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Yapryntseva MA, Zhivotovsky B, Gogvadze V. Permeabilization of the outer mitochondrial membrane: Mechanisms and consequences. Biochim Biophys Acta Mol Basis Dis 2024; 1870:167317. [PMID: 38909847 DOI: 10.1016/j.bbadis.2024.167317] [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: 03/31/2024] [Revised: 06/17/2024] [Accepted: 06/17/2024] [Indexed: 06/25/2024]
Abstract
Permeabilization of the outer mitochondrial membrane is а physiological process that can allow certain molecules to pass through it, such as low molecular weight solutes required for cellular respiration. This process is also important for the development of various modes of cell death. Depending on the severity of this process, cells can die by autophagy, apoptosis, or necrosis/necroptosis. Distinct types of pores can be opened at the outer mitochondrial membrane depending on physiological or pathological stimuli, and different mechanisms can be activated in order to open these pores. In this comprehensive review, all these types of permeabilization, the mechanisms of their activation, and their role in various diseases are discussed.
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Affiliation(s)
- Maria A Yapryntseva
- Engelhardt Institute of Molecular Biology, RAS, 119991 Moscow, Russia; Faculty of Medicine, Lomonosov Moscow State University, 119192 Moscow, Russia
| | - Boris Zhivotovsky
- Engelhardt Institute of Molecular Biology, RAS, 119991 Moscow, Russia; Faculty of Medicine, Lomonosov Moscow State University, 119192 Moscow, Russia; Institute of Environmental Medicine, Karolinska Institutet, SE-171 77 Stockholm, Sweden.
| | - Vladimir Gogvadze
- Faculty of Medicine, Lomonosov Moscow State University, 119192 Moscow, Russia; Institute of Environmental Medicine, Karolinska Institutet, SE-171 77 Stockholm, Sweden.
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2
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Prasad KN. Discovery of Alpha-Tocopheryl Succinate as a Cancer Treatment Agent Led to the Development of Methods to Potentially Improve the Efficacy of Cancer Therapy. JOURNAL OF THE AMERICAN NUTRITION ASSOCIATION 2023; 42:776-782. [PMID: 36735863 DOI: 10.1080/27697061.2023.2175389] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/03/2022] [Accepted: 01/28/2023] [Indexed: 02/05/2023]
Abstract
The discovery of alpha-tocopheryl succinate (alpha-TS) as a cancer therapeutic agent markedly stimulated research with or without tumor therapeutic agents on cancer cells and normal cells. Results showed that alpha-TS treatment induced apoptosis in cancer cells and enhanced the apoptotic effects of tumor therapeutic agents on tumor cells in a synergistic manner without affecting the growth of normal cells. Liposomal alpha-TS was more effective than alpha-TS. Some tumors are difficult to treat with chemotherapeutic agents while some become resistant of such treatment. Using a nanotechnology technique, it was demonstrated that alpha-TS conjugated with a chemotherapeutic agent enhanced the levels of apoptosis and restored the sensitivity of tumor cells to that chemotherapeutic agent. The mechanisms of action of alpha-TS alone or in combination with therapeutic agents include the following: (a) inhibition of the expression of oncogenes C-myc and H-ras; (b) alterations in the levels of expression of numerous genes; (c) activation of caspases; (d) inhibition of angiogenesis; (e) destabilization of mitochondria and lysosomes; (f) inhibition of production of production of prostaglandin E2 (PGE2) and PGE2-mediated pro-inflammatory responses; (g) reduction of survivin signaling pathway; and (h) reduction of CD47 expression on the tumor cell surface causing enhancement of phagocytic activity of macrophages leading to engulfment of tumor cells. Despite impressive results in cell culture and in animal models, no studies with alpha-TS alone or in combination with cancer therapeutic agents in human cancer resistant to these therapies have been performed.
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Prabhu SS, Nair AS, Nirmala SV. Multifaceted roles of mitochondrial dysfunction in diseases: from powerhouses to saboteurs. Arch Pharm Res 2023; 46:723-743. [PMID: 37751031 DOI: 10.1007/s12272-023-01465-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2023] [Accepted: 09/19/2023] [Indexed: 09/27/2023]
Abstract
The fact that mitochondria play a crucial part in energy generation has led to the nickname "powerhouses" of the cell being applied to them. They also play a significant role in many other cellular functions, including calcium signalling, apoptosis, and the creation of vital biomolecules. As a result, cellular function and health as a whole can be significantly impacted by mitochondrial malfunction. Indeed, malignancies frequently have increased levels of mitochondrial biogenesis and quality control. Adverse selection exists for harmful mitochondrial genome mutations, even though certain malignancies include modifications in the nuclear-encoded tricarboxylic acid cycle enzymes that generate carcinogenic metabolites. Since rare human cancers with mutated mitochondrial genomes are often benign, removing mitochondrial DNA reduces carcinogenesis. Therefore, targeting mitochondria offers therapeutic options since they serve several functions and are crucial to developing malignant tumors. Here, we discuss the various steps involved in the mechanism of cancer for which mitochondria plays a significant role, as well as the role of mitochondria in diseases other than cancer. It is crucial to understand mitochondrial malfunction to target these organelles for therapeutic reasons. This highlights the significance of investigating mitochondrial dysfunction in cancer and other disease research.
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Affiliation(s)
- Surapriya Surendranath Prabhu
- Department of Pharmaceutical Chemistry and Analysis, Amrita School of Pharmacy, AIMS Health Sciences Campus, Amrita Vishwa Vidyapeetham, Kochi, Kerala, 682041, India
| | - Aathira Sujathan Nair
- Department of Pharmaceutical Chemistry and Analysis, Amrita School of Pharmacy, AIMS Health Sciences Campus, Amrita Vishwa Vidyapeetham, Kochi, Kerala, 682041, India
| | - Saiprabha Vijayakumar Nirmala
- Department of Pharmaceutical Chemistry and Analysis, Amrita School of Pharmacy, AIMS Health Sciences Campus, Amrita Vishwa Vidyapeetham, Kochi, Kerala, 682041, India.
