Biochemical evidence for a novel low molecular weight 2-5A-dependent RNase L in chronic fatigue syndrome.
Biochemical evidence for a novel low molecular weight 2-5A-dependent RNase L in chronic fatigue syndrome.
复制标题
慢性疲劳综合征中新型低分子量 2-5A 依赖性 RNase L 的生化证据。
DOI:
10.1089/jir.1997.17.377
复制
发表时间:
1997
期刊:
影响因子:
--
通讯作者:
Pfleiderer,W
中科院分区:
文献类型:
--
作者:
Suhadolnik,RJ;Peterson,DL;O'Brien,K;Cheney,PR;Herst,CV;Reichenbach,NL;Kon,N;Horvath,SE;Iacono,KT;Adelson,ME;DeMeirleir,K;DeBecker,P;Charubala,R;Pfleiderer,W
Previous studies from this laboratory have demonstrated a statistically significant dysregulation in several key components of the 2′,5′-oligoadenylate (2-5A) synthetase/RNase L and PKR antiviral pathways in chronic fatigue syndrome (CFS) (Suhadolnik et al.Clin Infect Dis18, S96—104, 1994; Suhadolnik et al.In Vivo8, 599-604,1994). Two methodologies have been developed to further examine the upregulated RNase L activity in CFS. First, photoaffinity labeling of extracts of peripheral blood mononuclear cells (PBMC) with the azido 2-5A photoaffinity probe, [32P]pApAp(8-azidoA), followed by immunoprecipitation with a polyclonal antibody against recombinant, human 80-kDa RNase L and analysis under denaturing conditions. A subset of individuals with CFS was identified with only one 2-5A binding protein at 37 kDa, whereas in extracts of PBMC from a second subset of CFS PBMC and from healthy controls, photolabeled/immunoreactive 2-5A binding proteins were detected at 80, 42, and 37 kDa. Second, analytic gel permeation HPLC was completed under native conditions. Extracts of healthy control PBMC revealed 2-5A binding and 2-5 A-dependent RNase L enzyme activity at 80 and 42 kDa as determined by hydrolysis of poly(U)-3′-[32P]pCp. A subset of CFS PBMC contained 2-5A binding proteins with 2-5A-dependent RNase L enzyme activity at 80, 42, and 30 kDa. However, a second subset of CFS PBMC contained 2-5A binding and 2-5A-dependent RNase L enzyme activity only at 30 kDa. Evidence is provided indicating that the RNase L enzyme dysfunction in CFS is more complex than previously reported.
登录
查看更多内容
影响因子:
2.9
作者:
Karikó,K;Li,SW;SobolJr,RW;Suhadolnik,RJ;Charubala,R;Pfleiderer,W
通讯作者:
Pfleiderer,W
DOI:
--
发表时间:
1987
期刊:
Journal of immunology (Baltimore, Md. : 1950)
影响因子:
--
作者:
Caligiuri,M;Murray,C;Buchwald,D;Levine,H;Cheney,P;Peterson,D;Komaroff,AL;Ritz,J
通讯作者:
Ritz,J
影响因子:
3.7
作者:
WELLS, V;MALLUCCI, L
通讯作者:
MALLUCCI, L
DOI:
--
发表时间:
1994
期刊:
In vivo (Athens, Greece)
影响因子:
--
作者:
Suhadolnik,RJ;Reichenbach,NL;Hitzges,P;Adelson,ME;Peterson,DL;Cheney,P;Salvato,P;Thompson,C;Loveless,M;Müller,WE
通讯作者:
Müller,WE
DOI:
10.1016/s0021-9258(17)36767-4
发表时间:
1994-05
期刊:
The Journal of biological chemistry
影响因子:
--
作者:
B. Dong;Lulu Xu;Aimin Zhou;B. Hassel;X. Lee;P. Torrence;R. Silverman
通讯作者:
B. Dong;Lulu Xu;Aimin Zhou;B. Hassel;X. Lee;P. Torrence;R. Silverman