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Yao X, Liu Q, Zhao S, Cheng R, Liu C, Zhang G. Expression and Clinical Significance of MDM2 in Non-Functioning PitNETs. Medicina (Kaunas) 2023; 59. [PMID: 36837574 DOI: 10.3390/medicina59020373] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 01/04/2023] [Revised: 02/03/2023] [Accepted: 02/11/2023] [Indexed: 02/17/2023]
Abstract
Background and Objective: Non-functioning pituitary neuroendocrine tumors (NF-PitNETs) represent a heterogeneous tumor type that lacks effective medical treatment. MDM2, the main negative regulator of p53, binds to and forms a stable complex with p53 to regulate its activity. In this study, we measured the expression levels and role of MDM2 in non-functioning PitNET patients' combined clinical features and investigated the effect of etoposide on the cell bioactivity of the GT1-1 cell line in vivo and in vitro. Methods: RT-PCR and immunochemistry measured the expression levels and role of MDM2 in 103 NF-PitNET patients' combined clinical features. Cell proliferation, migration, colony and apoptosis experiments measured the effect of etoposide on the GT1-1 cell line in vivo and in vitro. Results: There was more invasive behavior (p = 0.013) in patients with high MDM2, who were also younger (p = 0.007), were more frequently female (p = 0.049) and had larger tumor sizes (p = 0.018) compared with patients with low MDM2. Patients with high p53 were younger (p = 0.017) and had larger tumor sizes (p = 0.034) compared with patients with low p53. Univariate (p = 0.018) and multivariate (p = 0.023) Cox regression analysis showed that MDM2 was the independent factor for invasive behavior in NF-PitNET patients. Log-rank analysis showed that the average progression-free survival (PFS) time in the low MDM2 patients was longer than that in the high MDM2 patients (p = 0.044). Functional studies indicated that etoposide inhibited cell proliferation and cell migration and induced apoptosis in p53 independence in GT1-1 cells. Furthermore, etoposide significantly inhibited the growth of GT1-1-xenograft in BALB/c nude mice. The tumor growth inhibition rate of etoposide was 67.4 ± 4.6% after 14 d of treatment, which suggested the anti-tumor activity of etoposide. Conclusions: MDM2 played the role of tumorigenesis of NF-PitNET in a p53 independence manner, and an MDM2 inhibitor could be a potential choice for the treatment of NF-PitNET patients.
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Chen S, Bi K, Wu S, Li Y, Huang Y, Sheng C, Dong G. Water-soluble derivatives of evodiamine: Discovery of evodiamine-10-phosphate as an orally active antitumor lead compound. Eur J Med Chem 2021; 220:113544. [PMID: 34052678 DOI: 10.1016/j.ejmech.2021.113544] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [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: 03/03/2021] [Revised: 04/26/2021] [Accepted: 05/09/2021] [Indexed: 10/21/2022]
Abstract
10-Hydroxyevodiamine is a multitargeting antitumor lead compound with excellent in vitro activity. However, its in vivo antitumor potency is rather limited, which has hampered its further clinical development. To overcome this obstacle, a series of novel water-soluble derivatives of 10-hydroxyevodiamine were designed and synthesized. Most of them exhibited good to excellent antitumor activities against several cancer cell lines. In particular, phosphate derivative 9 was orally active and showed improved in vivo antitumor efficacy in HCT116 xenograft models. Further antitumor mechanism studies indicated that compound 9 acted by triple Top1/Top2/tubulin inhibition and induced apoptosis with G2/M cell cycle arrest. Taken together, this study extended the structure-activity relationship of evodiamine and identified phosphate derivative 9 as a promising antitumor lead compound.
