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Slavik H, Balik V, Vrbkova J, Rehulkova A, Vaverka M, Hrabalek L, Ehrmann J, Vidlarova M, Gurska S, Hajduch M, Srovnal J. Identification of Meningioma Patients at High Risk of Tumor Recurrence Using MicroRNA Profiling. Neurosurgery 2021; 87:1055-1063. [PMID: 32125436 PMCID: PMC7566524 DOI: 10.1093/neuros/nyaa009] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2019] [Accepted: 12/15/2019] [Indexed: 12/15/2022] Open
Abstract
BACKGROUND Meningioma growth rates are highly variable, even within benign subgroups, with some remaining stable, whereas others grow rapidly. OBJECTIVE To identify molecular-genetic markers for more accurate prediction of meningioma recurrence and better-targeted therapy. METHODS Microarrays identified microRNA (miRNA) expression in primary and recurrent meningiomas of all World Health Organization (WHO) grades. Those found to be deregulated were further validated by quantitative real-time polymerase chain reaction in a cohort of 172 patients. Statistical analysis of the resulting dataset revealed predictors of meningioma recurrence. RESULTS Adjusted and nonadjusted models of time to relapse identified the most significant prognosticators to be miR-15a-5p, miR-146a-5p, and miR-331-3p. The final validation phase proved the crucial significance of miR-146a-5p and miR-331-3p, and clinical factors such as type of resection (total or partial) and WHO grade in some selected models. Following stepwise selection in a multivariate model on an expanded cohort, the most predictive model was identified to be that which included lower miR-331-3p expression (hazard ratio [HR] 1.44; P < .001) and partial tumor resection (HR 3.90; P < .001). Moreover, in the subgroup of total resections, both miRNAs remained prognosticators in univariate models adjusted to the clinical factors. CONCLUSION The proposed models might enable more accurate prediction of time to meningioma recurrence and thus determine optimal postoperative management. Moreover, combining this model with current knowledge of molecular processes underpinning recurrence could permit the identification of distinct meningioma subtypes and enable better-targeted therapies.
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Affiliation(s)
- Hanus Slavik
- Laboratory of Experimental Medicine, Institute of Molecular and Translational Medicine, Faculty of Medicine and Dentistry, Palacky University and University Hospital Olomouc, Czech Republic
| | - Vladimir Balik
- Laboratory of Experimental Medicine, Institute of Molecular and Translational Medicine, Faculty of Medicine and Dentistry, Palacky University and University Hospital Olomouc, Czech Republic.,Department of Neurosurgery, Faculty of Medicine and Dentistry, Palacky University and University Hospital Olomouc, Czech Republic
| | - Jana Vrbkova
- Laboratory of Experimental Medicine, Institute of Molecular and Translational Medicine, Faculty of Medicine and Dentistry, Palacky University and University Hospital Olomouc, Czech Republic
| | - Alona Rehulkova
- Laboratory of Experimental Medicine, Institute of Molecular and Translational Medicine, Faculty of Medicine and Dentistry, Palacky University and University Hospital Olomouc, Czech Republic
| | - Miroslav Vaverka
- Department of Neurosurgery, Faculty of Medicine and Dentistry, Palacky University and University Hospital Olomouc, Czech Republic
| | - Lumir Hrabalek
- Department of Neurosurgery, Faculty of Medicine and Dentistry, Palacky University and University Hospital Olomouc, Czech Republic
| | - Jiri Ehrmann
- Laboratory of Experimental Medicine, Institute of Molecular and Translational Medicine, Faculty of Medicine and Dentistry, Palacky University and University Hospital Olomouc, Czech Republic.,Institute of Clinical and Molecular Pathology, Faculty of Medicine and Dentistry, Palacky University and University Hospital Olomouc, Czech Republic, Czech Republic
| | - Monika Vidlarova
- Laboratory of Experimental Medicine, Institute of Molecular and Translational Medicine, Faculty of Medicine and Dentistry, Palacky University and University Hospital Olomouc, Czech Republic
| | - Sona Gurska
- Laboratory of Experimental Medicine, Institute of Molecular and Translational Medicine, Faculty of Medicine and Dentistry, Palacky University and University Hospital Olomouc, Czech Republic
| | - Marian Hajduch
- Laboratory of Experimental Medicine, Institute of Molecular and Translational Medicine, Faculty of Medicine and Dentistry, Palacky University and University Hospital Olomouc, Czech Republic
| | - Josef Srovnal
- Laboratory of Experimental Medicine, Institute of Molecular and Translational Medicine, Faculty of Medicine and Dentistry, Palacky University and University Hospital Olomouc, Czech Republic
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Di Meo A, Wang C, Cheng Y, Diamandis EP, Yousef GM. The miRNA-kallikrein interaction: a mosaic of epigenetic regulation in cancer. Biol Chem 2019; 399:973-982. [PMID: 29604203 DOI: 10.1515/hsz-2018-0112] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2017] [Accepted: 03/26/2018] [Indexed: 12/28/2022]
Abstract
The kallikrein-related peptidases (KLKs) constitute a family of 15 highly conserved serine proteases with trypsin- and chymotrypsin-like activities. Dysregulated expression and/or aberrant activation of KLKs has been linked to various pathophysiological processes, including cancer. Many KLKs have been identified as potential cancer biomarkers. microRNAs (miRNAs) are a class of small non-coding RNAs that regulate gene expression by pairing to the 3' untranslated region (UTR) of complimentary mRNA targets. miRNAs are dysregulated in many cancers, including prostate, kidney and ovarian cancers. Several studies have shown that miRNAs are involved in the post-transcriptional regulation of KLKs. However, recent evidence suggests that miRNAs can also act as downstream effectors of KLKs. In this review, we provide an update on the epigenetic regulation of KLKs by miRNAs. We also present recent experimental evidence that supports the regulatory role of KLKs on miRNA networks. The potential diagnostic and therapeutic applications of miRNA-kallikrein interactions are also discussed.
