1
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Liu P, Zhang B, Li Y, Yuan Q. Potential mechanisms of cancer prevention and treatment by sulforaphane, a natural small molecule compound of plant-derived. Mol Med 2024; 30:94. [PMID: 38902597 DOI: 10.1186/s10020-024-00842-7] [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: 12/28/2023] [Accepted: 05/20/2024] [Indexed: 06/22/2024] Open
Abstract
Despite recent advances in tumor diagnosis and treatment technologies, the number of cancer cases and deaths worldwide continues to increase yearly, creating an urgent need to find new methods to prevent or treat cancer. Sulforaphane (SFN), as a member of the isothiocyanates (ITCs) family, which is the hydrolysis product of glucosinolates (GLs), has been shown to have significant preventive and therapeutic cancer effects in different human cancers. Early studies have shown that SFN scavenges oxygen radicals by increasing cellular defenses against oxidative damage, mainly through the induction of phase II detoxification enzymes by nuclear factor erythroid 2-related factor 2 (Nrf2). More and more studies have shown that the anticancer mechanism of SFN also includes induction of apoptotic pathway in tumor cells, inhibition of cell cycle progression, and suppression of tumor stem cells. Therefore, the application of SFN is expected to be a necessary new approach to treating cancer. In this paper, we review the multiple molecular mechanisms of SFN in cancer prevention and treatment in recent years, which can provide a new vision for cancer treatment.
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Affiliation(s)
- Pengtao Liu
- State Key Laboratory of Chemical Resource Engineering, College of Life Science and Technology, Beijing University of Chemical Technology, Beijing, P. R. China
| | - Bo Zhang
- State Key Laboratory of Chemical Resource Engineering, College of Life Science and Technology, Beijing University of Chemical Technology, Beijing, P. R. China
| | - Yuanqiang Li
- State Key Laboratory of Chemical Resource Engineering, College of Life Science and Technology, Beijing University of Chemical Technology, Beijing, P. R. China
| | - Qipeng Yuan
- State Key Laboratory of Chemical Resource Engineering, College of Life Science and Technology, Beijing University of Chemical Technology, Beijing, P. R. China.
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2
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Flockhart M, Nilsson LC, Tillqvist EN, Vinge F, Millbert F, Lännerström J, Nilsson PH, Samyn D, Apró W, Sundqvist ML, Larsen FJ. Glucosinolate-rich broccoli sprouts protect against oxidative stress and improve adaptations to intense exercise training. Redox Biol 2023; 67:102873. [PMID: 37688976 PMCID: PMC10493800 DOI: 10.1016/j.redox.2023.102873] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2023] [Revised: 09/01/2023] [Accepted: 09/01/2023] [Indexed: 09/11/2023] Open
Abstract
Oxidative stress plays a vital role for the adaptive responses to physical training. However, excessive oxidative stress can precipitate cellular damage, necessitating protective mechanisms to mitigate this effect. Glucosinolates, found predominantly in cruciferous vegetables, can be converted into isothiocyanates, known for their antioxidative properties. These compounds activate crucial antioxidant defence pathways and support mitochondrial function and protein integrity under oxidative stress, in both Nrf2-dependent and independent manners. We here administered glucosinolate-rich broccoli sprouts (GRS), in a randomized double-blinded cross-over fashion to 9 healthy subjects in combination with daily intense exercise training for 7 days. We found that exercise in combination with GRS significantly decreased the levels of carbonylated proteins in skeletal muscle and the release of myeloperoxidase into blood. Moreover, it lowered lactate accumulation during submaximal exercise, and attenuated the severe nocturnal hypoglycaemic episodes seen during the placebo condition. Furthermore, GRS in combination with exercise improved physical performance, which was unchanged in the placebo condition.
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Affiliation(s)
- M Flockhart
- Department of Physiology, Nutrition and Biomechanics, Åstrand Laboratory, The Swedish School of Sport and Health Sciences, Stockholm, Sweden.
| | - L C Nilsson
- Department of Physiology, Nutrition and Biomechanics, Åstrand Laboratory, The Swedish School of Sport and Health Sciences, Stockholm, Sweden
| | - E N Tillqvist
- Department of Physiology, Nutrition and Biomechanics, Åstrand Laboratory, The Swedish School of Sport and Health Sciences, Stockholm, Sweden
| | - F Vinge
- Department of Physiology, Nutrition and Biomechanics, Åstrand Laboratory, The Swedish School of Sport and Health Sciences, Stockholm, Sweden
| | - F Millbert
- Department of Physiology, Nutrition and Biomechanics, Åstrand Laboratory, The Swedish School of Sport and Health Sciences, Stockholm, Sweden
| | - J Lännerström
- Department of Physiology, Nutrition and Biomechanics, Åstrand Laboratory, The Swedish School of Sport and Health Sciences, Stockholm, Sweden
| | - P H Nilsson
- Linnaeus Centre for Biomaterials Chemistry, Linnaeus University, Kalmar, Sweden; Department of Chemistry and Biomedicine, Linnaeus University, Kalmar, Sweden
| | - D Samyn
- Department of Laboratory Medicine, Clinical Chemistry, Örebro University Hospital, Örebro, Sweden; School of Medicine, Faculty of Medicine, Örebro University, Örebro, Sweden
| | - W Apró
- Department of Physiology, Nutrition and Biomechanics, Åstrand Laboratory, The Swedish School of Sport and Health Sciences, Stockholm, Sweden
| | - M L Sundqvist
- Department of Physiology, Nutrition and Biomechanics, Åstrand Laboratory, The Swedish School of Sport and Health Sciences, Stockholm, Sweden
| | - F J Larsen
- Department of Physiology, Nutrition and Biomechanics, Åstrand Laboratory, The Swedish School of Sport and Health Sciences, Stockholm, Sweden.
