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Jung J, Kim NH, Kwon M, Park J, Lim D, Kim Y, Gil W, Cheong YH, Park SA. The inhibitory effect of Gremlin-2 on adipogenesis suppresses breast cancer cell growth and metastasis. Breast Cancer Res 2023; 25:128. [PMID: 37880751 PMCID: PMC10599028 DOI: 10.1186/s13058-023-01732-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2023] [Accepted: 10/17/2023] [Indexed: 10/27/2023] Open
Abstract
BACKGROUND Gremlin-1 (GREM1) and Gremlin-2 (GREM2) are bone morphogenetic protein antagonists that play important roles in organogenesis, tissue differentiation, and tissue homeostasis. Although GREM1 has been reported to be involved in promoting various cancers, little has been reported about effects of GREM2 on cancer. Recently, it has been reported that GREM2 can inhibit adipogenesis in adipose-derived stromal/stem cells. However, as an inhibitor of adipogenesis, the role of GREM2 in cancer progression is not well understood yet. METHODS Pre-adipocyte 3T3-L1 cells overexpressing mock or Grem2 were established using a lentiviral transduction system and differentiated into adipocytes-mock and adipocytes-Grem2, respectively. To investigate the effect of adipocyte-Grem2 on breast cancer cells, we analyzed the proliferative and invasion abilities of spheroids using a 3D co-culture system of breast cancer cells and adipocytes or conditioned medium (CM) of adipocytes. An orthotopic breast cancer mouse model was used to examine the role of adipocytes-Grem2 in breast cancer progression. RESULTS Grem2 overexpression suppressed adipogenesis of 3T3-L1 cells. Proliferative and invasion abilities of spheroids formed by co-culturing MTV/TM-011 breast cancer cells and adipocytes-Grem2 were significantly reduced compared to those of spheroids formed by co-culturing MTV/TM-011 cells and adipocytes-mock. Compared to adipocytes-mock, adipocytes-Grem2 showed decreased mRNA expression of several adipokines, notably IL-6. The concentration of IL-6 in the CM of these cells was also decreased. Proliferative and invasive abilities of breast cancer cells reduced by adipocytes-Grem2 were restored by IL-6 treatment. Expression levels of vimentin, slug, and twist1 in breast cancer cells were decreased by treatment with CM of adipocytes-Grem2 but increased by IL-6 treatment. In orthotopic breast cancer mouse model, mice injected with both MTV/TM-011 cells and adipocytes-Grem2 showed smaller primary tumors and lower lung metastasis than controls. However, IL-6 administration increased both the size of primary tumor and the number of metastatic lung lesions, which were reduced by adipocytes-Grem2. CONCLUSIONS Our study suggests that GREM2 overexpression in adipocytes can inhibit adipogenesis, reduce the expression and secretion of several adipokines, including IL-6, and ultimately inhibit breast cancer progression.
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Affiliation(s)
- Jiwoo Jung
- Department of Medical Sciences, Graduate School, Soonchunhyang University, Asan-si, 31538, Republic of Korea
| | - Na Hui Kim
- Department of Medical Sciences, Graduate School, Soonchunhyang University, Asan-si, 31538, Republic of Korea
| | - Minji Kwon
- Department of Medical Sciences, Graduate School, Soonchunhyang University, Asan-si, 31538, Republic of Korea
| | - Jayeon Park
- Department of Biomedical Laboratory Science, College of Medical Sciences, Soonchunhyang University, Asan-si, 31538, Republic of Korea
| | - Dayeon Lim
- Department of Biomedical Laboratory Science, College of Medical Sciences, Soonchunhyang University, Asan-si, 31538, Republic of Korea
| | - Youjin Kim
- Department of Biomedical Laboratory Science, College of Medical Sciences, Soonchunhyang University, Asan-si, 31538, Republic of Korea
| | - World Gil
- Department of Biomedical Laboratory Science, College of Medical Sciences, Soonchunhyang University, Asan-si, 31538, Republic of Korea
| | - Ye Hwang Cheong
- Drug Discovery Research Laboratories, Dong-A ST Co., Ltd., Yongin, 17073, Republic of Korea
| | - Sin-Aye Park
- Department of Medical Sciences, Graduate School, Soonchunhyang University, Asan-si, 31538, Republic of Korea.
- Department of Biomedical Laboratory Science, College of Medical Sciences, Soonchunhyang University, Asan-si, 31538, Republic of Korea.
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Interleukin-6 Signaling in Triple Negative Breast Cancer Cells Elicits the Annexin A1/Formyl Peptide Receptor 1 Axis and Affects the Tumor Microenvironment. Cells 2022; 11:cells11101705. [PMID: 35626741 PMCID: PMC9139391 DOI: 10.3390/cells11101705] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2021] [Revised: 05/06/2022] [Accepted: 05/16/2022] [Indexed: 11/17/2022] Open
Abstract
Annexin A1 (AnxA1) is a pleiotropic protein that exerts essential roles in breast cancer (BC) growth and aggressiveness. In our previous work, we described the autocrine signaling of AnxA1 through formyl peptide receptor 1 (FPR1) in the triple-negative (TN) BC cell line, MDA-MB-231. Here, we aimed to describe the interaction between the AnxA1/FPR1 and the Interleukin-6 (IL-6) signaling pathways and their role in the tumor microenvironment (TME). First, we demonstrated that AnxA1 and IL-6 expression levels are correlated in BC tissue samples. In three TNBC cell lines, overexpression of both AnxA1 and IL-6 was also identified. Next, we inhibited FPR1, the IL-6 receptor and STAT3 in both MDA-MB-231 and MDA-MB-157 cells. The FPR1 inhibition led to increased levels of IL-6 and secreted AnxA1 in both cell lines. On the other side, inhibition of the IL-6 receptor or STAT3 led to the impairment of AnxA1 secretion, suggesting the essential role of the IL-6 signaling cascade in the activation of the AnxA1/FPR1 autocrine axis. Finally, we described the interaction between IL-6 and the AnxA1/FPR1 pathways and their role on the TME by analyzing the effect of supernatants derived from MDA-MB-231 and MDA-MB-157 cells under the inhibition of FPR1 or IL-6 signaling on fibroblast cell motility.
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Zhang R, Wang H, Li E, Wu Y, Wen Y, Li C, Liao B, Ma Q. Quantitative phosphoproteomic analysis reveals chemoresistance-related proteins and signaling pathways induced by rhIL-6 in human osteosarcoma cells. Cancer Cell Int 2021; 21:581. [PMID: 34717622 PMCID: PMC8557500 DOI: 10.1186/s12935-021-02286-z] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2021] [Accepted: 10/20/2021] [Indexed: 12/13/2022] Open
Abstract
Background IL-6 plays a pivotal role in resistance to chemotherapeutics, including lobaplatin. However, the underlying mechanisms are still unclear. This study was to investigate the changes in phosphoproteins and their related signaling pathways in the process of IL-6-induced chemoresistance to lobaplain in osteosarcoma cells. Methods We performed a quantitative phosphoproteomic analysis of the response of SaOS-2 osteosarcoma cells to recombinant human IL-6 (rhIL-6) intervention prior to lobaplatin treatment. The cells were divided into the control group (Con), the lobaplatin group (Lob), and the rhIL-6-and-lobaplatin group (IL-6). Three biological replicates of each group were included. The differentially expressed phosphoproteins were subjected to Gene Ontology (GO) and Kyoto Encyclopedia of Genes and Genomes (KEGG) enrichment analyses. Netphos 3.1 was used for the prediction of kinases, and STRING was used for the visualization of protein–protein interactions. The conserved motifs surrounding the phosphorylated residues were analyzed using the motif-x algorithm. Western blot analysis was performed to verify the differential expression of p-FLNC, its predicted kinase and the related signaling pathway. The results of the bioinformatic analysis were validated by immunohistochemical staining of clinical specimens. Results In total, 3373 proteins and 12,183 peptides, including 3232 phosphorylated proteins and 11,358 phosphorylated peptides, were identified and quantified. Twenty-three significantly differentially expressed phosphoproteins were identified in the comparison between the IL-6 and Lob groups, and p-FLNC ranked second among these phosphoproteins. GO and KEGG analyses revealed the pivotal role of mitogen-activated protein kinase signaling in drug resistance induced by rhIL-6. Four motifs, namely, -SPxxK-, -RxxSP-, -SP-, and -SPK-, demonstrated higher expression in the IL-6 group than in the Lob group. The western blot analysis results verified the higher expression of p-FLNC, AKT1, and p-ERK and the lower expression of p-JNK in the IL-6 group than in the Con and Lob groups. The immunohistochemical staining results showed that p-FLNC, AKT1 and p-ERK1/2 were highly expressed in platinum-resistant clinical specimens but weakly expressed in platinum-sensitive specimens, and platinum-resistant osteosarcoma specimens demonstrated weak expression of p-JNK. Conclusions This phosphoproteomic study is the first to reveal the signature associated with rhIL-6 intervention before lobaplatin treatment in human osteosarcoma cells. p-FLNC, AKT1, and MAPK signaling contributes to resistance to lobaplatin in osteosarcoma SaOS-2 cells and may represent molecular targets to overcome osteosarcoma chemoresistance. Supplementary Information The online version contains supplementary material available at 10.1186/s12935-021-02286-z.
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Affiliation(s)
- Rui Zhang
- Orthopedic Oncology Institute, Department of Orthopedic Surgery, Tangdu Hospital, Fourth Military Medical University, Xi'an, China
| | - Huan Wang
- Orthopedic Oncology Institute, Department of Orthopedic Surgery, Tangdu Hospital, Fourth Military Medical University, Xi'an, China
| | - Erliang Li
- Orthopedic Oncology Institute, Department of Orthopedic Surgery, Tangdu Hospital, Fourth Military Medical University, Xi'an, China
| | - Yonghong Wu
- Orthopedic Oncology Institute, Department of Orthopedic Surgery, Tangdu Hospital, Fourth Military Medical University, Xi'an, China
| | - Yanhua Wen
- Orthopedic Oncology Institute, Department of Orthopedic Surgery, Tangdu Hospital, Fourth Military Medical University, Xi'an, China
| | - Chenyu Li
- Orthopedic Oncology Institute, Department of Orthopedic Surgery, Tangdu Hospital, Fourth Military Medical University, Xi'an, China
| | - Bo Liao
- Orthopedic Oncology Institute, Department of Orthopedic Surgery, Tangdu Hospital, Fourth Military Medical University, Xi'an, China.
| | - Qiong Ma
- Orthopedic Oncology Institute, Department of Orthopedic Surgery, Tangdu Hospital, Fourth Military Medical University, Xi'an, China.
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Wang H, Li B, Yan K, Wu Y, Wen Y, Liu Y, Fan P, Ma Q. Protein and Signaling Pathway Responses to rhIL-6 Intervention Before Lobaplatin Treatment in Osteosarcoma Cells. Front Oncol 2021; 11:602712. [PMID: 33791202 PMCID: PMC8006349 DOI: 10.3389/fonc.2021.602712] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2020] [Accepted: 02/16/2021] [Indexed: 01/28/2023] Open
Abstract
Lobaplatin is a third-generation platinum-based antineoplastic agent and is widely used for osteosarcoma treatment before and after tumor removal. However, treatment failure often results from lobaplatin drug resistance. In our study, we found that SaOS-2 and SOSP-9607 osteosarcoma cells became less sensitive to lobaplatin after treatment with exogenous interleukin (IL)-6. Quantitative proteomic analysis was performed to elucidate the underlying mechanism in SaOS-2 osteosarcoma cells. Cells were divided into a control group (CG), a lobaplatin treatment group (LG), a recombinant human IL-6 (rhIL-6), and a lobaplatin treatment group (rhILG). We performed three biological replicates in each group to compare the differential protein expression between groups using a tandem mass tag (TMT) labeling technology based on liquid chromatography-tandem mass spectrometry (LC-MS/MS). A total of 1,313 proteins with significant differential expression was identified and quantified. The general characteristics of the significantly enriched proteins were identified by Gene Ontology (GO) and Kyoto Encyclopedia of Genes and Genomes (KEGG) enrichment analyses, and protein-protein interaction (PPI) analysis was conducted using IntAct and STRING. In total, 31 proteins were further verified by parallel reaction monitoring (PRM), among which ras GTPase-activating protein-binding protein 1 (G3BP1), fragile X mental retardation syndrome-related protein 1 (hFXR1p), and far upstream element-binding protein 1 (FUBP1) were significantly differentially expressed. Immunohistochemistry results showed that these three proteins are highly expressed in specimens from platinum-resistant osteosarcoma patients, while the proteins are negatively or weakly expressed in specimens from platinum-sensitive osteosarcoma patients. The immunofluorescence staining results were in accord with the immunohistochemistry staining results. siRNA knockdown of FUBP1 showed a strikingly decreased IC50 value for lobaplatin in FUBP1-silenced cells, which verified the role of FUBP1 in the drug susceptibility of osteosarcoma and the potential therapeutic value for increasing the sensitivity to lobaplatin. This is the first proteomic study on a rhIL-6 intervention before lobaplatin treatment in osteosarcoma cells.
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Affiliation(s)
- Huan Wang
- Orthopedic Oncology Institute, Department of Orthopedic Surgery, Tangdu Hospital, Fourth Military Medical University, Xi'an, China
| | - Bin Li
- Orthopedic Oncology Institute, Department of Orthopedic Surgery, Tangdu Hospital, Fourth Military Medical University, Xi'an, China
| | - Kang Yan
- Orthopedic Oncology Institute, Department of Orthopedic Surgery, Tangdu Hospital, Fourth Military Medical University, Xi'an, China
| | - Yonghong Wu
- Orthopedic Oncology Institute, Department of Orthopedic Surgery, Tangdu Hospital, Fourth Military Medical University, Xi'an, China
| | - Yanhua Wen
- Orthopedic Oncology Institute, Department of Orthopedic Surgery, Tangdu Hospital, Fourth Military Medical University, Xi'an, China
| | - Yunyan Liu
- Orthopedic Oncology Institute, Department of Orthopedic Surgery, Tangdu Hospital, Fourth Military Medical University, Xi'an, China
| | - Pei Fan
- Department of Orthopedics, The Second Affiliated Hospital of Wenzhou Medical University, Yuying Children's Hospital, Wenzhou, China
| | - Qiong Ma
- Orthopedic Oncology Institute, Department of Orthopedic Surgery, Tangdu Hospital, Fourth Military Medical University, Xi'an, China
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Li X, He S, Tian Y, Weiss RM, Martin DT. Synergistic inhibition of GP130 and ERK signaling blocks chemoresistant bladder cancer cell growth. Cell Signal 2019; 63:109381. [PMID: 31374291 DOI: 10.1016/j.cellsig.2019.109381] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2019] [Revised: 07/26/2019] [Accepted: 07/29/2019] [Indexed: 02/07/2023]
Abstract
Multidrug resistance is a major treatment obstacle for recurrent and metastatic bladder cancer, which often leads to disease progression and poor clinical outcome. Although overexpression of interleukin-6 (IL-6) appears to play a critical role in the development of chemotherapy resistance, inhibitors for IL-6 alone have not improved clinical outcomes. Since the IL-6/IL-6R/GP130 complex is involved in multidrug resistance, another strategy would be to focus on glycoprotein-130 (GP130) since it dimerizes with IL-6R/CD26 as a membrane-bound signaling transducer receptor and initiates subsequent signaling activation and may be a potential therapeutic target. Currently, the role of GP130 in chemoresistant bladder cancer is unknown. In the present study, we demonstrate that GP130 is over-expressed in cisplatin and gemcitabine-resistant bladder cancer cells, and that the inhibition of GP130 expression significantly reduces cell viability, survival and migration. Downstream of GP130 is PI3K/AKT/mTOR signaling, which is inactivated by SC144, a GP130 inhibitor. However, Raf/MEK/ERK signaling, which also is downstream of GP130 is activated by SC144. This activation is likely based on a mTOR/S6K1/PI3K/ERK negative feedback loop, which is presumed to counteract the inhibitory effect of SC144 on tumor aggressiveness. Blocking both GP130 and pERK resulted in synergistic inhibition of cytotoxicity, clonal survival rates and cell migration in our chemotherapy resistant bladder cancer cells. This vertical inhibition offers a novel therapeutic strategy for targeting human chemoresistant bladder cancer.
