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Xing J, Wang K, Xu YC, Pei ZJ, Yu QX, Liu XY, Dong YL, Li SF, Chen Y, Zhao YJ, Yao F, Ding J, Hu W, Zhou RP. Efferocytosis: Unveiling its potential in autoimmune disease and treatment strategies. Autoimmun Rev 2024; 23:103578. [PMID: 39004157 DOI: 10.1016/j.autrev.2024.103578] [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: 01/26/2024] [Revised: 07/06/2024] [Accepted: 07/07/2024] [Indexed: 07/16/2024]
Abstract
Efferocytosis is a crucial process whereby phagocytes engulf and eliminate apoptotic cells (ACs). This intricate process can be categorized into four steps: (1) ACs release "find me" signals to attract phagocytes, (2) phagocytosis is directed by "eat me" signals emitted by ACs, (3) phagocytes engulf and internalize ACs, and (4) degradation of ACs occurs. Maintaining immune homeostasis heavily relies on the efficient clearance of ACs, which eliminates self-antigens and facilitates the generation of anti-inflammatory and immunosuppressive signals that maintain immune tolerance. However, any disruptions occurring at any of the efferocytosis steps during apoptosis can lead to a diminished efficacy in removing apoptotic cells. Factors contributing to this inefficiency encompass dysregulation in the release and recognition of "find me" or "eat me" signals, defects in phagocyte surface receptors, bridging molecules, and other signaling pathways. The inadequate clearance of ACs can result in their rupture and subsequent release of self-antigens, thereby promoting immune responses and precipitating the onset of autoimmune diseases such as systemic lupus erythematosus, rheumatoid arthritis, type 1 diabetes, and multiple sclerosis. A comprehensive understanding of the efferocytosis process and its implications can provide valuable insights for developing novel therapeutic strategies that target this process to prevent or treat autoimmune diseases.
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Affiliation(s)
- Jing Xing
- Department of Clinical Pharmacology, the Second Affiliated Hospital of Anhui Medical University, Hefei 230601, China; School of pharmacy, Anhui Medical University, Hefei 230032, China
| | - Ke Wang
- Department of Clinical Pharmacology, the Second Affiliated Hospital of Anhui Medical University, Hefei 230601, China
| | - Yu-Cai Xu
- Department of Clinical Pharmacology, the Second Affiliated Hospital of Anhui Medical University, Hefei 230601, China; School of pharmacy, Anhui Medical University, Hefei 230032, China
| | - Ze-Jun Pei
- Department of Clinical Pharmacology, the Second Affiliated Hospital of Anhui Medical University, Hefei 230601, China; School of pharmacy, Anhui Medical University, Hefei 230032, China
| | - Qiu-Xia Yu
- Department of Clinical Pharmacology, the Second Affiliated Hospital of Anhui Medical University, Hefei 230601, China; School of pharmacy, Anhui Medical University, Hefei 230032, China
| | - Xing-Yu Liu
- Department of Clinical Pharmacology, the Second Affiliated Hospital of Anhui Medical University, Hefei 230601, China; School of pharmacy, Anhui Medical University, Hefei 230032, China
| | - Ya-Lu Dong
- Department of Clinical Pharmacology, the Second Affiliated Hospital of Anhui Medical University, Hefei 230601, China; School of pharmacy, Anhui Medical University, Hefei 230032, China
| | - Shu-Fang Li
- Department of Clinical Pharmacology, the Second Affiliated Hospital of Anhui Medical University, Hefei 230601, China
| | - Yong Chen
- Department of Clinical Pharmacology, the Second Affiliated Hospital of Anhui Medical University, Hefei 230601, China
| | - Ying-Jie Zhao
- Department of Clinical Pharmacology, the Second Affiliated Hospital of Anhui Medical University, Hefei 230601, China
| | - Feng Yao
- Department of Clinical Pharmacology, the Second Affiliated Hospital of Anhui Medical University, Hefei 230601, China
| | - Jie Ding
- Department of Clinical Pharmacology, the Second Affiliated Hospital of Anhui Medical University, Hefei 230601, China
| | - Wei Hu
- Department of Clinical Pharmacology, the Second Affiliated Hospital of Anhui Medical University, Hefei 230601, China; The Key Laboratory of Anti-inflammatory and Immune Medicine, Anhui Medical University, Ministry of Education, Hefei 230032, China.
| | - Ren-Peng Zhou
- Department of Clinical Pharmacology, the Second Affiliated Hospital of Anhui Medical University, Hefei 230601, China; The Key Laboratory of Anti-inflammatory and Immune Medicine, Anhui Medical University, Ministry of Education, Hefei 230032, China.
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Price AD, Chae RC, Wallen TE, Becker ER, Baucom MR, Schuster RM, England L, Pritts TA, Goodman MD. Direct red blood cell effect on thrombosis is dependent on the interaction of tissue factor and calcium with membrane phosphatidylserine. J Trauma Acute Care Surg 2024; 97:57-64. [PMID: 38605437 PMCID: PMC11199102 DOI: 10.1097/ta.0000000000004340] [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] [Indexed: 04/13/2024]
Abstract
BACKGROUND Prior literature has implicated red blood cells (RBCs) in the initiation of thrombosis and suggests that posttransfusion hypercoagulability may occur secondary to the effects of RBCs. Elevated serum tissue factor is a known sequelae of acute trauma. Phosphatidylserine (PS) is a prothrombotic phospholipid present within the RBC cell membrane. We hypothesized that RBC aggregation is dependent on the interaction between RBC membrane bound (exposed) PS, extracellular calcium, and tissue factor. METHODS Human whole blood (WB) was separated into components, including RBCs and platelet-rich plasma (PRP). Whole blood, PRP, and RBCs underwent impedance aggregometry utilizing arachidonic acid (AA), ADP, collagen, calcium, and tissue factor (TF)-based agonists. Red blood cells then underwent impedance aggregometry utilizing combined calcium and TF agonists. Red blood cells were pretreated with Annexin V, a known PS blocking agent, and underwent impedance aggregometry with combined calcium and TF agonists to determine if the mechanism of calcium/TF-induced RBC aggregability is dependent on PS. Red blood cells treated with calcium, TF, calcium+TF, and pre-treated with Annexin V followed by calcium+TF were perfused through an in vitro model of pulmonary microcirculatory flow. RESULTS Red blood cell aggregation was significantly higher than that of WB and PRP when utilizing a TF agonist, an effect unique to TF. The combination of calcium and TF demonstrated significantly higher RBC aggregation than either agonist alone. Pretreatment with Annexin V resulted in a significantly reduced aggregability of RBC following treatment with TF + calcium. Red blood cells aged to 42 days did not exhibit significant change in aggregation. Exposure to calcium and TF significantly reduced time to thrombosis of RBCs perfused through a pulmonary microcirculatory model. CONCLUSION Treatment with both TF and calcium synergistically induces RBC aggregation. Phosphatidylserine appears to play an integral role in the TF/calcium-based, age-independent RBC aggregation response. Red blood cells treated with TF + calcium exhibit more rapid thrombus formation in an in vitro model of pulmonary microcirculatory perfusion.
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Affiliation(s)
- Adam D Price
- From the Department of Surgery, University of Cincinnati, Cincinnati, Ohio
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Park SG, Lee HB, Kang S. Development of plug-and-deliverable intracellular protein delivery platforms based on botulinum neurotoxin. Int J Biol Macromol 2024; 261:129622. [PMID: 38266854 DOI: 10.1016/j.ijbiomac.2024.129622] [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: 10/24/2023] [Revised: 01/04/2024] [Accepted: 01/18/2024] [Indexed: 01/26/2024]
Abstract
Intracellular protein delivery systems have great potential in the fields of therapeutics development and biomedical research. However, targeted delivery, passing through the cell membrane without damaging the cells, and escaping from endosomal entrapment of endocytosed molecular cargos are major challenges of the system. Here, we present a novel intracellular protein delivery system based on modularly engineered botulinum neurotoxin type A (BoNT/A). LHNA domain, consisting of light chain and endosomal escape machinery of BoNT/A, was genetically fused with SpyCatcher (SC) and EGFR targeting affibody (EGFRAfb) to create SC-LHNA-EGFRAfb, a target-specific and protein cargo-switchable BoNT/A-based intracellular protein delivery platform. SC-LHNA-EGFRAfb was purely purified in large quantities, efficiently ligated with multiple ST-fused protein cargos individually, generating a variety of protein cargo-containing intracellular delivery complexes, and successfully delivered ligated protein cargos into the cytosol of target cells via receptor-mediated endocytosis, followed by endosomal escape and subsequent cytosolic delivery. SC-LHNA-EGFRAfb enhanced intracellular delivery efficiency of protein toxin, gelonin, by approximately 100-fold, highlighting the crucial roles of EGFRAfb and LHNA domain as a targeting ligand and an endosomal escape machinery, respectively, in the delivery process. The BoNT-based plug-and-deliverable intracellular protein delivery system has the potential to expand its applications in protein therapeutics and manipulating cellular processes.
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Affiliation(s)
- Seong Guk Park
- Department of Biological Sciences, Ulsan National Institute of Science and Technology (UNIST), Ulsan 44919, Republic of Korea
| | - Hyun Bin Lee
- Department of Biological Sciences, Ulsan National Institute of Science and Technology (UNIST), Ulsan 44919, Republic of Korea
| | - Sebyung Kang
- Department of Biological Sciences, Ulsan National Institute of Science and Technology (UNIST), Ulsan 44919, Republic of Korea.
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Mohamed MR, Osman SA, Hassan AA, Raafat AI, Refaat MM, Fathy SA. Gemcitabine and synthesized silver nanoparticles impact on chemically induced hepatocellular carcinoma in male rats. Int J Immunopathol Pharmacol 2024; 38:3946320241263352. [PMID: 39046434 PMCID: PMC11271163 DOI: 10.1177/03946320241263352] [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: 08/30/2023] [Accepted: 06/02/2024] [Indexed: 07/25/2024] Open
Abstract
Objective: Gemcitabine (GEM) is a deoxycytidine analog chemotherapeutic drug widely used to treat many cancers. Silver nanoparticles (AgNPs) are important nanomaterials used to treat many diseases. Using gamma radiation in nanoparticle preparation is a new eco-friendly method. This study aims to evaluate the efficiency of co-treating gemcitabine and silver nanoparticles in treating hepatocellular carcinoma. Method: The AgNPs were characterized using UV-visible spectroscopy, XRD, TEM, and EDX. The MTT cytotoxicity in vitro assay of gemcitabine, doxorubicin, and cyclophosphamide was assessed against Wi38 normal fibroblast and HepG2 HCC cell lines. After HCC development, rats received (10 µg/g b.wt.) of AgNPs three times a week for 4 weeks and/or GEM (5 mg/kg b.wt.) twice weekly for 4 weeks. Liver function enzymes were investigated. Cytochrome P450 and miR-21 genes were studied. Apoptosis was determined by using flow cytometry, and apoptotic modifications in signaling pathways were evaluated via Bcl-2, Bax, Caspase-9, and SMAD-4. Results: The co-treatment of GEM and AgNPs increased apoptosis by upregulating Bax and caspase 9 while diminishing Bcl2 and SMAD4. It also improved cytochrome P450 m-RNA relative expression. The results also proved the cooperation between GEM and AgNPs in deactivating miR21. The impact of AgNPs as an adjuvant treatment with GEM was recognized. Conclusions: The study showed that co-treating AgNPs and GEM can improve the efficiency of GEM alone in treating HCC. This is achieved by enhancing intrinsic and extrinsic apoptotic pathways while diminishing some drawbacks of using GEM alone.
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Affiliation(s)
- Mohamed R Mohamed
- Biochemistry Department, Faculty of Science, Ain Shams University, Cairo, Egypt
| | - Soheir A Osman
- Radiation Biology Department, National Centre for Radiation Research and Technology, Egyptian Atomic Energy Authority, Cairo, Egypt
| | - Asmaa A Hassan
- Radiation Biology Department, National Centre for Radiation Research and Technology, Egyptian Atomic Energy Authority, Cairo, Egypt
| | - Amany I Raafat
- Polymer Chemistry Department, National Centre for Radiation Research and Technology, Egyptian Atomic Energy Authority, Cairo, Egypt
| | - Mahmoud M Refaat
- Radiation Biology Department, National Centre for Radiation Research and Technology, Egyptian Atomic Energy Authority, Cairo, Egypt
| | - Shadia A Fathy
- Biochemistry Department, Faculty of Science, Ain Shams University, Cairo, Egypt
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Fahmy HA, Mohamed MA, Mekkawy MH, Taha EFS. Role of TLR4 signaling pathway in the mitigation of damaged lung by low-dose gamma irradiation. Cell Biochem Funct 2023; 41:1188-1199. [PMID: 37732723 DOI: 10.1002/cbf.3851] [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: 06/24/2023] [Revised: 08/22/2023] [Accepted: 08/28/2023] [Indexed: 09/22/2023]
Abstract
Organisms frequently suffer negative effects from large doses of ionizing radiation. However, radiation is not as hazardous at lower doses as was once believed. The current study aims to evaluate the possible radio-adaptive effect induced by low-dose radiation (LDR) in modulating high-dose radiation (HDR) and N-nitrosodiethylamine (NDEA)-induced lung injury in male albino rats. Sixty-four male rats were randomly divided into four groups: Group 1 (control): normal rats; Group 2 (D): rats given NDEA in drinking water; Group 3 (DR): rats administered with NDEA then exposed to fractionated HDR; and Group 4 (DRL): rats administered with NDEA then exposed to LDR + HDR. In the next stage, malondialdehyde (MDA), glutathione reduced (GSH), catalase (CAT), and superoxide dismutase (SOD) levels in the lung tissues were measured. Furthermore, the enzyme-linked immunoassay analysis technique was performed to assess the Toll-like receptor 4 (TLR4), interleukin-1 receptor-associated kinase 4 (IRAK4), and mitogen-activated protein kinases (MAPK) expression levels. Histopathological and DNA fragmentation analyses in lung tissue, in addition to hematological and apoptosis analyses of the blood samples, were also conducted. Results demonstrated a significant increase in antioxidant defense and a reduction in MDA levels were observed in LDR-treated animals compared to the D and DR groups. Additionally, exposure to LDR decreased TLR4, IRAK4, and MAPK levels, decreased apoptosis, and restored all the alterations in the histopathological, hematological parameters, and DNA fragmentation, indicating its protective effects on the lung when compared with untreated rats. Taken together, LDR shows protective action against the negative effects of subsequent HDR and NDEA. This impact may be attributable to the adaptive response induced by LDR, which decreases DNA damage in lung tissue and activates the antioxidative, antiapoptotic, and anti-inflammatory systems in the affected animals, enabling them to withstand the following HDR exposure.