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3
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Etoh K, Nakao M. A web-based integrative transcriptome analysis, RNAseqChef, uncovers cell/tissue type-dependent action of sulforaphane. J Biol Chem 2023:104810. [PMID: 37172729 DOI: 10.1016/j.jbc.2023.104810] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2023] [Revised: 04/28/2023] [Accepted: 05/02/2023] [Indexed: 05/15/2023] Open
Abstract
RNA sequencing (RNA-seq) is a powerful technique for understanding cellular state and dynamics. However, comprehensive transcriptomic characterization of multiple RNA-seq datasets is laborious without bioinformatics training and skills. To remove the barriers to sequence data analysis in the research community, we have developed "RNAseqChef" (RNA-seq data controller highlighting expression features), a web-based platform of systematic transcriptome analysis that can automatically detect, integrate, and visualize differentially expressed genes and their biological functions. To validate its versatile performance, we examined the pharmacological action of sulforaphane (SFN), a natural isothiocyanate, on various types of cells and mouse tissues using multiple datasets in vitro and in vivo. Notably, SFN treatment upregulated the ATF6-mediated unfolded protein response in the liver and the NRF2-mediated antioxidant response in the skeletal muscle of diet-induced obese mice. In contrast, the commonly downregulated pathways included collagen synthesis and circadian rhythms in the tissues tested. On the server of RNAseqChef, we simply evaluated and visualized all analyzing data and discovered the NRF2-independent action of SFN. Collectively, RNAseqChef provides an easy-to-use open resource that identifies context-dependent transcriptomic features and standardizes data assessment.
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Affiliation(s)
- Kan Etoh
- Department of Medical Cell Biology, Institute of Molecular Embryology and Genetics, Kumamoto University, Kumamoto, Japan
| | - Mitsuyoshi Nakao
- Department of Medical Cell Biology, Institute of Molecular Embryology and Genetics, Kumamoto University, Kumamoto, Japan.
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4
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Gasmi A, Gasmi Benahmed A, Shanaida M, Chirumbolo S, Menzel A, Anzar W, Arshad M, Cruz-Martins N, Lysiuk R, Beley N, Oliinyk P, Shanaida V, Denys A, Peana M, Bjørklund G. Anticancer activity of broccoli, its organosulfur and polyphenolic compounds. Crit Rev Food Sci Nutr 2023:1-19. [PMID: 37129118 DOI: 10.1080/10408398.2023.2195493] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/03/2023]
Abstract
The use of natural bioactive constituents from various food sources for anticancer purposes has become increasingly popular worldwide. Broccoli (Brassica oleracea var. italica) is on the top of the consumed vegetables by the masses. Its raw matrix contains a plethora of phytochemicals, such as glucosinolates and phenolic compounds, along with rich amounts of vitamins, and minerals. Consumption of broccoli-derived phytochemicals provides strong antioxidant effects, particularly due to its sulforaphane content, while modulating numerous molecules involved in cell cycle regulation, control of apoptosis, and tuning enzyme activity. Thus, the inclusion of broccoli in the daily diet lowers the susceptibility to developing cancers. Numerous studies have underlined the undisputable role of broccoli in the diet as a chemopreventive raw food, owing to the content in sulforaphane, an isothiocyanate produced as a result of hydrolysis of precursor glucosinolates called glucoraphanin. This review will provide evidence supporting the specific role of fresh florets and sprouts of broccoli and its key bioactive constituents in the prevention and treatment of different cancers; a number of studies carried out in the in vitro and in vivo conditions as well as clinical trials were analyzed.
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Affiliation(s)
- Amin Gasmi
- Société Francophone de Nutrithérapie et de Nutrigénétique Appliquée, Villeurbanne, France
- International Congress of Nutritional Sciences, Casablanca, Morocco
- Société Marocaine de Micronutrition et de Nutrigénétique Appliquée, Casablanca, Morocco
| | | | - Mariia Shanaida
- I. Horbachevsky Ternopil National Medical University, Ternopil, Ukraine
| | - Salvatore Chirumbolo
- Department of Neurosciences, Biomedicine and Movement Sciences, University of Verona, Verona, Italy
- CONEM Scientific Secretary, Verona, Italy
| | | | - Wajiha Anzar
- Dow University of Health Sciences, Karachi, Pakistan
| | - Mehreen Arshad
- National University of Sciences and Technology, Islamabad, Pakistan
| | - Natália Cruz-Martins
- Faculty of Medicine, University of Porto, Porto, Portugal
- Institute for Research and Innovation in Health (i3S), University of Porto, Porto, Portugal
- Institute of Research and Advanced Training in Health Sciences and Technologies (CESPU), Rua Central de Gandra, Gandra PRD, Portugal
- TOXRUN - Toxicology Research Unit, University Institute of Health Sciences, CESPU, CRL, Gandra, Portugal
| | - Roman Lysiuk
- Danylo Halytsky Lviv National Medical University, Lviv, Ukraine
- CONEM Ukraine Life Science Research Group, Danylo Halytsky Lviv National Medical University, Lviv, Ukraine
| | - Nataliya Beley
- I. Horbachevsky Ternopil National Medical University, Ternopil, Ukraine
| | - Petro Oliinyk
- Danylo Halytsky Lviv National Medical University, Lviv, Ukraine
- CONEM Ukraine Life Science Research Group, Danylo Halytsky Lviv National Medical University, Lviv, Ukraine
| | - Volodymyr Shanaida
- Design of Machine Tools, Instruments and Machines Department, Ternopil Ivan Puluj National Technical University, Ternopil, Ukraine
| | | | - Massimiliano Peana
- Department of Chemical, Physical, Mathematical and Natural Sciences, University of Sassari, Sassari, Italy
| | - Geir Bjørklund
- Council for Nutritional and Environmental Medicine (CONEM), Mo i Rana, Norway
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5
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Thomas SD, Jha NK, Ojha S, Sadek B. mTOR Signaling Disruption and Its Association with the Development of Autism Spectrum Disorder. Molecules 2023; 28:molecules28041889. [PMID: 36838876 PMCID: PMC9964164 DOI: 10.3390/molecules28041889] [Citation(s) in RCA: 14] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2022] [Revised: 01/31/2023] [Accepted: 02/04/2023] [Indexed: 02/19/2023] Open
Abstract
Autism spectrum disorder (ASD) is a complex neurodevelopmental disorder characterized by impairments in social interaction and communication along with repetitive stereotypic behaviors. Currently, there are no specific biomarkers for diagnostic screening or treatments available for autistic patients. Numerous genetic disorders are associated with high prevalence of ASD, including tuberous sclerosis complex, phosphatase and tensin homolog, and fragile X syndrome. Preclinical investigations in animal models of these diseases have revealed irregularities in the PI3K/Akt/mTOR signaling pathway as well as ASD-related behavioral defects. Reversal of the downstream molecular irregularities, associated with mTOR hyperactivation, improved the behavioral deficits observed in the preclinical investigations. Plant bioactive molecules have shown beneficial pre-clinical evidence in ASD treatment by modulating the PI3K/Akt/mTOR pathway. In this review, we summarize the involvement of the PI3K/Akt/mTOR pathway as well as the genetic alterations of the pathway components and its critical impact on the development of the autism spectrum disorder. Mutations in negative regulators of mTORC1, such as TSC1, TSC2, and PTEN, result in ASD-like phenotypes through the disruption of the mTORC1-mediated signaling. We further discuss the various naturally occurring phytoconstituents that have been identified to be bioactive and modulate the pathway to prevent its disruption and contribute to beneficial therapeutic effects in ASD.
