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Schmithals C, Kakoschky B, Denk D, von Harten M, Klug JH, Hintermann E, Dropmann A, Hamza E, Jacomin AC, Marquardt JU, Zeuzem S, Schirmacher P, Herrmann E, Christen U, Vogl TJ, Waidmann O, Dooley S, Finkelmeier F, Piiper A. Tumour-specific activation of a tumour-blood transport improves the diagnostic accuracy of blood tumour markers in mice. EBioMedicine 2024; 105:105178. [PMID: 38889481 PMCID: PMC11237870 DOI: 10.1016/j.ebiom.2024.105178] [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: 09/14/2023] [Revised: 04/12/2024] [Accepted: 05/17/2024] [Indexed: 06/20/2024] Open
Abstract
BACKGROUND The accuracy of blood-based early tumour recognition is compromised by signal production at non-tumoral sites, low amount of signal produced by small tumours, and variable tumour production. Here we examined whether tumour-specific enhancement of vascular permeability by the particular tumour homing peptide, iRGD, which carries dual function of binding to integrin receptors overexpressed in the tumour vasculature and is known to promote extravasation via neuropilin-1 receptor upon site-specific cleavage, might be useful to improve blood-based tumour detection by inducing a yet unrecognised vice versa tumour-to-blood transport. METHODS To detect an iRGD-induced tumour-to-blood transport, we examined the effect of intravenously injected iRGD on blood levels of α-fetoprotein (AFP) and autotaxin in several mouse models of hepatocellular carcinoma (HCC) or in mice with chronic liver injury without HCC, and on prostate-specific antigen (PSA) levels in mice with prostate cancer. FINDINGS Intravenously injected iRGD rapidly and robustly elevated the blood levels of AFP in several mouse models of HCC, but not in mice with chronic liver injury. The effect was primarily seen in mice with small tumours and normal basal blood AFP levels, was attenuated by an anti-neuropilin-1 antibody, and depended on the concentration gradient between tumour and blood. iRGD treatment was also able to increase blood levels of autotaxin in HCC mice, and of PSA in mice with prostate cancer. INTERPRETATION We conclude that iRGD induces a tumour-to-blood transport in a tumour-specific fashion that has potential of improving diagnosis of early stage cancer. FUNDING Deutsche Krebshilfe, DKTK, LOEWE-Frankfurt Cancer Institute.
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Affiliation(s)
- Christian Schmithals
- Goethe University Frankfurt, University Hospital, Medical Clinic 1, Frankfurt am Main, Germany
| | - Bianca Kakoschky
- Goethe University Frankfurt, University Hospital, Medical Clinic 1, Frankfurt am Main, Germany
| | - Dominic Denk
- Goethe University Frankfurt, University Hospital, Medical Clinic 1, Frankfurt am Main, Germany; Frankfurt Cancer Institute, Goethe University Frankfurt, University Hospital, Frankfurt am Main, Germany
| | - Maike von Harten
- Goethe University Frankfurt, University Hospital, Medical Clinic 1, Frankfurt am Main, Germany
| | - Jan Henrik Klug
- Goethe University Frankfurt, University Hospital, Medical Clinic 1, Frankfurt am Main, Germany
| | - Edith Hintermann
- Pharmazentrum Frankfurt / ZAFES, Goethe University Frankfurt, University Hospital, Frankfurt am Main, Germany
| | - Anne Dropmann
- Molecular Hepatology-Alcohol Associated Diseases, Department of Medicine II, Medical Faculty Mannheim, University of Heidelberg, Germany
| | - Eman Hamza
- Goethe University Frankfurt, University Hospital, Medical Clinic 1, Frankfurt am Main, Germany; Suez University, Faculty of Science, Zoology Department, Suez, Egypt
| | - Anne Claire Jacomin
- Frankfurt Cancer Institute, Goethe University Frankfurt, University Hospital, Frankfurt am Main, Germany; Institute of Biochemistry II, Faculty of Medicine, Goethe University, Frankfurt am Main, Germany
| | - Jens U Marquardt
- Department of Medicine I, University Medical Centre Schleswig-Holstein - Campus Lübeck, Lübeck, Germany
| | - Stefan Zeuzem
- Goethe University Frankfurt, University Hospital, Medical Clinic 1, Frankfurt am Main, Germany; German Cancer Consortium (DKTK), Partner Site Frankfurt/M., a Partnership Between DKFZ and University Hospital Frankfurt/M., Germany
| | | | - Eva Herrmann
- Goethe University Frankfurt, University Hospital, Institute of Biostatistics and Mathematical Modelling, Germany
| | - Urs Christen
- Pharmazentrum Frankfurt / ZAFES, Goethe University Frankfurt, University Hospital, Frankfurt am Main, Germany
| | - Thomas J Vogl
- Goethe University Frankfurt, University Hospital, Institute for Diagnostic and Interventional Radiology, Germany
| | - Oliver Waidmann
- Goethe University Frankfurt, University Hospital, Medical Clinic 1, Frankfurt am Main, Germany; Centrum für Hämatologie und Onkologie Bethanien, Frankfurt/Main, Germany
| | - Steven Dooley
- Molecular Hepatology-Alcohol Associated Diseases, Department of Medicine II, Medical Faculty Mannheim, University of Heidelberg, Germany
| | - Fabian Finkelmeier
- Goethe University Frankfurt, University Hospital, Medical Clinic 1, Frankfurt am Main, Germany; Frankfurt Cancer Institute, Goethe University Frankfurt, University Hospital, Frankfurt am Main, Germany
| | - Albrecht Piiper
- Goethe University Frankfurt, University Hospital, Medical Clinic 1, Frankfurt am Main, Germany; Frankfurt Cancer Institute, Goethe University Frankfurt, University Hospital, Frankfurt am Main, Germany; German Cancer Consortium (DKTK), Partner Site Frankfurt/M., a Partnership Between DKFZ and University Hospital Frankfurt/M., Germany.
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2
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Li P, Li Y, Ma X, Li L, Zeng S, Peng Y, Liang H, Zhang G. Identification of naphthalimide-derivatives as novel PBD-targeted polo-like kinase 1 inhibitors with efficacy in drug-resistant lung cancer cells. Eur J Med Chem 2024; 271:116416. [PMID: 38657480 DOI: 10.1016/j.ejmech.2024.116416] [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: 02/01/2024] [Revised: 04/11/2024] [Accepted: 04/11/2024] [Indexed: 04/26/2024]
Abstract
Targeting polo-box domain (PBD) small molecule for polo-like kinase 1 (PLK1) inhibition is a viable alternative to target kinase domain (KD), which could avoid pan-selectivity and dose-limiting toxicity of ATP-competitive inhibitors. However, their efficacy in these settings is still low and inaccessible to clinical requirement. Herein, we utilized a structure-based high-throughput virtual screen to find novel chemical scaffold capable of inhibiting PLK1 via targeting PBD and identified an initial hit molecule compound 1a. Based on the lead compound 1a, a structural optimization approach was carried out and several series of derivatives with naphthalimide structural motif were synthesized. Compound 4Bb was identified as a new potent PLK1 inhibitor with a KD value of 0.29 μM. 4Bb could target PLK1 PBD to inhibit PLK1 activity and subsequently suppress the interaction of PLK1 with protein regulator of cytokinesis 1 (PRC1), finally leading to mitotic catastrophe in drug-resistant lung cancer cells. Furthermore, 4Bb could undergo nucleophilic substitution with the thiol group of glutathione (GSH) to disturb the redox homeostasis through exhausting GSH. By regulating cell cycle machinery and increasing cellular oxidative stress, 4Bb exhibited potent cytotoxicity to multiple cancer cells and drug-resistant cancer cells. Subcutaneous and oral administration of 4Bb could effectively inhibit the growth of drug-resistant tumors in vivo, doubling the survival time of tumor bearing mice without side effects in normal tissues. Thus, our study offers an orally-available, structurally-novel PLK1 inhibitor for drug-resistant lung cancer therapy.
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Affiliation(s)
- Pingping Li
- State Key Laboratory for Chemistry and Molecular Engineering of Medicinal Resources/Key Laboratory for Chemistry and Molecular Engineering of Medicinal Resources (Ministry of Education of China), Collaborative Innovation Center for Guangxi Ethnic Medicine, School of Chemistry and Pharmaceutical Sciences, Guangxi Normal University, Guilin, 541004, China
| | - Yongkun Li
- State Key Laboratory for Chemistry and Molecular Engineering of Medicinal Resources/Key Laboratory for Chemistry and Molecular Engineering of Medicinal Resources (Ministry of Education of China), Collaborative Innovation Center for Guangxi Ethnic Medicine, School of Chemistry and Pharmaceutical Sciences, Guangxi Normal University, Guilin, 541004, China
| | - Xuesong Ma
- State Key Laboratory for Chemistry and Molecular Engineering of Medicinal Resources/Key Laboratory for Chemistry and Molecular Engineering of Medicinal Resources (Ministry of Education of China), Collaborative Innovation Center for Guangxi Ethnic Medicine, School of Chemistry and Pharmaceutical Sciences, Guangxi Normal University, Guilin, 541004, China
| | - Liangping Li
- State Key Laboratory for Chemistry and Molecular Engineering of Medicinal Resources/Key Laboratory for Chemistry and Molecular Engineering of Medicinal Resources (Ministry of Education of China), Collaborative Innovation Center for Guangxi Ethnic Medicine, School of Chemistry and Pharmaceutical Sciences, Guangxi Normal University, Guilin, 541004, China
| | - Shulan Zeng
- State Key Laboratory for Chemistry and Molecular Engineering of Medicinal Resources/Key Laboratory for Chemistry and Molecular Engineering of Medicinal Resources (Ministry of Education of China), Collaborative Innovation Center for Guangxi Ethnic Medicine, School of Chemistry and Pharmaceutical Sciences, Guangxi Normal University, Guilin, 541004, China
| | - Yan Peng
- State Key Laboratory for Chemistry and Molecular Engineering of Medicinal Resources/Key Laboratory for Chemistry and Molecular Engineering of Medicinal Resources (Ministry of Education of China), Collaborative Innovation Center for Guangxi Ethnic Medicine, School of Chemistry and Pharmaceutical Sciences, Guangxi Normal University, Guilin, 541004, China
| | - Hong Liang
- State Key Laboratory for Chemistry and Molecular Engineering of Medicinal Resources/Key Laboratory for Chemistry and Molecular Engineering of Medicinal Resources (Ministry of Education of China), Collaborative Innovation Center for Guangxi Ethnic Medicine, School of Chemistry and Pharmaceutical Sciences, Guangxi Normal University, Guilin, 541004, China.
| | - Guohai Zhang
- State Key Laboratory for Chemistry and Molecular Engineering of Medicinal Resources/Key Laboratory for Chemistry and Molecular Engineering of Medicinal Resources (Ministry of Education of China), Collaborative Innovation Center for Guangxi Ethnic Medicine, School of Chemistry and Pharmaceutical Sciences, Guangxi Normal University, Guilin, 541004, China.
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3
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Liu J, Huang J, Wang K, Li Y, Li C, Zhu Y, He X, Zhang Y, Zhao Y, Hu C, Xi Z, Tong M, Li Z, Gong P, Hou Y. Discovery and optimization of dihydropteridone derivatives as novel PLK1 and BRD4 dual inhibitor for the treatment of cancer. Bioorg Med Chem 2024; 101:117609. [PMID: 38364599 DOI: 10.1016/j.bmc.2024.117609] [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: 11/26/2023] [Revised: 01/16/2024] [Accepted: 01/16/2024] [Indexed: 02/18/2024]
Abstract
In this study, we have designed, synthesized and tested three series of novel dihydropteridone derivatives possessing isoindolin-1-one or isoindoline moieties as potent inhibitors of PLK1/BRD4. Remarkably, most of the compounds showed preferable inhibitory activity against PLK1 and BRD4. Compound SC10 exhibited excellent inhibitory activity with IC50 values of 0.3 nM and 60.8 nM against PLK1 and BRD4, respectively. Meanwhile, it demonstrated significant anti-proliferative activities against three tumor-derived cell lines (MDA-MB-231 IC50 = 17.3 nM, MDA-MB-361 IC50 = 8.4 nM, and MV4-11 IC50 = 5.4 nM). Moreover, SC10 exhibited moderate rat liver microsomal stability (CLint = 21.3 µL·min-1·mg-1), acceptable pharmacokinetic profile (AUC0-t = 657 ng·h·mL-1, oral bioavailability of 21.4 %) in Sprague-Dawley rats, reduced hERG toxicity, acceptable PPB and CYP450 inhibition. Further research indicated that SC10 could induce MV4-11 cell arrest at the S phase and apoptosis in a dose-dependent manner. This investigation provided us with an initial point for developing novel anticancer agents as dual inhibitors of PLK1 and BRD4.
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Affiliation(s)
- Jiuyu Liu
- School of Pharmaceutical Engineering, Shenyang Pharmaceutical University, 103 Wenhua Road, Shenhe District, Shenyang, Liaoning 110016, China
| | - Jingxuan Huang
- School of Pharmaceutical Engineering, Shenyang Pharmaceutical University, 103 Wenhua Road, Shenhe District, Shenyang, Liaoning 110016, China
| | - Kang Wang
- School of Pharmaceutical Engineering, Shenyang Pharmaceutical University, 103 Wenhua Road, Shenhe District, Shenyang, Liaoning 110016, China
| | - Yuan Li
- School of Pharmaceutical Engineering, Shenyang Pharmaceutical University, 103 Wenhua Road, Shenhe District, Shenyang, Liaoning 110016, China
| | - Chunting Li
- School of Pharmaceutical Engineering, Shenyang Pharmaceutical University, 103 Wenhua Road, Shenhe District, Shenyang, Liaoning 110016, China
| | - Yanli Zhu
- School of Pharmaceutical Engineering, Shenyang Pharmaceutical University, 103 Wenhua Road, Shenhe District, Shenyang, Liaoning 110016, China
| | - Xinzi He
- School of Pharmaceutical Engineering, Shenyang Pharmaceutical University, 103 Wenhua Road, Shenhe District, Shenyang, Liaoning 110016, China
| | - Yating Zhang
- School of Pharmaceutical Engineering, Shenyang Pharmaceutical University, 103 Wenhua Road, Shenhe District, Shenyang, Liaoning 110016, China
| | - Yanfang Zhao
- School of Pharmaceutical Engineering, Shenyang Pharmaceutical University, 103 Wenhua Road, Shenhe District, Shenyang, Liaoning 110016, China
| | - Changliang Hu
- 3D BioOptima, 1338 Wuzhong Avenue, Suzhou 215104, China
| | - Zhiguo Xi
- 3D BioOptima, 1338 Wuzhong Avenue, Suzhou 215104, China
| | - Minghui Tong
- 3D BioOptima, 1338 Wuzhong Avenue, Suzhou 215104, China
| | - Zhiwei Li
- School of Medicine and Health, Yancheng Polytechnic College, 285 Jiefang South Road, Yancheng, Jiangsu 224005, China
| | - Ping Gong
- School of Pharmaceutical Engineering, Shenyang Pharmaceutical University, 103 Wenhua Road, Shenhe District, Shenyang, Liaoning 110016, China.
| | - Yunlei Hou
- School of Pharmaceutical Engineering, Shenyang Pharmaceutical University, 103 Wenhua Road, Shenhe District, Shenyang, Liaoning 110016, China.
