1
|
Bhatt M, Shende P. Surface patterning techniques for proteins on nano- and micro-systems: a modulated aspect in hierarchical structures. J Mater Chem B 2022; 10:1176-1195. [PMID: 35119060 DOI: 10.1039/d1tb02455h] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
The surface patterning of protein using fabrication or the external functionalization of structures demonstrates various applications in the biomedical field for bioengineering, biosensing and antifouling. This review article offers an outline of the existing advances in protein patterning technology with a special emphasis on the current physical and physicochemical methods, including stencil patterning, trap- and droplet-based microfluidics, and chemical modification of surfaces via photolithography, microcontact printing and scanning probe nanolithography. Different approaches are applied for the biological studies of recent trends for single-protein patterning technology, such as robotic printing, stencil printing and colloidal lithography, wherein the concepts of physical confinement, electrostatic and capillary forces, as well as dielectrophoretics, are summarised to understand the design approaches. Photochemical alterations with diazirine, nitrobenzyl and aryl azide functional groups for the implication of modified substrates, such as self-assembled monolayers functionalized with amino silanes, organosilanes and alkanethiols on gold surfaces, as well as topographical effects of patterning techniques for protein functionalization and orientation, are discussed. Analytical methods for the evaluation of protein functionality are also mentioned. Regarding their selectivity, protein pattering methods will be readily used to fabricate modified surfaces and target-specific delivery systems for the transportation of macromolecules such as streptavidin, and albumin. Future applications of patterning techniques include high-throughput screening, the evaluation of intracellular interactions, accurate screening and personalized treatments.
Collapse
Affiliation(s)
- Maitri Bhatt
- Shobhaben Pratapbhai Patel School of Pharmacy and Technology Management, SVKM'S NMIMS, V. L. Mehta Road, Vile Parle (W), Mumbai, India.
| | - Pravin Shende
- Shobhaben Pratapbhai Patel School of Pharmacy and Technology Management, SVKM'S NMIMS, V. L. Mehta Road, Vile Parle (W), Mumbai, India.
| |
Collapse
|
2
|
Sharma A, Foppen JW, Banerjee A, Sawssen S, Bachhar N, Peddis D, Bandyopadhyay S. Magnetic Nanoparticles to Unique DNA Tracers: Effect of Functionalization on Physico-chemical Properties. NANOSCALE RESEARCH LETTERS 2021; 16:24. [PMID: 33547989 PMCID: PMC7867676 DOI: 10.1186/s11671-021-03483-5] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 09/26/2020] [Accepted: 01/18/2021] [Indexed: 06/12/2023]
Abstract
To monitor and manage hydrological systems such as brooks, streams, rivers, the use of tracers is a well-established process. Limited number of potential tracers such as salts, isotopes and dyes, make study of hydrological processes a challenge. Traditional tracers find limited use due to lack of multiplexed, multipoint tracing and background noise, among others. In this regard, DNA based tracers possess remarkable advantages including, environmentally friendly, stability, and high sensitivity in addition to showing great potential in the synthesis of ideally unlimited number of unique tracers capable of multipoint tracing. To prevent unintentional losses in the environment during application and easy recovery for analysis, we hereby report DNA encapsulation in silica containing magnetic cores (iron oxide) of two different shapes-spheres and cubes. The iron oxide nanoparticles having size range 10-20 nm, have been synthesized using co-precipitation of iron salts or thermal decomposition of iron oleate precursor in the presence of oleic acid or sodium oleate. Physico-chemical properties such as size, zeta potential, magnetism etc. of the iron oxide nanoparticles have been optimized using different ligands for effective binding of dsDNA, followed by silanization. We report for the first time the effect of surface coating on the magnetic properties of the iron oxide nanoparticles at each stage of functionalization, culminating in silica shells. Efficiency of encapsulation of three different dsDNA molecules has been studied using quantitative polymerase chain reaction (qPCR). Our results show that our DNA based magnetic tracers are excellent candidates for hydrological monitoring with easy recoverability and high signal amplification.
Collapse
Affiliation(s)
- Anuvansh Sharma
- Department of Materials Science and Engineering, Norwegian University of Science and Technology (NTNU), 7491, Trondheim, Norway
| | - Jan Willem Foppen
- Department of Water Science and Engineering, IHE Delft Institute for Water Education, PO Box 3015, Delft, The Netherlands
| | - Abhishek Banerjee
- Department of Materials Science and Engineering, Norwegian University of Science and Technology (NTNU), 7491, Trondheim, Norway
| | - Slimani Sawssen
- Dipartimento di Chimica e Chimica Industriale, Università di Genova, Genoa, Italy
- Istituto di Struttura della Materia - CNR, Area della Ricerca di Roma1, 00015, Monterotondo Scalo, RM, Italy
| | - Nirmalya Bachhar
- Department of Chemical Engineering, Indian Institute of Technology Jodhpur, Jodhpur, 342037, India
| | - Davide Peddis
- Dipartimento di Chimica e Chimica Industriale, Università di Genova, Genoa, Italy
- Istituto di Struttura della Materia - CNR, Area della Ricerca di Roma1, 00015, Monterotondo Scalo, RM, Italy
| | - Sulalit Bandyopadhyay
- Department of Water Management, Delft University of Technology, PO Box 5048, 2600 GA, Delft, The Netherlands.