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Affiliation(s)
- Shilu Deepa Thomas
- Department of Pharmacology and Therapeutics, College of Medicine and Health Sciences, United Arab Emirates University, Al Ain P.O. Box 15551, United Arab Emirates
- Zayed Bin Sultan Center for Health Sciences, United Arab Emirates University, Al Ain P.O. Box 15551, United Arab Emirates
| | - Niraj Kumar Jha
- Department of Biotechnology, School of Engineering and Technology (SET), Sharda University, Greater Noida 201310, India
- School of Bioengineering & Biosciences, Lovely Professional University, Phagwara 144411, India
- Department of Biotechnology, School of Applied & Life Sciences (SALS), Uttaranchal University, Dehradun 248007, India
| | - Shreesh Ojha
- Department of Pharmacology and Therapeutics, College of Medicine and Health Sciences, United Arab Emirates University, Al Ain P.O. Box 15551, United Arab Emirates
- Zayed Bin Sultan Center for Health Sciences, United Arab Emirates University, Al Ain P.O. Box 15551, United Arab Emirates
| | - Bassem Sadek
- Department of Pharmacology and Therapeutics, College of Medicine and Health Sciences, United Arab Emirates University, Al Ain P.O. Box 15551, United Arab Emirates
- Zayed Bin Sultan Center for Health Sciences, United Arab Emirates University, Al Ain P.O. Box 15551, United Arab Emirates
- Correspondence:
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6
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The Multiple Sclerosis Modulatory Potential of Natural Multi-Targeting Antioxidants. MOLECULES (BASEL, SWITZERLAND) 2022; 27:molecules27238402. [PMID: 36500494 PMCID: PMC9740750 DOI: 10.3390/molecules27238402] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 10/13/2022] [Revised: 11/25/2022] [Accepted: 11/29/2022] [Indexed: 12/05/2022]
Abstract
Multiple sclerosis (MS) is a complex neurodegenerative disease. Although its pathogenesis is rather vague in some aspects, it is well known to be an inflammatory process characterized by inflammatory cytokine release and oxidative burden, resulting in demyelination and reduced remyelination and axonal survival together with microglial activation. Antioxidant compounds are gaining interest towards the manipulation of MS, since they offer, in most of the cases, many benefits, due to their pleiotropical activity, that mainly derives from the oxidative stress decrease. This review analyzes research articles, of the last decade, which describe biological in vitro, in vivo and clinical evaluation of various categories of the most therapeutically applied natural antioxidant compounds, and some of their derivatives, with anti-MS activity. It also summarizes some of the main characteristics of MS and the role the reactive oxygen and nitrogen species may have in its progression, as well as their relation with the other mechanistic aspects of the disease, in order for the multi-targeting potential of those antioxidants to be defined and the source of origination of such activity explained. Antioxidant compounds with specific characteristics are expected to affect positively some aspects of the disease, and their potential may render them as effective candidates for neurological impairment reduction in combination with the MS treatment regimen. However, more studies are needed in order such antioxidants to be established as recommended treatment to MS patients.
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7
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Mak K, Shiming Z, Epemolu O, Dinkova‐Kostova AT, Wells G, Gazaryan IG, Sakirolla R, Mohd Z, Pichika MR. Synthesis and Anti-Inflammatory Activity of 2-Amino-4,5,6,7-tetrahydrobenzo[b]thiophene-Derived NRF2 Activators. Chemistry 2022; 11:e202200181. [PMID: 36284193 PMCID: PMC9596610 DOI: 10.1002/open.202200181] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2022] [Revised: 09/11/2022] [Indexed: 11/28/2022]
Abstract
This is the first study investigating the nuclear factor (erythroid‐derived 2)‐like 2 (NRF2) activity of compounds containing a new scaffold, tetrahydrobenzo[b]thiophene. Eighteen compounds were synthesised and confirmed their NRF2 activation through NQO1 enzymatic activity and mRNA expression of NQO1 and HO‐1 in Hepa‐1c1c7 cells. The compounds disrupted the interaction between Kelch‐like ECH‐associated protein 1 (KEAP1) and NRF2 via interfering with the KEAP1’s Kelch domain. The compounds exhibited anti‐inflammatory activity in Escherichia coli Lipopolysaccharide (LPSEc)‐stimulated RAW 264.7 cells. The anti‐inflammatory activity of the compounds was associated with their ability to activate NRF2. The compounds reversed the elevated levels of pro‐inflammatory cytokines (IL‐1β, IL‐6, TNF‐α, and IFN‐γ) and inflammatory mediators (PGE2, COX‐2, and NF‐κB). The compounds were metabolically stable in human, rat, and mouse liver microsomes and showed optimum half‐life (T1/2) and intrinsic clearance (Clint). The binding mode of the compounds and physicochemical properties were predicted via in silico studies.
