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Öğüten PN, Engür Öztürk S, Dikmen M. The investigation of cytotoxic and apoptotic activity of Cl-amidine on the human U-87 MG glioma cell line. Medicine (Baltimore) 2024; 103:e37015. [PMID: 38394536 DOI: 10.1097/md.0000000000037015] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/25/2024] Open
Abstract
BACKGROUND Peptidyl (protein) arginine deiminases (PADs) provide the transformation of peptidyl arginine to peptidyl citrulline in the presence of calcium with posttranslational modification. The dysregulated PAD activity plays an important role on too many diseases including also the cancer. In this study, it has been aimed to determine the potential cytotoxic and apoptotic activity of chlorine-amidine (Cl-amidine) which is a PAD inhibitor and whose effectiveness has been shown in vitro and in vivo studies recently on human glioblastoma cell line Uppsala 87 malignant glioma (U-87 MG) forming an in vitro model for the glioblastoma multiforme (GBM) which is the most aggressive and has the highest mortality among the brain tumors. METHODS In the study, the antiproliferative and apoptotic effects of Cl-amidine on GBM cancer model were investigated. The antiproliferative effects of Cl-amidine on U-87 MG cells were determined by 4-[3-(4-iodophenyl)-2-(4-nitrophenyl)-2H-5-tetrazolio]-1,3-benzene disulfonate method at the 24th and 48th hours. The apoptotic effects were analyzed by Annexin V and Propidium iodide staining, caspase-3 activation, and mitochondrial membrane polarization (5,5', 6,6'-tetrachloro-1,1', 3,3' tetraethyl benzimidazolyl carbocyanine iodide) methods in the flow cytometry. RESULTS It has been determined that Cl-amidine exhibits notable antiproliferative properties on U-87 MG cell line in a time and concentration-dependent manner, as determined through the 4-[3-(4-iodophenyl)-2-(4-nitrophenyl)-2H-5-tetrazolio]-1,3-benzene disulfonate assay. Assessment of apoptotic effects via Annexin V and Propidium iodide staining and 5,5', 6,6'-tetrachloro-1,1', 3,3' tetraethyl benzimidazolyl carbocyanine iodide methods has revealed significant efficacy, particularly following a 24-hour exposure period. It has been observed that Cl-amidine induces apoptosis in cells by enhancing mitochondrial depolarization, independently of caspase-3 activation. Furthermore, regarding its impact on healthy cells, it has been demonstrated that Cl-amidine shows lower cytotoxic effects when compared to carmustine, an important therapeutic agent for glioblastoma. CONCLUSION The findings of this study have shown that Cl-amidine exhibits significant potential as an anticancer agent in the treatment of GBM. This conclusion is based on its noteworthy antiproliferative and apoptotic effects observed in U-87 MG cells, as well as its reduced cytotoxicity toward healthy cells in comparison to existing treatments. We propose that the antineoplastic properties of Cl-amidine should be further investigated through a broader spectrum of cancer cell types. Moreover, we believe that investigating the synergistic interactions of Cl-amidine with single or combination therapies holds promise for the discovery of novel anticancer agents.
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Affiliation(s)
- Pinar Naile Öğüten
- Faculty of Medicine, Department of Histology, Samsun University, Samsun, Turkey
| | - Selin Engür Öztürk
- Department of Pharmacy Services, Tavas Vocational School of Health Services, Pamukkale University, Denizli, Turkey
| | - Miriş Dikmen
- Department of Pharmacology, Faculty of Pharmacy, Anadolu University, Eskişehir, Turkey
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Ni C, Pan K, Xu J, Long X, Lin F, Nie Y, Yang Y, Yu J. Effects and mechanism of perinatal nonylphenol exposure on cardiac function and myocardial mitochondria in neonatal rats. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2023; 258:114977. [PMID: 37146387 DOI: 10.1016/j.ecoenv.2023.114977] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/10/2022] [Revised: 04/18/2023] [Accepted: 05/01/2023] [Indexed: 05/07/2023]
Abstract
BACKGROUND Nonylphenol (NP) is a common environmental endocrine disruptor that is associated with the development of cardiovascular disease. However, the toxic effect of NP on mitochondria in the heart of offspring to exposed individuals remains exclusive. OBJECTIVE To investigate whether perinatal NP exposure causes mitochondrial damage in the hearts of offspring of exposed individuals and determine its mechanism of action through both animal and cell experiments. METHODS AND RESULTS For the in vivo experiment, pregnant rats were randomly divided into four groups: the control group (corn oil, C), low dose group (2.5 mg/kg/day, L-NP group), medium dose group (50 mg/kg/day, M-NP group), and high dose group (100 mg/kg/day, H-NP group), with 12 rats in each group. The NP concentration in the hearts of offspring at PND21 and PND90 increased with the increase of the NP dose. Perinatal NP exposure induced a gradual increase in systolic blood pressure in offspring at PND90. In the H-NP group, there was a high degree of inflammatory cell infiltration, myofibril breaks, inconspicuous or absent nuclei, and pink collagen deposition. At PND90, the membrane integrity of mitochondria in the H-NP group was disrupted, the cristae disorder was aggravated, and there was internal lysis with vacuolation. Compared to the control group, the mitochondrial membrane potential of offspring at PND21 and PND90 was decreased in each of the NP exposure groups. NP exposure decreased the activity of mitochondrial respiratory enzyme complex I (CI) and increased the activity of mitochondrial respiratory enzyme complex IV (CIV) in the offspring. At PND21 and PND90, the mRNA and protein expression levels of cardiac mitochondrial PGC-1α, NRF-1, and TFAM decreased with increasing NP dose in a dose-dependent manner. In the in vitro experiment, H9C2 cells were divided into the following four groups: the blank group, RSV group (15 μg/ml), RSV + NP group (15 μg/ml RSV + 120 mmol/L NP), and NP group (120 mmol/L). With increasing NP concentration, the cell survival rate gradually decreased. Compared to the control, the membrane potential was significantly decreased in the NP group; the protein expression levels of SIRT1, PGC-1α, NRF-1, and TFAM in the NP group were significantly lower. CONCLUSION Perinatal NP exposure caused mitochondrial damage and dysfunction in the offspring of exposed individuals in a dose-dependent manner. This toxic effect may be related to NP-induced mitochondrial pathology in the offspring and the inhibition of both gene and protein expression involved in the PGC-1α/NRF-1/TFAM mitochondrial biogenesis signaling pathway following NP exposure.
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Affiliation(s)
- Chengyu Ni
- School of Public Health, Zunyi Medical University, Zunyi, Guizhou 563000, PR China; Department of Medicine, Hubei College of Chinese Medicine, Jingzhou, Hubei 434020, PR China
| | - Kai Pan
- School of Public Health, Zunyi Medical University, Zunyi, Guizhou 563000, PR China
| | - Jie Xu
- School of Public Health, Zunyi Medical University, Zunyi, Guizhou 563000, PR China
| | - Xianping Long
- Department of Cardiology, Affiliated Hospital of Zunyi Medical University, Guizhou, PR China
| | - FangMei Lin
- School of Public Health, Zunyi Medical University, Zunyi, Guizhou 563000, PR China
| | - Yanling Nie
- School of Public Health, Zunyi Medical University, Zunyi, Guizhou 563000, PR China
| | - Yu Yang
- School of Public Health, Zunyi Medical University, Zunyi, Guizhou 563000, PR China
| | - Jie Yu
- School of Public Health, Zunyi Medical University, Zunyi, Guizhou 563000, PR China.
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Melebary SJ, AlGhamdi MS, Elhalwagy MEA, Alsolmy SA, Bin Dohaish AJA. Disturbance in Some Fertility Biomarkers Induced and Changes in Testis Architecture by Chronic Exposure to Various Dosages of Each of Nonylphenol or Bisphenol A and Their Mix. Life (Basel) 2022; 12:life12101555. [PMID: 36294990 PMCID: PMC9605679 DOI: 10.3390/life12101555] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2022] [Revised: 09/13/2022] [Accepted: 10/04/2022] [Indexed: 11/16/2022] Open
Abstract
This investigation was conducted to demonstrate the potential impacts of different doses of Bisphenol A (BPA) or Nonylphenol (NP) and their mixtures on some biological activities in male albino rats. Seventy male albino rats were allocated to the control group (GI) and were given 1 mL of ethanol. G II and G III were given 100 mg/kg of each of BPA and NP, G IV and G V were given 25 mg/kg of each of BPA and NP, G VI was given a high dose of BPA and NP, and G VII was given a low dose of BPA and NP. All animals were treated orally for 60 days. Serum biomarkers of oxidative stress, antioxidants, immune-inflammatory mediators, and apoptotic markers were determined, as well as a histopathological examination of the testis at the end of the experimental period. The results obtained showed a pronounced increase in malondialdehyde (MDA), protein carbonyl (PC), and 4-hydroxynonenol (4-HNE), concomitant with a significant reduction in serum Superoxide dismutase (SOD), catalase enzyme (CAT), and total antioxidant capacity (TAC) in all treated groups. A significant elevation in TNF Alpha, TNF Beta, and Caspase 3 serum was recorded individually and in the groups treated with high doses. The disturbance is represented by histological damage in the testis in the germinal epithelium and a decrease in spermatozoa inside the lumen of seminiferous tubules. The effects on testis tissues were dose-dependent, pronounced in mixture doses, and remarkable in higher doses. In conclusion, exposure to BPA and NP strongly impacts antioxidants, immune-inflammatory mediators, and testis tissue architecture. Furthermore, the data from this investigation support the idea that exposure to BPA and NP in daily life has multiple damages.
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Affiliation(s)
- Sahar J. Melebary
- Department of Biology, College of Science, University of Jeddah, Jeddah 21493, Saudi Arabia
- Correspondence:
| | - Mariam S. AlGhamdi
- Department of Biology, College of Science, University of Jeddah, Jeddah 21493, Saudi Arabia
| | - Manal E. A. Elhalwagy
- Department of Biochemistry, College of Science, University of Jeddah, Jeddah 21493, Saudi Arabia
| | - Soha A. Alsolmy
- Department of Biology, College of Science, University of Jeddah, Jeddah 21493, Saudi Arabia
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Sun L, Li Z, Shang H, Xin X. Hypericin Enhances Paclitaxel-Induced B16-F10 Cell Apoptosis by Activating a Cytochrome c Release-Dependent Pathway. Front Pharmacol 2021; 12:652452. [PMID: 34421585 PMCID: PMC8371448 DOI: 10.3389/fphar.2021.652452] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2021] [Accepted: 06/30/2021] [Indexed: 11/30/2022] Open
Abstract
The enhanced inhibitory effect of paclitaxel (PTX) combined with hypericin (HY) on B16-F10 cells may be realized through the ROS-related cytochrome c release pathway. The apoptotic characteristics of the B16-F10 cells, such as DNA fragmentation, chromatin condensation, and apoptotic body formation, were all enhanced in the combined treatment group. Further investigation showed that the combination of paclitaxel and HY could increase the level of mitochondrial damage and the concentration of cytochrome c, causing the expression of caspase-3 and the cleavage of PARP.1. Compared with paclitaxel or HY alone, the level of reactive oxygen species (ROS) increased significantly, while glutathione reductase (GR) activity and intracellular glutathione (GSH) levels decreased significantly in the combination group.
