Clustered mutations in the transcriptional activation domain of Myc in 8q24 translocated lymphomas and their functional consequences.

Clustered mutations in the transcriptional activation domain of Myc in 8q24 translocated lymphomas and their functional consequences.
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8q24 易位淋巴瘤中 Myc 转录激活域的聚集突变及其功能后果。

DOI:
10.1007/978-3-642-79275-5_31
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发表时间:
1995
影响因子:
--
通讯作者:
Dang,CV
Dang,CV
中科院分区:
医学3区
文献类型:
--
作者:
Raffeld,M;Yano,T;Hoang,AT;Lewis,B;Clark,HM;Otsuki,T;Dang,CV

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相似文献

染色体8 q24上的Myc基因易位至染色体14 q32、22 q11或2 p12上的免疫球蛋白基因片段被认为是伯基特淋巴瘤发病机制中的中心事件(Dalla-Favera et al. 1982)。伯基特淋巴瘤中Myc易位的分子异质性表明,可能有几种机制导致Myc基因转录的失调,以及随后导致瘤形成的细胞生长调节异常。例如,在伯基特淋巴瘤的许多病例中,免疫球蛋白重链基因的转录增强子Eμ与易位的Myc基因位于同一染色体上,表明它可能负责激活Myc转录(Taub et al. 1982)。然而,在其他情况下,Eμ和Myc位于不同的染色体上(Rabbitts et al. 1983),其他机制必须起作用。在散发性伯基特淋巴瘤中,染色体8 q24上的断裂点经常出现在Myc基因的内含子1中,将癌基因的调控元件与其编码序列分开(Pelicci等,1986)。这表明正常调节元件的缺失也可能在易位癌基因的异常调节中起作用(Taub et al. 1984; Bentley and Groudine 1988; Hann et al. 1988)。
Translocation of the Myc gene on chromosome 8q24 to an immunoglobulin gene segment on chromosomes 14q32, 22q11 or 2p12 is believed to be the central event in the pathogenesis of Burkitt’s lymphoma (Dalla-Favera et al. 1982). The molecular heterogeneity of Myc translocations in Burkitt’s lymphoma, suggests that there may be several mechanisms that account for the resulting deregulation of Myc gene transcription, and the consequent abnormalities in cell growth regulation that lead to neoplasia. For example, in many cases of Burkitt’s lymphoma, the transcriptional enhancer of the immunoglobulin heavy chain gene, Eμ, is located on the same chromosome as the translocated Myc gene, suggesting that it may be responsible for activating Myc transcription (Taub et al. 1982). In other cases, however, Eμ and Myc are located on different chromosomes (Rabbitts et al. 1983), and other mechanisms must operate. In sporadic Burkitt’s lymphomas the breakpoints on chromosome 8q24 frequently occur in intron 1 of the Myc gene, separating the oncogene’s regulatory elements from its coding sequences (Pelicci et al. 1986). This suggests that loss of normal regulatory elements may also play a role in abnormal regulation of the translocated oncogene (Taub et al. 1984; Bentley and Groudine 1988; Hann et al. 1988).
DOI: 10.1002/j.1460-2075.1986.tb04302.x
发表时间: 1986-05-01
期刊: EMBO JOURNAL
影响因子: 11.4
作者:
CARE, A;CIANETTI, L;PESCHLE, C
通讯作者: PESCHLE, C
DOI: 10.1073/pnas.83.9.2984
发表时间: 1986-05-01
影响因子: 11.1
作者:
PELICCI, PG;KNOWLES, DM;DALLAFAVERA, R
通讯作者: DALLAFAVERA, R
易位的人类 c-myc 癌基因的保守编码序列发生改变。
DOI: 10.1073/pnas.83.9.2939
发表时间: 1986
影响因子: 11.1
作者:
W. Murphy;J. Sarid;R. Taub;T. Vasicek;J. Battey;G. Lenoir;P. Leder
通讯作者: P. Leder
DOI: 10.1073/pnas.79.24.7824
发表时间: 1982-01-01
期刊: PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA-BIOLOGICAL SCIENCES
影响因子: --
作者:
DALLAFAVERA, R;BREGNI, M;CROCE, CM
通讯作者: CROCE, CM
DOI: 10.1016/0092-8674(84)90227-7
发表时间: 1984-01-01
期刊: CELL
影响因子: 64.5
作者:
TAUB, R;MOULDING, C;LEDER, P
通讯作者: LEDER, P