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Cao JY, Yin HS, Li HS, Yu XQ, Han X. Interleukin-27 augments the inhibitory effects of sorafenib on bladder cancer cells. ACTA ACUST UNITED AC 2017; 50:e6207. [PMID: 28746469 PMCID: PMC5520222 DOI: 10.1590/1414-431x20176207] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2017] [Accepted: 05/22/2017] [Indexed: 01/08/2023]
Abstract
Both sorafenib and interleukin-27 (IL-27) are antineoplastic drugs. This study aimed to investigate the synergistic effect of these two drugs on bladder cancer cells. HTB-9 and T24 cells were stimulated with IL-27 (50 ng/mL), sorafenib (2 μM) or the synergistic action of these two drugs. The cells without treatment acted as control. Cell proliferation, apoptosis and invasion were measured by bromodeoxyuridine assay, flow cytometry and modified Boyden chamber, respectively. Simultaneously, both modified Boyden chamber and scratch assay were used to assess cell migration. Finally, the phosphorylation levels of key kinases in the Akt/mechanistic target of rapamycin (mTOR)/mitogen-activated protein kinase (MAPK) pathway, and expression levels of matrix metalloproteinase (MMP)-2 and MMP-9 were detected by western blot analysis. Stimulation with IL-27 or sorafenib repressed proliferation, migration and invasion but promoted apoptosis, and the effects were all enhanced by the combination of these two drugs in HTB-9 cells. The effect of the combined treatment on bladder cancer cells was verified in T24 cells. Additionally, the phosphorylation levels of AKT, mTOR and MAPK as well as the expression levels of MMP-2 and MMP-9 were all decreased by a single treatment of IL-27 or sorafenib, and further decreased by the combined treatment of these two drugs. The combination of IL-27 and sorafenib inhibited proliferation, migration and invasion and promoted apoptosis of bladder cancer cells compared with mono-drug treatment. Additionally, the AKT/mTOR/MAPK pathway might be implicated in the functional effects by down-regulations of MMP-2 and MMP-9.
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Affiliation(s)
- J Y Cao
- Department of Urology, Binzhou Medical University Hospital, Binzhou, China
| | - H S Yin
- Department of Urology, Binzhou Medical University Hospital, Binzhou, China
| | - H S Li
- Department of Gastrointestinal Surgery, Binzhou Medical University Hospital, Binzhou, China
| | - X Q Yu
- Department of Gastrointestinal Surgery, Binzhou Medical University Hospital, Binzhou, China
| | - X Han
- Department of Gastrointestinal Surgery, Binzhou Medical University Hospital, Binzhou, China
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Sui M, Jiao A, Zhai H, Wang Y, Wang Y, Sun D, Li P. Upregulation of miR-125b is associated with poor prognosis and trastuzumab resistance in HER2-positive gastric cancer. Exp Ther Med 2017; 14:657-663. [PMID: 28672982 PMCID: PMC5488498 DOI: 10.3892/etm.2017.4548] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2015] [Accepted: 03/10/2017] [Indexed: 12/18/2022] Open
Abstract
Gastric cancer is one of the most common types of human cancer associated with a poor prognosis. MicroRNAs (miRs), a class of non-coding RNAs that are 18–25 nucleotides in length, act as key regulators in gene expression, and have been implicated in various human cancer types. miR-125b has been implicated in the malignant progression of gastric cancer. However, the association between miR-125b expression, clinicopathological characteristics and trastuzumab resistance in human epidermal growth factor receptor 2 (HER2)-positive gastric cancer remains unclear. In the current study, in situ hybridization data demonstrated that 81.8% (108/132) of gastric cancer tissues exhibited positive expression of miR-125b, while only 26.3% (10/38) of non-tumor gastric tissues were miR-125b-positive. Reverse transcription-quantitative polymerase chain reaction data indicated that the expression level of miR-125b was markedly increased in gastric cancer tissues compared with non-cancerous gastric tissues. Furthermore, the miR-125b level was significantly associated with tumor (T) stage, lymph node metastasis, distant metastasis and TNM stage of gastric cancer (P<0.05). Increased miR-125b expression predicated poor prognosis in patients with gastric cancer. For HER2-positive gastric cancer, the upregulation of miR-125b expression was significantly associated with advanced malignant progression, as well as a poor prognosis (P<0.05). Furthermore, data from the present study indicated that the increased miR-125b level was significantly associated with trastuzumab resistance in HER2-positive gastric cancer (P<0.05). Therefore, the current study suggests that miR-125b may become a potential biomarker for predicting prognoses and clinical outcomes in patients with HER2-positive gastric cancer that receive trastuzumab treatment.
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Affiliation(s)
- Minghua Sui
- Department of Oncology, Yuhuangding Hospital, Yantai, Shandong 264001, P.R. China
| | - Aihong Jiao
- Department of Oncology, Yuhuangding Hospital, Yantai, Shandong 264001, P.R. China
| | - Huiyuan Zhai
- Department of Gastrointestinal Surgery, Yuhuangding Hospital, Yantai, Shandong 264001, P.R. China
| | - Yan Wang
- Department of Hematology, Yuhuangding Hospital, Yantai, Shandong 264001, P.R. China
| | - Yong Wang
- Department of General Surgery, General Hospital of Ping Coal Group, Pingdingshan, Henan 467000, P.R. China
| | - Dengjun Sun
- Department of Oncology, Yuhuangding Hospital, Yantai, Shandong 264001, P.R. China
| | - Peng Li
- Department of Oncology, Yuhuangding Hospital, Yantai, Shandong 264001, P.R. China
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Expression of proteins FGFR3, PI3K, AKT, p21Waf1/Cip1 and cyclins D1 and D3 in patients with T1 bladder tumours: clinical implications and prognostic significance. Actas Urol Esp 2017; 41:172-180. [PMID: 27726892 DOI: 10.1016/j.acuro.2016.09.003] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2016] [Revised: 09/04/2016] [Accepted: 09/05/2016] [Indexed: 11/21/2022]
Abstract
OBJECTIVE To determine the differential protein expression of biomarkers FGFR3, PI3K (subunits PI3Kp110α, PI3KClassIII, PI3Kp85), AKT, p21Waf1/Cip1 and cyclins D1 and D3 in T1 bladder cancer versus healthy tissue and to study their potential role as early recurrence markers. MATERIAL AND METHOD This is a prospective study that employed a total of 67 tissue samples (55 cases of T1 bladder tumours that underwent transurethral resection and 12 cases of adjacent healthy mucosa). The protein expression levels were assessed using Western blot, and the means and percentages were compared using Student's t-test and the chi-squared test. The survival analysis was conducted using the Kaplan-Meier method and the log-rank test. RESULTS Greater protein expression was detected for FGFR3, PI3Kp110α, PI3KClassIII, cyclins D1 and D3 and p21Waf1/Cip1 in the tumour tissue than in the healthy mucosa. However, these differences were not significant for PI3Kp85 and AKT. We observed statistically significant correlations between early recurrence and PI3Kp110α, PI3KClassIII, PI3Kp85 and AKT (P=.003, P=.045, P=.050 and P=.028, respectively), between the tumour type (primary vs. recurrence) and cyclin D3 (P=.001), between the tumour size and FGFR3 (P=.035) and between multifocality and cyclin D1 (P=.039). The survival analysis selected FGFR3 (P=.024), PI3Kp110α (P=.014), PI3KClassIII (P=.042) and AKT (P=.008) as markers of early-recurrence-free survival. CONCLUSIONS There is an increase in protein expression levels in bladder tumour tissue. The overexpression of FGFR3, PI3Kp110α, PI3KClassIII and AKT is associated with increased early-recurrence-free survival for patients with T1 bladder tumours.
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54
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Simultaneous Targeting of Bladder Tumor Growth, Survival, and Epithelial-to-Mesenchymal Transition with a Novel Therapeutic Combination of Acetazolamide (AZ) and Sulforaphane (SFN). Target Oncol 2017; 11:209-27. [PMID: 26453055 DOI: 10.1007/s11523-015-0386-5] [Citation(s) in RCA: 38] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
BACKGROUND Current chemotherapies for advanced stage metastatic bladder cancer often result in severe side effects, and most patients become drug resistant over time. Thus, there is a need for more effective therapies with minimal side effects. OBJECTIVE The acid/base balance in tumor cells is essential for tumor cell functioning. We reasoned that simultaneous targeting of pH homeostasis and survival pathways would improve therapeutic efficacy. We evaluated the effectiveness of targeting pH homeostasis with the carbonic anhydrase inhibitor acetazolamide (AZ) in combination with the survival pathway targeting isothiocyanate sulforaphane (SFN) on the HTB-9 and RT112(H) human bladder tumor cell lines. MATERIALS AND METHODS We assessed viability, proliferation, and survival in vitro and effect on xenografts in vivo. RESULTS Combination AZ + SFN treatment induced dose-dependent suppression of growth, produced a potent anti-proliferative and anti-clonogenic effect, and induced apoptosis through caspase-3 and PARP activation. The anti-proliferative effect was corroborated by significant reductions in Ki-67, pHH3, cyclin D1, and sustained induction of the cell cycle inhibitors, p21 and p27. Both active p-Akt (Ser473) and p-S6 were significantly downregulated in the AZ + SFN combination treated cells with a concomitant inhibition of Akt kinase activity. The inhibitory effects of the AZ + SFN combination treatment showed similar efficacy as the dual PI3K/mTOR pathway inhibitor NVP-BEZ235, albeit at an expected higher dose. In terms of the effect on the metastatic potential of these bladder cancers, we found downregulated expression of carbonic anhydrase 9 (CA9) concomitant with reductions in both E-cadherin, N-cadherin, and vimentin proteins mitigating the epithelial-to-mesenchymal transition (EMT), suggesting negation of this program. CONCLUSION We suggest that reductions in these components could be linked with downregulation of the survival mediated Akt pathway and suggested an active role of the Akt pathway in bladder cancer. Altogether, our in vitro and pre-clinical model data support the potential use of an AZ + SFN combination for the treatment of bladder cancer.
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55
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Guo Q, Jian Z, Jia B, Chang L. CXCL7 promotes proliferation and invasion of cholangiocarcinoma cells. Oncol Rep 2016; 37:1114-1122. [PMID: 27959418 DOI: 10.3892/or.2016.5312] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2016] [Accepted: 11/08/2016] [Indexed: 11/06/2022] Open
Abstract
CXCL7 is an important chemoattractant cytokine, which signals through binding to its receptor CXCR2. Recent studies have demonstrated that the CXCL7/CXCR2 signaling plays a promoting role in several common malignancies, including lung, renal, colon, and breast cancer. However, the regulatory role of CXCL7, in cholangiocarcinoma, as well as the underlying mechanism, has not been previously reported. Herein, we found more positive expression of CXCL7 in cholangiocarcinoma tissues compared to adjacent non-tumor tissues. High CXCL7 expression was significantly correlated with poor differentiation, lymph node metastasis, vascular invasion and advanced clinical stage, but was not associated with age, gender, or tumor size. Besides, the expression of CXCL7 was significantly associated with the Ki67 expression, but not associated with CA199, AFP, or P53 expression in cholangiocarcinoma. Moreover, the overall survival of cholangiocarcinoma patients with high CXCL7 expression was significantly shorter than those with low CXCL7 expression. In vitro study indicated that CXCL7 and CXCR2 were also positively expressed in several common cholangiocarcinoma cell lines, including HuCCT1, HuH28, QBC939, EGI-1, OZ and WITT. SiRNA-induced inhibition of CXCL7 significantly reduced the proliferation and invasion of QBC939 cells. On the contrary, overexpression of CXCL7 markedly promoted these malignant phenotypes of QBC939 cells. Of note, the conditioned medium of CXCL7-overexpresing human hepatic stellate cells could also promote the proliferation and invasion of QBC939 cells, suggesting that CXCL7 may also play an oncogenic role in cholangiocarcinoma in a paracrine-dependent manner, not only in an autocrine-dependent manner. Molecular assay data suggested that the AKT signaling pathway was involved in the CXCL7-mediated malignant phenotypes of QBC939 cells. In summary, our study suggests that CXCL7 plays a promoting role in regulating the growth and metastasis of cholangiocarcinoma.
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Affiliation(s)
- Qian Guo
- Graduate College, Southern Medical University, Guangzhou, Guangdong 510515, P.R. China
| | - Zhixiang Jian
- Graduate College, Southern Medical University, Guangzhou, Guangdong 510515, P.R. China
| | - Baoqing Jia
- Department of Breast Neoplasms Surgery, People's Hospital of Inner Mongolia, Hohhot, Inner Mongolia 010017, P.R. China
| | - Liang Chang
- Department of Oncology Surgery, Inner Mongolia Baogang Hospital, Baotou, Inner Mongolia 404010, P.R. China
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Wang Y, Xu S, Wu Y, Zhang J. Cucurbitacin E inhibits osteosarcoma cells proliferation and invasion through attenuation of PI3K/AKT/mTOR signalling pathway. Biosci Rep 2016; 36:e00405. [PMID: 27653525 PMCID: PMC5100002 DOI: 10.1042/bsr20160165] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2016] [Revised: 09/07/2016] [Accepted: 09/20/2016] [Indexed: 12/31/2022] Open
Abstract
Cucurbitacin E (CuE), a potent member of triterpenoid family isolated from plants, has been confirmed as an antitumour agent by inhibiting proliferation, migration and metastasis in diverse cancer. However, the effects and mechanisms of CuE on osteosarcoma (OS) have not been well understood. The present study aimed to test whether CuE could inhibit growth and invasion of OS cells and reveal its underlying molecular mechanism. After various concentrations of CuE treatment, the anti-proliferative effect of CuE was assessed using the cell counting Kit-8 assay. Flow cytometry analysis was employed to measure apoptosis of OS cells. Cell cycle distribution was analysed by propidium iodide staining. Transwell assay was performed to evaluate the effect of CuE on invasion potential of OS cells. The protein levels were measured by western blot. In addition, the potency of CuE on OS cells growth inhibition was assessed in vivo Our results showed that CuE inhibited cell growth and invasion, induced a cell cycle arrest and triggered apoptosis and modulated the expression of cell growth, cell cycle and cell apoptosis regulators. Moreover, CuE inhibited the PI3K/Akt/mTOR pathway and epithelial-mesenchymal transition (EMT), which suppressed the invasion and metastasis of OS. In addition, we also found that CuE inhibited OS cell growth in vivo Taken together, our study demonstrated that CuE could inhibit OS tumour growth and invasion through inhibiting the PI3K/Akt/mTOR signalling pathway. Our findings suggest that CuE can be considered to be a promising anti-cancer agent for OS.
