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Zhao X, Xu Q, Wang Q, Liang X, Wang J, Jin H, Man Y, Guo D, Gao F, Tang X. Induced Self-Assembly of Vitamin E-Spermine/siRNA Nanocomplexes via Spermine/Helix Groove-Specific Interaction for Efficient siRNA Delivery and Antitumor Therapy. Adv Healthc Mater 2024; 13:e2303186. [PMID: 38234201 DOI: 10.1002/adhm.202303186] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2023] [Revised: 12/27/2023] [Indexed: 01/19/2024]
Abstract
Gene therapy has been one of potential strategies for the treatment of different diseases, where efficient and safe gene delivery systems are also extremely in need. Current lipid nanoparticles (LNP) technology highly depends on the packing and condensation of nucleic acids with amine moieties. Here, an attempt to covalently link two natural compounds, spermine and vitamin E, is made to develop self-assembled nucleic acid delivery systems. Among them, the spermine moieties specifically interact with the major groove of siRNA helix through salt bridge interaction, while vitamin E moieties are located around siRNA duplex. Such amphiphilic vitamin E-spermine/siRNA complexes can further self-assemble into nanocomplexes like multiblade wheels. Further studies indicate that these siRNA nanocomplexes with the neutrally charged surface of vitamin E can enter cells via caveolin/lipid raft mediated endocytosis pathway and bypass lysosome trapping. With these self-assembled delivery systems, efficient siRNA delivery is successfully achieved for Eg5 and Survivin gene silencing as well as DNA plasmid delivery. Further in vivo study indicates that VE-Su-Sper/DSPE-PEG2000/siSurvivin self-assembled nanocomplexes can accumulate in cancer cells and gradually release siRNA in tumor tissues and show significant antitumor effect in vivo. The self-assembled delivery system provides a novel strategy for highly efficient siRNA delivery.
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Affiliation(s)
- Xiaoran Zhao
- State Key Laboratory of Natural and Biomimetic Drugs and Chemical Biology Center, School of Pharmaceutical Sciences, Peking University, NO. 38, Xueyuan Rd., Beijing, 100191, China
| | - Qi Xu
- State Key Laboratory of Natural and Biomimetic Drugs and Chemical Biology Center, School of Pharmaceutical Sciences, Peking University, NO. 38, Xueyuan Rd., Beijing, 100191, China
| | - Qian Wang
- State Key Laboratory of Natural and Biomimetic Drugs and Chemical Biology Center, School of Pharmaceutical Sciences, Peking University, NO. 38, Xueyuan Rd., Beijing, 100191, China
| | - Xingxing Liang
- State Key Laboratory of Natural and Biomimetic Drugs and Chemical Biology Center, School of Pharmaceutical Sciences, Peking University, NO. 38, Xueyuan Rd., Beijing, 100191, China
| | - Jing Wang
- State Key Laboratory of Natural and Biomimetic Drugs and Chemical Biology Center, School of Pharmaceutical Sciences, Peking University, NO. 38, Xueyuan Rd., Beijing, 100191, China
| | - Hongwei Jin
- State Key Laboratory of Natural and Biomimetic Drugs and Chemical Biology Center, School of Pharmaceutical Sciences, Peking University, NO. 38, Xueyuan Rd., Beijing, 100191, China
| | - Yizhi Man
- School of Chemistry and Materials Science, Anhui Normal University, NO. 189 Jiuhua South Rd., Anhui, Wuhu, 241002, China
| | - Dongyang Guo
- State Key Laboratory of Natural and Biomimetic Drugs and Chemical Biology Center, School of Pharmaceutical Sciences, Peking University, NO. 38, Xueyuan Rd., Beijing, 100191, China
| | - Feng Gao
- School of Chemistry and Materials Science, Anhui Normal University, NO. 189 Jiuhua South Rd., Anhui, Wuhu, 241002, China
| | - Xinjing Tang
- State Key Laboratory of Natural and Biomimetic Drugs and Chemical Biology Center, School of Pharmaceutical Sciences, Peking University, NO. 38, Xueyuan Rd., Beijing, 100191, China
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2
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Taborda Ribas H, Sogayar MC, Dolga AM, Winnischofer SMB, Trombetta-Lima M. Lipid profile in breast cancer: From signaling pathways to treatment strategies. Biochimie 2024; 219:118-129. [PMID: 37993054 DOI: 10.1016/j.biochi.2023.11.008] [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: 08/25/2023] [Revised: 11/02/2023] [Accepted: 11/16/2023] [Indexed: 11/24/2023]
Abstract
Breast cancer is the most prevalent cancer in women. Metabolic abnormalities, particularly increased lipid synthesis and uptake, impact the onset and progression of the disease. However, the influence of lipid metabolism in breast cancer varies according to the disease stage and patient's hormone status. In postmenopausal patients, obesity is associated with a higher risk and poor prognosis of luminal tumors, while in premenopausal individuals, it is correlated to BRCA mutated tumors. In fact, the tumor's lipid profile may be used to distinguish between HER2+, luminal and BRCA-mutated tumors. Moreover, drug resistance was associated with increased fatty acid synthesis and alterations in membrane composition, impacting its fluidity and spatial subdomains such as lipid rafts. Here, we discuss the subtype-specific lipid metabolism alterations found in breast cancer and the potentiality of its modulation in a clinical setting.
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Affiliation(s)
- Hennrique Taborda Ribas
- Faculty of Science and Engineering, Department of Molecular Pharmacology, Research Institute of Pharmacy (GRIP), University of Groningen, Groningen, Netherlands; Postgraduate Program in Biochemistry Sciences, Sector of Biological Sciences, Federal University of Paraná, Curitiba, Brazil
| | - Mari C Sogayar
- Cell and Molecular Therapy Center (NUCEL), Faculdade de Medicina, Universidade de São Paulo, São Paulo, Brazil; Department of Biochemistry, Chemistry Institute, University of São Paulo, São Paulo, Brazil
| | - Amalia M Dolga
- Faculty of Science and Engineering, Department of Molecular Pharmacology, Research Institute of Pharmacy (GRIP), University of Groningen, Groningen, Netherlands
| | - Sheila M B Winnischofer
- Postgraduate Program in Biochemistry Sciences, Sector of Biological Sciences, Federal University of Paraná, Curitiba, Brazil; Biochemistry and Molecular Biology Department, Federal University of Paraná, Curitiba, Brazil; Postgraduate Program in Cellular and Molecular Biology, Biological Sciences Sector, UFPR, Curitiba, Brazil.
| | - Marina Trombetta-Lima
- Faculty of Science and Engineering, Department of Pharmaceutical Technology and Biopharmacy, Research Institute of Pharmacy (GRIP), University of Groningen, Groningen, Netherlands.
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3
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Terada N, Nagase T, Kayooka H, Adachi Y, Kato E. α-Tocotrienol in rice bran enhances steroidogenesis in mouse Leydig cell via increased gene expression of steroidogenic acute regulatory protein and induction of its mitochondrial translocation. Biosci Biotechnol Biochem 2024; 88:189-195. [PMID: 37880998 DOI: 10.1093/bbb/zbad153] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2023] [Accepted: 10/21/2023] [Indexed: 10/27/2023]
Abstract
Rice is a staple food in the Asian region and one of the world's major energy sources. Testosterone is a steroid hormone that maintains physical, sexual, and cognitive ability, and its decline causes health problems like late-onset hypogonadism. Evaluation of various grain extracts showed rice bran to stimulate testosterone secretion from Leydig model cells. α-Tocotrienol was found as a bioactive compound in rice bran, and mechanistic analysis showed the stimulation of steroid hormone synthesis through enhanced gene expression of steroidogenic acute regulatory protein as well as inducing mitochondrial localization of the protein. Preliminary study showed an increasing trend in serum testosterone levels in mice by oral intake of α-tocotrienol. These results suggest that α-tocotrienol intake may be effective in preventing symptoms caused by low testosterone levels.
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Affiliation(s)
- Naofumi Terada
- Frontiers in Bioscience, Graduate School of Agriculture, Hokkaido University, Kita-ku, Sapporo, Hokkaido, Japan
| | - Tomoaki Nagase
- Frontiers in Bioscience, Graduate School of Agriculture, Hokkaido University, Kita-ku, Sapporo, Hokkaido, Japan
| | - Hiromi Kayooka
- Frontiers in Bioscience, Graduate School of Agriculture, Hokkaido University, Kita-ku, Sapporo, Hokkaido, Japan
| | - Yusuke Adachi
- Department of Bioscience and Chemistry, School of Agriculture, Hokkaido University, Kita-ku, Sapporo, Hokkaido, Japan
| | - Eisuke Kato
- Division of Fundamental AgriScience and Research, Research Faculty of Agriculture, Hokkaido University, Kita-ku, Sapporo, Hokkaido, Japan
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A Novel Mechanism Underlying the Inhibitory Effects of Trastuzumab on the Growth of HER2-Positive Breast Cancer Cells. Cells 2022; 11:cells11244093. [PMID: 36552857 PMCID: PMC9777316 DOI: 10.3390/cells11244093] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2022] [Revised: 12/13/2022] [Accepted: 12/15/2022] [Indexed: 12/23/2022] Open
Abstract
To improve the efficacy of trastuzumab, it is essential to understand its mechanism of action. One of the significant issues that makes it difficult to determine the precise mechanism of trastuzumab action is the formation of various HER receptor dimers in HER2-positive breast cancer cells. So far, studies have focused on the role of HER2-HER3 heterodimers, and little is known regarding EGFR-HER2 heterodimers. Here, we study the role of trastuzumab on the cell signaling and cell proliferation mediated by EGFR-HER2 heterodimers in BT474 and SRBR3 cells. EGF stimulates the formation of both EGFR homodimer and EGFR-HER2 heterodimer. Trastuzumab only binds to HER2, not EGFR. Therefore, any effects of trastuzumab on EGF-induced activation of EGFR, HER2, and downstream signaling proteins, as well as cell proliferation, are through its effects on EGFR-HER2 heterodimers. We show that trastuzumab inhibits EGF-induced cell proliferation and cell cycle progression in BT474 and SKBR3 cells. Interestingly trastuzumab strongly inhibits EGF-induced Akt phosphorylation and slightly inhibits EGF-induced Erk activation, in both BT474 and SKBR3 cells. These data suggest the presence of a novel mechanism that allows trastuzumab to inhibit EGR-induced Akt activation and cell proliferation, without blocking EGF-induced EGFR-HER2 heterodimerization and activation. We show that trastuzumab inhibits EGF-induced lipid raft localization of the EGFR-HER2 heterodimer. Disruption of the lipid raft with MβCD blocks HER2-mediated AKT activation in a similar way to trastuzumab. MβCD and trastuzumab synergically inhibit AKT activation. We conclude that trastuzumab inhibits EGF-induced lipid raft localization of EGFR-HER2 heterodimer, which leads to the inhibition of Akt phosphorylation and cell proliferation, without blocking the formation and phosphorylation of the EGFR-HER2 heterodimer.
