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Cross‐matching of allogeneic mesenchymal stromal cells eliminates recipient immune targeting
STEM CELLS Translational Medicine ( IF 5.4 ) Pub Date : 2020-12-25 , DOI: 10.1002/sctm.20-0435
Aileen L Rowland 1 , Donald Miller 2 , Alix Berglund 3 , Lauren V Schnabel 3 , Gwendolyn J Levine 4 , Douglas F Antczak 2 , Ashlee E Watts 1
Affiliation  

Allogeneic mesenchymal stromal cells (MSCs) have been used clinically for decades, without cross‐matching, on the assumption that they are immune‐privileged. In the equine model, we demonstrate innate and adaptive immune responses after repeated intra‐articular injection with major histocompatibility complex (MHC) mismatched allogeneic MSCs, but not MHC matched allogeneic or autologous MSCs. We document increased peri‐articular edema and synovial effusion, increased synovial cytokine and chemokine concentrations, and development of donor‐specific antibodies in mismatched recipients compared with recipients receiving matched allogeneic or autologous MSCs. Importantly, in matched allogeneic and autologous recipients, but not mismatched allogeneic recipients, there was increased stromal derived factor‐1 along with increased MSC concentrations in synovial fluid. Until immune recognition of MSCs can be avoided, repeated clinical use of MSCs should be limited to autologous or cross‐matched allogeneic MSCs. When non–cross‐matched allogeneic MSCs are used in single MSC dose applications, presensitization against donor MHC should be assessed.

中文翻译:

同种异体间充质基质细胞的交叉匹配消除了受体免疫靶向

同种异体间充质基质细胞(MSCs)已经在临床上使用了几十年,没有交叉匹配,假设它们是免疫特权的。在马模型中,我们展示了在重复关节内注射主要组织相容性复合物 (MHC) 不匹配的同种异体 MSC 而不是 MHC 匹配的同种异体或自体 MSC 后的先天性和适应性免疫反应。我们记录了与接受匹配的同种异体或自体 MSCs 的受者相比,在不匹配的受者中关节周围水肿和滑膜积液增加,滑膜细胞因子和趋化因子浓度增加,以及供体特异性抗体的产生。重要的是,在匹配的同种异体和自体受者中,但不是不匹配的同种异体受者中,随着滑液中MSC浓度的增加,基质衍生因子-1增加。在可以避免 MSCs 的免疫识别之前,MSCs 的重复临床使用应仅限于自体或交叉匹配的异基因 MSCs。当非交叉匹配的同种异体 MSC 用于单剂量 MSC 应用时,应评估对供体 MHC 的预敏化。
更新日期:2020-12-25
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