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Jin H, Kim J, Lee O, Kim H, No KT. Leveraging the Fragment Molecular Orbital Method to Explore the PLK1 Kinase Binding Site and Polo-Box Domain for Potent Small-Molecule Drug Design. Int J Mol Sci 2023; 24:15639. [PMID: 37958623 PMCID: PMC10650754 DOI: 10.3390/ijms242115639] [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: 09/15/2023] [Revised: 10/19/2023] [Accepted: 10/25/2023] [Indexed: 11/15/2023] Open
Abstract
Polo-like kinase 1 (PLK1) plays a pivotal role in cell division regulation and emerges as a promising therapeutic target for cancer treatment. Consequently, the development of small-molecule inhibitors targeting PLK1 has become a focal point in contemporary research. The adenosine triphosphate (ATP)-binding site and the polo-box domain in PLK1 present crucial interaction sites for these inhibitors, aiming to disrupt the protein's function. However, designing potent and selective small-molecule inhibitors can be challenging, requiring a deep understanding of protein-ligand interaction mechanisms at these binding sites. In this context, our study leverages the fragment molecular orbital (FMO) method to explore these site-specific interactions in depth. Using the FMO approach, we used the FMO method to elucidate the molecular mechanisms of small-molecule drugs binding to these sites to design PLK1 inhibitors that are both potent and selective. Our investigation further entailed a comparative analysis of various PLK1 inhibitors, each characterized by distinct structural attributes, helping us gain a better understanding of the relationship between molecular structure and biological activity. The FMO method was particularly effective in identifying key binding features and predicting binding modes for small-molecule ligands. Our research also highlighted specific "hot spot" residues that played a critical role in the selective and robust binding of PLK1. These findings provide valuable insights that can be used to design new and effective PLK1 inhibitors, which can have significant implications for developing anticancer therapeutics.
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Affiliation(s)
- Haiyan Jin
- The Interdisciplinary Graduate Program in Integrative Biotechnology & Translational Medicine, Yonsei University, Incheon 21983, Republic of Korea; (H.J.); (O.L.)
| | - Jongwan Kim
- Department of Biotechnology, Yonsei University, Seoul 03722, Republic of Korea
- Bioinformatics and Molecular Design Research Center (BMDRC), Incheon 21983, Republic of Korea;
| | - Onju Lee
- The Interdisciplinary Graduate Program in Integrative Biotechnology & Translational Medicine, Yonsei University, Incheon 21983, Republic of Korea; (H.J.); (O.L.)
| | - Hyein Kim
- Bioinformatics and Molecular Design Research Center (BMDRC), Incheon 21983, Republic of Korea;
| | - Kyoung Tai No
- The Interdisciplinary Graduate Program in Integrative Biotechnology & Translational Medicine, Yonsei University, Incheon 21983, Republic of Korea; (H.J.); (O.L.)
- Department of Biotechnology, Yonsei University, Seoul 03722, Republic of Korea
- Bioinformatics and Molecular Design Research Center (BMDRC), Incheon 21983, Republic of Korea;
- Baobab AiBIO Co., Ltd., Incheon 21983, Republic of Korea
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5
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Assessment of the Pharmacokinetics, Disposition, and Duration of Action of the Tumour-Targeting Peptide CEND-1. Int J Mol Sci 2023; 24:ijms24065700. [PMID: 36982773 PMCID: PMC10053770 DOI: 10.3390/ijms24065700] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2023] [Revised: 03/13/2023] [Accepted: 03/15/2023] [Indexed: 03/19/2023] Open
Abstract
CEND-1 (iRGD) is a bifunctional cyclic peptide that can modulate the solid tumour microenvironment, enhancing the delivery and therapeutic index of co-administered anti-cancer agents. This study explored CEND-1’s pharmacokinetic (PK) properties pre-clinically and clinically, and assessed CEND-1 distribution, tumour selectivity and duration of action in pre-clinical tumour models. Its PK properties were assessed after intravenous infusion of CEND-1 at various doses in animals (mice, rats, dogs and monkeys) and patients with metastatic pancreatic cancer. To assess tissue disposition, [3H]-CEND-1 radioligand was administered intravenously to mice bearing orthotopic 4T1 mammary carcinoma, followed by tissue measurement using quantitative whole-body autoradiography or quantitative radioactivity analysis. The duration of the tumour-penetrating effect of CEND-1 was evaluated by assessing tumour accumulation of Evans blue and gadolinium-based contrast agents in hepatocellular carcinoma (HCC) mouse models. The plasma half-life was approximately 25 min in mice and 2 h in patients following intravenous administration of CEND-1. [3H]-CEND-1 localised to the tumour and several healthy tissues shortly after administration but was cleared from most healthy tissues by 3 h. Despite the rapid systemic clearance, tumours retained significant [3H]-CEND-1 several hours post-administration. In mice with HCC, the tumour penetration activity remained elevated for at least 24 h after the injection of a single dose of CEND-1. These results indicate a favourable in vivo PK profile of CEND-1 and a specific and sustained tumour homing and tumour penetrability. Taken together, these data suggest that even single injections of CEND-1 may elicit long-lasting tumour PK improvements for co-administered anti-cancer agents.
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6
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Design, synthesis, and biological evaluation of novel dihydropteridone derivatives possessing oxadiazoles moiety as potent inhibitors of PLK1. Eur J Med Chem 2023; 251:115242. [PMID: 36889251 DOI: 10.1016/j.ejmech.2023.115242] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/27/2022] [Revised: 02/17/2023] [Accepted: 02/26/2023] [Indexed: 03/06/2023]
Abstract
Polo like kinase 1 (PLK1) is a serine/threonine kinase that is widely distributed in eukaryotic cells and plays an important role in multiple phases of the cell cycle. Its importance in tumorigenesis has been increasingly recognized in recent years. Herein, we describe the optimization of a series of novel dihydropteridone derivatives (13a-13v and 21g-21l) possessing oxadiazoles moiety as potent inhibitors of PLK1. Compound 21g exhibited improved PLK1 inhibitory capability with an IC50 value of 0.45 nM and significant anti-proliferative activities against four tumor-derived cell lines (MCF-7 IC50 = 8.64 nM, HCT-116 IC50 = 26.0 nM, MDA-MB-231 IC50 = 14.8 nM and MV4-11 IC50 = 47.4 nM) with better pharmacokinetic characteristics than BI2536 in mice (AUC0-t = 11 227 ng h mL-1vs 556 ng h mL-1). Moreover, 21g exhibited moderate liver microsomal stability and excellent pharmacokinetic profile (AUC0-t = 11227 ng h mL-1, oral bioavailability of 77.4%) in Balb/c mice, acceptable PPB, improved PLK1 inhibitory selectivity, and no apparent toxicity was observed in the acute toxicity assay (20 mg/kg). Further investigation showed that 21 g could arrest HCT-116 cells in G2 phase and induce apoptosis in a dose-dependent manner. These results indicate that 21g is a promising PLK1 inhibitor.
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7
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Meumann N, Cabanes-Creus M, Ertelt M, Navarro RG, Lucifora J, Yuan Q, Nien-Huber K, Abdelrahman A, Vu XK, Zhang L, Franke AC, Schmithals C, Piiper A, Vogt A, Gonzalez-Carmona M, Frueh JT, Ullrich E, Meuleman P, Talbot SR, Odenthal M, Ott M, Seifried E, Schoeder CT, Schwäble J, Lisowski L, Büning H. Adeno-associated virus serotype 2 capsid variants for improved liver-directed gene therapy. Hepatology 2023; 77:802-815. [PMID: 35976053 PMCID: PMC9936986 DOI: 10.1002/hep.32733] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/09/2022] [Revised: 07/29/2022] [Accepted: 08/07/2022] [Indexed: 12/08/2022]
Abstract
BACKGROUND AND AIMS Current liver-directed gene therapies look for adeno-associated virus (AAV) vectors with improved efficacy. With this background, capsid engineering is explored. Whereas shuffled capsid library screenings have resulted in potent liver targeting variants with one first vector in human clinical trials, modifying natural serotypes by peptide insertion has so far been less successful. Here, we now report on two capsid variants, MLIV.K and MLIV.A, both derived from a high-throughput in vivo AAV peptide display selection screen in mice. APPROACH AND RESULTS The variants transduce primary murine and human hepatocytes at comparable efficiencies, a valuable feature in clinical development, and show significantly improved liver transduction efficacy, thereby allowing a dose reduction, and outperform parental AAV2 and AAV8 in targeting human hepatocytes in humanized mice. The natural heparan sulfate proteoglycan binding ability is markedly reduced, a feature that correlates with improved hepatocyte transduction. A further property that might contribute to the improved transduction efficacy is the lower capsid melting temperature. Peptide insertion also caused a moderate change in sensitivity to human sera containing anti-AAV2 neutralizing antibodies, revealing the impact of epitopes located at the basis of the AAV capsid protrusions. CONCLUSIONS In conclusion, MLIV.K and MLIV.A are AAV peptide display variants selected in immunocompetent mice with improved hepatocyte tropism and transduction efficiency. Because these features are maintained across species, MLIV variants provide remarkable potential for translation of therapeutic approaches from mice to men.
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Affiliation(s)
- Nadja Meumann
- Institute of Experimental Hematology , Hannover Medical School , Hannover , Germany.,Center for Molecular Medicine Cologne , University of Cologne , Cologne , Germany
| | - Marti Cabanes-Creus
- Translational Vectorology Research Unit , Children's Medical Research Institute , The University of Sydney , Sydney , New South Wales , Australia
| | - Moritz Ertelt
- Institute for Drug Discovery , University Leipzig Medical School , Leipzig , Germany.,Center for Scalable Data Analytics and Artificial Intelligence ScaDS.AI , Dresden/Leipzig , Germany
| | - Renina Gale Navarro
- Translational Vectorology Research Unit , Children's Medical Research Institute , The University of Sydney , Sydney , New South Wales , Australia
| | - Julie Lucifora
- Cancer Research Center of Lyon , Institut National de la Santé et la Recherche Médicale , Lyon , France
| | - Qinggong Yuan
- Department of Gastroenterology, Hepatology, and Endocrinology , Hannover Medical School , Hannover , Germany.,Twincore Centre for Experimental and Clinical Infection Research , Hannover , Germany
| | - Karin Nien-Huber
- Institute for Transfusion Medicine and Immunohematology , Goethe University Hospital Medical School , German Red Cross Blood Donor Service , Frankfurt , Germany
| | - Ahmed Abdelrahman
- Institute for Transfusion Medicine and Immunohematology , Goethe University Hospital Medical School , German Red Cross Blood Donor Service , Frankfurt , Germany
| | - Xuan-Khang Vu
- Institute of Experimental Hematology , Hannover Medical School , Hannover , Germany
| | - Liang Zhang
- Center for Molecular Medicine Cologne , University of Cologne , Cologne , Germany.,Institute of Pathology , University Hospital Cologne , Cologne , Germany
| | - Ann-Christin Franke
- Institute of Experimental Hematology , Hannover Medical School , Hannover , Germany
| | - Christian Schmithals
- Department of Internal Medicine I , University Hospital Frankfurt , Frankfurt , Germany
| | - Albrecht Piiper
- Department of Internal Medicine I , University Hospital Frankfurt , Frankfurt , Germany
| | - Annabelle Vogt
- Department of Internal Medicine I , University Hospital Bonn , Bonn , Germany
| | | | - Jochen T Frueh
- Experimental Immunology , Children's University Hospital , Goethe University Frankfurt , Frankfurt am Main , Germany
| | - Evelyn Ullrich
- Experimental Immunology , Children's University Hospital , Goethe University Frankfurt , Frankfurt am Main , Germany
| | - Philip Meuleman
- Laboratory of Liver Infectious Diseases , Faculty of Medicine and Health Sciences , Ghent University , Ghent , Belgium
| | - Steven R Talbot
- Institute for Laboratory Animal Science , Hannover Medical School , Hannover , Germany
| | - Margarete Odenthal
- Center for Molecular Medicine Cologne , University of Cologne , Cologne , Germany.,Institute of Pathology , University Hospital Cologne , Cologne , Germany
| | - Michael Ott
- Department of Gastroenterology, Hepatology, and Endocrinology , Hannover Medical School , Hannover , Germany.,Twincore Centre for Experimental and Clinical Infection Research , Hannover , Germany
| | - Erhard Seifried
- Institute for Transfusion Medicine and Immunohematology , Goethe University Hospital Medical School , German Red Cross Blood Donor Service , Frankfurt , Germany
| | - Clara T Schoeder
- Institute for Drug Discovery , University Leipzig Medical School , Leipzig , Germany
| | - Joachim Schwäble
- Institute for Transfusion Medicine and Immunohematology , Goethe University Hospital Medical School , German Red Cross Blood Donor Service , Frankfurt , Germany
| | - Leszek Lisowski
- Translational Vectorology Research Unit , Children's Medical Research Institute , The University of Sydney , Sydney , New South Wales , Australia.,Military Institute of Medicine , Laboratory of Molecular Oncology and Innovative Therapies , Warsaw , Poland
| | - Hildegard Büning
- Institute of Experimental Hematology , Hannover Medical School , Hannover , Germany.,Center for Molecular Medicine Cologne , University of Cologne , Cologne , Germany
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Resistance to BRAF Inhibitors: EZH2 and Its Downstream Targets as Potential Therapeutic Options in Melanoma. Int J Mol Sci 2023; 24:ijms24031963. [PMID: 36768289 PMCID: PMC9916477 DOI: 10.3390/ijms24031963] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2022] [Revised: 01/10/2023] [Accepted: 01/16/2023] [Indexed: 01/20/2023] Open
Abstract
Activating BRAF mutations occurs in 50-60% of malignant melanomas. Although initially treatable, the development of resistance to BRAF-targeted therapies (BRAFi) is a major challenge and limits their efficacy. We have previously shown that the BRAFV600E signaling pathway mediates the expression of EZH2, an epigenetic regulator related to melanoma progression and worse overall survival. Therefore, we wondered whether inhibition of EZH2 would be a way to overcome resistance to vemurafenib. We found that the addition of an EZH2 inhibitor to vemurafenib improved the response of melanoma cells resistant to BRAFi with regard to decreased viability, cell-cycle arrest and increased apoptosis. By next-generation sequencing, we revealed that the combined inhibition of BRAF and EZH2 dramatically suppresses pathways of mitosis and cell cycle. This effect was linked to the downregulation of Polo-kinase 1 (PLK1), a key regulator of cell cycle and proliferation. Subsequently, when we inhibited PLK1, we found decreased cell viability of melanoma cells resistant to BRAFi. When we inhibited both BRAF and PLK1, we achieved an improved response of BRAFi-resistant melanoma cells, which was comparable to the combined inhibition of BRAF and EZH2. These results thus reveal that targeting EZH2 or its downstream targets, such as PLK1, in combination with BRAF inhibitors are potential novel therapeutic options in melanomas with BRAF mutations.
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Small Molecule Inhibitors for Hepatocellular Carcinoma: Advances and Challenges. Molecules 2022; 27:molecules27175537. [PMID: 36080304 PMCID: PMC9457820 DOI: 10.3390/molecules27175537] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2022] [Revised: 08/20/2022] [Accepted: 08/22/2022] [Indexed: 12/12/2022] Open
Abstract
According to data provided by World Health Organization, hepatocellular carcinoma (HCC) is the sixth most common cause of deaths due to cancer worldwide. Tremendous progress has been achieved over the last 10 years developing novel agents for HCC treatment, including small-molecule kinase inhibitors. Several small molecule inhibitors currently form the core of HCC treatment due to their versatility since they would be more easily absorbed and have higher oral bioavailability, thus easier to formulate and administer to patients. In addition, they can be altered structurally to have greater volumes of distribution, allowing them to block extravascular molecular targets and to accumulate in a high concentration in the tumor microenvironment. Moreover, they can be designed to have shortened half-lives to control for immune-related adverse events. Most importantly, they would spare patients, healthcare institutions, and society as a whole from the burden of high drug costs. The present review provides an overview of the pharmaceutical compounds that are licensed for HCC treatment and other emerging compounds that are still investigated in preclinical and clinical trials. These molecules are targeting different molecular targets and pathways that are proven to be involved in the pathogenesis of the disease.
