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Leelasukseree R, Chouyratchakarn W, Phutiyothin C, Pikwong F, Srisopar O, Baipaywad P, Udomsom S, Mongkolpathumrat P, Supanchart C, Kumphune S. Recombinant human secretory leukocyte protease inhibitor (rhSLPI) coated titanium enhanced human osteoblast adhesion and differentiation. Sci Rep 2023; 13:23013. [PMID: 38155270 PMCID: PMC10754898 DOI: 10.1038/s41598-023-50565-8] [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] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2023] [Accepted: 12/21/2023] [Indexed: 12/30/2023] Open
Abstract
Osseointegration is vital to success in orthopedic and dental reconstructions with implanted materials. The bone matrix or cells-particularly osteoblasts-are required to achieve functional contact on the implant surface. Osteoblast induction is therefore essential for osteogenesis to occur. Enhancement of osteoblast adhesion, proliferation, and differentiation, particularly by implant surface modifications, have been found challenging to develop. Secretory Leukocyte Protease Inhibitor (SLPI), a cation ionic protein with anti-inflammatory and anti-bacterial activities, showed activation in osteoblast proliferation and differentiation. However, the effects of coating recombinant human (rh) SLPI on a titanium alloy surface on human osteoblast adhesion, proliferation, and differentiation has never been investigated. In this study, titanium alloys (Ti-6Al-4V) were coated with rhSLPI, while human osteoblast adhesion, proliferation, differentiation, actin cytoskeletal organization, and gene expressions involved in cell adhesion and differentiation were investigated. The results indicate that coating titanium with 10-100 µg/ml rhSLPI enhanced the physical properties of the Ti surface and enhanced human osteoblast (hFOB 1.19) cell adhesion, activated actin dynamic, enhanced adhesive forces, upregulated integrins α1, α2, and α5, enhanced cell proliferation, mineralization, alkaline phosphatase activity, and upregulated ALP, OCN, and Runx2. This is the first study to demonstrate that coating SLPI on titanium surfaces enhances osseointegration and could be a candidate molecule for surface modification in medical implants.
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Affiliation(s)
- Radchanon Leelasukseree
- Biomedical Engineering and Innovation Research Center, Chiang Mai University, Mueang Chiang Mai District, Chiang Mai, 50200, Thailand
- Biomedical Engineering Institute (BMEI), Chiang Mai University, Mueang Chiang Mai District, Chiang Mai, 50200, Thailand
| | - Wannapat Chouyratchakarn
- Biomedical Engineering and Innovation Research Center, Chiang Mai University, Mueang Chiang Mai District, Chiang Mai, 50200, Thailand
- Biomedical Engineering Institute (BMEI), Chiang Mai University, Mueang Chiang Mai District, Chiang Mai, 50200, Thailand
| | - Chayanisa Phutiyothin
- Biomedical Engineering and Innovation Research Center, Chiang Mai University, Mueang Chiang Mai District, Chiang Mai, 50200, Thailand
- Biomedical Engineering Institute (BMEI), Chiang Mai University, Mueang Chiang Mai District, Chiang Mai, 50200, Thailand
| | - Faprathan Pikwong
- Biomedical Engineering and Innovation Research Center, Chiang Mai University, Mueang Chiang Mai District, Chiang Mai, 50200, Thailand
- Biomedical Engineering Institute (BMEI), Chiang Mai University, Mueang Chiang Mai District, Chiang Mai, 50200, Thailand
| | - Onnicha Srisopar
- Biomedical Engineering and Innovation Research Center, Chiang Mai University, Mueang Chiang Mai District, Chiang Mai, 50200, Thailand
- Biomedical Engineering Institute (BMEI), Chiang Mai University, Mueang Chiang Mai District, Chiang Mai, 50200, Thailand
| | - Phornsawat Baipaywad
- Biomedical Engineering and Innovation Research Center, Chiang Mai University, Mueang Chiang Mai District, Chiang Mai, 50200, Thailand
- Biomedical Engineering Institute (BMEI), Chiang Mai University, Mueang Chiang Mai District, Chiang Mai, 50200, Thailand
| | - Suruk Udomsom
- Biomedical Engineering and Innovation Research Center, Chiang Mai University, Mueang Chiang Mai District, Chiang Mai, 50200, Thailand
- Biomedical Engineering Institute (BMEI), Chiang Mai University, Mueang Chiang Mai District, Chiang Mai, 50200, Thailand
| | - Podsawee Mongkolpathumrat
- Cardio-Thoracic Technology Program, Chulabhorn International College of Medicine (CICM), Cooperative Learning Center, Thammasat University (Rangsit Center), Piyachart 2, 99 Moo 18 Klong Luang, Rangsit, Pathumthani, 12120, Thailand
| | - Chayarop Supanchart
- Department of Oral and Maxillofacial Surgery, Faculty of Dentistry, Chiang Mai University, Chiang Mai, 50200, Thailand
| | - Sarawut Kumphune
- Biomedical Engineering and Innovation Research Center, Chiang Mai University, Mueang Chiang Mai District, Chiang Mai, 50200, Thailand.
- Biomedical Engineering Institute (BMEI), Chiang Mai University, Mueang Chiang Mai District, Chiang Mai, 50200, Thailand.
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Horne R, Ben-Shlomo N, Jensen M, Ellerman M, Escudero C, Hua R, Bennion D, Guymon CA, Hansen MR. Reducing the foreign body response on human cochlear implants and their materials in vivo with photografted zwitterionic hydrogel coatings. Acta Biomater 2023; 166:212-223. [PMID: 37187301 PMCID: PMC10330692 DOI: 10.1016/j.actbio.2023.05.011] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [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: 12/15/2022] [Revised: 04/27/2023] [Accepted: 05/04/2023] [Indexed: 05/17/2023]
Abstract
The foreign body response to implanted materials often complicates the functionality of sensitive biomedical devices. For cochlear implants, this response can reduce device performance, battery life and preservation of residual acoustic hearing. As a permanent and passive solution to the foreign body response, this work investigates ultra-low-fouling poly(carboxybetaine methacrylate) (pCBMA) thin film hydrogels that are simultaneously photo-grafted and photo-polymerized onto polydimethylsiloxane (PDMS). The cellular anti-fouling properties of these coatings are robustly maintained even after six-months subcutaneous incubation and over a broad range of cross-linker compositions. On pCBMA-coated PDMS sheets implanted subcutaneously, capsule thickness and inflammation are reduced significantly in comparison to uncoated PDMS or coatings of polymerized poly(ethylene glycol dimethacrylate) (pPEGDMA). Further, capsule thickness is reduced over a wide range of pCBMA cross-linker compositions. On cochlear implant electrode arrays implanted subcutaneously for one year, the coating bridges over the exposed platinum electrodes and dramatically reduces the capsule thickness over the entire implant. Coated cochlear implant electrode arrays could therefore lead to persistent improved performance and reduced risk of residual hearing loss. More generally, the in vivo anti-fibrotic properties of pCBMA coatings also demonstrate potential to mitigate the fibrotic response on a variety of sensing/stimulating implants. STATEMENT OF SIGNIFICANCE: This article presents, for the first time, evidence of the in vivo anti-fibrotic effect of zwitterionic hydrogel thin films photografted to polydimethylsiloxane (PDMS) and human cochlear implant arrays. The hydrogel coating shows no evidence of degradation or loss of function after long-term implantation. The coating process enables full coverage of the electrode array. The coating reduces fibrotic capsule thickness 50-70% over a broad range of cross-link densities for implantations from six weeks to one year.
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Affiliation(s)
- Ryan Horne
- University of Iowa Carver College of Medicine, United States of America; University of Iowa Department of Chemical and Biochemical Engineering, United States of America
| | - Nir Ben-Shlomo
- University of Iowa Hospitals and Clinics Department of Otolaryngology, United States of America
| | - Megan Jensen
- University of Iowa Hospitals and Clinics Department of Otolaryngology, United States of America
| | - Morgan Ellerman
- University of Iowa Department of Chemical and Biochemical Engineering, United States of America
| | - Caleb Escudero
- University of Iowa Carver College of Medicine, United States of America
| | - Rong Hua
- University of Iowa Hospitals and Clinics Department of Otolaryngology, United States of America
| | - Douglas Bennion
- University of Iowa Hospitals and Clinics Department of Otolaryngology, United States of America
| | - C Allan Guymon
- University of Iowa Department of Chemical and Biochemical Engineering, United States of America
| | - Marlan R Hansen
- University of Iowa Hospitals and Clinics Department of Otolaryngology, United States of America.
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Hsu JC, Du Y, Sengupta A, Dong YC, Mossburg KJ, Bouché M, Maidment ADA, Weljie AM, Cormode DP. Effect of Nanoparticle Synthetic Conditions on Ligand Coating Integrity and Subsequent Nano-Biointeractions. ACS Appl Mater Interfaces 2021; 13:58401-58410. [PMID: 34846845 PMCID: PMC8715381 DOI: 10.1021/acsami.1c18941] [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] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/10/2023]
Abstract
Most current nanoparticle formulations have relatively low clearance efficiency, which may hamper their likelihood for clinical translation. Herein, we sought to compare the clearance and cellular distribution profiles between sub-5 nm, renally-excretable silver sulfide nanoparticles (Ag2S-NPs) synthesized via either a bulk, high temperature, or a microfluidic, room temperature approach. We found that the thermolysis approach led to significant ligand degradation, but the surface coating shell was unaffected by the microfluidic synthesis. We demonstrated that the clearance was improved for Ag2S-NPs with intact ligands, with less uptake in the liver. Moreover, differential distribution in hepatic cells was observed, where Ag2S-NPs with degraded coatings tend to accumulate in Kupffer cells and those with intact coatings are more frequently found in hepatocytes. Therefore, understanding the impact of synthetic processes on ligand integrity and subsequent nano-biointeractions will aid in designing nanoparticle platforms with enhanced clearance and desired distribution profiles.
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Affiliation(s)
- Jessica C Hsu
- Department of Radiology, University of Pennsylvania, 3400 Spruce Street, 1 Silverstein, Philadelphia, Pennsylvania 19104, United States
- Department of Bioengineering, University of Pennsylvania, Philadelphia, Pennsylvania 19104, United States
| | - Yu Du
- Division of Gastroenterology and Hepatology, University of Pennsylvania, Philadelphia, Pennsylvania 19104, United States
| | - Arjun Sengupta
- Department of Systems Pharmacology and Translational Therapeutics, University of Pennsylvania, Philadelphia, Pennsylvania 19104, United States
| | - Yuxi C Dong
- Department of Radiology, University of Pennsylvania, 3400 Spruce Street, 1 Silverstein, Philadelphia, Pennsylvania 19104, United States
- Department of Bioengineering, University of Pennsylvania, Philadelphia, Pennsylvania 19104, United States
| | - Katherine J Mossburg
- Department of Radiology, University of Pennsylvania, 3400 Spruce Street, 1 Silverstein, Philadelphia, Pennsylvania 19104, United States
- Department of Bioengineering, University of Pennsylvania, Philadelphia, Pennsylvania 19104, United States
| | - Mathilde Bouché
- Department of Radiology, University of Pennsylvania, 3400 Spruce Street, 1 Silverstein, Philadelphia, Pennsylvania 19104, United States
| | - Andrew D A Maidment
- Department of Radiology, University of Pennsylvania, 3400 Spruce Street, 1 Silverstein, Philadelphia, Pennsylvania 19104, United States
| | - Aalim M Weljie
- Department of Systems Pharmacology and Translational Therapeutics, University of Pennsylvania, Philadelphia, Pennsylvania 19104, United States
| | - David P Cormode
- Department of Radiology, University of Pennsylvania, 3400 Spruce Street, 1 Silverstein, Philadelphia, Pennsylvania 19104, United States
- Department of Bioengineering, University of Pennsylvania, Philadelphia, Pennsylvania 19104, United States
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Zhang N, Lin J, Chew SY. Neural Cell Membrane-Coated Nanoparticles for Targeted and Enhanced Uptake by Central Nervous System Cells. ACS Appl Mater Interfaces 2021; 13:55840-55850. [PMID: 34792341 DOI: 10.1021/acsami.1c16543] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [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: 06/13/2023]
Abstract
Targeted drug delivery to specific neural cells within the central nervous system (CNS) plays important roles in treating neurological disorders, such as neurodegenerative (e.g., targeting neurons) and demyelinating diseases [e.g., targeting oligodendrocytes (OLs)]. However, the presence of many other cell types within the CNS, such as microglial and astrocytes, may lead to nonspecific uptake and subsequent side effects. As such, exploring an effective and targeted drug delivery system is of great necessity. Synthetic micro-/nanoparticles that have been coated with biologically derived cellular membranes have emerged as a new class of drug delivery vehicles. However, the use of neural cell-derived membrane coatings remains unexplored. Here, we utilized this technique and demonstrated the efficacy of targeted delivery by using four types of cell membranes that were derived from the CNS, namely, microglial, astrocytes, oligodendrocyte progenitor cells (OPCs), and cortical neurons. A successful cell membrane coating over poly(ε-caprolactone) nanoparticles (NPs) was confirmed using dynamic light scattering, zeta potential measurements, and transmission electron microscopy. Subsequently, an extensive screening of these cell membrane-coated NPs was carried out on various CNS cells. Results suggested that microglial and OLs were the most sensitive cell types toward cell membrane-coated NPs. Specifically, cell membrane-coated NPs significantly enhanced the uptake efficiency of OLs (p < 0.001). Additionally, a temporal uptake study indicated that the OLs took up microglial membrane-coated NPs (DPP-PCL-M Mem) most efficiently. Besides that, coating the NPs with four types of the CNS cell membrane did not result in obvious specific uptake in microglial but reduced the activation of microglial, especially for DPP-PCL-M Mem (p < 0.01). Taken together, DPP-PCL-M Mem were uptaken most efficiently in OLs and did not induce significant microglial activation and may be most suitable for CNS drug delivery applications.
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Affiliation(s)
- Na Zhang
- School of Chemical and Biomedical Engineering, Nanyang Technological University, Singapore 637459, Singapore
| | - Junquan Lin
- School of Chemical and Biomedical Engineering, Nanyang Technological University, Singapore 637459, Singapore
| | - Sing Yian Chew
- School of Chemical and Biomedical Engineering, Nanyang Technological University, Singapore 637459, Singapore
- Lee Kong Chian School of Medicine, Nanyang Technological University, Singapore 308232, Singapore
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5
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Yang K, Wang Q, Wang Y, Li S, Gu Y, Gao N, Zhang F, Lei P, Wang R, Xu H. Poly(γ-glutamic acid) Nanocoating To Enhance the Viability of Pseudomonas stutzeri NRCB010 through Cell Surface Engineering. ACS Appl Mater Interfaces 2021; 13:39957-39966. [PMID: 34376049 DOI: 10.1021/acsami.1c12538] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [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: 06/13/2023]
Abstract
Microbial inoculants can enhance soil quality, promote plant nutrient acquisition, and alleviate problems caused by the excessive use of chemical fertilizers. However, susceptibility to harsh conditions during transport and storage, as well as the short shelf-life of plant growth-promoting rhizobacteria (PGPR), limit industrial application. Herein, a novel strategy to form nanocoating on bacterial surfaces to enhance viability was proposed. The nanocoating was composed of N-hydroxysuccinimide (NHS)-modified poly (γ-glutamic acid) (γ-PGA) and calcium ions, which could adhere to the surface of bacteria by forming covalent bonds and ionic bonds with the bacteria. The bacteria encapsulated in the coating had better resistance against harsh conditions than bare bacteria. The viability of coated bacteria was also increased by 2.38 times compared with bare bacteria after 4 weeks of storage. The pot experiment showed that coated Pseudomonas stutzeri NRCB010 had better growth-promoting properties compared with free P. stutzeri NRCB010. These results indicate that cell surface engineering is an effective method to enhance the resistance of bacteria against harsh conditions and is expected to promote the widespread use of PGPR.
