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van Stuijvenberg J, Proksch P, Fritz G. Targeting the DNA damage response (DDR) by natural compounds. Bioorg Med Chem 2020; 28:115279. [PMID: 31980363 DOI: 10.1016/j.bmc.2019.115279] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2019] [Revised: 12/09/2019] [Accepted: 12/15/2019] [Indexed: 12/31/2022]
Abstract
Natural compounds (NC) are an important source of anticancer drugs. The genomic DNA of tumor cells is a major target of conventional anticancer therapeutics (cAT). DNA damage elicits a complex stress response programme termed DNA damage response (DDR), with the PI3-like kinase ATM and ATR being the key regulators. Since the DDR coordinates mechanisms of DNA repair and apoptosis, hence regulating the balance between death and survival, it is an attractive target of novel anticancer strategies. The aim of the study was to identify natural compounds derived from endophytic fungi, lichens, marine sponges or plants that interfere with mechanisms of the DDR. To this end, the cytotoxic and DDR modulating potency of 296 natural compounds, used alone or in combination with the cAT cisplatin (Cis) and doxorubicin (Doxo) was investigated by fluorescence-based analysis of the ATM/ATR-catalyzed S139 phosphorylation of histone 2AX (γH2AX), a surrogate marker of DNA damage-triggered DDR. After initial screening, a total of ten natural compounds were identified that were toxic in pancreatic carcinoma cells and activated the DDR on their own and/or promoted the DDR if used in combination with cAT. Their mode of action was shown to be independent of drug transport mechanisms. Based on their chemical structures, DDR modulatory activity and published data we suggest the marine NC 5-epi-nakijiquinone Q and 5-epi-ilimaquinone as well as the fungal compound secalonic acid F as most promising NC-based drug candidates for future synthesis of DDR-modulating chemical derivatives and their preclinical in vitro and in vivo testing.
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Affiliation(s)
- Jana van Stuijvenberg
- Institute of Toxicology, Medical Faculty, Heinrich-Heine University Düsseldorf, Moorenstrasse 5, 40225 Düsseldorf, Germany
| | - Peter Proksch
- Institute of Pharmaceutical Biology and Biotechnology, Heinrich-Heine University Düsseldorf, Universitätsstrasse 1, 40225 Düsseldorf, Germany
| | - Gerhard Fritz
- Institute of Toxicology, Medical Faculty, Heinrich-Heine University Düsseldorf, Moorenstrasse 5, 40225 Düsseldorf, Germany.
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52
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Gomez-Zepeda D, Taghi M, Scherrmann JM, Decleves X, Menet MC. ABC Transporters at the Blood-Brain Interfaces, Their Study Models, and Drug Delivery Implications in Gliomas. Pharmaceutics 2019; 12:pharmaceutics12010020. [PMID: 31878061 PMCID: PMC7022905 DOI: 10.3390/pharmaceutics12010020] [Citation(s) in RCA: 64] [Impact Index Per Article: 12.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2019] [Revised: 12/13/2019] [Accepted: 12/20/2019] [Indexed: 12/22/2022] Open
Abstract
Drug delivery into the brain is regulated by the blood-brain interfaces. The blood-brain barrier (BBB), the blood-cerebrospinal fluid barrier (BCSFB), and the blood-arachnoid barrier (BAB) regulate the exchange of substances between the blood and brain parenchyma. These selective barriers present a high impermeability to most substances, with the selective transport of nutrients and transporters preventing the entry and accumulation of possibly toxic molecules, comprising many therapeutic drugs. Transporters of the ATP-binding cassette (ABC) superfamily have an important role in drug delivery, because they extrude a broad molecular diversity of xenobiotics, including several anticancer drugs, preventing their entry into the brain. Gliomas are the most common primary tumors diagnosed in adults, which are often characterized by a poor prognosis, notably in the case of high-grade gliomas. Therapeutic treatments frequently fail due to the difficulty of delivering drugs through the brain barriers, adding to diverse mechanisms developed by the cancer, including the overexpression or expression de novo of ABC transporters in tumoral cells and/or in the endothelial cells forming the blood-brain tumor barrier (BBTB). Many models have been developed to study the phenotype, molecular characteristics, and function of the blood-brain interfaces as well as to evaluate drug permeability into the brain. These include in vitro, in vivo, and in silico models, which together can help us to better understand their implication in drug resistance and to develop new therapeutics or delivery strategies to improve the treatment of pathologies of the central nervous system (CNS). In this review, we present the principal characteristics of the blood-brain interfaces; then, we focus on the ABC transporters present on them and their implication in drug delivery; next, we present some of the most important models used for the study of drug transport; finally, we summarize the implication of ABC transporters in glioma and the BBTB in drug resistance and the strategies to improve the delivery of CNS anticancer drugs.
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Affiliation(s)
- David Gomez-Zepeda
- Inserm, UMR-S 1144, Optimisation Thérapeutique en Neuropsychopharmacologie, 75006 Paris, France; (M.T.); (J.-M.S.); (X.D.)
- Sorbonne Paris Cité, Université Paris Descartes, 75006 Paris, France
- Sorbonne Paris Cité, Université Paris Diderot, 75013 Paris, France
- Correspondence: (D.G.-Z.); (M.-C.M.)
| | - Méryam Taghi
- Inserm, UMR-S 1144, Optimisation Thérapeutique en Neuropsychopharmacologie, 75006 Paris, France; (M.T.); (J.-M.S.); (X.D.)
- Sorbonne Paris Cité, Université Paris Descartes, 75006 Paris, France
- Sorbonne Paris Cité, Université Paris Diderot, 75013 Paris, France
| | - Jean-Michel Scherrmann
- Inserm, UMR-S 1144, Optimisation Thérapeutique en Neuropsychopharmacologie, 75006 Paris, France; (M.T.); (J.-M.S.); (X.D.)
- Sorbonne Paris Cité, Université Paris Descartes, 75006 Paris, France
- Sorbonne Paris Cité, Université Paris Diderot, 75013 Paris, France
| | - Xavier Decleves
- Inserm, UMR-S 1144, Optimisation Thérapeutique en Neuropsychopharmacologie, 75006 Paris, France; (M.T.); (J.-M.S.); (X.D.)
- Sorbonne Paris Cité, Université Paris Descartes, 75006 Paris, France
- Sorbonne Paris Cité, Université Paris Diderot, 75013 Paris, France
- UF Biologie du médicament et toxicologie, Hôpital Cochin, AP HP, 75006 Paris, France
| | - Marie-Claude Menet
- Inserm, UMR-S 1144, Optimisation Thérapeutique en Neuropsychopharmacologie, 75006 Paris, France; (M.T.); (J.-M.S.); (X.D.)
- Sorbonne Paris Cité, Université Paris Descartes, 75006 Paris, France
- Sorbonne Paris Cité, Université Paris Diderot, 75013 Paris, France
- UF Hormonologie adulte, Hôpital Cochin, AP HP, 75006 Paris, France
- Correspondence: (D.G.-Z.); (M.-C.M.)
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53
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Park SY, Lee DG, Jo A, Choi H, Lee JE, Jeong AJ, Leem SH, Jun W, Shim S, Ye SK, Min JK, Chung JW. Extracellular Microenvironmental Change by B16F10 Melanoma-derived Proteins Induces Cancer Stem-like Cell Properties from NIH3T3 Cells. Sci Rep 2019; 9:16757. [PMID: 31727938 PMCID: PMC6856526 DOI: 10.1038/s41598-019-53326-8] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2018] [Accepted: 10/30/2019] [Indexed: 12/20/2022] Open
Abstract
Cancer stem-like cells (CSCs) can generate solid tumors through the properties of stem cells such as self-renewal and differentiation and they cause drug resistance, metastasis and recurrence. Therefore, establishing CSC lines is necessary to conduct various studies such as on the identification of CSC origin and specific targeted therapies. In this study, we stimulated NIH3T3 fibroblasts to exhibit the characteristics of CSCs using the whole protein lysates of B16F10 melanoma cells. As a result, we induced colony formation that displayed self-renewal and differentiation capacities through anchorage-independent culture and re-attached culture. Moreover, colonies showed drug resistance by being maintained in the G0/G1 state. Colonies expressed various CSC markers and displayed high-level drug efflux capacity. Additionally, colonies clearly demonstrated tumorigenic ability by forming a solid tumor in vivo. These results show that proteins of cancer cells could transform normal cells into CSCs by increasing expression of CSC markers. This study argues the tremendous importance of the extracellular microenvironmental effect on the generation of CSCs. It also provides a simple experimental method for deriving CSCs that could be based on the development of targeted therapy techniques.
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Affiliation(s)
- Soon Yong Park
- Department of Biological Science, Dong-A University, Busan, 49315, Republic of Korea
| | - Dong Gwang Lee
- Biotherapeutics Translational Research Center, Korea Research Institute of Bioscience and Biotechnology, Daejeon, 34141, Republic of Korea.,Department of Biomolecular Science, University of Science & Technology, Daejeon, 34141, Republic of Korea
| | - Ara Jo
- Department of Biological Science, Dong-A University, Busan, 49315, Republic of Korea
| | - Hyeongrok Choi
- Department of Biological Science, Dong-A University, Busan, 49315, Republic of Korea
| | - Joo Eon Lee
- Division of Drug Development and Optimization, KBIO-New Drug Development Center, Cheongju, 28160, Republic of Korea
| | - Ae Jin Jeong
- Department of Pharmacology and Biomedical Sciences, College of Medicine, Seoul National University, Seoul, 03080, Republic of Korea
| | - Sun-Hee Leem
- Department of Biological Science, Dong-A University, Busan, 49315, Republic of Korea
| | - Woojin Jun
- Department of Food and Nutrition, Chonnam National University, Gwangju, 61186, Republic of Korea
| | - Sangin Shim
- Department of Agronomy, Gyeongsang National University, Jinju, 52828, Republic of Korea
| | - Sang-Kyu Ye
- Department of Pharmacology and Biomedical Sciences, College of Medicine, Seoul National University, Seoul, 03080, Republic of Korea
| | - Jeong-Ki Min
- Biotherapeutics Translational Research Center, Korea Research Institute of Bioscience and Biotechnology, Daejeon, 34141, Republic of Korea. .,Department of Biomolecular Science, University of Science & Technology, Daejeon, 34141, Republic of Korea.
| | - Jin Woong Chung
- Department of Biological Science, Dong-A University, Busan, 49315, Republic of Korea.
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54
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Design, synthesis and biological evaluation of stereo- and regioisomers of amino aryl esters as multidrug resistance (MDR) reversers. Eur J Med Chem 2019; 182:111655. [DOI: 10.1016/j.ejmech.2019.111655] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2019] [Revised: 08/26/2019] [Accepted: 08/27/2019] [Indexed: 12/23/2022]
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55
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Khot MI, Downey CL, Armstrong G, Svavarsdottir HS, Jarral F, Andrew H, Jayne DG. The role of ABCG2 in modulating responses to anti-cancer photodynamic therapy. Photodiagnosis Photodyn Ther 2019; 29:101579. [PMID: 31639455 DOI: 10.1016/j.pdpdt.2019.10.014] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2019] [Revised: 10/03/2019] [Accepted: 10/11/2019] [Indexed: 01/10/2023]
Abstract
The ATP-binding cassette (ABC) superfamily G member 2 (ABCG2) transmembrane protein transporter is known for conferring resistance to treatment in cancers. Photodynamic therapy (PDT) is a promising anti-cancer method involving the use of light-activated photosensitisers to precisely induce oxidative stress and cell death in cancers. ABCG2 can efflux photosensitisers from out of cells, reducing the capacity of PDT and limiting the efficacy of treatment. Many studies have attempted to elucidate the relationship between the expression of ABCG2 in cancers, its effect on the cellular retention of photosensitisers and its impact on PDT. This review looks at the studies which investigate the effect of ABCG2 on a range of different photosensitisers in different pre-clinical models of cancer. This work also evaluates the approaches that are being investigated to address the role of ABCG2 in PDT with an outlook on potential clinical validation.
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Affiliation(s)
- M Ibrahim Khot
- School of Medicine, St James's University Hospital, University of Leeds, Leeds, UK.
| | - Candice L Downey
- School of Medicine, St James's University Hospital, University of Leeds, Leeds, UK
| | - Gemma Armstrong
- School of Medicine, St James's University Hospital, University of Leeds, Leeds, UK
| | | | - Fazain Jarral
- School of Medicine, St James's University Hospital, University of Leeds, Leeds, UK
| | - Helen Andrew
- School of Medicine, St James's University Hospital, University of Leeds, Leeds, UK
| | - David G Jayne
- School of Medicine, St James's University Hospital, University of Leeds, Leeds, UK
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56
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Zhu X, Wong ILK, Chan KF, Cui J, Law MC, Chong TC, Hu X, Chow LMC, Chan TH. Triazole Bridged Flavonoid Dimers as Potent, Nontoxic, and Highly Selective Breast Cancer Resistance Protein (BCRP/ABCG2) Inhibitors. J Med Chem 2019; 62:8578-8608. [PMID: 31465686 DOI: 10.1021/acs.jmedchem.9b00963] [Citation(s) in RCA: 25] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
The present work describes the syntheses of diverse triazole bridged flavonoid dimers and identifies potent, nontoxic, and highly selective BCRP inhibitors. A homodimer, Ac22(Az8)2, with m-methoxycarbonylbenzyloxy substitution at C-3 of the flavone moieties and a bis-triazole-containing linker (21 atoms between the two flavones) showed low toxicity (IC50 toward L929, 3T3, and HFF-1 > 100 μM), potent BCRP-inhibitory activity (EC50 = 1-2 nM), and high BCRP selectivity (BCRP selectivity over MRP1 and P-gp > 455-909). Ac22(Az8)2 inhibits BCRP-ATPase activity, blocks the drug efflux activity of BCRP, elevates the intracellular drug accumulation, and finally restores the drug sensitivity of BCRP-overexpressing cells. It does not down-regulate the surface BCRP protein expression to enhance the drug retention. Therefore, Ac22(Az8)2 and similar flavonoid dimers appear to be promising candidates for further development into combination therapy to overcome MDR cancers with BCRP overexpression.
