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Shayestehfar M, Farahi S, Kheiri Yeganeh Azar B, Memari A, Baluchnejadmojarad T, Faghihi F. Generating Human Induced Pluripotent Stem Cell Via Low-Dose Polyethylenimine-Mediated Transfection: An Optimized Protocol. DNA Cell Biol 2022; 41:903-916. [PMID: 35984994 DOI: 10.1089/dna.2022.0331] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
Human dermal fibroblasts (HDFs) can be reprogrammed through different strategies to generate human induced pluripotent stem cells (hiPSCs). However, most of these strategies require high-cost materials and specific equipment not readily accessible in most laboratories. Hence, liposomal and virus-based techniques can replace with polyethylenimine (PEI)-mediated transfection to overcome these challenges. However, few researchers have addressed the PEI's ability to transfect HDFs. This study used PEI reagent to transfer oriP/EBNA1-based vector into HDFs to produce hiPSC lines. We first described conditions allowing the efficient transfection of HDFs with low cytotoxicity and without specific types of equipment and optimized several parameters relevant to the transfection procedure. We then monitored the effect of different N/P ratios on transfection efficiency and cytotoxicity using flow cytometry and fluorescent microscopy. By the results, we found that transfection efficiency was greatly affected by plasmid DNA concentration, PEI concentration, order of combining reagents, serum presence in polyplexes, and the duration of serum starvations. Moreover, using the optimized condition, we found that the N/P ratio of 3 achieved the highest percentage of HDFs positive for green fluorescent protein plasmid (∼40%) with minimal cell toxicity. We finally generated hiPSCs using the optimized protocol and oriP/EBNA1-based vectors. We confirmed hiPSC formation by characterizing tests: alkaline phosphatase staining, immunocytochemistry assay, real-time PCR analysis, in vitro differentiation into three germ layers, and karyotyping test. In conclusion, our results indicated that 25 kDa branched PEI could efficiently transfect HDFs toward generating hiPSCs via a simple, cost-effective, and optimized condition.
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Affiliation(s)
- Monir Shayestehfar
- Department of Neuroscience, Faculty of Advanced Technology in Medicine, Iran University of Medical Sciences, Tehran, Iran
| | - Sara Farahi
- Biotechnology Department, Shahid Beheshti University of medical science, Tehran, Iran
| | - Behjat Kheiri Yeganeh Azar
- Department of Molecular Medicine, Faculty of Advanced Technology in Medicine, Iran University of Medical Sciences, Tehran, Iran
| | - Amirhossein Memari
- Sports Medicine Research Center, Neuroscience Institute, Tehran University of Medical Sciences, Tehran, Iran
| | | | - Faezeh Faghihi
- Cellular and Molecular Research Center, Iran University of Medical Sciences, Tehran, Iran
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Controlled Co-delivery of pPDGF-B and pBMP-2 from intraoperatively bioprinted bone constructs improves the repair of calvarial defects in rats. Biomaterials 2022; 281:121333. [PMID: 34995904 PMCID: PMC8810707 DOI: 10.1016/j.biomaterials.2021.121333] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2021] [Revised: 12/13/2021] [Accepted: 12/24/2021] [Indexed: 02/03/2023]
Abstract
Intraoperative bioprinting (IOB), which refers to the bioprinting process performed on a live subject in a surgical setting, has made it feasible to directly deliver gene-activated matrices into craniomaxillofacial (CMF) defect sites. In this study, we demonstrated a novel approach to overcome the current limitations of traditionally fabricated non-viral gene delivery systems through direct IOB of bone constructs into defect sites. We used a controlled co-delivery release of growth factors from a gene-activated matrix (an osteogenic bioink loaded with plasmid-DNAs (pDNA)) to promote bone repair. The controlled co-delivery approach was achieved from the combination of platelet-derived growth factor-B encoded plasmid-DNA (pPDGF-B) and chitosan-nanoparticle encapsulating pDNA encoded with bone morphogenetic protein-2 (CS-NPs(pBMP2)), which facilitated a burst release of pPDGF-B in 10 days, and a sustained release of pBMP-2 for 5 weeks in vitro. The controlled co-delivery approach was tested for its potential to repair critical-sized rat calvarial defects. The controlled-released pDNAs from the intraoperatively bioprinted bone constructs resulted in ∼40% bone tissue formation and ∼90% bone coverage area at 6 weeks compared to ∼10% new bone tissue and ∼25% total bone coverage area in empty defects. The delivery of growth factors incorporated within the intraoperatively bioprinted constructs could pose as an effective way to enhance bone regeneration in patients with cranial injuries in the future.
