scholarly journals The differential effects of prostate stromal cells derived from different zones on prostate cancer epithelial cells under the action of sex hormones

2011 ◽  
Vol 13 (6) ◽  
pp. 798-805 ◽  
Author(s):  
Qi Jiang ◽  
Bang-Min Han ◽  
Fu-Jun Zhao ◽  
Yan Hong ◽  
Shu-Jie Xia
Keyword(s):  
Prostate Cancer ◽  
Epithelial Cells ◽  
Sex Hormones ◽  
Stromal Cells ◽  
Differential Effects

Effect of androgen signaling in stromal cells on growth of prostate cancer.

2016 ◽  
Vol 34 (2_suppl) ◽  
pp. 297-297 ◽  
Author(s):  
Chun-Peng Liao ◽  
Leng-Ying Chen ◽  
Andrea Luethy ◽  
Youngsoo Kim ◽  
A. Robert MacLeod ◽  
...  
Keyword(s):  
Prostate Cancer ◽  
Epithelial Cells ◽  
Cancer Cells ◽  
Stromal Cells ◽  
Culture System ◽  
Human Prostate ◽  
Human Prostate Cancer ◽  
Prostate Cancer Cells ◽  
Epithelial Cancer ◽  
Mesenchymal Transition

297 Background: Interactions between epithelial and stroma cells are important in the development of prostate cancer (PCa). Cancer-associated fibroblasts (CAFs) have been to support tumor progression, metastasis, and differentiation. Androgen receptor (AR) and related pathways are known to support the growth and survival of prostate epithelial cancer cells, the roles of AR-dependent processes in cancerous stroma are less clear. We sought to investigate if AR-dependent pathways present in CAF cells influence the growth and tumorogencity of epithelial cancer cells in relation to androgen-deprivation therapy in prostate cancer. Methods: Murine CAFs were isolated from a well-described PTEN-dependent cancer mouse model (Liao, et al Cancer Res, 2010. 70(18):7294). A co-culture system was developed based on multiple lines of murine CAFs grown along with human prostate cancer epithelial cells, and a murine-specific anti-sense oligonucleotide (ASO) against murine AR was used to specifically suppress AR expression in murine CAFs in this system. RT-PCR was used to investigate changes in gene expression. Results: Using this co-culture system, we found that murine CAFs promoted cell proliferation and colony formation in several human prostate cancer cell lines. Further, these processes were decreased by suppression of AR-expression in CAFs. Expression of genes related to tumorigenicity in epithelial cells were investigated. Markers associated with epithelial-mesenchymal transition (EMT, N-Cad) and “stemness” (OCT4, Sox2, Nanog) were increased in human prostate cancer cells grown with low-AR CAFs. Conclusions: Our data indicates that suppression of AR in CAFs results in down-regulation in the growth and tumorigenicity of prostate cancer cells through pathways related to EMT and “cell reprograming”. As such, development of therapies which inhibit the tumor-promoting pathways present in stromal cells may be one approach to improve the treatment of prostate cancer.

scholarly journals The Role of Androgen Receptor in Cross Talk Between Stromal Cells and Prostate Cancer Epithelial Cells

2021 ◽  
Vol 9 ◽  
Author(s):  
Qianyao Tang ◽  
Bo Cheng ◽  
Rongyang Dai ◽  
Ronghao Wang
Keyword(s):  
Prostate Cancer ◽  
Androgen Receptor ◽  
Tumor Microenvironment ◽  
Epithelial Cells ◽  
Cross Talk ◽  
Cell Invasion ◽  
Stromal Cells ◽  
Neuroendocrine Cells ◽  
Stromal Fibroblasts ◽  
Biological Regulation