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Affiliation(s)
- Xuezhen Zhu
- Department of Applied Biology and Chemical Technology and State Key Laboratory of Chemical Biology and Drug Discovery , Hong Kong Polytechnic University , Hong Kong SAR, China
| | - Iris L K Wong
- Department of Applied Biology and Chemical Technology and State Key Laboratory of Chemical Biology and Drug Discovery , Hong Kong Polytechnic University , Hong Kong SAR, China
| | - Kin-Fai Chan
- Department of Applied Biology and Chemical Technology and State Key Laboratory of Chemical Biology and Drug Discovery , Hong Kong Polytechnic University , Hong Kong SAR, China
| | - Jiahua Cui
- School of Environmental Science and Engineering , Shanghai Jiao Tong University , Shanghai 200240 , China
| | - Man Chun Law
- Department of Applied Biology and Chemical Technology and State Key Laboratory of Chemical Biology and Drug Discovery , Hong Kong Polytechnic University , Hong Kong SAR, China
| | - Tsz Cheung Chong
- Department of Applied Biology and Chemical Technology and State Key Laboratory of Chemical Biology and Drug Discovery , Hong Kong Polytechnic University , Hong Kong SAR, China
| | - Xuesen Hu
- Department of Applied Biology and Chemical Technology and State Key Laboratory of Chemical Biology and Drug Discovery , Hong Kong Polytechnic University , Hong Kong SAR, China
| | - Larry M C Chow
- Department of Applied Biology and Chemical Technology and State Key Laboratory of Chemical Biology and Drug Discovery , Hong Kong Polytechnic University , Hong Kong SAR, China
| | - Tak Hang Chan
- Department of Applied Biology and Chemical Technology and State Key Laboratory of Chemical Biology and Drug Discovery , Hong Kong Polytechnic University , Hong Kong SAR, China.,Department of Chemistry , McGill University , Montreal , Quebec H3A 2K6 , Canada
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57
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Li R, Xu T, Wang H, Wu N, Liu F, Jia X, Mi J, Lv J, Gao H. Dysregulation of the miR-325-3p/DPAGT1 axis supports HBV-positive HCC chemoresistance. Biochem Biophys Res Commun 2019; 519:358-365. [PMID: 31519321 DOI: 10.1016/j.bbrc.2019.08.116] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2019] [Accepted: 08/22/2019] [Indexed: 01/30/2023]
Abstract
BACKGROUND Chemotherapeutic resistance in hepatitis B virus (HBV)-positive hepatocellular carcinoma (HCC) patients is an unfortunate side effect of standard chemotherapy. This situation necessitates a better understanding of the molecular pathways underlying HBV + HCC chemoresistance in order to aid the development of novel chemotherapeutic targets. METHODS We generated two doxorubicin (DOX)-resistant HBV + HCC sublines HepG2.2.15 and Huh7-1.3. qRT-PCR was used to evaluate dysregulation in hexosamine pathway genes in chemosensitive and chemoresistant HBV + HCC cell lines in vitro. Western blots, luciferase reporter assays, and in vivo xenograft tumor studies were conducted to reveal the role of the miRNA-325-3p/DPAGT1 axis in HBV + HCC chemoresistance. RESULTS The hexosamine pathway gene dolichyl-phosphate N-acetylglucosamine phosphotransferase 1 (DPAGT1) was found to be upregulated in both DOX-resistant cell lines. Enhancing DPAGT1 activity significantly improved the survival of DOX-resistant cells. Silencing or pharmacological inhibition of DPAGT1 inhibited xenograft tumor growth under DOX-treated conditions. DPAGT1 upregulation was associated with higher levels of stemness-related markers and ATP-binding cassette (ABC) drug efflux transporters in DOX-resistant cell lines. miR-325-3p was found to negatively modulate DPAGT1 expression and phenocopied the effects of DPAGT1 silencing in vitro and in vivo. In HBV + HCC patients treated with transarterial chemoembolization (TACE), high and low levels of tumor DPAGT1 and miR-325-3p expression, respectively, were associated with a poor chemotherapeutic response. CONCLUSIONS Our findings provide novel insights into the role of miR-325-3p/DPAGT1 axis dysregulation in supporting HBV + HCC chemoresistance.
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Affiliation(s)
- Rui Li
- Department of Immunology, Anhui Key Laboratory of Infection and Immunity at Bengbu Medical College, Bengbu, Anhui, China
| | - Tao Xu
- Department of Laboratory Medicine, Bengbu Medical College, Bengbu, Anhui, China
| | - Hongtao Wang
- Department of Immunology, Anhui Key Laboratory of Infection and Immunity at Bengbu Medical College, Bengbu, Anhui, China
| | - Nan Wu
- Anhui Clinical and Preclinical Key Laboratory of Respiratory Disease, Department of Respiration, First Affiliated Hospital, Bengbu Medical College, China
| | - Fei Liu
- Anhui Clinical and Preclinical Key Laboratory of Respiratory Disease, Department of Respiration, First Affiliated Hospital, Bengbu Medical College, China
| | - Xianjie Jia
- Department of Epidemiology, School of Public Health, Bengbu Medical College, Bengbu, Anhui, China
| | - Jing Mi
- Department of Epidemiology, School of Public Health, Bengbu Medical College, Bengbu, Anhui, China
| | - Jingzhu Lv
- Department of Biochemistry and Molecular Biology, Bengbu Medical College, Bengbu, Anhui, China.
| | - Huaiquan Gao
- Department of Epidemiology, School of Public Health, Bengbu Medical College, Bengbu, Anhui, China.
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58
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Scimeca M, Urbano N, Bonfiglio R, Duggento A, Toschi N, Schillaci O, Bonanno E. Novel insights into breast cancer progression and metastasis: A multidisciplinary opportunity to transition from biology to clinical oncology. Biochim Biophys Acta Rev Cancer 2019; 1872:138-148. [PMID: 31348975 DOI: 10.1016/j.bbcan.2019.07.002] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2019] [Revised: 06/25/2019] [Accepted: 07/15/2019] [Indexed: 12/11/2022]
Abstract
According to the most recent epidemiological studies, breast cancer shows the highest incidence and the second leading cause of death in women. Cancer progression and metastasis are the main events related to poor survival of breast cancer patients. This can be explained by the presence of highly resistant to chemo- and radiotherapy stem cells in many breast tumor tissues. In this context, numerous studies highlighted the possible involvement of epithelial to mesenchymal transition phenomenon as biological program to generate cancer stem cells, and thus participate to both metastatic and drug resistance process. Therefore, the comprehension of mechanisms (both cellular and molecular) involved in breast cancer occurrence and progression can lay the foundation for the development of new diagnostic and therapeutical protocols. In this review, we reported the most important findings in the field of breast cancer highlighting the most recent data concerning breast tumor biology, diagnosis and therapy.
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Affiliation(s)
- Manuel Scimeca
- Department of Biomedicine and Prevention, University of Rome "Tor Vergata", Via Montpellier 1, Rome 00133, Italy; San Raffaele University, Via di Val Cannuta 247, 00166 Rome, Italy; Fondazione Umberto Veronesi (FUV), Piazza Velasca 5, 20122 Milano (Mi), Italy.
| | | | - Rita Bonfiglio
- Department of Experimental Medicine, University "Tor Vergata", Via Montpellier 1, Rome 00133, Italy
| | - Andrea Duggento
- Department of Biomedicine and Prevention, University of Rome "Tor Vergata", Via Montpellier 1, Rome 00133, Italy
| | - Nicola Toschi
- Department of Biomedicine and Prevention, University of Rome "Tor Vergata", Via Montpellier 1, Rome 00133, Italy; Department of Radiology, Athinoula A. Martinos Center for Biomedical Imaging and Harvard Medical School, Massachusetts General Hospital, Boston, MA, United States
| | - Orazio Schillaci
- Department of Biomedicine and Prevention, University of Rome "Tor Vergata", Via Montpellier 1, Rome 00133, Italy; IRCCS Neuromed, Pozzilli, Italy
| | - Elena Bonanno
- Department of Experimental Medicine, University "Tor Vergata", Via Montpellier 1, Rome 00133, Italy; Neuromed Group, "Diagnostica Medica" and "Villa dei Platani", Avellino, Italy
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59
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Marzagalli M, Raimondi M, Fontana F, Montagnani Marelli M, Moretti RM, Limonta P. Cellular and molecular biology of cancer stem cells in melanoma: Possible therapeutic implications. Semin Cancer Biol 2019; 59:221-235. [PMID: 31265892 DOI: 10.1016/j.semcancer.2019.06.019] [Citation(s) in RCA: 37] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2019] [Accepted: 06/27/2019] [Indexed: 01/17/2023]
Abstract
Malignant melanoma is a tumor characterized by a very high level of heterogeneity, responsible for its malignant behavior and ability to escape from standard therapies. In this review we highlight the molecular and biological features of the subpopulation of cancer stem cells (CSCs), well known to be characterized by self-renewal properties, deeply involved in triggering the processes of tumor generation, metastasis, progression and drug resistance. From the molecular point of view, melanoma CSCs are identified and characterized by the expression of stemness markers, such as surface markers, ATP-binding cassette (ABC) transporters, embryonic stem cells and intracellular markers. These cells are endowed with different functional features. In particular, they play pivotal roles in the processes of tumor dissemination, epithelial-to-mesenchymal transition (EMT) and angiogenesis, mediated by specific intracellular signaling pathways; moreover, they are characterized by a unique metabolic reprogramming. As reported for other types of tumors, the CSCs subpopulation in melanoma is also characterized by a low immunogenic profile as well as by the ability to escape the immune system, through the expression of a negative modulation of T cell functions and the secretion of immunosuppressive factors. These biological features allow melanoma CSCs to escape standard treatments, thus being deeply involved in tumor relapse. Targeting the CSCs subpopulation is now considered an attractive treatment strategy; in particular, combination treatments, based on both CSCs-targeting and standard drugs, will likely increase the therapeutic options for melanoma patients. The characterization of CSCs in liquid biopsies from single patients will pave the way towards precision medicine.
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Affiliation(s)
- Monica Marzagalli
- Department of Pharmacological and Biomolecular Sciences, University of Milano, Milano, Italy
| | - Michela Raimondi
- Department of Pharmacological and Biomolecular Sciences, University of Milano, Milano, Italy
| | - Fabrizio Fontana
- Department of Pharmacological and Biomolecular Sciences, University of Milano, Milano, Italy
| | | | - Roberta M Moretti
- Department of Pharmacological and Biomolecular Sciences, University of Milano, Milano, Italy
| | - Patrizia Limonta
- Department of Pharmacological and Biomolecular Sciences, University of Milano, Milano, Italy.
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60
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Abstract
Cancer is the second leading cause of death in the US. Current major treatments for cancer management include surgery, cytotoxic chemotherapy, targeted therapy, radiation therapy, endocrine therapy and immunotherapy. Despite the endeavors and achievements made in treating cancers during the past decades, resistance to classical chemotherapeutic agents and/or novel targeted drugs continues to be a major problem in cancer therapies. Drug resistance, either existing before treatment (intrinsic) or generated after therapy (acquired), is responsible for most relapses of cancer, one of the major causes of death of the disease. Heterogeneity among patients and tumors, and the versatility of cancer to circumvent therapies make drug resistance more challenging to deal with. Better understanding the mechanisms of drug resistance is required to provide guidance to future cancer treatment and achieve better outcomes. In this review, intrinsic and acquired resistance will be discussed. In addition, new discoveries in mechanisms of drug resistance will be reviewed. Particularly, we will highlight roles of ATP in drug resistance by discussing recent findings of exceptionally high levels of intratumoral extracellular ATP as well as intracellular ATP internalized from extracellular environment. The complexity of drug resistance development suggests that combinational and personalized therapies, which should take ATP into consideration, might provide better strategies and improved efficacy for fighting drug resistance in cancer.
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Affiliation(s)
- Xuan Wang
- Department of Biological Sciences, Ohio University, Athens, OH 45701, USA.,Interdisciplinary Graduate Program in Molecular and Cellular Biology, Ohio University, Athens, OH 45701, USA.,The Edison Biotechnology Institute, Ohio University, Athens, OH 45701, USA
| | - Haiyun Zhang
- Department of Biological Sciences, Ohio University, Athens, OH 45701, USA.,Interdisciplinary Graduate Program in Molecular and Cellular Biology, Ohio University, Athens, OH 45701, USA.,The Edison Biotechnology Institute, Ohio University, Athens, OH 45701, USA
| | - Xiaozhuo Chen
- Department of Biological Sciences, Ohio University, Athens, OH 45701, USA.,Interdisciplinary Graduate Program in Molecular and Cellular Biology, Ohio University, Athens, OH 45701, USA.,The Edison Biotechnology Institute, Ohio University, Athens, OH 45701, USA.,Department of Chemistry and Biochemistry, Ohio University, Athens, OH 45701, USA.,Department of Biomedical Sciences, Heritage College of Osteopathic, Ohio University, Athens, OH 45701, USA
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61
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Song T, Yang J, Zhou J, Chen Z, Yuan X. A Review of the Mechanisms of Wnt7b in the Process of Malignant Tumor Invasion and Metastasis. INT J PHARMACOL 2019. [DOI: 10.3923/ijp.2019.523.532] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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62
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Salaroglio IC, Mungo E, Gazzano E, Kopecka J, Riganti C. ERK is a Pivotal Player of Chemo-Immune-Resistance in Cancer. Int J Mol Sci 2019; 20:ijms20102505. [PMID: 31117237 PMCID: PMC6566596 DOI: 10.3390/ijms20102505] [Citation(s) in RCA: 83] [Impact Index Per Article: 16.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2019] [Revised: 05/08/2019] [Accepted: 05/18/2019] [Indexed: 12/16/2022] Open
Abstract
The extracellular signal-related kinases (ERKs) act as pleiotropic molecules in tumors, where they activate pro-survival pathways leading to cell proliferation and migration, as well as modulate apoptosis, differentiation, and senescence. Given its central role as sensor of extracellular signals, ERK transduction system is widely exploited by cancer cells subjected to environmental stresses, such as chemotherapy and anti-tumor activity of the host immune system. Aggressive tumors have a tremendous ability to adapt and survive in stressing and unfavorable conditions. The simultaneous resistance to chemotherapy and immune system responses is common, and ERK signaling plays a key role in both types of resistance. In this review, we dissect the main ERK-dependent mechanisms and feedback circuitries that simultaneously determine chemoresistance and immune-resistance/immune-escape in cancer cells. We discuss the pros and cons of targeting ERK signaling to induce chemo-immune-sensitization in refractory tumors.