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Wang H, Yan W, Sun Y, Yang CS. δ-Tocotrienol is the most potent vitamin E form in inhibiting prostate cancer cell growth and inhibits prostate carcinogenesis in Ptenp-/- mice. Cancer Prev Res (Phila) 2022; 15:233-245. [PMID: 35144931 DOI: 10.1158/1940-6207.capr-21-0508] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2021] [Revised: 01/12/2022] [Accepted: 02/04/2022] [Indexed: 11/16/2022]
Abstract
Vitamin E compounds, consisting of α, β, γ, and δ forms of tocopherols and tocotrienols, display different cancer preventive activities in experimental models. Tocotrienols may have higher potential for clinical use due to their lower effective doses in laboratory studies. However, most studies on tocotrienols have been carried out using cancer cell lines. Strong data from animal studies may encourage the use of tocotrienols for human cancer prevention research. To examine the cancer inhibitory activity of different vitamin E forms, we first investigated their inhibitory activities of different vitamin E forms in prostate cancer cell lines. We found that δ-tocotrienol (δT3) was the most effective form in inhibiting cell growth at equivalent doses. Because of this in vitro potency, δT3 was further studied using prostate specific Pten-/- (Ptenp-/-) mice. We found that 0.05% δT3 in diet reduced prostate adenocarcinoma multiplicity by 32.7%, featuring increased apoptosis and reduced cell proliferation. The inhibitory effect of 0.05% δT3 in diet was similar to that of 0.2% δ-tocopherol (δT) in diet reported previously. Our further study on the δT3-induced transcriptome changes indicated that δT3 inhibited genes in blood vessel development in the prostate of Ptenp-/- mice, which was confirmed by immunohistochemistry. Together, our results demonstrate that δT3 effectively inhibits the development of prostate adenocarcinoma in Ptenp-/- mice, which involves inhibition of proliferation and angiogenesis and promotion of apoptosis.
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Affiliation(s)
- Hong Wang
- Chemical Biology, Ernest Mario School of Pharmacy, Rutgers, The State University of New Jersey
| | - William Yan
- Chemical Biology, Ernest Mario School of Pharmacy, Rutgers, The State University of New Jersey
| | - Yuhai Sun
- Chemical Biology, Ernest Mario School of Pharmacy, Rutgers, The State University of New Jersey
| | - Chung S Yang
- Chemical Biology, Ernest Mario School of Pharmacy, Rutgers, The State University of New Jersey
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6
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Alam M, Ali S, Ashraf GM, Bilgrami AL, Yadav DK, Hassan MI. Epigallocatechin 3-gallate: From green tea to cancer therapeutics. Food Chem 2022; 379:132135. [PMID: 35063850 DOI: 10.1016/j.foodchem.2022.132135] [Citation(s) in RCA: 93] [Impact Index Per Article: 46.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/22/2021] [Revised: 12/22/2021] [Accepted: 01/09/2022] [Indexed: 12/13/2022]
Abstract
Epigallocatechin 3-gallate (EGCG) possesses various biological functions, including anti-cancer and anti-inflammatory properties. EGCG is an abundant polyphenolic component originating from green tea extract that has exhibited versatile bioactivities in combating several cancers. This review highlights the pharmacological features of EGCG and its therapeutic implications in cancer and other metabolic diseases. It modulates numerous signaling pathways, regulating cells' undesired survival and proliferation, thus imparting strong tumor chemopreventive and therapeutic effects. EGCG initiates cell death through the intrinsic pathway and causes inhibition of EGFR, STAT3, and ERK pathways in several cancers. EGCG alters and inhibits ERK1/2, NF-κB, and Akt-mediated signaling, altering the Bcl-2 family proteins ratio and activating caspases in tumor cells. This review focuses on anti-cancer, anti-oxidant, anti-inflammatory, anti-angiogenesis, and apoptotic effects of EGCG. We further highlighted the potential of EGCG in different types of cancer, emphasizing clinical trials formulations that further improve our understanding of the therapeutic management of cancer and inflammatory diseases.
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Affiliation(s)
- Manzar Alam
- Centre for Interdisciplinary Research in Basic Sciences, Jamia Millia Islamia, New Delhi 110025, India
| | - Sabeeha Ali
- Centre for Interdisciplinary Research in Basic Sciences, Jamia Millia Islamia, New Delhi 110025, India
| | - Ghulam Md Ashraf
- Pre-Clinical Research Unit, King Fahd Medical Research Center, King Abdulaziz University, Jeddah, Saudi Arabia; Department of Medical Laboratory Technology, Faculty of Applied Medical Sciences, King Abdulaziz University, Jeddah, Saudi Arabia
| | - Anwar L Bilgrami
- Deanship of Scientific Research, King Abdulaziz University, Jeddah, Saudi Arabia
| | - Dharmendra Kumar Yadav
- College of Pharmacy, Gachon University of Medicine and Science, Hambakmoeiro, Yeonsu-gu, Incheon City 21924, South Korea.
| | - Md Imtaiyaz Hassan
- Centre for Interdisciplinary Research in Basic Sciences, Jamia Millia Islamia, New Delhi 110025, India.
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7
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Jeong J, Shin JH, Li W, Hong JY, Lim J, Hwang JY, Chung JJ, Yan Q, Liu Y, Choi J, Wysolmerski J. MAL2 mediates the formation of stable HER2 signaling complexes within lipid raft-rich membrane protrusions in breast cancer cells. Cell Rep 2021; 37:110160. [PMID: 34965434 PMCID: PMC8762588 DOI: 10.1016/j.celrep.2021.110160] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2021] [Revised: 08/16/2021] [Accepted: 12/02/2021] [Indexed: 12/18/2022] Open
Abstract
The lipid raft-resident protein, MAL2, has been implicated as contributing to the pathogenesis of several malignancies, including breast cancer, but the underlying mechanism for its effects on tumorigenesis is unknown. Here, we show that MAL2-mediated lipid raft formation leads to HER2 plasma membrane retention and enhanced HER2 signaling in breast cancer cells. We demonstrate physical interactions between HER2 and MAL2 in lipid rafts using proximity ligation assays. Super-resolution structured illumination microscopy imaging displays the structural organization of the HER2/Ezrin/NHERF1/PMCA2 protein complex. Formation of this protein complex maintains low intracellular calcium concentrations in the vicinity of the plasma membrane. HER2/MAL2 protein interactions in lipid rafts are enhanced in trastuzumab-resistant breast cancer cells. Our findings suggest that MAL2 is crucial for lipid raft formation, HER2 signaling, and HER2 membrane stability in breast cancer cells, suggesting MAL2 as a potential therapeutic target. Jeong et al. show that the formation of MAL2-mediated lipid raft-rich membrane protrusions is crucial for HER2 signaling in breast cancer cells. MAL2 is required for the formation of HER2/Ezrin/NHERF1/PMCA2 protein complexes. Formation of these protein complexes leads to a low calcium environment in the plasma membrane
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8
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Trujillo M, Kharbanda A, Corley C, Simmons P, Allen AR. Tocotrienols as an Anti-Breast Cancer Agent. Antioxidants (Basel) 2021; 10:1383. [PMID: 34573015 PMCID: PMC8472290 DOI: 10.3390/antiox10091383] [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: 08/02/2021] [Revised: 08/23/2021] [Accepted: 08/24/2021] [Indexed: 12/09/2022] Open
Abstract
In the past few years, breast cancer has become the most prevalent type of cancer. The majority of patients receive combinatorial chemotherapy treatments, which may result in increased risk of developing drug resistance, a reduced quality of life, and substantial side effects. Treatment modalities that could lessen the physical toll of standard treatments or act in synergy with chemotherapeutic treatments would benefit women worldwide. Research into tocotrienols has thus far demonstrated their potential to be such an agent, with tocotrienols surpassing the pharmacological potential of tocopherols. Further research using in vitro and preclinical breast cancer models to support clinical trials is needed. This review uses bibliometric analysis to highlight this gap in research and summarizes the current and future landscape of tocotrienols as an anti-breast cancer agent.
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Affiliation(s)
- Madison Trujillo
- Division of Radiation Health, University of Arkansas for Medical Sciences, Little Rock, AR 72205, USA
- Department of Pharmaceutical Sciences, University of Arkansas for Medical Sciences, Little Rock, AR 72205, USA
- Neurobiology & Developmental Sciences, University of Arkansas for Medical Sciences, Little Rock, AR 72205, USA
| | - Anupreet Kharbanda
- Department of Pharmaceutical Sciences, University of Arkansas for Medical Sciences, Little Rock, AR 72205, USA
| | - Christa Corley
- Division of Radiation Health, University of Arkansas for Medical Sciences, Little Rock, AR 72205, USA
- Department of Pharmaceutical Sciences, University of Arkansas for Medical Sciences, Little Rock, AR 72205, USA
- Neurobiology & Developmental Sciences, University of Arkansas for Medical Sciences, Little Rock, AR 72205, USA
| | - Pilar Simmons
- Division of Radiation Health, University of Arkansas for Medical Sciences, Little Rock, AR 72205, USA
- Department of Pharmaceutical Sciences, University of Arkansas for Medical Sciences, Little Rock, AR 72205, USA
| | - Antiño R Allen
- Division of Radiation Health, University of Arkansas for Medical Sciences, Little Rock, AR 72205, USA
- Department of Pharmaceutical Sciences, University of Arkansas for Medical Sciences, Little Rock, AR 72205, USA
- Neurobiology & Developmental Sciences, University of Arkansas for Medical Sciences, Little Rock, AR 72205, USA
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Abstract
KRAS is one of the most commonly mutated oncogene and a negative predictive factor for a number of targeted therapies. Therefore, the development of targeting strategies against mutant KRAS is urgently needed. One potential strategy involves disruption of K-Ras membrane localization, which is necessary for its proper function. In this review, we summarize the current data about the importance of membrane-anchorage of K-Ras and provide a critical evaluation of this targeting paradigm focusing mainly on prenylation inhibition. Additionally, we performed a RAS mutation-specific analysis of prenylation-related drug sensitivity data from a publicly available database (https://depmap.org/repurposing/) of three classes of prenylation inhibitors: statins, N-bisphosphonates, and farnesyl-transferase inhibitors. We observed significant differences in sensitivity to N-bisphosphonates and farnesyl-transferase inhibitors depending on KRAS mutational status and tissue of origin. These observations emphasize the importance of factors affecting efficacy of prenylation inhibition, like distinct features of different KRAS mutations, tissue-specific mutational patterns, K-Ras turnover, and changes in regulation of prenylation process. Finally, we enlist the factors that might be responsible for the large discrepancy between the outcomes in preclinical and clinical studies including methodological pitfalls, the incomplete understanding of K-Ras protein turnover, and the variation of KRAS dependency in KRAS mutant tumors.