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Affiliation(s)
- Xuanhao Li
- Department of Urology, Yale University, New Haven, CT, USA
| | - Shanshan He
- Department of Urology, Yale University, New Haven, CT, USA
| | - Ye Tian
- Department of Urology, Beijing Friendship Hospital, Capital Medical University, Beijing, China
| | - Robert M Weiss
- Department of Urology, Yale University, New Haven, CT, USA
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Mumin NH, Drobnitzky N, Patel A, Lourenco LM, Cahill FF, Jiang Y, Kong A, Ryan AJ. Overcoming acquired resistance to HSP90 inhibition by targeting JAK-STAT signalling in triple-negative breast cancer. BMC Cancer 2019; 19:102. [PMID: 30678647 PMCID: PMC6345040 DOI: 10.1186/s12885-019-5295-z] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2018] [Accepted: 01/07/2019] [Indexed: 12/27/2022] Open
Abstract
Background Due to the lack of effective therapies and poor prognosis in TNBC (triple-negative breast cancer) patients, there is a strong need to develop effective novel targeted therapies for this subtype of breast cancer. Inhibition of heat shock protein 90 (HSP90), a conserved molecular chaperone that is involved in the regulation of oncogenic client proteins, has shown to be a promising therapeutic approach for TNBC. However, both intrinsic and acquired resistance to HSP90 inhibitors (HSP90i) limits their effectiveness in cancer patients. Methods We developed models of acquired resistance to HSP90i by prolonged exposure of TNBC cells to HSP90i (ganetespib) in vitro. Whole transcriptome profiling and a 328-compound bioactive small molecule screen were performed on these cells to identify the molecular basis of acquired resistance to HSP90i and potential therapeutic approaches to overcome resistance. Results Among a panel of seven TNBC cell lines, the most sensitive cell line (Hs578T) to HSP90i was selected as an in vitro model to investigate acquired resistance to HSP90i. Two independent HSP90i-resistant clones were successfully isolated which both showed absence of client proteins degradation, apoptosis induction and G2/M cell cycle arrest after treatment with HSP90i. Gene expression profiling and pathway enrichment analysis demonstrate significant activation of the survival JAK-STAT signalling pathway in both HSP90i-resistant clones, possibly through IL6 autocrine signalling. A bioactive small molecule screen also demonstrated that the HSP90i-resistant clones showed selective sensitivity to JAK2 inhibition. Inhibition of JAK and HSP90 caused higher induction of apoptosis, despite prior acquired resistance to HSP90i. Conclusions Acquired resistance to HSP90i in TNBC cells is associated with an upregulated JAK-STAT signalling pathway. A combined inhibition of the JAK-STAT signalling pathway and HSP90 could overcome this resistance. The benefits of the combined therapy could be explored further for the development of effective targeted therapy in TNBC patients. Electronic supplementary material The online version of this article (10.1186/s12885-019-5295-z) contains supplementary material, which is available to authorized users.
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Affiliation(s)
| | | | - Agata Patel
- Department of Oncology, University of Oxford, Oxford, UK
| | | | - Fiona F Cahill
- Department of Oncology, University of Oxford, Oxford, UK
| | - Yanyan Jiang
- Department of Oncology, University of Oxford, Oxford, UK
| | - Anthony Kong
- Institute of Cancer and Genomic Sciences, University of Birmingham, Birmingham, UK
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Harmer D, Falank C, Reagan MR. Interleukin-6 Interweaves the Bone Marrow Microenvironment, Bone Loss, and Multiple Myeloma. Front Endocrinol (Lausanne) 2019; 9:788. [PMID: 30671025 PMCID: PMC6333051 DOI: 10.3389/fendo.2018.00788] [Citation(s) in RCA: 166] [Impact Index Per Article: 33.2] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/30/2018] [Accepted: 12/14/2018] [Indexed: 12/14/2022] Open
Abstract
The immune system is strongly linked to the maintenance of healthy bone. Inflammatory cytokines, specifically, are crucial to skeletal homeostasis and any dysregulation can result in detrimental health complications. Interleukins, such as interleukin 6 (IL-6), act as osteoclast differentiation modulators and as such, must be carefully monitored and regulated. IL-6 encourages osteoclastogenesis when bound to progenitors and can cause excessive osteoclastic activity and osteolysis when overly abundant. Numerous bone diseases are tied to IL-6 overexpression, including rheumatoid arthritis, osteoporosis, and bone-metastatic cancers. In the latter, IL-6 can be released with growth factors into the bone marrow microenvironment (BMM) during osteolysis from bone matrix or from cancer cells and osteoblasts in an inflammatory response to cancer cells. Thus, IL-6 helps create an ideal microenvironment for oncogenesis and metastasis. Multiple myeloma (MM) is a blood cancer that homes to the BMM and is strongly tied to overexpression of IL-6 and bone loss. The roles of IL-6 in the progression of MM are discussed in this review, including roles in bone homing, cancer-associated bone loss, disease progression and drug resistance. MM disease progression often includes the development of drug-resistant clones, and patients commonly struggle with reoccurrence. As such, therapeutics that specifically target the microenvironment, rather than the cancer itself, are ideal and IL-6, and its myriad of downstream signaling partners, are model targets. Lastly, current and potential therapeutic interventions involving IL-6 and connected signaling molecules are discussed in this review.
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Affiliation(s)
- Danielle Harmer
- Reagan Laboratory, Maine Medical Center Research Institute, Scarborough, ME, United States
- Graduate School of Biomedical Sciences and Engineering, University of Maine, Orono, ME, United States
| | - Carolyne Falank
- Reagan Laboratory, Maine Medical Center Research Institute, Scarborough, ME, United States
| | - Michaela R. Reagan
- Reagan Laboratory, Maine Medical Center Research Institute, Scarborough, ME, United States
- Graduate School of Biomedical Sciences and Engineering, University of Maine, Orono, ME, United States
- School of Medicine, Tufts University, Boston, MA, United States
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Anticancer effects of alloxanthoxyletin and fatty acids esters - In vitro study on cancer HTB-140 and A549 cells. Biomed Pharmacother 2018; 110:618-630. [PMID: 30544062 DOI: 10.1016/j.biopha.2018.12.005] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2018] [Revised: 11/28/2018] [Accepted: 12/02/2018] [Indexed: 01/16/2023] Open
Abstract
Alloxanthoxyletin, a natural occurring pyranocoumarin isolated from a number of plant sources, such as family of Rutaceae, and its synthetic derivatives show cytotoxic and antitumor activities. In the present study new eleven esters of alloxanthoxyletin and fatty acids were synthesized and evaluated for their anticancer toxicity. The structures of the compounds were confirmed by Proton Nuclear Magnetic Resonance (1H NMR), Carbon-13 Nuclear Magnetic Resonance (13C NMR) and High Resolution Mass Spectrometry (HRMS) analyses. For all compounds 3-(4,5-dimethylthiazolyl-2)-2,5-diphenyltetrazolium bromide (MTT) assay was used to determine the cytotoxic effect on human melanoma cells (HTB-140), human epithelial lung carcinoma cells (A549) and human keratinocyte line (HaCaT). For the most active compounds (8-11) lactate dehydrogenase (LDH) assay to assess the level of cell damage as well as migration inhibition assay were performed. To explain the basic mechanism of cell death induction, the effect of derivatives 8-11 on early and late apoptosis in Annexin V-FITC/7-AAD flow cytometry analysis was investigated. The results indicate that human melanoma cells (HTB-140) and human epithelial lung carcinoma cells (A549) were more sensitive to new alloxanthoxyletin derivatives exposure compared to human keratinocytes (HaCaT). Both, the cytotoxicity and the migration tests showed a concentration-dependent inhibition of cell growth, although with a different degree of efficacy. Tested compounds induced apoptosis in cancer cells, however, derivatives 8, 9, 10 and 11 were found to be much more potent inducers of early apoptosis in HTB-140 cells than in A549 and HaCaT cells. To establish the potent mechanism of action of alloxanthoxyletin derivatives 8, 9, 10 and 11 on HaCaT, A549 and HTB-140 cells, the level of IL-6 was measured. Our results indicate, that tested compounds significantly decrease the release of IL-6 for all cancer cell lines.
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Wang Y, Zong X, Mitra S, Mitra AK, Matei D, Nephew KP. IL-6 mediates platinum-induced enrichment of ovarian cancer stem cells. JCI Insight 2018; 3:122360. [PMID: 30518684 PMCID: PMC6328027 DOI: 10.1172/jci.insight.122360] [Citation(s) in RCA: 70] [Impact Index Per Article: 11.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2018] [Accepted: 10/29/2018] [Indexed: 12/19/2022] Open
Abstract
In high-grade serous ovarian cancer (OC), chemotherapy eliminates the majority of tumor cells, leaving behind residual tumors enriched in OC stem cells (OCSC). OCSC, defined as aldehyde dehydrogenase-positive (ALDH+), persist and contribute to tumor relapse. Inflammatory cytokine IL-6 is elevated in residual tumors after platinum treatment, and we hypothesized that IL-6 plays a critical role in platinum-induced OCSC enrichment. We demonstrate that IL-6 regulates stemness features of OCSC driven by ALDH1A1 expression and activity. We show that platinum induces IL-6 secretion by cancer-associated fibroblasts in the tumor microenvironment, promoting OCSC enrichment in residual tumors after chemotherapy. By activating STAT3 and upregulating ALDH1A1 expression, IL-6 treatment converted non-OCSC to OCSC. Having previously shown altered DNA methylation in OCSC, we show here that IL-6 induces DNA methyltransferase 1 (DNMT1) expression and the hypomethylating agent (HMA) guadecitabine induced differentiation of OCSC and reduced - but did not completely eradicate - OCSC. IL-6 neutralizing antibody (IL-6-Nab) combined with HMA fully eradicated OCSC, and the combination blocked IL-6/IL6-R/pSTAT3-mediated ALDH1A1 expression and eliminated OCSC in residual tumors that persisted in vivo after chemotherapy. We conclude that IL-6 signaling blockade combined with an HMA can eliminate OCSC after platinum treatment, supporting this strategy to prevent tumor recurrence after standard chemotherapy.
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Affiliation(s)
- Yinu Wang
- Medical Sciences, Cell, Molecular and Cancer Biology Program, Indiana University School of Medicine, Indiana University Bloomington (IUB), Bloomington, Indiana, USA
- Department of Obstetrics and Gynecology, Northwestern University Feinberg School of Medicine, Chicago, Illinois, USA
| | - Xingyue Zong
- Medical Sciences, Cell, Molecular and Cancer Biology Program, Indiana University School of Medicine, Indiana University Bloomington (IUB), Bloomington, Indiana, USA
| | - Sumegha Mitra
- Department of Obstetrics and Gynecology, Indiana University School of Medicine
| | - Anirban Kumar Mitra
- Medical Sciences, Cell, Molecular and Cancer Biology Program, Indiana University School of Medicine, Indiana University Bloomington (IUB), Bloomington, Indiana, USA
- Indiana University Melvin and Bren Simon Cancer Center, and
- Medical and Molecular Genetics, Indiana University School of Medicine, Indiana University, Indianapolis, Indiana, USA
| | - Daniela Matei
- Department of Obstetrics and Gynecology, Northwestern University Feinberg School of Medicine, Chicago, Illinois, USA
| | - Kenneth P. Nephew
- Medical Sciences, Cell, Molecular and Cancer Biology Program, Indiana University School of Medicine, Indiana University Bloomington (IUB), Bloomington, Indiana, USA
- Indiana University Melvin and Bren Simon Cancer Center, and
- Department of Cellular and Integrative Physiology Indiana University School of Medicine, Indianapolis, Indiana, USA
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Abstract
Epidermal growth factor receptor (EGFR) is a transmembrane glycoprotein and a member of the tyrosine kinase superfamily receptor. Gliomas are tumors originating from glial cells, which show a range of aggressiveness depending on grade and stage. Many EGFR gene alterations have been identified in gliomas, especially glioblastomas, including amplifications, deletions and single nucleotide polymorphisms (SNPs). Glioblastomas are discussed as a separate entity due to their high correlation with EGFR mutants and the reported association of the latter with survival and response to treatment in this glioma subgroup. This review is a comprehensive report of EGFR gene alterations and their relations with several clinical factors in glioblastomas and other gliomas. It covers all EGFR gene alterations including point mutations, SNPs, methylations, copy number variations and amplifications, assessed with regard to different clinical variables, including response to therapy and survival. This review also discusses the current prognostic status of EGFR in glioblastomas and other gliomas, and highlights gaps in previous studies. This serves as an update for the medical community about the role of EGFR gene alterations in gliomas and specifically glioblastomas, as a means for targeted treatment and prognosis.
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Cojocaru E, Parkinson CA, Brenton JD. Personalising Treatment for High-Grade Serous Ovarian Carcinoma. Clin Oncol (R Coll Radiol) 2018; 30:515-524. [PMID: 29934103 DOI: 10.1016/j.clon.2018.05.008] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2018] [Accepted: 05/22/2018] [Indexed: 12/19/2022]
Abstract
Ovarian cancer is a heterogeneous group of cancers that differ by cell of origin and genomic features. High-grade serous ovarian cancer (HGSOC) is the commonest histiotype and is characterized by extreme genomic complexity and dysregulation of DNA damage repair pathways, particularly homologous recombination deficiency. New insights from molecular profiling into homologous recombination deficiency now offers the credible possibility of personalizing treatment choices for women with HGSOC using poly(ADP-ribose) polymerase inhibitor (PARP) therapy. Although the presence of tumour infiltrating lymphocytes (TILs) in the microenvironment is associated with improved survival in HGSOC, the role of anti-angiogenic and immune checkpoint inhibitor therapy remains unclear. PARP inhibition combined with immunotherapy is an exciting combination strategy for future therapeutic development for women with advanced HGSOC.