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Affiliation(s)
- Hanan A Fahmy
- Drug Radiation Research Department, National Center for Radiation Research and Technology (NCRRT), Egyptian Atomic Energy Authority (AEA), Cairo, Egypt
| | - Marwa A Mohamed
- Drug Radiation Research Department, National Center for Radiation Research and Technology (NCRRT), Egyptian Atomic Energy Authority (AEA), Cairo, Egypt
| | - Mai H Mekkawy
- Drug Radiation Research Department, National Center for Radiation Research and Technology (NCRRT), Egyptian Atomic Energy Authority (AEA), Cairo, Egypt
| | - Eman F S Taha
- Health Radiation Research, National Center for Radiation Research and Technology, Egyptian Atomic Energy Authority, Cairo, Egypt
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Tsai TH, Lee KT, Hsu YC. JSI-124 Induces Cell Cycle Arrest and Regulates the Apoptosis in Glioblastoma Cells. Biomedicines 2023; 11:2999. [PMID: 38001999 PMCID: PMC10669163 DOI: 10.3390/biomedicines11112999] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/24/2023] [Revised: 10/30/2023] [Accepted: 11/04/2023] [Indexed: 11/26/2023] Open
Abstract
Cucurbitacin I (JSI-124), derived from Cucurbitaceae, has shown the potential to induce apoptosis and cell cycle arrest in some cancer cells. However, the effect of JSI-124 on glioblastoma multiforme (GBM) cell cycle and apoptosis is still unclear. Our investigation revealed that JSI-124 effectively reduced cell viability in GBM cells, leading to apoptosis and increased caspase-3 activity. Intriguingly, JSI-124 caused the accumulation of G2/M phase to regulate cell cycle, confirmed by MPM-2 staining and increased protein synthesis during mitosis by mitotic index analysis. Western blot analysis found that JSI-124 affected the progression of G2/M arrest by downregulating the CDK1 and upregulating the cyclinB1, suggesting that JSI-124 disrupted the formation and function of the cyclin B1/CDK1 complex in GBM8401 and U87MG cells. However, we found the JSI-124-regulated cell cycle G2/M and apoptosis-relative gene in GBM8401 and U87MG cells by NGS data analysis. Notably, we found that the GBM8401 and U87MG cells observed regulation of apoptosis and cell-cycle-related signaling pathways. Taken together, JSI-124 exhibited the ability to induce G2/M arrest, effectively arresting the cell cycle at critical stages. This arrest is accompanied by the initiation of apoptosis, highlighting the dual mechanism of action of JSI-124. Collectively, our findings emphasize that JSI-124 holds potential as a therapeutic agent for GBM by impeding cell cycle progression, inhibiting cell proliferation, and promoting apoptosis. As demonstrated by our in vitro experiments, these effects are mediated through modulation of key molecular targets.
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Affiliation(s)
- Tai-Hsin Tsai
- Department of Surgery, School of Medicine, College of Medicine, Kaohsiung Medical University, Kaohsiung 807378, Taiwan;
- Division of Neurosurgery, Department of Surgery, Kaohsiung Medical University Hospital, Kaohsiung 807378, Taiwan
- Graduate Institutes of Medicine, College of Medicine, Kaohsiung Medical University, Kaohsiung 807378, Taiwan;
- Division of Neurosurgery, Department of Surgery, Kaohsiung Municipal Ta-Tung Hospital, Kaohsiung 80145, Taiwan
| | - Kuan-Ting Lee
- Graduate Institutes of Medicine, College of Medicine, Kaohsiung Medical University, Kaohsiung 807378, Taiwan;
- Division of Neurosurgery, Department of Surgery, Kaohsiung Municipal Ta-Tung Hospital, Kaohsiung 80145, Taiwan
| | - Yi-Chiang Hsu
- School of Medicine, I-Shou University, Kaohsiung 82445, Taiwan
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Kao Y, Chou CH, Huang LC, Tsai CK. Momordicine I suppresses glioma growth by promoting apoptosis and impairing mitochondrial oxidative phosphorylation. EXCLI JOURNAL 2023; 22:482-498. [PMID: 37534227 PMCID: PMC10391611 DOI: 10.17179/excli2023-6129] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Figures] [Subscribe] [Scholar Register] [Received: 04/25/2023] [Accepted: 05/30/2023] [Indexed: 08/04/2023]
Abstract
Glioblastoma (GBM) is the most common type of primary brain tumor. Patients with GBM have poor survival outcomes. Isolated components of Momordica charantia have anticancer effects. However, the bioactivity of M. charantia extracts against GBM remains unknown. We tested four major extracts of M. charantia and found that momordicine I reduced glioma cell viability without serious cytotoxic effects on astrocytes. Momordicine I suppressed glioma cell colony formation, proliferation, migration, and invasion. Momordicine I also induced apoptosis, intracellular reactive oxygen species (ROS) production, and senescence in glioma cells. Moreover, momordicine I decreased the oxidative phosphorylation capacity of glioma cells and inhibited tumor sphere formation in temozolomide (TMZ)-resistant GBM cells. We further explored whether the antiglioma effect of momordicine I may be related to cell cycle modulation and DLGPA5 expression. Our results indicate that the cytotoxic effect of momordicine I on glioma cells suggests its potential therapeutic application to GBM treatment. See also Figure 1(Fig. 1).
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Affiliation(s)
- Ying Kao
- Division of Neurosurgery, Department of Surgery, Taipei City Hospital Zhongxing Branch, Taipei 10341, Taiwan
- Taipei City University, Taipei 100234, Taiwan
| | - Chung-Hsing Chou
- Department of Neurology, Tri-Service General Hospital, National Defense Medical Center, Taipei 11490, Taiwan
| | - Li-Chun Huang
- Department of Biochemistry, National Defense Medical Center, Taipei 11490, Taiwan
| | - Chia-Kuang Tsai
- Department of Neurology, Tri-Service General Hospital, National Defense Medical Center, Taipei 11490, Taiwan
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El-Ashmawy NE, Khedr EG, Khedr NF, El-Adawy SA. Suppression of epithelial-mesenchymal transition and SIRT1/AKT signaling pathway in breast cancer by montelukast. Int Immunopharmacol 2023; 119:110148. [PMID: 37044036 DOI: 10.1016/j.intimp.2023.110148] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2023] [Revised: 03/17/2023] [Accepted: 03/31/2023] [Indexed: 04/14/2023]
Abstract
BACKGROUND Breast cancer is usually associated with metastatic features, poor prognosis, and high mortality. The epithelial-mesenchymal transition (EMT) process has been implicated in the initiation and metastasis of breast cancer. OBJECTIVE The study aimed to investigate the possible role of montelukast (Mont), the cysteinyl leukotriene receptor (CystLT1R) antagonist, in mitigating EMT in triple-negative breast cancer (TNBC) (in vitro study) and solid Ehrlich carcinoma (SEC) bearing mice (in vivo study) as well as to clarify the underlying molecular mechanisms in the presence and absence of sirtuin-1 inhibitor (sirtinol; Sirt). METHODS TNBC MDA-MB-231 cells were treated with either 5 μM Mont or 25 μM Sirt or both for 48 h. Alternatively, SEC cells were inoculated in mice to induce breast cancer. After 12 days, the mice were divided into four groups: Untreated SEC group (vehicle), Sirt group (1 mg/kg), Mont group (10 mg/kg), and cotreatment Sirt/Mont group. The mice groups received the assigned treatment for the consequent 16 days. RESULTS Mont and/or Sirt decreased cell proliferation, migration and suppressed EMT in both in vitro and in vivo experiments. All treatments downregulated sirtuin-1 and vimentin expression but upregulated E-cadherin expression. Furthermore, all treatments retarded angiogenesis as evidenced by decreased VEGF expression. These findings were associated with suppressing active protein kinase B (p-AKT). CONCLUSION Cotreatment with Sirt and Mont proved more effective anti-tumor activity in TNBC cell line and in SEC bearing mice than either treatment alone, which could be attributed to the inhibition of sirtuin-1 and AKT- activated pathways, with the subsequent inhibition of EMT.
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Affiliation(s)
- Nahla E El-Ashmawy
- Department of Biochemistry, Faculty of Pharmacy, Tanta University, 31527, Egypt
| | - Eman G Khedr
- Department of Biochemistry, Faculty of Pharmacy, Tanta University, 31527, Egypt
| | - Naglaa F Khedr
- Department of Biochemistry, Faculty of Pharmacy, Tanta University, 31527, Egypt
| | - Samar A El-Adawy
- Department of Biochemistry, Faculty of Pharmacy, Tanta University, 31527, Egypt.
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RTA dh404 Induces Cell Cycle Arrest, Apoptosis, and Autophagy in Glioblastoma Cells. Int J Mol Sci 2023; 24:ijms24044006. [PMID: 36835414 PMCID: PMC9962315 DOI: 10.3390/ijms24044006] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2022] [Revised: 02/10/2023] [Accepted: 02/10/2023] [Indexed: 02/18/2023] Open
Abstract
RTA dh404 is a novel synthetic oleanolic acid derivative that has been reported to possess anti-allergic, neuroprotective, antioxidative, and anti-inflammatory properties, and exerts therapeutic effects on various cancers. Although CDDO and its derivatives have anticancer effects, the actual anticancer mechanism has not been fully explored. Therefore, in this study, glioblastoma cell lines were exposed to different concentrations of RTA dh404 (0, 2, 4, and 8 µM). Cell viability was evaluated using the PrestoBlue™ reagent assay. The role of RTA dh404 in cell cycle progression, apoptosis, and autophagy was analyzed using flow cytometry and Western blotting. The expression of cell cycle-, apoptosis-, and autophagy-related genes was detected by next-generation sequencing. RTA dh404 reduces GBM8401 and U87MG glioma cell viability. RTA dh404 treated cells had a significant increase in the percentage of apoptotic cells and caspase-3 activity. In addition, the results of the cell cycle analysis showed that RTA dh404 arrested GBM8401 and U87MG glioma cells at the G2/M phase. Autophagy was observed in RTA dh404-treated cells. Subsequently, we found that RTA dh404-induced cell cycle arrest, apoptosis, and autophagy were related to the regulation of associated genes using next-generation sequencing. Our data indicated that RTA dh404 causes G2/M cell cycle arrest and induces apoptosis and autophagy by regulating the expression of cell cycle-, apoptosis-, and autophagy-related genes in human glioblastoma cells, suggesting that RTA dh404 is a potential drug candidate for the treatment of glioblastoma.
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Yan XX, Zhao YQ, He Y, Disayathanoowat T, Pandith H, Inta A, Yang LX. Cytotoxic and pro-apoptotic effects of botanical drugs derived from the indigenous cultivated medicinal plant Paris polyphylla var. yunnanensis. Front Pharmacol 2023; 14:1100825. [PMID: 36778018 PMCID: PMC9911168 DOI: 10.3389/fphar.2023.1100825] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2022] [Accepted: 01/10/2023] [Indexed: 01/27/2023] Open
Abstract
Background: Cancer is one of the top two leading causes of death worldwide. Ethnobotanical research, it is one of methods, which is able to discover effective anticancer drugs based on "prototype" of indigenous people's historical experiences and practices. The rhizomes of Paris polyphylla var. yunnanensis (Franch.) Hand.-Mazz. have been used as botanical drugs to treat cancer by Yi, Bai, Dai, and Naxi ethnic groups in Yunnan, China, where this species is widely cultivated in a large scale in Yunnan. Materials and methods: To identify the substances of anticancer activities based on indigenous medicine knowledge, chromatography was performed to separate saponins from the rhizomes of P. polyphylla var. yunnanensis, followed by spectroscopy to determine the structure of six isolated saponins. The cytotoxicity of five extracts and six pure compounds were evaluated by MTS method. Quantitative determination of total saponins of P. polyphylla var. yunnanensis was analyzed by HPLC. Cell cycle assay, apoptosis assay, and mitochondrial membrane potential were used to evaluate the pro-apoptotic activity in vitro. Results: Five extracts and six pure saponins showed significant inhibitory cytotoxic activities of three human liver cancer cell lines (SMMC-7721, HepG2, and SK-HEP-1) and one non-small-cell lung cancer cell line (A549). The contents of Paris saponins I, II, and VII were 6.96% in the rhizomes of P. polyphylla var. yunnanensis, much higher than Chinese Pharmacopoeia standards (0.6%). Six saponins induced significant apoptosis and cell cycle arrest in three human cancer cell lines (A549, SMMC-7721, and HepG2), which was associated with the loss of mitochondrial membrane potential. Conclusion: The result of this study support that cultivated P. polyphylla var. yunnanensis could be a substitute for wild resource as an anticancer medicine based on indigenous medicine knowledge.
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Affiliation(s)
- Xiu-Xiang Yan
- Key Laboratory of Economic Plants and Biotechnology, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming, Yunnan, China,Department of Biology, Faculty of Science, Chiang Mai University, Chiang Mai, Thailand
| | - Yan-Qiang Zhao
- College of Forestry and Vocational Technology in Yunnan, Kunming, Yunnan, China
| | - Yun He
- Lijiang Yunxin Green Biological Development Co., Ltd., Lijiang, Yunnan, China
| | - Terd Disayathanoowat
- Department of Biology, Faculty of Science, Chiang Mai University, Chiang Mai, Thailand
| | - Hataichanok Pandith
- Department of Biology, Faculty of Science, Chiang Mai University, Chiang Mai, Thailand
| | - Angkhana Inta
- Department of Biology, Faculty of Science, Chiang Mai University, Chiang Mai, Thailand,*Correspondence: Angkhana Inta, ; Li-Xin Yang,
| | - Li-Xin Yang
- Key Laboratory of Economic Plants and Biotechnology, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming, Yunnan, China,*Correspondence: Angkhana Inta, ; Li-Xin Yang,
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Synthesis, biological evaluation and preliminary mechanisms of 6-amino substituted harmine derivatives as potential antitumor agents. Fitoterapia 2022; 163:105329. [DOI: 10.1016/j.fitote.2022.105329] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2022] [Revised: 10/02/2022] [Accepted: 10/03/2022] [Indexed: 11/19/2022]
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Radix Glycyrrhizae Preparata Induces Cell Cycle Arrest and Induced Caspase-Dependent Apoptosis in Glioblastoma Multiforme. Neurol Int 2022; 14:804-823. [PMID: 36278690 PMCID: PMC9590052 DOI: 10.3390/neurolint14040066] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2022] [Revised: 10/04/2022] [Accepted: 10/09/2022] [Indexed: 11/22/2022] Open
Abstract
Glioblastoma multiforme (GBM) is a highly aggressive and devastating brain tumor characterized by poor prognosis and high rates of recurrence. Despite advances in multidisciplinary treatment, GBM constinues to have a poor overall survival. The Radix Glycyrrhizae Preparata (RGP) has been reported to possess anti-allergic, neuroprotective, antioxidative, and anti-inflammatory activities. However, it not clear what effect it may have on tumorigenesis in GBM. This study demonstrated that RGP reduced glioma cell viability and attenuated glioma cell locomotion in GBM8401 and U87MG cells. RGP treated cells had significant increase in the percentage of apoptotic cells and rise in the percentage of caspase-3 activity. In addition, the results of study’s cell cycle analysis also showed that RGP arrested glioma cells at G2/M phase and Cell failure pass the G2 checkpoint by RGP treatment in GBM8401 Cells. Based on the above results, it seems to imply that RGP activated DNA damage checkpoint system and cell cycle regulators and induce apoptosis in established GBM cells. In conclusion, RGP can inhibit proliferation, cell locomotion, cell cycle progression and induce apoptosis in GBM cells in vitro.