- Department of Chemical Engineering, Norwegian University of Science and Technology (NTNU), 7491, Trondheim, Norway.
| |
Collapse
|
3
|
Ranucci E, Manfredi A. Polyamidoamines: Versatile Bioactive Polymers with Potential for Biotechnological Applications. CHEMISTRY AFRICA-A JOURNAL OF THE TUNISIAN CHEMICAL SOCIETY 2019. [DOI: 10.1007/s42250-019-00046-1] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
|
4
|
Reshadmanesh A, Rahbarizadeh F, Ahmadvand D, Jafari Iri Sofla F. Evaluation of cellular and transcriptional targeting of breast cancer stem cells via anti-HER2 nanobody conjugated PAMAM dendrimers. ARTIFICIAL CELLS NANOMEDICINE AND BIOTECHNOLOGY 2018; 46:S105-S115. [PMID: 30246563 DOI: 10.1080/21691401.2018.1489269] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
According to the cancer stem cell (CSC) theory, a small subset of cells with stem cell-like characteristics is responsible for tumor initiation, progression, and recurrence. CD44+/CD24- phenotype is assumed to be one of the main characteristics of the breast CSCs. We developed an MDA-MB-231 cell line overexpressing cell surface HER2 antigen for the evaluation of targeting efficiency of anti-HER2 nanobody (Nb)-conjugated polyamidoamine (PAMAM) polyplexes. Apoptosis-inducing tBid gene under control of CXCR1 promoter was delivered by this nanoparticle. Cellular uptake study showed higher uptake of Nb-targeted PAMAM carriers compared to non-targeted nanoparticles after 6 h of incubation. Gene expression analysis showed a significant rise in the expression of tBid in both MDA-MB-231/HER2+ and MDA-MB-231 compared to the two other cell lines. The same effect was observed after transfection with Nb-conjugated polyplexes within MDA-MB-231/HER2+ cell line compared to non-conjugated PAMAM polyplexes. We confirmed the killing efficiency of the gene construct in both MDA-MB-231/HER2+ and MDA-MB-231 cell lines by caspase 3 activity assay. These findings suggest that imposing pre-entry and post-entry restrictions on tBid killer gene might be a promising approach to specifically target the breast CSCs.
Collapse
Affiliation(s)
- Azadeh Reshadmanesh
- a Department of Medical Biotechnology, Faculty of Medical Sciences , Tarbiat Modares University , Tehran , Iran
| | - Fatemeh Rahbarizadeh
- a Department of Medical Biotechnology, Faculty of Medical Sciences , Tarbiat Modares University , Tehran , Iran
| | - Davoud Ahmadvand
- b Department of Biochemistry, School of Allied Medical Sciences , Iran University of Medical Sciences , Tehran , Iran
| | - Farnoush Jafari Iri Sofla
- a Department of Medical Biotechnology, Faculty of Medical Sciences , Tarbiat Modares University , Tehran , Iran
| |
Collapse
|
5
|
Cavalli R, Primo L, Sessa R, Chiaverina G, di Blasio L, Alongi J, Manfredi A, Ranucci E, Ferruti P. The AGMA1 polyamidoamine mediates the efficient delivery of siRNA. J Drug Target 2017; 25:891-898. [PMID: 28817973 DOI: 10.1080/1061186x.2017.1363215] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Abstract
AGMA1, a prevailingly cationic, guanidine-bearing, linear, amphoteric polyamidoamine is an effective siRNA condensing agent. Here two AGMA1 samples of different molecular weight, i.e. AGMA1-5 and AGMA1-10 were evaluated as siRNA condensing agents and transfection promoters. AGMA1-10 formed stable polyplexes with a size lower than 50 nm and positive zeta potential. AGMA1-5 polyplexes were larger, about 100 nm in size. AGMA1-10 polyplexes, but not AGMA1-5 proved to be an effective intracellular siRNA carrier, able to trigger gene silencing in Hela and PC3 cell lines without eliciting cytotoxic effects. AGMA1-10 knocked down AKT-1 expression upon transfection with an AKT-1 specific siRNA. The polyplex entry mechanism was investigated and was mediated by macropinocytosis. In conclusion, AGMA1 has potential as an efficient, non-toxic tool for the intracellular delivery of siRNA and warrants further investigation.
