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Xia Y, Zou C, Kang W, Xu T, Shao R, Zeng P, Sun B, Chen J, Qi Y, Wang Z, Lin T, Zhu H, Shen Y, Wang X, Guo S, Cui D. Invasive metastatic tumor-camouflaged ROS responsive nanosystem for targeting therapeutic brain injury after cardiac arrest. Biomaterials 2024; 311:122678. [PMID: 38917705 DOI: 10.1016/j.biomaterials.2024.122678] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2023] [Revised: 05/28/2024] [Accepted: 06/22/2024] [Indexed: 06/27/2024]
Abstract
Drug transmission through the blood-brain barrier (BBB) is considered an arduous challenge for brain injury treatment following the return of spontaneous circulation after cardiac arrest (CA-ROSC). Inspired by the propensity of melanoma metastasis to the brain, B16F10 cell membranes are camouflaged on 2-methoxyestradiol (2ME2)-loaded reactive oxygen species (ROS)-triggered "Padlock" nanoparticles that are constructed by phenylboronic acid pinacol esters conjugated D-a-tocopheryl polyethylene glycol succinate (TPGS-PBAP). The biomimetic nanoparticles (BM@TP/2ME2) can be internalized, mainly mediated by the mutual recognition and interaction between CD44v6 expressed on B16F10 cell membranes and hyaluronic acid on cerebral vascular endothelial cells, and they responsively release 2ME2 by the oxidative stress microenvironment. Notably, BM@TP/2ME2 can scavenge excessive ROS to reestablish redox balance, reverse neuroinflammation, and restore autophagic flux in damaged neurons, eventually exerting a remarkable neuroprotective effect after CA-ROSC in vitro and in vivo. This biomimetic drug delivery system is a novel and promising strategy for the treatment of cerebral ischemia-reperfusion injury after CA-ROSC.
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Affiliation(s)
- Yiyang Xia
- Department of Anesthesiology, Shanghai Sixth People's Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai, 200233, PR China
| | - Chenming Zou
- School of Pharmacy, Shanghai Jiao Tong University, Shanghai, 200240, PR China
| | - Weichao Kang
- Department of Anesthesiology, Shanghai Sixth People's Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai, 200233, PR China
| | - Tianhua Xu
- Department of Anesthesiology, Shanghai Sixth People's Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai, 200233, PR China
| | - Rongjiao Shao
- Department of Critical Care Medicine, Shanghai Chest Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, 200030, PR China
| | - Ping Zeng
- School of Pharmacy, Shanghai Jiao Tong University, Shanghai, 200240, PR China
| | - Bixi Sun
- School of Pharmacy, Shanghai Jiao Tong University, Shanghai, 200240, PR China
| | - Jie Chen
- Department of Anesthesiology, Shanghai Sixth People's Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai, 200233, PR China
| | - Yiming Qi
- School of Pharmacy, Shanghai Jiao Tong University, Shanghai, 200240, PR China
| | - Zhaozhong Wang
- School of Pharmacy, Shanghai Jiao Tong University, Shanghai, 200240, PR China
| | - Tiancheng Lin
- Department of Anesthesiology, Shanghai Sixth People's Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai, 200233, PR China
| | - Haichao Zhu
- School of Pharmacy, Shanghai Jiao Tong University, Shanghai, 200240, PR China
| | - Yuanyuan Shen
- School of Pharmacy, Shanghai Jiao Tong University, Shanghai, 200240, PR China
| | - Xintao Wang
- Department of Anesthesiology, Shanghai Sixth People's Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai, 200233, PR China.
| | - Shengrong Guo
- School of Pharmacy, Shanghai Jiao Tong University, Shanghai, 200240, PR China.
| | - Derong Cui
- Department of Anesthesiology, Shanghai Sixth People's Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai, 200233, PR China.
