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Katana Z, Sianidou K, Kaiopoulos G, Deligianni F, Tsetsakos S, Kouvatsi A, Sakellari I, Kritis A, Touraki M, Sotiropoulos D, Xagorari A. Molecular and biochemical evaluation of oxidative effects of cord blood CD34+ MPs on hematopoietic cells. Blood Cells Mol Dis 2024; 108:102871. [PMID: 39013336 DOI: 10.1016/j.bcmd.2024.102871] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2024] [Revised: 06/22/2024] [Accepted: 06/24/2024] [Indexed: 07/18/2024]
Abstract
A graft source for allogeneic hematopoietic stem cell transplantation is umbilical cord blood, which contains umbilical cord blood mononuclear cells (MNCs and mesenchymal stem cells, both an excellent source of extracellular microparticles (MPs). MPs act as cell communication mediators, which are implicated in reactive oxygen species formation or detoxification depending on their origin. Oxidative stress plays a crucial role in both the development of cancer and its treatment by triggering apoptotic mechanisms, in which CD34+ cells are implicated. The aim of this work is to investigate the oxidative stress status and the apoptosis of HL-60 and mononuclear cells isolated from umbilical cord blood (UCB) following a 24- and 48-hour exposure to CD34 + microparticles (CD34 + MPs). The activity of superoxide dismutase, glutathione reductase, and glutathione S-transferase, as well as lipid peroxidation in the cells, were employed as oxidative stress markers. A 24- and 48-hour exposure of leukemic and mononuclear cells to CD34 + -MPs resulted in a statistically significant increase in the antioxidant activity and lipid peroxidation in both cells types. Moreover, CD34 + MPs affect the expression of BCL2 and FAS and related proteins and downregulate the hematopoietic differentiation program in both HL-60 and mononuclear cells. Our results indicate that MPs through activation of antioxidant enzymes in both homozygous and nonhomozygous cells might serve as a means for graft optimization and enhancement.
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Affiliation(s)
- Zoi Katana
- Public Cord Blood Bank, Hematology Department, G.H.G.Papanicolaou, Thessaloniki, Greece; Medical School, Aristotle University of Thessaloniki, Thessaloniki, Greece
| | - Kyriaki Sianidou
- Public Cord Blood Bank, Hematology Department, G.H.G.Papanicolaou, Thessaloniki, Greece; Department of Genetics, Development and Molecular Biology, School of Biology, Aristotle University of Thessaloniki, Thessaloniki, Greece
| | - Gregory Kaiopoulos
- Public Cord Blood Bank, Hematology Department, G.H.G.Papanicolaou, Thessaloniki, Greece; Department of Genetics, Development and Molecular Biology, School of Biology, Aristotle University of Thessaloniki, Thessaloniki, Greece
| | - Fani Deligianni
- Public Cord Blood Bank, Hematology Department, G.H.G.Papanicolaou, Thessaloniki, Greece; Department of Genetics, Development and Molecular Biology, School of Biology, Aristotle University of Thessaloniki, Thessaloniki, Greece
| | - Sarantis Tsetsakos
- Public Cord Blood Bank, Hematology Department, G.H.G.Papanicolaou, Thessaloniki, Greece
| | - Anastasia Kouvatsi
- Department of Genetics, Development and Molecular Biology, School of Biology, Aristotle University of Thessaloniki, Thessaloniki, Greece
| | - Ioanna Sakellari
- Public Cord Blood Bank, Hematology Department, G.H.G.Papanicolaou, Thessaloniki, Greece
| | - Aristeidis Kritis
- Medical School, Aristotle University of Thessaloniki, Thessaloniki, Greece
| | - Maria Touraki
- Department of Genetics, Development and Molecular Biology, School of Biology, Aristotle University of Thessaloniki, Thessaloniki, Greece
| | - Damianos Sotiropoulos
- Public Cord Blood Bank, Hematology Department, G.H.G.Papanicolaou, Thessaloniki, Greece
| | - Angeliki Xagorari
- Public Cord Blood Bank, Hematology Department, G.H.G.Papanicolaou, Thessaloniki, Greece.
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Mostashari P, Mousavi Khaneghah A. Sesame Seeds: A Nutrient-Rich Superfood. Foods 2024; 13:1153. [PMID: 38672826 PMCID: PMC11049391 DOI: 10.3390/foods13081153] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/24/2023] [Revised: 03/23/2024] [Accepted: 04/08/2024] [Indexed: 04/28/2024] Open
Abstract
Sesame seeds (Sesamum indicum L.) have been cultivated for thousands of years and have long been celebrated for their culinary versatility. Beyond their delightful nutty flavor and crunchy texture, sesame seeds have also gained recognition for their remarkable health benefits. This article provides an in-depth exploration of the numerous ways in which sesame seeds contribute to overall well-being. Sesame seeds are a powerhouse of phytochemicals, including lignans derivatives, tocopherol isomers, phytosterols, and phytates, which have been associated with various health benefits, including the preservation of cardiovascular health and the prevention of cancer, neurodegenerative disorders, and brain dysfunction. These compounds have also been substantiated for their efficacy in cholesterol management. Their potential as a natural source of beneficial plant compounds is presented in detail. The article further explores the positive impact of sesame seeds on reducing the risk of chronic diseases thanks to their rich polyunsaturated fatty acids content. Nevertheless, it is crucial to remember the significance of maintaining a well-rounded diet to achieve the proper balance of n-3 and n-6 polyunsaturated fatty acids, a balance lacking in sesame seed oil. The significance of bioactive polypeptides derived from sesame seeds is also discussed, shedding light on their applications as nutritional supplements, nutraceuticals, and functional ingredients. Recognizing the pivotal role of processing methods on sesame seeds, this review discusses how these methods can influence bioactive compounds. While roasting the seeds enhances the antioxidant properties of the oil extract, certain processing techniques may reduce phenolic compounds.