Collapse
Affiliation(s)
- Roberta Cavalli
- a Drug Science and Technology Department , University of Torino , Torino , Italy
| | - Luca Primo
- b Candiolo Cancer Institute FPO-IRCCS , Candiolo , Italy.,c Department of Oncology , University of Torino , Torino , Italy
| | - Roberto Sessa
- d University of California, Cardiovascular Research Institute , Berkeley , USA
| | | | | | - Jenny Alongi
- e Department of Chemistry , Università degli Studi di Milano , Milano , Italy
| | - Amedea Manfredi
- e Department of Chemistry , Università degli Studi di Milano , Milano , Italy
| | - Elisabetta Ranucci
- e Department of Chemistry , Università degli Studi di Milano , Milano , Italy
| | - Paolo Ferruti
- e Department of Chemistry , Università degli Studi di Milano , Milano , Italy
| |
Collapse
|
6
|
Reyes-Reveles J, Sedaghat-Herati R, Gilley DR, Schaeffer AM, Ghosh KC, Greene TD, Gann HE, Dowler WA, Kramer S, Dean JM, Delong RK. mPEG-PAMAM-G4 nucleic acid nanocomplexes: enhanced stability, RNase protection, and activity of splice switching oligomer and poly I:C RNA. Biomacromolecules 2013; 14:4108-15. [PMID: 24164501 PMCID: PMC4295786 DOI: 10.1021/bm4012425] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
Dendrimer chemistries have virtually exploded in recent years with increasing interest in this class of polymers as gene delivery vehicles. An effective nucleic acid delivery vehicle must efficiently bind its cargo and form physically stable complexes. Most importantly, the nucleic acid must be protected in biological fluids and tissues, as RNA is extremely susceptible to nuclease degradation. Here, we characterized the association of nucleic acids with generation 4 PEGylated poly(amidoamine) dendrimer (mPEG-PAMAM-G4). We investigated the formation, size, and stability over time of the nanoplexes at various N/P ratios by gel shift and dynamic light scatter spectroscopy (DLS). Further characterization of the mPEG-PAMAM-G4/nucleic acid association was provided by atomic force microscopy (AFM) and by circular dichroism (CD). Importantly, mPEG-PAMAM-G4 complexation protected RNA from treatment with RNase A, degradation in serum, and various tissue homogenates. mPEG-PAMAM-G4 complexation also significantly enhanced the functional delivery of RNA in a novel engineered human melanoma cell line with splice-switching oligonucleotides (SSOs) targeting a recombinant luciferase transcript. mPEG-PAMAM-G4 triconjugates formed between gold nanoparticle (GNP) and particularly manganese oxide (MnO) nanorods, poly IC, an anticancer RNA, showed enhanced cancer-killing activity by an MTT (3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide) cell viability assay.
Collapse
Affiliation(s)
- Juan Reyes-Reveles
- Department of Biomedical Sciences, Missouri State University, Springfield, Missouri, 65897
| | - Reza Sedaghat-Herati
- Department of Chemistry, Missouri State University, Springfield, Missouri, 65897
| | - David R. Gilley
- Department of Biomedical Sciences, Missouri State University, Springfield, Missouri, 65897
| | - Ashley M. Schaeffer
- Department of Biomedical Sciences, Missouri State University, Springfield, Missouri, 65897
| | - Kartik C. Ghosh
- Department of Physics, Missouri State University, Springfield, Missouri, 65897
| | - Thomas D. Greene
- Department of Biomedical Sciences, Missouri State University, Springfield, Missouri, 65897
| | - Hannah E. Gann
- Department of Biomedical Sciences, Missouri State University, Springfield, Missouri, 65897
| | - Wesley A Dowler
- Department of Chemistry, Missouri State University, Springfield, Missouri, 65897
| | - Stephen Kramer
- Department of Chemistry, Missouri State University, Springfield, Missouri, 65897
| | - John M. Dean
- Department of Biomedical Sciences, Missouri State University, Springfield, Missouri, 65897
| | - Robert K. Delong
- Department of Biomedical Sciences, Missouri State University, Springfield, Missouri, 65897
- Corresponding author: R. K. DeLong, Phone: 417-836-5730;
| |
Collapse
|
7
|
Affiliation(s)
- Paolo Ferruti
- Dipartimento di Chimicavia C. Golgi 1920133Milano Italy
- Consorzio Nazionale Interuniversitario di Scienza e Tecnologia dei Materiali (INSTM)via G. Giusti 950121Firenze Italy
| |
Collapse
|
8
|
Maurstad G, Stokke BT, Vårum KM, Strand SP. PEGylated chitosan complexes DNA while improving polyplex colloidal stability and gene transfection efficiency. Carbohydr Polym 2013; 94:436-43. [PMID: 23544560 DOI: 10.1016/j.carbpol.2013.01.015] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2012] [Revised: 12/20/2012] [Accepted: 01/08/2013] [Indexed: 12/20/2022]
Abstract
Chitosan is widely explored as a gene delivery vehicle due to its ability to condense DNA, facilitate transport, and subsequent release allowing gene expression, as well as protecting the DNA. Here, we investigate the enhancement of chitosan-DNA dispersion stability while maintaining transfection efficacy by PEGylation of chitosan. Molecular properties of fully deacetylated chitosans and degree of PEGylation were investigated with respect to compaction of DNA, stability and transfection efficacy. Each of the three chitosan samples with varying chain lengths was PEGylated at three different degrees. The chitosans with degree of PEGylation from 0.6 to 1.9% made polyplexes with DNA. PBS induced colloidal aggregation of polyplexes with initial radius of about 100 nm observed for nonPEGylated chitosans was suppressed for 1.9% PEGylated chitosans. The observed increase in transfection efficacy coinciding with increased polyplex colloidal stability suggests that aggregation of gene-delivery packages may reduce the transfection efficacy.
