MHC四聚体(MHC Tetramer)是一类用于直接捕获抗原特异性T细胞的免疫学试剂,
由四个MHC-peptide单体组成,具有亲和力高、特异性强等特点。
[1] Christophersen A. Peptide-MHC class I and class II tetramers: From flow to mass
cytometry. HLA. 2020 Mar;95(3):169-178.
[2] Dolton G., Zervoudi E., Rius C. Optimized Peptide-MHC Multimer Protocols for Detection and Isolation
of Autoimmune T-Cells. Front Immunol. 2018 Jun 29;9:1378.
与其他应用于T细胞检测的传统方法相比,如酶联免疫斑点检测(ELISPOT)、胞内细胞因子染色(ICS)等,MHC四聚体分析技术具有以下优势:
MHC Tetramer | Functional analysis (ELISPOT、ICS ect.) |
|
---|---|---|
特异性 | 直接识别抗原肽特异性CD8+T细胞表面TCR, 更直观 | 通过细胞因子释放等功能学检测,间接确认抗原肽特异性CD8+T细胞[1] |
灵敏度 | 通过大量实验证明,四聚体与抗原肽特异性CD8+T细胞的TCR亲和力高,且本底背景低, 具有较高检测灵敏度 | 检测时,仅识别具有分泌特定细胞因子能力的淋巴细胞,但这些淋巴细胞仅是抗原肽特异性CD8+T细胞中的一部分,从而影响了的灵敏度[2] |
检测速度 | 无需抗原肽刺激及扩培,配合流式,3-4h内 完成检测,更高效 | 需抗原肽刺激及扩培,整个实验需2-3天, 且易引入偏歧[3] |
个性化定制 | Helixgen可提供60余种MHC Allele(涵盖人、小鼠、猕猴、大猩猩、小鼠等物种)定制化 服务,满足客户个性化研发需求 | 通过常规细胞因子检测,无法做到个性化 |
[1] Schwarz M., Mzoughi S., Lozano-Ojalvo D. et al., T cell immunity is key to the pandemic
endgame: How to measure and monitor it. Current Research in Immunology 3 (2022) 215-221.
[2] Philippe Bousso P. Generation of MHC-peptide tetramers: a new opportunity for dissecting T-cell
immune responses. Microbes and Infection, 2, 2000, 425−429
[3]Lacey S.F., Diamond D.F. Assessment of Cellular Immunity to Human Cytomegalovirus in Recipients of
Allogeneic Stem Cell Transplants. Biology of Blood and Marrow Transplantation 10:433-447 (2004)
新生抗原/表位肽疫苗
DC疫苗/CTL细胞回输
TCR-T疗法等
新冠病毒/流感病毒
巨细胞病毒/艾滋病毒
EB病毒/结核病等
供体常见病原:
巨细胞病毒
EB病毒/腺病毒等
糖尿病/过敏
类风湿性关节炎等
我们可以针对每位客户提供的多肽序列,通过多肽和MHC分子结合的亲和力分析, 制作定制化的四聚体。如果有感兴趣的MHC型和多肽序列,请联系我们。
Human | Murine | Macaque | Chimpanzee | Swine | ||||
---|---|---|---|---|---|---|---|---|
HLA-A | HLA-B | HLA-C | HLA-E | MICA | ||||
HLA-A*0101 HLA-A*0201 HLA-A*0205 HLA-A*0301 HLA-A*1101 HLA-A*2301 HLA-A*2402 HLA-A*2902 HLA-A*3002 HLA-A*31012 HLA-A*68012 HLA-A*7401 |
HLA-B*0702 HLA-B*0801 HLA-B*1402 (B65) HLA-B*1501 HLA-B*1503 HLA-B*2705 HLA-B*3501 HLA-B*3502 HLA-B*3503 HLA-B*4402 HLA-B*4501 HLA-B*4601 HLA-B*5101 HLA-B*5301 HLA-B*5701 HLA-B*5703 HLA-B*68 |
HLA-C*0304 HLA-C*0701 HLA-C*0802 HLA-C*1203 |
HLA-E*01033 |
MICA 004 MICA 008 |
H2-Db H2-Dd H2-Dk H2-Kb H2-Kd H2-Kk H2-Ld Qa1b Kb.A2 Kb.Ld A2.Dd A2.Kb Mouse HFE |
Mamu-A*01 Mamu-A*02 Mamu-A*08 Mamu-A*11 Mamu-B*01 Mamu-B*03 Mamu-B*04 Mamu-B*12 Mamu-B*17 |
PATR A*0101 PATR A*0401 PATR B*0101 PATR B*0301 PATR B*13 PATR B*2001 PATR B*23 |
SLA-1*0301 (1*wxd) |
Human | ||||
---|---|---|---|---|
HLA-A | HLA-B | HLA-C | HLA-E | MICA |
HLA-A*0101 HLA-A*0201 HLA-A*0205 HLA-A*0301 HLA-A*1101 HLA-A*2301 HLA-A*2402 HLA-A*2902 HLA-A*3002 HLA-A*31012 HLA-A*68012 HLA-A*7401 |
HLA-B*0702 HLA-B*0801 HLA-B*1402 (B65) HLA-B*1501 HLA-B*1503 HLA-B*2705 HLA-B*3501 HLA-B*3502 HLA-B*3503 HLA-B*4402 HLA-B*4501 HLA-B*4601 HLA-B*5101 HLA-B*5301 HLA-B*5701 HLA-B*5703 HLA-B*68 |
HLA-C*0304 HLA-C*0701 HLA-C*0802 HLA-C*1203 |
HLA-E*01033 |
MICA 004 MICA 008 |
Murine | Macaque | Chimpanzee | Swine |
---|---|---|---|
H2-Db H2-Dd H2-Dk H2-Kb H2-Kd H2-Kk H2-Ld Qa1b Kb.A2 Kb.Ld A2.Dd A2.Kb Mouse HFE |
Mamu-A*01 Mamu-A*02 Mamu-A*08 Mamu-A*11 Mamu-B*01 Mamu-B*03 Mamu-B*04 Mamu-B*12 Mamu-B*17 |
PATR A*0101 PATR A*0401 PATR B*0101 PATR B*0301 PATR B*13 PATR B*2001 PATR B*23 |
SLA-1*0301 (1*wxd) |