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Affiliation(s)
- Ashley Di Meo
- Department of Laboratory Medicine and Pathobiology, University of Toronto, Toronto, ON, M5S 1A8, Canada
- Department of Laboratory Medicine, and the Keenan Research Centre for Biomedical Science at the Li Ka Shing Knowledge Institute, St. Michael's Hospital, 30 Bond Street, Toronto, ON, M5B 1W8, Canada
| | - Cong Wang
- Department of Laboratory Medicine, and the Keenan Research Centre for Biomedical Science at the Li Ka Shing Knowledge Institute, St. Michael's Hospital, 30 Bond Street, Toronto, ON, M5B 1W8, Canada
- Department of Radiation Oncology, Qilu Hospital of Shandong University, Jinan 250012, Shandong, China
| | - Yufeng Cheng
- Department of Radiation Oncology, Qilu Hospital of Shandong University, Jinan 250012, Shandong, China
| | - Eleftherios P Diamandis
- Department of Laboratory Medicine and Pathobiology, University of Toronto, Toronto, ON, M5S 1A8, Canada
- Department of Pathology and Laboratory Medicine, Mount Sinai Hospital, Toronto, ON, M5T 3L9, Canada
| | - George M Yousef
- Department of Laboratory Medicine and Pathobiology, University of Toronto, Toronto, ON, M5S 1A8, Canada
- Department of Laboratory Medicine, and the Keenan Research Centre for Biomedical Science at the Li Ka Shing Knowledge Institute, St. Michael's Hospital, 30 Bond Street, Toronto, ON, M5B 1W8, Canada
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3
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Papadopoulos EI, Papachristopoulou G, Ardavanis A, Scorilas A. A comprehensive clinicopathological evaluation of the differential expression of microRNA-331 in breast tumors and its diagnostic significance. Clin Biochem 2018; 60:24-32. [PMID: 30063890 DOI: 10.1016/j.clinbiochem.2018.07.008] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2018] [Revised: 07/12/2018] [Accepted: 07/19/2018] [Indexed: 12/11/2022]
Abstract
OBJECTIVE MicroRNA-331 (miR-331) has shown regulatory activity against several genes whose expression has been claimed to be deregulated in breast tumors, including that of epidermal growth factor receptor 2 (HER2). Herein, the clinical value of miR-331 expression was investigated by analyzing its levels in breast benign and malignant tumors. METHODS The expression levels of miR-331 were quantified via real-time PCR in 130 malignant and 66 benign breast tissue specimens collected after surgical resection of primary tumors. The generated data were analyzed by applying several statistical tests in order to examine the relationship of miR-331 expression with various established clinicopathological features and survival data of patients. RESULTS Our data showed that miR-331 was overexpressed in malignant breast tumors compared to their benign counterparts both overall (P = 0.026) and individually when the subgroups of fibroadenoma and invasive ductal carcinoma were analyzed with each other (P = 0.001). ROC curve analysis confirmed the diagnostic value of these variations, providing an AUC value equal to 0.597 (P = 0.026) and 0.663 (P = 0.001), respectively. Furthermore, miR-331 levels were elevated (P = 0.026) in ductal cancerous specimens compared to the lobular ones but failed to correlate with other clinicopathological features or survival data of the breast cancer patients. CONCLUSIONS Our results provide evidence that miR-331 levels might provide valuable information regarding the differential diagnosis of benign and malignant breast tumors but present no prognostic value for breast cancer.
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MESH Headings
- Adenofibroma/diagnosis
- Adenofibroma/genetics
- Adenofibroma/pathology
- Biomarkers, Tumor/metabolism
- Breast Neoplasms/diagnosis
- Breast Neoplasms/genetics
- Breast Neoplasms/pathology
- Carcinoma, Ductal, Breast/diagnosis
- Carcinoma, Ductal, Breast/genetics
- Carcinoma, Ductal, Breast/pathology
- Carcinoma, Lobular/diagnosis
- Carcinoma, Lobular/genetics
- Carcinoma, Lobular/pathology
- Diagnosis, Differential
- Female
- Humans
- MicroRNAs/genetics
- Prognosis
- Real-Time Polymerase Chain Reaction
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Affiliation(s)
- Emmanuel I Papadopoulos
- Department of Biochemistry and Molecular Biology, Faculty of Biology, National and Kapodistrian University of Athens, Panepistimiopolis, Athens, Greece
| | - Georgia Papachristopoulou
- Department of Biochemistry and Molecular Biology, Faculty of Biology, National and Kapodistrian University of Athens, Panepistimiopolis, Athens, Greece; First Department of Pathology, School of Medicine, National and Kapodistrian University of Athens, Greece; Department of Pathology, "Saint Savvas" Cancer Hospital of Athens, Greece
| | - Alexandros Ardavanis
- First Department of Medical Oncology, "Saint Savvas" Cancer Hospital of Athens, 171 Alexandras Ave., 11522 Athens, Greece
| | - Andreas Scorilas
- Department of Biochemistry and Molecular Biology, Faculty of Biology, National and Kapodistrian University of Athens, Panepistimiopolis, Athens, Greece.
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Adamopoulos PG, Tsiakanikas P, Scorilas A. Kallikrein-related peptidases and associated microRNAs as promising prognostic biomarkers in gastrointestinal malignancies. Biol Chem 2018; 399:821-836. [DOI: 10.1515/hsz-2017-0342] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2017] [Accepted: 04/17/2018] [Indexed: 02/06/2023]
Abstract
Abstract
Gastrointestinal (GI) malignancies represent a wide spectrum of diseases of the GI tract and its accessory digestive organs, including esophageal (EC), gastric (GC), hepatocellular, pancreatic (PC) and colorectal cancers (CRC). Malignancies of the GI system are responsible for nearly 30% of cancer-related morbidity and approximately 40% of cancer-related mortality, worldwide. For this reason, the discovery of novel prognostic biomarkers that can efficiently provide a better prognosis, risk assessment and prediction of treatment response is an imperative need. Human kallikrein-related peptidases (KLKs) are a subgroup of trypsin and chymotrypsin-like serine peptidases that have emerged as promising prognosticators for many human types of cancer, being aberrantly expressed in cancerous tissues. The aberrant expression of KLKs in human malignancies is often regulated by KLK/microRNAs (miRNAs) interactions, as many miRNAs have been found to target KLKs and therefore alter their expression levels. The biomarker utility of KLKs has been elucidated not only in endocrine-related human malignancies, including those of the prostate and breast, but also in GI malignancies. The main purpose of this review is to summarize the existing information regarding the prognostic significance of KLKs in major types of GI malignancies and highlight the regulatory role of miRNAs on the expression levels of KLKs in these types of cancer.
