1
|
Krishnan N, Peng FX, Mohapatra A, Fang RH, Zhang L. Genetically engineered cellular nanoparticles for biomedical applications. Biomaterials 2023; 296:122065. [PMID: 36841215 PMCID: PMC10542936 DOI: 10.1016/j.biomaterials.2023.122065] [Citation(s) in RCA: 11] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2022] [Revised: 02/14/2023] [Accepted: 02/18/2023] [Indexed: 02/22/2023]
Abstract
In recent years, nanoparticles derived from cellular membranes have been increasingly explored for the prevention and treatment of human disease. With their flexible design and ability to interface effectively with the surrounding environment, these biomimetic nanoparticles can outperform their traditional synthetic counterparts. As their popularity has increased, researchers have developed novel ways to modify the nanoparticle surface to introduce new or enhanced capabilities. Moving beyond naturally occurring materials derived from wild-type cells, genetic manipulation has proven to be a robust and flexible method by which nanoformulations with augmented functionalities can be generated. In this review, an overview of genetic engineering approaches to express novel surface proteins is provided, followed by a discussion on the various biomedical applications of genetically modified cellular nanoparticles.
Collapse
Affiliation(s)
- Nishta Krishnan
- Department of NanoEngineering, Chemical Engineering Program, and Moores Cancer Center, University of California San Diego, La Jolla, CA 92093, USA
| | - Fei-Xing Peng
- Department of NanoEngineering, Chemical Engineering Program, and Moores Cancer Center, University of California San Diego, La Jolla, CA 92093, USA
| | - Animesh Mohapatra
- Department of NanoEngineering, Chemical Engineering Program, and Moores Cancer Center, University of California San Diego, La Jolla, CA 92093, USA
| | - Ronnie H Fang
- Department of NanoEngineering, Chemical Engineering Program, and Moores Cancer Center, University of California San Diego, La Jolla, CA 92093, USA.
| | - Liangfang Zhang
- Department of NanoEngineering, Chemical Engineering Program, and Moores Cancer Center, University of California San Diego, La Jolla, CA 92093, USA.
| |
Collapse
|
2
|
Bi H, Tranell J, Harper DC, Lin W, Li J, Hellström AR, Larsson M, Rubin CJ, Wang C, Sayyab S, Kerje S, Bed’hom B, Gourichon D, Ito S, Wakamatsu K, Tixier-Boichard M, Marks MS, Globisch D, Andersson L. A frame-shift mutation in COMTD1 is associated with impaired pheomelanin pigmentation in chicken. PLoS Genet 2023; 19:e1010724. [PMID: 37068079 PMCID: PMC10138217 DOI: 10.1371/journal.pgen.1010724] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2022] [Revised: 04/27/2023] [Accepted: 03/28/2023] [Indexed: 04/18/2023] Open
Abstract
The biochemical pathway regulating the synthesis of yellow/red pheomelanin is less well characterized than the synthesis of black/brown eumelanin. Inhibitor of gold (IG phenotype) is a plumage colour variant in chicken that provides an opportunity to further explore this pathway since the recessive allele (IG) at this locus is associated with a defect in the production of pheomelanin. IG/IG homozygotes display a marked dilution of red pheomelanin pigmentation, whilst black pigmentation (eumelanin) is only slightly affected. Here we show that a 2-base pair insertion (frame-shift mutation) in the 5th exon of the Catechol-O-methyltransferase containing domain 1 gene (COMTD1), expected to cause a complete or partial loss-of-function of the COMTD1 enzyme, shows complete concordance with the IG phenotype within and across breeds. We show that the COMTD1 protein is localized to mitochondria in pigment cells. Knockout of Comtd1 in a mouse melanocytic cell line results in a reduction in pheomelanin metabolites and significant alterations in metabolites of glutamate/glutathione, riboflavin, and the tricarboxylic acid cycle. Furthermore, COMTD1 overexpression enhanced cellular proliferation following chemical-induced transfection, a potential inducer of oxidative stress. These observations suggest that COMTD1 plays a protective role for melanocytes against oxidative stress and that this supports their ability to produce pheomelanin.
Collapse
Affiliation(s)
- Huijuan Bi
- Science for Life Laboratory, Department of Medical Biochemistry and Microbiology, Uppsala University, Uppsala, Sweden
| | - Jonas Tranell
- Science for Life Laboratory, Department of Medical Biochemistry and Microbiology, Uppsala University, Uppsala, Sweden
| | - Dawn C. Harper
- Department of Pathology & Laboratory Medicine and Department of Physiology, Children’s Hospital of Philadelphia and University of Pennsylvania Perelman School of Medicine, Philadelphia, United States of America
| | - Weifeng Lin
- Department of Chemistry - BMC, Uppsala University, Uppsala, Sweden
| | - Jingyi Li
- Key Laboratory of Agricultural Animal Genetics, Breeding and Reproduction of Ministry of Education, College of Animal Science and Technology, Huazhong Agricultural University, Wuhan, Hubei, China
| | - Anders R. Hellström
- Science for Life Laboratory, Department of Medical Biochemistry and Microbiology, Uppsala University, Uppsala, Sweden
| | - Mårten Larsson
- Science for Life Laboratory, Department of Medical Biochemistry and Microbiology, Uppsala University, Uppsala, Sweden
| | - Carl-Johan Rubin
- Science for Life Laboratory, Department of Medical Biochemistry and Microbiology, Uppsala University, Uppsala, Sweden
| | - Chao Wang
- Science for Life Laboratory, Department of Medical Biochemistry and Microbiology, Uppsala University, Uppsala, Sweden
| | - Shumaila Sayyab
- Department of Animal Breeding and Genetics, Swedish University of Agricultural Sciences, Uppsala, Sweden
| | - Susanne Kerje
- Science for Life Laboratory, Department of Medical Biochemistry and Microbiology, Uppsala University, Uppsala, Sweden
| | - Bertrand Bed’hom
- Université Paris-Saclay, INRAE, AgroParisTech, GABI, F-78350 Jouy-en-Josas, France
| | | | - Shosuke Ito
- Institute for Melanin Chemistry, Fujita Health University, Toyoake, Aichi, Japan
| | - Kazumasa Wakamatsu
- Institute for Melanin Chemistry, Fujita Health University, Toyoake, Aichi, Japan
| | | | - Michael S. Marks
- Department of Pathology & Laboratory Medicine and Department of Physiology, Children’s Hospital of Philadelphia and University of Pennsylvania Perelman School of Medicine, Philadelphia, United States of America
| | - Daniel Globisch
- Department of Chemistry - BMC, Uppsala University, Uppsala, Sweden
| | - Leif Andersson
- Science for Life Laboratory, Department of Medical Biochemistry and Microbiology, Uppsala University, Uppsala, Sweden
- Department of Animal Breeding and Genetics, Swedish University of Agricultural Sciences, Uppsala, Sweden
- Department of Veterinary Integrative Biosciences, Texas A&M University, College Station, United States of America
| |
Collapse
|
3
|
Chong ZX, Yeap SK, Ho WY. Transfection types, methods and strategies: a technical review. PeerJ 2021; 9:e11165. [PMID: 33976969 PMCID: PMC8067914 DOI: 10.7717/peerj.11165] [Citation(s) in RCA: 94] [Impact Index Per Article: 31.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2020] [Accepted: 03/05/2021] [Indexed: 12/17/2022] Open
Abstract
Transfection is a modern and powerful method used to insert foreign nucleic acids into eukaryotic cells. The ability to modify host cells' genetic content enables the broad application of this process in studying normal cellular processes, disease molecular mechanism and gene therapeutic effect. In this review, we summarized and compared the findings from various reported literature on the characteristics, strengths, and limitations of various transfection methods, type of transfected nucleic acids, transfection controls and approaches to assess transfection efficiency. With the vast choices of approaches available, we hope that this review will help researchers, especially those new to the field, in their decision making over the transfection protocol or strategy appropriate for their experimental aims.
Collapse
Affiliation(s)
- Zhi Xiong Chong
- School of Pharmacy, University of Nottingham Malaysia, Semenyih, Selangor, Malaysia
| | - Swee Keong Yeap
- China-ASEAN College of Marine Sciences, Xiamen University Malaysia, Sepang, Selangor, Malaysia
| | - Wan Yong Ho
- School of Pharmacy, University of Nottingham Malaysia, Semenyih, Selangor, Malaysia
| |
Collapse
|
4
|
Rai N, Shihan M, Seeger W, Schermuly RT, Novoyatleva T. Genetic Delivery and Gene Therapy in Pulmonary Hypertension. Int J Mol Sci 2021; 22:ijms22031179. [PMID: 33503992 PMCID: PMC7865388 DOI: 10.3390/ijms22031179] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2020] [Revised: 01/19/2021] [Accepted: 01/20/2021] [Indexed: 02/06/2023] Open
Abstract
Pulmonary hypertension (PH) is a progressive complex fatal disease of multiple etiologies. Hyperproliferation and resistance to apoptosis of vascular cells of intimal, medial, and adventitial layers of pulmonary vessels trigger excessive pulmonary vascular remodeling and vasoconstriction in the course of pulmonary arterial hypertension (PAH), a subgroup of PH. Multiple gene mutation/s or dysregulated gene expression contribute to the pathogenesis of PAH by endorsing the proliferation and promoting the resistance to apoptosis of pulmonary vascular cells. Given the vital role of these cells in PAH progression, the development of safe and efficient-gene therapeutic approaches that lead to restoration or down-regulation of gene expression, generally involved in the etiology of the disease is the need of the hour. Currently, none of the FDA-approved drugs provides a cure against PH, hence innovative tools may offer a novel treatment paradigm for this progressive and lethal disorder by silencing pathological genes, expressing therapeutic proteins, or through gene-editing applications. Here, we review the effectiveness and limitations of the presently available gene therapy approaches for PH. We provide a brief survey of commonly existing and currently applicable gene transfer methods for pulmonary vascular cells in vitro and describe some more recent developments for gene delivery existing in the field of PH in vivo.