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Affiliation(s)
- Liyun Sun
- East China University of Science and Technology, Shanghai, China
| | - Zixuan Li
- East China University of Science and Technology, Shanghai, China
| | - Huoli Shang
- East China University of Science and Technology, Shanghai, China
| | - Xiujuan Xin
- East China University of Science and Technology, Shanghai, China
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Motamed HR, Shariati M, Ahmadi R, Khatamsaz S, Mokhtari M. The apoptotic effects of progesterone on breast cancer (MCF-7) and human osteosarcoma (MG-636) cells. Physiol Int 2020; 107:406-418. [PMID: 33074834 DOI: 10.1556/2060.2020.00034] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2020] [Accepted: 06/13/2020] [Indexed: 11/19/2022]
Abstract
Purpose Progesterone has been reported to inhibit the proliferation of breast cancer and osteosarcoma cells; however, its inhibitory mechanism has not yet been clarified. The aim of the present study was to clarify the effects of progesterone on apoptosis in breast cancer (MCF-7) and human osteosarcoma (MG-63) cells. Materials and methods In this experimental study the cytotoxic effect of progesterone was measured in MCF-7 and MG-63 cells exposed to different concentrations of progesterone using MTT assay, and effective concentrations were identified. The expression levels of the Bax, P53 and Bcl-2 genes were evaluated by real-time PCR, and caspase-3, 8 and 9 activity levels were determined using a colorimetric method. Hoechst staining and flow cytometry were used to confirm apoptosis. The data were statistically analyzed using one-way analysis of variance (ANOVA) and independent-samples t-test. Results Compared to the control group, we observed a significant increase in the expression levels of the Bax and P53 genes and the activity levels of caspase-3 and 9, and a significant decrease in the expression level of the Bcl-2 gene in MCF-7 and MG-63 treated with effective concentration of progesterone. The caspase-8 activity level did not change significantly in treated MG-63 but increased in treated MCF-7 cells. Hoechst staining and flow cytometry results confirmed apoptosis in the cells exposed to effective concentration of progesterone. Conclusions The cytotoxic effect of progesterone on breast cancer and osteosarcoma cells was mediated by apoptotic pathways. In this context, progesterone triggers the extrinsic and intrinsic apoptotic pathways in MCF-7 cells and induces the intrinsic apoptotic pathway in MG-63 cells.
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Affiliation(s)
- H R Motamed
- 1Department of Biology, Kazerun Branch, Islamic Azad University, Kazerun, Islamic Republic of Iran
| | - M Shariati
- 1Department of Biology, Kazerun Branch, Islamic Azad University, Kazerun, Islamic Republic of Iran
| | - R Ahmadi
- 2Department of Biology, Hamedan Branch, Islamic Azad University, Hamedan, Islamic Republic of Iran.,3Avicenna International College, Budapest, Hungary
| | - S Khatamsaz
- 1Department of Biology, Kazerun Branch, Islamic Azad University, Kazerun, Islamic Republic of Iran
| | - M Mokhtari
- 1Department of Biology, Kazerun Branch, Islamic Azad University, Kazerun, Islamic Republic of Iran
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6
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Hussein AM, Sina M. p-Nonylphenol Impairment of Osteogenic Differentiation of Mesenchymal Stem Cells was Found to be Due to Oxidative Stress and Down-Regulation of RUNX2 and BMP. Endocr Metab Immune Disord Drug Targets 2020; 20:1336-1346. [PMID: 32368982 DOI: 10.2174/1871530320666200505114058] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/04/2019] [Revised: 03/02/2020] [Accepted: 03/09/2020] [Indexed: 11/22/2022]
Abstract
OBJECTIVES Previously, it was found that the para-nonylphenol (p-NP) impairs the osteogenic differentiation of rat bone marrow mesenchymal stem cells (rBMSCs); thus the aim of the present study was to evaluate the mechanism of the impairment. METHODS rBMSCs after 3rd passage cultured in osteogenic media in the presence of 0, 0.5 and 2.5 μM p-NP for 5, 10, 15 and 20 days. The study investigated the viability of the cells using MTT assays. The mineralization was studied using Alizarin red quantification analysis. Using a flame-photometer, the electrolytes (sodium and potassium) were measured, and the level of calcium as well as ALT, AST, ALP and LDH was determined by commercial kits. The level of total-antioxidant, MDA and the activity of SOD and CAT were estimated with the help of a spectrophotometer. Gene expression was studied using rt-PCR. RESULTS The p-NP treatment of osteogenic differentiated MSCs showed intracellular electrolyte imbalance and variation of cellular metabolism. In addition, we observed oxidative stress due to the reduction of total antioxidant capacity and the imbalance of antioxidant enzymes activity. Investigating the genes involved in the osteogenic differentiation of MSCs to osteoblast showed that the 2.5 μM of p-NP reduced the expression of the ALP, SMAD, BMP and RUNX2 genes. CONCLUSION The study concludes that this pollutant via influencing the genomics and metabolic imbalance, as well as oxidative induction, caused a reduction of mineralization and differentiation of MSCs. This environmental pollutant might cause osteoporosis, which necessitates raising public awareness, especially to those who live in the industrial area to prevent its drastic effect.
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Affiliation(s)
- Abnosi M Hussein
- Department of Biology, Faculty of Sciences, Arak University, Arak, Iran
| | - Masoomi Sina
- Department of Biology, Faculty of Sciences, Arak University, Arak, Iran
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7
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Noorimotlagh Z, Mirzaee SA, Martinez SS, Rachoń D, Hoseinzadeh M, Jaafarzadeh N. Environmental exposure to nonylphenol and cancer progression Risk-A systematic review. ENVIRONMENTAL RESEARCH 2020; 184:109263. [PMID: 32113025 DOI: 10.1016/j.envres.2020.109263] [Citation(s) in RCA: 43] [Impact Index Per Article: 10.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/30/2019] [Revised: 02/14/2020] [Accepted: 02/14/2020] [Indexed: 05/26/2023]
Abstract
Environmental exposure to nonylphenol (NP) can adversely affect human and wildlife health. A systematic review was conducted to evaluate the relationship between environmental NP exposure and cancer progression risk. Literature surveys were conducted within several international databases using appropriate keywords. A comprehensive search yielded 58 eligible studies involving a wide range of adverse effects, exposure assessment methods, study designs, and experimental models. Most studies reported that NP strongly induced breast cancer progression in intended experiments. Positive associations between NP exposure and ovarian, uterine, pituitary, and testicular cancers were also reported. Although some studies reported no relation between environmental NP exposure and tumour and/or cancer progression, NP (a known endocrine disrupting chemical) induced action mechanisms in multiple experimental models and may interfere with/hyper-activate oestrogen signalling. Secretion of oestrogen and development of reproductive tissues like breasts, uteruses, and ovaries showed strong associations with possible neoplasia (i.e., uncontrolled development of tumours and/or malignant cancers). Findings of this study are important for informing policymakers to pass legislation limiting the use of environmental contaminants such as NP before all adverse effects of exposure have been determined.
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Affiliation(s)
- Zahra Noorimotlagh
- Biotechnology and Medical Plants Research Center, Ilam University of Medical Sciences, Ilam, Iran; Department of Environmental Health Engineering, School of Public Health, Ilam University of Medical Sciences, Ilam, Iran.
| | - Seyyed Abbas Mirzaee
- Biotechnology and Medical Plants Research Center, Ilam University of Medical Sciences, Ilam, Iran; Department of Environmental Health Engineering, School of Public Health, Ilam University of Medical Sciences, Ilam, Iran.
| | - Susana Silva Martinez
- Centro de Investigación en Ingeniería y Ciencias Aplicadas, Universidad Autónoma del Estado de Morelos, Av. Universidad 1001, Col. Chamilpa, Cuernavaca, Morelos, 62210, Mexico.
| | - Dominik Rachoń
- Department of Clinical and Experimental Endocrinology, Medical University of Gdańsk, Dębinki 7, 80-211, Gdańsk, Poland.
| | - Mehran Hoseinzadeh
- Hematology, Oncology and Stem Cell Transplantation Research Center, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran.
| | - Neemat Jaafarzadeh
- Nanotechnology Research Center, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran.
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Li YL, Gan XL, Zhu RP, Wang X, Liao DF, Jin J, Huang Z. Anticancer Activity of Platinum (II) Complex with 2-Benzoylpyridine by Induction of DNA Damage, S-Phase Arrest, and Apoptosis. Anticancer Agents Med Chem 2019; 20:504-517. [PMID: 31721706 DOI: 10.2174/1871520619666191112114340] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2019] [Revised: 10/03/2019] [Accepted: 10/15/2019] [Indexed: 11/22/2022]
Abstract
OBJECTIVE To overcome the disadvantages of cisplatin, numerous platinum (Pt) complexes have been prepared. However, the anticancer activity and mechanism of Pt(II) complexed with 2-benzoylpyridine [Pt(II)- Bpy]: [PtCl2(DMSO)L] (DMSO = dimethyl sulfoxide, L = 2-benzoylpyridine) in cancer cells remain unknown. METHODS Pt(II)-Bpy was synthesized and characterized by spectrum analysis. Its anticancer activity and underlying mechanisms were demonstrated at the cellular, molecular, and in vivo levels. RESULTS Pt(II)-Bpy inhibited tumor cell growth, especially HepG2 human liver cancer cells, with a halfmaximal inhibitory concentration of 9.8±0.5μM, but with low toxicity in HL-7702 normal liver cells. Pt(II)- Bpy induced DNA damage, which was demonstrated through a marked increase in the expression of cleavedpoly (ADP ribose) polymerase (PARP) and gamma-H2A histone family member X and a decrease in PARP expression. The interaction of Pt(II)-Bpy with DNA at the molecular level was most likely through an intercalation mechanism, which might be evidence of DNA damage. Pt(II)-Bpy initiated cell cycle arrest at the S phase in HepG2 cells. It also caused severe loss of the mitochondrial membrane potential; a decrease in the expression of caspase-9 and caspase-3; an increase in reactive oxygen species levels; the release of cytochrome c and apoptotic protease activation factor; and the activation of caspase-9 and caspase-3 in HepG2 cells, which in turn resulted in apoptosis. Meanwhile, changes in p53 and related proteins were observed including the upregulation of p53, the phosphorylation of p53, p21, B-cell lymphoma-2-associated X protein, and NOXA; and the downregulation of B-cell lymphoma 2. Moreover, Pt(II)-Bpy displayed marked inhibitory effects on tumor growth in the HepG2 nude mouse model. CONCLUSION Pt(II)-Bpy is a potential candidate for cancer chemotherapy.
