Expression of a truncated retroviral envelope gene enhances expression of normal cellular phenotypes.

Expression of a truncated retroviral envelope gene enhances expression of normal cellular phenotypes.
复制标题

截短的逆转录病毒包膜基因的表达增强了正常细胞表型的表达。

DOI:
10.1007/bf02253367
复制
发表时间:
2000
影响因子:
11
通讯作者:
Wong,PM
Wong,PM
中科院分区:
医学1区
文献类型:
--
作者:
Chen,H;Chung,SW;Wong,PM

文献摘要

参考文献

相似文献

莫洛尼鼠白血病病毒(Mo-MLV)的包膜基因及其各种功能域已被广泛研究,但在其对细胞生长的生物学效应方面研究还不够多。在这项研究中,我们报告了截短的 Mo-MLV 包膜基因 LN11 的生物学特征,该基因缺乏信号肽。与对照相比,它在各种细胞类型中的表达使转导的细胞呈现出更正常的表型,其定义为接触抑制和因子依赖性的增加以及致瘤性的降低。与对照相比,LN11 转导的成纤维细胞表现出更高程度的接触抑制,呈现更扁平的形态并且更粘附。在 v-abl 转化的造血细胞中,LN11 的表达导致细胞生长减慢,这是由于对外源生长因子的依赖性增强。 LN11 的强制表达还导致肿瘤发展速度减慢和肿瘤负荷减少。因此,逆转录病毒基因组的修饰可能对细胞生长和发育产生重大影响。这是我们在构建用于基因治疗的逆转录病毒载体时需要仔细考虑安全问题的一个例子。
The envelope gene of Moloney murine leukemia virus (Mo-MLV) and its various functional domains have been studied extensively but not as much in terms of their biological effects on cell growth. In this study, we report the biological characterization of a truncated Mo-MLV envelope gene, LN11, which is devoid of a signal peptide. Its expression in various cell types, as compared to the control, enabled the transduced cells to assume a more normal phenotype, which is defined by an increase in contact inhibition and factor dependence, as well as reduced tumorigenicity. LN11-transduced fibroblasts exhibited a higher degree of contact inhibition, assumed a more flattened morphology and were more adherent compared to the control. In v-abl transformed hematopoietic cells, expression of LN11 resulted in slower cell growth, which was due to an enhanced dependence on exogenous growth factors. Enforced expression of LN11 also resulted in a slower rate of tumor development and a reduced tumor load. Thus, modification of a retroviral genome could have a significant impact on cell growth and development. This is one example where we need to consider the safety issue carefully when constructing retrovirus vectors for gene therapy.
VL30 U3 亚组的诱导型和细胞类型特异性表达与其增强子设计相关
DOI: 10.1128/jvi.68.1.276-288.1994
发表时间: 1994
影响因子: 5.4
作者:
M. Nilsson;S. Bohm
通讯作者: S. Bohm
参与 Friend 鼠白血病病毒包膜糖蛋白寡聚化的分子结构域。
DOI: 10.1016/0042-6822(91)90542-j
发表时间: 1991
期刊: Virology
影响因子: 3.7
作者:
Tucker,SP;Srinivas,RV;Compans,RW
通讯作者: Compans,RW
具有干细胞特性的永生化造血细胞。
DOI: 10.1016/1074-7613(94)90047-7
发表时间: 1994
期刊: Immunity
影响因子: 32.4
作者:
Wong,PM;Han,XD;Ruscetti,FW;Chung,SW
通讯作者: Chung,SW
正常 BALB/c 淋巴细胞中内源性前病毒元件离散家族的选择性激活
DOI: --
发表时间: 1992
影响因子: 5.3
作者:
J. Mietz;J. Fewell;E. Kuff
通讯作者: E. Kuff
内源性嗜食性鼠白血病病毒基因组在小鼠染色体DNA中的迁移性以及水貂细胞病灶形成病毒型重组原病毒在种系中的整合
DOI: --
发表时间: 1982
影响因子: 5.4
作者:
Wim Quint;H. V. D. Putten;Frans Janssen;Anton;'. Berns
通讯作者: '. Berns