1
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Ibba R, Sestito S, Ambrosio FA, Marchese E, Costa G, Fiorentino FP, Fusi F, Marchesi I, Polini B, Chiellini G, Alcaro S, Piras S, Carta A. Discovery of pyridoquinoxaline-based new P-gp inhibitors as coadjutant against Multi Drug Resistance in cancer. Eur J Med Chem 2024; 276:116647. [PMID: 38981337 DOI: 10.1016/j.ejmech.2024.116647] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2024] [Revised: 06/30/2024] [Accepted: 07/01/2024] [Indexed: 07/11/2024]
Abstract
Multi-drug resistance (MDR) is a serious challenge in contemporary clinical practice and is mostly responsible for the failure of cancer medication therapies. Several experimental evidence links MDR to the overexpression of the drug efflux transporter P-gp, therefore, the discovery of novel P-glycoprotein inhibitors is required to treat or prevent MDR and to improve the absorption of chemotherapy drugs via the gastrointestinal system. In this work, we explored a series of novel pyridoquinoxaline-based derivatives designed from parental compounds, previously proved active in enhancing anticancer drugs in MDR nasopharyngeal carcinoma (KB). Among them, derivative 10d showed the most potent and selective inhibition of fluorescent dye efflux, if compared to reference compounds (MK-571, Novobiocin, Verapamil), and the highest MDR reversal activity when co-administered with the chemotherapeutic agents Vincristine and Etoposide, at non-cytotoxic concentrations. Molecular modelling predicted the two compound 10d binding mode in a ratio of 2:1 with the target protein. No cytotoxicity was observed in healthy microglia cells and off-target investigations showed the absence of CaV1.2 channel blockade. In summary, our findings indicated that 10d could potentially be a novel therapeutic coadjutant by inhibiting P-gp transport function in vitro, thereby reversing cancer multidrug resistance.
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Affiliation(s)
- Roberta Ibba
- Department of Medicine, Surgery and Pharmacy, University of Sassari, 07100, Sassari, Italy.
| | - Simona Sestito
- Department of Chemical, Physical, Mathematical and Natural Sciences, University of Sassari, 07100, Sassari, Italy.
| | | | - Emanuela Marchese
- Department of Health Sciences, University "Magna Græcia" of Catanzaro, Campus "S. Venuta", 88100, Catanzaro, Italy.
| | - Giosuè Costa
- Department of Health Sciences, University "Magna Græcia" of Catanzaro, Campus "S. Venuta", 88100, Catanzaro, Italy; Net4Science Academic Spin-Off, University "Magna Græcia" of Catanzaro, Campus "S. Venuta", 88100, Catanzaro, Italy.
| | | | - Fabio Fusi
- Department of Biotechnologies, Chemistry and Pharmacy, University of Siena, 53100, Siena, Italy.
| | | | - Beatrice Polini
- Department of Pathology, University of Pisa, 56100, Pisa, Italy.
| | - Grazia Chiellini
- Department of Pathology, University of Pisa, 56100, Pisa, Italy.
| | - Stefano Alcaro
- Department of Health Sciences, University "Magna Græcia" of Catanzaro, Campus "S. Venuta", 88100, Catanzaro, Italy; Net4Science Academic Spin-Off, University "Magna Græcia" of Catanzaro, Campus "S. Venuta", 88100, Catanzaro, Italy.
| | - Sandra Piras
- Department of Medicine, Surgery and Pharmacy, University of Sassari, 07100, Sassari, Italy.
| | - Antonio Carta
- Department of Medicine, Surgery and Pharmacy, University of Sassari, 07100, Sassari, Italy.
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2
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Guo Y, Ashrafizadeh M, Tambuwala MM, Ren J, Orive G, Yu G. P-glycoprotein (P-gp)-driven cancer drug resistance: biological profile, non-coding RNAs, drugs and nanomodulators. Drug Discov Today 2024; 29:104161. [PMID: 39245345 DOI: 10.1016/j.drudis.2024.104161] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2024] [Revised: 08/07/2024] [Accepted: 09/04/2024] [Indexed: 09/10/2024]
Abstract
Drug resistance has compromised the efficacy of chemotherapy. The dysregulation of drug transporters including P-glycoprotein (P-gp) can mediate drug resistance through drug efflux. In this review, we highlight the role of P-gp in cancer drug resistance and the related molecular pathways, including phosphoinositide 3-kinase (PI3K)-Akt, phosphatase and tensin homolog (PTEN) and nuclear factor-κB (NF-κB), along with non-coding RNAs (ncRNAs). Extracellular vesicles secreted by the cells can transport ncRNAs and other proteins to change P-gp activity in cancer drug resistance. P-gp requires ATP to function, and the induction of mitochondrial dysfunction or inhibition of glutamine metabolism can impair P-gp function, thus increasing chemosensitivity. Phytochemicals, small molecules and nanoparticles have been introduced as P-gp inhibitors to increase drug sensitivity in human cancers.
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Affiliation(s)
- Yang Guo
- Department of Respiratory and Critical Care Medicine, Shenyang Tenth People's Hospital (Shenyang Chest Hospital), No. 11 Beihai Street, Dadong District, Shenyang 110044, Liaoning, China
| | - Milad Ashrafizadeh
- Department of Cardiology and Shanghai Institute of Cardiovascular Diseases, Zhongshan Hospital Fudan University, Shanghai 200032, China; Department of Radiation Oncology, Shandong Provincial Key Laboratory of Radiation Oncology, Shandong Cancer Hospital and Institute, Shandong First Medical University, Shandong Academy of Medical Sciences, Jinan, Shandong 250000, China
| | - Murtaza M Tambuwala
- Lincoln Medical School, University of Lincoln, Brayford Pool Campus, Lincoln LN6 7TS, UK
| | - Jun Ren
- Department of Cardiology and Shanghai Institute of Cardiovascular Diseases, Zhongshan Hospital Fudan University, Shanghai 200032, China; National Clinical Research Center for Interventional Medicine, Shanghai, 200032, China
| | - Gorka Orive
- NanoBioCel Research Group, School of Pharmacy, University of the Basque Country (UPV/EHU), Vitoria-Gasteiz, Spain; Bioaraba, NanoBioCel Research Group, Vitoria-Gasteiz, Spain; Biomedical Research Networking Centre in Bioengineering, Biomaterials and Nanomedicine (CIBER-BBN), Vitoria-Gasteiz, Spain; University Institute for Regenerative Medicine and Oral Implantology-UIRMI (UPV/EHU-Fundación Eduardo Anitua), 01007 Vitoria-Gasteiz, Spain; Singapore Eye Research Institute, The Academia, 20 College Road, Discovery Tower, Singapore 169856, Singapore.
| | - Guiping Yu
- Department of Cardiothoracic Surgery, The Affiliated Jiangyin Hospital of Nantong University, No. 163 Shoushan Road, Jiangyin, China.
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Morau MV, Seguin CS, Perroud Junior MW, Dagli-Hernandez C, Pincinato EDC, Moriel P. Gefitinib-Induced Severe Dermatological Adverse Reactions: A Case Report and Pharmacogenetic Profile. Pharmaceuticals (Basel) 2024; 17:1040. [PMID: 39204145 PMCID: PMC11359302 DOI: 10.3390/ph17081040] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2024] [Revised: 07/31/2024] [Accepted: 08/06/2024] [Indexed: 09/03/2024] Open
Abstract
Gefitinib is a selective inhibitor of the epidermal growth factor receptor that is used to treat advanced and metastatic non-small cell lung cancer (NSCLC). Dermatological adverse reactions are most commonly associated with gefitinib treatment. The cause of adverse reactions in individuals is multifactorial. Pharmacogenetics is an effective tool to detect such adverse reactions. This case report describes a female patient with NSCLC who was administered gefitinib at a dose of 250 mg/day. However, due to severe adverse dermatological reactions, the treatment was interrupted for 15 d and antibiotic therapy was administered to manage the skin rashes, maculopapular rashes, and hyperpigmentation. Treatment adherence was adequate, and no drug interactions were detected. A pharmacogenetic analysis revealed homozygosity in the ATP-binding cassette (ABC)-B1 rs1128503 (c.1236A>G), heterozygosity in ABCG2 rs2231142 (c.421G>T) and rs2622604 (c.-20+614T>C), and a non-functional variant of the cytochrome P450 family 3, subfamily A, member 5 (CYP3A5). The relationship between altered genetic variants and the presence of adverse reactions induced by gefitinib is still controversial. Overall, this case report highlights the importance of continuing to study pharmacogenetics as predictors of adverse drug reactions.
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Affiliation(s)
- Mariana Vieira Morau
- Faculdade de Ciências Médicas, Universidade Estadual de Campinas, Campinas 13083-887, SP, Brazil; (M.V.M.); (C.S.S.); (M.W.P.J.); (E.d.C.P.)
| | - Cecilia Souto Seguin
- Faculdade de Ciências Médicas, Universidade Estadual de Campinas, Campinas 13083-887, SP, Brazil; (M.V.M.); (C.S.S.); (M.W.P.J.); (E.d.C.P.)
| | - Mauricio Wesley Perroud Junior
- Faculdade de Ciências Médicas, Universidade Estadual de Campinas, Campinas 13083-887, SP, Brazil; (M.V.M.); (C.S.S.); (M.W.P.J.); (E.d.C.P.)
| | - Carolina Dagli-Hernandez
- Faculdade de Ciências Farmacêuticas, Universidade Estadual de Campinas, Campinas 13083-871, SP, Brazil;
| | - Eder de Carvalho Pincinato
- Faculdade de Ciências Médicas, Universidade Estadual de Campinas, Campinas 13083-887, SP, Brazil; (M.V.M.); (C.S.S.); (M.W.P.J.); (E.d.C.P.)
| | - Patricia Moriel
- Faculdade de Ciências Farmacêuticas, Universidade Estadual de Campinas, Campinas 13083-871, SP, Brazil;
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4
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Wang Y, Tu MJ, Yu AM. Efflux ABC transporters in drug disposition and their posttranscriptional gene regulation by microRNAs. Front Pharmacol 2024; 15:1423416. [PMID: 39114355 PMCID: PMC11303158 DOI: 10.3389/fphar.2024.1423416] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2024] [Accepted: 07/11/2024] [Indexed: 08/10/2024] Open
Abstract
ATP-binding cassette (ABC) transporters are transmembrane proteins expressed commonly in metabolic and excretory organs to control xenobiotic or endobiotic disposition and maintain their homeostasis. Changes in ABC transporter expression may directly affect the pharmacokinetics of relevant drugs involving absorption, distribution, metabolism, and excretion (ADME) processes. Indeed, overexpression of efflux ABC transporters in cancer cells or bacteria limits drug exposure and causes therapeutic failure that is known as multidrug resistance (MDR). With the discovery of functional noncoding microRNAs (miRNAs) produced from the genome, many miRNAs have been revealed to govern posttranscriptional gene regulation of ABC transporters, which shall improve our understanding of complex mechanism behind the overexpression of ABC transporters linked to MDR. In this article, we first overview the expression and localization of important ABC transporters in human tissues and their clinical importance regarding ADME as well as MDR. Further, we summarize miRNA-controlled posttranscriptional gene regulation of ABC transporters and effects on ADME and MDR. Additionally, we discuss the development and utilization of novel bioengineered miRNA agents to modulate ABC transporter gene expression and subsequent influence on cellular drug accumulation and chemosensitivity. Findings on posttranscriptional gene regulation of ABC transporters shall not only improve our understanding of mechanisms behind variable ADME but also provide insight into developing new means towards rational and more effective pharmacotherapies.
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Affiliation(s)
| | | | - Ai-Ming Yu
- Department of Biochemistry and Molecular Medicine, School of Medicine, University of California at Davis, Sacramento, CA, United States
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5
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Russell LE, Yadav J, Maldonato BJ, Chien HC, Zou L, Vergara AG, Villavicencio EG. Transporter-mediated drug-drug interactions: regulatory guidelines, in vitro and in vivo methodologies and translation, special populations, and the blood-brain barrier. Drug Metab Rev 2024:1-28. [PMID: 38967415 DOI: 10.1080/03602532.2024.2364591] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2024] [Accepted: 05/31/2024] [Indexed: 07/06/2024]
Abstract
This review, part of a special issue on drug-drug interactions (DDIs) spearheaded by the International Society for the Study of Xenobiotics (ISSX) New Investigators, explores the critical role of drug transporters in absorption, disposition, and clearance in the context of DDIs. Over the past two decades, significant advances have been made in understanding the clinical relevance of these transporters. Current knowledge on key uptake and efflux transporters that affect drug disposition and development is summarized. Regulatory guidelines from the FDA, EMA, and PMDA that inform the evaluation of potential transporter-mediated DDIs are discussed in detail. Methodologies for preclinical and clinical testing to assess potential DDIs are reviewed, with an emphasis on the utility of physiologically based pharmacokinetic (PBPK) modeling. This includes the application of relative abundance and expression factors to predict human pharmacokinetics (PK) using preclinical data, integrating the latest regulatory guidelines. Considerations for assessing transporter-mediated DDIs in special populations, including pediatric, hepatic, and renal impairment groups, are provided. Additionally, the impact of transporters at the blood-brain barrier (BBB) on the disposition of CNS-related drugs is explored. Enhancing the understanding of drug transporters and their role in drug disposition and toxicity can improve efficacy and reduce adverse effects. Continued research is essential to bridge remaining gaps in knowledge, particularly in comparison with cytochrome P450 (CYP) enzymes.
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Affiliation(s)
- Laura E Russell
- Department of Quantitative, Translational, and ADME Sciences, AbbVie Inc, North Chicago, IL, USA
| | - Jaydeep Yadav
- Department of Pharmacokinetics, Dynamics, Metabolism, and Bioanalytics, Merck & Co., Inc, Boston, MA, USA
| | - Benjamin J Maldonato
- Department of Nonclinical Development and Clinical Pharmacology, Revolution Medicines, Inc, Redwood City, CA, USA
| | - Huan-Chieh Chien
- Department of Pharmacokinetics and Drug Metabolism, Amgen Inc, South San Francisco, CA, USA
| | - Ling Zou
- Department of Pharmacokinetics and Drug Metabolism, Amgen Inc, South San Francisco, CA, USA
| | - Ana G Vergara
- Department of Pharmacokinetics, Dynamics, Metabolism, and Bioanalytics, Merck & Co., Inc, Rahway, NJ, USA
| | - Erick G Villavicencio
- Department of Biology-Discovery, Imaging and Functional Genomics, Merck & Co., Inc, Rahway, NJ, USA
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6
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Thévenod F, Lee WK. Cadmium transport by mammalian ATP-binding cassette transporters. Biometals 2024; 37:697-719. [PMID: 38319451 PMCID: PMC11101381 DOI: 10.1007/s10534-024-00582-5] [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: 09/15/2023] [Accepted: 01/04/2024] [Indexed: 02/07/2024]
Abstract
Cellular responses to toxic metals depend on metal accessibility to intracellular targets, reaching interaction sites, and the intracellular metal concentration, which is mainly determined by uptake pathways, binding/sequestration and efflux pathways. ATP-binding cassette (ABC) transporters are ubiquitous in the human body-usually in epithelia-and are responsible for the transfer of indispensable physiological substrates (e.g. lipids and heme), protection against potentially toxic substances, maintenance of fluid composition, and excretion of metabolic waste products. Derailed regulation and gene variants of ABC transporters culminate in a wide array of pathophysiological disease states, such as oncogenic multidrug resistance or cystic fibrosis. Cadmium (Cd) has no known physiological role in mammalians and poses a health risk due to its release into the environment as a result of industrial activities, and eventually passes into the food chain. Epithelial cells, especially within the liver, lungs, gastrointestinal tract and kidneys, are particularly susceptible to the multifaceted effects of Cd because of the plethora of uptake pathways available. Pertinent to their broad substrate spectra, ABC transporters represent a major cellular efflux pathway for Cd and Cd complexes. In this review, we summarize current knowledge concerning transport of Cd and its complexes (mainly Cd bound to glutathione) by the ABC transporters ABCB1 (P-glycoprotein, MDR1), ABCB6, ABCC1 (multidrug resistance related protein 1, MRP1), ABCC7 (cystic fibrosis transmembrane regulator, CFTR), and ABCG2 (breast cancer related protein, BCRP). Potential detoxification strategies underlying ABC transporter-mediated efflux of Cd and Cd complexes are discussed.
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Affiliation(s)
- Frank Thévenod
- Institute for Physiology, Pathophysiology and Toxicology & ZBAF, Witten/Herdecke University, 58453, Witten, Germany
- Physiology and Pathophysiology of Cells and Membranes, Medical School OWL, Bielefeld University, Morgenbreede 1, 33615, Bielefeld, Germany
| | - Wing-Kee Lee
- Physiology and Pathophysiology of Cells and Membranes, Medical School OWL, Bielefeld University, Morgenbreede 1, 33615, Bielefeld, Germany.