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Affiliation(s)
- Ying Wang
- Department of Acupuncture, Tuina and Traumatology, the Sixth People's Hospital Affiliated to Shanghai Jiaotong University, Shanghai 200233, China
| | - Shumei Xu
- Department of Hepatobiliary Surgery, Lanzhou General Hospital, Lanzhou Command of CPLA, Lanzhou 730050, China
| | - Yaochi Wu
- Department of Acupuncture, Tuina and Traumatology, the Sixth People's Hospital Affiliated to Shanghai Jiaotong University, Shanghai 200233, China
| | - Junfeng Zhang
- Department of Acupuncture, Tuina and Traumatology, the Sixth People's Hospital Affiliated to Shanghai Jiaotong University, Shanghai 200233, China
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Zhang H, Wang F, Mao C, Zhang Z, Fu S, Lu J, Zhai Z, Li R, Li S, Rodriguez R, Wang Z. Effect of combined treatment of radiation and tissue-specific recombinant oncolytic adenovirus on bladder cancer cells. Int J Radiat Biol 2016; 93:174-183. [PMID: 27600610 DOI: 10.1080/09553002.2017.1231942] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
PURPOSE Gene therapy combined with radiation has shown promising potential for the treatment of tumors. This paper aimed to clarify the synergistic effect of radiotherapy combined with the bladder cancer tissue-specific oncolytic adenovirus (Ad-PSCAE-UPII-E1A) on bladder cancer cells and to study the underlying synergy mechanisms of the combined treatment. MATERIALS AND METHODS The Adenovirus carrying E1A under control of UPII promoter and prostate stem cell antigen enhancer (PSCAE) were successfully constructed. The viability of bladder cancer cells BIU-87 and EJ was determined by MTT assay. The apoptotic assay was demonstrated by flow cytometry and TEM. Virus titer was determined by TCID50 assay, and proteins Mre11, Chk2-Thr68, and E1A were analyzed by Western blot method. RESULTS Oncolytic adenovirus combined with radiotherapy improved antitumor efficacy compared with the single treatment at a time and was X-ray dosage-dependent. When the adenovirus infection was scheduled at 24 h after irradiation, cancer cells had the lowest viability. Adenovirus and irradiation induced cell death through the caspase-3 related apoptotic pathway, and bladder cancer cells were arrested at the G1 (BIU-87) or S phase (EJ). Autophagic vacuoles were observed in bladder cancer cells treated with radiation and adenovirus. After irradiation, more virus particles were observed in the BIU-87 and EJ cells. However, by a TCID50 assay, there was no difference in virus titter between irradiated bladder cancer cells and unirradiated cells. The proteins Mre11, Chk2-Thr68 which involved in the DNA break repair pathway were decreased while γ-H2AX-Ser139 increased; at the same time, the E1A gene and the hexon proteins of oncolytic adenovirus were increased after irradiation. CONCLUSIONS Our results proved synergistic antitumor effect of adenovirus Ad-PSCAE-UPII-E1A and radiation, which might be a potential therapeutic strategy for bladder cancer.
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Affiliation(s)
- Hongjuan Zhang
- a Urologic Clinical Center of Gansu Province, Key Laboratory of Gansu Province, Institute of Urology, The Second Hospital of Lanzhou University , Lanzhou , China.,b The Second Hospital of Tianjin Medical University , Tian Jin , China
| | - Fang Wang
- c School of Basic Medical Sciences, Lanzhou University , Lanzhou , China
| | - Chunjie Mao
- d The General Hospital of Tianjin Medical University , Tian Jin , China
| | - Zuncheng Zhang
- b The Second Hospital of Tianjin Medical University , Tian Jin , China
| | - Shengjun Fu
- a Urologic Clinical Center of Gansu Province, Key Laboratory of Gansu Province, Institute of Urology, The Second Hospital of Lanzhou University , Lanzhou , China
| | - Jianzhong Lu
- a Urologic Clinical Center of Gansu Province, Key Laboratory of Gansu Province, Institute of Urology, The Second Hospital of Lanzhou University , Lanzhou , China
| | - Zhenxing Zhai
- a Urologic Clinical Center of Gansu Province, Key Laboratory of Gansu Province, Institute of Urology, The Second Hospital of Lanzhou University , Lanzhou , China
| | - Renju Li
- a Urologic Clinical Center of Gansu Province, Key Laboratory of Gansu Province, Institute of Urology, The Second Hospital of Lanzhou University , Lanzhou , China
| | - Shuwen Li
- a Urologic Clinical Center of Gansu Province, Key Laboratory of Gansu Province, Institute of Urology, The Second Hospital of Lanzhou University , Lanzhou , China
| | - Ron Rodriguez
- e Department of Urology , University of Texas Health Science Center , San Antonio , Texas , USA
| | - Zhiping Wang
- a Urologic Clinical Center of Gansu Province, Key Laboratory of Gansu Province, Institute of Urology, The Second Hospital of Lanzhou University , Lanzhou , China
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Pan LL, Wang XL, Luo XL, Liu SY, Xu P, Hu JF, Liu XH. Boehmenan, a Lignan From the Chinese Medicinal Plant Clematis armandii, Inhibits A431 Cell Growth via Blocking p70S6/S6 Kinase Pathway. Integr Cancer Ther 2016; 16:351-359. [PMID: 27698262 PMCID: PMC5759931 DOI: 10.1177/1534735416669803] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023] Open
Abstract
Previously, we have shown that boehmenan, a natural product isolated from the dried stem of Caulis clematidis armandii, exhibits various biological activities. The current study investigated the effects of boehmenan on the growth of human epidermoid carcinoma A431 cells. Cell viability and 50% inhibiting concentration (IC50) were assessed by CellTiter-Glo luminescent cell viability assay. Cell cycle arrest was measured by flow cytometry. Intracellular reactive oxygen species production and mitochondrial membrane potential (ΔΨm) collapse were analyzed by a fluorescence spectrophotometer. The activation of epidermal growth factor receptor signaling pathway was evaluated by Western blot. The results showed that boehmenan significantly inhibited the growth of A431 cells (IC50 = 1.6 µM) in a concentration- and time-dependent manner. This compound also blocked cell cycle progression at G2/M phase and modulated mitochondrial apoptosis-related proteins, as evidenced by upregulating p21, cleaved caspase-3, and cleaved poly (ADP-ribose) polymerase protein levels and by downregulating Bcl-2, pro-caspase-9 levels. In addition, boehmenan also markedly induced intracellular reactive oxygen species production and ΔΨm depolarization in a concentration-dependent manner. Furthermore, boehmenan-attenuated epidermal growth factor mediated the phosphorylation of signal transducer and activator of transcription 3 (STAT3), p70 ribosomal protein S6 kinase (p70S6)/S6 in a concentration-dependent manner. Taken together, our results suggest that boehmenan-mediated antiproliferative property in A431 cells was mediated partially by modulation of mitochondrial function and inhibition of STAT3 and p70S6 signal pathways.
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Affiliation(s)
| | | | | | | | - Peng Xu
- 1 Fudan University, Shanghai, China
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Han MH, Lee DS, Jeong JW, Hong SH, Choi IW, Cha HJ, Kim S, Kim HS, Park C, Kim GY, Moon SK, Kim WJ, Hyun Choi Y. Fucoidan Induces ROS-Dependent Apoptosis in 5637 Human Bladder Cancer Cells by Downregulating Telomerase Activity via Inactivation of the PI3K/Akt Signaling Pathway. Drug Dev Res 2016; 78:37-48. [PMID: 27654302 DOI: 10.1002/ddr.21367] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2016] [Accepted: 08/25/2016] [Indexed: 12/31/2022]
Abstract
Preclinical Research Fucoidan, a sulfated polysaccharide, is a compound found in various species of seaweed that has anti-viral, anti-bacterial, anti-oxidant, anti-inflammatory, and immunomodulatory activities; however, the underlying relationship between apoptosis and anti-telomerase activity has not been investigated. Here, we report that fucoidan-induced apoptosis in 5637 human bladder cancer cells was associated with an increase in the Bax/Bcl-2 ratio, the dissipation of the mitochondrial membrane potential (MMP, Δψm), and cytosolic release of cytochrome c from the mitochondria. Under the same experimental conditions, fucoidan-treatment decreased hTERT (human telomerase reverse transcriptase) expression and the transcription factors, c-myc and Sp1. This was accompanied by decreased telomerase activity. Fucoidan-treatment also suppressed activation of the PI3K/Akt signaling pathway. Inhibition of PI3K/Akt signaling enhanced fucoidan-induced apoptosis and anti-telomerase activity. Meanwhile, fucoidan treatment increased the generation of intracellular ROS, whereas the over-elimination of ROS by N-acetylcysteine, an anti-oxidant, attenuated fucoidan-induced apoptosis, inhibition of hTERT, c-myc, and Sp1 expression, and reversed fucoidan-induced inactivation of the PI3K/Akt signaling pathway. Collectively, these data indicate that the induction of apoptosis and the inhibition of telomerase activity by fucoidan are mediated via ROS-dependent inactivation of the PI3K/Akt pathway. Drug Dev Res 78 : 37-48, 2017. © 2016 Wiley Periodicals, Inc.
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Affiliation(s)
- Min Ho Han
- Natural Products Research Team, Marine Biodiversity Institute of Korea, Seocheon, 325-902, Republic of Korea
| | - Dae-Sung Lee
- Natural Products Research Team, Marine Biodiversity Institute of Korea, Seocheon, 325-902, Republic of Korea
| | - Jin-Woo Jeong
- Anti-Aging Research Center & Blue-Bio Industry RIC, Dongeui University, Busan, 614-714, Republic of Korea
| | - Su-Hyun Hong
- Department of Biochemistry, Dongeui University College of Korean Medicine, Busan, 614-052, Republic of Korea
| | - Il-Whan Choi
- Department of Microbiology, College of Medicine, Inje University, Busan, 608-756, Republic of Korea
| | - Hee-Jae Cha
- Departments of Parasitology and Genetics, College of Medicine, Kosin University, Busan, 602-702, Republic of Korea
| | - Suhkmann Kim
- Department of Chemistry, College of Natural Sciences, Pusan National University, Busan, 609-735, Republic of Korea
| | - Heui-Soo Kim
- Department of Biological Sciences, College of Natural Sciences, Pusan National University, Busan, 609-735, Republic of Korea
| | - Cheol Park
- Department of Molecular Biology, College of Natural Sciences and Human Ecology, Dongeui University, Busan, 614-714, Republic of Korea
| | - Gi-Young Kim
- Laboratory of Immunobiology, Department of Marine Life Sciences, Jeju National University, Jeju, 690-756, Republic of Korea
| | - Sung-Kwon Moon
- School of Food Science and Technology, Chung-Ang University, Ansung, 456-756, Republic of Korea
| | - Wun-Jae Kim
- Department of Urology, College of Medicine and Institute for Tumor Research, Chungbuk National University, Cheongju, 28644, Republic of Korea
| | - Yung Hyun Choi
- Natural Products Research Team, Marine Biodiversity Institute of Korea, Seocheon, 325-902, Republic of Korea.,Anti-Aging Research Center & Blue-Bio Industry RIC, Dongeui University, Busan, 614-714, Republic of Korea.,Department of Biochemistry, Dongeui University College of Korean Medicine, Busan, 614-052, Republic of Korea
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Varinot J, Furudoï A, Roupret M, Compérat E. [Update on molecular classifications and new histological classification of bladder cancer]. Prog Urol 2016; 26:600-607. [PMID: 27663304 DOI: 10.1016/j.purol.2016.08.020] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2016] [Revised: 08/19/2016] [Accepted: 08/22/2016] [Indexed: 11/25/2022]
Abstract
OBJECTIVE Comment the new WHO histological classification of tumors of the urinary system and male genital organs 2016 and expose the state of art about urothelial carcinogenesis and molecular modifications of bladder cancer, with the consequences on the treatments. MATERIAL AND METHOD A systematic review of the literature search was performed from the data base PubMed, focused on the following keywords: "bladder cancer", "molecular", "subtypes". RESULTS The new WHO histological classification of tumors of the urinary system 2016 confirm the importance of pathology in determining the care of patients, especially the grade, the histological type and the infiltration, while taking into account the difficulties. In 2014, the Cancer Genome Atlas reported genetic modifications of bladder cancer. Recently, several studies explored molecular anomalies of bladder cancer and elaborated molecular classifications, analyzing their predictive value. According to the groups, different molecular subtype had been defined: Urobasal A, Urobasal B, genomically unstable, infiltrated, squamous cell carcinoma-like and p53-like luminal bladder cancers. This latter subgroup seems to be chemoresistant. CONCLUSIONS The molecular biology and classifications allow a better understanding of bladder cancer and could complete in near future histological data to improve patient management.