Collapse
Affiliation(s)
- Nabham Rai
- Excellence Cluster Cardio-Pulmonary Institute (CPI), Universities of Giessen and Marburg Lung Center (UGMLC), Member of the German Center for Lung Research (DZL), Justus Liebig University of Giessen, Aulweg 130, 35392 Giessen, Germany; (N.R.); (M.S.); (W.S.); (R.T.S.)
| | - Mazen Shihan
- Excellence Cluster Cardio-Pulmonary Institute (CPI), Universities of Giessen and Marburg Lung Center (UGMLC), Member of the German Center for Lung Research (DZL), Justus Liebig University of Giessen, Aulweg 130, 35392 Giessen, Germany; (N.R.); (M.S.); (W.S.); (R.T.S.)
| | - Werner Seeger
- Excellence Cluster Cardio-Pulmonary Institute (CPI), Universities of Giessen and Marburg Lung Center (UGMLC), Member of the German Center for Lung Research (DZL), Justus Liebig University of Giessen, Aulweg 130, 35392 Giessen, Germany; (N.R.); (M.S.); (W.S.); (R.T.S.)
- Max Planck Institute for Heart and Lung Research, 61231 Bad Nauheim, Germany
- Institute for Lung Health (ILH), 35392 Giessen, Germany
| | - Ralph T. Schermuly
- Excellence Cluster Cardio-Pulmonary Institute (CPI), Universities of Giessen and Marburg Lung Center (UGMLC), Member of the German Center for Lung Research (DZL), Justus Liebig University of Giessen, Aulweg 130, 35392 Giessen, Germany; (N.R.); (M.S.); (W.S.); (R.T.S.)
| | - Tatyana Novoyatleva
- Excellence Cluster Cardio-Pulmonary Institute (CPI), Universities of Giessen and Marburg Lung Center (UGMLC), Member of the German Center for Lung Research (DZL), Justus Liebig University of Giessen, Aulweg 130, 35392 Giessen, Germany; (N.R.); (M.S.); (W.S.); (R.T.S.)
- Correspondence:
| |
Collapse
|
5
|
Khalil W, Tiraihi T, Soleimani M, Baheiraei N, Zibara K. Conversion of Neural Stem Cells into Functional Neuron-Like Cells by MicroRNA-218: Differential Expression of Functionality Genes. Neurotox Res 2020; 38:707-722. [PMID: 32696438 DOI: 10.1007/s12640-020-00244-7] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2020] [Revised: 06/01/2020] [Accepted: 06/17/2020] [Indexed: 02/06/2023]
Abstract
Conversion of mesenchymal stem cells (MSC) into neuron-like cells (NLC) is a feasible cell therapy strategy for replacing lost neurons in neuronal disorders. In this study, adipose-derived MSC (ADMSC) were converted into neural stem cells (NSC) via neurosphere. The resulting NSC were then differentiated into NLC by transduction with microRNA-218, using a lentiviral vector. ADMSC, NSC, and NLC were first characterized by flow cytometry, RT-PCR, and immunocytochemistry. The functionality of the NLC was evaluated by qRT-PCR and patch clamp recording. Immunophenotyping of ADMSC showed their immunoreactivity to MSC markers CD90, CD73, CD105, and CD49d, but not to CD31 and CD45. RT-PCR results demonstrated the expression of nestin, neurogenin, neurod1, neurofilament light, and GAP43 genes in NSC while NLC expressed synaptophysin, neurofilament heavy, and GAP43. In addition, NSC morphology changed into multipolar with long processes after transduction with miR-218. Moreover, using qRT-PCR, the expression levels of miR-218 and functionality genes CACNA1C, SNAP25, KCNH1, KCNMA1, and SCN9A were significantly increased in NLC, compared with NSC, and ADMSC at 3 weeks and 5 months post-transduction. Furthermore, the generated NLC expressed significantly higher protein levels of neurofilament heavy polypeptide (NFh) and enolase 2 (Eno2) neuronal markers, compared with ADMSC and NSC. Finally, action potentials were successfully recorded by the generated NLC, using patch clamp. In summary, ADMSC-derived NSC differentiated into functional NLC by transduction with miR-218. The generated NLC expressed functional SNAP25, CACNA1C, KCNH1, KCNMA1, and SCN9A and produced an action potential, which provides useful insights into the generation of functional neuronal cells.
Collapse
Affiliation(s)
- Wissam Khalil
- Department of Anatomical Sciences, Faculty of Medical Sciences, Tarbiat Modares University, Tehran, Iran
| | - Taki Tiraihi
- Department of Anatomical Sciences, Faculty of Medical Sciences, Tarbiat Modares University, Tehran, Iran.
| | - Masoud Soleimani
- Department of Hematology, Faculty of Medical Sciences, Tarbiat Modares University, Tehran, Iran
| | - Nafiseh Baheiraei
- Department of Hematology, Faculty of Medical Sciences, Tarbiat Modares University, Tehran, Iran
| | - Kazem Zibara
- Department of Biology, Faculty of Sciences, Lebanese University, Beirut, Lebanon
| |
Collapse
|
6
|
Ayaz F, Ersan RH, Kuzu B, Algul O. New-Generation Benzimidazole-Based Plasmid Delivery Reagents with High Transfection Efficiencies on the Mammalian Cells. In Vitro Cell Dev Biol Anim 2020; 56:34-41. [DOI: 10.1007/s11626-019-00418-4] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2019] [Accepted: 10/31/2019] [Indexed: 12/11/2022]
|
7
|
Zhang H, Wang J, Hu M, Li BC, Li H, Chen TT, Ren KF, Ji J, Jing QM, Fu GS. Photothermal-assisted surface-mediated gene delivery for enhancing transfection efficiency. Biomater Sci 2019; 7:5177-5186. [PMID: 31588463 DOI: 10.1039/c9bm01284b] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
The development of gene therapy puts forward the requirements for efficient delivery of genetic information into diverse cells. However, in some cases of transfection, especially those for transfecting some primary cells and for delivering large size plasmid DNA (pDNA), the existing conventional transfection methods show poor efficiency. How to further improve transfection efficiency in these hard-to-achieve issues remains a crucial challenge. Here, we report a photothermal-assisted surface-mediated gene delivery based on a polydopamine-polyethylenimine (PDA-PEI) surface. The PDA-PEI surface was prepared through PEI-accelerated dopamine polymerization, which showed efficiency in the immobilization of PEI/pDNA polyplexes and remarkable photothermal properties. Upon IR irradiation, we observed improved transfection efficiencies of two important hard-to-achieve transfection issues, namely the transfection of primary endothelial cells, which are kinds of typical hard-to-transfect cells, and the transfection of cells with large-size pDNA. We demonstrate that the increases of transfection efficiency were due to the hyperthermia-induced pDNA release, the local cell membrane disturbance, and the polyplex internalization. This work highlights the importance of local immobilization and release of pDNA to gene deliveries, showing great potential applications in medical devices in the field of gene therapy.
Collapse
Affiliation(s)
- He Zhang
- Department of Cardiology, Sir Run Run Shaw Hospital, MOE Key Laboratory of Macromolecule Synthesis and Functionalization, Department of Polymer Science and Engineering, Zhejiang University, Hangzhou 310027, China.
| | - Jing Wang
- Department of Cardiology, Sir Run Run Shaw Hospital, MOE Key Laboratory of Macromolecule Synthesis and Functionalization, Department of Polymer Science and Engineering, Zhejiang University, Hangzhou 310027, China.
| | - Mi Hu
- Department of Cardiology, Sir Run Run Shaw Hospital, MOE Key Laboratory of Macromolecule Synthesis and Functionalization, Department of Polymer Science and Engineering, Zhejiang University, Hangzhou 310027, China.
| | - Bo-Chao Li
- Department of Cardiology, Sir Run Run Shaw Hospital, MOE Key Laboratory of Macromolecule Synthesis and Functionalization, Department of Polymer Science and Engineering, Zhejiang University, Hangzhou 310027, China.
| | - Huan Li
- Department of Cardiology, Sir Run Run Shaw Hospital, MOE Key Laboratory of Macromolecule Synthesis and Functionalization, Department of Polymer Science and Engineering, Zhejiang University, Hangzhou 310027, China.
| | - Ting-Ting Chen
- Department of Cardiology, Sir Run Run Shaw Hospital, MOE Key Laboratory of Macromolecule Synthesis and Functionalization, Department of Polymer Science and Engineering, Zhejiang University, Hangzhou 310027, China.
| | - Ke-Feng Ren
- Department of Cardiology, Sir Run Run Shaw Hospital, MOE Key Laboratory of Macromolecule Synthesis and Functionalization, Department of Polymer Science and Engineering, Zhejiang University, Hangzhou 310027, China.
| | - Jian Ji
- Department of Cardiology, Sir Run Run Shaw Hospital, MOE Key Laboratory of Macromolecule Synthesis and Functionalization, Department of Polymer Science and Engineering, Zhejiang University, Hangzhou 310027, China.
| | - Quan-Min Jing
- General Hospital of Northern Theater Command, Shenyang 110004, China.
| | - Guo-Sheng Fu
- Department of Cardiology, Sir Run Run Shaw Hospital, MOE Key Laboratory of Macromolecule Synthesis and Functionalization, Department of Polymer Science and Engineering, Zhejiang University, Hangzhou 310027, China.
| |
Collapse
|
8
|
Li D, Wu Y, Gan C, Yuan R, Xiang Y. Bio-cleavable nanoprobes for target-triggered catalytic hairpin assembly amplification detection of microRNAs in live cancer cells. NANOSCALE 2018; 10:17623-17628. [PMID: 30204195 DOI: 10.1039/c8nr05229h] [Citation(s) in RCA: 44] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/06/2023]
Abstract
The monitoring and imaging of intracellular microRNAs (miRNAs) with specific sequences plays a vital role in cell biology as it can potentially elucidate many cellular processes and diseases related to miRNAs in living cells with accurate information. However, the detection of trace amounts of under-expressed intracellular miRNAs in living cells represents one of the current major challenges. In an effort to address this issue, we describe the establishment of an in cell catalytic hairpin assembly (CHA) signal amplification strategy for imaging under-expressed intracellular miRNAs in this work. Gold nanoparticles functionalized with FAM- and TAMRA-labeled hairpins with disulfide bonds in the stems are readily delivered into cells via endocytosis. Glutathione with evaluated concentrations in cancer cells cleaves the disulfide bonds in the hairpins by reduction to release the hairpins, and the target miRNAs further trigger CHA between the two hairpins to form many DNA duplexes, which bring the FAM and TAMRA labels into close proximity to generate apparently enhanced fluorescence resonance energy transfer (FRET) for the sensitive monitoring of low amounts of under-expressed miRNAs in live cancer cells. Using CHA to amplify the signal output and FRET to reduce the background noise, a significantly enhanced signal-to-noise ratio, thereby high sensitivity, over conventional fluorescence imaging can be realized, making our method particularly suitable for monitoring low levels of intracellular species.
