TMPRSS2-ERG gene fusion in small cell carcinoma of the prostate.
TMPRSS2-ERG gene fusion in small cell carcinoma of the prostate.
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DOI:
10.1016/j.humpath.2010.05.026
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发表时间:
2011-01
期刊:
影响因子:
3.3
通讯作者:
Czerniak BA
中科院分区:
文献类型:
--
作者:
Guo CC;Dancer JY;Wang Y;Aparicio A;Navone NM;Troncoso P;Czerniak BA
Recent studies have shown that most prostate cancers carry the TMPRSS2-ERG gene fusion. Here we evaluated the TMPRSS2-ERG gene fusion in small cell carcinoma (SCC) of the prostate (n=12) in comparison with SCC of the urinary bladder (n=12) and lung (n=11). Florescence in situ hybridization demonstrated rearrangement of the ERG gene in 8 cases of prostatic SCC (67%), and the rearrangement was associated with deletion of the 5' ERG gene in 7 cases. But rearrangement of the ERG gene was not present in any SCC of the urinary blader or lung. Next we evaluated the TMPRSS2-ERG gene fusion in nude mouse xenografts that were derived from two prostatic SCCs carrying the TMPRSS2-ERG gene fusion. Two transcripts encoded by the TMPRSS2-ERG gene fusion were detected by RT-PCR, and DNA sequencing demonstrated that the two transcripts were composed of fusions of exon 1 of the TMPRSS2 gene to exon 4 or 5 of the ERG gene. Our study demonstrates the specific presence of TMPRSS2-ERG gene fusion in prostatic SCC, which may be helpful in distinguishing SCC of prostatic origin from non-prostatic origins. The high prevalence of the TMPRSS2-ERG gene fusion in prostatic SCC as well as adenocarcinoma implies that SCC may share a common pathogenic pathway with adenocarcinoma in the prostate.
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