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Affiliation(s)
- Yu-Lan Li
- Laboratory of Hepatobiliary and Pancreatic Surgery, the Affiliated Hospital of Guilin Medical University, Guilin 541001, Guangxi, China.,Guangxi Key Laboratory of Molecular Medicine in Liver Injury and Repair, Guilin Medical University, Guilin 541001, Guangxi, China.,China-USA Lipids in Health and Disease Research Center, Guilin Medical University, Guilin 541001, Guangxi, China.,Key Laboratory for Chemistry and Molecular Engineering of Medicinal Resources, School of Chemistry and Pharmacy, Guangxi Normal University, 15 Yucai Road, Guilin 541004, China
| | - Xin-Li Gan
- Laboratory of Hepatobiliary and Pancreatic Surgery, the Affiliated Hospital of Guilin Medical University, Guilin 541001, Guangxi, China
| | - Rong-Ping Zhu
- Laboratory of Hepatobiliary and Pancreatic Surgery, the Affiliated Hospital of Guilin Medical University, Guilin 541001, Guangxi, China.,Department of Emergency Traumatic Surgery, the Affiliated Ganzhou Hospital of Nanchang University (Ganzhou People's Hospital), Ganzhou 341000, Jiangxi, China
| | - Xuehong Wang
- Department of Pathology, the Affiliated Hospital of Guilin Medical University, Guilin 541001, Guangxi, China
| | - Duan-Fang Liao
- Division of Stem Cell Regulation and Application, State Key Laboratory of Chinese Medicine Powder and Medicine Innovation in Hunan (Incubation), Hunan University of Chinese Medicine, Changsha, Hunan, China
| | - Junfei Jin
- Laboratory of Hepatobiliary and Pancreatic Surgery, the Affiliated Hospital of Guilin Medical University, Guilin 541001, Guangxi, China.,Guangxi Key Laboratory of Molecular Medicine in Liver Injury and Repair, Guilin Medical University, Guilin 541001, Guangxi, China.,China-USA Lipids in Health and Disease Research Center, Guilin Medical University, Guilin 541001, Guangxi, China
| | - Zhaoquan Huang
- Department of Pathology, the Affiliated Hospital of Guilin Medical University, Guilin 541001, Guangxi, China
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Chen XX, Tang L, Han ZH, Wang WJ, Meng JG. Coculture with bone marrow‑derived mesenchymal stem cells attenuates inflammation and apoptosis in lipopolysaccharide‑stimulated alveolar epithelial cells via enhanced secretion of keratinocyte growth factor and angiopoietin‑1 modulating the Toll‑like receptor‑4 signal pathway. Mol Med Rep 2019; 19:1891-1902. [PMID: 30628710 DOI: 10.3892/mmr.2019.9836] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2018] [Accepted: 12/11/2018] [Indexed: 11/06/2022] Open
Abstract
Acute lung injury (ALI) is a common, costly and potentially lethal disease with characteristics of alveolar‑capillary membrane disruption, pulmonary edema and impaired gas exchange due to increased apoptosis and pulmonary inflammation. There is no effective and specific therapy for ALI; however, mesenchymal stem cells (MSCs) have been demonstrated to be a potential option. Lipopolysaccharide (LPS) is a highly proinflammatory molecule that is used to mimic an in vivo inflammatory and damaged state in vitro. The present study investigated the effect of bone marrow‑derived MSCs on an LPS‑induced alveolar epithelial cell (A549 cell line) injury and its underlying mechanisms by a Transwell system. It was identified that a high LPS concentration caused a decrease in cell viability, increases in apoptosis, inflammatory cytokine release and NF‑κB activity, disruption of the caspase‑3/Bcl‑2 ratio, upregulation of Toll‑like receptor 4 (TLR4), myeloid differentiation factor 88 (MyD88) and toll‑interleukin‑1 receptor domain‑containing adaptor inducing interferon (TRIF) expression, and facilitation of TLR4/MyD88 and TLR4/TRIF complex formation in A549 cells. Coculture with MSCs attenuated all of these activities induced by LPS in A549 cells. In addition, an increased level of keratinocyte growth factor (KGF) and angiopoietin‑1 (ANGPT1) secretion from MSCs was observed under inflammatory stimulation. KGF and/or ANGPT1 neutralizing antibodies diminished the beneficial effect of MSC conditioned medium. These data suggest that MSCs alleviate inflammatory damage and cellular apoptosis induced by LPS in A549 cells by modulating TLR4 signals. These changes may be partly associated with an increased secretion of KGF and ANGPT1 from MSCs under inflammatory conditions. These data provide the basis for development of MSC‑based therapies for ALI.
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Affiliation(s)
- Xu-Xin Chen
- Department of Respiratory Medicine, Navy General Hospital of The People's Liberation Army, Beijing 100037, P.R. China
| | - Lu Tang
- Department of Neurology, The First Hospital of Changsha, Changsha, Hunan 430100, P.R. China
| | - Zhi-Hai Han
- Department of Respiratory Medicine, Navy General Hospital of The People's Liberation Army, Beijing 100037, P.R. China
| | - Wen-Jing Wang
- Cardiothoracic Surgery Intensive Care Unit, Anqing Municipal Hospital, Anqing, Anhui 246003, P.R. China
| | - Ji-Guang Meng
- Department of Respiratory Medicine, Navy General Hospital of The People's Liberation Army, Beijing 100037, P.R. China
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Zou BQ, Wang SL, Qin QP, Bai YX, Tan MX. Synthesis, Characterization, and Cytotoxicity of the Cobalt (III) Complex with N,N-Diethyl-4-(2,2':6',2''-terpyridin-4'-yl)aniline. Chem Biodivers 2018; 15:e1800215. [PMID: 30027551 DOI: 10.1002/cbdv.201800215] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2018] [Accepted: 07/18/2018] [Indexed: 12/29/2022]
Abstract
A cobalt(III) complex, [Co(L)2 ](ClO4 )3 (1), in which the ligand L was N,N-diethyl-4-(2,2':6',2''-terpyridin-4'-yl)aniline (L), was synthesized and fully characterized. This new cobalt(III) complex 1 exhibited selective cytotoxicity against HeLa, T-24, A549, MGC80-3, HepG2, and SK-OV-3 cells with IC50 values in the micromolar range (0.52 - 4.33 μm), and it exhibited low cytotoxicity against normal HL-7702 cells. The complex 1 was the most potent against the T-24 cells. It was found that 1 could cause the cell cycle arrest in G1 phase, and it exerted its antitumor activity mainly via disruption of mitochondrial function.
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Affiliation(s)
- Bi-Qun Zou
- Guangxi Key Laboratory of Agricultural Resources Chemistry and Biotechnology, College of Chemistry and Food Science, Yulin Normal University, 1303 Jiaoyudong Road, Yulin, 537000, P. R. China.,Department of Chemistry, Guilin Normal College, 21 Xinyi Road, Guilin, 541001, P. R. China
| | - Shu-Long Wang
- Guangxi Key Laboratory of Agricultural Resources Chemistry and Biotechnology, College of Chemistry and Food Science, Yulin Normal University, 1303 Jiaoyudong Road, Yulin, 537000, P. R. China
| | - Qi-Pin Qin
- Guangxi Key Laboratory of Agricultural Resources Chemistry and Biotechnology, College of Chemistry and Food Science, Yulin Normal University, 1303 Jiaoyudong Road, Yulin, 537000, P. R. China.,State Key Laboratory for the Chemistry and Molecular Engineering of Medicinal Resources, School of Chemistry and Pharmacy, Guangxi Normal University, 15 Yucai Road, Guilin, 541004, P. R. China
| | - Yu-Xia Bai
- State Key Laboratory for the Chemistry and Molecular Engineering of Medicinal Resources, School of Chemistry and Pharmacy, Guangxi Normal University, 15 Yucai Road, Guilin, 541004, P. R. China
| | - Ming-Xiong Tan
- Guangxi Key Laboratory of Agricultural Resources Chemistry and Biotechnology, College of Chemistry and Food Science, Yulin Normal University, 1303 Jiaoyudong Road, Yulin, 537000, P. R. China.,State Key Laboratory for the Chemistry and Molecular Engineering of Medicinal Resources, School of Chemistry and Pharmacy, Guangxi Normal University, 15 Yucai Road, Guilin, 541004, P. R. China
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Noorimotlagh Z, Mirzaee SA, Ahmadi M, Jaafarzadeh N, Rahim F. The possible DNA damage induced by environmental organic compounds: The case of Nonylphenol. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2018; 158:171-181. [PMID: 29684747 DOI: 10.1016/j.ecoenv.2018.04.023] [Citation(s) in RCA: 26] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/03/2017] [Revised: 04/08/2018] [Accepted: 04/10/2018] [Indexed: 06/08/2023]
Abstract
Human impact on the environment leads to the release of many pollutants that produce artificial compounds, which can have harmful effects on the body's endocrine system; these are known as endocrine disruptors (EDs). Nonylphenol (NP) is a chemical compound with a nonyl group that is attached to a phenol ring. NP-induced H2AX is a sensitive genotoxic biomarker for detecting possible DNA damage; it also causes male infertility and carcinogenesis. We attempt to comprehensively review all the available evidence about the different ways with descriptive mechanisms for explaining the possible DNA damage that is induced by NP. We systematically searched several databases, including PubMed, Scopus, Web of Science, and gray literature, such as Google Scholar by using medical subheading (MeSH) terms and various combinations of selected keywords from January 1970 to August 2017. The initial search identified 62,737 potentially eligible studies; of these studies, 33 were included according to the established inclusion criteria. Thirty-three selected studies, include the topics of animal model (n = 21), cell line (n = 6), human model (n = 4), microorganisms (n = 1), solid DNA (n = 1), infertility (n = 4), apoptosis (n = 6), and carcinogenesis (n = 3). This review highlighted the possible deleterious effects of NP on DNA damage through the ability to produce ROS/RNS. Finally, it is significant to observe caution at this stage with the continued use of environmental pollutants such as NP, which may induce DNA damage and apoptosis.
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Affiliation(s)
- Zahra Noorimotlagh
- Student Research Committee, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran; Environmental Technologies Research Center, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran.
| | - Seyyed Abbas Mirzaee
- Department of Environmental Health Engineering, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran.
| | - Mehdi Ahmadi
- Environmental Technologies Research Center, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran; Department of Environmental Health Engineering, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran.
| | - Neemat Jaafarzadeh
- Environmental Technologies Research Center, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran; Department of Environmental Health Engineering, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran.
| | - Fakher Rahim
- Health Research Institute, Thalassemia and Hemoglobinopathies Research Centre, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran.
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12
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Cheng Y, Luo R, Zheng H, Wang B, Liu Y, Liu D, Chen J, Xu W, Li A, Zhu Y. Synergistic anti-tumor efficacy of sorafenib and fluvastatin in hepatocellular carcinoma. Oncotarget 2017; 8:23265-23276. [PMID: 28423574 PMCID: PMC5410302 DOI: 10.18632/oncotarget.15575] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2016] [Accepted: 02/13/2017] [Indexed: 12/17/2022] Open
Abstract
Drug resistance to sorafenib is common in patients with hepatocellular carcinoma(HCC). We examined the effects of a combination of sorafenib and fluvastatin on HCC using in vitro and in vivo models. The dual treatment induced apoptosis and reduced cellular viability in HCC more effectively than either drug alone. The combination treatment also inhibited activation of hepatic stellate cells, whereas single drug treatments did not. On a molecular level, combined treatment inhibited activation of the MAPK and NF-κB pathways via Toll-like receptor 4 in HCC cells. Combined treatment also inhibited expression of stromal cell-derived factor 1α in HCC cells, which further inhibited the MAPK pathway in hepatic stellate cells. These results suggest that a combination of sorafenib and fluvastatin may be a promising therapeutic strategy for patients with advanced HCC.