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Affiliation(s)
- Parisa Mostashari
- Department of Food Science and Technology, Faculty of Nutrition Sciences and Food Technology, National Nutrition and Food Technology Research Institute, Shahid Beheshti University of Medical Sciences, Tehran 1981619573, Iran;
- Department of Food Science and Technology, Faculty of Pharmacy, Tehran Medical Sciences, Islamic Azad University, Tehran 1941933111, Iran
| | - Amin Mousavi Khaneghah
- Faculty of Biotechnologies (BioTech), ITMO University, 9 Lomonosova Street, Saint Petersburg 191002, Russia
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Manikanta K, Paul M, Sandesha VD, Mahalingam SS, Ramesh TN, Harishkumar K, Koundinya SS, Naveen S, Kemparaju K, Girish KS. Oxidative Stress-Induced Platelet Apoptosis/Activation: Alleviation by Purified Curcumin via ASK1-JNK/p-38 Pathway. BIOCHEMISTRY. BIOKHIMIIA 2024; 89:417-430. [PMID: 38648762 DOI: 10.1134/s0006297924030039] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/26/2023] [Revised: 11/26/2023] [Accepted: 01/29/2024] [Indexed: 04/25/2024]
Abstract
Platelets are known for their indispensable role in hemostasis and thrombosis. However, alteration in platelet function due to oxidative stress is known to mediate various health complications, including cardiovascular diseases and other health complications. To date, several synthetic molecules have displayed antiplatelet activity; however, their uses are associated with bleeding and other adverse effects. The commercially available curcumin is generally a mixture of three curcuminoids: curcumin, demethoxycurcumin, and bisdemethoxycurcumin. Although crude curcumin is known to inhibit platelet aggregation, the effect of purified curcumin on platelet apoptosis, activation, and aggregation remains unclear. Therefore, in this study, curcumin was purified from a crude curcumin mixture and the effects of this preparation on the oxidative stress-induced platelet apoptosis and activation was evaluated. 2,2'-Azobis(2-methylpropionamidine) dihydrochloride (AAPH) compound was used as an inducer of oxidative stress. Purified curcumin restored AAPH-induced platelet apoptotic markers like reactive oxygen species, intracellular calcium level, mitochondrial membrane potential, cardiolipin peroxidation, cytochrome c release from mitochondria to the cytosol, and phosphatidyl serine externalization. Further, it inhibited the agonist-induced platelet activation and aggregation, demonstrating its antiplatelet activity. Western blot analysis confirms protective effect of the purified curcumin against oxidative stress-induced platelet apoptosis and activation via downregulation of MAPKs protein activation, including ASK1, JNK, and p-38. Together, these results suggest that the purified curcumin could be a potential therapeutic bioactive molecule to treat the oxidative stress-induced platelet activation, apoptosis, and associated complications.
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Affiliation(s)
- Kurnegala Manikanta
- Department of Studies in Biochemistry, University of Mysore, Manasagangothri, Mysuru, 570006, India
| | - Manoj Paul
- Department of Studies in Biochemistry, University of Mysore, Manasagangothri, Mysuru, 570006, India
| | | | - Shanmuga S Mahalingam
- Department of Biological Sciences, School of Dental Medicine, Case Western Reserve University, Cleveland, OH 44106, USA
| | - Thimmasandra Narayan Ramesh
- Department of Studies and Research in Chemistry, University College of Science, Tumkur University, Tumakuru, 572103, India
| | | | - Shashank S Koundinya
- All India Institute of Medical Science, Sri Aurobindo Marg, Ansari Nagar, East, New Delhi, 110029, India
| | - Shivanna Naveen
- Applied Nutrition Discipline, Defense Food Research Laboratory, Mysuru, 570011, India
| | - Kempaiah Kemparaju
- Department of Studies in Biochemistry, University of Mysore, Manasagangothri, Mysuru, 570006, India.
| | - Kesturu S Girish
- Department of Studies and Research in Biochemistry, Tumkur University, Tumakuru, 572103, India.
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Ma X, Hu X, Zhu Y, Jin H, Hu G, Ding L, Ning S. Sesamol inhibits proliferation, migration and invasion of triple negative breast cancer via inactivating Wnt/β-catenin signaling. Biochem Pharmacol 2022; 206:115299. [PMID: 36244446 DOI: 10.1016/j.bcp.2022.115299] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2022] [Revised: 10/06/2022] [Accepted: 10/06/2022] [Indexed: 12/13/2022]
Abstract
Triple negative breast cancer (TNBC), a particularly aggressive breast cancer subtype without estrogen receptor (ER), progesterone receptor (PR) and human epidermal growth factor 2 (HER2) expression, possesses highly invasive capacity, uncontrolled proliferative phenotype and poor clinical prognosis. Sesamol enriched in sesame seeds has been widely reported as a metabolic modulator due to its anti-aging, anti-hepatotoxic and cardio-protective properties. In this study, we found that sesamol significantly inhibited proliferation, migration and invasion of TNBC cells via attenuating PCNA, CyclinD1 expression and reversion of epithelial-mesenchymal transition (EMT) characterized by increased epithelial marker E-cadherin and decreased mesenchymal marker N-cadherin, Vimentin, Snail expression. Moreover, sesamol inactivated Wnt/β-catenin signaling and Wnt agonist 1 AMBMP application reversed the inhibition of proliferation, migration and invasion of TNBC by sesamol administration. Subsequently, our data showed that sesamol induced Wnt inhibitory factor 1 (WIF1), an endogenous inhibitor of Wnt/β-catenin pathway, expression and WIF1 artificial knockdown abrogated the inactivation of Wnt/β-catenin signaling by sesamol exposure in TNBC cells. And we found that promoter region de-methylation was responsible for WIF1 up-regulation by sesamol administration. Finally, with the xenograft assay using nude mice, we also found that sesamol inhibited proliferation and metastasis of TNBC via WIF1-induced inactivation of Wnt/β-catenin signaling in vivo. Collectively, these data added novel understandings and evidences to the anti-cancer properties of sesamol.
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Affiliation(s)
- Xiao Ma
- Preventive Care Department, Jinhua Maternity and Child Health Care Hospital, Jinhua 321000, Zhejiang Province, China
| | - Xiaoling Hu
- Department of Clinical Nutrition, Affiliated Jinhua Hospital, Zhejiang University School of Medicine, Jinhua 321000, Zhejiang Province, China
| | - Yijia Zhu
- Department of Clinical Nutrition, Affiliated Jinhua Hospital, Zhejiang University School of Medicine, Jinhua 321000, Zhejiang Province, China
| | - Huixian Jin
- Department of Clinical Nutrition, Affiliated Jinhua Hospital, Zhejiang University School of Medicine, Jinhua 321000, Zhejiang Province, China
| | - Guifen Hu
- Department of Clinical Nutrition, Affiliated Jinhua Hospital, Zhejiang University School of Medicine, Jinhua 321000, Zhejiang Province, China
| | - Linchao Ding
- Department of Scientific Research, Affiliated Jinhua Hospital, Zhejiang University School of Medicine, Jinhua 321000, Zhejiang Province, China.
| | - Shilong Ning
- Department of Clinical Nutrition, Affiliated Jinhua Hospital, Zhejiang University School of Medicine, Jinhua 321000, Zhejiang Province, China.
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Curcumin protects retinal neuronal cells against oxidative stress-induced damage by regulating mitochondrial dynamics. Exp Eye Res 2022; 224:109239. [PMID: 36067824 DOI: 10.1016/j.exer.2022.109239] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2022] [Revised: 08/17/2022] [Accepted: 08/29/2022] [Indexed: 11/22/2022]
Abstract
Oxidative stress plays a crucial role in the damage of retinal neuronal cells. Curcumin, the phytocompound, has anti-inflammatory and antioxidative properties. It was shown that curcumin exerted a beneficial effect on retinal neuronal cell survival. However, the role of mitochondrial dynamics in curcumin-mediated protective effect on retinal neuronal cells remains to be elucidated. Here, H2O2 was used to mimic the oxidative stress in retinal neuronal R28 cells. Drp1 and Mfn2 are key regulators of mitochondrial fission and fusion. 100 μM of H2O2 significantly increased the cleavage of caspase-3 and Drp1 expression, but downregulated the expression of Mfn2. Pretreatment with 5 μM curcumin effectively alleviated H2O2-induced alterations in the expression of Drp1 and Mfn2 and mitochondrial fission in R28 cells. In addition, curcumin and Drp1 knockdown prevented H2O2-induced intracellular ROS increment and mitochondrial membrane potential disruption. On the contrary, knockdown of Mfn2 diminished curcumin-mediated protection against ROS increment and mitochondrial membrane potential disruption after H2O2. Moreover, curcumin protected R28 cells against H2O2-induced PINK1 expression, mitophagy, caspase-3 cleavage and apoptosis. Knockdown of Mfn2 significantly alleviated the protective effect of curcumin on R28 cells after H2O2. Taken together, our data indicate that curcumin protects against oxidative stress-induced injury in retinal neuronal cells by promoting mitochondrial fusion.