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Lou H, Ling GS, Cao X. Autoantibodies in systemic lupus erythematosus: From immunopathology to therapeutic target. J Autoimmun 2022; 132:102861. [PMID: 35872103 DOI: 10.1016/j.jaut.2022.102861] [Citation(s) in RCA: 32] [Impact Index Per Article: 16.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2022] [Accepted: 06/26/2022] [Indexed: 11/26/2022]
Abstract
Systemic lupus erythematosus (SLE) is an autoimmune disease characterized by multiple organ inflammatory damage and wide spectrum of autoantibodies. The autoantibodies, especially anti-dsDNA and anti-Sm autoantibodies are highly specific to SLE, and participate in the immune complex formation and inflammatory damage on multiple end-organs such as kidney, skin, and central nervous system (CNS). However, the underlying mechanisms of autoantibody-induced tissue damage and systemic inflammation are still not fully understood. Single cell analysis of autoreactive B cells and monoclonal antibody screening from patients with active SLE has improved our understanding on the origin of autoreactive B cells and the antigen targets of the pathogenic autoantibodies. B cell depletion therapies have been widely studied in the clinics, but the development of more specific therapies against the pathogenic B cell subset and autoantibodies with improved efficacy and safety still remain a big challenge. A more comprehensive autoantibody profiling combined with functional characterization of autoantibodies in diseases development will shed new insights on the etiology and pathogenesis of SLE and guide a specific treatment to individual SLE patients.
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Affiliation(s)
- Hantao Lou
- Ludwig Institute of Cancer Research, University of Oxford, Oxford, OX3 7DR, UK; Chinese Academy for Medical Sciences Oxford Institute, Nuffield Department of Medicine, University of Oxford, Oxford, OX3 7FZ, UK.
| | - Guang Sheng Ling
- School of Biomedical Sciences, LKS Faculty of Medicine, The University of Hong Kong, Hong Kong, China
| | - Xuetao Cao
- Chinese Academy for Medical Sciences Oxford Institute, Nuffield Department of Medicine, University of Oxford, Oxford, OX3 7FZ, UK; Nankai-Oxford International Advanced Institute, College of Life Sciences, Nankai University, Tianjin, 300071, China.
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14
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Kao Y, Huang LC, Hsu SY, Huang SM, Hueng DY. The Effect of Disulfiram and Copper on Cellular Viability, ER Stress and ALDH Expression of Human Meningioma Cells. Biomedicines 2022; 10:887. [PMID: 35453636 PMCID: PMC9025959 DOI: 10.3390/biomedicines10040887] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2022] [Revised: 03/27/2022] [Accepted: 04/06/2022] [Indexed: 11/17/2022] Open
Abstract
(1) Background: Meningiomas are the most common intracranial tumors in adults; currently there is no effective chemotherapy for malignant meningiomas. The effect of disulfiram (DSF)/Copper (Cu) on meningiomas remains unclear; (2) Methods: The impact of DSF/Cu on cell viability of meningioma adhesion cells (MgACs) and sphere cells (MgSCs) was assessed via MTS assay. The effects of DSF/Cu on intracellular Cu levels, cell senescence, and apoptosis were analyzed using CopperGreen, C12FDG, and Annexin V assays. Intracellular ALDH isoform expression and canonical pathway expression after DSF/Cu treatment were analyzed using mRNA microarray and Ingenuity Pathway Analysis, with further verification through qRT-PCR and immunoblotting; (3) Results: The viability of MgACs and MgSCs were inhibited by DSF/Cu. DSF/Cu increased intracellular Cu levels and cellular senescence. DSF/Cu also induced ER stress in MgACs and activated the PERK/eIF2 pathway for further adaptive response, apoptosis, and autophagy. Finally, DSF/Cu inhibited the expression of different ALDH isoforms in MgACs and MgSCs; (4) Conclusions: DSF/Cu exerts cytotoxic effects against both meningioma cells and stem-like cells and has treatment potential for meningioma.
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Affiliation(s)
- Ying Kao
- Graduate Institute of Medical Sciences, National Defense Medical Center, Taipei 11490, Taiwan;
- Division of Neurosurgery, Department of Surgery, Taipei City Hospital Zhongxing Branch, Taipei 10341, Taiwan
| | - Li-Chun Huang
- Department of Biochemistry, National Defense Medical Center, Taipei 11490, Taiwan; (L.-C.H.); (S.-M.H.)
| | - Shao-Yuan Hsu
- Division of Neurosurgery, Department of Surgery, Taipei City Hospital Renai Branch, Taipei 106243, Taiwan;
| | - Shih-Ming Huang
- Department of Biochemistry, National Defense Medical Center, Taipei 11490, Taiwan; (L.-C.H.); (S.-M.H.)
| | - Dueng-Yuan Hueng
- Graduate Institute of Medical Sciences, National Defense Medical Center, Taipei 11490, Taiwan;
- Department of Biochemistry, National Defense Medical Center, Taipei 11490, Taiwan; (L.-C.H.); (S.-M.H.)
- Department of Neurological Surgery, Tri-Service General Hospital, National Defense Medical Center, Taipei 11490, Taiwan
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15
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Chalayer E, Gramont B, Zekre F, Goguyer-Deschaumes R, Waeckel L, Grange L, Paul S, Chung AW, Killian M. Fc receptors gone wrong: A comprehensive review of their roles in autoimmune and inflammatory diseases. Autoimmun Rev 2021; 21:103016. [PMID: 34915182 DOI: 10.1016/j.autrev.2021.103016] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2021] [Accepted: 12/08/2021] [Indexed: 12/16/2022]
Abstract
Systemic autoimmune and inflammatory diseases have a complex and only partially known pathophysiology with various abnormalities involving all the components of the immune system. Among these components, antibodies, and especially autoantibodies are key elements contributing to autoimmunity. The interaction of antibody fragment crystallisable (Fc) and several distinct receptors, namely Fc receptors (FcRs), have gained much attention during the recent years, with possible major therapeutic perspectives for the future. The aim of this review is to comprehensively describe the known roles for FcRs (activating and inhibitory FcγRs, neonatal FcR [FcRn], FcαRI, FcεRs, Ro52/tripartite motif containing 21 [Ro52/TRIM21], FcδR, and the novel Fc receptor-like [FcRL] family) in systemic autoimmune and inflammatory disorders, namely rheumatoid arthritis, Sjögren's syndrome, systemic lupus erythematosus, systemic sclerosis, idiopathic inflammatory myopathies, mixed connective tissue disease, Crohn's disease, ulcerative colitis, immunoglobulin (Ig) A vasculitis, Behçet's disease, Kawasaki disease, IgG4-related disease, immune thrombocytopenia, autoimmune hemolytic anemia, antiphospholipid syndrome and heparin-induced thrombocytopenia.
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Affiliation(s)
- Emilie Chalayer
- Department of Hematology and Cell Therapy, Institut de Cancérologie Lucien Neuwirth, Saint-Etienne, France; INSERM U1059-Sainbiose, dysfonction vasculaire et hémostase, Université de Lyon, Saint-Etienne, France
| | - Baptiste Gramont
- CIRI - Centre International de Recherche en Infectiologie, Team GIMAP, Université de Lyon, Université Jean Monnet, Université Claude Bernard Lyon 1, INSERM, U1111, CNRS, UMR530, F42023 Saint-Etienne, France; Department of Internal Medicine, Saint-Etienne University Hospital, Saint-Etienne, France
| | - Franck Zekre
- CIRI - Centre International de Recherche en Infectiologie, Team GIMAP, Université de Lyon, Université Jean Monnet, Université Claude Bernard Lyon 1, INSERM, U1111, CNRS, UMR530, F42023 Saint-Etienne, France; Department of Pediatrics, Saint-Etienne University Hospital, Saint-Etienne, France
| | - Roman Goguyer-Deschaumes
- CIRI - Centre International de Recherche en Infectiologie, Team GIMAP, Université de Lyon, Université Jean Monnet, Université Claude Bernard Lyon 1, INSERM, U1111, CNRS, UMR530, F42023 Saint-Etienne, France
| | - Louis Waeckel
- CIRI - Centre International de Recherche en Infectiologie, Team GIMAP, Université de Lyon, Université Jean Monnet, Université Claude Bernard Lyon 1, INSERM, U1111, CNRS, UMR530, F42023 Saint-Etienne, France; Department of Immunology, Saint-Etienne University Hospital, Saint-Etienne, France
| | - Lucile Grange
- CIRI - Centre International de Recherche en Infectiologie, Team GIMAP, Université de Lyon, Université Jean Monnet, Université Claude Bernard Lyon 1, INSERM, U1111, CNRS, UMR530, F42023 Saint-Etienne, France; Department of Internal Medicine, Saint-Etienne University Hospital, Saint-Etienne, France
| | - Stéphane Paul
- CIRI - Centre International de Recherche en Infectiologie, Team GIMAP, Université de Lyon, Université Jean Monnet, Université Claude Bernard Lyon 1, INSERM, U1111, CNRS, UMR530, F42023 Saint-Etienne, France; Department of Immunology, Saint-Etienne University Hospital, Saint-Etienne, France
| | - Amy W Chung
- The Peter Doherty Institute for Infection and Immunity, The University of Melbourne, Melbourne, Victoria, Australia
| | - Martin Killian
- CIRI - Centre International de Recherche en Infectiologie, Team GIMAP, Université de Lyon, Université Jean Monnet, Université Claude Bernard Lyon 1, INSERM, U1111, CNRS, UMR530, F42023 Saint-Etienne, France; Department of Internal Medicine, Saint-Etienne University Hospital, Saint-Etienne, France.
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Venkatachalapathy D, Shivamallu C, Prasad SK, Thangaraj Saradha G, Rudrapathy P, Amachawadi RG, Patil SS, Syed A, Elgorban AM, Bahkali AH, Kollur SP, Basalingappa KM. Assessment of Chemopreventive Potential of the Plant Extracts against Liver Cancer Using HepG2 Cell Line. Molecules 2021; 26:molecules26154593. [PMID: 34361745 PMCID: PMC8348645 DOI: 10.3390/molecules26154593] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2021] [Revised: 07/14/2021] [Accepted: 07/19/2021] [Indexed: 11/16/2022] Open
Abstract
The edible parts of the plants Camellia sinensis, Vitis vinifera and Withania somnifera were extensively used in ancient practices such as Ayurveda, owing to their potent biomedical significance. They are very rich in secondary metabolites such as polyphenols, which are very good antioxidants and exhibit anti-carcinogenic properties. This study aims to evaluate the anti-cancerous properties of these plant crude extracts on human liver cancer HepG2 cells. The leaves of Camellia sinensis, Withania somnifera and the seeds of Vitis vinifera were collected and methanolic extracts were prepared. Then, these extracts were subjected to DPPH, α- amylase assays to determine the antioxidant properties. A MTT assay was performed to investigate the viability of the extracts of HepG2 cells, and the mode of cell death was detected by Ao/EtBr staining and flow cytometry with PI Annexin- V FITC dual staining. Then, the protein expression of BAX and BCl2 was studied using fluorescent dye to determine the regulation of the BAX and BCl2 genes. We observed that all the three extracts showed the presence of bioactive compounds such as polyphenols or phytochemicals. The W. somnifera bioactive compounds were found to have the highest anti-proliferative activity on human liver cancer cells.
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Affiliation(s)
- Deepthi Venkatachalapathy
- Division of Molecular Biology, Faculty of Life Science, JSS Academy of Higher Education & Research, Mysuru 570015, India;
| | - Chandan Shivamallu
- Department of Biotechnology and Bioinformatics, School of Life Sciences, JSS Academy of Higher Education and Research, Mysuru 570105, India; (S.K.P.); (G.T.S.)
- Correspondence: (C.S.); (S.P.K.); (K.M.B.)
| | - Shashanka K. Prasad
- Department of Biotechnology and Bioinformatics, School of Life Sciences, JSS Academy of Higher Education and Research, Mysuru 570105, India; (S.K.P.); (G.T.S.)
| | - Gopenath Thangaraj Saradha
- Department of Biotechnology and Bioinformatics, School of Life Sciences, JSS Academy of Higher Education and Research, Mysuru 570105, India; (S.K.P.); (G.T.S.)
| | - Parthiban Rudrapathy
- Malabar Cancer Centre, Department of Clinical Laboratory Services & Translational Research, Thalassery, Kannur 670103, India;
| | - Raghavendra G. Amachawadi
- Department of Clinical Sciences, College of Veterinary Medicine, Kansas State University, Manhattan, KS 66506-5606, USA;
| | - Sharanagouda S. Patil
- ICAR, National Institute of Veterinary Epidemiology and Disease Informatics (NIVEDI), Yelahanka, Bengaluru 560064, India;
| | - Asad Syed
- Department of Botany and Microbiology, College of Science, King Saud University, P.O. Box 2455, Riyadh 11451, Saudi Arabia; (A.S.); (A.M.E.); (A.H.B.)
| | - Abdallah M. Elgorban
- Department of Botany and Microbiology, College of Science, King Saud University, P.O. Box 2455, Riyadh 11451, Saudi Arabia; (A.S.); (A.M.E.); (A.H.B.)
| | - Ali H. Bahkali
- Department of Botany and Microbiology, College of Science, King Saud University, P.O. Box 2455, Riyadh 11451, Saudi Arabia; (A.S.); (A.M.E.); (A.H.B.)
| | - Shiva Prasad Kollur
- Department of Sciences, Amrita School of Arts and Sciences, Amrita Vishwa Vidyapeetham, Mysuru Campus, Mysuru 570026, India
- Correspondence: (C.S.); (S.P.K.); (K.M.B.)
| | - Kanthesh M. Basalingappa
- Division of Molecular Biology, Faculty of Life Science, JSS Academy of Higher Education & Research, Mysuru 570015, India;
- Correspondence: (C.S.); (S.P.K.); (K.M.B.)