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Campelo MDS, Aragão CB, Teixeira IMM, de Siqueira EA, da Silva-Filho CJA, Ricardo NMPS, Soares SDA, de Oliveira CLCG, Muniz CR, Barbosa FG, Mafezoli J, Sampaio TL, Ribeiro MENP. Pentacyclic triterpene-loaded emulsion stabilized by Agaricus blazei Murill polysaccharides: Factorial design and cytoprotection study. Int J Biol Macromol 2023; 234:123731. [PMID: 36801286 DOI: 10.1016/j.ijbiomac.2023.123731] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2022] [Revised: 02/11/2023] [Accepted: 02/13/2023] [Indexed: 02/18/2023]
Abstract
In this study, pentacyclic triterpene-loaded emulsions were stabilized by polysaccharides from Agaricus blazei Murill mushroom (PAb). The drug-excipient compatibility results by Fourier Transform Infrared Spectroscopy (FTIR) and Differential Scanning Calorimetry (DSC) showed the absence of physicochemical incompatibilities. The use of these biopolymers at 0.75 % led to obtaining emulsions with droplets smaller than 300 nm, moderate polydispersity, and ζ-potential >30 mV in modulus. The emulsions presented high encapsulation efficiency, suitable pH for topical application, and absence of macroscopic signs of instability during 45 days. Morphological analysis suggested the deposition of thin layers of PAb around the droplets. The encapsulation of pentacyclic triterpene in emulsions, stabilized by PAb, improved the cytocompatibility of this drug against PC12 and murine astrocyte cells. There was a reduction in cytotoxicity, which resulted in a lower accumulation of intracellular reactive oxygen species and maintenance of the mitochondrial transmembrane potential. Based on these results, it is estimated that PAb are promising biopolymers for the emulsions' stabilization by improving their physicochemical and biological properties.
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Affiliation(s)
- Matheus da Silva Campelo
- Organic and Inorganic Chemistry Department, Science Center, Federal University of Ceará, Fortaleza, CE 60440-900, Brazil; Department of Pharmacy, Faculty of Pharmacy, Dentistry and Nursing, Federal University of Ceará, Fortaleza, CE 60430-370, Brazil
| | - Cecília Brilhante Aragão
- Organic and Inorganic Chemistry Department, Science Center, Federal University of Ceará, Fortaleza, CE 60440-900, Brazil
| | - Izabell Maria Martins Teixeira
- Department of Clinical and Toxicological Analysis, Faculty of Pharmacy, Dentistry and Nursing, Federal University of Ceará, Fortaleza, CE 60430-160, Brazil
| | - Erlânia Alves de Siqueira
- Department of Clinical and Toxicological Analysis, Faculty of Pharmacy, Dentistry and Nursing, Federal University of Ceará, Fortaleza, CE 60430-160, Brazil
| | | | | | - Sandra de Aguiar Soares
- Organic and Inorganic Chemistry Department, Science Center, Federal University of Ceará, Fortaleza, CE 60440-900, Brazil
| | | | | | - Francisco Geraldo Barbosa
- Organic and Inorganic Chemistry Department, Science Center, Federal University of Ceará, Fortaleza, CE 60440-900, Brazil
| | - Jair Mafezoli
- Organic and Inorganic Chemistry Department, Science Center, Federal University of Ceará, Fortaleza, CE 60440-900, Brazil
| | - Tiago Lima Sampaio
- Department of Clinical and Toxicological Analysis, Faculty of Pharmacy, Dentistry and Nursing, Federal University of Ceará, Fortaleza, CE 60430-160, Brazil.