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Ezhilarasan D, Ali D, Varghese R. Sesamol induces cytotoxicity via mitochondrial apoptosis in SCC-25 cells. Hum Exp Toxicol 2021; 40:S423-S433. [PMID: 34586880 DOI: 10.1177/09603271211047926] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
Sesamol is the main constituent of sesame seed oil and is obtained from Sesamum indicum. Oral squamous cell carcinoma (OSCC) is one of the most common neoplasms affecting the oral cavity. In this study, we investigated the cytotoxic potentials of sesamol on human oral squamous carcinoma (SCC-25) cells. Human oral squamous carcinoma cells were treated with different concentrations (62.5, 125, and 250 μM/mL) of sesamol for 24 h. Cytotoxicity was analyzed by 3- (4, 5- dimethylthiazol -2- yl) -2, 5-diphenyltetrazolium bromide (MTT) assay. Intracellular reactive oxygen species (ROS) expression was investigated by dichloro-dihydro-fluorescein diacetate assay. Apoptosis-related morphology was analyzed by acridine orange/ethidium bromide staining. Caspase-9 expression was analyzed by confocal microscopic double immunofluorescence staining. Mitochondrial apoptosis-related markers are analyzed using qPCR. Sesamol treatment caused a significant cytotoxic effect in OSCC cells. Sesamol-induced cytotoxic effect was associated with intracellular ROS generation. Sesamol treatments induced a significant increase in the early and late apoptotic cells. This treatment also induced caspase-9 expression in OSCC cells. Sesamol treatments caused downregulation of Harvey rat sarcoma viral oncogene homolog (HRAS) expression at protein and gene levels. Sesamol treatment modulates intrinsic apoptotic marker gene expression in OSCC cells. Overall results confirm the anti-cancer potential of sesamol and it seems to be a promising candidate for OSCC.
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Affiliation(s)
- D Ezhilarasan
- Department of Pharmacology, The Blue Laboratory, Molecular Medicine and Toxicology Division, Saveetha Dental College and Hospitals, 194347Saveetha Institute of Medical and Technical Sciences, Chennai, India
| | - D Ali
- Department of Zoology, College of Science, King Saud University, Riyadh, Saudi Arabia
| | - R Varghese
- Department of Microbiology, Faculty of Science and Informatics, 37442University of Szeged, Szeged, Hungary
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Vishalakshi GJ, Hemshekhar M, Sandesha VD, Prashanth KS, Jagadish S, Paul M, Kemparaju K, Girish KS. Bisphenol AF elevates procoagulant platelets by inducing necroptosis via RIPK1-inflammasome axis. Toxicology 2021; 454:152742. [PMID: 33662508 DOI: 10.1016/j.tox.2021.152742] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2020] [Revised: 01/30/2021] [Accepted: 02/26/2021] [Indexed: 12/11/2022]
Abstract
Bisphenol AF, an analogue of Bisphenol A, is an important raw material used in the production of plastic and rubber substances like plastic bottles and containers, toys, and medical supplies. Increased contamination of air, water, dust, and food with BPA/BPAF, poses an enormous threat to humans, globally. BPAF/BPA are endocrine-disrupting chemicals that mimic estrogen hormone, thus increasing the risks of various metabolic and chronic disorders. Exposure of human blood cells to BPA/BPAF induces oxidative stress and genotoxicity. However, its effects on platelets, which play central roles in hemostasis and thrombosis, are not well-documented. In this study, we demonstrate that BPAF induces RIPK1-inflammasome axis-mediated necroptosis in platelets, increasing procoagulant platelet levels in vivo and in vitro. We also show that BPAF-induced rise in procoagulant platelets worsens pulmonary thromboembolism in vivo. The elevated procoagulant platelets are shown to increase platelet-neutrophil/monocyte aggregates that mediate pathogenesis of CVD, thrombosis, and chronic inflammatory diseases. Our results demonstrate the toxic effects of BPAF on platelets and how it propagates the clinical complications by elevating procoagulant platelet numbers. Altogether, our study sends a cautionary message against extensive use of BPAF in the plastic and rubber industries, resulting in frequent human exposure to it, thus endangering platelet functions.
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Affiliation(s)
- Gopalapura J Vishalakshi
- Department of Studies in Biochemistry, University of Mysore, Manasagangotri, Mysuru, 570 006, India
| | - Mahadevappa Hemshekhar
- Department of Studies in Biochemistry, University of Mysore, Manasagangotri, Mysuru, 570 006, India
| | | | - Kunthurumole S Prashanth
- Department of Studies in Biochemistry, University of Mysore, Manasagangotri, Mysuru, 570 006, India
| | - Swamy Jagadish
- Department of Studies in Biochemistry, University of Mysore, Manasagangotri, Mysuru, 570 006, India
| | - Manoj Paul
- Department of Studies in Biochemistry, University of Mysore, Manasagangotri, Mysuru, 570 006, India
| | - Kempaiah Kemparaju
- Department of Studies in Biochemistry, University of Mysore, Manasagangotri, Mysuru, 570 006, India.
| | - Kesturu S Girish
- Department of Studies in Biochemistry, University of Mysore, Manasagangotri, Mysuru, 570 006, India; Department of Studies and Research in Biochemistry, Tumkur University, Tumakuru, 572 103, India.
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Li L, Fu J, Wang X, Chen Q, Zhang W, Cao Y, Ran H. Biomimetic "Nanoplatelets" as a Targeted Drug Delivery Platform for Breast Cancer Theranostics. ACS APPLIED MATERIALS & INTERFACES 2021; 13:3605-3621. [PMID: 33449625 DOI: 10.1021/acsami.0c19259] [Citation(s) in RCA: 25] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
Breast cancer is a major threat to health and lives of females. Biomimetic nanotechnology brought brighter hope for early diagnosis and treatment of breast cancer. Here, we proposed a platelet (PLT) membrane-derived strategy for enhanced photoacoustic (PA)/ultrasonic (US)/fluorescence (FL) multimodal imaging and augmented synergistic photothermal/chemotherapeutic efficacy in tumor cells. A PA imaging contrast and photothermal agent, nanocarbons (CNs), a chemotherapeutic and FL material, doxorubicin (DOX), and perfluoropentane (PFP) were coencapsulated into the poly(lactic-co-glycolic) acid (PLGA) skeletons. Then, the PLT membranes were coated onto the PLGA NPs, which were named as "nanoplatelets" (DOX-PFP-CNs@PLGA/PM NPs). The "nanoplatelets", which conserved the structural advantages and inherent properties of PLTs, could not only escape from phagocytosis of macrophages but also actively targeted tumor cells by the way of antigen-antibody interactions between P-selectin on the PM and CD44 receptors of the tumor cells. With CNs and DOX loaded in, these "nanoplatelets" could serve as an excellent contrast agent for PA/FL imaging. Under laser irradiation, the "nanoplatelets" could turn light energy into heat energy. The laser-triggered photothermal effect, on the one hand, could ablate the tumor cells immediately, and on the other hand, could initiate the optical droplet vaporization of PFP, which subsequently enhanced US imaging and promoted the discharge of encapsulated DOX from the "nanoplatelets" for remarkably strengthening photothermal therapeutic power in turn. In this work, as compared with the bare drug-loaded nanoparticles, the "nanoplatelets" exhibited much more accumulation in the tumor cells, demonstrating superior multimodal imaging capability and preferable synergistic therapeutic performance. In conclusion, the "nanoplatelets" could serve as contrast agents for US imaging and PA imaging to guide the therapy. What is more, the bioinspired PLT-derived, targeted, and nontoxic "nanoplatelets", which were exploited for multimodal PA/US/FL imaging-guided synergistic photothermal/chemo therapy, will be of great value to breast cancer theranostics in the days to come.