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Fabrication of poly(sarcosine), poly (ethylene glycol), and poly (lactic-co-glycolic acid) polymeric nanoparticles for cancer drug delivery. J Drug Deliv Sci Technol 2021. [DOI: 10.1016/j.jddst.2020.102194] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
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de Oliveira VA, Pereira IC, Nogueira TR, Martins JA, Péres-Rodrigues G, de Jesus e Silva de Almendra B, Silva VC, Júnior DD, Leal FL, de Castro e Sousa JM, da Silva FC, de Carvalho Melo Cavalcanti AA, de Azevedo Paiva A. The Role of Vitamin E in Breast Cancer Treatment and Prevention: Current Perspectives. CURRENT NUTRITION & FOOD SCIENCE 2021. [DOI: 10.2174/1573401316999200614164711] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Background:
Regarding the multifactorial etiology of breast cancer, food choices, as well
as dietary intake, are the main modified factors in cancer prevention. In this sense, understanding
molecular pathways involved in breast cancer proliferation can help determine the mechanisms of
action of organic compounds such as antioxidant vitamins that are known to protect against cancer.
Objective:
Assess the mechanism of action of vitamin E in breast cancer modulation, with emphasis
on important markers of tumor development.
Methods:
It is a systematic review carried out in PubMed and Web of Science databases, from the
last 5 years, in Portuguese, English and Spanish. The following terms were selected according to The
Medical Subject Headings (MeSH): “breast cancer” OR “breast neoplasms”, “tocopherol” OR
“tocotrienols” OR “vitamin E”, as equated terms.
Results:
A total of 595 articles were found and 25 were selected according to inclusion criteria.
Vitamin E has been related to suppression/overexpression of important tumorigenic pathways,
mainly associated with proliferation, energy metabolism, chemosensitivity and invasion/metastasis.
Clinical studies of vitamin E supplementation are needed to assess the dose/response effect on breast
cancer patients.
Conclusion:
The safety of vitamin E supplementation is still controversial due to current studies design
available. However, when vitamin E is supplemented, the dose and therapeutic regimen must be
carefully decided, including the route of administration and breast cancer subtypes to enhance
desired effects and minimize unwanted side effects.
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Affiliation(s)
- Victor A. de Oliveira
- Department of Nutrition, Federal University of Piaui, UFPI, Piaui State, Teresina, Brazil
| | - Irislene C. Pereira
- Postgraduate Program in Food and Nutrition, Department of Nutrition, Federal University of Piaui, UFPI, Piaui State, Teresina, Brazil
| | - Thaís R. Nogueira
- Postgraduate Program in Food and Nutrition, Department of Nutrition, Federal University of Piaui, UFPI, Piaui State, Teresina, Brazil
| | - Jorddam A. Martins
- Postgraduate Program in Food and Nutrition, Department of Nutrition, Federal University of Piaui, UFPI, Piaui State, Teresina, Brazil
| | | | | | - Vladimir C. Silva
- Department of Biochemistry and Pharmacology, Federal University of Piaui, UFPI, Piaui State, Teresina, Brazil
| | - Dalton D. Júnior
- Department of Biochemistry and Pharmacology, Federal University of Piaui, UFPI, Piaui State, Teresina, Brazil
| | - Francisco L.T. Leal
- Department of Biophysics and Physiology, Federal University of Piaui, UFPI, Piaui State, Teresina, Brazil
| | - Joáo M. de Castro e Sousa
- Department of Biochemistry and Pharmacology, Federal University of Piaui, UFPI, Piaui State, Teresina, Brazil
| | - Felipe C.C. da Silva
- Department of Biology, Federal University of Piaui, UFPI, Piaui State, Picos, Brazil
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Cholesterol and Sphingolipid Enriched Lipid Rafts as Therapeutic Targets in Cancer. Int J Mol Sci 2021; 22:ijms22020726. [PMID: 33450869 PMCID: PMC7828315 DOI: 10.3390/ijms22020726] [Citation(s) in RCA: 38] [Impact Index Per Article: 12.7] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2020] [Revised: 01/09/2021] [Accepted: 01/11/2021] [Indexed: 02/07/2023] Open
Abstract
Lipid rafts are critical cell membrane lipid platforms enriched in sphingolipid and cholesterol content involved in diverse cellular processes. They have been proposed to influence membrane properties and to accommodate receptors within themselves by facilitating their interaction with ligands. Over the past decade, technical advances have improved our understanding of lipid rafts as bioactive structures. In this review, we will cover the more recent findings about cholesterol, sphingolipids and lipid rafts located in cellular and nuclear membranes in cancer. Collectively, the data provide insights on the role of lipid rafts as biomolecular targets in cancer with good perspectives for the development of innovative therapeutic strategies.
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Bobin-Dubigeon C, Bard JM, Luu TH, Le Vacon F, Nazih H. Basolateral Secretion from Caco-2 Cells Pretreated with Fecal Waters from Breast Cancer Patients Affects MCF7 Cell Viability. Nutrients 2020; 13:nu13010031. [PMID: 33374116 PMCID: PMC7824055 DOI: 10.3390/nu13010031] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2020] [Revised: 12/18/2020] [Accepted: 12/22/2020] [Indexed: 11/26/2022] Open
Abstract
We hypothesized that the role of microbiota in breast cancer relates to its influence on gut lipid metabolism. This was tested in an in vitro model combining MCF-7 and Caco-2 cells. A total of 32 women newly diagnosed for breast cancer before any treatment and 28 healthy women provided their stools. Bacterial DNA was amplified by qPCR targeting 16s rRNA specific to Bacteroidetes and Firmicutes phyla, Lactobacillales sp., Clostridium cluster IV, Faecalibacterium prausnitzii, Clostridium cluster XIVa, Roseburia intestinalis, Blautia sp., Lactonifactor longoviformis, Bifidobacterium sp., Coriobacteriaceae, Eggertella lenta, Escherichia, and Shigella. Fecal waters (FW) were quantified for short chain fatty acids (SCFA). Caco-2 cells grown on filter inserts were incubated apically with 10% FW for 24 h, and LXR, apolipoproteins AIV, and E gene expression were estimated by real time (RT) qPCR. Then, MCF-7 cells were incubated with the whole basolateral medium for 24 h, and their viability was estimated by 3-(4,5-Dimethyl-2-thiazolyl)-2,5-diphenyltetrazolium bromide (MTT) test. Regression models were used to determine the correlation between MCF-7 viability and bacteria relative abundance, Caco-2 cells lipid metabolism gene expression and stool composition, as well as microbiota composition and short chain fatty acids. Logistic regression models established disease odds ratios (OR) for MCF-7 viability and Caco-2 gene expression. The OR of MCF-7 viability was 1.05 (1.01–1.10) (OR (5th–95th), p = 0.04), while that of apo AIV gene expression was 0.63 (0.39–1.01), p = 0.055). Viability correlated with % Bifidobacterium sp. (21.18 ± 7.66, p = 0.008) and valerate (−2.849 ± 1.048, p = 0.009) (β ± s.d.). This study suggests that microbiota interacts with intestine cell lipid metabolism. Since these metabolites can reach breast cells by systemic circulation, we hypothesized that they may influence cancer disease.
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Affiliation(s)
- Christine Bobin-Dubigeon
- EA 2160—IUML FR3473 CNRS, Université de Nantes, 44035 Nantes, France; (C.B.-D.); (T.-H.L.); (H.N.)
- Institut de Cancérologie de l’Ouest, 44805 Saint-Herblain, France
| | - Jean-Marie Bard
- EA 2160—IUML FR3473 CNRS, Université de Nantes, 44035 Nantes, France; (C.B.-D.); (T.-H.L.); (H.N.)
- Institut de Cancérologie de l’Ouest, 44805 Saint-Herblain, France
- Correspondence:
| | - Trang-Huyen Luu
- EA 2160—IUML FR3473 CNRS, Université de Nantes, 44035 Nantes, France; (C.B.-D.); (T.-H.L.); (H.N.)
| | | | - Hassan Nazih
- EA 2160—IUML FR3473 CNRS, Université de Nantes, 44035 Nantes, France; (C.B.-D.); (T.-H.L.); (H.N.)
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14
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Wallert M, Kluge S, Schubert M, Koeberle A, Werz O, Birringer M, Lorkowski S. Diversity of Chromanol and Chromenol Structures and Functions: An Emerging Class of Anti-Inflammatory and Anti-Carcinogenic Agents. Front Pharmacol 2020; 11:362. [PMID: 32372948 PMCID: PMC7187200 DOI: 10.3389/fphar.2020.00362] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2019] [Accepted: 03/10/2020] [Indexed: 12/31/2022] Open
Abstract
Natural chromanols and chromenols comprise a family of molecules with enormous structural diversity and biological activities of pharmacological interest. A recently published systematic review described more than 230 structures that are derived from a chromanol ortpd chromenol core. For many of these compounds structure-activity relationships have been described with mostly anti-inflammatory as well as anti-carcinogenic activities. To extend the knowledge on the biological activity and the therapeutic potential of these promising class of natural compounds, we here present a report on selected chromanols and chromenols based on the availability of data on signaling pathways involved in inflammation, apoptosis, cell proliferation, and carcinogenesis. The chromanol and chromenol derivatives seem to bind or to interfere with several molecular targets and pathways, including 5-lipoxygenase, nuclear receptors, and the nuclear-factor "kappa-light-chain-enhancer" of activated B-cells (NFκB) pathway. Interestingly, available data suggest that the chromanols and chromenols are promiscuitively acting molecules that inhibit enzyme activities, bind to cellular receptors, and modulate mitochondrial function as well as gene expression. It is also noteworthy that the molecular modes of actions by which the chromanols and chromenols exert their effects strongly depend on the concentrations of the compounds. Thereby, low- and high-affinity molecular targets can be classified. This review summarizes the available knowledge on the biological activity of selected chromanols and chromenols which may represent interesting lead structures for the development of therapeutic anti-inflammatory and chemopreventive approaches.