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Li H, Ding Y, Huang J, Zhao Y, Chen W, Tang Q, An Y, Chen R, Hu C. Angiopep-2 Modified Exosomes Load Rifampicin with Potential for Treating Central Nervous System Tuberculosis. Int J Nanomedicine 2023; 18:489-503. [PMID: 36733407 PMCID: PMC9888470 DOI: 10.2147/ijn.s395246] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2022] [Accepted: 01/18/2023] [Indexed: 01/28/2023] Open
Abstract
Background Central nervous system tuberculosis (CNS-TB) is the most devastating form of extrapulmonary tuberculosis. Rifampin (RIF) is a first-line antimicrobial agent with potent bactericidal action. Nonetheless, the blood-brain barrier (BBB) limits the therapeutic effects on CNS-TB. Exosomes, however, can facilitate drug movements across the BBB. In addition, exosomes show high biocompatibility and drug-loading capacity. They can also be modified to increase drug delivery efficacy. In this study, we loaded RIF into exosomes and modified the exosomes with a brain-targeting peptide to improve BBB permeability of RIF; we named these exosomes ANG-Exo-RIF. Methods Exosomes were isolated from the culture medium of BMSCs by differential ultracentrifugation and loaded RIF by electroporation and modified ANG by chemical reaction. To characterize ANG-Exo-RIF, Western blot (WB), nanoparticle tracking analysis (NTA) and transmission electron microscopy (TEM) were performed. Bend.3 cells were incubated with DiI labeled ANG-Exo-RIF and then fluorescent microscopy and flow cytometry were used to evaluate the targeting ability of ANG-Exo-RIF in vitro. Fluorescence imaging and frozen section were used to evaluate the targeting ability of ANG-Exo-RIF in vivo. MIC and MBC were determined through microplate alamar blue assay (MABA). Results A novel exosome-based nanoparticle was developed. Compared with untargeted exosomes, the targeted exosomes exhibited high targeting capacity and permeability in vitro and in vivo. The MIC and MBC of ANG-Exo-RIF were 0.25 μg/mL, which were sufficient to meet the clinical needs. Conclusion In summary, excellent targeting ability, high antitubercular activity and biocompatibility endow ANG-Exo-RIF with potential for use in future translation-aimed research and provide hope for an effective CNS-TB treatment.
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Affiliation(s)
- Han Li
- Department of Tuberculosis, The Second Hospital of Nanjing, Nanjing University of Chinese Medicine, Nanjing, People’s Republic of China
| | - Yinan Ding
- Medical School of Southeast University, Nanjing, People’s Republic of China
| | - Jiayan Huang
- Department of Tuberculosis, The Second Hospital of Nanjing, Nanjing University of Chinese Medicine, Nanjing, People’s Republic of China
| | - Yanyan Zhao
- Department of Tuberculosis, The Second Hospital of Nanjing, Nanjing University of Chinese Medicine, Nanjing, People’s Republic of China
| | - Wei Chen
- Department of Clinical Research Center, The Second Hospital of Nanjing, Nanjing University of Chinese Medicine, Nanjing, People’s Republic of China
| | - Qiusha Tang
- Medical School of Southeast University, Nanjing, People’s Republic of China
| | - Yanli An
- Jiangsu Key Laboratory of Molecular and Functional Imaging, Department of Radiology, Zhongda Hospital, Medical School of Southeast University, Nanjing, People’s Republic of China
| | - Rong Chen
- Department of Oncology, Zhongda Hospital, Southeast University, Nanjing, Jiangsu, People’s Republic of China
| | - Chunmei Hu
- Department of Tuberculosis, The Second Hospital of Nanjing, Nanjing University of Chinese Medicine, Nanjing, People’s Republic of China,Correspondence: Chunmei Hu, Department of tuberculosis, the Second Hospital of Nanjing, Nanjing University of Chinese Medicine, Nanjing, 210009, People’s Republic of China, Email
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Dual targeting micelles loaded with paclitaxel and lapatinib for combinational therapy of brain metastases from breast cancer. Sci Rep 2022; 12:2610. [PMID: 35173243 PMCID: PMC8850478 DOI: 10.1038/s41598-022-06677-8] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2021] [Accepted: 02/01/2022] [Indexed: 11/11/2022] Open
Abstract
Due to the presence of the blood–brain barrier (BBB), the delivery of general drugs into the brain tissue remains to be a tricky problem. For patients with brain metastases from breast cancer, drug delivery systems must overcome this physical barrier. Targeted nano vehicles arise as a promising alternative to deliver drugs to brain tissues successively. Herein, a dual targeting micelle drug delivery system loaded with paclitaxel (PTX) and lapatinib (LPTN) was developed for combinational therapy of brain metastases. In our study, it was shown the micelles modified with Angiopep-2 had high loading efficiency of paclitaxel and lapatinib (Ang-MIC-PTX/LP). In addition, Ang-MIC-PTX/LP could transport across the in vitro BBB model and accumulate in breast cancer cells. After intravenous injection, Ang-MIC significantly accumulated in the brain metastasis. Ang-MIC-PTX/LP could also extend the life span of brain metastasis mouse models. Overall, this study provided a promising method for treatment of brain metastases from breast cancer.