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Affiliation(s)
- Shuqiang Chen
- Department of Medicinal Chemistry, School of Pharmacy, Second Military Medical University, 325 Guohe Road, Shanghai, 200433, People's Republic of China
| | - Kaijian Bi
- Department of Medicinal Chemistry, School of Pharmacy, Second Military Medical University, 325 Guohe Road, Shanghai, 200433, People's Republic of China
| | - Shanchao Wu
- Department of Medicinal Chemistry, School of Pharmacy, Second Military Medical University, 325 Guohe Road, Shanghai, 200433, People's Republic of China
| | - Yu Li
- Department of Medicinal Chemistry, School of Pharmacy, Second Military Medical University, 325 Guohe Road, Shanghai, 200433, People's Republic of China
| | - Yahui Huang
- Department of Medicinal Chemistry, School of Pharmacy, Second Military Medical University, 325 Guohe Road, Shanghai, 200433, People's Republic of China
| | - Chunquan Sheng
- Department of Medicinal Chemistry, School of Pharmacy, Second Military Medical University, 325 Guohe Road, Shanghai, 200433, People's Republic of China.
| | - Guoqiang Dong
- Department of Medicinal Chemistry, School of Pharmacy, Second Military Medical University, 325 Guohe Road, Shanghai, 200433, People's Republic of China.
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Engelhard HH, Willis AJ, Hussain SI, Papavasiliou G, Banner DJ, Kwasnicki A, Lakka SS, Hwang S, Shokuhfar T, Morris SC, Liu B. Etoposide-Bound Magnetic Nanoparticles Designed for Remote Targeting of Cancer Cells Disseminated Within Cerebrospinal Fluid Pathways. Front Neurol 2020; 11:596632. [PMID: 33329349 PMCID: PMC7729165 DOI: 10.3389/fneur.2020.596632] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [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: 08/19/2020] [Accepted: 11/03/2020] [Indexed: 12/26/2022] Open
Abstract
Magnetic nanoparticles (MNPs) have potential for enhancing drug delivery in selected cancer patients, including those which have cells that have disseminated within cerebrospinal fluid (CSF) pathways. Here, we present data related to the creation and in vitro use of new two-part MNPs consisting of magnetic gold-iron alloy cores which have streptavidin binding sites, and are coated with biotinylated etoposide. Etoposide was chosen due to its previous use in the CSF and ease of biotinylation. Etoposide magnetic nanoparticles (“Etop-MNPs”) were characterized by several different methods, and moved at a distance by surface-walking of MNP clusters, which occurs in response to a rotating permanent magnet. Human cell lines including D283 (medulloblastoma), U138 (glioblastoma), and H2122 (lung adenocarcinoma) were treated with direct application of Etop-MNPs (and control particles), and after remote particle movement. Cell viability was determined by MTT assay and trypan blue exclusion. Results indicated that the biotinylated etoposide was successfully bound to the base MNPs, with the hybrid particle attaining a maximum velocity of 0.13 ± 0.018 cm/sec. Etop-MNPs killed cancer cells in a dose-dependent fashion, with 50 ± 6.8% cell killing of D283 cells (for example) with 24 h of treatment after remote targeting. U138 and H2122 cells were found to be even more susceptible to the killing effect of Etop-MNPs than D283 cells. These findings indicate that the novel Etop-MNPs have a cytotoxic effect, and can be moved relatively rapidly at physiologic distances, using a rotating magnet. While further testing is needed, intrathecal administration of Etop-MNPs holds promise for magnetically-enhanced eradication of cancer cells distributed within CSF pathways, particularly if given early in the course of the disease.
