P=0.080)。(3) HLA-B不攜帶Bw4的急性HIV-1感染者病毒載量與P24特異的T細胞應答彊度呈負相關(rs=-0.482,P=0.043),且與P24單肽的應答寬度呈負相關(rs=-0.496,P=0.036)。然而HLA-B攜帶Bw4的急性HIV-1感染者P24特異的T細胞應答彊度與病毒載量、CD4細胞計數均無關,而且P24單肽的應答寬度與病毒載量無關。結論與HLA-B不攜帶Bw4的急性HIV-1感染者比較,儘管HLA-B攜帶Bw4的急性HIV-1感染者病毒調定點低,但其產生的P24-特異性T細胞應答彊度弱且對P24單肽的應答寬度窄。
목적:연구인백세포항원HLA-B휴대Bw4시부대급성HIV-1감염자Gag-특이적T세포응답산생영향。방법용HIV-1 CRF01_A/E Gag다태자격36례HIV-1감염자재급성감염6개월시적외주혈단개핵세포( PBMCs),병용ELISPOT기술검측HIV-1특이성T세포응답。용서렬특이성인물-취합매련반응( SSP-PCR)기술검측HIV-1감염자HLA분형급HLA-B휴대Bw4、Bw6적분형。결과(1)재36례급성HIV-1감염자중,18례HLA-B불휴대Bw4적감염자병독조정점시4.49±0.56,18례HLA-B휴대Bw4적감염자병독조정점시3.78±0.75,전자적병독조정점고우후자( P=0.005)。(2)HLA-B불휴대Bw4적급성HIV-1감염자중15례가대P24태고산생응답,이HLA-B휴대Bw4적급성HIV-1감염자지유11례가대P24태고산생응답,단차이무통계학의의。 HLA-B불휴대Bw4적급성HIV-1감염자P24-특이적T세포응답강도시(1317.8±1238.0) SFC/106 PBMCs,강우HLA-B휴대 Bw4적급성 HIV-1감염자 P24-특이적 T 세포응답강도[(549.9±778.5) SFC/106 PBMCs],차이유통계학의의(P=0.032)。연이량조감염자유도산생적P17、P15특이성T세포응답강도상당。 HLA-B불휴대Bw4적급성HIV-1감염자대28조P24단태적응답관도시2(0~5)조,대우HLA-B휴대Bw4적급성HIV-1감염자,기응답관도시1(0~4)조( P=0.080)。(3) HLA-B불휴대Bw4적급성HIV-1감염자병독재량여P24특이적T세포응답강도정부상관(rs=-0.482,P=0.043),차여P24단태적응답관도정부상관(rs=-0.496,P=0.036)。연이HLA-B휴대Bw4적급성HIV-1감염자P24특이적T세포응답강도여병독재량、CD4세포계수균무관,이차P24단태적응답관도여병독재량무관。결론여HLA-B불휴대Bw4적급성HIV-1감염자비교,진관HLA-B휴대Bw4적급성HIV-1감염자병독조정점저,단기산생적P24-특이성T세포응답강도약차대P24단태적응답관도착。
Objective To investigate whether Bw4 motif expressed on HLA-B affects Gag-specific T cell responses in patients with acute HIV-1 infection.Methods Sequence specific primer polymerase chain reaction ( SSP-PCR) was performed for human leukocyte antigen ( HLA) typing.Peripheral blood mononuclear cells ( PBMCs) from 36 patients with six months of acute HIV-1 infection were stimulated with HIV-1 CRF01_A/E Gag peptides to detect the HIV-1 specific T cell responses by using ELISPOT assay. Results (1) The set point viral load of 18 patients carrying no Bw4 motif on HLA-B was 4.49±0.56 which was higher than that in other 18 patients carrying 1-2 Bw4 motif(s) on HLA-B (3.78±0.75) (P=0.005). (2) T cells from 26 out of 36 patients with acute HIV-1 infection responded to P24 peptides pool including 15 patients carrying no Bw4 motif on HLA-B and 11 patients carrying 1-2 Bw4 motif( s) on HLA-B, but no significant difference was observed between them (P>0.05).The magnitude of P24-specific T cell responses induced in patients carrying no Bw4 motif on HLA-B was (1317.8 ±1238.0) SFC/106 PBMCs which was greater than that induced in patients carrying 1-2 Bw4 motif(s) on HLA-B [(549.9±778.5) SFC/106 PBMCs] ( P=0.032) .The breadth of T cell responses to P24 peptides was 2(0-5) in patients carrying no Bw4 motif on HLA-B which was broader than that of patients carrying 1-2 Bw4 motif(s) on HLA-B [1(0-4)] (P=0.080).(3) The viral loads of HIV-1 infected patients carrying no Bw4 motif on HLA-B were negatively correlated with the magnitude of P24-specific T cell responses (rs=-0.482, P=0.043) and the breadth of responses to P24 peptides (rs=-0.496, P=0.036).No correlations were observed between viral loads and the magnitude or breadth of P24-specific T cell responses in HIV-1 infected patients carrying 1-2 Bw4 motif(s) on HLA-B.Conclusion Compared with HIV-1 infected patients carrying no Bw4 motif on HLA-B, the patients carrying 1-2 Bw4 motif( s) on HLA-B showed lower levels of set point viral load, weak-ened magnitude of P24-specific T cell responses and narrowed breadth of responses to P24 peptides.