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Habib S, Singh M. Angiopep-2-Modified Nanoparticles for Brain-Directed Delivery of Therapeutics: A Review. Polymers (Basel) 2022; 14:polym14040712. [PMID: 35215625 PMCID: PMC8878382 DOI: 10.3390/polym14040712] [Citation(s) in RCA: 28] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2022] [Revised: 02/06/2022] [Accepted: 02/08/2022] [Indexed: 12/14/2022] Open
Abstract
Nanotechnology has opened up a world of possibilities for the treatment of brain disorders. Nanosystems can be designed to encapsulate, carry, and deliver a variety of therapeutic agents, including drugs and nucleic acids. Nanoparticles may also be formulated to contain photosensitizers or, on their own, serve as photothermal conversion agents for phototherapy. Furthermore, nano-delivery agents can enhance the efficacy of contrast agents for improved brain imaging and diagnostics. However, effective nano-delivery to the brain is seriously hampered by the formidable blood–brain barrier (BBB). Advances in understanding natural transport routes across the BBB have led to receptor-mediated transcytosis being exploited as a possible means of nanoparticle uptake. In this regard, the oligopeptide Angiopep-2, which has high BBB transcytosis capacity, has been utilized as a targeting ligand. Various organic and inorganic nanostructures have been functionalized with Angiopep-2 to direct therapeutic and diagnostic agents to the brain. Not only have these shown great promise in the treatment and diagnosis of brain cancer but they have also been investigated for the treatment of brain injury, stroke, epilepsy, Parkinson’s disease, and Alzheimer’s disease. This review focuses on studies conducted from 2010 to 2021 with Angiopep-2-modified nanoparticles aimed at the treatment and diagnosis of brain disorders.
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Al-Amili M, Jin Z, Wang Z, Guo S. Self-Assembled Micelles of Amphiphilic PEGylated Drugs for Cancer Treatment. Curr Drug Targets 2021; 22:870-881. [PMID: 33390113 DOI: 10.2174/1389450122666201231130702] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2020] [Revised: 10/18/2020] [Accepted: 11/11/2020] [Indexed: 11/22/2022]
Abstract
Generally, poor solubility and imprecise delivery of chemotherapeutic drugs can compromise their efficacies for clinical cancer treatment. In order to address such concerns, poor water-soluble drugs are conjugated with poly(ethylene glycol) (PEG) to obtain PEGylated drugs, which have improved water solubility and can also self-assemble in an aqueous solution to form micelles (PEGylated drug micelles). The surface PEG layer enhances the micelles' colloidal stability and reduces the interaction with physiological surroundings. Meanwhile, PEGylated drug micelles are tumor- targeting via the enhanced permeation and retention (EPR) effect to improve antitumor efficacy in comparison with free drugs. PEGylated drug micelles employ drugs as parts of the carrier medium, which increases the micelles' drug loading capacity relatively. The development of stimuli- responsive PEGylated drug micelles facilitates the drug release to be smart and controllable. Moreover, the PEGylated drug micelles show great potentials in overcoming the challenges of cancer therapy, such as multidrug resistance (MDR), angiogenesis, immunosuppression, and so on. In this review, we highlight the research progresses of PEGylated drug micelles, including the structures and properties, smart stimuli-responsive PEGylated drug micelles, and the challenges that have been overcome by PEGylated drug micelles.
