Three-dimensional culture of an ovine pulmonary adenocarcinoma-derived cell line results in re-expression of surfactant proteins and Jaagsiekte sheep retrovirus.

Three-dimensional culture of an ovine pulmonary adenocarcinoma-derived cell line results in re-expression of surfactant proteins and Jaagsiekte sheep retrovirus.
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卵巢肺腺癌衍生的细胞系的三维培养会导致表面活性剂蛋白和Jaagsiekte绵羊逆转录病毒的重新表达。

DOI:
10.1016/j.virol.2011.03.018
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发表时间:
2011-05-25
期刊:
影响因子:
3.7
通讯作者:
Fan H
Fan H
中科院分区:
医学3区
文献类型:
--
作者:
Johnson C;Fan H

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绵羊肺腺瘤病毒(Jaagsiekte sheep retrovirus,JSRV)是绵羊肺腺癌(ovine pulmonary adenocarcinoma,OPA)的病原。一个主要的兴趣是阐明作为癌基因的病毒包膜(Env)的转化机制。这些研究将受益于来自维持分化状态的II型肺细胞的细胞系。在这项研究中,我们使用了OPA衍生的细胞系(JS 7),它已经失去了II型肺细胞的结构和功能特性,并且在2-D单层培养中生长时不再表达JSRV。当使用Matrigel将JS 7细胞置于3-D培养物中时,它们生长为重新表达II型肺细胞特征性表面活性蛋白的极化细胞的小球。此外,通过几个标准,在3-D中生长的JS 7细胞重新表达JSRV病毒。本研究强调了培养环境对维持OPA肿瘤细胞分化状态以及JSRV表达的重要性。
Jaagsiekte sheep retrovirus (JSRV) is the causative agent of ovine pulmonary adenocarcinoma (OPA) in sheep. A major interest is elucidating the mechanism(s) of transformation by the viral envelope (Env) that functions as an oncogene. These studies would benefit from a cell line derived from type II pneumocytes that have maintained the differentiation state. In this study we used an OPA-derived cell line (JS7), which has lost structural and functional properties of type II pneumocytes, and no longer expresses JSRV when grown in 2-D monolayer culture. When JS7 cells were placed in 3-D culture using Matrigel, they grew as small spheres of polarized cells that re-expressed surfactant proteins characteristic of type II pneumocytes. Moreover, JS7 cells grown in 3-D re-expressed JSRV virus by several criteria. This study underscores the importance of the culture environment on maintaining the differentiation state of OPA tumor cells as well as expression of JSRV.
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