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17
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Inhibitory Activities of Dimeric Ellagitannins Isolated from Cornus alba on Benign Prostatic Hypertrophy. Molecules 2021; 26:molecules26113446. [PMID: 34204056 PMCID: PMC8201330 DOI: 10.3390/molecules26113446] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2021] [Revised: 05/26/2021] [Accepted: 06/01/2021] [Indexed: 12/02/2022] Open
Abstract
Benign prostatic hypertrophy (BPH) is an intractable chronic inflammatory disease. We studied the efficacy of two ellagitannins, namely camptothin B (1) and cornusiin A (2) that were isolated from Cornus alba (CA) for the treatment of BPH, which is a common health issue in older men. The ellagitannins (1 and 2) were evaluated on its inhibitory activities of the enzyme 5α-reductase and tumor necrosis factor (TNF)-α, its interleukin (IL)-1β, IL-6, and IL-8 production, and its anti-proliferation and apoptosis induction in prostate cells that show hypertrophy (RWPE-1 cell). In inhibition of 5α-reductase, the ellagitannins (1 and 2) showed potential effects, compared to the positive control, finasteride. In the case of IL-1β, IL-6, IL-8, and TNF-α, 1 and 2 showed good inhibitory effects as compared to the control group treated with LPS. The ellagitannins (1 and 2) were also shown to inhibit proliferation of, and induce apoptosis in, the RWPE-1 cell. These results suggest that the ellagitannins (1 and 2) may be good candidates for the treatment of BPH.
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18
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Ruzi Z, Nie L, Bozorov K, Zhao J, Aisa HA. Synthesis and anticancer activity of ethyl 5-amino-1-N-substituted-imidazole-4-carboxylate building blocks. Arch Pharm (Weinheim) 2021; 354:e2000470. [PMID: 34032312 DOI: 10.1002/ardp.202000470] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2020] [Revised: 04/21/2021] [Accepted: 04/23/2021] [Indexed: 12/20/2022]
Abstract
A series of 5-amino-1-N-substituted-imidazole-4-carboxylate building blocks was synthesized and assayed for their antiproliferative potential against human cancer cell lines, including HeLa (cervical), HT-29, HCT-15 (colon), A549 (lung), and MDA-MB-231 (breast) cells. The preliminary screening results revealed that several derivatives containing alkyl chains at the N-1 position of the imidazole core demonstrate a certain inhibitory effect on growth and proliferation. A significant effect was observed following ethyl 5-amino-1-dodecyl-1H-imidazole-4-carboxylate (5e) treatment for 72 h. The IC50 value for HeLa cells was 0.737 ± 0.05 μM, whereas that for HT-29 cells was 1.194 ± 0.02 μM. Further investigations revealed that 5e significantly inhibited tumor cell colony formation and migration, and it exhibited antiadhesive effects on HeLa cells as well as antitubulin activity along with the induction of early apoptosis of HeLa and HT-29 cells. In addition, derivative 5e significantly reduced the cell mitochondrial membrane potential in a dose-dependent manner and induced early apoptosis of HeLa and HT-29 cells, indicating that 5e may serve as a lead compound for further drug discovery and development.
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Affiliation(s)
- Zukela Ruzi
- State Key Laboratory Basis of Xinjiang Indigenous Medicinal Plants Resource Utilization and Key Laboratory of Plant Resources and Chemistry in Arid Regions, Xinjiang Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Urumqi, China.,University of Chinese Academy of Sciences, Beijing, China
| | - Lifei Nie
- State Key Laboratory Basis of Xinjiang Indigenous Medicinal Plants Resource Utilization and Key Laboratory of Plant Resources and Chemistry in Arid Regions, Xinjiang Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Urumqi, China
| | - Khurshed Bozorov
- State Key Laboratory Basis of Xinjiang Indigenous Medicinal Plants Resource Utilization and Key Laboratory of Plant Resources and Chemistry in Arid Regions, Xinjiang Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Urumqi, China.,Faculty of Chemistry, National University of Uzbekistan, Tashkent, Uzbekistan
| | - Jiangyu Zhao
- State Key Laboratory Basis of Xinjiang Indigenous Medicinal Plants Resource Utilization and Key Laboratory of Plant Resources and Chemistry in Arid Regions, Xinjiang Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Urumqi, China
| | - Haji A Aisa
- State Key Laboratory Basis of Xinjiang Indigenous Medicinal Plants Resource Utilization and Key Laboratory of Plant Resources and Chemistry in Arid Regions, Xinjiang Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Urumqi, China
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19
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Pontejo SM, Murphy PM. Chemokines act as phosphatidylserine-bound "find-me" signals in apoptotic cell clearance. PLoS Biol 2021; 19:e3001259. [PMID: 34038417 PMCID: PMC8213124 DOI: 10.1371/journal.pbio.3001259] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2020] [Revised: 06/18/2021] [Accepted: 05/05/2021] [Indexed: 12/14/2022] Open
Abstract
Removal of apoptotic cells is essential for maintenance of tissue homeostasis. Chemotactic cues termed "find-me" signals attract phagocytes toward apoptotic cells, which selectively expose the anionic phospholipid phosphatidylserine (PS) and other "eat-me" signals to distinguish healthy from apoptotic cells for phagocytosis. Blebs released by apoptotic cells can deliver find-me signals; however, the mechanism is poorly understood. Here, we demonstrate that apoptotic blebs generated in vivo from mouse thymus attract phagocytes using endogenous chemokines bound to the bleb surface. We show that chemokine binding to apoptotic cells is mediated by PS and that high affinity binding of PS and other anionic phospholipids is a general property of many but not all chemokines. Chemokines are positively charged proteins that also bind to anionic glycosaminoglycans (GAGs) on cell surfaces for presentation to leukocyte G protein-coupled receptors (GPCRs). We found that apoptotic cells down-regulate GAGs as they up-regulate PS on the cell surface and that PS-bound chemokines, unlike GAG-bound chemokines, are able to directly activate chemokine receptors. Thus, we conclude that PS-bound chemokines may serve as find-me signals on apoptotic vesicles acting at cognate chemokine receptors on leukocytes.
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Affiliation(s)
- Sergio M Pontejo
- Molecular Signaling Section, Laboratory of Molecular Immunology, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, Maryland, United States of America
| | - Philip M Murphy
- Molecular Signaling Section, Laboratory of Molecular Immunology, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, Maryland, United States of America
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20
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An Integrated Approach of the Potential Underlying Molecular Mechanistic Paradigms of SARS-CoV-2-Mediated Coagulopathy. Indian J Clin Biochem 2021; 36:387-403. [PMID: 33875909 PMCID: PMC8047580 DOI: 10.1007/s12291-021-00972-3] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2020] [Accepted: 04/03/2021] [Indexed: 02/06/2023]
Abstract
Coronavirus disease 2019 (Covid-19) caused by severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) is a pandemic disease which has affected more than 6.2 million people globally, with numbers mounting considerably daily. However, till date, no specific treatment modalities are available for Covid-19 and also not much information is known about this disease. Recent studies have revealed that SARS-CoV-2 infection is associated with the generation of thrombosis and coagulopathy. Fundamentally, it has been believed that a diverse array of signalling pathways might be responsible for the activation of coagulation cascade during SARS-CoV-2 infection. Henceforth, a detailed understanding of these probable underlying molecular mechanistic pathways causing thrombosis in Covid-19 disease deserves an urgent exploration. Therefore, in this review, the hypothetical crosstalk between distinct signalling pathways including apoptosis, inflammation, hypoxia and angiogenesis attributable for the commencement of thrombotic events during SARS-CoV-2 infection has been addressed which might further unravel promising therapeutic targets in Covid-19 disease.
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21
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Cytotoxicity and Genotoxicity of Metal Oxide Nanoparticles in Human Pluripotent Stem Cell-Derived Fibroblasts. COATINGS 2021. [DOI: 10.3390/coatings11010107] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
Advances in the use of nanoparticles (NPs) has created promising progress in biotechnology and consumer-care based industry. This has created an increasing need for testing their safety and toxicity profiles. Hence, efforts to understand the cellular responses towards nanomaterials are needed. However, current methods using animal and cancer-derived cell lines raise questions on physiological relevance. In this aspect, in the current study, we investigated the use of pluripotent human embryonic stem cell- (hESCs) derived fibroblasts (hESC-Fib) as a closer representative of the in vivo response as well as to encourage the 3Rs (replacement, reduction and refinement) concept for evaluating the cytotoxic and genotoxic effects of zinc oxide (ZnO), titanium dioxide (TiO2) and silicon-dioxide (SiO2) NPs. Cytotoxicity assays demonstrated that the adverse effects of respective NPs were observed in hESC-Fib beyond concentrations of 200 µg/mL (SiO2 NPs), 30 µg/mL (TiO2 NPs) and 20 µg/mL (ZnO NPs). Flow cytometry results correlated with increased apoptosis upon increase in NP concentration. Subsequently, scratch wound assays showed ZnO (10 µg/mL) and TiO2 (20 µg/mL) NPs inhibit the rate of wound coverage. DNA damage assays confirmed TiO2 and ZnO NPs are genotoxic. In summary, hESC-Fib could be used as an alternative platform to understand toxicity profiles of metal oxide NPs.
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22
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Lou H, Wojciak-Stothard B, Ruseva MM, Cook HT, Kelleher P, Pickering MC, Mongkolsapaya J, Screaton GR, Xu XN. Autoantibody-dependent amplification of inflammation in SLE. Cell Death Dis 2020; 11:729. [PMID: 32908129 PMCID: PMC7481301 DOI: 10.1038/s41419-020-02928-6] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2020] [Revised: 08/07/2020] [Accepted: 08/24/2020] [Indexed: 12/13/2022]
Abstract
Anti-double stranded DNA antibodies (anti-dsDNA) are a hallmark of SLE but their role in disease pathogenesis is not fully resolved. Anti-dsDNA in serum are highly heterogeneous therefore in this study, we aimed to dissect the functional specificities of anti-dsDNA using a panel of human monoclonal antibodies (humAbs) generated from patients with active lupus nephritis. A total of 46 ANA reactive humAbs were isolated and divided into four broad classes based on their reactivity to histones, DNA and Crithidia. Functional analysis indicated that one subclass of antibodies bound strongly to decondensed DNA areas in neutrophil extracellular traps (NETs) and protected NETs from nuclease digestion, similar to the sera from active SLE patients. In addition, these anti-dsDNA antibodies could stimulate type I interferon responses in mononuclear phagocytic cells, or NF-kB activity in endothelial cells, by uptake of NETs-anti-NETs immune complexes and subsequently trigging inflammatory responses in an Fc-gamma receptor (Fcg-R)-dependant manner. Together our data suggest that only a subset of anti-dsDNA antibodies is capable to amplify inflammatory responses by deposit in the nephritic kidney in vivo, protecting NETs digestion as well as uptake of NETs immune complexes into Fcg-R-expressing cells in vitro.
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Affiliation(s)
- Hantao Lou
- Division of Immunology and Inflammation, Department of Medicine, Hammersmith Campus, Imperial College London, London, W12 0NN, UK.
- Department of Medicine, Centre for Immunology & Vaccinology, Chelsea and Westminster Hospital, Imperial College London, London, SW10 9NH, UK.
| | - Beata Wojciak-Stothard
- Department of Medicine, Centre for Pharmacology and Therapeutics, Imperial College London, London, W12 0HS, UK
| | - Marieta M Ruseva
- Division of Immunology and Inflammation, Centre for Complement and Inflammation Research, Imperial College London, London, W12 0NN, UK
| | - H Terence Cook
- Division of Immunology and Inflammation, Centre for Complement and Inflammation Research, Imperial College London, London, W12 0NN, UK
| | - Peter Kelleher
- Department of Medicine, Centre for Immunology & Vaccinology, Chelsea and Westminster Hospital, Imperial College London, London, SW10 9NH, UK
- Department of Infection and Immunity, Charing Cross Hospital North West London Pathology, London, W6 8RF, UK
| | - Matthew C Pickering
- Division of Immunology and Inflammation, Centre for Complement and Inflammation Research, Imperial College London, London, W12 0NN, UK
| | - Juthathip Mongkolsapaya
- Division of Immunology and Inflammation, Department of Medicine, Hammersmith Campus, Imperial College London, London, W12 0NN, UK
- Division of Medical Sciences, John Radcliffe Hospital, Oxford University, Oxford, OX3 9DU, UK
| | - Gavin R Screaton
- Division of Immunology and Inflammation, Department of Medicine, Hammersmith Campus, Imperial College London, London, W12 0NN, UK
- Division of Medical Sciences, John Radcliffe Hospital, Oxford University, Oxford, OX3 9DU, UK
| | - Xiao-Ning Xu
- Department of Medicine, Centre for Immunology & Vaccinology, Chelsea and Westminster Hospital, Imperial College London, London, SW10 9NH, UK.