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Affiliation(s)
- Majdi Al-Amili
- School of Pharmacy, Shanghai Jiao Tong University, 800 Dongchuan Road, Shanghai 200240, China
| | - Zhu Jin
- School of Pharmacy, Shanghai Jiao Tong University, 800 Dongchuan Road, Shanghai 200240, China
| | - Zhongmin Wang
- Department of Interventional Radiology, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai 200025, China
| | - Shengrong Guo
- School of Pharmacy, Shanghai Jiao Tong University, 800 Dongchuan Road, Shanghai 200240, China
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Optimisation of a PC12 cell-based in vitro stroke model for screening neuroprotective agents. Sci Rep 2021; 11:8096. [PMID: 33854099 PMCID: PMC8046774 DOI: 10.1038/s41598-021-87431-4] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2020] [Accepted: 03/26/2021] [Indexed: 02/03/2023] Open
Abstract
Stroke causes death and disability globally but no neuroprotectant is approved for post-stroke neuronal injury. Neuroprotective compounds can be identified using oxygen glucose deprivation (OGD) of neuronal cells as an in vitro stroke model. Nerve growth factor (NGF)-differentiated PC12 pheochromocytoma cells are frequently used. However, investigators often find their clonal variant undifferentiable and are uncertain of optimal culture conditions. Hence we studied 3 commonly used PC12 variants: PC12 Adh, PC12 from Riken Cell Bank (PC12 Riken) and Neuroscreen-1 (NS-1) cells. We found DMEM the optimal media for PC12 Riken and NS-1 cells. Using a novel serum-free media approach, we identified collagen IV as the preferred adhesive substrate for both cell lines. We found PC12 Adh cells cannot attach without serum and is unable to differentiate using NGF. NS-1 cells differentiated to a maximal 72.7 ± 5.2% %, with substantial basal differentiation. We optimised differentiated NS-1 cells for an in vitro stroke model using 3 h of OGD resulting in ~ 70% viable cells. We screened 5 reported neuroprotectants and provide the first report that serotonin is antiapoptotic in a stroke model and the 5-HT1A agonist 8-hydroxy-2-(di-n-propylamino) tetralin (8-OH-DPAT) is neuroprotective in PC12 cells. Thus we demonstrate the optimisation and validation for a PC12 cell-based in vitro stroke model.
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He C, Zhang Z, Ding Y, Xue K, Wang X, Yang R, An Y, Liu D, Hu C, Tang Q. LRP1-mediated pH-sensitive polymersomes facilitate combination therapy of glioblastoma in vitro and in vivo. J Nanobiotechnology 2021; 19:29. [PMID: 33482822 PMCID: PMC7821499 DOI: 10.1186/s12951-020-00751-x] [Citation(s) in RCA: 30] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/24/2020] [Accepted: 12/08/2020] [Indexed: 02/06/2023] Open
Abstract
BACKGROUND Glioblastoma (GBM) is the most invasive primary intracranial tumor, and its effective treatment is one of the most daunting challenges in oncology. The blood-brain barrier (BBB) is the main obstacle that prevents the delivery of potentially active therapeutic compounds. In this study, a new type of pH-sensitive polymersomes has been designed for glioblastoma therapy to achieve a combination of radiotherapy and chemotherapy for U87-MG human glioblastoma xenografts in nude mice and significantly increased survival time. RESULTS The Au-DOX@PO-ANG has a good ability to cross the blood-brain barrier and target tumors. This delivery system has pH-sensitivity and the ability to respond to the tumor microenvironment. Gold nanoparticles and doxorubicin are designed as a complex drug. This type of complex drug improve the radiotherapy (RT) effect of glioblastoma. The mice treated with Au-DOX@PO-ANG NPs have a significant reduction in tumor volume. CONCLUSION In summary, a new pH-sensitive drug delivery system was fabricated for the treatment of glioblastoma. The new BBB-traversing drug delivery system potentially represents a novel approach to improve the effects of the treatment of intracranial tumors and provides hope for glioblastoma treatment.