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Affiliation(s)
- Herbert H Engelhard
- Department of Neurosurgery, University of Illinois at Chicago, Chicago, IL, United States.,Department of Bioengineering University of Illinois at Chicago, Chicago, IL, United States
| | - Alexander J Willis
- Department of Neurosurgery, University of Illinois at Chicago, Chicago, IL, United States.,Department of Medicine, University of Illinois at Chicago, Chicago, IL, United States
| | - Syed I Hussain
- Department of Neurosurgery, University of Illinois at Chicago, Chicago, IL, United States.,Department of Biomedical Engineering, Illinois Institute of Technology, Chicago, IL, United States
| | - Georgia Papavasiliou
- Department of Biomedical Engineering, Illinois Institute of Technology, Chicago, IL, United States
| | - David J Banner
- Department of Bioengineering University of Illinois at Chicago, Chicago, IL, United States
| | - Amanda Kwasnicki
- Department of Neurosurgery, University of Illinois at Chicago, Chicago, IL, United States
| | - Sajani S Lakka
- Department of Medicine, University of Illinois at Chicago, Chicago, IL, United States
| | | | - Tolou Shokuhfar
- Department of Bioengineering University of Illinois at Chicago, Chicago, IL, United States
| | - Sean C Morris
- Pulse Therapeutics, Inc., St. Louis, MO, United States
| | - Bing Liu
- IMRA America, Inc., Ann Arbor, MI, United States
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Bai J, Tian Y, Liu F, Li X, Shao Y, Lu X, Wang J, Zhu G, Xue B, Liu M, Hu P, He N, Tang Q. Octreotide-Conjugated Core-Cross-Linked Micelles with pH/Redox Responsivity Loaded with Etoposide for Neuroendocrine Neoplasms Therapy and Bioimaging with Photoquenching Resistance. ACS Appl Mater Interfaces 2019; 11:18111-18122. [PMID: 31006230 DOI: 10.1021/acsami.9b01827] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
The study of multifunctional polymer micelles combined with chemotherapy due to reduced systemic toxicity and enhanced efficacy has attracted intensive attention. Herein, a multifunctional core-cross-linked hybrid micelle system based on mPEG- b-PGu(BA-TPE) and OCT-PEG- b-PGu(DA-TPE) with pH- and redox-triggered drug release and aggregation-induced emission (AIE) active imaging has been developed for active targeting of neuroendocrine neoplasms (NENs), especially neuroendocrine carcinomas (NECs) with poor prognosis. These micelles showed excellent biocompatibility and stability. After the formation of borate ester bonds, core-cross-linked micelles (CCLMs) showed enhanced emission properties. In addition, etoposide (ETO), one of the most important anticancer drugs of NECs, was loaded into the hydrophobic core of micelles by self-assembly with an average diameter of 274.6 nm and spherical morphology. Octreotide (OCT) conjugated onto the micelles enhanced cellular uptake by receptor-mediated endocytosis. ETO-loaded micelles demonstrated the dual-responsive triggered intracellular drug release and great tumor suppression ability in vitro. Compared with free ETO, ETO-loaded CCLMs exhibited a considerable antitumor effect and significantly reduced side effects. Considering the active tumor targeting, dual-responsive drug release and the AIE effect, the polymer micelle system will be a potential candidate for diagnosis and oncotherapy of NENs.
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Affiliation(s)
- Jianan Bai
- Department of Geriatric Gastroenterology , The First Affiliated Hospital with Nanjing Medical University , Nanjing 210029 , China
| | - Ye Tian
- Department of Geriatric Gastroenterology , The First Affiliated Hospital with Nanjing Medical University , Nanjing 210029 , China
| | - Fangzhou Liu
- Department of Head & Neck Surgery, Jiangsu Cancer Hospital & Jiangsu Institute of Cancer Research , The Affiliated Cancer Hospital of Nanjing Medical University , Nanjing 210029 , China
| | - Xiaolin Li
- Department of Geriatric Gastroenterology , The First Affiliated Hospital with Nanjing Medical University , Nanjing 210029 , China
| | - Yun Shao
- Department of Geriatric Gastroenterology , The First Affiliated Hospital with Nanjing Medical University , Nanjing 210029 , China
| | - Xintong Lu
- Department of Geriatric Gastroenterology , The First Affiliated Hospital with Nanjing Medical University , Nanjing 210029 , China
| | - Jintian Wang
- Department of Geriatric Gastroenterology , The First Affiliated Hospital with Nanjing Medical University , Nanjing 210029 , China
| | - Guoqin Zhu
- Department of Geriatric Gastroenterology , The First Affiliated Hospital with Nanjing Medical University , Nanjing 210029 , China
| | - Bingyan Xue
