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Chen J, Chen K, Xue S, Cheng X, Qi Y, Wang H, Li W, Cheng G, Xiong Y, Mu C, Gu M. Integration of caveolin-mediated cytosolic delivery and enzyme-responsive releasing of squalenoyl nanoparticles enhance the anti-cancer efficacy of chidamide in pancreatic cancer. Int J Pharm 2024; 655:124072. [PMID: 38561133 DOI: 10.1016/j.ijpharm.2024.124072] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2023] [Revised: 02/29/2024] [Accepted: 03/29/2024] [Indexed: 04/04/2024]
Abstract
We explored the potential of overcoming the dense interstitial barrier in pancreatic cancer treatment by enhancing the uptake of hydrophilic chemotherapeutic drugs. In this study, we synthesized the squalenoyl-chidamide prodrug (SQ-CHI), linking lipophilic squalene (SQ) with the hydrophilic antitumor drug chidamide (CHI) through a trypsin-responsive bond. Self-assembled nanoparticles with sigma receptor-bound aminoethyl anisamide (AEAA) modification, forming AEAA-PEG-SQ-CHI NPs (A-C NPs, size 116.6 ± 0.4 nm), and reference nanoparticles without AEAA modification, forming mPEG-SQ-CHI NPs (M-C NPs, size 88.3 ± 0.3 nm), were prepared. A-C NPs exhibited significantly higher in vitro CHI release (74.7 %) in 0.5 % trypsin medium compared to release (20.2 %) in medium without trypsin. In vitro cell uptake assays revealed 3.6 and 2.3times higher permeation of A-C NPs into tumorspheres of PSN-1/HPSC or CFPAC-1/HPSC, respectively, compared to M-C NPs. Following intraperitoneal administration to subcutaneous tumor-bearing nude mice, the A-C NPs group demonstrated significant anti-pancreatic cancer efficacy, inducing cancer cell apoptosis and inhibiting proliferation in vivo. Mechanistic studies revealed that AEAA surface modification on nanoparticles promoted intracellular uptake through caveolin-mediated endocytosis. This nanoparticle system presents a novel therapeutic approach for pancreatic cancer treatment, offering a delivery strategy to enhance efficacy through improved tumor permeation, trypsin-responsive drug release, and specific cell surface receptor-mediated intracellular uptake.
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Affiliation(s)
- Junyan Chen
- School of Pharmaceutical Science, Zhejiang Chinese Medical University, Hangzhou 310053, Zhejiang, China
| | - Kaidi Chen
- School of Pharmaceutical Science, Zhejiang Chinese Medical University, Hangzhou 310053, Zhejiang, China
| | - Shuai Xue
- School of Pharmaceutical Science, Zhejiang Chinese Medical University, Hangzhou 310053, Zhejiang, China
| | - Xiao Cheng
- Huzhou Institute for Food and Drug Control, Huzhou 313000, Zhejiang, China.
| | - Yuwei Qi
- School of Pharmaceutical Science, Zhejiang Chinese Medical University, Hangzhou 310053, Zhejiang, China
| | - Hangjie Wang
- School of Pharmaceutical Science, Zhejiang Chinese Medical University, Hangzhou 310053, Zhejiang, China
| | - Wei Li
- Academy of Chinese Medical Sciences, Zhejiang Chinese Medical University, Hangzhou 310053, Zhejiang, China
| | - Guilin Cheng
- Academy of Chinese Medical Sciences, Zhejiang Chinese Medical University, Hangzhou 310053, Zhejiang, China
| | - Yang Xiong
- School of Pharmaceutical Science, Zhejiang Chinese Medical University, Hangzhou 310053, Zhejiang, China; Academy of Chinese Medical Sciences, Zhejiang Chinese Medical University, Hangzhou 310053, Zhejiang, China
| | - Chaofeng Mu
- School of Pharmaceutical Science, Zhejiang Chinese Medical University, Hangzhou 310053, Zhejiang, China
| | - Mancang Gu
- School of Pharmaceutical Science, Zhejiang Chinese Medical University, Hangzhou 310053, Zhejiang, China; Academy of Chinese Medical Sciences, Zhejiang Chinese Medical University, Hangzhou 310053, Zhejiang, China.
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Chen K, Cheng X, Xue S, Chen J, Zhang X, Qi Y, Chen R, Zhang Y, Wang H, Li W, Cheng G, Huang Y, Xiong Y, Chen L, Mu C, Gu M. Albumin conjugation promotes arsenic trioxide transport through alkaline phosphatase-associated transcytosis in MUC4 wildtype pancreatic cancer cells. Int J Biol Macromol 2024; 257:128756. [PMID: 38092098 DOI: 10.1016/j.ijbiomac.2023.128756] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2023] [Revised: 12/08/2023] [Accepted: 12/09/2023] [Indexed: 12/17/2023]
Abstract
Pancreatic cancer (PC) has a poor prognosis due to chemotherapy resistance and unfavorable drug transportation. Albumin conjugates are commonly used as drug carriers to overcome these obstacles. However, membrane-bound glycoprotein mucin 4 (MUC4) has emerged as a promising biomarker among the genetic mutations affecting albumin conjugates therapeutic window. Human serum albumin-conjugated arsenic trioxide (HSA-ATO) has shown potential in treating solid tumors but is limited in PC therapy due to unclear targets and mechanisms. This study investigated the transport mechanisms and therapeutic efficacy of HSA-ATO in PC cells with different MUC4 mutation statuses. Results revealed improved penetration of ATO into PC tumors through conjugated with HSA. However, MUC4 mutation significantly affected treatment sensitivity and HSA-ATO uptake both in vitro and in vivo. Mutant MUC4 cells exhibited over ten times higher IC50 for HSA-ATO and approximately half the uptake compared to wildtype cells. Further research demonstrated that ALPL activation by HSA-ATO enhanced transcytosis in wildtype MUC4 PC cells but not in mutant MUC4 cells, leading to impaired uptake and weaker antitumor effects. Reprogramming the transport process holds potential for enhancing albumin conjugate efficacy in PC patients with different MUC4 mutation statuses, paving the way for stratified treatment using these delivery vehicles.
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Affiliation(s)
- Kaidi Chen
- School of Pharmaceutical Science, Zhejiang Chinese Medical University, Hangzhou 310053, Zhejiang, PR China
| | - Xiao Cheng
- Huzhou Institute for Food and Drug Control, Huzhou 313000, PR China
| | - Shuai Xue
- School of Pharmaceutical Science, Zhejiang Chinese Medical University, Hangzhou 310053, Zhejiang, PR China
| | - Junyan Chen
- School of Pharmaceutical Science, Zhejiang Chinese Medical University, Hangzhou 310053, Zhejiang, PR China
| | - Xu Zhang
- Zhejiang Heze Pharmaceutical Technology Co., Ltd., Hangzhou 310018, Zhejiang, PR China
| | - Yuwei Qi
- School of Pharmaceutical Science, Zhejiang Chinese Medical University, Hangzhou 310053, Zhejiang, PR China
| | - Rong Chen
- School of Pharmaceutical Science, Zhejiang Chinese Medical University, Hangzhou 310053, Zhejiang, PR China
| | - Yan Zhang
- Department of Pharmacy, Hangzhou Red Cross Hospital, Hangzhou 310003, Zhejiang, PR China
| | - Hangjie Wang
- School of Pharmaceutical Science, Zhejiang Chinese Medical University, Hangzhou 310053, Zhejiang, PR China
| | - Wei Li
- Academy of Chinese Medical Sciences, Zhejiang Chinese Medical University, Hangzhou 310053, Zhejiang, PR China
| | - Guilin Cheng
- Department of Pharmacy, Hangzhou Red Cross Hospital, Hangzhou 310003, Zhejiang, PR China
| | - Ye Huang
- Department of Pharmacy, Zhejiang Provincial Dermatology Hospital, Huzhou 313200, Zhejiang, PR China
| | - Yang Xiong
- School of Pharmaceutical Science, Zhejiang Chinese Medical University, Hangzhou 310053, Zhejiang, PR China; Department of Pharmacy, Hangzhou Red Cross Hospital, Hangzhou 310003, Zhejiang, PR China
| | - Liping Chen
- Wenzhou Institute, University of Chinese Academy of Sciences, Wenzhou 325001, Zhejiang, PR China; School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210023, Jiangsu, PR China.
| | - Chaofeng Mu
- School of Pharmaceutical Science, Zhejiang Chinese Medical University, Hangzhou 310053, Zhejiang, PR China.
| | - Mancang Gu
- School of Pharmaceutical Science, Zhejiang Chinese Medical University, Hangzhou 310053, Zhejiang, PR China; Academy of Chinese Medical Sciences, Zhejiang Chinese Medical University, Hangzhou 310053, Zhejiang, PR China.
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3
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Zhang H, Chen L, Zhao Y, Luo N, Shi J, Xu S, Ma L, Wang M, Gu M, Mu C, Xiong Y. Relaxin-encapsulated polymeric metformin nanoparticles remodel tumor immune microenvironment by reducing CAFs for efficient triple-negative breast cancer immunotherapy. Asian J Pharm Sci 2023; 18:100796. [PMID: 37008735 PMCID: PMC10064789 DOI: 10.1016/j.ajps.2023.100796] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2022] [Revised: 01/14/2023] [Accepted: 02/09/2023] [Indexed: 02/26/2023] Open
Abstract
Cancer-associated fibroblasts (CAFs) are one of the most abundant stromal cells in the tumor microenvironment which mediate desmoplastic response and are the primary driver for an immunosuppressive microenvironment, leading to the failure of triple-negative breast cancer (TNBC) immunotherapy. Therefore, depleting CAFs may enhance the effect of immunotherapy (such as PD-L1 antibody). Relaxin (RLN) has been demonstrated to significantly improve transforming growth factor-β (TGF-β) induced CAFs activation and tumor immunosuppressive microenvironment. However, the short half-life and systemic vasodilation of RLN limit its in vivo efficacy. Here, plasmid encoding relaxin (pRLN) to locally express RLN was delivered with a new positively charged polymer named polymeric metformin (PolyMet), which could increase gene transfer efficiency significantly and have low toxicity that have been certified by our lab before. In order to improve the stability of pRLN in vivo, this complex was further formed lipid poly-γ-glutamic acid (PGA)/PolyMet-pRLN nanoparticle (LPPR). The particle size of LPPR was 205.5 ± 2.9 nm, and the zeta potential was +55.4 ± 1.6 mV. LPPR displayed excellent tumor penetrating efficacy and weaken proliferation of CAFs in 4T1luc/CAFs tumor spheres in vitro. In vivo, it could reverse aberrantly activated CAFs by decreasing the expression of profibrogenic cytokine and remove the physical barrier to reshape the tumor stromal microenvironment, which enabled a 2.2-fold increase in cytotoxic T cell infiltration within the tumor and a decrease in immunosuppressive cells infiltration. Thus, LPPR was observed retarded tumor growth by itself in the 4T1 tumor bearing-mouse, and the reshaped immune microenvironment further led to facilitate antitumor effect when it combined with PD-L1 antibody (aPD-L1). Altogether, this study presented a novel therapeutic approach against tumor stroma using LPPR to achieve a combination regimen with immune checkpoint blockade therapy against the desmoplastic TNBC model.
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Affiliation(s)
- Hongyan Zhang
- School of Pharmaceutical Sciences, Zhejiang Chinese Medical University, Hangzhou 310053, China
- Academy of Chinese Medical Science, Zhejiang Chinese Medical University, Hangzhou 310053, China
| | - Liying Chen
- School of Pharmaceutical Sciences, Zhejiang Chinese Medical University, Hangzhou 310053, China
| | - Yue Zhao
- School of Pharmaceutical Sciences, Zhejiang Chinese Medical University, Hangzhou 310053, China
| | - Ningchao Luo
- School of Pharmaceutical Sciences, Zhejiang Chinese Medical University, Hangzhou 310053, China
| | - Jingbin Shi
- School of Pharmaceutical Sciences, Zhejiang Chinese Medical University, Hangzhou 310053, China
| | - Shujun Xu
- School of Pharmaceutical Sciences, Zhejiang Chinese Medical University, Hangzhou 310053, China
| | - Lisha Ma
- School of Pharmaceutical Sciences, Zhejiang Chinese Medical University, Hangzhou 310053, China
| | - Menglin Wang
- Division of Pharmacoengineering and Molecular Pharmaceutics, Eshelman School of Pharmacy, University of North Carolina at Chapel Hill, NC 27599, United States
| | - Mancang Gu
- School of Pharmaceutical Sciences, Zhejiang Chinese Medical University, Hangzhou 310053, China
| | - Chaofeng Mu
- School of Pharmaceutical Sciences, Zhejiang Chinese Medical University, Hangzhou 310053, China
| | - Yang Xiong
- School of Pharmaceutical Sciences, Zhejiang Chinese Medical University, Hangzhou 310053, China
- Academy of Chinese Medical Science, Zhejiang Chinese Medical University, Hangzhou 310053, China
- Corresponding author at: School of Pharmaceutical Sciences, Zhejiang Chinese Medical University, Hangzhou 310053, China.
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Zhang H, Yu J, Ma L, Zhao Y, Xu S, Shi J, Qian K, Gu M, Tan H, Xu L, Liu Y, Mu C, Xiong Y. Reversing multi-drug resistance by polymeric metformin to enhance antitumor efficacy of chemotherapy. Int J Pharm 2022; 624:121931. [PMID: 35750278 DOI: 10.1016/j.ijpharm.2022.121931] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2022] [Revised: 06/02/2022] [Accepted: 06/13/2022] [Indexed: 01/01/2023]
Abstract
Multi-drug resistance (MDR) in breast cancer poses a great threat to chemotherapy. The expression and function of the ATP binding cassette (ABC) transporter are the major cause of MDR. Herein, a linear polyethylene glycol (PEI) conjugated with dicyandiamide, which called polymeric metformin (PolyMet), was successfully synthesized as a simple and biocompatible polymer of metformin. PolyMet showed the potential to reverse MDR by inhibiting the efflux of the substrate of ATP-binding cassette (ABC) transporter from DOX resistant MCF-7 cells (MCF-7/DOX). To test its MDR reversing effect, PolyMet was combined with DOX to treat mice carrying MCF-7/DOX xenografts. In order to decrease the toxicities of DOX and delivery PolyMet and DOX to tumor at the same time, PolyMet was complexed with poly-γ-glutamic acid-doxorubicin (PGA-DOX) electrostatically at the optimal ratio of 2:3, which were further coated with lipid membrane to form lipid/PolyMet-(PGA-DOX) nanoparticles (LPPD). The particle size of LPPD was 165.8 nm, and the zeta potential was +36.5 mV. LPPD exhibited favorable cytotoxicity and cellular uptake in MCF-7/DOX. Meanwhile, the bioluminescence imaging and immunohistochemical analysis indicated that LPPD effectively conquered DOX-associated MDR by blocking ABC transporters (ABCB1 and ABCC1) via PolyMet. Remarkably, LPPD significantly inhibited the tumor growth and lowered the systemic toxicity in a murine MCF-7/DOX tumor model. This is the first time to reveal that PolyMet can enhance the anti-tumor efficacy of DOX by dampening ABC transporters and activating the AMPK/mTOR pathway, which is a promising strategy for drug-resistant breast cancer therapy.