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Affiliation(s)
- Kit‐Kay Mak
- Pharmaceutical Chemistry DepartmentInternational Medical University126 Jalan Jalil Perkasa 19, Bukit Jalil57000Kuala LumpurMalaysia,Centre of Excellence for Bioactive Molecules and Drug DeliveryInstitute for ResearchDevelopment, and Innovation (IRDI)International Medical University126 Jalan Jalil Perkasa 19 Bukit Jalil57000Kuala LumpurMalaysia,School of Postgraduate StudiesInternational Medical University126 Jalan Jalil Perkasa 19 Bukit Jalil57000Kuala LumpurMalaysia
| | - Zhang Shiming
- School of Postgraduate StudiesInternational Medical University126 Jalan Jalil Perkasa 19 Bukit Jalil57000Kuala LumpurMalaysia
| | - Ola Epemolu
- Principal research scientist- in vitro/in vivo DMPKCharles River Laboratories Edinburgh LtdTranent, East LothianScotlandUK
| | - Albena T. Dinkova‐Kostova
- School of MedicineJacqui Wood Cancer CentreUniversity of DundeeDundeeScotlandUK,Departments of Medicine and Pharmacology and Molecular SciencesJohns Hopkins UniversityBaltimore, MAUSA
| | - Geoffrey Wells
- UCL School of PharmacyUniversity College LondonLondonWC1N 1AXUK
| | - Irina G. Gazaryan
- Faculty of Biology and BiotechnologyNational Research University Higher School of EconomicsMoscowRussia,Department of Chemical EnzymologyM.V. Lomonosov Moscow State UniversityMoscowRussia,Department of Chemistry and Physical SciencesPace UniversityPleasantville, NYUSA
| | | | - Zulkefeli Mohd
- Pharmaceutical Chemistry DepartmentInternational Medical University126 Jalan Jalil Perkasa 19, Bukit Jalil57000Kuala LumpurMalaysia,Centre of Excellence for Bioactive Molecules and Drug DeliveryInstitute for ResearchDevelopment, and Innovation (IRDI)International Medical University126 Jalan Jalil Perkasa 19 Bukit Jalil57000Kuala LumpurMalaysia
| | - Mallikarjuna Rao Pichika
- Pharmaceutical Chemistry DepartmentInternational Medical University126 Jalan Jalil Perkasa 19, Bukit Jalil57000Kuala LumpurMalaysia,Centre of Excellence for Bioactive Molecules and Drug DeliveryInstitute for ResearchDevelopment, and Innovation (IRDI)International Medical University126 Jalan Jalil Perkasa 19 Bukit Jalil57000Kuala LumpurMalaysia
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8
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Buttari B, Arese M, Oberley-Deegan RE, Saso L, Chatterjee A. NRF2: A crucial regulator for mitochondrial metabolic shift and prostate cancer progression. Front Physiol 2022; 13:989793. [PMID: 36213236 PMCID: PMC9540504 DOI: 10.3389/fphys.2022.989793] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2022] [Accepted: 08/31/2022] [Indexed: 12/05/2022] Open
Abstract
Metabolic alterations are a common survival mechanism for prostate cancer progression and therapy resistance. Oxidative stress in the cellular and tumor microenvironment dictates metabolic switching in the cancer cells to adopt, prosper and escape therapeutic stress. Therefore, regulation of oxidative stress in tumor cells and in the tumor-microenvironment may enhance the action of conventional anticancer therapies. NRF2 is the master regulator for oxidative stress management. However, the overall oxidative stress varies with PCa clinical stage, metabolic state and therapy used for the cancer. In agreement, the blanket use of NRF2 inducers or inhibitors along with anticancer therapies cause adverse effects in some preclinical cancer models. In this review, we have summarized the levels of oxidative stress, metabolic preferences and NRF2 activity in the different stages of prostate cancer. We also propose condition specific ways to use NRF2 inducers or inhibitors along with conventional prostate cancer therapies. The significance of this review is not only to provide a detailed understanding of the mechanism of action of NRF2 to regulate oxidative stress-mediated metabolic switching by prostate cancer cells to escape the radiation, chemo, or hormonal therapies, and to grow aggressively, but also to provide a potential therapeutic method to control aggressive prostate cancer growth by stage specific proper use of NRF2 regulators.
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Affiliation(s)
- Brigitta Buttari
- Department of Cardiovascular and Endocrine-metabolic Diseases and Aging, Istituto Superiore di Sanità, Rome, Italy
| | - Marzia Arese
- Department of Biochemical Sciences “A. Rossi Fanelli”, Sapienza University of Rome, Rome, Italy
| | - Rebecca E. Oberley-Deegan
- Department of Biochemistry and Molecular Biology, University of Nebraska Medical Center, Omaha, NE, United States
| | - Luciano Saso
- Department of Physiology and Pharmacology ‘‘Vittorio Erspamer”, Sapienza University of Rome, Rome, Italy
| | - Arpita Chatterjee
- Department of Biochemistry and Molecular Biology, University of Nebraska Medical Center, Omaha, NE, United States
- *Correspondence: Arpita Chatterjee,
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9
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Kapoor S, Kala D, Svoboda J, Daněk J, Faridová A, Brnoliaková Z, Mikulecká A, Folbergrová J, Otáhal J. The effect of sulforaphane on perinatal hypoxic-ischemic brain injury in rats. Physiol Res 2022; 71:401-411. [PMID: 35616041 DOI: 10.33549/physiolres.934878] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022] Open
Abstract
Perinatal hypoxic-ischemic insult (HII) is one of the main devastating causes of morbidity and mortality in newborns. HII induces brain injury which evolves to neurological sequelae later in life. Hypothermia is the only therapeutic approach available capable of diminishing brain impairment after HII. Finding a novel therapeutic method to reduce the severity of brain injury and its consequences is critical in neonatology. The present paper aimed to evaluate the effect of sulforaphane (SFN) pre-treatment on glucose metabolism, neurodegeneration, and functional outcome at the acute, sub-acute, and sub-chronic time intervals in the experimental model of perinatal hypoxic-ischemic insult in rats. To estimate the effect of SFN on brain glucose uptake we have performed 18F-deoxyglucose (FDG) microCT/PET. The activity of FDG was determined in the hippocampus and sensorimotor cortex. Neurodegeneration was assessed by histological analysis of Nissl-stained brain sections. To investigate functional outcomes a battery of behavioral tests was employed. We have shown that although SFN possesses a protective effect on glucose uptake in the ischemic hippocampus 24 h and 1 week after HII, no effect has been observed in the motor cortex. We have further shown that the ischemic hippocampal formation tends to be thinner in HIE and SFN treatment tends to reverse this pattern. We have observed subtle chronic movement deficit after HII detected by ladder rung walking test with no protective effect of SFN. SFN should be thus considered as a potent neuroprotective drug with the capability to interfere with pathophysiological processes triggered by perinatal hypoxic-ischemic insult.
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Affiliation(s)
- S Kapoor
- Centre of Experimental Medicine, Institute of Experimental Pharmacology and Toxicology, Slovak Academy of Sciences, Bratislava, Slovak Republic; Laboratory of Developmental Epileptology, Institute of Physiology of the Czech Academy of Sciences, Czech Republic.