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4
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Abstract
Novel vitamin E chelate siderophore derivatives and their VV and FeIII complexes have been synthesised and the chemical and biological properties have been evaluated. In particular, the α- and δ-tocopherol derivatives with bis-methyldroxylamino triazine (α-tocTHMA) and (δ-tocDPA) as well their VV complexes, [V2VO3(α-tocTHMA)2] and [V2IVO3(δ-tocTHMA)2], have been synthesised and characterised by infrared (IR), nuclear magnetic resonance (NMR), electron paramagnetic resonance (EPR) and ultra violet-visible (UV-Vis) spectroscopies. The dimeric vanadium complexes in solution are in equilibrium with their respefrctive monomers, H2O + [V2VO2(μ-O)]4+ = 2 [VVO(OH)]2+. The two amphiphilic vanadium complexes exhibit enhanced hydrolytic stability. EPR shows that the complexes in lipophilic matrix are mild radical initiators. Evaluation of their biological activity shows that the compounds do not exhibit any significant cytotoxicity to cells.
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Oladimeji O, Akinyelu J, Daniels A, Singh M. Modified Gold Nanoparticles for Efficient Delivery of Betulinic Acid to Cancer Cell Mitochondria. Int J Mol Sci 2021; 22:ijms22105072. [PMID: 34064888 PMCID: PMC8150271 DOI: 10.3390/ijms22105072] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2021] [Revised: 04/26/2021] [Accepted: 04/28/2021] [Indexed: 02/07/2023] Open
Abstract
Advances in nanomedicine have seen the adaptation of nanoparticles (NPs) for subcellular delivery for enhanced therapeutic impact and reduced side effects. The pivotal role of the mitochondria in apoptosis and their potential as a target in cancers enables selective induction of cancer cell death. In this study, we examined the mitochondrial targeted delivery of betulinic acid (BA) by the mitochondriotropic TPP+-functionalized epigallocatechin gallate (EGCG)-capped gold NPs (AuNPs), comparing the impact of polyethylene glycol (PEG) and poly-L-lysine-graft-polyethylene glycol (PLL-g-PEG) copolymer on delivery efficacy. This included the assessment of their cellular uptake, mitochondrial localization and efficacy as therapeutic delivery platforms for BA in the human Caco-2, HeLa and MCF-7 cancer cell lines. These mitochondrial-targeted nanocomplexes demonstrated significant inhibition of cancer cell growth, with targeted nanocomplexes recording IC50 values in the range of 3.12–13.2 µM compared to that of the free BA (9.74–36.31 µM) in vitro, demonstrating the merit of mitochondrial targeting. Their mechanisms of action implicated high amplitude mitochondrial depolarization, caspases 3/7 activation, with an associated arrest at the G0/G1 phase of the cell cycle. This nano-delivery system is a potentially viable platform for mitochondrial-targeted delivery of BA and highlights mitochondrial targeting as an option in cancer therapy.
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6
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Karunakaran KB, Yanamala N, Boyce G, Becich MJ, Ganapathiraju MK. Malignant Pleural Mesothelioma Interactome with 364 Novel Protein-Protein Interactions. Cancers (Basel) 2021; 13:1660. [PMID: 33916178 PMCID: PMC8037232 DOI: 10.3390/cancers13071660] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2021] [Revised: 03/19/2021] [Accepted: 03/22/2021] [Indexed: 12/20/2022] Open
Abstract
Malignant pleural mesothelioma (MPM) is an aggressive cancer affecting the outer lining of the lung, with a median survival of less than one year. We constructed an 'MPM interactome' with over 300 computationally predicted protein-protein interactions (PPIs) and over 2400 known PPIs of 62 literature-curated genes whose activity affects MPM. Known PPIs of the 62 MPM associated genes were derived from Biological General Repository for Interaction Datasets (BioGRID) and Human Protein Reference Database (HPRD). Novel PPIs were predicted by applying the HiPPIP algorithm, which computes features of protein pairs such as cellular localization, molecular function, biological process membership, genomic location of the gene, and gene expression in microarray experiments, and classifies the pairwise features as interacting or non-interacting based on a random forest model. We validated five novel predicted PPIs experimentally. The interactome is significantly enriched with genes differentially ex-pressed in MPM tumors compared with normal pleura and with other thoracic tumors, genes whose high expression has been correlated with unfavorable prognosis in lung cancer, genes differentially expressed on crocidolite exposure, and exosome-derived proteins identified from malignant mesothelioma cell lines. 28 of the interactors of MPM proteins are targets of 147 U.S. Food and Drug Administration (FDA)-approved drugs. By comparing disease-associated versus drug-induced differential expression profiles, we identified five potentially repurposable drugs, namely cabazitaxel, primaquine, pyrimethamine, trimethoprim and gliclazide. Preclinical studies may be con-ducted in vitro to validate these computational results. Interactome analysis of disease-associated genes is a powerful approach with high translational impact. It shows how MPM-associated genes identified by various high throughput studies are functionally linked, leading to clinically translatable results such as repurposed drugs. The PPIs are made available on a webserver with interactive user interface, visualization and advanced search capabilities.
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Affiliation(s)
- Kalyani B. Karunakaran
- Supercomputer Education and Research Centre, Indian Institute of Science, Bangalore 560012, India;
| | - Naveena Yanamala
- Exposure Assessment Branch, National Institute of Occupational Safety and Health, Center for Disease Control, Morgantown, WV 26506, USA; (N.Y.); (G.B.)
| | - Gregory Boyce
- Exposure Assessment Branch, National Institute of Occupational Safety and Health, Center for Disease Control, Morgantown, WV 26506, USA; (N.Y.); (G.B.)