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Affiliation(s)
- Maria Wallert
- Department of Biochemistry and Physiology of Nutrition, Institute of Nutritional Sciences, Friedrich Schiller University Jena, Jena, Germany
| | - Stefan Kluge
- Department of Biochemistry and Physiology of Nutrition, Institute of Nutritional Sciences, Friedrich Schiller University Jena, Jena, Germany
| | - Martin Schubert
- Department of Biochemistry and Physiology of Nutrition, Institute of Nutritional Sciences, Friedrich Schiller University Jena, Jena, Germany
| | - Andreas Koeberle
- Department of Pharmaceutical/Medicinal Chemistry, Institute of Pharmacy, Friedrich Schiller University Jena, Jena, Germany
- Michael Popp Research Institute, University of Innsbruck, Innsbruck, Austria
| | - Oliver Werz
- Department of Pharmaceutical/Medicinal Chemistry, Institute of Pharmacy, Friedrich Schiller University Jena, Jena, Germany
| | - Marc Birringer
- Department of Nutrition, Food and Consumer Sciences, University of Applied Sciences Fulda, Fulda, Germany
- Regionales Innovationszentrum Gesundheit und Lebensqualität (RIGL), Fulda, Germany
| | - Stefan Lorkowski
- Department of Biochemistry and Physiology of Nutrition, Institute of Nutritional Sciences, Friedrich Schiller University Jena, Jena, Germany
- Competence Center for Nutrition and Cardiovascular Health (nutriCARD) Halle-Jena-Leipzig, Jena, Germany
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15
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Yang CS, Luo P, Zeng Z, Wang H, Malafa M, Suh N. Vitamin E and cancer prevention: Studies with different forms of tocopherols and tocotrienols. Mol Carcinog 2020; 59:365-389. [PMID: 32017273 DOI: 10.1002/mc.23160] [Citation(s) in RCA: 72] [Impact Index Per Article: 18.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2019] [Revised: 01/09/2020] [Accepted: 01/17/2020] [Indexed: 12/13/2022]
Abstract
α-Tocopherol (α-T) is the major form of vitamin E (VE) in animals and has the highest activity in carrying out the essential antioxidant functions of VE. Because of the involvement of oxidative stress in carcinogenesis, the cancer prevention activity of α-T has been studied extensively. Lower VE intake or nutritional status has been shown to be associated with increased cancer risk, and supplementation of α-T to populations with VE insufficiency has shown beneficial effects in lowering the cancer risk in some intervention studies. However, several large intervention studies with α-T conducted in North America have not demonstrated a cancer prevention effect. More recent studies have centered on the γ- and δ-forms of tocopherols and tocotrienols (T3). In comparison with α-T, these forms have much lower systemic bioavailability but have shown stronger cancer-preventive activities in many studies in animal models and cell lines. γ-T3 and δ-T3 generally have even higher activities than γ-T and δ-T. In this article, we review recent results from human and laboratory studies on the cancer-preventive activities of different forms of tocopherols and tocotrienols, at nutritional and pharmacological levels. We aim to elucidate the possible mechanisms of the preventive actions and discuss the possible application of the available information for human cancer prevention by different VE forms.
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Affiliation(s)
- Chung S Yang
- Department of Chemical Biology, Ernest Mario School of Pharmacy, Rutgers, The State University of New Jersey, Piscataway, New Jersey
| | - Philip Luo
- Department of Chemical Biology, Ernest Mario School of Pharmacy, Rutgers, The State University of New Jersey, Piscataway, New Jersey
| | - Zishuo Zeng
- Department of Biochemistry and Microbiology, School of Environmental and Biological Sciences, Rutgers, The State University of New Jersey, New Brunswick, New Jersey
| | - Hong Wang
- Department of Chemical Biology, Ernest Mario School of Pharmacy, Rutgers, The State University of New Jersey, Piscataway, New Jersey
| | - Mokenge Malafa
- Department of Gastrointestinal Oncology, Moffitt Cancer Center, Tampa, Florida
| | - Nanjoo Suh
- Department of Chemical Biology, Ernest Mario School of Pharmacy, Rutgers, The State University of New Jersey, Piscataway, New Jersey
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16
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Fontana F, Raimondi M, Marzagalli M, Moretti RM, Marelli MM, Limonta P. Tocotrienols and Cancer: From the State of the Art to Promising Novel Patents. Recent Pat Anticancer Drug Discov 2019; 14:5-18. [PMID: 30652648 DOI: 10.2174/1574892814666190116111827] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2018] [Revised: 01/04/2019] [Accepted: 01/04/2019] [Indexed: 02/06/2023]
Abstract
BACKGROUND Tocotrienols (TTs) are vitamin E derivatives naturally occurring in several plants and vegetable oils. Like Tocopherols (TPs), they comprise four isoforms, α, β, γ and δ, but unlike TPs, they present an unsaturated isoprenoid chain. Recent studies indicate that TTs provide important health benefits, including neuroprotective, anti-inflammatory, anti-oxidant, cholesterol lowering and immunomodulatory effects. Moreover, they have been found to possess unique anti-cancer properties. OBJECTIVE The purpose of this review is to present an overview of the state of the art of TTs role in cancer prevention and treatment, as well as to describe recent patents proposing new methods for TTs isolation, chemical modification and use in cancer prevention and/or therapy. METHODS Recent literature and patents focusing on TTs anti-cancer applications have been identified and reviewed, with special regard to their scientific impact and novelty. RESULTS TTs have demonstrated significant anti-cancer activity in multiple tumor types, both in vitro and in vivo. Furthermore, they have shown synergistic effects when given in combination with standard anti-cancer agents or other anti-tumor natural compounds. Finally, new purification processes and transgenic sources have been designed in order to improve TTs production, and novel TTs formulations and synthetic derivatives have been developed to enhance their solubility and bioavailability. CONCLUSION The promising anti-cancer effects shown by TTs in several preclinical studies may open new opportunities for therapeutic interventions in different tumors. Thus, clinical trials aimed at confirming TTs chemopreventive and tumor-suppressing activity, particularly in combination with standard therapies, are urgently needed.
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Affiliation(s)
- Fabrizio Fontana
- Department of Excellence, Department of Pharmacological and Biomolecular Sciences, University of Milan, Milan, Italy
| | - Michela Raimondi
- Department of Excellence, Department of Pharmacological and Biomolecular Sciences, University of Milan, Milan, Italy
| | - Monica Marzagalli
- Department of Excellence, Department of Pharmacological and Biomolecular Sciences, University of Milan, Milan, Italy
| | - Roberta M Moretti
- Department of Excellence, Department of Pharmacological and Biomolecular Sciences, University of Milan, Milan, Italy
| | - Marina Montagnani Marelli
- Department of Excellence, Department of Pharmacological and Biomolecular Sciences, University of Milan, Milan, Italy
| | - Patrizia Limonta
- Department of Excellence, Department of Pharmacological and Biomolecular Sciences, University of Milan, Milan, Italy
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17
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Wu Y, Zhao Y, He X, He Z, Wang T, Wan L, Chen L, Yan N. Hydroxypropyl‑β‑cyclodextrin attenuates the epithelial‑to‑mesenchymal transition via endoplasmic reticulum stress in MDA‑MB‑231 breast cancer cells. Mol Med Rep 2019; 21:249-257. [PMID: 31746388 PMCID: PMC6896369 DOI: 10.3892/mmr.2019.10802] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2019] [Accepted: 10/02/2019] [Indexed: 01/04/2023] Open
Abstract
The epithelial-to-mesenchymal transition (EMT) has been reported to serve vital roles in regulating the progress of cancer metastasis. In addition, lipid rafts enriched in sphingolipids and cholesterol serve important roles in physiological and biochemical processes as a signaling platform. The present study explored the effects of hydroxypropyl-β-cyclodextrin (HP-β-CD), a cholesterol-depleting agent of lipid rafts, on the transforming growth factor (TGF)-β/Smad signaling pathway and endoplasmic reticulum (ER) stress in mediating EMT in MDA-MB-231 breast cancer cells. HP-β-CD treatment inhibited TGF-β1-induced EMT, based on increased expression of E-cadherin and decreased expression of vimentin. HP-β-CD reduced the expression of the TGF receptor TβRI and blocked the phosphorylation of Smad2. In addition, HP-β-CD increased the expression of ER stress-related proteins (binding immunoglobulin protein and activating transcription factor 6), but TGF-β1 could reverse these changes. Sodium 4-phenylbutyrate, an inhibitor of ER stress, suppressed these effects of HP-β-CD on EMT and TGF-β/Smad signaling pathway inhibition in breast cancer cells. Thus, HP-β-CD can block the TGF-β/Smad signaling pathway via diminishing the expression of TβRI which helps to activate ER stress and attenuate EMT in MDA-MB-231 cells, highlighting a potential target of lipid rafts for breast cancer treatment.
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Affiliation(s)
- Yifan Wu
- Department of Biochemistry and Molecular Biology, School of Basic Medical Science, Nanchang University, Nanchang, Jiangxi 330006, P.R. China
| | - Yiyang Zhao
- Department of Biochemistry and Molecular Biology, School of Basic Medical Science, Nanchang University, Nanchang, Jiangxi 330006, P.R. China
| | - Xuanhong He
- Department of Biochemistry and Molecular Biology, School of Basic Medical Science, Nanchang University, Nanchang, Jiangxi 330006, P.R. China
| | - Zhiqiang He
- Department of Biochemistry and Molecular Biology, School of Basic Medical Science, Nanchang University, Nanchang, Jiangxi 330006, P.R. China
| | - Tian Wang
- Department of Biochemistry and Molecular Biology, School of Basic Medical Science, Nanchang University, Nanchang, Jiangxi 330006, P.R. China
| | - Linxi Wan
- Department of Biochemistry and Molecular Biology, School of Basic Medical Science, Nanchang University, Nanchang, Jiangxi 330006, P.R. China
| | - Lai Chen
- Laboratory Animal Research Center for Science and Technology, Jiangxi University of Traditional Chinese Medicine, Nanchang, Jiangxi 330004, P.R. China
| | - Nianlong Yan
- Department of Biochemistry and Molecular Biology, School of Basic Medical Science, Nanchang University, Nanchang, Jiangxi 330006, P.R. China
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18
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Matsura T. Protective Effect of Tocotrienol on In Vitro and In Vivo Models of Parkinson's Disease. J Nutr Sci Vitaminol (Tokyo) 2019; 65:S51-S53. [PMID: 31619646 DOI: 10.3177/jnsv.65.s51] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Abstract
Parkinson's disease (PD) is a common progressive neurodegenerative disease. It has been reported that oxidative stress contributes, at least in part, to its pathogenesis. Although dietary epidemiological studies suggest that sufficient intake of vitamin E may prevent the onset of PD, antioxidative therapy for PD with exogenous antioxidants involving α-tocopherol has not been successful in the clinical setting thus far. In recent years, the non-antioxidant activities of vitamin E have been given attention to. In the present study, to determine the antioxidant-independent cytoprotective activity of vitamin E, we investigated whether tocotrienols (T3s), another members of vitamin E family, exhibit the neuroprotective effect in cell and mouse models of PD independently of their antioxidant activities. Treatment with T3s, especially γ- and δ-T3s, exhibited cytoprotective effects via activation of PI3K/Akt signaling pathway in a cellular PD model. We also identified estrogen receptor (ER) β as an upstream mediator of PI3K/Akt signaling and demonstrated the direct binding of T3 to ERβ in vitro. Silencing expression of caveolin suppressed the cytoprotective effects of T3, indicating that caveola formation plays an important role in the cytoprotection by T3 via ERβ/PI3K/Akt signaling pathway. Thus it has been shown that T3 exerts cytoprotective function by a novel mechanism, which includes membrane ERβ/PI3K/Akt signaling via caveola formation as well as its antioxidant activity. Furthermore, we revealed that δ-T3 treatment relieved PD-related symptoms in PD model mice. These results suggest that T3 elicits the cytoprotective effects via ERβ/PI3K/Akt signaling pathway in cellular and murine PD models.
