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Kashiwagi E, Shiota M, Naganuma H, Monji K, Imada K, Lee K, Matsumoto T, Takeuchi A, Inokuchi J, Eto M. Testosterone level in seminal vesicle fluid is a better indicator of erectile function than serum testosterone in patients with prostate cancer. Int J Urol 2022; 29:1155-1162. [PMID: 35717139 DOI: 10.1111/iju.14953] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2022] [Accepted: 05/19/2022] [Indexed: 11/30/2022]
Abstract
OBJECTIVES Semen comprises prostatic fluid and seminal vesicle fluid, and seminal vesicle fluid contains various factors such as prostaglandin E2 (PGE2), zinc, and testosterone, which play important roles in sperm motility. It is not known whether these factors affect erectile function. In this study, we investigated factors in seminal vesicle fluid that may affect erectile function. METHODS After receiving institutional review board approval, we collected seminal vesicle fluid samples from 134 Japanese patients with localized prostate cancer who underwent robot-assisted radical prostatectomy. We examined the relationship between the results of the Sexual Health Inventory for Men (SHIM), erection hardness score, an original questionnaire on the presence or absence of sexual desire, and concentrations of several factors in seminal vesicle fluid (testosterone, PGE2, transforming growth factor β1, and 8-hydroxy-2-deoxyguanosine), as well as the serum testosterone level. RESULTS Median participant age was 67 (range 51-77) years. Median concentrations were as follows: seminal vesicle testosterone 1.85 (range 0.17-4.32) ng/ml and serum testosterone 4.60 (range 1.75-10.82) ng/ml. When the SHIM score was divided into two groups, seminal vesicle testosterone concentration was significantly increased (p = 0.002) in participants with a SHIM score ≥17, and no significant difference was observed in serum testosterone levels (p = 0.661). Multivariate analysis revealed that seminal vesicle testosterone was significantly correlated with the SHIM score (≥17 vs. <17; odds ratio 2.137, 95% confidence interval 1.148-3.978, p = 0.016). CONCLUSIONS Testosterone levels in seminal vesicle fluid can reflect erectile function in patients with prostate cancer, suggesting that seminal vesicle testosterone is very important for male erectile function.
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Affiliation(s)
- Eiji Kashiwagi
- Department of Urology, Graduate School of Medical Science, Kyushu University, Fukuoka, Japan
| | - Masaki Shiota
- Department of Urology, Graduate School of Medical Science, Kyushu University, Fukuoka, Japan
| | - Hidekazu Naganuma
- Department of Urology, Graduate School of Medical Science, Kyushu University, Fukuoka, Japan
| | - Keisuke Monji
- Department of Urology, Graduate School of Medical Science, Kyushu University, Fukuoka, Japan
| | - Kenjiro Imada
- Department of Urology, Graduate School of Medical Science, Kyushu University, Fukuoka, Japan
| | - Ken Lee
- Department of Urology, Graduate School of Medical Science, Kyushu University, Fukuoka, Japan
| | - Takashi Matsumoto
- Department of Urology, Graduate School of Medical Science, Kyushu University, Fukuoka, Japan
| | - Ario Takeuchi
- Department of Urology, Graduate School of Medical Science, Kyushu University, Fukuoka, Japan
| | - Junichi Inokuchi
- Department of Urology, Graduate School of Medical Science, Kyushu University, Fukuoka, Japan
| | - Masatoshi Eto
- Department of Urology, Graduate School of Medical Science, Kyushu University, Fukuoka, Japan
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Cimadamore A, Montironi R, Serni S, Campi R. Seminal Vesicle Tumor Microenvironment. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2020; 1296:309-318. [PMID: 34185301 DOI: 10.1007/978-3-030-59038-3_19] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Abstract
Primary diseases of the seminal vesicles (SV) are very rare entities.Nonneoplastic lesions of the seminal vesicles include amyloidosis, inflammation, calcification and calculi, radiation-induced changes, and basal cell proliferation.Seminal vesicles are frequently involved by tumors originating elsewhere, in particular by prostatic adenocarcinoma, urothelial carcinoma, and rectal adenocarcinoma. On the contrary, primary tumors of the seminal vesicles are rare. Among these, the most common is seminal vesicle adenocarcinoma. To date, less than 100 cases have been reported in literature. Morphologically, primary SV adenocarcinoma is described as a papillary or sheetlike growth