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Affiliation(s)
- Yang Cheng
- Digestive Department, Guangzhou Women and Children's Medical Center, Guangzhou Medical University, Guangzhou, Guangdong 510623, China.,Guangzhou Institute of Pediatrics, Guangzhou Women and Children's Medical Center, Guangzhou Medical University, Guangzhou, Guangdong 510623, China
| | - RongCheng Luo
- Cancer Center, Traditional Chinese Medicine-Integrated Hospital, Southern Medical University, Guangzhou, Guangdong 510315, China
| | - Hang Zheng
- Department of Oncology, Nanfang Hospital, Southern Medical University, Guangzhou, Guangdong 510515, China
| | - Biao Wang
- Department of Hepatobiliary Surgery, Nanfang Hospital, Southern Medical University, Guangzhou, Guangdong 510515, China
| | - YaHui Liu
- Cancer Center, Traditional Chinese Medicine-Integrated Hospital, Southern Medical University, Guangzhou, Guangdong 510315, China
| | - DingLi Liu
- Liver Tumor Center, Nanfang Hospital, Southern Medical University, Guangzhou, Guangdong 510515, China
| | - JinZhang Chen
- Liver Tumor Center, Nanfang Hospital, Southern Medical University, Guangzhou, Guangdong 510515, China
| | - WanFu Xu
- Digestive Department, Guangzhou Women and Children's Medical Center, Guangzhou Medical University, Guangzhou, Guangdong 510623, China.,Guangzhou Institute of Pediatrics, Guangzhou Women and Children's Medical Center, Guangzhou Medical University, Guangzhou, Guangdong 510623, China
| | - AiMin Li
- Cancer Center, Traditional Chinese Medicine-Integrated Hospital, Southern Medical University, Guangzhou, Guangdong 510315, China
| | - Yun Zhu
- Liver Tumor Center, Nanfang Hospital, Southern Medical University, Guangzhou, Guangdong 510515, China
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13
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Bernabò I, Guardia A, Macirella R, Tripepi S, Brunelli E. Chronic exposures to fungicide pyrimethanil: multi-organ effects on Italian tree frog (Hyla intermedia). Sci Rep 2017; 7:6869. [PMID: 28761072 PMCID: PMC5537256 DOI: 10.1038/s41598-017-07367-6] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2017] [Accepted: 06/28/2017] [Indexed: 12/15/2022] Open
Abstract
Amphibian habitats are easily contaminated by several pollutants, and in agricultural landscapes the likely exposure scenario is represented by pesticides. Many of these substances are known or suspected to act as endocrine disrupting chemicals (EDCs). The goal of the present study was to assess the effects of pyrimethanil, a common-used but also overlooked fungicide, on liver, kidney and gonadal differentiation of Hyla intermedia. Through a multi-organ evaluation, we demonstrated that a long term exposure to two environmentally relevant concentrations of pyrimethanil (5 and 50 µg/L) elicits a range of toxic responses. First we showed that pyrimethanil induces underdevelopment of ovaries and interferes with normal sexual differentiation, thus revealing the endocrine disruption potential of this fungicide. Moreover we revealed that all considered organs are seriously affected by this fungicide and both necrosis and apoptosis contribute to the histological response. This is the first report on the effects of pyrimethanil on gonads, liver and kidney histology of a non-model species and it demonstrates that the hazardous properties of this fungicide can result from several pathological processes affecting different key compartments of amphibian.
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Affiliation(s)
- Ilaria Bernabò
- Department of Biology, Ecology and Earth Science, University of Calabria, Via P. Bucci 4/B, 87036, Rende, Cosenza, Italy
| | - Antonello Guardia
- Department of Biology, Ecology and Earth Science, University of Calabria, Via P. Bucci 4/B, 87036, Rende, Cosenza, Italy
| | - Rachele Macirella
- Department of Biology, Ecology and Earth Science, University of Calabria, Via P. Bucci 4/B, 87036, Rende, Cosenza, Italy
| | - Sandro Tripepi
- Department of Biology, Ecology and Earth Science, University of Calabria, Via P. Bucci 4/B, 87036, Rende, Cosenza, Italy
| | - Elvira Brunelli
- Department of Biology, Ecology and Earth Science, University of Calabria, Via P. Bucci 4/B, 87036, Rende, Cosenza, Italy.
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14
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Abou Khalil N, Abd-Elkareem M, Sayed A. Nigella sativa
seed protects against 4-nonylphenol-induced haematotoxicity in Clarias gariepinus
(Burchell, 1822): Oxidant/antioxidant rebalance. AQUACULTURE NUTRITION 2017. [DOI: 10.1111/anu.12522] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Affiliation(s)
- N.S. Abou Khalil
- Faculty of Medicine; Medical Physiology Department; Assiut University; Assiut Egypt
| | - M. Abd-Elkareem
- Faculty of Veterinary Medicine; Anatomy, Histology and Embryology Department; Assiut University; Assiut Egypt
| | - A.H. Sayed
- Faculty of Science; Zoology Department; Assiut University; Assiut Egypt
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15
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Qin QP, Meng T, Wei ZZ, Zhang CH, Liu YC, Liang H, Chen ZF. Synthesis, Crystal Structure, Cytotoxicity, and Mechanism of Action of ZnII, MnII, and FeIIIComplexes with 6-Hydroxyloxoisoaporphine. Eur J Inorg Chem 2017. [DOI: 10.1002/ejic.201601030] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Affiliation(s)
- Qi-Pin Qin
- State Key Laboratory for Chemistry and Molecular Engineering of Medicinal Resources; School of Chemistry and Pharmacy; Guangxi Normal University; No. 15 Yucai Road 541004 Guilin, Guangxi China
| | - Ting Meng
- State Key Laboratory for Chemistry and Molecular Engineering of Medicinal Resources; School of Chemistry and Pharmacy; Guangxi Normal University; No. 15 Yucai Road 541004 Guilin, Guangxi China
| | - Zu-Zhuang Wei
- State Key Laboratory for Chemistry and Molecular Engineering of Medicinal Resources; School of Chemistry and Pharmacy; Guangxi Normal University; No. 15 Yucai Road 541004 Guilin, Guangxi China
| | - Chuan-Hui Zhang
- State Key Laboratory for Chemistry and Molecular Engineering of Medicinal Resources; School of Chemistry and Pharmacy; Guangxi Normal University; No. 15 Yucai Road 541004 Guilin, Guangxi China
| | - Yan-Cheng Liu
- State Key Laboratory for Chemistry and Molecular Engineering of Medicinal Resources; School of Chemistry and Pharmacy; Guangxi Normal University; No. 15 Yucai Road 541004 Guilin, Guangxi China
| | - Hong Liang
- State Key Laboratory for Chemistry and Molecular Engineering of Medicinal Resources; School of Chemistry and Pharmacy; Guangxi Normal University; No. 15 Yucai Road 541004 Guilin, Guangxi China
| | - Zhen-Feng Chen
- State Key Laboratory for Chemistry and Molecular Engineering of Medicinal Resources; School of Chemistry and Pharmacy; Guangxi Normal University; No. 15 Yucai Road 541004 Guilin, Guangxi China
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16
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Zhang YL, Qin QP, Cao QQ, Han HH, Liu ZL, Liu YC, Liang H, Chen ZF. Synthesis, crystal structure, cytotoxicity and action mechanism of a Rh(iii) complex with 8-hydroxy-2-methylquinoline as a ligand. MEDCHEMCOMM 2017; 8:184-190. [PMID: 30108704 PMCID: PMC6072358 DOI: 10.1039/c6md00462h] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/13/2016] [Accepted: 10/15/2016] [Indexed: 11/21/2022]
Abstract
A rhodium(iii) complex, [Rh(MQ)(DMSO)2Cl2] (1), with 8-hydroxy-2-methylquinoline as the ligand was synthesized and characterized. Complex 1 exhibited cytotoxicity against BEL-7404, Hep-G2, NCI-H460, T-24, and A549 cell lines with IC50 values in the micromolar range (6.52-17.86 μM). Various experiments on the Hep-G2 cells showed that complex 1 caused cell cycle arrest at the S phase, downregulation of cdc25 A, cyclin A, cyclin B and CDK2, and upregulation of p21, p27 and p53. Furthermore, cytotoxicity mechanism studies suggested that complex 1-induced apoptosis was achieved via disruption of the mitochondrial function, which led to a significant loss of the mitochondrial membrane potential, an increase in the cellular levels of reactive oxygen species, cytochrome c, and apaf-1, and a fluctuation of the intracellular Ca2+ concentration. Taken altogether, complex 1 can trigger cancer cell death by inducing apoptosis through a mitochondrial dysfunction pathway.
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Affiliation(s)
- Yun-Liang Zhang
- State Key Laboratory for the Chemistry and Molecular Engineering of Medicinal Resources , School of Chemistry & Pharmaceutical Sciences , Guangxi Normal University , Guilin , Guangxi 541004 , PR China . ; ; Tel: +86 773 2120958
- Department of Pharmacy , Shaoyang University , Shaoyang , Hunan 422000 , People's Republic of China
| | - Qi-Pin Qin
- State Key Laboratory for the Chemistry and Molecular Engineering of Medicinal Resources , School of Chemistry & Pharmaceutical Sciences , Guangxi Normal University , Guilin , Guangxi 541004 , PR China . ; ; Tel: +86 773 2120958
| | - Qian-Qian Cao
- State Key Laboratory for the Chemistry and Molecular Engineering of Medicinal Resources , School of Chemistry & Pharmaceutical Sciences , Guangxi Normal University , Guilin , Guangxi 541004 , PR China . ; ; Tel: +86 773 2120958
| | - Hong-Hua Han
- State Key Laboratory for the Chemistry and Molecular Engineering of Medicinal Resources , School of Chemistry & Pharmaceutical Sciences , Guangxi Normal University , Guilin , Guangxi 541004 , PR China . ; ; Tel: +86 773 2120958
| | - Zhu-Ling Liu
- State Key Laboratory for the Chemistry and Molecular Engineering of Medicinal Resources , School of Chemistry & Pharmaceutical Sciences , Guangxi Normal University , Guilin , Guangxi 541004 , PR China . ; ; Tel: +86 773 2120958
| | - Yan-Cheng Liu
- State Key Laboratory for the Chemistry and Molecular Engineering of Medicinal Resources , School of Chemistry & Pharmaceutical Sciences , Guangxi Normal University , Guilin , Guangxi 541004 , PR China . ; ; Tel: +86 773 2120958
| | - Hong Liang
- State Key Laboratory for the Chemistry and Molecular Engineering of Medicinal Resources , School of Chemistry & Pharmaceutical Sciences , Guangxi Normal University , Guilin , Guangxi 541004 , PR China . ; ; Tel: +86 773 2120958
| | - Zhen-Feng Chen
- State Key Laboratory for the Chemistry and Molecular Engineering of Medicinal Resources , School of Chemistry & Pharmaceutical Sciences , Guangxi Normal University , Guilin , Guangxi 541004 , PR China . ; ; Tel: +86 773 2120958
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17
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Cai J, Peng Y, Chen T, Liao H, Zhang L, Chen Q, He Y, Wu P, Xie T, Pan Q. Chloral Hydrate Treatment Induced Apoptosis of Macrophages via Fas Signaling Pathway. Med Sci Monit 2016; 22:4836-4843. [PMID: 27941708 PMCID: PMC5167102 DOI: 10.12659/msm.901772] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022] Open
Abstract
BACKGROUND There are recent reports on several anesthetics that have anti-inflammatory and anti-infective effects apart from their uses for pain relief and muscle relaxation. Chloral hydrate is a clinical anesthetic drug and sedative that has also been reported to attenuate inflammatory response, but the mechanisms are not clearly understood. MATERIAL AND METHODS This study investigated the effect of chloral hydrate treatment on the apoptosis of macrophages and explored the underlying mechanisms. RAW264.7 macrophages were treated with various concentrations of chloral hydrate for various lengths of time. Morphological changes were observed under a light microscope and apoptosis was detected with annexin-V-FITC/PI double-staining assay, Hochest 33258 and DNA ladder assay, the expression of Fas/FasL was detected with a flow cytometer, and the Fas signaling pathway was assessed by Western blotting. RESULTS The results showed that chloral hydrate treatment induced the morphology of RAW264.7 macrophages to change shape from typical fusiform to round in a concentration- and time-dependent manner, and was finally suspended in the supernatant. For the induction of apoptosis, chloral hydrate treatment induced the apoptosis of RAW264.7 macrophages from early-to-late stage apoptosis in a concentration- and time-dependent manner. For the mechanism, chloral hydrate treatment induced higher expression of Fas on RAW264.7 macrophages, and was also associated with changes in the expression of proteins involved in Fas signaling pathways. CONCLUSIONS Chloral hydrate treatment can induce the apoptosis of RAW264.7 macrophages through the Fas signaling pathway, which may provide new options for adjunctive treatment of acute inflammation.