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Affiliation(s)
- Tatsuya Matsura
- Division of Medical Biochemistry, Tottori University Faculty of Medicine
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19
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Transcriptome analysis reveals the molecular mechanisms of combined gamma-tocotrienol and hydroxychavicol in preventing the proliferation of 1321N1, SW1783, and LN18 glioma cancer cells. J Physiol Biochem 2019; 75:499-517. [DOI: 10.1007/s13105-019-00699-z] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2018] [Accepted: 07/31/2019] [Indexed: 12/31/2022]
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20
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Dronamraju V, Ibrahim BA, Briski KP, Sylvester PW. γ-Tocotrienol Suppression of the Warburg Effect Is Mediated by AMPK Activation in Human Breast Cancer Cells. Nutr Cancer 2019; 71:1214-1228. [PMID: 30955359 DOI: 10.1080/01635581.2019.1599969] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Abstract
Cancer cell metabolism is characterized by aerobic glycolysis or the "Warburg effect". Enhanced Akt signaling is associated with activation of various downstream enzymes involved in the glycolytic process, whereas activation of 5'-AMP-activated kinase (AMPK) acts to terminate energy expending mechanisms and decrease glycolytic enzyme expression. Studies were conducted to determine if the anticancer effects of γ-tocotrienol, are mediated through a suppression in aerobic glycolysis. Results show that treatment with 0-7 μM γ-tocotrienol throughout a 4-day culture period resulted in a dose-responsive increase in AMPK activation, and corresponding decrease in Akt activity in human MCF-7 and MDA-MB-231 breast cancer cells. γ-Tocotrienol treatment was also found to induce a dose-responsive decrease in phosphorylated-Fox03 (inactivated), a transcription factor that acts to inhibit in the levels of glycolytic enzyme, and this decrease was associated with a reduction in glycolytic enzyme levels and activity, as well as glucose consumption in these cells. PCR microarray analysis shows that γ-tocotrienol treatment decreases the expression of genes associate with metabolic signaling and glycolysis in MCF-7 and MDA-MB-231 breast cancer cells. In summary, these findings demonstrate that the anticancer effects of γ-tocotrienol are mediated, at least in part, by a suppression in the Warburg effect.
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Affiliation(s)
| | - Baher A Ibrahim
- College of Pharmacy, University of Louisiana at Monroe , Monroe , Louisiana , USA
| | - Karen P Briski
- College of Pharmacy, University of Louisiana at Monroe , Monroe , Louisiana , USA
| | - Paul W Sylvester
- College of Pharmacy, University of Louisiana at Monroe , Monroe , Louisiana , USA
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21
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Utilization of Vitamin E Analogs to Protect Normal Tissues While Enhancing Antitumor Effects. Semin Radiat Oncol 2019; 29:55-61. [PMID: 30573184 DOI: 10.1016/j.semradonc.2018.10.008] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
Despite advances in radiation delivery techniques, side effects of radiation therapy due to radiation exposure of normal tissues are common and can limit the deliverable dose to tumors. Significant interests lie in pharmacologic modifiers that may protect against normal tissue toxicity from cancer treatment while simultaneously enhancing the tumor response to therapy. While no such treatments are available in the clinic, this is an area of active preclinical and clinical research. This review summarizes research studies that provide evidence to indicate that tocotrienols, natural forms of vitamin E, are potent radiation protectors and may also have antitumor effects. Hence, several current clinical trials test tocotrienols as concomitant treatment in cancer therapies.
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22
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Qian XL, Pan YH, Huang QY, Shi YB, Huang QY, Hu ZZ, Xiong LX. Caveolin-1: a multifaceted driver of breast cancer progression and its application in clinical treatment. Onco Targets Ther 2019; 12:1539-1552. [PMID: 30881011 PMCID: PMC6398418 DOI: 10.2147/ott.s191317] [Citation(s) in RCA: 34] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022] Open
Abstract
Human breast cancer is one of the most frequent cancer diseases and causes of death among female population worldwide. It appears at a high incidence and has a high malignancy, mortality, recurrence rate and poor prognosis. Caveolin-1 (Cav1) is the main component of caveolae and participates in various biological events. More and more experimental studies have shown that Cav1 plays a critical role in the progression of breast cancer including cell proliferation, apoptosis, autophagy, invasion, migration and breast cancer metastasis. Besides, Cav1 has been found to be involved in chemotherapeutics and radiotherapy resistance, which are still the principal problems encountered in clinical breast cancer treatment. In addition, stromal Cav1 may be a potential indicator for breast cancer patients’ prognosis. In the current review, we cover the state-of-the-art study, development and progress on Cav1 and breast cancer, altogether describing the role of Cav1 in breast cancer progression and application in clinical treatment, in the hope of providing a basis for further research and promoting CAV1 gene as a potential target to diagnose and treat aggressive breast cancers.
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Affiliation(s)
- Xian-Ling Qian
- Department of Pathophysiology, Basic Medical College, Nanchang University, Nanchang 330006, China, ; .,First Clinical Medical College, Nanchang University, Nanchang 330006, China
| | - Yi-Hang Pan
- Department of Pathophysiology, Basic Medical College, Nanchang University, Nanchang 330006, China, ; .,First Clinical Medical College, Nanchang University, Nanchang 330006, China
| | - Qi-Yuan Huang
- Department of Pathophysiology, Basic Medical College, Nanchang University, Nanchang 330006, China, ; .,Second Clinical Medical College, Nanchang University, Nanchang 330006, China
| | - Yu-Bo Shi
- Department of Pathophysiology, Basic Medical College, Nanchang University, Nanchang 330006, China, ;
| | - Qing-Yun Huang
- Department of Pathophysiology, Basic Medical College, Nanchang University, Nanchang 330006, China, ;
| | - Zhen-Zhen Hu
- Department of Pathophysiology, Basic Medical College, Nanchang University, Nanchang 330006, China, ; .,Jiangxi Province Key Laboratory of Tumor Pathogenesis and Molecular Pathology, Nanchang 330006, China, ;
| | - Li-Xia Xiong
- Department of Pathophysiology, Basic Medical College, Nanchang University, Nanchang 330006, China, ; .,Jiangxi Province Key Laboratory of Tumor Pathogenesis and Molecular Pathology, Nanchang 330006, China, ;
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23
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Aggarwal V, Kashyap D, Sak K, Tuli HS, Jain A, Chaudhary A, Garg VK, Sethi G, Yerer MB. Molecular Mechanisms of Action of Tocotrienols in Cancer: Recent Trends and Advancements. Int J Mol Sci 2019; 20:E656. [PMID: 30717416 PMCID: PMC6386883 DOI: 10.3390/ijms20030656] [Citation(s) in RCA: 58] [Impact Index Per Article: 11.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2018] [Revised: 01/28/2019] [Accepted: 01/28/2019] [Indexed: 02/07/2023] Open
Abstract
Tocotrienols, found in several natural sources such as rice bran, annatto seeds, and palm oil have been reported to exert various beneficial health promoting properties especially against chronic diseases, including cancer. The incidence of cancer is rapidly increasing around the world not only because of continual aging and growth in global population, but also due to the adaptation of Western lifestyle behaviours, including intake of high fat diets and low physical activity. Tocotrienols can suppress the growth of different malignancies, including those of breast, lung, ovary, prostate, liver, brain, colon, myeloma, and pancreas. These findings, together with the reported safety profile of tocotrienols in healthy human volunteers, encourage further studies on the potential application of these compounds in cancer prevention and treatment. In the current article, detailed information about the potential molecular mechanisms of actions of tocotrienols in different cancer models has been presented and the possible effects of these vitamin E analogues on various important cancer hallmarks, i.e., cellular proliferation, apoptosis, angiogenesis, metastasis, and inflammation have been briefly analyzed.
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Affiliation(s)
- Vaishali Aggarwal
- Department of Advanced Pediatric Center (APC), Postgraduate Institute of Medical Education and Research (PGIMER), Chandigarh, Punjab 160012, India.
| | - Dharambir Kashyap
- Department of Histopathology, Postgraduate Institute of Medical Education and Research (PGIMER), Chandigarh, Punjab 160012, India.
| | | | - Hardeep Singh Tuli
- Department of Biotechnology, Maharishi Markandeshwar (Deemed to be University), Mullana-Ambala 133207, Haryana, India.
| | - Aklank Jain
- Department of Animal Sciences, Central University of Punjab, City Campus, Mansa Road, Bathinda 151001, India.
| | - Ashun Chaudhary
- Department of Biotechnology, Maharishi Markandeshwar (Deemed to be University), Mullana-Ambala 133207, Haryana, India.
| | - Vivek Kumar Garg
- Department of Biochemistry, Government Medical College and Hospital (GMCH), Chandigarh, Punjab 160031, India.
| | - Gautam Sethi
- Department of Pharmacology, Yong Loo Lin School of Medicine, National University of Singapore, Singapore 117600, Singapore.