architecture, with trabecular and glandular patterns, composed by hobnail tumor cells, frequently with mucinous differentiation. On the contrary, mesenchymal tumors include benign lesions such as leiomyoma, schwannoma, fibroma, paraganglioma, solitary fibrous tumor, cystadenoma, and mixed epithelial and stromal tumors (MEST).Cystadenoma is a rare benign tumor, while MESTs are biphasic tumors with stromal and benign epithelial components. Histological features such as stromal atypia, mitotic activity, nuclear pleomorphism, and tumor necrosis distinct MEST in low-, intermediate-, and high-grade tumors.In recent years, multiple studies reported a link between tumorigenesis and tumor microenvironment. In this regard, the molecular mechanisms connecting prostate cancer (PCa) progression and the host microenvironment have been described and include extracellular matrix (ECM), myofibroblasts, cancer-associated fibroblasts (CAFs), neuroendocrine cells, adipose tissue, and the immune-modulatory cells. Of note, only one study evaluated the influence of seminal vesicle's tumor microenvironment (SVME) on prostate cancer cells so far. Besides, in vivo experiments in NOD/SCID mice clarified the influence of SVME on PCa progression. As such, the injection of PC3 cells into the prostate or the SV resulted in different tumor aggressiveness, and the incidence of retroperitoneal lymph node metastases was significantly higher in mice models receiving SV injection. These findings demonstrated that SVs (rather than the prostate) offer a stimulating tumor microenvironment for growth and invasion of prostate cancer cells.
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Affiliation(s)
- Alessia Cimadamore
- Institute of Pathological Anatomy and Histopathology, Polytechnic University of the Marche Region (Ancona), Ancona, Italy
| | - Rodolfo Montironi
- Institute of Pathological Anatomy and Histopathology, Polytechnic University of the Marche Region (Ancona), Ancona, Italy
| | - Sergio Serni
- Department of Urologic Robotic Surgery and Renal Transplantation, University of Florence, Careggi Hospital, Florence, Italy.,Department of Experimental and Clinical Medicine, University of Florence, Careggi Hospital, Florence, Italy
| | - Riccardo Campi
- Department of Urologic Robotic Surgery and Renal Transplantation, University of Florence, Careggi Hospital, Florence, Italy. .,Department of Experimental and Clinical Medicine, University of Florence, Careggi Hospital, Florence, Italy.
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Millena AC, Vo BT, Khan SA. JunD Is Required for Proliferation of Prostate Cancer Cells and Plays a Role in Transforming Growth Factor-β (TGF-β)-induced Inhibition of Cell Proliferation. J Biol Chem 2016; 291:17964-76. [PMID: 27358408 DOI: 10.1074/jbc.m116.714899] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2016] [Indexed: 12/16/2022] Open
Abstract
TGF-β inhibits proliferation of prostate epithelial cells. However, prostate cancer cells in advanced stages become resistant to inhibitory effects of TGF-β. The intracellular signaling mechanisms involved in differential effects of TGF-β during different stages are largely unknown. Using cell line models, we have shown that TGF-β inhibits proliferation in normal (RWPE-1) and prostate cancer (DU145) cells but does not have any effect on proliferation of prostate cancer (PC3) cells. We have investigated the role of Jun family proteins (c-Jun, JunB, and JunD) in TGF-β effects on cell proliferation. Jun family members were expressed at different levels and responded differentially to TGF-β treatment. TGF-β effects on JunD protein levels, but not mRNA levels, correlated with its effects on cell proliferation. TGF-β induced significant reduction in JunD protein in RWPE-1 and DU145 cells but not in PC3 cells. Selective knockdown of JunD expression using siRNA in DU145 and PC3 cells resulted in significant reduction in cell proliferation, and forced overexpression of JunD increased the proliferation rate. On the other hand, knockdown of c-Jun or JunB had little, if any, effect on cell proliferation; overexpression of c-Jun and JunB decreased the proliferation rate in DU145 cells. Further studies showed that down-regulation of JunD in response to TGF-β treatment is mediated via the proteasomal degradation pathway. In conclusion, we show that specific Jun family members exert differential effects on proliferation in prostate cancer cells in response to TGF-β, and inhibition of cell proliferation by TGF-β requires degradation of JunD protein.