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Affiliation(s)
- Jun Cai
- Institute of Nephrology, Affiliated Hospital of Guangdong Medical University, Zhanjiang, Guangdong, China (mainland)
| | - Yanxia Peng
- Institute of Nephrology, Affiliated Hospital of Guangdong Medical University, Zhanjiang, Guangdong, China (mainland)
| | - Ting Chen
- Institute of Nephrology, Affiliated Hospital of Guangdong Medical University, Zhanjiang, Guangdong, China (mainland)
| | - Huanjin Liao
- Clinical Research Center, Affiliated Hospital of Guangdong Medical University, Zhanjiang, Guangdong, China (mainland)
| | - Lifang Zhang
- Clinical Research Center, Affiliated Hospital of Guangdong Medical University, Zhanjiang, Guangdong, China (mainland)
| | - Qiuhua Chen
- Department of Immunology and Rheumatology, Affiliated Hospital of Guangdong Medical University, Zhanjiang, Guangdong, China (mainland)
| | - Yiming He
- Department of Immunology and Rheumatology, Affiliated Hospital of Guangdong Medical University, Zhanjiang, Guangdong, China (mainland)
| | - Ping Wu
- Clinical Research Center, Affiliated Hospital of Guangdong Medical University, Zhanjiang, Guangdong, China (mainland)
| | - Tong Xie
- Department of Immunology and Rheumatology, Affiliated Hospital of Guangdong Medical University, Zhanjiang, Guangdong, China (mainland)
| | - Qingjun Pan
- Institute of Nephrology, Affiliated Hospital of Guangdong Medical University, Zhanjiang, Guangdong, China (mainland)
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18
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Jiang BP, Tan X, Shen XC, Lei WQ, Liang WQ, Ji SC, Liang H. One-Step Fabrication of a Multifunctional Aggregation-Induced Emission Nanoaggregate for Targeted Cell Imaging and Enzyme-Triggered Cancer Chemotherapy. ACS Macro Lett 2016; 5:450-454. [PMID: 35607226 DOI: 10.1021/acsmacrolett.6b00154] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
A novel multifunctional aggregation-induced emission (AIE) nanoaggregate for targeted imaging and enzyme-triggered chemotherapy was successfully fabricated via a one-step assembly. In this system, a quaternary ammonium-modified tetraphenylethene derivative (QA-TPE) acted as the AIE fluorophore as well as the chemotherapeutic agent, and a water-soluble acidic polysaccharide, hyaluronic acid (HA) acted as the aggregation-inducing scaffold, AIE turn-on agent, and targeting agent for CD44 receptor-mediated cancer cells. More importantly, HA endowed the QA-TPE/HA nanoaggregate both good biocompatibility and hysteretic chemotherapy activity, which were achieved by controlling the release of QA-TPE using the endogenous HAase in CD44 receptor-mediated cancer cells.
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Affiliation(s)
- Bang-Ping Jiang
- Ministry of Education Key
Laboratory for the Chemistry and Molecular Engineering of Medicinal
Resources, School of Chemistry and Pharmaceutical Science, Guangxi Normal University, Guilin 541004, P. R. China
| | - Xueyou Tan
- Ministry of Education Key
Laboratory for the Chemistry and Molecular Engineering of Medicinal
Resources, School of Chemistry and Pharmaceutical Science, Guangxi Normal University, Guilin 541004, P. R. China
| | - Xing-Can Shen
- Ministry of Education Key
Laboratory for the Chemistry and Molecular Engineering of Medicinal
Resources, School of Chemistry and Pharmaceutical Science, Guangxi Normal University, Guilin 541004, P. R. China
| | - Wen-Qi Lei
- Ministry of Education Key
Laboratory for the Chemistry and Molecular Engineering of Medicinal
Resources, School of Chemistry and Pharmaceutical Science, Guangxi Normal University, Guilin 541004, P. R. China
| | - Wen-Qian Liang
- Ministry of Education Key
Laboratory for the Chemistry and Molecular Engineering of Medicinal
Resources, School of Chemistry and Pharmaceutical Science, Guangxi Normal University, Guilin 541004, P. R. China
| | - Shi-Chen Ji
- Ministry of Education Key
Laboratory for the Chemistry and Molecular Engineering of Medicinal
Resources, School of Chemistry and Pharmaceutical Science, Guangxi Normal University, Guilin 541004, P. R. China
| | - Hong Liang
- Ministry of Education Key
Laboratory for the Chemistry and Molecular Engineering of Medicinal
Resources, School of Chemistry and Pharmaceutical Science, Guangxi Normal University, Guilin 541004, P. R. China
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19
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Zou HH, Wang L, Long ZX, Qin QP, Song ZK, Xie T, Zhang SH, Liu YC, Lin B, Chen ZF. Preparation of 4-([2,2':6',2″-terpyridin]-4'-yl)-N,N-diethylaniline Ni(II) and Pt(II) complexes and exploration of their in vitro cytotoxic activities. Eur J Med Chem 2015; 108:1-12. [PMID: 26619388 DOI: 10.1016/j.ejmech.2015.11.005] [Citation(s) in RCA: 45] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2015] [Revised: 10/20/2015] [Accepted: 11/03/2015] [Indexed: 11/17/2022]
Abstract
Two metal complexes of NiLCl2 (1) and [PtLCl]Cl (2) with 4-([2,2':6',2″-terpyridin]-4'-yl)-N,N-diethylaniline (L) were synthesized and characterized. 1 and 2 exhibited selective cytotoxicity to T-24 cells more than L, compared with the normal liver cell line (HL-7702). Various experiments showed that L, 1 and 2 caused T-24 cell cycle arrest at S phase, as shown by the down-regulation of cdc25 A, cyclin A, cyclin B and CDK2 and the up-regulation of p21, p27 and p53. Furthermore, complexes 1 and 2, especially complex 2, acted as telomerase inhibitors targeting c-myc G-quadruplex DNA and triggered cell apoptosis. In addition, 1 and 2 also caused mitochondrial dysfunction. Taken together, we found that 1 and 2 exerted their cytotoxic activity mainly via inhibiting telomerase by interaction with c-myc quadruplex and disruption of mitochondrial function.
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Affiliation(s)
- Hua-Hong Zou
- State Key Laboratory Cultivation Base for The Chemistry and Molecular Engineering of Medicinal Resources, School of Chemistry and Pharmacy, Guangxi Normal University, 15 Yucai Road, Guilin 541004, PR China.
| | - Li Wang
- State Key Laboratory Cultivation Base for The Chemistry and Molecular Engineering of Medicinal Resources, School of Chemistry and Pharmacy, Guangxi Normal University, 15 Yucai Road, Guilin 541004, PR China
| | - Zhi-Xiang Long
- Guangxi Zhuang Autonomous Region Center for Analysis and Test Research, 32 Xinghu Road, Nanning 530022, PR China
| | - Qi-Pin Qin
- State Key Laboratory Cultivation Base for The Chemistry and Molecular Engineering of Medicinal Resources, School of Chemistry and Pharmacy, Guangxi Normal University, 15 Yucai Road, Guilin 541004, PR China
| | - Zhong-Kui Song
- Guangxi Zhuang Autonomous Region Center for Analysis and Test Research, 32 Xinghu Road, Nanning 530022, PR China
| | - Tao Xie
- Guangxi Zhuang Autonomous Region Center for Analysis and Test Research, 32 Xinghu Road, Nanning 530022, PR China
| | - Shu-Hua Zhang
- Guangxi Key Laboratory of Electrochemical and Magnetochemical Functional Materials, College of Chemistry and Bioengineering, Guilin University of Technology, Guilin 541004, PR China
| | - Yan-Cheng Liu
- State Key Laboratory Cultivation Base for The Chemistry and Molecular Engineering of Medicinal Resources, School of Chemistry and Pharmacy, Guangxi Normal University, 15 Yucai Road, Guilin 541004, PR China
| | - Bin Lin
- Nanning City No. 2 People's Hospital, 13 Dancun Road, Nanning 530031, PR China
| | - Zhen-Feng Chen
- State Key Laboratory Cultivation Base for The Chemistry and Molecular Engineering of Medicinal Resources, School of Chemistry and Pharmacy, Guangxi Normal University, 15 Yucai Road, Guilin 541004, PR China
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20
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Synthesis, characterization, biological evaluation and molecular docking of steroidal spirothiazolidinones. J Mol Struct 2015. [DOI: 10.1016/j.molstruc.2014.12.036] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
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21
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Qin QP, Chen ZF, Qin JL, He XJ, Li YL, Liu YC, Huang KB, Liang H. Studies on antitumor mechanism of two planar platinum(II) complexes with 8-hydroxyquinoline: Synthesis, characterization, cytotoxicity, cell cycle and apoptosis. Eur J Med Chem 2015; 92:302-13. [DOI: 10.1016/j.ejmech.2014.12.052] [Citation(s) in RCA: 71] [Impact Index Per Article: 7.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2014] [Revised: 12/28/2014] [Accepted: 12/29/2014] [Indexed: 11/27/2022]
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22
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Liu X, Nie S, Huang D, Xie M. Mitogen-activated protein kinase and Akt pathways are involved in 4-n-nonyphenol induced apoptosis in mouse Sertoli TM4 cells. ENVIRONMENTAL TOXICOLOGY AND PHARMACOLOGY 2015; 39:815-824. [PMID: 25748095 DOI: 10.1016/j.etap.2015.02.004] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/24/2014] [Revised: 02/04/2015] [Accepted: 02/07/2015] [Indexed: 06/04/2023]
Abstract
Nonylphenol (NP) is considered an important environmental toxicant, which may disrupt male reproductive system. The aim of this study was to investigate 4-n-nonylphenol (4-n-NP) induced apoptosis and its related mechanism in mouse Sertoli cell line, TM4 cells. Our results showed that NP treatment (0.1, 1, 10, 20 and 30 μM) decreased cell viability and induced apoptosis in the cells, accompanied by alteration of Bcl-2 family mRNA expression, activation of caspases-3, release of Ca(2+), and increase of reactive oxygen species (ROS) generation. Subsequently, it was found that the levels of superoxide dismutase (SOD), catalase (CAT) and glutathione peroxidase (GSH-PX) in the cells were markedly decreased, and maleic dialdehyde (MDA) content was increased by NP treatment. Then activation of the mitogen-activated protein kinases (MAPKs) pathways and inhibition of Akt pathway were simultaneously detected in NP challenged TM4 cells. Taken together, it was concluded that NP induced cytotoxicity and apoptosis in TM4 cells, and the apoptosis may be mediated via MAPKs and Akt pathways in addition to Ca(2+) release and ROS generation.
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Affiliation(s)
- Xiaozhen Liu
- State Key Laboratory of Food Science and Technology, Nanchang University, Nanchang 330047, China
| | - Shaoping Nie
- State Key Laboratory of Food Science and Technology, Nanchang University, Nanchang 330047, China
| | - Danfei Huang
- State Key Laboratory of Food Science and Technology, Nanchang University, Nanchang 330047, China
| | - Mingyong Xie
- State Key Laboratory of Food Science and Technology, Nanchang University, Nanchang 330047, China.