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Zhang J, Zhang L, Wang J, Ouyang L, Wang Y. Polo-like Kinase 1 Inhibitors in Human Cancer Therapy: Development and Therapeutic Potential. J Med Chem 2022; 65:10133-10160. [PMID: 35878418 DOI: 10.1021/acs.jmedchem.2c00614] [Citation(s) in RCA: 38] [Impact Index Per Article: 19.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
Polo-like kinase 1 (PLK1) plays an important role in a variety of cellular functions, including the regulation of mitosis, DNA replication, autophagy, and the epithelial-mesenchymal transition (EMT). PLK1 overexpression is often associated with cell proliferation and poor prognosis in cancer patients, making it a promising antitumor target. To date, at least 10 PLK1 inhibitors (PLK1i) have been entered into clinical trials, among which the typical kinase domain (KD) inhibitor BI 6727 (volasertib) was granted "breakthrough therapy designation" by the FDA in 2013. Unfortunately, many other KD inhibitors showed poor specificity, resulting in dose-limiting toxicity, which has greatly impeded their development. Researchers recently discovered many PLK1i with higher selectivity, stronger potency, and better absorption, distribution, metabolism, and elimination (ADME) characteristics. In this review, we emphasize the structure-activity relationships (SARs) of PLK1i, providing insights into new drugs targeting PLK1 for antitumor clinical practice.
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Affiliation(s)
- Jifa Zhang
- Targeted Tracer Research and Development Laboratory, Institute of Respiratory Health, Frontiers Science Center for Disease-related Molecular Network, Joint Research Institution of Altitude Health, National Clinical Research Center for Geriatrics, West China Hospital, Sichuan University, Chengdu 610041, Sichuan, China.,State Key Laboratory of Biotherapy and Cancer Center, Department of Respiratory and Critical Care Medicine, West China Hospital, Sichuan University, Chengdu 610041, Sichuan, China
| | - Lele Zhang
- Targeted Tracer Research and Development Laboratory, Institute of Respiratory Health, Frontiers Science Center for Disease-related Molecular Network, Joint Research Institution of Altitude Health, National Clinical Research Center for Geriatrics, West China Hospital, Sichuan University, Chengdu 610041, Sichuan, China.,State Key Laboratory of Biotherapy and Cancer Center, Department of Respiratory and Critical Care Medicine, West China Hospital, Sichuan University, Chengdu 610041, Sichuan, China
| | - Jiaxing Wang
- Department of Pharmaceutical Sciences, College of Pharmacy, University of Tennessee Health Science Center, Memphis 38163, Tennessee, United States
| | - Liang Ouyang
- Targeted Tracer Research and Development Laboratory, Institute of Respiratory Health, Frontiers Science Center for Disease-related Molecular Network, Joint Research Institution of Altitude Health, National Clinical Research Center for Geriatrics, West China Hospital, Sichuan University, Chengdu 610041, Sichuan, China.,State Key Laboratory of Biotherapy and Cancer Center, Department of Respiratory and Critical Care Medicine, West China Hospital, Sichuan University, Chengdu 610041, Sichuan, China
| | - Yuxi Wang
- Targeted Tracer Research and Development Laboratory, Institute of Respiratory Health, Frontiers Science Center for Disease-related Molecular Network, Joint Research Institution of Altitude Health, National Clinical Research Center for Geriatrics, West China Hospital, Sichuan University, Chengdu 610041, Sichuan, China.,State Key Laboratory of Biotherapy and Cancer Center, Department of Respiratory and Critical Care Medicine, West China Hospital, Sichuan University, Chengdu 610041, Sichuan, China
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11
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Cheng M, Yang Q, Liu Y, Zhao MJ, Du X, Sun J, Shu WJ, Huang Z, Bi J, Xu X, Du HN. SETD3 Methyltransferase Regulates PLK1 Expression to Promote In Situ Hepatic Carcinogenesis. Front Oncol 2022; 12:882202. [PMID: 35912180 PMCID: PMC9329778 DOI: 10.3389/fonc.2022.882202] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2022] [Accepted: 06/13/2022] [Indexed: 11/13/2022] Open
Abstract
BackgroundThe development of a new strategy to overcome chemoresistance to hepatocellular carcinoma (HCC) treatment is a long-standing issue. We have previously found that upregulated SETD3 levels are closely correlated with HCC. This study aims to explore the mechanism underlying how upregulation of SETD3 promotes liver carcinogenesis.MethodsRNA-Sequencing analysis was used to explore the correlation of SETD3 with regulatory targets. In vitro assays including cell proliferation and migration were performed to study the oncogenic roles of SETD3 and PLK1. Western blotting, immunohistochemical staining, and blood biochemical assays were performed to examine protein expression or pathological index in tumor tissues and mice liver tissues. Luciferase reporter system and chromatin immunoprecipitation assays were used to explore the mechanism.ResultsWe revealed that SETD3 regulates gene expression in subgroups, including cell division, cell proliferation, and cell cycle, in hepatocellular tumor cells. We found that SETD3 upregulation is associated with elevated PLK1 level in both hepatic tumor cells and clinical liver tissues. We further showed that overexpression of SETD3 promoted tumor cell proliferation and migration, whereas inhibition of PLK1 activity attenuated these phenotypes caused by SETD3. By taking advantage of the Sleep Beauty transposase system, we confirmed that upregulated mouse Setd3 promoted hepatic carcinogenesis in situ, but knockdown of mouse Plk1 mitigated Setd3-promoted tumorigenesis in mice. Mechanistically, we showed that SETD3 could be recruited to the promoter of PLK1 gene to facilitate PLK1 transcription.ConclusionsOur data demonstrate that elevated SETD3 may promote HCC by enhancing PLK1 expression, which suggests that SETD3 may act as a potential drug target combined with PLK1 inhibition to treat HCC.
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Affiliation(s)
- Meng Cheng
- Hubei Key Laboratory of Cell Homeostasis, RNA Institute, College of Life Sciences, Renmin Hospital of Wuhan University, Wuhan University, Wuhan, China
| | - Qingmiao Yang
- Cardiovascular Center, Beijing Tongren Hospital, Capital Medical University, Beijing, China
| | - Yafei Liu
- Hubei Key Laboratory of Cell Homeostasis, RNA Institute, College of Life Sciences, Renmin Hospital of Wuhan University, Wuhan University, Wuhan, China
| | - Meng-Jie Zhao
- Hubei Key Laboratory of Cell Homeostasis, RNA Institute, College of Life Sciences, Renmin Hospital of Wuhan University, Wuhan University, Wuhan, China
| | - Xinyuan Du
- Hubei Key Laboratory of Cell Homeostasis, RNA Institute, College of Life Sciences, Renmin Hospital of Wuhan University, Wuhan University, Wuhan, China
| | - Jiaqi Sun
- Hubei Key Laboratory of Cell Homeostasis, RNA Institute, College of Life Sciences, Renmin Hospital of Wuhan University, Wuhan University, Wuhan, China
| | - Wen-Jie Shu
- Hubei Key Laboratory of Cell Homeostasis, RNA Institute, College of Life Sciences, Renmin Hospital of Wuhan University, Wuhan University, Wuhan, China
| | - Zan Huang
- Hubei Key Laboratory of Cell Homeostasis, RNA Institute, College of Life Sciences, Renmin Hospital of Wuhan University, Wuhan University, Wuhan, China
| | - Jianping Bi
- Department of Radiation Oncology, Hubei Cancer Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
- *Correspondence: Hai-Ning Du, ; Jianping Bi, ; Ximing Xu,
| | - Ximing Xu
- Department of Oncology, Renmin Hospital of Wuhan University, Wuhan, China
- *Correspondence: Hai-Ning Du, ; Jianping Bi, ; Ximing Xu,
| | - Hai-Ning Du
- Hubei Key Laboratory of Cell Homeostasis, RNA Institute, College of Life Sciences, Renmin Hospital of Wuhan University, Wuhan University, Wuhan, China
- *Correspondence: Hai-Ning Du, ; Jianping Bi, ; Ximing Xu,
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12
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Ma Z, Wong S, Forgham H, Esser L, Lai M, Leiske M, Kempe K, Sharbeen G, Youkhana J, Mansfeld F, Quinn J, Phillips P, Davis T, Kavallaris M, McCarroll J. Aerosol delivery of star polymer-siRNA nanoparticles as a therapeutic strategy to inhibit lung tumor growth. Biomaterials 2022; 285:121539. [DOI: 10.1016/j.biomaterials.2022.121539] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2021] [Revised: 04/19/2022] [Accepted: 04/20/2022] [Indexed: 01/12/2023]
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13
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Meumann N, Schmithals C, Elenschneider L, Hansen T, Balakrishnan A, Hu Q, Hook S, Schmitz J, Bräsen JH, Franke AC, Olarewaju O, Brandenberger C, Talbot SR, Fangmann J, Hacker UT, Odenthal M, Ott M, Piiper A, Büning H. Hepatocellular Carcinoma Is a Natural Target for Adeno-Associated Virus (AAV) 2 Vectors. Cancers (Basel) 2022; 14:cancers14020427. [PMID: 35053588 PMCID: PMC8774135 DOI: 10.3390/cancers14020427] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2021] [Revised: 12/21/2021] [Accepted: 01/11/2022] [Indexed: 02/04/2023] Open
Abstract
Simple Summary Gene therapy is a novel approach to treat diseases by introducing corrective genetic information into target cells. Adeno-associated virus vectors are the most frequently applied gene delivery tools for in vivo gene therapy and are also studied as part of innovative anticancer strategies. Here, we report on the natural preference of AAV2 vectors for hepatocellular carcinoma (HCC) compared to nonmalignant liver cells in mice and human tissue. This preference in transduction is due to the improved intracellular processing of AAV2 vectors in HCC, resulting in significantly more vector genomes serving as templates for transcription in the cell nucleus. Based on this natural tropism for HCC, novel therapeutic strategies can be designed or existing therapeutic approaches can be strengthened as they currently result in only a minor improvement of the poor prognosis for most liver cancer patients. Abstract Although therapeutic options are gradually improving, the overall prognosis for patients with hepatocellular carcinoma (HCC) is still poor. Gene therapy-based strategies are developed to complement the therapeutic armamentarium, both in early and late-stage disease. For efficient delivery of transgenes with antitumor activity, vectors demonstrating preferred tumor tropism are required. Here, we report on the natural tropism of adeno-associated virus (AAV) serotype 2 vectors for HCC. When applied intravenously in transgenic HCC mouse models, similar amounts of vectors were detected in the liver and liver tumor tissue. In contrast, transduction efficiency, as indicated by the level of transgene product, was moderate in the liver but was elevated up to 19-fold in mouse tumor tissue. Preferred transduction of HCC compared to hepatocytes was confirmed in precision-cut liver slices from human patient samples. Our mechanistic studies revealed that this preference is due to the improved intracellular processing of AAV2 vectors in HCC, resulting, for example, in nearly 4-fold more AAV vector episomes that serve as templates for gene transcription. Given this background, AAV2 vectors ought to be considered to strengthen current—or develop novel—strategies for treating HCC.
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Affiliation(s)
- Nadja Meumann
- Institute of Experimental Hematology, Hannover Medical School, 30625 Hannover, Germany; (N.M.); (A.-C.F.); (O.O.); (U.T.H.)
- REBIRTH Research Center for Translational Regenerative Medicine, Hannover Medical School, 30625 Hannover, Germany
- Center for Molecular Medicine Cologne, University of Cologne, 50931 Cologne, Germany;
| | - Christian Schmithals
- Department of Medicine 1, University Hospital, Goethe University Frankfurt, 60590 Frankfurt, Germany; (C.S.); (A.P.)
| | - Leroy Elenschneider
- Fraunhofer Institute for Toxicology and Experimental Medicine Preclinical Pharmacology and In-Vitro Toxicology, 30625 Hannover, Germany; (L.E.); (T.H.)
| | - Tanja Hansen
- Fraunhofer Institute for Toxicology and Experimental Medicine Preclinical Pharmacology and In-Vitro Toxicology, 30625 Hannover, Germany; (L.E.); (T.H.)
| | - Asha Balakrishnan
- Clinic for Gastroenterology, Hepatology and Endocrinology, Hannover Medical School, 30625 Hannover, Germany; (A.B.); (Q.H.); (S.H.); (M.O.)
- Twincore Centre for Experimental and Clinical Infection Research, 30625 Hannover, Germany
| | - Qingluan Hu
- Clinic for Gastroenterology, Hepatology and Endocrinology, Hannover Medical School, 30625 Hannover, Germany; (A.B.); (Q.H.); (S.H.); (M.O.)
- Twincore Centre for Experimental and Clinical Infection Research, 30625 Hannover, Germany
| | - Sebastian Hook
- Clinic for Gastroenterology, Hepatology and Endocrinology, Hannover Medical School, 30625 Hannover, Germany; (A.B.); (Q.H.); (S.H.); (M.O.)
- Twincore Centre for Experimental and Clinical Infection Research, 30625 Hannover, Germany
| | - Jessica Schmitz
- Nephropathology Unit, Institute of Pathology, Hannover Medical School, 30625 Hannover, Germany; (J.S.); (J.H.B.)
| | - Jan Hinrich Bräsen
- Nephropathology Unit, Institute of Pathology, Hannover Medical School, 30625 Hannover, Germany; (J.S.); (J.H.B.)
| | - Ann-Christin Franke
- Institute of Experimental Hematology, Hannover Medical School, 30625 Hannover, Germany; (N.M.); (A.-C.F.); (O.O.); (U.T.H.)
| | - Olaniyi Olarewaju
- Institute of Experimental Hematology, Hannover Medical School, 30625 Hannover, Germany; (N.M.); (A.-C.F.); (O.O.); (U.T.H.)
- REBIRTH Research Center for Translational Regenerative Medicine, Hannover Medical School, 30625 Hannover, Germany
| | - Christina Brandenberger
- Institute of Functional and Applied Anatomy, Hannover Medical School, 30625 Hannover, Germany;
- Biomedical Research in Endstage and Obstructive Lung Research (BREATH), German Center for Lung Research (DZL), 30625 Hannover, Germany
| | - Steven R. Talbot
- Institute for Laboratory Animal Science, Hannover Medical School, 30625 Hannover, Germany;
| | - Josef Fangmann
- KRH Klinikum Siloah, Liver Center Hannover (LCH), 30459 Hannover, Germany;
| | - Ulrich T. Hacker
- Institute of Experimental Hematology, Hannover Medical School, 30625 Hannover, Germany; (N.M.); (A.-C.F.); (O.O.); (U.T.H.)
- Department of Oncology, Gastroenterology, Hepatology, Pulmonology, and Infectious Diseases, University Cancer Center Leipzig (UCCL), Leipzig University Medical Center, 04103 Leipzig, Germany
| | - Margarete Odenthal
- Center for Molecular Medicine Cologne, University of Cologne, 50931 Cologne, Germany;
- Institute of Pathology, University Hospital Cologne, 50931 Cologne, Germany
| | - Michael Ott
- Clinic for Gastroenterology, Hepatology and Endocrinology, Hannover Medical School, 30625 Hannover, Germany; (A.B.); (Q.H.); (S.H.); (M.O.)
