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Bone marrow stem cells accelerate lung maturation and prevent the LPS-induced delay of morphological and functional fetal lung development in the presence of ErbB4
Cell and Tissue Research ( IF 3.2 ) Pub Date : 2020-02-13 , DOI: 10.1007/s00441-019-03145-0
Andreas Schmiedl , Kyra Bokel , Verena Huhn , Lavinia Ionescu , Katja Zscheppang , Christiane E.L. Dammann

ErbB4 is a regulator in lung development and disease. Prenatal infection is an important risk factor for the delay of morphologic lung development, while promoting the maturation of the surfactant system. Bone marrow–derived mesenchymal stem cells (BMSCs) have the potential to prevent lung injury. We hypothesized that BMSCs in comparison with hematopoietic control stem cells (HPSCs) minimize the lipopolysaccharide (LPS)-induced lung injury only when functional ErbB4 receptor is present. We injected LPS and/or murine green fluorescent protein–labeled BMSCs or HPSCs into the amniotic cavity of transgenic ErbB4 heart mothers at gestational day 17. Fetal lungs were analyzed 24 h later. BMSCs minimized significantly LPS-induced delay in morphological lung maturation consisting of a stereologically measured increase in mesenchyme and septal thickness and a decrease of future airspace and septal surface. This effect was more prominent and significant in the ErbB4 heart+/− lungs, suggesting that the presence of functioning ErbB4 signaling is required. BMSC also diminished the LPS induced increase in surfactant protein ( Sftp )a mRNA and decrease in Sftpc mRNA is only seen if ErbB4 is present. The reduction of morphological delay of lung development and of levels of immune-modulating Sftp was more pronounced in the presence of the ErbB4 receptor. Thus, ErbB4 may be required for the protective signaling of BMSCs.

中文翻译:

骨髓干细胞在 ErbB4 存在下加速肺成熟并防止 LPS 诱导的形态学和功能性胎儿肺发育延迟

ErbB4 是肺发育和疾病的调节剂。产前感染是肺形态发育延迟的重要危险因素,同时促进表面活性剂系统的成熟。骨髓间充质干细胞 (BMSCs) 具有预防肺损伤的潜力。我们假设 BMSCs 与造血控制干细胞 (HPSCs) 相比,仅当存在功能性 ErbB4 受体时,才能最大限度地减少脂多糖 (LPS) 诱导的肺损伤。我们在妊娠第 17 天将 LPS 和/或鼠绿色荧光蛋白标记的 BMSC 或 HPSC 注射到转基因 ErbB4 心脏母亲的羊膜腔中。24 小时后分析胎儿肺。BMSCs 显着减少了 LPS 诱导的肺形态成熟延迟,包括间充质和间隔厚度的体视测量增加以及未来空间和间隔表面的减少。这种效应在 ErbB4 心脏 +/- 肺中更为突出和显着,表明需要存在功能性 ErbB4 信号传导。BMSC 还减少了 LPS 诱导的表面活性蛋白 (Sftp)a mRNA 的增加,并且 Sftpc mRNA 的减少仅在存在 ErbB4 时可见。在存在 ErbB4 受体的情况下,肺发育的形态学延迟和免疫调节 Sftp 水平的降低更为明显。因此,BMSC 的保护性信号传导可能需要 ErbB4。这种效应在 ErbB4 心脏 +/- 肺中更为突出和显着,表明需要存在功能性 ErbB4 信号传导。BMSC 还减少了 LPS 诱导的表面活性蛋白 (Sftp)a mRNA 的增加,并且只有在存在 ErbB4 时才能看到 Sftpc mRNA 的减少。在存在 ErbB4 受体的情况下,肺发育的形态学延迟和免疫调节 Sftp 水平的降低更为明显。因此,BMSC 的保护性信号传导可能需要 ErbB4。这种效应在 ErbB4 心脏 +/- 肺中更为突出和显着,表明需要存在功能性 ErbB4 信号传导。BMSC 还减少了 LPS 诱导的表面活性蛋白 (Sftp)a mRNA 的增加,并且只有在存在 ErbB4 时才能看到 Sftpc mRNA 的减少。在存在 ErbB4 受体的情况下,肺发育的形态学延迟和免疫调节 Sftp 水平的降低更为明显。因此,BMSC 的保护性信号传导可能需要 ErbB4。在存在 ErbB4 受体的情况下,肺发育的形态学延迟和免疫调节 Sftp 水平的降低更为明显。因此,BMSC 的保护性信号传导可能需要 ErbB4。在存在 ErbB4 受体的情况下,肺发育的形态学延迟和免疫调节 Sftp 水平的降低更为明显。因此,BMSC 的保护性信号传导可能需要 ErbB4。
更新日期:2020-02-13
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