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Affiliation(s)
- Lin Li
- Chongqing Key Laboratory of Ultrasound Molecular Imaging, Ultrasound Department of the Second Affiliated Hospital of Chongqing Medical University, Chongqing 400010, P. R. China
| | - Jian Fu
- Vascular Surgery Department of the Second Affiliated Hospital of Chongqing Medical University, Chongqing 400010, P. R. China
| | - Xingyue Wang
- Chongqing Key Laboratory of Ultrasound Molecular Imaging, Ultrasound Department of the Second Affiliated Hospital of Chongqing Medical University, Chongqing 400010, P. R. China
| | - Qiaoqi Chen
- Chongqing Key Laboratory of Ultrasound Molecular Imaging, Ultrasound Department of the Second Affiliated Hospital of Chongqing Medical University, Chongqing 400010, P. R. China
| | - Wei Zhang
- Chongqing Key Laboratory of Ultrasound Molecular Imaging, Ultrasound Department of the Second Affiliated Hospital of Chongqing Medical University, Chongqing 400010, P. R. China
| | - Yang Cao
- Chongqing Key Laboratory of Ultrasound Molecular Imaging, Ultrasound Department of the Second Affiliated Hospital of Chongqing Medical University, Chongqing 400010, P. R. China
| | - Haitao Ran
- Chongqing Key Laboratory of Ultrasound Molecular Imaging, Ultrasound Department of the Second Affiliated Hospital of Chongqing Medical University, Chongqing 400010, P. R. China
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Mitoquinone (MitoQ) Inhibits Platelet Activation Steps by Reducing ROS Levels. Int J Mol Sci 2020; 21:ijms21176192. [PMID: 32867213 PMCID: PMC7503844 DOI: 10.3390/ijms21176192] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2020] [Revised: 08/18/2020] [Accepted: 08/19/2020] [Indexed: 12/13/2022] Open
Abstract
Platelet activation plays a key role in cardiovascular diseases. The generation of mitochondrial reactive oxygen species (ROS) has been described as a critical step required for platelet activation. For this reason, it is necessary to find new molecules with antiplatelet activity and identify their mechanisms of action. Mitoquinone (MitoQ) is a mitochondria-targeted antioxidant that reduces mitochondrial overproduction of ROS. In this work, the antiplatelet effect of MitoQ through platelet adhesion and spreading, secretion, and aggregation was evaluated. Thus MitoQ, in a non-toxic effect, decreased platelet adhesion and spreading on collagen surface, and expression of P-selectin and CD63, and inhibited platelet aggregation induced by collagen, convulxin, thrombin receptor activator peptide-6 (TRAP-6), and phorbol 12-myristate 13-acetate (PMA). As an antiplatelet mechanism, we showed that MitoQ produced mitochondrial depolarization and decreased ATP secretion. Additionally, in platelets stimulated with antimycin A and collagen MitoQ significantly decreased ROS production. Our findings showed, for the first time, an antiplatelet effect of MitoQ that is probably associated with its mitochondrial antioxidant effect.
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Systematic identification of genetic systems associated with phenotypes in patients with rare genomic copy number variations. Hum Genet 2020; 140:457-475. [PMID: 32778951 DOI: 10.1007/s00439-020-02214-7] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2020] [Accepted: 07/30/2020] [Indexed: 01/02/2023]
Abstract
Copy number variation (CNV) related disorders tend to show complex phenotypic profiles that do not match known diseases. This makes it difficult to ascertain their underlying molecular basis. A potential solution is to compare the affected genomic regions for multiple patients that share a pathological phenotype, looking for commonalities. Here, we present a novel approach to associate phenotypes with functional systems, in terms of GO categories and KEGG and Reactome pathways, based on patient data. The approach uses genomic and phenomic data from the same patients, finding shared genomic regions between patients with similar phenotypes. These regions are mapped to genes to find associated functional systems. We applied the approach to analyse patients in the DECIPHER database with de novo CNVs, finding functional systems associated with most phenotypes, often due to mutations affecting related genes in the same genomic region. Manual inspection of the ten top-scoring phenotypes found multiple FunSys connections supported by the previous studies for seven of them. The workflow also produces reports focussed on the genes and FunSys connected to the different phenotypes, alongside patient-specific reports, which give details of the associated genes and FunSys for each individual in the cohort. These can be run in "confidential" mode, preserving patient confidentiality. The workflow presented here can be used to associate phenotypes with functional systems using data at the level of a whole cohort of patients, identifying important connections that could not be found when considering them individually. The full workflow is available for download, enabling it to be run on any patient cohort for which phenotypic and CNV data are available.
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Bosebabu B, Cheruku SP, Chamallamudi MR, Nampoothiri M, Shenoy RR, Nandakumar K, Parihar VK, Kumar N. An Appraisal of Current Pharmacological Perspectives of Sesamol: A Review. Mini Rev Med Chem 2020; 20:988-1000. [DOI: 10.2174/1389557520666200313120419] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2019] [Revised: 12/20/2019] [Accepted: 02/06/2020] [Indexed: 12/16/2022]
Abstract
Sesame (Sesamum indicum L.) seeds have been authenticated for its medicinal value in both
Chinese and Indian systems of medicine. Its numerous potential nutritional benefits are attributed to its
main bioactive constituents, sesamol. As a result of those studies, several molecular mechanisms are
emerging describing the pleiotropic biological effects of sesamol. This review summarized the most
interesting in vitro and in vivo studies on the biological effects of sesamol. The present work summarises
data available from Pubmed and Scopus database. Several molecular mechanisms have been elucidated
describing the pleiotropic biological effects of sesamol. Its major therapeutic effects have been
elicited in managing oxidative and inflammatory conditions, metabolic syndrome and mood disorders.
Further, compelling evidence reflected the ability of sesamol in inhibiting proliferation of the inflammatory
cell, prevention of invasion and angiogenesis via affecting multiple molecular targets and
downstream mechanisms. Sesamol is a safe, non‐toxic chemical that mediates anti‐inflammatory
effects by down‐regulating the transcription of inflammatory markers such as cytokines, redox status,
protein kinases, and enzymes that promote inflammation. In addition, sesamol also induces apoptosis
in cancer cells via mitochondrial and receptor‐mediated pathways, as well as activation of caspase cascades.