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Affiliation(s)
- Iris C Salaroglio
- Department of Oncology, University of Torino, via Santena 5/bis, 10126 Torino, Italy.
| | - Eleonora Mungo
- Department of Oncology, University of Torino, via Santena 5/bis, 10126 Torino, Italy.
| | - Elena Gazzano
- Department of Oncology, University of Torino, via Santena 5/bis, 10126 Torino, Italy.
| | - Joanna Kopecka
- Department of Oncology, University of Torino, via Santena 5/bis, 10126 Torino, Italy.
| | - Chiara Riganti
- Department of Oncology, University of Torino, via Santena 5/bis, 10126 Torino, Italy.
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63
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Hashemitabar S, Yazdian-Robati R, Hashemi M, Ramezani M, Abnous K, Kalalinia F. ABCG2 aptamer selectively delivers doxorubicin to drug-resistant breast cancer cells. J Biosci 2019. [DOI: 10.1007/s12038-019-9854-x] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
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64
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Sudhalkar N, Rathod NP, Mathews A, Chopra S, Sriram H, Shrivastava SK, Goda JS. Potential role of cancer stem cells as biomarkers and therapeutic targets in cervical cancer. Cancer Rep (Hoboken) 2019; 2:e1144. [PMID: 32721115 PMCID: PMC7941515 DOI: 10.1002/cnr2.1144] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2018] [Revised: 09/10/2018] [Accepted: 09/11/2018] [Indexed: 12/28/2022] Open
Abstract
BACKGROUND Eradicating cancer stem cells (CSCs) that are termed as the "beating heart" of various malignant tumors, including cervical cancer, holds great importance in cancer therapeutics. CSCs not only confer chemo-radio resistance but also play an important role in tumor metastasis and thereby pose a potential barrier for the cure of cervical cancer. Cervical cancer, a common malignancy among females, is associated with high morbidity and mortality rates, and the study on CSCs residing in the niche is promising. RECENT FINDINGS Biomarker approach to screen the cervical CSCs has gained impetus since the past decade. Progress in identification and characterization of the stem cell biomarkers has led to many insights. For the diagnostic purpose, several biomarkers like viral (HPV16), stem cell markers, transcription factors (viz, SOX2, OCT 4, and c-Myc), and CSC surface markers (viz, ALDH1 and CD44) have been identified. The research so far has been directed to study the CSC stemness and demonstrates various gene expression signatures in cervical CSCs. Such studies hold a potential to improve diagnostic accuracy and predict therapeutic response and clinical outcome in patients. CONCLUSIONS Stem cell biomarkers have been validated and their therapeutic targets are being developed as "strategies to improve therapeutic ratio in personalized medicine." This review gives a brief overview of the cervical CSC biomarkers, their current and future diagnostic, prognostic, and therapeutic potential.
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Affiliation(s)
- Niyati Sudhalkar
- Department of Radiation Oncology, ACTREC, Tata Memorial CentreHomi Bhaba National InstituteKharghar, Navi MumbaiIndia
| | - Nidul P. Rathod
- Department of Radiation Oncology, ACTREC, Tata Memorial CentreHomi Bhaba National InstituteKharghar, Navi MumbaiIndia
| | - Ashwathi Mathews
- Department of Radiation Oncology, ACTREC, Tata Memorial CentreHomi Bhaba National InstituteKharghar, Navi MumbaiIndia
| | - Supriya Chopra
- Department of Radiation Oncology, ACTREC, Tata Memorial CentreHomi Bhaba National InstituteKharghar, Navi MumbaiIndia
| | - Harshini Sriram
- Department of Radiation Oncology, ACTREC, Tata Memorial CentreHomi Bhaba National InstituteKharghar, Navi MumbaiIndia
| | - Shyam K. Shrivastava
- Department of Radiation Oncology, ACTREC, Tata Memorial CentreHomi Bhaba National InstituteKharghar, Navi MumbaiIndia
| | - Jayant S. Goda
- Department of Radiation Oncology, ACTREC, Tata Memorial CentreHomi Bhaba National InstituteKharghar, Navi MumbaiIndia
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65
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Toyoda Y, Takada T, Suzuki H. Inhibitors of Human ABCG2: From Technical Background to Recent Updates With Clinical Implications. Front Pharmacol 2019; 10:208. [PMID: 30890942 PMCID: PMC6411714 DOI: 10.3389/fphar.2019.00208] [Citation(s) in RCA: 94] [Impact Index Per Article: 18.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/25/2018] [Accepted: 02/19/2019] [Indexed: 12/30/2022] Open
Abstract
The ATP-binding cassette transporter G2 (ABCG2; also known as breast cancer resistance protein, BCRP) has been suggested to be involved in clinical multidrug resistance (MDR) in cancer like other ABC transporters such as ABCB1 (P-glycoprotein). As an efflux pump exhibiting a broad substrate specificity localized on cellular plasma membrane, ABCG2 excretes a variety of endogenous and exogenous substrates including chemotherapeutic agents, such as mitoxantrone and several tyrosine kinase inhibitors. Moreover, in the normal tissues, ABCG2 is expressed on the apical membranes and plays a pivotal role in tissue protection against various xenobiotics. For this reason, ABCG2 is recognized to be an important determinant of the pharmacokinetic characteristics of its substrate drugs. Although the clinical relevance of reversing the ABCG2-mediated MDR has been inconclusive, an appropriate modulation of ABCG2 function during chemotherapy should logically enhance the efficacy of anti-cancer agents by overcoming the MDR phenotype and/or improving their pharmacokinetics. To confirm this possibility, considerable efforts have been devoted to developing ABCG2 inhibitors, although there is no clinically available substance for this purpose. As a clue for addressing this issue, this mini-review provides integrated information covering the technical backgrounds necessary to evaluate the ABCG2 inhibitory effects on the target compounds and a current update on the ABCG2 inhibitors. This essentially includes our recent findings, as we serendipitously identified febuxostat, a well-used agent for hyperuricemia as a strong ABCG2 inhibitor, that possesses some promising potentials. We hope that an overview described here will add value to further studies involving in the multidrug transporters.
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Affiliation(s)
- Yu Toyoda
- Department of Pharmacy, The University of Tokyo Hospital, Faculty of Medicine, The University of Tokyo, Tokyo, Japan
| | - Tappei Takada
- Department of Pharmacy, The University of Tokyo Hospital, Faculty of Medicine, The University of Tokyo, Tokyo, Japan
| | - Hiroshi Suzuki
- Department of Pharmacy, The University of Tokyo Hospital, Faculty of Medicine, The University of Tokyo, Tokyo, Japan
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66
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Wang L, Lin N, Li Y. The PI3K/AKT signaling pathway regulates ABCG2 expression and confers resistance to chemotherapy in human multiple myeloma. Oncol Rep 2019; 41:1678-1690. [PMID: 30664164 PMCID: PMC6365707 DOI: 10.3892/or.2019.6968] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2018] [Accepted: 12/06/2018] [Indexed: 12/12/2022] Open
Abstract
Side population (SP) cells are involved in the development of multidrug resistance (MDR) in human multiple myeloma (MM), due to their cancer stem cell (CSC)‑like phenotypes. ATP‑binding cassette (ABC) drug transporter proteins have been reported to be closely associated with MDR in leukemia; however, the correlation between ABC proteins and the progression of MM remains unclear. The present study used MM cell lines and clinical samples to determine the role of ABC subfamily G member 2 (ABCG2) in MM via flow cytometry, reverse transcription‑quantitative polymerase chain reaction and western blotting. SP cells sorted from MM cell lines, including NCI‑H929 cells, via fluorescence‑activated cell sorting, exhibited CSC‑like phenotypes and expressed high levels of ABCG2. Expression of ABCG2 and activation of the phosphatidylinositol 3‑kinase (PI3K)/AKT serine/threonine kinase (AKT) signaling pathway was positively associated with the proportion of SP cells in the NCI‑H929 cell line. In addition, suppression of the PI3K/AKT pathway using LY294002 or rapamycin counteracted the protective effects of ABCG2 against chemotherapeutic drug treatment. Mechanistically, PI3K/AKT signaling may regulate ABCG2 expression, and ABCG2 may regulate phosphatase and tensin homolog expression via a potential negative feedback loop. Furthermore, SP cell proportion, ABCG2 expression and PI3K/AKT pathway activation were associated with disease progression in patients with MM. These findings indicated the critical roles of ABCG2 and PI3K/AKT signaling in controlling stemness of MM cells, and suggested a novel strategy for targeting ABCG2 and PI3K/AKT signaling to treat MM with MDR.
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Affiliation(s)
- Lei Wang
- Department of Hematology, The First Affiliated Hospital of China Medical University, Shenyang, Liaoning 110001, P.R. China
| | - Na Lin
- Department of Hematology, The First Affiliated Hospital of China Medical University, Shenyang, Liaoning 110001, P.R. China
| | - Yan Li
- Department of Hematology, The First Affiliated Hospital of China Medical University, Shenyang, Liaoning 110001, P.R. China
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67
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Arumugam A, Subramani R, Nandy SB, Terreros D, Dwivedi AK, Saltzstein E, Lakshmanaswamy R. Silencing growth hormone receptor inhibits estrogen receptor negative breast cancer through ATP-binding cassette sub-family G member 2. Exp Mol Med 2019; 51:1-13. [PMID: 30617282 PMCID: PMC6323053 DOI: 10.1038/s12276-018-0197-8] [Citation(s) in RCA: 37] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2018] [Revised: 09/11/2018] [Accepted: 10/02/2018] [Indexed: 12/14/2022] Open
Abstract
Growth hormone receptor (GHR) plays a vital role in breast cancer chemoresistance and metastasis but the mechanism is not fully understood. We determined if GHR could be a potential therapeutic target for estrogen receptor negative (ER-ve) breast cancer, which are highly chemoresistant and metastatic. GHR was stably knocked down in ER-ve breast cancer cells and its effect on cell proliferation, metastatic behavior, and chemosensitivity to docetaxel (DT) was assessed. Microarray analysis was performed to identify potential GHR downstream targets involved in chemoresistance. GHR and ATP-binding cassette sub-family G member 2 (ABCG2) overexpression and knockdown studies were performed to investigate the mechanism of GHR-induced chemoresistance. Patient-derived xenografts was used to study the effect of GHR and ABCG2. Immunohistochemical data was used to determine the correlation between GHR, pAKT, pmTOR, and ABCG2 expressions. GHR silencing drastically reduced the chemoresistant and metastatic behavior of ER-ve breast cancer cells and also inhibited AKT/mTOR pathway. In contrast, activation, or overexpression of GHR increased chemoresistance and metastasis by increasing the expression and promoter activity, of ABCG2. Inhibition of JAK2/STAT5 signaling repressed GHR-induced ABCG2 promoter activity and expression. Further, ABCG2 knockdown significantly increased the chemosensitivity. Finally, patient-derived xenograft studies revealed the role of GHR in chemoresistance. Overall, these findings demonstrate that targeting GHR could be a novel therapeutic approach to overcome chemoresistance and associated metastasis in aggressive ER-ve breast cancers.
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Affiliation(s)
- Arunkumar Arumugam
- Center of Emphasis in Cancer Research, Texas Tech University Health Sciences Center El Paso, El Paso, TX, 79905, USA
| | - Ramadevi Subramani
- Center of Emphasis in Cancer Research, Texas Tech University Health Sciences Center El Paso, El Paso, TX, 79905, USA
| | - Sushmita Bose Nandy
- Center of Emphasis in Cancer Research, Texas Tech University Health Sciences Center El Paso, El Paso, TX, 79905, USA
| | - Daniel Terreros
- Research Core Laboratory, Texas Tech University Health Sciences Center El Paso, El Paso, TX, 79905, USA
| | - Alok Kumar Dwivedi
- Division of Biostatistics & Epidemiology, Paul L. Foster School of Medicine, Texas Tech University Health Sciences Center El Paso, El Paso, TX, 79905, USA
| | - Edward Saltzstein
- University Breast Care Center, Texas Tech University Health Sciences Center El Paso, El Paso, TX, 79905, USA
| | - Rajkumar Lakshmanaswamy
- Center of Emphasis in Cancer Research, Texas Tech University Health Sciences Center El Paso, El Paso, TX, 79905, USA. .,Graduate School of Biomedical Sciences, Texas Tech University Health Sciences Center El Paso, El Paso, TX, 79905, USA.
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68
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Wu Y, Gao XY, Chen XH, Zhang SL, Wang WJ, Sheng XH, Chen DZ. Fragment-centric topographic mapping method guides the understanding of ABCG2-inhibitor interactions. RSC Adv 2019; 9:7757-7766. [PMID: 35521159 PMCID: PMC9061187 DOI: 10.1039/c8ra09789e] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2018] [Accepted: 03/01/2019] [Indexed: 11/21/2022] Open
Abstract
Our study gains insight into the development of novel specific ABCG2 inhibitors, and develops a comprehensive computational strategy to understand protein ligand interaction with the help of AlphaSpace, a fragment-centric topographic mapping tool.
