Inducible and cell type-specific expression of VL30 U3 subgroups correlate with their enhancer design
Inducible and cell type-specific expression of VL30 U3 subgroups correlate with their enhancer design
复制标题
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
复制
发表时间:
1994
影响因子:
5.4
通讯作者:
S. Bohm
中科院分区:
文献类型:
--
作者:
M. Nilsson;S. Bohm
The murine VL30 elements constitute one family of retrotransposons represented in 100 to 200 copies that are dispersed among the mouse chromosomes. On the basis of sequence homology, we have subdivided mouse VL30 members into four distinct U3 subgroups. The use of subgroup-specific probes in Northern (RNA) blot analyses shows that individual VL30 U3 subgroups are expressed in a tissue-specific manner. We show by in situ hybridization of mouse skin treated with 12-O-tetradecanoylphorbol-13-acetate (TPA) that VL30 expression is induced in epidermal keratinocytes but not in dermal fibroblasts. Transient transfections of reporter gene plasmids together with in vitro binding analysis indicate that TPA-induced VL30 transcription specific for keratinocytes is mediated by two cooperating sequence motifs in juxtaposed position. One sequence motif is shown to constitutively bind CREB- and Jun-related proteins in both keratinocytes and fibroblasts, whereas the other is a target for TPA-induced c-Rel/p65(NF-kappa B)-binding activity specifically in keratinocytes. These binding sites are found to be conserved within U3 subgroups and individual U3 regions showing induced expression in TPA-treated mouse epidermis. These results together with a sequence comparison between different U3 subgroups indicate that cell type-specific activity of transcription factors known to regulate VL30 transcription and the presence or absence of their cognate binding sites within individual U3 regions determine inducible and cell type-specific VL30 expression. The variable VL30 U3 regions might thus be useful tools to study inducible and cell type-specific transcription in many different cell systems.
登录
查看更多内容
DOI:
10.1210/mend.6.7.1324418
发表时间:
1992
期刊:
Molecular endocrinology (Baltimore, Md.)
影响因子:
--
作者:
Reddy,MA;Langer,SJ;Colman,MS;Ostrowski,MC
通讯作者:
Ostrowski,MC
影响因子:
2.7
作者:
S. Nordeen
通讯作者:
S. Nordeen
影响因子:
10.5
作者:
Speck,NA;Renjifo,B;Golemis,E;Fredrickson,TN;Hartley,JW;Hopkins,N
通讯作者:
Hopkins,N
DOI:
--
发表时间:
1988-12
期刊:
The Journal of biological chemistry
影响因子:
--
作者:
P. Deutsch;J. Hoeffler;J. Jameson;J. Lin;J. Habener
通讯作者:
P. Deutsch;J. Hoeffler;J. Jameson;J. Lin;J. Habener
影响因子:
56.9
作者:
HU, WS;TEMIN, HM
通讯作者:
TEMIN, HM