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Affiliation(s)
- Ana Cecilia Millena
- From the Center for Cancer Research and Therapeutic Development, Clark Atlanta University, Atlanta, Georgia 30314
| | - BaoHan T Vo
- From the Center for Cancer Research and Therapeutic Development, Clark Atlanta University, Atlanta, Georgia 30314
| | - Shafiq A Khan
- From the Center for Cancer Research and Therapeutic Development, Clark Atlanta University, Atlanta, Georgia 30314
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Puri R, Kaur Bhatia R, Shankar Pandey R, Kumar Jain U, Katare OP, Madan J. Sigma-2 receptor ligand anchored telmisartan loaded nanostructured lipid particles augmented drug delivery, cytotoxicity, apoptosis and cellular uptake in prostate cancer cells. Drug Dev Ind Pharm 2016; 42:2020-2030. [DOI: 10.1080/03639045.2016.1190741] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Affiliation(s)
- Richa Puri
- Department of Pharmaceutics, Chandigarh College of Pharmacy, Mohali, Panjab, India
| | - Richa Kaur Bhatia
- Department of Pharmaceutics, Chandigarh College of Pharmacy, Mohali, Panjab, India
| | - Ravi Shankar Pandey
- SLT Institute of Pharmaceutical Sciences, Guru Ghasidas University, Bilaspur, India
| | - Upendra Kumar Jain
- Department of Pharmaceutics, Chandigarh College of Pharmacy, Mohali, Panjab, India
| | - Om Prakash Katare
- University Institute of Pharmaceutical Sciences, Panjab University, Chandigarh, India
| | - Jitender Madan
- Department of Pharmaceutics, Chandigarh College of Pharmacy, Mohali, Panjab, India
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Miyazaki A, Miyake H, Fujisawa M. Molecular mechanism mediating cytotoxic activity of axitinib in sunitinib-resistant human renal cell carcinoma cells. Clin Transl Oncol 2015; 18:893-900. [PMID: 26597115 DOI: 10.1007/s12094-015-1457-x] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2015] [Accepted: 11/16/2015] [Indexed: 01/27/2023]
Abstract
PURPOSE This study aimed to clarify the molecular mechanism mediating the cytotoxicity of axitinib, a selective inhibitor of the vascular endothelial growth factor receptor (VEGFR), in sunitinib-resistant renal cell carcinoma (RCC). METHODS In our previous study (Sakai et al. in BJU Int 112:E211-E220, 2013), a human RCC cell line, ACHN, resistant to sunitinib (ACHN/R), was developed from a parental cell line (ACHN/P). Differences in molecular phenotypes following treatment with sunitinib or axitinib between these two cell lines were compared. RESULTS ACHN/R showed an approximately fivefold higher IC50 of sunitinib than ACHN/P; however, there was no significant difference in the sensitivity to axitinib between these two cell lines. In ACHN/R, despite the lack of a difference in the phosphorylated (p)-Akt or STAT-3 expression between treatment with sunitinib and axitinib, the expression of p-p44/42 mitogen-activated protein kinase (MAPK) and p-VEGFR-2 after treatment with axitinib was markedly down-regulated compared with those after treatment with sunitinib. Furthermore, additional treatment of ACHN/R with an inhibitor of MAPK kinase significantly enhanced the cytotoxic activity of sunitinib, but not that of axitinib. In vivo growth of ACHN/R in nude mice after treatment with axitinib was significantly inhibited compared with that following treatment with sunitinib, accompanying the marked inhibition of angiogenesis. CONCLUSIONS Antitumor activity of axitinib in RCC cells even after the acquisition of resistance to sunitinib could be explained, at least in part, by the inactivation of p44/42 MAPK and VEGFR-2, which were persistently phosphorylated in sunitinib-resistant RCC cells under treatment with sunitinib.
