Decreased Frequency of Somatic Hypermutation and Impaired Affinity Maturation but Intact Germinal Center Formation in Mice Expressing Antisense RNA to DNA Polymerase ζ1
Decreased Frequency of Somatic Hypermutation and Impaired Affinity Maturation but Intact Germinal Center Formation in Mice Expressing Antisense RNA to DNA Polymerase ζ1
复制标题
表达反义 RNA 到 DNA 聚合酶 ζ1 的小鼠体细胞超突变频率降低,亲和力成熟受损,但生发中心形成完整
DOI:
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复制
发表时间:
2001
影响因子:
4.4
通讯作者:
Norman R. Klinman
中科院分区:
文献类型:
--
作者:
M. Diaz;L. Verkoczy;M. Flajnik;Norman R. Klinman
To examine a role of DNA polymerase ζ in somatic hypermutation, we generated transgenic mice that express antisense RNA to a portion of mouse REV3, the gene encoding this polymerase. These mice express high levels of antisense RNA, significantly reducing the levels of endogenous mouse REV3 transcript. Following immunization to a hapten-protein complex, transgenic mice mounted vigorous Ab responses, accomplished the switch to IgG, and formed numerous germinal centers. However, in most transgenic animals, the generation of high affinity Abs was delayed. In addition, accumulation of somatic mutations in the VH genes of memory B cells from transgenic mice was decreased, particularly among those that generate amino acid replacements that enhance affinity of the B cell receptor to the hapten. These data implicate DNA polymerase ζ, a nonreplicative polymerase, in the process of affinity maturation, possibly through a role in somatic hypermutation, clonal selection, or both.
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DOI:
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发表时间:
1986
期刊:
Journal of immunology (Baltimore, Md. : 1950)
影响因子:
--
作者:
Zharhary,D;Klinman,NR
通讯作者:
Klinman,NR
DOI:
10.1073/pnas.96.13.7376
发表时间:
1999-06-22
影响因子:
11.1
作者:
Luo, GB;Yao, MS;Petrini, JHJ
通讯作者:
Petrini, JHJ
DOI:
--
发表时间:
1992
期刊:
The Journal of biological chemistry
影响因子:
--
作者:
Celano,P;Berchtold,CM;Kizer,DL;Weeraratna,A;Nelkin,BD;Baylin,SB;CaseroJr,RA
通讯作者:
CaseroJr,RA
影响因子:
3.3
作者:
Golding,GB;Gearhart,PJ;Glickman,BW
通讯作者:
Glickman,BW
影响因子:
32.4
作者:
Furukawa, K;Akasako-Furukawa, A;Azuma, T
通讯作者:
Azuma, T