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23
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Park SG, Choi B, Bae Y, Lee YG, Park SA, Chae YC, Kang S. Selective and Effective Cancer Treatments using Target‐Switchable Intracellular Bacterial Toxin Delivery Systems. ADVANCED THERAPEUTICS 2020. [DOI: 10.1002/adtp.202000043] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Affiliation(s)
- Seong Guk Park
- Department of Biological Sciences School of Life Sciences Ulsan National Institute of Science and Technology (UNIST) Ulsan 44919 South Korea
| | - Bongseo Choi
- Department of Biological Sciences School of Life Sciences Ulsan National Institute of Science and Technology (UNIST) Ulsan 44919 South Korea
- Department of Radiology Feinberg School of Medicine Northwestern University Chicago IL 60611 USA
| | - Yoonji Bae
- Department of Biological Sciences School of Life Sciences Ulsan National Institute of Science and Technology (UNIST) Ulsan 44919 South Korea
| | - Yu Geon Lee
- Department of Biological Sciences School of Life Sciences Ulsan National Institute of Science and Technology (UNIST) Ulsan 44919 South Korea
| | - Soo Ah Park
- In Vivo Research Center UNIST Central Research Facilities Ulsan National Institute of Science and Technology (UNIST) Ulsan 44919 South Korea
| | - Young Chan Chae
- Department of Biological Sciences School of Life Sciences Ulsan National Institute of Science and Technology (UNIST) Ulsan 44919 South Korea
| | - Sebyung Kang
- Department of Biological Sciences School of Life Sciences Ulsan National Institute of Science and Technology (UNIST) Ulsan 44919 South Korea
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Malekshah RE, Shakeri F, Khaleghian A, Salehi M. Developing a biopolymeric chitosan supported Schiff-base and Cu(II), Ni(II) and Zn(II) complexes and biological evaluation as pro-drug. Int J Biol Macromol 2020; 152:846-861. [DOI: 10.1016/j.ijbiomac.2020.02.245] [Citation(s) in RCA: 34] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2019] [Revised: 02/16/2020] [Accepted: 02/22/2020] [Indexed: 12/13/2022]
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Yapasert R, Sripanidkulchai B, Teerachaisakul M, Banchuen K, Banjerdpongchai R. Anticancer effects of a traditional Thai herbal recipe Benja Amarit extracts against human hepatocellular carcinoma and colon cancer cell by targeting apoptosis pathways. JOURNAL OF ETHNOPHARMACOLOGY 2020; 254:112732. [PMID: 32142865 DOI: 10.1016/j.jep.2020.112732] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/18/2019] [Revised: 02/24/2020] [Accepted: 03/01/2020] [Indexed: 06/10/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE A preparation of Benja Amarit (BJA) has been effectively used in folk medicine to treat diseases related to the liver and colon and forms of cancer for hundreds of years in Thailand. However, there has not been any research on BJA with regard to its anticancer activity against human hepatocellular carcinoma and colon cancer cells. AIM OF THE STUDY This study was to obtain the scientific supports for the traditional usage in anticancer potential of BJA extracts on hepatocellular carcinoma and colon cancer. MATERIALS AND METHODS The cytotoxic effects were determined using MTT assay. Apoptosis was quantitated by annexin V-FITC/PI staining. Caspases activities were measured by using specific substrates and colorimetric analysis. The protein expressions were determined by Western blot analysis. Reactive oxygen species (ROS) generation, mitochondrial transmembrane potential, and calcium ion levels were measured by specific fluorescence probes and flow cytometry. The chick embryo chorioallantoic membrane model has been used to study the in vivo anticancer activity. The phytochemical identification was performed by GC-MS and LC-MS. RESULTS Notably, 95% (BJA-95) and 50% (BJA-50) ethanolic extract of BJA inhibited hepatocellular carcinoma and colon cancer cell viability in a dose-dependent manner. While, the water extract of BJA (BJA-W) was not found to be toxic to both kinds of cancer cell lines. BJA extract induced both the extrinsic and intrinsic or mitochondria-mediated apoptosis pathways. Moreover, BJA-95 caused ROS generation and endoplasmic reticulum stress-mediated apoptosis. The extract exhibited the growth inhibitory effects on cancer cells in vivo. Phytochemical analysis revealed that the major active compounds were piperine, xanthotoxol and dihydrogambogic acid. CONCLUSION This study is the first to demonstrate anticancer efficiency of BJA extracts on human cancer cells. We consider BJA extract to be a potentially alternative cancer treatment and to be a promising candidate in the future development of antitumor agents.
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Affiliation(s)
- Rittibet Yapasert
- Department of Biochemistry, Faculty of Medicine, Chiang Mai University, Chiang Mai, 50200, Thailand
| | - Bungorn Sripanidkulchai
- Center for Research and Development of Herbal Health Products, Thailand; Department of Pharmaceutical Chemistry, Faculty of Pharmaceutical Sciences, Khon Kaen University, Khon Kaen, 40002, Thailand
| | - Monthaka Teerachaisakul
- Thai Traditional Medicine Research Institute, Department of Thai Traditional and Alternative Medicine, Ministry of Public Health, Bangkok, 10100, Thailand
| | - Kamonwan Banchuen
- Thai Traditional Medicine Research Institute, Department of Thai Traditional and Alternative Medicine, Ministry of Public Health, Bangkok, 10100, Thailand
| | - Ratana Banjerdpongchai
- Department of Biochemistry, Faculty of Medicine, Chiang Mai University, Chiang Mai, 50200, Thailand.
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Vincristine induces procoagulant activity of the human lymphoblastic leukemia cell line Jurkat through the release of extracellular vesicles. J Thromb Thrombolysis 2020; 48:195-202. [PMID: 31175530 DOI: 10.1007/s11239-019-01894-x] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
Abstract
Thromboembolic events are frequent and serious complications of acute lymphoblastic leukaemia treatment. The importance of chemotherapy in the pathogenesis of this increased risk is enhanced by the fact that thrombosis rarely occurs at diagnosis. Our study aims at investigating the effect of chemotherapy on pro-coagulant activity (PCA), phosphatidylserine (PS) exposure, tissue factor (TF) activity and derived extracellular vesicles (EV) of Jurkat cells. Jurkat cells were treated with two commonly used chemotherapeutics: Vincristine (VCR) or Daunorubicin (DNR), at relevant concentrations. PCA of cells and derived EV were evaluated using Thrombin generation Assay (TGA). Cells or EV were incubated with annexin V or anti TF antibodies to assess the respective contribution of TF and PS. PS exposure on cells was analysed by flow cytometry. Derived EV were evaluated in fluorescence microscopy and flow cytometry. Untreated Jurkat cells and EV support thrombin generation. Thrombin generation was abolished when PS activity was inhibited by annexin V. VCR treatment resulted in a time dependent increase of thrombin generation. After VCR exposure, TF activity increased as well as PS exposure increased on the cell surface. The increase in TF activity was abolished by annexin V indicating that PS was required. A spontaneous release of EV from Jurkat cells was observed and VCR treatment increased the number of generated EV. Our results indicate that VCR increased the PCA of Jurkat cells predominantly through PS exposure and increased EV generation. Lymphoid blasts derived EV could be biomarkers to determine high thrombotic risk ALL patients.
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Cuitino L, Obreque J, Gajardo-Meneses P, Villarroel A, Crisóstomo N, San Francisco IF, Valenzuela RA, Méndez GP, Llanos C. Heme-Oxygenase-1 Is Decreased in Circulating Monocytes and Is Associated With Impaired Phagocytosis and ROS Production in Lupus Nephritis. Front Immunol 2019; 10:2868. [PMID: 31921135 PMCID: PMC6923251 DOI: 10.3389/fimmu.2019.02868] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2019] [Accepted: 11/22/2019] [Indexed: 12/18/2022] Open
Abstract
Lupus nephritis (LN) is one of the most serious manifestations of systemic lupus erythematosus (SLE). Based on studies showing the potential role of heme oxygenase-1 (HO-1), an enzyme that catalyzes the degradation of heme and has anti-inflammatory properties in SLE development, we decided to explore HO-1 in LN. Accordingly, we evaluated HO-1 levels and function in circulating and infiltrating monocytes and neutrophils of LN patients. HO-1 levels were assessed in peripheral monocytes of LN patients and controls by flow cytometry and immunofluorescence microscopy. Phagocytosis and the production of reactive oxygen species (ROS) were evaluated to determine the effect of HO-1 in monocyte function. In addition, renal biopsies with proliferative LN were used to identify HO-1 in infiltrating cells and renal tissue by immunofluorescence and immunohistochemistry. Biopsies of healthy controls (HC) and patients who underwent nephrectomy were included as controls. Circulating pro-inflammatory monocytes and activated neutrophils were increased in LN patients. HO-1 levels were decreased in all subsets of monocytes and in activated neutrophils. LN monocytes showed increased phagocytosis and higher production of ROS than those of HC. When HO-1 was induced, phagocytosis and ROS levels became similar to those of HC. HO-1 was mostly expressed in renal tubular epithelial cells (RTEC). Renal tissue of LN patients showed lower levels of HO-1 than HC, whereas infiltrating immune cells of LN showed lower levels of HO-1 than biopsies of patients who had renal surgery. HO-1 is decreased in circulating monocytes and activated neutrophils of LN patients. HO-1 levels modulate the phagocytosis of LN monocytes and ROS production. HO-1 expression in RTEC might be an attempt of self-protection from inflammation.
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Affiliation(s)
- Loreto Cuitino
- Departamento de Inmunología Clínica y Reumatología, Escuela de Medicina, Pontificia Universidad Católica de Chile, Santiago, Chile
| | - Javiera Obreque
- Departamento de Inmunología Clínica y Reumatología, Escuela de Medicina, Pontificia Universidad Católica de Chile, Santiago, Chile
| | - Patricia Gajardo-Meneses
- Departamento de Inmunología Clínica y Reumatología, Escuela de Medicina, Pontificia Universidad Católica de Chile, Santiago, Chile
| | - Alejandra Villarroel
- Departamento de Anatomía Patológica, Escuela de Medicina, Pontificia Universidad Católica de Chile, Santiago, Chile
| | - Natalia Crisóstomo
- Departamento de Inmunología Clínica y Reumatología, Escuela de Medicina, Pontificia Universidad Católica de Chile, Santiago, Chile
| | - Ignacio F San Francisco
- Departamento de Urología, Escuela de Medicina, Pontificia Universidad Católica de Chile, Santiago, Chile
| | - Rodrigo A Valenzuela
- Departamento de Ciencias Químicas y Biológicas, Facultad de Salud, Universidad Bernardo O'Higgins, Santiago, Chile
| | - Gonzalo P Méndez
- Departamento de Anatomía Patológica, Escuela de Medicina, Pontificia Universidad Católica de Chile, Santiago, Chile
| | - Carolina Llanos
- Departamento de Inmunología Clínica y Reumatología, Escuela de Medicina, Pontificia Universidad Católica de Chile, Santiago, Chile
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Hurley SK, Cutrone NM, Fath KR, Pajovich HT, Garcia J, Smith AM, Banerjee IA. Self-assembled phenylisoxazole-peptide hybrid assemblies and their interactions with breast and ovarian tumor cells. INT J POLYM MATER PO 2019. [DOI: 10.1080/00914037.2018.1525542] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Affiliation(s)
- Sara K. Hurley
- Department of Chemistry, Fordham University, Bronx, NY, USA
| | | | - Karl R. Fath
- Department of Biology, Queens College, City University of New York, New York, NY, USA
| | | | - Jeremy Garcia
- Department of Biology, Queens College, City University of New York, New York, NY, USA
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Shen T, Kan J, Benet E, Vernerey FJ. On the blistering of thermo-sensitive hydrogel: the volume phase transition and mechanical instability. SOFT MATTER 2019; 15:5842-5853. [PMID: 31290890 DOI: 10.1039/c9sm00911f] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
This paper explores the physical mechanisms responsible for the appearance of small blisters on the surface of temperature sensitive hydrogels as they deswell rapidly during their volume phase transition. For this, we develop a numerical model that couples the processes of hydrogel deswelling and blister growth due to the existence of a thin quasi-impermeable layer on its surface. The model points out that blister inflation originates at defects point under the gel's surface, under the effect of the increasing osmotic pressure in the gel as it undergoes its phase transition. Due to their large deformation, these blisters often experience a mechanical instability that triggers a sudden increase in their growth rate at the expense of their closest neighbors. Using a simple computational model, we then show that blisters are able to communicate via internal pressure and that these interactions are mediated by two characteristic time scales related to solvent transport within and between adjacent blisters. Our study finally indicates that these mechanisms can be controlled by temperature and the gel's cross-link density to achieve diversity of blister patterns on the gel's surface. The proposed analysis provides predictions that agree well with experimental observations of NiPAm gels which deswell in various conditions.
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Affiliation(s)
- Tong Shen
- University of Colorado Boulder, Boulder, CO 80302, USA.
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Liu ML, Werth VP, Williams KJ. Blood plasma versus serum: which is right for sampling circulating membrane microvesicles in human subjects? Ann Rheum Dis 2019; 79:e73. [PMID: 31005899 DOI: 10.1136/annrheumdis-2019-215505] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2019] [Accepted: 04/11/2019] [Indexed: 11/03/2022]
Affiliation(s)
- Ming-Lin Liu
- Department of Dermatology, Perelman School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania, USA .,Corporal Michael J Crescenz VAMC, Philadelphia, PA, USA
| | - Victoria P Werth
- Department of Dermatology, Perelman School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania, USA.,Corporal Michael J Crescenz VAMC, Philadelphia, PA, USA
| | - Kevin Jon Williams
- Section of Endocrinology, Department of Medicine, Lewis Katz School of Medicine, Temple University, Philadelphia, Pennsylvania, USA
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Zhu C, Shi W, Daleke DL, Baker LA. Monitoring dynamic spiculation in red blood cells with scanning ion conductance microscopy. Analyst 2019; 143:1087-1093. [PMID: 29384152 DOI: 10.1039/c7an01986f] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Abstract
Phospholipids are critical structural components of the membrane of human erythrocytes and their asymmetric transbilayer distribution is essential for normal cell functions. Phospholipid asymmetry is maintained by transporters that shuttle phospholipids between the inner leaflet and the outer leaflet of the membrane bilayer. When an exogenous, short acyl chain, phosphatidylcholine (PC) or phosphatidylserine (PS) is incorporated into erythrocytes, a discocyte-to-echinocyte shape change is induced. PC treated cells remain echinocytic, while PS treated cells return to discocytes, and eventually stomatocytes, due to the action of an inwardly directed transporter. These morphological changes have been well studied by light microscopy and scanning electron microscopy in the past few decades. However, most of this research is based on the glutaraldehyde fixed cells, which limits the dynamic study in discrete time points instead of continuous single cell measurements. Scanning ion conductance microscopy (SICM) is a scanning probe technique which is ideal for live cell imaging due to high resolution, in situ and non-contact scanning. To better understand these phospholipid-induced morphological changes, SICM was used to scan the morphological change of human erythrocytes after the incorporation of exogenous dilauroylphosphatidylserine (DLPS) and the results revealed single cell dynamic morphological changes and the movement of spicules on the membrane surface.
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Affiliation(s)
- Cheng Zhu
- Department of Chemistry, Indiana University, 800 E. Kirkwood Avenue, Bloomington, Indiana 47405, USA.