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23
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Saggu S, Sakeran MI, Zidan N, Tousson E, Mohan A, Rehman H. Ameliorating effect of chicory (Chichorium intybus L.) fruit extract against 4-tert-octylphenol induced liver injury and oxidative stress in male rats. Food Chem Toxicol 2014; 72:138-46. [PMID: 25010453 DOI: 10.1016/j.fct.2014.06.029] [Citation(s) in RCA: 73] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2014] [Revised: 06/12/2014] [Accepted: 06/29/2014] [Indexed: 01/25/2023]
Abstract
The current study was carried out to elucidate the modulating effect of chicory (Cichorium intybus L.) fruit extract (CFR) against 4-tert-OP induced oxidative stress and hepatotoxicity in male rats. Rats were divided into four groups and treated for 8 weeks as follow: group 1: normal control-treated (saline); group 2: chicory fruit extract-treated (100 mg/kg); group 3: 4-tert-OP treated; group 4: 4-tert-OP plus chicory fruit extract. The obtained results revealed that rats which received 4-tert-OP showed a significant increase in liver TBARS and bilirubin, aspartate aminotransferase (AST), alanine transaminase (ALT), alkaline phosphatase (ALP) and gamma-glutamyl transpeptidase (GGTP) activities. While a significant decrease in the levels of GSH, SOD, catalase recorded. On the other hand, CFR extract succeeded to modulate these observed abnormalities resulting from 4-tert-OP as indicated by the reduction of TBARS and the pronounced improvement of the investigated biochemical and antioxidant parameters. Histopathological evidence, together with observed PCNA and DNA fragmentation, supported the detrimental effect of 4-tert-OP and the ameliorating effect of CFR extract on liver toxicity. So, it could be concluded that chicory has a promising role and it worth to be considered as a natural substance for ameliorating the oxidative stress and hepatic injury induced by 4-tert-OP compound.
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Affiliation(s)
- Shalini Saggu
- Department of Biology, Faculty of Sciences, University of Tabuk, Tabuk 71491, Saudi Arabia
| | - Mohamed I Sakeran
- Department of Chemistry, Faculty of Sciences, Tanta University, Tanta 31527, Egypt; Department of Biochemistry, Faculty of Sciences, University of Tabuk, Tabuk 71491, Saudi Arabia.
| | - Nahla Zidan
- Department of Home Economics, Faculty of Specific Education, Kafr ElSheikh University, Egypt
| | - Ehab Tousson
- Department of Zoology, Faculty of Sciences, Tanta University, Tanta 31527, Egypt
| | - Anand Mohan
- Department of Biotechnology, Lovely Professional University, Jalandhar, Punjab, India
| | - Hasibur Rehman
- Department of Biology, Faculty of Sciences, University of Tabuk, Tabuk 71491, Saudi Arabia.
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Bado-Nilles A, Techer R, Porcher JM, Geffard A, Gagnaire B, Betoulle S, Sanchez W. Detection of immunotoxic effects of estrogenic and androgenic endocrine disrupting compounds using splenic immune cells of the female three-spined stickleback, Gasterosteus aculeatus (L.). ENVIRONMENTAL TOXICOLOGY AND PHARMACOLOGY 2014; 38:672-683. [PMID: 25238107 DOI: 10.1016/j.etap.2014.08.002] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/13/2014] [Revised: 07/25/2014] [Accepted: 08/05/2014] [Indexed: 06/03/2023]
Abstract
Today, the list of endocrine disrupting compounds (EDCs) in freshwater and marine environments that mimic or block endogenous hormones is expanding at an alarming rate. As immune and reproductive systems may interact in a bidirectional way, some authors proposed the immune capacities as attractive markers to evaluate the hormonal potential of environmental samples. Thus, the present work proposed to gain more knowledge on direct biological effects of natural and EDCs on female fish splenic leucocyte non-specific immune activities by using ex vivo assays. After determining the optimal required conditions to analyze splenic immune responses, seven different EDCs were tested ex vivo at 0.01, 1 and 100nM over 12h on the leucocyte functions of female three-spined stickleback, Gasterosteus aculeatus. In summary, we found that natural hormones acted as immunostimulants, whilst EDCs were immunosuppressive.
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Affiliation(s)
- A Bado-Nilles
- Université Reims Champagne-Ardenne, EA 4689 Unité Interactions Animal-Environnement, Moulin de la Housse, B.P. 1039, 51687 Reims, France; Institut National de l'Environnement Industriel et des Risques (INERIS), Unité d'écotoxicologie in vitro et in vivo, B.P. 2, 60550 Verneuil-en-Halatte, France.
| | - R Techer
- Institut National de l'Environnement Industriel et des Risques (INERIS), Unité d'écotoxicologie in vitro et in vivo, B.P. 2, 60550 Verneuil-en-Halatte, France
| | - J M Porcher
- Institut National de l'Environnement Industriel et des Risques (INERIS), Unité d'écotoxicologie in vitro et in vivo, B.P. 2, 60550 Verneuil-en-Halatte, France.
| | - A Geffard
- Université Reims Champagne-Ardenne, EA 4689 Unité Interactions Animal-Environnement, Moulin de la Housse, B.P. 1039, 51687 Reims, France.
| | - B Gagnaire
- Institut de Radioprotection et de Sureté Nucléaire (IRSN), Laboratoire d'Ecotoxicologie des Radionucléides, Centre de Cadarache, Bât 186, B.P. 3, 13115 Saint-Paul-lez-Durance, France.
| | - S Betoulle
- Université Reims Champagne-Ardenne, EA 4689 Unité Interactions Animal-Environnement, Moulin de la Housse, B.P. 1039, 51687 Reims, France.
| | - W Sanchez
- Institut National de l'Environnement Industriel et des Risques (INERIS), Unité d'écotoxicologie in vitro et in vivo, B.P. 2, 60550 Verneuil-en-Halatte, France.
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25
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Synthesis, crystal structure, cytotoxicity and cell apoptosis induction of a copper(II)-based Schiff base complex. Inorganica Chim Acta 2014. [DOI: 10.1016/j.ica.2014.05.041] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
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Jiang Z, Chen W, Yan X, Bi L, Guo S, Zhan Z. Paeoniflorin protects cells from GalN/TNF-α-induced apoptosis via ER stress and mitochondria-dependent pathways in human L02 hepatocytes. Acta Biochim Biophys Sin (Shanghai) 2014; 46:357-67. [PMID: 24777494 DOI: 10.1093/abbs/gmu010] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Paeoniflorin (PF) is one of the main effective components extracted from the root of Paeonia lactiflora, which has been used clinically to treat hepatitis in traditional Chinese medicine, but the details of the underlying mechanism remain unknown. The present study was designed to investigate the mechanism of protective effect of PF on d-galactosamine (GalN) and tumor necrosis factor-α (TNF-α)-induced cell apoptosis using human L02 hepatocytes. Our results confirmed that PF could attenuate GalN/TNF-α-induced apoptotic cell death in a dose-dependent manner. The disruption of mitochondrial membrane potential and the disturbance of intracellular Ca(2+) concentration were also recovered by PF. Western blot analysis revealed that GalN/TNF-α induced the activation of a number of signature endoplasmic reticulum (ER) stress and mitochondrial markers, while PF pre-treatment had a marked dose-dependent suppression on them. Additionally, the anti-apoptotic effect of PF was further evidenced by the inhibition of caspase-3/9 activities in L02 cells. These findings suggest that PF can effectively inhibit hepatocyte apoptosis and the underlying mechanism is related to the regulating mediators in ER stress and mitochondria-dependent pathways.
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Affiliation(s)
- Zequn Jiang
- Department of Preclinical Medicine, Nanjing University of Chinese Medicine, Nanjing 210023, China
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Chiu TS, Hsieh CY, Miaw CL, Lin CN, Chang TC, Yen CH, Chiou MT. Alkylphenol polyethoxylate derivatives in groundwater and blood samples collected from pig herds in Taiwan. J Vet Med Sci 2014; 76:971-5. [PMID: 24694943 PMCID: PMC4143658 DOI: 10.1292/jvms.14-0070] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
Alkylphenol polyethoxylate
(APEO) derivatives, such as nonylphenol monoethoxylate (NP1EO), nonylphenol
diethoxylate (NP2EO), nonylphenol (NP) and octylphenol (OP), have been detected
in the surface water, sediment, food and groundwater of numerous countries. Because
groundwater is the main source of water for pig herds, the aim of this study was to
measure the concentrations of APEO derivatives in groundwater and blood samples that were
collected from pig herds raised near the Wuluo River in Southern Taiwan. The mean
concentrations of NP, OP, NP1EO and NP2EO in the groundwater supply
for 10 pig herds were 0.04 µg/l, 0.26 ± 0.23
µg/l, 0.74 ± 0.69
µg/l and 0.17 ± 0.22
µg/l, respectively. NP was detected in all blood
samples collected from 5 of the 10 pig herds. The highest concentrations detected in the
blood samples collected from six-week-old piglets and sows were 12.00
µg/l and 56.94 µg/l,
respectively. Blood samples from 4 of the 5 herds showed OP contamination. The highest OP
concentrations detected in 6-week-old piglets and sows were 275.58
µg/l and 566.32
µg/l, respectively. These results indicate that APEO
derivatives accumulated in the groundwater supply and the bloodstreams of the pigs.
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Affiliation(s)
- Tai-Shun Chiu
- Department of Veterinary Medicine, National Pingtung University of Science and Technology, Nei-pu, Pingtung 912, Taiwan, ROC
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Jiang ZQ, Yan XJ, Bi L, Chen JP, Zhou Q, Chen WP. Mechanism for hepato-protective action of Liangxue Huayu Recipe (LHR): blockade of mitochondrial cytochrome c release and caspase activation. JOURNAL OF ETHNOPHARMACOLOGY 2013; 148:851-860. [PMID: 23711831 DOI: 10.1016/j.jep.2013.05.024] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/16/2013] [Revised: 05/14/2013] [Accepted: 05/15/2013] [Indexed: 06/02/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE Liangxue Huayu Recipe (LHR) as a classical prescription is clinically employed to treat liver diseases in traditional Chinese medicine. AIM OF STUDY In this study, we attempt to show that LHR attenuates hepatocyte apoptosis and hepatic injury induced by lipopolysaccharide (LPS) and D-galactosamine (GalN) in rats. The present study was also designed to examine whether LHR had the protective effects on d-GalN and tumor necrosis factor-α (TNF-α)-treated human L02 hepatocytes and its possible association with the mitochondrial pathway. MATERIALS AND METHODS LHR is composed of three traditional Chinese medicines: Herba Rehmannia, Rhubarb and Radix Paeoniae Rubra. LHR at 541, 1082 and 2164 mg/kg was orally administered to model and normal rats for 7 days. The effects of LHR on serum levels of liver enzymes, including alanine aminotransferase (ALT) and aspartate aminotransferase (AST), were measured. Hepatocyte apoptosis in vivo was assessed by terminal deoxynucleotidyl transferase-mediated dUTP-biotin nick-end labeling (TUNEL) method. Apoptosis in vitro and related morphological changes of human L02 hepatocytes were determined by high content screening (HCS) assay. The expression levels of Bcl-2, Bax and cytochrome c were detected by Western-blot analysis in L02 cells. In addition, the activities of caspase-3 and caspase-9 were tested by enzyme-linked immunosorbent detector. RESULTS It revealed that LHR pretreatment effectively ameliorated the GalN/LPS-induced elevation of serum ALT and AST levels, and attenuated hepatocyte apoptosis in the rat model characterized by the addition of GalN/LPS. In subsequent experiments in vitro, LHR also attenuated GalN/TNF-α-induced apoptosis in human L02 hepatocytes. Furthermore, LHR improved the mitochondrial function, inhibited the upregulation of Bax/Bcl-2 protein ratio, decreased the release of cytochrome c from the mitochondria into the cytosol, as well as inhibited caspase-3 and caspase-9 activation in this cell model. CONCLUSIONS These results indicate that LHR is effective in attenuating hepatocyte apoptosis both in vivo and in vitro, and this effect is partly mediated through the activation of the mitochondrial pathway and subsequent regulation of particular pro-apoptotic gene expression.
