SARS-CoV-2感染BO-ALI实验。1例BO-ALI感染SARS-CoV-2 (1.3 × 105TCID50/well),用分化培养基培养2 d。b未感染BO-ALI中KRT5(红色)和乙酰化α-微管蛋白(绿色)的免疫荧光分析。核用DAPI反染色(蓝色)。c未感染BO-ALI中ACE2(绿色)和乙酰化α-微管蛋白(红色)的免疫荧光分析。核用DAPI反染色(蓝色)。d采用TCID50法测定感染BO或BO- ali上清液中感染性病毒的数量。采用单因素方差分析,Tukey事后检验,比较差异有统计学意义(*P < 0.05)。数据代表三个独立实验的平均值±标准差。e未感染BO-ALI感染后2天SARS-CoV-2 Spike蛋白(SP)(绿色)和乙酰化α-微管蛋白(红色)的免疫荧光分析。未感染BO-ALI中SARS-CoV-2 SP(绿色)和KRT5(红色)的免疫荧光分析 Nuclei were counterstained with DAPI (blue) 2 days after the infection. f Immunofluorescence analysis of SARS-CoV-2 SP (green) and acetylated α-tubulin (red) in infected BO-ALI 7 days after the infection. Immunofluorescence analysis of SARS-CoV-2 SP (green) and KRT5 (red) in infected BO-ALI 7 days after the infection. Nuclei were counterstained with DAPI (blue). g Immunofluorescence analysis of KRT5 (red) and acetylated α-tubulin (green) in BO-ALI 15 days after the infection. Nuclei were counterstained with DAPI (blue). Panels b, c, e–g are representative of three independent experiments. Credit:通信生物学(2022)。DOI: 10.1038 / s42003 - 022 - 03499 - 2