Collapse
Affiliation(s)
- Daxiu Li
- Key Laboratory on Luminescence and Real-Time Analysis, Ministry of Education, School of Chemistry and Chemical Engineering, Southwest University, Chongqing 400715, P. R. China.
| | | | | | | | | |
Collapse
|
9
|
Walsh DP, Heise A, O’Brien FJ, Cryan SA. An efficient, non-viral dendritic vector for gene delivery in tissue engineering. Gene Ther 2017; 24:681-691. [DOI: 10.1038/gt.2017.58] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2016] [Revised: 05/25/2017] [Accepted: 06/16/2017] [Indexed: 12/19/2022]
|
10
|
Novel freeze-dried DDA and TPGS liposomes are suitable for nasal delivery of vaccine. Int J Pharm 2017; 533:179-186. [PMID: 28887219 DOI: 10.1016/j.ijpharm.2017.09.011] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2017] [Revised: 08/31/2017] [Accepted: 09/05/2017] [Indexed: 11/21/2022]
Abstract
There is a pressing need for effective needle-free vaccines that are stable enough for use in the developing world and stockpiling. The inclusion of the cationic lipid DDA and the PEG-containing moiety TPGS into liposomes has the potential to improve mucosal delivery. The aim of this study was to develop stable lyophilized cationic liposomes based on these materials suitable for nasal antigen delivery. Liposomes containing DDA and TPGS were developed. Size and zeta potential measurements, ex vivo, CLSM cell penetration study and cell viability investigations were made. Preliminary immunisation and stability studies using ovalbumin were performed. The liposomes exhibited suitable size and charge for permeation across nasal mucosa. DDA and TPGS increased tissue permeation in ex vivo studies and cell uptake with good cell viability. The liposomes improved immune response both locally and vaginally when compared to i.m administration or control liposomes delivered nasally. Additionally, the lyophilized products demonstrated good stability in terms of Tg, size and antigen retention. This study has shown that the novel liposomes have potential for development as a mucosal vaccine delivery system. Furthermore, the stability of the lyophilized liposomes offers potential additional benefits in terms of thermal stability over liquid formats.
Collapse
|
11
|
Wen H, Yu Q, Yin Y, Pan W, Yang S, Liang D. Shear Effects on Stability of DNA Complexes in the Presence of Serum. Biomacromolecules 2017; 18:3252-3259. [DOI: 10.1021/acs.biomac.7b00900] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Hao Wen
- Beijing National Laboratory
for Molecular Sciences and the Key Laboratory of Polymer Chemistry
and Physics of Ministry of Education, College of Chemistry and Molecular
Engineering, Peking University, Beijing, China, 100871
| | - Qiuhong Yu
- Beijing National Laboratory
for Molecular Sciences and the Key Laboratory of Polymer Chemistry
and Physics of Ministry of Education, College of Chemistry and Molecular
Engineering, Peking University, Beijing, China, 100871
| | - Yudan Yin
- Beijing National Laboratory
for Molecular Sciences and the Key Laboratory of Polymer Chemistry
and Physics of Ministry of Education, College of Chemistry and Molecular
Engineering, Peking University, Beijing, China, 100871
| | - Wei Pan
- Beijing National Laboratory
for Molecular Sciences and the Key Laboratory of Polymer Chemistry
and Physics of Ministry of Education, College of Chemistry and Molecular
Engineering, Peking University, Beijing, China, 100871
| | - Shuang Yang
- Beijing National Laboratory
for Molecular Sciences and the Key Laboratory of Polymer Chemistry
and Physics of Ministry of Education, College of Chemistry and Molecular
Engineering, Peking University, Beijing, China, 100871
| | - Dehai Liang
- Beijing National Laboratory
for Molecular Sciences and the Key Laboratory of Polymer Chemistry
and Physics of Ministry of Education, College of Chemistry and Molecular
Engineering, Peking University, Beijing, China, 100871
| |
Collapse
|
12
|
Sharkey J, Starkey Lewis PJ, Barrow M, Alwahsh SM, Noble J, Livingstone E, Lennen RJ, Jansen MA, Carrion JG, Liptrott N, Forbes S, Adams DJ, Chadwick AE, Forbes SJ, Murray P, Rosseinsky MJ, Goldring CE, Park BK. Functionalized superparamagnetic iron oxide nanoparticles provide highly efficient iron-labeling in macrophages for magnetic resonance-based detection in vivo. Cytotherapy 2017; 19:555-569. [PMID: 28214127 PMCID: PMC5357746 DOI: 10.1016/j.jcyt.2017.01.003] [Citation(s) in RCA: 36] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2016] [Revised: 12/01/2016] [Accepted: 01/02/2017] [Indexed: 12/29/2022]
Abstract
BACKGROUND AIMS Tracking cells during regenerative cytotherapy is crucial for monitoring their safety and efficacy. Macrophages are an emerging cell-based regenerative therapy for liver disease and can be readily labeled for medical imaging. A reliable, clinically applicable cell-tracking agent would be a powerful tool to study cell biodistribution. METHODS Using a recently described chemical design, we set out to functionalize, optimize and characterize a new set of superparamagnetic iron oxide nanoparticles (SPIONs) to efficiently label macrophages for magnetic resonance imaging-based cell tracking in vivo. RESULTS A series of cell health and iron uptake assays determined that positively charged SPIONs (+16.8 mV) could safely label macrophages more efficiently than the formerly approved ferumoxide (-6.7 mV; Endorem) and at least 10 times more efficiently than the clinically approved SPION ferumoxytol (-24.2 mV; Rienso). An optimal labeling time of 4 h at 25 µg/mL was demonstrated to label macrophages of mouse and human origin without any adverse effects on cell viability whilst providing substantial iron uptake (>5 pg Fe/cell) that was retained for 7 days in vitro. SPION labeling caused no significant reduction in phagocytic activity and a shift toward a reversible M1-like phenotype in bone marrow-derived macrophages (BMDMs). Finally, we show that SPION-labeled BMDMs delivered via the hepatic portal vein to mice are localized in the hepatic parenchyma resulting in a 50% drop in T2* in the liver. Engraftment of exogenous cells was confirmed via immunohistochemistry up to 3 weeks posttransplantation. DISCUSSION A positively charged dextran-coated SPION is a promising tool to noninvasively track hepatic macrophage localization for therapeutic monitoring.
Collapse
Affiliation(s)
- Jack Sharkey
- Department of Cellular and Molecular Physiology, Institute of Translational Medicine, University of Liverpool, Liverpool, United Kingdom; UK Regenerative Medicine Platform Safety and Efficacy Hub, United Kingdom
| | - Philip J Starkey Lewis
- UK Regenerative Medicine Platform Safety and Efficacy Hub, United Kingdom; MRC Centre for Regenerative Medicine, Little France Drive, University of Edinburgh, Edinburgh, United Kingdom
| | - Michael Barrow
- UK Regenerative Medicine Platform Safety and Efficacy Hub, United Kingdom; Department of Chemistry, University of Liverpool, Liverpool, United Kingdom
| | - Salamah M Alwahsh
- MRC Centre for Regenerative Medicine, Little France Drive, University of Edinburgh, Edinburgh, United Kingdom
| | - June Noble
- Cardiovascular Sciences, Queens Medical Research Institute, University of Edinburgh, Edinburgh, United Kingdom
| | - Eilidh Livingstone
- MRC Centre for Regenerative Medicine, Little France Drive, University of Edinburgh, Edinburgh, United Kingdom
| | - Ross J Lennen
- Edinburgh Preclinical Imaging, University of Edinburgh, Edinburgh, United Kingdom
| | - Maurits A Jansen
- Edinburgh Preclinical Imaging, University of Edinburgh, Edinburgh, United Kingdom
| | | | - Neill Liptrott
- MRC Centre for Drug Safety Science, Ashton Street, University of Liverpool, Liverpool, United Kingdom; European Nanomedicine Characterisation Laboratory (EU-NCL), Department of Molecular and Clinical Pharmacology, University of Liverpool, Liverpool, United Kingdom
| | - Shareen Forbes
- Cardiovascular Sciences, Queens Medical Research Institute, University of Edinburgh, Edinburgh, United Kingdom
| | - Dave J Adams
- UK Regenerative Medicine Platform Safety and Efficacy Hub, United Kingdom; Department of Chemistry, University of Liverpool, Liverpool, United Kingdom
| | - Amy E Chadwick
- UK Regenerative Medicine Platform Safety and Efficacy Hub, United Kingdom; MRC Centre for Drug Safety Science, Ashton Street, University of Liverpool, Liverpool, United Kingdom
| | - Stuart J Forbes
- UK Regenerative Medicine Platform Safety and Efficacy Hub, United Kingdom; MRC Centre for Regenerative Medicine, Little France Drive, University of Edinburgh, Edinburgh, United Kingdom
| | - Patricia Murray
- Department of Cellular and Molecular Physiology, Institute of Translational Medicine, University of Liverpool, Liverpool, United Kingdom; UK Regenerative Medicine Platform Safety and Efficacy Hub, United Kingdom
| | - Matthew J Rosseinsky
- UK Regenerative Medicine Platform Safety and Efficacy Hub, United Kingdom; Department of Chemistry, University of Liverpool, Liverpool, United Kingdom
| | - Christopher E Goldring
- UK Regenerative Medicine Platform Safety and Efficacy Hub, United Kingdom; MRC Centre for Drug Safety Science, Ashton Street, University of Liverpool, Liverpool, United Kingdom.
| | - B Kevin Park
- UK Regenerative Medicine Platform Safety and Efficacy Hub, United Kingdom; MRC Centre for Drug Safety Science, Ashton Street, University of Liverpool, Liverpool, United Kingdom
| |
Collapse
|
13
|
Chang JH, Tsai PH, Chen W, Chiou SH, Mou CY. Dual delivery of siRNA and plasmid DNA using mesoporous silica nanoparticles to differentiate induced pluripotent stem cells into dopaminergic neurons. J Mater Chem B 2017; 5:3012-3023. [DOI: 10.1039/c7tb00351j] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/30/2023]
Abstract
Nurr1 plasmid and Rex1 siRNA were complexed with positively charged FITC-conjugated mesoporous silica nanoparticles. The pNurr1–siRex1–FMSN(+) was delivered to induced pluripotent stem cells to enhance their differentiation into dopaminergic neurons.
