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Bil M, Kijeńska-Gawrońska E, Głodkowska-Mrówka E, Manda-Handzlik A, Mrówka P. Design and in vitro evaluation of electrospun shape memory polyurethanes for self-fitting tissue engineering grafts and drug delivery systems. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2020; 110:110675. [PMID: 32204102 DOI: 10.1016/j.msec.2020.110675] [Citation(s) in RCA: 33] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/24/2019] [Revised: 01/15/2020] [Accepted: 01/15/2020] [Indexed: 12/11/2022]
Abstract
Integration of multiple features including shape memory, biodegradation, and sustained drug delivery in a single material offers the opportunity to significantly improve the abilities of implantable devices for cardiovascular system regeneration. Two types of shape memory polyurethanes (SMPUs): PU-PLGA and PU-PLLA/PEG differing in soft segments composition that comprising blends of various biodegradable polyols, i.e. D,l-lactide-co-glycolide diol (o-PLGA), poly(e-caprolactone) diols (o-PCL) with various molecular weights, poly-l-lactide diol (o-PLLA), polyethylene glycol (o-PEG) were synthesized and further utilized to electrospun nanofibrous - rapamycin (Rap) delivery system. Structure characterization by Fourier transform infrared spectroscopy (FTIR), differential scanning calorimetry (DCS) and hydrophilicity measurements were performed to gain more insights on the influence of the particular units of the softs segments on the transition temperature (Ttrans), shape recovery, degradation profile, and drug release kinetics. In vitro study in PBS solution revealed that incorporation of o-PLGA segments to SMPUs is favorable over o-PEG as increased shape memory performance was observed. Moreover, presence of PLGA in PU-PLGA gave more predictable degradation profile in comparison to PU-PLLA/PEG system. Human Cardiac Fibroblasts (HCF) viability tests in vitro confirmed that the amount of Rap released from evaluated PU-PLLA/PEG/Rap and PU-PLGA/Rap drug delivery systems was sufficient to inhibit cells growth on the surface of the tested materials.
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Affiliation(s)
- Monika Bil
- Materials Design Division, Faculty of Materials Science and Engineering, Warsaw University of Technology, 141 Woloska Street, 02-507 Warsaw, Poland.
| | - Ewa Kijeńska-Gawrońska
- Materials Design Division, Faculty of Materials Science and Engineering, Warsaw University of Technology, 141 Woloska Street, 02-507 Warsaw, Poland
| | - Eliza Głodkowska-Mrówka
- Department of Experimental Hematology, Department of Laboratory Medicine, Institute of Hematology and Transfusion Medicine, 5 Indiry Gandhi Str, 02-776 Warsaw, Poland
| | - Aneta Manda-Handzlik
- Department of Laboratory Diagnostics and Clinical Immunology of Developmental Age, Medical University of Warsaw, 63A Żwirki i Wigury Street, 02-091 Warsaw, Poland
| | - Piotr Mrówka
- Department of Biophysics and Human Physiology, Medical University of Warsaw, 5 Chalubinskiego Str., 02-004 Warsaw, Poland
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Thangavel S, Yoshitomi T, Sakharkar MK, Nagasaki Y. Redox nanoparticle increases the chemotherapeutic efficiency of pioglitazone and suppresses its toxic side effects. Biomaterials 2016; 99:109-23. [PMID: 27235996 DOI: 10.1016/j.biomaterials.2016.05.001] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2015] [Revised: 04/26/2016] [Accepted: 05/02/2016] [Indexed: 02/03/2023]
Abstract
Pioglitazone is a widely used anti-diabetic drug that induces cytotoxicity in cancer cells; however, its clinical use is questioned due to its associated liver toxicity caused by increased oxidative stress. We therefore employed nitroxide-radical containing nanoparticle, termed redox nanoparticle (RNP(N)) which is an effective scavenger of reactive oxygen species (ROS) as a drug carrier. RNP(N) encapsulation increased pioglitazone solubility, thus increasing cellular uptake of encapsulated pioglitazone which reduced the dose required to induce toxicity in prostate cancer cell lines. Investigation of in vitro molecular mechanism of pioglitazone revealed that both apoptosis and cell cycle arrest were involved in tumor cell death. In addition, intravenously administered pioglitazone-loaded RNP(N) produced significant tumor volume reduction in vivo due to enhanced permeation and retention effect. Most importantly, oxidative damage caused by pioglitazone in the liver was significantly suppressed by pioglitazone-loaded RNP(N) due to the presence of nitroxide radicals. It is interesting to note that oral administration of encapsulated pioglitazone, and co-administration of RNP(N) and pioglitazone, i.e., no encapsulation of pioglitazone in RNP(N) also significantly contributed to suppression of the liver injury. Therefore, use of RNP(N) either as an adjuvant or as a carrier for drugs with severe side effects is a promising chemotherapeutic strategy.