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Affiliation(s)
- Kai Yang
- State Key Laboratory of Materials-Oriented Chemical Engineering, Nanjing 211816, China
- College of Food Science and Light Industry, Nanjing Tech University, Nanjing 211816, China
| | - Qian Wang
- State Key Laboratory of Materials-Oriented Chemical Engineering, Nanjing 211816, China
- College of Food Science and Light Industry, Nanjing Tech University, Nanjing 211816, China
| | - Yu Wang
- State Key Laboratory of Materials-Oriented Chemical Engineering, Nanjing 211816, China
- College of Food Science and Light Industry, Nanjing Tech University, Nanjing 211816, China
| | - Sha Li
- State Key Laboratory of Materials-Oriented Chemical Engineering, Nanjing 211816, China
- College of Food Science and Light Industry, Nanjing Tech University, Nanjing 211816, China
| | - Yian Gu
- State Key Laboratory of Materials-Oriented Chemical Engineering, Nanjing 211816, China
- College of Food Science and Light Industry, Nanjing Tech University, Nanjing 211816, China
| | - Nan Gao
- State Key Laboratory of Materials-Oriented Chemical Engineering, Nanjing 211816, China
- College of Food Science and Light Industry, Nanjing Tech University, Nanjing 211816, China
| | - Fuhai Zhang
- Agricultural and Rural Affairs of Yantai, Yantai 264000, China
| | - Peng Lei
- State Key Laboratory of Materials-Oriented Chemical Engineering, Nanjing 211816, China
- College of Food Science and Light Industry, Nanjing Tech University, Nanjing 211816, China
| | - Rui Wang
- State Key Laboratory of Materials-Oriented Chemical Engineering, Nanjing 211816, China
- College of Food Science and Light Industry, Nanjing Tech University, Nanjing 211816, China
| | - Hong Xu
- State Key Laboratory of Materials-Oriented Chemical Engineering, Nanjing 211816, China
- College of Food Science and Light Industry, Nanjing Tech University, Nanjing 211816, China
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Voronovic E, Skripka A, Jarockyte G, Ger M, Kuciauskas D, Kaupinis A, Valius M, Rotomskis R, Vetrone F, Karabanovas V. Uptake of Upconverting Nanoparticles by Breast Cancer Cells: Surface Coating versus the Protein Corona. ACS Appl Mater Interfaces 2021; 13:39076-39087. [PMID: 34378375 PMCID: PMC8824430 DOI: 10.1021/acsami.1c10618] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [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: 05/16/2023]
Abstract
Fluorophores with multifunctional properties known as rare-earth-doped nanoparticles (RENPs) are promising candidates for bioimaging, therapy, and drug delivery. When applied in vivo, these nanoparticles (NPs) have to retain long blood-circulation time, bypass elimination by phagocytic cells, and successfully arrive at the target area. Usually, NPs in a biological medium are exposed to proteins, which form the so-called "protein corona" (PC) around the NPs and influence their targeted delivery and accumulation in cells and tissues. Different surface coatings change the PC size and composition, subsequently deciding the fate of the NPs. Thus, detailed studies on the PC are of utmost importance to determine the most suitable NP surface modification for biomedical use. When it comes to RENPs, these studies are particularly scarce. Here, we investigate the PC composition and its impact on the cellular uptake of citrate-, SiO2-, and phospholipid micelle-coated RENPs (LiYF4:Yb3+,Tm3+). We observed that the PC of citrate- and phospholipid-coated RENPs is relatively stable and similar in the adsorbed protein composition, while the PC of SiO2-coated RENPs is larger and highly dynamic. Moreover, biocompatibility, accumulation, and cytotoxicity of various RENPs in cancer cells have been evaluated. On the basis of the cellular imaging, supported by the inhibition studies, it was revealed that RENPs are internalized by endocytosis and that specific endocytic routes are PC composition dependent. Overall, these results are essential to fill the gaps in the fundamental understanding of the nano-biointeractions of RENPs, pertinent for their envisioned application in biomedicine.
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Affiliation(s)
- Evelina Voronovic
- Biomedical
Physics Laboratory of National Cancer Institute, Baublio 3B, LT-08406 Vilnius, Lithuania
- Life
Sciences Center, Vilnius University, Sauletekio av. 7, LT-10257 Vilnius, Lithuania
- Department
of Chemistry and Bioengineering, Vilnius
Gediminas Technical University, Sauletekio av. 11, LT-10223 Vilnius, Lithuania
| | - Artiom Skripka
- Centre
Énergie, Matériaux et Télécommunications, Institut National de la Recherche Scientifique, Université
du Québec, 1650 Boul. Lionel-Boulet, Varennes, Quebec J3X 1S2, Canada
| | - Greta Jarockyte
- Biomedical
Physics Laboratory of National Cancer Institute, Baublio 3B, LT-08406 Vilnius, Lithuania
- Life
Sciences Center, Vilnius University, Sauletekio av. 7, LT-10257 Vilnius, Lithuania
| | - Marija Ger
- Institute
of Biochemistry, Life Sciences Center, Vilnius
University, Sauletekio
av. 7, LT-10257 Vilnius, Lithuania
| | - Dalius Kuciauskas
- Institute
of Biochemistry, Life Sciences Center, Vilnius
University, Sauletekio
av. 7, LT-10257 Vilnius, Lithuania
| | - Algirdas Kaupinis
- Institute
of Biochemistry, Life Sciences Center, Vilnius
University, Sauletekio
av. 7, LT-10257 Vilnius, Lithuania
| | - Mindaugas Valius
- Institute
of Biochemistry, Life Sciences Center, Vilnius
University, Sauletekio
av. 7, LT-10257 Vilnius, Lithuania
| | - Ricardas Rotomskis
- Biomedical
Physics Laboratory of National Cancer Institute, Baublio 3B, LT-08406 Vilnius, Lithuania
- Biophotonics
Group of Laser Research Centre, Vilnius
University, Sauletekio
av. 9, LT-10222 Vilnius, Lithuania
| | - Fiorenzo Vetrone
- Centre
Énergie, Matériaux et Télécommunications, Institut National de la Recherche Scientifique, Université
du Québec, 1650 Boul. Lionel-Boulet, Varennes, Quebec J3X 1S2, Canada
| | - Vitalijus Karabanovas
- Biomedical
Physics Laboratory of National Cancer Institute, Baublio 3B, LT-08406 Vilnius, Lithuania
- Department
of Chemistry and Bioengineering, Vilnius
Gediminas Technical University, Sauletekio av. 11, LT-10223 Vilnius, Lithuania
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Molaei M, Attarzadeh N, Fattah-Alhosseini A. Tailoring the biological response of zirconium implants using zirconia bioceramic coatings: A systematic review. J Trace Elem Med Biol 2021; 66:126756. [PMID: 33831798 DOI: 10.1016/j.jtemb.2021.126756] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/21/2020] [Revised: 03/18/2021] [Accepted: 03/29/2021] [Indexed: 11/18/2022]
Abstract
BACKGROUND The poor biological performance of zirconium implants in the human body resulting from their bio-inertness and vulnerability to corrosion and bacterial activity reflects the need for further studies on substitution or performing the surface modification. The suggestion of employing zirconia (ZrO2) bioceramic coatings for surface modification seems beneficial. OBJECTIVES This systematic review aims to identify and summarize existing documents reporting the biological responses for ZrO2 coatings produced by the PEO process on zirconium implants. METHODS PubMed, Scopus, and Web of Science international databases were searched for the original and English-language studies published between 2000 and 2021. All publications reported at least one study about in-vitro (cellular and immersion studies), in-vivo (animal studies), and antibacterial topics for ZrO2-PEO coated zirconium implants. RESULTS Throughout the initial search, 496 publications were found, and 296 papers remained following the elimination of duplicates. Finally, after multiple screening and eligibility assessments, 25 publications were qualified and included in the review. Among them, 25 in-vitro (cellular and immersion in SBF and Hanks' solutions studies), one in-vivo (animal studies), and eight antibacterial studies were found. CONCLUSION The ZrO2 coated samples demonstrate no cytotoxicity, high cell viability rate, and excellent biocompatibility. However, changing the solution composition and electrical parameters during the PEO procedures result in significant changes to in-vitro responses. As an instance, the ZrO2 coating surface demonstrates greater biocompatibility after irradiated by UV, which makes the surface more suitable for cell growth. Due to weak apatite-forming ability, the zirconium sample shows low bioactivity in SBF. However, most cases (13 out of 16) show that the specific morphology and chemical composition of the ZrO2 coating promote apatite-forming ability with good bioactivity in SBF. Nevertheless, few papers (three out of 16) showed that the ZrO2 coatings immersed in SBF had no apatite precipitates and so no bioactivity. These cases limit the bioactivity enhancement to treatment by UV-light irradiation, hydrothermal and chemical treatment, thermal evaporation, and cathodic polarization post-treatment on ZrO2 coatings. Both zirconium and ZrO2 coated samples do not show apatite-forming ability in Hanks' solution. The ZrO2 coated implant with the bone together indicates a greater shear strength and rapid new bone formation ability during 12 weeks because of containing Ca-P compounds and porous structure. The UV post-treated ZrO2 coating induces faster new bone formation and firmer connection of bond with bone than those of untreated ZrO2 coatings. A stronger antibacterial activity of ZrO2 coatings is confirmed in half of the selected papers (four out of eight studies) compared to the bare zirconium samples. The antibacterial protection of ZrO2 coatings can be influenced by the PEO procedure variables, i.e., solution composition, electrical parameters, and treatment time. In three cases, the antibacterial activity of ZrO2 coatings is enhanced by deposition of Zn, Ag, or Cu antibacterial layers through thermal evaporation post-treatment.
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Affiliation(s)
- Maryam Molaei
- Department of Materials Engineering, Bu-Ali Sina University, Hamedan, 65178-38695, Iran
| | - Navid Attarzadeh
- Environmental Science and Engineering Program, University of Texas at El Paso, El Paso, TX, 79968, USA
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Kumar S, Paul A, Chatterjee S, Pütz S, Nehra N, Wang DS, Nisar A, M. Jennings C, Parekh SH. Effect of ambient temperature on respiratory tract cells exposed to SARS-CoV-2 viral mimicking nanospheres-An experimental study. Biointerphases 2021; 16:011006. [PMID: 33706521 PMCID: PMC8043160 DOI: 10.1116/6.0000743] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [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: 10/29/2020] [Revised: 12/14/2020] [Accepted: 01/05/2021] [Indexed: 12/23/2022] Open
Abstract
The novel coronavirus caused by severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) has reached more than 160 countries and has been declared a pandemic. SARS-CoV-2 infects host cells by binding to the angiotensin-converting enzyme 2 (ACE-2) surface receptor via the spike (S) receptor-binding protein (RBD) on the virus envelope. Global data on a similar infectious disease spread by SARS-CoV-1 in 2002 indicated improved stability of the virus at lower temperatures facilitating its high transmission in the community during colder months (December-February). Seasonal viral transmissions are strongly modulated by temperatures, which can impact viral trafficking into host cells; however, an experimental study of temperature-dependent activity of SARS-CoV-2 is still lacking. We mimicked SARS-CoV-2 with polymer beads coated with the SARS-CoV-2 S protein to study the effect of seasonal temperatures on the binding of virus-mimicking nanospheres to lung epithelia. The presence of the S protein RBD on nanosphere surfaces led to binding by Calu-3 airway epithelial cells via the ACE-2 receptor. Calu-3 and control fibroblast cells with S-RBD-coated nanospheres were incubated at 33 and 37 °C to mimic temperature fluctuations in the host respiratory tract, and we found no temperature dependence in contrast to nonspecific binding of bovine serum ablumin-coated nanospheres. Moreover, the ambient temperature changes from 4 to 40 °C had no effect on S-RBD-ACE-2 ligand-receptor binding and minimal effect on the S-RBD protein structure (up to 40 °C), though protein denaturing occurred at 51 °C. Our results suggest that ambient temperatures from 4 to 40 °C have little effect on the SARS-CoV-2-ACE-2 interaction in agreement with the infection data currently reported.
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Affiliation(s)
- Sachin Kumar
- Department of Biomedical Engineering, University of Texas at Austin, Austin, Texas 78712
| | - Alexandra Paul
- Authors to whom correspondence should be addressed:, , and
| | - Sayantan Chatterjee
- Department of Molecular Spectroscopy, Max Planck Institute for Polymer Research, Mainz 55128, Germany
| | - Sabine Pütz
- Department of Molecular Spectroscopy, Max Planck Institute for Polymer Research, Mainz 55128, Germany
| | - Natasha Nehra
- Department of Biomedical Engineering, University of Texas at Austin, Austin, Texas 78712
| | - Daniel S. Wang
- Department of Biomedical Engineering, University of Texas at Austin, Austin, Texas 78712
| | - Arsalan Nisar
- Department of Biomedical Engineering, University of Texas at Austin, Austin, Texas 78712
| | - Christian M. Jennings
- Department of Biomedical Engineering, University of Texas at Austin, Austin, Texas 78712
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Albano CS, Gomes AM, da Silva Feltran G, da Costa Fernandes CJ, Trino LD, Zambuzzi WF, Lisboa-Filho PN. Bisphosphonate-based surface biofunctionalization improves titanium biocompatibility. J Mater Sci Mater Med 2020; 31:109. [PMID: 33159588 DOI: 10.1007/s10856-020-06437-y] [Citation(s) in RCA: 4] [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] [Subscribe] [Scholar Register] [Received: 10/21/2019] [Accepted: 09/24/2020] [Indexed: 06/11/2023]
Abstract
Novel-biofunctionalized surfaces are required to improve the performance of endosseous implants, which are mainly related to the resistance against biocorrosion, as well as for the consideration of osteoinductive phenomena. Among different strategies, the use of bisphosphonate molecules as linkers between titanium dioxide (TiO2) surfaces and proteins is a distinctive approach, one in which bisphosphonate could play a role in the osseointegration. Thus, to address this issue, we proposed a novel biofunctionalization of TiO2 surfaces using sodium alendronate (ALN) as a linker and bovine serum albumin as the protein. Physicochemical analysis of the functionalized surfaces was performed using contact angle analyses and surface roughness measurements, which indicated an efficient functionalization. The biocompatibility of the functionalized surfaces was analyzed through the adhesion behavior of the pre-osteoblasts onto the samples. Overall, our data showed a significant improvement concerning the cell adhesion by modulating the adhesion cell-related set of genes. The obtained results show that for modified surfaces there is an increase of up to 100 times in the percentage of cells adhered when compared to the control, besides the extracellular matrix remodeling seemed to be an essential prerequisite for the early stages of cell adhesion on to the biomaterials, which was assayed by evaluating the matrix metalloproteinase activities as well as the gene activations. In the expressions of the Bsp and Bglap2 genes, for the group containing ALN (TiO2 + ALN), it was observed an increase in expression (approximately sixfold change) when compared to the control. Altogether, our data clearly showed that the bisphosphonate-biofunctionalized surface enhanced the biocompatibility of titanium and claims to further progress preclinical in vivo experimentation.