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Bono N, Coloma Smith B, Moreschi F, Redaelli A, Gautieri A, Candiani G. In silico prediction of the in vitro behavior of polymeric gene delivery vectors. NANOSCALE 2021; 13:8333-8342. [PMID: 33900339 DOI: 10.1039/d0nr09052b] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
Non-viral gene delivery vectors have increasingly come under the spotlight, but their performaces are still far from being satisfactory. Therefore, there is an urgent need for forecasting tools and screening methods to enable the development of ever more effective transfectants. Here, coarse-grained (CG) models of gold standard transfectant poly(ethylene imine)s (PEIs) have been profitably used to investigate and highlight the effect of experimentally-relevant parameters, namely molecular weight (2 vs. 10 kDa) and topologies (linear vs. branched), protonation state, and ammine-to-phosphate ratios (N/Ps), on the complexation and the gene silencing efficiency of siRNA molecules. The results from the in vitro screening of cationic polymers and conditions were used to validate the in silico platform that we developed, such that the hits which came out of the CG models were of high practical relevance. We show that our in silico platform enables to foresee the most suitable conditions for the complexation of relevant siRNA-polycation assemblies, thereby providing a reliable predictive tool to test bench transfectants in silico, and foster the design and development of gene delivery vectors.
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Affiliation(s)
- Nina Bono
- GenT LΛB, Department of Chemistry, Materials and Chemical Engineering "G. Natta", Politecnico di Milano, 20131 Milan, Italy.
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Pennetta C, Bono N, Ponti F, Bellucci MC, Viani F, Candiani G, Volonterio A. Multifunctional Neomycin-Triazine-Based Cationic Lipids for Gene Delivery with Antibacterial Properties. Bioconjug Chem 2021; 32:690-701. [PMID: 33470802 PMCID: PMC8154203 DOI: 10.1021/acs.bioconjchem.0c00616] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
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Cationic
lipids (CLs) have gained significant attention among nonviral
gene delivery vectors due to their ease of synthesis and functionalization
with multivalent moieties. In particular, there is an increasing request
for multifunctional CLs having gene delivery capacity and antibacterial
activity. Herein, we describe the design and synthesis of a novel
class of aminoglycoside (AG)-based multifunctional vectors with high
transfection efficiency and noticeable antibacterial properties. Specifically,
cationic amphiphiles were built on a triazine scaffold, allowing for
an easy derivatization with up to three potentially different substituents,
such as neomycin (Neo) that serves as the polar head and one or two
lipophilic tails, namely stearyl (ST) and oleyl (OL) alkyl chains
and cholesteryl (Chol) tail. With the aim to shed more light on the
effect of different types and numbers of lipophilic moieties on the
ability of CLs to condense and transfect cells, the performance of
Neo–triazine-based derivatives as gene delivery vectors was
evaluated and compared. The ability of Neo–triazine-based derivatives
to act as antimicrobial agents was evaluated as well. Neo–triazine-based
CLs invariably exhibited excellent DNA condensation ability, even
at a low charge ratio (CR, +/−). Besides, each derivative showed
very good transfection performance at its optimal CR on two different
cell lines, along with negligible cytotoxicity. CLs bearing symmetric
two-tailed OL proved to be the most effective in transfection. Interestingly,
Neo–triazine-based derivatives, used as either free lipids
or lipoplexes, exhibited strong antibacterial activity against Gram-negative
bacteria, especially in the case of CLs bearing one or two aliphatic
chains. Altogether, these results highlight the potential of Neo–triazine-based
derivatives as effective multifunctional nonviral gene delivery vectors.