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Affiliation(s)
- Hongyan Zhang
- School of Pharmaceutical Sciences, Zhejiang Chinese Medical University, Hangzhou, Zhejiang 310053, China; Academy of Chinese Medical Science, Zhejiang Chinese Medical University, Hangzhou, Zhejiang 310053, China
| | - Jiandong Yu
- School of Pharmaceutical Sciences, Zhejiang Chinese Medical University, Hangzhou, Zhejiang 310053, China
| | - Lisha Ma
- School of Pharmaceutical Sciences, Zhejiang Chinese Medical University, Hangzhou, Zhejiang 310053, China
| | - Yue Zhao
- School of Pharmaceutical Sciences, Zhejiang Chinese Medical University, Hangzhou, Zhejiang 310053, China
| | - Shujun Xu
- School of Pharmaceutical Sciences, Zhejiang Chinese Medical University, Hangzhou, Zhejiang 310053, China
| | - Jingbin Shi
- School of Pharmaceutical Sciences, Zhejiang Chinese Medical University, Hangzhou, Zhejiang 310053, China
| | - Ke Qian
- School of Pharmaceutical Sciences, Zhejiang Chinese Medical University, Hangzhou, Zhejiang 310053, China
| | - Mancang Gu
- School of Pharmaceutical Sciences, Zhejiang Chinese Medical University, Hangzhou, Zhejiang 310053, China; Academy of Chinese Medical Science, Zhejiang Chinese Medical University, Hangzhou, Zhejiang 310053, China
| | - Hongsheng Tan
- Clinical Research Center, Shanghai Jiao Tong University School of Medicine, Shanghai 200030, China
| | - Li Xu
- Zhejiang Provincial Hospital of TCM (Traditional Chinese Medicine), The First Affiliated Hospital of Zhejiang Chinese Medical University, Hangzhou, Zhejiang 310006, China
| | - Yun Liu
- UNC Eshelman School of Pharmacy, the University of North Carolina at Chapel Hill, Chapel Hill, NC 27559, USA
| | - Chaofeng Mu
- School of Pharmaceutical Sciences, Zhejiang Chinese Medical University, Hangzhou, Zhejiang 310053, China.
| | - Yang Xiong
- School of Pharmaceutical Sciences, Zhejiang Chinese Medical University, Hangzhou, Zhejiang 310053, China; Academy of Chinese Medical Science, Zhejiang Chinese Medical University, Hangzhou, Zhejiang 310053, China.
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Zhang J, Gao X, Zheng X, Yang Y, Fan G, Shi Y, Wang J, Mu C. A high stem to leaf ratio reduced rainfall use efficiency under altered rainfall patterns in a semi-arid grassland in northeast China. Plant Biol (Stuttg) 2021; 23:760-769. [PMID: 33915008 DOI: 10.1111/plb.13278] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/01/2021] [Accepted: 04/21/2021] [Indexed: 06/12/2023]
Abstract
Rainfall use efficiency (RUE) is crucial for understanding the changes in grassland productivity due to variations in future rainfall patterns. Recently, numerous studies have been conducted on the relationship between RUE and the amount of rainfall, but there has been little research on the influence of rainfall distribution and the interactive effect of rainfall amounts and distribution on RUE. Here, a simulated rainfall experiment was conducted to evaluate the impacts of rainfall amount (average rainfall amount (R0), 334 mm; decreased (R-) and increased (R+) rainfall amounts, 233 mm and 434 mm, respectively) and dry intervals (comprising 6-day, 9-day, 12-day, 15-day, 18-day and 21-day intervals between rainfall) on productivity and RUE in Leymus chinensis (Trin.) Tzvel., a dominant grass of the Eastern Eurasian Steppe. Our results showed that (1) for biomass production and RUE, moderate extension of dry intervals was conducive to enhancing total biomass production and RUE. The peak values of total biomass and RUE appeared during the 15-day interval for R-, and the 18-day interval for R0 and R+. (2) For biomass allocation, extension of dry intervals decreased the stem to leaf ratio (S/L) and the root to shoot ratio (R/S). (3) Further, the S/L ratio was significantly negatively correlated with RUE. These results suggest that variations in rainfall patterns can alter the RUE by changing the S/L ratio, and finally influence biomass production in L. chinensis. These findings have important implications for understanding and predicting the effect of future climate change on productivity in semi-arid grassland.
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Affiliation(s)
- J Zhang
- Institute of Grassland Science, Key Laboratory of Vegetation Ecology, Ministry of Education, Jilin Songnen Grassland Ecosystem National Observation and Research Station, Northeast Normal University, Changchun, 130024, China
| | - X Gao
- Meteorological Observatory of Jilin Province, Changchun Jilin Province, 130062, China
| | - X Zheng
- Institute of Grassland Science, Key Laboratory of Vegetation Ecology, Ministry of Education, Jilin Songnen Grassland Ecosystem National Observation and Research Station, Northeast Normal University, Changchun, 130024, China
| | - Y Yang
- Institute of Grassland Science, Key Laboratory of Vegetation Ecology, Ministry of Education, Jilin Songnen Grassland Ecosystem National Observation and Research Station, Northeast Normal University, Changchun, 130024, China
| | - G Fan
- Key Laboratory of Photobiology, Institute of botany, Chinese Academy of Sciences, Beijing, 100093, China
| | - Y Shi
- Institute of Grassland Science, Key Laboratory of Vegetation Ecology, Ministry of Education, Jilin Songnen Grassland Ecosystem National Observation and Research Station, Northeast Normal University, Changchun, 130024, China
| | - J Wang
- Institute of Grassland Science, Key Laboratory of Vegetation Ecology, Ministry of Education, Jilin Songnen Grassland Ecosystem National Observation and Research Station, Northeast Normal University, Changchun, 130024, China
| | - C Mu
- Institute of Grassland Science, Key Laboratory of Vegetation Ecology, Ministry of Education, Jilin Songnen Grassland Ecosystem National Observation and Research Station, Northeast Normal University, Changchun, 130024, China
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Zhang L, Mu C, Zhang T, Yang D, Wang C, Chen Q, Tang L, Fan L, Liu C, Shen J, Li H. Development of targeted therapy therapeutics to sensitize triple-negative breast cancer chemosensitivity utilizing bacteriophage phi29 derived packaging RNA. J Nanobiotechnology 2021; 19:13. [PMID: 33413427 PMCID: PMC7792131 DOI: 10.1186/s12951-020-00758-4] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2020] [Accepted: 12/15/2020] [Indexed: 02/14/2023] Open
Abstract
Background To date, triple-negative breast cancer (TNBC) treatment options are limited because of the loss of target receptors and, as a result, are only managed with chemotherapy. What is worse is that TNBC is frequently developing resistance to chemotherapy. By using small interfering RNA (siRNA)-based therapeutics, our recent work demonstrated X-box-binding protein 1 (XBP1) was linked to human epidermal growth factor receptor 2 positive (HER2+) breast cancer development and chemoresistance. Given the instability, off-target effects, net negative charge, and hydrophobicity of siRNA in vivo utilization and clinical transformation, its use in treatment is hampered. Thus, the development of a siRNA-based drug delivery system (DDS) with ultra-stability and specificity is necessary to address the predicament of siRNA delivery. Results Here, we assembled RNase resistant RNA nanoparticles (NPs) based on the 3WJ structure from Phi29 DNA packaging motor. To improved targeted therapy and sensitize TNBC to chemotherapy, the RNA NPs were equipped with an epidermal growth factor receptor (EGFR) targeting aptamer and XBP1 siRNA. We found our RNA NPs could deplete XBP1 expression and suppress tumor growth after intravenous administration. Meanwhile, RNA NPs treatment could promote sensitization to chemotherapy and impede angiogenesis in vivo. Conclusions The results further demonstrate that our RNA NPs could serve as an effective and promising platform not only for siRNA delivery but also for chemotherapy-resistant TNBC therapy.![]()
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Affiliation(s)
- Long Zhang
- School of Biomedical Engineering, School of Ophthalmology & Optometry and Eye Hospital, Wenzhou Medical University, Wenzhou, 325035, Zhejiang, People's Republic of China.,Engineering Research Center of Clinical Functional Materials and Diagnosis & Treatment Devices of Zhejiang Province, Wenzhou Institute, University of Chinese Academy of Sciences, Wenzhou, 325011, Zhejiang, People's Republic of China
| | - Chaofeng Mu
- Department of Pharmaceutics, College of Pharmaceutical Sciences, Zhejiang Chinese Medical University, Hangzhou, 310053, Zhejiang, People's Republic of China
| | - Tinghong Zhang
- School of Biomedical Engineering, School of Ophthalmology & Optometry and Eye Hospital, Wenzhou Medical University, Wenzhou, 325035, Zhejiang, People's Republic of China. .,Engineering Research Center of Clinical Functional Materials and Diagnosis & Treatment Devices of Zhejiang Province, Wenzhou Institute, University of Chinese Academy of Sciences, Wenzhou, 325011, Zhejiang, People's Republic of China.
| | - Dejun Yang
- School of Biomedical Engineering, School of Ophthalmology & Optometry and Eye Hospital, Wenzhou Medical University, Wenzhou, 325035, Zhejiang, People's Republic of China.,Engineering Research Center of Clinical Functional Materials and Diagnosis & Treatment Devices of Zhejiang Province, Wenzhou Institute, University of Chinese Academy of Sciences, Wenzhou, 325011, Zhejiang, People's Republic of China
| | - Chenou Wang
- School of Biomedical Engineering, School of Ophthalmology & Optometry and Eye Hospital, Wenzhou Medical University, Wenzhou, 325035, Zhejiang, People's Republic of China
| | - Qiong Chen
- School of Biomedical Engineering, School of Ophthalmology & Optometry and Eye Hospital, Wenzhou Medical University, Wenzhou, 325035, Zhejiang, People's Republic of China
| | - Lin Tang
- School of Biomedical Engineering, School of Ophthalmology & Optometry and Eye Hospital, Wenzhou Medical University, Wenzhou, 325035, Zhejiang, People's Republic of China
| | - Luhui Fan
- Department of Pharmaceutics, College of Pharmaceutical Sciences, Zhejiang Chinese Medical University, Hangzhou, 310053, Zhejiang, People's Republic of China
| | - Cong Liu
- Department of Pharmaceutics, College of Pharmaceutical Sciences, Zhejiang Chinese Medical University, Hangzhou, 310053, Zhejiang, People's Republic of China
| | - Jianliang Shen
- School of Biomedical Engineering, School of Ophthalmology & Optometry and Eye Hospital, Wenzhou Medical University, Wenzhou, 325035, Zhejiang, People's Republic of China. .,Engineering Research Center of Clinical Functional Materials and Diagnosis & Treatment Devices of Zhejiang Province, Wenzhou Institute, University of Chinese Academy of Sciences, Wenzhou, 325011, Zhejiang, People's Republic of China.
| | - Huaqiong Li
- School of Biomedical Engineering, School of Ophthalmology & Optometry and Eye Hospital, Wenzhou Medical University, Wenzhou, 325035, Zhejiang, People's Republic of China. .,Engineering Research Center of Clinical Functional Materials and Diagnosis & Treatment Devices of Zhejiang Province, Wenzhou Institute, University of Chinese Academy of Sciences, Wenzhou, 325011, Zhejiang, People's Republic of China.
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Zheng H, Xu C, Fei Y, Wang J, Yang M, Fang L, Wei Y, Mu C, Sheng Y, Li F, Zhu J, Tao C. Monoterpenes-containing PEGylated transfersomes for enhancing joint cavity drug delivery evidenced by CLSM and double-sited microdialysis. Materials Science and Engineering: C 2020; 113:110929. [DOI: 10.1016/j.msec.2020.110929] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/21/2018] [Revised: 04/01/2020] [Accepted: 04/01/2020] [Indexed: 10/24/2022]
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Zhang L, Mu C, Zhang T, Wang Y, Wang Y, Fan L, Liu C, Chen H, Shen J, Wei K, Li H. Systemic Delivery of Aptamer-Conjugated XBP1 siRNA Nanoparticles for Efficient Suppression of HER2+ Breast Cancer. ACS Appl Mater Interfaces 2020; 12:32360-32371. [PMID: 32613835 DOI: 10.1021/acsami.0c07353] [Citation(s) in RCA: 25] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
siRNA therapeutics as an emerging class of drug development is successfully coming to clinical utilization. The RNA-based therapy is widely utilized to explore the mechanism and cure a variety of gene-specific diseases. Tumor is an oncogene-driven disease; many genes are related to tumor progression and chemoresistance. Although human epidermal growth factor receptor 2 (HER2)-targeted monoclonal antibody therapy has dramatically improved the survival rate, chemotherapy remains essential to HER2-positive (HER2+) breast cancer patients. Recently, X-box binding protein 1 (XBP1) has been involved in triple-negative breast cancer (TNBC) chemoresistance and progression, but its function in HER2+ breast cancer is poorly explored. Here, we silenced XBP1 expression using RNase-resistant RNA nanoparticles (NPs). Intravenous injection of RNA NPs with HER2-specific aptamers resulted in strong binding to tumors but not to healthy tissues. XBP1 deletion by RNA NPs impaired angiogenesis and inhibited cell proliferation, significantly suppressed breast cancer growth, and promoted the sensitization of chemotherapy in an HER2+ breast cancer mouse model. Overall, these results reveal the function of XBP1 in HER2+ breast cancer development and chemoresistance and imply that targeting XBP1 by RNA NPs may offer an easy and promising strategy for a combination treatment of breast cancer in the future.