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Affiliation(s)
- Chen He
- Medical School of Southeast University, 87 Dingjiaqiao Road, Nanjing, China
| | - Zhiyuan Zhang
- Department of Neurosurgery, Nanjing Jinling Hospital, Nanjing University, Nanjing, China
| | - Yinan Ding
- Medical School of Southeast University, 87 Dingjiaqiao Road, Nanjing, China
| | - Kangli Xue
- Medical School of Southeast University, 87 Dingjiaqiao Road, Nanjing, China
| | - Xihui Wang
- Medical School of Southeast University, 87 Dingjiaqiao Road, Nanjing, China
| | - Rui Yang
- Research Institute for Reproductive Health and Genetic Diseases, The Affiliated Wuxi Maternity and Child Health Care Hospital of Nanjing Medical University, Wuxi, China
| | - Yanli An
- Medical School of Southeast University, 87 Dingjiaqiao Road, Nanjing, China
| | - Dongfang Liu
- Medical School of Southeast University, 87 Dingjiaqiao Road, Nanjing, China
| | - Chunmei Hu
- Department of Tuberculosis, the Second Affiliated Hospital of Southeast University, Nanjing, China.
| | - Qiusha Tang
- Medical School of Southeast University, 87 Dingjiaqiao Road, Nanjing, China.
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Wei L, Fan Y, Wei L, He X, Yang J, Zheng X. Ablation of TMEM126B protects against oxygen-glucose deprivation/reoxygenation-induced injuries of PC12 cells via maintaining mitochondrial anti-apoptotic functions. Arch Biochem Biophys 2020; 696:108634. [PMID: 33075301 DOI: 10.1016/j.abb.2020.108634] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2020] [Revised: 09/30/2020] [Accepted: 10/14/2020] [Indexed: 12/11/2022]
Abstract
Ischemia reperfusion (I/R) injury is a key contributing factor to the pathogenic mechanism involved in cerebral infarction. Transmembrane protein 126b (TMEM126B), a mitochondrial complex I assembly factor, has been reported to have an intimate association with disease progression, but is little known in ischemia stroke. The present study was designed to explore the effects of TEME126B on oxygen-glucose deprivation/reoxygenation (OGD/R)-induced neuronal PC12 cells. The mRNA level of TMEM126B was determined using qRT-PCR. The levels of ROS, MDA, and SOD, as well as inflammatory cytokines, were measured using corresponding commercial kits. Cell apoptosis rate was assayed by flow cytometry analysis, and the apoptosis-related proteins were measured using western blotting. ATP production measured by colorimetric reaction and mitochondrial membrane potential measured by JC-1 staining were conducted to determine mitochondrial dysfunction. The results showed that TMEM126B was upregulated upon I/R injury in vitro and in clinical, and was positively corrected with the degree of oxidative stress. TMEM126B knockdown significantly reduced oxidative stress and inflammation in OGD/R-induced PC12 cells. TMEM126B knockdown also attenuated cell apoptosis rate, accompanied with increased expressions of Bcl-2, XIAP and cleaved PARP-1, and decreased expressions of Bax, cleaved caspase 3 and cleaved caspase 9. Furthermore, TMEM126B knockdown exhibited cytoprotective roles through alleviating mitochondrial dysfunction, as assessed by ATP production and mitochondrial membrane potential. Collectively, this study indicates that TMEM126B knockdown protects against OGD/R-induced neuronal injuries through relieving oxidative stress, inflammation, apoptosis and mitochondria dysfunction, which provides a promising target for ischemic stroke treatment.