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Affiliation(s)
- J Varinot
- Service d'anatomie et cytologie pathologiques, hôpital La Pitié-Salpêtrière, UPMC Paris VI, 47-83, boulevard de l'Hopital, 75013 Paris, France.
| | - A Furudoï
- Service d'anatomie et cytologie pathologiques, hôpital La Pitié-Salpêtrière, UPMC Paris VI, 47-83, boulevard de l'Hopital, 75013 Paris, France
| | - M Roupret
- Service d'urologie, hôpital La Pitié-Salpêtrière, UPMC Paris VI, 47-83, boulevard de l'Hopital, 75013 Paris, France
| | - E Compérat
- Service d'anatomie et cytologie pathologiques, hôpital La Pitié-Salpêtrière, UPMC Paris VI, 47-83, boulevard de l'Hopital, 75013 Paris, France
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Xiao J, Lin HY, Zhu YY, Zhu YP, Chen LW. MiR-126 regulates proliferation and invasion in the bladder cancer BLS cell line by targeting the PIK3R2-mediated PI3K/Akt signaling pathway. Onco Targets Ther 2016; 9:5181-93. [PMID: 27578985 PMCID: PMC5001672 DOI: 10.2147/ott.s105198] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022] Open
Abstract
Objective To assess whether microRNA-126 (miR-126) targets phosphatidylinositol 3-kinase regulatory subunit beta (PIK3R2) and to determine the potential roles of miR-126 in regulating proliferation and invasion via the PIK3R2-mediated phosphatidylinositol 3 kinase (PI3K)-protein kinase B (Akt) signaling pathway in the human bladder BLS cell line. Materials and methods A recombinant lentivirus (Lv) vector expressing miR-216 (Lv-miR-126) was successfully constructed, and Lv-miR-126 and Lv vector were transfected into the BLS cell line. A direct regulatory relationship between miR-126 and the PIK3R2 gene was demonstrated by luciferase reporter assays. To determine whether PIK3R2 directly participates in the miR-126-induced effects in BLS cells, anti-miR-126 and a PIK3R2 small interfering RNA (siRNA) were transfected into the BLS cells. Quantitative real-time polymerase chain reaction was used to measure miR-126 and PIK3R2 expressions. 5-Ethynyl-2′-deoxyuridine and colony formation assays to assess cell proliferation, flow cytometry for cell apoptosis and cell cycle analysis, Transwell assays for cell migration and invasion, and Western blots for PIK3R2, PI3K, phosphorylated PI3K (p-PI3K), Akt, and phosphorylated Akt (p-Akt) protein expressions were performed. Results Lv-miR-126 significantly enhanced the relative expression of miR-126 in the BLS cells after infection (P<0.0001). MiR-126 overexpression inhibited the proliferation, cloning, migration, and invasion of BLS cells, promoted cell apoptosis, and induced S phase arrest (all P<0.05). PIK3R2, p-PI3K, and p-Akt protein expressions were significantly decreased in the BLS cells infected with Lv-miR-126. Luciferase assays showed that miR-126 significantly inhibited the PIK3R2 3′ untranslated region (3′UTR) luciferase reporter activity (P<0.05). The anti-miR-126 + PIK3R2 siRNA group had significantly decreased PIK3R2, p-PI3K, and p-Akt expressions compared with those of anti-miR-126 alone, as well as significantly decreased proliferation, invasion, and metastasis and increased apoptosis compared with the anti-miR-126 group (all P<0.05). Additionally, proliferation, invasion, and metastasis were significantly increased, and cell apoptosis was decreased compared with the PIK3R2 siRNA group (all P<0.05). Conclusion Overexpression of miR-126 negatively regulated the target gene PIK3R2 and further inhibited the PI3K/Akt signaling pathway, thereby inhibiting proliferation, migration, and invasion and promoting apoptosis in BLS cells.
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Affiliation(s)
- Jun Xiao
- Department of Urology, Anhui Provincial Hospital, Anhui Medical University, Hefei
| | - Huan-Yi Lin
- Department of Urology, First Affiliated Hospital of Sun Yat-Sen University, Guangzhou
| | - Yuan-Yuan Zhu
- Clinical Laboratory, Anhui Provincial Hospital, Anhui Medical University, Hefei, People's Republic of China
| | - Yu-Ping Zhu
- Department of Urology, Anhui Provincial Hospital, Anhui Medical University, Hefei
| | - Ling-Wu Chen
- Department of Urology, First Affiliated Hospital of Sun Yat-Sen University, Guangzhou
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Alayev A, Salamon RS, Schwartz NS, Berman AY, Wiener SL, Holz MK. Combination of Rapamycin and Resveratrol for Treatment of Bladder Cancer. J Cell Physiol 2016; 232:436-446. [DOI: 10.1002/jcp.25443] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2016] [Accepted: 05/24/2016] [Indexed: 01/10/2023]
Affiliation(s)
- Anya Alayev
- Department of Biology; Yeshiva University; New York New York
| | | | | | - Adi Y. Berman
- Department of Biology; Yeshiva University; New York New York
| | - Sara L. Wiener
- Department of Biology; Yeshiva University; New York New York
| | - Marina K. Holz
- Department of Biology; Yeshiva University; New York New York
- Department of Molecular Pharmacology, Albert Einstein Cancer Center; Albert Einstein College of Medicine; Bronx New York
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63
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Pinto-Leite R, Arantes-Rodrigues R, Sousa N, Oliveira PA, Santos L. mTOR inhibitors in urinary bladder cancer. Tumour Biol 2016; 37:11541-11551. [PMID: 27235118 DOI: 10.1007/s13277-016-5083-1] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2016] [Accepted: 05/15/2016] [Indexed: 02/07/2023] Open
Abstract
Despite the great scientific advances that have been made in cancer treatment, there is still much to do, particularly with regard to urinary bladder cancer. Some of the drugs used in urinary bladder cancer treatment have been in use for more than 30 years and show reduced effectiveness and high recurrence rates. There have been several attempts to find new and more effective drugs, to be used alone or in combination with the drugs already in use, in order to overcome this situation.The biologically important mammalian target of rapamycin (mTOR) pathway is altered in cancer and mTOR inhibitors have raised many expectations as potentially important anticancer drugs. In this article, the authors will review the mTOR pathway and present their experiences of the use of some mTOR inhibitors, sirolimus, everolimus and temsirolimus, in isolation and in conjunction with non-mTOR inhibitors cisplatin and gemcitabine, on urinary bladder tumour cell lines. The non-muscle-invasive cell line, 5637, is the only one that exhibits a small alteration in the mTOR and AKT phosphorylation after rapalogs exposure. Also, there was a small inhibition of cell proliferation. With gemcitabine plus everolimus or temsirolimus, the results were encouraging as a more effective response was noticed with both combinations, especially in the 5637 and T24 cell lines. Cisplatin associated with everolimus or temsirolimus also gave promising results, as an antiproliferative effect was observed when the drugs were associated, in particular on the 5637 and HT1376 cell lines. Everolimus or temsirolimus in conjunction with gemcitabine or cisplatin could have an important role to play in urinary bladder cancer treatment, depending on the tumour grading.
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Affiliation(s)
- R Pinto-Leite
- Genetic Service, Cytogenetic Laboratory, Hospital Center of Trás-os-Montes and Alto Douro, Vila Real, Portugal. .,Experimental Pathology and Therapeutics Group, Portuguese Institute of Oncology, Porto, Portugal.
| | - R Arantes-Rodrigues
- Centre for the Research and Technology of Agro-Environmental and Biological Sciences (CITAB), University of Trás-os-Montes and Alto Douro, Vila Real, Portugal.,QOPNA, Mass Spectrometry Center, Department of Chemistry, University of Aveiro, Aveiro, Portugal.,Institute for Research and Innovation in Health (I3S), Porto, Portugal
| | - Nuno Sousa
- Health School, University Fernando Pessoa, Porto, Portugal
| | - P A Oliveira
- Experimental Pathology and Therapeutics Group, Portuguese Institute of Oncology, Porto, Portugal
| | - L Santos
- Experimental Pathology and Therapeutics Group, Portuguese Institute of Oncology, Porto, Portugal.,Health School, University Fernando Pessoa, Porto, Portugal.,Medical Oncology Department, Portuguese Institute of Oncology, Porto, Portugal
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64
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Roa I, Garcia H, Game A, de Toro G, de Aretxabala X, Javle M. Somatic Mutations of PI3K in Early and Advanced Gallbladder Cancer. J Mol Diagn 2016; 18:388-394. [DOI: 10.1016/j.jmoldx.2015.12.003] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2015] [Revised: 12/02/2015] [Accepted: 12/11/2015] [Indexed: 02/06/2023] Open
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65
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Makboul R, Refaiy A, Abdelkawi IF, Hameed D, Elderwy AA, Shalaby MM, Merseburger AS, Hussein MRA. Alterations of mTOR and PTEN protein expression in schistosomal squamous cell carcinoma and urothelial carcinoma. Pathol Res Pract 2016; 212:385-92. [DOI: 10.1016/j.prp.2016.02.008] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/05/2015] [Revised: 12/02/2015] [Accepted: 02/01/2016] [Indexed: 12/23/2022]
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66
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Oliveira PA, Gil da Costa RM, Vasconcelos-Nóbrega C, Arantes-Rodrigues R, Pinto-Leite R. Challenges within vitroandin vivoexperimental models of urinary bladder cancer for novel drug discovery. Expert Opin Drug Discov 2016; 11:599-607. [DOI: 10.1080/17460441.2016.1174690] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
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67
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Mohan CD, Srinivasa V, Rangappa S, Mervin L, Mohan S, Paricharak S, Baday S, Li F, Shanmugam MK, Chinnathambi A, Zayed ME, Alharbi SA, Bender A, Sethi G, Basappa, Rangappa KS. Trisubstituted-Imidazoles Induce Apoptosis in Human Breast Cancer Cells by Targeting the Oncogenic PI3K/Akt/mTOR Signaling Pathway. PLoS One 2016; 11:e0153155. [PMID: 27097161 PMCID: PMC4838272 DOI: 10.1371/journal.pone.0153155] [Citation(s) in RCA: 98] [Impact Index Per Article: 12.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2015] [Accepted: 03/24/2016] [Indexed: 12/31/2022] Open
Abstract
Overactivation of PI3K/Akt/mTOR is linked with carcinogenesis and serves a potential molecular therapeutic target in treatment of various cancers. Herein, we report the synthesis of trisubstituted-imidazoles and identified 2-chloro-3-(4, 5-diphenyl-1H-imidazol-2-yl) pyridine (CIP) as lead cytotoxic agent. Naïve Base classifier model of in silico target prediction revealed that CIP targets RAC-beta serine/threonine-protein kinase which comprises the Akt. Furthermore, CIP downregulated the phosphorylation of Akt, PDK and mTOR proteins and decreased expression of cyclin D1, Bcl-2, survivin, VEGF, procaspase-3 and increased cleavage of PARP. In addition, CIP significantly downregulated the CXCL12 induced motility of breast cancer cells and molecular docking calculations revealed that all compounds bind to Akt2 kinase with high docking scores compared to the library of previously reported Akt2 inhibitors. In summary, we report the synthesis and biological evaluation of imidazoles that induce apoptosis in breast cancer cells by negatively regulating PI3K/Akt/mTOR signaling pathway.
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Affiliation(s)
| | - V Srinivasa
- Laboratory of Chemical Biology, Department of Chemistry, Bangalore University, Central College Campus, Palace Road, Bangalore 560001, India
| | - Shobith Rangappa
- Frontier Research Center for Post-Genome Science and Technology, Hokkaido University, Sapporo 060-0808, Japan
| | - Lewis Mervin
- Centre for Molecular Informatics, Department of Chemistry, University of Cambridge, Lensfield Road, Cambridge, United Kingdom
| | - Surender Mohan
- Laboratory of Molecular Biology and Genetic Engineering, School of Biotechnology, Jawaharlal Nehru University, New Delhi 110067, India
| | - Shardul Paricharak
- Centre for Molecular Informatics, Department of Chemistry, University of Cambridge, Lensfield Road, Cambridge, United Kingdom.,Division of Medicinal Chemistry, Leiden Academic Centre for Drug Research, Leiden University, P.O. Box 9502, 2300 RA Leiden, The Netherlands
| | - Sefer Baday
- Centre for Molecular Informatics, Department of Chemistry, University of Cambridge, Lensfield Road, Cambridge, United Kingdom.,Applied Informatics Department, Informatics Institute, Istanbul Technical University, 34469, Istanbul, Turkey
| | - Feng Li
- Department of Pharmacology, Yong Loo Lin School of Medicine, National University of Singapore, Singapore, Singapore
| | - Muthu K Shanmugam
- Department of Pharmacology, Yong Loo Lin School of Medicine, National University of Singapore, Singapore, Singapore
| | - Arunachalam Chinnathambi
- Department of Botany and Microbiology, College of Science, King Saud University, Riyadh -11451, Kingdom of Saudi Arabia
| | - M E Zayed
- Department of Botany and Microbiology, College of Science, King Saud University, Riyadh -11451, Kingdom of Saudi Arabia
| | - Sulaiman Ali Alharbi
- Department of Botany and Microbiology, College of Science, King Saud University, Riyadh -11451, Kingdom of Saudi Arabia
| | - Andreas Bender
- Centre for Molecular Informatics, Department of Chemistry, University of Cambridge, Lensfield Road, Cambridge, United Kingdom
| | - Gautam Sethi
- Department of Pharmacology, Yong Loo Lin School of Medicine, National University of Singapore, Singapore, Singapore.,Department of Botany and Microbiology, College of Science, King Saud University, Riyadh -11451, Kingdom of Saudi Arabia.,School of Biomedical Sciences, CHIRI Biosciences Research Precinct, Curtin University, Western Australia 6009, Australia
| | - Basappa
- Laboratory of Chemical Biology, Department of Chemistry, Bangalore University, Central College Campus, Palace Road, Bangalore 560001, India
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68
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Gupta S, Hau AM, Al-Ahmadie HA, Harwalkar J, Shoskes AC, Elson P, Beach JR, Hussey GS, Schiemann WP, Egelhoff TT, Howe PH, Hansel DE. Transforming Growth Factor-β Is an Upstream Regulator of Mammalian Target of Rapamycin Complex 2-Dependent Bladder Cancer Cell Migration and Invasion. THE AMERICAN JOURNAL OF PATHOLOGY 2016; 186:1351-60. [PMID: 26988652 DOI: 10.1016/j.ajpath.2016.01.008] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/30/2015] [Revised: 12/20/2015] [Accepted: 01/14/2016] [Indexed: 12/12/2022]
Abstract
Our prior work identified the mammalian target of rapamycin complex 2 (mTORC2) as a key regulator of bladder cancer cell migration and invasion, although upstream growth factor mediators of this pathway in bladder cancer have not been well delineated. We tested whether transforming growth factor (TGF)-β, which can function as a promotility factor in bladder cancer cells, could regulate mTORC2-dependent bladder cancer cell motility and invasion. In human bladder cancers, the highest levels of phosphorylated SMAD2, a TGF-β signaling intermediate, were present in high-grade invasive bladder cancers and associated with more frequent recurrence and decreased disease-specific survival. Increased expression of TGF-β isoforms, receptors, and signaling components was detected in invasive high-grade bladder cancer cells that expressed Vimentin and lacked E-cadherin. Application of TGF-β induced phosphorylation of the Ser473 residue of AKT, a selective target of mTORC2, in a SMAD2- and SMAD4-independent manner and increased bladder cancer cell migration in a modified scratch wound assay and invasion through Matrigel. Inhibition of TGF-β receptor I using SB431542 ablated TGF-β-induced migration and invasion. A similar effect was seen when Rictor, a key mTORC2 component, was selectively silenced. Our results suggest that TGF-β can induce bladder cancer cell invasion via mTORC2 signaling, which may be applicable in most bladder cancers.