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Affiliation(s)
- Long Zhang
- School of Biomedical Engineering, School of Ophthalmology & Optometry and Eye Hospital, Wenzhou Medical University, Wenzhou, Zhejiang Province 325035, P. R. China
- Engineering Research Center of Clinical Functional Materials and Diagnosis & Treatment Devices of Zhejiang Province, Wenzhou Institute, University of Chinese Academy of Sciences, Wenzhou, Zhejiang Province 325011, P. R. China
| | - Chaofeng Mu
- Department of Pharmaceutics, College of Pharmaceutical Sciences, Zhejiang Chinese Medical University, Hangzhou, Zhejiang Province 310053, P. R. China
| | - Tinghong Zhang
- School of Biomedical Engineering, School of Ophthalmology & Optometry and Eye Hospital, Wenzhou Medical University, Wenzhou, Zhejiang Province 325035, P. R. China
- Engineering Research Center of Clinical Functional Materials and Diagnosis & Treatment Devices of Zhejiang Province, Wenzhou Institute, University of Chinese Academy of Sciences, Wenzhou, Zhejiang Province 325011, P. R. China
| | - Yingying Wang
- School of Biomedical Engineering, School of Ophthalmology & Optometry and Eye Hospital, Wenzhou Medical University, Wenzhou, Zhejiang Province 325035, P. R. China
- Engineering Research Center of Clinical Functional Materials and Diagnosis & Treatment Devices of Zhejiang Province, Wenzhou Institute, University of Chinese Academy of Sciences, Wenzhou, Zhejiang Province 325011, P. R. China
| | - Yili Wang
- School of Biomedical Engineering, School of Ophthalmology & Optometry and Eye Hospital, Wenzhou Medical University, Wenzhou, Zhejiang Province 325035, P. R. China
- Engineering Research Center of Clinical Functional Materials and Diagnosis & Treatment Devices of Zhejiang Province, Wenzhou Institute, University of Chinese Academy of Sciences, Wenzhou, Zhejiang Province 325011, P. R. China
| | - Luhui Fan
- Department of Pharmaceutics, College of Pharmaceutical Sciences, Zhejiang Chinese Medical University, Hangzhou, Zhejiang Province 310053, P. R. China
| | - Cong Liu
- Department of Pharmaceutics, College of Pharmaceutical Sciences, Zhejiang Chinese Medical University, Hangzhou, Zhejiang Province 310053, P. R. China
| | - Hao Chen
- School of Biomedical Engineering, School of Ophthalmology & Optometry and Eye Hospital, Wenzhou Medical University, Wenzhou, Zhejiang Province 325035, P. R. China
- Engineering Research Center of Clinical Functional Materials and Diagnosis & Treatment Devices of Zhejiang Province, Wenzhou Institute, University of Chinese Academy of Sciences, Wenzhou, Zhejiang Province 325011, P. R. China
| | - Jianliang Shen
- School of Biomedical Engineering, School of Ophthalmology & Optometry and Eye Hospital, Wenzhou Medical University, Wenzhou, Zhejiang Province 325035, P. R. China
- Engineering Research Center of Clinical Functional Materials and Diagnosis & Treatment Devices of Zhejiang Province, Wenzhou Institute, University of Chinese Academy of Sciences, Wenzhou, Zhejiang Province 325011, P. R. China
| | - Kun Wei
- School of Biomedical Engineering, School of Ophthalmology & Optometry and Eye Hospital, Wenzhou Medical University, Wenzhou, Zhejiang Province 325035, P. R. China
- Engineering Research Center of Clinical Functional Materials and Diagnosis & Treatment Devices of Zhejiang Province, Wenzhou Institute, University of Chinese Academy of Sciences, Wenzhou, Zhejiang Province 325011, P. R. China
| | - Huaqiong Li
- School of Biomedical Engineering, School of Ophthalmology & Optometry and Eye Hospital, Wenzhou Medical University, Wenzhou, Zhejiang Province 325035, P. R. China
- Engineering Research Center of Clinical Functional Materials and Diagnosis & Treatment Devices of Zhejiang Province, Wenzhou Institute, University of Chinese Academy of Sciences, Wenzhou, Zhejiang Province 325011, P. R. China
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Gao Y, Lu B, Xu B, Jiang T, Hu H, Chen W, Zhang F, Song L, Mu C, Xu L, Zhao N, An Y. Diagnostic Performance Of Optimal Fusion Model Algorithm Based Computed Tomography Derived Fractional Flow Reserve For Hemodynamic Ischemia Assessment. J Cardiovasc Comput Tomogr 2020. [DOI: 10.1016/j.jcct.2020.06.086] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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10
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Mu C, Lee S. 0200 Trait Mindfulness Moderates the Within-Person Relationship Between Sleep and Pain in Nurses. Sleep 2020. [DOI: 10.1093/sleep/zsaa056.198] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Abstract
Introduction
Sleep and pain have a bidirectional relationship in clinical populations; however, we know less about the daily association in non-clinical but potentially vulnerable populations. Nurses are prone to poor sleep and pain symptoms due to work schedules and occupational stress. Implications from mindfulness-based interventions suggest that mindfulness may play a role in improving sleep and subsequently, reducing pain. The current study examined the within-person relationship between sleep and pain in nurses, and whether trait mindfulness moderates the relationship.
Methods
Participants were 60 nurses employed at a cancer hospital (Mage=35.35±11.83, 32% reported pain). For 14 consecutive days, ecological momentary assessment collected participants’ sleep characteristics, pain symptoms (i.e., chest pain, headaches, upset stomach, and other pain), and pain interference with daily activities. Trait mindfulness was measured using the 15-item Mindful Attention Awareness Scale. Multilevel modeling decomposed variances at the between- and within-person levels.
Results
At the between-person level, after controlling for sociodemographic covariates, more frequent insomnia symptoms (β=0.35) or lower sleep sufficiency (β=-0.19) were associated with more pain symptoms (ps<.05). Inversely, individuals with more pain symptoms reported lower sleep sufficiency (β=-0.41, p<.05). At the within-person level, after nights with poorer sleep quality (β=-0.08, p<.01), lower sleep sufficiency (β=-0.08, p<.01), or shorter sleep duration (β =-0.03, p<.05), participants reported more pain symptoms the following day. There were significant interactions of mindfulness with (a) sleep sufficiency predicting pain interference and (b) sleep duration predicting number of pain symptoms, such that the adverse associations of less sufficient and shorter sleep with more pain were more apparent in those with lower mindfulness than those with higher mindfulness.
Conclusion
Although there was a bidirectional association between sleep and pain at the between-person level, sleep was more likely to be the predictor of pain at the within-person level in oncology nurses. The significant moderation by mindfulness suggest that promoting mindfulness among nurses, prone to having poor sleep and pain, may reduce the adverse impact of poor sleep on daily pain.
Support
This work was supported, in part, by the University of South Florida College of Behavioral & Community Sciences Internal Grant Program (PI: Lee, Grant No. 0134930).
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Affiliation(s)
- C Mu
- University of South Florida, School of Aging Studies, Tampa, FL
| | - S Lee
- University of South Florida, School of Aging Studies, Tampa, FL
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11
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Lee S, Mu C, Gonzalez BD, Vinci CE, Small BJ. 0149 Nightly Sleep Characteristics are Associated with Next-Day Mindfulness. Sleep 2020. [DOI: 10.1093/sleep/zsaa056.147] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Abstract
Introduction
Previous research shows that insufficient and poor sleep is associated with perceiving more stressors the following day. Sleep may also be associated with daily mindfulness, a state in which one is highly aware and focused on the present moment without evaluating or judging that moment. The association between high mindfulness and better sleep is well-established; yet, less is known about the temporal directionality between sleep and mindfulness. This study examined whether nightly sleep predicts next-day mindfulness, and vice versa.
Methods
Participants were 60 middle-aged adults working as a full-time nurse at a cancer hospital (Mage=35.35±11.83). Using ecological momentary assessments for 14 days, we asked participants about their previous night’s sleep upon waking and participants completed the 5-item state Mindful Attention Awareness Scale an average of 3 times/day. Multilevel modeling examined variance at the between- and within-person levels and tested two temporal directions simultaneously: better sleep predicting mindfulness and mindfulness predicting better sleep.
Results
Daily mindfulness, sleep duration, sleep sufficiency, and sleep quality displayed 34%, 85%, 82%, and 85% within-person variation, respectively. At the within-person level, daily mindfulness was greater on days following longer than usual sleep duration (B=0.39hrs or 23min, p<.01) and greater than usual sleep sufficiency (B=0.26, p<.001). The within-person link between sleep sufficiency and mindfulness remained even after controlling for the strong association of workdays with less sleep sufficiency. Conversely, mindfulness was not predictive of sleep outcomes. At the between-person level, participants who had greater sleep sufficiency and higher sleep quality overall reported greater mindfulness. These associations remained after adjusting for sociodemographics, dayshift vs. nightshift, and workdays vs. non-work days.
Conclusion
Sufficient sleep duration and perceived sleep sufficiency may be antecedents of how mindful individuals are the following day. Future analyses will test whether the daily link between sleep and mindfulness contributes to health outcomes.
Support
This work was supported, in part, by the University of South Florida College of Behavioral & Community Sciences Internal Grant Program (PI: Lee, Grant No. 0134930).
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Affiliation(s)
- S Lee
- University of South Florida, Tampa, FL
| | - C Mu
- University of South Florida, Tampa, FL
| | | | | | - B J Small
- University of South Florida, Tampa, FL
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12
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Mu C, Lee S, Risal PG, Vigoureux TF, Bugos J, Meng H. 0341 Preliminary Effects of a Music Intervention on Actigraphy-Measured Sleep Among Older Adults with Dementia. Sleep 2020. [DOI: 10.1093/sleep/zsaa056.338] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
Abstract
Introduction
Music may benefit sleep and daytime alertness by decreasing stress, increasing attention, and potentially, slowing the progression of dementia. This study examined preliminary effects of a group-based music intervention on sleep health among older adults with dementia.
Methods
Participants were older adults with dementia living in an assisted living facility (n=9; Mage=80.11; Mrange=63−89 years). Cohort 1 (n=4) received the intervention in the morning and cohort 2 (n=5) received the intervention in the afternoon. Participants completed a 4-week intervention protocol (12 sessions) along with a one-week actigraphy sleep assessment before and after the intervention. Informed by sleep literature, we constructed a composite sleep health score encompassing Regularity, Satisfaction or quality, Alertness, Timing, Efficiency, and Duration (higher scores indicating more daily sleep problems). Using descriptive statistics and multilevel modeling, we evaluated preliminary effects of the intervention on overall sleep health and each of the sleep dimensions.
Results
Six out of nine participants exhibited a decrease in overall sleep problems at post-intervention. All 4 participants in cohort 1 showed improvement in overall sleep health at post-intervention. Specifically, in cohort 1, participants exhibited a decline in nightly sleep problems, decreased daytime nap duration, and number of naps. In contrast, while two out of five participants in cohort 2 exhibited improvement in overall sleep health, the remainder of the participants exhibited no improvement in daily sleep problems, especially in nap domains. Across cohorts, those younger in age, with vascular dementia, lower weight, and not taking sleep or hypertension related medications tended to respond better to the intervention.
Conclusion
Our preliminary results demonstrate the feasibility and potential benefit of a group-based music intervention in improving overall sleep health among older patients with dementia. Implications for conducting community-based non-pharmacological interventions to improve sleep and daytime functioning among older adults with dementia will be discussed.
Support
This work was supported, in part, by the Florida Department of Health Ed and Ethel Moore Alzheimer’s Disease Research Award (PI: Meng, Grant #9AZ28).
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Affiliation(s)
- C Mu
- University of South Florida, School of Aging Studies, Tampa, FL
| | - S Lee
- University of South Florida, School of Aging Studies, Tampa, FL
| | - P G Risal
- University of South Florida, School of Aging Studies, Tampa, FL
| | - T F Vigoureux
- University of South Florida, School of Aging Studies, Tampa, FL
| | - J Bugos
- University of South Florida, School of Aging Studies, Tampa, FL
| | - H Meng
- University of South Florida, School of Aging Studies, Tampa, FL
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Jiang J, Mu C, Zhao J, Zeng D, Wang C, Li H, Ye J, Zhang T. P1.11-07 CfDNA from Bronchoalveolar Lavage Fluid for the Identification of Solid Pulmonary Nodules: A New Medium of Liquid Biopsy. J Thorac Oncol 2019. [DOI: 10.1016/j.jtho.2019.08.1080] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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14
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Zhu J, Zou J, Mu C, Yang W, Gu M, Lin J, Song X, Zheng H, Li F. Intranasal administration of pullulan-based nanoparticles for enhanced delivery of adriamycin into the brain: in vitro and in vivo evaluation. Pharmazie 2019; 74:39-46. [PMID: 30782249 DOI: 10.1691/ph.2019.8124] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Subscribe] [Scholar Register] [Indexed: 09/29/2022]
Abstract
Intranasal (i.n.) administration is an efficient route for enhancing drug delivery to the brain, bypassing the blood-brain barrier (BBB) and eliminating systemic side effects. The purpose of this study was to investigate the nose-to-brain delivery efficiency of adriamycin (ADM) loaded in cholesterol-modified pullulan self-assembled nanoparticles (CHSP-SAN) via i.n. administration. The prepared nanodrugs (ADM-CHSP-SAN) were characterized as uniform size (112.8±1.02 nm), high drug loading capacity (7.65±0.58 %), and sustained release. CHSP-SAN showed good biocompatibility and low toxicity on HBMEC and C6 cells. The enhanced delivery of ADM across the BBB with CHSP-SAN was demonstrated by the reduced half maximal inhibitory concentration (IC50) value and the increased apoptosis proportion of C6 cells. The pharmacokinetics of ADM-CHSP-SAN was accessed by cerebral microdialysis technique. The pharmacokinetic results showed higher peak concentration (Cmax), area under the curve (AUC0-12h) and shorter peak time (Tmax) after i.n. administration that after intravenous (i.v.) administration. The i.n. administration of CHSP-SAN greatly increased ADM availability in cerebral tissue compared to that of ADM solution. Collectively, CHSP-SAN strikingly increased ADM transport across the BBB and improved its availability in brain via i.n. administration.
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15
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Tao J, Fei W, Tang H, Li C, Mu C, Zheng H, Li F, Zhu Z. Angiopep-2-Conjugated "Core-Shell" Hybrid Nanovehicles for Targeted and pH-Triggered Delivery of Arsenic Trioxide into Glioma. Mol Pharm 2019; 16:786-797. [PMID: 30620881 DOI: 10.1021/acs.molpharmaceut.8b01056] [Citation(s) in RCA: 37] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
The poor capability of drugs to permeate through the blood-brain barrier (BBB) and further release inside glioma greatly limits the curative effects of glioma chemotherapies. In this study, we prepared angiopep-2-conjugated liposome-silica hybrid nanovehicles for targeted delivery and increased the permeation of arsenic trioxide (ATO) in glioma. Polyacrylic acid (PAA) was grafted on mesoporous silica nanoparticles (MSN) for pH-sensitive release and supporting the lipid membrane. The prepared "core-shell" nanovehicles (ANG-LP-PAA-MSN) were characterized with uniform size, high drug loading efficiency (8.19 ± 0.51%), and superior pH-sensitive release feature. From the experiments, the enhanced targeted delivery of ATO by ANG-LP-PAA-MSN (ANG-LP-PAA-MSN@ATO) was evidenced by the improvement of transport, enhanced cellular uptake, and apoptosis in vitro. In addition, the pharmacokinetic study was creatively carried out through the blood-glioma synchronous microdialysis and revealed that the half-life ( t1/2) of blood and glioma tissue in the ANG-LP-PAA-MSN@ATO treatment group was extended by 1.65 and 2.34 times compared with the ATO solution group (ATO-Sol). The targeting efficiency of ANG-LP-PAA-MSN@ATO (24.96%) was dramatically stronger than that of the ATO-Sol (5.94%). Importantly, ANG-LP-PAA-MSN@ATO had a higher accumulation (4.6 ± 2.6% ID per g) in tumor tissues and showed a better therapeutic efficacy in intracranial C6 glioma bearing rats. Taken together, the blood-glioma synchronous microdialysis was successful used for the pharmacokinetic study and real-time monitoring of drug concentrations in blood and glioma; ANG-LP-PAA-MSN could be a promising targeted drug delivery system for glioma therapy.