Collapse
Affiliation(s)
- Gjertrud Maurstad
- Biophysics and Medical Technology, Department of Physics, The Norwegian University of Science and Technology, NTNU, NO-7491 Trondheim, Norway
| | | | | | | |
Collapse
|
9
|
de la Fuente M, Raviña M, Sousa-Herves A, Correa J, Riguera R, Fernandez-Megia E, Sánchez A, Alonso MJ. Exploring the efficiency of gallic acid-based dendrimers and their block copolymers with PEG as gene carriers. Nanomedicine (Lond) 2012; 7:1667-81. [DOI: 10.2217/nnm.12.51] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023] Open
Abstract
The synthesis of a new family of amino-functionalized gallic acid-triethylene glycol (GATG) dendrimers and their block copolymers with polyethylene glycol (PEG) has recently being disclosed. In addition, these dendrimers have shown potential for gene delivery applications, as they efficiently complex nucleic acids and form small and homogeneous dendriplexes. On this basis, the present study aimed to explore the interaction of the engineered dendriplexes with blood components, as well as their stability, cytotoxicity and ability to enter and transfect mammalian cells. Results show that GATG dendrimers can form stable dendriplexes, protect the associated pDNA from degradation, and are biocompatible with HEK-293T cells and erythrocytes. More importantly, dendriplexes are effectively internalized by HEK-293T cells, which are successfully transfected. Besides, PEGylation has a marked influence on the properties of the resulting dendriplexes. While PEGylated GATG dendrimers have improved biocompatibility, the long PEG chains limit their uptake by HEK-293T cells, and thus, their ability to transfect them. As a consequence, the degree of PEGylation in dendriplexes containing dendrimer/block copolymer mixtures emerges as an important parameter to be modulated in order to obtain an optimized stealth formulation able to effectively induce the expression of the encoded protein. Original submitted 29 November 2011; Revised submitted 8 March 2012; Published online 20 July 2012
Collapse
Affiliation(s)
- María de la Fuente
- Department of Pharmacy & Pharmaceutical Technology, Center for Molecular Medicine & Chronic Diseases, University of Santiago de Compostela, 15782 Santiago de Compostela, Spain
| | - Manuela Raviña
- Department of Pharmacy & Pharmaceutical Technology, School of Pharmacy, University of Santiago de Compostela, Spain
| | - Ana Sousa-Herves
- Department of Organic Chemistry, Center for Research in Biological Chemistry & Molecular Materials (CIQUS), University of Santiago de Compostela, Spain
| | - Juan Correa
- Department of Organic Chemistry, Center for Research in Biological Chemistry & Molecular Materials (CIQUS), University of Santiago de Compostela, Spain
| | - Ricardo Riguera
- Department of Organic Chemistry, Center for Research in Biological Chemistry & Molecular Materials (CIQUS), University of Santiago de Compostela, Spain
| | - Eduardo Fernandez-Megia
- Department of Organic Chemistry, Center for Research in Biological Chemistry & Molecular Materials (CIQUS), University of Santiago de Compostela, Spain
| | - Alejandro Sánchez
- Department of Pharmacy & Pharmaceutical Technology, School of Pharmacy, University of Santiago de Compostela, Spain
- Molecular Image Group, Instituto de Investigacion Sanitaria – Clinical Research Institute – of Santiago de Compostela (IDIS), Spain
| | - María José Alonso
- Department of Pharmacy & Pharmaceutical Technology, Center for Molecular Medicine & Chronic Diseases, University of Santiago de Compostela, 15782 Santiago de Compostela, Spain
| |
Collapse
|
10
|
Poly(amidoamine) polymers: soluble linear amphiphilic drug-delivery systems for genes, proteins and oligonucleotides. Ther Deliv 2012; 2:907-17. [PMID: 22833902 DOI: 10.4155/tde.11.55] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023] Open
Abstract
Polymer-drug and polymer-protein conjugates are emerging as a robust and well-characterized class of therapeutic entity. Although there are no low-molecular-weight soluble polymer conjugates in routine clinical use, there are many examples of routinely used high-molecular-weight drugs conjugated to soluble polymers (e.g., Oncospar). Advances in synthetic polymer chemistry have fostered the development of linear poly(amidoamine)s (PAA)s that impart both biodegradability, 'smart' (pH responsive) biological activity and biocompatibility. In their linear form, such as hyper-branched poly(amidoamine) (PAMAM) dendrimers, linear PAAs can be used to deliver large therapeutic entities such as peptides, proteins and genes to either the cytosol or nucleus. Furthermore, these polymers offer great potential in vivo due to their ability to either target the liver or be directed away from the liver and enter tumor mass via the enhanced permeability and retention (EPR) effect. PAAs also exhibit minimal toxicity (dependent upon backbone chemistry), relative to well-characterized polymers used for gene delivery. The propensity of PAAs to modulate intracellular trafficking resulting in their cytosolic translocation has also recently been quantified in vivo and is the primary focus of this article.
