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Papers, explained in our own words

Every entry summarises what the study set out to test, what it found and why it changes how we design delivery systems. Browse research and reviews or search the collection.

721 articles

Showing 1–24 of 78 articles · Keyword: Polyethylenimine Clear keyword

Frontiers in Pharmacology2022ResearchNon-viral Gene Delivery

1. Synthesis and Characterization of Poly (β-amino Ester) and Applied PEGylated and Non-PEGylated Poly (β-amino ester)Plasmid DNA Nanoparticles for Efficient Gene Delivery

Sajid Iqbal, Alessandro Francisco Martins, Muhammad Sohail, Jingjing Zhao, Qi Deng, Muhan Li, Zhongxi Zhao

Polymeric gene delivery vectors require detailed physicochemical characterisation to ensure reproducible formulation and efficient transfection. PBAE-447 is a promising biodegradable cationic polymer, but its simple nanoparticles can degrade or aggregate in aqueous/physiological conditions. This study characterises…

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European Journal of Medicinal Chemistry2022ReviewNon-viral Gene Delivery

2. The nano delivery systems and applications of mRNA

Mingyuan Li, Yuan Li, Shiqin Li, Lin Jia, Haomeng Wang, Meng Li, Jie Deng, Ali Zhu, Liqiao Ma, Weihong Li, Peng Yu, And Tao Zhu

The COVID-19 pandemic has greatly accelerated the application of mRNA technology, demonstrating its unique advantages over traditional biopharmaceutical and vaccine technology. However, mRNA instability in human physiological environments and inefficient in vivo delivery remain major barriers. mRNA chemical…

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Biotechnology and Bioengineering (accepted manuscript)2021ResearchNon-viral Gene Delivery

3. Non-Viral Gene Delivery to T Cells with Lipofectamine LTX

Emily Harris, Devon Zimmerman, Eric Warga, Anil Bamezai, Jacob Elmer

Retroviral gene delivery for T cell therapies is expensive, semi-randomly integrating, and variable between patients. Non-viral alternatives are needed, but T cells are notoriously hard to transfect, especially primary T cells. Lipofectamine LTX was the best vehicle in Jurkat cells; optimised conditions in X-VIVO…

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International Journal of Polymeric Materials and Polymeric Biomaterials2021ResearchNon-viral Gene Delivery

4. Development of a nontoxic and efficient gene delivery vector based on histidine grafted chitosan

Liu T, Lin M, Wu F, Lin A, Luo D, Zhang Z

siRNA therapeutics are limited by poor cellular uptake, serum nuclease degradation, and inefficient endosomal/lysosomal escape. Chitosan is biocompatible and biodegradable but has low transfection efficiency, largely due to poor buffering capacity and weak endosomal escape. Histidine grafting was explored to add…

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Advanced Healthcare Materials2021ReviewNon-viral Gene Delivery

5. Next-Generation Vaccines: Nanoparticle-Mediated DNA and mRNA Delivery

Ho W, Gao M, Li F, Li Z, Zhang X-Q, Xu X.

Nucleic acid vaccines (DNA and mRNA) offer rapid design, adaptability to changing pathogen strains, and stimulation of both humoral and cellular immunity, but their clinical translation is limited by inefficient delivery—nucleic acids are rapidly degraded by endogenous nucleases, have poor cellular uptake due to…

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ACS Applied Materials & Interfaces2020ResearchNon-viral Gene Delivery

6. Cationic Nanoparticle-Mediated Activation of Natural Killer Cells for Effective Cancer Immunotherapy

Kwang-Soo Kim, Jun-Hyeok Han, Seung Hee Choi, Hae-Yun Jung, Joo Dong Park, Hee-Jung An, Seong-Eun Kim, Dong-Hyun Kim, Junsang Doh, Dong Keun Han, Ik-Hwan Kim, Wooram Park, Kyung-Soon Park

Natural killer (NK) cells are promising for cancer immunotherapy due to their lower risk of cytokine storm and graft-versus-host disease compared to T cell therapies. However, existing NK cell activation strategies—genetic engineering and cytokine treatment—are inefficient, expensive, and involve complex processing…

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Materials Science & Engineering C2020ResearchNon-viral Gene Delivery

7. Engineering a “PEG-g-PEI/DNA nanoparticle-in-PLGA microsphere” hybrid controlled release system to enhance immunogenicity of DNA vaccine

Yingxi Lu, Fapu Wu, Weihua Duan, Xueluer Mu, Sha Fang, Nana Lu, Xianfeng Zhou, Wei Kong

DNA vaccines require high doses because naked DNA is poorly delivered to antigen-presenting cells (APCs), and conventional PLGA microsphere encapsulation by W/O/W emulsion can damage DNA, lower supercoiled DNA content, and give low encapsulation efficiency. A controlled-release system is needed that protects DNA…

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International Journal of Nanomedicine2020ResearchNon-viral Gene Delivery

8. Self-Assembled Nanoparticles Prepared from Low-Molecular-Weight PEI and Low-Generation PAMAM for EGFRvIII-Chimeric Antigen Receptor Gene Loading and T-Cell Transient Modification