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Affiliation(s)
- Chiara Pennetta
- Department of Chemistry, Materials, and Chemical Engineering "G. Natta", Politecnico di Milano, Via Mancinelli 7, Milan 20131, Italy
| | - Nina Bono
- Department of Chemistry, Materials, and Chemical Engineering "G. Natta", Politecnico di Milano, Via Mancinelli 7, Milan 20131, Italy
| | - Federica Ponti
- Department of Chemistry, Materials, and Chemical Engineering "G. Natta", Politecnico di Milano, Via Mancinelli 7, Milan 20131, Italy.,Laboratory for Biomaterials and Bioengineering, Canada Research Chair I in Biomaterials and Bioengineering for the Innovation in Surgery, Department of Min-Met-Materials Engineering & Research Center of CHU de Quebec, Division of Regenerative Medicine, Laval University, Quebec City, Quebec G1 V 0A6, Canada
| | - Maria Cristina Bellucci
- Department of Food, Environmental and Nutritional Sciences, Università degli Studi di Milano, Via Celoria 2, Milan 20133, Italy
| | - Fiorenza Viani
- Consiglio Nazionale delle Ricerche, Istituto di Scienze e Tecnologie Chimiche "G. Natta" (SCITEC), Via Mario Bianco 9, Milan 20131, Italy
| | - Gabriele Candiani
- Department of Chemistry, Materials, and Chemical Engineering "G. Natta", Politecnico di Milano, Via Mancinelli 7, Milan 20131, Italy
| | - Alessandro Volonterio
- Department of Chemistry, Materials, and Chemical Engineering "G. Natta", Politecnico di Milano, Via Mancinelli 7, Milan 20131, Italy.,Consiglio Nazionale delle Ricerche, Istituto di Scienze e Tecnologie Chimiche "G. Natta" (SCITEC), Via Mario Bianco 9, Milan 20131, Italy
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Non-Viral in Vitro Gene Delivery: It is Now Time to Set the Bar! Pharmaceutics 2020; 12:pharmaceutics12020183. [PMID: 32098191 PMCID: PMC7076396 DOI: 10.3390/pharmaceutics12020183] [Citation(s) in RCA: 89] [Impact Index Per Article: 22.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2020] [Revised: 02/18/2020] [Accepted: 02/19/2020] [Indexed: 01/31/2023] Open
Abstract
Transfection by means of non-viral gene delivery vectors is the cornerstone of modern gene delivery. Despite the resources poured into the development of ever more effective transfectants, improvement is still slow and limited. Of note, the performance of any gene delivery vector in vitro is strictly dependent on several experimental conditions specific to each laboratory. The lack of standard tests has thus largely contributed to the flood of inconsistent data underpinning the reproducibility crisis. A way researchers seek to address this issue is by gauging the effectiveness of newly synthesized gene delivery vectors with respect to benchmarks of seemingly well-known behavior. However, the performance of such reference molecules is also affected by the testing conditions. This survey points to non-standardized transfection settings and limited information on variables deemed relevant in this context as the major cause of such misalignments. This review provides a catalog of conditions optimized for the gold standard and internal reference, 25 kDa polyethyleneimine, that can be profitably replicated across studies for the sake of comparison. Overall, we wish to pave the way for the implementation of standardized protocols in order to make the evaluation of the effectiveness of transfectants as unbiased as possible.
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Beals N, Kasibhatla N, Basu S. Efficient Delivery of Plasmid DNA Using Incorporated Nucleotides for Precise Conjugation of Targeted Nanoparticles. ACS APPLIED BIO MATERIALS 2019; 2:717-727. [DOI: 10.1021/acsabm.8b00596] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
- Nathan Beals
- Department of Chemistry and Biochemistry, Kent State University, Kent, Ohio 44242, United States
| | - Nithya Kasibhatla
- Department of Chemistry and Biochemistry, Kent State University, Kent, Ohio 44242, United States
| | - Soumitra Basu
- Department of Chemistry and Biochemistry, Kent State University, Kent, Ohio 44242, United States
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Bono N, Pennetta C, Sganappa A, Giupponi E, Sansone F, Volonterio A, Candiani G. Design and synthesis of biologically active cationic amphiphiles built on the calix[4]arene scaffold. Int J Pharm 2018; 549:436-445. [DOI: 10.1016/j.ijpharm.2018.08.020] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2018] [Revised: 07/27/2018] [Accepted: 08/13/2018] [Indexed: 12/14/2022]