Collapse
Affiliation(s)
- Jen-Hsuan Chang
- Department of Chemistry
- National Taiwan University
- Taipei 106
- Taiwan
| | - Ping-Hsing Tsai
- Department of Medical Research and Education
- Taipei Veterans General Hospital
- Taipei 112
- Taiwan
| | - Wei Chen
- Department of Chemistry
- National Taiwan University
- Taipei 106
- Taiwan
| | - Shih-Hwa Chiou
- Department of Medical Research and Education
- Taipei Veterans General Hospital
- Taipei 112
- Taiwan
| | - Chung-Yuan Mou
- Department of Chemistry
- National Taiwan University
- Taipei 106
- Taiwan
| |
Collapse
|
14
|
Gerile G, Ganbold T, Li Y, Baigude H. Head group configuration increases the biocompatibility of cationic lipids for nucleic acid delivery. J Mater Chem B 2017. [DOI: 10.1039/c7tb00317j] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Abstract
Intracellular delivery of genetic material is a potentially powerful therapeutic approach for the treatment of genetic diseases.
Collapse
Affiliation(s)
- Gerile Gerile
- School of Chemistry & Chemical Engineering
- Inner Mongolia University
- Hohhot
- P. R. China
| | - Tsogzolmaa Ganbold
- School of Chemistry & Chemical Engineering
- Inner Mongolia University
- Hohhot
- P. R. China
| | - Yizheng Li
- School of Chemistry & Chemical Engineering
- Inner Mongolia University
- Hohhot
- P. R. China
| | - Huricha Baigude
- School of Chemistry & Chemical Engineering
- Inner Mongolia University
- Hohhot
- P. R. China
| |
Collapse
|
15
|
Andrzejewska W, Pietralik Z, Skupin M, Kozak M. Structural studies of the formation of lipoplexes between siRNA and selected bis-imidazolium gemini surfactants. Colloids Surf B Biointerfaces 2016; 146:598-606. [DOI: 10.1016/j.colsurfb.2016.06.062] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2016] [Revised: 05/27/2016] [Accepted: 06/28/2016] [Indexed: 10/21/2022]
|
16
|
Andrä J, Gutsmann T, Garidel P, Brandenburg K. Invited review: Mechanisms of endotoxin neutralization by synthetic cationic compounds. ACTA ACUST UNITED AC 2016. [DOI: 10.1177/09680519060120050201] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
A basic challenge in the treatment of septic patients in critical care units is the release of bacterial pathogenicity factors such as lipopolysaccharide (LPS, endotoxin) from the cell envelope of Gram-negative bacteria due to killing by antibiotics. LPS aggregates may interact with serum and membrane proteins such as LBP (lipopolysaccharide-binding protein) and CD14 leading to the observed strong reaction of the immune system. Thus, an effective treatment of patients infected by Gram-negative bacteria must comprise beside bacterial killing the neutralization of endotoxins. Here, data are summarized for synthetic compounds indicating the stepwise development to very effective LPS-neutralizing agents. These data include synthetic peptides, based on the endotoxin-binding domains of natural binding proteins such as lactoferrin, Limulus anti-LPS factor, NK-lysin, and cathelicidins or based on LPS sequestering polyamines. Many of these compounds could be shown to act not only in vitro, but also in vivo (e.g . in animal models of sepsis), and might be useful in future clinical trials and in sepsis therapy.
Collapse
Affiliation(s)
- Jörg Andrä
- Forschungszentrum Borstel, Biophysics Division, Leibniz-Zentrum für Medizin und Biowissenschaften, Borstel, Germany
| | - Thomas Gutsmann
- Forschungszentrum Borstel, Biophysics Division, Leibniz-Zentrum für Medizin und Biowissenschaften, Borstel, Germany
| | - Patrick Garidel
- Institut für Physikalische Chemie, Martin-Luther-Universität Halle-Wittenberg, Halle, Germany
| | - Klaus Brandenburg
- Forschungszentrum Borstel, Biophysics Division, Leibniz-Zentrum für Medizin und Biowissenschaften, Borstel, Germany,
| |
Collapse
|
17
|
RNAi in murine hepatocytes: the agony of choice--a study of the influence of lipid-based transfection reagents on hepatocyte metabolism. Arch Toxicol 2015; 89:1579-88. [PMID: 26233687 DOI: 10.1007/s00204-015-1571-0] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2015] [Accepted: 07/15/2015] [Indexed: 10/23/2022]
Abstract
Primary hepatocyte cell cultures are widely used for studying hepatic diseases with alterations in hepatic glucose and lipid metabolism, such as diabetes and non-alcoholic fatty liver disease. Therefore, small interfering RNAs (siRNAs) provide a potent and specific tool to elucidate the signaling pathways and gene functions involved in these pathologies. Although RNA interference (RNAi) in vitro is frequently used in these investigations, the metabolic alterations elucidated by different siRNA delivery strategies have hardly been investigated in transfected hepatocytes. To elucidate the influence of the most commonly used lipid-based transfection reagents on cultured primary hepatocytes, we studied the cytotoxic effects and transfection efficiencies of INTERFERin(®), Lipofectamine(®)RNAiMAX, and HiPerFect(®). All of these transfection agents displayed low cytotoxicity (5.6-9.0 ± 1.3-3.4%), normal cell viability, and high transfection efficiency (fold change 0.08-0.13 ± 0.03-0.05), and they also favored the satisfactory down-regulation of target gene expression. However, when effects on the metabolome and lipidome were studied, considerable differences were observed among the transfection reagents. Cellular triacylglycerides levels were either up- or down-regulated [maximum fold change: INTERFERin(®) (48 h) 2.55 ± 0.34, HiPerFect(®) (24 h) 0.79 ± 0.08, Lipofectamine(®)RNAiMAX (48 h) 1.48 ± 0.21], and mRNA levels of genes associated with lipid metabolism were differentially affected. Likewise, metabolic functions such as amino acid utilization from were perturbed (alanine, arginine, glycine, ornithine, and pyruvate). In conclusion, these findings demonstrate that the choice of non-viral siRNA delivery agent is critical in hepatocytes. This should be remembered, especially if RNA silencing is used for studying hepatic lipid homeostasis and its regulation.
Collapse
|
18
|
Barrow M, Taylor A, Nieves DJ, Bogart LK, Mandal P, Collins CM, Moore LR, Chalmers JJ, Lévy R, Williams SR, Murray P, Rosseinsky MJ, Adams DJ. Tailoring the surface charge of dextran-based polymer coated SPIONs for modulated stem cell uptake and MRI contrast. Biomater Sci 2015. [PMID: 26222421 DOI: 10.1039/c5bm00011d] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Abstract
Tracking stem cells in vivo using non-invasive techniques is critical to evaluate the efficacy and safety of stem cell therapies. Superparamagnetic iron oxide nanoparticles (SPIONs) enable cells to be tracked using magnetic resonance imaging (MRI), but to obtain detectable signal cells need to be labelled with a sufficient amount of iron oxide. For the majority of SPIONs, this can only be obtained with the use of transfection agents, which can adversely affect cell health. Here, we have synthesised a library of dextran-based polymer coated SPIONs with varying surface charge from -1.5 mV to +18.2 mV via a co-precipitation approach and investigated their ability to be directly internalised by stem cells without the need for transfection agents. The SPIONs were colloidally stable in physiological solutions. The crystalline phase of the particles was confirmed with powder X-ray diffraction and their magnetic properties were characterised using SQUID magnetometry and magnetic resonance. Increased surface charge led to six-fold increase in uptake of particles into stem cells and higher MRI contrast, with negligible change in cell viability. Cell tracking velocimetry was shown to be a more accurate method for predicting MRI contrast of stem cells compared to measuring iron oxide uptake through conventional bulk iron quantification.
Collapse
Affiliation(s)
- Michael Barrow
- Department of Chemistry, University of Liverpool, Liverpool, UK.
| | | | | | | | | | | | | | | | | | | | | | | | | |
Collapse
|
19
|
In vivo delivery of siRNA to the brain by carbosilane dendrimer. J Control Release 2015; 200:60-70. [DOI: 10.1016/j.jconrel.2014.12.042] [Citation(s) in RCA: 79] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2014] [Revised: 12/14/2014] [Accepted: 12/30/2014] [Indexed: 12/18/2022]
|
20
|
Srivastava A, Cunningham C, Pandit A, Wall JG. Improved gene transfection efficacy and cytocompatibility of multifunctional polyamidoamine-cross-linked hyaluronan particles. Macromol Biosci 2015; 15:682-90. [PMID: 25641575 DOI: 10.1002/mabi.201400401] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2014] [Revised: 11/19/2014] [Indexed: 01/31/2023]
Abstract
We describe a multi-functional, cationic hyaluronic acid (HA)-based gene carrier with improved transfection over non-cross-linked HA, and negligible cytotoxicity. Cationized particles are developed by cross-linking HA chain carboxyl groups with polyamidoamine amine termini to produce well segregated particles of 350-400 nm with a surface charge density of +2 mV, compared with -35 mV for non-cationized particles. A tethered antibody fragment retains ligand binding for cell targeting. Cationized and antibody-linked particles complex plasmid DNA efficiently and the cationized particles successfully deliver reporter genes to bovine intervertebral disk cells as an intervertebral disk regeneration model.
Collapse
Affiliation(s)
- Akshay Srivastava
- Network of Excellence for Functional Biomaterials, Biosciences, NUI Galway, Galway, Ireland
| | - Claire Cunningham
- Microbiology and Network of Excellence for Functional Biomaterials, NUI Galway, University Road, Galway, Ireland
| | - Abhay Pandit
- Network of Excellence for Functional Biomaterials, Biosciences, NUI Galway, Galway, Ireland
| | - J Gerard Wall
- Microbiology and Network of Excellence for Functional Biomaterials, NUI Galway, University Road, Galway, Ireland.
| |
Collapse
|
21
|
Kyoung M, Russell SJ, Kohnhorst CL, Esemoto NN, An S. Dynamic architecture of the purinosome involved in human de novo purine biosynthesis. Biochemistry 2015; 54:870-80. [PMID: 25540829 DOI: 10.1021/bi501480d] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
Enzymes in human de novo purine biosynthesis have been demonstrated to form a reversible, transient multienzyme complex, the purinosome, upon purine starvation. However, characterization of purinosomes has been limited to HeLa cells and has heavily relied on qualitative examination of their subcellular localization and reversibility under wide-field fluorescence microscopy. Quantitative approaches, which are particularly compatible with human disease-relevant cell lines, are necessary to explicitly understand the purinosome in live cells. In this work, human breast carcinoma Hs578T cells have been utilized to demonstrate the preferential utilization of the purinosome under purine-depleted conditions. In addition, we have employed a confocal microscopy-based biophysical technique, fluorescence recovery after photobleaching, to characterize kinetic properties of the purinosome in live Hs578T cells. Quantitative characterization of the diffusion coefficients of all de novo purine biosynthetic enzymes reveals the significant reduction of their mobile kinetics upon purinosome formation, the dynamic partitioning of each enzyme into the purinosome, and the existence of three intermediate species in purinosome assembly under purine starvation. We also demonstrate that the diffusion coefficient of the purine salvage enzyme, hypoxanthine phosphoribosyltransferase 1, is not sensitive to purine starvation, indicating exclusion of the salvage pathway from the purinosome. Furthermore, our biophysical characterization of nonmetabolic enzymes clarifies that purinosomes are spatiotemporally different cellular bodies from stress granules and cytoplasmic protein aggregates in both Hs578T and HeLa cells. Collectively, quantitative analyses of the purinosome in Hs578T cells led us to provide novel insights for the dynamic architecture of the purinosome assembly.