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Affiliation(s)
- Panagiotis G. Adamopoulos
- Department of Biochemistry and Molecular Biology , National and Kapodistrian University of Athens, Panepistimiopolis , Athens GR-15701 , Greece
| | - Panagiotis Tsiakanikas
- Department of Biochemistry and Molecular Biology , National and Kapodistrian University of Athens, Panepistimiopolis , Athens GR-15701 , Greece
| | - Andreas Scorilas
- Department of Biochemistry and Molecular Biology , National and Kapodistrian University of Athens, Panepistimiopolis , Athens GR-15701 , Greece
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Dorn J, Bayani J, Yousef GM, Yang F, Magdolen V, Kiechle M, Diamandis EP, Schmitt M. Clinical utility of kallikrein-related peptidases (KLK) in urogenital malignancies. Thromb Haemost 2017; 110:408-22. [DOI: 10.1160/th13-03-0206] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2013] [Accepted: 05/25/2013] [Indexed: 12/19/2022]
Abstract
SummaryKallikrein-related peptidases (KLK), which represent a major tissue-associated proteolytic system, stand for a rich source of biomarkers that may allow molecular classification, early diagnosis and prognosis of human malignancies as well as prediction of response or failure to cancer-directed drugs. International research points to an important role of certain KLKs in female and male urogenital tract malignancies, in addition to cancers of the lung, brain, skin, head and neck, and the gastrointestinal tract. Regarding the female/male urogenital tract, remarkably, all of the KLKs are expressed in the normal prostate, testis, and kidney whereas the uterus, the ovary, and the urinary bladder are expressing a limited number of KLKs only. Most of the information regarding KLK expression in tumour-affected organs is available for ovarian cancer; all of the 12 KLKs tested so far were found to be elevated in the malignant state, depicting them as valuable biomarkers to distinguish between the normal and the cancerous phenotype. In contrast, for kidney cancer, a series of KLKs was found to be downregulated, while other KLKs were not expressed. Evidently, depending on the type of cancer or cancer stage, individual KLKs may show characteristics of a Janus-faced behaviour, by either expanding or inhibiting cancer progression and metastasis.
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Sells E, Pandey R, Chen H, Skovan BA, Cui H, Ignatenko NA. Specific microRNA-mRNA Regulatory Network of Colon Cancer Invasion Mediated by Tissue Kallikrein-Related Peptidase 6. Neoplasia 2017; 19:396-411. [PMID: 28431272 PMCID: PMC5397577 DOI: 10.1016/j.neo.2017.02.003] [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: 12/15/2016] [Revised: 02/02/2017] [Accepted: 02/06/2017] [Indexed: 01/05/2023] Open
Abstract
Metastatic colon cancer is a major cause of deaths among colorectal cancer (CRC) patients. Elevated expression of kallikrein 6 (KLK6), a member of a kallikrein subfamily of peptidase S1 family serine proteases, has been reported in CRC and is associated with low patient survival rates and poor disease prognosis. We knocked down KLK6 expression in HCT116 colon cancer cells to determine the significance of KLK6 expression for metastatic dissemination and to identify the KLK6-associated microRNAs (miRNAs) signaling networks in metastatic colon cancer. KLK6 suppression resulted in decreased cells invasion in vitro with a minimal effect on the cell growth and viability. In vivo, animals with orthotopic colon tumors deficient in KLK6 expression had the statistically significant increase in survival rates (P = .005) and decrease in incidence of distant metastases. We further performed the integrated miRNA and messenger RNA (mRNA) expression profiling to identify functional miRNA-mRNA interactions associated with KLK6-mediated invasiveness of colon cancer. Through bioinformatics analysis we identified and functionally validated the top two up-regulated miRNAs, miR-182 and miR-203, and one down-regulated miRNA, miRNA-181d, and their seven mRNA effectors. The established miRNA-mRNA interactions modulate cellular proliferation, differentiation and epithelial–mesenchymal transition (EMT) in KLK6-expressing colon cancer cells via the TGF-β signaling pathway and RAS-related GTP-binding proteins. We confirmed the potential tumor suppressive properties of miR-181d and miR-203 in KLK6-expressing HCT116 cells using Matrigel invasion assay. Our data provide experimental evidence that KLK6 controls metastasis formation in colon cancer via specific downstream network of miRNA-mRNA effectors.
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Affiliation(s)
- Earlphia Sells
- Biochemistry and, Molecular and Cellular Biology Graduate Program, Department of Molecular and Cellular Biology, College of Science, University of Arizona, Tucson, AZ, USA
| | - Ritu Pandey
- University of Arizona, Cancer Center, University of Arizona, Tucson, AZ, USA; Department of Cellular and Molecular Medicine, University of Arizona, Tucson, AZ, USA
| | - Hwudaurw Chen
- University of Arizona, Cancer Center, University of Arizona, Tucson, AZ, USA
| | - Bethany A Skovan
- University of Arizona, Cancer Center, University of Arizona, Tucson, AZ, USA
| | - Haiyan Cui
- University of Arizona, Cancer Center, University of Arizona, Tucson, AZ, USA
| | - Natalia A Ignatenko
- Department of Cellular and Molecular Medicine, University of Arizona, Tucson, AZ, USA.
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7
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Fujii T, Shimada K, Asano A, Tatsumi Y, Yamaguchi N, Yamazaki M, Konishi N. MicroRNA-331-3p Suppresses Cervical Cancer Cell Proliferation and E6/E7 Expression by Targeting NRP2. Int J Mol Sci 2016; 17:ijms17081351. [PMID: 27548144 PMCID: PMC5000747 DOI: 10.3390/ijms17081351] [Citation(s) in RCA: 39] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2016] [Revised: 08/11/2016] [Accepted: 08/12/2016] [Indexed: 02/06/2023] Open
Abstract
Aberrant expression of microRNAs (miRNAs) is involved in the development and progression of various types of cancers. In this study, we investigated the role of miR-331-3p in cell proliferation and the expression of keratinocyte differentiation markers of uterine cervical cancer cells. Moreover, we evaluated whether neuropilin 2 (NRP2) are putative target molecules that regulate the human papillomavirus (HPV) related oncoproteins E6 and E7. Cell proliferation in the human cervical cancer cell lines SKG-II, HCS-2, and HeLa was assessed using the 3-(4,5-dimethylthiazol-2-yl)-5-(3-carboxymethoxyphenyl)-2-(4-sulfophenyl)-2H-tetrazolium, inner salt (MTS) assay. Cellular apoptosis was measured using the TdT-mediated dUTP nick end labeling (TUNEL) and Annexin V assays. Quantitative RT-PCR was used to measure the messenger RNA (mRNA) expression of the NRP2, E6, E7, p63, and involucrin (IVL) genes. A functional assay for cell growth was performed using cell cycle analyses. Overexpression of miR-331-3p inhibited cell proliferation, and induced G2/M phase arrest and apoptosis in SKG-II, HCS-2 and HeLa cells. The luciferase reporter assay of the NRP2 3′-untranslated region revealed the direct regulation of NRP2 by miR-331-3p. Gene expression analyses using quantitative RT-PCR in SKG-II, HCS-2, and HeLa cells overexpressing miR-331-3p or suppressing NRP2 revealed down-regulation of E6, E7, and p63 mRNA and up-regulation of IVL mRNA. Moreover, miR-331-3p overexpression was suppressed NRP2 expression in protein level. We showed that miR-331-3p and NRP2 were key effectors of cell proliferation by regulating the cell cycle, apoptosis. NRP-2 also regulates the expression of E6/E7 and keratinocyte differentiation markers. Our findings suggest that miR-331-3p has an important role in regulating cervical cancer cell proliferation, and that miR-331-3p may contribute to keratinocyte differentiation through NRP2 suppression. miR-331-3p and NRP2 may contribute to anti-cancer effects.