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Pezzoli D, Giupponi E, Mantovani D, Candiani G. Size matters for in vitro gene delivery: investigating the relationships among complexation protocol, transfection medium, size and sedimentation. Sci Rep 2017; 7:44134. [PMID: 28272487 PMCID: PMC5341125 DOI: 10.1038/srep44134] [Citation(s) in RCA: 78] [Impact Index Per Article: 11.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2016] [Accepted: 02/03/2017] [Indexed: 02/06/2023] Open
Abstract
Although branched and linear polyethylenimines (bPEIs and lPEIs) are gold standard transfectants, a systematic analysis of the effects of the preparation protocol of polyplexes and the composition of the transfection medium on their physicochemical behaviour and effectiveness in vitro have been much neglected, undermining in some way the identification of precise structure-function relationships. This work aimed to address these issues. bPEI/DNA and lPEI/DNA, prepared using two different modes of addition of reagents, gave rise to polyplexes with exactly the same chemical composition but differing in dimensions. Upon dilution in serum-free medium, the size of any kind of polyplex promptly rose over time while remained invariably stable in complete DMEM. Of note, the bigger the dimension of polyplexes (in the nano- to micrometer range), the greater their efficiency in vitro. Besides, centrifugal sedimentation of polyplexes displaying different dimensions to speed up and enhance their settling onto cells boosted transfection efficiencies. Conversely, transgene expression was significantly blunted in cells held upside-down and transfected, definitively pointing out the impact of gravitational sedimentation of polyplexes on their transfection efficiency. Overall, much more attention must be paid to the actual polyplex size that relies on the complexation conditions and the transfection medium.
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Affiliation(s)
- Daniele Pezzoli
- Research Unit Milano Politecnico, National Interuniversity Consortium of Materials Science and Technology - INSTM, Via Mancinelli 7, Milan 20131, Italy.,Laboratory for Biomaterials and Bioengineering, CRC-I, Department of Mining, Metallurgical and Materials Engineering &CHU de Quebec Research Centre, Laval University, 10 rue de l'Espinay, Quebec City (QC) G1L 3L5, Canada
| | - Elisa Giupponi
- Department of Chemistry, Materials and Chemical Engineering "Giulio Natta", Politecnico di Milano, Via Mancinelli 7, Milan 20131, Italy
| | - Diego Mantovani
- Laboratory for Biomaterials and Bioengineering, CRC-I, Department of Mining, Metallurgical and Materials Engineering &CHU de Quebec Research Centre, Laval University, 10 rue de l'Espinay, Quebec City (QC) G1L 3L5, Canada
| | - Gabriele Candiani
- Research Unit Milano Politecnico, National Interuniversity Consortium of Materials Science and Technology - INSTM, Via Mancinelli 7, Milan 20131, Italy.,Department of Chemistry, Materials and Chemical Engineering "Giulio Natta", Politecnico di Milano, Via Mancinelli 7, Milan 20131, Italy
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Malloggi C, Pezzoli D, Magagnin L, De Nardo L, Mantovani D, Tallarita E, Candiani G. Comparative evaluation and optimization of off-the-shelf cationic polymers for gene delivery purposes. Polym Chem 2015. [DOI: 10.1039/c5py00915d] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Commercially sourced cationic polymers for gene delivery are thoroughly characterized, compared and optimized.
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Affiliation(s)
- C. Malloggi
- Department of Chemistry
- Materials and Chemical Engineering “Giulio Natta”
- Politecnico di Milano
- 20131 Milan
- Italy
| | - D. Pezzoli
- Politecnico di Milano Research Unit
- National Interuniversity Consortium of Materials Science and Technology – INSTM
- Milan
- Italy
| | - L. Magagnin
- Department of Chemistry
- Materials and Chemical Engineering “Giulio Natta”
- Politecnico di Milano
- 20131 Milan
- Italy
| | - L. De Nardo
- Department of Chemistry
- Materials and Chemical Engineering “Giulio Natta”
- Politecnico di Milano
- 20131 Milan
- Italy
| | - D. Mantovani
- Laboratory for Biomaterials and Bioengineering
- CRC-I
- Department of Mining
- Metallurgical and Materials Engineering & CHU de Quebec Research Centre
- Laval University
| | - E. Tallarita
- Department of Chemistry
- Materials and Chemical Engineering “Giulio Natta”
- Politecnico di Milano
- 20131 Milan
- Italy
| | - G. Candiani
- Department of Chemistry
- Materials and Chemical Engineering “Giulio Natta”
- Politecnico di Milano
- 20131 Milan
- Italy
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