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Affiliation(s)
- Yao Wu
- College of Chemistry
- Chemical Engineering and Materials Science
- Collaborative Innovation Centre of Functionalized Probes for Chemical Imaging in Universities of Shandong
- Key Laboratory of Molecular and Nano Probes
- Ministry of Education
| | - Xin-Ying Gao
- College of Chemistry
- Chemical Engineering and Materials Science
- Collaborative Innovation Centre of Functionalized Probes for Chemical Imaging in Universities of Shandong
- Key Laboratory of Molecular and Nano Probes
- Ministry of Education
| | - Xin-Hui Chen
- College of Chemistry
- Chemical Engineering and Materials Science
- Collaborative Innovation Centre of Functionalized Probes for Chemical Imaging in Universities of Shandong
- Key Laboratory of Molecular and Nano Probes
- Ministry of Education
| | - Shao-Long Zhang
- College of Physics and Electronics
- Shandong Normal University
- Jinan 250014
- P. R. China
| | - Wen-Juan Wang
- College of Chemistry
- Chemical Engineering and Materials Science
- Collaborative Innovation Centre of Functionalized Probes for Chemical Imaging in Universities of Shandong
- Key Laboratory of Molecular and Nano Probes
- Ministry of Education
| | - Xie-Huang Sheng
- College of Chemistry
- Chemical Engineering and Materials Science
- Collaborative Innovation Centre of Functionalized Probes for Chemical Imaging in Universities of Shandong
- Key Laboratory of Molecular and Nano Probes
- Ministry of Education
| | - De-Zhan Chen
- College of Chemistry
- Chemical Engineering and Materials Science
- Collaborative Innovation Centre of Functionalized Probes for Chemical Imaging in Universities of Shandong
- Key Laboratory of Molecular and Nano Probes
- Ministry of Education
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69
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Riganti C, Contino M, Guglielmo S, Perrone MG, Salaroglio IC, Milosevic V, Giampietro R, Leonetti F, Rolando B, Lazzarato L, Colabufo NA, Fruttero R. Design, Biological Evaluation, and Molecular Modeling of Tetrahydroisoquinoline Derivatives: Discovery of A Potent P-Glycoprotein Ligand Overcoming Multidrug Resistance in Cancer Stem Cells. J Med Chem 2018; 62:974-986. [DOI: 10.1021/acs.jmedchem.8b01655] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Affiliation(s)
- Chiara Riganti
- Dipartimento di Oncologia, Università degli Studi di Torino, Via Santena 5/bis, 10126 Torino, Italy
| | - Marialessandra Contino
- Dipartimento di Farmacia-Scienze del Farmaco, Università degli Studi di Bari ALDO MORO, Via Orabona 4, 70125 Bari, Italy
| | - Stefano Guglielmo
- Dipartimento di Scienza e Tecnologia del Farmaco, Università degli Studi di Torino, Via P. Giuria 9, 10125 Torino, Italy
| | - Maria G. Perrone
- Dipartimento di Farmacia-Scienze del Farmaco, Università degli Studi di Bari ALDO MORO, Via Orabona 4, 70125 Bari, Italy
| | - Iris C. Salaroglio
- Dipartimento di Oncologia, Università degli Studi di Torino, Via Santena 5/bis, 10126 Torino, Italy
| | - Vladan Milosevic
- Dipartimento di Oncologia, Università degli Studi di Torino, Via Santena 5/bis, 10126 Torino, Italy
| | - Roberta Giampietro
- Dipartimento di Farmacia-Scienze del Farmaco, Università degli Studi di Bari ALDO MORO, Via Orabona 4, 70125 Bari, Italy
| | - Francesco Leonetti
- Dipartimento di Farmacia-Scienze del Farmaco, Università degli Studi di Bari ALDO MORO, Via Orabona 4, 70125 Bari, Italy
| | - Barbara Rolando
- Dipartimento di Scienza e Tecnologia del Farmaco, Università degli Studi di Torino, Via P. Giuria 9, 10125 Torino, Italy
| | - Loretta Lazzarato
- Dipartimento di Scienza e Tecnologia del Farmaco, Università degli Studi di Torino, Via P. Giuria 9, 10125 Torino, Italy
| | - Nicola A. Colabufo
- Dipartimento di Farmacia-Scienze del Farmaco, Università degli Studi di Bari ALDO MORO, Via Orabona 4, 70125 Bari, Italy
- Biofordrug s.r.l., Spin-off dell’Università degli Studi di Bari ALDO MORO, Via Orabona 4, 70125 Bari, Italy
| | - Roberta Fruttero
- Dipartimento di Scienza e Tecnologia del Farmaco, Università degli Studi di Torino, Via P. Giuria 9, 10125 Torino, Italy
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70
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Butti R, Gunasekaran VP, Kumar TVS, Banerjee P, Kundu GC. Breast cancer stem cells: Biology and therapeutic implications. Int J Biochem Cell Biol 2018; 107:38-52. [PMID: 30529656 DOI: 10.1016/j.biocel.2018.12.001] [Citation(s) in RCA: 101] [Impact Index Per Article: 16.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2018] [Revised: 12/03/2018] [Accepted: 12/03/2018] [Indexed: 12/12/2022]
Abstract
Breast cancer remains to be a dreadful disease even with several advancements in radiation and chemotherapies, owing to the drug resistance and tumor relapse caused by breast cancer stem cells. Cancer stem cells are a minute population of cells of solid tumors which show self-renewal and differentiation properties as well as tumorigenic potential. Several signaling pathways including Notch, Hippo, Wnt and Hedgehog and tumor-stroma exchanges play a critical role in the self-renewal and differentiation of cancer stem cells in breast cancer. Cancer stem cells can grow anchorage-independent manner so they disseminate to different parts of the body to form secondary tumors. Cancer stem cells promote angiogenesis by dedifferentiating to endothelial cells as well as secreting proangiogenic and angiogenic factors. Moreover, multidrug resistance genes and drug efflux transporters expressed in breast cancer stem cells confer resistance to various conventional chemotherapeutic drugs. Indeed, these therapies are recognised to enhance the percent of cancer stem cell population in tumors leading to cancer relapse with increased aggressiveness. Hence, devising the therapeutic interventions to target cancer stem cells would be useful in increasing patients' survival rates. In addition, targeting the self-renewal pathways and tumor-stromal cross-talk helps in eradicating this population. Reversal of the cancer stem cell-mediated drug resistance would increase the sensitivity to various conventional drugs for the effective management of breast cancer. In this review, we have discussed the cancer stem cell origin and their involvement in angiogenesis, metastasis and therapy-resistance. We have also summarized different therapeutic approaches to eradicate the same for the successful treatment of breast cancer.
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Affiliation(s)
- Ramesh Butti
- National Centre for Cell Science, SP Pune University Campus, Pune 411007, India.
| | | | - Totakura V S Kumar
- National Centre for Cell Science, SP Pune University Campus, Pune 411007, India.
| | - Pinaki Banerjee
- National Centre for Cell Science, SP Pune University Campus, Pune 411007, India.
| | - Gopal C Kundu
- National Centre for Cell Science, SP Pune University Campus, Pune 411007, India.
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71
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Lončar J, Smital T. Interaction of environmental contaminants with zebrafish (Danio rerio) multidrug and toxin extrusion protein 7 (Mate7/Slc47a7). AQUATIC TOXICOLOGY (AMSTERDAM, NETHERLANDS) 2018; 205:193-203. [PMID: 30396010 DOI: 10.1016/j.aquatox.2018.10.016] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/26/2018] [Revised: 10/23/2018] [Accepted: 10/23/2018] [Indexed: 06/08/2023]
Abstract
Zebrafish Mate7 belongs to solute carrier protein superfamily and specifically to subfamily of multidrug and toxin extruders. It is co-orthologous to mammalian Mates, and is ubiquitously expressed in zebrafish tissues with the highest expression in kidney. It has been shown to interact with both endogenous (steroid hormones) and xenobiotic compounds (pharmaceuticals), implying a role in efflux of toxic compounds. The objective of our study was to analyse interaction of environmental contaminants with zebrafish Mate7 using a newly developed high throughput screening (HTS) Mate7 assay. A full-length zebrafish mate7 sequence was obtained from zebrafish cDNA originating from male kidney, and a stable expression of Mate7 in genetically engineered HEK293 Flp-In cells was achieved. Stable Mate7 transfectants were then used for development and optimization of a new HTS cellular uptake protocol, with DAPI and ASP + as model fluorescent substrates. The developed assay was used for identifying zebrafish Mate 7 interactors and discerning the type of interaction. A series of 89 diverse environmental contaminants, including industrial chemicals, pesticides, and pharmaceuticals, was tested and highly effective Mate7 interactors were identified in all of the aforementioned groups. Some of the inhibitors identified could be of environmental concern because they may potentially impair Mate7 efflux function, lowering the fish defence capacity against environmental contaminants, or interfering with transport of yet unidentified physiological substrates. In addition, we found significant differences between zebrafish Mate7 and mammalian Mates' substrate preferences, a finding that should be taken into consideration when using zebrafish as a model organism in toxicokinetic studies.
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Affiliation(s)
- Jovica Lončar
- Laboratory for Molecular Ecotoxicology, Division for Marine and Environmental Research, Ruđer Bošković Institute, Zagreb, Croatia
| | - Tvrtko Smital
- Laboratory for Molecular Ecotoxicology, Division for Marine and Environmental Research, Ruđer Bošković Institute, Zagreb, Croatia.
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72
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El-Masry MW, Gouda HM, Shaheen IA, Edesa W, Hassan NM, Ramzy R. Breast cancer resistance protein (BCRP) gene expression in a cohort of adult Egyptian patients with acute myeloid leukemia. Afr Health Sci 2018; 18:958-964. [PMID: 30766560 PMCID: PMC6354849 DOI: 10.4314/ahs.v18i4.15] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022] Open
Abstract
BACKGROUND Acute myeloid leukemia (AML), an aggressive clonal disease, is genetically heterozygous. The prognostic role of expression of Breast Cancer Resistance Protein (BCRP) gene, which behaves as a multidrug transporter, in adult AML is ambiguous. OBJECTIVE The objective is to assess the level of mRNA expression of BCRP gene in newly diagnosed cytogenetically normal adult Egyptian AML patients; and to clarify its potential influence and association between therapeutic responsiveness and disease free survival. METHODS The BCRP gene expression was evaluated by quantifying its mRNA using real time RT-PCR in fifty newly diagnosed cytogenetically normal adult AML patients and 20 healthy normal controls. The expression was evaluated in relation to clinical and prognostic factors, response to treatment and the survival rate. RESULTS BCRP mRNA was over expressed in adult AML patients compared to controls. This study showed a positive statistical correlation between BCRP gene expression and the percent of CD34 expression. Statistical analysis did not reveal any association between BCRP expression level and chemotherapeutic responsiveness or disease free survival rate. CONCLUSION The significance of BCRP gene expression and its function in AML is very complicated, therefore more standardized clinical studies are needed.
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73
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The role of GLI-SOX2 signaling axis for gemcitabine resistance in pancreatic cancer. Oncogene 2018; 38:1764-1777. [PMID: 30382189 PMCID: PMC6408295 DOI: 10.1038/s41388-018-0553-0] [Citation(s) in RCA: 49] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2017] [Revised: 08/03/2018] [Accepted: 09/14/2018] [Indexed: 12/21/2022]
Abstract
Pancreatic cancer, mostly pancreatic ductal adenocarcinomas (PDAC), is one of the most lethal cancers, with a dismal median survival around 8 months. PDAC is notoriously resistant to chemotherapy. Thus far, numerous attempts using novel targeted therapies and immunotherapies yielded limited clinical benefits for pancreatic cancer patients. It is hoped that delineating the molecular mechanisms underlying drug resistance in pancreatic cancer may provide novel therapeutic options. Using acquired gemcitabine resistant pancreatic cell lines, we revealed an important role of the GLI-SOX2 signaling axis for regulation of gemcitabine sensitivity in vitro and in animal models. Down-regulation of GLI transcriptional factors (GLI1 or GLI2), but not SMO signaling inhibition, reduces tumor sphere formation, a characteristics of tumor initiating cell (TIC). Down-regulation of GLI transcription factors also decreased expression of TIC marker CD24. Similarly, high SOX2 expression is associated with gemcitabine resistance whereas down-regulation of SOX2 sensitizes pancreatic cancer cells to gemcitabine treatment. We further revealed that elevated SOX2 expression is associated with an increase in GLI1 or GLI2 expression. Our ChIP assay revealed that GLI proteins are associated with a putative Gli binding site within the SOX2 promoter, suggesting a more direct regulation of SOX2 by GLI transcription factors. The relevance of our findings to human disease was revealed in human cancer specimens. We found that high SOX2 protein expression is associated with frequent tumor relapse and poor survival in stage II PDAC patients (all of them underwent gemcitabine treatment), indicating that reduced SOX2 expression or down-regulation of GLI transcription factors may be effective in sensitizing pancreatic cancer cells to gemcitabine treatment.
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74
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Saeg F, Anbalagan M. Breast cancer stem cells and the challenges of eradication: a review of novel therapies. Stem Cell Investig 2018; 5:39. [PMID: 30498750 DOI: 10.21037/sci.2018.10.05] [Citation(s) in RCA: 41] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2018] [Accepted: 09/29/2018] [Indexed: 12/20/2022]
Abstract
Breast cancer is a heterogeneous disease that accounts for 30% of all cancers diagnosed in women and over half a million deaths per year. Cancer stem cells (CSCs) make up a small subpopulation of cells within a tumor, are capable of self-renewal and, are responsible for tumor initiation, formation, and recurrence. Breast CSCs (BCSCs) have been the subject of concentrated research as potential targets for breast cancer therapies. Cell surface markers CD44+/CD24- have been established as minimum biomarkers for BCSCs and the upregulation of CD44 expression has been linked to tumor formation in numerous cancers. Additionally, the deregulation of Notch, Wnt/Frizzled/β-catenin, Hippo, and Hedgehog signaling pathways is believed to be responsible for the formation of CSCs and lead to tumor formation. Tumor heterogeneity is a key feature of therapy resistance and a major challenge. CSCs are predominantly senescent and inherently immune to chemotherapy drugs which rely on an overactive cell cycle. Current therapeutic strategies include targeting CSC signaling pathways that play critical roles in self-renewal and defense. Anti-CD44 antibodies have been shown to induce terminal differentiation in CSCs resulting in a significant decrease in tumor metastasis. Additionally, targeting the tumor microenvironment has been shown to increase the effectiveness of chemotherapy drugs. In this review, we attempt to provide an overview of breast cancer, the stem of its cause, and novel therapies currently being explored.
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Affiliation(s)
- Fouad Saeg
- Department of Structural and Cellular Biology, Tulane University School of Medicine, New Orleans, LA, USA.,DeBakey Scholars Program, Tulane University School of Medicine, New Orleans, LA, USA
| | - Muralidharan Anbalagan
- Department of Structural and Cellular Biology, Tulane University School of Medicine, New Orleans, LA, USA
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Heyes N, Kapoor P, Kerr ID. Polymorphisms of the Multidrug Pump ABCG2: A Systematic Review of Their Effect on Protein Expression, Function, and Drug Pharmacokinetics. Drug Metab Dispos 2018; 46:1886-1899. [PMID: 30266733 DOI: 10.1124/dmd.118.083030] [Citation(s) in RCA: 53] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2018] [Accepted: 09/20/2018] [Indexed: 12/11/2022] Open
Abstract
The widespread expression and polyspecificity of the multidrug ABCG2 efflux transporter make it an important determinant of the pharmacokinetics of a variety of substrate drugs. Null ABCG2 expression has been linked to the Junior blood group. Polymorphisms affecting the expression or function of ABCG2 may have clinically important roles in drug disposition and efficacy. The most well-studied single nucleotide polymorphism (SNP), Q141K (421C>A), is shown to decrease ABCG2 expression and activity, resulting in increased total drug exposure and decreased resistance to various substrates. The effect of Q141K can be rationalized by inspection of the ABCG2 structure, and the effects of this SNP on protein processing may make it a target for pharmacological intervention. The V12M SNP (34G>A) appears to improve outcomes in cancer patients treated with tyrosine kinase inhibitors, but the reasons for this are yet to be established, and this residue's role in the mechanism of the protein is unexplored by current biochemical and structural approaches. Research into the less-common polymorphisms is confined to in vitro studies, with several polymorphisms shown to decrease resistance to anticancer agents such as SN-38 and mitoxantrone. In this review, we present a systematic analysis of the effects of ABCG2 polymorphisms on ABCG2 function and drug pharmacokinetics. Where possible, we use recent structural advances to present a molecular interpretation of the effects of SNPs and indicate where we need further in vitro experiments to fully resolve how SNPs impact ABCG2 function.