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Affiliation(s)
- Jiaoyang Tao
- College of Pharmaceutical Science , Zhejiang Chinese Medical University , Hangzhou 311402 , China
| | - Weidong Fei
- Department of Pharmacy , Women's Hospital, Zhejiang University School of Medicine , Hangzhou 310006 , China
| | - Hongxia Tang
- College of Pharmaceutical Science , Zhejiang Chinese Medical University , Hangzhou 311402 , China
| | - Chaoqun Li
- College of Pharmaceutical Science , Zhejiang Chinese Medical University , Hangzhou 311402 , China
| | - Chaofeng Mu
- College of Pharmaceutical Science , Zhejiang Chinese Medical University , Hangzhou 311402 , China
| | - Hongyue Zheng
- Libraries of Zhejiang Chinese Medical University , Zhejiang Chinese Medical University , Hangzhou 310053 , China
| | - Fanzhu Li
- College of Pharmaceutical Science , Zhejiang Chinese Medical University , Hangzhou 311402 , China
| | - Zhihong Zhu
- College of Pharmaceutical Science , Zhejiang Chinese Medical University , Hangzhou 311402 , China
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16
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Luo J, Sun J, Luo X, Wei Y, Zheng H, Mu C, Yao W. Low molecular weight chitosan-based conjugates for efficient Rhein oral delivery: synthesis, characterization, and pharmacokinetics. Drug Dev Ind Pharm 2018; 45:96-104. [DOI: 10.1080/03639045.2018.1522326] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Affiliation(s)
- Jingwen Luo
- College of Pharmaceutical Science, Zhejiang Chinese Medical University, Hangzhou, China
| | - Jiang Sun
- College of Pharmaceutical Science, Zhejiang Chinese Medical University, Hangzhou, China
| | - Xiaoting Luo
- College of Pharmaceutical Science, Zhejiang Chinese Medical University, Hangzhou, China
| | - Yinghui Wei
- College of Pharmaceutical Science, Zhejiang Chinese Medical University, Hangzhou, China
| | - Hangsheng Zheng
- College of Pharmaceutical Science, Zhejiang Chinese Medical University, Hangzhou, China
| | - Chaofeng Mu
- College of Pharmaceutical Science, Zhejiang Chinese Medical University, Hangzhou, China
| | - Wenjie Yao
- College of Pharmaceutical Science, Zhejiang Chinese Medical University, Hangzhou, China
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17
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Mu C, Wu X, Zhou X, Wolfram J, Shen J, Zhang D, Mai J, Xia X, Holder AM, Ferrari M, Liu X, Shen H. Chemotherapy Sensitizes Therapy-Resistant Cells to Mild Hyperthermia by Suppressing Heat Shock Protein 27 Expression in Triple-Negative Breast Cancer. Clin Cancer Res 2018; 24:4900-4912. [PMID: 29921732 DOI: 10.1158/1078-0432.ccr-17-3872] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/31/2017] [Revised: 05/10/2018] [Accepted: 06/14/2018] [Indexed: 12/18/2022]
Abstract
Purpose: Triple-negative breast cancer (TNBC) is a clinically aggressive disease with poor prognosis. Conventional chemotherapeutics are generally able to shrink the tumor mass, but often fail to completely eradicate cancer stem-like cells (CSCs) that are responsible for high risk of relapse and frequent metastases. In this study, we examined thermal sensibility of CSCs, developed an approach that enabled concurrent elimination of both the bulk of cancer cells and CSCs, and investigated the underlying mechanism.Experimental Design: We designed a platform consisting of gold nanoparticle-coated porous silicon microparticle (AuPSM) that was also loaded with docetaxel micelles (mDTXs) to enable concurrent killing of the bulk of cancer cells by released mDTX and CSCs by mild hyperthermia upon stimulation of AuPSM with near infrared. In addition, we examined the role of heat shock proteins in sensitizing CSC killing. Finally, we applied mDTX-loaded AuPSM to treat mice with SUM159 and 4T1 orthotopic tumors and evaluated tumor growth and tumor metastasis.Results: MDA-MB-231 and SUM159 TNBC cells treated with mDTX-loaded AuPSM and mild hyperthermia displayed significantly reduced efficiencies in mammosphere formation than those treated with mDTX alone or mild hyperthermia alone. Combination treatment also completely inhibited SUM159 orthotopic tumor growth and 4T1 tumor metastasis. Mechanistically, DTX treatment suppressed expression of heat shock protein 27 in cancer cells including the CSCs, rendering cells sensitive to mild hyperthermia.Conclusions: Our results indicate that chemotherapy sensitizes CSC to mild hyperthermia. We have developed an effective therapeutic approach to eliminate therapy-resistant cells in TNBC. Clin Cancer Res; 24(19); 4900-12. ©2018 AACR.
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Affiliation(s)
- Chaofeng Mu
- Department of Nanomedicine, Houston Methodist Research Institute, Houston, Texas.,Department of Pharmaceutics, College of Pharmacy, Zhejiang Chinese Medical University, Hangzhou, China
| | - Xiaoyan Wu
- Department of Nanomedicine, Houston Methodist Research Institute, Houston, Texas.,Department of Pediatrics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Xinyu Zhou
- Department of Nanomedicine, Houston Methodist Research Institute, Houston, Texas
| | - Joy Wolfram
- Department of Nanomedicine, Houston Methodist Research Institute, Houston, Texas
| | - Jianliang Shen
- Department of Nanomedicine, Houston Methodist Research Institute, Houston, Texas.,State Key Laboratory of Ophthalmology, School of Biomedical Engineering, Wenzhou Medical University, Wenzhou, China
| | - Dechen Zhang
- Department of Nanomedicine, Houston Methodist Research Institute, Houston, Texas
| | - Junhua Mai
- Department of Nanomedicine, Houston Methodist Research Institute, Houston, Texas
| | - Xiaojun Xia
- Department of Nanomedicine, Houston Methodist Research Institute, Houston, Texas
| | - Ashley M Holder
- Department of Nanomedicine, Houston Methodist Research Institute, Houston, Texas.,Department of Surgery, Houston Methodist Hospital, Houston, Texas
| | - Mauro Ferrari
- Department of Nanomedicine, Houston Methodist Research Institute, Houston, Texas.,Department of Medicine, Weill Cornell Medical College, New York, New York
| | - Xuewu Liu
- Department of Nanomedicine, Houston Methodist Research Institute, Houston, Texas
| | - Haifa Shen
- Department of Nanomedicine, Houston Methodist Research Institute, Houston, Texas. .,Department of Cell and Developmental Biology, Weill Cornell Medical College, New York, New York.,Cancer Center, Houston Methodist Hospital, Houston, Texas
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18
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Liu H, Mai J, Shen J, Wolfram J, Li Z, Zhang G, Xu R, Li Y, Mu C, Zu Y, Li X, Lokesh GL, Thiviyanathan V, Volk DE, Gorenstein DG, Ferrari M, Hu Z, Shen H. A Novel DNA Aptamer for Dual Targeting of Polymorphonuclear Myeloid-derived Suppressor Cells and Tumor Cells. Am J Cancer Res 2018; 8:31-44. [PMID: 29290791 PMCID: PMC5743458 DOI: 10.7150/thno.21342] [Citation(s) in RCA: 36] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2017] [Accepted: 09/28/2017] [Indexed: 12/17/2022] Open
Abstract
Aptamers have the potential to be used as targeting ligands for cancer treatment as they form unique spatial structures. Methods: In this study, a DNA aptamer (T1) that accumulates in the tumor microenvironment was identified through in vivo selection and validation in breast cancer models. The use of T1 as a targeting ligand was evaluated by conjugating the aptamer to liposomal doxorubicin. Results: T1 exhibited a high affinity for both tumor cells and polymorphonuclear myeloid-derived suppressor cells (PMN-MDSCs). Treatment with T1 targeted doxorubicin liposomes triggered apoptosis of breast cancer cells and PMN-MDSCs. Suppression of PMN-MDSCs, which serve an immunosuppressive function, leads to increased intratumoral infiltration of cytotoxic T cells. Conclusion: The cytotoxic and immunomodulatory effects of T1-liposomes resulted in superior therapeutic efficacy compared to treatment with untargeted liposomes, highlighting the promise of T1 as a targeting ligand in cancer therapy.
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19
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Shen J, Kim HC, Wolfram J, Mu C, Zhang W, Liu H, Xie Y, Mai J, Zhang H, Li Z, Guevara M, Mao ZW, Shen H. A Liposome Encapsulated Ruthenium Polypyridine Complex as a Theranostic Platform for Triple-Negative Breast Cancer. Nano Lett 2017; 17:2913-2920. [PMID: 28418672 PMCID: PMC5484597 DOI: 10.1021/acs.nanolett.7b00132] [Citation(s) in RCA: 89] [Impact Index Per Article: 12.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/03/2023]
Abstract
Ruthenium coordination complexes have the potential to serve as novel theranostic agents for cancer. However, a major limitation in their clinical implementation is effective tumor accumulation. In this study, we have developed a liposome-based theranostic nanodelivery system for [Ru(phen)2dppz](ClO4)2 (Lipo-Ru). This ruthenium polypyridine complex emits a strong fluorescent signal when incorporated in the hydrophobic lipid bilayer of the delivery vehicle or in the DNA helix, enabling visualization of the therapeutic agent in tumor tissues. Incubation of MDA-MB-231 breast cancer cells with Lipo-Ru induced double-strand DNA breaks and triggers apoptosis. In a mouse model of triple-negative breast cancer, treatment with Lipo-Ru dramatically reduced tumor growth. Biodistribution studies of Lipo-Ru revealed that more than 20% of the injected dose accumulated in the tumor. These results suggest that Lipo-Ru could serve as a promising theranostic platform for cancer.
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Affiliation(s)
- Jianliang Shen
- Department of Nanomedicine, Houston Methodist Research Institute, Houston, TX 77030, United States
| | - Han-Cheon Kim
- Department of Nanomedicine, Houston Methodist Research Institute, Houston, TX 77030, United States
| | - Joy Wolfram
- Department of Nanomedicine, Houston Methodist Research Institute, Houston, TX 77030, United States
- Department of Transplantation, Mayo Clinic, Jacksonville, FL 3224, United States
| | - Chaofeng Mu
- Department of Nanomedicine, Houston Methodist Research Institute, Houston, TX 77030, United States
| | - Wei Zhang
- MOE Key Laboratory of Bioinorganic and Synthetic Chemistry, School of Chemistry and Chemical Engineering, Sun Yat-sen University, Guangzhou, 510275, China
| | - Haoran Liu
- Department of Nanomedicine, Houston Methodist Research Institute, Houston, TX 77030, United States
| | - Yan Xie
- Department of Nanomedicine, Houston Methodist Research Institute, Houston, TX 77030, United States
- Research Center for Health and Nutrition, Shanghai University of Traditional Chinese Medicine, Shanghai, 201203, China
| | - Junhua Mai
- Department of Nanomedicine, Houston Methodist Research Institute, Houston, TX 77030, United States
| | - Hang Zhang
- MOE Key Laboratory of Bioinorganic and Synthetic Chemistry, School of Chemistry and Chemical Engineering, Sun Yat-sen University, Guangzhou, 510275, China
| | - Zhi Li
- Department of Nanomedicine, Houston Methodist Research Institute, Houston, TX 77030, United States
| | - Maria Guevara
- Department of Nanomedicine, Houston Methodist Research Institute, Houston, TX 77030, United States
| | - Zong-Wan Mao
- MOE Key Laboratory of Bioinorganic and Synthetic Chemistry, School of Chemistry and Chemical Engineering, Sun Yat-sen University, Guangzhou, 510275, China
| | - Haifa Shen
- Department of Nanomedicine, Houston Methodist Research Institute, Houston, TX 77030, United States
- Department of Cell and Developmental Biology, Weill Cornell Medicine, New York, NY 10065, United States
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Zhao J, Wang Y, Mu C, Xu Y, Sang J. MAGEA1 interacts with FBXW7 and regulates ubiquitin ligase-mediated turnover of NICD1 in breast and ovarian cancer cells. Oncogene 2017; 36:5023-5034. [DOI: 10.1038/onc.2017.131] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2016] [Revised: 03/22/2017] [Accepted: 03/27/2017] [Indexed: 12/17/2022]
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Shen J, Liu H, Mu C, Wolfram J, Zhang W, Kim HC, Zhu G, Hu Z, Ji LN, Liu X, Ferrari M, Mao ZW, Shen H. Multi-step encapsulation of chemotherapy and gene silencing agents in functionalized mesoporous silica nanoparticles. Nanoscale 2017; 9:5329-5341. [PMID: 28398453 DOI: 10.1039/c7nr00377c] [Citation(s) in RCA: 36] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/14/2023]
Abstract
Drug to carrier ratio is an important consideration in designing drug platforms, since a low loading capacity necessitates the use of high doses of carriers, which can result in side effects. Here, we have engineered a platform to co-deliver small molecule drugs and small interfering RNA (siRNA). This platform consists of cyclodextrin-grafted polyethylenimine (CP) functionalized mesoporous silica nanoparticles (MSNP). A unique multi-step encapsulation procedure was used to obtain a high loading capacity for doxorubicin (DOX) and siRNA oligos specific for the PKM2 gene that encodes pyruvate kinase M2, an enzyme catalyzing the final rate-limiting step in glycolysis. We systematically characterized this platform (CP-MSNP@DOX/PKM2) in vitro and evaluated its therapeutic efficacy in vivo with a mouse model of triple negative breast cancer (TNBC). Exposure of TNBC cells to CP-MSNP@DOX/PKM2 resulted in suppressed target gene expression, reduced cell proliferation, and enhanced apoptosis. Intravenous administration of the drug substantially decreased the tumor burden in comparison to DOX or siRNA monotherapy. In conclusion, we have developed a platform for efficient co-delivery of small molecule drugs and therapeutic siRNA.
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Affiliation(s)
- Jianliang Shen
- MOE Laboratory of Bioinorganic and Synthetic Chemistry, School of Chemistry and Chemical Engineering, Sun Yat-sen University, Guangzhou 510275, China.
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Mi Y, Wolfram J, Mu C, Liu X, Blanco E, Shen H, Ferrari M. Enzyme-responsive multistage vector for drug delivery to tumor tissue. Pharmacol Res 2016; 113:92-99. [PMID: 27546164 DOI: 10.1016/j.phrs.2016.08.024] [Citation(s) in RCA: 37] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/29/2016] [Revised: 06/02/2016] [Accepted: 08/18/2016] [Indexed: 10/21/2022]
Abstract
Various nanodelivery systems have been designed to release therapeutic agents upon contact with specific enzymes. However, enzyme-triggered release typically takes place in the tissue interstitium, thereby resulting in the extracellular delivery of drugs. Here, we have designed an enzyme-stimulated multistage vector (ESMSV), which enables stimulus-triggered release of drug-encapsulated nanoparticles from a microparticle. Specifically, polymeric nanoparticles with a surface matrix metalloproteinase-2 (MMP2) peptide substrate were conjugated to the surface of porous silicon microparticles. In the presence of MMP2, the polymeric nanoparticles were released into the tumor interstitium. This platform can be used to attain triggered drug release, while simultaneously facilitating the cellular internalization of drugs. The results indicate that nanoparticle release was MMP2-specific and resulted in improved intracellular uptake of hydrophobic agents in the presence of MMP2. Furthermore, in a mouse model of melanoma lung metastasis, systemic delivery of ESMSVs caused a substantial increase in intracellular accumulation of agents in cancer cells in comparison to delivery with non-stimulus-responsive particles.