- Twincore Centre for Experimental and Clinical Infection Research, 30625 Hannover, Germany
| | - Albrecht Piiper
- Department of Medicine 1, University Hospital, Goethe University Frankfurt, 60590 Frankfurt, Germany; (C.S.); (A.P.)
- German Cancer Consortium (DKTK), German Cancer Research Center (DKFZ), 69120 Heidelberg, Germany
| | - Hildegard Büning
- Institute of Experimental Hematology, Hannover Medical School, 30625 Hannover, Germany; (N.M.); (A.-C.F.); (O.O.); (U.T.H.)
- REBIRTH Research Center for Translational Regenerative Medicine, Hannover Medical School, 30625 Hannover, Germany
- Center for Molecular Medicine Cologne, University of Cologne, 50931 Cologne, Germany;
- German Center for Infection Research (DZIF), Partner Site Hannover-Braunschweig, 38124 Braunschweig, Germany
- Correspondence: ; Tel.: +49-511-532-5106
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14
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Solanes-Casado S, Cebrián A, Rodríguez-Remírez M, Mahíllo I, García-García L, Río-Vilariño A, Baños N, de Cárcer G, Monfort-Vengut A, Castellano V, Fernández-Aceñero MJ, García-Foncillas J, Del Puerto-Nevado L. Overcoming PLK1 inhibitor resistance by targeting mevalonate pathway to impair AXL-TWIST axis in colorectal cancer. Biomed Pharmacother 2021; 144:112347. [PMID: 34700228 DOI: 10.1016/j.biopha.2021.112347] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2021] [Revised: 10/06/2021] [Accepted: 10/13/2021] [Indexed: 12/11/2022] Open
Abstract
New therapeutic targets are revolutionizing colorectal cancer clinical management, opening new horizons in metastatic patients' outcome. Polo Like Kinase1 (PLK1) inhibitors have high potential as antitumoral agents, however, the emergence of drug resistance is a major challenge for their use in clinical practice. Overcoming this challenge represents a hot topic in current drug discovery research. BI2536-resistant colorectal cancer cell lines HT29R, RKOR, SW837R and HCT116R, were generated in vitro and validated by IG50 assays and xenografts models by the T/C ratio. Exons 1 and 2 of PLK1 gene were sequenced by Sanger method. AXL pathway, Epithelial-to-Mesenchymal transition (EMT) and Multidrug Resistance (MDR1) were studied by qPCR and western blot in resistant cells. Simvastatin as a re-sensitizer drug was tested in vitro and the drug combination strategies were validated in vitro and in vivo. PLK1 gene mutation R136G was found for RKOR. AXL pathway trough TWIST1 transcription factor was identified as one of the mechanisms involved in HT29R, SW837R and HCT116R lines, inducing EMT and upregulation of MDR1. Simvastatin was able to impair the mechanisms activated by adaptive resistance and its combination with BI2536 re-sensitized resistant cells in vitro and in vivo. Targeting the mevalonate pathway contributes to re-sensitizing BI2536-resistant cells in vitro and in vivo, raising as a new strategy for the clinical management of PLK1 inhibitors.
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Affiliation(s)
- Sonia Solanes-Casado
- Translational Oncology Division, Oncohealth Institute, IIS - Fundación Jiménez Díaz University Hospital (IIS-FJD, UAM), Madrid, Spain
| | - Arancha Cebrián
- Translational Oncology Division, Oncohealth Institute, IIS - Fundación Jiménez Díaz University Hospital (IIS-FJD, UAM), Madrid, Spain.
| | | | - Ignacio Mahíllo
- Department of Statistics, IIS - Fundación Jiménez Díaz University Hospital (IIS-FJD, UAM), Madrid, Spain
| | - Laura García-García
- Translational Oncology Division, Oncohealth Institute, IIS - Fundación Jiménez Díaz University Hospital (IIS-FJD, UAM), Madrid, Spain
| | - Anxo Río-Vilariño
- Translational Oncology Division, Oncohealth Institute, IIS - Fundación Jiménez Díaz University Hospital (IIS-FJD, UAM), Madrid, Spain
| | - Natalia Baños
- Translational Oncology Division, Oncohealth Institute, IIS - Fundación Jiménez Díaz University Hospital (IIS-FJD, UAM), Madrid, Spain
| | - Guillermo de Cárcer
- Cell Cycle & Cancer Biomarkers Group, Instituto de Investigaciones Biomédicas "Alberto Sols" (IIBm) CSIC-UAM, 28029 Madrid, Spain
| | - Ana Monfort-Vengut
- Cell Cycle & Cancer Biomarkers Group, Instituto de Investigaciones Biomédicas "Alberto Sols" (IIBm) CSIC-UAM, 28029 Madrid, Spain
| | - Víctor Castellano
- Department of Pathology, Fundación Jiménez Díaz University Hospital (UAM), Madrid, Spain
| | - Maria Jesús Fernández-Aceñero
- Department of Pathology, Hospital Clínico San Carlos, Instituto de Investigación Sanitaria del Hospital Clínico San Carlos (IdISSC), Madrid, Spain
| | - Jesús García-Foncillas
- Translational Oncology Division, Oncohealth Institute, IIS - Fundación Jiménez Díaz University Hospital (IIS-FJD, UAM), Madrid, Spain.
| | - Laura Del Puerto-Nevado
- Translational Oncology Division, Oncohealth Institute, IIS - Fundación Jiménez Díaz University Hospital (IIS-FJD, UAM), Madrid, Spain.
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15
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α 3 integrin-binding peptide-functionalized polymersomes loaded with volasertib for dually-targeted molecular therapy for ovarian cancer. Acta Biomater 2021; 124:348-357. [PMID: 33561562 DOI: 10.1016/j.actbio.2021.02.007] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2020] [Revised: 01/19/2021] [Accepted: 02/02/2021] [Indexed: 12/14/2022]
Abstract
Ovarian cancer (OC) is a high-mortality malignancy in women with a five-year survival rate of 30-40%. There is an urgent need to develop high-efficacy and low toxic treatments for OC. Herein, we report an appealing strategy that combines α3 integrin targeted polymersomes (A3-Ps) and targeted molecular drug, polo-like kinase 1 (PLK1) inhibitor volasertib (Vol) for dually targeted molecular therapy of OC in vivo. A3-Ps had good Vol loading of 7.7-8.0 wt.% and small size of 25-32 nm, depending on the density of α3 integrin binding peptide A3. Interestingly, cellular uptake studies using FITC-labeled Vol revealed that A3-Ps with 20% peptide gave 2.3 and 3.3-fold better internalization in SKOV-3 OC cells compared with non-targeted Ps and free Vol, respectively. Accordingly, Vol loaded in A3-Ps showed the best inhibitory activity to SKOV-3 cells with an IC50 of 49 nM, which was 3.5 times lower than free Vol. Importantly, the in vivo experiments demonstrated that A3-Ps-Vol proficiently repressed the growth of SKOV-3 tumors in mice while continuous tumor growth was observed for Ps-Vol and free Vol-treated mice. A3-Ps-Vol besides boosting anti-OC activity also reduced the systemic toxicity of Vol. This dually targeted molecular drug nanoformulation has appeared to be an especially potent and low toxic treatment modality for human ovarian cancers. STATEMENT OF SIGNIFICANCE: Volasertib provides a potential molecular therapy for PLK1-positive advanced OC patients. The initial clinical outcomes, nevertheless, showed a suboptimal efficacy, possibly resulting from its fast clearance, deficient tumor deposition and dose-limiting toxicities. Here, we show for the first time that dually targeted molecular therapy of OC using α3 integrin-binding peptide-modified polymersomes as a vehicle gives markedly improved potency, better toleration, and depleted adverse effects in SKOV-3 tumor models, greatly outperforming free volasertib. This dually targeted strategy has emerged as an appealing treatment for malignant PLK1-positive ovarian tumors.
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16
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Deng J, Zhong F, Gu W, Qiu F. Exploration of Prognostic Biomarkers among Replication Factor C Family in the Hepatocellular Carcinoma. Evol Bioinform Online 2021; 17:1176934321994109. [PMID: 33628006 PMCID: PMC7885030 DOI: 10.1177/1176934321994109] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2020] [Accepted: 01/19/2021] [Indexed: 01/06/2023] Open
Abstract
Hepatocellular carcinoma (HCC) is one of the common cancers with a high incidence and mortality. The human replication factor C (RFC) family contains 5 subunits that play an important role in DNA replication and DNA damage repair. RFCs are abnormally expressed in a variety of cancers; some of them are differentially expressed in HCC tissues and related to tumor growth. However, the expression, prognostic value, and effect targets of the whole RFC family in HCC are still unclear. To address these issues, we performed a multidimensional analysis of RFCs in HCC patients by Oncomine, UALCAN, GEPIA, Human protein atlas, Kaplan-Meier plotter, cBioPortal, GeneMANIA, String, and LinkedOmics. mRNA expression of RFCs was significantly increased in HCC tissues. There was a significant correlation between the expression of RFC2/3/4/5 and tumor stage of HCC patients. Besides, high mRNA expression of RFC2/4 was associated with worse overall survival (OS). Moreover, genetic alterations of RFCs were associated with worse OS in HCC patients. We found that genes co-expressed with RFC2/4 were mainly involved in biological processes, such as chromosome segregation, mitotic cell cycle phase transition, and telomere organization and they activated the cell cycle and spliceosome pathways. The gene set is mainly enriched in cancer-related kinases AURKA, ATR, CDK1, PLK1, and CHEK1. E2F family members were the key transcription factors for RFCs. Our results suggest that differentially expressed RFC2 and RFC4 are potential prognostic biomarkers in HCC and may act on E2F transcription factors and some kinase targets to dysregulate the cell cycle pathway. These efforts may provide new research directions for prognostic biomarkers and therapeutic targets in HCC.
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Affiliation(s)
- Jianxiong Deng
- Department of Oncology, The First Affiliated Hospital of Nanchang University, Nanchang, Jiangxi, P.R. China
| | - Fangyan Zhong
- Department of Oncology, The First Affiliated Hospital of Nanchang University, Nanchang, Jiangxi, P.R. China
| | - Weiguo Gu
- Department of Pathology, The First Affiliated Hospital of Nanchang University, Nanchang, Jiangxi, P.R. China
| | - Feng Qiu
- Department of Oncology, The First Affiliated Hospital of Nanchang University, Nanchang, Jiangxi, P.R. China
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17
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Li B, Pu K, Wu X. Identifying novel biomarkers in hepatocellular carcinoma by weighted gene co-expression network analysis. J Cell Biochem 2019; 120:11418-11431. [PMID: 30746803 DOI: 10.1002/jcb.28420] [Citation(s) in RCA: 28] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2018] [Accepted: 12/04/2018] [Indexed: 01/24/2023]
Abstract
Hepatocellular carcinoma (HCC) is a highly malignant tumor found in the bile duct epithelial cells, and the second most common tumor of the liver. However, the pivotal roles of most molecules of tumorigenesis in HCC are still unclear. Hence, it is essential to detect the tumorigenic mechanism and develop novel prognostic biomarkers for clinical application. The data of HCC mRNA-seq and clinical information from The Cancer Genome Atlas (TCGA) database were analyzed by weighted gene co-expression network analysis (WGCNA). Co-expression modules and clinical traits were constructed by the Pearson correlation analysis, interesting modules were selected and gene ontology and pathway enrichment analysis were performed. Intramodule analysis and protein-protein interaction construction of selected modules were conducted to screen hub genes. In addition, upstream transcription factors and microRNAs of hub genes were predicted by miRecords and NetworkAnalyst database. Afterward, a high connectivity degree of hub genes from two networks was picked out to perform the differential expression validation in the Gene Expression Profiling Interactive Analysis database and Human Protein Atlas database and survival analysis in Kaplan-Meier plotter online tool. By utilizing WGCNA, several hub genes that regulate the mechanism of tumorigenesis in HCC were identified, which was associated with clinical traits including the pathological stage, histological grade, and liver function. Surprisingly, ZWINT, CENPA, RACGAP1, PLK1, NCAPG, OIP5, CDCA8, PRC1, and CDK1 were identified statistically as hub genes in the blue module, which were closely implicated in pathological T stage and histologic grade of HCC. Moreover, these genes also were strongly associated with the HCC cell growth and division. Network and survival analyses found that nine hub genes may be considered theoretically as indicators to predict the prognosis of patients with HCC or clinical treatment target, it will be necessary for basic experiments and large-scale cohort studies to validate further.
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Affiliation(s)
- Boxuan Li
- The First School of Clinical Medicine, Lanzhou University, Lanzhou, China.,Department of Pharmacy, The First Hospital of Lanzhou University, Lanzhou, China
| | - Ke Pu
- Department of Gastroenterology, The First Hospital of Lanzhou University, Lanzhou, China.,Key Laboratory for Gastrointestinal Diseases of Gansu Province, Lanzhou University, Lanzhou, China
| | - Xinan Wu
- The First School of Clinical Medicine, Lanzhou University, Lanzhou, China.,Department of Pharmacy, The First Hospital of Lanzhou University, Lanzhou, China
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Shakil S, Baig MH, Tabrez S, Rizvi SMD, Zaidi SK, Ashraf GM, Ansari SA, Khan AAP, Al-Qahtani MH, Abuzenadah AM, Chaudhary AG. Molecular and enzoinformatics perspectives of targeting Polo-like kinase 1 in cancer therapy. Semin Cancer Biol 2019; 56:47-55. [PMID: 29122685 DOI: 10.1016/j.semcancer.2017.11.004] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2017] [Revised: 10/22/2017] [Accepted: 11/04/2017] [Indexed: 12/25/2022]
Abstract
Cancer is a disease that has been the focus of scientific research and discovery and continues to remain so. Polo-like kinases (PLKs) are basically serine/threonine kinase enzymes that control cell cycle from yeast to humans. PLK-1 stands for 'Polo-like kinase-1'. It is the most investigated protein among PLKs. It is crucial for intracellular processes, hence a 'hot' anticancer drug-target. Accelerating innovations in Enzoinformatics and associated molecular visualization tools have made it possible to literally perform a 'molecular level walk' traversing through and observing the minutest contours of the active site of relevant enzymes. PLK-1 as a protein consists of a kinase domain at the protein N-terminal and a Polo Box Domain (PBD) at the C-terminal connected by a short inter-domain linking region. PBD has two Polo-Boxes. PBD of PLK-1 gives the impression of "a small clamp sandwiched between two clips", where the two Polo Boxes are the 'clips' and the 'phosphopeptide' is the small 'clamp'. Broadly, two major sites of PLK-1 can be potential targets: one is the adenosine-5'-triphosphate (ATP)-binding site in the kinase domain and the other is PBD (more preferred due to specificity). Targeting PLK-1 RNA and the interaction of PLK-1 with a key binding partner can also be approached. However, the list of potent small molecule inhibitors targeting the PBD site of PLK-1 is still not long enough and needs due input from the scientific community. Recently, eminent scientists have proposed targeting the 'Y'-shaped pocket of PLK-1-PBD and encouraged design of ligands that should be able to concurrently bind to two or more modules of the 'Y' pocket. Hence, it is suggested that during molecular interaction analyses, particular focus should be kept on the moiety in each ligand/drug candidate which directly interacts with the amino acid residue(s) that belong(s) to one of the three binding modules which together create this Y-shaped cavity. This obviously includes (but it is not limited to) the 'shallow cleft'-forming residues i.e. Trp414, H538 and K540, as significance of these binding residues has been consistently highlighted by many studies. The present article attempts to give a concise yet critically updated overview of targeting PLK-1 for cancer therapy.