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Affiliation(s)
- Niall Heyes
- School of Life Sciences, Queen's Medical Centre, University of Nottingham, Nottingham, United Kingdom
| | - Parth Kapoor
- School of Life Sciences, Queen's Medical Centre, University of Nottingham, Nottingham, United Kingdom
| | - Ian D Kerr
- School of Life Sciences, Queen's Medical Centre, University of Nottingham, Nottingham, United Kingdom
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76
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Krapf MK, Gallus J, Namasivayam V, Wiese M. 2,4,6-Substituted Quinazolines with Extraordinary Inhibitory Potency toward ABCG2. J Med Chem 2018; 61:7952-7976. [PMID: 30075623 DOI: 10.1021/acs.jmedchem.8b01011] [Citation(s) in RCA: 34] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
Several members of the ABC transporter superfamily play a decisive role in the development of multidrug resistance (MDR) in cancer. One of these MDR associated efflux transporters is ABCG2. One way to overcome this MDR is the coadministration of potent inhibitors of ABCG2. In this study, we identified novel inhibitors containing a 2,4,6-substituted quinazoline scaffold. Introduction of a 6-nitro function led to extraordinarily potent compounds that were highly selective for ABCG2 and also able to reverse the MDR toward the chemotherapeutic drugs SN-38 and mitoxantrone. The binding of substrate Hoechst 33342 and the two potent inhibitors 31 and 41 which differ in their mechanism of inhibition was rationalized using the recently published cryo-EM structures of ABCG2. For a better understanding of the interaction between the inhibitors and ABCG2, additional investigations regarding the ATPase activity, the interaction with Hoechst 33342, and with the conformational sensitive 5D3 antibody were carried out.
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Affiliation(s)
- Michael K Krapf
- Pharmaceutical Institute University of Bonn An der Immenburg 4 53121 Bonn , Germany
| | - Jennifer Gallus
- Pharmaceutical Institute University of Bonn An der Immenburg 4 53121 Bonn , Germany
| | | | - Michael Wiese
- Pharmaceutical Institute University of Bonn An der Immenburg 4 53121 Bonn , Germany
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77
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Peña-Solórzano D, Scholler M, Bernhardt G, Buschauer A, König B, Ochoa-Puentes C. Tariquidar-Related Chalcones and Ketones as ABCG2 Modulators. ACS Med Chem Lett 2018; 9:854-859. [PMID: 30128080 DOI: 10.1021/acsmedchemlett.8b00289] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2018] [Accepted: 07/25/2018] [Indexed: 01/08/2023] Open
Abstract
ABC transporters, including ABCG2, play a vital role in defending the human body against the vast range of xenobiotics. Even though this is beneficial for human health, these protein transporters have been implicated in the emerging resistance of cancer cells to a variety of structurally and functionally diverse anticancer drugs. In order to investigate their role in resistance, potent and selective ABCG2 modulators have been described in the literature. A leading class of modulators are the tariquidar analogues; however, their susceptibility to hydrolysis limits their applicable use. To overcome this, we synthesized a novel series of chalcone- and ketone-based compounds inspired by reported tariquidar analogues. Compounds were characterized and evaluated for their ABCG2 modulatory activity and ABC transporter selectivity. When compared to transporters ABCB1 and ABCC1, the chalcone-based compounds exhibited selectivity for ABCG2, while the ketone-based compounds showed only a slight preference for ABCG2. From the former series, chalcone 16d (UR-DP48) displayed similar activity to the reference fumitremorgin C, both producing comparable maximal effects. The compound exhibited marked antiproliferative activity, while cytotoxicity was less pronounced for the most active compound 17f from the ketone series. Chalcone-containing tariquidar analogues are promising modulators to aid in functional investigations of ABCG2 transporters.
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Affiliation(s)
- Diana Peña-Solórzano
- Laboratorio de Síntesis Orgánica Sostenible, Departamento de Química, Universidad Nacional de Colombia−Sede Bogotá, 5997 Bogotá, Colombia
| | | | | | | | | | - Cristian Ochoa-Puentes
- Laboratorio de Síntesis Orgánica Sostenible, Departamento de Química, Universidad Nacional de Colombia−Sede Bogotá, 5997 Bogotá, Colombia
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Ripperger A, Krischer A, Robaa D, Sippl W, Benndorf RA. Pharmacogenetic Aspects of the Interaction of AT1 Receptor Antagonists With ATP-Binding Cassette Transporter ABCG2. Front Pharmacol 2018; 9:463. [PMID: 29867471 PMCID: PMC5960723 DOI: 10.3389/fphar.2018.00463] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2018] [Accepted: 04/20/2018] [Indexed: 12/30/2022] Open
Abstract
The ATP-binding cassette transporter ABCG2 (BCRP and MXR) is involved in the absorption, distribution, and elimination of numerous drugs. Thus, drugs that are able to reduce the activity of ABCG2, e.g., antihypertensive AT1 receptor antagonists (ARBs), may cause drug-drug interactions and compromise drug safety and efficacy. In addition, genetic variability within the ABCG2 gene may influence the ability of the transporter to interact with ARBs. Thus, the aim of this study was to characterize the ARB-ABCG2 interaction in the light of naturally occurring variations (F489L, R482G) or amino acid substitutions with in silico-predicted relevance for the ARB-ABCG2 interaction (Y469A; M483F; Y570A). For this purpose, ABCG2 variants were expressed in HEK293 cells and the impact of ARBs on ABCG2 activity was studied in vitro using the pheophorbide A (PhA) efflux assay. First, we demonstrated that both the F489L and the Y469A substitution, respectively, reduced ABCG2 protein levels in these cells. Moreover, both substitutions enhanced the inhibitory effect of candesartan cilexetil, irbesartan, losartan, and telmisartan on ABCG2-mediated PhA efflux, whereas the R482G substitution blunted the inhibitory effect of candesartan cilexetil and telmisartan in this regard. In contrast, the ARB-ABCG2 interaction was not altered in cells expressing either the M483F or the Y570A variant, respectively. In conclusion, our data indicate that the third transmembrane helix and adjacent regions of ABCG2 may be of major importance for the interaction of ARBs with the ABC transporter. Moreover, we conclude from our data that individuals carrying the F489L polymorphism may be at increased risk of developing ABCG2-related drug-drug interactions in multi-drug regimens involving ARBs.
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Affiliation(s)
- Anne Ripperger
- Department of Clinical Pharmacy and Pharmacotherapy, Institute of Pharmacy, Martin-Luther-University Halle-Wittenberg, Halle, Germany
| | - Anna Krischer
- Department of Clinical Pharmacy and Pharmacotherapy, Institute of Pharmacy, Martin-Luther-University Halle-Wittenberg, Halle, Germany
| | - Dina Robaa
- Department of Medicinal Chemistry, Institute of Pharmacy, Martin-Luther-University Halle-Wittenberg, Halle, Germany
| | - Wolfgang Sippl
- Department of Medicinal Chemistry, Institute of Pharmacy, Martin-Luther-University Halle-Wittenberg, Halle, Germany
| | - Ralf A Benndorf
- Department of Clinical Pharmacy and Pharmacotherapy, Institute of Pharmacy, Martin-Luther-University Halle-Wittenberg, Halle, Germany
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80
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Chen MC, Hsu HH, Chu YY, Cheng SF, Shen CY, Lin YJ, Chen RJ, Viswanadha VP, Lin YM, Huang CY. Lupeol alters ER stress-signaling pathway by downregulating ABCG2 expression to induce Oxaliplatin-resistant LoVo colorectal cancer cell apoptosis. ENVIRONMENTAL TOXICOLOGY 2018; 33:587-593. [PMID: 29436100 DOI: 10.1002/tox.22544] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/27/2017] [Revised: 01/23/2018] [Accepted: 01/27/2018] [Indexed: 06/08/2023]
Abstract
Colorectal cancer (CRC) is one of the most common cancers and causes of cancer-related death. There are several first-line chemotherapeutic drugs used to treat CRC. Oxaliplatin (OXA) is an alkylating cytotoxic agent that is usually combined with other chemotherapeutic drugs to treat stage II and stage III CRC. However, cancer cells commonly acquire multidrug resistance (MDR), which is a major obstruction to cancer treatment. Recent studies have shown that natural components from traditional Chinese medicine or foods that have many biological functions may be new adjuvant therapies in clinical trials. We challenged LoVo CRC cell lines with OXA in a dose-dependent manner to create an OXA-resistant model. The expression of ABCG2 was significantly higher, and levels of endoplasmic reticulum (ER) stress markers were lower than those Parental cells. However, Lupeol, which is found in fruits and vegetables, has been shown to have bioactive properties, including anti-tumor properties that are relevant to many diseases. In our study, Lupeol downregulated cell viability and activated cell apoptosis. Moreover, Lupeol decreased the expression of ABCG2 and activated ER stress to induce OXA-resistant cell death. Importantly, the anti-tumor effect of Lupeol in OXA-resistant cells was higher than that of LoVo Parental cells. In addition, we also confirmed our results with a xenograft animal model, and the tumor size significantly decreased after Lupeol injections. Our findings show that Lupeol served as a strong chemoresistant sensitizer and could be a new adjuvant therapy method for chemoresistant patients.
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Affiliation(s)
- Ming-Cheng Chen
- Division of Colorectal Surgery, Taichung Veterans General Hospital, Taichung, Taiwan
- Faculty of Medicine, National Yang-Ming University, Taipei, Taiwan
| | - Hsi-Hsien Hsu
- Division of Colorectal Surgery, Mackay Memorial Hospital, Taipei, Taiwan
- Mackay Medicine, Nursing and Management College, Taipei, Taiwan
| | - Yuan-Yuan Chu
- Graduate Institute of Basic Medical Science, China Medical University, Taichung, Taiwan
| | - Sue-Fei Cheng
- Department of Pharmacy, Veterans General Hospital, Taipei, Taiwan
| | - Chia-Yao Shen
- Department of Nursing, Mei Ho University, Pingguang Road, Pingtung, Taiwan
| | - Yi-Jiun Lin
- Graduate Institute of Basic Medical Science, China Medical University, Taichung, Taiwan
| | - Ray-Jade Chen
- Department of Surgery, School of Medicine, College of Medicine, Taipei Medical University, Taipei, Taiwan
| | | | - Yueh-Min Lin
- Department of Pathology, Changhua Christian Hospital, Changhua, Taiwan
- Jen-Teh Junior College of Medicine, Nursing and Management, Miaoli, Taiwan
| | - Chih-Yang Huang
- Graduate Institute of Basic Medical Science, China Medical University, Taichung, Taiwan
- Faculty of Applied Sciences, Ton Duc Thang University, Tan Phong Ward, District 7, Ho Chi Minh City, 700000, Vietnam
- Graduate Institute of Chinese Medical Science, China Medical University, Taichung, Taiwan
- Department of Health and Nutrition Biotechnology, Asia University, Taichung, Taiwan
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81
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Su YH, Lin TY, Liu HJ, Chuang CK. A set of cancer stem cell homing peptides associating with the glycan moieties of glycosphingolipids. Oncotarget 2018; 9:20490-20507. [PMID: 29755667 PMCID: PMC5945507 DOI: 10.18632/oncotarget.24960] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2017] [Accepted: 03/12/2018] [Indexed: 12/15/2022] Open
Abstract
Cancer stem cells (CSCs) are currently believed to be involved in tumor metastasis and relapse. And treatments against CSCs are well concerned issues. Peptides targeting to mouse and human CSCs were screened from an M13 phage display library. The first subset of cancer stem cell homing peptides (CSC HPs), CSC HP-1 to -12, were screened with mouse EMT6 breast cancer stem cells. Among them, CSC HP-1, CSC HP-3, CSC HP-8, CSC HP-9, and CSC HP-10 can bind to mouse CT26 colon CSCs; CSC HP-1, CSC HP-2, CSC HP-3, and CSC HP-8 can bind to mouse Hepa1-6 liver CSCs; as well as CSC HP-1, CSC HP-2, CSC HP-3, CSC HP-8, CSC HP-9, CSC HP-10, and CSC HP-11 can bind to human PANC-1 pancreatic CSCs. The second subset of cancer stem cell homing peptides, CSC HP-hP1 to -hP3, were screened with human PANC-1 pancreatic CSCs. Both CSC HP-hP1 and CSC HP-hP2 were demonstrated able to bind mouse EMT6, CT26 and Hepa1-6 CSCs as well as human colorectal HT29 and lung H1650 CSCs. CSC HP-1 and CSC HP-hP1 could strongly associate with the Globo 4 and Lewis Y glycan epitopes coupled on a microarray chip or Globo 4 and Globo H conjugated on bovine serum albumin. CSC HP-10, CSC HP-11 and CSC HP-hP2 could associate with the disialylated saccharide Neu5Ac-α-2,6-Gal-β-1,3-(Neu5Ac-α-2,6)-GalNAc coupled on a microarray chip. These results indicate that the CSC HPs may target to the known stem cell glycan markers GbH and Lewis Y as well as the disialylated saccharide.