CAR-T cell therapy is limited by complex manufacturing, viral vector use, high cost, and severe toxicities. A nonviral, transient CAR modification approach using self-assembled nanoparticles could provide a simpler, safer, and potentially broadly applicable alternative for T-cell engineering. Formulation screening…

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ACS Biomaterials Science & Engineering (as indicated in the supplied file header; exact volume/pages and DOI were not in2020ResearchNon-viral Gene Delivery

9. Efficiency of Cytosolic Delivery with Poly(beta-amino ester) Nanoparticles is Dependent on the Effective pKa of the Polymer

Denis Routkevitch, Deepti Sudhakar, Marranne Conge, Mahita Varanasi, Stephany Y. Tzeng, David R. Wilson, Jordan J. Green

The mechanism by which cationic polymers with titratable amines mediate endosomal escape and cytosolic delivery of nucleic acids remains poorly understood. Buffering capacity alone has often failed to predict transfection efficacy, so the study examines whether the effective pKa of poly(beta-amino ester)s (PBAEs)…

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ACS Biomaterials Science & Engineering (as indicated in the file header; exact volume/pages and DOI were not included in2020ResearchNon-viral Gene Delivery

10. Efficiency of Cytosolic Delivery with Poly(beta-amino ester)

Denis Routkevitch, Deepti Sudhakar, Marranne Conge, Mahita Varanasi, Stephany Y. Tzeng, David R. Wilson, Jordan J. Green

The mechanism by which cationic polymers with titratable amines mediate endosomal escape and cytosolic delivery of nucleic acids remains poorly understood. Buffering capacity alone has often failed to predict transfection efficacy, so this study examines whether the effective pKa of poly(beta-amino ester)s (PBAEs)…

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International Immunopharmacology2020ReviewNon-viral Gene Delivery

11. Nanomedicine for improvement of dendritic cell-based cancer immunotherapy

Hashemi V, Farhadi S, Ghasemi Chaleshtari M, Et Al.

Dendritic cell (DC)-based cancer immunotherapy has shown impressive outcomes, including the first FDA-approved anti-cancer vaccine, but clinical application faces challenges such as limited durable responses, antigen selection issues, and immunosuppressive tumour microenvironments. Nanoparticles (NPs) are promising…

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International Journal of Nanomedicine2020ReviewNon-viral Gene Delivery

12. Biodegradable Polymers for Gene-Delivery Applications

Chen, C.-K.; Huang, P.-K.; Law, W.-C.; Chu, C.-H.; Chen, N.-T.; Lo, L.-W

Gene therapy is limited by the fragile nature of therapeutic DNA/RNA and by safety concerns with viral vectors. Non-viral polymeric vectors are attractive, but conventional cationic polymers such as PEI, PDMAEMA, and PLL are often non-degradable, causing accumulation, cytotoxicity, and poor gene unpacking. This…

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Molecular Pharmaceutics2019ResearchNon-viral Gene Delivery

13. Differentially Branched Ester Amine Quadpolymers with Amphiphilic and pH-Sensitive Properties for Efficient Plasmid DNA Delivery

Wilson, D. R., Rui, Y., Siddiq, K., Routkevitch, D., & Green, J. J. (2019).

Nonviral gene delivery remains limited by low transfection efficacy, especially under physiological serum conditions and at low nanoparticle doses. Although linear poly(β-amino ester)s (PBAEs) are effective, branching structure had not been systematically evaluated in well-defined PBAE-like poly(ester amine) systems…

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International Journal of Pharmaceutics (inferred; the supplied PDF is marked “2019ResearchNon-viral Gene Delivery

14. Hyaluronic acid-coated pH sensitive poly (β-amino Ester) nanoparticles for codelivery of embelin and TRAIL plasmid for triple negative breast cancer treatment

Yingqi Xu, Dingxin Liu, Jie Hu, Peirong Ding, Meiwan Chen

Triple-negative breast cancer (TNBC) lacks effective targeted therapy. Nonviral co-delivery of an anticancer drug and a therapeutic gene may improve treatment, but efficient tumour-targeted co-delivery remains challenging. TRAIL has shown limited clinical benefit alone, and embelin (EMB) can inhibit XIAP to promote…

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Biochimie2019ReviewDrug Delivery

15. Strategies in the Design of Endosomolytic Agents for Facilitating Endosomal Escape in Nanoparticles

Aqeel Ahmad, Javed Masood Khan, Shafiul Haque

Endosomal escape remains the rate-limiting step for efficient gene and drug delivery using nanoparticles (NPs). Despite continuous advancements, most NPs internalised via endocytic pathways are degraded by hydrolytic enzymes in lysosomes, severely limiting therapeutic efficacy. There is an unmet need to…

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Pharmaceutics (MDPI)2019ReviewNon-viral Gene Delivery

16. Synthetic Approaches for Nucleic Acid Delivery: Choosing the Right Carriers

Run Ni, Ruoyu Fang, And Ying Chau

While many reviews have systematically covered different types of formulation materials for gene delivery, a parallel comparison of different formulation materials together with an analysis of the correlation between their material properties and nucleic acid delivery functions has not been conducted. Understanding…