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Affiliation(s)
- Carolina Simão Albano
- Department of Chemistry and Biochemistry, Institute of Biosciences of Botucatu, UNESP-São Paulo State University, Botucatu, Brazil
- Department of Physics, UNESP-São Paulo State University, School of Sciences, Bauru, Brazil
| | - Anderson Moreira Gomes
- Department of Chemistry and Biochemistry, Institute of Biosciences of Botucatu, UNESP-São Paulo State University, Botucatu, Brazil
| | - Geórgia da Silva Feltran
- Department of Chemistry and Biochemistry, Institute of Biosciences of Botucatu, UNESP-São Paulo State University, Botucatu, Brazil
| | - Célio Junior da Costa Fernandes
- Department of Chemistry and Biochemistry, Institute of Biosciences of Botucatu, UNESP-São Paulo State University, Botucatu, Brazil
| | - Luciana Daniele Trino
- Department of Physics, UNESP-São Paulo State University, School of Sciences, Bauru, Brazil
| | - Willian Fernando Zambuzzi
- Department of Chemistry and Biochemistry, Institute of Biosciences of Botucatu, UNESP-São Paulo State University, Botucatu, Brazil
- Electron Microscopy Center, Institute of Biosciences of Botucatu, UNESP-São Paulo State University, Botucatu, Brazil
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10
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Jiang P, He Y, Zhao Y, Chen L. Hierarchical Surface Architecture of Hemodialysis Membranes for Eliminating Homocysteine Based on the Multifunctional Role of Pyridoxal 5'-phosphate. ACS Appl Mater Interfaces 2020; 12:36837-36850. [PMID: 32705861 DOI: 10.1021/acsami.0c07090] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [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: 06/11/2023]
Abstract
Patients with end-stage renal disease are prone to developing a complication of hyperhomocysteinemia, manifesting as an elevation of the homocysteine (Hcy) concentration in human plasma. However, Hcy as a protein-bound toxin is barely removed by conventional hemodialysis membranes. Here, we report a novel hemodialysis membrane by preparing a bioactive coating of pyridoxal 5'-phosphate (PLP) and adding biocompatible hyperbranched polyglycerol (HPG) brushes to achieve Hcy removal. The dip-applied PLP coating, a coenzyme with a role in Hcy metabolism, dramatically promoted a decrease in the Hcy concentration in human plasma. Moreover, the aldehyde group of PLP had an intrinsic chemical reactivity toward the terminal amino group to immobilize the HPG brushes on the hemodialysis membrane surface. The hierarchical PLP-HPG layer-functionalized membranes had a high efficacy for eliminating Hcy, with a concentration from the initial stage of 150 μmol/L reduced to a nearly normal level of 20 μmol/L in simulated dialysis. By analyzing the impact of HPG brushes with various chain lengths, we found that HPG brushes with a medium length enabled the PLP coating with the bioactive function of Hcy conversion to additionally protect Hcy-attacked target cells by providing excellent hydrophilicity and a dense enough chain volume overlap of the hyperbranched architecture. Simultaneously, the densely packed HPG brushes generated a maximal steric and hydration barrier that significantly improved biofouling resistance against blood proteins. The optimally functionalized membranes showed a clearance of 83.1% urea and 49.6% lysozyme and a rejection of 96.0% bovine serum albumin. The diversely functionalized PLP-HPG layers demonstrate a potential route for a more integrated hemodialysis membrane that can cope with the urgent issue of hyperhomocysteinemia in clinical hemodialysis therapy.
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Affiliation(s)
- Peng Jiang
- State Key Laboratory of Separation Membranes and Membrane Processes, School of Materials Science and Engineering, Tiangong University, Tianjin 300387, China
| | - Yang He
- State Key Laboratory of Separation Membranes and Membrane Processes, School of Materials Science and Engineering, Tiangong University, Tianjin 300387, China
| | - Yiping Zhao
- State Key Laboratory of Separation Membranes and Membrane Processes, School of Materials Science and Engineering, Tiangong University, Tianjin 300387, China
| | - Li Chen
- State Key Laboratory of Separation Membranes and Membrane Processes, School of Materials Science and Engineering, Tiangong University, Tianjin 300387, China
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11
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Abstract
While various cell responses on material surfaces have been examined, relatively few reports are focused on significant self-deformation of cell nuclei and corresponding chromosomal repositioning. Herein, we prepared a micropillar array of poly(lactide-co-glycolide) (PLGA) and observed significant nuclear deformation of HeLa cells on the polymeric micropillars. In particular, we detected the territory positioning of chromosomes 18 and 19 and gene expression profiles of HeLa cells on the micropillar array using fluorescence in situ hybridization and a DNA microarray. Chromosome 18 was found to be translocated closer to the nuclear periphery than chromosome 19 on the micropillar array. With the repositioning of chromosomal territories, HeLa cells changed their gene expressions on the micropillar array with 180 genes upregulated and 255 genes downregulated for all of the 23 pairs of chromosomes under the experimental conditions and the employed Bioinformatics criteria. Hence, this work deepens the understanding on cell-material interactions by revealing that material surface topography can probably influence chromosomal repositioning in the nuclei and gene expressions of cells.
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Affiliation(s)
- Ruili Liu
- State Key Laboratory of Molecular Engineering of Polymers, Department of Macromolecular Science, Fudan University, Shanghai 200438, China
| | - Jiandong Ding
- State Key Laboratory of Molecular Engineering of Polymers, Department of Macromolecular Science, Fudan University, Shanghai 200438, China
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12
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Bose S, Ke D, Vu AA, Bandyopadhyay A, Goodman SB. Thermal Oxide Layer Enhances Crystallinity and Mechanical Properties for Plasma-Sprayed Hydroxyapatite Biomedical Coatings. ACS Appl Mater Interfaces 2020; 12:33465-33472. [PMID: 32530603 PMCID: PMC8009493 DOI: 10.1021/acsami.0c05035] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [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: 06/02/2023]
Abstract
The stability of plasma-sprayed hydroxyapatite (HA) coatings on metallic implants in vivo remains a significant challenge for load-bearing orthopedic implants despite their excellent mechanical and osteoconductive properties. This study focuses on oxide layer formation on the surface of Ti6Al4V samples through furnace heating at 600, 700, and 800 °C for 10 min for optimization of the most effective oxide layer to increase plasma coating crystallinity and improve plasma coating bond strength with the metal surface. The 800 °C heat treatment shows an effective oxide layer which increases coating crystallinity from 64 to 75% and coating adhesive bond strength from 25.9 ± 2.3 to 30.7 ± 1.1 MPa, while simultaneously reducing the dissolution rate of HA coatings. The addition of biologically relevant dopants, MgO and SiO2, show negligible effects on crystallinity and adhesive bond strength on plasma-sprayed HA coatings and additionally show an enhancement effect on osteoblast proliferation and differentiation. Moreover, the inclusion of these additivess shows an increase in osteogenesis in a rat distal femur model after 6 and 10 weeks of implantation. Overall, this study provides a direct solution to improve the crystallinity, adhesive bond strength, and osteogenic properties of plasma-sprayed HA coatings on orthopedic implants that is more manufacturable and translational from research to an industrial scale.
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Affiliation(s)
- Susmita Bose
- W. M. Keck Biomedical Materials Research Laboratory, School of Mechanical and Materials Engineering, Washington State University, Pullman, Washington 99163, United States
| | - Dongxu Ke
- W. M. Keck Biomedical Materials Research Laboratory, School of Mechanical and Materials Engineering, Washington State University, Pullman, Washington 99163, United States
| | - Ashley A Vu
- W. M. Keck Biomedical Materials Research Laboratory, School of Mechanical and Materials Engineering, Washington State University, Pullman, Washington 99163, United States
| | - Amit Bandyopadhyay
- W. M. Keck Biomedical Materials Research Laboratory, School of Mechanical and Materials Engineering, Washington State University, Pullman, Washington 99163, United States
| | - Stuart B Goodman
- Department of Orthopaedic Surgery, Stanford Medicine Outpatient Center, Redwood City, California 94063, United States
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13
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Yadav N, Singh A, Kaushik M. Hydrothermal synthesis and characterization of magnetic Fe 3O 4 and APTS coated Fe 3O 4 nanoparticles: physicochemical investigations of interaction with DNA. J Mater Sci Mater Med 2020; 31:68. [PMID: 32705385 DOI: 10.1007/s10856-020-06405-6] [Citation(s) in RCA: 4] [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] [Subscribe] [Scholar Register] [Received: 01/30/2020] [Accepted: 07/12/2020] [Indexed: 06/11/2023]
Abstract
Magnetic nanoparticles (MNPs) especially iron oxide (Fe3O4) NPs have quite extensively been used for in vivo delivery of biomolecules and drugs because of their high bioconjugation efficiency. In this study, Fe3O4 NPs and (3-Aminopropyl) triethoxysilane (APTS) coated Fe3O4 NPs were synthesized and their interaction with Calf thymus (Ct) DNA has been studied in order to understand their usage in biomedical applications. Hydrothermal method was used for the NPs synthesis. Characterization of NPs was done using techniques like UV-Visible spectroscopy, FTIR spectroscopy, FE-SEM, EDAX, Zeta Sizer and powder XRD. Further, interaction studies of NPs with Ct-DNA were investigated using various physicochemical techniques. In UV-Visible studies, hypochromicity with binding constant 3.2 × 105 M-1 was observed. Binding constants calculated using fluorescence studies were found to be k = 3.2 × 104 M-1, 2.9 × 104 M-1 at 293 and 323 K respectively. Results of UV-Visible and fluorescence studies were in correlation with other techniques like UV-TM and CD. All studies suggested alteration in DNA conformation on interaction with surface engineered Fe3O4 NPs, stabilizing DNA-NPs conjugate via partial intercalation and electrostatic interactions. This study may facilitate our understanding regarding the physicochemical properties and DNA-binding ability of APTS-Fe3O4 NPs for their further application in magnetosensitive biosensing and drug delivery. Iron oxide based magnetic nanoparticles are well known for their excellent bio-conjugation efficiency and therefore APTS-Fe3O4 NPs were synthesized via very simple and benign hydrothermal method. Further, the interaction of APTS-Fe3O4 NPs with calf thymus DNA was studied using various physicochemical techniques to explore their potential in biomedical applications.
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Affiliation(s)
- Neelam Yadav
- Nano-bioconjugate Chemistry Lab, Cluster Innovation Centre, University of Delhi, Delhi, India
- Department of Chemistry, University of Delhi, Delhi, India
| | - Amit Singh
- Nano-bioconjugate Chemistry Lab, Cluster Innovation Centre, University of Delhi, Delhi, India
- Department of Chemistry, University of Delhi, Delhi, India
| | - Mahima Kaushik
- Nano-bioconjugate Chemistry Lab, Cluster Innovation Centre, University of Delhi, Delhi, India.
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14
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Jessen SL, Friedemann MC, Mullen AE, Ginn-Hedman AM, Herting SM, Maitland DJ, Clubb FJ. Micro-CT and histopathology methods to assess host response of aneurysms treated with shape memory polymer foam-coated coils versus bare metal coil occlusion devices. J Biomed Mater Res B Appl Biomater 2020; 108:2238-2249. [PMID: 31961062 PMCID: PMC7379400 DOI: 10.1002/jbm.b.34561] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [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: 06/04/2019] [Revised: 12/04/2019] [Accepted: 01/07/2020] [Indexed: 11/06/2022]
Abstract
Recent studies utilizing shape memory polymer foams to coat embolizing coils have shown potential benefits over current aneurysm treatments. In the current study utilizing a rabbit-elastase aneurysm model, the performance of test article (foam-coated coil [FCC]) and control (bare platinum coils [BPCs]) devices were compared at 30, 90, and 180 days using micro-CT and histological assessments. The host response was measured by identifying the cells regionally present within the aneurysm, and assessing the degree of residual debris and connective tissue. The 3D reconstructions of aneurysms provided context for histologic findings, and aided in the overall aneurysm assessment. At all time points, >75% of the cells categorized in each aneurysm were associated with a bioactive yet biocompatible host response (vs. the remainder of cells that were associated with acute inflammation). The extracellular matrix exhibited a transition from residual fibrin at 30 days to a greater degree of connective tissue at 90 and 180 days. Although the control BPC-treated aneurysms exhibited a greater degree of connective tissue at the earliest time point examined (30 days), by 180 days, the FCC-treated aneurysms had more connective tissue and less debris overall than the control aneurysms. When considering cell types and extracellular matrix composition, the overall host response scores were significantly better in FCC-treated aneurysms at the later time point. Based on the results of these metrics, the FCC device may lead to an advanced tissue remodeling response over BPC occlusion devices.
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Affiliation(s)
- Staci L. Jessen
- Department of Veterinary Pathobiology, Texas A&M University, College Station, Texas
- Department of Biomedical Engineering, Texas A&M University, College Station, Texas
| | - Molly C. Friedemann
- Department of Veterinary Pathobiology, Texas A&M University, College Station, Texas
| | - Annmarie E. Mullen
- Department of Biomedical Engineering, Texas A&M University, College Station, Texas
| | | | - Scott M. Herting
- Department of Biomedical Engineering, Texas A&M University, College Station, Texas
| | - Duncan J. Maitland
- Department of Biomedical Engineering, Texas A&M University, College Station, Texas
| | - Fred J. Clubb
- Department of Veterinary Pathobiology, Texas A&M University, College Station, Texas
- Department of Biomedical Engineering, Texas A&M University, College Station, Texas
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15
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Lu X, Xiong S, Chen Y, Zhao F, Hu Y, Guo Y, Wu B, Huang P, Yang B. Effects of statherin on the biological properties of titanium metals subjected to different surface modification. Colloids Surf B Biointerfaces 2020; 188:110783. [PMID: 32004907 DOI: 10.1016/j.colsurfb.2020.110783] [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] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2019] [Revised: 12/23/2019] [Accepted: 01/07/2020] [Indexed: 12/13/2022]
Abstract
The failure of dental implants is usually caused by bacteria infection, poor bioactivity and biocompatibility. It is a common phenomenon clinically. Statherin, a salivary protein, plays a crucial role of mediator between materials and cells/bacteria. However, the conformation of statherin might be changed by the implants in vivo. In this study, we investigated the effects of statherin on the bioactivities, antibacterial abilities and biocompatibilities of the titanium metals and the reaction mechanism. We found that the conformation of statherin was mainly influenced by surface composition, surface structure, surface roughness, surface hydrophilia and Ti-OH groups of materials. Statherin could decrease the cell biocompatibility of the titanium metals including pure titanium (PT), anodic oxidation (AO), sandblasting and etching (SLA) and plasma spraying hydroxyapatite (HA) coating in HGF cell experiments, regulate the bio-mineralization ability of HA coating in SBF, and enhance the antibacterial properties of PT and HA coating. This study revealed that surface properties of materials could change the conformation of statherin, which influenced the bioactivities, antibacterial properties and biocompatibilities of the materials in return.