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Kita K, Burdowski A. Recent clinical trials and optical control as a potential strategy to develop microtubule-targeting drugs in colorectal cancer management. World J Gastroenterol 2024; 30:1780-1790. [PMID: 38659489 PMCID: PMC11036503 DOI: 10.3748/wjg.v30.i13.1780] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/27/2023] [Revised: 02/08/2024] [Accepted: 03/19/2024] [Indexed: 04/03/2024] Open
Abstract
Colorectal cancer (CRC) has remained the second and the third leading cause of cancer-related death worldwide and in the United States, respectively. Although significant improvement in overall survival has been achieved, death in adult populations under the age of 55 appears to have increased in the past decades. Although new classes of therapeutic strategies such as immunotherapy have emerged, their application is very limited in CRC so far. Microtubule (MT) inhibitors such as taxanes, are not generally successful in CRC. There may be some way to make MT inhibitors work effectively in CRC. One potential advantage that we can take to treat CRC may be the combination of optical techniques coupled to an endoscope or other fiber optics-based devices. A combination of optical devices and photo-activatable drugs may allow us to locally target advanced CRC cells with highly potent MT-targeting drugs. In this Editorial review, we would like to discuss the potential of optogenetic approaches in CRC management.
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Affiliation(s)
- Katsuhiro Kita
- Department of Biology, St. Francis College, Brooklyn, NY 11201, United States
| | - Allen Burdowski
- Department of Biology, St. Francis College, Brooklyn, NY 11201, United States
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8
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Shchulkin AV, Abalenikhina YV, Kosmachevskaya OV, Topunov AF, Yakusheva EN. Regulation of P-Glycoprotein during Oxidative Stress. Antioxidants (Basel) 2024; 13:215. [PMID: 38397813 PMCID: PMC10885963 DOI: 10.3390/antiox13020215] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2023] [Revised: 02/02/2024] [Accepted: 02/05/2024] [Indexed: 02/25/2024] Open
Abstract
P-glycoprotein (Pgp, ABCB1, MDR1) is an efflux transporter protein that removes molecules from the cells (outflow) into the extracellular space. Pgp plays an important role in pharmacokinetics, ensuring the absorption, distribution, and excretion of drugs and its substrates, as well as in the transport of endogenous molecules (steroid and thyroid hormones). It also contributes to tumor cell resistance to chemotherapy. In this review, we summarize the mechanisms of Pgp regulation during oxidative stress. The currently available data suggest that Pgp has a complex variety of regulatory mechanisms under oxidative stress, involving many transcription factors, the main ones being Nrf2 and Nf-kB. These factors often overlap, and some can be activated under certain conditions, such as the deposition of oxidation products, depending on the severity of oxidative stress. In most cases, the expression of Pgp increases due to increased transcription and translation, but under severe oxidative stress, it can also decrease due to the oxidation of amino acids in its molecule. At the same time, Pgp acts as a protector against oxidative stress, eliminating the causative factors and removing its by-products, as well as participating in signaling pathways.
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Affiliation(s)
- Aleksey V. Shchulkin
- Pharmacology Department, Ryazan State Medical University, 390026 Ryazan, Russia; (Y.V.A.); (E.N.Y.)
| | - Yulia V. Abalenikhina
- Pharmacology Department, Ryazan State Medical University, 390026 Ryazan, Russia; (Y.V.A.); (E.N.Y.)
| | - Olga V. Kosmachevskaya
- Bach Institute of Biochemistry, Research Center of Biotechnology, Russian Academy of Sciences, 119071 Moscow, Russia; (O.V.K.); (A.F.T.)
| | - Alexey F. Topunov
- Bach Institute of Biochemistry, Research Center of Biotechnology, Russian Academy of Sciences, 119071 Moscow, Russia; (O.V.K.); (A.F.T.)
| | - Elena N. Yakusheva
- Pharmacology Department, Ryazan State Medical University, 390026 Ryazan, Russia; (Y.V.A.); (E.N.Y.)
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Albadari N, Xie Y, Li W. Deciphering treatment resistance in metastatic colorectal cancer: roles of drug transports, EGFR mutations, and HGF/c-MET signaling. Front Pharmacol 2024; 14:1340401. [PMID: 38269272 PMCID: PMC10806212 DOI: 10.3389/fphar.2023.1340401] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2023] [Accepted: 12/27/2023] [Indexed: 01/26/2024] Open
Abstract
In 2023, colorectal cancer (CRC) is the third most diagnosed malignancy and the third leading cause of cancer death worldwide. At the time of the initial visit, 20% of patients diagnosed with CRC have metastatic CRC (mCRC), and another 25% who present with localized disease will later develop metastases. Despite the improvement in response rates with various modulation strategies such as chemotherapy combined with targeted therapy, radiotherapy, and immunotherapy, the prognosis of mCRC is poor, with a 5-year survival rate of 14%, and the primary reason for treatment failure is believed to be the development of resistance to therapies. Herein, we provide an overview of the main mechanisms of resistance in mCRC and specifically highlight the role of drug transports, EGFR, and HGF/c-MET signaling pathway in mediating mCRC resistance, as well as discuss recent therapeutic approaches to reverse resistance caused by drug transports and resistance to anti-EGFR blockade caused by mutations in EGFR and alteration in HGF/c-MET signaling pathway.
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Affiliation(s)
| | | | - Wei Li
- College of Pharmacy, University of Tennessee Health Science Center, Memphis, TN, United States
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10
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Moulika JS, Kalawat T, Manthri RG, Hulikal N, Kadiyala S, Bhargavi D, Prayaga AK. Role of 99mTc-sestamibi Scintimammography in Predicting Response to Neoadjuvant Chemotherapy in Locally Advanced Breast Cancer: A Prospective Study. Indian J Nucl Med 2023; 38:354-361. [PMID: 38390549 PMCID: PMC10880855 DOI: 10.4103/ijnm.ijnm_131_21] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2021] [Revised: 09/16/2021] [Accepted: 11/01/2023] [Indexed: 02/24/2024] Open
Abstract
Background Neoadjuvant chemotherapy (NACT) is the first line of management for locally advanced breast cancer (LABC). However, chemoresistance is prevalent in 18%-50% of the cases. One of the important and most studied causes of chemoresistance is P-glycoprotein (Pgp) expression. 99mTc-sestamibi scintimammography may serve as a useful imaging tool to predict Pgp expression, thereby response to NACT. Aim The aim was to study the role of 99mTc-sestamibi scintimammography in predicting response to NACT in treatment-naive, biopsy-proven LABC patients. Materials and Methods 99mTc-sestamibi scintimammography (early and delayed images) was performed on a total of 34 patients. Eight patients were lost to follow-up, and only 26 (25 females and 1 male) patients were available for final analysis, with a mean age of 49.7 ± 10.7 years. 99mTc-sestamibi washout rate (WOR) (%) and T/B buildup were calculated. Pre-NACT and Post-NACT tumor sizes were measured clinically, and a % decrease in tumor size was calculated. The WOR and T/B buildup values were correlated with the % decrease in tumor size. Results We found a statistically significant negative correlation between WOR (%) and % decrease in tumor size and a statistically significant positive correlation between T/B buildup and % decrease in tumor size. Furthermore, we found a positive correlation between the early T/B ratio and the Ki-67 index (P = 0.22). Conclusion Early categorization of responders and nonresponders can help in optimal therapy planning. 99mTc-sestamibi scintimammography can serve as an imaging marker for Pgp expression, thereby predicting clinical response to NACT in LABC patients. Further studies with larger sample sizes are warranted to consolidate the above findings.
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Affiliation(s)
- Jeepalem Sai Moulika
- Department of Nuclear Medicine, Sri Venkateswara Institute of Medical Sciences, Tirupati, Andhra Pradesh, India
| | - Tekchand Kalawat
- Department of Nuclear Medicine, Sri Venkateswara Institute of Medical Sciences, Tirupati, Andhra Pradesh, India
| | - Ranadheer Gupta Manthri
- Department of Nuclear Medicine, Sri Venkateswara Institute of Medical Sciences, Tirupati, Andhra Pradesh, India
| | - Narendra Hulikal
- Department of Surgical Oncology, Sri Venkateswara Institute of Medical Sciences, Tirupati, Andhra Pradesh, India
| | - Silpa Kadiyala
- Department of Radiology, Sri Venkateswara Institute of Medical Sciences, Tirupati, Andhra Pradesh, India
| | - D. Bhargavi
- Department of Medical Oncology, Sri Venkateswara Institute of Medical Sciences, Tirupati, Andhra Pradesh, India
| | - Aruna Kumari Prayaga
- Department of Pathology, Sri Venkateswara Institute of Medical Sciences, Tirupati, Andhra Pradesh, India
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Mattioli R, Ilari A, Colotti B, Mosca L, Fazi F, Colotti G. Doxorubicin and other anthracyclines in cancers: Activity, chemoresistance and its overcoming. Mol Aspects Med 2023; 93:101205. [PMID: 37515939 DOI: 10.1016/j.mam.2023.101205] [Citation(s) in RCA: 36] [Impact Index Per Article: 36.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2023] [Revised: 07/15/2023] [Accepted: 07/17/2023] [Indexed: 07/31/2023]
Abstract
Anthracyclines have been important and effective treatments against a number of cancers since their discovery. However, their use in therapy has been complicated by severe side effects and toxicity that occur during or after treatment, including cardiotoxicity. The mode of action of anthracyclines is complex, with several mechanisms proposed. It is possible that their high toxicity is due to the large set of processes involved in anthracycline action. The development of resistance is a major barrier to successful treatment when using anthracyclines. This resistance is based on a series of mechanisms that have been studied and addressed in recent years. This work provides an overview of the anthracyclines used in cancer therapy. It discusses their mechanisms of activity, toxicity, and chemoresistance, as well as the approaches used to improve their activity, decrease their toxicity, and overcome resistance.
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Affiliation(s)
- Roberto Mattioli
- Dept. Biochemical Sciences A. Rossi Fanelli, Sapienza University of Rome, Rome, Italy
| | - Andrea Ilari
- Institute of Molecular Biology and Pathology, Italian National Research Council IBPM-CNR, Rome, Italy
| | - Beatrice Colotti
- Dept. Biochemical Sciences A. Rossi Fanelli, Sapienza University of Rome, Rome, Italy
| | - Luciana Mosca
- Dept. Biochemical Sciences A. Rossi Fanelli, Sapienza University of Rome, Rome, Italy
| | - Francesco Fazi
- Department of Anatomical, Histological, Forensic & Orthopaedic Sciences, Section of Histology and Medical Embryology, Sapienza University of Rome, Rome, Italy
| | - Gianni Colotti
- Institute of Molecular Biology and Pathology, Italian National Research Council IBPM-CNR, Rome, Italy.
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12
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Skinner KT, Palkar AM, Hong AL. Genetics of ABCB1 in Cancer. Cancers (Basel) 2023; 15:4236. [PMID: 37686513 PMCID: PMC10487083 DOI: 10.3390/cancers15174236] [Citation(s) in RCA: 7] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2023] [Revised: 08/10/2023] [Accepted: 08/22/2023] [Indexed: 09/10/2023] Open
Abstract
ABCB1, also known as MDR1, is a gene that encodes P-glycoprotein (P-gp), a membrane-associated ATP-dependent transporter. P-gp is widely expressed in many healthy tissues-in the gastrointestinal tract, liver, kidney, and at the blood-brain barrier. P-gp works to pump xenobiotics such as toxins and drugs out of cells. P-gp is also commonly upregulated across multiple cancer types such as ovarian, breast, and lung. Overexpression of ABCB1 has been linked to the development of chemotherapy resistance across these cancers. In vitro work across a wide range of drug-sensitive and -resistant cancer cell lines has shown that upon treatment with chemotherapeutic agents such as doxorubicin, cisplatin, and paclitaxel, ABCB1 is upregulated. This upregulation is caused in part by a variety of genetic and epigenetic mechanisms. This includes single-nucleotide variants that lead to enhanced P-gp ATPase activity without increasing ABCB1 RNA and protein levels. In this review, we summarize current knowledge of genetic and epigenetic mechanisms leading to ABCB1 upregulation and P-gp-enhanced ATPase activity in the setting of chemotherapy resistance across a variety of cancers.
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Affiliation(s)
- Katie T. Skinner
- Department of Pediatrics, Emory University School of Medicine, Atlanta, GA 30322, USA; (K.T.S.); (A.M.P.)
- Aflac Cancer and Blood Disorders Center, Children’s Healthcare of Atlanta, Atlanta, GA 30322, USA
| | - Antara M. Palkar
- Department of Pediatrics, Emory University School of Medicine, Atlanta, GA 30322, USA; (K.T.S.); (A.M.P.)
- Aflac Cancer and Blood Disorders Center, Children’s Healthcare of Atlanta, Atlanta, GA 30322, USA
| | - Andrew L. Hong
- Department of Pediatrics, Emory University School of Medicine, Atlanta, GA 30322, USA; (K.T.S.); (A.M.P.)
- Aflac Cancer and Blood Disorders Center, Children’s Healthcare of Atlanta, Atlanta, GA 30322, USA
- Winship Cancer Institute, Emory University School of Medicine, Atlanta, GA 30322, USA
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13
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Ahn WS, Kim HD, Kim TS, Kwak MJ, Park YJ, Kim J. Phosphorylation of rpS3 by Lyn increases translation of Multi-Drug Resistance (MDR1) gene. BMB Rep 2023; 56:302-307. [PMID: 36724904 PMCID: PMC10230018] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2022] [Revised: 09/29/2022] [Accepted: 02/01/2023] [Indexed: 02/03/2023] Open
Abstract
Lyn, a tyrosine kinase that is activated by double-stranded DNAdamaging agents, is involved in various signaling pathways, such as proliferation, apoptosis, and DNA repair. Ribosomal protein S3 (RpS3) is involved in protein biosynthesis as a component of the ribosome complex and possesses endonuclease activity to repair damaged DNA. Herein, we demonstrated that rpS3 and Lyn interact with each other, and the phosphorylation of rpS3 by Lyn, causing ribosome heterogeneity, upregulates the translation of p-glycoprotein, which is a gene product of multidrug resistance gene 1. In addition, we found that two different regions of the rpS3 protein are associated with the SH1 and SH3 domains of Lyn. An in vitro immunocomplex kinase assay indicated that the rpS3 protein acts as a substrate for Lyn, which phosphorylates the Y167 residue of rpS3. Furthermore, by adding various kinase inhibitors, we confirmed that the phosphorylation status of rpS3 was regulated by both Lyn and doxorubicin, and the phosphorylation of rpS3 by Lyn increased drug resistance in cells by upregulating p-glycoprotein translation. [BMB Reports 2023; 56(5): 302-307].
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Affiliation(s)
- Woo Sung Ahn
- Laboratory of Biochemistry, Division of Life Sciences, Korea University, Seoul 02841, Korea
| | - Hag Dong Kim
- HAEL Lab, TechnoComplex, Korea University, Seoul 02841, Korea
| | - Tae Sung Kim
- Laboratory of Biochemistry, Division of Life Sciences, Korea University, Seoul 02841, Korea
| | - Myoung Jin Kwak
- Laboratory of Biochemistry, Division of Life Sciences, Korea University, Seoul 02841, Korea
- HAEL Lab, TechnoComplex, Korea University, Seoul 02841, Korea
| | - Yong Jun Park
- Laboratory of Biochemistry, Division of Life Sciences, Korea University, Seoul 02841, Korea
- HAEL Lab, TechnoComplex, Korea University, Seoul 02841, Korea
| | - Joon Kim
- Laboratory of Biochemistry, Division of Life Sciences, Korea University, Seoul 02841, Korea
- HAEL Lab, TechnoComplex, Korea University, Seoul 02841, Korea
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14
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Calabrese EJ, Agathokleous E, Dhawan G, Kapoor R, Dhawan V, Manes PK, Calabrese V. Nitric oxide and hormesis. Nitric Oxide 2023; 133:1-17. [PMID: 36764605 DOI: 10.1016/j.niox.2023.02.001] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2022] [Revised: 01/20/2023] [Accepted: 02/05/2023] [Indexed: 02/10/2023]
Abstract
This present paper provides an assessment of the occurrence of nitric oxide (NO)-induced hormetic-biphasic dose/concentration relationships in biomedical research. A substantial reporting of such NO-induced hormetic effects was identified with particular focus on wound healing, tumor promotion, and sperm biology, including mechanistic assessment and potential for translational applications. Numerous other NO-induced hormetic effects have been reported, but require more development prior to translational applications. The extensive documentation of NO-induced biphasic responses, across numerous organs (e.g., bone, cardiovascular, immune, intestine, and neuronal) and cell types, suggests that NO-induced biological activities are substantially mediated via hormetic processes. These observations are particularly important because broad areas of NO biology are constrained by the quantitative features of the hormetic response. This determines the amplitude and width of the low dose stimulation, affecting numerous biomedical implications, study design features (e.g., number of doses, dose spacing, sample sizes, statistical power), and the potential success of clinical trials.
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Affiliation(s)
- Edward J Calabrese
- Department of Environmental Health Sciences, Morrill I, N344, University of Massachusetts, Amherst, MA, 01003, USA.
| | - Evgenios Agathokleous
- School of Applied Meteorology, Nanjing University of Information Science & Technology, Nanjing, 210044, China.
| | | | - Rachna Kapoor
- Saint Francis Hospital and Medical Center, Hartford, CT, USA.
| | - Vikas Dhawan
- Department of Surgery, Indian Naval Ship Hospital, Mumbai, India.
| | | | - Vittorio Calabrese
- Department of Biomedical and Biotechnological Sciences, School of Medicine University of Catania, Via Santa Sofia 97, Catania, 95123, Italy.