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Affiliation(s)
- Sounak Gupta
- Department of Pathology, University of California San Diego, La Jolla, California
| | - Andrew M Hau
- Department of Pathology, University of California San Diego, La Jolla, California
| | - Hikmat A Al-Ahmadie
- Department of Pathology, Memorial Sloan Kettering Cancer Center, New York, New York
| | | | | | - Paul Elson
- Department of Quantitative Health Sciences, Cleveland Clinic, Cleveland, Ohio
| | - Jordan R Beach
- Department of Cellular and Molecular Biology, Cleveland Clinic, Cleveland, Ohio
| | - George S Hussey
- Department of Biochemistry, Medical University of South Carolina, Charleston, South Carolina
| | - William P Schiemann
- Department of General Medical Sciences-Oncology, Case Western Reserve University, Cleveland, Ohio
| | - Thomas T Egelhoff
- Department of Cellular and Molecular Biology, Cleveland Clinic, Cleveland, Ohio
| | - Philip H Howe
- Department of Biochemistry, Medical University of South Carolina, Charleston, South Carolina
| | - Donna E Hansel
- Department of Pathology, University of California San Diego, La Jolla, California.
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69
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Gab1 is essential for membrane translocation, activity and integrity of mTORCs after EGF stimulation in urothelial cell carcinoma. Oncotarget 2015; 6:1478-89. [PMID: 25596749 PMCID: PMC4359308 DOI: 10.18632/oncotarget.2756] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2014] [Accepted: 11/16/2014] [Indexed: 11/30/2022] Open
Abstract
Urothelial carcinoma is the most common type of malignancy in long-term dialysis patients and kidney transplant recipients in Taiwan. mTORCs (mammalian target of rapamycin complexes) and EGF are important in urothelial carcinoma. To identify the regulation of mTORCs upon EGF stimulation is necessary. mTOR integrates signals from growth factors via mTOR Complex 1 (mTORC1) and mTOR Complex 2 (mTORC2). The mechanism of mTORC1 action has been widely studied; however, the regulation of mTORC2 has not been well studied. Here, we demonstrate that Gab1 is an important upstream regulator in EGF-mediated activation of mTORCs. In our study, we confirm that mTORCs translocate from the cytoplasm to the plasma membrane via the PH domain of Gab1 upon EGF stimulation. Moreover, Gab1 associates with mTORCs. This association stabilizes the integrity of mTORCs and induces mTORC activity. Compared to normal bladder tissue, the expression of Gab1 and activity of mTORCs are elevated in urothelial carcinoma. Collectively, our results suggest that Gab1 is an essential regulator of the EGF-mediated mTORC pathways and may potentially be used as a biomarker for urothelial carcinoma to predict diagnosis and drug response.
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70
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Costa C, Pereira S, Lima L, Peixoto A, Fernandes E, Neves D, Neves M, Gaiteiro C, Tavares A, Gil da Costa RM, Cruz R, Amaro T, Oliveira PA, Ferreira JA, Santos LL. Abnormal Protein Glycosylation and Activated PI3K/Akt/mTOR Pathway: Role in Bladder Cancer Prognosis and Targeted Therapeutics. PLoS One 2015; 10:e0141253. [PMID: 26569621 PMCID: PMC4646664 DOI: 10.1371/journal.pone.0141253] [Citation(s) in RCA: 54] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2015] [Accepted: 10/06/2015] [Indexed: 01/01/2023] Open
Abstract
Muscle invasive bladder cancer (MIBC, stage ≥T2) is generally associated with poor prognosis, constituting the second most common cause of death among genitourinary tumours. Due to high molecular heterogeneity significant variations in the natural history and disease outcome have been observed. This has also delayed the introduction of personalized therapeutics, making advanced stage bladder cancer almost an orphan disease in terms of treatment. Altered protein glycosylation translated by the expression of the sialyl-Tn antigen (STn) and its precursor Tn as well as the activation of the PI3K/Akt/mTOR pathway are cancer-associated events that may hold potential for patient stratification and guided therapy. Therefore, a retrospective design, 96 bladder tumours of different stages (Ta, T1-T4) was screened for STn and phosphorylated forms of Akt (pAkt), mTOR (pmTOR), S6 (pS6) and PTEN, related with the activation of the PI3K/Akt/mTOR pathway. In our series the expression of Tn was residual and was not linked to stage or outcome, while STn was statically higher in MIBC when compared to non-muscle invasive tumours (p = 0.001) and associated decreased cancer-specific survival (log rank p = 0.024). Conversely, PI3K/Akt/mTOR pathway intermediates showed an equal distribution between non-muscle invasive bladder cancer (NMIBC) and MIBC and did not associate with cancer-specif survival (CSS) in any of these groups. However, the overexpression of pAKT, pmTOR and/or pS6 allowed discriminating STn-positive advanced stage bladder tumours facing worst CSS (p = 0.027). Furthermore, multivariate Cox regression analysis revealed that overexpression of PI3K/Akt/mTOR pathway proteins in STn+ MIBC was independently associated with approximately 6-fold risk of death by cancer (p = 0.039). Mice bearing advanced stage chemically-induced bladder tumours mimicking the histological and molecular nature of human tumours were then administrated with mTOR-pathway inhibitor sirolimus (rapamycin). This decreased the number of invasive lesions and, concomitantly, the expression of STn and also pS6, the downstream effector of the PI3K/Akt/mTOR pathway. In conclusion, STn was found to be marker of poor prognosis in bladder cancer and, in combination with PI3K/Akt/mTOR pathway evaluation, holds potential to improve the stratification of stage disease. Animal experiments suggest that mTOR pathway inhibition could be a potential therapeutic approach for this specific subtype of MIBC.
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Affiliation(s)
- Céu Costa
- Experimental Pathology and Therapeutics Group, Portuguese Institute of Oncology, Rua Dr. António Bernardino de Almeida, Porto, Portugal
- ICBAS, Abel Salazar Biomedical Sciences Institute, University of Porto, Porto, Portugal
- Health Sciences Faculty of University Fernando Pessoa, Porto, Portugal
| | - Sofia Pereira
- Experimental Pathology and Therapeutics Group, Portuguese Institute of Oncology, Rua Dr. António Bernardino de Almeida, Porto, Portugal
- ICBAS, Abel Salazar Biomedical Sciences Institute, University of Porto, Porto, Portugal
- Health Sciences Faculty of University Fernando Pessoa, Porto, Portugal
| | - Luís Lima
- Experimental Pathology and Therapeutics Group, Portuguese Institute of Oncology, Rua Dr. António Bernardino de Almeida, Porto, Portugal
- Nucleo de Investigação e Informação em Farmácia - Centro de Investigação em Saúde e Ambiente (CISA), School of Allied Health Sciences – Polytechnic Institute of Oporto, Porto, Portugal
- Institute of Pathology and Molecular Immunology of the University of Porto (IPATIMUP), Porto, Portugal
| | - Andreia Peixoto
- Experimental Pathology and Therapeutics Group, Portuguese Institute of Oncology, Rua Dr. António Bernardino de Almeida, Porto, Portugal
| | - Elisabete Fernandes
- Experimental Pathology and Therapeutics Group, Portuguese Institute of Oncology, Rua Dr. António Bernardino de Almeida, Porto, Portugal
| | - Diogo Neves
- Experimental Pathology and Therapeutics Group, Portuguese Institute of Oncology, Rua Dr. António Bernardino de Almeida, Porto, Portugal
| | - Manuel Neves
- Experimental Pathology and Therapeutics Group, Portuguese Institute of Oncology, Rua Dr. António Bernardino de Almeida, Porto, Portugal
| | - Cristiana Gaiteiro
- Experimental Pathology and Therapeutics Group, Portuguese Institute of Oncology, Rua Dr. António Bernardino de Almeida, Porto, Portugal
| | - Ana Tavares
- Experimental Pathology and Therapeutics Group, Portuguese Institute of Oncology, Rua Dr. António Bernardino de Almeida, Porto, Portugal
- Department of Pathology, Portuguese Institute of Oncology, Porto, Portugal
| | - Rui M. Gil da Costa
- Experimental Pathology and Therapeutics Group, Portuguese Institute of Oncology, Rua Dr. António Bernardino de Almeida, Porto, Portugal
- Faculty of Engineering, Laboratory for Process, Environment, Biotechnology and Energy Engineering (LEPABE), University of Porto, Porto, Portugal
| | - Ricardo Cruz
- Department of Urology, Portuguese Institute of Oncology, Porto, Portugal
| | - Teresina Amaro
- Department of Urology, Hospital Pedro Hispano, Matosinhos, Portugal
| | - Paula A. Oliveira
- Department of Veterinary Sciences, CITAB, University of Trás-os-Montes and Alto Douro, Vila Real, Portugal
| | - José Alexandre Ferreira
- Experimental Pathology and Therapeutics Group, Portuguese Institute of Oncology, Rua Dr. António Bernardino de Almeida, Porto, Portugal
- Mass Spectrometry Center of the University of Aveiro, Campus de Santiago, Aveiro, Portugal
- * E-mail: (JAF); (LLS)
| | - Lúcio L. Santos
- Experimental Pathology and Therapeutics Group, Portuguese Institute of Oncology, Rua Dr. António Bernardino de Almeida, Porto, Portugal
- Health Sciences Faculty of University Fernando Pessoa, Porto, Portugal
- Department of Surgical Oncology, Portuguese Institute of Oncology, Porto, Portugal
- * E-mail: (JAF); (LLS)
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Hsieh HY, Shen CH, Lin RI, Feng YM, Huang SY, Wang YH, Wu SF, Hsu CD, Chan MWY. Cyproheptadine exhibits antitumor activity in urothelial carcinoma cells by targeting GSK3β to suppress mTOR and β-catenin signaling pathways. Cancer Lett 2015; 370:56-65. [PMID: 26454215 DOI: 10.1016/j.canlet.2015.09.018] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2015] [Revised: 09/29/2015] [Accepted: 09/29/2015] [Indexed: 02/08/2023]
Abstract
Cyproheptadine, a serotonin antagonist, has recently been reported to function as a novel therapeutic agent by inhibiting PI3K/AKT signaling in several human cancers. However, the therapeutic effect of cyproheptadine in urothelial carcinoma (UC) has never been explored. In this study, we determined the effect of cyproheptadine on the growth of five human UC cell lines and an in vivo xenograft model. The results showed that cyproheptadine exerted an inhibitory effect on the proliferation of UC cells both in vitro and in vivo. Cyproheptadine also induced cell cycle arrest in the G1 phase, subsequently followed by apoptosis and necrosis. The underlying mechanisms of cell cycle arrest were associated with the reduction of c-Myc, induction of p21 and p27, and the stabilization of Rb expression. In addition, the suppression of the GSK3β/TSC2/mTOR pathway and deregulation of the GSK3β/β-catenin signaling were observed in cyproheptadine-treated UC cells. Furthermore, cyproheptadine-induced apoptosis was associated with ANGPTL4 expression followed by activation of caspase3 and PARP in UC cells. Our experimental results provide evidence that cyproheptadine is a suitable therapeutic agent for the treatment of UC.