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Affiliation(s)
- Shazi Shakil
- Center of Innovation in Personalized Medicine, King Abdulaziz University, Jeddah, Saudi Arabia; Department of Medical Laboratory Technology, Faculty of Applied Medical Sciences, King Abdulaziz University, Jeddah, Saudi Arabia; Center of Excellence in Genomic Medicine Research, King Abdulaziz University, Jeddah, Saudi Arabia.
| | - Mohammad H Baig
- Department of Medical Biotechnology, Yeungnam University, Gyeongsan 38541, Republic of Korea
| | - Shams Tabrez
- King Fahd Medical Research Center, King Abdulaziz University, Jeddah 21589, Saudi Arabia
| | - Syed M Danish Rizvi
- Department of Pharmacology and Toxicology, College of Pharmacy, University of Hail, Hail, Saudi Arabia
| | - Syed K Zaidi
- Center of Excellence in Genomic Medicine Research, King Abdulaziz University, Jeddah, Saudi Arabia
| | - Ghulam M Ashraf
- King Fahd Medical Research Center, King Abdulaziz University, Jeddah 21589, Saudi Arabia
| | - Shakeel A Ansari
- Center of Excellence in Genomic Medicine Research, King Abdulaziz University, Jeddah, Saudi Arabia
| | - Aftab Aslam Parwaz Khan
- Center of Excellence for Advanced Materials Research, King Abdulaziz University, Jeddah 21589, Saudi Arabia; Chemistry Department, Faculty of Science, King Abdulaziz University, Jeddah 21589, Saudi Arabia
| | - Mohammad H Al-Qahtani
- Center of Excellence in Genomic Medicine Research, King Abdulaziz University, Jeddah, Saudi Arabia
| | - Adel M Abuzenadah
- Center of Innovation in Personalized Medicine, King Abdulaziz University, Jeddah, Saudi Arabia; Center of Excellence in Genomic Medicine Research, King Abdulaziz University, Jeddah, Saudi Arabia
| | - Adeel G Chaudhary
- Center of Innovation in Personalized Medicine, King Abdulaziz University, Jeddah, Saudi Arabia; Center of Excellence in Genomic Medicine Research, King Abdulaziz University, Jeddah, Saudi Arabia
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Carmona-Martínez V, Ruiz-Alcaraz AJ, Vera M, Guirado A, Martínez-Esparza M, García-Peñarrubia P. Therapeutic potential of pteridine derivatives: A comprehensive review. Med Res Rev 2018; 39:461-516. [PMID: 30341778 DOI: 10.1002/med.21529] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2018] [Revised: 07/07/2018] [Accepted: 07/10/2018] [Indexed: 12/19/2022]
Abstract
Pteridines are aromatic compounds formed by fused pyrazine and pyrimidine rings. Many living organisms synthesize pteridines, where they act as pigments, enzymatic cofactors, or immune system activation molecules. This variety of biological functions has motivated the synthesis of a huge number of pteridine derivatives with the aim of studying their therapeutic potential. This review gathers the state-of-the-art of pteridine derivatives, describing their biological activities and molecular targets. The antitumor activity of pteridine-based compounds is one of the most studied and advanced therapeutic potentials, for which several molecular targets have been identified. Nevertheless, pteridines are also considered as very promising therapeutics for the treatment of chronic inflammation-related diseases. On the other hand, many pteridine derivatives have been tested for antimicrobial activities but, although some of them resulted to be active in preliminary assays, a deeper research is needed in this area. Moreover, pteridines may be of use in the treatment of many other diseases, such as diabetes, osteoporosis, ischemia, or neurodegeneration, among others. Thus, the diversity of the biological activities shown by these compounds highlights the promising therapeutic use of pteridine derivatives. Indeed, methotrexate, pralatrexate, and triamterene are Food and Drug Administration approved pteridines, while many others are currently under study in clinical trials.
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Affiliation(s)
- Violeta Carmona-Martínez
- Departamento de Bioquímica, Biología Molecular (B) e Inmunología, Facultad de Medicina, IMIB and Regional Campus of International Excellence "Campus Mare Nostrum," Universidad de Murcia, Murcia, Spain
| | - Antonio J Ruiz-Alcaraz
- Departamento de Bioquímica, Biología Molecular (B) e Inmunología, Facultad de Medicina, IMIB and Regional Campus of International Excellence "Campus Mare Nostrum," Universidad de Murcia, Murcia, Spain
| | - María Vera
- Departamento de Química Orgánica, Universidad de Murcia, Campus de Espinardo, Murcia, Spain
| | - Antonio Guirado
- Departamento de Química Orgánica, Universidad de Murcia, Campus de Espinardo, Murcia, Spain
| | - María Martínez-Esparza
- Departamento de Bioquímica, Biología Molecular (B) e Inmunología, Facultad de Medicina, IMIB and Regional Campus of International Excellence "Campus Mare Nostrum," Universidad de Murcia, Murcia, Spain
| | - Pilar García-Peñarrubia
- Departamento de Bioquímica, Biología Molecular (B) e Inmunología, Facultad de Medicina, IMIB and Regional Campus of International Excellence "Campus Mare Nostrum," Universidad de Murcia, Murcia, Spain
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20
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He Z, Deng W, Jiang B, Liu S, Tang M, Liu Y, Zhang J. Hsa-let-7b inhibits cell proliferation by targeting PLK1 in HCC. Gene 2018; 673:46-55. [PMID: 29913237 DOI: 10.1016/j.gene.2018.06.047] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2018] [Accepted: 06/14/2018] [Indexed: 12/19/2022]
Abstract
Previous studies have shown that high levels of PLK1 are expressed in HCC, and PLK1 inhibitors are being tested in clinical trials. However, the mechanisms, which regulate PLK1 expression in HCC, have not been clarified. Here, we show that induction of let-7b over-expression inhibits the PLK1-regulated luciferase activity in HEK-293T cells, and decreases the levels of PLK1 expression in HCC cells. Furthermore, the levels of let-7b expression were negatively correlated with PLK1 expression in HCC tissues. Let-7b over-expression inhibited the proliferation of HCC cells and promoted their apoptosis, which were partially rescued by increased PLK1 expression. Let-7b over-expression decreased the levels of PLK1, CDC25C and Survivin phosphorylation and CDC2, β-catenin, TCF-4 expression, which were mitigated by increased PLK1 expression in MHCC-97H cells. Let-7b over-expression inhibited the development and growth of implanted HCC tumors in mice by decreasing PLK1 and Survivin expression in the tumors. Together, our data indicated that let-7b targeted PLK1 to inhibit HCC growth and induce their apoptosis by attenuating the PLK1-mediated Survivin phosphorylation. Our findings may provide new insights into the pathogenesis of HCC.
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Affiliation(s)
- Zili He
- Department of Hepatobiliary Surgery, Hunan Provincial People's Hospital/the First Affiliated Hospital of Hunan Normal University, Changsha, Hunan 410005, People's Republic of China; Key Laboratory of Protein Chemistry, Developmental Biology of State Education Ministry of China, College of Life Science, Hunan Normal University, Changsha, Hunan 410081, People's Republic of China; Laboratory of Hepatobiliary Molecular Oncology, Hunan Provincial People's Hospital, Changsha, Hunan 410005, People's Republic of China.
| | - Wen Deng
- Department of Hepatobiliary Surgery, Hunan Provincial People's Hospital/the First Affiliated Hospital of Hunan Normal University, Changsha, Hunan 410005, People's Republic of China
| | - Bo Jiang
- Department of Hepatobiliary Surgery, Hunan Provincial People's Hospital/the First Affiliated Hospital of Hunan Normal University, Changsha, Hunan 410005, People's Republic of China
| | - Sulai Liu
- Department of Hepatobiliary Surgery, Hunan Provincial People's Hospital/the First Affiliated Hospital of Hunan Normal University, Changsha, Hunan 410005, People's Republic of China
| | - Mingchun Tang
- Department of Hepatobiliary Surgery, Hunan Provincial People's Hospital/the First Affiliated Hospital of Hunan Normal University, Changsha, Hunan 410005, People's Republic of China
| | - Yi Liu
- Department of Hepatobiliary Surgery, Hunan Provincial People's Hospital/the First Affiliated Hospital of Hunan Normal University, Changsha, Hunan 410005, People's Republic of China
| | - Jian Zhang
- Key Laboratory of Protein Chemistry, Developmental Biology of State Education Ministry of China, College of Life Science, Hunan Normal University, Changsha, Hunan 410081, People's Republic of China.
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21
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Deshpande S, Patil S, Singh N. Enhancing Gene-Knockdown Efficiency of Poly( N-isopropylacrylamide) Nanogels. ACS OMEGA 2018; 3:8042-8049. [PMID: 30087933 PMCID: PMC6072245 DOI: 10.1021/acsomega.8b00738] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/17/2018] [Accepted: 07/05/2018] [Indexed: 05/29/2023]
Abstract
Polo-like-kinase 1 (PLK1), which is a serine-threonine protein kinase overexpressed in cancer cells, is known to regulate tumor growth and have recently gathered attention as a target gene for RNA interference because of the poor bioavailability and nonspecificity of the available inhibitors. However, the lower transfection efficiency of siRNA and its poor stability in biological mileu necessitate the need of efficient siRNA delivery systems. Here, we report efficacious polymeric nanoparticles for the delivery of PLK1 siRNA in mammalian cancer cells. N-Isopropylacrylamide (NIPAm) and N-isopropylmethacrylamide-co-NIPAm nanogels were synthesized and modified using poly-ε-lysine. Furthermore, their ability to induce gene silencing was investigated by flow cytometry and real-time polymerase chain reaction, and the silencing efficiency observed was related to the polymer composition and its effect on the gene loading and protection ability and the endosomal escape capability. This study attempts to leverage the understanding of the cell-material interaction, thus, addressing the bottlenecks of siRNA delivery for enhancing the efficacy of the poly(N-isopropylacrylamide)-based delivery vehicle.
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Affiliation(s)
- Sonal Deshpande
- Centre
for Biomedical Engineering, Indian Institute
of Technology-Delhi, Hauz Khas, New Delhi 110016, India
| | - Smita Patil
- Centre
for Biomedical Engineering, Indian Institute
of Technology-Delhi, Hauz Khas, New Delhi 110016, India
| | - Neetu Singh
- Centre
for Biomedical Engineering, Indian Institute
of Technology-Delhi, Hauz Khas, New Delhi 110016, India
- Biomedical
Engineering Unit, All India Institute of
Medical Sciences, Ansari Nagar, New Delhi 110029, India
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22
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Kakoschky B, Pleli T, Schmithals C, Zeuzem S, Brüne B, Vogl TJ, Korf HW, Weigert A, Piiper A. Selective targeting of tumor associated macrophages in different tumor models. PLoS One 2018; 13:e0193015. [PMID: 29447241 PMCID: PMC5814016 DOI: 10.1371/journal.pone.0193015] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2017] [Accepted: 02/03/2018] [Indexed: 12/14/2022] Open
Abstract
Tumor progression largely depends on the presence of alternatively polarized (M2) tumor-associated macrophages (TAMs), whereas the classical M1-polarized macrophages can promote anti-tumorigenic immune responses. Thus, selective inhibition of M2-TAMs is a desirable anti-cancer approach in highly resistant tumor entities such as hepatocellular carcinoma (HCC) or breast cancer. We here examined whether a peptide that selectively binds to and is internalized by in vitro-differentiated murine M2 macrophages as compared to M1 macrophages, termed M2pep, could be used to selectively target TAMs in HCC and breast carcinoma. We confirmed selectivity of M2pep for in vitro M2 polarized macrophages. Upon incubation of suspended mixed 4T1 tumor cells with M2pep, high amounts of the TAMs were found to be associated with M2pep, whereas in mixed tumor cell suspensions from two HCC mouse models, M2pep showed only low-degree binding to TAMs. M2pep also showed low-degree targeting of liver macrophages. This indicates that the TAMs in different tumor entities show different targeting of M2pep and that M2pep is a very promising approach to develop selective M2-TAM-targeting in tumor entities containing M2-TAMs with significant amounts of the so far elusive M2pep receptor(s).
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Affiliation(s)
- Bianca Kakoschky
- Department of Medicine 1, University Hospital Frankfurt, Frankfurt, Germany
| | - Thomas Pleli
- Department of Medicine 1, University Hospital Frankfurt, Frankfurt, Germany
| | | | - Stefan Zeuzem
- Department of Medicine 1, University Hospital Frankfurt, Frankfurt, Germany
| | - Bernhard Brüne
- Institute of Biochemistry I, Goethe-University Frankfurt, Frankfurt, Germany
| | - Thomas J. Vogl
- Department of Diagnostic and Interventional Radiology, University Hospital Frankfurt, Frankfurt, Germany
| | - Horst-Werner Korf
- Institute of Anatomy 2, University Hospital Frankfurt, Frankfurt, Germany
| | - Andreas Weigert
- Institute of Biochemistry I, Goethe-University Frankfurt, Frankfurt, Germany
| | - Albrecht Piiper
- Department of Medicine 1, University Hospital Frankfurt, Frankfurt, Germany
- * E-mail:
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23
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Combined effects of PLK1 and RAS in hepatocellular carcinoma reveal rigosertib as promising novel therapeutic "dual-hit" option. Oncotarget 2017; 9:3605-3618. [PMID: 29423069 PMCID: PMC5790486 DOI: 10.18632/oncotarget.23188] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2017] [Accepted: 12/03/2017] [Indexed: 02/07/2023] Open
Abstract
Inhibition of RAS-RAF-ERK-signaling is a major mechanism mediated by the multi-kinase inhibitors sorafenib and regorafenib, the only effective therapeutic approaches for advanced hepatocellular carcinoma (HCC). This underlines the importance of RAS-RAF-ERK-signaling in HCC. Most RAS isoforms were not yet described to play crucial roles in HCC. However, several studies indicate that the HRAS isoform can function as potent oncogene in HCC, but pharmacologic RAS inhibition has not yet been investigated. Moreover, the cell cycle promoting polo-like kinase 1 (PLK1) is an increasingly recognized therapeutic target in HCC that can be activated by RAS-RAF-signaling. A recently developed small molecule inhibitor, ON-01910 ("rigosertib", RGS), was shown to interfere with both RAS- and PLK1-signaling. The aim of this study was to analyze the effects of RGS in HCC and to assess PLK1 and HRAS expression in HCC. RGS treatment reduced cell proliferation and induced cell cycle arrest in human HCC cell lines in vitro. Moreover, RGS strongly inhibited both ERK- and AKT-activation in HCC cells, indicating disruption of RAS-signaling. Analysis of HCC patient data showed that PLK1 and HRAS expression levels are upregulated during HCC development and in advanced HCC, respectively. High expression levels of PLK1 significantly correlated with poor patient survival. Moreover, high expression of both PLK1 and HRAS revealed combined effects on patient outcome. This underscores the importance of these genes and associated pathways in HCC. We newly demonstrate the therapeutic potential of RGS in HCC by inhibition of both PLK1 activation and major RAS-pathways, revealing a novel therapeutic "dual-hit" approach for HCC.