Collapse
Affiliation(s)
- Minjoung Kyoung
- Department of Chemistry and Biochemistry, University of Maryland Baltimore County , 1000 Hilltop Circle, Baltimore, Maryland 21250, United States
| | | | | | | | | |
Collapse
|
22
|
Hydroxyoctadecadienoic Acids Regulate Apoptosis in Human THP-1 Cells in a PPARγ-Dependent Manner. Lipids 2014; 49:1181-92. [DOI: 10.1007/s11745-014-3954-z] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2014] [Accepted: 09/11/2014] [Indexed: 12/13/2022]
|
23
|
Lindstrom ZK, Brewer SJ, Ferguson MA, Burnett SH, Jensen BD. Injection of Propidium Iodide into HeLa Cells Using a Silicon Nanoinjection Lance Array. J Nanotechnol Eng Med 2014. [DOI: 10.1115/1.4028603] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
Delivering foreign molecules into human cells is a wide and ongoing area of research. Gene therapy, or delivering nucleic acids into cells via nonviral or viral pathways, is an especially promising area for pharmaceutics. All gene therapy methods have their respective advantages and disadvantages, including limited delivery efficiency and low viability. We present an electromechanical method for delivering foreign molecules into human cells. Nanoinjection, or delivering molecules into cells using a solid lance, has proven to be highly efficient while maintaining high viability levels. This paper describes an array of solid silicon microlances that was tested to determine efficiency and viability when nanoinjecting tens of thousands of HeLa cells simultaneously. Propidium iodide (PI), a dye that fluoresces when bound to nucleic acids and does not fluoresce when unbound, was delivered into cells using the lance array. Results show that the lance array delivers PI into up to 78% of a nanoinjected HeLa cell culture, while maintaining 78–91% viability. With these results, we submit the nanoinjection method using a silicon lance array as another promising particle delivery method for mammalian culture cells.
Collapse
Affiliation(s)
| | - Steven J. Brewer
- Department of Mechanical Engineering, Brigham Young University, Provo, UT 84602
| | - Melanie A. Ferguson
- Department of Mechanical Engineering, Brigham Young University, Provo, UT 84602
| | - Sandra H. Burnett
- Department of Microbiology and Molecular Biology, Brigham Young University, Provo, UT 84602
| | - Brian D. Jensen
- Department of Mechanical Engineering, Brigham Young University, Provo, UT 84602 e-mail:
| |
Collapse
|
24
|
Antczak C, Mahida JP, Singh C, Calder PA, Djaballah H. A high content assay to assess cellular fitness. Comb Chem High Throughput Screen 2014; 17:12-24. [PMID: 23957721 DOI: 10.2174/13862073113169990056] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2013] [Revised: 08/14/2013] [Accepted: 08/15/2013] [Indexed: 12/12/2022]
Abstract
A universal process in experimental biology is the use of engineered cells; more often, stably or transiently transfected cells are generated for the purpose. Therefore, it is important that cell health assessment is conducted to check for stress mediated by induction of heat shock proteins (Hsps). For this purpose, we have developed an integrated platform that would enable a direct assessment of transfection efficiency (TE) combined with cellular toxicity and stress response. We make use of automated microscopy and high content analysis to extract from the same well a multiplexed readout to assess and determine optimal chemical transfection conditions. As a proof of concept, we investigated seven commercial reagents, in a matrix of dose and time, to study transfection of an EGFP DNA plasmid into HeLa cells and their consequences on health and fitness; where we scored for cellular proliferation, EGFP positive cells, and induction of Hsp10 and Hsp70 as makers of stress responses. FuGENE HD emerged as the most optimal reagent with no apparent side effects suitable for performing microtiter based miniaturized transfection for both chemical and RNAi screening. In summary, we report on a high content assay method to assess cellular overall fitness upon chemical transfection.
Collapse
Affiliation(s)
| | | | | | | | - Hakim Djaballah
- HTS Core Facility, Memorial Sloan-Kettering Cancer Center, 1275 York Avenue, New York, NY 10065, USA.
| |
Collapse
|
25
|
Li X, Kong M, Dong A, Qian J, Jiang D. Polymer-based delivering of shRNA to rabbit aortic smooth muscle cells suppressed the expression of IGF-1R in vitro and in vivo. Acta Biochim Biophys Sin (Shanghai) 2014; 46:141-8. [PMID: 24374775 DOI: 10.1093/abbs/gmt139] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Restenosis is one of clinical limitations for vein graft in coronary bypass graft. It has been proved that signal pathway IGF-1 and its receptor (IGF-1R) activated by hemodynamic mechanical stretch are responsible for the vascular smooth muscle cells proliferation in vein graft neointima formation. Unfortunately, there is no routinely successful method to resolve this problem. Gene delivering to vein graft possesses great therapeutic potential to prevent neointima formation. Polymer is one kind of nanoparticles, which can activate the process of endocytosis of cells. In this study, we evaluated the transfection efficiency and therapeutic potential of polymer-based transfection of plasmids expressing GFP and shRNAs targeting IGF-1R (pGFPshIGF-1Rs) to smooth muscle cells and rabbit external jugular vein graft. Results showed that polymer-based transfection provided high efficiency of transgene expression in smooth muscle cells in vitro. In vitro, IGF-1R-specific shRNA transfected by polymer inhibited IGF-1R protein expression by 52 ± 3.6%, when compared with mock transfected cells. In vivo delivering efficiency of pGFPshIGF-1R plasmid into the rabbit external jugular vein graft was significantly high in the polymer-based transfection group, when compared with negative control group. In vivo, polymer-based transfection IGF-1R-specific shRNA efficiently inhibited the expression of IGF-1R protein by 77 ± 3.6%, 65.6 ± 4.9%, and 76.7 ± 4.3% at 24, 48, and 72 h, respectively, when compared with negative control group. Our findings indicated that polymer-based transfection may be a promising technique that allows the targeting of gene therapy for vein graft restenosis.
Collapse
Affiliation(s)
- Xuebiao Li
- Department of Cardiothoracic Surgery, Second Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou 310009, China
| | | | | | | | | |
Collapse
|
26
|
Godinho BM, McCarthy DJ, Torres-Fuentes C, Beltrán CJ, McCarthy J, Quinlan A, Ogier JR, Darcy R, O'Driscoll CM, Cryan JF. Differential nanotoxicological and neuroinflammatory liabilities of non-viral vectors for RNA interference in the central nervous system. Biomaterials 2014; 35:489-99. [DOI: 10.1016/j.biomaterials.2013.09.068] [Citation(s) in RCA: 32] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2013] [Accepted: 09/20/2013] [Indexed: 12/20/2022]
|
27
|
Systemic siRNA Delivery via Peptide-Tagged Polymeric Nanoparticles, Targeting PLK1 Gene in a Mouse Xenograft Model of Colorectal Cancer. Int J Biomater 2013; 2013:252531. [PMID: 24159333 PMCID: PMC3789392 DOI: 10.1155/2013/252531] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2013] [Accepted: 08/07/2013] [Indexed: 12/12/2022] Open
Abstract
Polymeric nanoparticles were developed from a series of chemical reactions using chitosan, polyethylene glycol, and a cell-targeting peptide (CP15). The nanoparticles were complexed with PLK1-siRNA. The optimal siRNA loading was achieved at an N : P ratio of 129.2 yielding a nanoparticle size of >200 nm. These nanoparticles were delivered intraperitoneally and tested for efficient delivery, cytotoxicity, and biodistribution in a mouse xenograft model of colorectal cancer. Both unmodified and modified chitosan nanoparticles showed enhanced accumulation at the tumor site. However, the modified chitosan nanoparticles showed considerably, less distribution in other organs. The relative gene expression as evaluated showed efficient delivery of PLK1-siRNA (0.5 mg/kg) with 50.7 ± 19.5% knockdown (P = 0.031) of PLK1 gene. The in vivo data reveals no systemic toxicity in the animals, when tested for systemic inflammation and liver toxicity. These results indicate a potential of using peptide-tagged nanoparticles for systemic delivery of siRNA at the targeted tumor site.
Collapse
|
28
|
Chouinard-Pelletier G, Leduc M, Guay D, Coulombe S, Leask RL, Jones EAV. Use of inert gas jets to measure the forces required for mechanical gene transfection. Biomed Eng Online 2012; 11:67. [PMID: 22963645 PMCID: PMC3502573 DOI: 10.1186/1475-925x-11-67] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2012] [Accepted: 09/03/2012] [Indexed: 11/26/2022] Open
Abstract
Background Transferring genes and drugs into cells is central to how we now study, identify and treat diseases. Several non-viral gene therapy methods that rely on the mechanical disruption of the plasma membrane have been proposed, but the success of these methods has been limited due to a lack of understanding of the mechanical parameters that lead to cell membrane permeability. Methods We use a simple jet of inert gas to induce local transfection of plasmid DNA both in vitro (HeLa cells) and in vivo (chicken chorioallantoic membrane). Five different capillary tube inner diameters and three different gases were used to treat the cells to understand the dependency of transfection efficiency on the dynamic parameters. Results The simple setup has the advantage of allowing us to calculate the forces acting on cells during transfection. We found permeabilization efficiency was related to the dynamic pressure of the jet. The range of dynamic pressures that led to transfection in HeLa cells was small (200 ± 20 Pa) above which cell stripping occurred. We determined that the temporary pores allow the passage of dextran up to 40 kDa and reclose in less than 5 seconds after treatment. The optimized parameters were also successfully tested in vivo using the chorioallantoic membrane of the chick embryo. Conclusions The results show that the number of cells transfected with the plasmid scales with the dynamic pressure of the jet. Our results show that mechanical methods have a very small window in which cells are permeabilized without injury (200 to 290 Pa). This simple apparatus helps define the forces needed for physical cell transfection methods.