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Affiliation(s)
- Hsiao-Yen Hsieh
- Department of Medical Research, Ditmanson Medical Foundation Chiayi Christian Hospital, Chiayi, Taiwan; Graduate Institute of Molecular Biology, National Chung Cheng University, Min-Hsiung, Chiayi, Taiwan; Department of Life Science, National Chung Cheng University, 168 University Road, Min-Hsiung, Chiayi, Taiwan
| | - Cheng-Huang Shen
- Department of Medical Research, Ditmanson Medical Foundation Chiayi Christian Hospital, Chiayi, Taiwan; Department of Urology, Ditmanson Medical Foundation Chiayi Christian Hospital, 539 Jhongsiao Road, Chiayi 600, Taiwan
| | - Ru-Inn Lin
- Department of Radiation Oncology, Buddhist Dalin Tzu Chi General Hospital, Chiayi, Taiwan
| | - Yu-Min Feng
- Department of Internal Medicine, Ditmanson Medical Foundation Chiayi Christian Hospital, Chiayi, Taiwan; Department of Nursing, Chung-Jen Junior College of Nursing, Health Sciences and Management, Da-Lin, Chiayi, Taiwan
| | - Shih-Yuan Huang
- Graduate Institute of Molecular Biology, National Chung Cheng University, Min-Hsiung, Chiayi, Taiwan; Department of Life Science, National Chung Cheng University, 168 University Road, Min-Hsiung, Chiayi, Taiwan
| | - Yuan-Hung Wang
- Graduate Institute of Clinical Medicine, College of Medicine, Taipei Medical University, Taipei, Taiwan; Division of General Surgery, Department of Urology, Shuang Ho Hospital, Taipei Medical University, New Taipei City, Taiwan
| | - Shu-Fen Wu
- Graduate Institute of Molecular Biology, National Chung Cheng University, Min-Hsiung, Chiayi, Taiwan; Department of Life Science, National Chung Cheng University, 168 University Road, Min-Hsiung, Chiayi, Taiwan
| | - Cheng-Da Hsu
- Department of Medical Research, Ditmanson Medical Foundation Chiayi Christian Hospital, Chiayi, Taiwan; Graduate Institute of Molecular Biology, National Chung Cheng University, Min-Hsiung, Chiayi, Taiwan; Department of Urology, Ditmanson Medical Foundation Chiayi Christian Hospital, 539 Jhongsiao Road, Chiayi 600, Taiwan.
| | - Michael W Y Chan
- Graduate Institute of Molecular Biology, National Chung Cheng University, Min-Hsiung, Chiayi, Taiwan; Department of Life Science, National Chung Cheng University, 168 University Road, Min-Hsiung, Chiayi, Taiwan.
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Lezhnina K, Kovalchuk O, Zhavoronkov AA, Korzinkin MB, Zabolotneva AA, Shegay PV, Sokov DG, Gaifullin NM, Rusakov IG, Aliper AM, Roumiantsev SA, Alekseev BY, Borisov NM, Buzdin AA. Novel robust biomarkers for human bladder cancer based on activation of intracellular signaling pathways. Oncotarget 2015; 5:9022-32. [PMID: 25296972 PMCID: PMC4253415 DOI: 10.18632/oncotarget.2493] [Citation(s) in RCA: 40] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023] Open
Abstract
We recently proposed a new bioinformatic algorithm called OncoFinder for quantifying the activation of intracellular signaling pathways. It was proved advantageous for minimizing errors of high-throughput gene expression analyses and showed strong potential for identifying new biomarkers. Here, for the first time, we applied OncoFinder for normal and cancerous tissues of the human bladder to identify biomarkers of bladder cancer. Using Illumina HT12v4 microarrays, we profiled gene expression in 17 cancer and seven non-cancerous bladder tissue samples. These experiments were done in two independent laboratories located in Russia and Canada. We calculated pathway activation strength values for the investigated transcriptomes and identified signaling pathways that were regulated differently in bladder cancer (BC) tissues compared with normal controls. We found, for both experimental datasets, 44 signaling pathways that serve as excellent new biomarkers of BC, supported by high area under the curve (AUC) values. We conclude that the OncoFinder approach is highly efficient in finding new biomarkers for cancer. These markers are mathematical functions involving multiple gene products, which distinguishes them from “traditional” expression biomarkers that only assess concentrations of single genes.
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Affiliation(s)
- Ksenia Lezhnina
- Pathway Pharmaceuticals, Wan Chai, Hong Kong, Hong Kong SAR. Laboratory of Bioinformatics, D. Rogachyov Federal Research Center of Pediatric Hematology, Oncology and Immunology, Moscow, Russia
| | - Olga Kovalchuk
- Department of Biological Sciences, University of Lethbridge, 4401 University Drive, Lethbridge, AB, T1K 3M4. Canada Cancer and Aging Research Laboratories, Lethbridge, AB, Canada
| | - Alexander A Zhavoronkov
- Laboratory of Bioinformatics, D. Rogachyov Federal Research Center of Pediatric Hematology, Oncology and Immunology, Moscow, Russia. Insilico Medicine, Inc, ETC, Johns Hopkins University, Baltimore, MD. Faculty of Biological and Medical Physics, Moscow Institute of Physics and Technology
| | | | - Anastasia A Zabolotneva
- Group for Genomic Regulation of Cell Signaling Systems, Shemyakn-Ovchinnikov Institute of Bioorganic Chemistry, Moscow, Russia
| | - Peter V Shegay
- P.A. Herzen Moscow Oncological Research Institute, Moscow, Russia
| | | | - Nurshat M Gaifullin
- Lomonosov Moscow State University, Faculty of Fundamental Medicine, Moscow, Russia. Russian medical postgraduate academy,Moscow, Russia
| | - Igor G Rusakov
- P.A. Herzen Moscow Oncological Research Institute, Moscow, Russia
| | - Alexander M Aliper
- Pathway Pharmaceuticals, Wan Chai, Hong Kong, Hong Kong SAR. Laboratory of Bioinformatics, D. Rogachyov Federal Research Center of Pediatric Hematology, Oncology and Immunology, Moscow, Russia
| | - Sergey A Roumiantsev
- Laboratory of Bioinformatics, D. Rogachyov Federal Research Center of Pediatric Hematology, Oncology and Immunology, Moscow, Russia
| | - Boris Y Alekseev
- P.A. Herzen Moscow Oncological Research Institute, Moscow, Russia
| | - Nikolay M Borisov
- Laboratory of Systems Biology, A.I. Burnasyan Federal Medical Biophysical Center, Moscow, Russia
| | - Anton A Buzdin
- Pathway Pharmaceuticals, Wan Chai, Hong Kong, Hong Kong SAR. Laboratory of Bioinformatics, D. Rogachyov Federal Research Center of Pediatric Hematology, Oncology and Immunology, Moscow, Russia. Group for Genomic Regulation of Cell Signaling Systems, Shemyakn-Ovchinnikov Institute of Bioorganic Chemistry, Moscow, Russia
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Sabbineni H, Alwhaibi A, Goc A, Gao F, Pruitt A, Somanath PR. Genetic deletion and pharmacological inhibition of Akt1 isoform attenuates bladder cancer cell proliferation, motility and invasion. Eur J Pharmacol 2015; 764:208-214. [PMID: 26148825 DOI: 10.1016/j.ejphar.2015.06.059] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2015] [Revised: 06/09/2015] [Accepted: 06/29/2015] [Indexed: 01/17/2023]
Abstract
Isoform specific expression, intracellular localization and function of Akt in bladder cancer are not known. In the current study, we identified Akt1, followed by Akt2 and Akt3 as the predominant Akt isoform in human T24 and UM-UC-3 metastatic bladder cancer cells. Whereas Akt1 is localized at the membrane, cytoplasm and nucleus, Akt2 is solely cytoplasmic and Akt3 is mostly localized in the nucleus in T24 cells. ShRNA-mediated Akt1 knockdown resulted in impaired T24 cell survival, proliferation, colony formation, migration and microinvasion. Whereas pharmacological inhibition of Akt1 resulted in impaired T24 and UM-UC-3 cell motility, viability and proliferation, effect of pharmacological inhibition by Akt2 inhibitor was limited to proliferation in T24, but not UM-UC-3 cells. Our data provide important clues on the therapeutic benefits of targeting Akt1 for bladder cancer therapy.
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Affiliation(s)
- Harika Sabbineni
- Clinical and Experimental Therapeutics, College of Pharmacy, University of Georgia and Charlie Norwood VA Medical Center, Augusta, GA, United States
| | - Abdulrahman Alwhaibi
- Clinical and Experimental Therapeutics, College of Pharmacy, University of Georgia and Charlie Norwood VA Medical Center, Augusta, GA, United States
| | - Anna Goc
- Clinical and Experimental Therapeutics, College of Pharmacy, University of Georgia and Charlie Norwood VA Medical Center, Augusta, GA, United States
| | - Fei Gao
- Clinical and Experimental Therapeutics, College of Pharmacy, University of Georgia and Charlie Norwood VA Medical Center, Augusta, GA, United States
| | - Alanna Pruitt
- Clinical and Experimental Therapeutics, College of Pharmacy, University of Georgia and Charlie Norwood VA Medical Center, Augusta, GA, United States
| | - Payaningal R Somanath
- Clinical and Experimental Therapeutics, College of Pharmacy, University of Georgia and Charlie Norwood VA Medical Center, Augusta, GA, United States; Department of Medicine, Vascular Biology Center and Cancer Center, Georgia Regents University, Augusta, GA, United States.
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Bellmunt J, Werner L, Leow JJ, Mullane SA, Fay AP, Riester M, Van Hummelen P, Taplin ME, Choueiri TK, Van Allen E, Rosenberg J. Somatic Copy Number Abnormalities and Mutations in PI3K/AKT/mTOR Pathway Have Prognostic Significance for Overall Survival in Platinum Treated Locally Advanced or Metastatic Urothelial Tumors. PLoS One 2015; 10:e0124711. [PMID: 26039708 PMCID: PMC4454515 DOI: 10.1371/journal.pone.0124711] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2014] [Accepted: 03/05/2015] [Indexed: 01/22/2023] Open
Abstract
BACKGROUND An integrative analysis was conducted to identify genomic alterations at a pathway level that could predict overall survival (OS) in patients with advanced urothelial carcinoma (UC) treated with platinum-based chemotherapy. PATIENTS AND METHODS DNA and RNA were extracted from 103 formalin-fixed paraffin embedded (FFPE) invasive high-grade UC samples and were screened for mutations, copy number variation (CNV) and gene expression analysis. Clinical data were available from 85 cases. Mutations were analyzed by mass-spectrometry based on genotyping platform (Oncomap 3) and genomic imbalances were detected by comparative genomic hybridization (CGH) analysis. Regions with threshold of log2 ratio ≥0.4, or ≤0.6 were defined as either having copy number gain or loss and significantly recurrent CNV across the set of samples were determined using a GISTIC analysis. Expression analysis on selected relevant UC genes was conducted using Nanostring. To define the co-occurrence pattern of mutations and CNV, we grouped genomic events into 5 core signal transduction pathways: 1) TP53 pathway, 2) RTK/RAS/RAF pathway, 3) PI3K/AKT/mTOR pathway, 4) WNT/CTNNB1, 5) RB1 pathway. Cox regression was used to assess pathways abnormalities with survival outcomes. RESULTS 35 samples (41%) harbored mutations on at least one gene: TP53 (16%), PIK3CA (9%), FGFR3 (2%), HRAS/KRAS (5%), and CTNNB1 (1%). 66% of patients had some sort of CNV. PIK3CA/AKT/mTOR pathway alteration (mutations+CNV) had the greatest impact on OS (p=0.055). At a gene level, overexpression of CTNNB1 (p=0.0008) and PIK3CA (p=0.02) were associated with shorter OS. Mutational status on PIK3CA was not associated with survival. Among other individually found genomic alterations, TP53 mutations (p=0.07), mTOR gain (p=0.07) and PTEN overexpression (p=0.08) have a marginally significant negative impact on OS. CONCLUSIONS Our study suggests that targeted therapies focusing on the PIK3CA/AKT/mTOR pathway genomic alterations can generate the greatest impact in the overall patient population of high-grade advanced UC.
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Affiliation(s)
- Joaquim Bellmunt
- Lank Center for Genitourinary Oncology, Dana-Farber Cancer Institute/Brigham and Women's Hospital, Harvard Medical School, Boston, MA, United States of America
| | - Lillian Werner
- Biostatistics and Computational Biology, Harvard Medical School, Dana-Farber Cancer Institute, Boston, MA, United States of America
| | - Jeffrey J. Leow
- Lank Center for Genitourinary Oncology, Dana-Farber Cancer Institute/Brigham and Women's Hospital, Harvard Medical School, Boston, MA, United States of America
| | - Stephanie A. Mullane
- Lank Center for Genitourinary Oncology, Dana-Farber Cancer Institute/Brigham and Women's Hospital, Harvard Medical School, Boston, MA, United States of America
| | - André P. Fay
- Lank Center for Genitourinary Oncology, Dana-Farber Cancer Institute/Brigham and Women's Hospital, Harvard Medical School, Boston, MA, United States of America
| | - Markus Riester
- Biostatistics and Computational Biology, Harvard Medical School, Dana-Farber Cancer Institute, Boston, MA, United States of America
| | - Paul Van Hummelen
- Center for Cancer Genome Discovery, Dana-Farber Cancer Institute, Boston, MA, United States of America
| | - Mary-Ellen Taplin
- Lank Center for Genitourinary Oncology, Dana-Farber Cancer Institute/Brigham and Women's Hospital, Harvard Medical School, Boston, MA, United States of America
| | - Toni K. Choueiri
- Lank Center for Genitourinary Oncology, Dana-Farber Cancer Institute/Brigham and Women's Hospital, Harvard Medical School, Boston, MA, United States of America
| | - Eliezer Van Allen
- Lank Center for Genitourinary Oncology, Dana-Farber Cancer Institute/Brigham and Women's Hospital, Harvard Medical School, Boston, MA, United States of America
| | - Jonathan Rosenberg
- Memorial Sloan Kettering Cancer Center, New York, NY, United States of America
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75
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Hassanian SM, Dinarvand P, Smith SA, Rezaie AR. Inorganic polyphosphate elicits pro-inflammatory responses through activation of the mammalian target of rapamycin complexes 1 and 2 in vascular endothelial cells. J Thromb Haemost 2015; 13:860-71. [PMID: 25776944 PMCID: PMC4424178 DOI: 10.1111/jth.12899] [Citation(s) in RCA: 50] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2014] [Indexed: 01/11/2023]
Abstract
BACKGROUND Inorganic polyphosphate (polyP) elicits pro-inflammatory signaling responses in endothelial cells through interaction with two receptors, RAGE and P2Y1 . It is known that polyP activates mTOR signaling in breast cancer cells. OBJECTIVES The objective of this study is to understand the mechanism of the polyP-mediated signaling pathway in endothelial cells and to determine whether polyP exerts its pro-inflammatory effect through activation of mTOR. METHODS mTOR activation by polyP or platelet releasates in cellular and animal models was monitored in the absence and presence of pharmacological inhibitors and/or siRNA knockdown of specific signaling molecules. RESULTS PolyP effectively induced phosphorylation of mTOR complex 1 (mTORC1) substrate, p70S6K, in endothelial cells by an AKT-dependent but ERK-independent mechanism. The siRNA knockdown of both RAGE and P2Y1 or specific inhibitors of the PI3K/PLC/PKC/Ca(2+) signaling axis inhibited polyP-mediated p70S6K phosphorylation. Moreover, either rapamycin or siRNA knockdown of raptor (mTORC1-specific component) abrogated polyP-mediated phosphorylation of p70S6K. By contrast, the siRNA knockdown of rictor (mTOR complex 2-specific component) but not raptor eliminated the barrier-disruptive effect of polyP. Specific NF-κB inhibitors abrogated polyP-mediated phosphorylation of p70S6K and rapamycin suppressed polyP-induced activation of NF-κB. Finally, specific inhibitors of the mTOR signaling network eliminated polyP-mediated vascular leakage and leukocyte recruitment in animal models. CONCLUSIONS PolyP, through interaction with RAGE and P2Y1 , activates both the mTORC1 and mTORC2 signaling network. Both the pro-inflammatory and mTOR signaling functions of polyP are linked.