In the present review, several pharmacological effects of sesamol are summarised namely, antioxidant,
anti-cancer, neuroprotective, cardioprotective, anti-inflammatory, hypolipidemic, radioprotective,
anti-aging, anti-ulcer, anti-dementia, anti-depressant, antiplatelet, anticonvulsant, anti-anxiolytic,
wound healing, cosmetic (skin whitening), anti-microbial, matrix metalloproteinase (MMPs) inhibition,
hepatoprotective activity and other biological effects. Here we have summarized the proposed
mechanism behind these pharmacological effects.
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Affiliation(s)
- Bellamkonda Bosebabu
- Department of Pharmacology, Manipal College of Pharmaceutical Sciences, Manipal Academy of Higher Education, Manipal-576104, Karnataka, India
| | - Sri Pragnya Cheruku
- Department of Pharmacology, Manipal College of Pharmaceutical Sciences, Manipal Academy of Higher Education, Manipal-576104, Karnataka, India
| | - Mallikarjuna Rao Chamallamudi
- Department of Pharmacology, Manipal College of Pharmaceutical Sciences, Manipal Academy of Higher Education, Manipal-576104, Karnataka, India
| | - Madhavan Nampoothiri
- Department of Pharmacology, Manipal College of Pharmaceutical Sciences, Manipal Academy of Higher Education, Manipal-576104, Karnataka, India
| | - Rekha R. Shenoy
- Department of Pharmacology, Manipal College of Pharmaceutical Sciences, Manipal Academy of Higher Education, Manipal-576104, Karnataka, India
| | - Krishnadas Nandakumar
- Department of Pharmacology, Manipal College of Pharmaceutical Sciences, Manipal Academy of Higher Education, Manipal-576104, Karnataka, India
| | - Vipan K. Parihar
- Department of Radiation Oncology, University of California, Irvine, CA 92697- 2695, United States
| | - Nitesh Kumar
- Department of Pharmacology, Manipal College of Pharmaceutical Sciences, Manipal Academy of Higher Education, Manipal-576104, Karnataka, India
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12
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Majdalawieh AF, Mansour ZR. Sesamol, a major lignan in sesame seeds (Sesamum indicum): Anti-cancer properties and mechanisms of action. Eur J Pharmacol 2019; 855:75-89. [PMID: 31063773 DOI: 10.1016/j.ejphar.2019.05.008] [Citation(s) in RCA: 79] [Impact Index Per Article: 15.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2019] [Revised: 04/30/2019] [Accepted: 05/03/2019] [Indexed: 02/07/2023]
Abstract
Sesamol is a natural phenolic compound and a major lignan isolated from sesame seeds (Sesamum indicum) and sesame oil. The therapeutic potential of sesamol was investigated intensively, and there is compelling evidence that sesamol acts as a metabolic regulator that possesses antioxidant, anti-mutagenic, anti-hepatotoxic, anti-inflammatory, anti-aging, and chemopreventive properties. Various studies have reported that sesamol exerts potent anti-cancer effects. Herein, we provide a comprehensive review that summarizes the in vitro and in vivo anti-cancer activity of sesamol in several cancer cell lines and animal models. The protective role that sesamol plays against oxidative stress through its radical scavenging ability and lipid peroxidation lowering potential is analyzed. The ability of sesamol to regulate apoptosis and various stages of the cell cycle is also outlined. Moreover, the signaling pathways that sesamol seems to target to execute its antioxidant, anti-inflammatory, and pro-apoptotic/anti-proliferative roles are discussed. The signaling pathways that sesamol targets include the p53, MAPK, JNK, PI3K/AKT, TNFα, NF-κB, PPARγ, caspase-3, Nrf2, eNOS, and LOX pathways. The mechanisms of action that sesamol executes to deliver its anti-cancer effects are delineated. In sum, there is ample evidence suggesting that sesamol possesses potent anti-cancer properties in vitro and in vivo. A thorough understanding of the molecular targets of sesamol and the mechanisms of action underlying its anti-cancer effects is necessary for possible employment of sesamol as a chemotherapeutic agent in cancer prevention and therapy.
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Affiliation(s)
- Amin F Majdalawieh
- Department of Biology, Chemistry, and Environmental Sciences, College of Arts and Sciences, American University of Sharjah, Sharjah, United Arab Emirates.
| | - Zeenah R Mansour
- Department of Biology, Chemistry, and Environmental Sciences, College of Arts and Sciences, American University of Sharjah, Sharjah, United Arab Emirates
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13
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Vishalakshi GJ, NaveenKumar SK, Hemshekhar M, Mahendra M, Kemparaju K, Girish KS. Para-tertiary butyl catechol (PTBC), an industrial antioxidant induces human platelet apoptosis. ENVIRONMENTAL TOXICOLOGY 2019; 34:262-270. [PMID: 30461186 DOI: 10.1002/tox.22681] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/24/2018] [Revised: 10/25/2018] [Accepted: 11/03/2018] [Indexed: 06/09/2023]
Abstract
The catecholic derivative para-tertiary butyl catechol (PTBC) is a conventional antioxidant and polymerization inhibitor, which exhibits melanocytotoxic effects and contact dermatitis often leading to occupational leucoderma or vitiligo. Although numerous industrial workers will be in constant exposure to PTBC and its chances of getting entry into blood are most expected, its effect on blood components is still undisclosed. As platelets play a prominent role in dermatitis, inflammation, and immunity, in this study we have evaluated the effect of PTBC on human platelets in vitro. Exposure of platelets to PTBC showed increased reactive oxygen species (ROS), intracellular calcium, cardiolipin oxidation, mitochondrial permeability transition pore (MPTP) formation, activation of caspases, phosphatidylserine (PS) externalization and decreased mitochondrial membrane potential. In addition, there was a significant decrease in cellular glutathione level, increased γ-glutamyltransferase (GGT) activity and cell death. These findings demonstrate that PTBC could induce toxic effects on blood components, which is often ignored field of research. Since dermal exposure of humans to toxic chemicals covers an important issue in various industries, there is a need of such work to understand and update the long-term toxicities induced by PTBC usage in industrial sectors and public domain.
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Affiliation(s)
| | | | - Mahadevappa Hemshekhar
- Department of Internal Medicine, Manitoba Centre for Proteomics and Systems Biology, University of Manitoba, Winnipeg, Canada
| | | | - Kempaiah Kemparaju
- DOS in Biochemistry, University of Mysore, Manasagangothri, Mysuru, India
| | - Kesturu S Girish
- DOS in Biochemistry, University of Mysore, Manasagangothri, Mysuru, India
- Department of Studies and Research in Biochemistry, Tumkur University, Tumakuru, India
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14
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Li Z, Hu S, Cheng K. Platelets and their biomimetics for regenerative medicine and cancer therapies. J Mater Chem B 2018; 6:7354-7365. [PMID: 31372220 PMCID: PMC6675472 DOI: 10.1039/c8tb02301h] [Citation(s) in RCA: 58] [Impact Index Per Article: 9.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
Platelets, circulating blood cells derived from megakaryocytes, play a key role in various physical activities, including coagulation, hemostasis, the body's innate immune response, and cancer metastasis. By taking advantage of their key traits, researchers have developed strategies to exploit platelets and platelet-mimicking nanoassemblies to treat a number of conditions, including wounds, cancers, and bacterial infections. Compared to traditional polymer, lipsosome, and inorganic nanoparticles-based delivery systems, platelets and platelet-mimicking vehicles hold many advantages. Among these are their enhanced circulation time, their large volumes and surface areas for drug loading or conjugation, and their inherent ability to target some diseases. In this review, we will highlight the recent progress made in the development of disease-targeting platelets- and platelet-mimicking-vehicles as therapeutic platforms.