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Affiliation(s)
- Sindhu Thangavel
- Department of Materials Sciences, Graduate School of Pure and Applied Sciences, University of Tsukuba, Tennodai 1-1-1, Tsukuba, Ibaraki 305-8573, Japan
| | - Toru Yoshitomi
- Department of Materials Sciences, Graduate School of Pure and Applied Sciences, University of Tsukuba, Tennodai 1-1-1, Tsukuba, Ibaraki 305-8573, Japan
| | - Meena Kishore Sakharkar
- Graduate School of Life and Environmental Sciences, University of Tsukuba, Tsukuba, Tennodai 1-1-1, Ibaraki 305-8572, Japan
| | - Yukio Nagasaki
- Department of Materials Sciences, Graduate School of Pure and Applied Sciences, University of Tsukuba, Tennodai 1-1-1, Tsukuba, Ibaraki 305-8573, Japan; Master's School of Medical Sciences, Graduate School of Comprehensive Human Sciences, University of Tsukuba, Tennoudai 1-1-1, Tsukuba, Ibaraki 305-8573, Japan; Satellite Laboratory, International Center for Materials Nanoarchitectonics (WPI-MANA), National Institute for Materials Science (NIMS), University of Tsukuba, Tennoudai 1-1-1, Tsukuba, Ibaraki 305-8573, Japan.
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La Maestra S, Micale RT, De Flora S, D’Agostini F, Ganchev G, Iltcheva M, Petkov N, Steele VE, Balansky R. DNA damage in exfoliated cells and histopathological alterations in the urinary tract of mice exposed to cigarette smoke and treated with chemopreventive agents. Carcinogenesis 2013; 34:183-9. [PMID: 23042096 PMCID: PMC3534192 DOI: 10.1093/carcin/bgs314] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2012] [Revised: 09/18/2012] [Accepted: 09/28/2012] [Indexed: 01/25/2023] Open
Abstract
Cigarette smoke (CS) is convincingly carcinogenic in mice when exposure starts at birth. We investigated the induction and modulation of alterations in the kidney and urinary bladder of CS-exposed mice. A total of 484 strain H Swiss mice were either sham-exposed or exposed since birth to mainstream CS (MCS) for 4 months. Dietary agents, including myo-inositol, suberoylanilide hydroxamic acid, bexarotene, pioglitazone and a combination of bexarotene and pioglitazone, were administered after weaning. Comet analyses showed that, after 2 and 4 months, MCS causes DNA damage in exfoliated urothelial cells, which can be prevented by myo-inositol and the peroxisome proliferator-activated receptor-γ ligand pioglitazone. After 7 months, the 17.6% of MCS-exposed male mice exhibited lesions of the urinary tract versus the 6.1% of sham-exposed mice, which emphasizes the role of sex hormones in urinary tract carcinogenesis. Myo-inositol and the RXR-specific retinoid bexarotene did not affect these alterations. The histone deacetylase inhibitor suberoylanilide hydroxamic acid (Vorinostat) increased the incidence of kidney epithelium hyperplasia. Pioglitazone significantly enhanced the incidence of kidney lesions as compared with mice exposed to MCS only, indicating possible adverse effects of this antidiabetic drug, which were lost upon combination with bexarotene according to a combined chemoprevention strategy. RXR is a heterodymeric partner for peroxisome proliferator-activated receptor-γ, thereby modulating the expression of multiple target genes. In conclusion, there is contrast between the ability of pioglitazone to inhibit DNA damage in exfoliated cells and the alterations induced in the urinary tract of MCS-exposed mice, suggesting the occurrence of non-genotoxic mechanisms for this drug.