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Affiliation(s)
- Tomomi Fujii
- Department of Pathology, Nara Medical University School of Medicine, Nara 634-8521, Japan.
| | - Keiji Shimada
- Department of Diagnostic Pathology, Nara City Hospital, Nara 630-8305, Japan.
| | - Aya Asano
- Department of Pathology, Nara Medical University School of Medicine, Nara 634-8521, Japan.
| | - Yoshihiro Tatsumi
- Department of Pathology, Nara Medical University School of Medicine, Nara 634-8521, Japan.
| | - Naoko Yamaguchi
- Department of Central Clinical Laboratory, Nara Medical University Hospital, Nara 634-8521, Japan.
| | - Masaharu Yamazaki
- Department of Central Clinical Laboratory, Nara Medical University Hospital, Nara 634-8521, Japan.
| | - Noboru Konishi
- Department of Pathology, Nara Medical University School of Medicine, Nara 634-8521, Japan.
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8
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Sidiropoulos KG, Ding Q, Pampalakis G, White NMA, Boulos P, Sotiropoulou G, Yousef GM. KLK6-regulated miRNA networks activate oncogenic pathways in breast cancer subtypes. Mol Oncol 2016; 10:993-1007. [PMID: 27093921 DOI: 10.1016/j.molonc.2016.03.008] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2015] [Revised: 03/28/2016] [Accepted: 03/31/2016] [Indexed: 12/21/2022] Open
Abstract
KLK6 is expressed in normal mammary tissues and is aberrantly regulated in breast cancer. At physiological levels of expression, i.e. those found in normal mammary tissues, KLK6 acts as a tumor suppressor in human breast cancer. However, aberrant overexpression of KLK6 (i.e. 50-100-fold higher than normal), a characteristic of a subset of human breast cancers is associated with increased tumorigenicity (Pampalakis et al. Cancer Res 69:3779-3787, 2009). Here, we stably transfected KLK6-non-expressing MDA-MB-231 breast cancer cells with the full-length KLK6 cDNA to overexpress KLK6 at levels comparable to those observed in patients, and investigated potential oncogenic miRNA networks regulated by these abnormally high KLK6 expression levels and increased activity of this serine protease. A number of miRNAs that are upregulated (e.g. miR-146a) or downregulated (e.g. miR-34a) via KLK6-induced alterations in the miRNA biogenesis machinery were identified. Integrated experimental and bioinformatics analyses identified convergent miRNA networks targeting the cell cycle, MYC, MAPK, and other signaling pathways. In large clinical datasets, significant correlations between KLK6 and downstream MAPK and MYC targets at both the RNA and protein levels was confirmed, as well as negative correlation with GATA3. It was also demonstrated that KLK6 overexpression and likely its proteolytic activity is associated with alterations in downstream miRNAs and their targets, and these differ with the molecular subtypes of breast cancer. The data partly explains the different characteristics of breast cancer subtypes. Importantly, we introduce a combined KLK6-CDKN1B+MYC+CDKN1C score for prediction of long-term patient survival outcomes, with higher scores indicating poor survival.
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Affiliation(s)
- Konstantinos G Sidiropoulos
- The Keenan Research Center in the Li Ka Shing Knowledge Institute and Department of Laboratory Medicine, St. Michael's Hospital, Toronto, M5B 1W8, Canada; Department of Laboratory Medicine and Pathobiology, University of Toronto, Toronto, M5S 1A8, Canada
| | - Qiang Ding
- The Keenan Research Center in the Li Ka Shing Knowledge Institute and Department of Laboratory Medicine, St. Michael's Hospital, Toronto, M5B 1W8, Canada
| | | | - Nicole M A White
- The Keenan Research Center in the Li Ka Shing Knowledge Institute and Department of Laboratory Medicine, St. Michael's Hospital, Toronto, M5B 1W8, Canada; Department of Laboratory Medicine and Pathobiology, University of Toronto, Toronto, M5S 1A8, Canada
| | - Peter Boulos
- The Keenan Research Center in the Li Ka Shing Knowledge Institute and Department of Laboratory Medicine, St. Michael's Hospital, Toronto, M5B 1W8, Canada
| | | | - George M Yousef
- The Keenan Research Center in the Li Ka Shing Knowledge Institute and Department of Laboratory Medicine, St. Michael's Hospital, Toronto, M5B 1W8, Canada; Department of Laboratory Medicine and Pathobiology, University of Toronto, Toronto, M5S 1A8, Canada.
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9
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The kallikrein-related peptidase family: Dysregulation and functions during cancer progression. Biochimie 2015; 122:283-99. [PMID: 26343558 DOI: 10.1016/j.biochi.2015.09.002] [Citation(s) in RCA: 61] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2015] [Accepted: 09/01/2015] [Indexed: 01/07/2023]
Abstract
Cancer is the second leading cause of death with 14 million new cases and 8.2 million cancer-related deaths worldwide in 2012. Despite the progress made in cancer therapies, neoplastic diseases are still a major therapeutic challenge notably because of intra- and inter-malignant tumour heterogeneity and adaptation/escape of malignant cells to/from treatment. New targeted therapies need to be developed to improve our medical arsenal and counter-act cancer progression. Human kallikrein-related peptidases (KLKs) are secreted serine peptidases which are aberrantly expressed in many cancers and have great potential in developing targeted therapies. The potential of KLKs as cancer biomarkers is well established since the demonstration of the association between KLK3/PSA (prostate specific antigen) levels and prostate cancer progression. In addition, a constantly increasing number of in vitro and in vivo studies demonstrate the functional involvement of KLKs in cancer-related processes. These peptidases are now considered key players in the regulation of cancer cell growth, migration, invasion, chemo-resistance, and importantly, in mediating interactions between cancer cells and other cell populations found in the tumour microenvironment to facilitate cancer progression. These functional roles of KLKs in a cancer context further highlight their potential in designing new anti-cancer approaches. In this review, we comprehensively review the biochemical features of KLKs, their functional roles in carcinogenesis, followed by the latest developments and the successful utility of KLK-based therapeutics in counteracting cancer progression.