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Affiliation(s)
- Seyed Mahdi Hassanian
- Edward A. Doisy Department of Biochemistry and Molecular Biology, Saint Louis University School of Medicine, Saint Louis, MO
| | - Peyman Dinarvand
- Edward A. Doisy Department of Biochemistry and Molecular Biology, Saint Louis University School of Medicine, Saint Louis, MO
| | - Stephanie A. Smith
- Department of Biochemistry, College of Medicine, University of Illinois at Urbana-Champaign, Urbana, IL
| | - Alireza R. Rezaie
- Edward A. Doisy Department of Biochemistry and Molecular Biology, Saint Louis University School of Medicine, Saint Louis, MO
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Amantini C, Morelli MB, Santoni M, Soriani A, Cardinali C, Farfariello V, Eleuteri AM, Bonfili L, Mozzicafreddo M, Nabissi M, Cascinu S, Santoni G. Sorafenib induces cathepsin B-mediated apoptosis of bladder cancer cells by regulating the Akt/PTEN pathway. The Akt inhibitor, perifosine, enhances the sorafenib-induced cytotoxicity against bladder cancer cells. Oncoscience 2015; 2:395-409. [PMID: 26097873 PMCID: PMC4468325 DOI: 10.18632/oncoscience.147] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2015] [Accepted: 03/16/2015] [Indexed: 01/08/2023] Open
Abstract
Sorafenib, a tyrosine kinase inhibitor, has been demonstrated to exert anti-tumor effects. However, the molecular mechanisms underlying its effects on bladder cancer remain unknown. Here, we evaluated the mechanisms responsible for the sorafenib-induced anti-tumor effects on 5637 and T24 bladder cancer cells. We demonstrated that sorafenib reduces cell viability, stimulates lysosome permeabilization and induces apoptosis of bladder cancer cells. These effects are dependent by the activation of cathepsin B released from lysosomes. The sorafenib-increased cathepsin B activity induced the proteolysis of Bid into tBid that stimulates the intrinsic pathway of apoptosis characterized by mitochondrial membrane depolarization, oxygen radical generation and cytochrome c release. Moreover, we found that cathepsin B enzymatic activity, induced by sorafenib, is dependent on its dephosphorylation via PTEN activation and Akt inactivation. Pretreatment with orthovanadate rescued bladder cancer cells from apoptosis. In addition, the Akt inhibitor perifosine increased the sensitivity of bladder cancer cells to sorafenib-induced cytotoxicity. Overall, our results show that apoptotic cell death induced by sorafenib in bladder cancer cells is dependent on cathepsin B activity and involved PTEN and Akt signaling pathways. The Akt inhibitor perifosine increased the cytotoxic effects of sorafenib in bladder cancer cells.
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Affiliation(s)
- Consuelo Amantini
- School of Biosciences and Veterinary Medicine, University of Camerino, Camerino, Italy
| | - Maria Beatrice Morelli
- School of Pharmacy, Experimental Medicine Section, University of Camerino, Camerino, Italy ; Department of Molecular Medicine, Sapienza University, Rome, Italy
| | - Matteo Santoni
- Department of Medical Oncology, Polytechnic University of Marche, Ancona, Italy
| | | | - Claudio Cardinali
- School of Pharmacy, Experimental Medicine Section, University of Camerino, Camerino, Italy ; Department of Molecular Medicine, Sapienza University, Rome, Italy
| | | | - Anna Maria Eleuteri
- School of Biosciences and Veterinary Medicine, University of Camerino, Camerino, Italy
| | - Laura Bonfili
- School of Biosciences and Veterinary Medicine, University of Camerino, Camerino, Italy
| | - Matteo Mozzicafreddo
- School of Biosciences and Veterinary Medicine, University of Camerino, Camerino, Italy
| | - Massimo Nabissi
- School of Pharmacy, Experimental Medicine Section, University of Camerino, Camerino, Italy
| | - Stefano Cascinu
- Department of Molecular Medicine, Sapienza University, Rome, Italy
| | - Giorgio Santoni
- School of Pharmacy, Experimental Medicine Section, University of Camerino, Camerino, Italy
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Assis LVMD, Isoldi MC. Overview of the biochemical and genetic processes in malignant mesothelioma. J Bras Pneumol 2015; 40:429-42. [PMID: 25210967 PMCID: PMC4201175 DOI: 10.1590/s1806-37132014000400012] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2014] [Accepted: 06/16/2014] [Indexed: 12/29/2022] Open
Abstract
Malignant mesothelioma (MM) is a highly aggressive form of cancer, has a long latency period, and is resistant to chemotherapy. It is extremely fatal, with a mean survival of less than one year. The development of MM is strongly correlated with exposure to asbestos and with other factors, such as erionite and simian virus 40 [corrected]. Although various countries have banned the use of asbestos, MM has proven to be difficult to control and there appears to be a trend toward an increase in its incidence in the years to come. In Brazil, MM has not been widely studied from a genetic or biochemical standpoint. In addition, there have been few epidemiological studies of the disease, and the profile of its incidence has yet to be well established in the Brazilian population. The objective of this study was to review the literature regarding the processes of malignant transformation, as well as the respective mechanisms of tumorigenesis, in MM.
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Chi BH, Kim SJ, Seo HK, Seo HH, Lee SJ, Kwon JK, Lee TJ, Chang IH. P70S6K and Elf4E dual inhibition is essential to control bladder tumor growth and progression in orthotopic mouse non-muscle invasive bladder tumor model. J Korean Med Sci 2015; 30:308-16. [PMID: 25729255 PMCID: PMC4330487 DOI: 10.3346/jkms.2015.30.3.308] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/02/2014] [Accepted: 11/10/2014] [Indexed: 11/20/2022] Open
Abstract
We investigated how the dual inhibition of the molecular mechanism of the mammalian target of the rapamycin (mTOR) downstreams, P70S6 kinase (P70S6K) and eukaryotic initiation factor 4E (eIF4E), can lead to a suppression of the proliferation and progression of urothelial carcinoma (UC) in an orthotopic mouse non-muscle invasive bladder tumor (NMIBT) model. A KU-7-luc cell intravesically instilled orthotopic mouse NMIBC model was monitored using bioluminescence imaging (BLI) in vivo by interfering with different molecular components using rapamycin and siRNA technology. We then analyzed the effects on molecular activation status, cell growth, proliferation, and progression. A high concentration of rapamycin (10 µM) blocked both P70S6K and elF4E phosphorylation and inhibited cell proliferation in the KU-7-luc cells. It also reduced cell viability and proliferation more than the transfection of siRNA against p70S6K or elF4E. The groups with dual p70S6K and elF4E siRNA, and rapamycin reduced tumor volume and lamina propria invasion more than the groups with p70S6K or elF4E siRNA instillation, although all groups reduced photon density compared to the control. These findings suggest that both the mTOR pathway downstream of eIF4E and p70S6K can be successfully inhibited by high dose rapamycin only, and p70S6K and Elf4E dual inhibition is essential to control bladder tumor growth and progression.
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Affiliation(s)
- Byung Hoon Chi
- Department of Urology, Chung-Ang University College of Medicine, Seoul, Korea
| | - Soon-Ja Kim
- Biomedical Science, Department of Medicine, Chung-Ang University Graduate School, Seoul, Korea
| | - Ho Kyung Seo
- Center for Prostate Cancer, Research Institute, National Cancer Center, Goyang, Korea
| | - Hye-Hyun Seo
- Genitourinary Cancer Branch, Research Institute, National Cancer Center, Goyang, Korea
| | - Sang-Jin Lee
- Genitourinary Cancer Branch, Research Institute, National Cancer Center, Goyang, Korea
| | - Jong Kyou Kwon
- Department of Urology, Chung-Ang University College of Medicine, Seoul, Korea
| | - Tae-Jin Lee
- Department of Pathology, Chung-Ang University College of Medicine, Seoul, Korea
| | - In Ho Chang
- Department of Urology, Chung-Ang University College of Medicine, Seoul, Korea
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79
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Kuperstein I, Grieco L, Cohen DPA, Thieffry D, Zinovyev A, Barillot E. The shortest path is not the one you know: application of biological network resources in precision oncology research. Mutagenesis 2015; 30:191-204. [DOI: 10.1093/mutage/geu078] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022] Open
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Abstract
Mutations activating the PI3K (phosphoinositide 3-kinase)/Akt signalling pathway and inactivating the TP53 tumour-suppressor gene are common mechanisms that cancer cells require to proliferate and escape pre-programmed cell death. In a well-described mechanism, Akt mediates negative control of p53 levels through enhancing MDM2 (murine double minute 2)-mediated targeting of p53 for degradation. Accumulating evidence is beginning to suggest that, in certain circumstances, PTEN (phosphatase and tensin homologue deleted on chromosome 10)/PI3K/Akt also promotes p53 translation and protein stability, suggesting that additional mechanisms may be involved in the Akt-mediated regulation of p53 in tumours. In the present article, we discuss these aspects in the light of clinical PI3K/Akt inhibitors, where information regarding the effect on p53 activity will be a crucial factor that will undoubtedly influence therapeutic efficacy.
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Affiliation(s)
- Aswin G Abraham
- *Cancer Research UK/MRC Oxford Institute, Gray Laboratories, Department of Oncology, University of Oxford, Old Road Campus, Roosevelt Drive, Oxford OX3 7DQ, U.K
| | - Eric O'Neill
- *Cancer Research UK/MRC Oxford Institute, Gray Laboratories, Department of Oncology, University of Oxford, Old Road Campus, Roosevelt Drive, Oxford OX3 7DQ, U.K
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Pinto-Leite R, Arantes-Rodrigues R, Ferreira R, Palmeira C, Oliveira PA, Santos L. Treatment of muscle invasive urinary bladders tumors: A potential role of the mTOR inhibitors. ACTA ACUST UNITED AC 2014. [DOI: 10.1016/j.biomag.2014.03.003] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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Houédé N, Pourquier P. Targeting the genetic alterations of the PI3K-AKT-mTOR pathway: its potential use in the treatment of bladder cancers. Pharmacol Ther 2014; 145:1-18. [PMID: 24929024 DOI: 10.1016/j.pharmthera.2014.06.004] [Citation(s) in RCA: 67] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2014] [Accepted: 06/06/2014] [Indexed: 02/07/2023]
Abstract
Urothelial carcinoma of the bladder is the most frequent tumor of the urinary tract and represents the fifth cause of death by cancer worldwide. The current first line chemotherapy is a combination of cisplatin and gemcitabine with median survival not exceeding 15months. Vinflunine is the only drug approved by EMEA as second-line treatment and few progresses have been made for the past 20years to increase the survival of metastatic patients, especially those who are not eligible for cisplatin-based regimen. The recent studies characterizing the genetic background of urothelial cancers of the bladder, revealed chromosomal alterations that are not seen at the same level in other types of cancers. This is especially the case for mutations of genes involved in the PI3K/AKT/mTOR signaling pathway that occupies a major place in the etiology of these tumors. Here, we describe the mutations leading to constitutive activation of the PI3K/AKT/mTOR pathway and discuss the potential use of the different classes of PI3K/AKT/mTOR inhibitors in the treatment of urothelial bladder cancers. Despite the recent pivotal study evidencing specific mutations of TSC1 in bladder cancer patients responding to everolimus and the encouraging results obtained with other derivatives than rapalogs, few clinical trials are ongoing in bladder cancers. Because of the genetic complexity of these tumors, the cross-talks of the PI3K/AKT/mTOR pathway with other pathways, and the small number of eligible patients, it will be of utmost importance to carefully choose the drugs or drug combinations to be further tested in the clinic.