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Affiliation(s)
- E Cojocaru
- Cambridge University Hospitals, Department of Oncology, Cambridge, UK
| | - C A Parkinson
- Cambridge University Hospitals, Department of Oncology, Cambridge, UK; Cancer Research UK Cambridge Institute, University of Cambridge, Cambridge, UK
| | - J D Brenton
- Cambridge University Hospitals, Department of Oncology, Cambridge, UK; Cancer Research UK Cambridge Institute, University of Cambridge, Cambridge, UK.
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Karsten MM, Enders S, Knabl J, Kirn V, Düwell P, Rack B, Blohmer JU, Mayr D, Dian D. Biologic meshes and synthetic meshes in cancer patients: a double-edged sword: differences in production of IL-6 and IL-12 caused by acellular dermal matrices in human immune cells. Arch Gynecol Obstet 2018; 297:1265-1270. [PMID: 29417284 DOI: 10.1007/s00404-018-4710-z] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2017] [Accepted: 02/01/2018] [Indexed: 01/31/2023]
Abstract
PURPOSE In 2005, Breuing et al. first described the use of acellular dermal matrices (ADMs) in breast cancer patients. ADMs are assumed to be safe to use in an oncologic setting, but data from controlled studies are still needed. Here, we investigate the effects of ADMs on the production of interleukin (IL)-6 and IL-12, key regulators of immune suppression and activation. METHODS Strattice (ST), CollaMend (CM), and Biodesign (BD) biologic meshes and TiLoop, a synthetic mesh (TL), were used in this study. We isolated myeloid dendritic cells (MDCs), untouched plasmacytoid dendritic cells (pDCs), naïve B cells, and CD8+ T cells and co-cultured these cells with either the biologic meshes or TL. As positive controls, we used CpG ODN 2216 or lipopolysaccharide (LPS). The cytokine concentrations of IL-12p70 and IL-6 were determined after 7 days using sandwich ELISA sets. RESULTS There were highly significant differences between the ADMs and TL in terms of their ability to stimulate immunologic responses. IL-6 expression was significantly increased in B cells (p = 0.0006131) and T cells (p = 0.00418) when comparing TL and ADMs. We also identified significant differences in IL-12 production by B cells (p = 0.0166) and T cells (p = 0.003636) when comparing TL and ADMs. CONCLUSIONS Despite the assumed lack of an immunological response to ADMs, in our experimental study, human immune cells reacted with significantly different cytokine profiles. These findings may have implications for the potential activation or suppression of effector cells in cancer patients and could explain some of the post clinical post surgical signs of ADMS like skin rush and seroma.
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Affiliation(s)
- Maria Margarete Karsten
- Klinik für Gynäkologie und Brustzentrum, Charité Universitätsmedizin Berlin, Campus Charité Mitte, Charitéplatz 1, 10117, Berlin, Germany.
| | - Sabine Enders
- Klinik für Frauenheilkunde, Ludwig-Maximilians-Universität München, Munich, Germany
| | - Julia Knabl
- Klinik für Frauenheilkunde, Ludwig-Maximilians-Universität München, Munich, Germany
| | - Verena Kirn
- Klinik und Poliklinik für Frauenheilkunde, Universität Köln, Cologne, Germany
| | - Peter Düwell
- Abteilung für klinische Pharmakologie, Ludwig-Maximilians-Universität München, Munich, Germany
| | - Brigitte Rack
- Klinik für Frauenheilkunde, Ludwig-Maximilians-Universität München, Munich, Germany
| | - Jens-Uwe Blohmer
- Klinik für Gynäkologie und Brustzentrum, Charité Universitätsmedizin Berlin, Campus Charité Mitte, Charitéplatz 1, 10117, Berlin, Germany
| | - Doris Mayr
- Abteilung für Pathologie, Ludwig-Maximilians-Universität München, Munich, Germany
| | - Darius Dian
- Klinik für Frauenheilkunde, Ludwig-Maximilians-Universität München, Munich, Germany
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13
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El Okle OS, El Euony OI, Khafaga AF, Lebda MA. Thiamethoxam induced hepatotoxicity and pro-carcinogenicity in rabbits via motivation of oxidative stress, inflammation, and anti-apoptotic pathway. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2018; 25:4678-4689. [PMID: 29197058 DOI: 10.1007/s11356-017-0850-0] [Citation(s) in RCA: 39] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/13/2017] [Accepted: 11/27/2017] [Indexed: 06/07/2023]
Abstract
Thiamethoxam (TMX) is a non-mutagenic neonicotinoid insecticide that is widely used to combat different types of insects. The hepatotoxicity and carcinogenicity of TMX have been approved previously in mice but not in rats. However, the TMX-induced hepatotoxic and pro-carcinogenic effects on rabbits remain unclear. The present study elucidated the roles of oxidative stress, pro-inflammatory cytokines, and apoptosis-related genes in the hepatotoxic and carcinogenic effects of TMX on rabbits. Sixteen male rabbits were equally divided into two groups; eight rabbits orally treated with TMX at a dose of 250 mg/kg b.w for 90 successive days. Hepatotoxic effects of TMX were evidenced by attenuation of liver enzyme activities, elevation of bilirubin levels, and alterations in the hepatic architecture, including hepatocyte death by necrosis and apoptosis, lymphocyte infiltration and fibrosis. TMX induced oxidative stress, as evidenced by the significant increases in malondialdehyde levels and antioxidant enzyme (glutathione transferase and catalase) activities along with a decrease in glutathione levels. TMX also up-regulated the mRNA levels of interleukin-6 (1.6-fold) and B cell lymphoma-2 (1.8-fold) and down-regulated the mRNA level of the tumor necrosis factor-α (0.8-fold), indicating its effects on cell survival and proliferation through the inhibition of apoptosis. Interestingly, the elevated level of carcinoembryonic antigen and the appearance of ground glass-like hepatocytes suggested that TMX exerted a pro-carcinogenic effect. In conclusion, TMX exerts potentially hepatotoxic and pro-carcinogenic effects on rabbits by modulating oxidative/antioxidative status and pro-inflammatory cytokine production, inhibiting apoptosis and activating cell survival pathways.
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Affiliation(s)
- Osama S El Okle
- Department of Forensic Medicine and Toxicology, Faculty of Veterinary Medicine, Alexandria University, Alexandria, Egypt
| | - Omnia I El Euony
- Department of Forensic Medicine and Toxicology, Faculty of Veterinary Medicine, Alexandria University, Alexandria, Egypt
| | - Asmaa F Khafaga
- Department of Pathology, Faculty of Veterinary Medicine, Alexandria University, Alexandria, Egypt.
| | - Mohamed A Lebda
- Department of Biochemistry, Faculty of Veterinary Medicine, Alexandria University, Alexandria, Egypt
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14
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Danziger O, Pupko T, Bacharach E, Ehrlich M. Interleukin-6 and Interferon-α Signaling via JAK1-STAT Differentially Regulate Oncolytic versus Cytoprotective Antiviral States. Front Immunol 2018; 9:94. [PMID: 29441069 PMCID: PMC5797546 DOI: 10.3389/fimmu.2018.00094] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2017] [Accepted: 01/12/2018] [Indexed: 12/17/2022] Open
Abstract
Malignancy-induced alterations to cytokine signaling in tumor cells differentially regulate their interactions with the immune system and oncolytic viruses. The abundance of inflammatory cytokines in the tumor microenvironment suggests that such signaling plays key roles in tumor development and therapy efficacy. The JAK-STAT axis transduces signals of interleukin-6 (IL-6) and interferons (IFNs), mediates antiviral responses, and is frequently altered in prostate cancer (PCa) cells. However, how activation of JAK-STAT signaling with different cytokines regulates interactions between oncolytic viruses and PCa cells is not known. Here, we employ LNCaP PCa cells, expressing (or not) JAK1, activated (or not) with IFNs (α or γ) or IL-6, and infected with RNA viruses of different oncolytic potential (EHDV-TAU, hMPV-GFP, or HIV-GFP) to address this matter. We show that in JAK1-expressing cells, IL-6 sensitized PCa cells to viral cell death in the presence or absence of productive infection, with dependence on virus employed. Contrastingly, IFNα induced a cytoprotective antiviral state. Biochemical and genetic (knockout) analyses revealed dependency of antiviral state or cytoprotection on STAT1 or STAT2 activation, respectively. In IL-6-treated cells, STAT3 expression was required for anti-proliferative signaling. Quantitative proteomics (SILAC) revealed a core repertoire of antiviral IFN-stimulated genes, induced by IL-6 or IFNs. Oncolysis in the absence of productive infection, induced by IL-6, correlated with reduction in regulators of cell cycle and metabolism. These results call for matching the viral features of the oncolytic agent, the malignancy-induced genetic-epigenetic alterations to JAK/STAT signaling and the cytokine composition of the tumor microenvironment for efficient oncolytic virotherapy.
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Affiliation(s)
- Oded Danziger
- Department of Cell Research and Immunology, George S. Wise Faculty of Life Sciences, Tel Aviv University, Tel Aviv, Israel
| | - Tal Pupko
- Department of Cell Research and Immunology, George S. Wise Faculty of Life Sciences, Tel Aviv University, Tel Aviv, Israel
| | - Eran Bacharach
- Department of Cell Research and Immunology, George S. Wise Faculty of Life Sciences, Tel Aviv University, Tel Aviv, Israel
| | - Marcelo Ehrlich
- Department of Cell Research and Immunology, George S. Wise Faculty of Life Sciences, Tel Aviv University, Tel Aviv, Israel
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15
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Wu D, Cheng J, Sun G, Wu S, Li M, Gao Z, Zhai S, Li P, Su D, Wang X. p70S6K promotes IL-6-induced epithelial-mesenchymal transition and metastasis of head and neck squamous cell carcinoma. Oncotarget 2017; 7:36539-36550. [PMID: 27174914 PMCID: PMC5095019 DOI: 10.18632/oncotarget.9282] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2015] [Accepted: 04/24/2016] [Indexed: 12/14/2022] Open
Abstract
Head and neck squamous cell carcinoma (HNSCC) is the fifth most common cancer worldwide and a common cause of cancer-related death, with a 5-year survival rate of less than 60%. IL-6 has been suggested to play an important role in cancer metastasis, but its mechanism in HNSCC has not been fully clarified. p70S6K has been reported to induce epithelial-mesenchymal transition (EMT) of ovarian cancer, but its role in HNSCC remains unknown. In this study, we found that p70S6K and IL-6 were upregulated in high-metastatic HNSCC cell lines that underwent EMT when compared to paired low-metastatic cell lines. Overexpression of p70S6K promoted EMT and migration of HNSCC cells, while downregulation of p70S6K attenuated IL-6-induced EMT and cell migration. Furthermore, IL-6-induced p70S6K activation was attenuated by inhibitors of the PI3K/Akt/mTOR, MAPK/ERK, and JAK/STAT3 signaling pathways, suggesting that it located downstream of these pathways. These findings suggest that p70S6K promotes IL-6-induced EMT and metastasis of HNSCC. Targeting p70S6K for HNSCC therapy may benefit patients through the inhibition of tumor growth, as well as metastasis.
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Affiliation(s)
- Dandan Wu
- Department of Pharmacology, Nanjing Medical University, Nanjing, Jiangsu Province 210029, China.,Department of Basic Medicine, Kangda College of Nanjing Medical University, Lianyungang, Jiangsu Province 222000, China
| | - Jie Cheng
- Department of Oral and Maxillofacial Surgery, Affiliated Hospital of Stomatology, Nanjing Medical University, Nanjing, Jiangsu Province 210029, China
| | - Geng Sun
- Department of Pharmacology, Nanjing Medical University, Nanjing, Jiangsu Province 210029, China
| | - Shengjie Wu
- Department of Pharmacology, Nanjing Medical University, Nanjing, Jiangsu Province 210029, China
| | - Min Li
- Department of Pharmacology, Nanjing Medical University, Nanjing, Jiangsu Province 210029, China
| | - Zhongyuan Gao
- Department of Pharmacology, Nanjing Medical University, Nanjing, Jiangsu Province 210029, China
| | - Sulan Zhai
- Department of Pharmacology, Nanjing Medical University, Nanjing, Jiangsu Province 210029, China
| | - Ping Li
- Department of Pharmacology, Nanjing Medical University, Nanjing, Jiangsu Province 210029, China
| | - Dongming Su
- Center for Clinical Pathology and Laboratory, Affiliated Hospital of Yifu, Nanjing Medical University, Nanjing, Jiangsu Province 211166, China.,Department of Pathology, Nanjing Medical University, Nanjing, Jiangsu Province 210029, China
| | - Xuerong Wang
- Department of Pharmacology, Nanjing Medical University, Nanjing, Jiangsu Province 210029, China.,Center for Clinical Pathology and Laboratory, Affiliated Hospital of Yifu, Nanjing Medical University, Nanjing, Jiangsu Province 211166, China.,Key Laboratory of Human Functional Genomics of Jiangsu Province, Nanjing Medical University, Nanjing, Jiangsu Province 210029, China
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16
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Péant B, Gilbert S, Le Page C, Poisson A, L'Ecuyer E, Boudhraa Z, Bienz MN, Delvoye N, Saad F, Mes-Masson AM. IκB-Kinase-epsilon (IKKε) over-expression promotes the growth of prostate cancer through the C/EBP-β dependent activation of IL-6 gene expression. Oncotarget 2017; 8:14487-14501. [PMID: 27577074 PMCID: PMC5362420 DOI: 10.18632/oncotarget.11629] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2015] [Accepted: 08/20/2016] [Indexed: 01/13/2023] Open
Abstract
The inflammatory cytokine IL-6 has been shown to induce the nuclear translocation of androgen receptors in prostate cancer cells and to activate the androgen receptors in a ligand-independent manner, suggesting it may contribute to the development of a castrate-resistant phenotype. Elevated IL-6 serum levels have also been associated with metastasis-related morbidity in prostate cancer patients. We have previously established that over-expression of I-kappa-B-kinase-epsilon (IKKε also named IKKi or IκBKε) in hormone-sensitive prostate cancer cell lines induces IL-6 secretion. We have also reported that prostate cancer cell lines lacking androgen receptor expression exhibit high constitutive IKKε expression and IL-6 secretion. In the present study, we validated the impact of IKKε depletion on the in vitro proliferation of castrate-resistant prostate cancer cells, and characterized how IKKε depletion affects tumor growth and IL-6 tumor secretion in vivo through a mouse xenograft-based approach. We observed a significant growth delay in IKKε-silenced PC-3 cells injected in SCID mice fed with a doxycycline-supplemented diet in comparison with mice fed with a normal diet. We also found a decrease in IL-6 secretion levels that strongly correlated with tumor growth inhibition. Finally, using constructs with various IL-6-mutated promoters, we demonstrated that IKKε over-expression induces a NF-κB-independent stimulation of the IL-6 gene promoter through the activation and nuclear accumulation of the transcription factor C/EBP-β. Our study demonstrates the pro-proliferative role of the oncogene IKKε in castrate-resistant prostate cancer cell lines, involving the phosphorylation and nuclear translocation of C/EBP-β that initiates IL-6 gene expression.