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Affiliation(s)
- Yu Mi
- Department of Nanomedicine, Houston Methodist Research Institute, 6670 Bertner Ave., Houston, TX 77030, USA
| | - Joy Wolfram
- Department of Nanomedicine, Houston Methodist Research Institute, 6670 Bertner Ave., Houston, TX 77030, USA; CAS Key Laboratory for Biomedical Effects of Nanomaterials & Nanosafety, National Center for Nanoscience & Technology of China, University of Chinese Academy of Sciences, Beijing 100190, China
| | - Chaofeng Mu
- Department of Nanomedicine, Houston Methodist Research Institute, 6670 Bertner Ave., Houston, TX 77030, USA
| | - Xuewu Liu
- Department of Nanomedicine, Houston Methodist Research Institute, 6670 Bertner Ave., Houston, TX 77030, USA
| | - Elvin Blanco
- Department of Nanomedicine, Houston Methodist Research Institute, 6670 Bertner Ave., Houston, TX 77030, USA
| | - Haifa Shen
- Department of Nanomedicine, Houston Methodist Research Institute, 6670 Bertner Ave., Houston, TX 77030, USA; Department of Cell and Developmental Biology, Weill Cornell Medicine, 1300 York Avenue, New York, NY 10065, USA
| | - Mauro Ferrari
- Department of Nanomedicine, Houston Methodist Research Institute, 6670 Bertner Ave., Houston, TX 77030, USA; Department of Medicine, Weill Cornell Medicine, 1300 York Avenue, New York, NY 10065, USA.
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Khalid A, Wolfram J, Ferrari I, Mu C, Mai J, Yang Z, Zhao Y, Ferrari M, Ma X, Shen H. Recent Advances in Discovering the Role of CCL5 in Metastatic Breast Cancer. Mini Rev Med Chem 2016. [DOI: 10.2174/1389557516666160609091427] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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Mi Y, Mu C, Wolfram J, Deng Z, Hu TY, Liu X, Blanco E, Shen H, Ferrari M. A Micro/Nano Composite for Combination Treatment of Melanoma Lung Metastasis. Adv Healthc Mater 2016; 5:936-46. [PMID: 26890862 DOI: 10.1002/adhm.201500910] [Citation(s) in RCA: 38] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2015] [Revised: 12/27/2015] [Indexed: 11/11/2022]
Abstract
The successful treatment of malignant disease generally requires the use of multiple therapeutic agents that are coordinated in a spatiotemporal manner to enable synergy. Here, a porous silicon-based micro/nano composite (MNC) that is capable of simultaneously delivering chemotherapeutic agents and small interfering RNA (siRNA) to the lungs following intravenous injection is designed. The pores of the silicon microparticles are loaded with B-Raf proto-oncogene serine/threonine kinase (BRAF) siRNA-containing liposomes, while the surface is conjugated with docetaxel-encapsulated polymeric nanoparticles. The synergistic antitumor effect of the MNC is demonstrated in vitro in melanoma cells and in vivo using a mouse model for melanoma lung metastasis. The MNC displays superior therapeutic efficacy and increased accumulation in metastatic melanoma lesions in the lungs in comparison to combination therapy with liposomes and polymers. The results indicate that the MNC can be used as an effective delivery vehicle for simultaneous enrichment of multiple therapeutic agents in the lungs.
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Affiliation(s)
- Yu Mi
- Department of Nanomedicine; Houston Methodist Research Institute; 6670 Bertner Ave Houston TX 77030 USA
| | - Chaofeng Mu
- Department of Nanomedicine; Houston Methodist Research Institute; 6670 Bertner Ave Houston TX 77030 USA
| | - Joy Wolfram
- Department of Nanomedicine; Houston Methodist Research Institute; 6670 Bertner Ave Houston TX 77030 USA
| | - Zaian Deng
- Department of Nanomedicine; Houston Methodist Research Institute; 6670 Bertner Ave Houston TX 77030 USA
| | - Tony Ye Hu
- Department of Nanomedicine; Houston Methodist Research Institute; 6670 Bertner Ave Houston TX 77030 USA
| | - Xuewu Liu
- Department of Nanomedicine; Houston Methodist Research Institute; 6670 Bertner Ave Houston TX 77030 USA
| | - Elvin Blanco
- Department of Nanomedicine; Houston Methodist Research Institute; 6670 Bertner Ave Houston TX 77030 USA
| | - Haifa Shen
- Department of Nanomedicine; Houston Methodist Research Institute; 6670 Bertner Ave Houston TX 77030 USA
- Department of Medicine; Weill Cornell Medical College; 1300 York Avenue New York NY 10065 USA
| | - Mauro Ferrari
- Department of Nanomedicine; Houston Methodist Research Institute; 6670 Bertner Ave Houston TX 77030 USA
- Department of Cell and Developmental Biology; Weill Cornell Medical College; 1300 York Avenue New York NY 10065 USA
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Ma S, Tian XY, Zhang Y, Mu C, Shen H, Bismuth J, Pownall HJ, Huang Y, Wong WT. E-selectin-targeting delivery of microRNAs by microparticles ameliorates endothelial inflammation and atherosclerosis. Sci Rep 2016; 6:22910. [PMID: 26956647 PMCID: PMC4783714 DOI: 10.1038/srep22910] [Citation(s) in RCA: 108] [Impact Index Per Article: 13.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2015] [Accepted: 02/24/2016] [Indexed: 12/18/2022] Open
Abstract
E-selectin is a surface marker of endothelial cell (EC) inflammation, one of the hallmarks of atherogenesis. Thus, we tested the hypothesis that delivery of microRNA (miR)-146a and miR-181b with an E-selectin-targeting multistage vector (ESTA-MSV) to inflamed endothelium covering atherosclerotic plaques inhibits atherosclerosis. Cy5-conjugated miR-146a and miR-181b were packaged in polyethylene glycol-polyethyleneimine (PEG/PEI) nanoparticles and loaded into ESTA-MSV microparticles. Both miRs were downregulated in tumor necrosis factor (TNF)-α-treated ECs. Transfection of TNF-α-treated mouse aortas and cultured ECs with miRs was more efficient with ESTA-MSV than with the PEG/PEI. Likewise, miR-146a/-181b packaged in ESTA-MSV efficiently suppressed the chemokines, CCL2, CCL5, CCL8, and CXCL9, and monocyte adhesion to ECs. Complementary in vivo tests were conducted in male apolipoprotein E-deficient mice fed a Western diet and injected intravenously with the particles prepared as above biweekly for 12 weeks. Treatment with miRs packaged in ESTA-MSV but not in PEG/PEI reduced atherosclerotic plaque size. Concurrently, vascular inflammation markers, including macrophages in aortic root lesions and chemokine expression in aortic tissues were reduced while the vascular smooth muscle cells and collagen increased in plaques from ESTA-MSV/miRs-treated vs. vehicle-treated mice. Our data supported our hypothesis that ESTA-MSV microparticle-mediated delivery of miR-146a/-181b ameliorates endothelial inflammation and atherosclerosis.
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Affiliation(s)
- Shuangtao Ma
- Department of Cardiovascular Sciences, Houston Methodist Research Institute, Houston, TX 77030, USA
| | - Xiao Yu Tian
- Department of Cardiovascular Sciences, Houston Methodist Research Institute, Houston, TX 77030, USA.,Institute of Vascular Medicine, School of Biomedical Sciences and Li Ka Shing Institute of Health Sciences, Chinese University of Hong Kong, Shatin, NT, Hong Kong SAR, China
| | - Yunrong Zhang
- Department of Cardiovascular Sciences, Houston Methodist Research Institute, Houston, TX 77030, USA
| | - Chaofeng Mu
- Department of Nanomedicine, Houston Methodist Research Institute, Houston, TX 77030, USA
| | - Haifa Shen
- Department of Nanomedicine, Houston Methodist Research Institute, Houston, TX 77030, USA
| | - Jean Bismuth
- Methodist DeBakey Heart &Vascular Center, Houston Methodist Hospital, Houston, TX 77030, USA
| | - Henry J Pownall
- Department of Cardiovascular Sciences, Houston Methodist Research Institute, Houston, TX 77030, USA
| | - Yu Huang
- Institute of Vascular Medicine, School of Biomedical Sciences and Li Ka Shing Institute of Health Sciences, Chinese University of Hong Kong, Shatin, NT, Hong Kong SAR, China
| | - Wing Tak Wong
- Department of Cardiovascular Sciences, Houston Methodist Research Institute, Houston, TX 77030, USA
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Mu C, Wu X, Ma H, Tao W, Zhang G, Xia X, Shen J, Mai J, Sun T, Sun X, Arlinghaus RB, Shen H. Effective Concentration of a Multikinase Inhibitor within Bone Marrow Correlates with In Vitro Cell Killing in Therapy-Resistant Chronic Myeloid Leukemia. Mol Cancer Ther 2016; 15:899-910. [PMID: 26846820 DOI: 10.1158/1535-7163.mct-15-0577-t] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2015] [Accepted: 01/25/2016] [Indexed: 12/12/2022]
Abstract
Leukemia cells escape BCR-ABL-targeted therapy by developing mutations, such as T315I, in the p210(BCR-ABL) fusion protein in Philadelphia chromosome-positive chronic myeloid leukemia (CML). Although most effort has been focused on development of new tyrosine kinase inhibitors, enrichment of these small-molecule inhibitors in the tumor tissue can also have a profound impact on treatment outcomes. Here, we report that a 2-hour exposure of the T315I-mutant CML cells to 10 μmol/L of the multikinase inhibitor TG101209 suppressed BCR-ABL-independent signaling and caused cell-cycle arrest at G2-M. Further increase in drug concentration to 17.5 μmol/L blocked phosphorylation of the mutant BCR-ABL kinase and its downstream JAK2 and STAT5. The effective dosage to overcome therapy resistance identified in an in vitro setting serves as a guidance to develop the proper drug formulation for in vivo efficacy. A targeted formulation was developed to achieve sustained bone marrow TG101209 concentration at or above 17.5 μmol/L for effective killing of CML cells in vivo Potent inhibition of leukemia cell growth and extended survival were observed in two murine models of CML treated with 40 mg/kg intravenously administered targeted TG101209, but not with the untargeted drug at the same dosage. Our finding provides a unique approach to develop treatments for therapy-resistant CML. Mol Cancer Ther; 15(5); 899-910. ©2016 AACR.
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MESH Headings
- Animals
- Antineoplastic Agents/pharmacology
- Apoptosis/drug effects
- Aurora Kinase B/antagonists & inhibitors
- Bone Marrow/drug effects
- Bone Marrow/metabolism
- Bone Marrow/pathology
- Cell Cycle Checkpoints/drug effects
- Cell Line, Tumor
- Cell Proliferation/drug effects
- Disease Models, Animal
- Drug Resistance, Neoplasm/genetics
- Fusion Proteins, bcr-abl/antagonists & inhibitors
- Fusion Proteins, bcr-abl/genetics
- Fusion Proteins, bcr-abl/metabolism
- Humans
- Leukemia, Myelogenous, Chronic, BCR-ABL Positive/drug therapy
- Leukemia, Myelogenous, Chronic, BCR-ABL Positive/genetics
- Leukemia, Myelogenous, Chronic, BCR-ABL Positive/metabolism
- Leukemia, Myelogenous, Chronic, BCR-ABL Positive/pathology
- Mice
- Mutation
- Protein Kinase Inhibitors/pharmacology
- Pyrimidines/pharmacology
- Signal Transduction/drug effects
- Sulfonamides/pharmacology
- Xenograft Model Antitumor Assays
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Affiliation(s)
- Chaofeng Mu
- Department of Nanomedicine, Houston Methodist Research Institute, Houston, Texas
| | - Xiaoyan Wu
- Department of Nanomedicine, Houston Methodist Research Institute, Houston, Texas
| | - Helen Ma
- Department of Translational Molecular Pathology, The University of Texas M. D. Anderson Cancer Center, Houston, Texas
| | - Wenjing Tao
- Department of Translational Molecular Pathology, The University of Texas M. D. Anderson Cancer Center, Houston, Texas
| | - Guodong Zhang
- Department of Nanomedicine, Houston Methodist Research Institute, Houston, Texas
| | - Xiaojun Xia
- Department of Nanomedicine, Houston Methodist Research Institute, Houston, Texas
| | - Jianliang Shen
- Department of Nanomedicine, Houston Methodist Research Institute, Houston, Texas
| | - Junhua Mai
- Department of Nanomedicine, Houston Methodist Research Institute, Houston, Texas
| | - Tong Sun
- Department of Nanomedicine, Houston Methodist Research Institute, Houston, Texas
| | - Xiaoping Sun
- Department of Laboratory Medicine, The University of Texas M. D. Anderson Cancer Center, Houston, Texas
| | - Ralph B Arlinghaus
- Department of Translational Molecular Pathology, The University of Texas M. D. Anderson Cancer Center, Houston, Texas
| | - Haifa Shen
- Department of Nanomedicine, Houston Methodist Research Institute, Houston, Texas. Department of Cell and Developmental Biology, Weill Cornell Medical College, New York, New York.
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Ma S, Tian XY, Mu C, Shen H, Bismuth J, Wong WT. Abstract 232: E-selectin-targeting Microparticle-mediated Delivery of MicroRNAs for the Treatment of Atherosclerosis. Arterioscler Thromb Vasc Biol 2015. [DOI: 10.1161/atvb.35.suppl_1.232] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Rationale:
E-selectin on inflamed endothelium promotes atherosclerosis and also provides binding sites for targeted drug delivery. We identified an E-selectin-targeting thioaptamer (ESTA) and conjugated it onto a multistage vector (MSV) to form an ESTA-MSV microparticle. In this study, we tested targeted delivery of therapeutic microRNAs (miRs) loaded in the ESTA-MSV for the treatment of atherosclerosis.
Methods and Results:
The expression of E-selectin was up-regulated, while the expressions of miR-146a and miR-181b were down-regulated, in TNF-α-treated human microvascular endothelial cells (HMVECs). MiR-146a and miR-181b mimics were packaged into ESTA-MSV microparticles. We found that both the miR-146a and miR-181b significantly attenuated TNF-α-induced up-regulation of adhesion molecules. Moreover, the monocyte adhesion to HMVECs was also attenuated by the miR-146a or miR-181b. The ApoE
-/-
mice were injected with ESTA-MSV-packaged miR-146a or miR-181b mimic biweekly through tail vein for 12 weeks. Injection of miR mimics resulted in a 4.7- and 5.7-fold overexpression of miR-146a and miR-181b in mouse aortas. The immunofluorescence staining showed the co-localization of E-selectin and miRs in aortic endothelium. MiR-146a and miR-181b significantly inhibited atherosclerotic lesion size, lipids deposition, macrophage and lymphocyte infiltration in plaques, and gene expression of adhesion molecules in aortas.