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10
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Daněk J, Danačíková Š, Kala D, Svoboda J, Kapoor S, Pošusta A, Folbergrová J, Tauchmannová K, Mráček T, Otáhal J. Sulforaphane Ameliorates Metabolic Changes Associated With Status Epilepticus in Immature Rats. Front Cell Neurosci 2022; 16:855161. [PMID: 35370554 PMCID: PMC8965559 DOI: 10.3389/fncel.2022.855161] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2022] [Accepted: 02/16/2022] [Indexed: 11/24/2022] Open
Abstract
Status epilepticus (SE) is a common paediatric emergency with the highest incidence in the neonatal period and is a well-known epileptogenic insult. As previously established in various experimental and human studies, SE induces long-term alterations to brain metabolism, alterations that directly contribute to the development of epilepsy. To influence these changes, organic isothiocyanate compound sulforaphane (SFN) has been used in the present study for its known effect of enhancing antioxidative, cytoprotective, and metabolic cellular properties via the Nrf2 pathway. We have explored the effect of SFN in a model of acquired epilepsy induced by Li-Cl pilocarpine in immature rats (12 days old). Energy metabolites PCr, ATP, glucose, glycogen, and lactate were determined by enzymatic fluorimetric methods during the acute phase of SE. Protein expression was evaluated by Western blot (WB) analysis. Neuronal death was scored on the FluoroJadeB stained brain sections harvested 24 h after SE. To assess the effect of SFN on glucose metabolism we have performed a series of 18F-DG μCT/PET recordings 1 h, 1 day, and 3 weeks after the induction of SE. Responses of cerebral blood flow (CBF) to electrical stimulation and their influence by SFN were evaluated by laser Doppler flowmetry (LDF). We have demonstrated that the Nrf2 pathway is upregulated in the CNS of immature rats after SFN treatment. In the animals that had undergone SE, SFN was responsible for lowering glucose uptake in most regions 1 h after the induction of SE. Moreover, SFN partially reversed hypometabolism observed after 24 h and achieved full reversal at approximately 3 weeks after SE. Since no difference in cell death was observed in SFN treated group, these changes cannot be attributed to differences in neurodegeneration. SFN per se did not affect the glucose uptake at any given time point suggesting that SFN improves endogenous CNS ability to adapt to the epileptogenic insult. Furthermore, we had discovered that SFN improves blood flow and accelerates CBF response to electrical stimulation. Our findings suggest that SFN improves metabolic changes induced by SE which have been identified during epileptogenesis in various animal models of acquired epilepsy.
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Affiliation(s)
- Jan Daněk
- Institute of Physiology, Czech Academy of Sciences, Prague, Czechia
| | - Šárka Danačíková
- Institute of Physiology, Czech Academy of Sciences, Prague, Czechia
| | - David Kala
- Institute of Physiology, Czech Academy of Sciences, Prague, Czechia
| | - Jan Svoboda
- Institute of Physiology, Czech Academy of Sciences, Prague, Czechia
- Department of Pathophysiology, Second Faculty of Medicine, Charles University, Prague, Czechia
| | - Sonam Kapoor
- Institute of Physiology, Czech Academy of Sciences, Prague, Czechia
| | - Antonín Pošusta
- Institute of Physiology, Czech Academy of Sciences, Prague, Czechia
| | | | | | - Tomáš Mráček
- Institute of Physiology, Czech Academy of Sciences, Prague, Czechia
| | - Jakub Otáhal
- Institute of Physiology, Czech Academy of Sciences, Prague, Czechia
- Department of Pathophysiology, Second Faculty of Medicine, Charles University, Prague, Czechia
- *Correspondence: Jakub Otáhal,
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11
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Çakır I, Lining Pan P, Hadley CK, El-Gamal A, Fadel A, Elsayegh D, Mohamed O, Rizk NM, Ghamari-Langroudi M. Sulforaphane reduces obesity by reversing leptin resistance. eLife 2022; 11:67368. [PMID: 35323110 PMCID: PMC8947770 DOI: 10.7554/elife.67368] [Citation(s) in RCA: 21] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2021] [Accepted: 01/21/2022] [Indexed: 12/11/2022] Open
Abstract
The ascending prevalence of obesity in recent decades is commonly associated with soaring morbidity and mortality rates, resulting in increased health-care costs and decreased quality of life. A systemic state of stress characterized by low-grade inflammation and pathological formation of reactive oxygen species (ROS) usually manifests in obesity. The transcription factor nuclear factor erythroid-derived 2-like 2 (NRF2) is the master regulator of the redox homeostasis and plays a critical role in the resolution of inflammation. Here, we show that the natural isothiocyanate and potent NRF2 activator sulforaphane reverses diet-induced obesity through a predominantly, but not exclusively, NRF2-dependent mechanism that requires a functional leptin receptor signaling and hyperleptinemia. Sulforaphane does not reduce the body weight or food intake of lean mice but induces an anorectic response when coadministered with exogenous leptin. Leptin-deficient Lepob/ob mice and leptin receptor mutant Leprdb/db mice display resistance to the weight-reducing effect of sulforaphane, supporting the conclusion that the antiobesity effect of sulforaphane requires functional leptin receptor signaling. Furthermore, our results suggest the skeletal muscle as the most notable site of action of sulforaphane whose peripheral NRF2 action signals to alleviate leptin resistance. Transcriptional profiling of six major metabolically relevant tissues highlights that sulforaphane suppresses fatty acid synthesis while promoting ribosome biogenesis, reducing ROS accumulation, and resolving inflammation, therefore representing a unique transcriptional program that leads to protection from obesity. Our findings argue for clinical evaluation of sulforaphane for weight loss and obesity-associated metabolic disorders.