- Department of Geriatric Gastroenterology , The First Affiliated Hospital with Nanjing Medical University , Nanjing 210029 , China
| | - Min Liu
- Department of Geriatric Gastroenterology , The First Affiliated Hospital with Nanjing Medical University , Nanjing 210029 , China
| | - Ping Hu
- Department of Geriatric Gastroenterology , The First Affiliated Hospital with Nanjing Medical University , Nanjing 210029 , China
| | - Na He
- Department of Geriatric Gastroenterology , The First Affiliated Hospital with Nanjing Medical University , Nanjing 210029 , China
| | - Qiyun Tang
- Department of Geriatric Gastroenterology , The First Affiliated Hospital with Nanjing Medical University , Nanjing 210029 , China
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Zhang Y, Bush X, Yan B, Chen JA. Gemcitabine nanoparticles promote antitumor immunity against melanoma. Biomaterials 2018; 189:48-59. [PMID: 30388589 DOI: 10.1016/j.biomaterials.2018.10.022] [Citation(s) in RCA: 61] [Impact Index Per Article: 10.2] [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: 07/29/2018] [Revised: 10/17/2018] [Accepted: 10/19/2018] [Indexed: 01/06/2023]
Abstract
Myeloid-derived suppressor cells (MDSCs) promote tumor-mediated immunosuppression and cancer progression. Gemcitabine (Gem) is a MDSC-depleting chemotherapeutic agent; however, its clinical use is hampered by its drug resistance and inefficient in vivo delivery. Here we describe a strategy to formulate a Gem analogue gemcitabine monophosphate (GMP) into a lipid-coated calcium phosphate (LCP) nanoparticle, and investigate its antitumor immunity and therapeutic effects after systemic administrations. In the syngeneic mouse model of B16F10 melanoma, compared with free Gem, the LCP-formulated GMP (LCP-GMP) significantly induced apoptosis and reduced immunosuppression in the tumor microenvironment (TME). LCP-GMP effectively depleted MDSCs and regulatory T cells, and skewed macrophage polarization towards the antitumor M1 phenotype in the TME, leading to enhanced CD8+ T-cell immune response and profound tumor growth inhibition. Thus, engineering the in vivo delivery of MDSC-depleting agents using nanotechnology could substantially modulate immunosuppressive TME and boost T-cell immune response for enhanced antitumor efficacy.
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Affiliation(s)
- Yuan Zhang
- Department of Biomedical and Pharmaceutical Sciences, College of Pharmacy, University of Rhode Island, Kingston, RI 02881, USA.
| | - Xin Bush
- Department of Biomedical and Pharmaceutical Sciences, College of Pharmacy, University of Rhode Island, Kingston, RI 02881, USA
| | - Bingfang Yan
- James L. Winkle College of Pharmacy, University of Cincinnati, Cincinnati, OH 45267, USA
| | - Justin A Chen
- Department of Biomedical and Pharmaceutical Sciences, College of Pharmacy, University of Rhode Island, Kingston, RI 02881, USA
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Wang Z, Liang P, He X, Wu B, Liu Q, Xu Z, Wu H, Liu Z, Qian Y, Wang S, Zhu R. Etoposide loaded layered double hydroxide nanoparticles reversing chemoresistance and eradicating human glioma stem cells in vitro and in vivo. Nanoscale 2018; 10:13106-13121. [PMID: 29961791 DOI: 10.1039/c8nr02708k] [Citation(s) in RCA: 31] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Glioblastoma (GBM) is the most malignant and lethal glioma in human brain tumors and contains self-renewing, tumorigenic glioma stem cells (GSCs) that contribute to tumor initiation, therapeutic resistance and further recurrence. In this study, we combined in vitro cellular efficacy with in vivo antitumor performance to evaluate the outcome of an etoposide (VP16) loaded layered double hydroxide (LDH) nanocomposite (L-V) on human GSCs. The effects on GSC proliferation and apoptosis showed that loading with LDH could significantly sensitize GSCs to VP16 and enhance the GSC elimination. Further qPCR and western blot assays demonstrated that L-V could effectively attenuate GSC related pluripotency gene expression and reduce the cancer stemness. An in vivo GSC xenograft mice model showed that L-V can overcome drug resistance, eradicate GSCs, sharply decrease the stemness and reverse the epithelial-mesenchymal transition (EMT). RNA-seq analysis elucidated that L-V plays a vital role by down-regulating the PI3K/AKt/mTOR expression and activating the Wnt/GSK3β/β-catenin signaling pathway, hence leading to GSC stemness loss and greatly enhancing the GSC targeting effect. Taken together, this study demonstrated the outstanding performance of L-V reversing the drug resistance of GSCs, thus providing a novel strategy for clinical translation application of nanomedicine in malignant glioma chemotherapy.
