Lack of p53 function promotes radiation-induced mitotic catastrophe in mouse embryonic fibroblast cells.
Lack of p53 function promotes radiation-induced mitotic catastrophe in mouse embryonic fibroblast cells.
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DOI:
10.1186/1475-2867-6-11
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发表时间:
2006-04-26
影响因子:
5.8
通讯作者:
Mackey MA
中科院分区:
文献类型:
--
作者:
Ianzini F;Bertoldo A;Kosmacek EA;Phillips SL;Mackey MA
We have demonstrated that in some human cancer cells both chronic mild heat and ionizing radiation exposures induce a transient block in S and G2 phases of the cell cycle. During this delay, cyclin B1 protein accumulates to supranormal levels, cyclin B1-dependent kinase is activated, and abrogation of the G2/M checkpoint control occurs resulting in mitotic catastrophe (MC). Using syngenic mouse embryonic fibroblasts (MEF) with wild-type or mutant p53, we now show that, while both cell lines exhibit delays in S/G2 phase post-irradiation, the mutant p53 cells show elevated levels of cyclin B1 followed by MC, while the wild-type p53 cells present both a lower accumulation of cyclin B1 and a lower frequency of MC. These results are in line with studies reporting the role of p53 as a post-transcriptional regulator of cyclin B1 protein and confirm that dysregulation of cyclin B1 promote radiation-induced MC. These findings might be exploited to design strategies to augment the yield of MC in tumor cells that are resistant to radiation-induced apoptosis.
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DOI:
10.1083/jcb.115.1.1
发表时间:
1991-10
期刊:
The Journal of cell biology
影响因子:
--
作者:
Pines J;Hunter T
通讯作者:
Hunter T
DOI:
10.1073/pnas.96.5.2147
发表时间:
1999-03-02
影响因子:
11.1
作者:
Innocente, SA;Abrahamson, JLA;Lee, JM
通讯作者:
Lee, JM
影响因子:
3.4
作者:
Chu, K;Teele, N;Dewey, WC
通讯作者:
Dewey, WC
影响因子:
2.6
作者:
Ianzini, F;Cherubini, R;Mackey, MA
通讯作者:
Mackey, MA
影响因子:
3.9
作者:
Erenpreisa, J;Kalejs, M;Illidge, TM
通讯作者:
Illidge, TM