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Affiliation(s)
- Ze-Qun Jiang
- Department of Preclinical Medicine, Nanjing University of Chinese Medicine, 138 Xianlin Rd., Nanjing 210023, China
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29
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Choi MS, Park HJ, Oh JH, Lee EH, Park SM, Yoon S. Nonylphenol-induced apoptotic cell death in mouse TM4 Sertoli cells via the generation of reactive oxygen species and activation of the ERK signaling pathway. J Appl Toxicol 2013; 34:628-36. [DOI: 10.1002/jat.2886] [Citation(s) in RCA: 47] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2012] [Revised: 03/05/2013] [Accepted: 03/19/2013] [Indexed: 11/12/2022]
Affiliation(s)
- Mi-Sun Choi
- Division of Toxicological Research; Korea Institute of Toxicology; Daejeon 305-343 Korea
| | - Han-Jin Park
- Division of Toxicological Research; Korea Institute of Toxicology; Daejeon 305-343 Korea
| | - Jung-Hwa Oh
- Division of Toxicological Research; Korea Institute of Toxicology; Daejeon 305-343 Korea
| | - Eun-Hee Lee
- Division of Toxicological Research; Korea Institute of Toxicology; Daejeon 305-343 Korea
- Pharmacology and Toxicology, School of Engineering; University of Science and Technology; Daejeon 305-350 Korea
| | - Se-Myo Park
- Division of Toxicological Research; Korea Institute of Toxicology; Daejeon 305-343 Korea
| | - Seokjoo Yoon
- Division of Toxicological Research; Korea Institute of Toxicology; Daejeon 305-343 Korea
- Pharmacology and Toxicology, School of Engineering; University of Science and Technology; Daejeon 305-350 Korea
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Scutellaria baicalensis Extracts and Flavonoids Protect Rat L6 Cells from Antimycin A-Induced Mitochondrial Dysfunction. EVIDENCE-BASED COMPLEMENTARY AND ALTERNATIVE MEDICINE 2012; 2012:517965. [PMID: 22969827 PMCID: PMC3437297 DOI: 10.1155/2012/517965] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/11/2012] [Revised: 07/20/2012] [Accepted: 07/23/2012] [Indexed: 11/17/2022]
Abstract
Antimycin A (AMA) damages mitochondria by inhibiting mitochondrial electron transport and can produce reactive oxygen species (ROS). ROS formation, aging, and reduction of mitochondrial biogenesis contribute to mitochondrial dysfunction. The present study sought to investigate extracts of Scutellaria baicalensis and its flavonoids (baicalin, baicalein, and wogonin), whether they could protect mitochondria against oxidative damage. The viability of L6 cells treated with AMA increased in the presence of flavonoids and extracts of S. baicalensis. ATP production decreased in the AMA treated group, but increased by 50% in cells treated with flavonoids (except wogonin) and extracts of S. baicalensis compared to AMA-treated group. AMA treatment caused a significant reduction (depolarized) in mitochondrial membrane potential (MMP), whereas flavonoid treatment induced a significant increase in MMP. Mitochondrial superoxide levels increased in AMA treated cells, whereas its levels decreased when cells were treated with flavonoids or extracts of S. baicalensis. L6 cells treated with flavonoids and extracts of S. baicalensis increased their levels of protein expression compared with AMA-treated cells, especially water extracts performed the highest levels of protein expression. These results suggest that the S. baicalensis extracts and flavonoids protect against AMA-induced mitochondrial dysfunction by increasing ATP production, upregulating MMP, and enhancing mitochondrial function.
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31
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Electrochemical determination of nonylphenol based on ionic liquid-functionalized graphene nanosheet modified glassy carbon electrode and its interaction with DNA. J Solid State Electrochem 2012. [DOI: 10.1007/s10008-012-1710-y] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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32
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Toyooka T, Kubota T, Ibuki Y. Nonylphenol polyethoxylates induce phosphorylation of histone H2AX. MUTATION RESEARCH-GENETIC TOXICOLOGY AND ENVIRONMENTAL MUTAGENESIS 2012; 741:57-64. [DOI: 10.1016/j.mrgentox.2011.10.006] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/29/2011] [Revised: 09/02/2011] [Accepted: 10/09/2011] [Indexed: 10/15/2022]
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Kaptaner B, Unal G. Effects of 17α-ethynylestradiol and nonylphenol on liver and gonadal apoptosis and histopathology in Chalcalburnus tarichi. ENVIRONMENTAL TOXICOLOGY 2011; 26:610-22. [PMID: 20549615 DOI: 10.1002/tox.20585] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/25/2009] [Revised: 02/11/2010] [Accepted: 02/13/2010] [Indexed: 05/21/2023]
Abstract
Chalcalburnus tarichi is an endemic cyprinid fish living in the Lake Van basin located in the Eastern Turkey. Fish (3+ ages) were exposed to 17α-ethynylestradiol (EE(2); 1, 10, 100 ng L(-1); nominal concentrations) and nonylphenol (NP; 10, 60, 200 μg L(-1) ; nominal concentrations) for 32 days under semistatic daily renewal conditions. The exposure period was followed by an evaluation of liver and gonadal apoptosis and gonad histopathology in males and females. Exposure to the highest concentrations of EE(2) (100 ng L(-1)) and NP (200 μg L(-1) ) caused significant increases in the extent of apoptosis in liver and gonads. Treatment with 100 ng L(-1) of EE(2) and 200 μg L(-1) NP increased the number of TUNEL positive hepatocytes significantly in both sexes compared to controls. The rates of apoptosis in testicular germ cells and ovarian follicular cells were significantly greater at the same concentrations. Exposure to EE(2) (100 ng L(-1)) and NP (60 and 200 μg L(-1)) caused thickening of interstitial connective tissue (fibrosis) in the seminiferous tubule wall and testis-ova formation in males. In females treated with 100 ng L(-1) EE(2) , increased percentage of atretic ooctytes and fibrotic areas in the ovarian somatic stromal tissue were found in the ovaries. Increase in atresia, without a statistical significance, and fibrotic stromal tissue were also noted in 60 and 200 μg L(-1) NP treatments. Results suggest that EE(2) - and NP-dependent hepatotoxicity and gonadotoxicity are causally related to the increase in apoptosis in C. tarichi.
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Affiliation(s)
- Burak Kaptaner
- Department of Biology, Science and Arts Faculty, Yüzüncü Yil University, 65080 Van, Turkey.
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Wang M, Ruan Y, Chen Q, Li S, Wang Q, Cai J. Curcumin induced HepG2 cell apoptosis-associated mitochondrial membrane potential and intracellular free Ca(2+) concentration. Eur J Pharmacol 2010; 650:41-7. [PMID: 20883687 DOI: 10.1016/j.ejphar.2010.09.049] [Citation(s) in RCA: 96] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2010] [Revised: 08/28/2010] [Accepted: 09/07/2010] [Indexed: 02/06/2023]
Abstract
Curcumin is a phytochemicals which is able to inhibit carcinogenesis in a variety of cell lines. However little is known about its effect on the cell-surface and the interaction between cell-surface and the reacting drug. In this study, we found that curcumin could inhibit the growth of human hepatocellular carcinoma cell line (HepG2), change the cell-surface morphology and trigger the pro-apoptotic factor to promote cell apoptosis. Cell counting kit results indicated that the cell viability had a dose-dependent relationship with the curcumin concentration in 24h. The 50% inhibiting concentration (IC50) was 17.5±3.2μM. It was clear that curcumin could lead to apoptosis, and the apoptosis increased as the reacting concentration goes up. Moreover, curcumin could also affect the disruption of mitochondrial membrane potential and the disturbance of intracellular free Ca(2+) concentration. All these alterations changed the cell morphology and cell-surface ultrastructure with atomic force microscopy (AFM) detecting at nanoscale level. AFM results indicated that cells in control group clearly revealed a typical long spindle-shaped morphology. Cell tails was wide and unrolled. The ultrastructure showed that cell membrane was made up of many nanoparticles. After being treated with curcumin, cell tail was narrowed. The size of membrane nanoparticles became small. These results can improve our understanding of curcumin which can be potentially developed as a new agent for treatment of hepatocellular carcinoma since it has been reported to have a low cytotoxic effect on healthy cell. AFM can be used as a powerful tool for detecting ultrastructures.
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Affiliation(s)
- Mu Wang
- Department of Chemistry, Jinan University, 601 Huangpu Road West, Tianhe District, Guangzhou, 510632, PR China
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Udoji F, Martin T, Etherton R, Whalen MM. Immunosuppressive effects of triclosan, nonylphenol, and DDT on human natural killer cells in vitro. J Immunotoxicol 2010; 7:205-12. [PMID: 20297919 PMCID: PMC2890036 DOI: 10.3109/15476911003667470] [Citation(s) in RCA: 37] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023] Open
Abstract
Human natural killer (NK) cells are a first-line immune defense against tumor cells and virally-infected cells. If their function is impaired, it leaves an individual more susceptible to cancer development or viral infection. The ability of compounds that contaminate the environment to suppress the function of NK cells could contribute to the increased risk of cancer development. There are a wide spectrum of compounds that significantly contaminate water and food that are consumed by humans, leading to accumulation of some of these compounds in human tissues. In the current study, we examined the ability of three such compounds to diminish the function of human NK cells. Triclosan (TC) is an antimicrobial agent used in a large number of antibacterial soaps. Nonylphenol (NP) is a degradation product of compounds used as surfactants and as stabilizers in plastics. 4,4'-Dichlorodiphenyltrichloroethane (DDT) is a pesticide that is mainly used to control mosquitoes. The compounds were examined for their ability to suppress NK function following exposures of 1 h, 24 h, 48 h, and 6 days. Each agent was able to substantially decrease NK lytic function within 24 h. At a concentration of 5 microM, both TC and NP inhibited NK lytic function by 87 and 30%, respectively; DDT decreased function by 55% at 2.5 microM. The negative effects of each of these compounds persisted and/or intensified following a brief (1 h) exposure to the compounds, indicating that the impairment of function cannot be eliminated by removal of the compound under in vitro conditions.