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32
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Gundamaraju R, Vemuri R, Chong WC, Bulmer AC, Eri R. Bilirubin Attenuates ER Stress-Mediated Inflammation, Escalates Apoptosis and Reduces Proliferation in the LS174T Colonic Epithelial Cell Line. Int J Med Sci 2019; 16:135-144. [PMID: 30662337 PMCID: PMC6332492 DOI: 10.7150/ijms.29134] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/10/2018] [Accepted: 11/29/2018] [Indexed: 12/21/2022] Open
Abstract
Mildly elevated serum unconjugated bilirubin (UCB) concentrations are associated with protection against disease conditions underpinned by cellular and metabolic stress. To determine the potential therapeutic efficacy of UCB we tested it in an in vitro model of gut inflammation. Tunicamycin TUN (10 µg/mL) was used to induce endoplasmic reticular stress (ERS) affecting N-glycosylation in LS174T cells. Cultured cells were investigated with addition of UCB at doses 0.1, 1 and 10µM (resulting in bilirubin:albumin ratios of 0.325-0.003)against ER stress-mediated effects including inflammation, cell survival (determined by apoptosis) and proliferation. Gene expression of ER stress markers (Grp78, Perk, XBP1 and ATF6) were evaluated in addition to cytokine concentrations in media after six hours of treatment. We then verified the potential role of UCB in executing programmed cell death via PARP, Caspase3 and Annexin V assays and further explored cell proliferation using the Click-iT EdU assay. A dose of 10µM UCB most potently reduced tunicamycin-mediated effects on enhanced UPR markers, inflammatory cytokines and proliferation; however all the doses (i.e.0.1-10µM) reduced the expression of ER stress and inflammatory markers Grp78, NLRP3, IL1-b, XBP1, PERK and ATF6. Furthermore, media concentrations of pro-inflammatory cytokines IL-8, IL-4 and TNFα decreased and the anti-inflammatory cytokine IL-10 increased (P<0.05). A dose of 10µM UCB initiated intrinsic apoptosis via Caspase 3 and in addition reduced cellular proliferation. Collectively, these data indicate that co treatment with UCB resulted in reducing ER stress response to TUN in gastrointestinal epithelial cells, reduced the subsequent inflammatory response, induced cancer cell death and decreased cellular proliferation. These data suggest that mildly elevated circulating or enteric UCB might protect against gastrointestinal inflammatory disorders.
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Affiliation(s)
- Rohit Gundamaraju
- School of Health Sciences, University of Tasmania, Launceston, Tasmania, Australia
| | - Ravichandra Vemuri
- School of Health Sciences, University of Tasmania, Launceston, Tasmania, Australia
| | - Wai Chin Chong
- School of Health Sciences, University of Tasmania, Launceston, Tasmania, Australia
| | - Andrew Cameron Bulmer
- School of Medical Science and Menzies Health Institute Queensland, Griffith University, Gold Coast, Qld, Australia
| | - Rajaraman Eri
- School of Health Sciences, University of Tasmania, Launceston, Tasmania, Australia
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Fava A, Petri M. Systemic lupus erythematosus: Diagnosis and clinical management. J Autoimmun 2019; 96:1-13. [PMID: 30448290 PMCID: PMC6310637 DOI: 10.1016/j.jaut.2018.11.001] [Citation(s) in RCA: 330] [Impact Index Per Article: 66.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2018] [Revised: 11/01/2018] [Accepted: 11/01/2018] [Indexed: 12/12/2022]
Abstract
Systemic lupus erythematosus (SLE) is a worldwide chronic autoimmune disease which may affect every organ and tissue. Genetic predisposition, environmental triggers, and the hormonal milieu, interplay in disease development and activity. Clinical manifestations and the pattern of organ involvement are widely heterogenous, reflecting the complex mosaic of disrupted molecular pathways converging into the SLE clinical phenotype. The SLE complex pathogenesis involves multiple cellular components of the innate and immune systems, presence of autoantibodies and immunocomplexes, engagement of the complement system, dysregulation of several cytokines including type I interferons, and disruption of the clearance of nucleic acids after cell death. Use of immunomodulators and immunosuppression has altered the natural course of SLE. In addition, morbidity and mortality in SLE not only derive from direct immune mediated tissue damage but also from SLE and treatment associated complications such as accelerated coronary artery disease and increased infection risk. Here, we review the diagnostic approach as well as the etiopathogenetic rationale and clinical evidence for the management of SLE. This includes 1) lifestyle changes such as avoidance of ultraviolet light; 2) prevention of comorbidities including coronary artery disease, osteoporosis, infections, and drug toxicities; 3) use of immunomodulators (i.e. hydroxychloroquine and vitamin D); and 4) immunosuppressants and targeted therapy. We also review new upcoming agents and regimens currently under study.
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Affiliation(s)
- Andrea Fava
- Johns Hopkins University School of Medicine, 1830 East Monument Street, Suite 7500, Baltimore, MD 21205, USA
| | - Michelle Petri
- Johns Hopkins University School of Medicine, 1830 East Monument Street, Suite 7500, Baltimore, MD 21205, USA.
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34
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Datta A, Moitra S, Faruk SMO, Das PK, Mondal S, Hazra I, Basu AK, Tripathi SK, Chaudhuri S. Unravelling the apoptotic mechanisms in T-lymphocytes in an animal model for pollen induced airway allergy and studying the impact of specific immunotherapy. Immunobiology 2018; 224:183-195. [PMID: 30471949 DOI: 10.1016/j.imbio.2018.11.008] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2018] [Accepted: 11/13/2018] [Indexed: 10/27/2022]
Abstract
Asthma is a chronic inflammatory disorder of the airways, increasing in prevalence worldwide. Reduced T cell apoptosis may interfere with the down-regulation of an immune response resulting in T cell accumulation contributing to the chronic inflammation of asthma. Most studies focused so far on apoptosis of eosinophils but the detailed role of T lymphocytes apoptosis in allergic diseases is unclear yet. The present experimental study was designed to discern the modulation of various apoptotic proteins of splenic T lymphocytes in a previously established rat model of Alstonia scholaris pollen induced airway allergy. Flowcytometry, immunoblotting, and immunofluorescence imaging techniques were employed for the present investigation. Annexin-V studies registered early apoptotic rate of lymphocytes with allergen sensitization and challenge which was corrected following mucosal immunotherapy. The study demonstrates that allergen sensitization and challenge reduced apoptosis of splenic T-lymphocytes via Fas mediated extrinsic pathway, Bax/Bcl2 regulated intrinsic pathway and also perforin/granzyme mediated pathway which were normalized following allergen specific intranasal immunotherapy. Inadequate T cell apoptosis in asthma appears to interfere with normal T cell elimination, resulting in T cell accumulation, which contributes to chronic inflammation and may be the major underlying cause for tissue damage which can be modulated by intranasal immunotherapy. Thus the apoptosis inducing effect of allergen immunotherapy necessitates more studies to elaborate on its effects on various effector cells of airway inflammation.
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Affiliation(s)
- Ankur Datta
- Department of Laboratory Medicine, School of Tropical Medicine, 108 C. R. Avenue, Kolkata, 700073, West Bengal, India; Department of Clinical & Experimental Pharmacology, School of Tropical Medicine, 108 C. R. Avenue, Kolkata, 700073, West Bengal, India
| | - Saibal Moitra
- Department of Laboratory Medicine, School of Tropical Medicine, 108 C. R. Avenue, Kolkata, 700073, West Bengal, India
| | - Sk Md Omar Faruk
- Department of Laboratory Medicine, School of Tropical Medicine, 108 C. R. Avenue, Kolkata, 700073, West Bengal, India
| | - Prasanta K Das
- Department of Laboratory Medicine, School of Tropical Medicine, 108 C. R. Avenue, Kolkata, 700073, West Bengal, India
| | - Somnath Mondal
- Department of Laboratory Medicine, School of Tropical Medicine, 108 C. R. Avenue, Kolkata, 700073, West Bengal, India; Department of Clinical & Experimental Pharmacology, School of Tropical Medicine, 108 C. R. Avenue, Kolkata, 700073, West Bengal, India
| | - Iman Hazra
- Department of Laboratory Medicine, School of Tropical Medicine, 108 C. R. Avenue, Kolkata, 700073, West Bengal, India
| | - Anjan K Basu
- Department of Biochemistry & Medical Biotechnology, School of Tropical Medicine, 108 C. R. Avenue, Kolkata, 700073, West Bengal, India
| | - Santanu K Tripathi
- Department of Clinical & Experimental Pharmacology, School of Tropical Medicine, 108 C. R. Avenue, Kolkata, 700073, West Bengal, India
| | - Swapna Chaudhuri
- Department of Laboratory Medicine, School of Tropical Medicine, 108 C. R. Avenue, Kolkata, 700073, West Bengal, India.
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Janani MK, Jaichandran V, Madhavan HNR, Vijaya L, George RJ, Ambastha PS, Manu A, Malathi J. Effect of Lignocaine Concentration on Human Fibroblasts Growth in Eyes Undergoing Trabeculectomy: An in vitro Study. Biomed Hub 2018; 3:1-10. [PMID: 31988963 PMCID: PMC6945966 DOI: 10.1159/000491074] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2017] [Accepted: 06/19/2018] [Indexed: 12/17/2022] Open
Abstract
Purpose To evaluate the effect of lignocaine on growth and apoptosis indication of primary human Tenon's capsule fibroblast (HTFs) in an in vitro model. Patients and Methods Tenon's capsule tissue obtained from patients undergoing trabeculectomy were grown in cell culture medium. The effect of different concentrations of lignocaine (0.5, 1.0, 1.5, and 2%) on the morphology and growth of the fibroblasts was studied using microscopy, cell viability, and proliferation assay, and apoptosis was detected using the FITC Annexin V Apoptosis Kit. Results Morphological changes similar to those of apoptotic cells, including cytoplasmic vacuolation, shrinkage, and rounding were visualized in the cells treated with concentrations greater than 1.0% (i.e., 1.5, 2.0%). Though proliferation inhibition was found with all four concentrations (0.5–2.0%), the viability of cells decreased from 1.0% lignocaine. Conclusion 0.5% lignocaine prevents proliferation of fibroblasts without causing apoptosis in vitro.
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Affiliation(s)
| | | | | | - Lingam Vijaya
- Department of Glaucoma, Vision Research Foundation, Sankara Nethralaya, Chennai, India
| | - Ronnie Jacob George
- Department of Glaucoma, Vision Research Foundation, Sankara Nethralaya, Chennai, India
| | | | - Abhijeet Manu
- Birla Institute of Technology & Science, Pilani, India
| | - Jambulingam Malathi
- L&T Microbiology Research Centre, Vision Research Foundation, Chennai, India
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GSK461364A, a Polo-Like Kinase-1 Inhibitor Encapsulated in Polymeric Nanoparticles for the Treatment of Glioblastoma Multiforme (GBM). Bioengineering (Basel) 2018; 5:bioengineering5040083. [PMID: 30304810 PMCID: PMC6315921 DOI: 10.3390/bioengineering5040083] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2018] [Revised: 10/04/2018] [Accepted: 10/06/2018] [Indexed: 12/11/2022] Open
Abstract
Glioblastoma Multiforme (GBM) is a common primary brain cancer with a poor prognosis and a median survival of less than 14 months. Current modes of treatment are associated with deleterious side effects that reduce the life span of the patients. Nanomedicine enables site-specific delivery of active pharmaceutical ingredients and facilitates entrapment inside the tumor. Polo-like kinase 1 (PLK-1) inhibitors have shown promising results in tumor cells. GSK461364A (GSK) is one such targeted inhibitor with reported toxicity issues in phase 1 clinical trials. We have demonstrated in our study that the action of GSK is time dependent across all concentrations. There is a distinct 15−20% decrease in cell viability via apoptosis in U87-MG cells dosed with GSK at low concentrations (within the nanomolar and lower micromolar range) compared to higher concentrations of the drug. Additionally, we have confirmed that PLGA-PEG nanoparticles (NPs) containing GSK have shown significant reduction in cell viability of tumor cells compared to their free equivalents. Thus, this polymeric nanoconstruct encapsulating GSK can be effective even at low concentrations and could improve the effectiveness of the drug while reducing side effects at the lower effective dose. This is the first study to report a PLK-1 inhibitor (GSK) encapsulated in a nanocarrier for cancer applications.
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Zidan AAA, El-Ashmawy NE, Khedr EG, Ebeid EZM, Salem ML, Mosalam EM. Loading of doxorubicin and thymoquinone with F2 gel nanofibers improves the antitumor activity and ameliorates doxorubicin-associated nephrotoxicity. Life Sci 2018; 207:461-470. [PMID: 29885348 DOI: 10.1016/j.lfs.2018.06.008] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2018] [Accepted: 06/05/2018] [Indexed: 02/07/2023]
Abstract
AIMS This study aimed to elucidate the benefits of nanoformulation of doxorubicin (DOX) and thymoquinone (TQ) loaded with nanofibers of poly-N-acetyl glucosamine (pGlcNAc), which is known as F2 gel, over their conventional free forms. Moreover, evaluate the role of TQ in improving chemotherapeutic effect and ameliorating nephrotoxicity of DOX. MAIN METHODS The drugs were loaded into F2 gel followed by measurement of physicochemical characterization. Next, MCF-7 and HEPG2 cells were treated with the prepared formulations and assessed for apoptosis alongside with cellular proliferation. Furthermore, we experimentally induced Heps liver carcinoma in mice and at the end of the treatment, mice were sacrificed and serum samples were used to assess nephrotoxicity markers; blood urea nitrogen (BUN) and creatinine. Additionally, renal tissue was used for determination of oxidative markers and antioxidant enzymes; whereas, tumor tissue was utilized to measure nuclear factor kappa B (NF-κB) and caspase 3. KEY FINDINGS Nanoformulation showed dramatic increase in apoptosis, caspase 3, and antioxidant enzymes; in contrast to, dramatic fall in cell viability, tumor volume, oxidative and nephrotoxicity markers, and NF-κB compared to corresponding free therapies. Combined therapy was superior in conserving the measured parameters compared to other treated groups. SIGNIFICANCE F2 gel loaded with DOX and TQ revealed enhanced antitumor activity with minimal toxicity. Moreover, using TQ as an adjuvant with DOX could augment its cytotoxicity and ameliorate nephrotoxicity.