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Affiliation(s)
- Benjamin Péant
- Centre de Recherche du Centre Hospitalier de l'Université de Montréal (CRCHUM)/Institut du Cancer de Montréal, Montreal, Canada
| | - Sophie Gilbert
- Centre de Recherche du Centre Hospitalier de l'Université de Montréal (CRCHUM)/Institut du Cancer de Montréal, Montreal, Canada
| | - Cécile Le Page
- Centre de Recherche du Centre Hospitalier de l'Université de Montréal (CRCHUM)/Institut du Cancer de Montréal, Montreal, Canada
| | - Alexis Poisson
- Centre de Recherche du Centre Hospitalier de l'Université de Montréal (CRCHUM)/Institut du Cancer de Montréal, Montreal, Canada
| | - Emilie L'Ecuyer
- Centre de Recherche du Centre Hospitalier de l'Université de Montréal (CRCHUM)/Institut du Cancer de Montréal, Montreal, Canada
| | - Zied Boudhraa
- Centre de Recherche du Centre Hospitalier de l'Université de Montréal (CRCHUM)/Institut du Cancer de Montréal, Montreal, Canada
| | - Marc Nicolas Bienz
- Centre de Recherche du Centre Hospitalier de l'Université de Montréal (CRCHUM)/Institut du Cancer de Montréal, Montreal, Canada
| | - Nathalie Delvoye
- Centre de Recherche du Centre Hospitalier de l'Université de Montréal (CRCHUM)/Institut du Cancer de Montréal, Montreal, Canada
| | - Fred Saad
- Centre de Recherche du Centre Hospitalier de l'Université de Montréal (CRCHUM)/Institut du Cancer de Montréal, Montreal, Canada.,Department of Surgery, Hôpital Saint Luc (CHUM), Montreal, Canada.,Department of Surgery, Université de Montréal, Montreal, Canada
| | - Anne-Marie Mes-Masson
- Centre de Recherche du Centre Hospitalier de l'Université de Montréal (CRCHUM)/Institut du Cancer de Montréal, Montreal, Canada.,Department of Medicine, Université de Montréal, Montreal, Canada
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17
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Setrerrahmane S, Xu H. Tumor-related interleukins: old validated targets for new anti-cancer drug development. Mol Cancer 2017; 16:153. [PMID: 28927416 PMCID: PMC5606116 DOI: 10.1186/s12943-017-0721-9] [Citation(s) in RCA: 149] [Impact Index Per Article: 21.3] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2017] [Accepted: 09/05/2017] [Indexed: 02/07/2023] Open
Abstract
In-depth knowledge of cancer molecular and cellular mechanisms have revealed a strong regulation of cancer development and progression by the inflammation which orchestrates the tumor microenvironment. Immune cells, residents or recruited, in the inflammation milieu can have rather contrasting effects during cancer development. Accumulated clinical and experimental data support the notion that acute inflammation could exert an immunoprotective effect leading to tumor eradication. However, chronic immune response promotes tumor growth and invasion. These reactions are mediated by soluble mediators or cytokines produced by either host immune cells or tumor cells themselves. Herein, we provide an overview of the current understanding of the role of the best-validated cytokines involved in tumor progression, IL-1, IL-4 and IL-6; in addition to IL-2 cytokines family, which is known to promote tumor eradication by immune cells. Furthermore, we summarize the clinical attempts to block or bolster the effect of these tumor-related interleukins in anti-cancer therapy development.
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Affiliation(s)
- Sarra Setrerrahmane
- The Engineering Research Center of Peptide Drug Discovery and Development, China Pharmaceutical University, Nanjing, Jiangsu, 210009, People's Republic of China
| | - Hanmei Xu
- The Engineering Research Center of Peptide Drug Discovery and Development, China Pharmaceutical University, Nanjing, Jiangsu, 210009, People's Republic of China. .,State Key Laboratory of Natural Medicines, Ministry of Education, China Pharmaceutical University, Nanjing, Jiangsu, 210009, People's Republic of China.
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18
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Shi J, Feng J, Xie J, Mei Z, Shi T, Wang S, Du Y, Yang G, Wu Y, Cheng X, Li S, Zhu L, Yang CS, Tu S, Jie Z. Targeted blockade of TGF-β and IL-6/JAK2/STAT3 pathways inhibits lung cancer growth promoted by bone marrow-derived myofibroblasts. Sci Rep 2017; 7:8660. [PMID: 28819126 PMCID: PMC5561133 DOI: 10.1038/s41598-017-09020-8] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2017] [Accepted: 07/14/2017] [Indexed: 02/06/2023] Open
Abstract
To investigate the role of TGF-β and IL-6 in myofibroblasts (MFs) - lung cancer cell interactions, lung cancer cells (Lewis and CTM-167 cell lines) were stimulated by IL-6, MF-conditioned medium (MF-CM) or MFs, with or without TGF-β signaling inhibitor - SB431542 and/or JAK2/STAT3 inhibitor - JSI-124. MFs were stimulated by TGF-β, cancer cell-CM or cancer cells, with or without SB431542 and JSI-124. Cell proliferation, the levels of cytokines, expression of mRNA and protein were determined. Mice bearing xenograft tumors were intraperitoneally treated with SB431542 or JSI-124 and monitored for up to 45 days. In co-culture systems, MFs secreted high levels of IL-6, while cancer cells produced high levels of TGF-β. Recombinant IL-6 and MF-CM activated STAT3 and upregulated TGF-β in cancer cells. In contrast, cancer cell-CM or TGF-β stimulated MFs to produce IL-6. Blockade of JAK2/STAT3 and TGF-β signaling by specific inhibitors significantly inhibited cell proliferation in vitro and tumor growth in vivo of lung cancer cells. Our study demontrated that the TGF-β and IL-6/JAK2/STAT3 signaling pathways form a positive feedback signaling loop that mediated the interactions between MFs and lung cancer cells. Targeted inhibiton of this signaling loop could be a new approach for lung cancer prevention and therapy.
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Affiliation(s)
- Jindong Shi
- Department of Respiratory Medicine, The Fifth People's Hospital of Shanghai, Fudan University, Shanghai, 200240, China
| | - Jingjing Feng
- Department of Respiratory Medicine, The Fifth People's Hospital of Shanghai, Fudan University, Shanghai, 200240, China
| | - Juan Xie
- Department of Respiratory Medicine, The Fifth People's Hospital of Shanghai, Fudan University, Shanghai, 200240, China
| | - Zhoufang Mei
- Department of Respiratory Medicine, The Fifth People's Hospital of Shanghai, Fudan University, Shanghai, 200240, China
| | - Tianyun Shi
- Department of Respiratory Medicine, The Fifth People's Hospital of Shanghai, Fudan University, Shanghai, 200240, China
| | - Shengmei Wang
- Department of Respiratory Medicine, The Fifth People's Hospital of Shanghai, Fudan University, Shanghai, 200240, China
| | - Yong Du
- Department of Respiratory Medicine, The Fifth People's Hospital of Shanghai, Fudan University, Shanghai, 200240, China
| | - Gong Yang
- Department of Central Laboratory, The Fifth People's Hospital of Shanghai, Fudan University, Shanghai, 200240, China
| | - Yougen Wu
- Department of Central Laboratory, The Fifth People's Hospital of Shanghai, Fudan University, Shanghai, 200240, China
| | - Xiaojiao Cheng
- Department of Gastroenterology, Ruijin Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, 200025, China.,Department of Gastroenterology, Ruijin Hospital North, Shanghai Jiaotong University School of Medicine, Shanghai, 201821, China
| | - Shanqun Li
- Departments of Respiratory Medicine, Zhongshan Hospital, Fudan University, Shanghai, 200032, China
| | - Liming Zhu
- Department of Chemical Biology, Ernest Mario School of Pharmacy, Rutgers, The State University of New Jersey, Piscataway, NJ, 08854, USA
| | - Chung S Yang
- Department of Chemical Biology, Ernest Mario School of Pharmacy, Rutgers, The State University of New Jersey, Piscataway, NJ, 08854, USA
| | - Shuiping Tu
- Department of Gastroenterology, Ruijin Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, 200025, China. .,Department of Gastroenterology, Ruijin Hospital North, Shanghai Jiaotong University School of Medicine, Shanghai, 201821, China.
| | - Zhijun Jie
- Department of Respiratory Medicine, The Fifth People's Hospital of Shanghai, Fudan University, Shanghai, 200240, China.
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19
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Repositioning Bazedoxifene as a novel IL-6/GP130 signaling antagonist for human rhabdomyosarcoma therapy. PLoS One 2017; 12:e0180297. [PMID: 28672024 PMCID: PMC5495564 DOI: 10.1371/journal.pone.0180297] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2016] [Accepted: 06/13/2017] [Indexed: 11/23/2022] Open
Abstract
Interleukins-6 (IL-6)/GP130 signaling pathway represents a promising target for cancer therapy due to its critical role in survival and progression of multiple types of cancer. We have identified Bazedoxifene, a Food and Drug Administration (FDA)-approved drug used for the prevention of postmenopausal osteoporosis, with novel function as inhibitor of IL-6/GP130 interaction. In this study, we investigate the effect of Bazedoxifene in rhabdomyosarcoma and evaluate whether inhibiting IL-6/GP130 signaling is an effective therapeutic strategy for rhabdomyosarcoma. The inhibitory effect of Bazedoxifene was assessed in rhabdomyosarcoma cell lines in vitro and RH30 xenograft model was used to further examine the suppressive efficacy of Bazedoxifene on tumor growth in vivo. Rhabdomyosarcoma cells showed their sensitivity to GP130 inhibition using gene knockdown or neutralized antibody, suggesting IL-6/GP130 as therapeutic target in rhabdomyosarcoma cells. Bazedoxifene decreased the signal transducer and activator of transcription3 (STAT3) phosphorylation, blocked STAT3 DNA binding, and down-regulated the expression of STAT3 downstream genes. Bazedoxifene also induced cell apoptosis, reduced cell viability, and inhibited colony formation in rhabdomyosarcoma cells. The inhibition of colony formation, STAT3 phosphorylation, or cell viability following Bazedoxifene treatment was partially reversed by addition of excess IL-6 or overexpression of constitutive STAT3, respectively, supporting Bazedoxifene acted through IL-6/GP130 signaling. In addition, Bazedoxifene repressed cell invasion and angiogenesis in vitro. Furthermore, oral administration of Bazedoxifene significantly suppressed tumor growth and expression of STAT3 phosphorylation in nude mice bearing established human rhabdomyosarcoma xenograft. Taken together, these findings validate IL-6/GP130 signaling as therapeutic target in rhabdomyosarcoma and provide first evidence that Bazedoxifene may serve as a novel promising drug targeting IL-6/GP130 for treatment of rhabdomyosarcoma.
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20
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Petrylak DP, Crawford ED. Biomarkers for the Management of Castration-Resistant Prostate Cancer: We Are Not There Yet. Target Oncol 2017; 12:401-412. [DOI: 10.1007/s11523-017-0500-y] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
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21
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GAO JIAN, ZHAO SEN, HALSTENSEN TRONDS. Increased interleukin-6 expression is associated with poor prognosis and acquired cisplatin resistance in head and neck squamous cell carcinoma. Oncol Rep 2016; 35:3265-74. [PMID: 27108527 PMCID: PMC4869939 DOI: 10.3892/or.2016.4765] [Citation(s) in RCA: 49] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2015] [Accepted: 12/31/2015] [Indexed: 12/14/2022] Open
Abstract
Increased expression of interleukin 6 (IL-6) is associated with poor prognosis and chemoresistance in many different carcinomas, but its role in head and neck squamous cell carcinoma (HNSCC) is still unsettled. Analyzing tumorous mRNA expression data from 399 HNSCC patients revealed that high IL-6 expression predicted poor prognosis. Similar tendency was observed in platinum treated patients, suggesting an IL-6 associated cisplatin resistance. IL-6 increase was also found in two in-house acquired cisplatin‑resistant HNSCC cell lines (both basaloid and conventional squamous cell carcinoma) by using microarray analysis. However, although the in-house acquired cisplatin-resistant cell lines had higher basal and markedly increased cisplatin-induced IL-6 expression, IL-6 did not mediate the cisplatin resistance as neither exogenous IL-6 nor IL-6R/gp130 inhibitors affected cisplatin sensitivity. Moreover, the IL-6/STAT3 pathway was impaired in the resistant cell lines, partly due to decreased IL-6R expression. Thus, high IL-6 expression correlated to poor prognosis and acquired cisplatin resistance, but it did not mediate cisplatin resistance in the HNSCC cell lines.
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Affiliation(s)
- JIAN GAO
- Department of Oral Biology, University of Oslo, Blindern, Oslo 0316, Norway
| | - SEN ZHAO
- Genome Biology Group, Department of Molecular Oncology, Institute for Cancer Research, Norwegian Radium Hospital, Oslo 0424, Norway
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22
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Chen CYA, Chang JT, Ho YF, Shyu AB. MiR-26 down-regulates TNF-α/NF-κB signalling and IL-6 expression by silencing HMGA1 and MALT1. Nucleic Acids Res 2016; 44:3772-87. [PMID: 27025651 PMCID: PMC4856999 DOI: 10.1093/nar/gkw205] [Citation(s) in RCA: 78] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2016] [Accepted: 03/18/2016] [Indexed: 01/14/2023] Open
Abstract
MiR-26 has emerged as a key tumour suppressor in various cancers. Accumulating evidence supports that miR-26 regulates inflammation and tumourigenicity largely through down-regulating IL-6 production, but the underlying mechanism remains obscure. Here, combining a transcriptome-wide approach with manipulation of cellular miR-26 levels, we showed that instead of directly targeting IL-6 mRNA for gene silencing, miR-26 diminishes IL-6 transcription activated by TNF-α through silencing NF-κB signalling related factors HMGA1 and MALT1. We demonstrated that miR-26 extensively dampens the induction of many inflammation-related cytokine, chemokine and tissue-remodelling genes that are activated via NF-κB signalling pathway. Knocking down both HMGA1 and MALT1 by RNAi had a silencing effect on NF-κB-responsive genes similar to that caused by miR-26. Moreover, we discovered that poor patient prognosis in human lung adenocarcinoma is associated with low miR-26 and high HMGA1 or MALT1 levels and not with levels of any of them individually. These new findings not only unravel a novel mechanism by which miR-26 dampens IL-6 production transcriptionally but also demonstrate a direct role of miR-26 in down-regulating NF-κB signalling pathway, thereby revealing a more critical and broader role of miR-26 in inflammation and cancer than previously realized.