Conclusions:
E-selectin-targeting delivery of miR-146a and miR-181b inhibits atherosclerosis. These findings provide a novel delivery system for miR-based therapy of atherosclerosis.
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Affiliation(s)
- Shuangtao Ma
- Dept of Cardiovascular Sciences, Houston Methodist Rsch Institute, Houston, TX
| | - Xiao Yu Tian
- Dept of Cardiovascular Sciences, Houston Methodist Rsch Institute, Houston, TX
| | - Chaofeng Mu
- Dept of Nanomedicine, Houston Methodist Rsch Institute, Houston, TX
| | - Haifa Shen
- Dept of Nanomedicine, Houston Methodist Rsch Institute, Houston, TX
| | - Jean Bismuth
- Methodist DeBakey Heart & Vascular Cntr, Houston Methodist Hosp, Houston, TX
| | - Wing Tak Wong
- Dept of Cardiovascular Sciences, Houston Methodist Rsch Institute, Houston, TX
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28
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Ma S, Tian XY, Mu C, Shen H, Bismuth J, Wong WT. Targeted delivery of microRNAs by microparticles to inflamed endothelium ameliorates endothelial inflammation and atherosclerosis. FASEB J 2015. [DOI: 10.1096/fasebj.29.1_supplement.lb580] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Shuangtao Ma
- Department of Cardiovascular Sciences Houston Methodist Research InstituteHoustonTexasUnited States
| | - Xiao Yu Tian
- Department of Cardiovascular Sciences Houston Methodist Research InstituteHoustonTexasUnited States
| | - Chaofeng Mu
- Department of Nanomedicine Houston Methodist Research InstituteHoustonTexasUnited States
| | - Haifa Shen
- Department of Nanomedicine Houston Methodist Research InstituteHoustonTexasUnited States
| | - Jean Bismuth
- Methodist DeBakey Heart & Vascular Center Houston Methodist HospitalHoustonTexasUnited States
| | - Wing Tak Wong
- Department of Cardiovascular Sciences Houston Methodist Research InstituteHoustonTexasUnited States
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Huang Z, Mu C, Chen Y, Zhu Z, Chen C, Lan L, Xu Q, Zhao W, Chen G. Effects of dietary probiotic supplementation on LXRα and CYP7α1 gene expression, liver enzyme activities and fat metabolism in ducks. Br Poult Sci 2015; 56:218-24. [PMID: 25559164 DOI: 10.1080/00071668.2014.1000821] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
1. The objective of this study was to investigate the effects of dietary probiotic supplementation on liver X receptor alpha (LXRα) and cholesterol 7α-hydroxylase (CYP7α1) mRNA levels, protein enzymatic activities and fat metabolism in Cherry Valley Pekin ducks. 2. A total of 750 one-day-old Cherry Valley Pekin ducks were randomly divided into 5 groups with three replicates of 50 ducks each in a completely randomised experiment. Each group was fed on a basal diet supplemented with 0, 500, 1000, 1500 or 2000 mg probiotics/kg. 3. Body rate and feed conversion ratio were highest and abdominal subcutaneous fat % was lowest at 1000 mg probiotic/kg. 4. The mRNA levels of LXRα and CYP7α1 in liver tissue was estimated by RT-PCR; serum triglyceride (TG) and total cholesterol (TC) concentrations were measured by ELISA. 5. The expression levels and enzyme activity of LXRα and CYP7α1 increased in conjunction with decreases in TG and TC concentrations following probiotic supplementation to a maximum at 1000 mg probiotics/kg and decreased thereafter. 6. It is concluded that dietary probiotics can enhance LXRα and CYP7α1 enzyme activities in the liver and reduce lipid concentrations and fat deposition in ducks.
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Affiliation(s)
- Z Huang
- a Jiangsu Key Laboratory for Animal Genetic, Breeding and Molecular Design , Yangzhou University , Yangzhou 225009 , Jiangsu , China
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30
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Martins AH, Hu J, Xu Z, Mu C, Alvarez P, Ford BD, El Sayed K, Eterovic VA, Ferchmin PA, Hao J. Neuroprotective activity of (1S,2E,4R,6R,-7E,11E)-2,7,11-cembratriene-4,6-diol (4R) in vitro and in vivo in rodent models of brain ischemia. Neuroscience 2015; 291:250-259. [PMID: 25677097 DOI: 10.1016/j.neuroscience.2015.02.001] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2014] [Revised: 01/15/2015] [Accepted: 02/02/2015] [Indexed: 01/25/2023]
Abstract
(1S,2E,4R,6R,-7E,11E)-2,7,11-cembratriene-4,6-diol (4R) is a precursor to key flavor ingredients in leaves of Nicotiana species. The present study shows 4R decreased brain damage in rodent ischemic stroke models. The 4R-pretreated mice had lower infarct volumes (26.2±9.7 mm3) than those in control groups (untreated: 63.4±4.2 mm3, DMSO: 60.2±14.2 mm3). The 4R-posttreated rats also had less infarct volumes (120±65 mm3) than those in the rats of the DMSO group (291±95 mm3). The results from in vitro experiments indicate that 4R decreased neuro2a cell (neuroblastoma cells) apoptosis induced by oxygen-glucose deprivation (OGD), and improved the population spikes' (PSs) recovery in rat acute hippocampal slices under OGD; a phosphatidylinositol 3-kinase (PI3K) inhibitor, wortmannin, abolished the effect of 4R on PSs recovery. Furthermore, 4R also inhibited monocyte adhesion to murine brain-derived endothelial (bEND5) cells and upregulation of intercellular adhesion molecule-1(ICAM-1) induced by OGD/reoxygenation (OGD/R), and restored the p-Akt level to pre-OGD/R values in bEND5 cells. In conclusion, the present study indicates that 4R has a protective effect in rodent ischemic stroke models. Inhibition of ICAM-1 expression and restoration of Akt phosphorylation are the possible mechanisms involved in cellular protection by 4R.
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Affiliation(s)
- Antonio H Martins
- Department of Biochemistry, Universidad Central del Caribe. Ave. Laurel #100, Santa Juanita, Bayamon, Puerto Rico, 00956
| | - Jing Hu
- Division of Pharmaceutical Sciences, James L. Winkle College of Pharmacy, University of Cincinnati, Cincinnati, OH 45267
| | - Zhenfeng Xu
- Department of Neurobiology, Neuroscience Institute, Morehouse School of Medicine, Atlanta, Georgia 30310
| | - Chaofeng Mu
- Division of Pharmaceutical Sciences, James L. Winkle College of Pharmacy, University of Cincinnati, Cincinnati, OH 45267
| | - Paloma Alvarez
- Department of Biochemistry, Universidad Central del Caribe. Ave. Laurel #100, Santa Juanita, Bayamon, Puerto Rico, 00956
| | - Byron D Ford
- Department of Neurobiology, Neuroscience Institute, Morehouse School of Medicine, Atlanta, Georgia 30310
| | - Khalid El Sayed
- Department of Basic Pharmaceutical Sciences, School of Pharmacy, University of Louisiana at Monroe. 1800 Bienville Drive, Monroe, LA 71201
| | - Vesna A Eterovic
- Department of Biochemistry, Universidad Central del Caribe. Ave. Laurel #100, Santa Juanita, Bayamon, Puerto Rico, 00956
| | - Pedro A Ferchmin
- Department of Biochemistry, Universidad Central del Caribe. Ave. Laurel #100, Santa Juanita, Bayamon, Puerto Rico, 00956
| | - Jiukuan Hao
- Division of Pharmaceutical Sciences, James L. Winkle College of Pharmacy, University of Cincinnati, Cincinnati, OH 45267
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31
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Abstract
Bio-inspired laminated graphite nanosheets/copper composites with modified mechanical properties.
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Affiliation(s)
- P. Wang
- Shanghai Hiwave Advanced Materials Technology Co., Ltd
- Shanghai 200240
- P. R. China
| | - W. Liu
- Shanghai Hiwave Advanced Materials Technology Co., Ltd
- Shanghai 200240
- P. R. China
| | - L. Chen
- Shanghai Hiwave Advanced Materials Technology Co., Ltd
- Shanghai 200240
- P. R. China
| | - C. Mu
- Wenzhou Hongfeng Electrical Alloy Co., Ltd
- Wenzhou 325603
- P. R. China
| | - G. Qi
- Wenzhou Hongfeng Electrical Alloy Co., Ltd
- Wenzhou 325603
- P. R. China
| | - F. Bian
- Shanghai Synchrotron Radiation Facility
- Shanghai Institute of Applied Physics Chinese Academy of Sciences
- Shanghai 201204
- P. R. China
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32
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Khalid A, Wolfram J, Mu C, Mai J, Yang Z, Wang F, Zhao Y, Ferrari M, Ma X, Yang Y, Shen H. Recent Advances in Discovering the Role of CCL5 in Metastatic Breast Cancer. Mini Rev Med Chem 2015; 15:1063-72. [PMID: 26420723 PMCID: PMC4968951 DOI: 10.2174/138955751513150923094709] [Citation(s) in RCA: 46] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2015] [Revised: 06/21/2015] [Accepted: 06/23/2015] [Indexed: 11/22/2022]
Abstract
A variety of therapeutic strategies are currently under investigation to inhibit factors that promote tumor invasion, as metastasis is the most common cause of mortality for cancer patients. Notably, considerable emphasis has been placed on studying metastasis as a dynamic process that is highly dependent on the tumor microenvironment. In regards to breast cancer, chemokine C-C motif ligand 5 (CCL5), which is produced by tumor-associated stromal cells, has been established as an important contributor to metastatic disease. This review summarizes recent discoveries uncovering the role of this chemokine in breast cancer metastasis, including conditions that increase the generation of CCL5 and effects induced by this signaling pathway. In particular, CCL-5-mediated cancer cell migration and invasion are discussed in the context of intertwined feedback loops between breast cancer cells and stromal cells. Moreover, the potential use of CCL5 and its receptor chemokine C-C motif receptor 5 (CCR5) as targets for preventing breast cancer metastasis is also reviewed.
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Affiliation(s)
- Ayesha Khalid
- Department of Nanomedicine, Houston Methodist Research Institute, Houston, TX 77030, USA
- Medical Program, Weill Cornell Medical College in Qatar, Qatar Foundation, Doha, Qatar
| | - Joy Wolfram
- Department of Nanomedicine, Houston Methodist Research Institute, Houston, TX 77030, USA
- CAS Key Laboratory for Biomedical Effects of Nanomaterials & Nanosafety, National Center for Nanoscience & Technology of China, Beijing 100190, China
| | - Chaofeng Mu
- Department of Nanomedicine, Houston Methodist Research Institute, Houston, TX 77030, USA
| | - Junhua Mai
- Department of Nanomedicine, Houston Methodist Research Institute, Houston, TX 77030, USA
| | - Zhizhou Yang
- Department of Nanomedicine, Houston Methodist Research Institute, Houston, TX 77030, USA
- Department of Emergency Medicine, Jinling Hospital, Medical School of Nanjing University, Nanjing, 210002, People’s Republic of China
| | - Feng Wang
- Department of Nanomedicine, Houston Methodist Research Institute, Houston, TX 77030, USA
- Department of Gastroenterology, The Tenth People’s Hospital of Shanghai, Tongji University, Shanghai 200072, People’s Republic of China
| | - Yuliang Zhao
- CAS Key Laboratory for Biomedical Effects of Nanomaterials & Nanosafety, National Center for Nanoscience & Technology of China, Beijing 100190, China
- Institute of High Energy Physics, Chinese Academy of Sciences (CAS), Beijing 100049, China
| | - Mauro Ferrari
- Department of Nanomedicine, Houston Methodist Research Institute, Houston, TX 77030, USA
- Department of Medicine, Weill Cornell Medical College, New York, NY 10065, USA
| | - Xiaojing Ma
- Department of Microbiology and Immunology, Weill Cornell Medical College, 1300 York Avenue, New York, NY 10065, USA
| | - Yong Yang
- Department of Nanomedicine, Houston Methodist Research Institute, Houston, TX 77030, USA
| | - Haifa Shen
- Department of Nanomedicine, Houston Methodist Research Institute, Houston, TX 77030, USA
- Department of Cell and Developmental Biology, Weill Cornell Medical College, New York, NY 10065, USA
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33
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Shen J, Kim HC, Mu C, Gentile E, Mai J, Wolfram J, Ji LN, Ferrari M, Mao ZW, Shen H. Multifunctional gold nanorods for siRNA gene silencing and photothermal therapy. Adv Healthc Mater 2014; 3:1629-37. [PMID: 24692076 DOI: 10.1002/adhm.201400103] [Citation(s) in RCA: 81] [Impact Index Per Article: 8.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2014] [Revised: 03/05/2014] [Indexed: 11/08/2022]
Abstract
Cancer is a complex disease that usually requires several treatment modalities. A multifunctional nanotherapeutic system is designed, incorporating small interfering RNA (siRNA) and gold nanorods (Au NRs) for photothermal therapy. Surface-engineered Au NRs with polyethylenimine are synthesized using a layer-by-layer assembly and siRNA is absorbed on the surface. The siRNA is efficiently delivered into breast cancer cells, resulting in subsequent gene silencing. Cells are then irradiated with near-infrared (NIR) light, causing heat-induced anticancer activity. The combination of gene silencing and photothermal therapy results in effective inhibition of cell proliferation.