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15
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Ibrahim MAA, Abdeljawaad KAA, Jaragh-Alhadad LA, Oraby HF, Atia MAM, Alzahrani OR, Mekhemer GAH, Moustafa MF, Shawky AM, Sidhom PA, Abdelrahman AHM. Potential drug candidates as P-glycoprotein inhibitors to reverse multidrug resistance in cancer: an in silico drug discovery study. J Biomol Struct Dyn 2023; 41:13977-13992. [PMID: 36883864 DOI: 10.1080/07391102.2023.2176360] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2022] [Accepted: 01/29/2023] [Indexed: 03/09/2023]
Abstract
The failure of chemotherapy in the treatment of carcinoma is mainly due to the development of multidrug resistance (MDR), which is largely caused by the overexpression of P-glycoprotein (P-gp/ABCB1/MDR1). Until recently, the 3D structure of the P-gp transporter has not been experimentally resolved, which restricted the discovery of prospective P-gp inhibitors utilizing in silico techniques. In this study, the binding energies of 512 drug candidates in clinical or investigational stages were assessed as potential P-gp inhibitors employing in silico methods. On the basis of the available experimental data, the performance of the AutoDock4.2.6 software to predict the drug-P-gp binding mode was initially validated. Molecular docking and molecular dynamics (MD) simulations combined with molecular mechanics-generalized Born surface area (MM-GBSA) binding energy computations were subsequently conducted to screen the investigated drug candidates. Based on the current results, five promising drug candidates, namely valspodar, dactinomycin, elbasvir, temsirolimus, and sirolimus, showed promising binding energies against P-gp transporter with ΔGbinding values of -126.7, -112.1, -111.9, -102.9, and -101.4 kcal/mol, respectively. The post-MD analyses revealed the energetical and structural stabilities of the identified drug candidates in complex with the P-gp transporter. Furthermore, in order to mimic the physiological conditions, the potent drugs complexed with the P-gp were subjected to 100 ns MD simulations in an explicit membrane-water environment. The pharmacokinetic properties of the identified drugs were predicted and demonstrated good ADMET characteristics. Overall, these results indicated that valspodar, dactinomycin, elbasvir, temsirolimus, and sirolimus hold promise as prospective P-gp inhibitors and warrant further invitro/invivo investigations.
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Affiliation(s)
- Mahmoud A A Ibrahim
- Computational Chemistry Laboratory, Chemistry Department, Faculty of Science, Minia University, Minia, Egypt
- School of Health Sciences, University of KwaZulu-Natal, Westville, Durban, South Africa
| | - Khlood A A Abdeljawaad
- Computational Chemistry Laboratory, Chemistry Department, Faculty of Science, Minia University, Minia, Egypt
| | | | - Hesham Farouk Oraby
- Deanship of Scientific Research, Umm Al-Qura University, Makkah, Saudi Arabia
| | - Mohamed A M Atia
- Molecular Genetics and Genome Mapping Laboratory, Genome Mapping Department, Agricultural Genetic Engineering Research Institute (AGERI), ARC, Giza, Egypt
| | - Othman R Alzahrani
- Department of Biology, Faculty of Sciences, University of Tabuk, Tabuk, Saudi Arabia
| | - Gamal A H Mekhemer
- Computational Chemistry Laboratory, Chemistry Department, Faculty of Science, Minia University, Minia, Egypt
| | - Mahmoud F Moustafa
- Department of Biology, College of Science, King Khalid University, Abha, Saudi Arabia
- Department of Botany and Microbiology, Faculty of Science, South Valley University, Qena, Egypt
| | - Ahmed M Shawky
- Science and Technology Unit (STU), Umm Al-Qura University, Makkah, Saudi Arabia
| | - Peter A Sidhom
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy, Tanta University, Tanta, Egypt
| | - Alaa H M Abdelrahman
- Computational Chemistry Laboratory, Chemistry Department, Faculty of Science, Minia University, Minia, Egypt
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16
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Recent advances in the strategic incorporation of fluorine into new-generation taxoid anticancer agents. J Fluor Chem 2023. [DOI: 10.1016/j.jfluchem.2023.110106] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/25/2023]
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17
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Nielsen SSE, Holst MR, Langthaler K, Bruun EH, Brodin B, Nielsen MS. Apicobasal transferrin receptor localization and trafficking in brain capillary endothelial cells. Fluids Barriers CNS 2023; 20:2. [PMID: 36624498 PMCID: PMC9830855 DOI: 10.1186/s12987-022-00404-1] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2022] [Accepted: 12/28/2022] [Indexed: 01/11/2023] Open
Abstract
The detailed mechanisms by which the transferrin receptor (TfR) and associated ligands traffic across brain capillary endothelial cells (BECs) of the CNS-protective blood-brain barrier constitute an important knowledge gap within maintenance and regulation of brain iron homeostasis. This knowledge gap also presents a major obstacle in research aiming to develop strategies for efficient receptor-mediated drug delivery to the brain. While TfR-mediated trafficking from blood to brain have been widely studied, investigation of TfR-mediated trafficking from brain to blood has been limited. In this study we investigated TfR distribution on the apical and basal plasma membranes of BECs using expansion microscopy, enabling sufficient resolution to separate the cellular plasma membranes of these morphological flat cells, and verifying both apical and basal TfR membrane domain localization. Using immunofluorescence-based transcellular transport studies, we delineated endosomal sorting of TfR endocytosed from the apical and basal membrane, respectively, as well as bi-directional TfR transcellular transport capability. The findings indicate different intracellular sorting mechanisms of TfR, depending on the apicobasal trafficking direction across the BBB, with the highest transcytosis capacity in the brain-to-blood direction. These results are of high importance for the current understanding of brain iron homeostasis. Also, the high level of TfR trafficking from the basal to apical membrane of BECs potentially explains the low transcytosis which are observed for the TfR-targeted therapeutics to the brain parenchyma.
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Affiliation(s)
- Simone S. E. Nielsen
- grid.7048.b0000 0001 1956 2722Department of Biomedicine, Faculty of Health, Aarhus University, 8000 Aarhus C, Denmark
| | - Mikkel R. Holst
- grid.7048.b0000 0001 1956 2722Department of Biomedicine, Faculty of Health, Aarhus University, 8000 Aarhus C, Denmark
| | - Kristine Langthaler
- grid.5254.60000 0001 0674 042XCNS Drug Delivery and Barrier Modelling, University of Copenhagen, Copenhagen, Denmark ,grid.424580.f0000 0004 0476 7612Translational DMPK, H. Lundbeck A/S, Copenhagen, Denmark
| | - Elisabeth Helena Bruun
- grid.7048.b0000 0001 1956 2722Department of Biomedicine, Faculty of Health, Aarhus University, 8000 Aarhus C, Denmark
| | - Birger Brodin
- grid.5254.60000 0001 0674 042XDepartment of Pharmacy, Faculty of Health and Medical Sciences, University of Copenhagen, 2100 Copenhagen, Denmark
| | - Morten S. Nielsen
- grid.7048.b0000 0001 1956 2722Department of Biomedicine, Faculty of Health, Aarhus University, 8000 Aarhus C, Denmark
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18
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Shchulkin AV, Abalenikhina YV, Mylnikov PY, Chernykh IV, Yakusheva EN. Assessment of Malondialdehyde Belonging to Modulators and Substrates of the P-Glycoprotein Transporter Protein. DOKL BIOCHEM BIOPHYS 2022; 507:247-255. [PMID: 36786982 DOI: 10.1134/s1607672922060096] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2022] [Revised: 07/15/2022] [Accepted: 07/18/2022] [Indexed: 02/15/2023]
Abstract
In the study on cells of the Caco-2 line, the affiliation of malondialdehyde (MDA) to modulators and substrates of P-glycoprotein (Pgp) was assessed, and the biological role of Pgp in conditions of oxidative stress (OS) was studied. MDA was used at concentrations of 10, 50, 100, and 150 μM; OS was simulated by incubation with hydrogen peroxide (H2O2) at concentrations of 0.1-100 μM for 24 h. The relative amount of Pgp was evaluated by the Western blot hybridization, and the activity was estimated by the transport of its substrate fexofenadine (HPLC with UV detection, HPLC MS/MS). In this study, it was shown that MDA at concentrations of 10 and 50 μM and exposure duration of 24 h increases the relative amount and activity of Pgp by acting through CAR and PXR, and MDA can be transported by Pgp. The induction of Pgp under the action of MDA during the development of OS can have a protective significance, ensuring the removal of the peroxidation product from cells into the extracellular space and thereby increasing the viability of cells.
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Ghatak S, Hascall VC, Karamanos N, Markwald RR, Misra S. Chemotherapy induces feedback up-regulation of CD44v6 in colorectal cancer initiating cells through β-catenin/MDR1 signaling to sustain chemoresistance. Front Oncol 2022; 12:906260. [PMID: 36330477 PMCID: PMC9623568 DOI: 10.3389/fonc.2022.906260] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2022] [Accepted: 08/15/2022] [Indexed: 08/05/2023] Open
Abstract
Chemoresistance in colorectal cancer initiating cells (CICs) involves the sustained activation of multiple drug resistance (MDR) and WNT/β-catenin signaling pathways, as well as of alternatively spliced-isoforms of CD44 containing variable exon-6 (CD44v6). In spite of its importance, mechanisms underlying the sustained activity of WNT/β-catenin signaling have remained elusive. The presence of binding elements of the β-catenin-interacting transcription factor TCF4 in the MDR1 and CD44 promoters suggests that crosstalk between WNT/β-catenin/TCF4-activation and the expression of the CD44v6 isoform mediated by FOLFOX, a first-line chemotherapeutic agent for colorectal cancer, could be a fundamental mechanism of FOLFOX resistance. Our results identify that FOLFOX treatment induced WNT3A secretion, which stimulated a positive feedback loop coupling β-catenin signaling and CD44v6 splicing. In conjunction with FOLFOX induced WNT3A signal, specific CD44v6 variants produced by alternative splicing subsequently enhance the late wave of WNT/β-catenin activation to facilitate cell cycle progression. Moreover, we revealed that FOLFOX-mediated sustained WNT signal requires the formation of a CD44v6-LRP6-signalosome in caveolin microdomains, which leads to increased FOLFOX efflux. FOLFOX-resistance in colorectal CICs occurs in the absence of tumor-suppressor disabled-2 (DAB2), an inhibitor of WNT/β-catenin signaling. Conversely, in sensitive cells, DAB2 inhibition of WNT-signaling requires interaction with a clathrin containing CD44v6-LRP6-signalosome. Furthermore, full-length CD44v6, once internalized through the caveolin-signalosome, is translocated to the nucleus where in complex with TCF4, it binds to β-catenin/TCF4-regulated MDR1, or to CD44 promoters, which leads to FOLFOX-resistance and CD44v6 transcription through transcriptional-reprogramming. These findings provide evidence that targeting CD44v6-mediated LRP6/β-catenin-signaling and drug efflux may represent a novel approach to overcome FOLFOX resistance and inhibit tumor progression in colorectal CICs. Thus, sustained drug resistance in colorectal CICs is mediated by overexpression of CD44v6, which is both a functional biomarker and a therapeutic target in colorectal cancer.
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Affiliation(s)
- Shibnath Ghatak
- Department of Regenerative Medicine and Cell Biology, Medical University of South Carolina, Charleston, SC, United States
- Department Natural Sciences, Trident Technical College, North Charleston, SC, United States
| | - Vincent C. Hascall
- Department of Biomedical Engineering/ND20, Cleveland Clinic, Cleveland, OH, United States
| | - Nikos Karamanos
- University of Patras, Matrix Pathobiology Res. Group, Department of Chemistry, Patras, Greece
| | - Roger R. Markwald
- Department of Regenerative Medicine and Cell Biology, Medical University of South Carolina, Charleston, SC, United States
| | - Suniti Misra
- Department of Regenerative Medicine and Cell Biology, Medical University of South Carolina, Charleston, SC, United States
- Department Natural Sciences, Trident Technical College, North Charleston, SC, United States
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20
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Marin JJG, Monte MJ, Macias RIR, Romero MR, Herraez E, Asensio M, Ortiz-Rivero S, Cives-Losada C, Di Giacomo S, Gonzalez-Gallego J, Mauriz JL, Efferth T, Briz O. Expression of Chemoresistance-Associated ABC Proteins in Hepatobiliary, Pancreatic and Gastrointestinal Cancers. Cancers (Basel) 2022; 14:cancers14143524. [PMID: 35884584 PMCID: PMC9320734 DOI: 10.3390/cancers14143524] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2022] [Revised: 07/14/2022] [Accepted: 07/14/2022] [Indexed: 11/16/2022] Open
Abstract
Simple Summary One-third of the approximately 10 million deaths yearly caused by cancer worldwide are due to hepatobiliary, pancreatic, and gastrointestinal tumors. One primary reason for this high mortality is the lack of response of these cancers to pharmacological treatment. More than 100 genes have been identified as responsible for seven mechanisms of chemoresistance, but only a few of them play a critical role. These include ABC proteins (mainly MDR1, MRP1-6, and BCRP), whose expression pattern greatly determines the individual sensitivity of each tumor to pharmacotherapy. Abstract Hepatobiliary, pancreatic, and gastrointestinal cancers account for 36% of the ten million deaths caused by cancer worldwide every year. The two main reasons for this high mortality are their late diagnosis and their high refractoriness to pharmacological treatments, regardless of whether these are based on classical chemotherapeutic agents, targeted drugs, or newer immunomodulators. Mechanisms of chemoresistance (MOC) defining the multidrug resistance (MDR) phenotype of each tumor depend on the synergic function of proteins encoded by more than one hundred genes classified into seven groups (MOC1-7). Among them, the efflux of active agents from cancer cells across the plasma membrane caused by members of the superfamily of ATP-binding cassette (ABC) proteins (MOC-1b) plays a crucial role in determining tumor MDR. Although seven families of human ABC proteins are known, only a few pumps (mainly MDR1, MRP1-6, and BCRP) have been associated with reducing drug content and hence inducing chemoresistance in hepatobiliary, pancreatic, and gastrointestinal cancer cells. The present descriptive review, which compiles the updated information on the expression of these ABC proteins, will be helpful because there is still some confusion on the actual relevance of these pumps in response to pharmacological regimens currently used in treating these cancers. Moreover, we aim to define the MOC pattern on a tumor-by-tumor basis, even in a dynamic way, because it can vary during tumor progression and in response to chemotherapy. This information is indispensable for developing novel strategies for sensitization.
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Affiliation(s)
- Jose J. G. Marin
- Experimental Hepatology and Drug Targeting (HEVEPHARM) Group, University of Salamanca, IBSAL, 37007 Salamanca, Spain; (M.J.M.); (R.I.R.M.); (M.R.R.); (E.H.); (M.A.); (S.O.-R.); (C.C.-L.)
- Centro de Investigación Biomédica en Red de Enfermedades Hepáticas y Digestivas (CIBERehd), Carlos III National Institute of Health, 28029 Madrid, Spain; (J.G.-G.); (J.L.M.)
- Correspondence: (J.J.G.M.); (O.B.); Tel.: +34-663182872 (J.J.G.M.); +34-663056225 (O.B.)
| | - Maria J. Monte
- Experimental Hepatology and Drug Targeting (HEVEPHARM) Group, University of Salamanca, IBSAL, 37007 Salamanca, Spain; (M.J.M.); (R.I.R.M.); (M.R.R.); (E.H.); (M.A.); (S.O.-R.); (C.C.-L.)
- Centro de Investigación Biomédica en Red de Enfermedades Hepáticas y Digestivas (CIBERehd), Carlos III National Institute of Health, 28029 Madrid, Spain; (J.G.-G.); (J.L.M.)
| | - Rocio I. R. Macias
- Experimental Hepatology and Drug Targeting (HEVEPHARM) Group, University of Salamanca, IBSAL, 37007 Salamanca, Spain; (M.J.M.); (R.I.R.M.); (M.R.R.); (E.H.); (M.A.); (S.O.-R.); (C.C.-L.)
- Centro de Investigación Biomédica en Red de Enfermedades Hepáticas y Digestivas (CIBERehd), Carlos III National Institute of Health, 28029 Madrid, Spain; (J.G.-G.); (J.L.M.)
| | - Marta R. Romero
- Experimental Hepatology and Drug Targeting (HEVEPHARM) Group, University of Salamanca, IBSAL, 37007 Salamanca, Spain; (M.J.M.); (R.I.R.M.); (M.R.R.); (E.H.); (M.A.); (S.O.-R.); (C.C.-L.)
- Centro de Investigación Biomédica en Red de Enfermedades Hepáticas y Digestivas (CIBERehd), Carlos III National Institute of Health, 28029 Madrid, Spain; (J.G.-G.); (J.L.M.)
| | - Elisa Herraez
- Experimental Hepatology and Drug Targeting (HEVEPHARM) Group, University of Salamanca, IBSAL, 37007 Salamanca, Spain; (M.J.M.); (R.I.R.M.); (M.R.R.); (E.H.); (M.A.); (S.O.-R.); (C.C.-L.)
- Centro de Investigación Biomédica en Red de Enfermedades Hepáticas y Digestivas (CIBERehd), Carlos III National Institute of Health, 28029 Madrid, Spain; (J.G.-G.); (J.L.M.)
| | - Maitane Asensio
- Experimental Hepatology and Drug Targeting (HEVEPHARM) Group, University of Salamanca, IBSAL, 37007 Salamanca, Spain; (M.J.M.); (R.I.R.M.); (M.R.R.); (E.H.); (M.A.); (S.O.-R.); (C.C.-L.)
