REDUCING ANNEXIN I OR II IN 3-D CULTURE BENIGN PROSTATIC EPITHELIAL CELLS

本子项目是利用由NIH/NCRR资助的中心赠款提供的资源的众多研究子项目之一。子项目和研究者（PI）可能已经从另一个NIH来源获得了主要资金，因此可以在其他CRISP条目中表示。列出的机构是中心的，不一定是研究者的机构。人们普遍认为高级别前列腺上皮内瘤变（HGPIN）是一种癌前病变。包括我们在内的几个研究小组已经证明，大多数HGPIN病变的膜联蛋白（ANX） I和II蛋白水平降低或缺失。然而，联膜蛋白表达减少与HGPIN之间的因果关系尚未确定。为了研究这种可能性，我们在良性前列腺上皮细胞中沉默了ANX I或II的表达，并在三维（3-D）培养中检查了腺结构和细胞极性。为了确定在正常前列腺上皮细胞中沉默ANX I和II的表达是否会改变三维培养中腺泡结构的发展，我们将通过共聚焦激光扫描显微镜（LSM）、多光子显微镜（MPM）和MPM/光学相干断层扫描（OCT）系统研究三维结构

This subproject is one of many research subprojects utilizing the resources provided by a Center grant funded by NIH/NCRR. The subproject and investigator (PI) may have received primary funding from another NIH source, and thus could be represented in other CRISP entries. The institution listed is for the Center, which is not necessarily the institution for the investigator. It is generally accepted that high-grade prostatic intraepithelial neoplasia (HGPIN) is a precancerous lesion. Several groups, including ours, have demonstrated that the majority of HGPIN lesions have reduced or absent levels of annexins (ANX) I and II proteins. However, a causative link between the reduced expression of annexins and HGPIN has not been established. To investigate this possibility we have silenced ANX I or II expression in benign prostatic epithelial cells and examined the glandular architecture and cellular polarity in 3-dimentional (3-D) culture. To determine if silencing ANX I and II expression in normal prostatic epithelial cells alters development of acinar structures in 3-D culture, we will investigate 3-D structures by using confocal laser scanning microscopy (LSM), multiphoton microscopy (MPM) and MPM/optical coherence tomography (OCT) system