| | - Michael J. Becich
- Department of Biomedical Informatics, School of Medicine, University of Pittsburgh, Pittsburgh, PA 15206, USA;
| | - Madhavi K. Ganapathiraju
- Department of Biomedical Informatics, School of Medicine, University of Pittsburgh, Pittsburgh, PA 15206, USA;
- Intelligent Systems Program, School of Computing and Information, University of Pittsburgh, Pittsburgh, PA 15213, USA
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7
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Mitocans Revisited: Mitochondrial Targeting as Efficient Anti-Cancer Therapy. Int J Mol Sci 2020; 21:ijms21217941. [PMID: 33114695 PMCID: PMC7663685 DOI: 10.3390/ijms21217941] [Citation(s) in RCA: 68] [Impact Index Per Article: 17.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2020] [Revised: 10/19/2020] [Accepted: 10/24/2020] [Indexed: 12/14/2022] Open
Abstract
Mitochondria are essential cellular organelles, controlling multiple signalling pathways critical for cell survival and cell death. Increasing evidence suggests that mitochondrial metabolism and functions are indispensable in tumorigenesis and cancer progression, rendering mitochondria and mitochondrial functions as plausible targets for anti-cancer therapeutics. In this review, we summarised the major strategies of selective targeting of mitochondria and their functions to combat cancer, including targeting mitochondrial metabolism, the electron transport chain and tricarboxylic acid cycle, mitochondrial redox signalling pathways, and ROS homeostasis. We highlight that delivering anti-cancer drugs into mitochondria exhibits enormous potential for future cancer therapeutic strategies, with a great advantage of potentially overcoming drug resistance. Mitocans, exemplified by mitochondrially targeted vitamin E succinate and tamoxifen (MitoTam), selectively target cancer cell mitochondria and efficiently kill multiple types of cancer cells by disrupting mitochondrial function, with MitoTam currently undergoing a clinical trial.
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Macasoi I, Mioc A, Mioc M, Racoviceanu R, Soica I, Chevereșan A, Dehelean C, Dumitrașcu V. Targeting Mitochondria through the Use of Mitocans as Emerging Anticancer Agents. Curr Med Chem 2020; 27:5730-5757. [DOI: 10.2174/0929867326666190712150638] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2019] [Revised: 05/19/2019] [Accepted: 06/11/2019] [Indexed: 01/10/2023]
Abstract
Mitochondria are key players with a multi-functional role in many vital cellular processes,
such as energy metabolism, redox regulation, calcium homeostasis, Reactive Oxygen Species
(ROS) as well as in cell signaling, survival and apoptosis. These functions are mainly regulated
through important enzyme signaling cascades, which if altered may influence the outcome of cell
viability and apoptosis. Therefore some of the key enzymes that are vital for these signaling pathways
are emerging as important targets for new anticancer agent development. Mitocans are compounds
aimed at targeting mitochondria in cancer cells by altering mitochondrial functions thus
causing cell growth inhibition or apoptosis. This review summarizes the till present known classes
of mitocans, their mechanism of action and potential therapeutic use in different forms of cancer.
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Affiliation(s)
- Ioana Macasoi
- Faculty of Pharmacy, Victor Babes University of Medicine and Pharmacy, 2 Eftimie Murgu, Timisoara, Romania
| | - Alexandra Mioc
- Faculty of Pharmacy, Victor Babes University of Medicine and Pharmacy, 2 Eftimie Murgu, Timisoara, Romania
| | - Marius Mioc
- Faculty of Pharmacy, Victor Babes University of Medicine and Pharmacy, 2 Eftimie Murgu, Timisoara, Romania
| | - Roxana Racoviceanu
- Faculty of Pharmacy, Victor Babes University of Medicine and Pharmacy, 2 Eftimie Murgu, Timisoara, Romania
| | - Irina Soica
- Earlscliffe Sixth Form, Earlscliffe, 29 Shorncliffe Road, Folkestone, CT20 2NB, United Kingdom
| | - Adelina Chevereșan
- Faculty of Medicine, Victor Babes University of Medicine and Pharmacy, 2 Eftimie Murgu, Timisoara, Romania
| | - Cristina Dehelean
- Faculty of Pharmacy, Victor Babes University of Medicine and Pharmacy, 2 Eftimie Murgu, Timisoara, Romania
| | - Victor Dumitrașcu
- Faculty of Medicine, Victor Babes University of Medicine and Pharmacy, 2 Eftimie Murgu, Timisoara, Romania
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9
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Synthesis of vitamin E and aliphatic lipid vanadium(IV) and (V) complexes, and their cytotoxic properties. J Inorg Biochem 2020; 208:111074. [PMID: 32497827 DOI: 10.1016/j.jinorgbio.2020.111074] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2019] [Revised: 01/23/2020] [Accepted: 03/19/2020] [Indexed: 01/24/2023]
Abstract
Novel vitamin E chelate derivatives and their VIV/V complexes have been synthesized and characterized, and their anticancer properties have been evaluated. The new complexes have been designed to exhibit enhanced cytotoxicity by combining high lipophilicity with the properties of vanadium to induce the formation of reactive oxygen species (ROS). In particular, the β-tocopherol derivatives with iminodiethanol (β-tocDEA) and dipicolylamine (β-tocDPA) as well their VV and VIV complexes, [VVO(β-tocDEA] and [VIVO(β-tocDPA] have been synthesized and characterized by Nuclear Magnetic Resonance (NMR), Ultra Violet-Visible (UV-Vis) and Electron Paramagnetic Resonance (EPR) spectroscopies. Although the β-tocopherol compounds exhibit antioxidant activity their complexes induce formation of radicals. In addition, two vanadium amphiphilic complexes of 2,2'-((2-hydroxyoctadecyl)azanediyl)bis(ethan-1-ol) (C18DEA) and 1-(bis(pyridin-2-ylmethyl)amino)octadecan-2-ol (C18DPA) known to activate O2 and produce ROS were synthesized and characterized (C. Drouza, A. Dieronitou, I. Hadjiadamou, M. Stylianou, J. Agric. Food. Chem., vol. 65, 2017, pp. 4942-4951). The four amphiphilic vanadium complexes exhibit enhanced hydrolytic stability. All compounds found to be cytotoxic for cancer cells exhibiting activity similar or higher to cis-platin.