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Affiliation(s)
- Işın Çakır
- Life Sciences Institute, University of Michigan
- Department of Molecular Physiology & Biophysics, Vanderbilt University
| | | | - Colleen K Hadley
- Life Sciences Institute, University of Michigan
- College of Literature, Science, and the Arts, University of Michigan
| | - Abdulrahman El-Gamal
- Biomedical Sciences Department, College of Health Sciences, Qu- Health, Qatar University
| | - Amina Fadel
- Biomedical Research Center, Qatar University
| | | | | | - Nasser M Rizk
- Biomedical Sciences Department, College of Health Sciences, Qu- Health, Qatar University
- Biomedical Research Center, Qatar University
| | - Masoud Ghamari-Langroudi
- Department of Molecular Physiology & Biophysics, Vanderbilt University
- Warren Center for Neuroscience Drug Discovery, Department of Pharmacology, Vanderbilt University
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12
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Composition of the Gut Microbiome Influences Production of Sulforaphane-Nitrile and Iberin-Nitrile from Glucosinolates in Broccoli Sprouts. Nutrients 2021; 13:nu13093013. [PMID: 34578891 PMCID: PMC8468500 DOI: 10.3390/nu13093013] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2021] [Revised: 08/24/2021] [Accepted: 08/24/2021] [Indexed: 12/17/2022] Open
Abstract
Isothiocyanates, such as sulforaphane and iberin, derived from glucosinolates (GLS) in cruciferous vegetables, are known to prevent and suppress cancer development. GLS can also be converted by bacteria to biologically inert nitriles, such as sulforaphane-nitrile (SFN-NIT) and iberin-nitrile (IBN-NIT), but the role of the gut microbiome in this process is relatively undescribed and SFN-NIT excretion in humans is unknown. An ex vivo fecal incubation model with in vitro digested broccoli sprouts and 16S sequencing was utilized to explore the role of the gut microbiome in SFN- and IBN-NIT production. SFN-NIT excretion was measured among human subjects following broccoli sprout consumption. The fecal culture model showed high inter-individual variability in nitrile production and identified two sub-populations of microbial communities among the fecal cultures, which coincided with a differing abundance of nitriles. The Clostridiaceae family was associated with high levels, while individuals with a low abundance of nitriles were more enriched with taxa from the Enterobacteriaceae family. High levels of inter-individual variation in urine SFN-NIT levels were also observed, with peak excretion of SFN-NIT at 24 h post broccoli sprout consumption. These results suggest that nitrile production from broccoli, as opposed to isothiocyanates, could be influenced by gut microbiome composition, potentially lowering efficacy of cruciferous vegetable interventions.
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13
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Mokhtari RB, Qorri B, Baluch N, Sparaneo A, Fabrizio FP, Muscarella LA, Tyker A, Kumar S, Cheng HLM, Szewczuk MR, Das B, Yeger H. Next-generation multimodality of nutrigenomic cancer therapy: sulforaphane in combination with acetazolamide actively target bronchial carcinoid cancer in disabling the PI3K/Akt/mTOR survival pathway and inducing apoptosis. Oncotarget 2021; 12:1470-1489. [PMID: 34316328 PMCID: PMC8310668 DOI: 10.18632/oncotarget.28011] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2021] [Accepted: 06/14/2021] [Indexed: 11/25/2022] Open
Abstract
OBJECTIVE Aberrations in the PI3K/AKT/mTOR survival pathway in many cancers are the most common genomic abnormalities. The phytochemical and bioactive agent sulforaphane (SFN) has nutrigenomic potential in activating the expression of several cellular protective genes via the transcription factor nuclear factor erythroid 2-related factor 2 (Nrf2). Nrf2 is primarily related to mechanisms of endogenous cellular defense and survival. The efficacy of SFN in combination with acetazolamide (AZ) was investigated in reducing typical H727 and atypical H720 BC survival, migration potential, and apoptosis in vitro and in vivo preclinical xenograft tissues. MATERIALS AND METHODS Microscopic imaging, immunocytochemistry, wound healing assay, caspase-cleaved cytokeratin 18 (M30, CCK18) CytoDeath ELISA assay, immunofluorescence labeling assays for apoptosis, hypoxia, Western Blotting, Tunnel assay, measurement of 5-HT secretion by carbon fiber amperometry assay, quantitative methylation-specific PCR (qMSP), morphologic changes, cell viability, apoptosis activity and the expression levels of phospho-Akt1, Akt1, HIF-1α, PI3K, p21, CAIX, 5-HT, phospho-mTOR, and mTOR in xenografts derived from typical H727 and atypical H720 BC cell lines. RESULTS Combining AZ+SFN reduced tumor cell survival compared to each agent alone, both in vitro and in vivo xenograft tissues. AZ+SFN targeted multiple pathways involved in cell cycle, serotonin secretion, survival, and growth pathways, highlighting its therapeutic approach. Both H727 and H720 cells were associated with induction of apoptosis, upregulation of the p21 cell cycle inhibitor, and downregulation of the PI3K/Akt/mTOR pathway, suggesting that the PI3K/Akt/mTOR pathway is a primary target of the AZ+SFN combination therapy. CONCLUSIONS Combining SFN+AZ significantly inhibits the PI3K/Akt/mTOR pathway and significantly reducing 5-HT secretion in carcinoid syndrome.
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Affiliation(s)
- Reza Bayat Mokhtari
- Program in Developmental and Stem Cell Biology, The Hospital for Sick Children, Toronto, Ontario, Canada.,Department of Experimental Therapeutics, Thoreau Laboratory for Global Health, M2D2, University of Massachusetts, Lowell, MA, USA.,Department of Biomedical and Molecular Sciences, Queen's University, Kingston, Ontario, Canada
| | - Bessi Qorri
- Department of Biomedical and Molecular Sciences, Queen's University, Kingston, Ontario, Canada
| | - Narges Baluch
- Department of Immunology and Allergy, The Hospital for Sick Children, Toronto, Ontario, Canada
| | - Angelo Sparaneo
- Laboratory of Oncology, IRCCS Casa Sollievo della Sofferenza, San Giovanni Rotondo FG, Italy
| | - Federico Pio Fabrizio
- Laboratory of Oncology, IRCCS Casa Sollievo della Sofferenza, San Giovanni Rotondo FG, Italy
| | - Lucia Anna Muscarella
- Laboratory of Oncology, IRCCS Casa Sollievo della Sofferenza, San Giovanni Rotondo FG, Italy
| | - Albina Tyker
- Department of Internal Medicine, University of Chicago, Chicago, IL, USA
| | - Sushil Kumar
- Q.P.S. Holdings LLC, Pencader Corporate Center, Newark, DE, USA
| | - Hai-Ling Margaret Cheng
- Institute of Biomedical Engineering, The Edward S. Rogers Sr. Department of Electrical & Computer Engineering, University of Toronto, Toronto, Canada
| | - Myron R Szewczuk
- Department of Biomedical and Molecular Sciences, Queen's University, Kingston, Ontario, Canada
| | - Bikul Das
- Department of Experimental Therapeutics, Thoreau Laboratory for Global Health, M2D2, University of Massachusetts, Lowell, MA, USA.,Department of Cancer and Stem Cell Biology, KaviKrishna Laboratory, Guwahati Biotech Park, Indian Institute of Technology, Guwahati, Assam, India.,Department of Immunology and Infectious Diseases, Forsyth Institute, Cambridge, MA, USA
| | - Herman Yeger
- Program in Developmental and Stem Cell Biology, The Hospital for Sick Children, Toronto, Ontario, Canada
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14
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Liu W, Wang S, Lin B, Zhang W, Ji G. Applications of CRISPR/Cas9 in the research of malignant musculoskeletal tumors. BMC Musculoskelet Disord 2021; 22:149. [PMID: 33546657 PMCID: PMC7866880 DOI: 10.1186/s12891-021-04020-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/27/2020] [Accepted: 01/26/2021] [Indexed: 12/05/2022] Open
Abstract
Background Malignant tumors of the musculoskeletal system, especially osteosarcoma, Ewing sarcoma and rhabdomyosarcoma, pose a major threat to the lives and health of adolescents and children. Current treatments for musculoskeletal tumors mainly include surgery, chemotherapy, and radiotherapy. The problems of chemotherapy resistance, poor long-term outcome of radiotherapy, and the inherent toxicity and side effects of chemical drugs make it extremely urgent to seek new treatment strategies. Main text As a potent gene editing tool, the rapid development of CRISPR/Cas9 technology in recent years has prompted scientists to apply it to the study of musculoskeletal tumors. This review summarizes the application of CRISPR/Cas9 technology for the treatment of malignant musculoskeletal tumors, focusing on its essential role in the field of basic research. Conclusion CRISPR, has demonstrated strong efficacy in targeting tumor-related genes, and its future application in the clinical treatment of musculoskeletal tumors is promising.