- Centro de Investigación Biomédica en Red de Enfermedades Hepáticas y Digestivas (CIBERehd), Carlos III National Institute of Health, 28029 Madrid, Spain; (J.G.-G.); (J.L.M.)
| | - Sara Ortiz-Rivero
- Experimental Hepatology and Drug Targeting (HEVEPHARM) Group, University of Salamanca, IBSAL, 37007 Salamanca, Spain; (M.J.M.); (R.I.R.M.); (M.R.R.); (E.H.); (M.A.); (S.O.-R.); (C.C.-L.)
- Centro de Investigación Biomédica en Red de Enfermedades Hepáticas y Digestivas (CIBERehd), Carlos III National Institute of Health, 28029 Madrid, Spain; (J.G.-G.); (J.L.M.)
| | - Candela Cives-Losada
- Experimental Hepatology and Drug Targeting (HEVEPHARM) Group, University of Salamanca, IBSAL, 37007 Salamanca, Spain; (M.J.M.); (R.I.R.M.); (M.R.R.); (E.H.); (M.A.); (S.O.-R.); (C.C.-L.)
| | - Silvia Di Giacomo
- Department of Physiology and Pharmacology “Vittorio Erspamer”, Sapienza University of Rome, 00185 Rome, Italy;
| | - Javier Gonzalez-Gallego
- Centro de Investigación Biomédica en Red de Enfermedades Hepáticas y Digestivas (CIBERehd), Carlos III National Institute of Health, 28029 Madrid, Spain; (J.G.-G.); (J.L.M.)
- Institute of Biomedicine (IBIOMED), University of León, Campus of Vegazana s/n, 24071 Leon, Spain
| | - Jose L. Mauriz
- Centro de Investigación Biomédica en Red de Enfermedades Hepáticas y Digestivas (CIBERehd), Carlos III National Institute of Health, 28029 Madrid, Spain; (J.G.-G.); (J.L.M.)
- Institute of Biomedicine (IBIOMED), University of León, Campus of Vegazana s/n, 24071 Leon, Spain
| | - Thomas Efferth
- Department of Pharmaceutical Biology, Institute of Pharmaceutical and Biomedical Sciences, Johannes Gutenberg University, Staudinger Weg 5, 55128 Mainz, Germany;
| | - Oscar Briz
- Experimental Hepatology and Drug Targeting (HEVEPHARM) Group, University of Salamanca, IBSAL, 37007 Salamanca, Spain; (M.J.M.); (R.I.R.M.); (M.R.R.); (E.H.); (M.A.); (S.O.-R.); (C.C.-L.)
- Centro de Investigación Biomédica en Red de Enfermedades Hepáticas y Digestivas (CIBERehd), Carlos III National Institute of Health, 28029 Madrid, Spain; (J.G.-G.); (J.L.M.)
- Correspondence: (J.J.G.M.); (O.B.); Tel.: +34-663182872 (J.J.G.M.); +34-663056225 (O.B.)
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21
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Saeed MEM, Boulos JC, Machel K, Andabili N, Marouni T, Roth W, Efferth T. Expression of the Stem Cell Marker ABCB5 in Normal and Tumor Tissues. In Vivo 2022; 36:1651-1666. [PMID: 35738589 DOI: 10.21873/invivo.12877] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2022] [Revised: 04/05/2022] [Accepted: 04/12/2022] [Indexed: 12/17/2022]
Abstract
BACKGROUND/AIM The ATP-binding cassette subfamily B member 5 (ABCB5) transporter plays a pivotal role in melanocyte progenitor cell fusion and has been identified as a tumor-initiating cell marker. In this study, we determined ABCB5 expression in normal tissues among various species, i.e., Homo sapiens, Mus musculus (mouse), Rattus norvegicus (rat), Sus scrofa domesticus (pig), Gallus gallus (chicken), Anser anser (goose), Poecilia reticulata (Guppy fish), and Lumbricus terrestris (earthworm), as well as 426 biopsies of different human tumor types (colorectal, cervical, endometrium, vaginal, nasopharyngeal, kidney, breast, colon, prostate, pancreas, lung, gallbladder, bladder, brain, liver, skin, small intestine, testis, tonsil, uterus, thyroid, stomach, esophagus, fallopian, parotid, and ovary). MATERIALS AND METHODS Using immunohistochemical staining, ABCB5 expression was detected and evaluated in formalin-fixed, paraffin-embedded sections. RESULTS High ABCB5 expression was found in normal tissues in specialized cells with secretory and excretory functions, chorionic villi of the placenta, hepatocytes, and blood-tissue barrier sites in the brain and testis. Besides, heterogeneous expression of ABCB5 was also observed in many different tumor types derived from breast, endometrium, ovary, uterus, cervix, prostate, lung, brain, colon, liver, nasopharynx, and others. CONCLUSION The localization of ABCB5 in different normal tissues suggests that this protein has an excretory pumping role for physiological metabolites and xenobiotics. This physiological role highlighted its possible impact on the development of multidrug resistance in tumors. Further studies are required to establish the possible clinical significance of ABCB5 as a predictive marker for drug resistance and as a prognostic marker for patient survival.
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Affiliation(s)
- Mohamed E M Saeed
- Department of Pharmaceutical Biology, Institute of Pharmaceutical and Biomedical Sciences, Johannes Gutenberg University, Mainz, Germany
| | - Joelle C Boulos
- Department of Pharmaceutical Biology, Institute of Pharmaceutical and Biomedical Sciences, Johannes Gutenberg University, Mainz, Germany
| | - Kevin Machel
- Department of Pharmaceutical Biology, Institute of Pharmaceutical and Biomedical Sciences, Johannes Gutenberg University, Mainz, Germany
| | - Nasim Andabili
- Department of Pharmaceutical Biology, Institute of Pharmaceutical and Biomedical Sciences, Johannes Gutenberg University, Mainz, Germany
| | - Thamail Marouni
- Department of Pharmaceutical Biology, Institute of Pharmaceutical and Biomedical Sciences, Johannes Gutenberg University, Mainz, Germany
| | - Wilfried Roth
- Institute of Pathology, University Medical Center of the Johannes Gutenberg University Mainz, Mainz, Germany
| | - Thomas Efferth
- Department of Pharmaceutical Biology, Institute of Pharmaceutical and Biomedical Sciences, Johannes Gutenberg University, Mainz, Germany;
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22
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Insights into the Possible Molecular Mechanisms of Resistance to PARP Inhibitors. Cancers (Basel) 2022; 14:cancers14112804. [PMID: 35681784 PMCID: PMC9179506 DOI: 10.3390/cancers14112804] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2022] [Revised: 06/02/2022] [Accepted: 06/03/2022] [Indexed: 12/12/2022] Open
Abstract
Simple Summary The increasingly wide use of PARP inhibitors in breast, ovarian, pancreatic, and prostate cancers harbouring a pathogenic variant in BRCA1 or BRCA2 has highlighted the problem of resistance to therapy. This review summarises the complex interactions between PARP1, cell cycle regulation, response to stress replication, homologous recombination, and other DNA damage repair pathways in the setting of BRCA1/2 mutated cancers that could explain the development of primary or secondary resistance to PARP inhibitors. Abstract PARP1 enzyme plays an important role in DNA damage recognition and signalling. PARP inhibitors are approved in breast, ovarian, pancreatic, and prostate cancers harbouring a pathogenic variant in BRCA1 or BRCA2, where PARP1 inhibition results mainly in synthetic lethality in cells with impaired homologous recombination. However, the increasingly wide use of PARP inhibitors in clinical practice has highlighted the problem of resistance to therapy. Several different mechanisms of resistance have been proposed, although only the acquisition of secondary mutations in BRCA1/2 has been clinically proved. The aim of this review is to outline the key molecular findings that could explain the development of primary or secondary resistance to PARP inhibitors, analysing the complex interactions between PARP1, cell cycle regulation, PI3K/AKT signalling, response to stress replication, homologous recombination, and other DNA damage repair pathways in the setting of BRCA1/2 mutated cancers.
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23
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Li L, Liu R, Peng C, Chen X, Li J. Pharmacogenomics for the efficacy and side effects of antihistamines. Exp Dermatol 2022; 31:993-1004. [PMID: 35538735 DOI: 10.1111/exd.14602] [Citation(s) in RCA: 16] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2022] [Revised: 05/01/2022] [Accepted: 05/09/2022] [Indexed: 11/27/2022]
Abstract
Antihistamines, especially H1 antihistamines, are widely used in the treatment of allergic diseases such as urticaria and allergic rhinitis, mainly for reversing elevated histamine and anti-allergic effects. Antihistamines are generally safe, but some patients experience adverse reactions, such as cardiotoxicity, central inhibition, and anticholinergic effects. There are also individual differences in antihistamine efficacy in clinical practice. The concept of individualized medicine has been deeply rooted in people's minds since it was put forward. Pharmacogenomics is the study of the role of inheritance in individual variations in drug response. In recent decades, pharmacogenomics has been developing rapidly, which provides new ideas for individualized medicine. Polymorphisms in the genes encoding metabolic enzymes, transporters, and target receptors have been shown to affect the efficacy of antihistamines. In addition, recent evidence suggests that gene polymorphisms influence urticaria susceptibility and antihistamine therapy. Here, we summarize current reports in this area, aiming to contribute to future research in antihistamines and clinical guidance for antihistamines use in individualized medicine.
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Affiliation(s)
- Liqiao Li
- Department of Dermatology, Xiangya Hospital, Central South University, Changsha, China.,Hunan Key Laboratory of Skin Cancer and Psoriasis, Xiangya Hospital, Central South University, Changsha, China.,National Clinical Research Center for Geriatric Disorders, Xiangya Hospital, Central South University, Changsha, Hunan, China
| | - Runqiu Liu
- Department of Dermatology, Xiangya Hospital, Central South University, Changsha, China.,Hunan Key Laboratory of Skin Cancer and Psoriasis, Xiangya Hospital, Central South University, Changsha, China.,National Clinical Research Center for Geriatric Disorders, Xiangya Hospital, Central South University, Changsha, Hunan, China
| | - Cong Peng
- Department of Dermatology, Xiangya Hospital, Central South University, Changsha, China.,Hunan Key Laboratory of Skin Cancer and Psoriasis, Xiangya Hospital, Central South University, Changsha, China.,National Clinical Research Center for Geriatric Disorders, Xiangya Hospital, Central South University, Changsha, Hunan, China
| | - Xiang Chen
- Department of Dermatology, Xiangya Hospital, Central South University, Changsha, China.,Hunan Key Laboratory of Skin Cancer and Psoriasis, Xiangya Hospital, Central South University, Changsha, China.,National Clinical Research Center for Geriatric Disorders, Xiangya Hospital, Central South University, Changsha, Hunan, China
| | - Jie Li
- Department of Dermatology, Xiangya Hospital, Central South University, Changsha, China.,Hunan Key Laboratory of Skin Cancer and Psoriasis, Xiangya Hospital, Central South University, Changsha, China.,National Clinical Research Center for Geriatric Disorders, Xiangya Hospital, Central South University, Changsha, Hunan, China
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24
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Shchulkin AV, Abalenikhina YV, Sudakova EA, Mylnikov PY, Yakusheva EN. Mechanisms of Regulation of the P-Glycoprotein Transporter Protein Functioning under the Action of Nitric Oxide. BIOCHEMISTRY. BIOKHIMIIA 2022; 87:366-379. [PMID: 35527375 DOI: 10.1134/s000629792204006x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/01/2022] [Revised: 03/21/2022] [Accepted: 03/21/2022] [Indexed: 06/14/2023]
Abstract
Mechanisms of regulation of the P-glycoprotein (Pgp) transporter under the action of nitric oxide (NO) were studied in Caco-2 cells. S-Nitrosoglutathione (GSNO) was used as a NO donor, which was added to the cells at concentrations 1, 10, 50, 100, and 500 µM and incubated for 3, 24, or 72 h. The amount of Pgp was analyzed using Western blotting, activity was determined by monitoring transport of its substrate, fexofenadine. The study showed that a short-term exposure to GSNO for 3 h at 500 µM concentration caused increase in the concentration of peroxynitrite in Caco-2 cells, which reduced the activity, but not the amount of Pgp. Increase in the duration of exposure to 24 h increased the amount and activity of Pgp at GSNO concentrations of 10 and 50 µM, increased the amount without increasing activity at 100 µM concentration, and decreased the amount of the transporter protein at 500 µM. Duration of exposure to GSNO of 72 h at concentration of 10 µM resulted in the increase of the amount and activity of Pgp, while at concentration of 100 and 500 µM it decreased the amount of the transport protein. At the same time, it was shown using specific inhibitors that the increase in the amount of Pgp under the influence of low concentrations of GSNO was realized through the NO-cGMP signaling pathway, and the effect of the higher concentration of GSNO and the respective development of nitrosative stress was realized through Nrf2 and the constitutive androstane receptor.
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25
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Sun W, Gao J, Fan R, Zhang T, Tian Y, Wang Z, Zhang H, Zheng A. The Effect of Particle Size on the Absorption of Cyclosporin A Nanosuspensions. Int J Nanomedicine 2022; 17:1741-1755. [PMID: 35469173 PMCID: PMC9034871 DOI: 10.2147/ijn.s357541] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2022] [Accepted: 04/04/2022] [Indexed: 12/22/2022] Open
Abstract
Background Cyclosporin A (CsA) is a hydrophobic drug widely used as an immunosuppressant and anti-rejection drug in solid organ transplantation. On the market, there are two oral CsA formulations available containing polyoxyethylene castor oil, which can cause serious allergic reactions and nephrotoxicity. In order to eliminate polyoxyethylene castor oil, CsA was formulated into a nanosuspension. This study aimed to design an oral cyclosporin A nanosuspensions (CsA-NSs) and investigate the effect of particle size on absorption of CsA-NSs. Methods CsA-NSs were prepared using a wet bead milling method. Particle size, morphology and crystallinity state of CsA-NSs were characterized. The in vitro dissolution, the intestinal absorption properties and pharmacokinetic study of CsA-NSs were investigated. Results CsA-NSs with sizes of 280 nm, 522 nm and 2967 nm were prepared. The shape of CsA-NSs with smaller size was similar to that of spheres. The crystallinity of CsA in nanocrystals was reduced. The dissolution rate of CsA-NSs (280 nm) was greater than that of CsA-NSs (522 nm) and CsA-NSs (2967 nm). CsA-NSs (280 nm) showed higher absorption rate constants (Kα) and effective permeability coefficients (Peff) of different intestinal segments compared with that of CsA-NSs (522 nm) and CsA-NSs (2967 nm). AUC0-48h of 280 nm CsA-NSs was about 1.12-fold of that of 522 nm CsA-NSs, and about 1.51-fold of that of 2967 nm CsA-NSs. In particular, the particle size of CsA-NSs was nanoscale, and their bioavailability was bioequivalent with marked self-microemulsion (Sandimmun Neoral®). Conclusion It is feasible to prepare CsA-NSs. The dissolution rate, gastrointestinal transport properties and the oral absorption of CsA-NSs were promoted by reducing size. Considering the cost, efficiency and energy consumption, there should be an optimal particle size range in industrial production.
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Affiliation(s)
- Wenjun Sun
- Department of Pharmaceutics, Institute of Pharmacology and Toxicology, Academy of Military Medical Sciences, Beijing, People’s Republic of China
| | - Jing Gao
- Department of Pharmaceutics, Institute of Pharmacology and Toxicology, Academy of Military Medical Sciences, Beijing, People’s Republic of China
| | - Ranran Fan
- Bengbu Medical College, Bengbu, People’s Republic of China
| | - Ting Zhang
- School of Basic Medical Sciences, Zhengzhou University, Zhengzhou, People’s Republic of China
| | - Yang Tian
- Department of Pharmaceutics, Institute of Pharmacology and Toxicology, Academy of Military Medical Sciences, Beijing, People’s Republic of China
| | - Zengming Wang
- Department of Pharmaceutics, Institute of Pharmacology and Toxicology, Academy of Military Medical Sciences, Beijing, People’s Republic of China
| | - Hui Zhang
- Department of Pharmaceutics, Institute of Pharmacology and Toxicology, Academy of Military Medical Sciences, Beijing, People’s Republic of China
- Correspondence: Hui Zhang; Aiping Zheng, Department of Pharmaceutics, Institute of Pharmacology and Toxicology, Academy of Military Medical Sciences, Beijing, People’s Republic of China, Tel +86 10 66931694, Email ;
| | - Aiping Zheng
- Department of Pharmaceutics, Institute of Pharmacology and Toxicology, Academy of Military Medical Sciences, Beijing, People’s Republic of China
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Kojima M, Degawa M. Sex, Organ, and Breed Differences in the mRNA Expression of Drug Transporters in the Liver and Kidney of Pigs. Biol Pharm Bull 2022; 45:508-516. [DOI: 10.1248/bpb.b21-01033] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Affiliation(s)
- Misaki Kojima
- Meat Animal Biosystem Group, Division of Meat Animal and Poultry Research, Institute of Livestock and Grassland Science, National Agriculture and Food Research Organization (NARO)
| | - Masakuni Degawa
- Laboratory of Molecular Toxicology, School of Pharmaceutical Sciences, University of Shizuoka
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27
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Cavalca AMB, Brandi A, Fonseca-Alves RH, Laufer-Amorim R, Fonseca-Alves CE. P-Glycoprotein and Androgen Receptor Expression Reveals Independence of Canine Prostate Cancer from Androgen Hormone Stimulation. Int J Mol Sci 2022; 23:1163. [PMID: 35163087 PMCID: PMC8835304 DOI: 10.3390/ijms23031163] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2021] [Revised: 01/04/2022] [Accepted: 01/18/2022] [Indexed: 12/04/2022] Open
Abstract
Canine prostate cancer (PC) is an aggressive disease, and dogs can be considered comparative models for human PC. In recent years, canine PC has been shown to resemble human castrate-resistant prostate cancer. The influx and efflux of testosterone in prostatic luminal cells are regulated by P-glycoprotein (P-gp). Therefore, human PC generally lacks P-gp expression and maintains the expression of androgen receptors (ARs). However, this co-expression has not previously been investigated in dogs. Therefore, this study aimed to evaluate AR and P-gp co-expression to elucidate these protein patterns in canine prostate samples. We identified AR/P-gp double immunofluorescence co-expression of both proteins in normal luminal cells. However, in canine PC, cells lack AR expression and exhibit increased P-gp expression. These results were confirmed by gene expression analyses. Overall, our results strongly suggest that normal canine prostate testosterone influx may be regulated by P-gp expression, and that during progression to PC, prostatic cells lack AR expression and P-gp overexpress. P-gp expression in canine PC may be related to a phenotype of multiple drug resistance.
