51
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Tabuchi Y, Uchiyama H, Zhao QL, Yunoki T, Andocs G, Nojima N, Takeda K, Ishikawa K, Hori M, Kondo T. Effects of nitrogen on the apoptosis of and changes in gene expression in human lymphoma U937 cells exposed to argon-based cold atmospheric pressure plasma. Int J Mol Med 2016; 37:1706-14. [PMID: 27121589 DOI: 10.3892/ijmm.2016.2574] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2015] [Accepted: 04/07/2016] [Indexed: 11/06/2022] Open
Abstract
Cold atmospheric pressure plasma (CAP) is known as a source of biologically active agents, such as reactive oxygen species (ROS) and reactive nitrogen species (RNS). In the present study, we examined the effects of nitrogen (N2) on the apoptosis of and changes in gene expression in human lymphoma U937 cells exposed to argon (Ar)-CAP. Enormous amounts of hydroxyl (·OH) radicals in aqueous solution were produced using Ar‑CAP generated using a 20 kHz low frequency at 18 kV with a flow rate of 2 l/min. The increase in the levels of ·OH radicals was significantly attenuated by the addition of N2 to Ar gas. On the other hand, the level of total nitrate/nitrite in the supernatant was significantly elevated in the Ar + N2-CAP‑exposed U937 cells. When the cells were exposed to Ar‑CAP, a significant increase in apoptosis was observed, whereas apoptosis was markedly decreased in the cells exposed to Ar + N2-CAP. Microarray and pathway analyses revealed that a newly identified gene network containing a number of heat shock proteins (HSPs), anti-apoptotic genes, was mainly associated with the biological function of the prevention of apoptosis. Quantitative PCR revealed that the expression levels of HSPs were significantly elevated in the cells exposed to Ar + N2-CAP than those exposed to Ar‑CAP. These results indicate that N2 gas in Ar‑CAP modifies the ratio of ROS to RNS, and suppresses the apoptosis induced by Ar‑CAP. The modulation of gaseous conditions in CAP may thus prove to be useful for future clinical applications, such as for switching from a sterilizing mode to cytocidal effect for cancer cells.
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Affiliation(s)
- Yoshiaki Tabuchi
- Division of Molecular Genetics Research, Life Science Research Center, University of Toyama, Toyama 930-0194, Japan
| | | | - Qing-Li Zhao
- Department of Radiological Sciences, Graduate School of Medicine and Pharmaceutical Sciences, University of Toyama, Toyama 930-0194, Japan
| | - Tatsuya Yunoki
- Department of Radiological Sciences, Graduate School of Medicine and Pharmaceutical Sciences, University of Toyama, Toyama 930-0194, Japan
| | - Gabor Andocs
- Tateyama Machine Co., Ltd., Toyama 930-1305, Japan
| | | | - Keigo Takeda
- Plasma Nanotechnology Research Center, Nagoya University, Nagoya 464-8601, Japan
| | - Kenji Ishikawa
- Plasma Nanotechnology Research Center, Nagoya University, Nagoya 464-8601, Japan
| | - Masaru Hori
- Plasma Nanotechnology Research Center, Nagoya University, Nagoya 464-8601, Japan
| | - Takashi Kondo
- Department of Radiological Sciences, Graduate School of Medicine and Pharmaceutical Sciences, University of Toyama, Toyama 930-0194, Japan
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52
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Parchur AK, Li Q, Zhou A. Near-infrared photothermal therapy of Prussian-blue-functionalized lanthanide-ion-doped inorganic/plasmonic multifunctional nanostructures for the selective targeting of HER2-expressing breast cancer cells. Biomater Sci 2016; 4:1781-1791. [DOI: 10.1039/c6bm00306k] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
Multifunctional nanostructure for photothermal therapy of cancer cells.