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Affiliation(s)
- Zhaojie Wang
- Research Center for Translational Medicine at East Hospital, School of Life Science and Technology, Tongji University, Shanghai, People's Republic of China.
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Abstract
In recent years, lipid-coated calcium-phosphate (LCP) nanoparticle has been developed as a versatile platform for delivery of various therapeutics including gene, protein/peptide, chemotherapeutics and theranostic agents. The high endosomal escape, coupled with the ability to efficiently encapsulate phosphorylated drugs or prodrugs, make LCP become attractive vehicle for drug delivery. Additionally, the principle behind LCP formulation has also allowed rational design of LCP-derived nanoparticles (NPs) with other solid core or lipid membrane to overcome the various drug delivery barriers. Here, we briefly review the history of the development of LCP NPs, highlight the optimisations and modulations in the development process, and summarise the major applications of LCP NPs and LCP-derived NPs in drug delivery.
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Affiliation(s)
- Jia-Lin Huang
- a Department of Pharmacology and Chemical Biology, Faculty of Basic Medicine , Shanghai Jiao Tong University School of Medicine , Shanghai , PR China.,b Department of Neurological Surgery , Renji Hospital, Shanghai Jiao Tong University School of Medicine , Shanghai , PR China
| | - Hong-Zhuan Chen
- a Department of Pharmacology and Chemical Biology, Faculty of Basic Medicine , Shanghai Jiao Tong University School of Medicine , Shanghai , PR China
| | - Xiao-Ling Gao
- a Department of Pharmacology and Chemical Biology, Faculty of Basic Medicine , Shanghai Jiao Tong University School of Medicine , Shanghai , PR China
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Yuan F, Qiao L, Chen Y, Qi X, Liu Y, Li D, Gu Q, Li J, Liu M. AS1041, a Novel Synthesized Derivative of Marine Natural Compound Aspergiolide A, Arrests Cell Cycle, Induces Apoptosis, and Inhibits ERK Activation in K562 Cells. Mar Drugs 2017; 15:E346. [PMID: 29113054 DOI: 10.3390/md15110346] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [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: 10/09/2017] [Revised: 10/31/2017] [Accepted: 11/01/2017] [Indexed: 12/22/2022] Open
Abstract
AS1041 is a novel synthesized anthraquinone lactone derivative of marine natural compound aspergiolide A (ASP-A) with new structure skeleton and marked cytotoxicity in cancer cells. To study its cytotoxicity in detail, we evaluated its activity on human K562 chronic myelogenous leukemia cells and investigated the related molecule mechanisms. AS1041 significantly inhibited the proliferation and colony formation of K562 cells. Moreover, AS1041 arrested cell cycle progression at G2/M phase in a concentration-dependent manner, and also caused concentration- and time-dependent induction of apoptosis. In addition, the molecular mechanisms investigation showed that AS1041 did not localize in the cellular nucleus and did not affect topoisomerases I or II. However, AS1041 could inactivate extracellular signal-regulated kinase (ERK) and contribute to AS1041-induced apoptosis. We concluded that AS1041 was cytotoxic to K562 leukemia cells and the cytotoxicity related to the cell cycle arrest, apoptosis induction, and ERK inhibition. These results implied that AS1041 was a novel derivative of ASP-A with significant cytotoxicity to chronic myelogenous leukemia cells and may have therapeutic potential for the treatment of cancer and leukemia.