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10
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Iron Transport Tocopheryl Polyethylene Glycol Succinate in Animal Health and Diseases. Molecules 2019; 24:molecules24234289. [PMID: 31775281 PMCID: PMC6930530 DOI: 10.3390/molecules24234289] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2019] [Revised: 11/18/2019] [Accepted: 11/18/2019] [Indexed: 12/11/2022] Open
Abstract
Gut health is the starting place for maintaining the overall health of an animal. Strategies to maintain gut health are, thus, an important part in achieving the goal of improving animal health. A new strategy to do this involves two molecules: the iron transport protein ovotransferrin (IT) and α-tocopheryl polyethylene glycol succinate (TPGS), which result in the novel formulation of ITPGS. These molecules help reduce gut pathogens, while enhancing the absorption and bioavailability of therapeutic drugs, phytomedicines, and nanomedicines. This, in turn, helps to maintain normal health in animals. Maintaining the gastrointestinal tract (GIT) in its normal condition is key for successful absorption and efficacy of any nutrient. A compromised GIT, due to an imbalance (dysbiosis) in the GIT microbiome, can lead to an impaired GI barrier system with impaired absorption and overall health of the animal. The molecules in ITPGS may address the issue of poor absorption by keeping the GI system healthy by maintaining the normal microbiome and improving the absorption of nutrients through multiple mechanisms involving antioxidative, anti-inflammatory, immunomodulatory, and antimicrobial activities. The ITPGS technology can allow the dose of active pharmaceutical or herbal medicine to be significantly reduced in order to attain equal or better efficacy. With complimentary actions between IT and TPGS, ITPGS presents a novel approach to increase the bioavailability of drugs, phytoconstituents, nutrients, and nanomedicines by enhanced transport to the tissues at the site of action, while reducing gut pathogen load. The ITPGS approach appears to be a novel strategy for maintaining the health of animals by manipulation of microbiota.
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11
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Sato A, Arai T, Fusegi M, Ando A, Yano T. A Redox-Inactive Derivative of Tocotrienol Suppresses Tumor Growth of Mesothelioma Cells in a Xenograft Model. Biol Pharm Bull 2019; 42:1034-1037. [PMID: 31155579 DOI: 10.1248/bpb.b18-00924] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Malignant mesothelioma (MM) is an aggressive cancer with poor prognosis. We focused on the anticancer activity of tocotrienol (T3) and have reported that a new redox-inactive T3 derivative (6-O-carboxypropyl-α-tocotrienol; T3E) exerts stronger inhibitory effects on MM cell growth than that of T3 in vitro. Furthermore, we have revealed some mechanisms of T3E that are involved in anti-MM effects. However, the effect of T3E in vivo remains unclear. In this study, we compared the plasma concentrations of T3E to that of T3 using mice to clarify differences in pharmacokinetics. Blood was sequentially collected after oral administration of T3 or T3E, and plasma concentrations were analyzed by HPLC. The area under the plasma T3 and T3E concentration-time curve from 0 to 24 h (AUC0-24 h) of T3E was two times higher than that of T3. In addition, we evaluated the effect of T3E oral administration on tumor growth using a xenograft model of mice that were transplanted with human MM cells (H2052 cell line). Tumor volume was significantly reduced without body weight loss in mice orally administered 150 mg/kg T3E once per 2 d for 10 d, which suggests that T3E has potential anti-MM effects.
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Affiliation(s)
- Ayami Sato
- Institute of Life Innovation Studies, Toyo University.,Graduate School of Medical and Pharmaceutical Sciences, Chiba University
| | - Tsunetaka Arai
- Graduate School of Food and Nutritional Sciences, Toyo University
| | - Momoka Fusegi
- Graduate School of Food and Nutritional Sciences, Toyo University
| | - Akira Ando
- Faculty of Pharmaceutical Sciences, Setsunan University
| | - Tomohiro Yano
- Institute of Life Innovation Studies, Toyo University.,Graduate School of Food and Nutritional Sciences, Toyo University
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12
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Biasutto L, Mattarei A, La Spina M, Azzolini M, Parrasia S, Szabò I, Zoratti M. Strategies to target bioactive molecules to subcellular compartments. Focus on natural compounds. Eur J Med Chem 2019; 181:111557. [PMID: 31374419 DOI: 10.1016/j.ejmech.2019.07.060] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2019] [Revised: 07/04/2019] [Accepted: 07/21/2019] [Indexed: 02/06/2023]
Abstract
Many potential pharmacological targets are present in multiple subcellular compartments and have different pathophysiological roles depending on location. In these cases, selective targeting of a drug to the relevant subcellular domain(s) may help to sharpen its impact by providing topological specificity, thus limiting side effects, and to concentrate the compound where needed, thus increasing its effectiveness. We review here the state of the art in precision subcellular delivery. The major approaches confer "homing" properties to the active principle via permanent or reversible (in pro-drug fashion) modifications, or through the use of special-design nanoparticles or liposomes to ferry a drug(s) cargo to its desired destination. An assortment of peptides, substituents with delocalized positive charges, custom-blended lipid mixtures, pH- or enzyme-sensitive groups provide the main tools of the trade. Mitochondria, lysosomes and the cell membrane may be mentioned as the fronts on which the most significant advances have been made. Most of the examples presented here have to do with targeting natural compounds - in particular polyphenols, known as pleiotropic agents - to one or the other subcellular compartment.
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Affiliation(s)
- Lucia Biasutto
- CNR Neuroscience Institute, Viale G. Colombo 3, 35121, Padova, Italy; Dept. Biomedical Sciences, University of Padova, Viale G. Colombo 3, 35121, Padova, Italy.
| | - Andrea Mattarei
- Dept. Pharmaceutical and Pharmacological Sciences, University of Padova, Via Marzolo 5, 35131, Padova, Italy
| | - Martina La Spina
- Dept. Biomedical Sciences, University of Padova, Viale G. Colombo 3, 35121, Padova, Italy
| | - Michele Azzolini
- Dept. Biomedical Sciences, University of Padova, Viale G. Colombo 3, 35121, Padova, Italy
| | - Sofia Parrasia
- Dept. Biomedical Sciences, University of Padova, Viale G. Colombo 3, 35121, Padova, Italy
| | - Ildikò Szabò
- CNR Neuroscience Institute, Viale G. Colombo 3, 35121, Padova, Italy; Dept. Biology, University of Padova, Viale G. Colombo 3, 35121, Padova, Italy
| | - Mario Zoratti
- CNR Neuroscience Institute, Viale G. Colombo 3, 35121, Padova, Italy; Dept. Biomedical Sciences, University of Padova, Viale G. Colombo 3, 35121, Padova, Italy
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13
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Liu Y, Li Q, Xiong X, Huang Y, Zhou Z. Mitochondria-targeting and cell-penetrating peptides-co-modified HPMA copolymers for enhancing therapeutic efficacy of α-tocopheryl succinate. J Mater Chem B 2018; 6:7674-7683. [PMID: 32254889 DOI: 10.1039/c8tb02621a] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
Targeting drugs at mitochondria may provide an effective means of inducing cell death for cancer therapy. Here, we introduce a conjugate of a dual-ligand-modified N-(2-hydroxypropyl)methacrylamide (HPMA) copolymer with α-tocopheryl succinate (α-TOS) (P-TOS-SS20-dNP2), which could simultaneously enhance cellular uptake via the cell-penetrating peptide dNP2 and implement delivery to mitochondria by means of the mitochondria-targeting peptide SS20. The results showed that co-modification with SS20 and dNP2 peptides successfully made up for the deficiencies of each peptide: copolymers singly modified with dNP2 were unable to increase their mitochondrial distribution in spite of increased cellular uptake, whereas copolymers singly modified with SS20 exhibited restricted mitochondrial targeting because of their poor uptake. The combination of these two functional peptides resulted in conspicuous cellular uptake and a 7.6-fold increase in accumulation in mitochondria in comparison with unmodified HPMA polymer-drug conjugates in vitro. Moreover, the dual-modified polymer-drug conjugate P-TOS-SS20-dNP2 exhibited the greatest increase in the generation of reactive oxygen species in HeLa cells, followed by great opening of mitochondrial permeability transition pores and a sharp reduction in the mitochondrial membrane potential. This further led to superior cell apoptosis in comparison with singly or non-peptide-modified HPMA copolymer-drug conjugates. The results demonstrated that combining a mitochondria-targeting peptide and a cell-penetrating peptide would substantially increase the distribution of HPMA copolymers in mitochondria, which implied an efficient strategy for promoting mitochondrial targeting efficiency.