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Affiliation(s)
- Abdul K. Parchur
- Department of Biological Engineering
- Utah State University
- Logan
- USA
| | - Qifei Li
- Department of Biological Engineering
- Utah State University
- Logan
- USA
| | - Anhong Zhou
- Department of Biological Engineering
- Utah State University
- Logan
- USA
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53
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Ren L, Wang Z, An L, Zhang Z, Tan K, Miao K, Tao L, Cheng L, Zhang Z, Yang M, Wu Z, Tian J. Dynamic comparisons of high-resolution expression profiles highlighting mitochondria-related genes between in vivo and in vitro fertilized early mouse embryos. Hum Reprod 2015; 30:2892-911. [PMID: 26385791 DOI: 10.1093/humrep/dev228] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2015] [Accepted: 08/24/2015] [Indexed: 12/11/2022] Open
Abstract
STUDY QUESTION Does in vitro fertilization (IVF) induce comprehensive and consistent changes in gene expression associated with mitochondrial biogenesis and function in mouse embryos from the pre- to post-implantation stage? SUMMARY ANSWER IVF-induced consistent mitochondrial dysfunction in early mouse embryos by altering the expression of a number of mitochondria-related genes. WHAT IS KNOWN ALREADY Although IVF is generally safe and successful for the treatment of human infertility, there is increasing evidence that those conceived by IVF suffer increased health risks. The mitochondrion is a multifunctional organelle that plays a crucial role in early development. We hypothesized that mitochondrial dysfunction is associated with increased IVF-induced embryonic defects and risks in offspring. STUDY DESIGN, SIZE, DURATION After either IVF and development (IVO groups as control) or IVF and culture (IVF groups), blastocysts were collected and transferred to pseudo-pregnant recipient mice. Both IVO and IVF embryos were sampled at E3.5, E7.5 and E10.5, and the expression profiles of mitochondria-related genes from the pre- to post-implantation stage were compared. PARTICIPANTS/MATERIALS, SETTING, METHODS ICR mice (5- to 6-week-old males and 8- to 9-week-old females) were used to generate IVO and IVF blastocysts. Embryo day (E) 3.5 blastocysts were transferred to pseudo-pregnant recipient mice. Both IVO and IVF embryos were sampled at E3.5, E7.5 and E10.5 for generating transcriptome data. Mitochondria-related genes were filtered for dynamic functional profiling. Mitochondrial dysfunctions indicated by bioinformatic analysis were further validated using cytological and molecular detection, morphometric and phenotypic analysis and integrated analysis with other high-throughput data. MAIN RESULTS AND THE ROLE OF CHANCE A total of 806, 795 and 753 mitochondria-related genes were significantly (P < 0.05) dysregulated in IVF embryos at E3.5, E7.5 and E10.5, respectively. Dynamic functional profiling, together with cytological and molecular investigations, indicated that IVF-induced mitochondrial dysfunctions mainly included: (i) inhibited mitochondrial biogenesis and impaired maintenance of DNA methylation of mitochondria-related genes during the post-implantation stage; (ii) dysregulated glutathione/glutathione peroxidase (GSH/Gpx) system and increased mitochondria-mediated apoptosis; (iii) disturbed mitochondrial β-oxidation, oxidative phosphorylation and amino acid metabolism; and (iv) disrupted mitochondrial transmembrane transport and membrane organization. We also demonstrated that some mitochondrial dysfunctions in IVF embryos, including impaired mitochondrial biogenesis, dysregulated GSH homeostasis and reactive oxygen species-induced apoptosis, can be rescued by treatment with melatonin, a mitochondria-targeted antioxidant, during in vitro culture. LIMITATIONS, REASONS FOR CAUTION Findings in mouse embryos and fetuses may not be fully transferable to humans. Further studies are needed to confirm these findings and to determine their clinical significance better. WIDER IMPLICATIONS OF THE FINDINGS The present study provides a new insight in understanding the mechanism of IVF-induced aberrations during embryonic development and the increased health risks in the offspring. In addition, we highlighted the possibility of improving existing IVF systems by modulating mitochondrial functions.