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Affiliation(s)
- Abdel-Aziz A Zidan
- Zoology Department, Faculty of Science, Damanhour University, Egypt; Center of Excellence in cancer Research (CECR), Tanta University, Tanta, Egypt.
| | | | - Eman G Khedr
- Biochemistry Department, Faculty of Pharmacy, Tanta University, Egypt
| | - El-Zeiny M Ebeid
- Physical Chemistry Department, Faculty of Science, Tanta University, Egypt
| | - Mohamed L Salem
- Immunology and Biotechnology Unit, Zoology Department, Faculty of Science, Tanta University, Egypt
| | - Esraa M Mosalam
- Biochemistry Department, Faculty of Pharmacy, Menoufia University, Egypt
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Kapoor S, Opneja A, Nayak L. The role of neutrophils in thrombosis. Thromb Res 2018; 170:87-96. [PMID: 30138777 DOI: 10.1016/j.thromres.2018.08.005] [Citation(s) in RCA: 94] [Impact Index Per Article: 15.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2018] [Revised: 07/30/2018] [Accepted: 08/08/2018] [Indexed: 02/07/2023]
Abstract
Despite significant evidence implicating an important role for neutrophils in thrombosis, their impact on the thrombotic process has remained a matter of controversy. Until 2010, platelets, coagulation factors, fibrinogen and monocytes were implicated in the thrombotic process. Several studies conducted over the last decade now support the growing notion that neutrophils indeed do contribute significantly to this process. Neutrophils can contribute to pathologic venous and arterial thrombosis or 'immunothrombosis' by the release of neutrophil extracellular traps (NETs) and NET release is emerging as a major contributor to thrombogenesis in pathologic situations such as sepsis and malignancy. Further, blood-cell derived microparticles, including those from neutrophils, have been implicated in thrombus formation. Finally, inflammasome activation in the neutrophil identifies another important mechanism that may be operative in neutrophil-driven risk for thrombosis. The knowledge of these roles of neutrophils in thrombosis may pave the road for novel anti-thrombotic agents in the future that do not affect hemostasis.
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Affiliation(s)
- Sargam Kapoor
- University Hospitals Cleveland Medical Center, Division of Hematology and Oncology, United States; Case Western Reserve University, Department of Medicine, United States
| | - Aman Opneja
- University Hospitals Cleveland Medical Center, Division of Hematology and Oncology, United States; Case Western Reserve University, Department of Medicine, United States
| | - Lalitha Nayak
- University Hospitals Cleveland Medical Center, Division of Hematology and Oncology, United States; Case Western Reserve University, Department of Medicine, United States.
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39
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Lou H, Pickering MC. Extracellular DNA and autoimmune diseases. Cell Mol Immunol 2018; 15:746-755. [PMID: 29553134 PMCID: PMC6141478 DOI: 10.1038/cmi.2017.136] [Citation(s) in RCA: 31] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2017] [Revised: 10/23/2017] [Accepted: 10/23/2017] [Indexed: 01/02/2023] Open
Abstract
Extracellular DNA is secreted from various sources including apoptotic cells, NETotic neutrophils and bacterial biofilms. Extracellular DNA can stimulate innate immune responses to induce type-I IFN production after being endocytosed. This process is central in antiviral responses but it also plays important role in the pathogenesis of a range of autoimmune diseases such as systemic lupus erythematosus. We discuss the recent advances in the understanding of the role of extracellular DNA, released from apoptotic and NETotic cells, in autoimmunity.
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Affiliation(s)
- Hantao Lou
- Molecular Immunology, Imperial College London, London, UK, W12 0NN.
| | - Matthew C Pickering
- Centre for Complement and Inflammation Research, Imperial College London, London, UK, W12 0NN
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40
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Datta A, Moitra S, Das PK, Mondal S, Omar Faruk SM, Hazra I, Tripathi SK, Chaudhuri S. Allergen immunotherapy modulates sensitivity of Treg cells to apoptosis in a rat model of allergic asthma. Immunotherapy 2018; 9:1239-1251. [PMID: 29130799 DOI: 10.2217/imt-2017-0038] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022] Open
Abstract
AIM To study the apoptosis of Foxp3+ Treg cells following Alstonia scholaris pollen sensitization-challenge and following allergen immunotherapy. MATERIALS & METHODS Wistar rats were sensitized-challenged with Alstonia scholaris pollen and were further given intranasal immunotherapy. For the analysis of the apoptotic proteins on Treg cells by flow cytometry, multiple gating procedures were followed. RESULTS Allergen sensitization-challenge increases Annexin-V, Fas, FasL, caspases-8, 9, 3 cytochrome-C, APAF-1, Bax, perforin-1 and granzyme-B on Treg cells which is decreased following intranasal immunotherapy. On the other hand, Bcl-2 expression is decreased in allergy and increased by immunotherapy. CONCLUSION Apoptosis of Treg cells is increased following allergen sensitization-challenge via extrinsic, intrinsic and perforin/granzyme pathways and allergen immunotherapy decreased the sensitivity to apoptosis of Treg cells.
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Affiliation(s)
- Ankur Datta
- Department of Laboratory Medicine, School of Tropical Medicine, 108 C R Avenue, Kolkata 700073, West Bengal, India
| | - Saibal Moitra
- Department of Laboratory Medicine, School of Tropical Medicine, 108 C R Avenue, Kolkata 700073, West Bengal, India
| | - Prasanta K Das
- Department of Laboratory Medicine, School of Tropical Medicine, 108 C R Avenue, Kolkata 700073, West Bengal, India
| | - Somnath Mondal
- Department of Laboratory Medicine, School of Tropical Medicine, 108 C R Avenue, Kolkata 700073, West Bengal, India
| | - Sk Md Omar Faruk
- Department of Laboratory Medicine, School of Tropical Medicine, 108 C R Avenue, Kolkata 700073, West Bengal, India
| | - Iman Hazra
- Department of Laboratory Medicine, School of Tropical Medicine, 108 C R Avenue, Kolkata 700073, West Bengal, India
| | - Santanu K Tripathi
- Department of Clinical & Experimental Pharmacology, School of Tropical Medicine, 108 C R Avenue, Kolkata 700073, West Bengal, India
| | - Swapna Chaudhuri
- Department of Laboratory Medicine, School of Tropical Medicine, 108 C R Avenue, Kolkata 700073, West Bengal, India
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41
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Zhou Z, Liu J, Rees TW, Wang H, Li X, Chao H, Stang PJ. Heterometallic Ru-Pt metallacycle for two-photon photodynamic therapy. Proc Natl Acad Sci U S A 2018; 115:5664-5669. [PMID: 29760069 PMCID: PMC5984529 DOI: 10.1073/pnas.1802012115] [Citation(s) in RCA: 114] [Impact Index Per Article: 19.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023] Open
Abstract
As an effective and noninvasive treatment of various diseases, photodynamic therapy (PTD) relies on the combination of light, a photosensitizer, and oxygen to generate cytotoxic reactive oxygen species that can damage malignant tissue. Much attention has been paid to covalent modifications of the photosensitizers to improve their photophysical properties and to optimize the pathway of the photosensitizers interacting with cells within the target tissue. Herein we report the design and synthesis of a supramolecular heterometallic Ru-Pt metallacycle via coordination-driven self-assembly. While inheriting the excellent photostability and two-photon absorption characteristics of the Ru(II) polypyridyl precursor, the metallacycle also exhibits red-shifted luminescence to the near-infrared region, a larger two-photon absorption cross-section, and higher singlet oxygen generation efficiency, making it an excellent candidate as a photosensitizer for PTD. Cellular studies reveal that the metallacycle selectively accumulates in mitochondria and nuclei upon internalization. As a result, singlet oxygen generated by photoexcitation of the metallacycle can efficiently trigger cell death via the simultaneous damage to mitochondrial function and intranuclear DNA. In vivo studies on tumor-bearing mice show that the metallacycle can efficiently inhibit tumor growth under a low light dose with minimal side effects. The supramolecular approach presented in this work provides a paradigm for the development of PDT agents with high efficacy.
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Affiliation(s)
- Zhixuan Zhou
- Department of Chemistry, University of Utah, Salt Lake City, UT 84112
| | - Jiangping Liu
- MOE Key Laboratory of Bioinorganic and Synthetic Chemistry, School of Chemistry, Sun Yat-sen University, 510275 Guangzhou, People's Republic of China
| | - Thomas W Rees
- MOE Key Laboratory of Bioinorganic and Synthetic Chemistry, School of Chemistry, Sun Yat-sen University, 510275 Guangzhou, People's Republic of China
| | - Heng Wang
- Department of Chemistry, University of South Florida, Tampa, FL 33620
| | - Xiaopeng Li
- Department of Chemistry, University of South Florida, Tampa, FL 33620
| | - Hui Chao
- MOE Key Laboratory of Bioinorganic and Synthetic Chemistry, School of Chemistry, Sun Yat-sen University, 510275 Guangzhou, People's Republic of China;
| | - Peter J Stang
- Department of Chemistry, University of Utah, Salt Lake City, UT 84112;
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Cardinal H, Dieudé M, Hébert MJ. Endothelial Dysfunction in Kidney Transplantation. Front Immunol 2018; 9:1130. [PMID: 29875776 PMCID: PMC5974048 DOI: 10.3389/fimmu.2018.01130] [Citation(s) in RCA: 34] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2017] [Accepted: 05/04/2018] [Indexed: 12/17/2022] Open
Abstract
Kidney transplantation entails a high likelihood of endothelial injury. The endothelium is a target of choice for injury by ischemia-reperfusion, alloantibodies, and autoantibodies. A certain degree of ischemia-reperfusion injury inevitably occurs in the immediate posttransplant setting and can manifest as delayed graft function. Acute rejection episodes, whether T-cell or antibody-mediated, can involve the graft micro- and macrovasculature, leading to endothelial injury and adverse long-term consequences on graft function and survival. In turn, caspase-3 activation in injured and dying endothelial cells favors the release of extracellular vesicles (apoptotic bodies and apoptotic exosome-like vesicles) that further enhance autoantibody production, complement deposition, and microvascular rarefaction. In this review, we present the evidence for endothelial injury, its causes and long-term consequences on graft outcomes in the field of kidney transplantation.
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Affiliation(s)
- Héloïse Cardinal
- Research Centre, Centre hospitalier de l'Université de Montréal (CRCHUM), Montreal, QC, Canada.,Canadian National Transplant Research Program, Montreal, QC, Canada.,University of Montreal, Montreal, QC, Canada
| | - Mélanie Dieudé
- Research Centre, Centre hospitalier de l'Université de Montréal (CRCHUM), Montreal, QC, Canada.,Canadian National Transplant Research Program, Montreal, QC, Canada
| | - Marie-Josée Hébert
- Research Centre, Centre hospitalier de l'Université de Montréal (CRCHUM), Montreal, QC, Canada.,Canadian National Transplant Research Program, Montreal, QC, Canada.,University of Montreal, Montreal, QC, Canada
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43
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Discovery of thinopyrimidine-triazole conjugates as c-Met targeting and apoptosis inducing agents. Bioorg Chem 2018; 77:370-380. [PMID: 29421713 DOI: 10.1016/j.bioorg.2018.01.037] [Citation(s) in RCA: 26] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2017] [Revised: 01/22/2018] [Accepted: 01/27/2018] [Indexed: 12/22/2022]
Abstract
Five series of N-methylpicolinamide moiety and thienopyrimidine moiety bearing triazole (21-26, 27-34, 35-41, 42-47 and 48-54) were designed and synthesized. And all the target compounds were evaluated for the IC50 values against three cancer cell lines (A549, HepG2 and MCF-7) and some selected compounds (43, 49 and 52) were further evaluated for the activity against c-Met, Flt-3, VEGFR-2, c-Kit and EGFR kinases. Moreover, SARs and docking studies indicated that thieno[3,2-d]pyrimidine bearing triazole moiety was privileged structure for the activity. Especially, the Cl atom on the 4-C position of aryl group showed the best activity. The most promising compound 49 showed 3.7-5.4-fold more activity than the lead drug Foretinib against A549, HepG2 and MCF-7 cell lines, with the IC50 values of 0.9 ± 0.1 µM, 0.5 ± 0.1 µM and 1.1 ± 0.2 µM, respectively. And The experiments of enzyme-based showed that 49 inhibitor the c-Met selectively, with the IC50 values of 16 nM, which showed equal activity to Foretinib (14 nM). What's more, According to the result of AO single staining and Annexin V/PI staining, it's claimed that the 49 could induce late apoptosis of HepG2 cells and by a concentration-dependent manner.
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44
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Abstract
Heat shock proteins are well-known protectors from cell death. Cell death (in particular, apoptosis and necrosis) is accompanied by certain hallmarks manifested as specific alterations in cellular membranes, cytoplasm, nucleus, and mitochondria. Some of those hallmarks are easily detectable in situ and, therefore, they can be applied for the assessment of dying or dead cells. In turn, there are also signs of viable cells that include such features as normal functioning of their membranes and organelles, ability to proliferate, etc. This chapter describes several convenient methods for quantification of dead (apoptotic and necrotic) cells as well as methods for assessment of viable cells. We describe in detail methods of annexin V/propidium iodide (PI) staining, TUNEL assay, Hoechst/PI staining, caspase activation, MTS tetrazolium, lactate dehydrogenase (LDH) release, colony formation, and senescence assays, with the principles, advantages, and drawbacks of each technique.
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Affiliation(s)
- Alexander E Kabakov
- Department of Radiation Biochemistry, A. Tsyb Medical Radiology Research Center, Obninsk, 249036, Russia.
| | - Vladimir L Gabai
- Department of Biochemistry, Boston University Medical School, Boston, MA, 02118, USA.
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45
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Wan J, Sun L, Wu P, Wang F, Guo J, Cheng J, Wang C. Synthesis of indocyanine green functionalized comblike poly(aspartic acid) derivatives for enhanced cancer cell ablation by targeting the endoplasmic reticulum. Polym Chem 2018. [DOI: 10.1039/c7py01994g] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
PTX-loaded comblike polymer PAsp-g-(PEG-ICG) micelles can effectively kill cancer cells via elevated endoplasmic reticulum stress under laser irradiation.