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Affiliation(s)
- Alexandre Matheus Baesso Cavalca
- Department of Veterinary Surgery and Anesthesiology, School of Veterinary Medicine and Animal Science, São Paulo State University—UNESP, Botucatu 18618-687, Brazil; (A.M.B.C.); (A.B.)
| | - Andressa Brandi
- Department of Veterinary Surgery and Anesthesiology, School of Veterinary Medicine and Animal Science, São Paulo State University—UNESP, Botucatu 18618-687, Brazil; (A.M.B.C.); (A.B.)
| | - Ricardo Henrique Fonseca-Alves
- Department of Electrical Engineering, School of Electrical, Mechanical and Computer Engineering, Federal University of Goias—UFG, Goiania 74690-900, Brazil;
| | - Renée Laufer-Amorim
- Department of Veterinary Clinic, School of Veterinary Medicine and Animal Science, São Paulo State University—UNESP, Botucatu 18618-687, Brazil;
| | - Carlos Eduardo Fonseca-Alves
- Department of Veterinary Surgery and Anesthesiology, School of Veterinary Medicine and Animal Science, São Paulo State University—UNESP, Botucatu 18618-687, Brazil; (A.M.B.C.); (A.B.)
- Institute of Health Sciences, Paulista University—UNIP, Bauru 17048-290, Brazil
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Sevcikova A, Izoldova N, Stevurkova V, Kasperova B, Chovanec M, Ciernikova S, Mego M. The Impact of the Microbiome on Resistance to Cancer Treatment with Chemotherapeutic Agents and Immunotherapy. Int J Mol Sci 2022; 23:ijms23010488. [PMID: 35008915 PMCID: PMC8745082 DOI: 10.3390/ijms23010488] [Citation(s) in RCA: 34] [Impact Index Per Article: 17.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2021] [Revised: 12/07/2021] [Accepted: 12/07/2021] [Indexed: 02/04/2023] Open
Abstract
Understanding the mechanisms of resistance to therapy in human cancer cells has become a multifaceted limiting factor to achieving optimal cures in cancer patients. Besides genetic and epigenetic alterations, enhanced DNA damage repair activity, deregulation of cell death, overexpression of transmembrane transporters, and complex interactions within the tumor microenvironment, other mechanisms of cancer treatment resistance have been recently proposed. In this review, we will summarize the preclinical and clinical studies highlighting the critical role of the microbiome in the efficacy of cancer treatment, concerning mainly chemotherapy and immunotherapy with immune checkpoint inhibitors. In addition to involvement in drug metabolism and immune surveillance, the production of microbiota-derived metabolites might represent the link between gut/intratumoral bacteria and response to anticancer therapies. Importantly, an emerging trend of using microbiota modulation by probiotics and fecal microbiota transplantation (FMT) to overcome cancer treatment resistance will be also discussed.
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Affiliation(s)
- Aneta Sevcikova
- Department of Genetics, Cancer Research Institute, Biomedical Research Center of the Slovak Academy of Sciences, Dúbravská Cesta 9, 845 05 Bratislava, Slovakia; (A.S.); (N.I.); (V.S.)
| | - Nikola Izoldova
- Department of Genetics, Cancer Research Institute, Biomedical Research Center of the Slovak Academy of Sciences, Dúbravská Cesta 9, 845 05 Bratislava, Slovakia; (A.S.); (N.I.); (V.S.)
- Department of Genetics, Faculty of Natural Sciences, Comenius University, 842 15 Bratislava, Slovakia
| | - Viola Stevurkova
- Department of Genetics, Cancer Research Institute, Biomedical Research Center of the Slovak Academy of Sciences, Dúbravská Cesta 9, 845 05 Bratislava, Slovakia; (A.S.); (N.I.); (V.S.)
| | - Barbora Kasperova
- Department of Oncohematology, Faculty of Medicine, Comenius University, Bratislava and National Cancer Institute, 833 10 Bratislava, Slovakia;
| | - Michal Chovanec
- 2nd Department of Oncology, Faculty of Medicine, Comenius University, Bratislava and National Cancer Institute, 833 10 Bratislava, Slovakia; (M.C.); (M.M.)
| | - Sona Ciernikova
- Department of Genetics, Cancer Research Institute, Biomedical Research Center of the Slovak Academy of Sciences, Dúbravská Cesta 9, 845 05 Bratislava, Slovakia; (A.S.); (N.I.); (V.S.)
- Correspondence: ; Tel.: +421-2-3229-5198
| | - Michal Mego
- 2nd Department of Oncology, Faculty of Medicine, Comenius University, Bratislava and National Cancer Institute, 833 10 Bratislava, Slovakia; (M.C.); (M.M.)
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Wang C, Chen L, Sun Y, Guo W, Taouil AK, Ojima I. Design, synthesis and SAR study of Fluorine-containing 3rd-generation taxoids. Bioorg Chem 2021; 119:105578. [PMID: 34979464 DOI: 10.1016/j.bioorg.2021.105578] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2021] [Revised: 12/12/2021] [Accepted: 12/17/2021] [Indexed: 12/29/2022]
Abstract
It has been shown that the incorporation of fluorine or organofluorine groups into pharmaceutical and agricultural drugs often induces desirable pharmacological properties through unique protein-drug interactions involving fluorine. We have reported separately remarkable effects of the 2,2-difluorovinyl (DFV) group at the C3' position, as well as those of the CF3O and CHF2O groups at the 3-position of the C2-benzoyl moiety of the 2nd- and 3rd-generation taxoids on their potency and pharmacological properties. Thus, it was very natural for us to investigate the combination of these two modifications in the 3rd-generation taxoids and to find out whether these two modifications are cooperative at the binding site in the β-tubulin or not, as well as to see how these effects are reflected in the biological activities of the new 3rd-generation DFV-taxoids. Accordingly, we designed, synthesized and fully characterized 14 new 3rd-generation DFV-taxoids. These new DFV-taxoids exhibited remarkable cytotoxicity against human breast, lung, colon, pancreatic and prostate cancer cell lines. All of these new DFV-taxoids exhibited subnanomolar IC50 values against drug-sensitive cell lines, A549, HT29, Vcap and PC3, as well as CFPAC-1. All of the novel DFV-taxoids exhibited 2-4 orders of magnitude greater potency against extremely drug-resistant cancer cell lines, LCC6-MDR and DLD-1, as compared to paclitaxel, indicating that these new DFV-taxoids can overcome MDR caused by the overexpression of Pgp and other ABC cassette transporters. Dose-response (kill) curve analysis of the new DFV-taxoids in LCC6-MDR and DLD-1 cell lines revealed highly impressive profiles of several new DFV-taxoids. The cooperative effects of the combination of the 3'-DFV group and 3-CF3O/CHF2O-benzoyl moiety at the C2 position were investigated in detail by molecular docking analysis. We found that both the 3'-DFV moiety and the 3-CF3O/3-CHF2O group of the C2-benzoate moiety are nicely accommodated to the deep hydrophobic pocket of the paclitaxel/taxoid binding site in the β-tubulin, enabling an enhanced binding mode through unique attractive interactions between fluorine/CF3O/CHF2O and the protein beyond those of paclitaxel and new-generation taxoids without bearing organofluorine groups, which are reflected in the remarkable potency of the new 3rd-generation DFV-taxoids.
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Affiliation(s)
- Changwei Wang
- Department of Chemistry, Stony Brook University, Stony Brook, NY 11794-3400, USA; Institute of Chemical Biology and Drug Discovery, Stony Brook University, Stony Brook, NY 11794-3400, USA; Drug Discovery Pipeline, Guangzhou Institute of Biomedicine and Health, Chinese Academy of Science, Guangzhou 510530, China
| | - Lei Chen
- Department of Chemistry, Stony Brook University, Stony Brook, NY 11794-3400, USA; Institute of Chemical Biology and Drug Discovery, Stony Brook University, Stony Brook, NY 11794-3400, USA
| | - Yi Sun
- Department of Chemistry, Stony Brook University, Stony Brook, NY 11794-3400, USA; Institute of Chemical Biology and Drug Discovery, Stony Brook University, Stony Brook, NY 11794-3400, USA
| | - Wanrong Guo
- Drug Discovery Pipeline, Guangzhou Institute of Biomedicine and Health, Chinese Academy of Science, Guangzhou 510530, China
| | - Adam K Taouil
- Department of Chemistry, Stony Brook University, Stony Brook, NY 11794-3400, USA
| | - Iwao Ojima
- Department of Chemistry, Stony Brook University, Stony Brook, NY 11794-3400, USA; Institute of Chemical Biology and Drug Discovery, Stony Brook University, Stony Brook, NY 11794-3400, USA.
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Targeting Drug Chemo-Resistance in Cancer Using Natural Products. Biomedicines 2021; 9:biomedicines9101353. [PMID: 34680470 PMCID: PMC8533186 DOI: 10.3390/biomedicines9101353] [Citation(s) in RCA: 46] [Impact Index Per Article: 15.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2021] [Revised: 09/22/2021] [Accepted: 09/23/2021] [Indexed: 02/07/2023] Open
Abstract
Cancer is one of the leading causes of death globally. The development of drug resistance is the main contributor to cancer-related mortality. Cancer cells exploit multiple mechanisms to reduce the therapeutic effects of anticancer drugs, thereby causing chemotherapy failure. Natural products are accessible, inexpensive, and less toxic sources of chemotherapeutic agents. Additionally, they have multiple mechanisms of action to inhibit various targets involved in the development of drug resistance. In this review, we have summarized the basic research and clinical applications of natural products as possible inhibitors for drug resistance in cancer. The molecular targets and the mechanisms of action of each natural product are also explained. Diverse drug resistance biomarkers were sensitive to natural products. P-glycoprotein and breast cancer resistance protein can be targeted by a large number of natural products. On the other hand, protein kinase C and topoisomerases were less sensitive to most of the studied natural products. The studies discussed in this review will provide a solid ground for scientists to explore the possible use of natural products in combination anticancer therapies to overcome drug resistance by targeting multiple drug resistance mechanisms.
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Narayanan S, Fan YF, Gujarati NA, Teng QX, Wang JQ, Cai CY, Yang Y, Chintalapati AJ, Lei Y, Korlipara VL, Chen ZS. VKNG-1 Antagonizes ABCG2-Mediated Multidrug Resistance via p-AKT and Bcl-2 Pathway in Colon Cancer: In Vitro and In Vivo Study. Cancers (Basel) 2021; 13:4675. [PMID: 34572902 PMCID: PMC8470077 DOI: 10.3390/cancers13184675] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2021] [Revised: 08/23/2021] [Accepted: 09/07/2021] [Indexed: 11/16/2022] Open
Abstract
The emergence of multidrug resistance (MDR) to chemotherapeutic drugs is a major problem in the therapy of cancer. Knowledge of the mechanisms of drug resistance in cancer is necessary for developing efficacious therapies. ATP-binding cassette (ABC) transporters are transmembrane proteins that efflux chemotherapeutic drugs from cancer cells, thereby producing MDR. Our research efforts have led to the discovery of VKNG-1, a compound that selectively inhibits the ABCG2 transporter and reverses resistanctabe to standard anticancer drugs both in vitro and in vivo. VKNG-1, at 6 µM, selectively inhibited ABCG2 transporter and sensitized ABCG2-overexpressing drug-resistant cancer cells to the ABCG2 substrate anticancer drugs mitoxantrone, SN-38, and doxorubicin in ABCG2-overexpressing colon cancers. VKNG- 1 reverses ABCG2-mediated MDR by blocking ABCG2 efflux activity and downregulating ABCG2 expression at the mRNA and protein levels. Moreover, VKNG-1 inhibits the level of phosphorylated protein kinase B (PKB/p-AKT), and B-cell lymphoma-2 (Bcl-2) protein which may overcome resistance to anticancer drugs. However, the in vitro translocation of ABCG2 protein did not occur in the presence of 6 µM of VKNG-1. In addition, VKNG-1 enhanced the anticancer efficacy of irinotecan in ABCG2- overexpressing mouse tumor xenografts. Overall, our results suggest that VKNG-1 may, in combination with certain anticancer drugs, represent a treatment to overcome ABCG2-mediated MDR colon cancers.
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Affiliation(s)
- Silpa Narayanan
- Department of Pharmaceutical Sciences, College of Pharmacy and Health Sciences, St. John’s University, Queens, NY 11439, USA; (S.N.); (Y.-F.F.); (N.A.G.); (Q.-X.T.); (J.-Q.W.); (C.-Y.C.); (Y.Y.); (A.J.C.)
| | - Ying-Fang Fan
- Department of Pharmaceutical Sciences, College of Pharmacy and Health Sciences, St. John’s University, Queens, NY 11439, USA; (S.N.); (Y.-F.F.); (N.A.G.); (Q.-X.T.); (J.-Q.W.); (C.-Y.C.); (Y.Y.); (A.J.C.)
- Department of Hepatobiliary Surgery, Zhu Jiang Hospital of Southern Medical University, Guangzhou 510282, China
| | - Nehaben A. Gujarati
- Department of Pharmaceutical Sciences, College of Pharmacy and Health Sciences, St. John’s University, Queens, NY 11439, USA; (S.N.); (Y.-F.F.); (N.A.G.); (Q.-X.T.); (J.-Q.W.); (C.-Y.C.); (Y.Y.); (A.J.C.)
| | - Qiu-Xu Teng
- Department of Pharmaceutical Sciences, College of Pharmacy and Health Sciences, St. John’s University, Queens, NY 11439, USA; (S.N.); (Y.-F.F.); (N.A.G.); (Q.-X.T.); (J.-Q.W.); (C.-Y.C.); (Y.Y.); (A.J.C.)
| | - Jing-Quan Wang
- Department of Pharmaceutical Sciences, College of Pharmacy and Health Sciences, St. John’s University, Queens, NY 11439, USA; (S.N.); (Y.-F.F.); (N.A.G.); (Q.-X.T.); (J.-Q.W.); (C.-Y.C.); (Y.Y.); (A.J.C.)
| | - Chao-Yun Cai
- Department of Pharmaceutical Sciences, College of Pharmacy and Health Sciences, St. John’s University, Queens, NY 11439, USA; (S.N.); (Y.-F.F.); (N.A.G.); (Q.-X.T.); (J.-Q.W.); (C.-Y.C.); (Y.Y.); (A.J.C.)
| | - Yuqi Yang
- Department of Pharmaceutical Sciences, College of Pharmacy and Health Sciences, St. John’s University, Queens, NY 11439, USA; (S.N.); (Y.-F.F.); (N.A.G.); (Q.-X.T.); (J.-Q.W.); (C.-Y.C.); (Y.Y.); (A.J.C.)
| | - Anirudh J. Chintalapati
- Department of Pharmaceutical Sciences, College of Pharmacy and Health Sciences, St. John’s University, Queens, NY 11439, USA; (S.N.); (Y.-F.F.); (N.A.G.); (Q.-X.T.); (J.-Q.W.); (C.-Y.C.); (Y.Y.); (A.J.C.)
| | - Yixiong Lei
- School of Public Health, Guangzhou Medical University, Guangzhou 511436, China;
| | - Vijaya L. Korlipara
- Department of Pharmaceutical Sciences, College of Pharmacy and Health Sciences, St. John’s University, Queens, NY 11439, USA; (S.N.); (Y.-F.F.); (N.A.G.); (Q.-X.T.); (J.-Q.W.); (C.-Y.C.); (Y.Y.); (A.J.C.)
| | - Zhe-Sheng Chen
- Department of Pharmaceutical Sciences, College of Pharmacy and Health Sciences, St. John’s University, Queens, NY 11439, USA; (S.N.); (Y.-F.F.); (N.A.G.); (Q.-X.T.); (J.-Q.W.); (C.-Y.C.); (Y.Y.); (A.J.C.)