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Molecular Targets of Epigallocatechin-Gallate (EGCG): A Special Focus on Signal Transduction and Cancer. Nutrients 2018; 10:nu10121936. [PMID: 30563268 PMCID: PMC6315581 DOI: 10.3390/nu10121936] [Citation(s) in RCA: 159] [Impact Index Per Article: 26.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2018] [Revised: 11/30/2018] [Accepted: 12/04/2018] [Indexed: 12/15/2022] Open
Abstract
Green tea is a beverage that is widely consumed worldwide and is believed to exert effects on different diseases, including cancer. The major components of green tea are catechins, a family of polyphenols. Among them, epigallocatechin-gallate (EGCG) is the most abundant and biologically active. EGCG is widely studied for its anti-cancer properties. However, the cellular and molecular mechanisms explaining its action have not been completely understood, yet. EGCG is effective in vivo at micromolar concentrations, suggesting that its action is mediated by interaction with specific targets that are involved in the regulation of crucial steps of cell proliferation, survival, and metastatic spread. Recently, several proteins have been identified as EGCG direct interactors. Among them, the trans-membrane receptor 67LR has been identified as a high affinity EGCG receptor. 67LR is a master regulator of many pathways affecting cell proliferation or apoptosis, also regulating cancer stem cells (CSCs) activity. EGCG was also found to be interacting directly with Pin1, TGFR-II, and metalloproteinases (MMPs) (mainly MMP2 and MMP9), which respectively regulate EGCG-dependent inhibition of NF-kB, epithelial-mesenchimal transaction (EMT) and cellular invasion. EGCG interacts with DNA methyltransferases (DNMTs) and histone deacetylases (HDACs), which modulates epigenetic changes. The bulk of this novel knowledge provides information about the mechanisms of action of EGCG and may explain its onco-suppressive function. The identification of crucial signalling pathways that are related to cancer onset and progression whose master regulators interacts with EGCG may disclose intriguing pharmacological targets, and eventually lead to novel combined treatments in which EGCG acts synergistically with known drugs.
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25
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Montagnani Marelli M, Marzagalli M, Fontana F, Raimondi M, Moretti RM, Limonta P. Anticancer properties of tocotrienols: A review of cellular mechanisms and molecular targets. J Cell Physiol 2018; 234:1147-1164. [PMID: 30066964 DOI: 10.1002/jcp.27075] [Citation(s) in RCA: 41] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2018] [Accepted: 06/28/2018] [Indexed: 12/13/2022]
Abstract
Vitamin E is composed of two groups of compounds: α-, β-, γ-, and δ-tocopherols (TPs), and the corresponding unsaturated tocotrienols (TTs). TTs are found in natural sources such as red palm oil, annatto seeds, and rice bran. In the last decades, TTs (specifically, γ-TT and δ-TT) have gained interest due to their health benefits in chronic diseases, based on their antioxidant, neuroprotective, cholesterol-lowering, anti-inflammatory activities. Several in vitro and in vivo studies pointed out that TTs also exert a significant antitumor activity in a wide range of cancer cells. Specifically, TTs were shown to exert antiproliferative/proapoptotic effects and to reduce the metastatic or angiogenic properties of different cancer cells; moreover, these compounds were reported to specifically target the subpopulation of cancer stem cells, known to be deeply involved in the development of resistance to standard therapies. Interestingly, recent studies pointed out that TTs exert a synergistic antitumor effect on cancer cells when given in combination with either standard antitumor agents (i.e., chemotherapeutics, statins, "targeted" therapies) or natural compounds with anticancer activity (i.e., sesamin, epigallocatechin gallate (EGCG), resveratrol, ferulic acid). Based on these observations, different TT synthetic derivatives and formulations were recently developed and demonstrated to improve TT water solubility and to reduce TT metabolism in cancer cells, thus increasing their biological activity. These promising results, together with the safety of TT administration in healthy subjects, suggest that these compounds might represent a new chemopreventive or anticancer treatment (i.e., in combination with standard therapies) strategy. Clinical trials aimed at confirming this antitumor activity of TTs are needed.
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Affiliation(s)
- Marina Montagnani Marelli
- Department of Pharmacological and Biomolecular Sciences, Università degli Studi di Milano, Milano, Italy
| | - Monica Marzagalli
- Department of Pharmacological and Biomolecular Sciences, Università degli Studi di Milano, Milano, Italy
| | - Fabrizio Fontana
- Department of Pharmacological and Biomolecular Sciences, Università degli Studi di Milano, Milano, Italy
| | - Michela Raimondi
- Department of Pharmacological and Biomolecular Sciences, Università degli Studi di Milano, Milano, Italy
| | - Roberta Manuela Moretti
- Department of Pharmacological and Biomolecular Sciences, Università degli Studi di Milano, Milano, Italy
| | - Patrizia Limonta
- Department of Pharmacological and Biomolecular Sciences, Università degli Studi di Milano, Milano, Italy
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26
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Sato C, Kaneko S, Sato A, Virgona N, Namiki K, Yano T. Combination Effect of δ-Tocotrienol and γ-Tocopherol on Prostate Cancer Cell Growth. J Nutr Sci Vitaminol (Tokyo) 2018; 63:349-354. [PMID: 29225320 DOI: 10.3177/jnsv.63.349] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Abstract
Tocotrienols (T3s) and tocopherols (Tocs) are both members of the vitamin E family. It is known that δ-tocotrienol (δ-T3) has displayed the most potent anti-cancer activity amongst the tocotrienols. On the other hand, γ-tocopherol (γ-Toc) is reported to have a protective effect against prostate cancer. Therefore, we investigated whether the combination of γ-Toc and δ-T3 could strengthen the inhibitory effect of δ-T3 on prostate cancer cell growth. In this study the effect of combined δ-T3 (annatto T3 oil) and γ-Toc (Tmix, γ-Toc-rich oil) therapy was assessed against human androgen-dependent prostate cancer cells (LNCaP). We found that combined treatment of δ-T3 (10 μM) and γ-Toc (5 μM) resulted in reinforced anti-prostate cancer activity. Specifically, cell cycle phase distribution analysis revealed that in addition to G1 arrest caused by the treatment with δ-T3, the combination of δ-T3 with γ-Toc induced G2/M arrest. Enhanced induction of apoptosis by the combined treatment was also observed. These findings indicate that combination of δ-T3 and γ-Toc significantly inhibits prostate cancer cell growth due to the simultaneous cell cycle arrest in the G1 phase and G2/M phase.
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Affiliation(s)
- Chiaki Sato
- Graduate School of Food and Nutritional Sciences, Toyo University
| | - Saki Kaneko
- Graduate School of Food and Nutritional Sciences, Toyo University
| | - Ayami Sato
- Research Institute of Life Innovation, Toyo University
| | | | - Kozue Namiki
- Graduate School of Science and Engineering, Saitama University
| | - Tomohiro Yano
- Graduate School of Food and Nutritional Sciences, Toyo University.,Research Institute of Life Innovation, Toyo University
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Li W, Xu L, Che X, Li H, Zhang Y, Song N, Wen T, Hou K, Yang Y, Zhou L, Xin X, Xu L, Zeng X, Shi S, Liu Y, Qu X, Teng Y. C-Cbl reverses HER2-mediated tamoxifen resistance in human breast cancer cells. BMC Cancer 2018; 18:507. [PMID: 29720121 PMCID: PMC5930956 DOI: 10.1186/s12885-018-4387-5] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2017] [Accepted: 04/17/2018] [Indexed: 01/12/2023] Open
Abstract
Background Tamoxifen is a frontline therapy for estrogen receptor (ER)-positive breast cancer in premenopausal women. However, many patients develop resistance to tamoxifen, and the mechanism underlying tamoxifen resistance is not well understood. Here we examined whether ER-c-Src-HER2 complex formation is involved in tamoxifen resistance. Methods MTT and colony formation assays were used to measure cell viability and proliferation. Western blot was used to detect protein expression and protein complex formations were detected by immunoprecipitation and immunofluorescence. SiRNA was used to examine the function of HER2 in of BT474 cells. An in vivo xenograft animal model was established to examine the role of c-Cbl in tumor growth. Results MTT and colony formation assay showed that BT474 cells are resistant to tamoxifen and T47D cells are sensitive to tamoxifen. Immunoprecipitation experiments revealed ER-c-Src-HER2 complex formation in BT474 cells but not in T47D cells. However, ER-c-Src-HER2 complex formation was detected after overexpressing HER2 in T47D cells and these cells were more resistant to tamoxifen. HER2 knockdown by siRNA in BT474 cells reduced ER-c-Src-HER2 complex formation and reversed tamoxifen resistance. ER-c-Src-HER2 complex formation was also disrupted and tamoxifen resistance was reversed in BT474 cells by the c-Src inhibitor PP2 and HER2 antibody trastuzumab. Nystatin, a lipid raft inhibitor, reduced ER-c-Src-HER2 complex formation and partially reversed tamoxifen resistance. ER-c-Src-HER2 complex formation was disrupted by overexpression of c-Cbl but not by the c-Cbl ubiquitin ligase mutant. In addition, c-Cbl could reverse tamoxifen resistance in BT474 cells, but the ubiquitin ligase mutant had no effect. The effect of c-Cbl was validated in BT474 tumor-bearing nude mice in vivo. Immunofluorescence also revealed ER-c-Src-HER2 complex formation was reduced in tumor tissues of nude mice with c-Cbl overexpression. Conclusions Our results suggested that c-Cbl can reverse tamoxifen resistance in HER2-overexpressing breast cancer cells by inhibiting the formation of the ER-c-Src-HER2 complex. Electronic supplementary material The online version of this article (10.1186/s12885-018-4387-5) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Wei Li
- Department of Medical Oncology, the First Hospital of China Medical University, Shenyang, 110001, Liaoning, China.,Key Laboratory of Anticancer Drugs and Biotherapy of Liaoning Province, the First Hospital of China Medical University, NO. 155, North Nanjing Street, Heping District, Shenyang, 110001, Liaoning, China
| | - Ling Xu
- Department of Medical Oncology, the First Hospital of China Medical University, Shenyang, 110001, Liaoning, China.,Key Laboratory of Anticancer Drugs and Biotherapy of Liaoning Province, the First Hospital of China Medical University, NO. 155, North Nanjing Street, Heping District, Shenyang, 110001, Liaoning, China
| | - Xiaofang Che
- Department of Medical Oncology, the First Hospital of China Medical University, Shenyang, 110001, Liaoning, China.,Key Laboratory of Anticancer Drugs and Biotherapy of Liaoning Province, the First Hospital of China Medical University, NO. 155, North Nanjing Street, Heping District, Shenyang, 110001, Liaoning, China
| | - Haizhou Li
- Jinzhou Center Hospital, Jinzhou, 121000, Liaoning, China
| | - Ye Zhang