Prostate cancer (PCa) lists as the second most lethal cancer for men in western countries, and androgen receptor (AR) plays a central role in its initiation and progression, which prompts the development of androgen deprivation therapy (ADT) as the standard treatment. Prostate tumor microenvironment, consisting of stromal cells and extracellular matrix (ECM), has dynamic interactions with PCa epithelial cells and affects their growth and invasiveness. Studies have shown that both genomic and non-genomic AR signaling pathways are involved in the biological regulation of PCa epithelial cells. In addition, AR signaling in prostate stroma is also involved in PCa carcinogenesis and progression. Loss of AR in PCa stroma is clinically observed as PCa progresses to advanced stage. Especially, downregulation of AR in stromal fibroblasts dysregulates the expression levels of ECM proteins, thus creating a suitable environment for PCa cells to metastasize. Importantly, ADT treatment enhances this reciprocal interaction and predisposes stromal cells to promote cell invasion of PCa cells. During this process, AR in PCa epithelium actively responds to various stimuli derived from the surrounding stromal cells and undergoes enhanced degradation while elevating the expression of certain genes such as MMP9 responsible for cell invasion. AR reduction in epithelial cells also accelerates these cells to differentiate into cancer stem-like cells and neuroendocrine cells, which are AR-negative PCa cells and inherently resistant to ADT treatments. Overall, understanding of the cross talk between tumor microenvironment and PCa at the molecular level may assist the development of novel therapeutic strategies against this disease. This review will provide a snapshot of AR’s action when the interaction of stromal cells and PCa cells occurs.

scholarly journals Organoid and Primary Epithelial Cultures of Human Prostate Show the Key Role of the Epithelial-to-Mesenchymal Transition in Generation of Tissue-Specific Stromal Cells

2021 ◽  
Author(s):  
V. M. Ryabov ◽  
A. O. Georgieva ◽  
M. A. Voskresensky ◽  
B. K. Komyakov ◽  
O. V. Rogoza ◽  
...  
Keyword(s):  
Prostate Cancer ◽  
Epithelial Cells ◽  
Stromal Cells ◽  
Epithelial To Mesenchymal Transition ◽  
Mesenchymal Cells ◽  
Spontaneous Transformation ◽  
Homogeneous Population ◽  
Tissue Specific ◽  
Mesenchymal Transition ◽  
Organoid Cultures

Abstract The prostate gland (PG) is a small organ in the male reproductive system that is currently the focus of biomedical research due to its leading position in morbidity and mortality from the tissue-specific prostate cancer (PC). The PG epithelium, which undergoes a cancerous transformation, is formed and functions under the control of androgens. At the beginning of the disease, epithelial cells produce an androgen receptor (AR) and are sensitive to androgen-deprivation therapy. However, such therapy inevitably leads to the transition of the disease to the castration-resistant prostate cancer (CRPC), which manifests itself in metastasis and rapid mortality. In CRPC, the cells of the prostate epithelium change their phenotype, that may be associated with AR mutation and loss the sensitivity to specific therapy. The mechanism of PG phenotypic transformation may be hidden in the interaction and formation of the stromal and epithelial cells, which are evident during the establishment of the primary cultures. The aim of this study was to investigate the generation of human PG stromal cells in primary stromal and organoid cultures. We found that, in contrast to the rapid appearance and formation of a homogeneous population of mesenchymal cells in primary stromal cultures of most tissues, human PG cell cultures are formed initially from epithelial cells. They appear in the second week of cultivation and produce cytokeratins (CKs). A homogeneous population of mesenchymal cells producing vimentin is formed only at the end of the fourth week of cultivation. It is accompanied by the disappearance of epithelial cells. At the same time, some epithelial cells simultaneously produce CKs and vimentin. In PG organoid cultures, there is often a concomitant growth of epithelial, but not mesenchymal, cells on culture plastic. During the cultivation of epithelial cells arising from the organoid cultures, they, like the cells of the primary epithelium, exhibit the ability to spontaneous transformation into mesenchymal cells and simultaneously produce CKs and vimentin. Our data suggest that in primary and organoid PG cultures, stromal cells can be formed from epithelium due to the epithelial-to-mesenchymal transition (EMT). The tendency of PG epithelium toward spontaneous EMT may contribute to the mechanism of high sensitivity of prostate tissue to malignant transformation and metastasis. Understanding this mechanism may contribute to the development of effective antitumor therapy of prostate cancer.

Stromal‐epithelial interactions in prostate cancer: Overexpression of PAGE4 in stromal cells inhibits the invasive ability of epithelial cells

2020 ◽  
Vol 121 (11) ◽  
pp. 4406-4418 ◽  
Author(s):  
Shui Fu ◽  
Tao Liu ◽  
Chengcheng Lv ◽  
Cheng Fu ◽  
Ruoheng Zeng ◽  
...  
Keyword(s):  
Prostate Cancer ◽  
Epithelial Cells ◽  
Stromal Cells ◽  
Invasive Ability

scholarly journals Human prostate stromal cells stimulate increased PSA production in DHEA-treated prostate cancer epithelial cells

2008 ◽  
Vol 111 (3-5) ◽  
pp. 240-246 ◽  
Author(s):  
Julia T. Arnold ◽  
Nora E. Gray ◽  
Ketzela Jacobowitz ◽  
Lavanya Viswanathan ◽  
Pui W. Cheung ◽  
...  
Keyword(s):  
Prostate Cancer ◽  
Epithelial Cells ◽  
Stromal Cells ◽  
Human Prostate

scholarly journals Mechanisms involved in the progression of androgen-independent prostate cancers: it is not only the cancer cell's fault.

