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Hepsin 在前列腺癌小鼠模型中与 MYC 协同促进腺癌进展。

Hepsin cooperates with MYC in the progression of adenocarcinoma in a prostate cancer mouse model.

机构信息

Department of Urologic Surgery, Vanderbilt University Medical Center, Nashville, Tennessee 37232-2765, USA.

出版信息

Prostate. 2010 May 1;70(6):591-600. doi: 10.1002/pros.21093.

DOI:10.1002/pros.21093
PMID:19938013
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC2925264/
Abstract

BACKGROUND

Hepsin is a cell surface protease that is over-expressed in more than 90% of human prostate cancer cases. The previously developed Probasin-hepsin/Large Probasin-T antigen (PB-hepsin/LPB-Tag) bigenic mouse model of prostate cancer demonstrates that hepsin promotes primary tumors that are a mixture of adenocarcinoma and neuroendocrine (NE) lesions, and metastases that are NE in nature. However, since the majority of human prostate tumors are adenocarcinomas, the contribution of hepsin in the progression of adenocarcinoma requires further investigation.

METHODS

We crossed the PB-hepsin mice with PB-Hi-myc transgenic mouse model of prostate adenocarcinoma and characterized the tumor progression in the resulting PB-hepsin/PB-Hi-myc bigenic mice.

RESULTS

We report that PB-hepsin/PB-Hi-myc bigenic mice develop invasive adenocarcinoma at 4.5 months. Further, histological analysis of the 12- to 17-month-old mice revealed that the PB-hepsin/PB-Hi-myc model develops a higher grade adenocarcinoma compared with age-matched tumors expressing only PB-Hi-myc. Consistent with targeting hepsin to the prostate, the PB-hepsin/PB-Hi-myc tumors showed higher hepsin expression as compared to the age-matched myc tumors. Furthermore, endogenous expression of hepsin increased in the PB-Hi-myc mice as the tumors progressed.

CONCLUSIONS

Although we did not detect any metastases from the prostates in either the PB-hepsin/PB-Hi-myc or the PB-Hi-myc mice, our data suggests that hepsin and myc cooperate during the progression to high-grade prostatic adenocarcinoma.

摘要

背景

Hepsin 是一种细胞表面蛋白酶,在超过 90%的人类前列腺癌病例中过度表达。以前开发的 Probasin-hepsin/Large Probasin-T 抗原(PB-hepsin/LPB-Tag)双基因前列腺癌小鼠模型表明,hepsin 促进了由腺癌和神经内分泌(NE)病变混合组成的原发性肿瘤,并促进了具有 NE 性质的转移。然而,由于大多数人类前列腺肿瘤是腺癌,因此需要进一步研究 hepsin 在腺癌进展中的作用。

方法

我们将 PB-hepsin 小鼠与 PB-Hi-myc 转基因前列腺腺癌小鼠模型杂交,并对由此产生的 PB-hepsin/PB-Hi-myc 双基因小鼠的肿瘤进展进行了特征描述。

结果

我们报告称,PB-hepsin/PB-Hi-myc 双基因小鼠在 4.5 个月时会发展为侵袭性腺癌。此外,对 12-17 个月大的小鼠进行组织学分析表明,与仅表达 PB-Hi-myc 的年龄匹配肿瘤相比,PB-hepsin/PB-Hi-myc 模型发展为更高等级的腺癌。与将 hepsin 靶向前列腺一致,与年龄匹配的 myc 肿瘤相比,PB-hepsin/PB-Hi-myc 肿瘤表现出更高的 hepsin 表达。此外,随着肿瘤的进展,PB-Hi-myc 小鼠中的内源性 hepsin 表达增加。

结论

尽管我们在 PB-hepsin/PB-Hi-myc 或 PB-Hi-myc 小鼠的前列腺中均未检测到任何转移,但我们的数据表明,在向高级别前列腺腺癌进展过程中,hepsin 和 myc 合作。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/489c/2925264/4268d0c93dbf/nihms216660f6.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/489c/2925264/fcfc33017c51/nihms216660f1.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/489c/2925264/c206001f99d5/nihms216660f2.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/489c/2925264/77a88f26198c/nihms216660f3.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/489c/2925264/90647d36fd94/nihms216660f4.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/489c/2925264/2f348033e47b/nihms216660f5.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/489c/2925264/4268d0c93dbf/nihms216660f6.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/489c/2925264/fcfc33017c51/nihms216660f1.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/489c/2925264/c206001f99d5/nihms216660f2.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/489c/2925264/77a88f26198c/nihms216660f3.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/489c/2925264/90647d36fd94/nihms216660f4.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/489c/2925264/2f348033e47b/nihms216660f5.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/489c/2925264/4268d0c93dbf/nihms216660f6.jpg

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