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Theodore SC, Davis M, Zhao F, Wang H, Chen D, Rhim J, Dean-Colomb W, Turner T, Ji W, Zeng G, Grizzle W, Yates C. MicroRNA profiling of novel African American and Caucasian Prostate Cancer cell lines reveals a reciprocal regulatory relationship of miR-152 and DNA methyltranferase 1. Oncotarget 2015; 5:3512-25. [PMID: 25004396 PMCID: PMC4116499 DOI: 10.18632/oncotarget.1953] [Citation(s) in RCA: 46] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022] Open
Abstract
miRNA expression in African American compared to Caucasian PCa patients has not been widely explored. Herein, we probed the miRNA expression profile of novel AA and CA derived prostate cancer cell lines. We found a unique miRNA signature associated with AA cell lines, independent of tumor status. Evaluation of the most differentially expressed miRNAs showed that miR-132, miR-367b, miR-410, and miR-152 were decreased in more aggressive cells, and this was reversed after treatment of the cells with 5-aza-2′-deoxycytidine. Sequencing of the miR-152 promoter confirmed that it was highly methylated. Ectopic expression of miR-152 resulted in decreased growth, migration, and invasion. Informatics analysis of a large patient cohort showed that decreased miR-152 expression correlated with increased metastasis and a decrease in biochemical recurrence free survival. Analysis of 39 prostate cancer tissues with matched controls (20 AA and 19 CA), showed that 50% of AA patients had statistically significant lower miR-152 expression compared to only 35% of CA patients. Ectopic expression of miR-152 in LNCaP, PC-3, and MDA-PCa-2b cells down-regulated DNA (cytosine-5)-methyltransferase 1 (DNMT1) through direct binding in the DNMT1 3'UTR. There appeared to be a reciprocal regulatory relationship of miR-152/DNMT1 expression, as cells treated with siRNA DNMT1 caused miR-152 to be re-expressed in all cell lines. In summary, these results demonstrate that epigenetic regulation of miR-152/DNMT1 may play an important role in multiple events that contribute to the aggressiveness of PCa tumors, with an emphasis on AA PCa patients.
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Affiliation(s)
- Shaniece C Theodore
- Department of Biology and Center for Cancer Research, Tuskegee University, Tuskegee, AL
| | | | | | | | | | | | | | | | | | | | | | - Clayton Yates
- Department of Biology and Center for Cancer Research, Tuskegee University, Tuskegee, AL
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Yousef GM. miRSNP-Based Approach Identifies a miRNA That Regulates Prostate-Specific Antigen in an Allele-Specific Manner. Cancer Discov 2015; 5:351-2. [DOI: 10.1158/2159-8290.cd-15-0230] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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12
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Ayub SG, Kaul D, Ayub T. Microdissecting the role of microRNAs in the pathogenesis of prostate cancer. Cancer Genet 2015; 208:289-302. [PMID: 26004033 DOI: 10.1016/j.cancergen.2015.02.010] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2014] [Revised: 02/16/2015] [Accepted: 02/21/2015] [Indexed: 12/18/2022]
Abstract
MicroRNAs (miRNAs) are naturally occurring, small, non-coding RNA molecules that post-transcriptionally regulate the expression of a large number of genes involved in various biological processes, either through mRNA degradation or through translation inhibition. Since the discovery of miRNAs, a vast amount of research has implicated the deregulated expression of miRNAs in different malignancies, including prostate cancer (PCa). Different miRNA expression profiles are reportedly associated with the development, progression, and emergence of castration-resistant PCa (CRPC), suggesting their use in the diagnosis, prognosis, and development of anti-cancer treatment models directed against this disease. However, before their exploitation in terms of therapeutics, a thorough understanding and in-depth mechanistic studies of these miRNAs and the gene networks they orchestrate are necessary for ascertaining their definitive role in the development and progression of PCa. This review attempts to extensively summarize the current knowledge of aberrantly expressed miRNAs and their mode of action in PCa, while highlighting the existing discrepancies and future research warranted.
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Affiliation(s)
- Shiekh Gazalla Ayub
- Department of Experimental Medicine and Biotechnology, Post-Graduate Institute of Medical Sciences and Research, Chandigarh, India.
| | - Deepak Kaul
- Department of Experimental Medicine and Biotechnology, Post-Graduate Institute of Medical Sciences and Research, Chandigarh, India
| | - Taha Ayub
- Department of Social and Preventive Medicine, Government Medical College, Srinagar, Jammu and Kashmir, India
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Michaelidou K, Kladi-Skandali A, Scorilas A. Kallikreins as Biomarkers in Human Malignancies. BIOMARKERS IN CANCER 2015. [DOI: 10.1007/978-94-007-7681-4_18] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
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14
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Engineered microenvironments provide new insights into ovarian and prostate cancer progression and drug responses. Adv Drug Deliv Rev 2014; 79-80:193-213. [PMID: 24969478 DOI: 10.1016/j.addr.2014.06.001] [Citation(s) in RCA: 38] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2013] [Revised: 05/30/2014] [Accepted: 06/16/2014] [Indexed: 02/06/2023]
Abstract
Tissue engineering technologies, which have originally been designed to reconstitute damaged tissue structure and function, can mimic not only tissue regeneration processes but also cancer development and progression. Bioengineered approaches allow cell biologists to develop sophisticated experimentally and physiologically relevant cancer models to recapitulate the complexity of the disease seen in patients. Tissue engineering tools enable three-dimensionality based on the design of biomaterials and scaffolds that re-create the geometry, chemistry, function and signalling milieu of the native tumour microenvironment. Three-dimensional (3D) microenvironments, including cell-derived matrices, biomaterial-based cell culture models and integrated co-cultures with engineered stromal components, are powerful tools to study dynamic processes like proteolytic functions associated with cancer progression, metastasis and resistance to therapeutics. In this review, we discuss how biomimetic strategies can reproduce a humanised niche for human cancer cells, such as peritoneal or bone-like microenvironments, addressing specific aspects of ovarian and prostate cancer progression and therapy response.
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15
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Chu H, Zhong D, Tang J, Li J, Xue Y, Tong N, Qin C, Yin C, Zhang Z, Wang M. A functional variant in miR-143 promoter contributes to prostate cancer risk. Arch Toxicol 2014; 90:403-14. [PMID: 25354797 DOI: 10.1007/s00204-014-1396-2] [Citation(s) in RCA: 38] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2014] [Accepted: 10/16/2014] [Indexed: 11/28/2022]
Abstract
MicroRNAs are important regulators in numerous cellular processes, including cell differentiation, proliferation, and apoptosis. Recently, miR-143 was identified as a tumor suppressor in prostate cancer (PCa). To explore the mechanism of dysregulation and anti-tumor function of miR-143 in PCa, we first found a single-nucleotide polymorphism rs4705342T>C in the promoter region of miR-143 through bioinformatics tools and then performed a case-control study including 608 PCa patients and 709 controls. Results suggested that subjects with TC/CC genotypes had significantly decreased risk of PCa compared with those with TT genotype (adjusted OR 0.68, 95 % CI 0.55-0.85). Further functional assays showed that the risk-associated T allele increased the protein-binding affinity and reduced the activity of the promoter compared with C allele. In addition, restoration of miR-143 by mimics in PCa cells significantly inhibited cell proliferation and migration and down-regulated the expression level of kallikrein-related peptidase 2 (KLK2) mRNA and protein. The miR-143-KLK2 axis was also confirmed by luciferase reporter assay in vitro. In conclusion, our findings demonstrate that there is the significant association between the functional promoter variant rs4705342T>C in miR-143 and PCa risk and newly describe the miR-143-KLK2 interaction which provided another potential mechanism for miR-143 anti-tumor function.