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Affiliation(s)
- Zhenhua Li
- Department of Molecular Biomedical Sciences and Comparative Medicine Institute, North Carolina State University, Raleigh, NC 27607, USA
- Joint Department of Biomedical Engineering, University of North Carolina at Chapel Hill and North Carolina State University, Raleigh, NC 27695, USA
| | - Shiqi Hu
- Department of Molecular Biomedical Sciences and Comparative Medicine Institute, North Carolina State University, Raleigh, NC 27607, USA
- Joint Department of Biomedical Engineering, University of North Carolina at Chapel Hill and North Carolina State University, Raleigh, NC 27695, USA
| | - Ke Cheng
- Department of Molecular Biomedical Sciences and Comparative Medicine Institute, North Carolina State University, Raleigh, NC 27607, USA
- Joint Department of Biomedical Engineering, University of North Carolina at Chapel Hill and North Carolina State University, Raleigh, NC 27695, USA
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15
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Memariani Z, Moeini R, Hamedi SS, Gorji N, Mozaffarpur SA. Medicinal plants with antithrombotic property in Persian medicine: a mechanistic review. J Thromb Thrombolysis 2018; 45:158-179. [PMID: 29124622 DOI: 10.1007/s11239-017-1580-3] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Thrombosis is one of the major causes of morbidity and mortality in a wide range of vessels diseases. Due to the high prevalence of thromboembolic disorders investigations are being carried out on new antithrombotic agents with limited adverse side effects in which herbal medicines are considered as alternative remedies. Persian medicine (PM) as a traditional medicine has a good potential for pharmacotherapy based on its own principles and development of drugs via investigating PM literature. In PM manuscripts there are some concepts that express the management of blood clots and antithrombotic properties. This study reviewed the pharmacological effects of medicinal plants mentioned in PM literature for blood clot management in light of current knowledge. Plants mentioned in PM for management of blood clot belong to 12 families in which Apiaceae, Lamiaceae and Compositae were the most repeated ones. Among the proposed plants Allium sativum, Rosmarinus officinalis, Boswellia serrata, Sesamum indicum, Matricaria chamomilla and Carthamus tinctorius have been the most researched plants in modern antithrombotic studies while for some plants such as Helichrysum stoechas, Dracocephalum kotschi, Carum carvi, Bunium persicum and Lagoecia cuminoides no evidence could be found. One of the interesting notes in clot management in PM texts was introducing the target organ for some of the recommended herbs like Carum carvi and Bunium persicum for dissolving blood clot in stomach and Commiphora mukul for thrombosed hemorrhoid. It seems review of PM recommendations can help to design future researches for antithrombotic drugs discovering with more effectiveness and safety.
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Affiliation(s)
- Zahra Memariani
- Traditional Medicine and History of Medical Sciences Research Center, Health Research Institute, Babol University of Medical Sciences, Babol, Islamic Republic of Iran.,School of Traditional Medicine, Babol University of Medical Sciences, Babol, Islamic Republic of Iran
| | - Reihaneh Moeini
- Traditional Medicine and History of Medical Sciences Research Center, Health Research Institute, Babol University of Medical Sciences, Babol, Islamic Republic of Iran.,School of Traditional Medicine, Babol University of Medical Sciences, Babol, Islamic Republic of Iran
| | - Shokooh Sadat Hamedi
- School of Traditional Medicine, Mashhad University of Medical Sciences, Mashhad, Islamic Republic of Iran
| | - Narjes Gorji
- Traditional Medicine and History of Medical Sciences Research Center, Health Research Institute, Babol University of Medical Sciences, Babol, Islamic Republic of Iran. .,School of Traditional Medicine, Babol University of Medical Sciences, Babol, Islamic Republic of Iran.
| | - Seyyed Ali Mozaffarpur
- Traditional Medicine and History of Medical Sciences Research Center, Health Research Institute, Babol University of Medical Sciences, Babol, Islamic Republic of Iran.,School of Traditional Medicine, Babol University of Medical Sciences, Babol, Islamic Republic of Iran
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16
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De Silva E, Kim H. Drug-induced thrombocytopenia: Focus on platelet apoptosis. Chem Biol Interact 2018; 284:1-11. [PMID: 29410286 DOI: 10.1016/j.cbi.2018.01.015] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2017] [Revised: 12/23/2017] [Accepted: 01/18/2018] [Indexed: 12/16/2022]
Abstract
Thrombocytopenia is a serious and potentially fatal complication of drug therapy that results either from a decrease in bone marrow platelet production or the excessive destruction of circulating platelets. Although multiple mechanisms are responsible for deregulated platelet clearance, the role of programmed platelet death (apoptosis) in drug-induced thrombocytopenia has been relatively under-investigated until recently. Here we review apoptotic signaling pathways in platelets, with a focus on current data that provide mechanistic insights into drug-induced apoptosis and thrombocytopenia.
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Affiliation(s)
- Enoli De Silva
- Centre for Blood Research, University of British Columbia, Vancouver, Canada; Department of Biochemistry and Molecular Biology, University of British Columbia, Vancouver, Canada
| | - Hugh Kim
- Centre for Blood Research, University of British Columbia, Vancouver, Canada; Department of Biochemistry and Molecular Biology, University of British Columbia, Vancouver, Canada; Faculty of Dentistry, University of British Columbia, Vancouver, Canada.
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17
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Platelets redox balance assessment: Current evidence and methodological considerations. Vascul Pharmacol 2017; 93-95:6-13. [DOI: 10.1016/j.vph.2017.06.002] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2017] [Revised: 05/10/2017] [Accepted: 06/28/2017] [Indexed: 01/22/2023]
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18
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Liu Z, Ren B, Wang Y, Zou C, Qiao Q, Diao Z, Mi Y, Zhu D, Liu X. Sesamol Induces Human Hepatocellular Carcinoma Cells Apoptosis by Impairing Mitochondrial Function and Suppressing Autophagy. Sci Rep 2017; 7:45728. [PMID: 28374807 PMCID: PMC5379556 DOI: 10.1038/srep45728] [Citation(s) in RCA: 50] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2016] [Accepted: 03/03/2017] [Indexed: 12/19/2022] Open
Abstract
Sesamol, a nutritional phenolic antioxidant compound enriched in sesame seeds, has been shown to have potential anticancer activities. This study aims at characterizing the antitumor efficacy of sesamol and unveiling the importance of mitochondria in sesamol-induced effects using a human hepatocellular carcinoma cell line, HepG2 cells. Results of this study showed that sesamol treatment suppressed colony formation, elicited S phase arrest during cell cycle progression, and induced both intrinsic and extrinsic apoptotic pathway in vitro with a dose-dependent manner. Furthermore, sesamol treatment elicited mitochondrial dysfunction by inducing a loss of mitochondrial membrane potential. Impaired mitochondria and accumulated H2O2 production resulted in disturbance of redox-sensitive signaling including Akt and MAPKs pathways. Mitochondrial biogenesis was inhibited as suggested by the decline in expression of mitochondrial complex I subunit ND1, and the upstream AMPK/PGC1α signals. Importantly, sesamol inhibited mitophagy and autophagy through impeding the PI3K Class III/Belin-1 pathway. Autophagy stimulator rapamycin reversed sesamol-induced apoptosis and mitochondrial respiration disorders. Moreover, it was also shown that sesamol has potent anti-hepatoma activity in a xenograft nude mice model. These data suggest that mitochondria play an essential role in sesamol-induced HepG2 cells death, and further research targeting mitochondria will provide more chemotherapeutic opportunities.