Collapse
|
11
|
Illum L. Stanley (Bob) Davis: An outstanding contribution to drug delivery. J Drug Target 2010; 18:702-3. [PMID: 21029034 DOI: 10.3109/1061186x.2010.529267] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
|
12
|
Cavalli R, Bisazza A, Sessa R, Primo L, Fenili F, Manfredi A, Ranucci E, Ferruti P. Amphoteric Agmatine Containing Polyamidoamines as Carriers for Plasmid DNA In Vitro and In Vivo Delivery. Biomacromolecules 2010; 11:2667-74. [DOI: 10.1021/bm100685t] [Citation(s) in RCA: 43] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Roberta Cavalli
- Dipartimento di Scienza e Tecnologia del Farmaco, Università degli Studi di Torino, Via P. Giuria 9, 10125 Torino, Italy, Dipartimento di Scienze Cliniche e Biologiche, Università di Torino and Institute for Cancer Research and Treatment, Strada Provinciale 142, Km 3.95, 10060 Candiolo, Torino, Italy, and Dipartimento di Chimica Organica e Industriale, Università degli Studi di Milano, via Venezian 21, 20133 Milano, Italy
| | - Agnese Bisazza
- Dipartimento di Scienza e Tecnologia del Farmaco, Università degli Studi di Torino, Via P. Giuria 9, 10125 Torino, Italy, Dipartimento di Scienze Cliniche e Biologiche, Università di Torino and Institute for Cancer Research and Treatment, Strada Provinciale 142, Km 3.95, 10060 Candiolo, Torino, Italy, and Dipartimento di Chimica Organica e Industriale, Università degli Studi di Milano, via Venezian 21, 20133 Milano, Italy
| | - Roberto Sessa
- Dipartimento di Scienza e Tecnologia del Farmaco, Università degli Studi di Torino, Via P. Giuria 9, 10125 Torino, Italy, Dipartimento di Scienze Cliniche e Biologiche, Università di Torino and Institute for Cancer Research and Treatment, Strada Provinciale 142, Km 3.95, 10060 Candiolo, Torino, Italy, and Dipartimento di Chimica Organica e Industriale, Università degli Studi di Milano, via Venezian 21, 20133 Milano, Italy
| | - Luca Primo
- Dipartimento di Scienza e Tecnologia del Farmaco, Università degli Studi di Torino, Via P. Giuria 9, 10125 Torino, Italy, Dipartimento di Scienze Cliniche e Biologiche, Università di Torino and Institute for Cancer Research and Treatment, Strada Provinciale 142, Km 3.95, 10060 Candiolo, Torino, Italy, and Dipartimento di Chimica Organica e Industriale, Università degli Studi di Milano, via Venezian 21, 20133 Milano, Italy
| | - Fabio Fenili
- Dipartimento di Scienza e Tecnologia del Farmaco, Università degli Studi di Torino, Via P. Giuria 9, 10125 Torino, Italy, Dipartimento di Scienze Cliniche e Biologiche, Università di Torino and Institute for Cancer Research and Treatment, Strada Provinciale 142, Km 3.95, 10060 Candiolo, Torino, Italy, and Dipartimento di Chimica Organica e Industriale, Università degli Studi di Milano, via Venezian 21, 20133 Milano, Italy
| | - Amedea Manfredi
- Dipartimento di Scienza e Tecnologia del Farmaco, Università degli Studi di Torino, Via P. Giuria 9, 10125 Torino, Italy, Dipartimento di Scienze Cliniche e Biologiche, Università di Torino and Institute for Cancer Research and Treatment, Strada Provinciale 142, Km 3.95, 10060 Candiolo, Torino, Italy, and Dipartimento di Chimica Organica e Industriale, Università degli Studi di Milano, via Venezian 21, 20133 Milano, Italy
| | - Elisabetta Ranucci
- Dipartimento di Scienza e Tecnologia del Farmaco, Università degli Studi di Torino, Via P. Giuria 9, 10125 Torino, Italy, Dipartimento di Scienze Cliniche e Biologiche, Università di Torino and Institute for Cancer Research and Treatment, Strada Provinciale 142, Km 3.95, 10060 Candiolo, Torino, Italy, and Dipartimento di Chimica Organica e Industriale, Università degli Studi di Milano, via Venezian 21, 20133 Milano, Italy
| | - Paolo Ferruti
- Dipartimento di Scienza e Tecnologia del Farmaco, Università degli Studi di Torino, Via P. Giuria 9, 10125 Torino, Italy, Dipartimento di Scienze Cliniche e Biologiche, Università di Torino and Institute for Cancer Research and Treatment, Strada Provinciale 142, Km 3.95, 10060 Candiolo, Torino, Italy, and Dipartimento di Chimica Organica e Industriale, Università degli Studi di Milano, via Venezian 21, 20133 Milano, Italy
| |
Collapse
|
13
|
Raviña M, de la Fuente M, Correa J, Sousa-Herves A, Pinto J, Fernandez-Megia E, Riguera R, Sanchez A, Alonso MJ. Core−Shell Dendriplexes with Sterically Induced Stoichiometry for Gene Delivery. Macromolecules 2010. [DOI: 10.1021/ma100785m] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Affiliation(s)
- Manuela Raviña
- Department of Pharmacy and Pharmaceutical Technology, University of Santiago de Compostela, 15782 Santiago de Compostela, Spain
| | - Maria de la Fuente
- Department of Pharmacy and Pharmaceutical Technology, University of Santiago de Compostela, 15782 Santiago de Compostela, Spain
| | - Juan Correa
- Department of Organic Chemistry and Center for Research in Biological Chemistry and Molecular Materials, University of Santiago de Compostela, Jenaro de la Fuente s/n, 15782 Santiago de Compostela, Spain
| | - Ana Sousa-Herves
- Department of Organic Chemistry and Center for Research in Biological Chemistry and Molecular Materials, University of Santiago de Compostela, Jenaro de la Fuente s/n, 15782 Santiago de Compostela, Spain
| | - Jorge Pinto