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Affiliation(s)
- Jiaxun Wan
- State Key Laboratory of Molecular Engineering of Polymers and Department of Macromolecular Science
- Fudan University
- Shanghai 200433
- P.R. China
| | - Luyan Sun
- State Key Laboratory of Molecular Engineering of Polymers and Department of Macromolecular Science
- Fudan University
- Shanghai 200433
- P.R. China
| | - Pan Wu
- State Key Laboratory of Molecular Engineering of Polymers and Department of Macromolecular Science
- Fudan University
- Shanghai 200433
- P.R. China
| | - Fang Wang
- State Key Laboratory of Molecular Engineering of Polymers and Department of Macromolecular Science
- Fudan University
- Shanghai 200433
- P.R. China
| | - Jia Guo
- State Key Laboratory of Molecular Engineering of Polymers and Department of Macromolecular Science
- Fudan University
- Shanghai 200433
- P.R. China
| | - Jianjun Cheng
- Department of Materials Science and Engineering
- University of Illinois at Urbana–Champaign
- Urbana
- USA
| | - Changchun Wang
- State Key Laboratory of Molecular Engineering of Polymers and Department of Macromolecular Science
- Fudan University
- Shanghai 200433
- P.R. China
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46
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Synthesis and bioevaluation study of novel N -methylpicolinamide and thienopyrimidine derivatives as selectivity c-Met kinase inhibitors. Bioorg Med Chem 2018; 26:245-256. [DOI: 10.1016/j.bmc.2017.11.039] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2017] [Revised: 11/20/2017] [Accepted: 11/24/2017] [Indexed: 11/22/2022]
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47
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Johnson TP, Tyagi R, Lee PR, Lee MH, Johnson KR, Kowalak J, Elkahloun A, Medynets M, Hategan A, Kubofcik J, Sejvar J, Ratto J, Bunga S, Makumbi I, Aceng JR, Nutman TB, Dowell SF, Nath A. Nodding syndrome may be an autoimmune reaction to the parasitic worm Onchocerca volvulus. Sci Transl Med 2017; 9:9/377/eaaf6953. [PMID: 28202777 DOI: 10.1126/scitranslmed.aaf6953] [Citation(s) in RCA: 101] [Impact Index Per Article: 14.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2016] [Accepted: 11/17/2016] [Indexed: 12/16/2022]
Abstract
Nodding syndrome is an epileptic disorder of unknown etiology that occurs in children in East Africa. There is an epidemiological association with Onchocerca volvulus, the parasitic worm that causes onchocerciasis (river blindness), but there is limited evidence that the parasite itself is neuroinvasive. We hypothesized that nodding syndrome may be an autoimmune-mediated disease. Using protein chip methodology, we detected autoantibodies to leiomodin-1 more abundantly in patients with nodding syndrome compared to unaffected controls from the same village. Leiomodin-1 autoantibodies were found in both the sera and cerebrospinal fluid of patients with nodding syndrome. Leiomodin-1 was found to be expressed in mature and developing human neurons in vitro and was localized in mouse brain to the CA3 region of the hippocampus, Purkinje cells in the cerebellum, and cortical neurons, structures that also appear to be affected in patients with nodding syndrome. Antibodies targeting leiomodin-1 were neurotoxic in vitro, and leiomodin-1 antibodies purified from patients with nodding syndrome were cross-reactive with O. volvulus antigens. This study provides initial evidence supporting the hypothesis that nodding syndrome is an autoimmune epileptic disorder caused by molecular mimicry with O. volvulus antigens and suggests that patients may benefit from immunomodulatory therapies.
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Affiliation(s)
- Tory P Johnson
- Section of Infections of the Nervous System, National Institute of Neurological Disorders and Stroke, National Institutes of Health, Bethesda, MD 20892, USA
| | - Richa Tyagi
- Section of Infections of the Nervous System, National Institute of Neurological Disorders and Stroke, National Institutes of Health, Bethesda, MD 20892, USA
| | - Paul R Lee
- Section of Infections of the Nervous System, National Institute of Neurological Disorders and Stroke, National Institutes of Health, Bethesda, MD 20892, USA
| | - Myoung-Hwa Lee
- Section of Infections of the Nervous System, National Institute of Neurological Disorders and Stroke, National Institutes of Health, Bethesda, MD 20892, USA
| | - Kory R Johnson
- Bioinformatics Section, National Institute of Neurological Disorders and Stroke, National Institutes of Health, Bethesda, MD 20892, USA
| | - Jeffrey Kowalak
- Clinical Proteomics Unit, National Institute of Neurological Disorders and Stroke, National Institutes of Health, Bethesda, MD 20892, USA
| | - Abdel Elkahloun
- Microarray Core Facility, National Human Genome Research Institute, National Institutes of Health, Bethesda, MD 20892, USA
| | - Marie Medynets
- Neural Differentiation Unit, National Institute of Neurological Disorders and Stroke, National Institutes of Health, Bethesda, MD 20892, USA
| | - Alina Hategan
- Section of Infections of the Nervous System, National Institute of Neurological Disorders and Stroke, National Institutes of Health, Bethesda, MD 20892, USA
| | - Joseph Kubofcik
- Helminth Immunology Section, Laboratory of Parasitic Diseases, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, MD 20892, USA
| | - James Sejvar
- Division of High-Consequence Pathogens and Pathology, National Center for Emerging and Zoonotic Infectious Diseases, Centers for Disease Control and Prevention, Atlanta, GA 30333, USA
| | - Jeffrey Ratto
- Division of Global Health Protection, Center for Global Health, Centers for Disease Control and Prevention, Atlanta, GA 30333, USA
| | - Sudhir Bunga
- Division of Global Health Protection, Center for Global Health, Centers for Disease Control and Prevention, Atlanta, GA 30333, USA
| | | | | | - Thomas B Nutman
- Helminth Immunology Section, Laboratory of Parasitic Diseases, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, MD 20892, USA
| | | | - Avindra Nath
- Section of Infections of the Nervous System, National Institute of Neurological Disorders and Stroke, National Institutes of Health, Bethesda, MD 20892, USA.
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48
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CSF tau is associated with impaired cortical plasticity, cognitive decline and astrocyte survival only in APOE4-positive Alzheimer's disease. Sci Rep 2017; 7:13728. [PMID: 29062035 PMCID: PMC5653826 DOI: 10.1038/s41598-017-14204-3] [Citation(s) in RCA: 50] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2017] [Accepted: 10/03/2017] [Indexed: 11/19/2022] Open
Abstract
In Alzheimer’s disease (AD) patients, apopoliprotein (APOE) polymorphism is the main genetic factor associated with more aggressive clinical course. However, the interaction between cerebrospinal fluid (CSF) tau protein levels and APOE genotype has been scarcely investigated. A possible key mechanism invokes the dysfunction of synaptic plasticity. We investigated how CSF tau interacts with APOE genotype in AD patients. We firstly explored whether CSF tau levels and APOE genotype influence disease progression and long-term potentiation (LTP)-like cortical plasticity as measured by transcranial magnetic stimulation (TMS) in AD patients. Then, we incubated normal human astrocytes (NHAs) with CSF collected from sub-groups of AD patients to determine whether APOE genotype and CSF biomarkers influence astrocytes survival. LTP-like cortical plasticity differed between AD patients with apolipoprotein E4 (APOE4) and apolipoprotein E3 (APOE3) genotype. Higher CSF tau levels were associated with more impaired LTP-like cortical plasticity and faster disease progression in AD patients with APOE4 but not APOE3 genotype. Apoptotic activity was higher when cells were incubated with CSF from AD patients with APOE4 and high tau levels. CSF tau is detrimental on cortical plasticity, disease progression and astrocyte survival only when associated with APOE4 genotype. This is relevant for new therapeutic approaches targeting tau.
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49
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Boroumand Moghaddam A, Moniri M, Azizi S, Abdul Rahim R, Bin Ariff A, Navaderi M, Mohamad R. Eco-Friendly Formulated Zinc Oxide Nanoparticles: Induction of Cell Cycle Arrest and Apoptosis in the MCF-7 Cancer Cell Line. Genes (Basel) 2017; 8:genes8100281. [PMID: 29053567 PMCID: PMC5664131 DOI: 10.3390/genes8100281] [Citation(s) in RCA: 61] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2017] [Revised: 09/24/2017] [Accepted: 10/06/2017] [Indexed: 11/19/2022] Open
Abstract
Green products have strong potential in the discovery and development of unique drugs. Zinc oxide nanoparticles (ZnO NPs) have been observed to have powerful cytotoxicity against cells that cause breast cancer. The present study aims to examine the cell cycle profile, status of cell death, and pathways of apoptosis in breast cancer cells (MCF-7) treated with biosynthesized ZnO NPs. The anti-proliferative activity of ZnO NPs was determined using MTT assay. Cell cycle analysis and the mode of cell death were evaluated using a flow cytometry instrument. Quantitative real-time-PCR (qRT-PCR) was employed to investigate the expression of apoptosis in MCF-7 cells. ZnO NPs were cytotoxic to the MCF-7 cells in a dose-dependent manner. The 50% growth inhibition concentration (IC50) of ZnO NPs at 24 h was 121 µg/mL. Cell cycle analysis revealed that ZnO NPs induced sub-G1 phase (apoptosis), with values of 1.87% at 0 μg/mL (control), 71.49% at IC25, 98.91% at IC50, and 99.44% at IC75. Annexin V/propidium iodide (PI) flow cytometry analysis confirmed that ZnO NPs induce apoptosis in MCF-7 cells. The pro-apoptotic genes p53, p21, Bax, and JNK were upregulated, whereas anti-apoptotic genes Bcl-2, AKT1, and ERK1/2 were downregulated in a dose-dependent manner. The arrest and apoptosis of MCF-7 cells were induced by ZnO NPs through several signalling pathways.
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Affiliation(s)
- Amin Boroumand Moghaddam
- Department of Bioprocess Technology, Faculty of Biotechnology and Biomolecular Sciences, Universiti Putra Malaysia, 43400 UPM Serdang, Selangor, Malaysia.
- Young Research and Elite Club, Sabzevar Branch, Islamic Azad University, Sabzevar, Iran.
| | - Mona Moniri
- Department of Bioprocess Technology, Faculty of Biotechnology and Biomolecular Sciences, Universiti Putra Malaysia, 43400 UPM Serdang, Selangor, Malaysia.
- Young Research and Elite Club, Sabzevar Branch, Islamic Azad University, Sabzevar, Iran.
| | - Susan Azizi
- Department of Bioprocess Technology, Faculty of Biotechnology and Biomolecular Sciences, Universiti Putra Malaysia, 43400 UPM Serdang, Selangor, Malaysia.
| | - Raha Abdul Rahim
- Department of Cell and Molecular Biology, Faculty of Biotechnology and Biomolecular Sciences, Universiti Putra Malaysia, 43400 UPM Serdang, Selangor, Malaysia.
| | - Arbakariya Bin Ariff
- Department of Bioprocess Technology, Faculty of Biotechnology and Biomolecular Sciences, Universiti Putra Malaysia, 43400 UPM Serdang, Selangor, Malaysia.
- Bioprocessing and Biomanufacturing Research Centre, Faculty of Biotechnology and Biomolecular Sciences, Universiti Putra Malaysia, 43400 UPM Serdang, Selangor, Malaysia.
| | - Mohammad Navaderi
- Young Research and Elite Club, Parand Branch, Islamic Azad University, Parand, Iran.
| | - Rosfarizan Mohamad
- Department of Bioprocess Technology, Faculty of Biotechnology and Biomolecular Sciences, Universiti Putra Malaysia, 43400 UPM Serdang, Selangor, Malaysia.
- Institute of Tropical Forestry and Forest Products, Universiti Putra Malaysia, 43400 UPM Serdang, Selangor, Malaysia.
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50
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Yang A, Chen F, He C, Zhou J, Lu Y, Dai J, Birge RB, Wu Y. The Procoagulant Activity of Apoptotic Cells Is Mediated by Interaction with Factor XII. Front Immunol 2017; 8:1188. [PMID: 28993777 PMCID: PMC5622377 DOI: 10.3389/fimmu.2017.01188] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2017] [Accepted: 09/07/2017] [Indexed: 11/13/2022] Open
Abstract
Apoptotic cells, by externalizing phosphatidylserine (PS) as a hallmark feature, are procoagulant. However, the mechanism by which apoptotic cells activate coagulation system remains unknown. Intrinsic coagulation pathway is initiated by coagulation factor XII (FXII) of contact activation system. The purpose of this study was to determine whether FXII is involved in procoagulant activity of apoptotic cells. Using western blotting and chromogenic substrate assay, we found that incubation with apoptotic cells, but not with viable cells, resulted in rapid cleavage and activation of FXII in the presence of prekallikrein and high molecular weight kininogen (HK), other two components of contact activation system. As detected by flow cytometry, FXII bound to apoptotic cells in a concentration-dependent manner, which was inhibited by annexin V and PS liposome. Direct association of FXII with PS was confirmed in a surface plasmon resonance assay. Clotting time of FXII-deficient plasma induced by apoptotic cells was significantly prolonged, which was fully reversed by replenishment with FXII. Corn trypsin inhibitor, a FXII inhibitor, completely prevented apoptotic cells-induced intrinsic tenase complex formation. Consistently, apoptotic cells significantly increased thrombin production in normal plasma, which was not affected by an inhibitory anti-tissue factor antibody. However, blocking of PS by annexin V, inhibition of FXII, or the deficiency of FXII suppressed apoptotic cells-induced thrombin generation. Addition of purified FXII to FXII-deficient plasma recovered thrombin generation to the normal plasma level. In conclusion, FXII binds to apoptotic cells via PS and becomes activated, thereby constituting a novel mechanism mediating the procoagulant activity of apoptotic cells.
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Affiliation(s)
- Aizhen Yang
- Cyrus Tang Hematology Center, Collaborative Innovation Center of Hematology, Soochow University, Suzhou, China
| | - Fengwu Chen
- Cyrus Tang Hematology Center, Collaborative Innovation Center of Hematology, Soochow University, Suzhou, China
| | - Chao He
- Cyrus Tang Hematology Center, Collaborative Innovation Center of Hematology, Soochow University, Suzhou, China
| | - Junsong Zhou
- Cyrus Tang Hematology Center, Collaborative Innovation Center of Hematology, Soochow University, Suzhou, China.,The Sol Sherry Thrombosis Research Center, Temple University School of Medicine, Philadelphia, PA, United States
| | - Yi Lu
- Wuhan Thalys Medical Technology Inc., Wuhan, China
| | - Jihong Dai
- The Sol Sherry Thrombosis Research Center, Temple University School of Medicine, Philadelphia, PA, United States.,Department of Pathology and Laboratory Medicine, Rutgers University-New Jersey Medical School, Newark, NJ, United States
| | - Raymond B Birge
- Department of Microbiology, Biochemistry and Molecular Genetics, Rutgers University-New Jersey Medical School, Newark, NJ, United States
| | - Yi Wu
- Cyrus Tang Hematology Center, Collaborative Innovation Center of Hematology, Soochow University, Suzhou, China.,The Sol Sherry Thrombosis Research Center, Temple University School of Medicine, Philadelphia, PA, United States
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