Tspan8-肿瘤细胞外囊泡诱导的血管内皮细胞和成纤维细胞重构依赖于靶细胞的选择性反应。
Tspan8-Tumor Extracellular Vesicle-Induced Endothelial Cell and Fibroblast Remodeling Relies on the Target Cell-Selective Response.
机构信息
School of Public Health, Shanghai Jiao Tong University School of Medicine, Shanghai 200025, China.
Department of General, Visceral and Transplantation Surgery, Pancreas Section, University of Heidelberg, 69120 Heidelberg, Germany.
出版信息
Cells. 2020 Jan 29;9(2):319. doi: 10.3390/cells9020319.
Tumor cell-derived extracellular vesicles (TEX) expressing tetraspanin Tspan8-alpha4/beta1 support angiogenesis. Tspan8-alpha6/beta4 facilitates lung premetastatic niche establishment. TEX-promoted target reprogramming is still being disputed, we explored rat endothelial cell (EC) and lung fibroblast (Fb) mRNA and miRNA profile changes after coculture with TEX. TEX were derived from non-metastatic BSp73AS (AS) or metastatic BSp73ASML (ASML) rat tumor lines transfected with Tspan8 (AS-Tspan8) or Tspan8-shRNA (ASML-Tspan8kd). mRNA was analyzed by deep sequencing and miRNA by array analysis of EC and Fb before and after coculture with TEX. EC and Fb responded more vigorously to AS-Tspan8- than AS-TEX. Though EC and Fb responses differed, both cell lines predominantly responded to membrane receptor activation with upregulation and activation of signaling molecules and transcription factors. Minor TEX-initiated changes in the miRNA profile relied, at least partly, on long noncoding RNA (lncRNA) that also affected chromosome organization and mRNA processing. These analyses uncovered three important points. TEX activate target cell autonomous programs. Responses are initiated by TEX targeting units and are target cell-specific. The strong TEX-promoted lncRNA impact reflects lncRNA shuttling and location-dependent distinct activities. These informations urge for an in depth exploration on the mode of TEX-initiated target cell-specific remodeling including, as a major factor, lncRNA.
肿瘤细胞衍生的细胞外囊泡 (TEX) 表达四跨膜蛋白 Tspan8-alpha4/beta1 支持血管生成。Tspan8-alpha6/beta4 促进肺前转移龛的建立。TEX 促进的靶细胞重编程仍存在争议,我们探讨了大鼠内皮细胞 (EC) 和肺成纤维细胞 (Fb) 在与 TEX 共培养后 mRNA 和 miRNA 谱的变化。TEX 来源于非转移性 BSp73AS (AS) 或转移性 BSp73ASML (ASML) 大鼠肿瘤系,转染了 Tspan8 (AS-Tspan8) 或 Tspan8-shRNA (ASML-Tspan8kd)。在与 TEX 共培养前后,通过深度测序分析 EC 和 Fb 的 mRNA,并通过芯片分析分析 miRNA。与 AS-TEX 相比,EC 和 Fb 对 AS-Tspan8-TEX 的反应更为强烈。尽管 EC 和 Fb 的反应不同,但这两种细胞系主要通过上调和激活信号分子和转录因子来响应膜受体的激活。miRNA 谱中微小的 TEX 起始变化至少部分依赖于长链非编码 RNA (lncRNA),它也影响染色体组织和 mRNA 加工。这些分析揭示了三个重要观点。TEX 激活靶细胞自主程序。反应由 TEX 靶向单元引发,并且是靶细胞特异性的。TEX 强烈促进的 lncRNA 影响反映了 lncRNA 的穿梭和位置依赖性的不同活性。这些信息迫切需要深入探索 TEX 引发的靶细胞特异性重塑模式,包括作为主要因素的 lncRNA。