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Journal of Controlled Release2019ReviewNon-viral Gene Delivery

17. Poly(β-amino ester)-based gene delivery systems From discovery to therapeutic applications

Cordeiro, R. A.; Serra, A.; Coelho, J. F. J.; Faneca, H

Gene therapy requires safe and effective delivery vectors. PBAEs are biodegradable cationic polymers with excellent gene delivery properties, but a comprehensive and critical overview of their use as gene carriers is lacking. This review provides the first comprehensive and critical overview of PBAE-based gene…

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International Journal of Molecular Sciences2018ResearchNon-viral Gene Delivery

18. Non-Viral Transfection of Human T Lymphocytes

Simon A. B. Riedl, Alexander Raup, Patrick Kaiser, Christopher V. Synatschke, Valerie Jérôme, Ruth Freitag

Genetic modification of human T lymphocytes is critical for both basic research and emerging therapies (e.g., CAR-T cells), but established non-viral methods are highly inefficient. Linear polyethylenimine (l-PEI), the "gold standard" for non-viral transfection of mammalian cells, achieves only single-digit…

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Molecular Pharmaceutics (Just Accepted Manuscript)2018ResearchNon-viral Gene Delivery

19. Bioinspired Star-Shaped Poly(L-Lysine) Polypeptides for DNA Delivery to Mesenchymal Stem Cells

David P. Walsh, Robert D. Murphy, Angela Panarella, Rosanne M. Raftery, Brenton Cavanagh, Jeremy C. Simpson, Fergal J. O’brien, Andreas Heise, Sally-Ann Cryan

Tissue engineering needs efficient, biocompatible non-viral gene delivery to mesenchymal stem cells (MSCs), which are inherently refractory to transfection. Existing vectors have limitations: PEI is cytotoxic and linear poly(L-lysine) (L-PLL) has poor transfection efficiency. Transfection efficiency (pGFP, day 7)…

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PLOS ONE2017ResearchNon-viral Gene Delivery

20. Influence of nanoparticle-mediated transfection on proliferation of primary immune cells in vitro and in vivo

Susanne Przybylski, Michaela Gasch, Anne Marschner, Marcus Ebert, Alexander Ewe, Gisa Helmig, Nadja Hilger, Stephan Fricke, Susanne Rudzok, Achim Aigner, Jana Burkhardt

Nanoparticle-based gene delivery methods are promising for transfecting immune cells, but their impact on basic immune functions such as proliferation—a cornerstone of cellular immunity—has not been systematically investigated. Understanding whether transfection reagents non-specifically influence immune cell…

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Colloids and Surfaces B: Biointerfaces2017ResearchNon-viral Gene Delivery

21. Composite liposome-PEInucleic acid lipopolyplexes for safe and efficient gene delivery and gene knockdown

Pinnapireddy Sr, Duse L, Strehlow B, Schäfer J, Bakowsky U

Polyethylenimine (PEI)-based gene delivery is limited by cytotoxicity, rapid degradation, and low cellular uptake. A safer, more stable non-viral system was needed for both gene delivery and gene knockdown. Physicochemical properties: DDC liposomes ~198.7 nm, ζ = −30.9 mV; IPEI polyplexes ~166.2 nm, ζ = +19.1 mV…

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Journal of Controlled Release2017ResearchNon-viral Gene Delivery

22. Polymeric Nanoparticles as Cancer-Specific DNA Delivery Vectors to Human Hepatocellular Carcinoma

Camila G. Zamboni, Kristen L. Kozielski, Hannah J. Vaughan, Maisa M. Nakata, Jayoung Kim, Luke J. Higgins, Martin G. Pomper, Jordan J. Green

Hepatocellular carcinoma (HCC) has poor survival and standard therapies are limited by off-target toxicity to healthy hepatocytes and drug resistance. Gene therapy is promising, but non-viral vectors often suffer from poor intracellular delivery and lack of cancer specificity. A biodegradable polymeric nanoparticle…

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Journal of Biomedical Materials Research Part A2017ResearchNon-viral Gene Delivery

23. Continuous Microfluidic Assembly of Biodegradable Poly(beta-amino ester)DNA Nanoparticles for Enhanced Gene Delivery

Wilson, D. R., Et Al. (2017).

Clinical translation of biomaterial-based gene delivery nanoparticles is limited by efficacy, safety, batch-to-batch consistency, scalable manufacturing, and long-term storage stability. Continuous microfluidic fabrication may overcome manufacturing and scale-up challenges for biodegradable PBAE/DNA polyplexes. DNA…

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2017ReviewNon-viral Gene Delivery

24. Molecular nanoparticle-based gene delivery systems

Jiménez Blanco Jl, Benito Jm, Ortiz Mellet C, García Fernández Jm.

Nonviral gene delivery lacks molecularly well-defined carriers suitable for rigorous structure–activity relationship (SAR) studies. Viral vectors raise immunogenicity, cost, and cargo-size concerns, while polymers, dendrimers, and cationic lipids are often polydisperse or supramolecularly ill-defined. The review…

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