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24
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Dropmann A, Dediulia T, Breitkopf-Heinlein K, Korhonen H, Janicot M, Weber SN, Thomas M, Piiper A, Bertran E, Fabregat I, Abshagen K, Hess J, Angel P, Coulouarn C, Dooley S, Meindl-Beinker NM. TGF-β1 and TGF-β2 abundance in liver diseases of mice and men. Oncotarget 2017; 7:19499-518. [PMID: 26799667 PMCID: PMC4991397 DOI: 10.18632/oncotarget.6967] [Citation(s) in RCA: 50] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2015] [Accepted: 01/01/2016] [Indexed: 01/11/2023] Open
Abstract
TGF-β1 is a major player in chronic liver diseases promoting fibrogenesis and tumorigenesis through various mechanisms. The expression and function of TGF-β2 have not been investigated thoroughly in liver disease to date. In this paper, we provide evidence that TGF-β2 expression correlates with fibrogenesis and liver cancer development. Using quantitative realtime PCR and ELISA, we show that TGF-β2 mRNA expression and secretion increased in murine HSCs and hepatocytes over time in culture and were found in the human-derived HSC cell line LX-2. TGF-β2 stimulation of the LX-2 cells led to upregulation of the TGF-β receptors 1, 2, and 3, whereas TGF-β1 treatment did not alter or decrease their expression. In liver regeneration and fibrosis upon CCl4 challenge, the transient increase of TGF-β2 expression was accompanied by TGF-β1 and collagen expression. In bile duct ligation-induced fibrosis, TGF-β2 upregulation correlated with fibrotic markers and was more prominent than TGF-β1 expression. Accordingly, MDR2-KO mice showed significant TGF-β2 upregulation within 3 to 15 months but minor TGF-β1 expression changes. In 5 of 8 hepatocellular carcinoma (HCC)/hepatoblastoma cell lines, relatively high TGF-β2 expression and secretion were observed, with some cell lines even secreting more TGF-β2 than TGF-β1. TGF-β2 was also upregulated in tumors of TGFα/cMyc and DEN-treated mice. The analysis of publically available microarray data of 13 human HCC collectives revealed considerable upregulation of TGF-β2 as compared to normal liver. Our study demonstrates upregulation of TGF-β2 in liver disease and suggests TGF-β2 as a promising therapeutic target for tackling fibrosis and HCC.
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Affiliation(s)
- Anne Dropmann
- Molecular Hepatology, Department of Medicine II, Medical Faculty Mannheim, University of Heidelberg, Heidelberg, Germany
| | - Tatjana Dediulia
- Molecular Hepatology, Department of Medicine II, Medical Faculty Mannheim, University of Heidelberg, Heidelberg, Germany
| | - Katja Breitkopf-Heinlein
- Department of Medicine II, Medical Faculty Mannheim, University of Heidelberg, Heidelberg, Germany
| | | | | | - Susanne N Weber
- Department of Medicine II, Saarland University Medical Center, Homburg, Germany
| | - Maria Thomas
- Dr. Margarete Fischer-Bosch Institute of Clinical Pharmacology, Stuttgart, Germany.,University of Tuebingen, Tuebingen, Germany
| | - Albrecht Piiper
- Medizinische Klinik 1, Klinikum der Johann Wolfgang Goethe-Universität, Frankfurt am Main, Germany
| | - Esther Bertran
- Bellvitge Biomedical Research Institute (IDIBELL) and University of Barcelona L'Hospitalet, Barcelona, Spain
| | - Isabel Fabregat
- Bellvitge Biomedical Research Institute (IDIBELL) and University of Barcelona L'Hospitalet, Barcelona, Spain
| | - Kerstin Abshagen
- Institute for Experimental Surgery, Rostock University Medical Center, Rostock, Germany
| | - Jochen Hess
- Research Group Molecular Mechanisms of Head and Neck Tumors, German Cancer Research Center (DKFZ), Heidelberg, Germany.,Section Experimental and Translational Head and Neck Oncology, Department of Otolaryngology, Head and Neck Surgery, University Hospital Heidelberg, Heidelberg, Germany
| | - Peter Angel
- Division of Signal Transduction and Growth Control, DKFZ-ZMBH Alliance, German Cancer Research Center (DKFZ), Heidelberg, Germany
| | - Cédric Coulouarn
- Institut National de la Santé et de la Recherche Médicale UMR991, University of Rennes, Pontchaillou University Hospital, Rennes, France
| | - Steven Dooley
- Molecular Hepatology, Department of Medicine II, Medical Faculty Mannheim, University of Heidelberg, Heidelberg, Germany
| | - Nadja M Meindl-Beinker
- Molecular Hepatology, Department of Medicine II, Medical Faculty Mannheim, University of Heidelberg, Heidelberg, Germany
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25
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Ibrahim AA, Schmithals C, Kowarz E, Köberle V, Kakoschky B, Pleli T, Kollmar O, Nitsch S, Waidmann O, Finkelmeier F, Zeuzem S, Korf HW, Schmid T, Weigert A, Kronenberger B, Marschalek R, Piiper A. Hypoxia Causes Downregulation of Dicer in Hepatocellular Carcinoma, Which Is Required for Upregulation of Hypoxia-Inducible Factor 1α and Epithelial-Mesenchymal Transition. Clin Cancer Res 2017; 23:3896-3905. [PMID: 28167508 DOI: 10.1158/1078-0432.ccr-16-1762] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2016] [Revised: 01/18/2017] [Accepted: 01/19/2017] [Indexed: 11/16/2022]
Abstract
Purpose: A role of Dicer, which converts precursor miRNAs to mature miRNAs, in the tumor-promoting effect of hypoxia is currently emerging in some tumor entities. Its role in hepatocellular carcinoma (HCC) is unknown.Experimental Design: HepG2 and Huh-7 cells were stably transfected with an inducible Dicer expression vector and were exposed to hypoxia/normoxia. HepG2-Dicer xenografts were established in nude mice; hypoxic areas and Dicer were detected in HCC xenografts and HCCs from mice with endogenous hepatocarcinogenesis; and epithelial-mesenchymal transition (EMT) markers were analyzed by immunohistochemistry or by immunoblotting. The correlation between Dicer and carbonic anhydrase 9 (CA9), a marker of hypoxia, was investigated in resected human HCCs.Results: Hypoxia increased EMT markers in vitro and in vivo and led to a downregulation of Dicer in HCC cells. The levels of Dicer were downregulated in hypoxic tumor regions in mice with endogenous hepatocarcinogenesis and in HepG2 xenografts. In human HCCs, the levels of Dicer correlated inversely with those of CA9, indicating that the negative regulation of Dicer by hypoxia also applies to HCC patients. Forced expression of Dicer prevented the hypoxia-induced increase in hypoxia-inducible factor 1α (HIF1α), HIF2α, hypoxia-inducible genes (CA9, glucose transporter 1), EMT markers, and cell migration.Conclusions: We here identify downmodulation of Dicer as novel essential process in hypoxia-induced EMT in HCC and demonstrate that induced expression of Dicer counteracted hypoxia-induced EMT. Thus, targeting hypoxia-induced downmodulation of Dicer is a promising novel strategy to reduce HCC progression. Clin Cancer Res; 23(14); 3896-905. ©2017 AACR.
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Affiliation(s)
- Ahmed Atef Ibrahim
- Department of Medicine 1, University Hospital Frankfurt, Frankfurt, Germany.,The Immunology and Infectious Diseases Laboratory, Therapeutic Chemistry Department, The National Research Center, Dokki, Cairo, Egypt
| | | | - Erik Kowarz
- Institute of Pharmaceutical Biology, Goethe-University of Frankfurt Biocenter, Frankfurt/Main, Germany
| | - Verena Köberle
- Department of Medicine 1, University Hospital Frankfurt, Frankfurt, Germany
| | - Bianca Kakoschky
- Department of Medicine 1, University Hospital Frankfurt, Frankfurt, Germany
| | - Thomas Pleli
- Department of Medicine 1, University Hospital Frankfurt, Frankfurt, Germany
| | - Otto Kollmar
- Department of General and Visceral Surgery, HELIOS Dr. Horst Schmidt-Kliniken, Wiesbaden, Germany
| | - Scarlett Nitsch
- Department of Medicine 1, University Hospital Frankfurt, Frankfurt, Germany.,Department of Biology, Technical University of Darmstadt, Darmstadt, Germany
| | - Oliver Waidmann
- Department of Medicine 1, University Hospital Frankfurt, Frankfurt, Germany
| | - Fabian Finkelmeier
- Department of Medicine 1, University Hospital Frankfurt, Frankfurt, Germany
| | - Stefan Zeuzem
- Department of Medicine 1, University Hospital Frankfurt, Frankfurt, Germany
| | - Horst-Werner Korf
- Institute of Anatomy 2, University Hospital Frankfurt, Frankfurt, Germany
| | - Tobias Schmid
- Institute of Biochemistry I, Goethe-University Frankfurt, Frankfurt am Main, Germany
| | - Andreas Weigert
- Institute of Biochemistry I, Goethe-University Frankfurt, Frankfurt am Main, Germany
| | - Bernd Kronenberger
- Department of Medicine 1, University Hospital Frankfurt, Frankfurt, Germany
| | - Rolf Marschalek
- Institute of Pharmaceutical Biology, Goethe-University of Frankfurt Biocenter, Frankfurt/Main, Germany
| | - Albrecht Piiper
- Department of Medicine 1, University Hospital Frankfurt, Frankfurt, Germany.
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26
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Abstract
Mutations in cancer cells frequently result in cell cycle alterations that lead to unrestricted growth compared to normal cells. Considering this phenomenon, many drugs have been developed to inhibit different cell-cycle phases. Mitotic phase targeting disturbs mitosis in tumor cells, triggers the spindle assembly checkpoint and frequently results in cell death. The first anti-mitotics to enter clinical trials aimed to target tubulin. Although these drugs improved the treatment of certain cancers, and many anti-microtubule compounds are already approved for clinical use, severe adverse events such as neuropathies were observed. Since then, efforts have been focused on the development of drugs that also target kinases, motor proteins and multi-protein complexes involved in mitosis. In this review, we summarize the major proteins involved in the mitotic phase that can also be targeted for cancer treatment. Finally, we address the activity of anti-mitotic drugs tested in clinical trials in recent years.
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27
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Awad MM, Chu QSC, Gandhi L, Stephenson JJ, Govindan R, Bradford DS, Bonomi PD, Ellison DM, Eaton KD, Fritsch H, Munzert G, Johnson BE, Socinski MA. An open-label, phase II study of the polo-like kinase-1 (Plk-1) inhibitor, BI 2536, in patients with relapsed small cell lung cancer (SCLC). Lung Cancer 2017; 104:126-130. [PMID: 28212994 DOI: 10.1016/j.lungcan.2016.12.019] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2016] [Revised: 12/20/2016] [Accepted: 12/26/2016] [Indexed: 12/01/2022]
Abstract
OBJECTIVES This phase II, open-label study was designed to evaluate the response rate to the polo-like kinase 1 (Plk-1) inhibitor BI 2536 in patients with sensitive-relapsed small cell lung cancer (SCLC). Secondary endpoints included progression-free survival (PFS), overall survival (OS), duration of response, and safety. MATERIALS AND METHODS Patients were treated with the recommended phase II dose of 200mg of BI 2536 intravenously every 21days. This was a two-stage design with an early stopping rule in place if responses were not seen in at least 2 of the first 18 enrolled patients. RESULTS AND CONCLUSION Twenty-three patients were enrolled in the study and 21 patients were evaluable for response. No responses were observed and all 23 patients have progressed. The median PFS was 1.4 months. Treatment was generally well tolerated and the most frequent adverse events were neutropenia, fatigue, nausea, vomiting, and constipation. BI 2536 is not effective in the treatment of sensitive relapsed SCLC. The criteria for expanding the trial to the second stage were not achieved, and the study was terminated for a lack of efficacy.
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Affiliation(s)
- Mark M Awad
- Lowe Center for Thoracic Oncology, Dana-Farber Cancer Institute, Harvard Medical School, Boston, MA, USA
| | - Quincy S-C Chu
- Cross Cancer Institute, University of Alberta, Edmonton, Alberta, Canada
| | - Leena Gandhi
- Lowe Center for Thoracic Oncology, Dana-Farber Cancer Institute, Harvard Medical School, Boston, MA, USA
| | | | | | | | | | - David M Ellison
- Charleston Hematology Oncology Associates, Charleston, SC, USA
| | | | | | | | - Bruce E Johnson
- Lowe Center for Thoracic Oncology, Dana-Farber Cancer Institute, Harvard Medical School, Boston, MA, USA.
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Liu Z, Sun Q, Wang X. PLK1, A Potential Target for Cancer Therapy. Transl Oncol 2016; 10:22-32. [PMID: 27888710 PMCID: PMC5124362 DOI: 10.1016/j.tranon.2016.10.003] [Citation(s) in RCA: 282] [Impact Index Per Article: 35.3] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2016] [Revised: 10/06/2016] [Accepted: 10/11/2016] [Indexed: 12/14/2022] Open
Abstract
Polo-like kinase 1 (PLK1) plays an important role in the initiation, maintenance, and completion of mitosis. Dysfunction of PLK1 may promote cancerous transformation and drive its progression. PLK1 overexpression has been found in a variety of human cancers and was associated with poor prognoses in cancers. Many studies have showed that inhibition of PLK1 could lead to death of cancer cells by interfering with multiple stages of mitosis. Thus, PLK1 is expected to be a potential target for cancer therapy. In this article, we examined PLK1’s structural characteristics, its regulatory roles in cell mitosis, PLK1 expression, and its association with survival prognoses of cancer patients in a wide variety of cancer types, PLK1 interaction networks, and PLK1 inhibitors under investigation. Finally, we discussed the key issues in the development of PLK1-targeted cancer therapy.
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Affiliation(s)
- Zhixian Liu
- Department of Basic Medicine, School of Basic Medicine and Clinical Pharmacy, China Pharmaceutical University, Nanjing 211198, China
| | - Qingrong Sun
- School of Science, China Pharmaceutical University, Nanjing 211198, China
| | - Xiaosheng Wang
- Department of Basic Medicine, School of Basic Medicine and Clinical Pharmacy, China Pharmaceutical University, Nanjing 211198, China.
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29
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Fischer PM. Approved and Experimental Small-Molecule Oncology Kinase Inhibitor Drugs: A Mid-2016 Overview. Med Res Rev 2016; 37:314-367. [DOI: 10.1002/med.21409] [Citation(s) in RCA: 50] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2016] [Revised: 08/04/2016] [Accepted: 08/09/2016] [Indexed: 12/14/2022]
Affiliation(s)
- Peter M. Fischer
- School of Pharmacy and Centre for Biomolecular Sciences; University of Nottingham; Nottingham NG7 2RD UK
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30
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Wu CP, Hsieh CH, Hsiao SH, Luo SY, Su CY, Li YQ, Huang YH, Huang CW, Hsu SC. Human ATP-Binding Cassette Transporter ABCB1 Confers Resistance to Volasertib (BI 6727), a Selective Inhibitor of Polo-like Kinase 1. Mol Pharm 2015; 12:3885-95. [PMID: 26412161 DOI: 10.1021/acs.molpharmaceut.5b00312] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
The overexpression of the serine/threonine specific polo-like kinase 1 (Plk1) is associated with poor prognosis in many types of cancer. Consequently, Plk1 has emerged as a valid therapeutic target for anticancer drug design. Volasertib is a potent inhibitor of Plk1 that inhibits the proliferation of multiple human cancer cell lines by promoting cell cycle arrest at nanomolar concentrations. However, the risk of developing drug resistance, which is often associated with the overexpression of the ATP-binding cassette (ABC) transporter ABCB1 (P-glycoprotein), can present a therapeutic challenge for volasertib and many other therapeutic drugs. Although volasertib is highly effective against the proliferation of numerous cancer cell lines, we found that the overexpression of ABCB1 in cancer cells leads to cellular resistance to volasertib and reduces the level of volasertib-stimulated G2/M cell cycle arrest and subsequent onset of apoptosis. Furthermore, we demonstrate that volasertib competitively inhibits the function of ABCB1 and stimulates the basal ATPase activity of ABCB1 in a concentration-dependent manner, which is consistent with substrate transport by ABCB1. More importantly, we discovered that the coadministration of an inhibitor or drug substrate of ABCB1 restored the anticancer activity of volasertib in ABCB1-overexpressing cancer cells. In conclusion, the results of our study reveal that ABCB1 negatively affects the efficacy of volasertib and supports its combination with a modulator of ABCB1 to improve clinical responses.