- Department of Medical Oncology, the First Hospital of China Medical University, Shenyang, 110001, Liaoning, China.,Key Laboratory of Anticancer Drugs and Biotherapy of Liaoning Province, the First Hospital of China Medical University, NO. 155, North Nanjing Street, Heping District, Shenyang, 110001, Liaoning, China
| | - Na Song
- Department of Medical Oncology, the First Hospital of China Medical University, Shenyang, 110001, Liaoning, China.,Key Laboratory of Anticancer Drugs and Biotherapy of Liaoning Province, the First Hospital of China Medical University, NO. 155, North Nanjing Street, Heping District, Shenyang, 110001, Liaoning, China
| | - Ti Wen
- Department of Medical Oncology, the First Hospital of China Medical University, Shenyang, 110001, Liaoning, China.,Key Laboratory of Anticancer Drugs and Biotherapy of Liaoning Province, the First Hospital of China Medical University, NO. 155, North Nanjing Street, Heping District, Shenyang, 110001, Liaoning, China
| | - Kezuo Hou
- Department of Medical Oncology, the First Hospital of China Medical University, Shenyang, 110001, Liaoning, China.,Key Laboratory of Anticancer Drugs and Biotherapy of Liaoning Province, the First Hospital of China Medical University, NO. 155, North Nanjing Street, Heping District, Shenyang, 110001, Liaoning, China
| | - Yi Yang
- Laboratory Animal Center, China Medical University, Shenyang, 110001, Liaoning, China
| | - Lu Zhou
- Department of Medical Oncology, the First Hospital of China Medical University, Shenyang, 110001, Liaoning, China.,Key Laboratory of Anticancer Drugs and Biotherapy of Liaoning Province, the First Hospital of China Medical University, NO. 155, North Nanjing Street, Heping District, Shenyang, 110001, Liaoning, China
| | - Xing Xin
- Department of Medical Oncology, the First Hospital of China Medical University, Shenyang, 110001, Liaoning, China.,Key Laboratory of Anticancer Drugs and Biotherapy of Liaoning Province, the First Hospital of China Medical University, NO. 155, North Nanjing Street, Heping District, Shenyang, 110001, Liaoning, China
| | - Lu Xu
- Department of Medical Oncology, the First Hospital of China Medical University, Shenyang, 110001, Liaoning, China.,Key Laboratory of Anticancer Drugs and Biotherapy of Liaoning Province, the First Hospital of China Medical University, NO. 155, North Nanjing Street, Heping District, Shenyang, 110001, Liaoning, China
| | - Xue Zeng
- Department of Medical Oncology, the First Hospital of China Medical University, Shenyang, 110001, Liaoning, China.,Key Laboratory of Anticancer Drugs and Biotherapy of Liaoning Province, the First Hospital of China Medical University, NO. 155, North Nanjing Street, Heping District, Shenyang, 110001, Liaoning, China
| | - Sha Shi
- Department of Medical Oncology, the First Hospital of China Medical University, Shenyang, 110001, Liaoning, China.,Key Laboratory of Anticancer Drugs and Biotherapy of Liaoning Province, the First Hospital of China Medical University, NO. 155, North Nanjing Street, Heping District, Shenyang, 110001, Liaoning, China
| | - Yunpeng Liu
- Department of Medical Oncology, the First Hospital of China Medical University, Shenyang, 110001, Liaoning, China.,Key Laboratory of Anticancer Drugs and Biotherapy of Liaoning Province, the First Hospital of China Medical University, NO. 155, North Nanjing Street, Heping District, Shenyang, 110001, Liaoning, China
| | - Xiujuan Qu
- Department of Medical Oncology, the First Hospital of China Medical University, Shenyang, 110001, Liaoning, China. .,Key Laboratory of Anticancer Drugs and Biotherapy of Liaoning Province, the First Hospital of China Medical University, NO. 155, North Nanjing Street, Heping District, Shenyang, 110001, Liaoning, China.
| | - Yuee Teng
- Department of Medical Oncology, the First Hospital of China Medical University, Shenyang, 110001, Liaoning, China. .,Key Laboratory of Anticancer Drugs and Biotherapy of Liaoning Province, the First Hospital of China Medical University, NO. 155, North Nanjing Street, Heping District, Shenyang, 110001, Liaoning, China.
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Tocotrienols: The promising analogues of vitamin E for cancer therapeutics. Pharmacol Res 2018; 130:259-272. [DOI: 10.1016/j.phrs.2018.02.017] [Citation(s) in RCA: 78] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/14/2017] [Revised: 02/06/2018] [Accepted: 02/12/2018] [Indexed: 12/16/2022]
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Birringer M, Siems K, Maxones A, Frank J, Lorkowski S. Natural 6-hydroxy-chromanols and -chromenols: structural diversity, biosynthetic pathways and health implications. RSC Adv 2018; 8:4803-4841. [PMID: 35539527 PMCID: PMC9078042 DOI: 10.1039/c7ra11819h] [Citation(s) in RCA: 48] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2017] [Accepted: 01/18/2018] [Indexed: 01/26/2023] Open
Abstract
We present the first comprehensive and systematic review on the structurally diverse toco-chromanols and -chromenols found in photosynthetic organisms, including marine organisms, and as metabolic intermediates in animals. The focus of this work is on the structural diversity of chromanols and chromenols that result from various side chain modifications. We describe more than 230 structures that derive from a 6-hydroxy-chromanol- and 6-hydroxy-chromenol core, respectively, and comprise di-, sesqui-, mono- and hemiterpenes. We assort the compounds into a structure-activity relationship with special emphasis on anti-inflammatory and anti-carcinogenic activities of the congeners. This review covers the literature published from 1970 to 2017.
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Affiliation(s)
- Marc Birringer
- Department of Nutritional, Food and Consumer Sciences, Fulda University of Applied Sciences Leipziger Straße 123 36037 Fulda Germany
| | - Karsten Siems
- AnalytiCon Discovery GmbH Hermannswerder Haus 17 14473 Potsdam Germany
| | - Alexander Maxones
- Department of Nutritional, Food and Consumer Sciences, Fulda University of Applied Sciences Leipziger Straße 123 36037 Fulda Germany
| | - Jan Frank
- Institute of Biological Chemistry and Nutrition, University of Hohenheim Garbenstr. 28 70599 Stuttgart Germany
| | - Stefan Lorkowski
- Institute of Nutrition, Friedrich Schiller University Jena Dornburger Str. 25 07743 Jena Germany
- Competence Cluster for Nutrition and Cardiovascular Health (nutriCARD), Halle-Jena-Leipzig Germany
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30
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Alawin OA, Ahmed RA, Dronamraju V, Briski KP, Sylvester PW. γ-Tocotrienol-induced disruption of lipid rafts in human breast cancer cells is associated with a reduction in exosome heregulin content. J Nutr Biochem 2017; 48:83-93. [PMID: 28797930 DOI: 10.1016/j.jnutbio.2017.06.013] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2016] [Revised: 05/09/2017] [Accepted: 06/22/2017] [Indexed: 12/27/2022]
Abstract
Overexpression of heregulin, a potent ligand that activates HER3 and HER4 receptors, plays a significant role in the development of chemotherapy resistance in breast cancer patients. Exosomes released from cancer cells are small vesicles originating from the outward budding of lipid rafts that carry various mitogenic proteins that then act locally in an autocrine/paracrine manner to stimulate cancer cell growth. Since the anticancer activity of γ-tocotrienol has been shown to be mediated in part through the disruption of lipid rafts, studies were conducted to determine the effect of γ-tocotrienol on exosomes mitogenic biopotency. Exosomes isolated from the media of cultured T47D breast cancer cells were found to stimulate T47D cell growth in a dose-dependent manner. These growth stimulating effects were due to the high levels of heregulin contained in the exosomes that act to stimulate HER3 and HER4 activation, heterodimerization and mitogenic signaling. Exposure to 5 μM γ-tocotrienol resulted in the selective accumulation and disruption in the integrity of the lipid raft microdomain and a corresponding decrease in exosome heregulin content and mitogenic biopotency. These findings provide strong evidence indicating that the anticancer effects of γ-tocotrienol are mediated, at least in part, by directly disrupting HER dimerization and signaling within the lipid rafts and indirectly by reducing exosome heregulin content and subsequent autocrine/paracrine mitogenic stimulation.
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Affiliation(s)
- Osama A Alawin
- School of Pharmacy, University of Louisiana at Monroe, 700 University Avenue, Monroe, LA 71209, USA
| | - Rayan A Ahmed
- School of Pharmacy, University of Louisiana at Monroe, 700 University Avenue, Monroe, LA 71209, USA
| | | | - Karen P Briski
- School of Pharmacy, University of Louisiana at Monroe, 700 University Avenue, Monroe, LA 71209, USA
| | - Paul W Sylvester
- School of Pharmacy, University of Louisiana at Monroe, 700 University Avenue, Monroe, LA 71209, USA.
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Abu-Fayyad A, Nazzal S. Synthesis, physiochemical characterization, and in vitro antitumor activity of the amide and pH cleavable hydrazone conjugates of γ-tocotrienol isomer of vitamin E with methoxy-poly(ethylene) glycol. Int J Pharm 2017. [PMID: 28627454 DOI: 10.1016/j.ijpharm.2017.06.033] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
The anticancer activity of water soluble methoxy polyethylene glycol (mPEG) derivatives of tocotrienol (T3) isomers of vitamin E was previously found to be reduced when compared to the parent free isomers. This could be due to the ester bond formation between the mPEG and the 6-OH group on the chroman moiety of the T3 isomer. To further investigate, the objectives of the current study were to (1) synthesize and characterize stable amide and cleavable hydrazone conjugates between mPEG and carbon-5 on the chroman moiety of T3, and (2) examine the cytotoxicity of the newly synthesized mPEG conjugates against breast (MCF-7 and MDA-MB-231) and pancreatic (BxPC-3 and PANC-1) cancer cells. Conjugates were synthesized by direct conjugation of succinyl chloride derivatives of mPEG to the α-tocopherol and γ-tocotrienol isomers of vitamin E, and were characterized by 1H NMR, FT-IR, and mass spectrometry. The micelles of the amide and hydrazone self-assembled conjugates were characterized for size, zeta, CMC, and stability at different pH media. The hydrolysis of the hydrazone conjugate was pH dependent with highest release at acidic (pH 5.5) conditions, whereas the amide conjugate was stable in all tested media. The amide conjugate nonetheless showed greater cytotoxicity than the hydrazone conjugate, which suggested that maintaining solubility and the presence of free 6-OH group are important for γ-T3 to exert anticancer activity in vitro. The results from the current study demonstrated the importance of considering the nature of the chemical bond between T3 and mPEG when designing functional ingredients for use in drug delivery.
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Affiliation(s)
- Ahmed Abu-Fayyad
- College of Health and Pharmaceutical Sciences, School of Pharmacy, University of Louisiana at Monroe, Monroe, LA, USA
| | - Sami Nazzal
- College of Health and Pharmaceutical Sciences, School of Pharmacy, University of Louisiana at Monroe, Monroe, LA, USA; College of Pharmacy, Taipei Medical University, Taipei, Taiwan.