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Affiliation(s)
- Yu-Hsiu Su
- Division of Biotechnology, Animal Technology Laboratories, Agricultural Technology Research Institute, Hsinchu City 30093, Taiwan
- Institute of Molecular Biology, National Chung Hsing University, Taichung City 40227, Taiwan
| | - Tai-Yun Lin
- Division of Biotechnology, Animal Technology Laboratories, Agricultural Technology Research Institute, Hsinchu City 30093, Taiwan
| | - Hung-Jen Liu
- Institute of Molecular Biology, National Chung Hsing University, Taichung City 40227, Taiwan
- Rong Hsing Research Center for Translational Medicine, National Chung Hsing University, Taichung City 40227, Taiwan
- The iEGG and Animal Biotechnology Center, National Chung Hsing University, Taichung City 40227, Taiwan
| | - Chin-Kai Chuang
- Division of Biotechnology, Animal Technology Laboratories, Agricultural Technology Research Institute, Hsinchu City 30093, Taiwan
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82
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Huang R, Rofstad EK. Cancer stem cells (CSCs), cervical CSCs and targeted therapies. Oncotarget 2018; 8:35351-35367. [PMID: 27343550 PMCID: PMC5471060 DOI: 10.18632/oncotarget.10169] [Citation(s) in RCA: 96] [Impact Index Per Article: 16.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2016] [Accepted: 06/12/2016] [Indexed: 12/12/2022] Open
Abstract
Accumulating evidence has shown that cancer stem cells (CSCs) have a tumour-initiating capacity and play crucial roles in tumour metastasis, relapse and chemo/radio-resistance. As tumour propagation initiators, CSCs are considered to be promising targets for obtaining a better therapeutic outcome. Cervical carcinoma is the most common gynaecological malignancy and has a high cancer mortality rate among females. As a result, the investigation of cervical cancer stem cells (CCSCs) is of great value. However, the numbers of cancer cells and corresponding CSCs in malignancy are dynamically balanced, and CSCs may reside in the CSC niche, about which little is known to date. Therefore, due to their complicated molecular phenotypes and biological behaviours, it remains challenging to obtain “purified” CSCs and continuously culture CSCs for further in vitro studies without the cells losing their stem properties. At present, CSC-related markers and functional assays are used to purify, identify and therapeutically target CSCs both in vitro and in vivo. Nevertheless, CSC-related markers are not universal to all tumour types, although some markers may be valid in multiple tumour types. Additionally, functional identifications based on CSC-specific properties are usually limited in in vivo studies. Furthermore, an optimal method for identifying potential CCSCs in CCSC studies has not been previously published, and these techniques are currently of great importance. This article updates our knowledge on CSCs and CCSCs, reviews potential stem cell markers and functional assays for identifying CCSCs, and describes the potential of targeting CCSCs in the treatment of cervical carcinoma.
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Affiliation(s)
- Ruixia Huang
- Department of Radiation Biology, Institute for Cancer Research, The Norwegian Radium Hospital, Oslo University Hospital, Oslo, Norway
| | - Einar K Rofstad
- Department of Radiation Biology, Institute for Cancer Research, The Norwegian Radium Hospital, Oslo University Hospital, Oslo, Norway
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83
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Yu B, Gu D, Zhang X, Li J, Liu B, Xie J. GLI1-mediated regulation of side population is responsible for drug resistance in gastric cancer. Oncotarget 2018; 8:27412-27427. [PMID: 28404967 PMCID: PMC5432345 DOI: 10.18632/oncotarget.16174] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2016] [Accepted: 01/24/2017] [Indexed: 02/06/2023] Open
Abstract
Gastric cancer is the third leading cause of cancer-related mortality worldwide. Chemotherapy is frequently used for gastric cancer treatment. Most patients with advanced gastric cancer eventually succumb to the disease despite some patients responded initially to chemotherapy. Thus, identifying molecular mechanisms responsible for cancer relapse following chemotherapy will help design new ways to treat gastric cancer. In this study, we revealed that the residual cancer cells following treatment with chemotherapeutic reagent cisplatin have elevated expression of hedgehog target genes GLI1, GLI2 and PTCH1, suggestive of hedgehog signaling activation. We showed that GLI1 knockdown sensitized gastric cancer cells to CDDP whereas ectopic GLI1 expression decreased the sensitivity. Further analyses indicate elevated GLI1 expression is associated with an increase in tumor sphere formation, side population and cell surface markers for putative cancer stem cells. We have evidence to support that GLI1 is critical for maintenance of putative cancer stem cells through direct regulation of ABCG2. In fact, GLI1 protein was shown to be associated with the promoter fragment of ABCG2 through a Gli-binding consensus site in gastric cancer cells. Disruption of ABCG2 function, through ectopic expression of an ABCG2 dominant negative construct or a specific ABCG2 inhibitor, increased drug sensitivity of cancer cells both in culture and in mice. The relevance of our studies to gastric cancer patient care is reflected by our discovery that high ABCG2 expression was associated with poor survival in the gastric cancer patients who underwent chemotherapy. Taken together, we have identified a molecular mechanism by which gastric cancer cells gain chemotherapy resistance.
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Affiliation(s)
- Beiqin Yu
- Shanghai Key Laboratory of Gastric Neoplasms, Shanghai Institute of Digestive Surgery, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai 200025, China.,Department of Pediatrics, The Wells Center for Pediatrics Research and IU Simon Cancer Center, Indiana University School of Medicine, Indianapolis, IN 46202, USA
| | - Dongsheng Gu
- Department of Pediatrics, The Wells Center for Pediatrics Research and IU Simon Cancer Center, Indiana University School of Medicine, Indianapolis, IN 46202, USA
| | - Xiaoli Zhang
- Department of Pediatrics, The Wells Center for Pediatrics Research and IU Simon Cancer Center, Indiana University School of Medicine, Indianapolis, IN 46202, USA
| | - Jianfang Li
- Shanghai Key Laboratory of Gastric Neoplasms, Shanghai Institute of Digestive Surgery, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai 200025, China
| | - Bingya Liu
- Shanghai Key Laboratory of Gastric Neoplasms, Shanghai Institute of Digestive Surgery, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai 200025, China
| | - Jingwu Xie
- Department of Pediatrics, The Wells Center for Pediatrics Research and IU Simon Cancer Center, Indiana University School of Medicine, Indianapolis, IN 46202, USA
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84
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Buzzelli JN, Ouaret D, Brown G, Allen PD, Muschel RJ. Colorectal cancer liver metastases organoids retain characteristics of original tumor and acquire chemotherapy resistance. Stem Cell Res 2018; 27:109-120. [PMID: 29414601 PMCID: PMC5842239 DOI: 10.1016/j.scr.2018.01.016] [Citation(s) in RCA: 57] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/27/2017] [Revised: 11/30/2017] [Accepted: 01/12/2018] [Indexed: 02/07/2023] Open
Abstract
BACKGROUND Colorectal cancer (CRC) liver metastasis is highly unfavorable for patient outcome and is a leading cause of cancer-related death. Pre-clinical research of CRC liver metastasis predominately utilizes CRC cell lines grown in tissue culture. Here, we demonstrate that CRC liver metastases organoids derived from human specimens recapitulate some aspects of human disease. METHODS Human CRC liver metastases pathological specimens were obtained following patient consent. Tumor disaggregates were plated and organoids were allowed to expand. CRC markers were identified by immunofluorescence. Stem cell genes were analysed by QPCR and flow cytometry. Response to drug therapy was quantified using time-lapse imaging and MATLAB analysis. RESULTS Organoids showed global expression of the epithelial marker, EpCAM and the adenocarcinoma marker, CEA CAM1. Flow cytometry analysis demonstrated that organoids express the stem cell surface markers CD24 and CD44. Finally, we demonstrated that CRC liver metastases organoids acquire chemotherapy resistance and can be utilized as surrogates for drug testing. CONCLUSION These data demonstrate that CRC liver metastases organoids recapitulate some aspects of human disease and may provide an invaluable resource for investigating novel drug therapies, chemotherapy resistance and mechanism of metastasis.
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Affiliation(s)
- Jon N Buzzelli
- Old Road Research Campus Building, Department of Oncology, University of Oxford, Oxford, UK.
| | - Djamila Ouaret
- Cancer and Immunogenetics Laboratory, Weatherall Institute of Molecular Medicine, Department of Oncology, University of Oxford, John Radcliffe Hospital, Oxford OX3 9DS, UK
| | - Graham Brown
- Old Road Research Campus Building, Department of Oncology, University of Oxford, Oxford, UK
| | - Philip D Allen
- Old Road Research Campus Building, Department of Oncology, University of Oxford, Oxford, UK
| | - Ruth J Muschel
- Old Road Research Campus Building, Department of Oncology, University of Oxford, Oxford, UK
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85
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Dai Y, Liu S, Zhang WQ, Yang YL, Hang P, Wang H, Cheng L, Hsu PC, Wang YC, Xu Z, Jablons DM, You L. YAP1 regulates ABCG2 and cancer cell side population in human lung cancer cells. Oncotarget 2018; 8:4096-4109. [PMID: 27911857 PMCID: PMC5354815 DOI: 10.18632/oncotarget.13686] [Citation(s) in RCA: 31] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2016] [Accepted: 11/21/2016] [Indexed: 12/29/2022] Open
Abstract
A small population of cancer cells called cancer-initiating cells or cancer stem cells (CSCs) are involved in drug resistance, metastasis, and cancer relapse. Finding pathways that regulate CSC is very important for clinical therapy. ATP-binding cassette sub-family G member 2 (ABCG2) plays a role in side population (SP) cell formation and contributes to chemotherapy resistance in common forms of cancer. Yes-associated protein 1 (YAP1) is a major transcriptional effector of the Hippo pathway, which plays important roles in organ size control and tumorigenesis. In this study, we found ABCG2 and YAP1 were both overexpressed in lung cancer SP cells. Disruption of YAP1 expression by siRNA attenuated the expression of ABCG2 transcript and significantly reduced the percentage of SP cells and sphere formation in lung cancer cells. Overexpression of YAP1 in lung cancers led to an increase in ABCG2 expression and increased the percentage of SP cells. However, overexpression of YAP1 in purified non-SP cells did not increase ABCG2 expression and the percentage of SP cells, which may be due to the inhibition of YAP activity through phosphorylation. YAP1 directly transcriptionally regulated ABCG2 by binding to the promoter of ABCG2. Moreover, the YAP1 inhibitor verteporfin and YAP1 siRNA downregulated ABCG2 level through inhibition of YAP1 in lung cancer cells and sensitized them to the chemotherapy drug doxorubicin. Our study adds a new function for YAP1 that may be relevant to drug resistance and cancer therapy through regulation of ABCG2 and side population cell formation in lung cancer.
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Affiliation(s)
- Yuyuan Dai
- Thoracic Oncology Laboratory, Department of Surgery, Comprehensive Cancer Center, University of California, San Francisco, CA, USA
| | - Shu Liu
- Thoracic Oncology Laboratory, Department of Surgery, Comprehensive Cancer Center, University of California, San Francisco, CA, USA
| | - Wen-Qian Zhang
- Thoracic Oncology Laboratory, Department of Surgery, Comprehensive Cancer Center, University of California, San Francisco, CA, USA.,Department of Thoracic Surgery, Beijing Chao-Yang Hospital, Affiliated with Capital University of Medical Science, Beijing, People's Republic of China
| | - Yi-Lin Yang
- Thoracic Oncology Laboratory, Department of Surgery, Comprehensive Cancer Center, University of California, San Francisco, CA, USA
| | - Phillip Hang
- Thoracic Oncology Laboratory, Department of Surgery, Comprehensive Cancer Center, University of California, San Francisco, CA, USA
| | - Hui Wang
- Thoracic Oncology Laboratory, Department of Surgery, Comprehensive Cancer Center, University of California, San Francisco, CA, USA
| | - Li Cheng
- Thoracic Oncology Laboratory, Department of Surgery, Comprehensive Cancer Center, University of California, San Francisco, CA, USA
| | - Ping-Chih Hsu
- Thoracic Oncology Laboratory, Department of Surgery, Comprehensive Cancer Center, University of California, San Francisco, CA, USA
| | - Yu-Chen Wang
- Thoracic Oncology Laboratory, Department of Surgery, Comprehensive Cancer Center, University of California, San Francisco, CA, USA
| | - Zhidong Xu
- Thoracic Oncology Laboratory, Department of Surgery, Comprehensive Cancer Center, University of California, San Francisco, CA, USA
| | - David M Jablons
- Thoracic Oncology Laboratory, Department of Surgery, Comprehensive Cancer Center, University of California, San Francisco, CA, USA
| | - Liang You
- Thoracic Oncology Laboratory, Department of Surgery, Comprehensive Cancer Center, University of California, San Francisco, CA, USA
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86
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Adachi E, Sakai K, Nishiuchi T, Imamura R, Sato H, Matsumoto K. Different growth and metastatic phenotypes associated with a cell-intrinsic change of Met in metastatic melanoma. Oncotarget 2018; 7:70779-70793. [PMID: 27683122 PMCID: PMC5342589 DOI: 10.18632/oncotarget.12221] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2016] [Accepted: 09/13/2016] [Indexed: 12/19/2022] Open
Abstract
A dynamic phenotypic change contributes to the metastatic progression and drug resistance in malignant melanoma. Nevertheless, mechanisms for a phenotypic change have remained to be addressed. Here, we show that Met receptor expression changes in a cell-autonomous manner and can distinguish phenotypical differences in growth, as well as in metastatic and drug-resistant characteristics. In metastatic melanoma, the cells are composed of Met-low and Met-high populations. Met-low populations have stem-like gene expression profiles, are resistant to chemotherapeutic agents, and have shown abundant angiogenesis and rapid tumor growth in subcutaneous inoculation. Met-high populations have a differentiated phenotype, are relatively resistant to B-RAF inhibitor, and are highly metastatic to the lungs. Met plays a definitive role in lung metastasis because the lung metastasis of Met-high cells requires Met, and treatment of mice with the Met-containing exosomes from Met-high cells facilitates lung metastasis by Met-low cells. Clonal cell fate analysis showed the hierarchical phenotypical changes from Met-low to Met-high populations. Met-low cells either showed self-renewal or changed into Met-high cells, whereas Met-high cells remained Met-high. Clonal transition from Met-low to Met-high cells accompanied changes in the gene expression profile, in tumor growth, and in metastasis that were similar to those in Met-high cells. These findings indicate that malignant melanoma has the ability to undergo phenotypic change by a cell-intrinsic/autonomous mechanism that can be characterized by Met expression.