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Affiliation(s)
- Chyi-Ying A Chen
- Department of Biochemistry and Molecular Biology, McGovern Medical School, Houston, TX 77030, USA
| | - Jeffrey T Chang
- Department of Integrative Biology and Pharmacology, McGovern Medical School, Houston, TX 77030, USA School of Biomedical Informatics, The University of Texas Health Science Center at Houston, Houston, TX 77030, USA
| | - Yi-Fang Ho
- Department of Biochemistry and Molecular Biology, McGovern Medical School, Houston, TX 77030, USA
| | - Ann-Bin Shyu
- Department of Biochemistry and Molecular Biology, McGovern Medical School, Houston, TX 77030, USA
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Wang D, Duan L, Tu Z, Yan F, Zhang C, Li X, Cao Y, Wen H. The Glasgow Prognostic Score Predicts Response to Chemotherapy in Patients with Metastatic Breast Cancer. Chemotherapy 2016; 61:217-22. [PMID: 26905743 DOI: 10.1159/000443367] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2015] [Accepted: 12/14/2015] [Indexed: 11/19/2022]
Abstract
PURPOSE Breast cancer is one of the most common causes of cancer death in women worldwide. The Glasgow Prognostic Score (GPS), a cumulative prognostic score based on C-reactive protein and albumin, indicates the presence of a systemic inflammatory response. The GPS has been adopted as a powerful prognostic tool for patients with various types of malignant tumors, including breast cancer. The aim of this study was to assess the value of the GPS in predicting the response and toxicity in breast cancer patients treated with chemotherapy. PATIENTS AND METHODS Patients with metastatic breast cancers in a progressive stage for consideration of chemotherapy were eligible. The clinical characteristics and demographics were recorded. The GPS was calculated before the onset of chemotherapy. Data on the response to chemotherapy and progression-free survival (PFS) were also collected. Objective tumor responses were evaluated according to Response Evaluation Criteria in Solid Tumors (RECIST). Toxicities were graded according to National Cancer Institute Common Terminology Criteria for Adverse Events (NCI-CTC) version 3.0 throughout therapy. RESULTS In total, 106 breast cancer patients were recruited. The GPS was associated with the response rate (p = 0.05), the clinical benefit rate (p = 0.03), and PFS (p = 0.005). The GPS was the only independent predictor of PFS (p = 0.005). The GPS was significantly associated with neutropenia, thrombocytopenia, anorexia, nausea and vomiting, fatigue, and mucositis (p = 0.05-0.001). CONCLUSIONS Our data demonstrate that GPS assessment is associated with poor clinical outcomes and severe chemotherapy-related toxicities in patients with metastatic breast cancer who have undergone chemotherapy, without any specific indication regarding the type of chemotherapy applied.
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Bhat IA, Qasim I, Masoodi KZ, Paul SA, Bhat BA, Rasool R, Aziz SA, Shah ZA. Significant impact of IL-6 -174G/C but inverse relation with -634 C/G polymorphism in patients with non-small cell lung cancer in Kashmiri population. Immunol Invest 2016; 44:349-60. [PMID: 25942346 DOI: 10.3109/08820139.2015.1004336] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
To study the possible role of proinflammatory interleukin 6 -174 G>C (rs 1800795) and -634 C>G (rs 1800796) polymorphism in the pathogenesis of non-small cell lung cancer (NSCLC). A total of 190 NSCLC patients and 200 healthy controls were evaluated for polymorphic analysis of -174 G/C and -634 C/G by PCR-RFLP followed by DNA sequencing. A significant association was observed in the genotypic and allelic distribution of IL-6 -174 G/C in the NSCLC group as compared to control group [OR = 2.7 (1.77-4.11), p < 0.0001]. Smokers with the -174C allele were found to be significantly associated with NSCLC (p = 0.01), while 634C/G SNP showed an inverse relation [OR-0.4, p < 0.0001]. The present investigation revealed a significant association of the IL6 -174 G/C gene promoter polymorphism with NSCLC, and thus, the IL-6 -174G/C genotype can be considered as one of the biological markers in the etiology of NSCLC.
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Affiliation(s)
- Imtiyaz A Bhat
- Department of Immunology and Molecular Medicine, Sher-i-Kashmir Institute of Medical Sciences , Srinagar , India
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Lissat A, Joerschke M, Shinde DA, Braunschweig T, Meier A, Makowska A, Bortnick R, Henneke P, Herget G, Gorr TA, Kontny U. IL6 secreted by Ewing sarcoma tumor microenvironment confers anti-apoptotic and cell-disseminating paracrine responses in Ewing sarcoma cells. BMC Cancer 2015. [PMID: 26215971 PMCID: PMC4517368 DOI: 10.1186/s12885-015-1564-7] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022] Open
Abstract
Background The prognosis of patients with Ewing sarcoma (ES) has improved over the course of the last decades. However, those patients suffering from metastatic and recurrent ES still have only poor chances of survival and require new therapeutic approaches. Interleukin-6 (IL6) is a pleiotropic cytokine expressed by immune cells and a great variety of cancer cells. It induces inflammatory responses, enhances proliferation and inhibits apoptosis in cancer cells, thereby promoting chemoresistance. Methods We investigated expression of IL6, its receptors and the IL6 signal transduction pathway in ES tumor samples and cell lines applying reverse transcriptase PCR, immunoblot and immunohistochemistry. The impact of IL6 on cell viability and apoptosis in ES cell lines was analyzed by MTT and propidium iodide staining, migration assessed by chorioallantoic membrane (CAM) assay. Results Immunohistochemistry proved IL6 expression in the stroma of ES tumor samples. IL6 receptor subunits IL6R and IL6ST were expressed on the surface of ES cells. Treatment of ES cells with rhIL6 resulted in phosphorylation of STAT3. rhIL6 protected ES cells from serum starvation-induced apoptosis and promoted migration. IL6 blood serum levels were elevated in a subgroup of ES patients with poor prognosis. Conclusions These data suggest that IL6 contributes to ES tumor progression by increasing resistance to apoptosis in conditions of cellular stress, such as serum starvation, and by promotion of metastasis. Electronic supplementary material The online version of this article (doi:10.1186/s12885-015-1564-7) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Andrej Lissat
- Division of Pediatric Hematology and Oncology, Charité - University Medical Center, Berlin, Germany.
| | - Mandy Joerschke
- Division of Pediatric Hematology and Oncology, Department of Pediatrics and Adolescent Medicine, University Medical Center Freiburg, Freiburg, Germany.
| | - Dheeraj A Shinde
- Dheeraj Shinde, Institute of Oncology Research, Via Vincenzo Vela, Bellinzona, 66500, Switzerland.
| | | | - Angelina Meier
- Division of Pediatric Hematology and Oncology, Department of Pediatrics and Adolescent Medicine, University Medical Center Freiburg, Freiburg, Germany.
| | - Anna Makowska
- Division of Pediatric Hematology and Oncology, University Medical Center Aachen, Pauwelsstraße 30, Aachen, 52074, Germany.
| | - Rachel Bortnick
- Division of Pediatric Hematology and Oncology, Department of Pediatrics and Adolescent Medicine, University Medical Center Freiburg, Freiburg, Germany.
| | - Philipp Henneke
- Center for Chronic Immunodeficiency, University Medical Center Freiburg, Freiburg, Germany.
| | - Georg Herget
- Department of Traumatology and Orthopaedics, University Medical Center Freiburg, Freiburg, Germany.
| | - Thomas A Gorr
- Division of Pediatric Hematology and Oncology, Department of Pediatrics and Adolescent Medicine, University Medical Center Freiburg, Freiburg, Germany. .,Institute of Veterinary Physiology, Vetsuisse Faculty, University of Zurich, Zurich, Switzerland.
| | - Udo Kontny
- Division of Pediatric Hematology and Oncology, University Medical Center Aachen, Pauwelsstraße 30, Aachen, 52074, Germany.
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Mahon KL, Lin HM, Castillo L, Lee BY, Lee-Ng M, Chatfield MD, Chiam K, Breit SN, Brown DA, Molloy MP, Marx GM, Pavlakis N, Boyer MJ, Stockler MR, Daly RJ, Henshall SM, Horvath LG. Cytokine profiling of docetaxel-resistant castration-resistant prostate cancer. Br J Cancer 2015; 112:1340-8. [PMID: 25867259 PMCID: PMC4402456 DOI: 10.1038/bjc.2015.74] [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] [Received: 09/04/2014] [Revised: 01/28/2015] [Accepted: 01/30/2015] [Indexed: 11/25/2022] Open
Abstract
Background: Docetaxel improves symptoms and survival in metastatic castration-resistant prostate cancer (CRPC). However, ∼50% of patients are chemoresistant. This study examined whether changes in cytokine levels predict for docetaxel resistance in vitro and in a clinical cohort. Methods: PC3 cells or their docetaxel-resistant subline (PC3Rx) were co-cultured with U937 monocytes, with and without docetaxel treatment, and cytokine levels were measured. The circulating levels of 28 cytokines were measured pre-/post cycle 1 of docetaxel from 55 men with CRPC, and compared with prostate-specific antigen (PSA) response. Results: PC3Rx-U937 co-culture expressed more cytokines, chiefly markers of alternative macrophage differentiation, compared with PC3-U937 co-culture. Docetaxel treatment enhanced cytokine production by PC3Rx-U937 co-culture, while reducing cytokine levels in PC3-U937. In patients, changes in the levels of seven circulating cytokines (macrophage inhibitory cytokine 1 (MIC1), interleukin (IL)-1ra, IL-1β, IL-4, IL-6, IL-12 and IFNγ) after cycle 1 of docetaxel were associated with progressive disease (all P<0.05). The combination of changes in MIC1, IL-4 and IL-6 most strongly predicted PSA response (P=0.002). Conclusions: In vitro studies suggest docetaxel resistance is mediated, at least in part, by cytokines induced by the interaction between the docetaxel-resistant tumour cells and macrophages. Early changes in circulating cytokine levels were associated with docetaxel resistance in CRPC patients. When considered together, these data suggest a significant role for the inflammatory response and macrophages in the development of docetaxel resistance in CRPC.
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Affiliation(s)
- K L Mahon
- 1] Chris O'Brien Lifehouse, Missenden Road, Camperdown, NSW 2050, Australia [2] Cancer Research Division, Garvan Institute of Medical Research/The Kinghorn Cancer Centre, Darlinghurst, NSW 2010, Australia [3] University of Sydney, Sydney, New South Wales 2050, Australia
| | - H-M Lin
- Cancer Research Division, Garvan Institute of Medical Research/The Kinghorn Cancer Centre, Darlinghurst, NSW 2010, Australia
| | - L Castillo
- Cancer Research Division, Garvan Institute of Medical Research/The Kinghorn Cancer Centre, Darlinghurst, NSW 2010, Australia
| | - B Y Lee
- Cancer Research Division, Garvan Institute of Medical Research/The Kinghorn Cancer Centre, Darlinghurst, NSW 2010, Australia
| | - M Lee-Ng
- St Vincent's Centre for Applied Medical Research, Liverpool Street, Darlinghurst, NSW 2010, Australia
| | - M D Chatfield
- Menzies School of Health Research, Darwin, NT, Australia
| | - K Chiam
- Cancer Research Division, Garvan Institute of Medical Research/The Kinghorn Cancer Centre, Darlinghurst, NSW 2010, Australia
| | - S N Breit
- St Vincent's Centre for Applied Medical Research, Liverpool Street, Darlinghurst, NSW 2010, Australia
| | - D A Brown
- St Vincent's Centre for Applied Medical Research, Liverpool Street, Darlinghurst, NSW 2010, Australia
| | - M P Molloy
- Australian Proteome Analysis Facility, Macquarie University, NSW 2105, Australia
| | - G M Marx
- Northern Haematology and Oncology Group, SAN Clinic, Wahroonga, NSW 2076, Australia
| | - N Pavlakis
- Royal North Shore Hospital, Pacific Highway, Sydney, NSW 2065, Australia
| | - M J Boyer
- 1] Chris O'Brien Lifehouse, Missenden Road, Camperdown, NSW 2050, Australia [2] University of Sydney, Sydney, New South Wales 2050, Australia
| | - M R Stockler
- 1] Chris O'Brien Lifehouse, Missenden Road, Camperdown, NSW 2050, Australia [2] University of Sydney, Sydney, New South Wales 2050, Australia
| | - R J Daly
- Signalling Network Laboratory, Department of Biochemistry and Molecular Biology, School of Biomedical Sciences, Monash University, Clayton, VIC 3800, Australia
| | - S M Henshall
- Cancer Research Division, Garvan Institute of Medical Research/The Kinghorn Cancer Centre, Darlinghurst, NSW 2010, Australia
| | - L G Horvath
- 1] Chris O'Brien Lifehouse, Missenden Road, Camperdown, NSW 2050, Australia [2] Cancer Research Division, Garvan Institute of Medical Research/The Kinghorn Cancer Centre, Darlinghurst, NSW 2010, Australia [3] University of Sydney, Sydney, New South Wales 2050, Australia
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Abdul Rahim SN, Ho GY, Coward JIG. The role of interleukin-6 in malignant mesothelioma. Transl Lung Cancer Res 2015; 4:55-66. [PMID: 25806346 DOI: 10.3978/j.issn.2218-6751.2014.07.01] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2014] [Accepted: 06/12/2014] [Indexed: 12/29/2022]
Abstract
Malignant mesothelioma (MM) still remains a dismal disease with a median overall survival between 9-12 months. During the past decade since the introduction of the multi-folate antagonist, pemetrexed, there have been no significant advances in its systemic treatment, particularly with novel therapeutics that have exhibited varying degrees of success in other solid tumours. In recent years, the pleiotropic proinflammatory cytokine, interleukin-6 (IL-6) has emerged as a mediator of pivotal processes such as cell proliferation and chemoresistance within the mesothelioma tumour microenvironment in addition to clinical symptoms commonly witnessed in this disease. This manuscript provides a brief summary on the pathophysiology and clinical management of MM, followed by the role of IL-6 in its tumourigenesis and the rationale for utilising anti-IL-6 therapeutics alongside standard chemotherapy and targeted agents in an attempt to prolong survival.