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Affiliation(s)
- Nadine Houédé
- Service d'Oncologie Médicale, Centre Hospitalier Universitaire de Nîmes, France; INSERM U896, Institut de Recherche en Cancérologie de Montpellier & Université de Montpellier 1, France.
| | - Philippe Pourquier
- Service d'Oncologie Médicale, Centre Hospitalier Universitaire de Nîmes, France; INSERM U896, Institut de Recherche en Cancérologie de Montpellier & Université de Montpellier 1, France
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The role of PTEN tumor suppressor pathway staining in carcinoma in situ of the bladder. Urol Oncol 2014; 32:657-62. [PMID: 24840867 DOI: 10.1016/j.urolonc.2014.02.003] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2013] [Revised: 12/27/2013] [Accepted: 02/03/2014] [Indexed: 11/23/2022]
Abstract
OBJECTIVES The PI3k/Akt pathway has been associated with the development and progression of bladder tumors, with most studies focused on papillary or muscle-invasive tumors. We sought to characterize the expression patterns of the PI3K/Akt pathway in a large cohort of high-risk preinvasive carcinoma in situ (CIS) tumors of the bladder. Our goal was to understand whether PI3K/Akt pathway alterations associated with CIS resemble early- or late-stage bladder cancers. MATERIAL AND METHODS We evaluated tissue specimens from 97 patients with CIS of the bladder, of which 14 had a concomitant papillary tumor. All patients were treated with intravesical bacillus Calmette-Guerin. All specimens were evaluated for PTEN, p-AKT, and p-S6 immunoreactivity. Markers were evaluated for percentage and intensity of staining and were scored using a 0 to 3+grading system. RESULTS PTEN staining was noted as least intense in 67% of tumor specimens and 22% of normal urothelium. P-Akt and p-S6 had intense staining in 77% and 90% of tumor specimens vs. 44% and 68% in normal tissue, respectively. Low-intensity staining for PTEN at 12 months correlated with higher recurrence risk (P = 0.026). CONCLUSION We describe a large cohort of CIS bladder tumors with decreased staining intensity of PTEN and increased staining intensity of p-AKT and p-S6, similar to high-grade and high-stage papillary tumors. Low-intensity staining of PTEN at 12 months was associated with an increased risk of recurrence.
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84
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Huang YD, Shan W, Zeng L, Wu Y. Screening of differentially expressed genes related to bladder cancer and functional analysis with DNA microarray. Asian Pac J Cancer Prev 2014; 14:4553-7. [PMID: 24083701 DOI: 10.7314/apjcp.2013.14.8.4553] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023] Open
Abstract
OBJECTIVE The purpose of this study was to identify genes related to bladder cancer with samples from normal and disease cases by microarray chip. METHODS After downloading the gene expression profile GSE3167 from Gene Expression Omnibus database which includes 50 bladder samples, comprising 9 normal and 41 disease samples, differentially expressed genes were identified with packages in R language. The selected differentially expressed genes were further analyzed using bioinformatics methods. Firstly, molecular functions, biological processes and cell component analysis were researched by software Gestalt. Then, software String was used to search interaction relationships among differentially expressed genes, and hub genes of the network were selected. Finally, by using plugins of software Cytoscape, Mcode and Bingo, module analysis of hub-genes was performed. RESULTS A total of 221 genes were identified as differentially expressed by comparing normal and disease bladder samples, and a network as well as the hub gene C1QBP was obtained from the network. The C1QBP module had the closest relationship to production of molecular mediators involved in inflammatory responses. CONCLUSION We obtained differentially expressed genes of bladder cancer by microarray, and both PRDX2 and YWHAZ in the module with hub gene C1QBP were most significantly related to production of molecular mediators involved in inflammatory responses. From knowledge of inflammatory responses and cancer, our results showed that, the hub gene and its module could induce inflammation in bladder cancer. These related genes are candidate bio-markers for bladder cancer diagnosis and might be helpful in designing novel therapies.
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Affiliation(s)
- Yi-Dong Huang
- Department of Pediatric Surgery, West China Hospital of Sichuan University, Chengdu, China E-mail :
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Böhm M, Schostak M, Hakenberg OW. Urinary immunocytology—Promise or nonseller? A review with an opinion. Urol Oncol 2014; 32:383-90. [DOI: 10.1016/j.urolonc.2013.11.002] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2013] [Revised: 10/18/2013] [Accepted: 11/05/2013] [Indexed: 12/22/2022]
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86
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Srinivasan H, Allory Y, Sill M, Vordos D, Alhamdani MSS, Radvanyi F, Hoheisel JD, Schröder C. Prediction of recurrence of non muscle-invasive bladder cancer by means of a protein signature identified by antibody microarray analyses. Proteomics 2014; 14:1333-42. [DOI: 10.1002/pmic.201300320] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2013] [Revised: 02/05/2014] [Accepted: 02/28/2014] [Indexed: 12/27/2022]
Affiliation(s)
- Harish Srinivasan
- Division of Functional Genome Analysis; Deutsches Krebsforschungszentrum (DKFZ); Heidelberg Germany
| | - Yves Allory
- Département de Pathologie et Plateforme de Ressources Biologiques, AP-HP Hôpitaux Universitaires Henri Mondor; Créteil France
| | - Martin Sill
- Division of Biostatistics; Deutsches Krebsforschungszentrum (DKFZ); Heidelberg Germany
| | - Dimitri Vordos
- AP-HP Hôpitaux Universitaires Henri Mondor; Service d´Urologie; Créteil France
| | | | | | - Jörg D. Hoheisel
- Division of Functional Genome Analysis; Deutsches Krebsforschungszentrum (DKFZ); Heidelberg Germany
| | - Christoph Schröder
- Division of Functional Genome Analysis; Deutsches Krebsforschungszentrum (DKFZ); Heidelberg Germany
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87
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Xue M, Li X, Li Z, Chen W. Urothelial carcinoma associated 1 is a hypoxia-inducible factor-1α-targeted long noncoding RNA that enhances hypoxic bladder cancer cell proliferation, migration, and invasion. Tumour Biol 2014; 35:6901-12. [PMID: 24737584 DOI: 10.1007/s13277-014-1925-x] [Citation(s) in RCA: 123] [Impact Index Per Article: 12.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2014] [Accepted: 04/01/2014] [Indexed: 12/14/2022] Open
Abstract
Urothelial carcinoma associated 1 (UCA1) has been identified as an oncogenic long noncoding RNA (lncRNA) that is involved in bladder cancer progression and acts as a diagnostic biomarker for bladder carcinoma. Here, we studied the expression and function of lncRNA-UCA1 in the hypoxic microenvironment of bladder cancer. The expression and transcriptional activity of lncRNA-UCA1 were measured by quantitative real-time polymerase chain reaction and luciferase assays. Cell proliferation and apoptosis were evaluated by MTT assays and flow cytometry. Cell migration and invasion were detected by wound healing, migration, and invasion assays. The binding of hypoxia-inducible factor-1α (HIF-1α) to hypoxia response elements (HREs) in the lncRNA-UCA1 promoter was confirmed by electrophoretic mobility shift assay and chromatin immunoprecipitation. HRE mutations were generated by using a site-directed mutagenesis kit, and HIF-1α knockdown was mediated by small interfering RNA. The effect of HIF-1α inhibition by YC-1 on lncRNA-UCA1 expression was also examined. LncRNA-UCA1 was upregulated by hypoxia in bladder cancer cells. Under hypoxic conditions, lncRNA-UCA1 upregulation increased cell proliferation, migration, and invasion and inhibited apoptosis. The underlying mechanism of hypoxia-upregulated lncRNA-UCA1 expression was that HIF-1α specifically bound to HREs in the lncRNA-UCA1 promoter. Furthermore, HIF-1α knockdown or inhibition could prevent lncRNA-UCA1 upregulation under hypoxia. These findings revealed the mechanism of lncRNA-UCA1 upregulation in hypoxic bladder cancer cells and suggested that effective blocking of lncRNA-UCA1 expression in the hypoxic microenvironment of bladder cancer could be a novel therapeutic strategy.
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Affiliation(s)
- Mei Xue
- Center for Translational Medicine, The First Affiliated Hospital, School of Medicine, Xi'an Jiaotong University, Xi'an, Peoples Republic of China
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88
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ZHOU CHENXI, DING JUN, WU YUANWEN. Resveratrol induces apoptosis of bladder cancer cells via miR-21 regulation of the Akt/Bcl-2 signaling pathway. Mol Med Rep 2014; 9:1467-73. [DOI: 10.3892/mmr.2014.1950] [Citation(s) in RCA: 49] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2013] [Accepted: 01/29/2014] [Indexed: 11/06/2022] Open
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The role of key genes and pathways involved in the tumorigenesis of Malignant Mesothelioma. Biochim Biophys Acta Rev Cancer 2014; 1845:232-47. [PMID: 24491449 DOI: 10.1016/j.bbcan.2014.01.008] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2013] [Revised: 01/20/2014] [Accepted: 01/24/2014] [Indexed: 12/14/2022]
Abstract
Malignant Mesothelioma (MM) is a very aggressive cancer with low survival rates and often diagnosed at an advanced stage. Several players have been implicated in the development of this cancer, such as asbestos, erionite and the simian virus 40 (SV40). Here, we have reviewed the involvement of erionite, SV40, as well as, the role of several genes (p16(INK4a), p14(ARF), NF2, LATS2, SAV, CTNNB1 and among others), the pathways (RAS, PI3K, Wnt, BCL and Hippo), and their respective roles in the development of MM.
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90
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Dueñas M, Martínez-Fernández M, García-Escudero R, Villacampa F, Marqués M, Saiz-Ladera C, Duarte J, Martínez V, Gómez MJ, Martín ML, Fernández M, Castellano D, Real FX, Rodriguez-Peralto JL, De La Rosa F, Paramio JM. PIK3CA gene alterations in bladder cancer are frequent and associate with reduced recurrence in non-muscle invasive tumors. Mol Carcinog 2013; 54:566-76. [PMID: 24347284 DOI: 10.1002/mc.22125] [Citation(s) in RCA: 41] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2013] [Revised: 11/20/2013] [Accepted: 11/26/2013] [Indexed: 12/12/2022]
Abstract
Bladder cancer (BC) is the fifth most common cancer in the world, being the non-muscle invasive tumors (NMIBC) the most frequent. NMIBC shows a very high frequency of recurrence and, in certain cases, tumor progression. The phosphatidylinositol 3-kinase (PI3K) pathway, which controls cell growth, tumorigenesis, cell invasion and drug response, is frequently activated in numerous human cancers, including BC, in part through alterations of PIK3CA gene. However, the significance of PIK3CA gene alterations with respect to clinicopathological characteristics, and in particular tumor recurrence and progression, remains elusive. Here, we analyzed the presence of mutations in FGFR3 and PIK3CA genes and copy number alterations of PIK3CA gene in bladder tumor and their correspondent paired normal samples from 87 patients. We observed an extremely high frequency of PIK3CA gene alterations (mutations, copy gains, or both) in tumor samples, affecting primarily T1 and T2 tumors. A significant number of normal tissues also showed mutations and copy gains, being coincident with those found in the corresponding tumor sample. In low-grade tumors PIK3CA mutations associated with FGFR3 mutations. Alterations in PIK3CA gene resulted in increased Akt activity in tumors. Interestingly, the presence of PIK3CA gene alterations, and in particular gene mutations, is significantly associated with reduced recurrence of NMIBC patients. Importantly, the presence of FGFR3 mutations may influence the clinical outcome of patients bearing alterations in PIK3CA gene, and increased recurrence was associated to FGFR3 mutated, PIK3CA wt tumors. These findings may have high relevance in terms of using PI3K-targeted therapies for BC treatment.
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Affiliation(s)
- Marta Dueñas
- Unidad de Oncología Molecular, CIEMAT (ed70A), Madrid, Spain
| | | | | | - Felipe Villacampa
- Unidad de Uro-Oncología, Hospital Universitario 12 de Octubre, Madrid, Spain
| | - Miriam Marqués
- Epithelial Carcinogenesis Group, Molecular Pathology Programme, Centro Nacional de Investigaciones Oncológicas (CNIO) Melchor Fernández Almagro, Madrid, Spain
| | | | - José Duarte
- Unidad de Uro-Oncología, Hospital Universitario 12 de Octubre, Madrid, Spain
| | - Victor Martínez
- Unidad de Uro-Oncología, Hospital Universitario 12 de Octubre, Madrid, Spain
| | - M José Gómez
- Unidad de Uro-Oncología, Hospital Universitario 12 de Octubre, Madrid, Spain
| | - M Luisa Martín
- Unidad de Uro-Oncología, Hospital Universitario 12 de Octubre, Madrid, Spain
| | - Manoli Fernández
- Unidad de Uro-Oncología, Hospital Universitario 12 de Octubre, Madrid, Spain
| | - Daniel Castellano
- Unidad de Uro-Oncología, Hospital Universitario 12 de Octubre, Madrid, Spain
| | - Francisco X Real
- Epithelial Carcinogenesis Group, Molecular Pathology Programme, Centro Nacional de Investigaciones Oncológicas (CNIO) Melchor Fernández Almagro, Madrid, Spain.,Departament de Ciències Experimentals i de la Salut, Universitat Pompeu Fabra, Barcelona, Spain
| | - Jose L Rodriguez-Peralto
- Servicio de Anatomía Patológica, Centro de Investigación Hospital Universitario 12 de Octubre, Madrid, Spain
| | - Federico De La Rosa
- Unidad de Uro-Oncología, Hospital Universitario 12 de Octubre, Madrid, Spain
| | - Jesús M Paramio
- Unidad de Oncología Molecular, CIEMAT (ed70A), Madrid, Spain
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Gupta S, Hau AM, Beach JR, Harwalker J, Mantuano E, Gonias SL, Egelhoff TT, Hansel DE. Mammalian target of rapamycin complex 2 (mTORC2) is a critical determinant of bladder cancer invasion. PLoS One 2013; 8:e81081. [PMID: 24312263 PMCID: PMC3842329 DOI: 10.1371/journal.pone.0081081] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2013] [Accepted: 10/08/2013] [Indexed: 01/12/2023] Open
Abstract
Bladder cancer is the fourth most common cause of cancer in males in the United States. Invasive behavior is a major determinant of prognosis. In this study, we identified mammalian target of rapamycin complex 2 (mTORC2) as a central regulator of bladder cancer cell migration and invasion. mTORC2 activity was assessed by the extent of phosphorylation of Ser473 in AKT and determined to be approximately 5-fold higher in specimens of invasive human bladder cancer as opposed to non-invasive human bladder cancer. The immortalized malignant bladder cell lines, UMUC-3, J82 and T24 demonstrated higher baseline mTORC2 activity relative to the benign bladder papilloma-derived cell line RT4 and the normal urothelial cell line HU1. The malignant bladder cancer cells also demonstrated increased migration in transwell and denudation assays, increased invasion of matrigel, and increased capacity to invade human bladder specimens. Gene silencing of rictor, a critical component of mTORC2, substantially inhibited bladder cancer cell migration and invasion. This was accompanied by a significant decrease in Rac1 activation and paxillin phosphorylation. These studies identify mTORC2 as a major target for neutralizing bladder cancer invasion.