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Affiliation(s)
- Xugang Lu
- Engineering Research Center in Biomaterials, Sichuan University, Chengdu, 610064, China; National Engineering Research Center for Biomaterials, Chengdu, 610064, China; Sichuan Guojia Biomaterials Co., Ltd, Chengdu, 610064, China
| | - Shibing Xiong
- Engineering Research Center in Biomaterials, Sichuan University, Chengdu, 610064, China; National Engineering Research Center for Biomaterials, Chengdu, 610064, China; Sichuan Guojia Biomaterials Co., Ltd, Chengdu, 610064, China
| | - Yangmei Chen
- Engineering Research Center in Biomaterials, Sichuan University, Chengdu, 610064, China; National Engineering Research Center for Biomaterials, Chengdu, 610064, China; Sichuan Guojia Biomaterials Co., Ltd, Chengdu, 610064, China
| | - Fenghua Zhao
- Engineering Research Center in Biomaterials, Sichuan University, Chengdu, 610064, China; National Engineering Research Center for Biomaterials, Chengdu, 610064, China; Sichuan Guojia Biomaterials Co., Ltd, Chengdu, 610064, China
| | - Yi Hu
- Engineering Research Center in Biomaterials, Sichuan University, Chengdu, 610064, China; National Engineering Research Center for Biomaterials, Chengdu, 610064, China; Sichuan Guojia Biomaterials Co., Ltd, Chengdu, 610064, China
| | - Yuqiang Guo
- Engineering Research Center in Biomaterials, Sichuan University, Chengdu, 610064, China; National Engineering Research Center for Biomaterials, Chengdu, 610064, China; Sichuan Guojia Biomaterials Co., Ltd, Chengdu, 610064, China
| | - Boyao Wu
- Engineering Research Center in Biomaterials, Sichuan University, Chengdu, 610064, China; National Engineering Research Center for Biomaterials, Chengdu, 610064, China; Sichuan Guojia Biomaterials Co., Ltd, Chengdu, 610064, China
| | - Ping Huang
- Panzhihua International Research Institute of Vanadium and Titanium, Panzhihua University, 617000, Panzhihua, Sichuan, China
| | - Bangcheng Yang
- Engineering Research Center in Biomaterials, Sichuan University, Chengdu, 610064, China; National Engineering Research Center for Biomaterials, Chengdu, 610064, China; Sichuan Guojia Biomaterials Co., Ltd, Chengdu, 610064, China; Jiangsu Collaborative Innovation Center of Biomedical Functional Materials, Nanjing Normal University, Nanjing, 210046, China.
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16
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Tao Z, Zhou W, Wu X, Lu H, Ma N, Li Y, Zhang R, Yang M, Xu HG. Local administration of aspirin improves osseointegration of hydroxyapatite-coated titanium implants in ovariectomized rats through activation of the Notch signaling pathway. J Biomater Appl 2019; 34:1009-1018. [PMID: 31757183 DOI: 10.1177/0885328219889630] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Affiliation(s)
- Zhoushan Tao
- Department of Trauma orthopedics, The First Affiliated Hospital of Wannan Medical College, Yijishan Hospital, Anhui, People's Republic of China
| | - Wanshu Zhou
- Department of Geriatrics, The Second Affiliated Hospital of Wannan Medical College, Anhui, People's Republic of China
| | - Xingjing Wu
- Department of Trauma orthopedics, The First Affiliated Hospital of Wannan Medical College, Yijishan Hospital, Anhui, People's Republic of China
| | - Hanli Lu
- Department of Trauma orthopedics, The First Affiliated Hospital of Wannan Medical College, Yijishan Hospital, Anhui, People's Republic of China
| | - Nengfeng Ma
- Department of Trauma orthopedics, The First Affiliated Hospital of Wannan Medical College, Yijishan Hospital, Anhui, People's Republic of China
| | - Yang Li
- Department of Trauma orthopedics, The First Affiliated Hospital of Wannan Medical College, Yijishan Hospital, Anhui, People's Republic of China
| | - Ruotian Zhang
- Department of Trauma orthopedics, The First Affiliated Hospital of Wannan Medical College, Yijishan Hospital, Anhui, People's Republic of China
| | - Min Yang
- Department of Trauma orthopedics, The First Affiliated Hospital of Wannan Medical College, Yijishan Hospital, Anhui, People's Republic of China
| | - Hong-Guang Xu
- Department of Spine Surgery, Spine Research Center of Wannan Medical College, Key Laboratory of Non-coding RNA Transformation Research of Anhui Higher Education Institution, Yijishan hospital of Wannan Medical College, Anhui, People's Republic of China
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17
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Choy S, Lam DV, Lee SM, Hwang DS. Prolonged Biodegradation and Improved Mechanical Stability of Collagen via Vapor-Phase Ti Stitching for Long-Term Tissue Regeneration. ACS Appl Mater Interfaces 2019; 11:38440-38447. [PMID: 31550884 DOI: 10.1021/acsami.9b12196] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [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: 05/20/2023]
Abstract
Collagen, one of the most popular biomedical materials, exhibits rapid biodegradation accompanied by a notable decrease of mechanical stability in the human body. This is a key challenge for its use in large-sized tissue regeneration, which takes a long time. In order to resolve this problem, we introduced vapor-phase titanium (Ti) derivatives into the interchain regions in collagen via TiO2 atomic layer deposition (ALD), which has been widely used for thin-film deposition. The introduced Ti simultaneously enhanced both the tensile strength (∼384.45 MPa) and Young's modulus (∼1.56 GPa) by approximately 29 and 26% compared to the pristine commercial collagen membrane. In vitro tests demonstrated that approximately 31% of Ti-infiltrated collagen is retained after 4 weeks, whereas the pristine commercial collagen rapidly degrades by up to 90% within 1 week. The in vivo biodegradation rate was greatly improved and inversely proportional to the number of TiO2 ALD cycles. Moreover, bone mineralization, which is observed during the late stage of bone healing, appeared only in the Ti-infiltrated collagen. We believe that our simple vapor-phase treatment method could be widely used with xenograft materials, which typically require adequate biodegradation rates and stable mechanical properties.
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Affiliation(s)
| | - Do Van Lam
- Department of Nanomechanics , Korea Institute of Machinery and Materials (KIMM) , 156 Gajeongbuk-ro , Yuseong-gu, Daejeon 34103 , Korea
- Nano Mechatronics , Korea University of Science and Technology (UST) , 217 Gajeongbuk-ro , Yuseong-gu, Daejeon 34113 , Korea
| | - Seung-Mo Lee
- Department of Nanomechanics , Korea Institute of Machinery and Materials (KIMM) , 156 Gajeongbuk-ro , Yuseong-gu, Daejeon 34103 , Korea
- Nano Mechatronics , Korea University of Science and Technology (UST) , 217 Gajeongbuk-ro , Yuseong-gu, Daejeon 34113 , Korea
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18
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Sánchez-Pech JC, Rosales-Ibáñes R, Cauich-Rodriguez JV, Carrillo-Escalante HJ, Rodríguez-Navarrete A, Avila-Ortega A, Hernández-Sánchez F. Design, synthesis, characterization, and cytotoxicity of PCL/PLGA scaffolds through plasma treatment in the presence of pyrrole for possible use in urethral tissue engineering. J Biomater Appl 2019; 34:840-850. [PMID: 31630603 DOI: 10.1177/0885328219882638] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Affiliation(s)
| | - Raúl Rosales-Ibáñes
- Facultad de Estudios Superiores Iztacala, Universidad Nacional Autonoma de Mexico, Ciudad de Mexico, Mexico
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19
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Affiliation(s)
- Qingxi Hu
- 1 Rapid Manufacturing Engineering Center, School of Mechatronical Engineering and Automation, Shanghai University, Shanghai, China
- 2 Shanghai Key Laboratory of Intelligent Manufacturing and Robotics, Shanghai University, Shanghai, China
- 3 National Demonstration Center for Experimental Engineering Training Education, Shanghai University, Shanghai, China
| | - Chuang Wu
- 1 Rapid Manufacturing Engineering Center, School of Mechatronical Engineering and Automation, Shanghai University, Shanghai, China
| | - Haiguang Zhang
- 1 Rapid Manufacturing Engineering Center, School of Mechatronical Engineering and Automation, Shanghai University, Shanghai, China
- 2 Shanghai Key Laboratory of Intelligent Manufacturing and Robotics, Shanghai University, Shanghai, China
- 3 National Demonstration Center for Experimental Engineering Training Education, Shanghai University, Shanghai, China
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20
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Zhang Y, Wang J, Xiao J, Fang T, Hu N, Li M, Deng L, Cheng Y, Zhu Y, Cui W. An electrospun fiber-covered stent with programmable dual drug release for endothelialization acceleration and lumen stenosis prevention. Acta Biomater 2019; 94:295-305. [PMID: 31195144 DOI: 10.1016/j.actbio.2019.06.008] [Citation(s) in RCA: 35] [Impact Index Per Article: 7.0] [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: 03/09/2019] [Revised: 05/28/2019] [Accepted: 06/07/2019] [Indexed: 11/17/2022]
Abstract
Aneurysmal subarachnoid hemorrhage (SAH) causes high rates of mortality and morbidity. A covered stent is an effective endovascular treatment for complicated aneurysms intractable to endovascular coiling and surgical clipping. However, in-stent restenosis and delayed endothelialization are the main challenges contributing to its safety. In this study, we designed a biofunctional stent covered with dual drug-loaded electrospun fibers to achieve programmed vascular endothelial growth factor (VEGF) and paclitaxel (PTX) release for the early promotion of stent endothelialization and long-term inhibition of stenosis caused by smooth muscle hyperplasia. By encapsulating PTX-loaded mesoporous silica nanoparticles (MSNs) within electrospun polylactic acid (PLA) fibers, the release period of PTX was effectively extended. Furthermore, VEGF was conjugated onto the surface of the membrane by reacting with polydopamine (PDA) for quick release. The in vitro drug release profile revealed the sustained release of PTX, which persisted for 63 days without early burst release, while up to 87.05% of VEGF was rapidly released within 3 days. After 6 days of incubation, cell experiments demonstrated that the dual drug-loaded scaffold effectively prompted endothelial cell proliferation (488% vs. 386% in the control group, P = 0.001) and inhibited the proliferation of smooth muscle cells (SMCs) using the 21-day extracts (155% vs. 303% in the control group, P = 0.039). Animal studies showed that compared to bare stents, the drug-loaded covered stents improved the immediate- and mid-term complete aneurysm occlusion rates (P < 0.05). The drug-loaded covered stents also showed earlier endothelialization promotion and better lumen restenosis than normal covered stents (0% vs. 25%, P = 0.29) for 12 weeks. Overall, a programmed dual drug-loaded scaffold that effectively occluded the aneurysm sac was developed in this study, and the discrete release of VEGF and PTX promoted endothelialization and prevented in-stent stenosis. This study provided a new method to improve the biosafety of implanted covered stents for the treatment of intracranial aneurysms. STATEMENT OF SIGNIFICANCE: Aneurysmal subarachnoid hemorrhage (SAH) is one of the most common hemorrhage stroke resulted in a nearly 40% mortality and 33% morbidity due to sudden rupture of an intracranial aneurysm. Endovascular coil embolism is a popular treatment for aneurysm but this technique run high risk of bleeding, mass effect, low complete occlusion rate and higher recanalization rate due to its operation conducted within aneurysm sac. A bio-functional membrane knitted by dual-drug loaded electrospun fibers covered on a stent was designed to realize programed vascular endothelial growth factor and paclitaxel release for the early promotion of vascular endothelium and long-term inhibition of stenosis caused by smooth muscle hyperplasia. This study provides new method to improve the biosafety of covered stent insertion for the treatment of intracranial aneurysms.
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Affiliation(s)
- Yiran Zhang
- Department of Radiology, Shanghai Jiao Tong University Affiliated Sixth People's Hospital, No. 600, Yishan Road, Shanghai 200233, PR China; Shanghai Institute of Traumatology and Orthopaedics, Shanghai Key Laboratory for Prevention and Treatment of Bone and Joint Diseases, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, 197 Ruijin 2nd Road, Shanghai 200025, PR China
| | - Jienan Wang
- Department of Radiology, Shanghai Jiao Tong University Affiliated Sixth People's Hospital, No. 600, Yishan Road, Shanghai 200233, PR China
| | - Junyuan Xiao
- Department of Radiology, Shanghai Jiao Tong University Affiliated Sixth People's Hospital, No. 600, Yishan Road, Shanghai 200233, PR China
| | - Tonglei Fang
- Department of Radiology, Shanghai Jiao Tong University Affiliated Sixth People's Hospital, No. 600, Yishan Road, Shanghai 200233, PR China
| | - Nan Hu
- Department of Intervention and Vascular Surgery, Shanghai Tenth People's Hospital Affiliated to Tongji University, 301 Yanchang Road, Shanghai 200072, PR China
| | - Minghua Li
- Department of Radiology, Shanghai Jiao Tong University Affiliated Sixth People's Hospital, No. 600, Yishan Road, Shanghai 200233, PR China
| | - Lianfu Deng
- Shanghai Institute of Traumatology and Orthopaedics, Shanghai Key Laboratory for Prevention and Treatment of Bone and Joint Diseases, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, 197 Ruijin 2nd Road, Shanghai 200025, PR China
| | - Yingsheng Cheng
- Department of Radiology, Shanghai Jiao Tong University Affiliated Sixth People's Hospital, No. 600, Yishan Road, Shanghai 200233, PR China
| | - Yueqi Zhu
- Department of Radiology, Shanghai Jiao Tong University Affiliated Sixth People's Hospital, No. 600, Yishan Road, Shanghai 200233, PR China.
| | - Wenguo Cui
- Shanghai Institute of Traumatology and Orthopaedics, Shanghai Key Laboratory for Prevention and Treatment of Bone and Joint Diseases, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, 197 Ruijin 2nd Road, Shanghai 200025, PR China.
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Xue Y, Wu M, Liu Z, Song J, Luo S, Li H, Li Y, Jin L, Guan B, Lin M, Chen F, Jin C, Liu D, Li Y, Zhang X. In vitro and in vivo evaluation of chitosan scaffolds combined with simvastatin-loaded nanoparticles for guided bone regeneration. J Mater Sci Mater Med 2019; 30:47. [PMID: 30980130 DOI: 10.1007/s10856-019-6249-3] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/27/2018] [Accepted: 04/03/2019] [Indexed: 06/09/2023]
Abstract
The objective of this study was to fabricate and characterize chitosan combined with different amounts of simvastatin-loaded nanoparticles and to investigate their potential for guided bone regeneration in vitro and in vivo. Different SIM-CSN formulations were combined into a chitosan scaffold (SIM-CSNs-S), and the morphology, simvastatin release profile, and effect on cell proliferation and differentiation were investigated. For in vivo experiments, ectopic osteogenesis and the critical-size cranial defect model in SD rats were chosen to evaluate bone regeneration potential. All three SIM-CSNs-S formulations had a porous structure and exhibited sustained simvastatin release. CSNs-S showed excellent degradation and biocompatibility characteristics. The 4 mg SIM-CSNs-S formulation stimulated higher BMSC ALP activity levels, demonstrated significantly earlier collagen enhancement, and led to faster bone regeneration than the other formulations. SIM-CSNs-S should have a significant effect on bone regeneration.
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Affiliation(s)
- Yan Xue
- School and Hospital of Stomatology, Tianjin Medical University, 12 Observatory Road, 300070, Tianjin, China
| | - Mingyao Wu
- LangFang Health Vocational College, South Siguang Road, 065001, Langfang, China
| | - Zongren Liu
- School and Hospital of Stomatology, Tianjin Medical University, 12 Observatory Road, 300070, Tianjin, China
- Department of Stomatology of Tianjin Medical University General Hospital, Binhai Hospital, No. 28, Hangu hospital road, Binhai new district, 300480, Tianjin, China
| | - Jinhua Song
- School and Hospital of Stomatology, Tianjin Medical University, 12 Observatory Road, 300070, Tianjin, China
| | - Shuyu Luo
- School and Hospital of Stomatology, Tianjin Medical University, 12 Observatory Road, 300070, Tianjin, China
| | - Hongjie Li
- School and Hospital of Stomatology, Tianjin Medical University, 12 Observatory Road, 300070, Tianjin, China
| | - Yuan Li
- School and Hospital of Stomatology, Tianjin Medical University, 12 Observatory Road, 300070, Tianjin, China
| | - Lichun Jin
- School and Hospital of Stomatology, Tianjin Medical University, 12 Observatory Road, 300070, Tianjin, China
| | - Binbin Guan
- Department of Stomatology of Tianjin Medical University General Hospital, No.154, FeiLong road, 300052, Tianjin, China
| | - Mingli Lin
- School and Hospital of Stomatology, Tianjin Medical University, 12 Observatory Road, 300070, Tianjin, China
| | - Fuyu Chen
- School and Hospital of Stomatology, Tianjin Medical University, 12 Observatory Road, 300070, Tianjin, China
| | - Chenxin Jin
- School and Hospital of Stomatology, Tianjin Medical University, 12 Observatory Road, 300070, Tianjin, China
| | - Deping Liu
- Department of Cardiology, Beijing Hospital, National Center of Gerontology, 100730, Beijing, China.
| | - Yanqiu Li
- School and Hospital of Stomatology, Tianjin Medical University, 12 Observatory Road, 300070, Tianjin, China.
| | - Xu Zhang
- School and Hospital of Stomatology, Tianjin Medical University, 12 Observatory Road, 300070, Tianjin, China.