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Affiliation(s)
- Eri Adachi
- Division of Tumor Dynamics and Regulation, Cancer Research Institute, Kanazawa University, Kakuma, Kanazawa 920-1192, Japan
| | - Katsuya Sakai
- Division of Tumor Dynamics and Regulation, Cancer Research Institute, Kanazawa University, Kakuma, Kanazawa 920-1192, Japan
| | - Takumi Nishiuchi
- Division of Functional Genomics, Advanced Science Research Center, Kanazawa University, Kakuma, Kanazawa 920-0934, Japan
| | - Ryu Imamura
- Division of Tumor Dynamics and Regulation, Cancer Research Institute, Kanazawa University, Kakuma, Kanazawa 920-1192, Japan
| | - Hiroki Sato
- Division of Tumor Dynamics and Regulation, Cancer Research Institute, Kanazawa University, Kakuma, Kanazawa 920-1192, Japan
| | - Kunio Matsumoto
- Division of Tumor Dynamics and Regulation, Cancer Research Institute, Kanazawa University, Kakuma, Kanazawa 920-1192, Japan
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Abstract
Resistance to chemotherapy and cancer relapse are major clinical challenges attributed to a sub population of cancer stem cells (CSCs). The concept of CSCs has been the subject of intense research by the oncology community since evidence for their existence was first published over twenty years ago. Emerging data indicates that they are also able to evade novel therapies such as targeted agents, immunotherapies and anti-angiogenics. The inability to appropriately identify and isolate CSCs is a major hindrance to the field and novel technologies are now being utilized. Agents that target CSC-associated cell surface receptors and signaling pathways have generated promising pre-clinical results and are now entering clinical trial. Here we discuss and evaluate current therapeutic strategies to target CSCs.
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Affiliation(s)
- Stephanie Annett
- Molecular and Cellular Therapeutics, Royal College of Surgeons Ireland, Ireland
| | - Tracy Robson
- Molecular and Cellular Therapeutics, Royal College of Surgeons Ireland, Ireland.
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88
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Rosen MB, Jeffay SC, Nichols HP, Hoopes MR, Hunter ES. ATP Binding Cassette Sub-family Member 2 (ABCG2) and Xenobiotic Exposure During Early Mouse Embryonic Stem Cell Differentiation. Birth Defects Res 2018; 110:35-47. [PMID: 28990372 PMCID: PMC9831278 DOI: 10.1002/bdr2.1114] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2017] [Revised: 07/25/2017] [Accepted: 07/28/2017] [Indexed: 01/13/2023]
Abstract
BACKGROUND ATP binding cassette sub-family member 2 (ABCG2) is a well-defined efflux transporter found in a variety of tissues. The role of ABCG2 during early embryonic development, however, is not established. Previous work which compared data from the ToxCast screening program with that from in-house studies suggested an association exists between exposure to xenobiotics that regulate Abcg2 transcription and differentiation of mouse embryonic stem cells (mESC), a relationship potentially related to redox homeostasis. METHODS mESC were grown for up to 9 days. Pharmacological inhibitors were used to assess transporter function with and without xenobiotic exposure. Proliferation and differentiation were evaluated using RedDot1 and quantiative reverse transcriptase-polymerase chain reaction, respectively. ABCG2 activity was assessed using a Pheophorbide a-based fluorescent assay. Protein expression was measured by capillary-based immunoassay. RESULTS ABCG2 activity increased in differentiating mESC. Treatment with K0143, an inhibitor of ABCG2, had no effect on proliferation or differentiation. As expected, mitoxantrone and topotecan, two chemotherapeutics, displayed increased toxicity in the presence of K0143. Exposure to K0143 in combination with chemicals predicted by ToxCast to regulate ABCG2 expression did not alter xenobiotic-induced toxicity. Moreover, inhibition of ABCG2 did not shift the toxicity of either tert-Butyl hydroperoxide or paraquat, two oxidative stressors. CONCLUSION As previously reported, ABCG2 serves a protective role in mESC. The role of ABCG2 in regulating redox status, however, was unclear. The hypothesis that ABCG2 plays a fundamental role during mESC differentiation or that regulation of the receptor by xenobiotics may be associated with altered mESC differentiation could not be supported. Birth Defects Research, 110:35-47, 2018. Published 2017. This article is a U.S. Government work and is in the public domain in the USA.
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Affiliation(s)
- Mitchell B Rosen
- U.S. Environmental Protection Agency, Office of Research and Development, National Health and Environmental Effects Research Laboratory, Integrated Systems Toxicology Division, Research Triangle Park, North Carolina
| | - Susan C Jeffay
- U.S. Environmental Protection Agency, Office of Research and Development, National Health and Environmental Effects Research Laboratory, Integrated Systems Toxicology Division, Research Triangle Park, North Carolina
| | - Harriette P Nichols
- U.S. Environmental Protection Agency, Office of Research and Development, National Health and Environmental Effects Research Laboratory, Integrated Systems Toxicology Division, Research Triangle Park, North Carolina
| | - Maria R Hoopes
- U.S. Environmental Protection Agency, Office of Research and Development, National Health and Environmental Effects Research Laboratory, Integrated Systems Toxicology Division, Research Triangle Park, North Carolina
| | - E Sidney Hunter
- U.S. Environmental Protection Agency, Office of Research and Development, National Health and Environmental Effects Research Laboratory, Integrated Systems Toxicology Division, Research Triangle Park, North Carolina
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89
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Abstract
Cancer is a daunting global problem confronting the world's population. The most frequent therapeutic approaches include surgery, chemotherapy, radiotherapy, and more recently immunotherapy. In the case of chemotherapy, patients ultimately develop resistance to both single and multiple chemotherapeutic agents, which can culminate in metastatic disease which is a major cause of patient death from solid tumors. Chemoresistance, a primary cause of treatment failure, is attributed to multiple factors including decreased drug accumulation, reduced drug-target interactions, increased populations of cancer stem cells, enhanced autophagy activity, and reduced apoptosis in cancer cells. Reprogramming tumor cells to undergo drug-induced apoptosis provides a promising and powerful strategy for treating resistant and recurrent neoplastic diseases. This can be achieved by downregulating dysregulated antiapoptotic factors or activation of proapoptotic factors in tumor cells. A major target of dysregulation in cancer cells that can occur during chemoresistance involves altered expression of Bcl-2 family members. Bcl-2 antiapoptotic molecules (Bcl-2, Bcl-xL, and Mcl-1) are frequently upregulated in acquired chemoresistant cancer cells, which block drug-induced apoptosis. We presently overview the potential role of Bcl-2 antiapoptotic proteins in the development of cancer chemoresistance and overview the clinical approaches that use Bcl-2 inhibitors to restore cell death in chemoresistant and recurrent tumors.
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90
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Abdel Gaber SA, Müller P, Zimmermann W, Hüttenberger D, Wittig R, Abdel Kader MH, Stepp H. ABCG2-mediated suppression of chlorin e6 accumulation and photodynamic therapy efficiency in glioblastoma cell lines can be reversed by KO143. JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY B-BIOLOGY 2018; 178:182-191. [DOI: 10.1016/j.jphotobiol.2017.10.035] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/08/2017] [Revised: 10/26/2017] [Accepted: 10/28/2017] [Indexed: 12/21/2022]
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91
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Sivaprakasam S, Bhutia YD, Yang S, Ganapathy V. Short-Chain Fatty Acid Transporters: Role in Colonic Homeostasis. Compr Physiol 2017; 8:299-314. [PMID: 29357130 PMCID: PMC6019286 DOI: 10.1002/cphy.c170014] [Citation(s) in RCA: 157] [Impact Index Per Article: 22.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
Short-chain fatty acids (SCFA; acetate, propionate, and butyrate) are generated in colon by bacterial fermentation of dietary fiber. Though diffusion in protonated form is a significant route, carrier-mediated mechanisms constitute the major route for the entry of SCFA in their anionic form into colonic epithelium. Several transport systems operate in cellular uptake of SCFA. MCT1 (SLC16A1) and MCT4 (SLC16A3) are H+-coupled and mediate electroneutral transport of SCFA (H+: SCFA stoichiometry; 1:1). MCT1 is expressed both in the apical membrane and basolateral membrane of colonic epithelium whereas MCT4 specifically in the basolateral membrane. SMCT1 (SLC5A8) and SMCT2 (SLC5A12) are Na+-coupled; SMCT1-mediated transport is electrogenic (Na+: SCFA stoichiometry; 2:1) whereas SMCT2-mediated transport is electroneutral (Na+: SCFA stoichiometry; 1:1). SMCT1 and SMCT2 are expressed exclusively in the apical membrane. An anion-exchange mechanism also operates in the apical membrane in which SCFA entry in anionic form is coupled to bicarbonate efflux; the molecular identity of this exchanger however remains unknown. All these transporters are subject to regulation, notably by their substrates themselves; this process involves cell-surface receptors with SCFA as signaling molecules. There are significant alterations in the expression of these transporters in ulcerative colitis and colon cancer. The tumor-associated changes occur via transcriptional regulation by p53 and HIF1α and by promoter methylation. As SCFA are obligatory for optimal colonic health, the transporters responsible for the entry and transcellular transfer of these bacterial products in colonic epithelium are critical determinants of colonic function under physiological conditions and in disease states. © 2018 American Physiological Society. Compr Physiol 8:299-314, 2018.
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Affiliation(s)
- Sathish Sivaprakasam
- Department of Cell Biology and Biochemistry, Texas Tech University Health Sciences Center, Lubbock, Texas, USA
| | - Yangzom D. Bhutia
- Department of Cell Biology and Biochemistry, Texas Tech University Health Sciences Center, Lubbock, Texas, USA
| | - Shengping Yang
- Department of Cell Biology and Biochemistry, Texas Tech University Health Sciences Center, Lubbock, Texas, USA
| | - Vadivel Ganapathy
- Department of Cell Biology and Biochemistry, Texas Tech University Health Sciences Center, Lubbock, Texas, USA
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92
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Gynther M, Proietti Silvestri I, Hansen JC, Hansen KB, Malm T, Ishchenko Y, Larsen Y, Han L, Kayser S, Auriola S, Petsalo A, Nielsen B, Pickering DS, Bunch L. Augmentation of Anticancer Drug Efficacy in Murine Hepatocellular Carcinoma Cells by a Peripherally Acting Competitive N-Methyl-d-aspartate (NMDA) Receptor Antagonist. J Med Chem 2017; 60:9885-9904. [PMID: 29205034 DOI: 10.1021/acs.jmedchem.7b01624] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
The most common solid tumors show intrinsic multidrug resistance (MDR) or inevitably acquire such when treated with anticancer drugs. In this work, we describe the discovery of a peripherally restricted, potent, competitive NMDA receptor antagonist 1l by a structure-activity study of the broad-acting ionotropic glutamate receptor antagonist 1a. Subsequently, we demonstrate that 1l augments the cytotoxic action of sorafenib in murine hepatocellular carcinoma cells. The underlying biological mechanism was shown to be interference with the lipid signaling pathway, leading to reduced expression of MDR transporters and thereby an increased accumulation of sorafenib in the cancer cells. Interference with lipid signaling pathways by NMDA receptor inhibition is a novel and promising strategy for reversing transporter-mediated chemoresistance in cancer cells.
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Affiliation(s)
- Mikko Gynther
- School of Pharmacy, Faculty of Health Sciences, University of Eastern Finland , 70211 Kuopio, Finland
| | - Ilaria Proietti Silvestri
- Department of Drug Design and Pharmacology, Faculty of Health and Medical Sciences, University of Copenhagen , Copenhagen 2100, Denmark
| | - Jacob C Hansen
- Department of Drug Design and Pharmacology, Faculty of Health and Medical Sciences, University of Copenhagen , Copenhagen 2100, Denmark
| | - Kasper B Hansen
- Department of Biomedical and Pharmaceutical Sciences and Center for Biomolecular Structure and Dynamics, University of Montana , Missoula, Montana 59812, United States
| | - Tarja Malm
- Department of Neurobiology, A.I. Virtanen Institute for Molecular Sciences, University of Eastern Finland , 70211 Kuopio, Finland
| | - Yevheniia Ishchenko
- Department of Neurobiology, A.I. Virtanen Institute for Molecular Sciences, University of Eastern Finland , 70211 Kuopio, Finland
| | - Younes Larsen
- Department of Drug Design and Pharmacology, Faculty of Health and Medical Sciences, University of Copenhagen , Copenhagen 2100, Denmark
| | - Liwei Han
- Department of Drug Design and Pharmacology, Faculty of Health and Medical Sciences, University of Copenhagen , Copenhagen 2100, Denmark
| | - Silke Kayser
- Department of Drug Design and Pharmacology, Faculty of Health and Medical Sciences, University of Copenhagen , Copenhagen 2100, Denmark
| | - Seppo Auriola
- School of Pharmacy, Faculty of Health Sciences, University of Eastern Finland , 70211 Kuopio, Finland
| | - Aleksanteri Petsalo
- School of Pharmacy, Faculty of Health Sciences, University of Eastern Finland , 70211 Kuopio, Finland
| | - Birgitte Nielsen
- Department of Drug Design and Pharmacology, Faculty of Health and Medical Sciences, University of Copenhagen , Copenhagen 2100, Denmark
| | - Darryl S Pickering
- Department of Drug Design and Pharmacology, Faculty of Health and Medical Sciences, University of Copenhagen , Copenhagen 2100, Denmark
| | - Lennart Bunch
- Department of Drug Design and Pharmacology, Faculty of Health and Medical Sciences, University of Copenhagen , Copenhagen 2100, Denmark
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93
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Brackman DJ, Giacomini KM. Reverse Translational Research of ABCG2 (BCRP) in Human Disease and Drug Response. Clin Pharmacol Ther 2017; 103:233-242. [PMID: 29023674 DOI: 10.1002/cpt.903] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2017] [Revised: 10/05/2017] [Accepted: 10/07/2017] [Indexed: 12/12/2022]
Abstract
Reverse translational research takes a bedside-to-bench approach, using sophisticated basic research to explain the biological mechanisms behind observed clinical data. For transporters, which play a role in human disease and drug response, this approach offers a distinct advantage over the typical translational research, which often falters due to inadequate in vitro and preclinical animal models. Research on ABCG2, which encodes the Breast Cancer Resistance Protein, has benefited immensely from a reverse translational approach due to its broad implications for disease susceptibility and both therapeutic and adverse drug response. In this review, we describe the success of reverse translational research for ABCG2 and opportunities for further studies.