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Wang Y, Qiao X, Yang X, Yuan M, Xian S, Zhang L, Yang D, Liu S, Dai F, Tan Z, Cheng Y. The role of a drug-loaded poly (lactic co-glycolic acid) (PLGA) copolymer stent in the treatment of ovarian cancer. Cancer Biol Med 2021; 17:237-250. [PMID: 32296591 PMCID: PMC7142835 DOI: 10.20892/j.issn.2095-3941.2019.0169] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2019] [Accepted: 09/11/2019] [Indexed: 12/12/2022] Open
Abstract
Objectives: Cisplatin (CDDP) is a widely used and effective basic chemotherapeutic drug for the treatment of a variety of tumors, including ovarian cancer. However, adverse side effects and acquired drug resistance are observed in the clinical application of CDDP. Identifying a mode of administration that can alleviate side effects and reduce drug resistance has become a promising strategy to solve this problem. Methods: In this study, 3D printing technology was used to prepare a CDDP-poly (lactic-co-glycolic acid) (CDDP-PLGA) polymer compound stent, and its physicochemical properties and cytotoxicity were evaluated both in vitro and in vivo. Results: The CDDP-PLGA stent had a significant effect on cell proliferation and apoptosis and clearly decreased the size of subcutaneous tumors in nude mice, whereas the systemic side effects were mild compared with those of intraperitoneal CDDP injection. Compared with the control group, CDDP-PLGA significantly increased the mRNA and protein levels of p-glycoprotein (P < 0.01; P < 0.01) and decreased vascular endothelial growth factor mRNA (P < 0.05) and protein levels (P < 0.01), however, CDDP-PLGA significantly decreased the mRNA and protein levels of p-glycoprotein (P < 0.01; P < 0.01) and vascular endothelial growth factor (P < 0.01; P < 0.01), which are associated with chemoresistance, in subcutaneous tumor tissue. Immunohistochemistry assay results revealed that, in the CDDP-PLGA group, the staining of the proliferation-related genes Ki67 and PCNA were lightly, and the apoptosis-related gene caspase-3 stained deeply. Conclusions: PLGA biomaterials loaded with CDDP, as compared with the same amount of free CDDP, showed good efficacy in terms of cytotoxicity, as evidenced by changes in apoptosis. Continuous local CDDP release can decrease the systemic side effects of this drug and the occurrence of drug resistance and angiogenesis, and improve the therapeutic effect. This new approach may be an effective strategy for the local treatment of epithelial ovarian cancer.
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Affiliation(s)
- Yanqing Wang
- Department of Obstetrics and Gynecology, Renmin Hospital of Wuhan University, Wuhan 430060, China
| | - Xiaoyin Qiao
- College of Biology, Hunan University, Changsha 410082, China
| | - Xiao Yang
- Department of Obstetrics and Gynecology, Renmin Hospital of Peking University, Beijing 100044, China
| | - Mengqin Yuan
- Department of Obstetrics and Gynecology, Renmin Hospital of Wuhan University, Wuhan 430060, China
| | - Shu Xian
- Department of Obstetrics and Gynecology, Renmin Hospital of Wuhan University, Wuhan 430060, China
| | - Li Zhang
- Department of Obstetrics and Gynecology, Renmin Hospital of Wuhan University, Wuhan 430060, China
| | - Dongyong Yang
- Department of Obstetrics and Gynecology, Renmin Hospital of Wuhan University, Wuhan 430060, China
| | - Shiyi Liu
- Department of Obstetrics and Gynecology, Renmin Hospital of Wuhan University, Wuhan 430060, China
| | - Fangfang Dai
- Department of Obstetrics and Gynecology, Taihe Hospital, Hubei University of Medicine, Shiyan 442000, China
| | - Zhikai Tan
- College of Biology, Hunan University, Changsha 410082, China
| | - Yanxiang Cheng
- Department of Obstetrics and Gynecology, Renmin Hospital of Wuhan University, Wuhan 430060, China
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Dubey SK, Kali M, Hejmady S, Saha RN, Alexander A, Kesharwani P. Recent advances of dendrimers as multifunctional nano-carriers to combat breast cancer. Eur J Pharm Sci 2021; 164:105890. [DOI: 10.1016/j.ejps.2021.105890] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2021] [Revised: 05/25/2021] [Accepted: 05/25/2021] [Indexed: 12/12/2022]
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34
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Valenti S, Del Valle L, Yousefzade O, Macovez R, Franco L, Puiggalí J. Chloramphenicol loaded polylactide melt electrospun scaffolds for biomedical applications. Int J Pharm 2021; 606:120897. [PMID: 34293473 DOI: 10.1016/j.ijpharm.2021.120897] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2021] [Revised: 07/14/2021] [Accepted: 07/15/2021] [Indexed: 12/11/2022]
Abstract
Melt electrospinning of polylactide (PLA) loaded with chloramphenicol (CAM) has been performed and characteristics of fibers, physical properties of scaffolds, CAM release behavior, antibacterial properties and biocompatibility have been evaluated. The interest of CAM loaded samples is nowadays enhanced for biomedical applications since this antibiotic has been demonstrated to be efficient for the treatment of cancer. Melt electrospinning has been selected as an ideal preparation process because it avoids the use of toxic solvents which are harmful to the environment and could be problematic for biomedical applications. The electrospinning process rendered fibers with a relatively large diameter (between 20 μm and 40 μm depending on the load) and minimum polymer degradation. Characteristics of melt electrospun scaffolds were also compared with those prepared by solution electrospinning. Differences consisted in a more sustained release and a higher biocompatibility for the melt processed samples. Bactericide effect was evaluated as an evidence of the maintenance of the CAM bioactivity after melt processing at high temperature and the slower release caused by the relatively high diameter of the constitutive fibers. Since pure CAM showed thermal degradation at temperatures relatively close to the PLA melting temperature, a complete analysis of the degradation process of pure CAM as well as of PLA samples loaded with CAM was performed. The Invariant Kinetic Parameters method allowed determining an initial decomposition step that followed an autoaccelatory Avrami model, and then an autocatalytic decomposition reaction took place for conversions higher than 50%. Dispersion in the PLA matrix enhances the thermal stability of the antibiotic, with an onset temperature of degradation that was higher by 16 °C in the melt-electrospun fibers than in the liquid state of pure CAM.
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Affiliation(s)
- Sofia Valenti
- Grup de Caracterització de Materials, Departament de Física, Universitat Politècnica de Catalunya, EEBE, Av. Eduard Maristany 10-14, E-08019 Barcelona, Catalonia, Spain; Barcelona Research Center in Multiscale Science and Engineering, Universitat Politècnica de Catalunya, Campus Diagonal-Besòs, Av. Eduard Maristany 10-14, E-08019 Barcelona, Catalonia, Spain; Departament d'Enginyeria Química, Universitat Politècnica de Catalunya, Escola Enginyeria de Barcelona Est-EEBE, c/Eduard Maristany 10-14, Barcelona 08019, Spain
| | - Luis Del Valle
- Barcelona Research Center in Multiscale Science and Engineering, Universitat Politècnica de Catalunya, Campus Diagonal-Besòs, Av. Eduard Maristany 10-14, E-08019 Barcelona, Catalonia, Spain; Departament d'Enginyeria Química, Universitat Politècnica de Catalunya, Escola Enginyeria de Barcelona Est-EEBE, c/Eduard Maristany 10-14, Barcelona 08019, Spain
| | - Omid Yousefzade
- Departament d'Enginyeria Química, Universitat Politècnica de Catalunya, Escola Enginyeria de Barcelona Est-EEBE, c/Eduard Maristany 10-14, Barcelona 08019, Spain
| | - Roberto Macovez
- Grup de Caracterització de Materials, Departament de Física, Universitat Politècnica de Catalunya, EEBE, Av. Eduard Maristany 10-14, E-08019 Barcelona, Catalonia, Spain
| | - Lourdes Franco
- Barcelona Research Center in Multiscale Science and Engineering, Universitat Politècnica de Catalunya, Campus Diagonal-Besòs, Av. Eduard Maristany 10-14, E-08019 Barcelona, Catalonia, Spain; Departament d'Enginyeria Química, Universitat Politècnica de Catalunya, Escola Enginyeria de Barcelona Est-EEBE, c/Eduard Maristany 10-14, Barcelona 08019, Spain.
| | - Jordi Puiggalí
- Barcelona Research Center in Multiscale Science and Engineering, Universitat Politècnica de Catalunya, Campus Diagonal-Besòs, Av. Eduard Maristany 10-14, E-08019 Barcelona, Catalonia, Spain; Departament d'Enginyeria Química, Universitat Politècnica de Catalunya, Escola Enginyeria de Barcelona Est-EEBE, c/Eduard Maristany 10-14, Barcelona 08019, Spain.
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35
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Özerkan D, Erol A, Altuner EM, Canlı K, Kuruca DS. Some Bryophytes Trigger Cytotoxicity of Stem Cell-like Population in 5-Fluorouracil Resistant Colon Cancer Cells. Nutr Cancer 2021; 74:1012-1022. [PMID: 34151658 DOI: 10.1080/01635581.2021.1933098] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Abstract
Colorectal cancer is the third most common cancer worldwide. Cancer stem cells are known to play an important role in relapse, and metastases of the disease after chemotherapy. Investigation of new drugs, and their combinations targeting these cells and thus eliminating cancer is one of the most urgent needs of today's chemotherapy. The aim of the present study was to evaluate the effects of Bryophytes like Abietinella abietina (AA), Homolothecium sericeum (HS), Tortella tortuosa (TT), Syntrichia ruralis (SR), and Bryoerythrophyllum rubrum (BR) species extracted with ethyl alcohol on 5-fluorouracil(5-FU) resistant colorectal cancer cell lines (HCT116 and HT29). After extraction, stock solutions of bryophytes were prepared, and IC50 values were detected in drug-resistant cells obtained with 5-FU application. CD24+, CD44+/CD133+ surface markers and P-glycoprotein (P-gp) mediated efflux were isolated from both 5-FU treated cells and analyzed using the flow cytometry. In all bryophyte-treated groups, the binding Rho123low (low Rho fluorescence) and Rhohigh (high Rho fluorescence) were sorted from 5-FU resistant HCT116, and HT-29 cells. All types of bryophytes were found cytotoxic. Bryophyte extract reduced the percentage of Rholow cells in cultures incubated with 5-FU. In summary, the implementation of these bryophytes might be regarded as an effective approach for treatment of colorectal cancer due to their cytotoxic effect that decreases the recurrence of the disease.Supplemental data for this article is available online at https://doi.org/10.1080/01635581.2021.1933098.
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Affiliation(s)
- Dilşad Özerkan
- Faculty of Health Sciences, Molecular Cancer Research Center, İstinye University, İstanbul, Turkey
| | - Ayşe Erol
- Department of Medical Biology, Faculty of Medicine, İstanbul University, İstanbul, Turkey
| | - Ergin Murat Altuner
- Department of Biology, Faculty of Science and Literature, Kastamonu University, Kastamonu, Turkey
| | - Kerem Canlı
- Department of Biology, Faculty of Sciences, Dokuz Eylül University, İzmir, Turkey
| | - Dürdane Serap Kuruca
- Department of Physiology, Faculty of Medicine, Istanbul University, İstanbul, Turkey
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36
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Mahmud S, Islam MJ, Parves MR, Khan MA, Tabussum L, Ahmed S, Ali MA, Fakayode SO, Halim MA. Designing potent inhibitors against the multidrug resistance P-glycoprotein. J Biomol Struct Dyn 2021; 40:9403-9415. [PMID: 34060432 DOI: 10.1080/07391102.2021.1930159] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
The multidrug transporter P-glycoprotein is an ATP binding cassette (ABC) exporter responsible for resistance to tumor cells during chemotherapy. This study was designed with computational approaches aimed at identifying the best potent inhibitors of P-glycoprotein. Although many compounds have been suggested to inhibit P-glycoprotein, however, their information on bioavailability, selectivity, ADMET properties, and molecular interactions has not been revealed. Molecular docking, ADMET analysis, molecular dynamics, Principal component analysis (PCA), and binding free energy calculations were performed. Two compounds D1 and D2 showed the best docking score against P-glycoprotein and both compounds have 4-thiazolidinone derivatives containing indolin-3 one moiety are novel anti-tumor compounds. ADMET calculation analysis predicted D1 and D2 to have acceptable pharmacokinetic properties. The MD simulation discloses that D1-P-glycoprotein and D2-P-glycoprotein complexes are in stable conformation as apo-form. Hydrophobic amino acid such as phenylalanine plays significant on the interactions of inhibitors. Principal component analysis shows that both complexes are relatively similar variables as apo-form except planarity and Columbo energy profile. In addition, Quantitative Structural Activity Relationship (QSAR) of the ligand candidates were subjected to the principal component analysis (PCA) for pattern recognition. Partial-least-square (PLS) regression analysis was further utilized to model drug candidates' QSAR for subsequent prediction of the binding energy of validated drug candidates. PCA revealed groupings of the drug candidates based on the similarity or differences in drug candidates QSAR. Moreover, the developed PLS regression accurately predicted the values of the binding energy of drug candidates, with low residual error of prediction.Communicated by Ramaswamy H. Sarma.
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Affiliation(s)
- Shafi Mahmud
- Division of Computer Aided Drug-Design, The Red-Green Research Center, BICCB, Tejgaon, Dhaka, Bangladesh.,Department of Genetic Engineering and Biotechnology, University of Rajshahi, Rajshahi, Bangladesh
| | - Md Jahirul Islam
- Division of Computer Aided Drug-Design, The Red-Green Research Center, BICCB, Tejgaon, Dhaka, Bangladesh
| | - Md Rimon Parves
- Division of Computer Aided Drug-Design, The Red-Green Research Center, BICCB, Tejgaon, Dhaka, Bangladesh.,Department of Biochemistry and Biotechnology, University of Science and Technology Chittagong (USTC), Chittagong, Bangladesh
| | - Md Arif Khan
- Division of Computer Aided Drug-Design, The Red-Green Research Center, BICCB, Tejgaon, Dhaka, Bangladesh.,Department of Biotechnology and Genetic Engineering, University of Development Alternative (UODA), Dhaka, Bangladesh
| | - Lamiya Tabussum
- Division of Computer Aided Drug-Design, The Red-Green Research Center, BICCB, Tejgaon, Dhaka, Bangladesh.,Department of Genetic Engineering and Biotechnology, University of Rajshahi, Rajshahi, Bangladesh
| | - Sinthyia Ahmed
- Division of Computer Aided Drug-Design, The Red-Green Research Center, BICCB, Tejgaon, Dhaka, Bangladesh
| | - Md Ackas Ali
- Division of Computer Aided Drug-Design, The Red-Green Research Center, BICCB, Tejgaon, Dhaka, Bangladesh
| | - Sayo O Fakayode
- Department of Physical Sciences, University of Arkansas-Fort Smith, Fort Smith, Arkansas, USA
| | - Mohammad A Halim
- Department of Physical Sciences, University of Arkansas-Fort Smith, Fort Smith, Arkansas, USA
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37
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Mai Y, Dou L, Yao Z, Madla CM, Gavins FKH, Taherali F, Yin H, Orlu M, Murdan S, Basit AW. Quantification of P-Glycoprotein in the Gastrointestinal Tract of Humans and Rodents: Methodology, Gut Region, Sex, and Species Matter. Mol Pharm 2021; 18:1895-1904. [PMID: 33886332 PMCID: PMC8289313 DOI: 10.1021/acs.molpharmaceut.0c00574] [Citation(s) in RCA: 26] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
![]()
Intestinal efflux
transporters affect the gastrointestinal processing
of many drugs but further data on their intestinal expression levels
are required. Relative mRNA expression and relative and absolute protein
expression data of transporters are commonly measured by real-time
polymerase chain reaction (RT-PCR), Western blot and mass spectrometry-based
targeted proteomics techniques. All of these methods, however, have
their own strengths and limitations, and therefore, validation for
optimized quantification methods is needed. As such, the identification
of the most appropriate technique is necessary to effectively translate
preclinical findings to first-in-human trials. In this study, the
mRNA expression and protein levels of the efflux transporter P-glycoprotein
(P-gp) in jejunal and ileal epithelia of 30 male and female human
subjects, and the duodenal, jejunal, ileal and colonic tissues in
48 Wistar rats were quantified using RT-PCR, Western blot and liquid
chromatography-tandem mass spectrometry (LC-MS/MS). A similar sex
difference was observed in the expression of small intestinal P-gp
in humans and Wistar rats where P-gp was higher in males than females
with an increasing trend from the proximal to the distal parts in
both species. A strong positive linear correlation was determined
between the Western blot data and LC-MS/MS data in the small intestine
of humans (R2 = 0.85). Conflicting results,
however, were shown in rat small intestinal and colonic P-gp expression
between the techniques (R2 = 0.29 and
0.05, respectively). In RT-PCR and Western blot, an internal reference
protein is experimentally required; here, beta-actin was used which
is innately variable along the intestinal tract. Quantification via
LC-MS/MS can provide data on P-gp expression without the need for
an internal reference protein and consequently, can give higher confidence
on the expression levels of P-gp along the intestinal tract. Overall,
these findings highlight similar trends between the species and suggest
that the Wistar rat is an appropriate preclinical animal model to
predict the oral drug absorption of P-gp substrates in the human small
intestine.