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22
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Joh DY, Zimmers Z, Avlani M, Heggestad JT, Aydin HB, Ganson N, Kumar S, Fontes C, Achar RK, Hershfield MS, Hucknall AM, Chilkoti A. Architectural Modification of Conformal PEG-Bottlebrush Coatings Minimizes Anti-PEG Antigenicity While Preserving Stealth Properties. Adv Healthc Mater 2019; 8:e1801177. [PMID: 30908902 PMCID: PMC6819148 DOI: 10.1002/adhm.201801177] [Citation(s) in RCA: 38] [Impact Index Per Article: 7.6] [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: 10/13/2018] [Revised: 02/12/2019] [Indexed: 01/18/2023]
Abstract
Poly(ethylene glycol) (PEG), a linear polymer known for its "stealth" properties, is commonly used to passivate the surface of biomedical implants and devices, and it is conjugated to biologic drugs to improve their pharmacokinetics. However, its antigenicity is a growing concern. Here, the antigenicity of PEG is investigated when assembled in a poly(oligoethylene glycol) methacrylate (POEGMA) "bottlebrush" configuration on a planar surface. Using ethylene glycol (EG) repeat lengths of the POEGMA sidechains as a tunable parameter for optimization, POEGMA brushes with sidechain lengths of two and three EG repeats are identified as the optimal polymer architecture to minimize binding of anti-PEG antibodies (APAs), while retaining resistance to nonspecific binding by bovine serum albumin and cultured cells. Binding of backbone- versus endgroup-selective APAs to POEGMA brushes is further investigated, and finally the antigenicity of POEGMA coatings is assessed against APA-positive clinical plasma samples. These results are applied toward fabricating immunoassays on POEGMA surfaces with minimal reactivity toward APAs while retaining a low limit-of-detection for the analyte. Taken together, these results offer useful design concepts to reduce the antigenicity of polymer brush-based surface coatings used in applications involving human or animal matrices.
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Affiliation(s)
- Daniel Y. Joh
- Department of Biomedical Engineering, Pratt School of Engineering, Duke University, Durham NC 27708 USA
| | - Zackary Zimmers
- Department of Biomedical Engineering, Pratt School of Engineering, Duke University, Durham NC 27708 USA
| | - Manav Avlani
- Department of Biomedical Engineering, Pratt School of Engineering, Duke University, Durham NC 27708 USA
| | - Jacob T. Heggestad
- Department of Biomedical Engineering, Pratt School of Engineering, Duke University, Durham NC 27708 USA
| | - Hakan B. Aydin
- Department of Biomedical Engineering, Pratt School of Engineering, Duke University, Durham NC 27708 USA
| | - Nancy Ganson
- Department of Medicine, Division of Rheumatology, Duke University Medical Center, Durham, NC 27710 USA
| | - Shourya Kumar
- Department of Biomedical Engineering, Pratt School of Engineering, Duke University, Durham NC 27708 USA
| | - Cassio Fontes
- Department of Biomedical Engineering, Pratt School of Engineering, Duke University, Durham NC 27708 USA
| | - Rohan K. Achar
- Department of Biomedical Engineering, Pratt School of Engineering, Duke University, Durham NC 27708 USA
| | - Michael S. Hershfield
- Department of Medicine, Division of Rheumatology, Duke University Medical Center, Durham, NC 27710 USA
- Department of Biochemistry, Duke University School of Medicine, Durham NC 27710 USA
| | - Angus M. Hucknall
- Department of Biomedical Engineering, Pratt School of Engineering, Duke University, Durham NC 27708 USA
| | - Ashutosh Chilkoti
- Department of Biomedical Engineering, Pratt School of Engineering, Duke University, Durham NC 27708 USA
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Li R, Elsabahy M, Song Y, Wang H, Su L, Letteri RA, Khan S, Heo GS, Sun G, Liu Y, Wooley KL. Functional, Degradable Zwitterionic Polyphosphoesters as Biocompatible Coating Materials for Metal Nanostructures. Langmuir 2019; 35:1503-1512. [PMID: 30346776 DOI: 10.1021/acs.langmuir.8b02033] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/24/2023]
Abstract
A zwitterionic polyphosphoester (zPPE), specifically l-cysteine-functionalized poly(but-3-yn-1-yloxy)-2-oxo-1,3,2-dioxaphospholane (zPBYP), has been developed as a poly(ethylene glycol) (PEG) alternative coating material for gold nanoparticles (AuNPs), the most extensively investigated metal nanoparticulate platform toward molecular imaging, photothermal therapy, and drug delivery applications. Thiol-yne conjugation of cysteine transformed an initial azido-terminated and alkynyl-functionalized PBYP homopolymer into zPBYP, offering hydrolytic degradability, biocompatibility, and versatile reactive moieties for installation of a range of functional groups. Despite minor degradation during purification, zPPEs were able to stabilize AuNPs presumably through multivalent interactions between combinations of the side chain zwitterions (thioether and phosphoester groups of the zPPEs with the AuNPs). 31P NMR studies in D2O revealed ca. 20% hydrolysis of the phosphoester moieties of the repeat units had occurred during the workup and purification by aqueous dialysis at pH 3 over ca. 1 d, as observed by the 31P signal of the phosphotriesters resonating at ca. -0.5 to -1.7 shifting downfield to ca. 1.1 to -0.4 ppm, attributed to transformation to phosphates. Further hydrolysis of side chain and backbone units proceeded to an extent of ca. 75% over the next 2 d in nanopure water (pH 5-6). The NMR degradation results were consistent with the broadening and red-shift of the surface plasmon resonance (SPR) observed by UV-vis spectroscopy of the zPPE-coated AuNPs in water over time. All AuNP formulations in this study, including those with citrate, PEG, and zPPE coatings, exhibited negligible immunotoxicity, as determined by cytokine overexpression in the presence of the nanostructures relative to those in cell culture medium. Notably, the zPPE-coated AuNPs displayed superior antifouling properties, as assessed by the extent of cytokine adsorption relative to both the PEGylated and citrate-coated AuNPs. Taken together, the physicochemical and biological evaluations of zPPE-coated AuNPs in conjunction with PEGylated and citrate-coated analogues indicate the promise of zPPEs as favorable alternatives to PEG coatings, with negligible immunotoxicity, good antifouling performance, and versatile reactive groups that enable the preparation of highly tailored nanomaterials for diverse applications.
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Affiliation(s)
- Richen Li
- Departments of Chemistry, Chemical Engineering, and Materials Science & Engineering, Laboratory for Synthetic-Biologic Interactions , Texas A&M University , College Station , Texas 77842 , United States
| | - Mahmoud Elsabahy
- Departments of Chemistry, Chemical Engineering, and Materials Science & Engineering, Laboratory for Synthetic-Biologic Interactions , Texas A&M University , College Station , Texas 77842 , United States
- Department of Pharmaceutics, Faculty of Pharmacy , Assiut University , 71515 Assiut , Egypt
| | - Yue Song
- Departments of Chemistry, Chemical Engineering, and Materials Science & Engineering, Laboratory for Synthetic-Biologic Interactions , Texas A&M University , College Station , Texas 77842 , United States
| | - Hai Wang
- Departments of Chemistry, Chemical Engineering, and Materials Science & Engineering, Laboratory for Synthetic-Biologic Interactions , Texas A&M University , College Station , Texas 77842 , United States
| | - Lu Su
- Departments of Chemistry, Chemical Engineering, and Materials Science & Engineering, Laboratory for Synthetic-Biologic Interactions , Texas A&M University , College Station , Texas 77842 , United States
| | - Rachel A Letteri
- Departments of Chemistry, Chemical Engineering, and Materials Science & Engineering, Laboratory for Synthetic-Biologic Interactions , Texas A&M University , College Station , Texas 77842 , United States
| | - Sarosh Khan
- Departments of Chemistry, Chemical Engineering, and Materials Science & Engineering, Laboratory for Synthetic-Biologic Interactions , Texas A&M University , College Station , Texas 77842 , United States
| | - Gyu Seong Heo
- Department of Radiology , Washington University , St. Louis , Missouri 63110 , United States
| | - Guorong Sun
- Departments of Chemistry, Chemical Engineering, and Materials Science & Engineering, Laboratory for Synthetic-Biologic Interactions , Texas A&M University , College Station , Texas 77842 , United States
| | - Yongjian Liu
- Department of Radiology , Washington University , St. Louis , Missouri 63110 , United States
| | - Karen L Wooley
- Departments of Chemistry, Chemical Engineering, and Materials Science & Engineering, Laboratory for Synthetic-Biologic Interactions , Texas A&M University , College Station , Texas 77842 , United States
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24
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Baygar T, Sarac N, Ugur A, Karaca IR. Antimicrobial characteristics and biocompatibility of the surgical sutures coated with biosynthesized silver nanoparticles. Bioorg Chem 2018; 86:254-258. [PMID: 30716622 DOI: 10.1016/j.bioorg.2018.12.034] [Citation(s) in RCA: 67] [Impact Index Per Article: 11.2] [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: 10/05/2018] [Revised: 11/26/2018] [Accepted: 12/26/2018] [Indexed: 01/20/2023]
Abstract
Surgical sutures play important role during the wound healing of the surgical sites which are known to be sensitive to microbial infections. Silver nanoparticles (AgNPs) have been recently used as promising agents against multiple-drug resistant microorganisms. This study was designed to coat the sutures with silver nanoparticles obtained via a green synthesis approach. Microbial-mediated biological synthesis of AgNPs were carried out ecofriendly using Streptomyces sp. AU2 cell-free extract and deposited on silk sutures through an in situ process. Sutures coated with biosyntehsized AgNP (bio-AgNP coated sutures) were characterized using Scanning Electron Microscopy (SEM) and elemantal analysis were carried out using Energy Dispersive X-ray Spectroscopy (EDS). The silver amount released by the bio-AgNP coated sutures was calculated by Inductively Coupled Plasma-Mass Spectroscopy (ICP-MS) throughout a degradation process. Antimicrobial potential of the bio-AgNP coated sutures was determined against common pathogenic microorganisms Candida albicans, Escherichia coli and Staphylococcus aureus. To determine the biocompatibility/cytotoxicty of the bio-AgNP coated sutures, the MTT (3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium) assay was used through an indirect test method; that the elutions obtained by the extraction of the sutures at 1, 4, 8 and 10. days and were placed in contact with 3T3 fibroblast cell culture. To best of our knowledge, this is the first report about coating of the nonabsorbable silk sutures with silver nanoparticles biosynthesized using a microbial extract.
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Affiliation(s)
- Tuba Baygar
- Material Research Laboratory, Research Laboratories Center, Mugla Sitki Kocman University, Mugla, Turkey.
| | - Nurdan Sarac
- Department of Biology, Faculty of Science, Mugla Sitki Kocman University, Mugla, Turkey.
| | - Aysel Ugur
- Section of Medical Microbiology, Department of Basic Sciences, Faculty of Dentistry, Gazi University, Ankara, Turkey.
| | - Inci Rana Karaca
- Department of Oral and Maxillofacial Surgery, Faculty of Dentistry, Gazi University, Ankara, Turkey.
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Nakazawa M, Yamada M, Wakamura M, Egusa H, Sakurai K. Activation of Osteoblastic Function on Titanium Surface with Titanium-Doped Hydroxyapatite Nanoparticle Coating: An In Vitro Study. Int J Oral Maxillofac Implants 2018; 32:779-791. [PMID: 28708908 DOI: 10.11607/jomi.5421] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
PURPOSE Titanium-doped hydroxyapatite (TiHA) nanoparticles contain titanium atoms in the hydroxyapatite lattice, which can physicochemically functionalize the titanium surface without modification of the surface topography. This study aimed to evaluate the physicochemical properties of machined or microroughened titanium surfaces coated with TiHA nanoparticles and the functions of osteoblasts cultured on them. MATERIALS AND METHODS Titanium disks with commercially available surface topography, such as machined or sandblasted, large-grit, and acid-etched (SLA) surfaces, were coated with TiHA. The disks with original or TiHA-coated surfaces were evaluated in topography, wettability, and chemical composition. Osteoblastic cells from rat femurs were cultured on the disks and evaluated in proliferation and differentiation. RESULTS TiHA coating changed from hydrophobicity to hydrophilicity on both machined and SLA surfaces. Calcium and phosphate atoms were detected all over the surface with TiHA coating regardless of the surface topography. However, the considerable change in the inherent surface topographies was not observed on both types of surfaces after TiHA coating. Osteoblastic proliferative activity at day 4 was increased by TiHA coating on both types of surfaces. TiHA coating did not enhance expressions of bone matrix-related genes such as osteocalcin, osteopontin, bone sialoprotein, alkaline phosphatase, and collagen I. However, depositions of collagen, osteocalcin, and calcium in the culture at days 7 and 20 were increased on both types of surface topographies with TiHA coating. CONCLUSION TiHA coating enhanced extracellular matrix formation on smooth and microroughened titanium surfaces by increasing osteoblastic proliferative activity without the deterioration of differentiation through hydrophilic and chemical functionalization.
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Wei X, Ying M, Dehaini D, Su Y, Kroll AV, Zhou J, Gao W, Fang RH, Chien S, Zhang L. Nanoparticle Functionalization with Platelet Membrane Enables Multifactored Biological Targeting and Detection of Atherosclerosis. ACS Nano 2018; 12:109-116. [PMID: 29216423 PMCID: PMC5859122 DOI: 10.1021/acsnano.7b07720] [Citation(s) in RCA: 182] [Impact Index Per Article: 30.3] [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: 05/18/2023]
Abstract
Cardiovascular disease represents one of the major causes of death across the global population. Atherosclerosis, one of its most common drivers, is characterized by the gradual buildup of arterial plaque over time, which can ultimately lead to life-threatening conditions. Given the impact of the disease on public health, there is a great need for effective and noninvasive imaging modalities that can provide valuable information on its biological underpinnings during development. Here, we leverage the role of platelets in atherogenesis to design nanocarriers capable of targeting multiple biological elements relevant to plaque development. Biomimetic nanoparticles are prepared by coating platelet membrane around a synthetic nanoparticulate core, the product of which is capable of interacting with activated endothelium, foam cells, and collagen. The effects are shown to be exclusive to platelet membrane-coated nanoparticles. These biomimetic nanocarriers are not only capable of efficiently localizing to well-developed atherosclerotic plaque, but can also target subclinical regions of arteries susceptible to plaque formation. Using a commonly employed magnetic resonance imaging contrast agent, live detection is demonstrated using an animal model of atherosclerosis. Ultimately, this strategy may be leveraged to better assess the development of atherosclerosis, offering additional information to help clinicians better manage the disease.