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Affiliation(s)
- Sounak Gupta
- Department of Pathology, University of California San Diego, La Jolla, California, United States of America
| | - Andrew M. Hau
- Department of Pathology, University of California San Diego, La Jolla, California, United States of America
| | - Jordan R. Beach
- Department of Cell Biology, Cleveland Clinic, Cleveland, Ohio, United States of America
| | - Jyoti Harwalker
- Department of Pathology, Cleveland Clinic, Cleveland, Ohio, United States of America
| | - Elisabetta Mantuano
- Department of Pathology, University of California San Diego, La Jolla, California, United States of America
| | - Steven L. Gonias
- Department of Pathology, University of California San Diego, La Jolla, California, United States of America
| | - Thomas T. Egelhoff
- Department of Cell Biology, Cleveland Clinic, Cleveland, Ohio, United States of America
| | - Donna E. Hansel
- Department of Pathology, University of California San Diego, La Jolla, California, United States of America
- *
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93
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Chang CH, Li JR, Shu KH, Fu YC, Wu MJ. Hydronephrotic urine in the obstructed kidney promotes urothelial carcinoma cell proliferation, migration, invasion through the activation of mTORC2-AKT and ERK signaling pathways. PLoS One 2013; 8:e74300. [PMID: 24023933 PMCID: PMC3762757 DOI: 10.1371/journal.pone.0074300] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/01/2013] [Accepted: 07/30/2013] [Indexed: 12/21/2022] Open
Abstract
Obstructive nephropathy is the most common presentation of urothelial carcinoma. The role of the urine in the obstructed kidney namely "hydronephrotic urine" in urothelial carcinoma has not been extensively explored. This study aims to evaluate whether hydronephrotic urine in the obstructed kidney could promote urothelial carcinoma. The hydronephrotic urine was collected from the obstructed kidneys of Sprague-Dawley rats induced by different periods of unilateral ureteral obstruction (UUO). By the inhibition of LY294002 and PD184352, we confirm that hydronephrotic urine promotes urothelial carcinoma cell (T24) and immortalized normal urothelial cells (E6) proliferation, migration and invasion in a dose-dependent manner through the activation of the mTORC2-AKT and ERK signaling pathways. Hydronephrotic urine also increases the expression of cyclin-D2, cyclin-B and CDK2. It also decreases the expression of p27 and p21 in both urothelial carcinoma cells and normal urothelial cells. By the protein array study, we demonstrate that many growth factors which promote tumor cell survival and metastasis are over-expressed in a time-dependent manner in the hydronephrotic urine, including beta-FGF, IFN-γ, PDGF-BB, PIGF, TGF-β, VEGF-A, VEGF-D and EGF. These results suggest that hydronephrotic urine promotes normal and malignant urothelial cells proliferation, migration and invasion, through the activation of the mTORC2-AKT and ERK signaling pathways. Further investigation using live animal models of tumor growth may be needed to clarify aspects of these statements.
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Affiliation(s)
- Chi-Hao Chang
- Institute of Clinical Medicine, National Yang Ming University, Taipei, Taiwan
| | - Jian-Ri Li
- Department of Surgery, Division of Urology, Taichung Veterans General Hospital, Taichung, Taiwan
| | - Kuo-Hsiung Shu
- Department of Medicine, Division of Nephrology, Taichung Veterans General Hospital, Taichung, Taiwan
- School of Medicine, Chung-Shan Medical University, Taichung, Taiwan
| | - Yun-Ching Fu
- Institute of Clinical Medicine, National Yang Ming University, Taipei, Taiwan
- Department of Pediatrics, Taichung Veterans General Hospital, Taichung, Taiwan
| | - Ming-Ju Wu
- Institute of Clinical Medicine, National Yang Ming University, Taipei, Taiwan
- Department of Medicine, Division of Nephrology, Taichung Veterans General Hospital, Taichung, Taiwan
- School of Medicine, Chung-Shan Medical University, Taichung, Taiwan
- Graduate Institute of Clinical Medical Science, School of Medicine, China Medical University, Taichung, Taiwan
- Institute of Biomedical Science, National Chung Hsing University, Taichung, Taiwan
- *E-mail:
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95
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Abstract
As whole-genome sequencing technology rapidly advances, the insights gained from deciphering cancer genomes are shifting the paradigm in the diagnosis and treatment of cancer with the promise of individualized treatment for each patient. Information gained in this way is extensive for certain cancers, but fairly limited in renal cell carcinomas and urothelial carcinoma. Mutations in multiple, potentially druggable genes have been identified in urothelial carcinomas; however, the association between molecular alterations and clinical outcome has not yet been robustly demonstrated. Data in this area are emerging in renal cell carcinoma, leading to the development of targeted agents that have improved overall survival. Unfortunately, these treatments rarely yield complete responses, are not curative, and development of resistance ensues. This Review will focus on the biology of non-hormonally driven urological cancers. We discuss how approaches using whole-genome sequencing can facilitate the discovery of biomarkers of drug sensitivity in both renal cell carcinomas and urothelial carcinomas. For renal cell carcinomas, we will describe how genomic and epigenomic mining has uncovered novel genes and pathways involved in tumorigenesis, tumour classification and mechanisms of resistance in the various subsets of this disease and the potential for exploiting these discoveries in the clinic.
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96
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Clinical applications of recent molecular advances in urologic malignancies: no longer chasing a "mirage"? Adv Anat Pathol 2013; 20:175-203. [PMID: 23574774 DOI: 10.1097/pap.0b013e3182863f80] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
As our understanding of the molecular events leading to the development and progression of genitourologic malignancies, new markers of detection, prognostication, and therapy prediction can be exploited in the management of these prevalent tumors. The current review discusses the recent advances in prostate, bladder, renal, and testicular neoplasms that are pertinent to the anatomic pathologist.
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Chaux A, Compérat E, Varinot J, Hicks J, Lecksell K, Solus J, Netto GJ. High levels of phosphatase and tensin homolog expression are associated with tumor progression, tumor recurrence, and systemic metastases in pT1 urothelial carcinoma of the bladder: a tissue microarray study of 156 patients treated by transurethral resection. Urology 2013; 81:116-22. [PMID: 23273076 DOI: 10.1016/j.urology.2012.09.007] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/01/2012] [Revised: 09/03/2012] [Accepted: 09/07/2012] [Indexed: 12/31/2022]
Abstract
OBJECTIVE To evaluate immunohistochemical expression of phosphatase and tensin homolog (PTEN) and mammalian target of rapamycin (mTOR) pathway members in pT1 urothelial carcinomas treated by transurethral resection and to determine if immunohistochemistry can be used to predict prognosis. METHODS Formalin-fixed, paraffin-embedded tissue samples from 156 patients with pT1 urothelial carcinoma treated by transurethral resection were used to build 5 tissue microarrays. Tissue microarray sections were stained for PTEN, phosphorylated (phos)-AKT, phos-mTOR, phos-S6, eukaryotic translation initiation factor 4E-binding protein 1 (4EBP1), and phos-4EBP1. Patients were monitored after initial treatment (mean, 22.5; median, 16; range, 3-108 months) to detect tumor recurrence, tumor progression, or systemic metastases. RESULTS During follow-up, 101 patients (65%) showed tumor recurrence, 57 showed tumor progression (37%), and 18 showed systemic metastases (12%). Patients with ≥2 lesions at the initial workup had higher proportions and higher hazard ratios of tumor recurrence, tumor progression, and systemic metastases. Complete loss of PTEN expression was observed in 6 patients (4%), and >80% of the mTOR pathway members showed at least focal positivity. Proportions of tumors with higher levels of PTEN immunohistochemical expression were higher in patients with tumor recurrence (P=.001), tumor progression (P=.05), and systemic metastases (P=.001). Proportions of tumors with lower phos-S6 and low phos-4EBP1 levels were higher in patients with tumor recurrence (P≤.05). Proportions were similar for the remaining biomarkers. CONCLUSION Higher levels of PTEN immunohistochemical expression were associated with higher rates of tumor recurrence, tumor progression, and systemic metastases in patients with pT1 urothelial carcinomas treated by transurethral resection.
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Affiliation(s)
- Alcides Chaux
- Department of Pathology, Johns Hopkins Medical Institutions, Baltimore, Maryland 21231, USA
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98
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Molecular aspects of upper tract urothelial carcinoma. Urol Oncol 2013; 32:28.e11-20. [PMID: 23428541 DOI: 10.1016/j.urolonc.2012.10.002] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2012] [Revised: 10/01/2012] [Accepted: 10/03/2012] [Indexed: 02/01/2023]
Abstract
OBJECTIVES Primary upper tract urothelial carcinoma (UTUC) is a relatively rare tumor with up to 60% of cases being muscle invasive at presentation. In this article we review the molecular biology of UTUC, an understanding of which may help to address some of the dilemmas surrounding the diagnosis and treatment of this disease and ultimately lead to the introduction of personalized treatment plans. METHODS The literature search on the molecular aspects of UTUC was performed using the National Library of Medicine database. RESULTS UTUC and urothelial carcinomas of the bladder share many common biological pathways. UTUC are more commonly associated with conditions such as Balkan Endemic Nephropathy and Hereditary Non Polyposis Colon Cancer (HNPCC), the molecular basis of which is now being understood. A large number of potential biomarkers have been studied to help identify robust prognostic markers in UTUC. CONCLUSION Advances in our understanding of the biology of UTUC is may in the future help to identify novel druggable targets, clinically applicable biomarkers and guide treatment of the rare but lethal condition.
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Bambury RM, Rosenberg JE. Advanced Urothelial Carcinoma: Overcoming Treatment Resistance through Novel Treatment Approaches. Front Pharmacol 2013; 4:3. [PMID: 23390417 PMCID: PMC3565214 DOI: 10.3389/fphar.2013.00003] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2012] [Accepted: 01/07/2013] [Indexed: 12/31/2022] Open
Abstract
The current standard of care for metastatic urothelial carcinoma is cisplatin-based chemotherapy but treatment is generally not curative. Mechanisms of resistance to conventional cytotoxic regimens include tumor cell drug efflux pumps, intracellular anti-oxidants, and enhanced anti-apoptotic signaling. Blockade of signaling pathways with small molecule tyrosine kinase inhibitors has produced dramatic responses in subsets of other cancers. Multiple potential signaling pathway targets are altered in Urothelial carcinoma (UC). Blockade of the PI3K/Akt/mTOR pathway may prove efficacious because 21% have activating PI3K mutations and another 30% have PTEN inactivation (which leads to activation of this pathway). The fibroblast growth factor receptor 3 protein may be overactive in 50–60% and agents which block this pathway are under development. Blockade of multiple other pathways including HER2 and aurora kinase also have potential efficacy. Anti-angiogenic and immunotherapy strategies are also under development in UC and are discussed in this review. Novel therapeutic approaches are needed in UC. We review the various strategies under investigation and discuss how best to evaluate and optimize their efficacy.
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Affiliation(s)
- Richard M Bambury
- Memorial Sloan Kettering Cancer Center, Weill Cornell Medical College New York, NY, USA
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100
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Liu T, Jose PA. Gastrin induces sodium-hydrogen exchanger 3 phosphorylation and mTOR activation via a phosphoinositide 3-kinase-/protein kinase C-dependent but AKT-independent pathway in renal proximal tubule cells derived from a normotensive male human. Endocrinology 2013; 154:865-75. [PMID: 23275470 PMCID: PMC3548178 DOI: 10.1210/en.2012-1813] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
Gastrin is natriuretic, but its renal molecular targets and signal transduction pathways are not fully known. In this study, we confirmed the existence of CCKBR (a gastrin receptor) in male human renal proximal tubule cells and discovered that gastrin induced S6 phosphorylation, a downstream component of the phosphatidylinositol 3 kinase (PI3 kinase)-mammalian target of rapamycin pathway. Gastrin also increased the phosphorylation of sodium-hydrogen exchanger 3 (NHE3) at serine 552, caused its internalization, and decreased its expression at the cell surface and NHE activity. The phosphorylation of NHE3 and S6 was dependent on PI3 kinases because it was blocked by 2 different PI3-kinase inhibitors, wortmannin and LY294,002. The phosphorylation of NHE3 and S6 was not affected by the protein kinase A inhibitor H-89 but was blocked by a pan-PKC (chelerythrine) and a conventional PKC (cPKC) inhibitor (Gö6976) (10 μM) and an intracellular calcium chelator, 1,2-bis-(o-aminophenoxy)ethane-N,N,N',N'-tetraacetic acid, tetra(acetoxymethyl)-ester, suggesting the importance of cPKC and intracellular calcium in the gastrin signaling pathway. The cPKC involved was probably PKCα because it was phosphorylated by gastrin. The gastrin-mediated phosphorylation of NHE3, S6, and PKCα was via phospholipase C because it was blocked by a phospholipase C inhibitor, U73122 (10 μM). The phosphorylation (activation) of AKT, which is usually upstream of mammalian target of rapamycin in the classic PI3 kinase-AKT-p70S6K signaling pathway, was not affected, suggesting that the gastrin-induced phosphorylation of NHE3 and S6 is dependent on both PI3 kinase and PKCα but not AKT.
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Affiliation(s)
- Tianbing Liu
- Center for Molecular Physiology Research, Children's Research Institute, Children's National Medical Center, 111 Michigan Avenue, Washington, DC 20010, USA.
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