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Affiliation(s)
- Yanxi Liu
- Key Laboratory of Drug Targeting and Drug Delivery System of the Education Ministry, West China School of Pharmacy, Sichuan University, No. 17, Block 3, Southern Renmin Road, Chengdu 610041, P. R. China.
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14
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Hepatocellular carcinomas are promoted by tocopheryl acetate but eliminated by tocopheryl succinate. JOURNAL OF NUTRITION & INTERMEDIARY METABOLISM 2018. [DOI: 10.1016/j.jnim.2018.07.006] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
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15
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Nedopekina DA, Gubaidullin RR, Odinokov VN, Maximchik PV, Zhivotovsky B, Bel'skii YP, Khazanov VA, Manuylova AV, Gogvadze V, Spivak AY. Mitochondria-targeted betulinic and ursolic acid derivatives: synthesis and anticancer activity. MEDCHEMCOMM 2017; 8:1934-1945. [PMID: 30108714 PMCID: PMC6072465 DOI: 10.1039/c7md00248c] [Citation(s) in RCA: 46] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/15/2017] [Accepted: 08/17/2017] [Indexed: 12/21/2022]
Abstract
A series of new betulinic and ursolic acid conjugates with a lipophilic triphenylphosphonium cation, meant to enhance the bioavailability and mitochondriotropic action of natural triterpenes, have been synthesized. The in vitro experiments on three human cancer cell lines (MCF-7, HCT-116 and TET21N) revealed that all the obtained triphenylphosphonium triterpene acid derivatives not only showed higher cytotoxicity as compared to betulinic acid but were also markedly superior in triggering mitochondria-dependent apoptosis, as assessed using a range of apoptosis markers such as cytochrome c release, stimulation of caspase-3 activity, and cleavage of poly(ADP-ribose) polymerase, which is one of the targets of caspase 3. The IC50 was much lower for all triphenylphosphonium derivatives when compared to betulinic acid. Out of the tested group of conjugates, the most potent toxicity was exhibited by the betulinic acid conjugate 9 (for 9, the IC50 values against MCF-7 and TET21N cells were 0.70 μM and 0.74 μM; for betulinic acid (BA), IC50 > 25 μM against MCF-7 cells).
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Affiliation(s)
- Darya A Nedopekina
- Institute of Petrochemistry and Catalysis , Russian Academy of Sciences , 141 prosp. Oktyabrya , Ufa 450075 , Russian Federation .
| | - Rinat R Gubaidullin
- Institute of Petrochemistry and Catalysis , Russian Academy of Sciences , 141 prosp. Oktyabrya , Ufa 450075 , Russian Federation .
| | - Victor N Odinokov
- Institute of Petrochemistry and Catalysis , Russian Academy of Sciences , 141 prosp. Oktyabrya , Ufa 450075 , Russian Federation .
| | - Polina V Maximchik
- Faculty of Fundamental Medicine , MV Lomonosov Moscow State University , 11999 Moscow , Russia .
| | - Boris Zhivotovsky
- Faculty of Fundamental Medicine , MV Lomonosov Moscow State University , 11999 Moscow , Russia .
- Division of Toxicology , Institute of Environmental Medicine , Karolinska Institutet , Box 210 , 17177 Stockholm , Sweden
| | - Yuriy P Bel'skii
- Innovative Pharmacology Research (IPHAR) , 79/4 Elizarova , Tomsk 634021 , Russian Federation
| | - Veniamin A Khazanov
- Innovative Pharmacology Research (IPHAR) , 79/4 Elizarova , Tomsk 634021 , Russian Federation
| | - Arina V Manuylova
- Innovative Pharmacology Research (IPHAR) , 79/4 Elizarova , Tomsk 634021 , Russian Federation
| | - Vladimir Gogvadze
- Faculty of Fundamental Medicine , MV Lomonosov Moscow State University , 11999 Moscow , Russia .
- Division of Toxicology , Institute of Environmental Medicine , Karolinska Institutet , Box 210 , 17177 Stockholm , Sweden
| | - Anna Yu Spivak
- Institute of Petrochemistry and Catalysis , Russian Academy of Sciences , 141 prosp. Oktyabrya , Ufa 450075 , Russian Federation .