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Affiliation(s)
- Zhigang Liu
- Laboratory of Functional Chemistry and Nutrition of Food, College of Food Science and Engineering, Northwest A&F University, Yangling, Shaanxi 712100, China
| | - Bo Ren
- Laboratory of Functional Chemistry and Nutrition of Food, College of Food Science and Engineering, Northwest A&F University, Yangling, Shaanxi 712100, China
| | - Yihui Wang
- School of Medicine, Tulane University, New Orleans, LA 70112, USA
| | - Chen Zou
- School of Agriculture and Biology, Shanghai Jiao Tong University, Shanghai 200240, China
| | - Qinglian Qiao
- Laboratory of Functional Chemistry and Nutrition of Food, College of Food Science and Engineering, Northwest A&F University, Yangling, Shaanxi 712100, China
| | - Zhijun Diao
- Laboratory of Functional Chemistry and Nutrition of Food, College of Food Science and Engineering, Northwest A&F University, Yangling, Shaanxi 712100, China
| | - Yashi Mi
- Laboratory of Functional Chemistry and Nutrition of Food, College of Food Science and Engineering, Northwest A&F University, Yangling, Shaanxi 712100, China
| | - Di Zhu
- Laboratory of Functional Chemistry and Nutrition of Food, College of Food Science and Engineering, Northwest A&F University, Yangling, Shaanxi 712100, China
| | - Xuebo Liu
- Laboratory of Functional Chemistry and Nutrition of Food, College of Food Science and Engineering, Northwest A&F University, Yangling, Shaanxi 712100, China
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19
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Jayakumar T, Yang CH, Geraldine P, Yen TL, Sheu JR. The pharmacodynamics of antiplatelet compounds in thrombosis treatment. Expert Opin Drug Metab Toxicol 2016; 12:615-32. [DOI: 10.1080/17425255.2016.1176141] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Thanasekaran Jayakumar
- Graduate Institute of Medical Sciences, Taipei Medical University, Taipei, Taiwan
- Department of Pharmacology, School of Medicine, College of Medicine, Taipei Medical University, Taipei, Taiwan
- College of Medicine, Taipei Medical University, Taipei, Taiwan
| | - Chih-Hao Yang
- Department of Pharmacology, School of Medicine, College of Medicine, Taipei Medical University, Taipei, Taiwan
| | - Pitchairaj Geraldine
- Department of Animal Science, School of Life Sciences, Bharathidasan University, Tiruchirappalli, India
| | - Ting-Lin Yen
- Graduate Institute of Medical Sciences, Taipei Medical University, Taipei, Taiwan
| | - Joen-Rong Sheu
- Graduate Institute of Medical Sciences, Taipei Medical University, Taipei, Taiwan
- Department of Pharmacology, School of Medicine, College of Medicine, Taipei Medical University, Taipei, Taiwan
- College of Medicine, Taipei Medical University, Taipei, Taiwan
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20
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Unconjugated Bilirubin exerts Pro-Apoptotic Effect on Platelets via p38-MAPK activation. Sci Rep 2015; 5:15045. [PMID: 26459859 PMCID: PMC4602209 DOI: 10.1038/srep15045] [Citation(s) in RCA: 50] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2015] [Accepted: 09/14/2015] [Indexed: 01/27/2023] Open
Abstract
Thrombocytopenia is one of the most frequently observed secondary complications in many pathological conditions including liver diseases, where hyperbilirubinemia is very common. The present study sought to find the cause of thrombocytopenia in unconjugated hyperbilirubinemic conditions. Unconjugated bilirubin (UCB), an end-product of heme catabolism, is known to have pro-oxidative and cytotoxic effects at high serum concentration. We investigated the molecular mechanism underlying the pro-apoptotic effect of UCB on human platelets in vitro, and followed it up with studies in phenylhydrazine-induced hyperbilirubinemic rat model and hyperbilirubinemic human subjects. UCB is indeed found to significantly induce platelet apoptotic events including elevated endogenous reactive oxygen species generation, mitochondrial membrane depolarization, increased intracellular calcium levels, cardiolipin peroxidation and phosphatidylserine externalization (p < 0.001) as evident by FACS analysis. The immunoblots show the elevated levels of cytosolic cytochrome c and caspase activation in UCB-treated platelets. Further, UCB is found to induce mitochondrial ROS generation leading to p38 activation, followed by downstream activation of p53, ultimately resulting in altered expression of Bcl-2 and Bax proteins as evident from immunoblotting. All these parameters conclude that elevated unconjugated bilirubin causes thrombocytopenia by stimulating platelet apoptosis via mitochondrial ROS-induced p38 and p53 activation.
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21
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Sharma RD, Katkar GD, Sundaram MS, Paul M, NaveenKumar SK, Swethakumar B, Hemshekhar M, Girish KS, Kemparaju K. Oxidative stress-induced methemoglobinemia is the silent killer during snakebite: a novel and strategic neutralization by melatonin. J Pineal Res 2015; 59:240-54. [PMID: 26103459 DOI: 10.1111/jpi.12256] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/11/2015] [Accepted: 06/19/2015] [Indexed: 12/20/2022]
Abstract
Oxidative stress-induced methemoglobinemia remained an untouched area in venom pharmacology till date. This study for the first time explored the potential of animal venoms to oxidize hemoglobin to methemoglobin. In in vitro whole-blood assay, methemoglobin forming ability of venoms varied as Naja naja > Ophiophagus hannah > Echis carinatus > Daboia russellii > Apis mellifera > Mesobuthus tamulus > Hippasa partita. Being highly potential, N. naja venom was further studied to observe methemoglobin formation in RBCs and in combinations with PMNs and PBMCs, where maximum effect was observed in RBCs + PMNs combination. Naja naja venom/externally added methemoglobin-induced methemoglobin formation was in parallel with ROS generation in whole blood/RBCs/RBCs + PMNs/RBCs + PBMCs. In in vivo studies, the lethal dose (1 mg/kg body weight, i.p.) of N. naja venom readily induced methemoglobin formation, ROS generation, expression of inflammatory markers, and hypoxia-inducible factor-3α. Although the mice administered with three effective doses of antivenom recorded zero mortality; the methemoglobin and ROS levels remained high. However, one effective dose of antivenom when administered along with melatonin (1:50; venom/melatonin, w/w), not only offered 100% survival of experimental mice, but also significantly reduced methemoglobin level, and oxidative stress markers including hypoxia-inducible factor-3α. This study provides strong drive that, complementing melatonin would not only reduce the antivenom load, but for sure greatly increase the success rate of antivenom therapy and drastically minimize the global incidence of snakebite deaths. However, further detailed investigations are needed before translating the combined therapy towards the bed side.