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Affiliation(s)
- Haiyan Chu
- State Key Laboratory of Reproductive Medicine, Nanjing Medical University, 818 East Tianyuan Road, Nanjing, 211166, China.,Department of Environmental Genomics, Jiangsu Key Laboratory of Cancer Biomarkers, Prevention and Treatment, Cancer Center, Nanjing Medical University, Nanjing, China.,Department of Genetic Toxicology, The Key Laboratory of Modern Toxicology, Ministry of Education, School of Public Health, Nanjing Medical University, Nanjing, China
| | - Dongyan Zhong
- Department of Genetic Toxicology, The Key Laboratory of Modern Toxicology, Ministry of Education, School of Public Health, Nanjing Medical University, Nanjing, China.,Orthopaedic Institute, Soochow University, Suzhou, China
| | - Jialin Tang
- Department of Genetic Toxicology, The Key Laboratory of Modern Toxicology, Ministry of Education, School of Public Health, Nanjing Medical University, Nanjing, China.,Department of Public Health, Jiangxi Center for Disease Control and Prevention, 555 Beijing East Road, Nanchang, 330029, Jiangxi, China
| | - Jie Li
- Department of Urology, The First Affiliated Hospital of Nanjing Medical University, Nanjing, China
| | - Yao Xue
- Department of Environmental Genomics, Jiangsu Key Laboratory of Cancer Biomarkers, Prevention and Treatment, Cancer Center, Nanjing Medical University, Nanjing, China.,Department of Genetic Toxicology, The Key Laboratory of Modern Toxicology, Ministry of Education, School of Public Health, Nanjing Medical University, Nanjing, China
| | - Na Tong
- Department of Environmental Genomics, Jiangsu Key Laboratory of Cancer Biomarkers, Prevention and Treatment, Cancer Center, Nanjing Medical University, Nanjing, China.,Department of Genetic Toxicology, The Key Laboratory of Modern Toxicology, Ministry of Education, School of Public Health, Nanjing Medical University, Nanjing, China
| | - Chao Qin
- Department of Urology, The First Affiliated Hospital of Nanjing Medical University, Nanjing, China
| | - Changjun Yin
- Department of Urology, The First Affiliated Hospital of Nanjing Medical University, Nanjing, China
| | - Zhengdong Zhang
- State Key Laboratory of Reproductive Medicine, Nanjing Medical University, 818 East Tianyuan Road, Nanjing, 211166, China. .,Department of Environmental Genomics, Jiangsu Key Laboratory of Cancer Biomarkers, Prevention and Treatment, Cancer Center, Nanjing Medical University, Nanjing, China. .,Department of Genetic Toxicology, The Key Laboratory of Modern Toxicology, Ministry of Education, School of Public Health, Nanjing Medical University, Nanjing, China.
| | - Meilin Wang
- State Key Laboratory of Reproductive Medicine, Nanjing Medical University, 818 East Tianyuan Road, Nanjing, 211166, China. .,Department of Environmental Genomics, Jiangsu Key Laboratory of Cancer Biomarkers, Prevention and Treatment, Cancer Center, Nanjing Medical University, Nanjing, China. .,Department of Genetic Toxicology, The Key Laboratory of Modern Toxicology, Ministry of Education, School of Public Health, Nanjing Medical University, Nanjing, China.
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16
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Sidiropoulos KG, White NMA, Bui A, Ding Q, Boulos P, Pampalakis G, Khella H, Samuel JN, Sotiropoulou G, Yousef GM. Kallikrein-related peptidase 5 induces miRNA-mediated anti-oncogenic pathways in breast cancer. Oncoscience 2014; 1:709-24. [PMID: 25593998 PMCID: PMC4278268 DOI: 10.18632/oncoscience.91] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2014] [Accepted: 10/23/2014] [Indexed: 12/15/2022] Open
Abstract
Kallikrein-related peptidase 5 (KLK5) displays aberrant expression in cancer. Recently, we showed KLK5 reconstitution in breast cancer cell lines suppresses malignancy. Present study aims to investigate the functional KLK5 mediated miRNA network on breast cancer progression, molecular subtype and survival. 28 miRNAs were up-regulated and 62 miRNAs were down-regulated upon KLK5 expression. Extracellular matrix (ECM) molecules and cell-adhesion pathways were the most significant KLK5-induced miRNA-mediated regulatory targets. Validation from The Cancer Genome Atlas (TCGA) database indicated KLK5 was specifically down-regulated in luminal B and basal-like breast cancer subtypes. There was a correlation between KLK5, miRNAs and their downstream ECM gene targets. Long-term patient survival correlated with dysregulation of KLK5 and interacting ECM target genes. It suggests biological differences between breast cancer molecular subtypes, patient survival, and their propensity for invasion and metastasis can be explained in part by altered miRNA networks induced by KLK5 dysregulation. We provide the first evidence that KLK5 can affect miRNA networks, which regulate MMPs and other novel ECM targets and a new compelling hypothesis of interplay between serine proteases and miRNAs. We developed a combined KLK5-(ITGB1+COL12A1) predictive score for recurrence-free survival that could be exploited in clinical applications.