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16
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Zielonka J, Sikora A, Hardy M, Ouari O, Vasquez-Vivar J, Cheng G, Lopez M, Kalyanaraman B. Mitochondria-Targeted Triphenylphosphonium-Based Compounds: Syntheses, Mechanisms of Action, and Therapeutic and Diagnostic Applications. Chem Rev 2017; 117:10043-10120. [PMID: 28654243 PMCID: PMC5611849 DOI: 10.1021/acs.chemrev.7b00042] [Citation(s) in RCA: 942] [Impact Index Per Article: 134.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
Mitochondria are recognized as one of the most important targets for new drug design in cancer, cardiovascular, and neurological diseases. Currently, the most effective way to deliver drugs specifically to mitochondria is by covalent linking a lipophilic cation such as an alkyltriphenylphosphonium moiety to a pharmacophore of interest. Other delocalized lipophilic cations, such as rhodamine, natural and synthetic mitochondria-targeting peptides, and nanoparticle vehicles, have also been used for mitochondrial delivery of small molecules. Depending on the approach used, and the cell and mitochondrial membrane potentials, more than 1000-fold higher mitochondrial concentration can be achieved. Mitochondrial targeting has been developed to study mitochondrial physiology and dysfunction and the interaction between mitochondria and other subcellular organelles and for treatment of a variety of diseases such as neurodegeneration and cancer. In this Review, we discuss efforts to target small-molecule compounds to mitochondria for probing mitochondria function, as diagnostic tools and potential therapeutics. We describe the physicochemical basis for mitochondrial accumulation of lipophilic cations, synthetic chemistry strategies to target compounds to mitochondria, mitochondrial probes, and sensors, and examples of mitochondrial targeting of bioactive compounds. Finally, we review published attempts to apply mitochondria-targeted agents for the treatment of cancer and neurodegenerative diseases.
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Affiliation(s)
- Jacek Zielonka
- Department of Biophysics, Medical College of Wisconsin, 8701 Watertown Plank Road, Milwaukee, WI 53226, United States
- Free Radical Research Center, Medical College of Wisconsin, 8701 Watertown Plank Road, Milwaukee, WI 53226, United States
- Cancer Center, Medical College of Wisconsin, 8701 Watertown Plank Road, Milwaukee, WI 53226, United States
| | - Adam Sikora
- Institute of Applied Radiation Chemistry, Lodz University of Technology, ul. Wroblewskiego 15, 93-590 Lodz, Poland
| | - Micael Hardy
- Aix Marseille Univ, CNRS, ICR, UMR 7273, 13013 Marseille, France
| | - Olivier Ouari
- Aix Marseille Univ, CNRS, ICR, UMR 7273, 13013 Marseille, France
| | - Jeannette Vasquez-Vivar
- Department of Biophysics, Medical College of Wisconsin, 8701 Watertown Plank Road, Milwaukee, WI 53226, United States
- Free Radical Research Center, Medical College of Wisconsin, 8701 Watertown Plank Road, Milwaukee, WI 53226, United States
| | - Gang Cheng
- Department of Biophysics, Medical College of Wisconsin, 8701 Watertown Plank Road, Milwaukee, WI 53226, United States
- Free Radical Research Center, Medical College of Wisconsin, 8701 Watertown Plank Road, Milwaukee, WI 53226, United States
| | - Marcos Lopez
- Translational Biomedical Research Group, Biotechnology Laboratories, Cardiovascular Foundation of Colombia, Carrera 5a No. 6-33, Floridablanca, Santander, Colombia, 681003
- Graduate Program of Biomedical Sciences, Faculty of Health, Universidad del Valle, Calle 4B No. 36-00, Cali, Colombia, 760032
| | - Balaraman Kalyanaraman
- Department of Biophysics, Medical College of Wisconsin, 8701 Watertown Plank Road, Milwaukee, WI 53226, United States
- Free Radical Research Center, Medical College of Wisconsin, 8701 Watertown Plank Road, Milwaukee, WI 53226, United States
- Cancer Center, Medical College of Wisconsin, 8701 Watertown Plank Road, Milwaukee, WI 53226, United States
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17
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Hebert L, Bellanger D, Guillas C, Campagne A, Dingli F, Loew D, Fievet A, Jacquemin V, Popova T, Jean D, Mechta-Grigoriou F, Margueron R, Stern MH. Modulating BAP1 expression affects ROS homeostasis, cell motility and mitochondrial function. Oncotarget 2017; 8:72513-72527. [PMID: 29069806 PMCID: PMC5641149 DOI: 10.18632/oncotarget.19872] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2016] [Accepted: 07/23/2017] [Indexed: 12/30/2022] Open
Abstract
The tumor suppressor BAP1 associates with ASXL1/2 to form the core Polycomb complex PR-DUB, which catalyzes the removal of mono-ubiquitin from several substrates including histone H2A. This complex also mediates the poly-deubiquitination of HCFC1, OGT and PCG1-α, preventing them from proteasomal degradation. Surprisingly, considering its role in a Polycomb complex, no transcriptional signature was consistently found among BAP1-inactivated tumor types. It was hypothesized that BAP1 tumor suppressor activity could reside, at least in part, in stabilizing proteins through its poly-deubiquitinase activity. Quantitative mass spectrometry and gene expression arrays were used to investigate the consequences of BAP1 expression modulation in the NCI-H226 mesothelioma cell line. Analysis of differentially expressed proteins revealed enrichment in cytoskeleton organization, mitochondrial activity and ROS management, while gene expression analysis revealed enrichment in the epithelial-to-mesenchymal transition pathway. Functional assessments in BAP1 inactivated, BAP1 wild-type and BAP1 catalytically dead-expressing NCI-H226 and QR mesothelioma cell lines confirmed alteration of these pathways and demonstrated that BAP1 deubiquitinase activity was mandatory to maintain these phenotypes. Interestingly, monitoring intracellular ROS levels partly restored the morphology and the mitochondrial activity. Finally, the study suggests new tumorigenic and cellular functions of BAP1 and shows for the first time the interest of studying the proteome as readout of BAP1 inactivation.