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Affiliation(s)
- Siti N Abdul Rahim
- 1 Inflammation & Cancer Therapeutics Group, Mater Research, University of Queensland, Translational Research Institute, 37 Kent Street, Woolloongabba, Brisbane, QLD, 4102, Australia ; 2 School of Chemistry & Molecular Bioscience, 3 School of Medicine, University of Queensland, Brisbane, QLD 4072, Australia ; 4 Mater Health Services, Raymond Terrace, South Brisbane, QLD 4101, Australia
| | - Gwo Y Ho
- 1 Inflammation & Cancer Therapeutics Group, Mater Research, University of Queensland, Translational Research Institute, 37 Kent Street, Woolloongabba, Brisbane, QLD, 4102, Australia ; 2 School of Chemistry & Molecular Bioscience, 3 School of Medicine, University of Queensland, Brisbane, QLD 4072, Australia ; 4 Mater Health Services, Raymond Terrace, South Brisbane, QLD 4101, Australia
| | - Jermaine I G Coward
- 1 Inflammation & Cancer Therapeutics Group, Mater Research, University of Queensland, Translational Research Institute, 37 Kent Street, Woolloongabba, Brisbane, QLD, 4102, Australia ; 2 School of Chemistry & Molecular Bioscience, 3 School of Medicine, University of Queensland, Brisbane, QLD 4072, Australia ; 4 Mater Health Services, Raymond Terrace, South Brisbane, QLD 4101, Australia
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28
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Intracellular annexin A2 regulates NF-κB signaling by binding to the p50 subunit: implications for gemcitabine resistance in pancreatic cancer. Cell Death Dis 2015; 6:e1606. [PMID: 25611381 PMCID: PMC4669756 DOI: 10.1038/cddis.2014.558] [Citation(s) in RCA: 60] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2014] [Revised: 11/26/2014] [Accepted: 11/26/2014] [Indexed: 12/18/2022]
Abstract
Annexin A2 (ANXA2) expression is highly upregulated in many types of cancer. Although cell surface localization of ANXA2 has been reported to have a critical role in the progression and metastasis of a variety of tumors, including pancreatic cancer, the biological role of intracellular ANXA2 is not fully understood. Herein the role of intracellular ANXA2 was investigated in a pancreatic cancer cell line. We first determined whether ANXA2 is involved in NF-κB signaling pathways. ANXA2 bound to the p50 subunit of NF-κB in a calcium-independent manner, and the ANXA2–p50 complex translocated into the nucleus. Furthermore, ANXA2 increased the transcriptional activity of NF-κB in both the resting and activated states and upregulated the transcription of several target genes downstream of NF-κB, including that encoding interleukin (IL)-6, which contributes to anti-apoptotic signaling. In Mia-Paca2 cells, we determined the effects of wild-type ANXA2 and an ANXA2 mutant, Y23A, which suppresses the cell surface localization, on upregulation of NF-κB transcriptional activity and secretion of IL-6. Both wild-type and Y23A ANXA2 induced anti-apoptotic effects in response to treatment with tumor necrosis factor-α or gemcitabine. Based on these results, we suggest that ANXA2 mediates resistance to gemcitabine by directly increasing the activity of NF-κB. Collectively, these data may provide additional information about the biological role of ANXA2 in pancreatic cancer and suggest that ANXA2 is a potential biomarker for the drug resistance phenotype and a candidate therapeutic target for the treatment of pancreatic cancer.
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Suh YA, Jo SY, Lee HY, Lee C. Inhibition of IL-6/STAT3 axis and targeting Axl and Tyro3 receptor tyrosine kinases by apigenin circumvent taxol resistance in ovarian cancer cells. Int J Oncol 2014; 46:1405-11. [PMID: 25544427 DOI: 10.3892/ijo.2014.2808] [Citation(s) in RCA: 68] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2014] [Accepted: 11/26/2014] [Indexed: 11/05/2022] Open
Abstract
Ovarian cancer is the number one cause of death from gynaecological malignancy. Platinum-based and taxol-based chemotherapy has been used as a standard therapy, but intrinsic and acquired resistance to chemotherapy is a major obstacle to treat the disease. In the present study, we found that in the chemoresistant ovarian cancer SKOV3/TR cells, interleukin-6 (IL-6), IL-6 receptor and signal transducers and activators of transcription 3 (STAT3) expression as well as STAT3 phosphorylation were upregulated compared to those in parental cells. Silencing of IL-6 using IL-6 siRNA was found to suppress IL-6 production, STAT3 and phosphoSTAT3 levels, which eventually reduced proliferation and clonogenicity of taxol-resistant SKOV3/TR cells. In addition, stattic, a STAT3 inhibitor, was found to result in decrease of cell viability and clonogenicity of these cells, indicating that the elevated IL-6 and STAT3, phosphoSTAT3 levels are associated with the development of taxol resistance. Next, we found anti-proliferative effect of apigenin on both SKOV3 and SKOV3/TR cells. RT-PCR and western blot results showed that apigenin significantly reduced the expression of Axl and Tyro3 receptor tyrosine kinases (RTKs) at mRNA and protein level, which account for its cytotoxic activity. We further found that apigenin decreased Akt phosphorylation and the level of B-cell lymphoma-extra large (Bcl-xl or BCL2-like 1 isoform 1), an inhibitor of apoptosis. On the contrary to these results, apigenin had no effect on IL-6 production, STAT3 and phosphoSTAT3 protein levels, suggesting that apigenin exerts its anti-proliferative activity via downregulation of Axl and Tyro3 expression, Akt phosphorylation and Bcl-xl expression, but not modulation of IL-6/STAT3 axis. Taken together, our data suggest that inhibition of IL-6/STAT3 signaling pathway and downregulation of Axl and Tyro3 RTKs expression might be a therapeutic strategy to overcome taxol resistance in ovarian cancer cells.
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Affiliation(s)
- Young-Ah Suh
- Institute for Innovative Cancer Research, Asan Medical Center, University of Ulsan College of Medicine, Seoul 138-736, Republic of Korea
| | - Se-Young Jo
- Institute for Innovative Cancer Research, Asan Medical Center, University of Ulsan College of Medicine, Seoul 138-736, Republic of Korea
| | - Hwa-Young Lee
- Department of Biochemistry and Molecular Biology, School of Medicine, Yeungnam University, Daegu 705-717, Republic of Korea
| | - Chuhee Lee
- Department of Biochemistry and Molecular Biology, School of Medicine, Yeungnam University, Daegu 705-717, Republic of Korea
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Role of miRNA let-7 and its major targets in prostate cancer. BIOMED RESEARCH INTERNATIONAL 2014; 2014:376326. [PMID: 25276782 PMCID: PMC4168040 DOI: 10.1155/2014/376326] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/16/2014] [Revised: 08/11/2014] [Accepted: 08/18/2014] [Indexed: 12/21/2022]
Abstract
Prostate cancer is worldwide the sixth leading cause of cancer related death in men thus early detection and successful treatment are still of major interest. The commonly performed screening of the prostate-specific antigen (PSA) is controversially discussed, as in many patients the prostate-specific antigen levels are chronically elevated in the absence of cancer. Due to the unsatisfying efficiency of available prostate cancer screening markers and the current treatment outcome of the aggressive hormone refractory prostate cancer, the evaluation of novel molecular markers and targets is considered an issue of high importance. MicroRNAs are relatively stable in body fluids orchestrating simultaneously the expression of many genes. These molecules are currently discussed to bear a greater diagnostic potential than protein-coding genes, being additionally promising therapeutic drugs and/or targets. Herein we review the potential impact of the microRNA let-7 family on prostate cancer and show how deregulation of several of its target genes could influence the cellular equilibrium in the prostate gland, promoting cancer development as they do in a variety of other human malignant neoplasias.
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Bruchard M, Ghiringhelli F. [Tumor microenvironment: regulatory cells and immunosuppressive cytokines]. Med Sci (Paris) 2014; 30:429-35. [PMID: 24801039 DOI: 10.1051/medsci/20143004018] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022] Open
Abstract
Immunosuppression is a mechanism developed by cancer cells to help them escape the immune system. Immunosuppression involves expansion of various cell types and production of a variety of cytokines. In this review, we explore the duality of three cancer induced cell populations, regulatory T lymphocytes, Th17 lymphocytes and MDSC, and also the pleiotropic effects of several cytokines induced during cancer development.
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Affiliation(s)
- Mélanie Bruchard
- Inserm, faculté de médecine et de pharmacie de Dijon, 7, boulevard Jeanne d'Arc, Dijon, France
| | - François Ghiringhelli
- Inserm, faculté de médecine et de pharmacie de Dijon, 7, boulevard Jeanne d'Arc, Dijon, France - Centre Georges François Leclerc, 1 rue du Professeur Marion, Dijon, France
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Thoma CR, Zimmermann M, Agarkova I, Kelm JM, Krek W. 3D cell culture systems modeling tumor growth determinants in cancer target discovery. Adv Drug Deliv Rev 2014; 69-70:29-41. [PMID: 24636868 DOI: 10.1016/j.addr.2014.03.001] [Citation(s) in RCA: 326] [Impact Index Per Article: 32.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2014] [Revised: 02/19/2014] [Accepted: 03/05/2014] [Indexed: 12/17/2022]
Abstract
Phenotypic heterogeneity of cancer cells, cell biological context, heterotypic crosstalk and the microenvironment are key determinants of the multistep process of tumor development. They sign responsible, to a significant extent, for the limited response and resistance of cancer cells to molecular-targeted therapies. Better functional knowledge of the complex intra- and intercellular signaling circuits underlying communication between the different cell types populating a tumor tissue and of the systemic and local factors that shape the tumor microenvironment is therefore imperative. Sophisticated 3D multicellular tumor spheroid (MCTS) systems provide an emerging tool to model the phenotypic and cellular heterogeneity as well as microenvironmental aspects of in vivo tumor growth. In this review we discuss the cellular, chemical and physical factors contributing to zonation and cellular crosstalk within tumor masses. On this basis, we further describe 3D cell culture technologies for growth of MCTS as advanced tools for exploring molecular tumor growth determinants and facilitating drug discovery efforts. We conclude with a synopsis on technological aspects for on-line analysis and post-processing of 3D MCTS models.
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The Role of STAT3 in Non-Small Cell Lung Cancer. Cancers (Basel) 2014; 6:708-22. [PMID: 24675568 PMCID: PMC4074799 DOI: 10.3390/cancers6020708] [Citation(s) in RCA: 137] [Impact Index Per Article: 13.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2013] [Revised: 02/23/2014] [Accepted: 03/07/2014] [Indexed: 12/16/2022] Open
Abstract
Persistent phosphorylation of signal transducer and activator of transcription 3 (STAT3) has been demonstrated in 22%~65% of non-small cell lung cancers (NSCLC). STAT3 activation is mediated by receptor tyrosine kinases, such as epidermal growth factor receptor (EGFR) and MET, cytokine receptors, such as IL-6, and non-receptor kinases, such as Src. Overexpression of total or phosphorylated STAT3 in resected NSCLC leads to poor prognosis. In a preclinical study, overexpression of STAT3 was correlated with chemoresistance and radioresistance in NSCLC cells. Here, we review the role of STAT3 and the mechanisms of treatment resistance in malignant diseases, especially NSCLC. As STAT3 is a critical mediator of the oncogenic effects of EGFR mutations, we discuss STAT3 pathways in EGFR-mutated NSCLC, referring to mechanisms of EGFR tyrosine kinase inhibitor resistance.
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Wang Y, Qu Y, Zhang XL, Xing J, Niu XL, Chen X, Li ZM. Autocrine production of interleukin-6 confers ovarian cancer cells resistance to tamoxifen via ER isoforms and SRC-1. Mol Cell Endocrinol 2014; 382:791-803. [PMID: 24189439 DOI: 10.1016/j.mce.2013.10.029] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/22/2013] [Revised: 10/07/2013] [Accepted: 10/25/2013] [Indexed: 11/17/2022]
Abstract
Although 40-60% of ovarian cancer (OVCA)s express estrogen receptor (ER)α, only a minor proportion of patients respond to anti-estrogen treatment with ER antagonist tamoxifen (TAM). The mechanism underlying TAM resistance in the course of OVCA progression is incompletely understood. However, interleukin-6 (IL-6) plays a critical role in the development and progression of OVCA. Here we explore an association between IL-6 and TAM resistance. We demonstrate that both exogenous (a relatively short period of treatment with recombinant IL-6) and endogenous IL-6 (by transfecting with plasmid encoding for sense IL-6) induce TAM resistance in non-IL-6-expressing A2780 cells, while deleting of endogenous IL-6 expression in IL-6-overexpressing CAOV-3 cells (by transfecting with plasmid encoding for antisense IL-6) promotes the sensitivity of these cells to TAM. Further investigation indicates that TAM resistance caused by IL-6 is associated with the alteration of ERα, ERβ and steroid hormone receptor coactivator (SRC)-1 expression levels, the protein interactions between SRC-1 and ERα, but not ERβ, as well as blockage of estrogen-induced ER receptor nuclear translocation. These results show that IL-6 secreted by OVCA cells may contribute to the refractoriness of these cells to TAM via ER isoforms and SRC-1. Overexpression of IL-6 not only plays an important role in OVCA progression but also contributes to TAM resistance. Our studies suggest that TAM-IL-6-targeted adjunctive therapy may lead to a more effective intervention than TAM alone.
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Affiliation(s)
- Yue Wang
- Tianjin Key Laboratory for Prevention and Control of Occupational and Environmental Hazard, Tianjin, People's Republic of China; Department of Immunology, Logistics College of Chinese People's Armed Police Forces, Tianjin, People's Republic of China.
| | - Ye Qu
- Department of Immunology, Logistics College of Chinese People's Armed Police Forces, Tianjin, People's Republic of China
| | - Xiao Lei Zhang
- Department of Immunology, Logistics College of Chinese People's Armed Police Forces, Tianjin, People's Republic of China
| | - Jie Xing
- Department of Immunology, Logistics College of Chinese People's Armed Police Forces, Tianjin, People's Republic of China
| | - Xiu Long Niu
- Department of of Infectious Diseases, Affiliated Hospital of Logistics College of Chinese People's Armed Police Forces, Tianjin, People's Republic of China
| | - Xiao Chen
- Department of of Gynaecology and Obstetrics, Affiliated Hospital of Logistics College of Chinese People's Armed Police Forces, Tianjin, People's Republic of China
| | - Zong Min Li
- Department of Immunology, Logistics College of Chinese People's Armed Police Forces, Tianjin, People's Republic of China
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Yao X, Huang J, Zhong H, Shen N, Faggioni R, Fung M, Yao Y. Targeting interleukin-6 in inflammatory autoimmune diseases and cancers. Pharmacol Ther 2013; 141:125-39. [PMID: 24076269 DOI: 10.1016/j.pharmthera.2013.09.004] [Citation(s) in RCA: 424] [Impact Index Per Article: 38.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2013] [Accepted: 09/03/2013] [Indexed: 12/15/2022]
Abstract
Interleukin-6 (IL-6) is a pleiotropic cytokine with significant functions in the regulation of the immune system. As a potent pro-inflammatory cytokine, IL-6 plays a pivotal role in host defense against pathogens and acute stress. However, increased or deregulated expression of IL-6 significantly contributes to the pathogenesis of various human diseases. Numerous preclinical and clinical studies have revealed the pathological roles of the IL-6 pathway in inflammation, autoimmunity, and cancer. Based on the rich body of studies on biological activities of IL-6 and its pathological roles, therapeutic strategies targeting the IL-6 pathway are in development for cancers, inflammatory and autoimmune diseases. Several anti-IL-6/IL-6 receptor monoclonal antibodies developed for targeted therapy have demonstrated promising results in both preclinical studies and clinical trials. Tocilizumab, an anti-IL-6 receptor antibody, is effective in the treatment of various autoimmune and inflammatory conditions notably rheumatoid arthritis. It is the only IL-6 pathway targeting agent approved by the regulatory agencies for clinical use. Siltuximab, an anti-IL-6 antibody, has been shown to have potential benefits treating various human cancers either as a single agent or in combination with other chemotherapy drugs. Several other anti-IL-6-based therapies are also under clinical development for various diseases. IL-6 antagonism has been shown to be a potential therapy for these disorders refractory to conventional drugs. New strategies, such as combination of IL-6 blockade with inhibition of other signaling pathways, may further improve IL-6-targeted immunotherapy of human diseases.