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Affiliation(s)
- A Miyazaki
- Division of Urology, Kobe University Graduate School of Medicine, 7-5-1 Kusunoki-cho, Chuo-ku, Kobe, 650-0017, Japan
| | - H Miyake
- Division of Urology, Kobe University Graduate School of Medicine, 7-5-1 Kusunoki-cho, Chuo-ku, Kobe, 650-0017, Japan.
| | - M Fujisawa
- Division of Urology, Kobe University Graduate School of Medicine, 7-5-1 Kusunoki-cho, Chuo-ku, Kobe, 650-0017, Japan
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Nishikawa M, Miyake H, Fujisawa M. Enhanced Sensitivity to Sunitinib by Inhibition of Akt1 Expression in Human Castration-resistant Prostate Cancer PC3 Cells Both In Vitro and In Vivo. Urology 2015; 85:1215.e1-1215.e7. [PMID: 25917740 DOI: 10.1016/j.urology.2015.02.016] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2014] [Revised: 01/27/2015] [Accepted: 02/16/2015] [Indexed: 11/16/2022]
Abstract
OBJECTIVE To investigate whether antitumor activity of sunitinib is enhanced by silencing Akt1 in a human castration-resistant prostate cancer PC3 model. MATERIALS AND METHODS We initially established PC3 in which the expression vector containing a short hairpin ribonucleic acid targeting Akt1 was introduced (PC3/sh-Akt1). Changes in various phenotypes of PC3/sh-Akt1 after treatment with sunitinib were compared with those of PC3 transfected with control vector alone (PC3/C) both in vitro and in vivo. RESULTS When cultured in the standard medium, in vitro growth of PC3/sh-Akt1 was almost similar to that of PC3/C. However, compared with PC3/C, PC3/sh-Akt1 showed a significantly higher sensitivity to sunitinib, accompanying impaired phosphorylation of p44/42 mitogen-activated protein kinase, downregulation of Bcl-2, and upregulation of Bax. In addition, treatment with sunitinib significantly suppressed the migration ability of PC3/sh-Akt1 compared with that of PC3/C. In vivo, administration of sunitinib induced the significantly marked growth inhibition of PC3/sh-Akt1 compared with that of PC3/C, and apoptotic index in PC3/sh-Akt1 tumor in mice treated with sunitinib was significantly greater than that in PC3/C tumor. CONCLUSION Combined treatment with Akt1 inhibitor and sunitinib could be a promising therapeutic approach for men with castration-resistant prostate cancer.
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Affiliation(s)
- Masatomo Nishikawa
- Division of Urology, Kobe University Graduate School of Medicine, Kobe, Japan
| | - Hideaki Miyake
- Division of Urology, Kobe University Graduate School of Medicine, Kobe, Japan.
| | - Masato Fujisawa
- Division of Urology, Kobe University Graduate School of Medicine, Kobe, Japan
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Tei H, Miyake H, Fujisawa M. Enhanced sensitivity to sorafenib by inhibition of Akt1 expression in human renal cell carcinoma ACHN cells both in vitro and in vivo. Hum Cell 2015; 28:114-21. [PMID: 25862630 DOI: 10.1007/s13577-015-0112-8] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2014] [Accepted: 02/18/2015] [Indexed: 12/22/2022]
Abstract
To investigate whether antitumor activity of sorafenib, a potential molecular-targeted agent against RCC is enhanced by silencing Akt1 in a human RCC ACHN model. We established ACHN in which the expression vector containing short hairpin RNA targeting Akt1 was introduced (ACHN/sh-Akt1). Changes in several phenotypes of ACHN/sh-Akt1 following treatment with sorafenib were compared with those of ACHN transfected with control vector alone (ACHN/C) both in vitro and in vivo. When cultured in the standard medium, there was no significant difference in the in vitro growth pattern between ACHN/sh-Akt1 and ACHN/C; however, compared with ACHN/C, ACHN/sh-Akt1 showed a significantly higher sensitivity to sorafenib. Furthermore, treatment with Akt1 inhibitor, A-674563 also resulted in the significantly enhanced sensitivity of parental ACHN to sorafenib. Treatment of ACHN/sh-Akt1 with sorafenib, but not that of ACHN/C, induced marked downregulation of antiapoptotic proteins, including Bcl-2, Bcl-xL, and c-Myc. In vivo administration of sorafenib resulted in the significant growth inhibition of ACHN/sh-Akt1 tumor compared with that of ACHN/C tumor, and despite the lack of Ki-67 labeling index between ACHN/sh-Akt1 and ACHN/C tumors, apoptotic index in ACHN/sh-Akt1 tumor in mice treated with sorafenib was significantly greater than that in ACHN/C tumor. These findings suggest that combined treatment with Akt1 inhibitor and sorafenib could be a promising therapeutic approach for patients with advanced RCC.