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Affiliation(s)
- Wei Liu
- Department of Orthopaedics, Xiang'an Hospital, School of Medicine, Xiamen University, No. 2000 East Xiang'an Road, Xiang'an District, Xiamen, 361102, China
| | - Shubin Wang
- Department of Orthopaedics, Xiang'an Hospital, School of Medicine, Xiamen University, No. 2000 East Xiang'an Road, Xiang'an District, Xiamen, 361102, China
| | - Binhui Lin
- Department of Orthopaedics, Xiang'an Hospital, School of Medicine, Xiamen University, No. 2000 East Xiang'an Road, Xiang'an District, Xiamen, 361102, China
| | - Wei Zhang
- Department of Obstetrics and Gynecology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430022, China
| | - Guangrong Ji
- Department of Orthopaedics, Xiang'an Hospital, School of Medicine, Xiamen University, No. 2000 East Xiang'an Road, Xiang'an District, Xiamen, 361102, China.
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15
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Bousquet J, Cristol JP, Czarlewski W, Anto JM, Martineau A, Haahtela T, Fonseca SC, Iaccarino G, Blain H, Fiocchi A, Canonica GW, Fonseca JA, Vidal A, Choi HJ, Kim HJ, Le Moing V, Reynes J, Sheikh A, Akdis CA, Zuberbier T. Nrf2-interacting nutrients and COVID-19: time for research to develop adaptation strategies. Clin Transl Allergy 2020; 10:58. [PMID: 33292691 PMCID: PMC7711617 DOI: 10.1186/s13601-020-00362-7] [Citation(s) in RCA: 45] [Impact Index Per Article: 11.3] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2020] [Accepted: 11/12/2020] [Indexed: 02/07/2023] Open
Abstract
There are large between- and within-country variations in COVID-19 death rates. Some very low death rate settings such as Eastern Asia, Central Europe, the Balkans and Africa have a common feature of eating large quantities of fermented foods whose intake is associated with the activation of the Nrf2 (Nuclear factor (erythroid-derived 2)-like 2) anti-oxidant transcription factor. There are many Nrf2-interacting nutrients (berberine, curcumin, epigallocatechin gallate, genistein, quercetin, resveratrol, sulforaphane) that all act similarly to reduce insulin resistance, endothelial damage, lung injury and cytokine storm. They also act on the same mechanisms (mTOR: Mammalian target of rapamycin, PPARγ:Peroxisome proliferator-activated receptor, NFκB: Nuclear factor kappa B, ERK: Extracellular signal-regulated kinases and eIF2α:Elongation initiation factor 2α). They may as a result be important in mitigating the severity of COVID-19, acting through the endoplasmic reticulum stress or ACE-Angiotensin-II-AT1R axis (AT1R) pathway. Many Nrf2-interacting nutrients are also interacting with TRPA1 and/or TRPV1. Interestingly, geographical areas with very low COVID-19 mortality are those with the lowest prevalence of obesity (Sub-Saharan Africa and Asia). It is tempting to propose that Nrf2-interacting foods and nutrients can re-balance insulin resistance and have a significant effect on COVID-19 severity. It is therefore possible that the intake of these foods may restore an optimal natural balance for the Nrf2 pathway and may be of interest in the mitigation of COVID-19 severity.
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Affiliation(s)
- Jean Bousquet
- Department of Dermatology and Allergy, Charité, Universitätsmedizin Berlin, Humboldt-Universität Zu Berlin, Berlin Institute of Health, Comprehensive Allergy Center, Berlin, Germany. .,University Hospital Montpellier, 273 avenue d'Occitanie, 34090, Montpellier, France. .,MACVIA-France, Montpellier, France.
