Regulation of ppp(A2'p)nA-dependent RNase levels during interferon treatment and cell differentiation.
Regulation of ppp(A2'p)nA-dependent RNase levels during interferon treatment and cell differentiation.
复制标题
在干扰素治疗和细胞分化过程中调节 ppp(A2p)nA 依赖性 RNase 水平。
DOI:
10.1111/j.1432-1033.1985.tb08695.x
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发表时间:
1985
期刊:
影响因子:
--
通讯作者:
Friedman,RM
中科院分区:
文献类型:
--
作者:
Krause,D;Silverman,RH;Jacobsen,H;Leisy,SA;Dieffenbach,CW;Friedman,RM
The intracellular effector oligonucleotides ppp(A2′p)nA (n= 2−≥4) regulate the breakdown of RNA by activating ppp(A2′p)nA‐dependent RNase. Cellular levels of this RNase were demonstrated to be regulated during differentiation of murine embryonal carcinoma cells. An induction of this RNase by interferon was demonstrated in each of three differentiated cell types (F9 clone 9, PYS, and PSA 5E) by analyzing rRNA breakdown following the introduction of ppp(A2′p)nA into the intact cells. In contrast, in three undifferentiated embryonal carcinoma cell lines (F9, PC13 clone 5, and Nulli 2A) there was little if any ppp(A2′p)nA‐dependent RNase either with or without interferon pretreatment. These results were confirmed by affinity labeling of the RNase in cell‐free systems. Addition of the proteinase inhibitor, leupeptin, to the cell lysis buffer was necessary to stabilize the RNase against cleavage to discrete breakdown products. Moreover, during differentiation of PC13 clone 5 cells by retinoic acid andN6,O2′‐dibutyryl‐adenosine 3′,5′‐monophosphate there was a gradual induction of ppp(A2′p)nA‐dependent RNase. The expression of this RNase is, therefore, greatly enhanced during cell differentiation. In addition, the double‐stranded‐RNA‐dependent protein kinase was investigated and was found to be interferon‐inducible in all of the cell lines regardless of the state of cell differentiation.
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DOI:
--
发表时间:
1981
期刊:
The Journal of biological chemistry
影响因子:
--
作者:
Nilsen,TW;Wood,DL;Baglioni,C
通讯作者:
Baglioni,C
DOI:
10.1016/0006-291x(82)90647-7
发表时间:
1982
影响因子:
3.1
作者:
P. J. Cayley;M. Knight;I. Kerr
通讯作者:
I. Kerr
DOI:
--
发表时间:
1977
期刊:
European Journal of Biochemistry
影响因子:
--
作者:
E. Adamson;M. Evans;G. Magrane
通讯作者:
G. Magrane
影响因子:
3.7
作者:
M. Aguet;I. Gresser;A. Hovanessian;M. Bandu;B. Blanchard;D. Blangy
通讯作者:
D. Blangy
DOI:
--
发表时间:
1982
期刊:
The Journal of biological chemistry
影响因子:
--
作者:
Floyd-Smith,G;Yoshie,O;Lengyel,P
通讯作者:
Lengyel,P