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Affiliation(s)
- Jianliang Shen
- MOE Laboratory of Bioinorganic and Synthetic Chemistry; School of Chemistry and Chemical Engineering; Sun Yat-sen University; Guangzhou 510275 China
- Department of Nanomedicine; Houston Methodist Research Institute; Houston 77030 USA
| | - Han-Cheon Kim
- Department of Nanomedicine; Houston Methodist Research Institute; Houston 77030 USA
| | - Chaofeng Mu
- Department of Nanomedicine; Houston Methodist Research Institute; Houston 77030 USA
| | - Emanuela Gentile
- Department of Nanomedicine; Houston Methodist Research Institute; Houston 77030 USA
| | - Junhua Mai
- Department of Nanomedicine; Houston Methodist Research Institute; Houston 77030 USA
| | - Joy Wolfram
- Department of Nanomedicine; Houston Methodist Research Institute; Houston 77030 USA
| | - Liang-nian Ji
- MOE Laboratory of Bioinorganic and Synthetic Chemistry; School of Chemistry and Chemical Engineering; Sun Yat-sen University; Guangzhou 510275 China
| | - Mauro Ferrari
- Department of Nanomedicine; Houston Methodist Research Institute; Houston 77030 USA
- Department of Medicine; Weill Cornell Medical College; New York 10065 USA
| | - Zong-wan Mao
- MOE Laboratory of Bioinorganic and Synthetic Chemistry; School of Chemistry and Chemical Engineering; Sun Yat-sen University; Guangzhou 510275 China
| | - Haifa Shen
- Department of Nanomedicine; Houston Methodist Research Institute; Houston 77030 USA
- Department of Cell and Developmental Biology; Weill Cornell Medical College; New York 10065 USA
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Mai J, Huang Y, Mu C, Zhang G, Xu R, Guo X, Xia X, Volk DE, Lokesh GL, Thiviyanathan V, Gorenstein DG, Liu X, Ferrari M, Shen H. Bone marrow endothelium-targeted therapeutics for metastatic breast cancer. J Control Release 2014; 187:22-9. [PMID: 24818768 DOI: 10.1016/j.jconrel.2014.04.057] [Citation(s) in RCA: 46] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2014] [Revised: 04/29/2014] [Accepted: 04/30/2014] [Indexed: 12/31/2022]
Abstract
Effective treatment of cancer metastasis to the bone relies on bone marrow drug accumulation. The surface proteins in the bone marrow vascular endothelium provide docking sites for targeted drug delivery. We have developed a thioaptamer that specifically binds to E-selectin that is overexpressed in the vasculature of tumor and inflammatory tissues. In this study, we tested targeted delivery of therapeutic siRNA loaded in the E-selectin thioaptamer-conjugated multistage vector (ESTA-MSV) drug carrier to bone marrow for the treatment of breast cancer bone metastasis. We evaluated tumor type- and tumor growth stage-dependent targeting in mice bearing metastatic breast cancer in the bone, and carried out studies to identify factors that determine targeting efficiency. In a subsequent study, we delivered siRNA to knock down expression of the human STAT3 gene in murine xenograft models of human MDA-MB-231 breast tumor, and assessed therapeutic efficacy. Our studies revealed that the CD31(+)E-selectin(+) population accounted for 20.8%, 26.4% and 29.9% of total endothelial cells respectively inside the femur of mice bearing early, middle and late stage metastatic MDA-MB-231 tumors. In comparison, the double positive cells remained at a basal level in mice with early stage MCF-7 tumors, and jumped to 23.9% and 28.2% when tumor growth progressed to middle and late stages. Accumulation of ESTA-MSV inside the bone marrow correlated with the E-selectin expression pattern. There was up to 5-fold enrichment of the targeted MSV in the bone marrow of mice bearing early or late stage MDA-MB-231 tumors and of mice with late stage, but not early stage, MCF-7 tumors. Targeted delivery of STAT3 siRNA in ESTA-MSV resulted in knockdown of STAT3 expression in 48.7% of cancer cells inside the bone marrow. Weekly systemic administration of ESTA-MSV/STAT3 siRNA significantly extended survival of mice with MDA-MB-231 bone metastasis. In conclusion, targeting the overexpressed E-selectin provides an effective approach for tissue-specific drug delivery to the bone marrow. Tumor growth in the bone can be effectively inhibited by blockage of the STAT3 signaling.
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Affiliation(s)
- Junhua Mai
- Department of Nanomedicine, Houston Methodist Research Institute, 6670 Bertner Ave., Houston 77030, USA
| | - Yi Huang
- Department of Nanomedicine, Houston Methodist Research Institute, 6670 Bertner Ave., Houston 77030, USA; Biomedical Analysis Center, Third Military Medical University, Chongqing 400038, PR China
| | - Chaofeng Mu
- Department of Nanomedicine, Houston Methodist Research Institute, 6670 Bertner Ave., Houston 77030, USA
| | - Guodong Zhang
- Department of Nanomedicine, Houston Methodist Research Institute, 6670 Bertner Ave., Houston 77030, USA
| | - Rong Xu
- Department of Nanomedicine, Houston Methodist Research Institute, 6670 Bertner Ave., Houston 77030, USA
| | - Xiaojing Guo
- Department of Nanomedicine, Houston Methodist Research Institute, 6670 Bertner Ave., Houston 77030, USA; Department of Breast Cancer Pathology and Research Laboratory, Key Laboratory of Breast Cancer of Breast Cancer Prevention and Therapy, Tianjin Medical University Cancer Institute and Hospital, Tianjin 300060, PR China
| | - Xiaojun Xia
- Department of Nanomedicine, Houston Methodist Research Institute, 6670 Bertner Ave., Houston 77030, USA
| | - David E Volk
- Institute of Molecular Medicine, The University of Texas Health Science Center at Houston, 1825 Hermann Pressler, Houston 77030, USA
| | - Ganesh L Lokesh
- Institute of Molecular Medicine, The University of Texas Health Science Center at Houston, 1825 Hermann Pressler, Houston 77030, USA
| | - Varatharasa Thiviyanathan
- Institute of Molecular Medicine, The University of Texas Health Science Center at Houston, 1825 Hermann Pressler, Houston 77030, USA
| | - David G Gorenstein
- Institute of Molecular Medicine, The University of Texas Health Science Center at Houston, 1825 Hermann Pressler, Houston 77030, USA
| | - Xuewu Liu
- Department of Nanomedicine, Houston Methodist Research Institute, 6670 Bertner Ave., Houston 77030, USA
| | - Mauro Ferrari
- Department of Nanomedicine, Houston Methodist Research Institute, 6670 Bertner Ave., Houston 77030, USA; Department of Medicine, Weill Cornell Medical College, 1300 York Avenue, New York 10065, USA.
| | - Haifa Shen
- Department of Nanomedicine, Houston Methodist Research Institute, 6670 Bertner Ave., Houston 77030, USA; Department of Cell and Developmental Biology, Weill Cornell Medical College, 1300 York Avenue, New York 10065, USA.
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Yao C, Hu, Mu C. Mass production of function neutrophils from human hematopoietic stem cells by serum-free culture strategy. Cytotherapy 2014. [DOI: 10.1016/j.jcyt.2014.01.196] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Feng Y, Bian W, Mu C, Xu Y, Wang F, Qiao W, Huang Y. Establish and verify TSH reference intervals using optimized statistical method by analyzing laboratory-stored data. J Endocrinol Invest 2014; 37:277-84. [PMID: 24615364 DOI: 10.1007/s40618-013-0031-z] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/30/2013] [Accepted: 11/16/2013] [Indexed: 11/30/2022]
Abstract
OBJECTIVE To establish reference intervals using an optimized statistical method by collecting available laboratory data of thyroid stimulating hormone (TSH), and then to verify with the laboratory-present reference intervals. METHODS TSH RIs of the total population and different races, genders, age, source of sample are established through improved Hoffmann and Katayev's method with TSH test results data from Jan 2010 to April 2012 were collected, and finally conduct comparative verification with the laboratory present RIs. RESULTS According to the improved method, we get various RIs of different sample populations. On comparing with the laboratory current RI (0.270-4.200 mIU/L) most reference change values (RCV) were within acceptable limits. Only lower limit of Han male, Uygur male and out-patient male populations outwith acceptable limits. On excluding the different values, finally, the new RI by the optimized statistical method is 0.233-4.979 mIU/L. Because the new RI expanded the current RI and was not different from the current RI, it was indicated that new RI could be used to verify the laboratory current RIs and seen as the current RI's confidence interval (CI). INFERENCE TSH RIs established by optimized Hoffmann's and Katayev's methods is viable and can be used to verify RIs provided by manufacturers or other laboratories.
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Affiliation(s)
- Y Feng
- The Clinical Laboratory Center, The Tumor Hospital Affiliated to Xin Jiang Medical University, Urumqi, China
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Shen J, Kim HC, Su H, Wang F, Wolfram J, Kirui D, Mai J, Mu C, Ji LN, Mao ZW, Shen H. Cyclodextrin and polyethylenimine functionalized mesoporous silica nanoparticles for delivery of siRNA cancer therapeutics. Am J Cancer Res 2014; 4:487-97. [PMID: 24672582 PMCID: PMC3966054 DOI: 10.7150/thno.8263] [Citation(s) in RCA: 130] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2013] [Accepted: 01/20/2014] [Indexed: 12/26/2022] Open
Abstract
Effective delivery holds the key to successful in vivo application of therapeutic small interfering RNA (siRNA). In this work, we have developed a universal siRNA carrier consisting of a mesoporous silica nanoparticle (MSNP) functionalized with cyclodextrin-grafted polyethylenimine (CP). CP provides positive charge for loading of siRNA through electrostatic interaction and enables effective endosomal escape of siRNA. Using intravital microscopy we were able to monitor tumor enrichment of CP-MSNP/siRNA particles in live mice bearing orthotopic MDA-MB-231 xenograft tumors. CP-MSNP delivery of siRNA targeting the M2 isoform of the glycolytic enzyme pyruvate kinase (PKM2) resulted in effective knockdown of gene expression in vitro and in vivo. Suppression of PKM2 led to inhibition of tumor cell growth, invasion, and migration.
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Shen J, Xu R, Mai J, Kim HC, Guo X, Qin G, Yang Y, Wolfram J, Mu C, Xia X, Gu J, Liu X, Mao ZW, Ferrari M, Shen H. High capacity nanoporous silicon carrier for systemic delivery of gene silencing therapeutics. ACS Nano 2013; 7:9867-80. [PMID: 24131405 PMCID: PMC3868485 DOI: 10.1021/nn4035316] [Citation(s) in RCA: 86] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/17/2023]
Abstract
Gene silencing agents such as small interfering RNA (siRNA) and microRNA offer the promise to modulate expression of almost every gene for the treatment of human diseases including cancer. However, lack of vehicles for effective systemic delivery to the disease organs has greatly limited their in vivo applications. In this study, we developed a high capacity polycation-functionalized nanoporous silicon (PCPS) platform comprised of nanoporous silicon microparticles functionalized with arginine-polyethyleneimine inside the nanopores for effective delivery of gene silencing agents. Incubation of MDA-MB-231 human breast cancer cells with PCPS loaded with STAT3 siRNA (PCPS/STAT3) or GRP78 siRNA (PCPS/GRP78) resulted in 91 and 83% reduction of STAT3 and GRP78 gene expression in vitro. Treatment of cells with a microRNA-18a mimic in PCPS (PCPS/miR-18) knocked down 90% expression of the microRNA-18a target gene ATM. Systemic delivery of PCPS/STAT3 siRNA in murine model of MDA-MB-231 breast cancer enriched particles in tumor tissues and reduced STAT3 expression in cancer cells, causing significant reduction of cancer stem cells in the residual tumor tissue. At the therapeutic dosage, PCPS/STAT3 siRNA did not trigger acute immune response in FVB mice, including changes in serum cytokines, chemokines, and colony-stimulating factors. In addition, weekly dosing of PCPS/STAT3 siRNA for four weeks did not cause signs of subacute toxicity based on changes in body weight, hematology, blood chemistry, and major organ histology. Collectively, the results suggest that we have developed a safe vehicle for effective delivery of gene silencing agents.
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Affiliation(s)
- Jianliang Shen
- Department of Nanomedicine, The Methodist Hospital Research Institute, Houston, Texas 77030, United States
- MOE Key Laboratory of Bioinorganic and Synthetic Chemistry, School of Chemistry and Chemical Engineering, Sun Yat-sen University, Guangzhou, 510275, China
| | - Rong Xu
- Department of Nanomedicine, The Methodist Hospital Research Institute, Houston, Texas 77030, United States
| | - Junhua Mai
- Department of Nanomedicine, The Methodist Hospital Research Institute, Houston, Texas 77030, United States
| | - Han-Cheon Kim
- Department of Nanomedicine, The Methodist Hospital Research Institute, Houston, Texas 77030, United States
| | - Xiaojing Guo
- Department of Nanomedicine, The Methodist Hospital Research Institute, Houston, Texas 77030, United States
| | - Guoting Qin
- Department of Nanomedicine, The Methodist Hospital Research Institute, Houston, Texas 77030, United States
| | - Yong Yang
- Department of Nanomedicine, The Methodist Hospital Research Institute, Houston, Texas 77030, United States
| | - Joy Wolfram
- Department of Nanomedicine, The Methodist Hospital Research Institute, Houston, Texas 77030, United States
| | - Chaofeng Mu
- Department of Nanomedicine, The Methodist Hospital Research Institute, Houston, Texas 77030, United States
| | - Xiaojun Xia
- Department of Nanomedicine, The Methodist Hospital Research Institute, Houston, Texas 77030, United States
| | - Jianhua Gu
- Department of Nanomedicine, The Methodist Hospital Research Institute, Houston, Texas 77030, United States
| | - Xuewu Liu
- Department of Nanomedicine, The Methodist Hospital Research Institute, Houston, Texas 77030, United States
| | - Zong-Wan Mao
- MOE Key Laboratory of Bioinorganic and Synthetic Chemistry, School of Chemistry and Chemical Engineering, Sun Yat-sen University, Guangzhou, 510275, China
| | - Mauro Ferrari
- Department of Nanomedicine, The Methodist Hospital Research Institute, Houston, Texas 77030, United States
- Department of Medicine, Weill Cornell Medical College, New York, NY10065, United States
| | - Haifa Shen
- Department of Nanomedicine, The Methodist Hospital Research Institute, Houston, Texas 77030, United States
- Department of Cell and Developmental Biology, Weill Cornell Medical College, New York, NY10065, United States
- Address correspondence to
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Mu C, Dave N, Hu J, Desai P, Pauletti G, Bai S, Hao J. Solubilization of flurbiprofen into aptamer-modified PEG-PLA micelles for targeted delivery to brain-derived endothelial cells in vitro. J Microencapsul 2013; 30:701-8. [PMID: 23517066 DOI: 10.3109/02652048.2013.778907] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
Abstract
Novel aptamer-functionalized polyethylene glycol-polylactic acid (PEG-PLA) (APP) micelles were developed with the objective to target the transferrin receptor on brain endothelial cells. Flurbiprofen, a potential drug for therapeutic management of Alzheimer's disease (AD), was loaded into the APP micelles using the co-solvent evaporation method. Results indicated that 9.03% (w/w) of flurbiprofen was entrapped in APP with good retention capacity in vitro. Targeting potential of APPs was investigated using the transferring receptor-expressing murine brain endothelial bEND5 cell line. APPs significantly enhanced surface association of micelles to bEND5 cells as quantified by fluorescence spectroscopy. Most importantly, APPs significantly enhanced intracellular flurbiprofen delivery when compared to unmodified micelles. These results suggest that APP micelles may offer an effective strategy to deliver therapeutically effective flurbiprofen concentrations into the brain for AD patients.
