Identification of recurrent type‐2 NF1 microdeletions reveals a mitotic nonallelic homologous recombination hotspot underlying a human genomic disorder
Identification of recurrent type‐2 NF1 microdeletions reveals a mitotic nonallelic homologous recombination hotspot underlying a human genomic disorder
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复发性 2 型 NF1 微缺失的鉴定揭示了人类基因组疾病背后的有丝分裂非等位同源重组热点
DOI:
10.1002/humu.22171
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发表时间:
2012
期刊:
影响因子:
3.9
通讯作者:
Kehrer-Sawatzki H
中科院分区:
文献类型:
--
作者:
Vogt J;Mussotter T;Bengesser K;Claes K;Högel J;Chuzhanova N;van den Ende J;Mautner VF;Cooper DN;Messiaen L;Kehrer-Sawatzki H
Nonallelic homologous recombination (NAHR) is one of the major mechanisms underlying copy number variation in the human genome. Although several disease‐associated meiotic NAHR breakpoints have been analyzed in great detail, hotspots for mitotic NAHR are not well characterized. Type‐2NF1microdeletions, which are predominantly of postzygotic origin, constitute a highly informative model with which to investigate the features of mitotic NAHR. Here, a custom‐designed MLPA‐ and PCR‐based approach was used to identify 23 novel NAHR‐mediated type‐2NF1deletions. Breakpoint analysis of these 23 type‐2 deletions, together with 17 NAHR‐mediated type‐2 deletions identified previously, revealed that the breakpoints are nonuniformly distributed within the paralogousSUZ12andSUZ12Psequences. Further, the analysis of this large group of type‐2 deletions revealed breakpoint recurrence within short segments (ranging in size from 57 to 253‐bp) as well as the existence of a novel NAHR hotspot of 1.9‐kb (termed PRS4). This hotspot harbored 20% (8/40) of the type‐2 deletion breakpoints and contains the 253‐bp recurrent breakpoint region BR6 in which four independent type‐2 deletion breakpoints were identified. Our findings indicate that a combination of an open chromatin conformation and short non‐B DNA‐forming repeats may predispose to recurrent mitotic NAHR events betweenSUZ12and its pseudogene. Hum Mutat 33:1599–1609, 2012. © 2012 Wiley Periodicals, Inc.
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影响因子:
14.5
作者:
Belancio VP;Roy-Engel AM;Deininger PL
通讯作者:
Deininger PL
DOI:
10.1073/pnas.1003634107
发表时间:
2010
期刊:
Proceedings of the National Academy of Sciences
影响因子:
--
作者:
R. Neumann;Victoria E Lawson;A. Jeffreys
通讯作者:
A. Jeffreys
影响因子:
9.8
作者:
Katharina Steinmann;D. Cooper;L. Kluwe;N. Chuzhanova;C. Senger;E. Serra;C. Lázaro;M. Gilaberte;K. Wimmer;V. Mautner;H. Kehrer
通讯作者:
H. Kehrer
影响因子:
3.7
作者:
Beert, Eline;Brems, Hilde;Legius, Eric
通讯作者:
Legius, Eric
影响因子:
4.1
作者:
Aijaz Ahmed;E. Keeffe
通讯作者:
E. Keeffe