- Department of Pharmacy and Pharmaceutical Technology, University of Santiago de Compostela, 15782 Santiago de Compostela, Spain
| | - Eduardo Fernandez-Megia
- Department of Organic Chemistry and Center for Research in Biological Chemistry and Molecular Materials, University of Santiago de Compostela, Jenaro de la Fuente s/n, 15782 Santiago de Compostela, Spain
| | - Ricardo Riguera
- Department of Organic Chemistry and Center for Research in Biological Chemistry and Molecular Materials, University of Santiago de Compostela, Jenaro de la Fuente s/n, 15782 Santiago de Compostela, Spain
| | - Alejandro Sanchez
- Department of Pharmacy and Pharmaceutical Technology, University of Santiago de Compostela, 15782 Santiago de Compostela, Spain
| | - Maria Jose Alonso
- Department of Pharmacy and Pharmaceutical Technology, University of Santiago de Compostela, 15782 Santiago de Compostela, Spain
| |
Collapse
|
14
|
Lam JKW, Armes SP, Lewis AL, Stolnik S. Folate conjugated phosphorylcholine-based polycations for specific targeting in nucleic acids delivery. J Drug Target 2009; 17:512-23. [PMID: 19534582 DOI: 10.1080/10611860903023312] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
Abstract
Folic acid has been investigated as a targeting ligand for imaging and therapeutic agent for over a decade; however, studies on its use in targeting of nonviral gene or nucleic acids delivery systems are sparse. This study assesses potential application of a new folic acid conjugate with aminomethacrylate-phosphoryl-choline based copolymer (DMAEMA-MPC-FA) as a targeting gene delivery vector. The folate-conjugated polymers produce colloidally stable polyplexes with a particle size <200 nm and demonstrate the ability to protect DNA from enzymatic degradation to a certain extent. In cells that overexpress folate receptors (MCF-7 and KB cultures), the conjugated systems show a folate-specific association and achieved significantly enhanced transfection efficiency, compared to the nonconjugated control, with a dramatically reduced nonspecific cellular association. The transfection enhancement is achieved without a corresponding increase in cellular association, suggesting that an internal cellular trafficking of folate-conjugated system may be altered, resulting in an increased transfection efficacy. In summary, a new folate-conjugated aminomethacrylate-phosphorylcholine copolymer is capable of forming colloidal complexes with DNA, modulating their specific cell uptake and improving the level of cell transfection in folate expressing cells.
Collapse
Affiliation(s)
- J K W Lam
- School of Pharmacy, University of Nottingham, Nottingham, UK
| | | | | | | |
Collapse
|
15
|
Ranucci E, Suardi MA, Annunziata R, Ferruti P, Chiellini F, Bartoli C. Poly(amidoamine) Conjugates with Disulfide-Linked Cholesterol Pendants Self-Assembling into Redox-Sensitive Nanoparticles. Biomacromolecules 2008; 9:2693-704. [DOI: 10.1021/bm800655s] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Elisabetta Ranucci
- Dipartimento di Chimica Organica e Industriale, Università di Milano, via Venezian 21, 20133 Milano, Italy, CIMAINA, Centro Interdisciplinare Materiali e Interfacce Nanostrutturate, via Golgi 19, 20133 Milano, Italy, and Laboratorio di Materiali Polimerici Bioattivi per Applicazioni Biomediche ed Ambientali (BIOlab), UdR INSTM, Dipartimento di Chimica e Chimica Industriale, Università di Pisa, via Vecchia Livornese 1291, 56122 S. Piero a Grado, Pisa, Italy
| | - Marco A. Suardi
- Dipartimento di Chimica Organica e Industriale, Università di Milano, via Venezian 21, 20133 Milano, Italy, CIMAINA, Centro Interdisciplinare Materiali e Interfacce Nanostrutturate, via Golgi 19, 20133 Milano, Italy, and Laboratorio di Materiali Polimerici Bioattivi per Applicazioni Biomediche ed Ambientali (BIOlab), UdR INSTM, Dipartimento di Chimica e Chimica Industriale, Università di Pisa, via Vecchia Livornese 1291, 56122 S. Piero a Grado, Pisa, Italy
| | - Rita Annunziata
- Dipartimento di Chimica Organica e Industriale, Università di Milano, via Venezian 21, 20133 Milano, Italy, CIMAINA, Centro Interdisciplinare Materiali e Interfacce Nanostrutturate, via Golgi 19, 20133 Milano, Italy, and Laboratorio di Materiali Polimerici Bioattivi per Applicazioni Biomediche ed Ambientali (BIOlab), UdR INSTM, Dipartimento di Chimica e Chimica Industriale, Università di Pisa, via Vecchia Livornese 1291, 56122 S. Piero a Grado, Pisa, Italy
| | - Paolo Ferruti
- Dipartimento di Chimica Organica e Industriale, Università di Milano, via Venezian 21, 20133 Milano, Italy, CIMAINA, Centro Interdisciplinare Materiali e Interfacce Nanostrutturate, via Golgi 19, 20133 Milano, Italy, and Laboratorio di Materiali Polimerici Bioattivi per Applicazioni Biomediche ed Ambientali (BIOlab), UdR INSTM, Dipartimento di Chimica e Chimica Industriale, Università di Pisa, via Vecchia Livornese 1291, 56122 S. Piero a Grado, Pisa, Italy
| | - Federica Chiellini
- Dipartimento di Chimica Organica e Industriale, Università di Milano, via Venezian 21, 20133 Milano, Italy, CIMAINA, Centro Interdisciplinare Materiali e Interfacce Nanostrutturate, via Golgi 19, 20133 Milano, Italy, and Laboratorio di Materiali Polimerici Bioattivi per Applicazioni Biomediche ed Ambientali (BIOlab), UdR INSTM, Dipartimento di Chimica e Chimica Industriale, Università di Pisa, via Vecchia Livornese 1291, 56122 S. Piero a Grado, Pisa, Italy