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Affiliation(s)
- Likun Ren
- Ministry of Agriculture Key Laboratory of Animal Genetics, Breeding and Reproduction, National Engineering Laboratory for Animal Breeding, College of Animal Sciences and Technology, China Agricultural University, Haidian District, Beijing 100193, China
| | - Zhuqing Wang
- Ministry of Agriculture Key Laboratory of Animal Genetics, Breeding and Reproduction, National Engineering Laboratory for Animal Breeding, College of Animal Sciences and Technology, China Agricultural University, Haidian District, Beijing 100193, China
| | - Lei An
- Ministry of Agriculture Key Laboratory of Animal Genetics, Breeding and Reproduction, National Engineering Laboratory for Animal Breeding, College of Animal Sciences and Technology, China Agricultural University, Haidian District, Beijing 100193, China
| | - Zhennan Zhang
- Ministry of Agriculture Key Laboratory of Animal Genetics, Breeding and Reproduction, National Engineering Laboratory for Animal Breeding, College of Animal Sciences and Technology, China Agricultural University, Haidian District, Beijing 100193, China
| | - Kun Tan
- Ministry of Agriculture Key Laboratory of Animal Genetics, Breeding and Reproduction, National Engineering Laboratory for Animal Breeding, College of Animal Sciences and Technology, China Agricultural University, Haidian District, Beijing 100193, China
| | - Kai Miao
- Ministry of Agriculture Key Laboratory of Animal Genetics, Breeding and Reproduction, National Engineering Laboratory for Animal Breeding, College of Animal Sciences and Technology, China Agricultural University, Haidian District, Beijing 100193, China
| | - Li Tao
- Ministry of Agriculture Key Laboratory of Animal Genetics, Breeding and Reproduction, National Engineering Laboratory for Animal Breeding, College of Animal Sciences and Technology, China Agricultural University, Haidian District, Beijing 100193, China
| | - Linghua Cheng
- Ministry of Agriculture Key Laboratory of Animal Genetics, Breeding and Reproduction, National Engineering Laboratory for Animal Breeding, College of Animal Sciences and Technology, China Agricultural University, Haidian District, Beijing 100193, China
| | - Zhenni Zhang
- Ministry of Agriculture Key Laboratory of Animal Genetics, Breeding and Reproduction, National Engineering Laboratory for Animal Breeding, College of Animal Sciences and Technology, China Agricultural University, Haidian District, Beijing 100193, China
| | - Mingyao Yang
- Ministry of Agriculture Key Laboratory of Animal Genetics, Breeding and Reproduction, National Engineering Laboratory for Animal Breeding, College of Animal Sciences and Technology, China Agricultural University, Haidian District, Beijing 100193, China
| | - Zhonghong Wu
- Ministry of Agriculture Key Laboratory of Animal Genetics, Breeding and Reproduction, National Engineering Laboratory for Animal Breeding, College of Animal Sciences and Technology, China Agricultural University, Haidian District, Beijing 100193, China
| | - Jianhui Tian
- Ministry of Agriculture Key Laboratory of Animal Genetics, Breeding and Reproduction, National Engineering Laboratory for Animal Breeding, College of Animal Sciences and Technology, China Agricultural University, Haidian District, Beijing 100193, China
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54
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Uchiyama H, Zhao QL, Hassan MA, Andocs G, Nojima N, Takeda K, Ishikawa K, Hori M, Kondo T. EPR-Spin Trapping and Flow Cytometric Studies of Free Radicals Generated Using Cold Atmospheric Argon Plasma and X-Ray Irradiation in Aqueous Solutions and Intracellular Milieu. PLoS One 2015; 10:e0136956. [PMID: 26318000 PMCID: PMC4552761 DOI: 10.1371/journal.pone.0136956] [Citation(s) in RCA: 50] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2014] [Accepted: 08/12/2015] [Indexed: 01/10/2023] Open
Abstract
Electron paramagnetic resonance (EPR)-spin trapping and flow cytometry were used to identify free radicals generated using argon-cold atmospheric plasma (Ar-CAP) in aqueous solutions and intracellularly in comparison with those generated by X-irradiation. Ar-CAP was generated using a high-voltage power supply unit with low-frequency excitation. The characteristics of Ar-CAP were estimated by vacuum UV absorption and emission spectra measurements. Hydroxyl (·OH) radicals and hydrogen (H) atoms in aqueous solutions were identified with the spin traps 5,5-dimethyl-1-pyrroline N-oxide (DMPO), 3,3,5,5-tetramethyl-1-pyrroline-N-oxide (M4PO), and phenyl N-t-butylnitrone (PBN). The occurrence of Ar-CAP-induced pyrolysis was evaluated using the spin trap 3,5-dibromo-4-nitrosobenzene sulfonate (DBNBS) in aqueous solutions of DNA constituents, sodium acetate, and L-alanine. Human lymphoma U937 cells were used to study intracellular oxidative stress using five fluorescent probes with different affinities to a number of reactive species. The analysis and quantification of EPR spectra revealed the formation of enormous amounts of ·OH radicals using Ar-CAP compared with that by X-irradiation. Very small amounts of H atoms were detected whereas nitric oxide was not found. The formation of ·OH radicals depended on the type of rare gas used and the yield correlated inversely with ionization energy in the order of krypton > argon = neon > helium. No pyrolysis radicals were detected in aqueous solutions exposed to Ar-CAP. Intracellularly, ·OH, H2O2, which is the recombination product of ·OH, and OCl- were the most likely formed reactive oxygen species after exposure to Ar-CAP. Intracellularly, there was no practical evidence for the formation of NO whereas very small amounts of superoxides were formed. Despite the superiority of Ar-CAP in forming ·OH radicals, the exposure to X-rays proved more lethal. The mechanism of free radical formation in aqueous solutions and an intracellular milieu is discussed.