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Affiliation(s)
- Sebastiano La Maestra
- Department of Health Sciences, University of Genoa, Via A. Pastore 1, 16132 Genoa, Italy
| | - Rosanna T. Micale
- Department of Health Sciences, University of Genoa, Via A. Pastore 1, 16132 Genoa, Italy
| | - Silvio De Flora
- Department of Health Sciences, University of Genoa, Via A. Pastore 1, 16132 Genoa, Italy
| | - Francesco D’Agostini
- Department of Health Sciences, University of Genoa, Via A. Pastore 1, 16132 Genoa, Italy
| | | | | | | | | | - Roumen Balansky
- Department of Health Sciences, University of Genoa, Via A. Pastore 1, 16132 Genoa, Italy
- National Center of Oncology, Sofia 1756, Bulgaria and
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Wang X, Chen Y, Song Y, Zhang S, Xie X, Wang X. Activated Syndecan-1 shedding contributes to mice colitis induced by dextran sulfate sodium. Dig Dis Sci 2011; 56:1047-56. [PMID: 20936359 DOI: 10.1007/s10620-010-1398-8] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/27/2010] [Accepted: 08/12/2010] [Indexed: 12/21/2022]
Abstract
BACKGROUND Syndecan-1(Sdc1) plays important roles in many steps of inflammatory responses. In ulcerative colitis patients, decreased Sdc1 expression was observed and Sdc1 analogue heparin could improve the disease course. A better understanding of how Sdc1 functions in colitis will benefit the disease intervention. AIMS To evaluate the role of Sdc1 in dextran sulfate sodium (DSS)-induced colitis. METHODS BALB/c mice were grouped randomly into control, DSS, and heparin+DSS. The DSS group was given 4% DSS orally and heparin+DSS group was given 4% DSS with heparin (enoxaparin) subcutaneously, while the control was given distilled water orally. All mice were killed at day 7. Disease activities, histopathological changes, membrane-bound and free Sdc1 level and mRNA expression of Sdc1, IL-1, and IL-10 in colon mucosa were detected. RESULTS Significant colitis was observed in the DSS group, but disease activity index and histological score showed significant lower in the heparin+DSS group than those in the DSS group. Compared to the control group, decreased Sdc1 protein expression was detected in colon mucosa of DSS-induced colitis while Sdc1 ectodomain level in serum was much higher. Inhibited Sdc1 ectodomain shedding was detected in the heparin+DSS group compared to the DSS group. RT-PCR demonstrated that both IL-1 and IL-10 expression were up-regulated in DSS-induced colitis while heparin lessened the up-regulation extent. CONCLUSIONS Sdc1 shedding is activated in DSS-induced colitis and heparin, which mimics Sdc1 functions, relieves colitis severity by inhibiting Sdc1 shedding and down-regulating cytokines expression.
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Affiliation(s)
- Xia Wang
- Guangdong Provincial Key Laboratory of Gastroenterology and Department of Digestive Diseases, Nanfang Hospital, Southern Medical University, 510515, Guangzhou, China.
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Bazuine M, Stenkula KG, Cam M, Arroyo M, Cushman SW. Guardian of corpulence: a hypothesis on p53 signaling in the fat cell. ACTA ACUST UNITED AC 2009; 4:231-243. [PMID: 20126301 DOI: 10.2217/clp.09.2] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Abstract
Adipocytes provide an organism with fuel in times of caloric deficit, and are an important type of endocrine cell in the maintenance of metabolic homeostasis. In addition, as a lipid-sink, adipocytes serve an equally important role in the protection of organs from the damaging effects of ectopic lipid deposition. For the organism, it is of vital importance to maintain adipocyte viability, yet the fat depot is a demanding extracellular environment with high levels of interstitial free fatty acids and associated lipotoxic effects. These surroundings are less than beneficial for the overall health of any resident cell, adipocyte and preadipocyte alike. In this review, we discuss the process of adipogenesis and the potential involvement of the p53 tumor-suppressor protein in alleviating some of the cellular stress experienced by these cells. In particular, we discuss p53-mediated mechanisms that prevent damage caused by reactive oxygen species and the effects of lipotoxicity. We also suggest the potential for two p53 target genes, START domain-containing protein 4 (StARD4) and oxysterol-binding protein (OSBP), with the concomitant synthesis of the signaling molecule oxysterol, to participate in adipogenesis.
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Affiliation(s)
- Merlijn Bazuine
- Experimental Diabetes, Metabolism & Nutrition Section, Diabetes Branch, NIDDK, NIH, Building 10-CRC, Room 5W-5816, 10 Center Drive, Bethesda, MD 20892, USA, Tel.: +1 301 496 7354, ,
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