| | - Cristina Bartoli
- Dipartimento di Chimica Organica e Industriale, Università di Milano, via Venezian 21, 20133 Milano, Italy, CIMAINA, Centro Interdisciplinare Materiali e Interfacce Nanostrutturate, via Golgi 19, 20133 Milano, Italy, and Laboratorio di Materiali Polimerici Bioattivi per Applicazioni Biomediche ed Ambientali (BIOlab), UdR INSTM, Dipartimento di Chimica e Chimica Industriale, Università di Pisa, via Vecchia Livornese 1291, 56122 S. Piero a Grado, Pisa, Italy
| |
Collapse
|
16
|
Heyde M, Partridge KA, Howdle SM, Oreffo ROC, Garnett MC, Shakesheff KM. Development of a slow non-viral DNA release system from PDLLA scaffolds fabricated using a supercritical CO2 technique. Biotechnol Bioeng 2007; 98:679-93. [PMID: 17405179 DOI: 10.1002/bit.21446] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
Polyamidoamine polymers (PAA) comprising methylene-bisacrylamide/dimethylethylene-diamine monomers were synthesized, complexed with DNA and incorporated into porous P(DL)LA scaffolds by using a supercritical CO(2) (scCO(2)) technique. Scaffolds were made in a dry state consequently there was a need to lyophilize the complexes. A statistically significant reduction of the transfection efficiency was observed in the absence of trehalose when compared to the original complex after freeze-drying. Increasing concentrations (0-10% w/v) of trehalose were added to the complex prior to freeze-drying. Structure dependent differences in DNA binding were evaluated by gel electrophoresis and thermal transition analysis. TEM and PCS showed aggregate formation after freeze-drying without trehalose. Scaffolds were characterized by pore sizes of 173 +/- 73 microm and a porosity of 71%. The transfection potential of the released DNA was investigated by seeding scaffolds with A549 cells and following firefly luciferase as a marker gene after 48 h exposure. Low but continuous levels of transfection were observed for PAA complexes during a 60-day study. Complexes made with Lipofectaminetrade mark gave initially higher levels of DNA release but no further expression was seen after 40 days. Uncomplexed DNA showed background levels of transfection. Culturing cells on 3D scaffolds showed a benefit in retention of transfection activity with time compared to 2D controls. Transfection levels could be increased when cells were grown in OptiMEM. This study demonstrated that PAA/DNA complexes incorporated into a P(DL)LA scaffold made by using scCO(2) processing exhibited a slow release and extended gene expression profile.
Collapse
Affiliation(s)
- Mieke Heyde
- Division of Advanced Drug Delivery and Tissue Engineering, School of Pharmacy, England, United Kingdom
| | | | | | | | | | | |
Collapse
|
17
|
Abstract
Gene therapy has been deemed the medicine of the future due to its potential to treat many types of diseases. However, many obstacles remain before gene delivery is optimized to specific target cells. Over the last several decades, many approaches to gene delivery have been closely examined. By understanding the factors that determine the efficiency of gene uptake and expression as well as those that influence the toxicity of the vector, we are better able to develop new vector systems. This chapter will provide a brief overview of recent advances in gene delivery, specifically on the development of novel non-viral vectors. The following chapters will provide additional details regarding the evolution of non-viral gene delivery systems.
Collapse
Affiliation(s)
- Christine C Conwell
- Center for Pharmacogenetics, School of Pharmacy, University of Pittsburgh, Pittsburgh, Pennsylvania 15261, USA
| | | |
Collapse
|
18
|
GARNETT MARTIN. NANOMEDICINES: DELIVERING DRUGS USING BOTTOM UP NANOTECHNOLOGY. INTERNATIONAL JOURNAL OF NANOSCIENCE 2005. [DOI: 10.1142/s0219581x05003802] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
The use of nanosized materials changes the way in which drugs are handled by the body and offers opportunities to improve drug delivery. The physiological mechanisms controlling the distribution of nanosized materials (enhanced permeability and retention effect, cellular uptake pathways and opsonisation/elimination of nanoparticles) are described. Two different nanosized drug delivery systems are considered; drug delivery and DNA delivery. The deficiencies of currently available biodegradable polymers for preparation of drug containing nanoparticles are mainly the amount of drug that can be incorporated and the rapid rate of drug release. The development of new biodegradable polymers which can interact with the drug and so significantly increase drug loading and decrease the rate of drug release are outlined. DNA delivery necessitates overcoming a variety of biological barriers. We are developing polyelectrolyte complexes of DNA with cationic polyamidoamines (PAA) as a delivery system. Complexing PAA with DNA results in good transfection of cells in vitro. However, in vivo, a more complex arrangement of PAA, Polyethylene glycol-PAA copolymers, DNA and the use of ligands will be required. Despite these efforts, further developments will be needed in nanotechnology for both drug and DNA nanoparticle delivery systems to achieve our clinical objectives.
