Murine Cell Line SX9 Bearing a Mutation in the dna-pkcsGene Exhibits Aberrant V(D)J Recombination Not Only in the Coding Joint but Also in the Signal Joint*
Murine Cell Line SX9 Bearing a Mutation in the dna-pkcsGene Exhibits Aberrant V(D)J Recombination Not Only in the Coding Joint but Also in the Signal Joint*
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带有 dna-pkcs 基因突变的鼠细胞系 SX9 不仅在编码接头中而且在信号接头中都表现出异常的 V(D)J 重组*
DOI:
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发表时间:
1998
影响因子:
4.8
通讯作者:
M. Abe
中科院分区:
文献类型:
--
作者:
R. Fukumura;R. Araki;A. Fujimori;M. Mori;Toshiyuki Saito;Fumiaki Watanabe;Mika Sarashi;H. Itsukaichi;K. Eguchi;Koki Sato;K. Tatsumi;M. Abe
We established the radiosensitive cell line SX9 from mammary carcinoma cell line FM3A. In SX9 cells a defect of DNA-dependent protein kinase (DNA-PK) activity was suggested. Additionally, a complementation test suggested that the SX9 cell line belongs to a x-ray cross-complementing group (XRCC) 7. Isolation and sequence analyses of DNA-dependent protein kinase catalytic subunit (dna-pkcs) cDNA in SX9 cells disclosed nucleotide “T” (9572) to “C” transition causing substitution of amino acid residue leucine (3191) to proline. Interestingly, the mutation occurs in one allele, and transcripts of the dna-pkcs expressed exclusively from mutated allele. V(D)J recombination assay using extrachromosomal vector revealed the defects of not only coding but also signal joint formation. The frequency of the signal joint decreased to approximately one-tenth and the fidelity drastically decreased to 12.2% as compared with the normal cell line. To confirm the responsibility of thedna-pkcs gene for abnormal V(D)J recombination in SX9, the full-length dna-pkcs gene was introduced into SX9. As a result, restoration of V(D)J recombination by wild typedna-pkcs cDNA was observed. SX9 is a noveldna-pkcs-deficient cell line.
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影响因子:
3.4
作者:
Lin,JY;Muhlmann-Diaz,MC;Stackhouse,MA;Robinson,JF;Taccioli,GE;Chen,DJ;Bedford,JS
通讯作者:
Bedford,JS
影响因子:
4.4
作者:
Mizuta,R;Taccioli,GE;Alt,FW
通讯作者:
Alt,FW
DOI:
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发表时间:
1997
期刊:
Journal of immunology (Baltimore, Md. : 1950)
影响因子:
--
作者:
Shin,EK;Perryman,LE;Meek,K
通讯作者:
Meek,K
影响因子:
56.9
作者:
TACCIOLI, GE;GOTTLIEB, TM;JEGGO, PA
通讯作者:
JEGGO, PA
DOI:
10.1073/pnas.92.25.11485
发表时间:
1995-12-05
影响因子:
11.1
作者:
WILER, R;LEBER, R;MEEK, K
通讯作者:
MEEK, K