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Affiliation(s)
| | - Qing-Li Zhao
- Department of Radiological Sciences, Graduate School of Medicine and Pharmaceutical Sciences, University of Toyama, Toyama 930-0194, Japan
| | - Mariame Ali Hassan
- Department of Radiological Sciences, Graduate School of Medicine and Pharmaceutical Sciences, University of Toyama, Toyama 930-0194, Japan
| | - Gabor Andocs
- Tateyama Machine Co., Ltd., Toyama 930-1305, Japan
| | | | - Keigo Takeda
- Plasma Nanotechnology Research Center Nagoya University, Nagoya 464-8601, Japan
| | - Kenji Ishikawa
- Plasma Nanotechnology Research Center Nagoya University, Nagoya 464-8601, Japan
| | - Masaru Hori
- Plasma Nanotechnology Research Center Nagoya University, Nagoya 464-8601, Japan
| | - Takashi Kondo
- Department of Radiological Sciences, Graduate School of Medicine and Pharmaceutical Sciences, University of Toyama, Toyama 930-0194, Japan
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55
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Ethylacetate extract from Tetrastigma hemsleyanum induces apoptosis via the mitochondrial caspase-dependent intrinsic pathway in HepG2 cells. Tumour Biol 2015; 37:865-76. [DOI: 10.1007/s13277-015-3579-8] [Citation(s) in RCA: 32] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2015] [Accepted: 05/15/2015] [Indexed: 01/13/2023] Open
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56
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Khalifeh S, Oryan S, Khodagholi F, Digaleh H, Shaerzadeh F, Maghsoudi N, Zarrindast MR. Complexity of Compensatory Effects in Nrf1 Knockdown: Linking Undeveloped Anxiety-Like Behavior to Prevented Mitochondrial Dysfunction and Oxidative Stress. Cell Mol Neurobiol 2015. [PMID: 26202310 DOI: 10.1007/s10571-015-0236-0] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Abstract
Anxiety-related disorders are complex illnesses that underlying molecular mechanisms need to be understood. Mitochondria stand as an important link between energy metabolism, oxidative stress, and anxiety. The nuclear factor, erythroid-derived 2,-like 1(Nrf1) is a member of the cap "n" collar subfamily of basic region leucine zipper transcription factors and plays the major role in regulating the adaptive response to oxidants and electrophiles within the cell. Here, we injected small interfering RNA (siRNA) targeting Nrf1 in dorsal third ventricle of adult male albino Wistar rats and subsequently examined the effect of this silencing on anxiety-related behavior. We also evaluated apoptotic markers and mitochondrial biogenesis factors, along with electron transport chain activity in three brain regions: hippocampus, amygdala, and prefrontal cortex. Our data revealed that in the group that received Nrf1-siRNA, anxiety-related behavior did not show any significant changes compared to the control group. Caspase-3 did not increase in Nrf1-siRNA-injected rats even though Bax/Bcl2 ratio markedly elevated in Nrf1-knockdown rats in all three mentioned regions compared to control rats. Also, Nrf1 silencing of complex I and II-III did not alter, generally. In addition, Nrf1-knockdown affected mitochondrial biogenesis markers. The level of peroxisome proliferator-activated receptor gamma coactivator-1α and cytochrome-c increased, which indicates a possible role for mitochondrial biogenesis in anxiety.
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Affiliation(s)
- Solmaz Khalifeh
- Department of Animal Physiology, Faculty of Biology, Kharazmi University, P.O. Box: 15614, Tehran, Iran. .,Medical Genomics Research Center and School of Advanced Sciences in Medicine, Tehran Medical Sciences Branch, Islamic Azad University, Tehran, Iran.