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Abstract
Elucidation of mechanisms of uptake of nanoparticles by cells and methods to prevent this uptake is essential for many applications of nanoparticles. Most recent studies have focused on the role of proteins that coat nanoparticles and have employed PEGylation, particularly dense coatings of PEG, to reduce protein opsonization and cell uptake. Here we show that small molecule coatings on metallic nanoparticles can markedly reduce cell uptake for very sparsely PEGylated nanoparticles. Similar results were obtained in media with and without proteins, suggesting that protein opsonization is not the primary driver of this phenomenon. The reduction in cell uptake is proportional to the degree of surface coverage by the small molecules. Probing cell uptake pathways using inhibitors suggested that the primary role of increased surface coverage is to reduce nanoparticles' interactions with the scavenger receptors. This work highlights an under-investigated mechanism of cell uptake that may have played a role in many other studies and also suggests that a wide variety of molecules can be used alongside PEGylation to stably passivate nanoparticle surfaces for low cell uptake.
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Affiliation(s)
| | | | - Jacob M. Berlin
- Corresponding Author: Jacob M. Berlin, Ph.D, Associate Professor, Division of Molecular Medicine, City of Hope, 1500 East Duarte Rd, Duarte, CA 91010, Phone [626/256-4673]
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28
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Schubert J, Chanana M. Coating Matters: Review on Colloidal Stability of Nanoparticles with Biocompatible Coatings in Biological Media, Living Cells and Organisms. Curr Med Chem 2018; 25:4553-4586. [PMID: 29852857 PMCID: PMC7040520 DOI: 10.2174/0929867325666180601101859] [Citation(s) in RCA: 60] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2017] [Revised: 03/13/2018] [Accepted: 04/18/2018] [Indexed: 12/21/2022]
Abstract
Within the last two decades, the field of nanomedicine has not developed as successfully as has widely been hoped for. The main reason for this is the immense complexity of the biological systems, including the physico-chemical properties of the biological fluids as well as the biochemistry and the physiology of living systems. The nanoparticles' physicochemical properties are also highly important. These differ profoundly from those of freshly synthesized particles when applied in biological/living systems as recent research in this field reveals. The physico-chemical properties of nanoparticles are predefined by their structural and functional design (core and coating material) and are highly affected by their interaction with the environment (temperature, pH, salt, proteins, cells). Since the coating material is the first part of the particle to come in contact with the environment, it does not only provide biocompatibility, but also defines the behavior (e.g. colloidal stability) and the fate (degradation, excretion, accumulation) of nanoparticles in the living systems. Hence, the coating matters, particularly for a nanoparticle system for biomedical applications, which has to fulfill its task in the complex environment of biological fluids, cells and organisms. In this review, we evaluate the performance of different coating materials for nanoparticles concerning their ability to provide colloidal stability in biological media and living systems.
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Affiliation(s)
- Jonas Schubert
- Address correspondence to these authors at the Department of Nanostructured Materials, Leibniz-Institut für Polymerforschung Dresden, Dresden, Germany and Department of Physical Chemistry II, University of Bayreuth, 95447 Bayreuth, Germany;E-mails: ;
| | - Munish Chanana
- Address correspondence to these authors at the Department of Nanostructured Materials, Leibniz-Institut für Polymerforschung Dresden, Dresden, Germany and Department of Physical Chemistry II, University of Bayreuth, 95447 Bayreuth, Germany;E-mails: ;
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29
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Zhu W, Zhao Y, Ma Q, Wang Y, Wu Z, Weng X. 3D-printed porous titanium changed femoral head repair growth patterns: osteogenesis and vascularisation in porous titanium. J Mater Sci Mater Med 2017; 28:62. [PMID: 28251470 DOI: 10.1007/s10856-017-5862-2] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/28/2016] [Accepted: 01/30/2017] [Indexed: 06/06/2023]
Abstract
Osteonecrosis of the femoral head (ONFH) is a major cause of morbidity, and total hip arthroplasty is both traumatic and expensive. Here, we created a gelatine scaffold embedded in uniquely shaped, 3D-printed porous titanium parts, which could attract and promote the proliferation of osteoblasts as well as bone regeneration, as the extracellular matrix (ECM) does in vivo. Interestingly, after hybridisation with platelets, the scaffold exhibited a low yet considerable rate of stable, safe and long-term growth factor release. Additionally, a novel ONFH model was constructed and verified. Scaffolds implanted in this model were found to accelerate bone repair. In conclusion, our scaffold successfully simulates the ECM and considerably accelerates bone regeneration, in which platelets play an indispensable role. We believe that platelets should be emphasised as carriers that may be employed to transport drugs, cytokines and other small molecules to target locations in vivo. In addition, this novel scaffold is a useful material for treating ONFH. An overview of the novel scaffold mimicking the extracellular environment in bone repair. a and b: A gelatine scaffold was cross-linked and freeze-dried within 3D-printed porous titanium. c: Platelets were coated onto the gelatine microscaffold after freeze-drying platelet-rich plasma. d: The microscaffold supported the migration of cells into the titanium pores and their subsequent growth, while the platelets slowly released cell factors, exerting bioactivity.
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Affiliation(s)
- Wei Zhu
- Department of Orthopaedics, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing, 100730, China
| | - Yan Zhao
- Department of Orthopaedics, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing, 100730, China
| | - Qi Ma
- Department of Orthopaedics, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing, 100730, China
| | - Yingjie Wang
- Department of Orthopaedics, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing, 100730, China
| | - Zhihong Wu
- Beijing Key Laboratory for Genetic Research of Bone and Joint Disease, Central Laboratory, Peking Union Medical College Hospital, Peking Union Medical College and Chinese Academy of Medical Sciences, No. 1 Shuaifuyuan, Beijing, 100730, P.R. China.
| | - Xisheng Weng
- Department of Orthopaedics, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing, 100730, China.
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30
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Barrios AC, Rico CM, Trujillo-Reyes J, Medina-Velo IA, Peralta-Videa JR, Gardea-Torresdey JL. Effects of uncoated and citric acid coated cerium oxide nanoparticles, bulk cerium oxide, cerium acetate, and citric acid on tomato plants. Sci Total Environ 2016; 563-564:956-64. [PMID: 26672385 DOI: 10.1016/j.scitotenv.2015.11.143] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/13/2015] [Revised: 11/25/2015] [Accepted: 11/26/2015] [Indexed: 05/22/2023]
Abstract
Little is known about the physiological and biochemical responses of plants exposed to surface modified nanomaterials. In this study, tomato (Solanum lycopersicum L.) plants were cultivated for 210days in potting soil amended with uncoated and citric acid coated cerium oxide nanoparticles (nCeO2, CA+nCeO2) bulk cerium oxide (bCeO2), and cerium acetate (CeAc). Millipore water (MPW), and citric acid (CA) were used as controls. Physiological and biochemical parameters were measured. At 500mg/kg, both the uncoated and CA+nCeO2 increased shoot length by ~9 and ~13%, respectively, while bCeO2 and CeAc decreased shoot length by ~48 and ~26%, respectively, compared with MPW (p≤0.05). Total chlorophyll, chlo-a, and chlo-b were significantly increased by CA+nCeO2 at 250mg/kg, but reduced by bCeO2 at 62.5mg/kg, compared with MPW. At 250 and 500mg/kg, nCeO2 increased Ce in roots by 10 and 7 times, compared to CA+nCeO2, but none of the treatments affected the Ce concentration in above ground tissues. Neither nCeO2 nor CA+nCeO2 affected the homeostasis of nutrient elements in roots, stems, and leaves or catalase and ascorbate peroxidase in leaves. CeAc at 62.5 and 125mg/kg increased B (81%) and Fe (174%) in roots, while at 250 and 500mg/kg, increased Ca in stems (84% and 86%, respectively). On the other hand, bCeO2 at 62.5 increased Zn (152%) but reduced P (80%) in stems. Only nCeO2 at 62.5mg/kg produced higher total number of tomatoes, compared with control and the rest of the treatments. The surface coating reduced Ce uptake by roots but did not affect its translocation to the aboveground organs. In addition, there was no clear effect of surface coating on fruit production. To our knowledge, this is the first study comparing the effects of coated and uncoated nCeO2 on tomato plants.
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Affiliation(s)
- Ana Cecilia Barrios
- Department of Chemistry, The University of Texas at El Paso, 500 W. University Avenue, El Paso, TX 79968, United States
| | - Cyren M Rico
- Department of Chemistry, The University of Texas at El Paso, 500 W. University Avenue, El Paso, TX 79968, United States; University of California Center for Environmental Implications of Nanotechnology (UC CEIN), The University of Texas at El Paso, 500 West University Ave., El Paso, TX 79968, United States
| | - Jesica Trujillo-Reyes
- Department of Chemistry, The University of Texas at El Paso, 500 W. University Avenue, El Paso, TX 79968, United States
| | - Illya A Medina-Velo
- Department of Chemistry, The University of Texas at El Paso, 500 W. University Avenue, El Paso, TX 79968, United States; University of California Center for Environmental Implications of Nanotechnology (UC CEIN), The University of Texas at El Paso, 500 West University Ave., El Paso, TX 79968, United States
| | - Jose R Peralta-Videa
- Department of Chemistry, The University of Texas at El Paso, 500 W. University Avenue, El Paso, TX 79968, United States; Environmental Science and Engineering Ph.D. Program, The University of Texas at El Paso, 500 W. University Avenue, El Paso, TX 79968, United States; University of California Center for Environmental Implications of Nanotechnology (UC CEIN), The University of Texas at El Paso, 500 West University Ave., El Paso, TX 79968, United States
| | - Jorge L Gardea-Torresdey
- Department of Chemistry, The University of Texas at El Paso, 500 W. University Avenue, El Paso, TX 79968, United States; Environmental Science and Engineering Ph.D. Program, The University of Texas at El Paso, 500 W. University Avenue, El Paso, TX 79968, United States; University of California Center for Environmental Implications of Nanotechnology (UC CEIN), The University of Texas at El Paso, 500 West University Ave., El Paso, TX 79968, United States.
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31
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Zan X, Sitasuwan P, Feng S, Wang Q. Effect of Roughness on in Situ Biomineralized CaP-Collagen Coating on the Osteogenesis of Mesenchymal Stem Cells. Langmuir 2016; 32:1808-1817. [PMID: 26795271 DOI: 10.1021/acs.langmuir.5b04245] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
Because of its outstanding osteo-conductive property, a calcium phosphate (CaP) coating has been used as an implant coating for bone tissue engineering. Nevertheless, the issues, such as harsh fabrication conditions, long-term stability and biocompatibility, and the requirement for expensive instruments, still exist in current coating techniques. To address these issues, the CaP coatings doped with collagen (CaP-Col) were in situ generated on polyelectrolyte multilayers (PEMs) by incubating PEMs in a mixture of the collagen, phosphate, and calcium ions. The resulting coatings have controllable physical properties (chemical composition, crystallinity, and roughness) and good stability before and after incubation with cell culture medium. We also found that both the cellular viability and osteogenesis of mesenchymal stem cells (MSCs) were closely related to the roughness of PEMs/CaP-Col, one of the easily ignored physical factors in current coating designs but very critical. The existed roughness window (between 18 ± 1.2 and 187 ± 7.3 nm) suitable for MSC proliferation on PEMs/CaP-Col coating and the optimal roughness (∼98 ± 3.5 nm) for MSC osteogenesis further demonstrated that the roughness was a critical factor for bone formation. Therefore, we envision that our exploration of the effects of surface roughness on MSC behaviors would provide better guidance for the future design of material coating and eventual medical success.
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Affiliation(s)
- Xingjie Zan
- Institute of Biomaterials and Engineering, Wenzhou Medical University , Chashan University Town, Wenzhou, Zhejiang Province 325035, P. R. China
- Wenzhou Institute of Biomaterials and Engineering , 16 Xinsan Rd Hi-tech Industry Park, Wenzhou, Zhejiang Province 325011, P. R. China
- Department of Chemistry and Biochemistry, University of South Carolina , Columbia, South Carolina 29208, United States
| | - Pongkwan Sitasuwan
- Department of Chemistry and Biochemistry, University of South Carolina , Columbia, South Carolina 29208, United States
| | - Sheng Feng
- Department of Chemistry and Biochemistry, University of South Carolina , Columbia, South Carolina 29208, United States
| | - Qian Wang
- Department of Chemistry and Biochemistry, University of South Carolina , Columbia, South Carolina 29208, United States
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32
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Melchiorri AJ, Hibino N, Yi T, Lee YU, Sugiura T, Tara S, Shinoka T, Breuer C, Fisher JP. Contrasting biofunctionalization strategies for the enhanced endothelialization of biodegradable vascular grafts. Biomacromolecules 2015; 16:437-46. [PMID: 25545620 PMCID: PMC4325601 DOI: 10.1021/bm501853s] [Citation(s) in RCA: 60] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2014] [Indexed: 01/26/2023]
Abstract
Surface modification of biodegradable vascular grafts is an important strategy to improve the in situ endothelialization of tissue engineered vascular grafts (TEVGs) and prevent major complications associated with current synthetic grafts. Important strategies for improving endothelialization include increasing endothelial cell mobilization and increased endothelial cell capture through biofunctionalization of TEVGs. The objective of this study was to assess two biofunctionalization strategies for improving endothelialization of biodegradable polyester vascular grafts. These techniques consisted of cross-linking heparin to graft surfaces to immobilize vascular endothelial growth factor (VEGF) or antibodies against CD34 (anti-CD34Ab). To this end, heparin, VEGF, and anti-CD34Ab attachment and quantification assays confirmed the efficacy of the modification strategy. Cell attachment and proliferation on these groups were compared to unmodified grafts in vitro and in vivo. To assess in vivo graft functionality, the grafts were implanted as inferior vena cava interpositional conduits in mice. Modified vascular grafts displayed increased endothelial cell attachment and activity in vivo, according to microscopy techniques, histological results, and eNOS expression. Inner lumen diameter of the modified grafts was also better maintained than controls. Overall, while both functionalized grafts outperformed the unmodified control, grafts modified with anti-CD34Ab appeared to yield the most improved results compared to VEGF-loaded grafts.
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Affiliation(s)
- A. J. Melchiorri
- Fischell
Department of Bioengineering, University
of Maryland, College Park, Maryland 20742, United States
| | - N. Hibino
- Tissue Engineering Program
and Surgical Research and Department of Cardiothoracic Surgery, Nationwide Children’s Hospital, Columbus, Ohio 43205, United States
| | - T. Yi
- Tissue Engineering Program
and Surgical Research and Department of Cardiothoracic Surgery, Nationwide Children’s Hospital, Columbus, Ohio 43205, United States
| | - Y. U. Lee
- Tissue Engineering Program
and Surgical Research and Department of Cardiothoracic Surgery, Nationwide Children’s Hospital, Columbus, Ohio 43205, United States
| | - T. Sugiura
- Tissue Engineering Program
and Surgical Research and Department of Cardiothoracic Surgery, Nationwide Children’s Hospital, Columbus, Ohio 43205, United States
| | - S. Tara
- Tissue Engineering Program
and Surgical Research and Department of Cardiothoracic Surgery, Nationwide Children’s Hospital, Columbus, Ohio 43205, United States
| | - T. Shinoka
- Tissue Engineering Program
and Surgical Research and Department of Cardiothoracic Surgery, Nationwide Children’s Hospital, Columbus, Ohio 43205, United States
| | - C. Breuer
- Tissue Engineering Program
and Surgical Research and Department of Cardiothoracic Surgery, Nationwide Children’s Hospital, Columbus, Ohio 43205, United States
| | - J. P. Fisher
- Fischell
Department of Bioengineering, University
of Maryland, College Park, Maryland 20742, United States
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33
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Jo YK, Seo JH, Choi BH, Kim BJ, Shin HH, Hwang BH, Cha HJ. Surface-independent antibacterial coating using silver nanoparticle-generating engineered mussel glue. ACS Appl Mater Interfaces 2014; 6:20242-53. [PMID: 25311392 DOI: 10.1021/am505784k] [Citation(s) in RCA: 53] [Impact Index Per Article: 5.3] [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: 05/27/2023]
Abstract
During implant surgeries, antibacterial agents are needed to prevent bacterial infections, which can cause the formation of biofilms between implanted materials and tissue. Mussel adhesive proteins (MAPs) derived from marine mussels are bioadhesives that show strong adhesion and coating ability on various surfaces even in wet environment. Here, we proposed a novel surface-independent antibacterial coating strategy based on the fusion of MAP to a silver-binding peptide, which can synthesize silver nanoparticles having broad antibacterial activity. This sticky recombinant fusion protein enabled the efficient coating on target surface and the easy generation of silver nanoparticles on the coated-surface under mild condition. The biosynthesized silver nanoparticles showed excellent antibacterial efficacy against both Gram-positive and Gram-negative bacteria and also revealed good cytocompatibility with mammalian cells. In this coating strategy, MAP-silver binding peptide fusion proteins provide hybrid environment incorporating inorganic silver nanoparticle and simultaneously mediate the interaction of silver nanoparticle with surroundings. Moreover, the silver nanoparticles were fully synthesized on various surfaces including metal, plastic, and glass by a simple, surface-independent coating manner, and they were also successfully synthesized on a nanofiber surface fabricated by electrospinning of the fusion protein. Thus, this facile surface-independent silver nanoparticle-generating antibacterial coating has great potential to be used for the prevention of bacterial infection in diverse biomedical fields.