| | - Jean-Paul Cristol
- Laboratoire de Biochimie et Hormonologie, PhyMedExp, Université de Montpellier, INSERM, CNRS, CHU, Montpellier, France
| | | | - Josep M Anto
- IMIM (Hospital del Mar Research Institute), Barcelona, Spain.,Universitat Pompeu Fabra (UPF), Barcelona, Spain.,CIBER Epidemiología y Salud Pública (CIBERESP), Barcelona, Spain.,ISGlobAL, Barcelona, Centre for Research in Environmental Epidemiology (CREAL), Barcelona, Spain
| | - Adrian Martineau
- Institute for Population Health Sciences, Barts and The London School of Medicine and Dentistry, Queen Mary University of London, London, UK
| | - Tari Haahtela
- Skin and Allergy Hospital, Helsinki University Hospital, and University of Helsinki, Helsinki, Finland
| | - Susana C Fonseca
- GreenUPorto - Sustainable Agrifood Production Research Centre, DGAOT, Faculty of Sciences, University of Porto, Campus de Vairão, Vila do Conde, Portugal
| | - Guido Iaccarino
- Department of Advanced Biomedical Sciences, Federico II University, Napoli, Italy
| | - Hubert Blain
- Department of Geriatrics, Montpellier University Hospital, Montpellier, France
| | - Alessandro Fiocchi
- Division of Allergy, Department of Pediatric Medicine, The Bambino Gesu Children's Research Hospital Holy See, Rome, Italy
| | - G Walter Canonica
- Personalized Medicine Asthma and Allergy Clinic-Humanitas University & Research Hospital, IRCCS, Milano, Italy
| | - Joao A Fonseca
- CINTESIS, Center for Research in Health Technology and Information Systems, Faculdade de Medicina da Universidade do Porto; and Medida,, Lda Porto, Porto, Portugal
| | - Alain Vidal
- World Business Council for Sustainable Development (WBCSD) Maison de la Paix, Geneva, Switzerland.,AgroParisTech-Paris Institute of Technology for Life, Food and Environmental Sciences, Paris, France
| | - Hak-Jong Choi
- Microbiology and Functionality Research Group, Research and Development Division, World Institute of Kimchi, Gwangju, Korea
| | - Hyun Ju Kim
- SME Service Department, Strategy and Planning Division, World Institute of Kimchi, Gwangju, Korea
| | | | - Jacques Reynes
- Maladies Infectieuses et Tropicales, CHU, Montpellier, France
| | - Aziz Sheikh
- The Usher Institute of Population Health Sciences and Informatics, The University of Edinburgh, Edinburgh, UK
| | - Cezmi A Akdis
- Swiss Institute of Allergy and Asthma Research (SIAF), University of Zurich, Davos, Switzerland
| | - Torsten Zuberbier
- Department of Dermatology and Allergy, Charité, Universitätsmedizin Berlin, Humboldt-Universität Zu Berlin, Berlin Institute of Health, Comprehensive Allergy Center, Berlin, Germany
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16
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Chen Y, Zhou X. Research progress of mTOR inhibitors. Eur J Med Chem 2020; 208:112820. [PMID: 32966896 DOI: 10.1016/j.ejmech.2020.112820] [Citation(s) in RCA: 105] [Impact Index Per Article: 26.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2020] [Revised: 08/16/2020] [Accepted: 09/03/2020] [Indexed: 12/25/2022]
Abstract
Mammalian target of rapamycin (mTOR) is a highly conserved Serine/Threonine (Ser/Thr) protein kinase, which belongs to phosphatidylinositol-3-kinase-related kinase (PIKK) protein family. mTOR exists as two types of protein complex: mTORC1 and mTORC2, which act as central controller regulating processes of cell metabolism, growth, proliferation, survival and autophagy. The mTOR inhibitors block mTOR signaling pathway, producing anti-inflammatory, anti-proliferative, autophagy and apoptosis induction effects, thus mTOR inhibitors are mainly used in cancer therapy. At present, mTOR inhibitors are divided into four categories: Antibiotic allosteric mTOR inhibitors (first generation), ATP-competitive mTOR inhibitors (second generation), mTOR/PI3K dual inhibitors (second generation) and other new mTOR inhibitors (third generation). In this article, these four categories of mTOR inhibitors and their structures, properties and some clinical researches will be introduced. Among them, we focus on the structure of mTOR inhibitors and try to analyze the structure-activity relationship. mTOR inhibitors are classified according to their chemical structure and their contents are introduced systematically. Moreover, some natural products that have direct or indirect mTOR inhibitory activities are introduced together. In this article, we analyzed the target, binding mode and structure-activity relationship of each generation of mTOR inhibitors and proposed two hypothetic scaffolds (the inverted-Y-shape scaffold and the C-shape scaffold) for the second generation of mTOR inhibitors. These findings may provide some help or reference for drug designing, drug modification or the future development of mTOR inhibitor.
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Affiliation(s)
- Yifan Chen
- School of Pharmaceutical Sciences, Jilin University, Changchun, 130021, China
| | - Xiaoping Zhou
- School of Pharmaceutical Sciences, Jilin University, Changchun, 130021, China.
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17
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Liu J, Chandaka GK, Zhang R, Parfenova H. Acute antioxidant and cytoprotective effects of sulforaphane in brain endothelial cells and astrocytes during inflammation and excitotoxicity. Pharmacol Res Perspect 2020; 8:e00630. [PMID: 32715644 PMCID: PMC7383090 DOI: 10.1002/prp2.630] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2020] [Revised: 06/29/2020] [Accepted: 06/30/2020] [Indexed: 01/01/2023] Open
Abstract
Sulforaphane (SFN), a bioactive phytochemical isothiocyanate, has a wide spectrum of cytoprotective effects that involve induction of antioxidant genes. Nongenomic antioxidant effects of SFN have not been investigated. Brain oxidative stress during inflammation and excitotoxicity leads to neurovascular injury. We tested the hypothesis that SNF exhibits acute antioxidant effects and prevents neurovascular injury during oxidative stress. In primary cultures of cerebral microvascular endothelial cells (CMVEC) and cortical astrocytes from the newborn pig brain, a pro-inflammatory cytokine TNF-α and an excitotoxic glutamate elevate reactive oxygen species (ROS) and cause cell death by apoptosis. Nox4 NADPH oxidase is the main Nox isoform in CMVEC and cortical astrocytes that is acutely activated by TNF-α and glutamate leading to ROS-mediated cell death by apoptosis. The Nox4 inhibitor GKT137831 blocked NADPH oxidase activity and overall ROS elevation, and prevented apoptosis of CMVEC and astrocytes exposed to TNF-α and glutamate, supporting the leading role of Nox4 in the neurovascular injury. Synthetic SFN (10-11 -10-6 mol/L) inhibited NADPH oxidase activity and reduced overall ROS production in CMVEC and astrocytes within 1-hour exposure to TNF-α and glutamate. Furthermore, in the presence of SFN, the ability of TNF-α and glutamate to produce apoptosis in CMVEC and cortical astrocytes was completely prevented. Overall, SFN at low concentrations exhibits antioxidant and antiapoptotic effects in cerebral endothelial cells and cortical astrocytes via a via a nongenomic mechanism that involves inhibition of Nox4 NADPH oxidase activity. SFN may prevent cerebrovascular injury during brain oxidative stress caused by inflammation and glutamate excitotoxicity.
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Affiliation(s)
- Jianxiong Liu
- Department of PhysiologyUniversity of Tennessee Health Science CenterMemphisTNUSA
| | - Giri K. Chandaka
- Department of PhysiologyUniversity of Tennessee Health Science CenterMemphisTNUSA
| | - Rong Zhang
- Department of PhysiologyUniversity of Tennessee Health Science CenterMemphisTNUSA
| | - Helena Parfenova
- Department of PhysiologyUniversity of Tennessee Health Science CenterMemphisTNUSA
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