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Affiliation(s)
- Deanna J Brackman
- Department of Bioengineering and Therapeutic Sciences, University of California San Francisco, San Francisco, California, USA
| | - Kathleen M Giacomini
- Department of Bioengineering and Therapeutic Sciences, University of California San Francisco, San Francisco, California, USA.,Institute of Human Genetics, University of California San Francisco, San Francisco, California, USA
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94
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Nakamura M, Fujita K, Toyoda Y, Takada T, Hasegawa H, Ichida K. Investigation of the transport of xanthine dehydrogenase inhibitors by the urate transporter ABCG2. Drug Metab Pharmacokinet 2017; 33:77-81. [PMID: 29342419 DOI: 10.1016/j.dmpk.2017.11.002] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2017] [Revised: 10/02/2017] [Accepted: 11/06/2017] [Indexed: 11/19/2022]
Abstract
Hyperuricemia induces gout and kidney stones and accelerates the progression of renal and cardiovascular diseases. Adenosine 5'-triphosphate-binding cassette subfamily G member 2 (ABCG2) is a urate transporter, and common dysfunctional variants of ABCG2, non-functional Q126X (rs72552713) and semi-functional Q141K (rs2231142), are risk factors for hyperuricemia and gout. A recent genome wide association study suggested that allopurinol, a serum uric acid-lowering drug that inhibits xanthine dehydrogenase, is a potent substrate of ABCG2. In this study, we aimed to examine the transport of xanthine dehydrogenase inhibitors via ABCG2. Our results show that ABCG2 transports oxypurinol, an active metabolite of allopurinol, whereas allopurinol and febuxostat, a new xanthine dehydrogenase inhibitor, are not substrates of ABCG2. The amount of oxypurinol transported by ABCG2 vesicles significantly increased in the presence of ATP, compared to that observed with mock vesicles. Since the half-life of oxypurinol is longer than that of allopurinol, the xanthine dehydrogenase-inhibiting effect of allopurinol mainly depends on its metabolite, oxypurinol. Our results indicate that the serum level of oxypurinol would increase in patients with ABCG2 dysfunction.
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Affiliation(s)
- Makiko Nakamura
- Department of Pathophysiology, Tokyo University of Pharmacy and Life Sciences, 1432-1 Horinouchi, Hachioji, Tokyo, 192-0392, Japan
| | - Kyoko Fujita
- Department of Pathophysiology, Tokyo University of Pharmacy and Life Sciences, 1432-1 Horinouchi, Hachioji, Tokyo, 192-0392, Japan
| | - Yu Toyoda
- Department of Pharmacy, The University of Tokyo Hospital, 7-3-1 Hongo, Bunkyoku, Tokyo, 113-8655, Japan
| | - Tappei Takada
- Department of Pharmacy, The University of Tokyo Hospital, 7-3-1 Hongo, Bunkyoku, Tokyo, 113-8655, Japan
| | - Hiroshi Hasegawa
- Department of Pathophysiology, Tokyo University of Pharmacy and Life Sciences, 1432-1 Horinouchi, Hachioji, Tokyo, 192-0392, Japan
| | - Kimiyoshi Ichida
- Department of Pathophysiology, Tokyo University of Pharmacy and Life Sciences, 1432-1 Horinouchi, Hachioji, Tokyo, 192-0392, Japan.
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95
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Structure-function relationships in ABCG2: insights from molecular dynamics simulations and molecular docking studies. Sci Rep 2017; 7:15534. [PMID: 29138424 PMCID: PMC5686161 DOI: 10.1038/s41598-017-15452-z] [Citation(s) in RCA: 42] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2017] [Accepted: 10/25/2017] [Indexed: 12/29/2022] Open
Abstract
Efflux pumps of the ATP-binding cassette transporters superfamily (ABC transporters) are frequently involved in the multidrug-resistance (MDR) phenomenon in cancer cells. Herein, we describe a new atomistic model for the MDR-related ABCG2 efflux pump, also named breast cancer resistance protein (BCRP), based on the recently published crystallographic structure of the ABCG5/G8 heterodimer sterol transporter, a member of the ABCG family involved in cholesterol homeostasis. By means of molecular dynamics simulations and molecular docking, a far-reaching characterization of the ABCG2 homodimer was obtained. The role of important residues and motifs in the structural stability of the transporter was comprehensively studied and was found to be in good agreement with the available experimental data published in literature. Moreover, structural motifs potentially involved in signal transmission were identified, along with two symmetrical drug-binding sites that are herein described for the first time, in a rational attempt to better understand how drug binding and recognition occurs in ABCG2 homodimeric transporters.
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96
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BCRP/ABCG2 and high-alert medications: Biochemical, pharmacokinetic, pharmacogenetic, and clinical implications. Biochem Pharmacol 2017; 147:201-210. [PMID: 29031817 DOI: 10.1016/j.bcp.2017.10.004] [Citation(s) in RCA: 50] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2017] [Accepted: 10/11/2017] [Indexed: 01/14/2023]
Abstract
The human breast cancer resistance protein (BCRP/ABCG2) is an ATP-binding cassette efflux transporter that uses ATP hydrolysis to expel xenobiotics from cells, including anti-cancer medications. It is expressed in the gastrointestinal tract, liver, kidney, and brain endothelium. Thus, ABCG2 functions as a tissue barrier to drug transport that strongly influences the pharmacokinetics of substrate medications. Genetic polymorphisms of ABCG2 are closely related to inter-individual variations in therapeutic performance. The common single nucleotide polymorphism c.421C>A, p.Q141K reduces cell surface expression of ABCG2 protein, resulting in lower efflux of substrates. Consequently, a higher plasma concentration of substrate is observed in patients carrying an ABCG2 c.421C>A allele. Detailed pharmacokinetic analyses have revealed that altered intestinal absorption is responsible for the distinct pharmacokinetics of ABCG2 substrates in genetic carriers of the ABCG2 c.421C>A polymorphism. Recent studies have focused on the high-alert medications among ABCG2 substrates (defined as those with high risk of adverse events), such as tyrosine kinase inhibitors (TKIs) and direct oral anti-coagulants (DOACs). For these high-alert medications, inter-individual variation may be closely related to the severity of side effects. In addition, ethnic differences in the frequency of ABCG2 c.421C>A have been reported, with markedly higher frequency in East Asian (∼30-60%) than Caucasian and African-American populations (∼5-10%). Therefore, ABCG2 polymorphisms must be considered not only in the drug development phase, but also in clinical practice. In the present review, we provide an update of basic and clinical knowledge on genetic polymorphisms of ABCG2.
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97
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Singh S, Kalia NP, Joshi P, Kumar A, Sharma PR, Kumar A, Bharate SB, Khan IA. Boeravinone B, A Novel Dual Inhibitor of NorA Bacterial Efflux Pump of Staphylococcus aureus and Human P-Glycoprotein, Reduces the Biofilm Formation and Intracellular Invasion of Bacteria. Front Microbiol 2017; 8:1868. [PMID: 29046665 PMCID: PMC5632727 DOI: 10.3389/fmicb.2017.01868] [Citation(s) in RCA: 62] [Impact Index Per Article: 8.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2017] [Accepted: 09/13/2017] [Indexed: 01/07/2023] Open
Abstract
This study elucidated the role of boeravinone B, a NorA multidrug efflux pump inhibitor, in biofilm inhibition. The effects of boeravinone B plus ciprofloxacin, a NorA substrate, were evaluated in NorA-overexpressing, wild-type, and knocked-out Staphylococcus aureus (SA-1199B, SA-1199, and SA-K1758, respectively). The mechanism of action was confirmed using the ethidium bromide accumulation and efflux assay. The role of boeravinone B as a human P-glycoprotein (P-gp) inhibitor was examined in the LS-180 (colon cancer) cell line. Moreover, its role in the inhibition of biofilm formation and intracellular invasion of S. aureus in macrophages was studied. Boeravinone B reduced the minimum inhibitory concentration (MIC) of ciprofloxacin against S. aureus and its methicillin-resistant strains; the effect was stronger in SA-1199B. Furthermore, time–kill kinetics revealed that boeravinone B plus ciprofloxacin, at subinhibitory concentration (0.25 × MIC), is as equipotent as that at the MIC level. This combination also had a reduced mutation prevention concentration. Boeravinone B reduced the efflux of ethidium bromide and increased the accumulation, thus strengthening the role as a NorA inhibitor. Biofilm formation was reduced by four–eightfold of the minimal biofilm inhibitory concentration of ciprofloxacin, effectively preventing bacterial entry into macrophages. Boeravinone B effectively inhibited P-gp with half maximal inhibitory concentration (IC50) of 64.85 μM. The study concluded that boeravinone B not only inhibits the NorA-mediated efflux of fluoroquinolones but also considerably inhibits the biofilm formation of S. aureus. Its P-gp inhibition activity demonstrates its potential as a bioavailability and bioefficacy enhancer.
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Affiliation(s)
- Samsher Singh
- Clinical Microbiology Division, Indian Institute of Integrative Medicine (CSIR), Jammu, India.,Academy of Scientific and Innovative Research (AcSIR), Indian Institute of Integrative Medicine (CSIR), Jammu, India
| | - Nitin P Kalia
- Clinical Microbiology Division, Indian Institute of Integrative Medicine (CSIR), Jammu, India
| | - Prashant Joshi
- Academy of Scientific and Innovative Research (AcSIR), Indian Institute of Integrative Medicine (CSIR), Jammu, India.,Medicinal Chemistry Division, Indian Institute of Integrative Medicine (CSIR), Jammu, India
| | - Ajay Kumar
- Cancer Pharmacology Division, Indian Institute of Integrative Medicine (CSIR)Jammu, India
| | - Parduman R Sharma
- Academy of Scientific and Innovative Research (AcSIR), Indian Institute of Integrative Medicine (CSIR), Jammu, India.,Cancer Pharmacology Division, Indian Institute of Integrative Medicine (CSIR)Jammu, India
| | - Ashok Kumar
- Academy of Scientific and Innovative Research (AcSIR), Indian Institute of Integrative Medicine (CSIR), Jammu, India.,Cancer Pharmacology Division, Indian Institute of Integrative Medicine (CSIR)Jammu, India
| | - Sandip B Bharate
- Academy of Scientific and Innovative Research (AcSIR), Indian Institute of Integrative Medicine (CSIR), Jammu, India.,Medicinal Chemistry Division, Indian Institute of Integrative Medicine (CSIR), Jammu, India
| | - Inshad A Khan
- Clinical Microbiology Division, Indian Institute of Integrative Medicine (CSIR), Jammu, India.,Academy of Scientific and Innovative Research (AcSIR), Indian Institute of Integrative Medicine (CSIR), Jammu, India
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98
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Abstract
Accumulating evidence has demonstrated that human cancers arise from various tissues of origin that initiate from cancer stem cells (CSCs) or cancer-initiating cells. The extrinsic and intrinsic apoptotic pathways are dysregulated in CSCs, and these cells play crucial roles in tumor initiation, progression, cell death resistance, chemo- and radiotherapy resistance, and tumor recurrence. Understanding CSC-specific signaling proteins and pathways is necessary to identify specific therapeutic targets that may lead to the development of more efficient therapies selectively targeting CSCs. Several signaling pathways-including the phosphatidylinositol 3-kinase (PI3K)/Akt/mammalian target of rapamycin (mTOR), maternal embryonic leucine zipper kinase (MELK), NOTCH1, and Wnt/Β-catenin&and expression of the CSC markers CD133, CD24, CD44, Oct4, Sox2, Nanog, and ALDH1A1 maintain CSC properties. Studying such pathways may help to understand CSC biology and lead to the development of potential therapeutic interventions to render CSCs more sensitive to cell death triggered by chemotherapy and radiation therapy. Moreover, recent demonstrations of dedifferentiation of differentiated cancer cells into CSC-like cells have created significant complexity in the CSCs hypothesis. Therefore, any successful therapeutic agent or combination of drugs for cancer therapy must eliminate not only CSCs but differentiated cancer cells and the entire bulk of tumor cells. This review article expands on the CSC hypothesis and paradigm with respect to major signaling pathways and effectors that regulate CSC apoptosis resistance. Moreover, selective CSC apoptotic modulators and their therapeutic potential for making tumors more responsive to therapy are discussed. The use of novel therapies, including small-molecule inhibitors of specific proteins in signaling pathways that regulate stemness, proliferation and migration of CSCs, immunotherapy, and noncoding microRNAs may provide better means of treating CSCs.
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Affiliation(s)
- Ahmad R Safa
- Indiana University Simon Cancer Center and Department of Pharmacology and Toxicology, Indiana University School of Medicine, Indianapolis, IN 46202, USA
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99
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Park JE, Ryoo G, Lee W. Alternative Splicing: Expanding Diversity in Major ABC and SLC Drug Transporters. AAPS JOURNAL 2017; 19:1643-1655. [DOI: 10.1208/s12248-017-0150-0] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/06/2017] [Accepted: 09/10/2017] [Indexed: 01/18/2023]
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100
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Rapp J, Jaromi L, Kvell K, Miskei G, Pongracz JE. WNT signaling - lung cancer is no exception. Respir Res 2017; 18:167. [PMID: 28870231 PMCID: PMC5584342 DOI: 10.1186/s12931-017-0650-6] [Citation(s) in RCA: 61] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2016] [Accepted: 08/27/2017] [Indexed: 02/07/2023] Open
Abstract
Since the initial discovery of the oncogenic activity of WNT ligands our understanding of the complex roles for WNT signaling pathways in lung cancers has increased substantially. In the current review, the various effects of activation and inhibition of the WNT signaling pathways are summarized in the context of lung carcinogenesis. Recent evidence regarding WNT ligand transport mechanisms, the role of WNT signaling in lung cancer angiogenesis and drug transporter regulation and the importance of microRNA and posttranscriptional regulation of WNT signaling are also reviewed.
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Affiliation(s)
- Judit Rapp
- Department of Pharmaceutical Biotechnology, School of Pharmacy, University of Pecs, Pecs, Hungary
- Szentagothai Research Centre, University of Pecs, Pecs, Hungary
| | - Luca Jaromi
- Department of Pharmaceutical Biotechnology, School of Pharmacy, University of Pecs, Pecs, Hungary
- Szentagothai Research Centre, University of Pecs, Pecs, Hungary
| | - Krisztian Kvell
- Department of Pharmaceutical Biotechnology, School of Pharmacy, University of Pecs, Pecs, Hungary
- Szentagothai Research Centre, University of Pecs, Pecs, Hungary
| | - Gyorgy Miskei
- Department of Pharmaceutical Biotechnology, School of Pharmacy, University of Pecs, Pecs, Hungary
- Szentagothai Research Centre, University of Pecs, Pecs, Hungary
| | - Judit E. Pongracz
- Department of Pharmaceutical Biotechnology, School of Pharmacy, University of Pecs, Pecs, Hungary
- Szentagothai Research Centre, University of Pecs, Pecs, Hungary
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