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Affiliation(s)
- Felicia Udoji
- Department of Biological Sciences, Tennessee State University, Nashville, TN 37209
| | - Tamara Martin
- Department of Biological Sciences, Tennessee State University, Nashville, TN 37209
| | - Rachel Etherton
- Department of Chemistry, Tennessee State University, Nashville, TN 37209
| | - Margaret M. Whalen
- Department of Chemistry, Tennessee State University, Nashville, TN 37209
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The involvement of ROS overproduction and mitochondrial dysfunction in PBDE-47-induced apoptosis on Jurkat cells. ACTA ACUST UNITED AC 2010; 63:413-7. [PMID: 20304619 DOI: 10.1016/j.etp.2010.02.018] [Citation(s) in RCA: 72] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2009] [Revised: 02/02/2010] [Accepted: 02/28/2010] [Indexed: 11/20/2022]
Abstract
2,2',4,4'-Tetrabromodiphenyl ether (PBDE-47), as one of the congeners of polybrominated diphenyl ethers (PBDEs), is widely present and threatens the human health in many aspects. This study aims to investigate the toxic effects of PBDE-47 on cell viability, apoptosis, reactive oxygen species (ROS) and mitochondrial membrane potential (MMP) of Jurkat cells in vitro. The results showed that PBDE-47 significantly inhibited the viability of Jurkat cells in a dose-dependent manner by alamar blue assay. Significant induction of apoptosis was detected in Jurkat cells at 25-100 μM by propidium iodide staining, accompanied with overproduction of ROS and downregulation of MMP. Furthermore, N-acetyl-L-cysteine (NAC), a widely used ROS scavenger, significantly reduced the PBDE-47-induced apoptosis by decreasing ROS level and mediating recovery of the MMP. In conclusion, the results of this study suggest that PBDE-47 could induce apoptosis in Jurkat cells and ROS and mitochondrial dysfunction play important roles in the apoptotic process.
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37
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Kuo CC, Kuo DH, Huang CJ, Fang YC, Shieh P, Chen FA, Shaw CF, Jan CR. Nonylphenol-induced apoptotic pathways in SCM1 human gastric cancer cells. Drug Dev Res 2009. [DOI: 10.1002/ddr.20355] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
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Tsai JY, Huang CC, Cheng HH, Lin KL, Liao WC, Jan CR. Nonylphenol-induced cytosolic Ca2+elevation and death in renal tubular cells. Drug Dev Res 2009. [DOI: 10.1002/ddr.20313] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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Effects of nonylphenol on motility and subcellular elements of epididymal rat sperm. Reprod Toxicol 2009; 28:542-9. [PMID: 19539023 DOI: 10.1016/j.reprotox.2009.06.007] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2008] [Revised: 05/20/2009] [Accepted: 06/05/2009] [Indexed: 01/28/2023]
Abstract
Nonylphenol (NP) is an important environmental toxicant and potential endocrine disrupting chemical. The objective of these studies was to determine the effects of NP on epididymal rat sperm in vitro. Epididymal sperm samples from Sprague-Dawley rats were incubated in 1, 10, 100, 250, and 500 microg/ml NP for 1, 2, 3, or 4h. Computer-assisted sperm analysis was used to determine motility. Epifluorescent microscopy was used to determine acrosomal status and flow cytometry was used to determine mitochondrial membrane potential (MMP) and chromatin integrity. Exposure of epididymal rat sperm to 250 or 500 microg/ml NP was highly detrimental to motility (P<0.05), with complete loss of motility observed after exposure to 500 microg/ml NP (P<0.05). The acrosomal integrity of sperm was significantly reduced with the lowest concentration (1 microg/ml) of NP, and higher concentrations resulted in a dose-dependent induction of the acrosomal reaction (P<0.05). Similarly, the percentage of sperm with high MMP declined dramatically after exposure to 100, 250, and 500 microg/ml NP (P<0.05). Duration of NP exposure did not have any effect on motility or MMP and NP did not appear to have detrimental effects on chromatin integrity (P>0.05). These results indicate that major mechanism of action of NP on rat sperm is by adversely affecting their acrosomal integrity. However, NP-induced impaired sperm motility, decreased mitochondrial membrane potential also likely to play an important role in destruction of sperm function.
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40
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Wu J, Wang F, Gong Y, Li D, Sha J, Huang X, Han X. Proteomic Analysis of Changes Induced By Nonylphenol in Sprague−Dawley Rat Sertoli Cells. Chem Res Toxicol 2009; 22:668-75. [DOI: 10.1021/tx800406z] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Affiliation(s)
- Jiang Wu
- Immunology and Reproductive Biology Laboratory, Medical School, Nanjing University, Nanjing, 210093, P. R. China, Jiangsu Key Laboratory of Molecular Medicine, Medical School, Nanjing University, Nanjing, 210093, P. R. China, and Laboratory of Reproductive Medicine, Nanjing Medical University, Nanjing, 210029, P. R. China
| | - Fuqiang Wang
- Immunology and Reproductive Biology Laboratory, Medical School, Nanjing University, Nanjing, 210093, P. R. China, Jiangsu Key Laboratory of Molecular Medicine, Medical School, Nanjing University, Nanjing, 210093, P. R. China, and Laboratory of Reproductive Medicine, Nanjing Medical University, Nanjing, 210029, P. R. China
| | - Yi Gong
- Immunology and Reproductive Biology Laboratory, Medical School, Nanjing University, Nanjing, 210093, P. R. China, Jiangsu Key Laboratory of Molecular Medicine, Medical School, Nanjing University, Nanjing, 210093, P. R. China, and Laboratory of Reproductive Medicine, Nanjing Medical University, Nanjing, 210029, P. R. China
| | - Dongmei Li
- Immunology and Reproductive Biology Laboratory, Medical School, Nanjing University, Nanjing, 210093, P. R. China, Jiangsu Key Laboratory of Molecular Medicine, Medical School, Nanjing University, Nanjing, 210093, P. R. China, and Laboratory of Reproductive Medicine, Nanjing Medical University, Nanjing, 210029, P. R. China
| | - Jiahao Sha
- Immunology and Reproductive Biology Laboratory, Medical School, Nanjing University, Nanjing, 210093, P. R. China, Jiangsu Key Laboratory of Molecular Medicine, Medical School, Nanjing University, Nanjing, 210093, P. R. China, and Laboratory of Reproductive Medicine, Nanjing Medical University, Nanjing, 210029, P. R. China
| | - Xiaoyan Huang
- Immunology and Reproductive Biology Laboratory, Medical School, Nanjing University, Nanjing, 210093, P. R. China, Jiangsu Key Laboratory of Molecular Medicine, Medical School, Nanjing University, Nanjing, 210093, P. R. China, and Laboratory of Reproductive Medicine, Nanjing Medical University, Nanjing, 210029, P. R. China
| | - Xiaodong Han
- Immunology and Reproductive Biology Laboratory, Medical School, Nanjing University, Nanjing, 210093, P. R. China, Jiangsu Key Laboratory of Molecular Medicine, Medical School, Nanjing University, Nanjing, 210093, P. R. China, and Laboratory of Reproductive Medicine, Nanjing Medical University, Nanjing, 210029, P. R. China
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Cai X, Gao S, Cai J, Wu Y, Deng H. Artesunate induced morphological and mechanical changes of Jurkat cell studied by AFM. SCANNING 2009; 31:83-89. [PMID: 19343740 DOI: 10.1002/sca.20144] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Abstract
In this study, we have used atomic force microscopy (AFM) to study the morphology and mechanical property changes of Jurkat cells exposed to different concentrations of Artesunate (ART) for 24 h at single cellular level. Cell viability and proliferation assays were performed by using the Cell Counting Kit-8. The concentration of ART, which resulted in the inhibition rate >50% was selected. The AFM images revealed that the cell membrane changed and the ultrastructure also became complex. Mechanical properties of individual cell were tracked with AFM-based force spectroscopy. The force curves revealed that when a cell was exposed to the ART, the mechanical properties changed obviously. Treated cells had a lower adhesion force of 416.8+/-37.9 pN, whereas control group had a higher adhesion force of 1064.2+/-97.0 pN. The Young's modulus decreased to nearly one-third, from control group of 0.648+/-0.037 kPa to treated group of 0.254+/-0.035 kPa and the stiffness increased to nearly 1.5 times, from control group of 1.231+/-0.084 mN/m to treated group of 1.917+/-0.137 mN/m. These results suggest that ART can inhibit the proliferation of Jurkat and induce changes in the morphological structure and mechanical properties of Jurkat cells. The high resolution and high sensitivity of AFM can be used to detect morphological and mechanical properties of cells exposed to ART. The AFM may be developed to be a useful tool for detecting the cell death and evaluating the anti-carcinogen efficacy against tumor cell. SCANNING 31: 83-89, 2009. (c) 2009 Wiley Periodicals, Inc.
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Affiliation(s)
- Xiaofang Cai
- Department of Chemistry, Life Science and Technology College, Jinan University, Guangzhou, China
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Wang ZY, Zhao Y, Ren L, Jin LH, Sun LP, Yin P, Zhang YF, Zhang QQ. Novel gelatin-siloxane nanoparticles decorated by Tat peptide as vectors for gene therapy. NANOTECHNOLOGY 2008; 19:445103. [PMID: 21832720 DOI: 10.1088/0957-4484/19/44/445103] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
In principle, the technique of gene delivery involves taking complete or parts of genes that can code specific messages and delivering them to selected cells in the body. Such a transfer of plasmid DNA into mammalian cells has posed major challenges for gene therapy. A series of gelatin-siloxane nanoparticles (GS NPs) with controlled size and surface charge were synthesized through a two-step sol-gel process. In order to increase the efficiency of cellular uptake, HIV-derived Tat peptide was further grafted to GS NPs. In vitro co-location and endocytosis inhibition experiments suggested that the as-synthesized TG NPs may enter HeLa cells via a combined pathway of lipid-raft- and receptor-dependent endocytosis, and only cause little cell damage. Moreover, this study shows the encapsulation of a plasmid DNA in TG NPs to be obtained as a non-viral gene vector. This kind of encapsulation provides complete protection to the plasmid DNA from the external DNase and serum environment, and generates the hope that the resulting formulation can be developed into a potential vector for effective gene delivery. In order to check this potential, the reporter gene pSVβ-gal was encapsulated, and in vitro transfection efficiency of this system was found to be nearly 130% compared to the commercially available transfection reagent Lipofectamine™.
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Affiliation(s)
- Zu-Yong Wang
- Research Center of Biomedical Engineering, Department of Biomaterials, College of Materials, Xiamen University, Xiamen 361005, People's Republic of China
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Huang R, Southall N, Cho MH, Xia M, Inglese J, Austin CP. Characterization of diversity in toxicity mechanism using in vitro cytotoxicity assays in quantitative high throughput screening. Chem Res Toxicol 2008; 21:659-67. [PMID: 18281954 DOI: 10.1021/tx700365e] [Citation(s) in RCA: 55] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Assessing the potential health risks of environmental chemical compounds is an expensive undertaking that has motivated the development of new alternatives to traditional in vivo toxicological testing. One approach is to stage the evaluation, beginning with less expensive and higher throughput in vitro testing before progressing to more definitive trials. In vitro testing can be used to generate a hypothesis about a compound's mechanism of action, which can then be used to design an appropriate in vivo experiment. Here we begin to address the question of how to design such a battery of in vitro cell-based assays by combining data from two different types of assays, cell viability and caspase activation, with the aim of elucidating the mechanism of action. Because caspase activation is a transient event during apoptosis, it is not possible to design a single end-point assay protocol that would identify all instances of compound-induced caspase activation. Nevertheless, useful information about compound mechanism of action can be obtained from these assays in combination with cell viability data. Unsupervised clustering in combination with Dunn's cluster validity index is a robust method for identifying mechanisms of action without requiring any a priori knowledge about mechanisms of toxicity. The performance of this clustering method is evaluated by comparing the clustering results against literature annotations of compound mechanisms.
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Affiliation(s)
- Ruili Huang
- NIH Chemical Genomics Center, National Institutes of Health, Bethesda, Maryland 20892-3370, USA.
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