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32
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Li Y, Shan F, Chen J. Lipid raft-mediated miR-3908 inhibition of migration of breast cancer cell line MCF-7 by regulating the interactions between AdipoR1 and Flotillin-1. World J Surg Oncol 2017; 15:69. [PMID: 28327197 PMCID: PMC5361711 DOI: 10.1186/s12957-017-1120-9] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2016] [Accepted: 02/14/2017] [Indexed: 02/01/2023] Open
Abstract
Background The mechanisms of lipid raft regulation by microRNAs in breast cancer are not fully understood. This work focused on the evaluation and identification of miR-3908, which may be a potential biomarker related to the migration of breast cancer cells, and elucidates lipid-raft-regulating cell migration in breast cancer. Methods To confirm the prediction that miR-3908 is matched with AdipoR1, we used 3’-UTR luciferase activity of AdipoR1 to assess this. Then, human breast cancer cell line MCF-7 was cultured in the absence or presence of the mimics or inhibitors of miR-3908, after which the biological functions of MCF-7 cells were analyzed. The protein expression of AdipoR1, AMPK, and SIRT-1 were examined. The interaction between AdipoR1 and Flotillin-1, or its effects on lipid rafts on regulating cell migration of MCF-7, was also investigated. Results AdipoR1 is a direct target of miR-3908. miR-3908 suppresses the expression of AdipoR1 and its downstream pathway genes, including AMPK, p-AMPK, and SIRT-1. miR-3908 enhances the process of breast cancer cell clonogenicity. miR-3908 exerts its effects on the proliferation and migration of MCF-7 cells, which are mediated by lipid rafts regulating AdipoR1’s ability to bind Flotillin-1. Conclusions miR-3908 is a crucial mediator of the migration process in breast cancer cells. Lipid rafts regulate the interactions between AdipoR1 and Flotillin-1 and then the migration process associated with miR-3908 in MCF-7 cells. Our findings suggest that targeting miR-3908 and the lipid raft, may be a promising strategy for the treatment and prevention of breast cancer.
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Affiliation(s)
- Yuan Li
- Department of Obstetrics and Gynecology, Beijing Obstetrics and Gynecology Hospital, Capital Medical University, Beijing, 100048, China
| | - Fei Shan
- Department of Cardiac Surgery, Affiliated Hospital of Medical College of Yan'an University, Yan'an, Shanxi, 716000, China
| | - Jinglong Chen
- Department of Oncology, Beijing Ditan Hospital, Capital Medical University, Beijing, 100015, China.
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Algayadh IG, Dronamraju V, Sylvester PW. Role of Rac1/WAVE2 Signaling in Mediating the Inhibitory Effects of γ-Tocotrienol on Mammary Cancer Cell Migration and Invasion. Biol Pharm Bull 2017; 39:1974-1982. [PMID: 27904039 DOI: 10.1248/bpb.b16-00461] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
The majority of breast cancer deaths result from the progression of this disease to a metastatic phenotype. Rac1 and Cdc42 are Rho family members that together with their downstream effectors, Wiskott-Aldrich Syndrome protein-family verprolin-homologous protein 2 (WAVE2) and Arp2/3, play an important role in cytoskeletal reorganization and the formation of membrane protrusions that promote cancer cell migration and invasion. γ-Tocotrienol, is a natural isoform within the vitamin E family of compounds that inhibits breast cancer cell growth and progression by suppressing various signaling pathways involved in mitogenic signaling and metastatic progression. Studies were conducted to examine the effects of γ-tocotrienol on Rac1/WAVE2 signaling dependent migration and invasion in highly metastatic mouse +SA and human MDA-MB-231 mammary cancer cells. Exposure to γ-tocotrienol resulted in a dose-responsive decrease in Rac1/WAVE2 signaling as characterized by a suppression in the levels of Rac1/Cdc42, phospho-Rac1/Cdc42, WAVE2, Arp2, and Arp3 expression. Additional studies also demonstrated that similar treatment with γ-tocotrienol resulted in a significant reduction in tumor cell migration and invasion. Taken together, these findings indicate that γ-tocotrienol treatment effectively inhibits Rac1/WAVE2 signaling and reduces metastatic phenotypic expression in mammary cancer cells, suggesting that γ-tocotrienol may provide some benefit as a novel therapeutic approach in the treatment of metastatic breast cancer.
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Abu-Fayyad A, Nazzal S. Synthesis, characterization, and in-vitro antitumor activity of the polyethylene glycol (350 and 1000) succinate derivatives of the tocopherol and tocotrienol isomers of Vitamin E. Int J Pharm 2017; 519:145-156. [PMID: 28093324 DOI: 10.1016/j.ijpharm.2017.01.020] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2016] [Revised: 01/05/2017] [Accepted: 01/10/2017] [Indexed: 02/06/2023]
Abstract
Vitamin E refers to a group of saturated tocopherol (T) isomers and the biologically more active unsaturated tocotrienol (T3) isomers. PEGylated α-tocopherol, commercially known as Vitamin E TPGS, has been used as an emulsifier and therapeutic agent for children with vitamin E deficiency. Limited information, however, is available about the PEG conjugates of the tocotrienol isomers of vitamin E. The current work was therefore undertaken to synthesize and characterize the water soluble polyethylene glycol (PEG 350 and 1000) derivatives of T and T3. Yield and the identity of the synthesized products were confirmed by 1H NMR, mass spectroscopy, HPLC, and thermal analysis. The self-assembly of the PEGylated vitamin E isomers in water at critical micelle concentrations (CMC) was further confirmed by size, zeta, and Cryo-TEM image analysis. While stable at pH 7.4, PEG conjugates were found to rapidly hydrolyze at pH 1.2. Our data showed that PEGylated T3 isomers were significantly more active as inhibitors for P-glycoprotein than PEGylated T. The in vitro cytotoxicity of the conjugates was also tested against a large panel of normal and tumorigenic cells. Of the conjugates, γ-T3PGS 1000 and δ-T3PGS 1000 were found to have the least toxicity against non-tumorigenic breast and pancreatic cell lines, which may be advantageous for its use as functional excipients in drug delivery. The results from the current work have demonstrated the feasibility of synthesizing PEGylated conjugates of vitamin E isomers and highlighted the potential use of these conjugates in drug delivery as functional and safer excipients especially for γ-T3PGS 1000 and δ-T3PGS 1000 conjugate.
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Affiliation(s)
- Ahmed Abu-Fayyad
- College of Health and Pharmaceutical Sciences, School of Pharmacy, University of Louisiana at Monroe, Monroe, LA, USA
| | - Sami Nazzal
- College of Health and Pharmaceutical Sciences, School of Pharmacy, University of Louisiana at Monroe, Monroe, LA, USA; College of Pharmacy, Taipei Medical University, Taipei, Taiwan.
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35
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Synergistic Anticancer Effect of Tocotrienol Combined with Chemotherapeutic Agents or Dietary Components: A Review. Int J Mol Sci 2016; 17:ijms17101605. [PMID: 27669218 PMCID: PMC5085638 DOI: 10.3390/ijms17101605] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2016] [Revised: 08/29/2016] [Accepted: 09/14/2016] [Indexed: 12/20/2022] Open
Abstract
Tocotrienol (T3), unsaturated vitamin E, is gaining a lot of attention owing to its potent anticancer effect, since its efficacy is much greater than that of tocopherol (Toc). Various factors are known to be involved in such antitumor action, including cell cycle arrest, apoptosis induction, antiangiogenesis, anti-metastasis, nuclear factor-κB suppression, and telomerase inhibition. Owing to a difference in the affinity of T3 and Toc for the α-tocopherol transfer protein, the bioavailability of orally ingested T3 is lower than that of Toc. Furthermore, cellular uptake of T3 is interrupted by coadministration of α-Toc in vitro and in vivo. Based on this, several studies are in progress to screen for molecules that can synergize with T3 in order to augment its potency. Combinations of T3 with chemotherapeutic drugs (e.g., statins, celecoxib, and gefitinib) or dietary components (e.g., polyphenols, sesamin, and ferulic acid) exhibit synergistic actions on cancer cell growth and signaling pathways. In this review, we summarize the current status of synergistic effects of T3 and an array of agents on cancer cells, and discuss their molecular mechanisms of action. These combination strategies would encourage further investigation and application in cancer prevention and therapy.
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Ahmed RA, Alawin OA, Sylvester PW. γ-Tocotrienol reversal of epithelial-to-mesenchymal transition in human breast cancer cells is associated with inhibition of canonical Wnt signalling. Cell Prolif 2016; 49:460-70. [PMID: 27323693 DOI: 10.1111/cpr.12270] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2016] [Accepted: 05/10/2016] [Indexed: 12/15/2022] Open
Abstract
OBJECTIVES Frizzled-7 (FZD7) receptor-dependent activation of the canonical Wnt/β-catenin pathway plays a crucial role in epithelial-to-mesenchymal transition (EMT) and breast cancer metastasis. FZD7 and its co-receptor, low-density lipoprotein receptor-related protein 6 (LRP6), are highly expressed in MDA-MB-231 and T-47D breast cancer cells, and endogenous ligands for FZD7 include Wnt3a and Wnt5a/b. γ-Tocotrienol, a natural isoform of vitamin E, inhibits human breast cancer cell proliferation and EMT. Here, studies have been conducted to investigate the role of the canonical Wnt pathway in mediating inhibitory effects of γ-tocotrienol on EMT in human breast cancer cells. MATERIALS AND METHODS MDA-MB-231, T-47D and MCF-10A cells were maintained in serum-free defined media containing selected doses of γ-tocotrienol. Cell viability was determined using the MTT colorimetric assay, Western blot analysis was used to measure protein expression and the wound-healing assay was employed to study cell mobility and migration. Immunohistochemical fluorescence staining visualized expression and localization of EMT cell markers. RESULTS γ-Tocotrienol was found to induce dose-responsive inhibition of MDA-MB-231 and T-47D cell growth at doses that had no effect on immortalized normal MCF-10A mammary epithelial cells. These growth inhibitory effects were associated with suppression in canonical Wnt signalling, reversal of EMT and significant reduction in breast cancer cell motility. CONCLUSIONS γ-Tocotrienol suppression of metastatic breast cancer cell proliferation and EMT was associated with suppression of the canonical Wnt/β-catenin signalling pathway.
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Affiliation(s)
- R A Ahmed
- School of Pharmacy, University of Louisiana at Monroe, Monroe, LA, USA
| | - O A Alawin
- School of Pharmacy, University of Louisiana at Monroe, Monroe, LA, USA
| | - P W Sylvester
- School of Pharmacy, University of Louisiana at Monroe, Monroe, LA, USA
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