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Affiliation(s)
- Yun Kee Jo
- Department of Chemical Engineering, Pohang University of Science and Technology , Pohang 790-784, Korea
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34
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Bazaka K, Ketheesan N, Jacob MV. Polymer encapsulation of magnesium to control biodegradability and biocompatibility. J Nanosci Nanotechnol 2014; 14:8087-8093. [PMID: 25942929 DOI: 10.1166/jnn.2014.9409] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
Clinical utility of biodegradable magnesium implants is undermined by the untimely degradation of these materials in vivo. Their high corrosion rate leads to loss of mechanical integrity, peri-implant alkalization and localised accumulation of hydrogen gas. Biodegradable coatings were produced on pure magnesium using RF plasma polymerisation. A monoterpene alcohol with known anti-inflammatory and antibacterial properties was used as a polymer precursor. The addition of the polymeric layer was found to reduce the degradation rate of magnesium in simulated body fluid. The in vitro studies indicated good cytocompatibility of non-adherent THP-1 cells and mouse macrophage cells with the polymer, and the polymer coated sample. The viability of THP-1 cells was significantly improved when in contact with polymer encapsulated magnesium compared to unmodified samples. Collectively, these results suggest plasma enhanced polymer encapsulation of magnesium as a suitable method to control degradation kinetics of this biomaterial.
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35
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Abstract
Glioblastoma multiforme (GBM), the most prevalent primary brain cancer, is characterized by diffuse infiltration of tumor cells into brain tissue, which severely complicates surgical resection and contributes to tumor recurrence. The most rapid mode of tissue infiltration occurs along blood vessels or white matter tracts, which represent topological interfaces thought to serve as "tracks" that speed cell migration. Despite this observation, the field lacks experimental paradigms that capture key features of these tissue interfaces and allow reductionist dissection of mechanisms of this interfacial motility. To address this need, we developed a culture system in which tumor cells are sandwiched between a fibronectin-coated ventral surface representing vascular basement membrane and a dorsal hyaluronic acid (HA) surface representing brain parenchyma. We find that inclusion of the dorsal HA surface induces formation of adhesive complexes and significantly slows cell migration relative to a free fibronectin-coated surface. This retardation is amplified by inclusion of integrin binding peptides in the dorsal layer and expression of CD44, suggesting that the dorsal surface slows migration through biochemically specific mechanisms rather than simple steric hindrance. Moreover, both the reduction in migration speed and assembly of dorsal adhesions depend on myosin activation and the stiffness of the ventral layer, implying that mechanochemical feedback directed by the ventral layer can influence adhesive signaling at the dorsal surface.
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Affiliation(s)
- Andrew D Rape
- Department of Bioengineering, University of California, Berkeley, United States
| | - Sanjay Kumar
- Department of Bioengineering, University of California, Berkeley, United States.
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36
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Mutsuzaki H, Ito A, Sogo Y, Sakane M, Oyane A, Yamazaki M. The calcium phosphate matrix of FGF-2-apatite composite layers contributes to their biological effects. Int J Mol Sci 2014; 15:10252-70. [PMID: 24918287 PMCID: PMC4100151 DOI: 10.3390/ijms150610252] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2014] [Accepted: 05/28/2014] [Indexed: 12/14/2022] Open
Abstract
The purpose of the present study was to fabricate fibroblast growth factor (FGF)-2-apatite composite layers on titanium (Ti) pins in one step at 25 °C using a supersaturated calcium phosphate (CaP) solution, and to evaluate the physicochemical characteristics and biological effects of the coated Ti pins compared with coated Ti pins fabricated at 37 °C. Ti pins were immersed in a supersaturated CaP solution containing 0.5, 1.0, or 2.0 µg/mL FGF-2 at 25 °C for 24 h (25F0.5, 25F1.0, and 25F2.0) or containing 4.0 µg/mL FGF-2 at 37 °C for 48 h (37F4.0). Except for the 25F0.5, the chemical compositions and the mitogenic activity levels of FGF-2 of the composite layers formed by these two methods were similar, except for the Ca/P molar ratio, which was markedly smaller at 25 °C (1.55-1.56±0.01-0.02, p=0.0008-0.0045) than at 37 °C (1.67±0.11). Thus, either the apatite was less mature or the amount of amorphous calcium phosphate was higher in the composite layer formed at 25 °C. In vivo, the pin tract infection rate by visual inspection for 37F4.0 (45%) was lower than that for 25F1.0 (80%, p=0.0213), and the rate of osteomyelitis for 37F4.0 (35%) was lower than that for 25F0.5 (75%, p=0.0341). The extraction torque for 37F4.0 (0.276±0.117 Nm) was higher than that for 25F0.5 (0.192±0.117 Nm, p=0.0142) and that for 25F1.0 (0.176±0.133 Nm, p=0.0079). The invasion rate of S. aureus for 37F4.0 (35%) was lower than that for 25F0.5 (75%, p=0.0110). On the whole, the FGF-2-apatite composite layer formed at 25 °C tended to be less effective at improving fixation strength in the bone-pin interface and resisting pin tract infections. These results suggest that the chemistry of the calcium phosphate matrix that embeds FGF-2, in addition to FGF-2 content and activity, has a significant impact on composite infection resistance and fixation strength.
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Affiliation(s)
- Hirotaka Mutsuzaki
- Department of Orthopaedic Surgery, Ibaraki Prefectural University of Health Sciences, 4669-2 Ami Ami-machi, Inashiki-gun, Ibaraki 300-0394, Japan.
| | - Atsuo Ito
- Human Technology Research Institute, National Institute of Advanced Industrial Science and Technology (AIST), Central 6, 1-1-1 Higashi, Tsukuba, Ibaraki 305-8566, Japan.
| | - Yu Sogo
- Human Technology Research Institute, National Institute of Advanced Industrial Science and Technology (AIST), Central 6, 1-1-1 Higashi, Tsukuba, Ibaraki 305-8566, Japan.
| | - Masataka Sakane
- Department of Orthopaedic Surgery, University of Tsukuba, 1-1-1 Tennodai, Tsukuba, Ibaraki 305-8575, Japan.
| | - Ayako Oyane
- Nanosystem Research Institute, National Institute of Advanced Industrial Science and Technology (AIST), Central 4, 1-1-1 Higashi, Tsukuba, Ibaraki 305-8562, Japan.
| | - Masashi Yamazaki
- Department of Orthopaedic Surgery, University of Tsukuba, 1-1-1 Tennodai, Tsukuba, Ibaraki 305-8575, Japan.
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37
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Steinhagen M, Hoffmeister PG, Nordsieck K, Hötzel R, Baumann L, Hacker MC, Schulz-Siegmund M, Beck-Sickinger AG. Matrix metalloproteinase 9 (MMP-9) mediated release of MMP-9 resistant stromal cell-derived factor 1α (SDF-1α) from surface modified polymer films. ACS Appl Mater Interfaces 2014; 6:5891-5899. [PMID: 24646074 DOI: 10.1021/am500794q] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
Preparation of smart materials by coatings of established surfaces with biomolecules will lead to the next generation of functionalized biomaterials. Rejection of implants is still a major problem in medical applications but masking the implant material with protein coatings is a promising approach. These layers not only disguise the material but also equip it with a certain biological function. The anti-inflammatory chemokine stromal cell-derived factor 1α (SDF-1α) is well suited to take over this function, because it efficiently attracts stem cells and promotes their differentiation and proliferation. At least the initial stem cell homing requires the formation of a concentration gradient. Thus, a reliable and robust release mechanism of SDF-1α from the material is essential. Several proteases, most notably matrix metalloproteinases, are upregulated during inflammation, which, in principle, can be exploited for a tightly controlled release of SDF-1α. Herein, we present the covalent immobilization of M-[S4V]-SDF-1α on novel biodegradable polymer films, which consist of heterobifunctional poly(ethylene glycol) and oligolactide-based functionalized macromers. A peptidic linker with a trimeric matrix metalloproteinase 9 (MMP-9) cleavage site (MCS) was used as connection and the linkage between the three components was achieved by combination of expressed protein ligation and Cu(I) catalyzed azide/alkyne cycloaddition. The MCS was used for MMP-9 mediated release of M-[S4V]-SDF-1α from the biomaterial and the released SDF-1α derivative was biologically active and induced strong cell migration, which demonstrates the great potential of this system.
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Affiliation(s)
- Max Steinhagen
- Institute of Biochemistry, Faculty of Biosciences, Pharmacy and Psychology, Universität Leipzig , Brüderstraße 34, 04103 Leipzig, Germany
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38
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Qu Z, Krishnamurthy V, Haller CA, Dorr BM, Marzec UM, Hurst S, Hinds MT, Hanson SR, Liu DR, Chaikof EL. Immobilization of actively thromboresistant assemblies on sterile blood-contacting surfaces. Adv Healthc Mater 2014; 3:30-5. [PMID: 23788402 DOI: 10.1002/adhm.201300110] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.7] [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: 03/23/2013] [Indexed: 12/13/2022]
Abstract
Rapid one-step modification of thrombomodulin with alkylamine derivatives such as azide, biotin, and PEG is achieved using an evolved sortase (eSrtA) mutant. The feasibility of a point-of-care scheme is demonstrated herein to site-specifically immobilize azido-thrombomodulin on sterilized commercial ePTFE vascular grafts, which exhibit superior thromboresistance compared with commercial heparin-coated grafts in a primate model of acute graft thrombosis.
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Affiliation(s)
- Zheng Qu
- Department of Surgery, Beth Israel Deaconess Medical Center, Harvard Medical School and the Wyss Institute of Biologically Inspired, Engineering of Harvard University, Boston, MA 02115, USA; Coulter Department of Biomedical Engineering, Petit Institute for Bioengineering and Bioscience, Georgia Institute of Technology, Atlanta, GA 30332, USA
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39
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Venugopalan PL, Sai R, Chandorkar Y, Basu B, Shivashankar S, Ghosh A. Conformal cytocompatible ferrite coatings facilitate the realization of a nanovoyager in human blood. Nano Lett 2014; 14:1968-75. [PMID: 24641110 DOI: 10.1021/nl404815q] [Citation(s) in RCA: 60] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
Abstract
Controlled motion of artificial nanomotors in biological environments, such as blood, can lead to fascinating biomedical applications, ranging from targeted drug delivery to microsurgery and many more. In spite of the various strategies used in fabricating and actuating nanomotors, practical issues related to fuel requirement, corrosion, and liquid viscosity have limited the motion of nanomotors to model systems such as water, serum, or biofluids diluted with toxic chemical fuels, such as hydrogen peroxide. As we demonstrate here, integrating conformal ferrite coatings with magnetic nanohelices offer a promising combination of functionalities for having controlled motion in practical biological fluids, such as chemical stability, cytocompatibility, and the generated thrust. These coatings were found to be stable in various biofluids, including human blood, even after overnight incubation, and did not have significant influence on the propulsion efficiency of the magnetically driven nanohelices, thereby facilitating the first successful "voyage" of artificial nanomotors in human blood. The motion of the "nanovoyager" was found to show interesting stick-slip dynamics, an effect originating in the colloidal jamming of blood cells in the plasma. The system of magnetic "nanovoyagers" was found to be cytocompatible with C2C12 mouse myoblast cells, as confirmed using MTT assay and fluorescence microscopy observations of cell morphology. Taken together, the results presented in this work establish the suitability of the "nanovoyager" with conformal ferrite coatings toward biomedical applications.
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Affiliation(s)
- Pooyath Lekshmy Venugopalan
- Centre for Nano Science and Engineering, ‡Materials Research Centre, §Department of Electrical Communication Engineering, ⊥Department of Physics, Indian Institute of Science , Bangalore 560012, India
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40
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Zhao H, Li Q, Wang Q, Wang Z. [Research progress in surface modification of orthopaedic implants via extracellular matrix components]. Zhongguo Xiu Fu Chong Jian Wai Ke Za Zhi 2013; 27:1390-1394. [PMID: 24501903] [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: 06/03/2023]
Abstract
OBJECTIVE To review the research progress of promoting the bone formation at early stage by components of the extracellular matrix (ECM). METHODS Recent literature concerning the influence of these components on new bone formation and bone/implant contact was extensively reviewed and summarized. RESULTS Coating of titanium or hydroxyapatite implants with organic components of the ECM (such as collagen type I, chondroitin sulfate, and Arg-Gly-Asp peptide) offers great potential to improve new bone formation and enhance bone/implant contact, which in turn will shorten recovery time and improve implant stability. CONCLUSION The increasing knowledge about the role of the ECM for recruitment, proliferation, differentiation of cells, and regeneration of tissue will eventually deal to the creating of an artificial EGM on the implant that could allow a defined adjustment of the required properties to support the healing process.
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Affiliation(s)
- Hongkun Zhao
- Medical Experimental and Research Center, Hebei United University, Tangshan Hebei, 063000, P.R.China
| | - Qijia Li
- Medical Experimental and Research Center, Hebei United University, Tangshan Hebei, 063000, P.R.China
| | - Qian Wang
- Medical Experimental and Research Center, Hebei United University, Tangshan Hebei, 063000, P.R.China
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41
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Wong CS, Liu X, Xu Z, Lin T, Wang X. Elastin and collagen enhances electrospun aligned polyurethane as scaffolds for vascular graft. J Mater Sci Mater Med 2013; 24:1865-1874. [PMID: 23625321 DOI: 10.1007/s10856-013-4937-y] [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] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/21/2012] [Accepted: 04/19/2013] [Indexed: 06/02/2023]
Abstract
Mismatch in mechanical properties between synthetic vascular graft and arteries contribute to graft failure. The viscoelastic properties of arteries are conferred by elastin and collagen. In this study, the mechanical properties and cellular interactions of aligned nanofibrous polyurethane (PU) scaffolds blended with elastin, collagen or a mixture of both proteins were examined. Elastin softened PU to a peak stress and strain of 7.86 MPa and 112.28 % respectively, which are similar to those observed in blood vessels. Collagen-blended PU increased in peak stress to 28.14 MPa. The growth of smooth muscle cells (SMCs) on both collagen-blended and elastin/collagen-blended scaffold increased by 283 and 224 % respectively when compared to PU. Smooth muscle myosin staining indicated that the cells are contractile SMCs which are favored in vascular tissue engineering. Elastin and collagen are beneficial for creating compliant synthetic vascular grafts as elastin provided the necessary viscoelastic properties while collagen enhanced the cellular interactions.