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Affiliation(s)
- Konstantinos G Sidiropoulos
- The Keenan Research Center for Biomedical Sciences at the Li Ka Shing Knowledge Institute and Department of Laboratory Medicine, St. Michael's Hospital, Toronto, Canada ; Department of Laboratory Medicine and Pathobiology, University of Toronto, Toronto, Canada
| | - Nicole M A White
- The Keenan Research Center for Biomedical Sciences at the Li Ka Shing Knowledge Institute and Department of Laboratory Medicine, St. Michael's Hospital, Toronto, Canada ; Department of Laboratory Medicine and Pathobiology, University of Toronto, Toronto, Canada
| | - Anna Bui
- The Keenan Research Center for Biomedical Sciences at the Li Ka Shing Knowledge Institute and Department of Laboratory Medicine, St. Michael's Hospital, Toronto, Canada
| | - Qiang Ding
- The Keenan Research Center for Biomedical Sciences at the Li Ka Shing Knowledge Institute and Department of Laboratory Medicine, St. Michael's Hospital, Toronto, Canada
| | - Peter Boulos
- The Keenan Research Center for Biomedical Sciences at the Li Ka Shing Knowledge Institute and Department of Laboratory Medicine, St. Michael's Hospital, Toronto, Canada
| | - Georgios Pampalakis
- Department of Pharmacy, School of Health Sciences, University of Patras, Rion-Patras, Greece
| | - Heba Khella
- The Keenan Research Center for Biomedical Sciences at the Li Ka Shing Knowledge Institute and Department of Laboratory Medicine, St. Michael's Hospital, Toronto, Canada
| | - Joseph N Samuel
- The Keenan Research Center for Biomedical Sciences at the Li Ka Shing Knowledge Institute and Department of Laboratory Medicine, St. Michael's Hospital, Toronto, Canada
| | - Georgia Sotiropoulou
- Department of Pharmacy, School of Health Sciences, University of Patras, Rion-Patras, Greece
| | - George M Yousef
- The Keenan Research Center for Biomedical Sciences at the Li Ka Shing Knowledge Institute and Department of Laboratory Medicine, St. Michael's Hospital, Toronto, Canada ; Department of Laboratory Medicine and Pathobiology, University of Toronto, Toronto, Canada
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17
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Scorilas A, Mavridis K. Predictions for the future of kallikrein-related peptidases in molecular diagnostics. Expert Rev Mol Diagn 2014; 14:713-22. [PMID: 24927162 DOI: 10.1586/14737159.2014.928207] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Abstract
Kallikrein-related peptidases (KLKs) form a cancer-related ensemble of serine proteases. This multigene family hosts the most widely used cancer biomarker that is PSA-KLK3, with millions of tests performed annually worldwide. The present report provides an overview of the biomarker potential of the extended KLK family (KLK1-KLK15) in various disease settings and envisages approaches that could lead to additional KLK-driven applications in future molecular diagnostics. Particular focus is given on the inclusion of KLKs into multifaceted cancer biomarker panels that provide enhanced diagnostic, prognostic and/or predictive accuracy in several human malignancies. Such panels have been described so far for prostate, ovarian, lung and colorectal cancers. The role of KLKs as biomarkers in non-malignant disease settings, such as Alzheimer's disease and multiple sclerosis, is also commented upon. Predictions are given on the challenges and future directions regarding clinically oriented KLK research.
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Affiliation(s)
- Andreas Scorilas
- Department of Biochemistry and Molecular Biology, University of Athens, Panepistimiopolis, Athens 157 01, Greece
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18
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Mavridis K, Avgeris M, Scorilas A. Targeting kallikrein-related peptidases in prostate cancer. Expert Opin Ther Targets 2014; 18:365-83. [DOI: 10.1517/14728222.2014.880693] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
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19
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miR-331-3p regulates expression of neuropilin-2 in glioblastoma. J Neurooncol 2013; 116:67-75. [PMID: 24142150 PMCID: PMC3889298 DOI: 10.1007/s11060-013-1271-7] [Citation(s) in RCA: 44] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2013] [Accepted: 10/09/2013] [Indexed: 01/06/2023]
Abstract
Aberrant expression of microRNAs (miRNAs), a class of small non-coding regulatory RNAs, has been implicated in the development and progression of high-grade gliomas. However, the precise mechanistic role of many miRNAs in this disease remains unclear. Here, we investigate the functional role of miR-331-3p in glioblastoma multiforme (GBM). We found that miR-331-3p expression in GBM cell lines is significantly lower than in normal brain, and that transient overexpression of miR-331-3p inhibits GBM cell line proliferation and clonogenic growth, suggesting a possible tumor suppressor role for miR-331-3p in this system. Bioinformatics analysis identified neuropilin-2 (NRP-2) as a putative target of miR-331-3p. Using transfection studies, we validated NRP-2 mRNA as a target of miR-331-3p in GBM cell lines, and show that NRP-2 expression is regulated by miR-331-3p. RNA interference (RNAi) to inhibit NRP-2 expression in vitro decreased the growth and clonogenic growth of GBM cell lines, providing further support for an oncogenic role for NRP-2 in high-grade gliomas. We also show that miR-331-3p inhibits GBM cell migration, an effect due in part to reduced NRP-2 expression. Finally, we identified a significant inverse correlation between miR-331-3p and NRP-2 expression in The Cancer Genome Atlas GBM cohort of 491 patients. Together, our results suggest that a loss of miR-331-3p expression contributes to GBM development and progression, at least in part via upregulating NRP-2 expression and increasing cell proliferation and clonogenic growth.
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20
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Emerging clinical importance of the cancer biomarkers kallikrein-related peptidases (KLK) in female and male reproductive organ malignancies. Radiol Oncol 2013; 47:319-29. [PMID: 24294176 PMCID: PMC3814276 DOI: 10.2478/raon-2013-0053] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2013] [Accepted: 07/25/2013] [Indexed: 01/01/2023] Open
Abstract
Background Tumor tissue-associated KLKs (kallikrein-related peptidases) are clinically important biomarkers that may allow prognosis of the cancer disease and/or prediction of response/failure of cancer patients to cancer-directed drugs. Regarding the female/male reproductive tract, remarkably, all of the fifteen KLKs are expressed in the normal prostate, breast, cervix uteri, and the testis, whereas the uterus/endometrium and the ovary are expressing a limited number of KLKs only. Conclusions Most of the information regarding elevated expression of KLKs in tumor-affected organs is available for ovarian cancer; depicting them as valuable biomarkers in the cancerous phenotype. In contrast, for breast cancer, a series of KLKs was found to be downregulated. However, in breast cancer, KLK4 is elevated which is also true for ovarian and prostate cancer. In such cases, selective synthetic KLK inhibitors that aim at blocking the proteolytic activities of certain KLKs may serve as future candidate therapeutic drugs to interfere with tumor progression and metastasis.
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21
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Roles of microRNAs during prostatic tumorigenesis and tumor progression. Oncogene 2013; 33:135-47. [PMID: 23455326 DOI: 10.1038/onc.2013.54] [Citation(s) in RCA: 97] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2012] [Revised: 01/07/2013] [Accepted: 01/08/2013] [Indexed: 02/07/2023]
Abstract
Prostate cancer (PCa) is considered to be a frequently diagnosed cancer in males with high mortality worldwide, but the molecular mechanism responsible for prostate tumorigenesis and progression remains unclear. Increasing evidence has shown that microRNAs (miRNAs) play an important role in PCa. In this review, we focus on the current advances about the role of miRNAs in regulating tumorigenesis and progression of PCa, mainly in suppressing or promoting PCa growth and metastasis, and maintaining the pluripotency of PCa stem cells (PCSC). More studies on miRNAs will provide a better understanding of their regulatory mechanisms in PCa.