Collapse
|
29
|
How to screen non-viral gene delivery systems in vitro? J Control Release 2011; 154:218-32. [PMID: 21600249 DOI: 10.1016/j.jconrel.2011.05.001] [Citation(s) in RCA: 93] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2010] [Revised: 03/31/2011] [Accepted: 05/01/2011] [Indexed: 11/21/2022]
Abstract
Screening of new gene delivery candidates regarding transfection efficiency and toxicity is usually performed by reading out transgene expression levels relative to a reference formulation after in vitro transfection. However, over the years and among different laboratories, this screening has been performed in a variety of cell lines, using a variety of conditions and read-out systems, and by comparison to a variety of reference formulations. This makes a direct comparison of results difficult, if not impossible. Reaching a consensus would enable placing new results into context of previous findings and estimate the overall contribution to the improvement of non-viral gene delivery. In this paper we illustrate the sensitivity of transfection outcomes on testing conditions chosen, and propose a screening protocol with the aim of standardization within the field.
Collapse
|
30
|
Kim GY, Moon JM, Han JH, Kim KH, Rhim H. The sCMV IE enhancer/promoter system for high-level expression and efficient functional studies of target genes in mammalian cells and zebrafish. Biotechnol Lett 2011; 33:1319-26. [PMID: 21424167 DOI: 10.1007/s10529-011-0589-5] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2011] [Accepted: 03/04/2011] [Indexed: 01/09/2023]
Abstract
Human and simian cytomegalovirus immediate-early (IE) enhancer/promoter (hCMVp and sCMVp) are the most widely used system for high-level gene expression; however, studies on detailed comparative analyses of the promoters are scarce. Using GFP reporter gene and immunoblotting assays, we have shown that the transcriptional activity of sCMVp was two to four fold higher than those of hCMVp in human-, monkey-, mouse-originated cell lines, and zebrafish as a vertebrate animal model. Notably, HtrA1 driven by the sCMVp induced cell death at relatively high-levels in HEK293 cells, but HtrA1 driven by the hCMVp had almost no effect on cell death, as shown by more than 4-fold increase in the expression levels of HtrA1. Our data may provide a valuable tool for functional studies of target genes that are expressed at extreme low level under standard transfection conditions and for development of new gene therapeutic systems.
Collapse
Affiliation(s)
- Goo-Young Kim
- Department of Biomedical Sciences, The Catholic University of Korea, Seoul, Korea
| | | | | | | | | |
Collapse
|
31
|
Marucci G, Lammi C, Buccioni M, Dal Ben D, Lambertucci C, Amantini C, Santoni G, Kandhavelu M, Abbracchio MP, Lecca D, Volpini R, Cristalli G. Comparison and optimization of transient transfection methods at human astrocytoma cell line 1321N1. Anal Biochem 2011; 414:300-2. [PMID: 21354096 DOI: 10.1016/j.ab.2011.02.028] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2011] [Accepted: 02/18/2011] [Indexed: 10/18/2022]
Abstract
Gene delivery to eukaryotic cells is the technique to study the regulation of gene expression. Human astrocytoma cell line 1321N1 could be useful to study G-protein-coupled receptors (GPCRs). Different transient transfection methods, namely calcium phosphate, Lipofectamine, FuGENE, Arrest-In, and microporation (Microporator), were investigated. Results were analyzed by fluorescence-activated cell sorting and fluorescence microscope using green fluorescent protein (GFP) as a reporter gene. To verify the transfection efficiency of these techniques, the expression of human GPR17 gene (hgpr17) was analyzed by transcription quantitative polymerase chain reaction. Microporation resulted in the best method to promote enriched hgpr17 delivery into the human astrocytoma cell line.
Collapse
Affiliation(s)
- Gabriella Marucci
- Medicinal Chemistry Unit, School of Pharmacy, University of Camerino, Camerino, Italy
| | | | | | | | | | | | | | | | | | | | | | | |
Collapse
|
32
|
Dickens S, Van den Berge S, Hendrickx B, Verdonck K, Luttun A, Vranckx JJ. Nonviral Transfection Strategies for Keratinocytes, Fibroblasts, and Endothelial Progenitor Cells for Ex Vivo Gene Transfer to Skin Wounds. Tissue Eng Part C Methods 2010; 16:1601-8. [DOI: 10.1089/ten.tec.2009.0648] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Affiliation(s)
- Stijn Dickens
- Laboratory of Plastic Surgery and Tissue Engineering Research, Department of Plastic and Reconstructive Surgery—Biomedical Science Group, KUL Leuven University Hospitals, Leuven, Belgium
| | - Stefaan Van den Berge
- Laboratory of Plastic Surgery and Tissue Engineering Research, Department of Plastic and Reconstructive Surgery—Biomedical Science Group, KUL Leuven University Hospitals, Leuven, Belgium
| | - Benoit Hendrickx
- Laboratory of Plastic Surgery and Tissue Engineering Research, Department of Plastic and Reconstructive Surgery—Biomedical Science Group, KUL Leuven University Hospitals, Leuven, Belgium
| | - Kristoff Verdonck
- Laboratory of Plastic Surgery and Tissue Engineering Research, Department of Plastic and Reconstructive Surgery—Biomedical Science Group, KUL Leuven University Hospitals, Leuven, Belgium
| | - Aernout Luttun
- Department of Molecular and Cellular Medicine—Biomedical Science Group, Centre for Molecular and Vascular Biology, Katholieke Universiteit Leuven, Leuven, Belgium
| | - Jan J. Vranckx
- Laboratory of Plastic Surgery and Tissue Engineering Research, Department of Plastic and Reconstructive Surgery—Biomedical Science Group, KUL Leuven University Hospitals, Leuven, Belgium
| |
Collapse
|
33
|
Intracellular FRET analysis of lipid/DNA complexes using flow cytometry and fluorescence imaging techniques. J Control Release 2010; 145:289-96. [DOI: 10.1016/j.jconrel.2010.04.016] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2009] [Revised: 04/14/2010] [Accepted: 04/16/2010] [Indexed: 01/17/2023]
|
34
|
Viñas-Castells R, Holladay C, di Luca A, Díaz VM, Pandit A. Snail1 down-regulation using small interfering RNA complexes delivered through collagen scaffolds. Bioconjug Chem 2010; 20:2262-9. [PMID: 19916547 DOI: 10.1021/bc900241w] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Control of gene expression via small interfering RNA has enormous potential for the treatment of a variety of diseases, including cancer and Huntington's disease. However, before any therapies can be developed, effective techniques for controlled delivery of these molecules must be devised. In this proof-of-concept study, small interfering RNA was complexed with a polymer and loaded into a biomaterial scaffold. The scaffold was introduced primarily to control the release of the complexes, and the polymer was introduced to improve the transfection efficiency. An optimal dose and complexation ratio were selected, at which more than 50% down-regulation of the target gene Snail1 was observed in two-dimensional culture. Delayed release of the complexes was observed, and significant sustained down-regulation of Snail1 was seen in a three-dimensional scaffold system after 7 days. Thus, the use of the scaffold altered the transfection profile significantly, demonstrating the feasibility of a collagen scaffold as a controlled release system for delivery of small interfering RNA-dendrimer complexes.
Collapse
Affiliation(s)
- Rosa Viñas-Castells
- Network of Excellence for Functional Biomaterials, National University of Ireland, Galway, Ireland
| | | | | | | | | |
Collapse
|
35
|
Zizzi A, Minardi D, Ciavattini A, Giantomassi F, Montironi R, Muzzonigro G, Di Primio R, Lucarini G. Green fluorescent protein as indicator of nonviral transient transfection efficiency in endometrial and testicular biopsies. Microsc Res Tech 2010; 73:229-33. [PMID: 19784977 DOI: 10.1002/jemt.20779] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
In the last years, physical and chemical methods of plasmid delivery have revolutionized the efficiency of nonviral gene transfer, and the success of gene therapy is largely dependent upon the development of gene-delivery methods. The nonviral techniques that lead to a direct transfer of DNA into tissue fragments, like electroporation (EP) and lipofection delivery systems are still insufficiently investigated. Our aim was to test the efficiency of EP and lipofection protocols in endometrial and testicular tissue fragments, using a naked plasmid DNA encoding green fluorescent protein (GFP). Because the transfection efficiency depends upon several factors, we tried to optimize the transfection conditions by testing different lipofectamine 2000 and plasmid ratios, electrical parameters, and culture after transfection. Our results show that these two nonviral methods of gene delivery are feasible and efficient in gene transfection of endometrial and testicular tissue biopsies. We found that the most performing ratio of plasmid:lipofectamine was 10:50 for transient lipofection, whereas two pulses for 10 s at 960 microF of capacitance, 200 V of voltage were the most favorable electrical parameters for EP efficiency in the presence of 5 microL of phMGFP plasmid. After lipofection and EP, the highest GFP intensity was observed respectively after 48 and 72 h of tissue fragment culturing. In conclusion, nonviral methods are attractive for an improvement of the gene therapy and our protocol could provide useful indications for in vivo gene therapy applications.
Collapse
Affiliation(s)
- Antonio Zizzi
- Department of Molecular Pathology and Innovative Therapies-Histology, Marche Polytechnic University, Ancona, Italy
| | | | | | | | | | | | | | | |
Collapse
|
36
|
Hartmann L, Börner HG. Precision polymers: monodisperse, monomer-sequence-defined segments to target future demands of polymers in medicine. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2009; 21:3425-3431. [PMID: 20882508 DOI: 10.1002/adma.200801884] [Citation(s) in RCA: 121] [Impact Index Per Article: 8.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/29/2023]
|
37
|
A matrix reservoir for improved control of non-viral gene delivery. J Control Release 2009; 136:220-5. [PMID: 19233237 DOI: 10.1016/j.jconrel.2009.02.006] [Citation(s) in RCA: 57] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2008] [Revised: 01/08/2009] [Accepted: 02/10/2009] [Indexed: 11/27/2022]
Abstract
Non-viral gene delivery suffers from a number of limitations including short transgene expression times and low transfection efficiency. Collagen scaffolds have previously been investigated as in vitro DNA reservoirs, which allow sustained release of genetic information. Efficient viral gene-transfer from these scaffolds has previously been demonstrated. However, due to concerns about the safety of viral gene therapy, the use of non-viral vectors may be preferable. In this study a DNA-dendrimer complex embedded in a cross-linked collagen scaffold was investigated as a reservoir for non-viral delivery. Elution from the scaffolds and transfection of seeded rat mesenchymal stem cells were used to evaluate the scaffold's ability to act as a reservoir for the complexes. Elution from the scaffolds was minimal after 2 days with a total of 25% of the complexes released after 7 days. Extended transgene expression after DNA-dendrimer complex delivery from the scaffolds in comparison to direct delivery to cells was observed. The elongated transfection period and relatively high levels of reporter gene expression are significant advantages over other non-viral gene therapy techniques. This platform has the potential to be an effective method of scaffold-mediated gene delivery suitable for in vitro and in vivo applications.