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Affiliation(s)
- Xin Yao
- MedImmune, LLC, Gaithersburg, MD 20878, USA
| | | | | | - Nan Shen
- Joint Molecular Rheumatology Laboratory of Institute of Health Sciences and Shanghai Renji Hospital, Shanghai, China
| | | | | | - Yihong Yao
- MedImmune, LLC, Gaithersburg, MD 20878, USA.
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Pal S, Shankar BS, Sainis KB. Cytokines from the tumor microenvironment modulate sirtinol cytotoxicity in A549 lung carcinoma cells. Cytokine 2013; 64:196-207. [PMID: 23972545 DOI: 10.1016/j.cyto.2013.07.029] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/26/2013] [Revised: 07/15/2013] [Accepted: 07/30/2013] [Indexed: 11/19/2022]
Abstract
Cytokines in tumor microenvironment play an important role in the success or failure of molecular targeted therapies. We have chosen tumor necrosis factor α (TNF-α), TNF related apoptosis inducing ligand (TRAIL), insulin-like growth factor 1 (IGF-1) and transforming growth factor β (TGF-β) as representative pro-inflammatory, pro-apoptotic, anti-apoptotic and anti-inflammatory tumor derived cytokines. Analysis of Oncomine database revealed the differential expression of these cytokines in a subset of cancer patients. The effects of these cytokines on cytotoxicity of FDA approved drugs - cisplatin and taxol and inhibitors of epidermal growth factor receptor - AG658, Janus kinase - AG490 and SIRT1 - sirtinol were assessed in A549 lung cancer cells. TRAIL augmented cytotoxicity of sirtinol and IGF-1 had a sparing effect. Since TRAIL and IGF-1 differentially modulated sirtinol cytotoxicity, further studies were carried out to identify the mechanisms. Sirtinol or knockdown of SIRT1 increased the expression of death receptors DR4 and DR5 and sensitized A549 cells to TRAIL. Increased cell death in presence of TRAIL and sirtinol was caspase independent and demonstrated classical features of necroptosis. Inhibition of iNOS increased caspase activity and switched the mode of cell death to caspase mediated apoptosis. Interestingly, sirtinol or SIRT1 knockdown did not increase IGF-1R expression. Instead, it abrogated ligand induced downregulation of IGF-1R and increased cell survival through PI3K-AKT pathway. In conclusion, these findings reveal that the tumor microenvironment contributes to modulation of cytotoxicity of drugs and that combination therapy, with agents that increase TRAIL signaling and suppress IGF-1 pathway may potentiate anticancer effect.
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Affiliation(s)
- Shyama Pal
- Radiation Biology & Health Sciences Division, Bio-Medical Group, Bhabha Atomic Research Centre, Modular Laboratories, Mumbai 400085, India
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Bockhorn J, Dalton R, Nwachukwu C, Huang S, Prat A, Yee K, Chang YF, Huo D, Wen Y, Swanson KE, Qiu T, Lu J, Park SY, Dolan ME, Perou CM, Olopade OI, Clarke MF, Greene GL, Liu H. MicroRNA-30c inhibits human breast tumour chemotherapy resistance by regulating TWF1 and IL-11. Nat Commun 2013; 4:1393. [PMID: 23340433 DOI: 10.1038/ncomms2393] [Citation(s) in RCA: 194] [Impact Index Per Article: 17.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2012] [Accepted: 12/14/2012] [Indexed: 02/07/2023] Open
Abstract
Chemotherapy resistance frequently drives tumour progression. However, the underlying molecular mechanisms are poorly characterized. Epithelial-to-mesenchymal transition has been shown to correlate with therapy resistance, but the functional link and signalling pathways remain to be elucidated. Here we report that microRNA-30c, a human breast tumour prognostic marker, has a pivotal role in chemoresistance by a direct targeting of the actin-binding protein twinfilin 1, which promotes epithelial-to-mesenchymal transition. An interleukin-6 family member, interleukin-11 is identified as a secondary target of twinfilin 1 in the microRNA-30c signalling pathway. Expression of microRNA-30c inversely correlates with interleukin-11 expression in primary breast tumours and low interleukin-11 correlates with relapse-free survival in breast cancer patients. Our study demonstrates that microRNA-30c is transcriptionally regulated by GATA3 in breast tumours. Identification of a novel microRNA-mediated pathway that regulates chemoresistance in breast cancer will facilitate the development of novel therapeutic strategies.
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Affiliation(s)
- Jessica Bockhorn
- The Ben May Department for Cancer Research, The University of Chicago, Chicago, IL 60637, USA
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Codony-Servat J, Marín-Aguilera M, Visa L, García-Albéniz X, Pineda E, Fernández PL, Filella X, Gascón P, Mellado B. Nuclear factor-kappa B and interleukin-6 related docetaxel resistance in castration-resistant prostate cancer. Prostate 2013; 73:512-21. [PMID: 23038213 DOI: 10.1002/pros.22591] [Citation(s) in RCA: 45] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/04/2012] [Accepted: 08/30/2012] [Indexed: 12/16/2022]
Abstract
BACKGROUND Previous work showed that the NF-κB survival pathway is activated by docetaxel (D) and contributes to D resistance in prostate cancer. In this study we aimed to investigate the dynamics of the relationship between NF-κB and IL-6 in the shift from D-naive castration-resistant prostate cancer (CRPC) to D-resistance in patients and cell lines. METHODS CRPC tumor samples were tested for NF-κB/p65 and IL-6 by immunohistochemistry. CRPC patients treated with D were also tested for serum IL-6 (ELISA). Two D-resistant cell lines, PC-3R and DU-145R, derived from the CRPC cells PC-3 and DU-145, respectively, were tested for NF-κB activation (EMSA), NF-κB-related genes expression (RT-PCR), NF-κB inhibition (p65 siRNA) and IL-6 and IL-8 soluble levels (ELISA). RESULTS In CRPC patients treated with D (n = 72), pre-treatment IL-6 level correlated with nuclear NF-κB/p65 tumor staining and response to D, and was an independent prognostic factor for overall survival. However, IL-6 level changes under treatment did not correlate with clinical outcome. In PC-3 and DU-145 parental CRPC cells, as well as in D-resistant counterparts, D treatment induced NF-κB activation. In fact, NF-κB inhibition was sufficient to re-sensitize DU-145R cells to D. Despite enhanced NF-κB activity, IL-6 secretion in D-resistant cell lines was reduced and not induced by D treatment. The same occurred with IL-8 cytokine. CONCLUSIONS These preclinical and clinical results support a role of NF-κB and IL-6 in the resistance to D in CRPC, and support the investigation of targeted therapies to enhance the antitumor activity of D in this patient population.
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Affiliation(s)
- Jordi Codony-Servat
- Medical Oncology Department and Laboratory of Translational Oncology, Hospital Clínic-Fundació Clínic per a la recerca Biomèdica, Barcelona, Spain
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Taylor TE, Furnari FB, Cavenee WK. Targeting EGFR for treatment of glioblastoma: molecular basis to overcome resistance. Curr Cancer Drug Targets 2012; 12:197-209. [PMID: 22268382 DOI: 10.2174/156800912799277557] [Citation(s) in RCA: 166] [Impact Index Per Article: 13.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2010] [Revised: 05/30/2011] [Accepted: 06/27/2011] [Indexed: 12/17/2022]
Abstract
Glioblastoma (glioblastoma multiforme; GBM; WHO Grade IV) accounts for the majority of primary malignant brain tumors in adults. Amplification and mutation of the epidermal growth factor receptor (EGFR) gene represent signature genetic abnormalities encountered in GBM. A range of potential therapies that target EGFR or its mutant constitutively active form, ΔEGFR, including tyrosine kinase inhibitors (TKIs), monoclonal antibodies, vaccines, and RNA-based agents, are currently in development or in clinical trials for the treatment of GBM. Data from experimental studies evaluating these therapies have been very promising; however, their efficacy in the clinic has so far been limited by both upfront and acquired drug resistance. This review discusses the current status of anti-EGFR agents and the recurrent problem of resistance to these agents that strongly indicates that a multiple target approach will provide a more favorable future for these types of targeted therapies in GBM.
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Affiliation(s)
- T E Taylor
- Ludwig Institute for Cancer Research, La Jolla, CA, USA
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Kim SM, Kwon OJ, Hong YK, Kim JH, Solca F, Ha SJ, Soo RA, Christensen JG, Lee JH, Cho BC. Activation of IL-6R/JAK1/STAT3 Signaling Induces De Novo Resistance to Irreversible EGFR Inhibitors in Non–Small Cell Lung Cancer with T790M Resistance Mutation. Mol Cancer Ther 2012; 11:2254-64. [DOI: 10.1158/1535-7163.mct-12-0311] [Citation(s) in RCA: 148] [Impact Index Per Article: 12.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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Guo Y, Xu F, Lu T, Duan Z, Zhang Z. Interleukin-6 signaling pathway in targeted therapy for cancer. Cancer Treat Rev 2012; 38:904-10. [PMID: 22651903 DOI: 10.1016/j.ctrv.2012.04.007] [Citation(s) in RCA: 518] [Impact Index Per Article: 43.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2010] [Revised: 02/09/2012] [Accepted: 04/26/2012] [Indexed: 12/29/2022]
Abstract
Interleukin-6 (IL-6) is a multifunctional cytokine which plays an important role in a wide range of biologic activities in different types of cell including tumor cells. IL-6 is involved in the host immune defense mechanism as well as the modulation of growth and differentiation in various malignancies. These effects are mediated by several signaling pathways, in particular the signal transducer and transcription activator 3 (Stat3). There exists abundant evidence demonstrating that deregulated overexpression of IL-6 was associated with tumor progression through inhibition of cancer cell apoptosis, stimulation of angiogenesis, and drug resistance. Clinical studies have revealed that increased serum IL-6 concentrations in patients are associated with advanced tumor stages of various cancers (e.g., multiple myeloma, non-small cell lung carcinoma, colorectal cancer, renal cell carcinoma, prostate cancer, breast cancer and ovarian cancer) and short survival in patients. Therefore, blocking IL-6 signaling is a potential therapeutic strategy for cancer (i.e., anti-IL-6 therapy) characterized by pathological IL-6 overproduction. Preliminary clinical evidence has shown that antibody targeted IL-6 therapy was well tolerated in cancer patients. In this review, we detail the progress of the current understanding of IL-6 signaling pathway in cancer as well as an antibody targeted IL-6 therapy for human cancer.
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Affiliation(s)
- Yuqi Guo
- The Third Affiliated Hospital of Zhengzhou University, Zhengzhou, PR China
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Silverman AM, Nakata R, Shimada H, Sposto R, DeClerck YA. A galectin-3-dependent pathway upregulates interleukin-6 in the microenvironment of human neuroblastoma. Cancer Res 2012; 72:2228-38. [PMID: 22389450 DOI: 10.1158/0008-5472.can-11-2165] [Citation(s) in RCA: 62] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
Abstract
Interleukin-6 (IL-6) is a pleiotropic cytokine with a broad range of physiologic and pathologic functions. Because in cancer, IL-6 contributes to a microenvironment that promotes tumor cell survival, angiogenesis, and inflammation, understanding the mechanism responsible for its production is important. In neuroblastoma, the second most common solid tumor in children, IL-6 is produced not by tumor cells but by stromal cells such as monocytes and bone marrow mesenchymal stem cells (BMMSC). Here we show that the production of IL-6 in BMMSCs is in part stimulated by galectin-3 binding protein (Gal-3BP) secreted by neuroblastoma cells. We identified a distal region of the IL-6 promoter that contains 3 CCATT/enhancer binding protein (C/EBP) binding domains involved in the transcriptional upregulation of IL-6 by Gal-3BP. Gal-3BP interacted with Galectin-3 (Gal-3) present in BMMSCs, and a Gal-3BP/Gal-3/Ras/MEK/ERK signaling pathway was responsible for the transcriptional upregulation of IL-6 in BMMSCs in which Gal-3 has a necessary function. In support of the role of this pathway in human neuroblastoma tumors, Gal-3BP was found to be present in tumor cells and in the adjacent extracellular matrix of 96% of 78 primary neuroblastoma tumor samples examined by immunohistochemistry. Considering the protumorigenic function of IL-6 in cancer, this tumor cell-stromal cell interactive pathway could be a target for anticancer therapy.
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Affiliation(s)
- Ayaka M Silverman
- Division of Hematology-Oncology, Department of Pediatrics, Keck School of Medicine, University of Southern California, Los Angeles, California, USA
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Fizazi K, De Bono J, Flechon A, Heidenreich A, Voog E, Davis N, Qi M, Bandekar R, Vermeulen J, Cornfeld M, Hudes G. Randomised phase II study of siltuximab (CNTO 328), an anti-IL-6 monoclonal antibody, in combination with mitoxantrone/prednisone versus mitoxantrone/prednisone alone in metastatic castration-resistant prostate cancer. Eur J Cancer 2012; 48:85-93. [DOI: 10.1016/j.ejca.2011.10.014] [Citation(s) in RCA: 169] [Impact Index Per Article: 14.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2011] [Revised: 07/22/2011] [Accepted: 10/13/2011] [Indexed: 11/15/2022]
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O'Neill AJ, Prencipe M, Dowling C, Fan Y, Mulrane L, Gallagher WM, O'Connor D, O'Connor R, Devery A, Corcoran C, Rani S, O'Driscoll L, Fitzpatrick JM, Watson RWG. Characterisation and manipulation of docetaxel resistant prostate cancer cell lines. Mol Cancer 2011; 10:126. [PMID: 21982118 PMCID: PMC3203088 DOI: 10.1186/1476-4598-10-126] [Citation(s) in RCA: 159] [Impact Index Per Article: 12.2] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2011] [Accepted: 10/07/2011] [Indexed: 12/26/2022] Open
Abstract
Background There is no effective treatment strategy for advanced castration-resistant prostate cancer. Although Docetaxel (Taxotere®) represents the most active chemotherapeutic agent it only gives a modest survival advantage with most patients eventually progressing because of inherent or acquired drug resistance. The aims of this study were to further investigate the mechanisms of resistance to Docetaxel. Three Docetaxel resistant sub-lines were generated and confirmed to be resistant to the apoptotic and anti-proliferative effects of increasing concentrations of Docetaxel. Results The resistant DU-145 R and 22RV1 R had expression of P-glycoprotein and its inhibition with Elacridar partially and totally reversed the resistant phenotype in the two cell lines respectively, which was not seen in the PC-3 resistant sublines. Resistance was also not mediated in the PC-3 cells by cellular senescence or autophagy but multiple changes in pro- and anti-apoptotic genes and proteins were demonstrated. Even though there were lower basal levels of NF-κB activity in the PC-3 D12 cells compared to the Parental PC-3, docetaxel induced higher NF-κB activity and IκB phosphorylation at 3 and 6 hours with only minor changes in the DU-145 cells. Inhibition of NF-κB with the BAY 11-7082 inhibitor reversed the resistance to Docetaxel. Conclusion This study confirms that multiple mechanisms contribute to Docetaxel resistance and the central transcription factor NF-κB plays an immensely important role in determining docetaxel-resistance which may represent an appropriate therapeutic target.