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Affiliation(s)
- Hiromoto Tei
- Division of Urology, Kobe University Graduate School of Medicine, 7-5-1 Kusunoki-cho, Chuo-ku, Kobe, 650-0017, Japan
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8
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Characterization of mechanism involved in acquired resistance to sorafenib in a mouse renal cell cancer RenCa model. Clin Transl Oncol 2013; 16:801-6. [DOI: 10.1007/s12094-013-1151-9] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2013] [Accepted: 12/11/2013] [Indexed: 12/28/2022]
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Acquired resistance to temsirolimus in human renal cell carcinoma cells is mediated by the constitutive activation of signal transduction pathways through mTORC2. Br J Cancer 2013; 109:2389-95. [PMID: 24091619 PMCID: PMC3817337 DOI: 10.1038/bjc.2013.602] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Revised: 08/10/2013] [Accepted: 09/11/2013] [Indexed: 01/10/2023] Open
Abstract
BACKGROUND The objective of this study was to characterise the mechanism underlying acquired resistance to temsirolimus, an inhibitor of mammalian target of rapamycin (mTOR), in renal cell carcinoma (RCC). METHODS A parental human RCC cell line, ACHN (ACHN/P), was continuously exposed to increasing doses of up to 20 μM of temsirolimus, and a cell line resistant to temsirolimus (ACHN/R), showing a sixfold higher IC50 than that of ACHN/P, was developed. RESULTS Following treatment with temsirolimus, phosphorylation of S6 kinase in ACHN/P was markedly inhibited, whereas there was no detectable expression of phosphorylated S6 in ACHN/R before and after temsirolimus treatment. However, AKT and p44/42 mitogen-activated protein kinase (MAPK) were constitutively phosphorylated even after temsirolimus treatment in ACHN/R, but not in ACHN/P. There was no significant difference between the sensitivities of ACHN/P and ACHN/R to KU0063794, a dual inhibitor of mTOR complex 1 (mTORC1) and mTORC2. Similar sensitivities to temsirolimus in ACHN/P and ACHN/R could be achieved by additional treatment with specific inhibitors of AKT- and MAPK-signaling pathways. CONCLUSION The activation of signal transduction pathways via mTORC2, but not via mTORC1, may have an important role in the acquisition of a resistant phenotype to temsirolimus in RCC.
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Sakai I, Miyake H, Fujisawa M. Acquired resistance to sunitinib in human renal cell carcinoma cells is mediated by constitutive activation of signal transduction pathways associated with tumour cell proliferation. BJU Int 2013; 112:E211-20. [PMID: 23305097 DOI: 10.1111/j.1464-410x.2012.11655.x] [Citation(s) in RCA: 40] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Abstract
UNLABELLED WHAT'S KNOWN ON THE SUBJECT? AND WHAT DOES THE STUDY ADD?: Although there have been a few studies investigating the molecular mechanism mediating the acquisition of resistance to molecular-targeted agents, including sunitinib, by renal cell carcinoma (RCC) cells, this mechanism remains largely unclear. The maintenance of protein kinase activation during sunitinib treatment may be involved in the acquisition of a phenotype resistant to sunitinib in RCC, and additional treatment with agents targeting activated protein kinases could be a promising approach for overcoming resistance to sunitinib in RCC. OBJECTIVE To characterise the mechanism involved in the acquired resistance to sunitinib, a potential inhibitor of multiple receptor tyrosine kinases (RTKs), in renal cell carcinoma (RCC). MATERIALS AND METHODS A parental human RCC cell line, ACHN (ACHN/P), was continuously exposed to increasing doses of sunitinib, and a cell line resistant to sunitinib (ACHN/R), showing an ≈5-fold higher IC50 (concentration that reduces the effect by 50%) than that of ACHN/P, was developed. RESULTS ACHN/R appeared to acquire significant cross resistance to sorafenib; however, there were no significant differences in sensitivities to the Mammalian target of rapamycin inhibitors, temsirolimus and everolimus, between ACHN/P and ACHN/R. After sunitinib treatment, the expression levels of phosphorylated Akt and p44/42 mitogen-activated protein kinase in ACHN/P, but not those in ACHN/R, were significantly inhibited. RTK assay showed that treatment of ACHN/P with sunitinib resulted in the marked downregulation of several phosphorylated RTKs compared with that of ACHN/R. Additional treatment with a specific inhibitor of Akt significantly increased the sensitivity of ACHN/R to sunitinib, but not that of ACHN/P. There were no significant differences between in vivo growth patterns of ACHN/P and ACHN/R in mice before and after the administration of sunitinib; however, the proportion of cells positive for TUNEL (terminal deoxynucleotidyl transferase-mediated dUTP nick-end labelling) staining in ACHN/P tumour was significantly greater than that in ACHN/R tumour in mice treated with sunitinib. CONCLUSION The maintenance of protein kinase activation during sunitinib treatment may be involved in the acquisition of resistant phenotype to sunitinib in RCC cells.
