Matched pairs of human prostate stromal cells display differential tropic effects on LNCaP prostate cancer cells

In Vitro Cellular & Developmental Biology - Animal - 2010
Xiaojuan Sun1, Hui He1, Zhihui Xie1, Weiping Qian1, Haiyen E. Zhau1, Leland W. K. Chung1, Fray F. Marshall1, Ruoxiang Wang1
1Molecular Urology and Therapeutics, Department of Urology and Winship Cancer Institute, Emory University School of Medicine, Atlanta, USA

Tóm tắt

Prostate stromal cells may play binary roles in the process of prostate cancer development. As the first to be encountered by infiltrating prostate cancer cells, prostate stromal cells form the first defense line against prostate cancer progression and metastasis. However, interaction between prostate cancer and stromal cells may facilitate the formation of a tumor microenvironment favoring cancer cell growth and survival. To establish an experimental system for studying the interaction between cancer and stromal cells, we isolated three matched pairs of normal and cancer-associated human prostate stromal clones. In this report, we describe the morphologic and behavioral characteristics of these cells and their effect on LNCaP prostate cancer cells in co-culture. Unlike LNCaP prostate cancer cells, the isolated prostate stromal clones are large fibroblast-like cells with a slow proliferation rate. Growth and survival of these clones are not affected by androgens. The stromal cells display high resistance to serum starvation, while cancer-associated stromal clones have differentiated survival ability. In co-culture experiments, the stromal cells protected some LNCaP prostate cancer cells from death by serum starvation, and cancer-associated stromal clones showed more protection. This work thus established a panel of valuable human prostate stromal cell lines, which could be used in co-culture to study the interaction between prostate cancer and prostate stromal cells.

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