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Affiliation(s)
- Lucie Hebert
- Department of Genetics and Biology of Cancers, INSERM U830, Institut Curie, PSL Research University, Paris 75248, France
| | - Dorine Bellanger
- Department of Genetics and Biology of Cancers, INSERM U830, Institut Curie, PSL Research University, Paris 75248, France
| | - Chloé Guillas
- Department of Genetics and Biology of Cancers, INSERM U830, Institut Curie, PSL Research University, Paris 75248, France
| | - Antoine Campagne
- Department of Developmental Biology and Genetics, CNRS UMR 3215/INSERM U934, Institut Curie, PSL Research University, Paris 75248, France
| | - Florent Dingli
- Mass Spectrometry and Proteomics facility, Institut Curie, PSL Research University, Paris 75248, France
| | - Damarys Loew
- Mass Spectrometry and Proteomics facility, Institut Curie, PSL Research University, Paris 75248, France
| | - Alice Fievet
- Department of Genetics and Biology of Cancers, INSERM U830, Institut Curie, PSL Research University, Paris 75248, France.,Department of Genetics, Institut Curie, Paris 75248, France
| | - Virginie Jacquemin
- Department of Genetics and Biology of Cancers, INSERM U830, Institut Curie, PSL Research University, Paris 75248, France
| | - Tatiana Popova
- Department of Genetics and Biology of Cancers, INSERM U830, Institut Curie, PSL Research University, Paris 75248, France
| | | | - Fatima Mechta-Grigoriou
- Department of Genetics and Biology of Cancers, INSERM U830, Institut Curie, PSL Research University, Paris 75248, France
| | - Raphaël Margueron
- Department of Developmental Biology and Genetics, CNRS UMR 3215/INSERM U934, Institut Curie, PSL Research University, Paris 75248, France
| | - Marc-Henri Stern
- Department of Genetics and Biology of Cancers, INSERM U830, Institut Curie, PSL Research University, Paris 75248, France.,Department of Genetics, Institut Curie, Paris 75248, France
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18
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Triphenylphosphonium cations of betulinic acid derivatives: synthesis and antitumor activity. Med Chem Res 2017. [DOI: 10.1007/s00044-016-1771-z] [Citation(s) in RCA: 38] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
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19
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Chew SH, Toyokuni S. Malignant mesothelioma as an oxidative stress-induced cancer: An update. Free Radic Biol Med 2015; 86:166-78. [PMID: 25975982 DOI: 10.1016/j.freeradbiomed.2015.05.002] [Citation(s) in RCA: 57] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/26/2014] [Revised: 04/10/2015] [Accepted: 05/01/2015] [Indexed: 10/23/2022]
Abstract
Malignant mesothelioma (MM) is a relatively rare cancer that occurs almost exclusively following respiratory exposure to asbestos in humans. Its pathogenesis is closely associated with iron overload and oxidative stress in mesothelial cells. On fiber exposure, mesothelial cells accumulate fibers simultaneously with iron, which either performs physical scissor function or catalyzes free radical generation, leading to oxidative DNA damage such as strand breaks and base modifications, followed by activation of intracellular signaling pathways. Chrysotile, per se without iron, causes massive hemolysis and further adsorbs hemoglobin. Exposure to indigestible foreign materials also induces chronic inflammation, involving consistent generation of free radicals and subsequent activation of NALP3 inflammasomes in macrophages. All of these contribute to mesothelial carcinogenesis. Genomic alterations most frequently involve homozygous deletion of INK4A/4B, and other pathways such as Hippo and TGF-β pathways are also affected in MM. Recently, analyses of familial MM sorted out BAP1 as a novel responsible tumor suppressor gene, whose function is not fully elucidated. Five-year survival of mesothelioma is still ~8%, and this cancer is increasing worldwide. Connective tissue growth factor, a secretory protein creating a vicious cycle mediated by β-catenin, has been recognized as a hopeful target for therapy, especially in sarcomatoid subtype. Recent research outcomes related to microRNAs and cancer stem cells also offer additional novel targets for the treatment of MM. Iron reduction as chemoprevention of mesothelioma is helpful at least in an animal preclinical study. Integrated approaches to fiber-induced oxidative stress would be necessary to overcome this currently fatal disease.
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Affiliation(s)
- Shan Hwu Chew
- Department of Pathology and Biological Responses, Nagoya University Graduate School of Medicine, 65 Tsurumai-cho, Showa-ku, Nagoya 466-8550, Japan
| | - Shinya Toyokuni
- Department of Pathology and Biological Responses, Nagoya University Graduate School of Medicine, 65 Tsurumai-cho, Showa-ku, Nagoya 466-8550, Japan.
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20
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Drug Delivery Innovations for Enhancing the Anticancer Potential of Vitamin E Isoforms and Their Derivatives. BIOMED RESEARCH INTERNATIONAL 2015; 2015:584862. [PMID: 26137487 PMCID: PMC4475563 DOI: 10.1155/2015/584862] [Citation(s) in RCA: 47] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/20/2015] [Revised: 04/12/2015] [Accepted: 04/15/2015] [Indexed: 12/13/2022]
Abstract
Vitamin E isoforms have been extensively studied for their anticancer properties. Novel drug delivery systems (DDS) that include liposomes, nanoparticles, and micelles are actively being developed to improve Vitamin E delivery. Furthermore, several drug delivery systems that incorporate Vitamin E isoforms have been synthesized in order to increase the bioavailability of chemotherapeutic agents or to provide a synergistic effect. D-alpha-tocopheryl polyethylene glycol succinate (Vitamin E TPGS or TPGS) is a synthetic derivative of natural alpha-tocopherol which is gaining increasing interest in the development of drug delivery systems and has also shown promising anticancer effect as a single agent. This review provides a summary of the properties and anticancer effects of the most potent Vitamin E isoforms and an overview of the various formulations developed to improve their efficacy, with an emphasis on the use of TPGS in drug delivery approaches.
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21
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Pasdar EA, Smits M, Stapelberg M, Bajzikova M, Stantic M, Goodwin J, Yan B, Stursa J, Kovarova J, Sachaphibulkij K, Bezawork-Geleta A, Sobol M, Filimonenko A, Tomasetti M, Zobalova R, Hozak P, Dong LF, Neuzil J. Characterisation of mesothelioma-initiating cells and their susceptibility to anti-cancer agents. PLoS One 2015; 10:e0119549. [PMID: 25932953 PMCID: PMC4416766 DOI: 10.1371/journal.pone.0119549] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2014] [Accepted: 01/14/2015] [Indexed: 01/06/2023] Open
Abstract
Malignant mesothelioma (MM) is an aggressive type of tumour causing high mortality. One reason for this paradigm may be the existence of a subpopulation of tumour-initiating cells (TICs) that endow MM with drug resistance and recurrence. The objective of this study was to identify and characterise a TIC subpopulation in MM cells, using spheroid cultures, mesospheres, as a model of MM TICs. Mesospheres, typified by the stemness markers CD24, ABCG2 and OCT4, initiated tumours in immunodeficient mice more efficiently than adherent cells. CD24 knock-down cells lost the sphere-forming capacity and featured lower tumorigenicity. Upon serial transplantation, mesospheres were gradually more efficiently tumrigenic with increased level of stem cell markers. We also show that mesospheres feature mitochondrial and metabolic properties similar to those of normal and cancer stem cells. Finally, we show that mesothelioma-initiating cells are highly susceptible to mitochondrially targeted vitamin E succinate. This study documents that mesospheres can be used as a plausible model of mesothelioma-initiating cells and that they can be utilised in the search for efficient agents against MM.