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22
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Li S, Li Y, Hu R, Li W, Qiu H, Cai H, Wang S. The mTOR inhibitor AZD8055 inhibits proliferation and glycolysis in cervical cancer cells. Oncol Lett 2012; 5:717-721. [PMID: 23420667 PMCID: PMC3573114 DOI: 10.3892/ol.2012.1058] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2012] [Accepted: 11/20/2012] [Indexed: 12/01/2022] Open
Abstract
The aim of the present study was to determine the effect of AZD8055 on proliferation, apoptosis and glycolysis in the human cervical cancer cell line HeLa and to investigate the underlying mechanism(s) of action. HeLa human cervical cancer cells were treated with 10 nM AZD8055 for 24, 48 or 72 h. MTT was used to determine cell proliferation. Annexin V/propidium iodide staining was used to determine cell apoptosis analyzed by fluorescence-activated cell sorting (FACS). Glycolytic activity was determined by measuring the activity of the key enzyme lactate dehydrogenase (LDH) and lactate production. RNA and protein expression were examined by qRT-PCR and western blotting, respectively. Treatment with AZD8055 inhibited proliferation and glycolysis, and induced apoptosis in HeLa cells in a time-dependent manner. During the prolonged treatment with AZD8055, the phosphorylation of mammalian target of rapamycin (mTOR) C1 substrates p70S6K and phosphorylation of the mTORC2 substrate Akt were deregulated, suggesting that the activity of mTOR was downregulated. Furthermore, our study showed that the expression of miR-143 was upregulated in a time-dependent manner in HeLa cells treated with AZD8055. In summary, the present study reveals a novel antitumor mechanism of AZD8055 in HeLa human cervical cancer cells.
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Affiliation(s)
- Shaoru Li
- Departments of Gynecology and Obstetrics, The First Affiliated Hospital of Xinxiang Medical University, Weihui, Henan 453100
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23
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Liu L, Gong L, Zhang Y, Li N. Glycolysis in Panc-1 human pancreatic cancer cells is inhibited by everolimus. Exp Ther Med 2012; 5:338-342. [PMID: 23251295 PMCID: PMC3523959 DOI: 10.3892/etm.2012.787] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2012] [Accepted: 10/22/2012] [Indexed: 02/07/2023] Open
Abstract
The aim of this study was to evaluate the effects and molecular mechanisms of everolimus on Panc-1 human pancreatic cancer cells. Panc-1 human pancreatic cancer cells were treated with everolimus (10 μg/ml) at selected time points (6, 12 and 24 h). Cell proliferation and apoptosis were evaluated by MTT and flow cytometric analyses. The glycolytic activity was determined by measuring the activity of the key enzyme lactate dehydrogenase (LDH) and lactate production. The activity of mammalian target of rapamycin (mTOR) signaling was measured by western blotting. The expression of genes, including hexokinase 2 (HK2) and microRNA-143 (miR-143), was evaluated by real-time polymerase chain reaction (PCR). The administration of everolimus time-dependently inhibited proliferation and glycolysis and induced apoptosis in the Panc-1 human pancreatic cancer cells. As the time of treatment with everolimus increased, the mTOR signaling activity decreased, indicated by lower phosphorylation levels of S6 kinase; however, the phosphorylation levels of mTOR barely changed. Moreover, our data showed an everolimus-induced increase in miR-143 and decrease in HK2 in Panc-1 cells in a time-dependent manner. In conclusion, the current study indicates a novel role of everolimus in its antitumor effect as an inhibitor of glycolysis in Panc-1 human pancreatic cancer cells. Furthermore, our data highlights the significance of exploring the mechanisms of everolimus and miR-143 in malignant tumors.
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Affiliation(s)
- Ling Liu
- National Hepatobiliary and Enteric Surgery Research Center, Xiangya Hospital, Central South University, Changsha, Hunan 410008, P.R. China
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24
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Epis MR, Giles KM, Kalinowski FC, Barker A, Cohen RJ, Leedman PJ. Regulation of expression of deoxyhypusine hydroxylase (DOHH), the enzyme that catalyzes the activation of eIF5A, by miR-331-3p and miR-642-5p in prostate cancer cells. J Biol Chem 2012; 287:35251-35259. [PMID: 22908221 PMCID: PMC3471734 DOI: 10.1074/jbc.m112.374686] [Citation(s) in RCA: 40] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2012] [Revised: 08/16/2012] [Indexed: 01/30/2023] Open
Abstract
The enzyme deoxyhypusine hydroxylase (DOHH) catalyzes the activation of eukaryotic translation initiation factor (eIF5A), a protein essential for cell growth. Using bioinformatic predictions and reporter gene assays, we have identified a 182-nt element within the DOHH 3'-untranslated region (3'-UTR) that contains a number of target sites for miR-331-3p and miR-642-5p. Quantitative RT-PCR studies demonstrated overexpression of DOHH mRNA and underexpression of miR-331-3p and miR-642-5p in several prostate cancer cell lines compared with normal prostate epithelial cells. Transient overexpression of miR-331-3p and/or miR-642-5p in DU145 prostate cancer cells reduced DOHH mRNA and protein expression and inhibited cell proliferation. We observed synergistic growth inhibition with the combination of miR-331-3p and miR-642-5p and mimosine, a pharmacological DOHH inhibitor. Finally, we identified a significant inverse relationship between the expression of miR-331-3p or miR-642-5p and DOHH in a cohort of human prostate cancer tissues. Our results suggest a novel role for miR-331-3p and miR-642-5p in the control of prostate cancer cell growth via the regulation of DOHH expression and eIF5A activity.
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Affiliation(s)
- Michael R Epis
- Laboratory for Cancer Medicine, Western Australian Institute for Medical Research and University of Western Australia Centre for Medical Research, Royal Perth Hospital, Perth, Western Australia 6000, Australia
| | - Keith M Giles
- Laboratory for Cancer Medicine, Western Australian Institute for Medical Research and University of Western Australia Centre for Medical Research, Royal Perth Hospital, Perth, Western Australia 6000, Australia
| | - Felicity C Kalinowski
- Laboratory for Cancer Medicine, Western Australian Institute for Medical Research and University of Western Australia Centre for Medical Research, Royal Perth Hospital, Perth, Western Australia 6000, Australia
| | - Andrew Barker
- Laboratory for Cancer Medicine, Western Australian Institute for Medical Research and University of Western Australia Centre for Medical Research, Royal Perth Hospital, Perth, Western Australia 6000, Australia
| | - Ronald J Cohen
- Uropath Pty, Ltd., West Leederville, Western Australia 6007, Australia; School of Pathology and Laboratory Medicine, University of Western Australia, Nedlands, Western Australia 6009, Australia
| | - Peter J Leedman
- Laboratory for Cancer Medicine, Western Australian Institute for Medical Research and University of Western Australia Centre for Medical Research, Royal Perth Hospital, Perth, Western Australia 6000, Australia; School of Medicine and Pharmacology, The University of Western Australia, Nedlands, Western Australia 6009, Australia.
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