2002 ◽  
pp. 61-73 ◽  
Author(s):  
J T Arnold ◽  
J T Isaacs
Keyword(s):  
Prostate Cancer ◽  
Extracellular Matrix ◽  
Epithelial Cells ◽  
Stromal Cells ◽  
Growth Control ◽  
Death Sentence ◽  
Control Mechanisms ◽  
Androgen Ablation ◽  
Androgen Independent

The acquisition of an androgen-independent phenotype by prostate cancer cells is presently a death sentence for patients. In order to have a realistic chance of changing this outcome, an understanding of what drives the progression to androgen independence is critical. We review here a working hypothesis based on the position that the development of androgen-independent epithelial cells is the result of a series of cellular and molecular events within the whole tissue that culminates in the loss of normal tissue-maintained growth control. This tissue includes the epithelial and stromal cells, the supporting extracellular matrix and circulating hormones. This review discusses the characteristics of these malignant cells, the role of stromal cells involved in growth and the differentiation of epithelial cells, and the role of the extracellular matrix as a mediator of the phenotypes of stromal and epithelial cells. In addition, environmental, neuroendocrine and immune factors that may contribute to disturbance of the fine balance of the epithelial-stromal-extracellular matrix connection are considered. While the goal of many therapeutic approaches to prostate cancer has been androgen ablation or targeting the androgen receptor (AR) of epithelial cells, these therapies become ineffective as the cells progress beyond dependence on androgen for growth control. Twenty years ago Sir David Smithers debated that cancer is the result of loss of tolerance within tissues and the organizational failure of normal growth-control mechanisms. This is precipitated by prolonged or abnormal demands for regeneration or repair, rather than of any inherent disorder peculiar to each of the individual components involved. He wrote "It is not the cell itself that is disorderly, but its relationship with the rest of the tissue". We have gained significantly large amounts of precise data on the effects of androgenic ablation on cancerous prostate cells and on the role of the AR in prostate cancer. The need has come to compile this information towards a perspective of dysregulation of tissue as a whole, and to develop experimental systems to address this broader perspective to find and develop therapies for treatment and prevention.

Time Series Analysis of Transmesothelial Invasion by Endometrial Stromal and Epithelial Cells Using Three-dimensional Confocal Microscopy

2001 ◽  
Vol 7 (S2) ◽  
pp. 580-581
Author(s):  
CA Witz ◽  
S Cho ◽  
VE Centonze ◽  
IA Montoya-Rodriguez ◽  
RS Schenken
Keyword(s):  
Epithelial Cells ◽  
Stromal Cells ◽  
Time Course ◽  
Three Dimensional ◽  
Collagen Iv ◽  
Mesothelial Cells ◽  
Endometrial Stromal Cells ◽  
Human Collagen ◽  
Endometrial Epithelial Cells

Using human peritoneal explants, we have previously demonstrated that endometrial stromal cells (ESCs) and endometrial epithelial cells (EECs) attach to intact mesothelium. Attachment occurs within one hour and mesothelial invasion occurs within 18 hours (Figure 1). We have also demonstrated that, in vivo, the mesothelium overlies a continuous layer of collagen IV (Col IV).More recently we have used CLSM, to study the mechanism and time course of ESC and EEC attachment and invasion through mesothelial monolayers. in these studies, CellTracker® dyes were used to label cells. Mesothelial cells were labeled with chloromethylbenzoylaminotetramethylrhodamine (CellTracker Orange). Mesothelial cells were then plated on human collagen IV coated, laser etched coverslips. Mesothelial cells were cultured to subconfluence. ESCs and EECs, labeled with chloromethylfluorscein diacetate (CellTracker Green) were plated on the mesothelial monolayers. Cultures were examined at 1, 6, 12 and 24 hours with simultaneous differential interference contrast and CLSM.

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