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Abstract
Nanoparticle drug formulations have been extensively investigated, developed, and in some cases, approved by the Food and Drug Administration (FDA). Synergistic combinations of drugs having distinct tumor-inhibiting mechanisms and non-overlapping toxicity can circumvent the issue of treatment resistance and may be essential for effective anti-cancer therapy. At the same time, co-delivery of a combined regimen by a single nanocarrier presents a challenge due to differences in solubility, molecular weight, functional groups and encapsulation conditions between the two drugs. This review discusses cellular and microenvironment mechanisms behind treatment resistance and nanotechnology-based solutions for effective anti-cancer therapy. Co-loading or cascade delivery of multiple drugs using of polymeric nanoparticles, polymer-drug conjugates and lipid nanoparticles will be discussed along with lipid-coated drug nanoparticles developed by our lab and perspectives on combination therapy.
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Affiliation(s)
- Lei Miao
- Division of Pharmacoengineering and Molecular Pharmaceutics, and Center for Nanotechnology in Drug Delivery, Eshelman School of Pharmacy, University of North Carolina at Chapel Hill, Chapel Hill, NC 27599, USA; David H. Koch Institute for Integrative Cancer Research, Massachusetts Institute of Technology, Cambridge, MA 02139, USA
| | - Shutao Guo
- Division of Pharmacoengineering and Molecular Pharmaceutics, and Center for Nanotechnology in Drug Delivery, Eshelman School of Pharmacy, University of North Carolina at Chapel Hill, Chapel Hill, NC 27599, USA; Key Laboratory of Functional Polymer Materials, Ministry of Education, Institute of Polymer Chemistry, College of Chemistry, State Key Laboratory of Medicinal Chemical Biology, Nankai University, Tianjin 300071, China
| | - C Michael Lin
- Division of Pharmacoengineering and Molecular Pharmaceutics, and Center for Nanotechnology in Drug Delivery, Eshelman School of Pharmacy, University of North Carolina at Chapel Hill, Chapel Hill, NC 27599, USA
| | - Qi Liu
- Division of Pharmacoengineering and Molecular Pharmaceutics, and Center for Nanotechnology in Drug Delivery, Eshelman School of Pharmacy, University of North Carolina at Chapel Hill, Chapel Hill, NC 27599, USA
| | - Leaf Huang
- Division of Pharmacoengineering and Molecular Pharmaceutics, and Center for Nanotechnology in Drug Delivery, Eshelman School of Pharmacy, University of North Carolina at Chapel Hill, Chapel Hill, NC 27599, USA.
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Tsend-Ayush A, Zhu X, Ding Y, Yao J, Yin L, Zhou J, Yao J. Lactobionic acid-conjugated TPGS nanoparticles for enhancing therapeutic efficacy of etoposide against hepatocellular carcinoma. Nanotechnology 2017; 28:195602. [PMID: 28291743 DOI: 10.1088/1361-6528/aa66ba] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
Many effective anti-cancer drugs have limited use in hepatocellular carcinoma (HCC) therapy due to the drug resistance mechanisms in liver cells. In recent years, tumor-targeted drug delivery and the inhibition of drug-resistance-related mechanisms has become an integrated strategy for effectively combating chemo-resistant cancer. Herein, lactobionic acid-conjugated d-α-tocopheryl polyethylene glycol 1000 succinate (TPGS-LA conjugate) has been developed as a potential asialoglycoprotein receptor (ASGPR)-targeted nanocarrier and an efficient inhibitor of P-glycoprotein (P-gp) to enhance etoposide (ETO) efficacy against HCC. The main properties of ETO-loaded TPGS-LA nanoparticles (NPs) were tested through in vitro and in vivo studies after being prepared using the nanoprecipitation method and characterized by dynamic light scattering (DLS). According to the results, smaller (∼141.43 nm), positively charged ETO-loaded TPGS-LA NPs were more suitable for providing efficient delivery to hepatoma cells by avoiding the clearance mechanisms. It was found that ETO-loaded TPGS-LA NPs were noticeably able to enhance the cytotoxicity of ETO in HepG2 cells. Besides this, markedly higher internalization by the ASGPR-overexpressed HepG2 cells and efficient accumulation at the tumor site in vivo were revealed in the TPGS-LA NP group. More importantly, animal studies confirmed that ETO-loaded TPGS-LA NPs achieved the highest therapeutic efficacy against HCC. Interestingly, ETO-loaded TPGS-LA NPs also exhibited a great inhibitory effect on P-gp compared to the ETO-loaded TPGS NPs. These results suggest that TPGS-LA NPs could be used as a potential ETO delivery system against HCC.