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Affiliation(s)
| | - Michael Smits
- School of Medical Science, Griffith University, Southport, Queensland, Australia
| | - Michael Stapelberg
- School of Medical Science, Griffith University, Southport, Queensland, Australia
| | - Martina Bajzikova
- Institute of Biotechnology, Academy of Sciences of the Czech Republic, Prague, Czech Republic
| | - Marina Stantic
- School of Medical Science, Griffith University, Southport, Queensland, Australia
| | - Jacob Goodwin
- School of Medical Science, Griffith University, Southport, Queensland, Australia
| | - Bing Yan
- School of Medical Science, Griffith University, Southport, Queensland, Australia
| | - Jan Stursa
- Biomedical Research Center, University Hospital Hradec Kralove, Hradec Kralove, Czech Republic
| | - Jaromira Kovarova
- Institute of Biotechnology, Academy of Sciences of the Czech Republic, Prague, Czech Republic
| | | | | | - Margaryta Sobol
- Institute of Molecular Genetics, Academy of Sciences of the Czech Republic, Prague, Czech Republic
| | - Anatoly Filimonenko
- Institute of Molecular Genetics, Academy of Sciences of the Czech Republic, Prague, Czech Republic
| | - Marco Tomasetti
- Department of Molecular and Clinical Sciences, Polytechnic University of Marche, Ancona, Italy
| | - Renata Zobalova
- School of Medical Science, Griffith University, Southport, Queensland, Australia
- Institute of Biotechnology, Academy of Sciences of the Czech Republic, Prague, Czech Republic
| | - Pavel Hozak
- Institute of Molecular Genetics, Academy of Sciences of the Czech Republic, Prague, Czech Republic
| | - Lan-Feng Dong
- School of Medical Science, Griffith University, Southport, Queensland, Australia
| | - Jiri Neuzil
- School of Medical Science, Griffith University, Southport, Queensland, Australia
- Institute of Biotechnology, Academy of Sciences of the Czech Republic, Prague, Czech Republic
- * E-mail:
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22
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Kluckova K, Dong LF, Bajzikova M, Rohlena J, Neuzil J. Evaluation of respiration of mitochondria in cancer cells exposed to mitochondria-targeted agents. Methods Mol Biol 2015; 1265:181-94. [PMID: 25634276 DOI: 10.1007/978-1-4939-2288-8_14] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Abstract
Respiration is one of the major functions of mitochondria, whereby these vital organelles use oxygen to produce energy. Many agents that may be of potential clinical relevance act by targeting mitochondria, where they may suppress mitochondrial respiration. It is therefore important to evaluate this process and understand how this is modulated by small molecules. Here, we describe the general methodology to assess respiration in cultured cells, followed by the evaluation of the effect of one anticancer agent targeted to mitochondria on this process, and also how to assess this in tumor tissue.
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Affiliation(s)
- Katarina Kluckova
- Institute of Biotechnology, Academy of Sciences of the Czech Republic, Prague, Czech Republic
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23
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Vondrusova M, Bezawork-Geleta A, Sachaphibulkij K, Truksa J, Neuzil J. The effect of mitochondrially targeted anticancer agents on mitochondrial (super)complexes. Methods Mol Biol 2015; 1265:195-208. [PMID: 25634277 DOI: 10.1007/978-1-4939-2288-8_15] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
The mitochondrial respiratory chain is organized into dynamic high molecular weight complexes that associate to form supercomplexes. The function of these SCs is to minimize the production of reactive oxygen species (ROS) generated during electron transfer within them and to efficiently transfer electrons to complex IV. These supra-molecular structures as well as whole mitochondria are stress-responsive and respond to mitochondrially targeted anti-cancer agent by destabilization and induction of massive production of ROS leading to apoptosis. We have recently developed mitochondrially targeted anti-cancer agents epitomized by the mitochondrially targeted analogue of the redox-silent compound vitamin E succinate, which belongs to the group of agents that kill cancer cells via their mitochondria-destabilizing activity, referred to as mitocans. To understand the molecular mechanism of the effect of such agents, the use of native blue gel electrophoresis and clear native electrophoresis coupled with in-gel activity assays, are methods of choice. The relevant methodology is described in this chapter.
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Affiliation(s)
- Magdalena Vondrusova
- Institute of Biotechnology, Academy of Sciences of the Czech Republic, Prague, Czech Republic
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24
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Kruspig B, Zhivotovsky B, Gogvadze V. Mitochondrial substrates in cancer: drivers or passengers? Mitochondrion 2014; 19 Pt A:8-19. [PMID: 25179741 DOI: 10.1016/j.mito.2014.08.007] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2014] [Accepted: 08/26/2014] [Indexed: 01/20/2023]
Abstract
The majority of cancers demonstrate various tumor-specific metabolic aberrations, such as increased glycolysis even under aerobic conditions (Warburg effect), whereas mitochondrial metabolic activity and their contribution to cellular energy production are restrained. One of the most important mechanisms for this metabolic switch is the alteration in the abundance, utilization, and localization of various mitochondrial substrates. Numerous lines of evidence connect disturbances in mitochondrial metabolic pathways with tumorigenesis and provide an intriguing rationale for utilizing mitochondria as targets for anti-cancer therapy.
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Affiliation(s)
- Björn Kruspig
- Division of Toxicology, Institute of Environmental Medicine Karolinska Institutet, Box 210 171 77 Stockholm, Sweden
| | - Boris Zhivotovsky
- Division of Toxicology, Institute of Environmental Medicine Karolinska Institutet, Box 210 171 77 Stockholm, Sweden; MV Lomonosov Moscow State University, 119991 Moscow, Russia
| | - Vladimir Gogvadze
- Division of Toxicology, Institute of Environmental Medicine Karolinska Institutet, Box 210 171 77 Stockholm, Sweden; MV Lomonosov Moscow State University, 119991 Moscow, Russia.
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