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Affiliation(s)
- Rachana D Sharma
- Department of Studies in Biochemistry, University of Mysore, Mysuru, India
| | - Gajanan D Katkar
- Department of Studies in Biochemistry, University of Mysore, Mysuru, India
| | | | - Manoj Paul
- Department of Studies in Biochemistry, University of Mysore, Mysuru, India
| | | | | | - Mahadevappa Hemshekhar
- Department of Internal Medicine, Manitoba Centre for Proteomics and Systems Biology, University of Manitoba, Winnipeg, MB, Canada
| | - Kesturu S Girish
- Department of Studies in Biochemistry, University of Mysore, Mysuru, India
- Department of Studies and Research in Biochemistry, Tumkur University, Tumkur, India
| | - Kempaiah Kemparaju
- Department of Studies in Biochemistry, University of Mysore, Mysuru, India
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22
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Liu B, Liu J, Sun P, Ma X, Jiang Y, Chen F. Sesamol Enhances Cell Growth and the Biosynthesis and Accumulation of Docosahexaenoic Acid in the Microalga Crypthecodinium cohnii. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2015; 63:5640-5. [PMID: 26017014 DOI: 10.1021/acs.jafc.5b01441] [Citation(s) in RCA: 48] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/09/2023]
Abstract
Sesamol is a strong antioxidant phenolic compound found in sesame seed. It possesses the ability to scavenge intracellular reactive oxygen species (ROS) and to inhibit malic enzyme activity and NADPH supply, resulting possibly in cell proliferation and alteration in the fatty acid composition. In the present study, the effect of sesamol on the growth and accumulation of docosahexaenoic acid (DHA) was investigated in the marine microalga Crypthecodinium cohnii, a prolific producer of DHA. C. cohnii showed a great decrease in the intracellular ROS level with the addition of sesamol. In contrast, the biomass concentration, DHA content (% of total fatty acids), and DHA productivity were significantly increased by 44.20, 11.25, and 20.00%, respectively (P < 0.01). Taken together, this work represents the first report of employing sesamol for enhanced production of DHA by C. cohnii, providing valuable insights into this alga for future biotechnological applications.
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Affiliation(s)
- Bin Liu
- †School of Light Industry and Food Sciences, South China University of Technology, Guangzhou 510641, China
- §Institute for Food and Bioresource Engineering, College of Engineering, Peking University, Beijing 100871, China
| | - Jin Liu
- §Institute for Food and Bioresource Engineering, College of Engineering, Peking University, Beijing 100871, China
- #Institute of Marine and Environmental Technology, University of Maryland Center for Environmental Science, Baltimore, Maryland 21202, United States
| | - Peipei Sun
- †School of Light Industry and Food Sciences, South China University of Technology, Guangzhou 510641, China
| | - Xiaonian Ma
- §Institute for Food and Bioresource Engineering, College of Engineering, Peking University, Beijing 100871, China
| | - Yue Jiang
- ⊥School of Food Science, Jiangnan University, Wuxi 214122, China
| | - Feng Chen
- §Institute for Food and Bioresource Engineering, College of Engineering, Peking University, Beijing 100871, China
- ΔSingapore-Peking University Research Centre for a Sustainable Low-Carbon Future, CREATE Tower, Singapore 138602
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23
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Methotrexate Promotes Platelet Apoptosis via JNK-Mediated Mitochondrial Damage: Alleviation by N-Acetylcysteine and N-Acetylcysteine Amide. PLoS One 2015; 10:e0127558. [PMID: 26083398 PMCID: PMC4471342 DOI: 10.1371/journal.pone.0127558] [Citation(s) in RCA: 46] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2015] [Accepted: 04/16/2015] [Indexed: 12/26/2022] Open
Abstract
Thrombocytopenia in methotrexate (MTX)-treated cancer and rheumatoid arthritis (RA) patients connotes the interference of MTX with platelets. Hence, it seemed appealing to appraise the effect of MTX on platelets. Thereby, the mechanism of action of MTX on platelets was dissected. MTX (10 μM) induced activation of pro-apoptotic proteins Bid, Bax and Bad through JNK phosphorylation leading to ΔΨm dissipation, cytochrome c release and caspase activation, culminating in apoptosis. The use of specific inhibitor for JNK abrogates the MTX-induced activation of pro-apoptotic proteins and downstream events confirming JNK phosphorylation by MTX as a key event. We also demonstrate that platelet mitochondria as prime sources of ROS which plays a central role in MTX-induced apoptosis. Further, MTX induces oxidative stress by altering the levels of ROS and glutathione cycle. In parallel, the clinically approved thiol antioxidant N-acetylcysteine (NAC) and its derivative N-acetylcysteine amide (NACA) proficiently alleviate MTX-induced platelet apoptosis and oxidative damage. These findings underpin the dearth of research on interference of therapeutic drugs with platelets, despite their importance in human health and disease. Therefore, the use of antioxidants as supplementary therapy seems to be a safe bet in pathologies associated with altered platelet functions.
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24
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Biologicals, platelet apoptosis and human diseases: An outlook. Crit Rev Oncol Hematol 2014; 93:149-58. [PMID: 25439323 DOI: 10.1016/j.critrevonc.2014.11.002] [Citation(s) in RCA: 40] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2014] [Revised: 10/06/2014] [Accepted: 11/10/2014] [Indexed: 01/07/2023] Open
Abstract
Platelets, once considered mediators of hemostasis and thrombosis, are now known to be involved in wound healing, inflammation, cardiovascular diseases, diabetes, arthritis, and cancer. Recent reports attest that platelets possess the cellular machinery to undergo apoptosis and that platelet apoptosis can be triggered by myriad stimuli including chemical and physical agonists, and pathophysiological conditions. Augmented rate of platelet apoptosis leads to thrombocytopenia, bleeding disorders and microparticle generation. Despite knowing the significant role of platelets in health and disease, and that any alterations in platelet functions can wreak havoc to the health, the offshoot reactions of therapeutic drugs on platelets and the far-reaching consequences are often neglected. The present review focuses on the impact of platelet apoptosis and the role of platelet-derived microparticles on different pathophysiological conditions. It also touches upon the effects of biologicals on platelets, and discusses the need to overcome the adverse effects of pro-apoptotic drugs through auxiliary therapy.
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25
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Thushara RM, Hemshekhar M, Paul M, Shanmuga Sundaram M, Shankar RL, Kemparaju K, Girish KS. Crocin prevents sesamol-induced oxidative stress and apoptosis in human platelets. J Thromb Thrombolysis 2014; 38:321-30. [DOI: 10.1007/s11239-014-1056-7] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
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