Collapse
|
38
|
Krajcik R, Jung A, Hirsch A, Neuhuber W, Zolk O. Functionalization of carbon nanotubes enables non-covalent binding and intracellular delivery of small interfering RNA for efficient knock-down of genes. Biochem Biophys Res Commun 2008; 369:595-602. [DOI: 10.1016/j.bbrc.2008.02.072] [Citation(s) in RCA: 109] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2008] [Accepted: 02/13/2008] [Indexed: 11/26/2022]
|
39
|
Lu J, Nozumi M, Fujii H, Igarashi M. A novel method for RNA interference in neurons using enhanced green fluorescent protein (EGFP)-transgenic rats. Neurosci Res 2008; 61:219-24. [PMID: 18423674 DOI: 10.1016/j.neures.2008.02.008] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2008] [Revised: 02/25/2008] [Accepted: 02/25/2008] [Indexed: 10/22/2022]
Abstract
RNA interference (RNAi) is the simplest way of examining gene function by inhibiting expression. However, due to the low rate of introducing short interfering RNA (siRNA) into neurons, it is difficult to discriminate into which neurons that have been successfully introduced. Here, we used neurons from transgenic rats expressing enhanced green fluorescent protein (EGFP), and we simultaneously applied small interfering RNAs (siRNAs) against EGFP and a targeted gene to the EGFP-expressing neurons. EGFP fluorescence and immunoreactivity of the protein were then assessed by immunofluorescence microscopy. Quantitative analysis of the immunofluorescence confirmed that loss of EGFP closely correlates with loss of the target protein. These results indicate that this method can be used in a wider range of the neuroscientific research, especially in genome-wide studies.
Collapse
Affiliation(s)
- Jia Lu
- Division of Molecular and Cellular Biology, Graduate School of Medical and Dental Sciences, Niigata University, Asahi-machi, Chuo-ku, Niigata 951-8510, Japan
| | | | | | | |
Collapse
|
40
|
Brito L, Little S, Langer R, Amiji M. Poly(β-amino ester) and Cationic Phospholipid-Based Lipopolyplexes for Gene Delivery and Transfection in Human Aortic Endothelial and Smooth Muscle Cells. Biomacromolecules 2008; 9:1179-87. [DOI: 10.1021/bm7011373] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Affiliation(s)
- Luis Brito
- Department of Pharmaceutical Sciences, Northeastern University, Boston, Massachusetts 02115, Department of Chemical Engineering, University of Pittsburgh, Pittsburgh, Pennsylvania 15261, and Department of Chemical Engineering, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139
| | - Steven Little
- Department of Pharmaceutical Sciences, Northeastern University, Boston, Massachusetts 02115, Department of Chemical Engineering, University of Pittsburgh, Pittsburgh, Pennsylvania 15261, and Department of Chemical Engineering, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139
| | - Robert Langer
- Department of Pharmaceutical Sciences, Northeastern University, Boston, Massachusetts 02115, Department of Chemical Engineering, University of Pittsburgh, Pittsburgh, Pennsylvania 15261, and Department of Chemical Engineering, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139
| | - Mansoor Amiji
- Department of Pharmaceutical Sciences, Northeastern University, Boston, Massachusetts 02115, Department of Chemical Engineering, University of Pittsburgh, Pittsburgh, Pennsylvania 15261, and Department of Chemical Engineering, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139
| |
Collapse
|
41
|
Maitani Y, Igarashi S, Sato M, Hattori Y. Cationic liposome (DC-Chol/DOPE=1:2) and a modified ethanol injection method to prepare liposomes, increased gene expression. Int J Pharm 2007; 342:33-9. [PMID: 17566677 DOI: 10.1016/j.ijpharm.2007.04.035] [Citation(s) in RCA: 74] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2006] [Revised: 02/21/2007] [Accepted: 04/24/2007] [Indexed: 10/23/2022]
Abstract
Cationic liposomes composed of 3beta-[N-(N',N'-dimethylaminoethane)-carbamoyl] cholesterol (DC-Chol) and dioleoylphosphatidylethanolamine (DOPE) (DC-Chol/DOPE liposome, molar ratio, 1:1 or 3:2) prepared by the dry-film method have been often used as non-viral gene delivery vectors. The formulation and preparation of DC-Chol/DOPE liposomes, as well as the formation of their lipoplexes were investigated in an attempt to improve transfection efficiency in vitro. A more efficient transfection in medium with serum was achieved using DC-Chol/DOPE liposomes (molar ratio, 1:2) than those (3:2), and preparation method by a modified ethanol injection than the dry-film. The most efficient DC-Chol/DOPE liposome for gene transfer was molar ratio (1:2) and prepared by a modified ethanol injection method. The enhanced transfection might be related to an increase in the release of DNA in the cytoplasm by the large lipoplex during incubation in optiMEM, not to an increased cellular association with the lipoplex. The use of a modified ethanol injection method might enhance the role of DOPE that is aid in destabilization of the plasma membrane and/or endosome. These findings suggested that cationic liposomes rich in DOPE prepared by a modified ethanol injection method will help to improve the efficacy of liposome vector systems for gene delivery.
Collapse
Affiliation(s)
- Yoshie Maitani
- Institute of Medicinal Chemistry, Hoshi University, Ebara 2-4-41, Tokyo 142-8501, Japan.
| | | | | | | |
Collapse
|
42
|
Mason AJ, Leborgne C, Moulay G, Martinez A, Danos O, Bechinger B, Kichler A. Optimising histidine rich peptides for efficient DNA delivery in the presence of serum. J Control Release 2007; 118:95-104. [PMID: 17254661 DOI: 10.1016/j.jconrel.2006.12.004] [Citation(s) in RCA: 41] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2006] [Revised: 11/28/2006] [Accepted: 12/05/2006] [Indexed: 10/23/2022]
Abstract
We recently showed that the antibacterial histidine rich amphipathic peptide LAH4 has significant DNA transfection capabilities in the absence of serum. To further understand the transfection process and to develop the peptides for future applications, we have combined a range of biochemical and biophysical techniques, including fluorescence assisted cell sorting and (2)H solid-state NMR, to characterise the initial binding of the peptide/DNA complexes to the cell surface and the subsequent release of the complexes from the endosome in the presence of serum. Our results show that both primary and secondary peptide structure play important roles in both of these processes. Specifically, we show that an ideal helix length and positioning of the histidine residues should be maintained to obtain optimal resistance to serum effects and release of DNA from the endosome. Inclusion of d-amino acids at the peptide termini does not reduce serum effects however further enrichment of the peptides with histidine residues can enhance transfection efficiency in the presence of serum. The detailed understanding of these two key stages in the transfection process shows that LAH4-L1 and its derivatives are likely to be highly efficient and robust vectors for a range of applications.
Collapse
Affiliation(s)
- A James Mason
- Faculté de chimie, Université Louis Pasteur/CNRS LC3-UMR7177, Institut le Bel, 4 rue Blaise Pascal, F-67070 Strasbourg, France.
| | | | | | | | | | | | | |
Collapse
|
43
|
Tönges L, Lingor P, Egle R, Dietz GPH, Fahr A, Bähr M. Stearylated octaarginine and artificial virus-like particles for transfection of siRNA into primary rat neurons. RNA (NEW YORK, N.Y.) 2006; 12:1431-8. [PMID: 16699166 PMCID: PMC1484438 DOI: 10.1261/rna.2252206] [Citation(s) in RCA: 74] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/09/2023]
Abstract
RNA interference (RNAi) provides a powerful experimental tool for sequence-specific gene silencing, allowing efficient analysis of gene function in a multitude of cell types. However, application of RNAi in primary mammalian neurons has been limited by low-transfection efficiency and considerable toxicity of conventional transfection methods. In this study, we evaluated a peptide-mediated and a polymer/lipid-based cellular delivery method for siRNA into rat primary neurons and compared the results with a commonly used liposomal transfection reagent. Stearylated octaarginine (Stearyl-R8) was used as polypeptide and artificial virus-like particles (AVPs) were used as a combined liposomal-polymeric vector, since both reagents have been previously shown to successfully transfect DNA into cell lines. Stearyl-R8 and AVPs both promoted siRNA transfection into primary hippocampal neurons via the endosomal pathway. SiRNA-mediated gene silencing could be effectively induced in primary neuron cultures. In comparison with the commonly used cationic liposome transfection agent, both novel reagents were less detrimental to cell metabolic activity. We conclude that these novel transfection methods yield performances comparable to cationic liposome-mediated transfection for siRNA, while being less cytotoxic in primary neurons. Stearyl-R8 and AVPs may therefore represent novel and more cost-efficient alternatives to conventional siRNA-transfection reagents.