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Affiliation(s)
| | | | | | | | | | | | | | - Chiun-Wei Huang
- Center for Advanced Molecular Imaging and Translation, Chang Gung Memorial Hospital , Tao-Yuan, Taiwan
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31
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Schmithals C, Köberle V, Korkusuz H, Pleli T, Kakoschky B, Augusto EA, Ibrahim AA, Arencibia JM, Vafaizadeh V, Groner B, Korf HW, Kronenberger B, Zeuzem S, Vogl TJ, Waidmann O, Piiper A. Improving Drug Penetrability with iRGD Leverages the Therapeutic Response to Sorafenib and Doxorubicin in Hepatocellular Carcinoma. Cancer Res 2015; 75:3147-54. [PMID: 26239478 DOI: 10.1158/0008-5472.can-15-0395] [Citation(s) in RCA: 51] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
iRGD is a derivative of the integrin-binding peptide RGD, which selectively increases the penetrability of tumor tissue to various coadministered substances in several preclinical models. In this study, we investigated the ability of iRGD to improve the delivery of sorafenib and doxorubicin therapy in hepatocellular carcinoma (HCC) using established mouse models of the disease. A contrast-enhanced MRI method was developed in parallel to assess the in vivo effects of iRGD in this setting. We found that iRGD improved the delivery of marker substances to the tumors of HCC-bearing mice about three-fold without a parallel increase in normal tissues. Control peptides lacking the critical CendR motif had no effect. Similarly, iRGD also selectively increased the signal intensity from tumors in Gd-DTPA-enhanced MRI. In terms of antitumor efficacy, iRGD coadministration significantly augmented the individual inhibitory effects of sorafenib and doxorubicin without increasing systemic toxicity. Overall, our results offered a preclinical proof of concept for the use of iRGD coadministration as a strategy to widen the therapeutic window for HCC chemotherapy, as monitored by Gd-DTPA-enhanced MRI as a noninvasive, clinically applicable method to identify iRGD-reactive tumors.
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Affiliation(s)
| | - Verena Köberle
- Department of Medicine 1, University Hospital Frankfurt, Frankfurt, Germany
| | - Hüdayi Korkusuz
- Department of Nuclear Medicine, University Hospital Frankfurt, Frankfurt, Germany
| | - Thomas Pleli
- Department of Medicine 1, University Hospital Frankfurt, Frankfurt, Germany
| | - Bianca Kakoschky
- Department of Medicine 1, University Hospital Frankfurt, Frankfurt, Germany
| | | | - Ahmed Atef Ibrahim
- Department of Medicine 1, University Hospital Frankfurt, Frankfurt, Germany. The Immunology and Infectious Diseases Laboratory, Therapeutic Chemistry Department, The National Research Center, Dokki, Cairo, Egypt
| | - Jose M Arencibia
- Department of Medicine 1, University Hospital Frankfurt, Frankfurt, Germany
| | | | | | - Horst-Werner Korf
- Institute of Anatomy 2, University Hospital Frankfurt, Frankfurt, Germany
| | - Bernd Kronenberger
- Department of Medicine 1, University Hospital Frankfurt, Frankfurt, Germany
| | - Stefan Zeuzem
- Department of Medicine 1, University Hospital Frankfurt, Frankfurt, Germany
| | - Thomas J Vogl
- Department of Diagnostic and Interventional Radiology, University Hospital Frankfurt, Frankfurt, Germany
| | - Oliver Waidmann
- Department of Medicine 1, University Hospital Frankfurt, Frankfurt, Germany
| | - Albrecht Piiper
- Department of Medicine 1, University Hospital Frankfurt, Frankfurt, Germany.
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32
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McCarroll JA, Dwarte T, Baigude H, Dang J, Yang L, Erlich RB, Kimpton K, Teo J, Sagnella SM, Akerfeldt MC, Liu J, Phillips PA, Rana TM, Kavallaris M. Therapeutic targeting of polo-like kinase 1 using RNA-interfering nanoparticles (iNOPs) for the treatment of non-small cell lung cancer. Oncotarget 2015; 6:12020-34. [PMID: 25557168 PMCID: PMC4494920 DOI: 10.18632/oncotarget.2664] [Citation(s) in RCA: 49] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2014] [Accepted: 10/27/2014] [Indexed: 01/29/2023] Open
Abstract
Non-small cell lung cancer (NSCLC) remains the most common cause of cancer death worldwide due its resistance to chemotherapy and aggressive tumor growth. Polo-like kinase 1 (PLK1) is a serine-threonine protein kinase which is overexpressed in cancer cells, and plays a major role in regulating tumor growth. A number of PLK1 inhibitors are in clinical trial; however, poor tumor bioavailability and off-target effects limit their efficacy. Short-interfering-RNA (siRNA) holds promise as a class of therapeutics, which can selectively silence disease-causing genes. However, siRNA cannot enter cells without a delivery vehicle. Herein, we investigated whether RNAi-interfering nanoparticles could deliver siRNA to NSCLC cells and silence PLK1 expression in vitro and in vivo. iNOP-7 was non-toxic, and delivered siRNA with high efficiency to NSCLC cells. iNOP-7-PLK1 siRNA silenced PLK1 expression and reduced NSCLC growth in vitro. Notably, iNOP-7 delivered siRNA to orthotopic lung tumors in mice, and administration of iNOP-7-PLK1 siRNA reduced lung tumor burden. These novel data show that iNOP-7 can deliver siRNA against PLK1 to NSCLC cells, and decrease cell proliferation both in vitro and in vivo. iNOP-7-PLK1 siRNA may provide a novel therapeutic strategy for the treatment of NSCLC as well as other cancers which aberrantly express this gene.
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Affiliation(s)
- Joshua A. McCarroll
- Children's Cancer Institute, Lowy Cancer Research Centre, Randwick, UNSW Australia (UNSW), NSW, Australia
- ARC Centre of Excellence in Convergent Bio-Nano Science and Technology, Australian Centre for NanoMedicine, UNSW, NSW, Australia
| | - Tanya Dwarte
- Children's Cancer Institute, Lowy Cancer Research Centre, Randwick, UNSW Australia (UNSW), NSW, Australia
| | - Huricha Baigude
- Program for RNA Biology, Sanford-Burnham Medical Research Institute, La Jolla, CA, USA
| | - Jason Dang
- Program for RNA Biology, Sanford-Burnham Medical Research Institute, La Jolla, CA, USA
- Department of Pediatrics, University of California, San Diego, School of Medicine, La Jolla, CA, USA
| | - Lu Yang
- Children's Cancer Institute, Lowy Cancer Research Centre, Randwick, UNSW Australia (UNSW), NSW, Australia
| | - Rafael B. Erlich
- Children's Cancer Institute, Lowy Cancer Research Centre, Randwick, UNSW Australia (UNSW), NSW, Australia
- ARC Centre of Excellence in Convergent Bio-Nano Science and Technology, Australian Centre for NanoMedicine, UNSW, NSW, Australia
| | - Kathleen Kimpton
- Children's Cancer Institute, Lowy Cancer Research Centre, Randwick, UNSW Australia (UNSW), NSW, Australia
| | - Joann Teo
- Children's Cancer Institute, Lowy Cancer Research Centre, Randwick, UNSW Australia (UNSW), NSW, Australia
- ARC Centre of Excellence in Convergent Bio-Nano Science and Technology, Australian Centre for NanoMedicine, UNSW, NSW, Australia
| | - Sharon M. Sagnella
- Children's Cancer Institute, Lowy Cancer Research Centre, Randwick, UNSW Australia (UNSW), NSW, Australia
- ARC Centre of Excellence in Convergent Bio-Nano Science and Technology, Australian Centre for NanoMedicine, UNSW, NSW, Australia
| | - Mia C. Akerfeldt
- Children's Cancer Institute, Lowy Cancer Research Centre, Randwick, UNSW Australia (UNSW), NSW, Australia
| | - Jie Liu
- Pancreatic Cancer Translational Research Group, Lowy Cancer Research Centre, Prince of Wales Clinical School, UNSW, NSW, Australia
| | - Phoebe A. Phillips
- ARC Centre of Excellence in Convergent Bio-Nano Science and Technology, Australian Centre for NanoMedicine, UNSW, NSW, Australia
- Pancreatic Cancer Translational Research Group, Lowy Cancer Research Centre, Prince of Wales Clinical School, UNSW, NSW, Australia
| | - Tariq M. Rana
- Program for RNA Biology, Sanford-Burnham Medical Research Institute, La Jolla, CA, USA
- Department of Pediatrics, University of California, San Diego, School of Medicine, La Jolla, CA, USA
| | - Maria Kavallaris
- Children's Cancer Institute, Lowy Cancer Research Centre, Randwick, UNSW Australia (UNSW), NSW, Australia
- ARC Centre of Excellence in Convergent Bio-Nano Science and Technology, Australian Centre for NanoMedicine, UNSW, NSW, Australia
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33
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Scheiermann P, Bachmann M, Härdle L, Pleli T, Piiper A, Zwissler B, Pfeilschifter J, Mühl H. Application of IL-36 receptor antagonist weakens CCL20 expression and impairs recovery in the late phase of murine acetaminophen-induced liver injury. Sci Rep 2015; 5:8521. [PMID: 25687687 PMCID: PMC4330543 DOI: 10.1038/srep08521] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2014] [Accepted: 01/22/2015] [Indexed: 12/14/2022] Open
Abstract
Overdosing of the analgesic acetaminophen (APAP, paracetamol) is a major cause of acute liver injury. Whereas toxicity is initiated by hepatocyte necrosis, course of disease is regulated by mechanisms of innate immunity having the potential to serve in complex manner pathogenic or pro-regenerative functions. Interleukin (IL)-36γ has been identified as novel IL-1-like cytokine produced by and targeting epithelial (-like) tissues. Herein, we investigated IL-36γ in acute liver disease focusing on murine APAP-induced hepatotoxicity. Enhanced expression of hepatic IL-36γ and its prime downstream chemokine target CCL20 was detected upon liver injury. CCL20 expression coincided with the later regeneration phase of intoxication. Primary murine hepatocytes and human Huh7 hepatocellular carcinoma cells indeed displayed enhanced IL-36γ expression when exposed to inflammatory cytokines. Administration of IL-36 receptor antagonist (IL-36Ra) decreased hepatic CCL20 in APAP-treated mice. Unexpectedly, IL-36Ra likewise increased late phase hepatic injury as detected by augmented serum alanine aminotransferase activity and histological necrosis which suggests disturbed tissue recovery upon IL-36 blockage. Finally, we demonstrate induction of IL-36γ in inflamed livers of endotoxemic mice. Observations presented introduce IL-36γ as novel parameter in acute liver injury which may contribute to the decision between unleashed tissue damage and initiation of liver regeneration during late APAP toxicity.
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Affiliation(s)
- Patrick Scheiermann
- 1] pharmazentrum frankfurt/ZAFES, University Hospital Goethe-University Frankfurt [2] Clinic for Anesthesiology, University Hospital Ludwig-Maximilians-University Munich
| | - Malte Bachmann
- pharmazentrum frankfurt/ZAFES, University Hospital Goethe-University Frankfurt
| | - Lorena Härdle
- pharmazentrum frankfurt/ZAFES, University Hospital Goethe-University Frankfurt
| | - Thomas Pleli
- Medical Clinic I, University Hospital Goethe-University Frankfurt, Germany
| | - Albrecht Piiper
- Medical Clinic I, University Hospital Goethe-University Frankfurt, Germany
| | - Bernhard Zwissler
- Clinic for Anesthesiology, University Hospital Ludwig-Maximilians-University Munich
| | - Josef Pfeilschifter
- pharmazentrum frankfurt/ZAFES, University Hospital Goethe-University Frankfurt
| | - Heiko Mühl
- pharmazentrum frankfurt/ZAFES, University Hospital Goethe-University Frankfurt
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34
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Detection of hepatocellular carcinoma in transgenic mice by Gd-DTPA- and rhodamine 123-conjugated human serum albumin nanoparticles in T1 magnetic resonance imaging. J Control Release 2015; 199:63-71. [DOI: 10.1016/j.jconrel.2014.11.023] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2014] [Revised: 11/17/2014] [Accepted: 11/23/2014] [Indexed: 12/13/2022]
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35
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Bogado RFE, Pezuk JA, de Oliveira HF, Tone LG, Brassesco MS. BI 6727 and GSK461364 suppress growth and radiosensitize osteosarcoma cells, but show limited cytotoxic effects when combined with conventional treatments. Anticancer Drugs 2015; 26:56-63. [PMID: 25089571 DOI: 10.1097/cad.0000000000000157] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
Polo-like kinase 1 (PLK1), a key regulator of mitosis, is often overexpressed in childhood cancers and is associated with poor prognosis. Previous reports have shown that inhibition of PLK1 might serve as a promising anticancer treatment for osteosarcoma. In this study, we tested the second-generation PLK1 inhibitors BI 6727 and GSK461364 in HOS and MG-63 cell lines, both as a single agent and in combination with methotrexate, cisplatin, vinblastine, doxorubicin, or ionizing radiation. Both PLK1 inhibitors worked equally in terms of cell growth arrest, apoptosis induction, and radiosensitization. Combining BI 6727 or GSK461364 with conventional treatments, however, showed trivial synergistic antitumor effects in vitro. Our results reinforce the potential use of PLK1 inhibitors for a pharmacologic intervention in osteosarcoma, although their applicability in polychemotherapeutic regimens deserves further investigation.
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Affiliation(s)
- Rodrigo F E Bogado
- aFaculty of Exact, Chemical and Natural Sciences, University of Misiones, Argentina Departments of bGenetics cClinics dPediatrics, Ribeirão Preto School of Medicine eDepartment of Biology, Faculty of Philosophy, Sciences and Letters at Ribeirão Preto, University of São Paulo, Brazil
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Gjertsen BT, Schöffski P. Discovery and development of the Polo-like kinase inhibitor volasertib in cancer therapy. Leukemia 2015; 29:11-9. [PMID: 25027517 PMCID: PMC4335352 DOI: 10.1038/leu.2014.222] [Citation(s) in RCA: 150] [Impact Index Per Article: 16.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2014] [Revised: 06/05/2014] [Accepted: 07/02/2014] [Indexed: 11/09/2022]
Abstract
Owing to their integral involvement in cell cycle regulation, the Polo-like kinase (Plk) family, particularly Plk1, has emerged as an attractive therapeutic target in oncology. In recent years, several Plk1 inhibitors have been developed, with some agents showing encouraging results in early-phase clinical trials. This review focuses on volasertib (BI 6727; an investigational agent), a potent and selective Plk inhibitor. Volasertib has shown promising activity in various cancer cell lines and xenograft models of human cancer. Trials performed to date suggest that volasertib has clinical efficacy in a range of malignancies, with the most promising results seen in patients with acute myeloid leukemia (AML). Encouragingly, recent phase II data have demonstrated that volasertib combined with low-dose cytarabine (LDAC) was associated with higher response rates and improved event-free survival than LDAC alone in patients with previously untreated AML. Based on these observations, and its presumably manageable safety profile, volasertib is currently in phase III development as a potential treatment for patients with AML who are ineligible for intensive remission induction therapy. Given that many patients with AML are of an older age and frail, this constitutes an area of major unmet need. In this review, we discuss the biologic rationale for Plk1 inhibitors in cancer, the clinical development of volasertib to date in solid tumors and AML, and the future identification of biomarkers that might predict response to volasertib and help determine the role of this agent in the clinic.