| | - Shahrbanoo Oryan
- Department of Animal Physiology, Faculty of Biology, Kharazmi University, P.O. Box: 15614, Tehran, Iran
| | - Fariba Khodagholi
- Neuroscience Research Center, Shahid Beheshti University of Medical Sciences, Tehran, Iran.,NeuroBiology Research Center, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Hadi Digaleh
- Neuroscience Research Center, Shahid Beheshti University of Medical Sciences, Tehran, Iran.,NeuroBiology Research Center, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Fatemeh Shaerzadeh
- Department of Physiology, Faculty of Medicine, Hormozgan University of Medical Sciences, Bandar Abbas, Iran
| | - Nader Maghsoudi
- Neuroscience Research Center, Shahid Beheshti University of Medical Sciences, Tehran, Iran.,NeuroBiology Research Center, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Mohammad-Reza Zarrindast
- Medical Genomics Research Center and School of Advanced Sciences in Medicine, Tehran Medical Sciences Branch, Islamic Azad University, Tehran, Iran.,Department of Pharmacology, School of Medicine, Tehran University of Medical Sciences, Tehran, Iran.,Institute for Cognitive Science Studies (ICSS), Tehran, Iran.,School of Cognitive Sciences, Institute for Research in Fundamental Sciences (IPM), Tehran, Iran
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57
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Kim W, Youn H, Kang C, Youn B. Inflammation-induced radioresistance is mediated by ROS-dependent inactivation of protein phosphatase 1 in non-small cell lung cancer cells. Apoptosis 2015; 20:1242-52. [DOI: 10.1007/s10495-015-1141-1] [Citation(s) in RCA: 42] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
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58
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Tyrosol prevents ischemia/reperfusion-induced cardiac injury in H9c2 cells: involvement of ROS, Hsp70, JNK and ERK, and apoptosis. Molecules 2015; 20:3758-75. [PMID: 25723850 PMCID: PMC6272375 DOI: 10.3390/molecules20033758] [Citation(s) in RCA: 46] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2014] [Revised: 01/15/2015] [Accepted: 02/04/2015] [Indexed: 12/20/2022] Open
Abstract
Ischemia-Reperfusion (I/R) injury causes ROS overproduction, creating oxidative stress, and can trigger myocyte death, resulting in heart failure. Tyrosol is an antioxidant abounded in diets and medicine. Our objective was to investigate the protective effect of tyrosol on I/R-caused mortality in H9c2 cardiomyocytes through its influence on ROS, Hsp70, ERK, JNK, Bcl-2, Bax and caspase-8. A simulated I/R model was used, myocytes loss was examined by MTT, and ROS levels were measured using DCFH-DA. Nuclear condensation and caspase-3 activity were assessed by DAPI staining and fluorometric assay. Phosphorylated ERK and JNK were determined by electrochemiluminescent ELISA, and Hsp70, Bcl-2, Bax and caspase-8 were examined by Western blotting. Results show that tyrosol salvaged myocyte loss, inhibited nuclear condensation and caspase-3 activity dose-dependently, indicating its protection against I/R-caused myocyte loss. Furthermore, tyrosol significantly inhibited ROS accumulation and activation of ERK and JNK, augmenting Hsp70 expression. Besides, tyrosol inhibited I/R-induced apoptosis, associated with retained anti-apoptotic Bcl-2 protein, and attenuated pro-apoptotic Bax protein, resulting in a preservation of Bcl-2/Bax ratio. Finally, tyrosol notably decreased cleaved caspase-8 levels. In conclusion, cytoprotection of tyrosol in I/R-caused myocyte mortality was involved with the mitigation of ROS, prohibition of the activation of ERK, JNK and caspase-8, and elevation of Hsp70 and Bcl-2/Bax ratio.
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59
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Qin QP, Liu YC, Wang HL, Qin JL, Cheng FJ, Tang SF, Liang H. Synthesis and antitumor mechanisms of a copper(ii) complex of anthracene-9-imidazoline hydrazone (9-AIH). Metallomics 2015; 7:1124-36. [DOI: 10.1039/c5mt00027k] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Abstract
A copper(ii) complex of anthracene-9-imidazoline hydrazone induced cell apoptosis by suppressing mutant p53 expression and activating caspase cascade pathway.