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Affiliation(s)
- Iori Sakai
- Division of Urology, Kobe University Graduate School of Medicine, Kobe, Japan
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Jäämaa S, Laiho M. Maintenance of genomic integrity after DNA double strand breaks in the human prostate and seminal vesicle epithelium: the best and the worst. Mol Oncol 2012; 6:473-83. [PMID: 22762987 PMCID: PMC3439595 DOI: 10.1016/j.molonc.2012.06.001] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2012] [Revised: 06/07/2012] [Accepted: 06/08/2012] [Indexed: 01/23/2023] Open
Abstract
Prostate cancer is one of the most frequent cancer types in men, and its incidence is steadily increasing. On the other hand, primary seminal vesicle carcinomas are extremely rare with less than 60 cases reported worldwide. Therefore the difference in cancer incidence has been estimated to be more than a 100,000-fold. This is astonishing, as both tissues share similar epithelial structure and hormonal cues. Clearly, the two epithelia differ substantially in the maintenance of genomic integrity, possibly due to inherent differences in their DNA damage burden and DNA damage signaling. The DNA damage response evoked by DNA double strand breaks may be relevant, as their faulty repair has been implicated in the formation of common genomic rearrangements such as TMPRSS2-ERG fusions during prostate carcinogenesis. Here, we review DNA damaging processes of both tissues with an emphasis on inflammation and androgen signaling. We discuss how benign prostate and seminal vesicle epithelia respond to acute DNA damage, focusing on the canonical DNA double strand break-induced ATM-pathway, p53 and DNA damage induced checkpoints. We propose that the prostate might be more prone to the accumulation of genetic aberrations during epithelial regeneration than seminal vesicles due to a weaker ability to enforce DNA damage checkpoints.
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Affiliation(s)
- Sari Jäämaa
- Molecular Cancer Biology Program, University of Helsinki, Haartmaninkatu 8, 00290 Helsinki, Finland
| | - Marikki Laiho
- Molecular Cancer Biology Program, University of Helsinki, Haartmaninkatu 8, 00290 Helsinki, Finland
- The Sidney Kimmel Comprehensive Cancer Center, Department of Radiation Oncology and Molecular Radiation Sciences, Johns Hopkins University School of Medicine, 1550 Orleans Street, CRB II, Room 444, Baltimore, MD 21231, USA
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Kai F, Tanner K, King C, Duncan R. Myopodin isoforms alter the chemokinetic response of PC3 cells in response to different migration stimuli via differential effects on Rho-ROCK signaling pathways. Carcinogenesis 2012; 33:2100-7. [PMID: 22915763 DOI: 10.1093/carcin/bgs268] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023] Open
Abstract
The gene encoding myopodin, an actin binding protein, is commonly deleted in invasive, but not in indolent, prostate cancers. There are conflicting reports on the effects of myopodin expression on prostate cancer cell migration and invasion. The recent recognition that myopodin is expressed as four different isoforms further complicates our understanding of how this potentially important invasive prostate cancer biomarker affects tumor cell migration and invasion. We now show that myopodin affects the chemokinetic, rather than the chemotactic, properties of PC3 prostate cancer cells. Furthermore, all myopodin isoforms can either increase or decrease PC3 cell migration in response to different chemokinetic stimuli. These migration properties were reflected by differences in cell morphology and the relative dependence on Rho-ROCK signaling pathways induced by the environmental stimuli. Truncation analysis determined that a unique 9-residue C-terminal sequence in the shortest isoform and the conserved, PDZ domain-containing N-terminal region of the long isoforms both contribute to the ability of myopodin to alter the response of PC3 cells to chemokinetic stimuli. Matrigel invasion assays also indicated that myopodin primarily affects the migration, rather than the invasion, properties of PC3 cells. The correlation between loss of myopodin expression and invasive prostate cancer therefore reflects complex myopodin interactions with pathways that regulate the cellular migration response to diverse signals that may be present in a tumor microenvironment.