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Affiliation(s)
- Altansukh Tsend-Ayush
- State Key Laboratory of Natural Medicines, Department of Pharmaceutics, China Pharmaceutical University, 24 Tongjiaxiang, Nanjing 210009, People's Republic of China
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Ong SM, Saeki K, Tanaka Y, Nishimura R, Nakagawa T. Effects of etoposide alone and in combination with piroxicam on canine osteosarcoma cell lines. Vet J 2016; 218:51-59. [PMID: 27938709 DOI: 10.1016/j.tvjl.2016.11.007] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [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: 05/01/2016] [Revised: 09/21/2016] [Accepted: 11/15/2016] [Indexed: 12/21/2022]
Abstract
Osteosarcoma (OSA) is the most common primary bone tumour in dogs. The poor survival rate in dogs with OSA highlights the need for new therapeutic approaches. This study evaluated the cytotoxic effects of etoposide, alone and in combination with piroxicam, on canine OSA cell cultures. Etoposide alone significantly suppressed cell growth and viability, whereas etoposide in combination with piroxicam exhibited concentration dependent cytotoxicity. The anti-proliferative effect was a result of inactivity of the Cdc2-cyclin B1 complex, which correlated with an increase in the G2/M fraction. This subsequently activated the apoptosis cascade, as indicated by elevated apoptosis levels and up-regulation of poly (ADP-ribose) polymerase proteolytic cleavage. Down-regulation of survivin expression induced by the combination treatment may have contributed to the enhanced cytotoxicity. The results of this study suggest that further investigation of etoposide and piroxicam as a therapeutic combination for canine OSA is warranted.
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Affiliation(s)
- S M Ong
- Laboratory of Veterinary Surgery, Graduate School of Agricultural and Life Sciences, The University of Tokyo, 1-1-1, Yayoi, Bunkyo-ku, Tokyo 113-8657, Japan
| | - K Saeki
- Laboratory of Veterinary Surgery, Graduate School of Agricultural and Life Sciences, The University of Tokyo, 1-1-1, Yayoi, Bunkyo-ku, Tokyo 113-8657, Japan
| | - Y Tanaka
- Laboratory of Veterinary Surgery, Graduate School of Agricultural and Life Sciences, The University of Tokyo, 1-1-1, Yayoi, Bunkyo-ku, Tokyo 113-8657, Japan
| | - R Nishimura
- Laboratory of Veterinary Surgery, Graduate School of Agricultural and Life Sciences, The University of Tokyo, 1-1-1, Yayoi, Bunkyo-ku, Tokyo 113-8657, Japan
| | - T Nakagawa
- Laboratory of Veterinary Surgery, Graduate School of Agricultural and Life Sciences, The University of Tokyo, 1-1-1, Yayoi, Bunkyo-ku, Tokyo 113-8657, Japan.