Collapse
Affiliation(s)
- MARTIN GARNETT
- School of Pharmacy, University of Nottingham, University Park, Nottingham, NG7 2RD, UK
| |
Collapse
|
19
|
Kim TI, Seo HJ, Choi JS, Jang HS, Baek JU, Kim K, Park JS. PAMAM-PEG-PAMAM: Novel Triblock Copolymer as a Biocompatible and Efficient Gene Delivery Carrier. Biomacromolecules 2004; 5:2487-92. [PMID: 15530067 DOI: 10.1021/bm049563j] [Citation(s) in RCA: 171] [Impact Index Per Article: 8.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
A novel triblock copolymer, PAMAM-block-PEG-block-PAMAM was synthesized and applied as a gene carrier. PAMAM dendrimer is proven to be an efficient gene carrier itself, but it is associated with certain problems such as low water solubility and considerable cytotoxicity. Therefore, we introduced PEG to engineer a nontoxic and highly transfection efficient polymeric gene carrier because PEG is known to convey water-solubility and biocompatibility to the conjugated copolymer. This copolymer could achieve self-assembly with plasmid DNA, forming compact nanosized particles with a narrow size distribution. Fulfilling our expectations, the copolymer was found to form highly water-soluble polyplexes with plasmid DNA, showed little cytotoxicity despite its poor degradability, and finally achieved high transfection efficiency comparable to PEI in 293 cells. Consequently, these data show that an approach involving the introduction of PEG to create a tree-like cationic copolymer possesses a great potential for use in gene delivery systems.
Collapse
Affiliation(s)
- Tae-Il Kim
- School of Chemistry & Molecular Engineering, Seoul National University, San 56-1, Shillim-dong, Kwanak-gu, Seoul 151-742, Korea
| | | | | | | | | | | | | |
Collapse
|
20
|
Deshpande MC, Davies MC, Garnett MC, Williams PM, Armitage D, Bailey L, Vamvakaki M, Armes SP, Stolnik S. The effect of poly(ethylene glycol) molecular architecture on cellular interaction and uptake of DNA complexes. J Control Release 2004; 97:143-56. [PMID: 15147812 DOI: 10.1016/j.jconrel.2004.02.019] [Citation(s) in RCA: 112] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2003] [Accepted: 02/12/2004] [Indexed: 11/22/2022]
Abstract
The cellular uptake of plasmid DNA complexes with a series of tertiary amine methacrylate-ethylene glycol (DMAEMA-EG) copolymers with various architectures was studied using flow cytofluorometry and laser confocal microscopy. The complexes displayed different rates and extents of cellular interaction and internalisation, depending on the copolymer molecular architecture. In general, introduction of oligo(ethylene glycol) [OEG] or poly(ethylene glycol) [PEG] chains decreased both the interaction and cellular internalisation of the DNA complexes but subtle differences were observed. Two block copolymers, a 'bottle-brush' type DMAEMA-block-OEGMA and a linear DMAEMA-block-PEG copolymer (each containing a total of 45 EG units), displayed similar uptake profiles. In contrast, only relatively low uptake of complexes formed by a comb-type statistical copolymer, DMAEMA-stat-PEGMA, was observed, despite each PEG chain comprising 45 EG units. Similar trends were observed with three cell lines, A549, HepG2 and COS-7. However, the absolute values were cell-dependent, with COS-7 cells displaying both the highest rate and extent of uptake. Studies of the association and uptake of the complexes demonstrated that cell associations generally increased over time, with the uptake level and the time profile depending on the polymer architecture. Confocal microscopy studies confirmed that, with the exception of the poorly transfecting comb-type copolymer, the association of complexes with cells resulted in endocytosis.
Collapse
Affiliation(s)
- Mangesh C Deshpande
- School of Pharmacy, University of Nottingham, University Park, Nottingham NG7 2RD, UK
| | | | | | | | | | | | | | | | | |
Collapse
|
21
|
Chen CY, Zhu ZH. Relationship between expression of P-glycoprotein and efficacy of chemotherapy in gastric cancer. Shijie Huaren Xiaohua Zazhi 2003; 11:36-38. [DOI: 10.11569/wcjd.v11.i1.36] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Abstract
AIM: To investigate the significance of the expression of P-glycoprotein and the relationship between its expression and the efficacy of chemotherapy in patients with gastric cancer.
METHODS: P-glycoprotein was examined by immunohistochemical staining in 101 specimens of paraffin embedded gastric cancer tissues.
RESULTS: The expression rates of P-glycoprotein in normal gastric mucosa, paracancerous tissues and gastric cancer tissues were 13%, 22% and 43%, respectively (P < 0.05). The expression rates of P-glycoprotein in the highly and moderately differentiated tumors (58% and 80%, respectively) were significantly higher than those in the lowly and poorly differentiated tumors (36% and 25%, respectively) (P < 0.01). The postoperative cumulative survival rate of the patients receiving chemotherapy was significantly higher than that of the patients without chemotherapy in P-glycoprotein-negative patients with gastric cancer (P < 0.01).
CONCLUSION: The expression of P-glycoprotein was correlated with the degree of tumor differentiation and influenced the efficacy of postoperative chemotherapy.
Collapse
|