Collapse
Affiliation(s)
- Lars Tönges
- Department of Neurology, Georg-August-University Göttingen, Faculty of Medicine, Waldweg, Göttingen, Germany
| | | | | | | | | | | |
Collapse
|
44
|
Saito F, Yokota H, Sudo Y, Yakabe Y, Takeyama H, Matsunaga T. Application of RNAi inducible TNFRI knockdown cells to the analysis of TNFalpha-induced cytotoxicity. Toxicol In Vitro 2006; 20:1343-53. [PMID: 16829018 DOI: 10.1016/j.tiv.2006.05.007] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2006] [Accepted: 05/16/2006] [Indexed: 01/07/2023]
Abstract
RNA interference (RNAi) has become a popular tool for downregulating in many species including mammalian cells. Therefore, suppression of target genes in mammalian cultured cells using RNAi may represent an ideal alternative to knockout studies for understanding the molecular mechanisms of chemical toxicity. Here, we assessed the potential of RNAi mediated gene knockdown in HeLa and HepG2 cells to cytotoxicity studies. Tumor necrosis factor receptor I (TNFRI) was chosen as a target gene because its signaling has been implicated in xenobiotic-induced toxicity. We optimized the design and performance of a vector-based RNAi experiment and then investigated viability of both HeLa and HepG2 cells exposed to TNFalpha. In addition, we examined gene expression profile of TNFRI knockdown HeLa cells after TNFalpha treatment, and then protein expression levels for several apoptosis-related genes of the cells. In both HeLa and HepG2 cells, TNFalpha exposure resulted in significantly reduced susceptibility of the knockdown cells to the cytotoxicity as compared with those of mock-transfected cells. Furthermore, the gene expression profiling and western blotting revealed that several genes including apoptosis and/or NF-kappaB pathway were downregulated in the knockdown HeLa cells. These results suggest that downregulation of the TNFRI gene in both HeLa and HepG2 cells by RNAi participates in resistance to TNFalpha-induced cytotoxicity. Therefore, this study raises the possibility that RNAi-based gene silencing in mammalian cells may be a valuable tool for elucidating the relationships between phenotypic changes and target gene functions in response to xenobiotic-induced cytotoxicity. Further exposure study using xenobiotics needs to be done to validate the potential utility of RNAi technology.
Collapse
Affiliation(s)
- Fumiyo Saito
- Chemicals Evaluation and Research Institute, Japan, 1600 Shimo-Takano, Sugito, Kitakatsushika, Saitama 345-0043, Japan.
| | | | | | | | | | | |
Collapse
|
45
|
Xia W, Mruk DD, Lee WM, Cheng CY. Differential interactions between transforming growth factor-beta3/TbetaR1, TAB1, and CD2AP disrupt blood-testis barrier and Sertoli-germ cell adhesion. J Biol Chem 2006; 281:16799-813. [PMID: 16617054 DOI: 10.1074/jbc.m601618200] [Citation(s) in RCA: 83] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
Abstract
The biochemical basis that regulates the timely and selective opening of the blood-testis barrier (BTB) to migrating preleptotene/leptotene spermatocytes at stage VIII of the epithelial cycle in adult rat testes is virtually unknown. Recent studies have shown that cytokines (e.g. transforming growth factor (TGF)-beta3) may play a crucial role in this event. However, much of this information relies on the use of toxicants (e.g. CdCl(2)), making it difficult to relay these findings to normal testicular physiology. Here we report that overexpression of TGF-beta3 in primary Sertoli cells cultured in vitro indeed perturbed the tight junction (TJ) barrier with a concomitant decline in the production of BTB constituent proteins as follows: occludin, N-cadherin, and ZO-1. Additionally, local administration of TGF-beta3 to testes in vivo was shown to reversibly perturb the BTB integrity and Sertoli-germ cell adhesion via the p38 MAPK and ERK signaling pathways. Most importantly, the simultaneous activation of p38 and ERK signaling pathways is dependent on the association of the TGF-beta3-TbetaR1 complex with adaptors TAB1 and CD2AP because if TbetaR1 was associated preferentially with CD2AP, only Sertoli-germ cell adhesion was perturbed without compromising the BTB. Collectively, these data illustrate that local production of TGF-beta3, and perhaps other TGF-betas and cytokines, by Sertoli and germ cells into the microenvironment at the BTB during spermatogenesis transiently perturbs the BTB and Sertoli-germ cell adhesion to facilitate germ cell migration when the activated TbetaRI interacts with adaptors TAB1 and CD2AP. However, TGF-beta3 selectively disrupts Sertoli-germ cell adhesion in the seminiferous epithelium to facilitate germ cell migration without compromising BTB when TbetaRI interacts only with adaptor CD2AP.
Collapse
Affiliation(s)
- Weiliang Xia
- Population Council, Center for Biomedical Research, 1230 York Avenue, New York, NY 10021, USA
| | | | | | | |
Collapse
|
46
|
Aoki M, Ishii T, Kanaoka M, Kimura T. RNA interference in immune cells by use of osmotic delivery of siRNA. Biochem Biophys Res Commun 2006; 341:326-33. [PMID: 16426577 DOI: 10.1016/j.bbrc.2005.12.191] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2005] [Accepted: 12/28/2005] [Indexed: 12/31/2022]
Abstract
Delivery of siRNA to immune cells has been one of the major obstacles to widespread application of RNAi in the immunology field. Here, we report that osmotic delivery of siRNA can be used to silence genes in macrophage RAW264.7 without incurring either cytotoxic or immunomodulatory activity. We also showed usefulness of the osmotic delivery in other types of cells including T cell DO11.10. By repeated osmotic delivery of siRNA, long-term gene silencing was readily achieved. When TLR4 was disrupted in RAW264.7 cells for 48 h and the cells were stimulated with the TLR4 ligand LPS, a significant decrease in TNFalpha production was observed. DNA microarray-based gene expression profile analysis showed that gene silencing by osmotic delivery of siRNA was target-specific and the delivery method itself had little influence on overall gene expression.
Collapse
Affiliation(s)
- Mikio Aoki
- Genomic Science Laboratories, Dainippon Sumitomo Pharma Co., Ltd., 3-1-98 Kasudade Naka, Konohana-ku, Osaka 554-0022, Japan
| | | | | | | |
Collapse
|
47
|
Huth US, Schubert R, Peschka-Süss R. Investigating the uptake and intracellular fate of pH-sensitive liposomes by flow cytometry and spectral bio-imaging. J Control Release 2006; 110:490-504. [DOI: 10.1016/j.jconrel.2005.10.018] [Citation(s) in RCA: 187] [Impact Index Per Article: 10.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2005] [Revised: 10/11/2005] [Accepted: 10/12/2005] [Indexed: 02/06/2023]
|
48
|
Kendall JM, Ismail R, Thomas N. Adenoviral Sensors for High‐Content Cellular Analysis. Methods Enzymol 2006; 414:247-66. [PMID: 17110196 DOI: 10.1016/s0076-6879(06)14014-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/12/2023]
Abstract
To maximize the potential of high-content cellular analysis for investigating complex cellular signaling pathways and processes, we have generated a library of adenoviral encoded cellular sensors based on protein translocation and reporter gene activation that enable a diverse set of assays to be applied to lead compound profiling in drug discovery and development. Adenoviral vector transduction is an efficient and technically simple system for expression of cellular sensors in diverse cell types, including primary cells. Adenoviral vector-mediated transient expression of cellular sensors, either as fluorescent protein fusions or live cell gene reporters, allows rapid assay development for profiling the activities of candidate drugs across multiple cellular systems selected for biological and physiological relevance to the target disease state.
Collapse
|
49
|
Large-scale production of lipoplexes with long shelf-life. Eur J Pharm Biopharm 2005; 59:35-43. [PMID: 15567299 DOI: 10.1016/j.ejpb.2004.06.001] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2004] [Accepted: 06/08/2004] [Indexed: 10/26/2022]
Abstract
The instability of lipoplex formulations is a major obstacle to overcome before their commercial application in gene therapy. In this study, a continuous mixing technique for the large-scale preparation of lipoplexes followed by lyophilisation for increased stability and shelf-life has been developed. Lipoplexes were analysed for transfection efficiency and cytotoxicity in human aorta smooth muscle cells (HASMC) and a rat smooth muscle cell line (A-10 SMC). Homogeneity of lipid/DNA-products was investigated by photon correlation spectroscopy (PCS) and cryotransmission electron microscopy (cryo-TEM). Studies have been undertaken with DAC-30, a composition of 3beta-[N-(N,N'-dimethylaminoethane)-carbamoyl]-cholesterol (DAC-Chol) and dioleylphosphatidylethanolamine (DOPE) and a green fluorescent protein (GFP) expressing marker plasmid. A continuous mixing technique was compared to the small-scale preparation of lipoplexes by pipetting. Individual steps of the continuous mixing process were evaluated in order to optimise the manufacturing technique: lipid/plasmid ratio, composition of transfection medium, pre-treatment of the lipid, size of the mixing device, mixing procedure and the influence of the lyophilisation process. It could be shown that the method developed for production of lipoplexes on a large scale under sterile conditions led to lipoplexes with good transfection efficiencies combined with low cytotoxicity, improved characteristics and long shelf-life.
Collapse
|
50
|
Iversen N, Birkenes B, Torsdalen K, Djurovic S. Electroporation by nucleofector is the best nonviral transfection technique in human endothelial and smooth muscle cells. GENETIC VACCINES AND THERAPY 2005; 3:2. [PMID: 15836781 PMCID: PMC1087498 DOI: 10.1186/1479-0556-3-2] [Citation(s) in RCA: 28] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/07/2004] [Accepted: 04/18/2005] [Indexed: 01/19/2023]
Abstract
Background The aim of this study was to determine the optimal non-viral transfection method for use in human smooth muscle cells (SMC) and endothelial cells (EC). Methods Coronary Artery (CoA) and Aortic (Ao) SMC and EC were transfected with a reporter plasmid, encoding chloramphenicol acetyltransferase type 1 (CAT), with seven different transfection reagents, two electroporation methods and a photochemical internalization (PCI) method. CAT determination provided information regarding transfection efficiency and total protein measurement was used to reflect the toxicity of each method. Results Electroporation via the nucleofector machine was the most effective method tested. It exhibited a 10 to 20 fold (for SMC and EC, respectively) increase in transfection efficiency in comparison to the lipofection method combined with acceptable toxicity. FuGene 6 and Lipofectamine PLUS were the preferred transfection reagents tested and resulted in 2 to 60 fold higher transfection efficiency in comparison to the PCI which was the least effective method. Conclusion This study indicates that electroporation via the nucleofector machine is the preferred non-viral method for in vitro transfection of both human aortic and coronary artery SMC and EC. It may be very useful in gene expression studies in the field of vascular biology. Through improved gene transfer, non-viral transfer techniques may also play an increasingly important role in delivering genes to SMC and EC in relevant disease states.
Collapse
Affiliation(s)
- Nina Iversen
- Department of Medical Genetics, Ullevål University Hospital, Oslo, Norway
| | - Baard Birkenes
- Department of Medical Genetics, Ullevål University Hospital, Oslo, Norway
| | - Kari Torsdalen
- Department of Medical Genetics, Ullevål University Hospital, Oslo, Norway
| | - Srdjan Djurovic
- Department of Medical Genetics, Ullevål University Hospital, Oslo, Norway
| |
Collapse
|