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Affiliation(s)
- Chaofeng Mu
- Division of Pharmaceutical Sciences, James L. Winkle College of Pharmacy, University of Cincinnati , Cincinnati, OH , USA and
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Hu J, Mu C, Hao J. Cerebral ischemia reduces expression of Hs1-associated protein X-1 (Hax-1) in mouse brain. Neurosci Lett 2012; 534:338-43. [PMID: 23262083 DOI: 10.1016/j.neulet.2012.12.009] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2012] [Revised: 11/30/2012] [Accepted: 12/01/2012] [Indexed: 11/16/2022]
Abstract
Hax-1, a multi-functional protein, recently was found to be involved in apoptosis and nerve system development. The purpose of this study was to detect the effect of cerebral ischemia on Hax-1 expression. We have detected the expression of Hax-1 in normal brain tissue and in ischemic brain tissue. Hax-1 was expressed in all brain regions detected with a level similar to the level of β-actin. There were no differences in the expression of Hax-1 in different brain regions detected. The confocal images confirmed that neurons expressed Hax-1. The results of ischemic stroke in vivo indicated that Hax-1 level was significantly reduced at 24h after ischemia in the ischemic hemisphere, which was only 37%±4.8 of healthy hemisphere (p<0.05), and there was a strong reverse correlation between the level of Hax-1 and infarct size indicated by the regress analysis (R(2)=0.84). The expression of Hax-1 was also reduced in the cells subjected to oxygen/glucose deprivation (OGD) (p<0.01). The expression of Hax-1 was 87%±4.6, 78%±4.9 and 54%±8.2 of control in the murine brain endothelial cell (bEND5 cell) at 1h, 2h and 16h OGD, respectively. The Hax-1 level was 82%±7.3 and 61%±8.1 of control in neuronal cell line (neuro-2a cells) at 5h and 12h OGD, respectively. The percentage of neuro-2a cell death was 40%±11 induced by a 5h of OGD compared to only 10%±4.2 cell death in the control group (p<0.01). Our present study provides preliminary evidence of the effect of cerebral ischemia on Hax-1 expression. The expression of Hax-1 in normal brain tissue and reduction of Hax-1 in ischemic brain tissue indicate its possible involvement in pathophysiological functions in the brain.
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Affiliation(s)
- Jing Hu
- Division of Pharmaceutical Sciences, James L. Winkle College of Pharmacy, University of Cincinnati, Cincinnati, OH 45267, USA
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Wang M, Wang L, Zhou Z, Gao Y, Wang L, Shi X, Gai Y, Mu C, Song L. The molecular characterization of a catalase from Chinese mitten crabEriocheir sinensis. Int J Immunogenet 2012; 40:230-40. [DOI: 10.1111/iji.12019] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2011] [Revised: 02/23/2012] [Accepted: 10/18/2012] [Indexed: 11/29/2022]
Affiliation(s)
- M. Wang
- Key Laboratory of Experimental Marine Biology; Institute of Oceanology; Chinese Academy of Sciences; Qingdao; China
| | - L. Wang
- Key Laboratory of Experimental Marine Biology; Institute of Oceanology; Chinese Academy of Sciences; Qingdao; China
| | | | | | | | | | - Y. Gai
- Key Laboratory of Experimental Marine Biology; Institute of Oceanology; Chinese Academy of Sciences; Qingdao; China
| | - C. Mu
- Key Laboratory of Experimental Marine Biology; Institute of Oceanology; Chinese Academy of Sciences; Qingdao; China
| | - L. Song
- Key Laboratory of Experimental Marine Biology; Institute of Oceanology; Chinese Academy of Sciences; Qingdao; China
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Abstract
New methodology is important to the advancement of biomedical science. We recently described a polymorphism within exon IV of the ERCC1 gene, which is associated with an approximate 50% decrease in codon usage in some biological systems. In this report we show that this polymorphism can be readily demonstrated by standard manual DNA sequencing, and by a recently developed methodology which relies on spectrophotometric principles. The major advantage of this new methodology is that several-fold more samples can be assessed per unit time, at reduced cost.
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Affiliation(s)
- J Yu
- NCI,MED OVARIAN CANC SECT,MED BRANCH,DEV THERAPEUT DEPT,DIV CLIN SCI,BETHESDA,MD 20892
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Yu J, Dabholkar M, Bennett W, Welsh J, Mu C, Bostickbruton F, Reed E. Platinum-sensitive and platinum-resistant ovarian cancer tissues show differences in the relationships between mRNA levels of p53, ERCC1 and XPA. Int J Oncol 2012; 8:313-7. [PMID: 21544361 DOI: 10.3892/ijo.8.2.313] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
Abstract
We investigated the association between p53 mRNA expression and clinically relevant surrogates of nucleotide excision repair (ERCC1 and XPA) in 28 ovarian cancer specimens. We observed that platinum-resistant tumors showed higher mRNA levels of p53, ERCC1, and XPA than platinum-sensitive tumors; mRNA expression patterns in responders differed substantially from nonresponders; and p53 expression showed a strong correlation with the expression of ERCC1, and of XPA in platinum-sensitive tumor tissues, but not with platinum-resistant tumors. 47% of the mutations from p53 sequence analysis were not related to clinical response to chemotherapy. We conclude that the p53 influence on DNA repair in human malignancy may vary substantially from tumor to tumor, and that such differences are not necessarily related to the mutational status of p53.
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Affiliation(s)
- J Yu
- NCI,DIV CANC TREATMENT,CLIN PHARMACOL BRANCH,MED OVARIAN CANC SECT,BETHESDA,MD 20892. NCI,DIV CANC ETIOL,HUMAN CARCINOGENESIS LAB,BETHESDA,MD 20892
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Mu C, Jia P, Yan Z, Liu X, Li X, Liu H. Quercetin induces cell-cycle G1 arrest through elevating Cdk inhibitors p21 and p27 in human hepatoma cell line (HepG2). ACTA ACUST UNITED AC 2007; 29:179-83. [PMID: 17520098 DOI: 10.1358/mf.2007.29.3.1092095] [Citation(s) in RCA: 55] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Abstract
Quercetin is a flavonoid ubiquitously found in nature. The therapeutic effect of quercetin on human hepatoma cell line (HepG2) was evaluated in this study. Various groups were incubated with different doses of quercetin for 12-, 24-, 48- and 72-h time duration and compared with control groups. Dose- and time-dependent inhibition in HepG2 proliferation was found with quercetin treatment. At 48 h of incubation, 61.78% of the cells were arrested at G(1) phase with 25 microM/l quercetin while 89.62% were arrested at G(1) phase with 50 microM/l quercetin. Furthermore, the results indicate that quercetin increased the content of Cdk inhibitor p21 protein, which was correlated with the elevation in p53 levels during 12 h of incubation. In addition, quercetin also increased the level of Cdk inhibitor p27 protein during 24 h of incubation. From our results it can be concluded that quercetin blocks cell cycle progression at G(1) phase and exerts its growth-inhibitory effect through the increase of Cdk inhibitors p21 and p27 and tumor suppressor p53 in HepG2.
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Affiliation(s)
- C Mu
- Institute of Cell Biology, Life Science School, Lanzhou University, Lanzhou, People's Republic of China
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Lewin PA, Mu C, Umchid S, Daryoush A, El-Sherif M. Acousto-optic, point receiver hydrophone probe for operation up to 100 MHz. Ultrasonics 2005; 43:815-21. [PMID: 16054665 DOI: 10.1016/j.ultras.2005.05.003] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/21/2005] [Revised: 04/30/2005] [Accepted: 05/26/2005] [Indexed: 05/03/2023]
Abstract
This work describes the results of initial evaluation of a wideband acousto-optic hydrophone probe designed to operate as point receiver in the frequency range up to 100 MHz. The hydrophone was implemented as a tapered fiber optic (FO) probe sensor with a tip diameter of approximately 7 microm. Such small physical dimensions of the sensor eliminate the need for spatial averaging corrections so that true pressure-time (p-t) waveforms can be faithfully recorded. The theoretical considerations that predicted the FO probe sensitivity to be equal to 4.3 mV/MPa are presented along with a brief description of the manufacturing process. The calibration results that verified the theoretically predicted sensitivity are also presented along with a brief description of the improvements being currently implemented to increase this sensitivity level by approximately 20 dB. The results of preliminary measurements indicate that the fiber optic probes will exhibit a uniform frequency response and a zero phase shift in the frequency range considered. These features might be very useful in rapid complex calibration i.e. determining both magnitude and phase response of other hydrophones by the substitution method. Also, because of their robust design and linearity, these fiber optic hydrophones could also meet the challenges posed by high intensity focused ultrasound (HIFU) and other therapeutic applications. Overall, the outcome of this work shows that when fully developed, the FO probes will be well suited for high frequency measurements of ultrasound fields and will be able to complement the data collected by the current finite aperture piezoelectric PVDF hydrophones.
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Affiliation(s)
- P A Lewin
- School of Biomedical Engineering Science and Health Systems and Department of Electrical and Computer Engineering, Drexel University, Philadelphia, PA 19014, USA.
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Abstract
Over the past 5 years, and especially within the last year, there has been a rapid expansion of vagus nerve stimulation (VNS)-related preclinical research, as well as clinical studies in indications other than epilepsy. The research advances in understanding VNS are occurring in the midst of a blossoming of other forms of therapeutic brain stimulation, such as electroconvulsive therapy (ECT), transcranial magnetic stimulation (TMS), and deep brain stimulation (DBS). In general, improved understanding of the neurobiological effects of VNS therapy as a function of the different use parameters (frequency, intensity, pulse width, duration, dose) is beginning to guide clinical use and help determine which diseases, in addition to epilepsy, VNS might treat.
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Affiliation(s)
- Mark S George
- 502 North, IOP, Department of Psychiatry, Medical University of South Carolina, 67 President Street, Charleston, SC 29425, USA
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Chen Y, Mu C, Intes X, Chance B. Signal-to-noise analysis for detection sensitivity of small absorbing heterogeneity in turbid media with single-source and dual-interfering-source. Opt Express 2001; 9:212-24. [PMID: 19421292 DOI: 10.1364/oe.9.000212] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/16/2023]
Abstract
Previous studies have suggested that the phased-array detection can achieve high sensitivity in detecting and localizing inhomogeneities embedded in turbid media by illuminating with dual interfering sources. In this paper, we analyze the sensitivity of single-source and dual-interfering-source (phased array) systems with signal-to-noise ratio criteria. Analytical solutions are presented to investigate the sensitivity of detection using different degrees of absorption perturbation by varying the size and contrast of the object under similar configurations for single- and dual-source systems. The results suggest that dual-source configuration can provide higher detection sensitivity. The relation between the amplitude and phase signals for both systems is also analyzed using a vector model. The results can be helpful for optimizing the experimental design by combining the advantages of both single- and dual-source systems in object detection and localization.
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Mu C, Han S, Luo J, Wang X. [Analysis of environmental gradient and community of forest-swamp ecotone in Changbai mountains]. Ying Yong Sheng Tai Xue Bao 2001; 12:1-7. [PMID: 11813409] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/23/2023]
Abstract
This paper discussed the change pattern between environmental gradients and community structure, productivity and plant diversity of forest-swamp ecotones, and the mechanism forming those community's traits, which could supply a theoretical basis for conserving and managing the biological resources of ecotonal communities. By setting up sample belts along the environmental gradients on three kinds of ecotones between forests and swamps in Changbai Mountains and through investigating initial data and establishing regression models, the authors studied the dynamic pattern of species composition, diameter class and age class of dominant species, plant diversity, community productivity of forest-swamp ecotone communities with environmental gradients. The results showed that the distribution patterns of community structure characteristics, plant diversity and community productivity were consistent with the changes of environmental gradients of forest-swamp ecotones. Along the environmental gradient from swamp to forest, the displace of dominant species happened, and the species number increased by positive exponent. The diameter distribution of trees decreased by inverse curve, and the age class of trees was suited to cubic distribution. The plant diversity increased by quadratic, and the community biomass increased by cubic power curve along the environmental gradients. The above-mentioned results suggested that the relationships between communities and environmental gradients were closely related.
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Affiliation(s)
- C Mu
- Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang 110016
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Li Q, Yu JJ, Mu C, Yunmbam MK, Slavsky D, Cross CL, Bostick-Bruton F, Reed E. Association between the level of ERCC-1 expression and the repair of cisplatin-induced DNA damage in human ovarian cancer cells. Anticancer Res 2000; 20:645-52. [PMID: 10810335] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/16/2023]
Abstract
Nucleotide excision repair (NER) is responsible for the repair of platinum-DNA lesions. ERCC-1 is a critical gene within the NER pathway, and cells without a functional ERCC-1 do not repair cisplatin-caused DNA damage. The present study was therefore designed to evaluate the relationship between the expression of ERCC-1 and the repair of cisplatin-induced DNA adducts in human ovarian cancer cells in vitro. One hour exposure of MCAS cells to cisplatin yielded an approximately two-fold increment in the levels of ERCC-1 mRNA and ERCC-1 protein, as determined, respectively, by Northern and Western blottings. In addition, nuclear run-on assay showed that ERCC-1 gene transcription rate was increased to about the same extent as steady-state ERCC-1 mRNA and protein, in response to cisplatin treatment. However, the levels of ERCC-1 mRNA, ERCC-1 protein, and ERCC-1 transcript in MCAS cells are two-fold lower than those in A2780/CP70 cells, as previously reported. Furthermore, the repair of cisplatin-DNA adducts in MCAS cells, as measured by atomic absorption spectrometry, is also nearly two-fold less than that in A2780/CP70 cells, indicating a strong association between the level of ERCC-1 expression and the activity of excision repair in these two human ovarian tumor cell lines. These results suggest that ERCC-1 may be a useful marker to monitor the repair of platinum-DNA damage in tumor cells, and further highlight that potential pharmacological approaches which specifically inhibit ERCC-1 expression may increase cellular sensitivity to cisplatin.
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Affiliation(s)
- Q Li
- Developmental Therapeutics Department, National Cancer Institute, National Institutes of Health, Bethesda, Maryland 20892, USA
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Yu JJ, Lee KB, Mu C, Li Q, Abernathy TV, Bostick-Bruton F, Reed E. Comparison of two human ovarian carcinoma cell lines (A2780/CP70 and MCAS) that are equally resistant to platinum, but differ at codon 118 of the ERCC1 gene. Int J Oncol 2000; 16:555-60. [PMID: 10675489 DOI: 10.3892/ijo.16.3.555] [Citation(s) in RCA: 61] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
Abstract
ERCC1 is an essential gene within the nucleotide excision repair process. We studied two human ovarian carcinoma cell lines for cisplatin resistance, which differed with respect to ERCC1. The A2780/CP70 cell line has been extensively studied previously, and has the wild-type ERCC1 sequence. The MCAS cell line has a recently described ERCC1 polymorphism at codon 118, which is associated with an approximate 50% reduction in codon usage. These cells did not differ with respect to p53 sequence nor p53 mRNA induction following cisplatin exposure. The induction of ERCC1 mRNA was markedly reduced in MCAS cells as compared to A2780/CP70 cells. At the IC50 cisplatin dose for each cell line, MCAS cells were less proficient at cisplatin-DNA adduct repair than A2780/CP70 cells. In absolute terms, A2780/CP70 cells repaired 3-fold as much adduct (2.7 pg/microgram DNA over 6 h vs 0.86 pg/microgram DNA); and when expressed in terms of the maximal DNA adduct load, A2780/CP70 cells repaired 50% more adduct than MCAS cells. MCAS cells had increased cytosolic inactivation of drug at the IC50 dose level, which has been previously suggested to be a compensatory cellular response for reduced DNA repair capacity. These data suggest the possibility that this specific ERCC1 polymorphism, may be associated with reduced DNA repair capacity in human ovarian cancer cells. This association may be effected through a reduction in peak production of ERCC1 mRNA, and a consequent reduction in the translation of ERCC1 mRNA into protein.
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Affiliation(s)
- J J Yu
- Medical Ovarian Cancer Section, Developmental Therapeutics Department, Medicine Branch, Division of Clinical Sciences, National Cancer Institute, Bethesda, MD 20892, USA
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