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Affiliation(s)
- B T Gjertsen
- Centre for Cancer Biomarkers (CCBIO), Department of Clinical Science, University of Bergen, Bergen, Norway
- Department of Internal Medicine, Haematology Section, Haukeland University Hospital, Bergen, Norway
| | - P Schöffski
- Department of General Medical Oncology, Leuven Cancer Institute, University Hospitals Leuven, Katholieke Universiteit Leuven, Leuven, Belgium
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37
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Cancer subclonal genetic architecture as a key to personalized medicine. Neoplasia 2014; 15:1410-20. [PMID: 24403863 DOI: 10.1593/neo.131972] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2013] [Revised: 12/03/2013] [Accepted: 12/03/2013] [Indexed: 02/08/2023] Open
Abstract
The future of personalized oncological therapy will likely rely on evidence-based medicine to integrate all of the available evidence to delineate the most efficacious treatment option for the patient. To undertake evidence-based medicine through use of targeted therapy regimens, identification of the specific underlying causative mutation(s) driving growth and progression of a patient's tumor is imperative. Although molecular subtyping is important for planning and treatment, intraclonal genetic diversity has been recently highlighted as having significant implications for biopsy-based prognosis. Overall, delineation of the clonal architecture of a patient's cancer and how this will impact on the selection of the most efficacious therapy remain a topic of intense interest.
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38
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Biodegradable human serum albumin nanoparticles as contrast agents for the detection of hepatocellular carcinoma by magnetic resonance imaging. Eur J Pharm Biopharm 2014; 87:132-41. [DOI: 10.1016/j.ejpb.2013.12.010] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2013] [Accepted: 12/12/2013] [Indexed: 11/23/2022]
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Lund-Andersen C, Patzke S, Nähse-Kumpf V, Syljuåsen RG. PLK1-inhibition can cause radiosensitization or radioresistance dependent on the treatment schedule. Radiother Oncol 2014; 110:355-61. [PMID: 24502970 DOI: 10.1016/j.radonc.2013.12.014] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2013] [Revised: 12/09/2013] [Accepted: 12/16/2013] [Indexed: 11/28/2022]
Abstract
BACKGROUND AND PURPOSE PLK1-inhibitors are emerging as new potential anticancer agents. It is therefore important to explore the combined effects of PLK1-inhibitors with conventional therapies. Based on the functional roles of PLK1 in both mitosis and the G2 checkpoint, we hypothesized that the treatment schedule might influence the combined effects of PLK1-inhibiton and radiation. MATERIALS AND METHODS Human osteosarcoma U2OS and colorectal cancer HT29 and SW620 cells were treated with the PLK1-inhibitor BI2536 before or after X-ray irradiation (0-6 Gy). Clonogenic assays, flow cytometry, immunofluorescence and mCherry-53BP1 time-lapse imaging were used to assay cell survival, cell cycle progression and DNA damage repair. RESULTS Treatment with the PLK1-inhibitor for 24h before radiation caused cells to accumulate in G2/M and resulted in increased radiosensitivity. In contrast, the cytotoxic effects of the two treatments were less-than-additive when cells were treated with the PLK1-inhibitor for 24h after radiation. This resistance was associated with a prolonged G2 checkpoint causing enhanced repair of the radiation-induced damage and decreased BI2536-mediated mitotic damage. CONCLUSIONS PLK1-inhibitors need to be administrated several hours before radiation to achieve radiosensitization. If PLK1-inhibitors are given after radiation, cell killing is reduced due to the prolonged G2 checkpoint.
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Affiliation(s)
- Christin Lund-Andersen
- Department of Radiation Biology, Institute for Cancer Research, Norwegian Radium Hospital, Oslo University Hospital, Norway
| | - Sebastian Patzke
- Department of Radiation Biology, Institute for Cancer Research, Norwegian Radium Hospital, Oslo University Hospital, Norway
| | - Viola Nähse-Kumpf
- Department of Radiation Biology, Institute for Cancer Research, Norwegian Radium Hospital, Oslo University Hospital, Norway
| | - Randi G Syljuåsen
- Department of Radiation Biology, Institute for Cancer Research, Norwegian Radium Hospital, Oslo University Hospital, Norway.
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40
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Wu CP, Hsiao SH, Sim HM, Luo SY, Tuo WC, Cheng HW, Li YQ, Huang YH, Ambudkar SV. Human ABCB1 (P-glycoprotein) and ABCG2 mediate resistance to BI 2536, a potent and selective inhibitor of Polo-like kinase 1. Biochem Pharmacol 2013; 86:904-13. [PMID: 23962445 PMCID: PMC3791609 DOI: 10.1016/j.bcp.2013.08.004] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2013] [Revised: 08/03/2013] [Accepted: 08/07/2013] [Indexed: 11/29/2022]
Abstract
The overexpression of the serine/threonine specific Polo-like kinase 1 (Plk1) has been detected in various types of cancer, and thus has fast become an attractive therapeutic target for cancer therapy. BI 2536 is the first selective inhibitor of Plk1 that inhibits cancer cell proliferation by promoting G2/M cell cycle arrest at nanomolar concentrations. Unfortunately, alike most chemotherapeutic agents, the development of acquired resistance to BI 2536 is prone to present a significant therapeutic challenge. One of the most common mechanisms for acquired resistance in cancer chemotherapy is associated with the overexpression of ATP-binding cassette (ABC) transporters ABCB1, ABCC1 and ABCG2. Here, we discovered that overexpressing of either ABCB1 or ABCG2 is a novel mechanism of acquired resistance to BI 2536 in human cancer cells. Moreover, BI 2536 stimulates the ATPase activity of both ABCB1 and ABCG2 in a concentration-dependent manner, and inhibits the drug substrate transport mediated by these transporters. More significantly, the reduced chemosensitivity and BI 2536-mediated G2/M cell cycle arrest in cancer cells overexpressing either ABCB1 or ABCG2 can be significantly restored in the presence of selective inhibitor or other chemotherapeutic agents that also interact with ABCB1 and ABCG2, such as tyrosine kinase inhibitors nilotinib and lapatinib. Taken together, our findings indicate that in order to circumvent ABCB1 or ABCG2-mediated acquired resistance to BI 2536, a combined regimen of BI 2536 and inhibitors or clinically active drugs that potently inhibit the function of ABC drug transporters, should be considered as a potential treatment strategy in the clinic.
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MESH Headings
- ATP Binding Cassette Transporter, Subfamily B
- ATP Binding Cassette Transporter, Subfamily B, Member 1/metabolism
- ATP Binding Cassette Transporter, Subfamily G, Member 2
- ATP-Binding Cassette Transporters/metabolism
- Animals
- Biological Transport/drug effects
- Cell Cycle Proteins/antagonists & inhibitors
- Cell Line, Tumor
- Dose-Response Relationship, Drug
- Drug Resistance, Multiple/drug effects
- Drug Resistance, Neoplasm/drug effects
- Drug Resistance, Neoplasm/physiology
- G2 Phase Cell Cycle Checkpoints/drug effects
- Humans
- Lapatinib
- Mice
- Neoplasm Proteins/metabolism
- Protein Kinase Inhibitors/pharmacology
- Protein Serine-Threonine Kinases/antagonists & inhibitors
- Proto-Oncogene Proteins/antagonists & inhibitors
- Pteridines/pharmacology
- Pyrimidines/pharmacology
- Quinazolines/pharmacology
- Polo-Like Kinase 1
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Affiliation(s)
- Chung-Pu Wu
- Department of Physiology and Pharmacology, College of Medicine, Chang Gung University, Tao-Yuan 333, Taiwan; Graduate Institute of Biomedical Sciences, College of Medicine, Chang Gung University, Tao-Yuan 333, Taiwan; Molecular Medicine Research Center, College of Medicine, Chang Gung University, Tao-Yuan 333, Taiwan.
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41
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Marzo I, Naval J. Antimitotic drugs in cancer chemotherapy: promises and pitfalls. Biochem Pharmacol 2013; 86:703-10. [PMID: 23886991 DOI: 10.1016/j.bcp.2013.07.010] [Citation(s) in RCA: 64] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2013] [Revised: 07/11/2013] [Accepted: 07/11/2013] [Indexed: 11/19/2022]
Abstract
Cancer cells usually display higher proliferation rates than normal cells. Some currently used antitumor drugs, such as vinca alkaloids and taxanes, act by targeting microtubules and inhibiting mitosis. In the last years, different mitotic regulators have been proposed as drug target candidates for antitumor therapies. In particular, inhibitors of Cdks, Chks, Aurora kinase and Polo-like kinase have been synthesized and evaluated in vitro and in animal models and some of them have reached clinical trials. However, to date, none of these inhibitors has been still approved for use in chemotherapy regimes. We will discuss here the most recent preclinical information on those new antimitotic drugs, as well as the possible molecular bases underlying their lack of clinical efficiency. Also, advances in the identification of other mitosis-related targets will be also summarized.
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Affiliation(s)
- Isabel Marzo
- Departamento de Bioquimica y Biologia Molecular y Celular, Facultad de Ciencias, Universidad de Zaragoza, Spain.
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42
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Overcoming intratumor heterogeneity of polygenic cancer drug resistance with improved biomarker integration. Neoplasia 2013; 14:1278-89. [PMID: 23308059 DOI: 10.1593/neo.122096] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2012] [Revised: 12/11/2012] [Accepted: 12/11/2012] [Indexed: 12/14/2022] Open
Abstract
Improvements in technology and resources are helping to advance our understanding of cancer-initiating events as well as factors involved with tumor progression, adaptation, and evasion of therapy. Tumors are well known to contain diverse cell populations and intratumor heterogeneity affords neoplasms with a diverse set of biologic characteristics that can be used to evolve and adapt. Intratumor heterogeneity has emerged as a major hindrance to improving cancer patient care. Polygenic cancer drug resistance necessitates reconsidering drug designs to include polypharmacology in pursuit of novel combinatorial agents having multitarget activity to overcome the diverse and compensatory signaling pathways in which cancer cells use to survive and evade therapy. Advances will require integration of different biomarkers such as genomics and imaging to provide for more adequate elucidation of the spatially varying location, type, and extent of diverse intratumor signaling molecules to provide for a rationale-based personalized cancer medicine strategy.
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Brassesco MS, Pezuk JA, Morales AG, de Oliveira JC, Roberto GM, da Silva GN, Francisco de Oliveira H, Scrideli CA, Tone LG. In vitro targeting of Polo-like kinase 1 in bladder carcinoma: comparative effects of four potent inhibitors. Cancer Biol Ther 2013; 14:648-57. [PMID: 23792639 PMCID: PMC3742494 DOI: 10.4161/cbt.25087] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2012] [Revised: 04/16/2013] [Accepted: 05/19/2013] [Indexed: 01/21/2023] Open
Abstract
Despite the improvements in neoadjuvant chemotherapy, the outcome of patients with advanced bladder cancer has changed very little over the past 30 years. In the present study we tested and compared the in vitro antitumor activities of four different inhibitors of Polo-like kinase 1 (PLK1) (BI 2536, BI 6727, GW843682X, and GSK461364), against 3 bladder carcinoma cell lines RT4, 5637 and T24. The impact on radiosensitivity and drug interactions in simultaneous treatments with cisplatin, methotrexate, and doxorubicin were also investigated. Our results showed that PLK1 inhibition prevented cell proliferation and clonogenicity, causing significant inhibition of invasion of tumor cells, though modest differences were observed between drugs. Moreover, all PLK1 inhibitors induced G 2/M arrest, with the subsequent induction of death in all 3 cell lines. Drug interactions studies showed auspicious results for all PLK1 inhibitors when combined with the commonly used cisplatin and methotrexate, though combinations with doxorubicin showed mostly antagonistic effects. Comparably, the four PLK1 inhibitors efficiently sensitized cells to ionizing radiation. Our findings demonstrate that irrespective of the inhibitor used, the pharmacological inhibition of PLK1 constrains bladder cancer growth and dissemination, providing new opportunities for future therapeutic intervention. However, further laboratorial and pre-clinical tests are still needed to corroborate the usefulness of using them in combination with other commonly used chemotherapeutic drugs.
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Affiliation(s)
- María Sol Brassesco
- Division of Pediatric Oncology, Department of Pediatrics, University of São Paulo, São Paulo, Brazil.
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Screening compounds with a novel high-throughput ABCB1-mediated efflux assay identifies drugs with known therapeutic targets at risk for multidrug resistance interference. PLoS One 2013; 8:e60334. [PMID: 23593196 PMCID: PMC3622673 DOI: 10.1371/journal.pone.0060334] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2012] [Accepted: 02/25/2013] [Indexed: 11/19/2022] Open
Abstract
ABCB1, also known as P-glycoprotein (P-gp) or multidrug resistance protein 1 (MDR1), is a membrane-associated multidrug transporter of the ATP-binding cassette (ABC) transporter family. It is one of the most widely studied transporters that enable cancer cells to develop drug resistance. Reliable high-throughput assays that can identify compounds that interact with ABCB1 are crucial for developing new therapeutic drugs. A high-throughput assay for measuring ABCB1-mediated calcein AM efflux was developed using a fluorescent and phase-contrast live cell imaging system. This assay demonstrated the time- and dose-dependent accumulation of fluorescent calcein in ABCB1-overexpressing KB-V1 cells. Validation of the assay was performed with known ABCB1 inhibitors, XR9576, verapamil, and cyclosporin A, all of which displayed dose-dependent inhibition of ABCB1-mediated calcein AM efflux in this assay. Phase-contrast and fluorescent images taken by the imaging system provided additional opportunities for evaluating compounds that are cytotoxic or produce false positive signals. Compounds with known therapeutic targets and a kinase inhibitor library were screened. The assay identified multiple agents as inhibitors of ABCB1-mediated efflux and is highly reproducible. Among compounds identified as ABCB1 inhibitors, BEZ235, BI 2536, IKK 16, and ispinesib were further evaluated. The four compounds inhibited calcein AM efflux in a dose-dependent manner and were also active in the flow cytometry-based calcein AM efflux assay. BEZ235, BI 2536, and IKK 16 also successfully inhibited the labeling of ABCB1 with radiolabeled photoaffinity substrate [125I]iodoarylazidoprazosin. Inhibition of ABCB1 with XR9576 and cyclosporin A enhanced the cytotoxicity of BI 2536 to ABCB1-overexpressing cancer cells, HCT-15-Pgp, and decreased the IC50 value of BI 2536 by several orders of magnitude. This efficient, reliable, and simple high-throughput assay has identified ABCB1 substrates/inhibitors that may influence drug potency or drug-drug interactions and predict multidrug resistance in clinical treatment.
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