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MESH Headings
- Blood Vessel Prosthesis
- Cell Proliferation/drug effects
- Cells, Cultured
- Coated Materials, Biocompatible/chemistry
- Coated Materials, Biocompatible/metabolism
- Collagen/metabolism
- Collagen/pharmacology
- Coronary Vessels/cytology
- Elastin/metabolism
- Elastin/pharmacology
- Electroplating/methods
- Humans
- Materials Testing
- Muscle, Smooth, Vascular/cytology
- Muscle, Smooth, Vascular/physiology
- Myocytes, Smooth Muscle/cytology
- Myocytes, Smooth Muscle/drug effects
- Myocytes, Smooth Muscle/physiology
- Polyurethanes/chemistry
- Tissue Scaffolds/chemistry
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Affiliation(s)
- Cynthia S Wong
- Institute for Frontier Materials, Deakin University, Geelong, VIC, 3217, Australia.
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Wong HM, Wu S, Chu PK, Cheng SH, Luk KDK, Cheung KMC, Yeung KWK. Low-modulus Mg/PCL hybrid bone substitute for osteoporotic fracture fixation. Biomaterials 2013; 34:7016-32. [PMID: 23787111 DOI: 10.1016/j.biomaterials.2013.05.062] [Citation(s) in RCA: 70] [Impact Index Per Article: 6.4] [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: 03/31/2013] [Accepted: 05/24/2013] [Indexed: 01/25/2023]
Abstract
In this paper, we describe a new biodegradable composite composed of polycaprolactone and magnesium. Incorporation of magnesium micro-particles into the polycaprolactone matrix yields mechanical properties close to those of human cancellous bone, and in vitro studies indicate that the silane-coated Mg/PCL composites have excellent cytocompatibility and osteoblastic differentiation properties. The bioactivity of the composites is manifested by the formation of calcium and phosphate after immersion in simulated body fluids. The bulk mechanical properties can be maintained for 2 months before obvious degradation takes place. The in vivo animal study reveals a larger amount of new bone formation on the silane-coated Mg/PCL composites compared to conventional PMMA and pure polycaprolactone and our results suggest potential clinical applications of the sliane-coated Mg/PCL composites.
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Affiliation(s)
- Hoi Man Wong
- Department of Orthopaedics and Traumatology, The University of Hong Kong, Pokfulam, Hong Kong, China
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43
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Shen Y, Ma Y, Gao M, Lai Y, Wang G, Yu Q, Cui FZ, Liu X. Integrins-FAK-Rho GTPases pathway in endothelial cells sense and response to surface wettability of plasma nanocoatings. ACS Appl Mater Interfaces 2013; 5:5112-5121. [PMID: 23676504 DOI: 10.1021/am400973a] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
Vascular endothelial cell (EC) adhesion and migration are essential processes in re-endothelialization of implanted biomaterials, which are affected by surface properties of implanted materials such as surface wettability. Our previous study demonstrated that, as model substrates, EC adhesion/migration showed an opposite behavior on the hydrophobic and hydrophilic surfaces of plasma SiOx:H nanocoatings. Extending our previous works, the expression and distribution of crucial proteins in integrins-FAK-Rho GTPases signaling pathways were examined, respectively. The results showed that a hydrophilic surface could enhance the expression of focal adhesion protein associated with cell adhesion; however, the hydrophobic surface could improve the expression of Rho GTPases associated with cell migration and phosphorylation level of FAK, revealing the potential reason of surface wettability mediating different cells' adhesion/migration behaviors. These findings reveal the relationship and molecular mechanism of endothelial cell adhesion/migration, which was expected to guide the surface modification of implants for accelerating endothelialization.
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Affiliation(s)
- Yang Shen
- Institute of Biomedical Engineering, School of Preclinical and Forensic Medicine, Sichuan University, Chengdu 610041, China
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44
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Mahmoudi M, Shokrgozar MA, Behzadi S. Slight temperature changes affect protein affinity and cellular uptake/toxicity of nanoparticles. Nanoscale 2013; 5:3240-3244. [PMID: 23508197 DOI: 10.1039/c3nr32551b] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
It is known that what the cell actually "sees" at the nanoscale is an outer shell formed of 'protein corona' on the surface of nanoparticles (NPs). The amount and composition of various proteins on the corona are strongly dependent on the biophysicochemical properties of NPs, which have been extensively studied. However, the effect of a small variation in temperature, due to the human circadian rhythm, on the composition of the protein corona and the affinity of various proteins to the surface of NPs, was ignored. Here, the effect of temperature on the composition of protein corona and the affinity of various proteins to the surface of NPs and, subsequently, cell responses to the protein coated NPs are probed. The results confirmed that cellular entrance, dispersion, and toxicity of NPs are strongly diverse with slight body temperature changes. This new finding can help scientists to maximise NP entrance to specific cells/organs with lower toxicity by adjusting the cellular/organ temperature.
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Affiliation(s)
- Morteza Mahmoudi
- Department of Nanotechnology, Faculty of Pharmacy, Tehran University of Medical Sciences, Tehran, Iran.
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Tran N, Hall D, Webster TJ. Mechanisms of enhanced osteoblast gene expression in the presence of hydroxyapatite coated iron oxide magnetic nanoparticles. Nanotechnology 2012; 23:455104. [PMID: 23064042 DOI: 10.1088/0957-4484/23/45/455104] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
Hydroxyapatite (HA) coated iron oxide (Fe(3)O(4)) magnetic nanoparticles have been shown to enhance osteoblast (bone forming cells) proliferation and osteoblast differentiation into calcium depositing cells (through increased secretion of alkaline phosphatase, collagen and calcium deposition) compared to control samples without nanoparticles. Such nanoparticles are, thus, very promising for numerous orthopedic applications including magnetically directed osteoporosis treatment. The objective of the current study was to elucidate the mechanisms of the aforementioned improved osteoblast responses in the presence of HA coated Fe(3)O(4) nanoparticles. Results demonstrated large amounts of fibronectin (a protein known to increase osteoblast functions) adsorption on HA coated Fe(3)O(4) nanoparticles. Specifically, fibronectin adsorption almost doubled when HA coated Fe(3)O(4) nanoparticle concentrations increased from 12.5 to 100 μg ml(-1), and from 12.5 to 200 μg ml(-1), a four fold increase was observed. Results also showed greater osteoblast gene regulation (specifically, osteocalcin, type I collagen and cbfa-1) in the presence of HA coated Fe(3)O(4) nanoparticles. Collectively, these results provide a mechanism for the observed enhanced osteoblast functions in the presence of HA coated iron oxide nanoparticles, allowing their further investigation for a number of orthopedic applications.
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Affiliation(s)
- Nhiem Tran
- Department of Physics, Brown University, Providence, RI 02912, USA
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Gustafsson Y, Haag J, Jungebluth P, Lundin V, Lim ML, Baiguera S, Ajalloueian F, Del Gaudio C, Bianco A, Moll G, Sjöqvist S, Lemon G, Teixeira AI, Macchiarini P. Viability and proliferation of rat MSCs on adhesion protein-modified PET and PU scaffolds. Biomaterials 2012; 33:8094-103. [PMID: 22901964 DOI: 10.1016/j.biomaterials.2012.07.060] [Citation(s) in RCA: 40] [Impact Index Per Article: 3.3] [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: 06/14/2012] [Accepted: 07/28/2012] [Indexed: 12/14/2022]
Abstract
In 2011, the first in-man successful transplantation of a tissue engineered trachea-bronchial graft, using a synthetic POSS-PCU nanocomposite construct seeded with autologous stem cells, was performed. To further improve this technology, we investigated the feasibility of using polymers with a three dimensional structure more closely mimicking the morphology and size scale of native extracellular matrix (ECM) fibers. We therefore investigated the in vitro biocompatibility of electrospun polyethylene terephthalate (PET) and polyurethane (PU) scaffolds, and determined the effects on cell attachment by conditioning the fibers with adhesion proteins. Rat mesenchymal stromal cells (MSCs) were seeded on either PET or PU fiber-layered culture plates coated with laminin, collagen I, fibronectin, poly-D-lysine or gelatin. Cell density, proliferation, viability, morphology and mRNA expression were evaluated. MSC cultures on PET and PU resulted in similar cell densities and amounts of proliferating cells, with retained MSC phenotype compared to data obtained from tissue culture plate cultures. Coating the scaffolds with adhesion proteins did not increase cell density or cell proliferation. Our data suggest that both PET and PU mats, matching the dimensions of ECM fibers, are biomimetic scaffolds and, because of their high surface area-to-volume provided by the electrospinning procedure, makes them per se suitable for cell attachment and proliferation without any additional coating.
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Affiliation(s)
- Ylva Gustafsson
- Advanced Center for Translational Regenerative Medicine (ACTREM), Karolinska Institutet, Stockholm, Sweden
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Chrzanowski W, Kondyurin A, Lee JH, Lord MS, Bilek MMM, Kim HW. Biointerface: protein enhanced stem cells binding to implant surface. J Mater Sci Mater Med 2012; 23:2203-15. [PMID: 22714559 DOI: 10.1007/s10856-012-4687-2] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/20/2011] [Accepted: 05/21/2012] [Indexed: 05/23/2023]
Abstract
The number of metallic implantable devices placed every year is estimated at 3.7 million. This number has been steadily increasing over last decades at a rate of around 8 %. In spite of the many successes of the devices the implantation of biomaterial into tissues almost universally leads to the development of an avascular sac, which consists of fibrous tissue around the device and walls off the implant from the body. This reaction can be detrimental to the function of implant, reduces its lifetime, and necessitates repeated surgery. Clearly, to reduce the number of revision surgeries and improve long-term implant function it is necessary to enhance device integration by modulating cell adhesion and function. In this paper we have demonstrated that it is possible to enhance stem cell attachment using engineered biointerfaces. To create this functional interface, samples were coated with polymer (as a precursor) and then ion implanted to create a reactive interface that aids the binding of biomolecules--fibronectin. Both AFM and XPS analyses confirmed the presence of protein layers on the samples. The amount of protein was significant greater for the ion implanted surfaces and was not disrupted upon washing with detergent, hence the formation of strong bonds with the interface was confirmed. While, for non ion implanted surfaces, a decrease of protein was observed after washing with detergent. Finally, the number of stem cells attached to the surface was enhanced for ion implanted surfaces. The studies presented confirm that the developed bionterface with immobilised fibronectin is an effective means to modulate stem cell attachment.
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Affiliation(s)
- W Chrzanowski
- The Faculty of Pharmacy, The University of Sydney, Pharmacy and Bank Building A15, Sydney, NSW, 2006, Australia.
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Guo CX, Ng SR, Khoo SY, Zheng X, Chen P, Li CM. RGD-peptide functionalized graphene biomimetic live-cell sensor for real-time detection of nitric oxide molecules. ACS Nano 2012; 6:6944-6951. [PMID: 22793649 DOI: 10.1021/nn301974u] [Citation(s) in RCA: 106] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Abstract
It is always challenging to construct a smart functional nanostructure with specific physicochemical properties to real time detect biointeresting molecules released from live-cells. We report here a new approach to build a free-standing biomimetic sensor by covalently bonding RGD-peptide on the surface of pyrenebutyric acid functionalized graphene film. The resulted graphene biofilm sensor comprises a well-packed layered nanostructure, in which the RGD-peptide component provides desired biomimetic properties for superior human cell attachment and growth on the film surface to allow real-time detection of nitric oxide, an important signal yet short-life molecule released from the attached human endothelial cells under drug stimulations. The film sensor exhibits good flexibility and stability by retaining its original response after 45 bending/relaxing cycles and high reproducibility from its almost unchanged current responses after 15 repeated measurements, while possessing high sensitivity, good selectivity against interferences often existing in biological systems, and demonstrating real time quantitative detection capability toward nitric oxide molecule released from living cells. This study not only demonstrates a facial approach to fabricate a smart nanostructured graphene-based functional biofilm, but also provides a powerful and reliable platform to the real-time study of biointeresting molecules released from living cells, thus rendering potential broad applications in neuroscience, screening drug therapy effect, and live-cell assays.
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Affiliation(s)
- Chun Xian Guo
- Institute for Clean Energy & Advanced Materials, Southwest University, Chongqing 400715, PR China
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Carney RP, Carney TM, Mueller M, Stellacci F. Dynamic cellular uptake of mixed-monolayer protected nanoparticles. Biointerphases 2012; 7:17. [PMID: 22589060 DOI: 10.1007/s13758-011-0017-3] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.8] [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: 10/17/2011] [Accepted: 12/22/2011] [Indexed: 11/25/2022] Open
Abstract
Nanoparticles (NPs) are gaining increasing attention for potential application in medicine; consequently, studying their interaction with cells is of central importance. We found that both ligand arrangement and composition on gold nanoparticles play a crucial role in their cellular internalization. In our previous investigation, we showed that 66-34OT nanoparticles coated with stripe-like domains of hydrophobic (octanethiol, OT, 34%) and hydrophilic (11-mercaptoundecane sulfonate, MUS, 66%) ligands permeated through the cellular lipid bilayer via passive diffusion, in addition to endo-/pino-cytosis. Here, we show an analysis of NP internalization by DC2.4, 3T3, and HeLa cells at two temperatures and multiple time points. We study four NPs that differ in their surface structures and ligand compositions and report on their cellular internalization by intracellular fluorescence quantification. Using confocal laser scanning microscopy we have found that all three cell types internalize the 66-34OT NPs more than particles coated only with MUS, or particles coated with a very similar coating but lacking any detectable ligand shell structure, or 'striped' particles but with a different composition (34-66OT) at multiple data points.
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Affiliation(s)
- Randy P Carney
- Department of Materials Science and Engineering, École Polytechnique Fédérale de Lausanne (EPFL), 1015, Lausanne, Switzerland
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Shadanbaz S, Dias GJ. Calcium phosphate coatings on magnesium alloys for biomedical applications: a review. Acta Biomater 2012; 8:20-30. [PMID: 22040686 DOI: 10.1016/j.actbio.2011.10.016] [Citation(s) in RCA: 485] [Impact Index Per Article: 40.4] [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: 07/20/2011] [Revised: 10/13/2011] [Accepted: 10/13/2011] [Indexed: 12/13/2022]
Abstract
Magnesium has been suggested as a revolutionary biodegradable metal for use as an orthopaedic material. As a biocompatible and degradable metal, it has several advantages over the permanent metallic materials currently in use, including eliminating the effects of stress shielding, improving biocompatibility concerns in vivo and improving degradation properties, removing the requirement of a second surgery for implant removal. The rapid degradation of magnesium, however, is a double-edged sword as it is necessary to control the corrosion rates of the materials to match the rates of bone healing. In response, calcium phosphate coatings have been suggested as a means to control these corrosion rates. The potential calcium phosphate phases and their coating techniques on substrates are numerous and can provide several different properties for different applications. The reactivity and low melting point of magnesium, however, require specific parameters for calcium phosphate coatings to be successful. Within this review, an overview of the different calcium phosphate phases, their properties and their behaviour in vitro and in vivo has been provided, followed by the current coating techniques used for calcium phosphates that may be or may have been adapted for magnesium substrates.
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Affiliation(s)
- Shaylin Shadanbaz
- Department of Anatomy and Structural Biology, University of Otago, Dunedin, New Zealand.
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