图1所示。ephoss对csc相关细胞表面标志物水平和干细胞相关基因表达的影响。(A)实验设计示意图。阶段1 (PT,原发肿瘤)包括在缺氧和环境空气下处理肿瘤,流式细胞术表征细胞,细胞繁殖,并将细胞重新植入雌性FVB/N小鼠。第2阶段(PL,原系)涉及流式细胞术对第1阶段培养的细胞进行表征。第3阶段(TT,移植肿瘤)涉及从第1阶段的细胞植入中获得的肿瘤的再表征。第4期(TL,移植系)涉及从第3期肿瘤生长的细胞的流式细胞术表征。PT,原发肿瘤;PL, Primary Line;TT,移植瘤; TL, Transplanted Line. (B) Representative flow cytometry profile of tumor cells stained for antibodies against LGR5 and TSPAN8. Antibodies against lineage markers CD31-PE (phycoerythrin)/Cy7, CD45-PE/Cy7, and CD140a-PE/Cy7 were used to label endothelial cells, hematopoietic cells, and fibroblasts, respectively, and only lineage-negative cells were included in the analysis. (C) Quantitation of LGR5+ cells. Differences in LGR5+ cells between ambient air and physioxia are significant [n = 3 to 6, one-way analysis of variance (ANOVA)]. (D) CD61/TSPAN8 staining patterns of tumor cells (n = 3 to 6, one-way ANOVA). (E) Quantitation of TSPAN8+ cells. (F) Quantitation of CD61+ cells. (G) Tumor cells collected and processed at physioxia express higher levels of stemness-associated genes compared to ambient air (n = 3, one-way ANOVA, P = 0.0004). *P < 0.05, **P < 0.01, and ***P < 0.001 by ANOVA. ns, not significant. Credit: DOI: 10.1126/sciadv.abh3375
“这篇论文完全改变了我们需要收集的方式肿瘤组织然后测试药物敏感性该论文的资深作者Harikrishna Nakshatri博士说。Nakshatri是Marian J. Morrison教授乳腺癌研究她是印第安纳大学梅尔文和布伦西蒙综合癌症中心维拉·布拉德利基金会乳腺癌研究中心的研究人员。哈尔·布罗克斯迈耶博士是印第安纳大学医学院的杰出教授,于2021年12月去世,他也为这项研究做出了贡献。