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Affiliation(s)
- Yang Mai
- UCL School of Pharmacy, University College London, 29-39 Brunswick Square, London WC1N 1AX, U.K.,School of Pharmaceutical Sciences (Shenzhen), Sun Yat-sen University, Guangzhou 510275, China
| | - Liu Dou
- UCL School of Pharmacy, University College London, 29-39 Brunswick Square, London WC1N 1AX, U.K.,School of Pharmaceutical Sciences (Shenzhen), Sun Yat-sen University, Guangzhou 510275, China
| | - Zhicheng Yao
- Department of General Surgery, Third Affiliated Hospital of Sun Yat-Sen University, Guangzhou 510630, China
| | - Christine M Madla
- UCL School of Pharmacy, University College London, 29-39 Brunswick Square, London WC1N 1AX, U.K
| | - Francesca K H Gavins
- UCL School of Pharmacy, University College London, 29-39 Brunswick Square, London WC1N 1AX, U.K
| | - Farhan Taherali
- UCL School of Pharmacy, University College London, 29-39 Brunswick Square, London WC1N 1AX, U.K
| | - Heyue Yin
- School of Pharmaceutical Sciences (Shenzhen), Sun Yat-sen University, Guangzhou 510275, China
| | - Mine Orlu
- UCL School of Pharmacy, University College London, 29-39 Brunswick Square, London WC1N 1AX, U.K
| | - Sudaxshina Murdan
- UCL School of Pharmacy, University College London, 29-39 Brunswick Square, London WC1N 1AX, U.K
| | - Abdul W Basit
- UCL School of Pharmacy, University College London, 29-39 Brunswick Square, London WC1N 1AX, U.K
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38
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Asif M, Usman M, Ayub S, Farhat S, Huma Z, Ahmed J, Kamal MA, Hussein D, Javed A, Khan I. Role of ATP-Binding Cassette Transporter Proteins in CNS Tumors: Resistance- Based Perspectives and Clinical Updates. Curr Pharm Des 2021; 26:4747-4763. [PMID: 32091329 DOI: 10.2174/1381612826666200224112141] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2019] [Accepted: 01/22/2020] [Indexed: 12/24/2022]
Abstract
Despite gigantic advances in medical research and development, chemotherapeutic resistance remains a major challenge in complete remission of CNS tumors. The failure of complete eradication of CNS tumors has been correlated with the existence of several factors including overexpression of transporter proteins. To date, 49 ABC-transporter proteins (ABC-TPs) have been reported in humans, and the evidence of their strong association with chemotherapeutics' influx, dissemination, and efflux in CNS tumors, is growing. Research studies on CNS tumors are implicating ABC-TPs as diagnostic, prognostic and therapeutic biomarkers that may be utilised in preclinical and clinical studies. With the current advancements in cell biology, molecular analysis of genomic and transcriptomic interplay, and protein homology-based drug-transporters interaction, our research approaches are streamlining the roles of ABC-TPs in cancer and multidrug resistance. Potential inhibitors of ABC-TP for better clinical outcomes in CNS tumors have emerged. Elacridar has shown to enhance the chemo-sensitivity of Dasatanib and Imatinib in various glioma models. Tariquidar has improved the effectiveness of Temozolomide's in CNS tumors. Although these inhibitors have been effective in preclinical settings, their clinical outcomes have not been as significant in clinical trials. Thus, to have a better understanding of the molecular evaluations of ABC-TPs, as well as drug-interactions, further research is being pursued in research labs. Our lab aims to better comprehend the biological mechanisms involved in drug resistance and to explore novel strategies to increase the clinical effectiveness of anticancer chemotherapeutics, which will ultimately improve clinical outcomes.
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Affiliation(s)
- M Asif
- Cancer Cell Culture & Precision Oncomedicine Lab, Neurooncology Research Group, Institute of Basic Medical Sciences, Khyber Medical University, Peshawar, Pakistan
| | - M Usman
- Cancer Cell Culture & Precision Oncomedicine Lab, Neurooncology Research Group, Institute of Basic Medical Sciences, Khyber Medical University, Peshawar, Pakistan
| | - Shahid Ayub
- Cancer Cell Culture & Precision Oncomedicine Lab, Neurooncology Research Group, Institute of Basic Medical Sciences, Khyber Medical University, Peshawar, Pakistan,Department of Neurosurgery, Hayatabad Medical Complex, KPK Medical Teaching Institute, Peshawar, Pakistan
| | - Sahar Farhat
- Cancer Cell Culture & Precision Oncomedicine Lab, Neurooncology Research Group, Institute of Basic Medical Sciences, Khyber Medical University, Peshawar, Pakistan
| | - Zilli Huma
- Cancer Cell Culture & Precision Oncomedicine Lab, Neurooncology Research Group, Institute of Basic Medical Sciences, Khyber Medical University, Peshawar, Pakistan
| | - Jawad Ahmed
- Cancer Cell Culture & Precision Oncomedicine Lab, Neurooncology Research Group, Institute of Basic Medical Sciences, Khyber Medical University, Peshawar, Pakistan
| | - Mohammad A Kamal
- King Fahd Medical Research Center, King Abdulaziz University, Jeddah, Saudi Arabia,4Enzymoics; Novel Global Community Educational Foundation, 7 Peterlee Place, Hebersham, NSW 2770, Australia
| | - Deema Hussein
- Neurooncology Translational Group, Medical Technology, College of Applied Medical Sciences, King Fahd Medical Research Center, King Abdulaziz University, Jeddah, Saudi Arabia
| | - Aneela Javed
- Atta-ur-Rahman School of Applied Biosciences, National University of Sciences and Technology,
Islamabad 44000, Pakistan,Department of Infectious diseases, Brigham and Women Hospital, Harvard Medical School, Cambridge, Boston, MA 02139, USA
| | - Ishaq Khan
- Cancer Cell Culture & Precision Oncomedicine Lab, Neurooncology Research Group, Institute of Basic Medical Sciences, Khyber Medical University, Peshawar, Pakistan
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39
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Tchounwou PB, Dasari S, Noubissi FK, Ray P, Kumar S. Advances in Our Understanding of the Molecular Mechanisms of Action of Cisplatin in Cancer Therapy. J Exp Pharmacol 2021; 13:303-328. [PMID: 33776489 PMCID: PMC7987268 DOI: 10.2147/jep.s267383] [Citation(s) in RCA: 141] [Impact Index Per Article: 47.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/27/2020] [Accepted: 02/23/2021] [Indexed: 12/15/2022] Open
Abstract
Cisplatin and other platinum-based chemotherapeutic drugs have been used extensively for the treatment of human cancers such as bladder, blood, breast, cervical, esophageal, head and neck, lung, ovarian, testicular cancers, and sarcoma. Cisplatin is commonly administered intravenously as a first-line chemotherapy for patients suffering from various malignancies. Upon absorption into the cancer cell, cisplatin interacts with cellular macromolecules and exerts its cytotoxic effects through a series of biochemical mechanisms by binding to Deoxyribonucleic acid (DNA) and forming intra-strand DNA adducts leading to the inhibition of DNA synthesis and cell growth. Its primary molecular mechanism of action has been associated with the induction of both intrinsic and extrinsic pathways of apoptosis resulting from the production of reactive oxygen species through lipid peroxidation, activation of various signal transduction pathways, induction of p53 signaling and cell cycle arrest, upregulation of pro-apoptotic genes/proteins, and down-regulation of proto-oncogenes and anti-apoptotic genes/proteins. Despite great clinical outcomes, many studies have reported substantial side effects associated with cisplatin monotherapy, while others have shown substantial drug resistance in some cancer patients. Hence, new formulations and several combinational therapies with other drugs have been tested for the purpose of improving the clinical utility of cisplatin. Therefore, this review provides a comprehensive understanding of its molecular mechanisms of action in cancer therapy and discusses the therapeutic approaches to overcome cisplatin resistance and side effects.
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Affiliation(s)
- Paul B Tchounwou
- Cellomics and Toxicogenomics Research Laboratory, NIH-RCMI Center for Health Disparities Research, Jackson State University, Jackson, MS, USA
| | - Shaloam Dasari
- Cellomics and Toxicogenomics Research Laboratory, NIH-RCMI Center for Health Disparities Research, Jackson State University, Jackson, MS, USA
| | - Felicite K Noubissi
- Cellomics and Toxicogenomics Research Laboratory, NIH-RCMI Center for Health Disparities Research, Jackson State University, Jackson, MS, USA
| | - Paresh Ray
- Department of Chemistry and Biochemistry, College of Science, Engineering and Technology, Jackson State University, Jackson, MS, USA
| | - Sanjay Kumar
- Department of Life Sciences, School of Earth, Biological, and Environmental Sciences, Central University of South Bihar, Gaya, India
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40
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Smolinski MP, Urgaonkar S, Pitzonka L, Cutler M, Lee G, Suh KH, Lau JYN. Discovery of Encequidar, First-in-Class Intestine Specific P-glycoprotein Inhibitor. J Med Chem 2021; 64:3677-3693. [PMID: 33729781 DOI: 10.1021/acs.jmedchem.0c01826] [Citation(s) in RCA: 21] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Abstract
Many chemotherapeutics, such as paclitaxel, are administered intravenously as they suffer from poor oral bioavailability, partly because of efflux mechanism of P-glycoprotein in the intestinal epithelium. To date, no drug has been approved by the U.S. Food and Drug Administration (FDA) that selectively blocks this efflux pump. We sought to identify a compound that selectively inhibits P-glycoprotein in the gastrointestinal mucosa with poor oral bioavailability, thus eliminating the issues such as bone marrow toxicity associated with systemic inhibition of P-glycoprotein. Here, we describe the discovery of highly potent, selective, and poorly orally bioavailable P-glycoprotein inhibitor 14 (encequidar). Clinically, encequidar was found to be well tolerated and minimally absorbed; and importantly, it enabled the oral delivery of paclitaxel.
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Affiliation(s)
- Michael P Smolinski
- Athenex Inc., Conventus Building, 1001 Main Street, Suite 600, Buffalo, New York 14203, United States
| | - Sameer Urgaonkar
- Athenex Inc., Conventus Building, 1001 Main Street, Suite 600, Buffalo, New York 14203, United States
| | - Laura Pitzonka
- Athenex Inc., Conventus Building, 1001 Main Street, Suite 600, Buffalo, New York 14203, United States
| | - Murray Cutler
- Athenex Inc., Conventus Building, 1001 Main Street, Suite 600, Buffalo, New York 14203, United States
| | - GwanSun Lee
- Hanmi Pharmaceutical Co. Ltd., 14, Wiryeseong-daero, Songpa-gu, Seoul, 05545, Korea
| | - Kwee Hyun Suh
- Hanmi Pharmaceutical Co. Ltd., 14, Wiryeseong-daero, Songpa-gu, Seoul, 05545, Korea
| | - Johnson Y N Lau
- Athenex Inc., Conventus Building, 1001 Main Street, Suite 600, Buffalo, New York 14203, United States
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Pastvova N, Dolezel P, Mlejnek P. Heat Shock Protein Inhibitor 17-Allyamino-17-Demethoxygeldanamycin, a Potent Inductor of Apoptosis in Human Glioma Tumor Cell Lines, Is a Weak Substrate for ABCB1 and ABCG2 Transporters. Pharmaceuticals (Basel) 2021; 14:ph14020107. [PMID: 33573093 PMCID: PMC7912456 DOI: 10.3390/ph14020107] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2021] [Revised: 01/26/2021] [Accepted: 01/26/2021] [Indexed: 11/16/2022] Open
Abstract
Glioblastoma multiforme (GBM) is the most common primary brain tumor in adults and has a poor prognosis. Complex genetic alterations and the protective effect of the blood–brain barrier (BBB) have so far hampered effective treatment. Here, we investigated the cytotoxic effects of heat shock protein 90 (HSP90) inhibitors, geldanamycin (GDN) and 17-allylamino-17-demethoxygeldanamycin (17-AAG, tanespimycin), in a panel of glioma tumor cell lines with various genetic alterations. We also assessed the ability of the main drug transporters, ABCB1 and ABCG2, to efflux GDN and 17-AAG. We found that GDN and 17-AAG induced extensive cell death with the morphological and biochemical hallmarks of apoptosis in all studied glioma cell lines at sub-micro-molar and nanomolar concentrations. Moderate efflux efficacy of GDN and 17-AAG mediated by ABCB1 was observed. There was an insignificant and low efflux efficacy of GDN and 17-AAG mediated by ABCG2. Conclusion: GDN and 17-AAG, in particular, exhibited strong proapoptotic effects in glioma tumor cell lines irrespective of genetic alterations. GDN and 17-AAG appeared to be weak substrates of ABCB1 and ABCG2. Therefore, the BBB would compromise their cytotoxic effects only partially. We hypothesize that GBM patients may benefit from 17-AAG either as a single agent or in combination with other drugs.
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Paris J, Angeli E, Bousquet G. The Pharmacology of Xenobiotics after Intracerebro Spinal Fluid Administration: Implications for the Treatment of Brain Tumors. Int J Mol Sci 2021; 22:1281. [PMID: 33525427 PMCID: PMC7865853 DOI: 10.3390/ijms22031281] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/31/2020] [Revised: 01/22/2021] [Accepted: 01/26/2021] [Indexed: 01/16/2023] Open
Abstract
The incidence of brain metastasis has been increasing for 10 years, with poor prognosis, unlike the improvement in survival for extracranial tumor localizations. Since recent advances in molecular biology and the development of specific molecular targets, knowledge of the brain distribution of drugs has become a pharmaceutical challenge. Most anticancer drugs fail to cross the blood-brain barrier. In order to get around this problem and penetrate the brain parenchyma, the use of intrathecal administration has been developed, but the mechanisms governing drug distribution from the cerebrospinal fluid to the brain parenchyma are poorly understood. Thus, in this review we discuss the pharmacokinetics of drugs after intrathecal administration, their penetration of the brain parenchyma and the different systems causing their efflux from the brain to the blood.
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Affiliation(s)
- Justine Paris
- Institut National de la Santé Et de la Recherche Médicale (INSERM), U942, 9 Rue de Chablis, 93000 Bobigny, France; (J.P.); (E.A.)
| | - Eurydice Angeli
- Institut National de la Santé Et de la Recherche Médicale (INSERM), U942, 9 Rue de Chablis, 93000 Bobigny, France; (J.P.); (E.A.)
- Assistance Publique Hôpitaux de Paris, Avicenne Hospital, Department of Medical Oncology, 93000 Bobigny, France
- Sorbonne Paris Nord University, 99 Avenue Jean Baptiste Clément, 93430 Villetaneuse, France
| | - Guilhem Bousquet
- Institut National de la Santé Et de la Recherche Médicale (INSERM), U942, 9 Rue de Chablis, 93000 Bobigny, France; (J.P.); (E.A.)
- Assistance Publique Hôpitaux de Paris, Avicenne Hospital, Department of Medical Oncology, 93000 Bobigny, France
- Sorbonne Paris Nord University, 99 Avenue Jean Baptiste Clément, 93430 Villetaneuse, France
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Mosca L, Ilari A, Fazi F, Assaraf YG, Colotti G. Taxanes in cancer treatment: Activity, chemoresistance and its overcoming. Drug Resist Updat 2021; 54:100742. [PMID: 33429249 DOI: 10.1016/j.drup.2020.100742] [Citation(s) in RCA: 128] [Impact Index Per Article: 42.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2020] [Revised: 11/12/2020] [Accepted: 11/16/2020] [Indexed: 02/07/2023]
Abstract
Since 1984, when paclitaxel was approved by the FDA for the treatment of advanced ovarian carcinoma, taxanes have been widely used as microtubule-targeting antitumor agents. However, their historic classification as antimitotics does not describe all their functions. Indeed, taxanes act in a complex manner, altering multiple cellular oncogenic processes including mitosis, angiogenesis, apoptosis, inflammatory response, and ROS production. On the one hand, identification of the diverse effects of taxanes on oncogenic signaling pathways provides opportunities to apply these cytotoxic drugs in a more rational manner. On the other hand, this may facilitate the development of novel treatment modalities to surmount anticancer drug resistance. In the latter respect, chemoresistance remains a major impediment which limits the efficacy of antitumor chemotherapy. Taxanes have shown impact on key molecular mechanisms including disruption of mitotic spindle, mitosis slippage and inhibition of angiogenesis. Furthermore, there is an emerging contribution of cellular processes including autophagy, oxidative stress, epigenetic alterations and microRNAs deregulation to the acquisition of taxane resistance. Hence, these two lines of findings are currently promoting a more rational and efficacious taxane application as well as development of novel molecular strategies to enhance the efficacy of taxane-based cancer treatment while overcoming drug resistance. This review provides a general and comprehensive picture on the use of taxanes in cancer treatment. In particular, we describe the history of application of taxanes in anticancer therapeutics, the synthesis of the different drugs belonging to this class of cytotoxic compounds, their features and the differences between them. We further dissect the molecular mechanisms of action of taxanes and the molecular basis underlying the onset of taxane resistance. We further delineate the possible modalities to overcome chemoresistance to taxanes, such as increasing drug solubility, delivery and pharmacokinetics, overcoming microtubule alterations or mitotic slippage, inhibiting drug efflux pumps or drug metabolism, targeting redox metabolism, immune response, and other cellular functions.
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Affiliation(s)
- Luciana Mosca
- Department of Biochemical Sciences "A. Rossi Fanelli", Sapienza University of Rome, P. le A. Moro 5, 00185 Rome, Italy
| | - Andrea Ilari
- Institute of Molecular Biology and Pathology, Italian National Research Council (IBPM-CNR), c/o Department of Biochemical Sciences "A. Rossi Fanelli", Sapienza University of Rome, P.le A. Moro 5, 00185 Rome, Italy.
| | - Francesco Fazi
- Dept. Anatomical, Histological, Forensic & Orthopedic Sciences, Section of Histology and Medical Embryology, Sapienza University, Via A. Scarpa 14-16, 00161 Rome, Italy
| | - Yehuda G Assaraf
- The Fred Wyszkowski Cancer Research Lab, Faculty of Biology, Technion-Israel Institute of Technology, Haifa 3200003, Israel
| | - Gianni Colotti
- Institute of Molecular Biology and Pathology, Italian National Research Council (IBPM-CNR), c/o Department of Biochemical Sciences "A. Rossi Fanelli", Sapienza University of Rome, P.le A. Moro 5, 00185 Rome, Italy.