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Affiliation(s)
- Lihong Wei
- Department of Neurology, Jiaozuo People's Hospital, Jiaozuo, Henan, 454002, China
| | - Yun Fan
- Department of Neurology, Jiaozuo People's Hospital, Jiaozuo, Henan, 454002, China
| | - Lingling Wei
- Department of Neurology, Jiaozuo People's Hospital, Jiaozuo, Henan, 454002, China
| | - Xiaoxia He
- Department of Neurology, Jiaozuo People's Hospital, Jiaozuo, Henan, 454002, China
| | - Jiaqing Yang
- Department of Neurology, Jiaozuo People's Hospital, Jiaozuo, Henan, 454002, China
| | - Xianzhao Zheng
- Department of Neurology, Jiaozuo People's Hospital, Jiaozuo, Henan, 454002, China.
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Bai J, Zeng S, Zhu J, Fu C, He M, Zhu J, Chen S, Fu X, Li P, Lin Z. The Small Molecule P7C3-A20 Exerts Neuroprotective Effects in a Hypoxic–ischemic Encephalopathy Model via Activation of PI3K/AKT/GSK3β Signaling. Neuroscience 2020; 441:197-208. [DOI: 10.1016/j.neuroscience.2020.05.051] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2019] [Revised: 05/26/2020] [Accepted: 05/27/2020] [Indexed: 11/27/2022]
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Zhao Y, Yin H, Zhang X. Modification of graphene oxide by angiopep-2 enhances anti-glioma efficiency of the nanoscaled delivery system for doxorubicin. Aging (Albany NY) 2020; 12:10506-10516. [PMID: 32474457 PMCID: PMC7346081 DOI: 10.18632/aging.103275] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2020] [Accepted: 04/20/2020] [Indexed: 04/14/2023]
Abstract
OBJECTIVE This study aimed to evaluate the efficacy of the improved nanoscaled delivery system for doxorubicin (Dox) based on angiopep (ANG)-2 modified graphene oxide (GO), the so-called ANG-Dox-GO, in suppressing the growth and and metastasis of glioma cells. RESULTS Modification of GO by angiopep-2 significantly increased the cellular uptake of Dox. In addition, ANG-Dox-GO treatment of U87 MG cells significantly inhibited cell viability, decreased clone number, cell migration and invasion andinduced cell apoptosis, with superior efficiency over that of Dox-GO and free Dox. Similar results were observed in in vivo experiments-tumor size and weight of glioma xenograft mice were obviously decreased after treatments with ANG-Dox-GO, Dox-GO and Dox, respectively, as compared with control group, and the efficiency was the highest in ANG-Dox-GO, followed by Dox-Go and Dox. CONCLUSIONS ANG-Dox-GO exhibited superior anti-glioma effects over Dox-GO both in vitro and in vivo experiments. METHODS The morphology of ANG-Dox-GO was analyzed by UV visible absorption spectroscopy and atomic force microscopy and its in vitro cellular uptake was measured using confocal imaging analysis. The antitumor effects of GO, unbound Dox, Dox-GO and ANG-Dox-GO were evaluated by MTT assay, colony-forming assay, cell apoptosis assay and Transwell assay in U87 malignant glioma (MG) cells.
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Affiliation(s)
- Yue Zhao
- Radiotherapy Department, Cangzhou Central Hospital, Cangzhou 061000, China
| | - Hang Yin
- Department of Cardiology, Cangzhou People’s Hospital, Cangzhou 061000, China
| | - Xiaoyu Zhang
- Department of Thyroid and Breast Surgery, Cangzhou Central Hospital, Cangzhou 061000, China
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