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Affiliation(s)
- FuiBoon Kai
- Department of Microbiology and Immunology, Dalhousie University, Halifax, Nova Scotia, Canada, B3H 4R2
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Ranzato E, Grosso S, Patrone M, Betta PG, Viarengo A, Biffo S. Spreading of mesothelioma cells is rapamycin-sensitive and requires continuing translation. J Cell Biochem 2010; 108:867-76. [PMID: 19718660 DOI: 10.1002/jcb.22316] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
The interaction of cancer cells with extracellular matrix (ECM) is important in metastasization. Here we identified the molecules of the ECM expressed by sarcomatous malignant mesothelioma, and their effect on adhesion and spreading. In addition, by analyzing the relationship between translation and attachment to matrix, we found that mesothelioma cells rely on continuing translation to efficiently attach to matrix, and rapamycin inhibition affects spreading and migration of cancer cells. Specifically, we found that sarcomatous cells produce high amounts of fibronectin, able to support the spreading of mesothelioma cells. Spreading of cancer cells on fibronectin does not require de novo transcription but is sensitive to cycloheximide, an inhibitor of protein synthesis. Next, we analyzed the involvement of the mammalian target of rapamycin (mTOR) pathway, a major pathway controlling translation. Cancer cells have a constitutively active mTOR pathway; surprisingly, inhibition of mTOR complex 1 (mTORC1) by rapamycin barely affects the global rate of translation and of initiation of translation, but deeply inhibits mesothelioma spreading on ECM. The effects of rapamycin and cycloheximide on spreading were observed in several mesothelioma cell lines, although with different magnitude. Overall, data suggest that adhesion and spreading of mesothelioma cells on ECM require the translation of pre-synthesized mRNAs, and mTORC1 activity. We speculate that mTORC1 activity is required either for the translation of specific mRNAs or for the direct modulation of cytoskeletal remodeling.
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Affiliation(s)
- Elia Ranzato
- Department of Environmental and Life Sciences, University of Piemonte Orientale, Viale T. Michel 11, 15121 Alessandria, Italy.
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Di JM, Pang J, Pu XY, Zhang Y, Liu XP, Fang YQ, Ruan XX, Gao X. Toll-like receptor 9 agonists promote IL-8 and TGF-beta1 production via activation of nuclear factor kappaB in PC-3 cells. ACTA ACUST UNITED AC 2009; 192:60-7. [PMID: 19596255 DOI: 10.1016/j.cancergencyto.2009.03.006] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2009] [Accepted: 03/04/2009] [Indexed: 01/28/2023]
Abstract
Chronic infection and resulting inflammation promote tumor development and progression, and Toll-like receptors (TLRs) may play an important role in this process. The aim of this study was to determine whether CpG oligonucleotides (CpG-ODN), which are Toll-like receptor 9 (TLR9) agonists, can promote inflammatory cytokines release from the prostate cancer PC-3 cells through activation of nuclear factor-kappaB (NF-kappaB). Flow cytometry, semiquantitative real-time reverse transcriptase-polymerase chain reaction, enzyme-linked immunosorbent assay, and immunofluorescence analysis were used to detect the transforming growth factor-beta1 (TGF-beta1) and interleukin-8 (IL-8) release and NF-kappaB activation in PC-3 cells after CpG-ODN stimulation. CpG-ODN promoted the expression and secretion of immunosuppressive cytokines TGF-beta1 and IL-8 from PC-3 cells. In addition, after CpG-ODN stimulation, NF-kappaB nuclear translocation was also observed in PC-3 cells, contributing to CpG-induced upregulation of IL-8 and TGF-beta1. Thus, TLR9 agonists may promote IL-8 and TGF-beta1 production in human prostate cancer cells through NF-kappaB activation.
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Affiliation(s)
- Jin-ming Di
- Department of Urology, Third Affiliated Hospital, Sun Yat-Sen University, Number 600 Tianhe Road, Guangzhou, China
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Yanagiuchi A, Miyake H, Nomi M, Takenaka A, Fujisawa M. Modulation of the microenvironment by growth factors regulates thein vivogrowth of skeletal myoblasts. BJU Int 2009; 103:1569-73. [DOI: 10.1111/j.1464-410x.2008.08318.x] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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