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Affiliation(s)
- Qi-Pin Qin
- State Key Laboratory Cultivation Base for the Chemistry and Molecular Engineering of Medicinal Resources
- School of Chemistry and Pharmaceutical Sciences
- Guangxi Normal University
- Guilin 541004, P. R. China
| | - Yan-Cheng Liu
- State Key Laboratory Cultivation Base for the Chemistry and Molecular Engineering of Medicinal Resources
- School of Chemistry and Pharmaceutical Sciences
- Guangxi Normal University
- Guilin 541004, P. R. China
| | - Hai-Lu Wang
- State Key Laboratory Cultivation Base for the Chemistry and Molecular Engineering of Medicinal Resources
- School of Chemistry and Pharmaceutical Sciences
- Guangxi Normal University
- Guilin 541004, P. R. China
| | - Jiao-Lan Qin
- State Key Laboratory Cultivation Base for the Chemistry and Molecular Engineering of Medicinal Resources
- School of Chemistry and Pharmaceutical Sciences
- Guangxi Normal University
- Guilin 541004, P. R. China
| | - Feng-Jie Cheng
- State Key Laboratory Cultivation Base for the Chemistry and Molecular Engineering of Medicinal Resources
- School of Chemistry and Pharmaceutical Sciences
- Guangxi Normal University
- Guilin 541004, P. R. China
| | - Shang-Feng Tang
- State Key Laboratory Cultivation Base for the Chemistry and Molecular Engineering of Medicinal Resources
- School of Chemistry and Pharmaceutical Sciences
- Guangxi Normal University
- Guilin 541004, P. R. China
| | - Hong Liang
- State Key Laboratory Cultivation Base for the Chemistry and Molecular Engineering of Medicinal Resources
- School of Chemistry and Pharmaceutical Sciences
- Guangxi Normal University
- Guilin 541004, P. R. China
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60
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Zhao MX, Zeng EZ, Li Y, Wang CJ. A study on effects of naphthalimide derivative-capped quantum dots on the cellular internalization, proliferation, and apoptosis ability. J Mater Chem B 2014; 2:7351-7359. [PMID: 32261959 DOI: 10.1039/c4tb01048e] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
Quantum dots (QDs) have shown great potential in monitoring and imaging cancer cells because of their unique photochemical and photophysical properties. However, it is little-known whether QDs affect the cellular internalization, proliferation and apoptosis. Here a new class of multifunctional QDs capped with ligands that possess l-Lys or l-Arg and naphthalimide (NI), linked by carboxyl groups (l-Lys-NI@QDs and l-Arg-NI@QDs, respectively), have been synthesized. We found that these QDs are of controllable sizes, in the range of 4 to 5 nm and have strong optical emission properties. The cellular uptake of NI derivative-capped QDs was monitored by flow cytometry and confocal microscopy. The results of in vitro cytotoxicity revealed that NI derivative-capped QDs, with better cell selectivity, could inhibit the growth of multiple cancer cells more potently than amonafide. They effectively inhibited the proliferation of cells due to apoptosis, which was confirmed by Hoechst 33342, annexin V-FITC and JC-1 staining and mitochondrial membrane potential (MMP) experiments. The most potent NI derivative-capped QDs, l-Arg-NI@CdSe/ZnS, were verified to efficiently induce apoptosis via a reactive oxygen species (ROS) mediating mitochondrial dysfunction, and were more effective in promoting programmed cell death in HepG2 cells in a preliminary mechanistic study.
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Affiliation(s)
- Mei-Xia Zhao
- Key Laboratory of Natural Medicine and Immune Engineering, Henan University, Kaifeng 475004, China.
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61
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Li Y, Wu Y, Guan Y, Wang Z, Zhang L. Hydroxysafflor yellow A induces apoptosis in MCF-7 cells by blocking NFκB/p65 pathway and disrupting mitochondrial transmembrane potential. RSC Adv 2014. [DOI: 10.1039/c4ra07417c] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
The molecular mechanisms and the possible effects of hydroxysafflor yellow A (HSYA) on the induction of apoptosis in the human breast cancer MCF-7 cells were investigated.
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Affiliation(s)
- YuYing Li
- Key Laboratory for Chemical Biology and Molecular Engineering of Ministry of Education
- Shanxi University
- Taiyuan, China
| | - Yanzi Wu
- Key Laboratory for Chemical Biology and Molecular Engineering of Ministry of Education
- Shanxi University
- Taiyuan, China
| | - Yingying Guan
- Key Laboratory for Chemical Biology and Molecular Engineering of Ministry of Education
- Shanxi University
- Taiyuan, China
| | - ZhuanHua Wang
- Key Laboratory for Chemical Biology and Molecular Engineering of Ministry of Education
- Shanxi University
- Taiyuan, China
| | - Liwei Zhang
- Key Laboratory for Chemical Biology and Molecular Engineering of Ministry of Education
- Shanxi University
- Taiyuan, China
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