用MSD法检测HD患者源性细胞中的突变体HTT增加。说明HD患者为基础的疾病模型的范例(成纤维细胞、iPSC、皮层祖细胞(25d旧)和皮层神经元(35d旧))和读出。由BioRender.com创建。b条形图描述了NESTIN/PAX6双阳性细胞的FACS定量。统计学:韦尔奇检验。柱状图:中位数±IQR。c条形图显示bIII-Tubulin/CTIP2双阳性细胞的FACS定量。统计学:韦尔奇检验。柱状图:中位数±IQR。d皮层神经元的代表性图片。 Scale bar 50 µm. e Illustration depicting the MSD HTT quantification assay, where the added protein samples bind to 2B7 antibody, used for coating the plates. The SULFO-TAG coupled antibodies D7F7 and MW1 are added for quantification of total HTT and mutant HTT, respectively. Note: numeric values from 2B7/D7F7 assay (total HTT) cannot be directly set in relation to numeric values from 2B7/MW1 assay (mutant HTT). Created with BioRender.com. f Bar plots quantifying total (tHTT, top) and mutant (mHTT, bottom) levels in fibroblasts (4 Ctrl lines, 4 HD lines) with 2B7/D7F7 and 2B7/MW1 MSD assays, respectively. Statistics: tHTT: Welch’s test (P value = 0.9717); mHTT Welch’s test (P value = 0.0737). Bars: median ± IQR. g Bar plots quantifying total (tHTT, top) and mutant (mHTT, bottom) levels in iPSC (8 Ctrl lines, 9 HD lines) with 2B7/D7F7 and 2B7/MW1 MSD assays, respectively. Statistics: tHTT: Welch’s test (P value = 0.2080); mHTT Mann–Whitney test (P value < 0.0001). Bars: median ± IQR. h Bar plots quantifying total (tHTT, top) and mutant (mHTT, bottom) levels in cortical progenitors (7 Ctrl lines, 9 HD lines) with 2B7/D7F7 and 2B7/MW1 MSD assays, respectively. Statistics: tHTT: Welch’s test (P value = 0.2149); mHTT Welch’s test (P value = 0.0061). Bars: median ± IQR. i Bar plots quantifying total (tHTT, top) and mutant (mHTT, bottom) levels in cortical neurons (7 Ctrl lines, 8 HD lines) with 2B7/D7F7 and 2B7/MW1 MSD assays, respectively. Statistics: tHTT: Welch’s test (P value = 0.2781); mHTT Welch’s test (P value = 0.0239). Bars: median ± IQR. Credit:自然通讯(2022)。DOI: 10.1038 / s41467 - 022 - 34419 - x