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Najafzadeh B, Asadzadeh Z, Motafakker Azad R, Mokhtarzadeh A, Baghbanzadeh A, Alemohammad H, Abdoli Shadbad M, Vasefifar P, Najafi S, Baradaran B. The oncogenic potential of NANOG: An important cancer induction mediator. J Cell Physiol 2020; 236:2443-2458. [PMID: 32960465 DOI: 10.1002/jcp.30063] [Citation(s) in RCA: 32] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2020] [Revised: 09/02/2020] [Accepted: 09/07/2020] [Indexed: 12/11/2022]
Abstract
Cancer stem cells (CSCs) are a unique population in the tumor, but they only comprise 2%-5% of the tumor bulk. Although CSCs share several features with embryonic stem cells, CSCs can give rise to the tumor cells. CSCs overexpress embryonic transcription factor NANOG, which is downregulated in differentiated tissues. This transcription factor confers CSC's stemness, unlimited self-renewal, metastasis, invasiveness, angiogenesis, and drug-resistance with the assistance of WNT, OCT4, SOX2, Hedgehog, BMI-1, and other complexes. NANOG facilitates CSCs development via multiple pathways, like angiogenesis and lessening E-cadherin expression levels, which paves the road for metastasis. Moreover, NANOG represses apoptosis and leads to drug-resistance. This review aims to highlight the pivotal role of NANOG and the pertained pathways in CSCs. Also, this current study intends to demonstrate that targeting NANOG can dimmish the CSCs, sensitize the tumor to chemotherapy, and eradicate the cancer cells.
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Affiliation(s)
- Basira Najafzadeh
- Department of Biology, Faculty of Natural Sciences, University of Tabriz, Tabriz, Iran
| | - Zahra Asadzadeh
- Immunology Research Center, Tabriz University of Medical Sciences, Tabriz, Iran
| | | | - Ahad Mokhtarzadeh
- Immunology Research Center, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Amir Baghbanzadeh
- Immunology Research Center, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Hajar Alemohammad
- Department of Biology, Faculty of Natural Sciences, University of Tabriz, Tabriz, Iran
| | | | - Parisa Vasefifar
- Department of Biology, Faculty of Natural Sciences, University of Tabriz, Tabriz, Iran
| | - Souzan Najafi
- Immunology Research Center, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Behzad Baradaran
- Immunology Research Center, Tabriz University of Medical Sciences, Tabriz, Iran.,Department of Immunology, Faculty of Medicine, Tabriz University of Medical Sciences, Tabriz, Iran
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IPEC-J2 rMdr1a, a New Cell Line with Functional Expression of Rat P-glycoprotein Encoded by Rat Mdr1a for Drug Screening Purposes. Pharmaceutics 2020; 12:pharmaceutics12070673. [PMID: 32708885 PMCID: PMC7408396 DOI: 10.3390/pharmaceutics12070673] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2020] [Revised: 07/14/2020] [Accepted: 07/15/2020] [Indexed: 01/16/2023] Open
Abstract
The efflux pump P-glycoprotein (P-gp) affects drug distribution after absorption in humans and animals. P-gp is encoded by the multidrug resistance gene (MDR1) gene in humans, while rodents (the most common preclinical animal model) express the two isoforms Mdr1a and Mdr1b. Differences in substrate selectivity has also been reported. Our aim was to generate an in vitro cell model with tight barrier properties, expressing functional rat Mdr1a P-gp, as an in vitro tool for investigating species differences. The IPEC-J2 cell line forms extremely tight monolayers and was transfected with a plasmid carrying the rat Mdr1a gene sequence. Expression and P-gp localization at the apical membrane was demonstrated with Western blots and immunocytochemistry. Function of P-gp was shown through digoxin transport experiments in the presence and absence of the P-gp inhibitor zosuquidar. Bidirectional transport experiments across monolayers of the IPEC-J2 rMDR1a cell line and the IPEC-J2 MDR1 cell line, expressing human P-gp, showed comparable magnitude of transport in both the absorptive and efflux direction. We conclude that the newly established IPEC-J2 rMdr1a cell line, in combination with our previously established cell line IPEC-J2 MDR1, has the potential to be a strong in vitro tool to compare P-gp substrate profiles of rat and human P-gp.
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Influene of Pharmaceutical Excipients on the Membrane Transport of a P-glycoprotein Substrate in the Rat Small Intestine. Eur J Drug Metab Pharmacokinet 2020; 45:645-652. [PMID: 32583315 DOI: 10.1007/s13318-020-00631-7] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Abstract
BACKGROUND AND OBJECTIVES Generic drugs are generally used worldwide because of affordability compared to brand-name drugs. One of the main differences between brand-name and generic drugs is pharmaceutical excipients. We previously reported the effects of pharmaceutical excipients on the membrane permeation of drugs via the paracellular and transcellular routes, which are passive transport routes. P-glycoprotein (P-gp) is a typical ATP-binding cassette transporter and is mostly responsible for drug-drug interactions involving transporters. In the present study, rhodamine 123 (Rho123) was selected as the P-gp substrate, and the effects of pharmaceutical excipients on its membrane transport in the rat jejunum and ileum were examined. METHODS Twenty major pharmaceutical excipients widely used in the pharmaceutical industry were selected. The in vitro diffusion chamber method using the rat jejunum and ileum was employed to investigate the effects of pharmaceutical excipients on the membrane permeation of Rho123. RESULTS The results obtained showed that the membrane permeability of Rho123 significantly (P < 0.05) changed under certain dosage conditions of pharmaceutical excipients such as sodium carboxymethyl starch, pullulan, glyceryl monostearate and so on. Furthermore, the effects of pharmaceutical excipients were site specific in the small intestine. CONCLUSION The present results demonstrated that some pharmaceutical excipients altered the membrane permeability of Rho123 in the rat small intestine.
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Spears N, Lopes F, Stefansdottir A, Rossi V, De Felici M, Anderson RA, Klinger FG. Ovarian damage from chemotherapy and current approaches to its protection. Hum Reprod Update 2020; 25:673-693. [PMID: 31600388 PMCID: PMC6847836 DOI: 10.1093/humupd/dmz027] [Citation(s) in RCA: 318] [Impact Index Per Article: 79.5] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2019] [Revised: 07/18/2019] [Accepted: 07/23/2019] [Indexed: 12/19/2022] Open
Abstract
BACKGROUND Anti-cancer therapy is often a cause of premature ovarian insufficiency and infertility since the ovarian follicle reserve is extremely sensitive to the effects of chemotherapy and radiotherapy. While oocyte, embryo and ovarian cortex cryopreservation can help some women with cancer-induced infertility achieve pregnancy, the development of effective methods to protect ovarian function during chemotherapy would be a significant advantage. OBJECTIVE AND RATIONALE This paper critically discusses the different damaging effects of the most common chemotherapeutic compounds on the ovary, in particular, the ovarian follicles and the molecular pathways that lead to that damage. The mechanisms through which fertility-protective agents might prevent chemotherapy drug-induced follicle loss are then reviewed. SEARCH METHODS Articles published in English were searched on PubMed up to March 2019 using the following terms: ovary, fertility preservation, chemotherapy, follicle death, adjuvant therapy, cyclophosphamide, cisplatin, doxorubicin. Inclusion and exclusion criteria were applied to the analysis of the protective agents. OUTCOMES Recent studies reveal how chemotherapeutic drugs can affect the different cellular components of the ovary, causing rapid depletion of the ovarian follicular reserve. The three most commonly used drugs, cyclophosphamide, cisplatin and doxorubicin, cause premature ovarian insufficiency by inducing death and/or accelerated activation of primordial follicles and increased atresia of growing follicles. They also cause an increase in damage to blood vessels and the stromal compartment and increment inflammation. In the past 20 years, many compounds have been investigated as potential protective agents to counteract these adverse effects. The interactions of recently described fertility-protective agents with these damage pathways are discussed. WIDER IMPLICATIONS Understanding the mechanisms underlying the action of chemotherapy compounds on the various components of the ovary is essential for the development of efficient and targeted pharmacological therapies that could protect and prolong female fertility. While there are increasing preclinical investigations of potential fertility preserving adjuvants, there remains a lack of approaches that are being developed and tested clinically.
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Affiliation(s)
- N Spears
- Biomedical Sciences, University of Edinburgh, Edinburgh UK
| | - F Lopes
- Biomedical Sciences, University of Edinburgh, Edinburgh UK
| | | | - V Rossi
- Department of Biomedicine and Prevention, University of Rome Tor Vergata, Rome, Italy
| | - M De Felici
- Department of Biomedicine and Prevention, University of Rome Tor Vergata, Rome, Italy
| | - R A Anderson
- MRC Centre for Reproductive Health, University of Edinburgh, Edinburgh UK
| | - F G Klinger
- Department of Biomedicine and Prevention, University of Rome Tor Vergata, Rome, Italy
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Battista T, Fiorillo A, Chiarini V, Genovese I, Ilari A, Colotti G. Roles of Sorcin in Drug Resistance in Cancer: One Protein, Many Mechanisms, for a Novel Potential Anticancer Drug Target. Cancers (Basel) 2020; 12:cancers12040887. [PMID: 32268494 PMCID: PMC7226229 DOI: 10.3390/cancers12040887] [Citation(s) in RCA: 27] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2020] [Revised: 03/31/2020] [Accepted: 04/03/2020] [Indexed: 02/07/2023] Open
Abstract
The development of drug resistance is one of the main causes of failure in anti-cancer treatments. Tumor cells adopt many strategies to counteract the action of chemotherapeutic agents, e.g., enhanced DNA damage repair, inactivation of apoptotic pathways, alteration of drug targets, drug inactivation, and overexpression of ABC (Adenosine triphosphate-binding cassette, or ATP-binding cassette) transporters. These are broad substrate-specificity ATP-dependent efflux pumps able to export toxins or drugs out of cells; for instance, ABCB1 (MDR1, or P-glycoprotein 1), overexpressed in most cancer cells, confers them multidrug resistance (MDR). The gene coding for sorcin (SOluble Resistance-related Calcium-binding proteIN) is highly conserved among mammals and is located in the same chromosomal locus and amplicon as the ABC transporters ABCB1 and ABCB4, both in human and rodent genomes (two variants of ABCB1, i.e., ABCB1a and ABCB1b, are in rodent amplicon). Sorcin was initially characterized as a soluble protein overexpressed in multidrug (MD) resistant cells and named "resistance-related" because of its co-amplification with ABCB1. Although for years sorcin overexpression was thought to be only a by-product of the co-amplification with ABC transporter genes, many papers have recently demonstrated that sorcin plays an important part in MDR, indicating a possible role of sorcin as an oncoprotein. The present review illustrates sorcin roles in the generation of MDR via many mechanisms and points to sorcin as a novel potential target of different anticancer molecules.
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Affiliation(s)
- Theo Battista
- Department of Biochemical Sciences, Sapienza University, P.le A.Moro 5, 00185 Rome, Italy; (T.B.); (A.F.)
| | - Annarita Fiorillo
- Department of Biochemical Sciences, Sapienza University, P.le A.Moro 5, 00185 Rome, Italy; (T.B.); (A.F.)
| | - Valerio Chiarini
- Doctoral Programme in Integrative Life Science, Institute of Biotechnology, University of Helsinki, 00014 Helsinki, Finland;
| | - Ilaria Genovese
- Department of Medical Sciences, Laboratory for Technologies of Advanced Therapies, University of Ferrara, 44121 Ferrara, Italy;
| | - Andrea Ilari
- Institute of Molecular Biology and Pathology, Italian National Research Council, Istituto di Biologia e Patologia Molecolari, Consiglio Nazionale delle Ricerche (IBPM-CNR), c/o Department of Biochemical Sciences, Sapienza University, P.le A.Moro 5, 00185 Rome, Italy
- Correspondence: (A.I.); (G.C.)
| | - Gianni Colotti
- Institute of Molecular Biology and Pathology, Italian National Research Council, Istituto di Biologia e Patologia Molecolari, Consiglio Nazionale delle Ricerche (IBPM-CNR), c/o Department of Biochemical Sciences, Sapienza University, P.le A.Moro 5, 00185 Rome, Italy
- Correspondence: (A.I.); (G.C.)
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You D, Richardson JR, Aleksunes LM. Epigenetic Regulation of Multidrug Resistance Protein 1 and Breast Cancer Resistance Protein Transporters by Histone Deacetylase Inhibition. Drug Metab Dispos 2020; 48:459-480. [PMID: 32193359 DOI: 10.1124/dmd.119.089953] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2019] [Accepted: 02/13/2020] [Indexed: 02/06/2023] Open
Abstract
Multidrug resistance protein 1 (MDR1, ABCB1, P-glycoprotein) and breast cancer resistance protein (BCRP, ABCG2) are key efflux transporters that mediate the extrusion of drugs and toxicants in cancer cells and healthy tissues, including the liver, kidneys, and the brain. Altering the expression and activity of MDR1 and BCRP influences the disposition, pharmacodynamics, and toxicity of chemicals, including a number of commonly prescribed medications. Histone acetylation is an epigenetic modification that can regulate gene expression by changing the accessibility of the genome to transcriptional regulators and transcriptional machinery. Recently, studies have suggested that pharmacological inhibition of histone deacetylases (HDACs) modulates the expression and function of MDR1 and BCRP transporters as a result of enhanced histone acetylation. This review addresses the ability of HDAC inhibitors to modulate the expression and the function of MDR1 and BCRP transporters and explores the molecular mechanisms by which HDAC inhibition regulates these transporters. While the majority of studies have focused on histone regulation of MDR1 and BCRP in drug-resistant and drug-sensitive cancer cells, emerging data point to similar responses in nonmalignant cells and tissues. Elucidating epigenetic mechanisms regulating MDR1 and BCRP is important to expand our understanding of the basic biology of these two key transporters and subsequent consequences on chemoresistance as well as tissue exposure and responses to drugs and toxicants. SIGNIFICANCE STATEMENT: Histone deacetylase inhibitors alter the expression of key efflux transporters multidrug resistance protein 1 and breast cancer resistance protein in healthy and malignant cells.
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Affiliation(s)
- Dahea You
- Joint Graduate Program in Toxicology, Rutgers, The State University of New Jersey, Piscataway, New Jersey (D.Y.); Department of Environmental Health Sciences, Robert Stempel School of Public Health and Social Work, Florida International University, Miami, Florida (J.R.R.); Environmental and Occupational Health Sciences Institute, Piscataway, New Jersey (J.R.R., L.M.A.); and Department of Pharmacology and Toxicology, Rutgers, The State University of New Jersey, Ernest Mario School of Pharmacy, Piscataway, New Jersey (L.M.A.)
| | - Jason R Richardson
- Joint Graduate Program in Toxicology, Rutgers, The State University of New Jersey, Piscataway, New Jersey (D.Y.); Department of Environmental Health Sciences, Robert Stempel School of Public Health and Social Work, Florida International University, Miami, Florida (J.R.R.); Environmental and Occupational Health Sciences Institute, Piscataway, New Jersey (J.R.R., L.M.A.); and Department of Pharmacology and Toxicology, Rutgers, The State University of New Jersey, Ernest Mario School of Pharmacy, Piscataway, New Jersey (L.M.A.)
| | - Lauren M Aleksunes
- Joint Graduate Program in Toxicology, Rutgers, The State University of New Jersey, Piscataway, New Jersey (D.Y.); Department of Environmental Health Sciences, Robert Stempel School of Public Health and Social Work, Florida International University, Miami, Florida (J.R.R.); Environmental and Occupational Health Sciences Institute, Piscataway, New Jersey (J.R.R., L.M.A.); and Department of Pharmacology and Toxicology, Rutgers, The State University of New Jersey, Ernest Mario School of Pharmacy, Piscataway, New Jersey (L.M.A.)
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The ABCB Multidrug Resistance Proteins Do Not Contribute to Ivermectin Detoxification in the Colorado Potato Beetle, Leptinotarsa decemlineata (Say). INSECTS 2020; 11:insects11020135. [PMID: 32093187 PMCID: PMC7074147 DOI: 10.3390/insects11020135] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/27/2020] [Revised: 02/14/2020] [Accepted: 02/17/2020] [Indexed: 01/16/2023]
Abstract
The Colorado potato beetle, Leptinotarsa decemlineata (Say), is a significant agricultural pest that has developed resistance to many insecticides that are used to control it. Investigating the mechanisms of insecticide detoxification in this pest is important for ensuring its continued control, since they may be contributors to such resistance. Multidrug resistance (MDR) genes that code for the ABCB transmembrane efflux transporters are one potential source of insecticide detoxification activity that have not been thoroughly examined in L. decemlineata. In this study, we annotated the ABCB genes found in the L. decemlineata genome and then characterized the expression profiles across midgut, nerve, and Malpighian tubule tissues of the three full transporters identified. To investigate if these genes are involved in defense against the macrocyclic lactone insecticide ivermectin in this insect, each gene was silenced using RNA interference or MDR protein activity was inhibited using a chemical inhibitor, verapamil, before challenging the insects with a dose of ivermectin. Survival of the insects did not significantly change due to gene silencing or protein inhibition, suggesting that MDR transporters do not significantly contribute to defense against ivermectin in L. decemlineata.
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