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Affiliation(s)
- Amanda J O'Neill
- UCD School of Medicine and Medical Science, UCD Conway Institute of Biomolecular and Biomedical Research, University College Dublin, Dublin, Ireland.
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Mahon KL, Henshall SM, Sutherland RL, Horvath LG. Pathways of chemotherapy resistance in castration-resistant prostate cancer. Endocr Relat Cancer 2011; 18:R103-23. [PMID: 21565970 DOI: 10.1530/erc-10-0343] [Citation(s) in RCA: 69] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
Chemotherapy remains the major treatment option for castration-resistant prostate cancer (CRPC) and limited cytotoxic options are available. Inherent chemotherapy resistance occurs in half of all patients and inevitably develops even in those who initially respond. Docetaxel has been the mainstay of therapy for 6 years, providing a small survival benefit at the cost of significant toxicity. Cabazitaxel is a promising second-line agent; however, it is no less toxic, whereas mitoxantrone provides only symptomatic benefit. Multiple cellular pathways involving apoptosis, inflammation, angiogenesis, signalling intermediaries, drug efflux pumps and tubulin are implicated in the development of chemoresistance. A thorough understanding of these pathways is needed to identify biomarkers that predict chemotherapy resistance with the aim to avoid unwarranted toxicities in patients who will not benefit from treatment. Until recently, the search for predictive biomarkers has been disappointing; however, the recent discovery of macrophage inhibitory cytokine 1 as a marker of chemoresistance may herald a new era of biomarker discovery in CRPC. Understanding the interface between this complex array of chemoresistance pathways rather than their study in isolation will be required to effectively predict response and target the late stages of advanced disease. The pre-clinical evidence for these resistance pathways and their progress through clinical trials as therapeutic targets is reviewed in this study.
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Affiliation(s)
- Kate L Mahon
- Department of Medical Oncology, Sydney Cancer Centre, Missenden Road, Camperdown, New South Wales 2050, Australia.
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Lee H, Park MT, Choi BH, Oh ET, Song MJ, Lee J, Kim C, Lim BU, Park HJ. Endoplasmic reticulum stress-induced JNK activation is a critical event leading to mitochondria-mediated cell death caused by β-lapachone treatment. PLoS One 2011; 6:e21533. [PMID: 21738692 PMCID: PMC3127577 DOI: 10.1371/journal.pone.0021533] [Citation(s) in RCA: 38] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2011] [Accepted: 05/31/2011] [Indexed: 11/21/2022] Open
Abstract
Background β-lapachone (β-lap) is a bioreductive agent that is activated by the two-electron reductase NAD(P)H quinone oxidoreductase 1 (NQO1). Although β-lap has been reported to induce apoptosis in various cancer types in an NQO1-dependent manner, the signaling pathways by which β-lap causes apoptosis are poorly understood. Methodology/Principal Findings β-lap-induced apoptosis and related molecular signaling pathways in NQO1-negative and NQO1-overexpressing MDA-MB-231 cells were investigated. Pharmacological inhibitors or siRNAs against factors involved in β-lap-induced apoptosis were used to clarify the roles played by such factors in β-lap-activated apoptotic signaling pathways. β-lap leads to clonogenic cell death and apoptosis in an NQO1- dependent manner. Treatment of NQO1-overexpressing MDA-MB-231 cells with β-lap causes rapid disruption of mitochondrial membrane potential, nuclear translocation of AIF and Endo G from mitochondria, and subsequent caspase-independent apoptotic cell death. siRNAs targeting AIF and Endo G effectively attenuate β-lap-induced clonogenic and apoptotic cell death. Moreover, β-lap induces cleavage of Bax, which accumulates in mitochondria, coinciding with the observed changes in mitochondria membrane potential. Pretreatment with Salubrinal (Sal), an endoplasmic reticulum (ER) stress inhibitor, efficiently attenuates JNK activation caused by β-lap, and subsequent mitochondria-mediated cell death. In addition, β-lap-induced generation and mitochondrial translocation of cleaved Bax are efficiently blocked by JNK inhibition. Conclusions/Significance Our results indicate that β-lap triggers induction of endoplasmic reticulum (ER) stress, thereby leading to JNK activation and mitochondria-mediated apoptosis. The signaling pathways that we revealed in this study may significantly contribute to an improvement of NQO1-directed tumor therapies.
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Affiliation(s)
- Hyemi Lee
- Department of Microbiology, College of Medicine, Center for Advanced Medical Education by BK21 Project, Inha University, Incheon, Republic of Korea
| | - Moon-Taek Park
- Department of Microbiology, College of Medicine, Center for Advanced Medical Education by BK21 Project, Inha University, Incheon, Republic of Korea
| | - Bo-Hwa Choi
- Department of Microbiology, College of Medicine, Center for Advanced Medical Education by BK21 Project, Inha University, Incheon, Republic of Korea
| | - Eun-Taex Oh
- Department of Microbiology, College of Medicine, Center for Advanced Medical Education by BK21 Project, Inha University, Incheon, Republic of Korea
| | - Min-Jeong Song
- Department of Microbiology, College of Medicine, Center for Advanced Medical Education by BK21 Project, Inha University, Incheon, Republic of Korea
| | - Jeonghun Lee
- Department of Polymer Science and Engineering, Inha University, Incheon, Korea
| | - Chulhee Kim
- Department of Polymer Science and Engineering, Inha University, Incheon, Korea
| | - Byung Uk Lim
- Department of Microbiology, College of Medicine, Center for Advanced Medical Education by BK21 Project, Inha University, Incheon, Republic of Korea
| | - Heon Joo Park
- Department of Microbiology, College of Medicine, Center for Advanced Medical Education by BK21 Project, Inha University, Incheon, Republic of Korea
- * E-mail:
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Sakai I, Miyake H, Terakawa T, Fujisawa M. Inhibition of tumor growth and sensitization to chemotherapy by RNA interference targeting interleukin-6 in the androgen-independent human prostate cancer PC3 model. Cancer Sci 2011; 102:769-75. [PMID: 21214673 DOI: 10.1111/j.1349-7006.2011.01854.x] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022] Open
Abstract
The objective of the present study was to investigate the inhibitory effects of interleukin-6 (IL-6) secretion by androgen-independent human prostate cancer PC3 cells on their growth and chemosensitivity. In this study, we established PC3 in which the expression vector containing short hairpin RNA (shRNA) targeting IL-6 was introduced (PC3/sh-IL6). Changes in the growth and sensitivity to docetaxel in PC3/sh-IL6 were compared with those in PC3 transfected with control vector alone (PC3/Co). Concentration of IL-6 in the culture supernatant from PC3/sh-IL6 was approximately 20% of that from PC3/Co. Both in vitro and in vivo, the growth of PC3/sh-IL-6 was significantly inferior to that of PC3/Co, accompanying downregulation of Bcl-2, Bcl-xL, phosphorylated Akt, p44/42 mitogen-activated protein kinase, and signal transducers and activation of transcription 3 in PC3/sh-IL-6 compared with that in PC3/Co. Despite the higher sensitivity of PC3/sh-IL6 to docetaxel than that of PC3/Co, the secretion of IL-6 by both cell lines was increased after treatment with docetaxel due to the formation of positive autocrine loops between these cell lines and NFκB signaling pathways. Furthermore, combined treatment with the proteasome inhibitor bortezomib, which completely inhibited the docetaxel-induced IL-6 secretion via the inactivation of NFκB signaling, resulted in the marked sensitization of these cell lines to docetaxel both in vitro and in vivo. These findings suggest that suppressed IL-6 secretion using shRNA, either alone or in combination with docetaxel and bortezomib, could be a useful therapeutic strategy against androgen-independent prostate cancer.
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Affiliation(s)
- Iori Sakai
- Division of Urology, Kobe University Graduate School of Medicine, Kobe, Japan
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Guo Y, Nemeth J, O'Brien C, Susa M, Liu X, Zhang Z, Choy E, Mankin H, Hornicek F, Duan Z. Effects of siltuximab on the IL-6-induced signaling pathway in ovarian cancer. Clin Cancer Res 2010; 16:5759-69. [PMID: 20699329 DOI: 10.1158/1078-0432.ccr-10-1095] [Citation(s) in RCA: 76] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
PURPOSE To explore potential therapeutic strategies for interrupting the interleukin-6 (IL-6) signaling pathway, we measured IL-6 expression in ovarian cancer tissues, and evaluated the effects of a monoclonal anti-IL-6 antibody; siltuximab (CNTO 328), on levels of IL-6-induced Stat3 phosphorylation, Stat3 nuclear translocation, and Stat3 downstream antiapoptotic genes. We then looked for enhancing paclitaxel sensitivity in multidrug-resistant ovarian cancer cell lines. EXPERIMENTAL DESIGN Expressions of IL-6 in ovarian cancer patient specimens were assessed by immunohistochemistry. Effects of siltuximab on IL-6-induced activation of Stat3 in an ovarian cancer cell line were determined by Western blot and real-time analysis of Stat3 nucleocytoplasmic translocation. Influence of combination of siltuximab and paclitaxel on tumor growth was evaluated in a xenograft mouse mode in vivo. RESULTS Metastatic and drug-resistant recurrent tumors have significantly higher IL-6 expression when compared with the matched primary tumors. Siltuximab specifically suppressed IL-6-induced Stat3 phosphorylation and Stat3 nuclear translocation. Treatment with siltuximab significantly decreased the levels of Stat3 downstream proteins such as MCL-1, Bcl-X(L), and survivin. Treatment with siltuximab reduced expression of multiple IL-6-induced genes in these cell lines. Furthermore, siltuximab increased the cytotoxic effects of paclitaxel in a paclitaxel resistant ovarian cancer cell line in vitro, but combination therapy with siltuximab did not have a significant effect on paclitaxel resistant tumor growth in vivo. CONCLUSIONS These results show that siltuximab effectively block the IL-6 signaling pathways and IL-6-induced gene expression. Blockage of IL-6 signaling may provide benefits for the treatment of ovarian cancer.
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Affiliation(s)
- Yuqi Guo
- Sarcoma Biology Laboratory, Center for Sarcoma and Connective Tissue Oncology, Massachusetts General Hospital, Boston, MA 02114, USA
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Starsíchová A, Lincová E, Pernicová Z, Kozubík A, Soucek K. TGF-beta1 suppresses IL-6-induced STAT3 activation through regulation of Jak2 expression in prostate epithelial cells. Cell Signal 2010; 22:1734-44. [PMID: 20603212 DOI: 10.1016/j.cellsig.2010.06.014] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2010] [Revised: 06/23/2010] [Accepted: 06/24/2010] [Indexed: 10/19/2022]
Abstract
Chronic inflammation plays an important role in the initiation and progression of various human diseases including benign prostatic hyperplasia or prostate cancer. Here we show that the proinflammatory cytokine interleukin-6 (IL-6) has prosurvival effects and chronically activates the Jak2/STAT3 signalling pathway in a model of benign prostatic hyperplasia (BPH-1). We demonstrate that the antiinflammatory cytokine transforming growth factor-beta1 (TGF-beta1), which also permanently activates its canonical signalling pathway through SMAD proteins in BPH-1 cells, modifies the effects of IL-6 on cell proliferation. Importantly, TGF-beta1 inhibits IL-6 signal transduction by decreasing the phosphorylation levels of STAT3. This effect is associated with decreased expression of Jak2 at both mRNA and protein levels. Moreover, we showed that TGF-beta1 inhibits IL-6-induced expression of the cancer-associated gene MUC1. These observations demonstrated a novel interaction between TGF-beta1 and IL-6 signalling and suggested another mechanism of how defects in TGF-beta signalling, frequently associated with prostate pathologies, can contribute to the disruption of tissue homeostasis.
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Affiliation(s)
- Andrea Starsíchová
- Department of Cytokinetics, Institute of Biophysics, Acad Sci Czech Rep, Královopolská 135, CZ-612 65 Brno, Czech Republic
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Karaoz E, Genç ZS, Demircan PÇ, Aksoy A, Duruksu G. Protection of rat pancreatic islet function and viability by coculture with rat bone marrow-derived mesenchymal stem cells. Cell Death Dis 2010; 1:e36. [PMID: 21364643 PMCID: PMC3032304 DOI: 10.1038/cddis.2010.14] [Citation(s) in RCA: 80] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2010] [Revised: 03/10/2010] [Accepted: 03/18/2010] [Indexed: 02/06/2023]
Abstract
The maintenance of viable and functional islets is critical in successful pancreatic islet transplantation from cadaveric sources. During the isolation procedure, islets are exposed to a number of insults including ischemia, oxidative stress and cytokine injury that cause a reduction in the recovered viable islet mass. A novel approach was designed in which streptozotocin (STZ)-damaged rat pancreatic islets (rPIs) were indirectly cocultured with rat bone marrow-derived mesenchymal stem cells (rBM-MSCs) to maintain survival of the cultured rPIs. The results indicated that islets cocultured with rBM-MSCs secreted an increased level of insulin after 14 days, whereas non-cocultured islets gradually deteriorated and cell death occurred. The cocultivation of rBM-MSCs with islets and STZ-damaged islets showed the expression of IL6 and transforming growth factor-β1 in the culture medium, besides the expression of the antiapoptotic genes (Mapkapk2, Tnip1 and Bcl3), implying the cytoprotective, anti-inflammatory and antiapoptotic effects of rBM-SCs through paracrine actions.
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Affiliation(s)
- E Karaoz
- Stem Cell and Gene Therapy Research and Application Center, Kocaeli University, Kocaeli, Turkey.
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