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Wang J, Zhao H, Zhou Z, Zhou P, Yan Y, Wang M, Yang H, Zhang Y, Yang S. MR/SPECT Imaging Guided Photothermal Therapy of Tumor-Targeting Fe@Fe3O4 Nanoparticles in Vivo with Low Mononuclear Phagocyte Uptake. ACS Appl Mater Interfaces 2016; 8:19872-19882. [PMID: 27428929 DOI: 10.1021/acsami.6b04639] [Citation(s) in RCA: 44] [Impact Index Per Article: 5.5] [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: 06/06/2023]
Abstract
The (125)I-c(RGDyK) peptide PEGylated Fe@Fe3O4 nanoparticles ((125)I-RGD-PEG-MNPs) with the average hydrodynamic diameter of ∼40 nm as a novel multifunctional platform were developed for tumor-targeting MR/SPECT imaging guided photothermal therapy in vivo. On the αvβ3-positive U87MG glioblastoma xenograft model, the signals of tumor from T2-weighted MR and SPECT imaging were much higher than those in the blocking group at 6 h post injection (p.i.) of RGD-PEG-MNPs and (125)I-RGD-PEG-MNPs intravenously, respectively. The pharmacokinetics and biodistribution were analyzed quantitatively by gamma counter ex vivo. The fact suggested that RGD-PEG-MNPs exhibited excellent targeting property and low mononuclear phagocyte uptake. At 6 h p.i. for (125)I-RGD-PEG-MNPs, the maximum uptake of 6.75 ± 1.24% of the percentage injected dose per gram (ID/g) was accumulated in the tumor. At 48 h p.i., only 1.11 ± 0.21% and 0.16 ± 0.09% ID/g were accumulated in the liver and spleen, respectively. With the guidance of MR/SPECT imaging, the multifunctional nanoparticles achieved a good photothermal therapeutic efficacy in vivo.
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Affiliation(s)
- Jing Wang
- The Key Laboratory of Resource Chemistry of Ministry of Education, Shanghai Key Laboratory of Rare Earth Functional Materials, and Shanghai Municipal Education Committee Key Laboratory of Molecular Imaging Probes and Sensors, Shanghai Normal University , Shanghai 200234, China
| | - Heng Zhao
- The Key Laboratory of Resource Chemistry of Ministry of Education, Shanghai Key Laboratory of Rare Earth Functional Materials, and Shanghai Municipal Education Committee Key Laboratory of Molecular Imaging Probes and Sensors, Shanghai Normal University , Shanghai 200234, China
| | - Zhiguo Zhou
- The Key Laboratory of Resource Chemistry of Ministry of Education, Shanghai Key Laboratory of Rare Earth Functional Materials, and Shanghai Municipal Education Committee Key Laboratory of Molecular Imaging Probes and Sensors, Shanghai Normal University , Shanghai 200234, China
| | - Ping Zhou
- The Key Laboratory of Resource Chemistry of Ministry of Education, Shanghai Key Laboratory of Rare Earth Functional Materials, and Shanghai Municipal Education Committee Key Laboratory of Molecular Imaging Probes and Sensors, Shanghai Normal University , Shanghai 200234, China
| | - Yuping Yan
- The Key Laboratory of Resource Chemistry of Ministry of Education, Shanghai Key Laboratory of Rare Earth Functional Materials, and Shanghai Municipal Education Committee Key Laboratory of Molecular Imaging Probes and Sensors, Shanghai Normal University , Shanghai 200234, China
| | - Mingwei Wang
- Department of Nuclear Medicine, Shanghai Cancer Center & Department of Oncology, Shanghai Medical College, Fudan University , Shanghai 200032, China
| | - Hong Yang
- The Key Laboratory of Resource Chemistry of Ministry of Education, Shanghai Key Laboratory of Rare Earth Functional Materials, and Shanghai Municipal Education Committee Key Laboratory of Molecular Imaging Probes and Sensors, Shanghai Normal University , Shanghai 200234, China
| | - Yingjian Zhang
- Department of Nuclear Medicine, Shanghai Cancer Center & Department of Oncology, Shanghai Medical College, Fudan University , Shanghai 200032, China
| | - Shiping Yang
- The Key Laboratory of Resource Chemistry of Ministry of Education, Shanghai Key Laboratory of Rare Earth Functional Materials, and Shanghai Municipal Education Committee Key Laboratory of Molecular Imaging Probes and Sensors, Shanghai Normal University , Shanghai 200234, China
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Sobierajska P, Pazik R, Zawisza K, Renaudin G, Nedelec JM, Wiglusz RJ. Effect of lithium substitution on the charge compensation, structural and luminescence properties of nanocrystalline Ca10(PO4)6F2activated with Eu3+ions. CrystEngComm 2016. [DOI: 10.1039/c6ce00320f] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
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