We have proposed engineering tissues by the incorporation and sustained release of plasmids encoding tissue-inductive proteins from polymer matrices. Matrices of poly(lactide-co-glycolide) (PLG) were loaded with plasmid, which was subsequently released over a period ranging from days to a month in vitro. Sustained delivery of plasmid DNA from matrices led to the transfection of large numbers of cells. Furthermore, in vivo delivery of a plasmid encoding platelet-derived growth factor enhanced matrix deposition and blood vessel formation in the developing tissue. This contrasts with direct injection of the plasmid, which did not significantly affect tissue formation. This method of DNA delivery may find utility in tissue engineering and gene therapy applications.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1038/9853 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Nano-delivery of a novel inhibitor of ERCC1-XPF for targeted sensitization of colorectal cancer to platinum-based chemotherapeutics.
Drug Deliv Transl Res
January 2025
Faculty of Pharmacy and Pharmaceutical Sciences, University of Alberta, Edmonton, AB, T6G 2E1, Canada.
In this study, a novel inhibitor of ERCC1/XPF heterodimerization, A4, was used as an inhibitor of repair for DNA damage by platinum-based chemotherapeutics. Nano-formulations of A4 were developed, using self-assembly of the following block copolymers: methoxy-poly(ethylene oxide)-block-poly(α-benzyl carboxylate-ε-caprolactone) (PEO-b-PBCL), methoxy-poly(ethylene oxide)-block-poly(ε-caprolactone) (PEO-b-PCL), or methoxy-poly(ethylene oxide)-block-poly (D, L, lactide) (PEO-b-PDLA 50-50). The nano-formulations were characterized for their average diameter, polydispersity, morphology, A4 encapsulation and in vitro release.
View Article and Find Full Text PDFBeyond small molecules: advancing MYC-targeted cancer therapies through protein engineering.
Transcription
January 2025
Department of Chemistry, University of Toronto, Mississauga, ON, Canada.
Protein engineering has emerged as a powerful approach toward the development of novel therapeutics targeting the MYC/MAX/E-box network, an active driver of >70% of cancers. The MYC/MAX heterodimer regulates numerous genes in our cells by binding the Enhancer box (E-box) DNA site and activating the transcription of downstream genes. Traditional small molecules that inhibit MYC face significant limitations that include toxic effects, drug delivery challenges, and resistance.
View Article and Find Full Text PDFSelf-assembly of Antisense DNA-Camptothecin Amphiphile into Glutathione-Responsive Nanoparticles for Combination Cancer Therapy.
Chemistry
January 2025
Indian Institute of Science Education and Research Thiruvananthapuram, Chemistry, Trivandrum, Trivandrum, Trivandrum, 695551, Trivandrum, INDIA.
Recent years have witnessed the rapid growth of combination therapy for the treatment of cancer. Chemo and antisense DNA therapies are two clinically proven and efficient treatment modalities for cancer. However, direct delivery of both chemo and antisense oligonucleotides into the cancerous cells is challenging and hence there is a high demand for the development of new strategies that permit the direct delivery of chemo and antisense therapeutic agents in a targeted fashion.
View Article and Find Full Text PDFAccelerating the momentum to achieve global elimination of hepatitis B infection: a scoping review of hepatitis B guidelines to reduce mother to child transmission.
EClinicalMedicine
February 2025
Department of Obstetrics and Gynecology, Queen Mary Hospital, the University of Hong Kong, Hong Kong SAR, China.
Progress towards achieving global elimination of hepatitis B virus (HBV) by 2030 remains unsatisfactory. Prevention of mother to child transmission is crucial but current Clinical Practice Guidelines (CPGs) gave diverse recommendations, creating confusion and leading to significant challenges in the practical implementation across various regions owing to global inequity. We reviewed 47 CPGs on the management of hepatitis B during pregnancy against twelve important clinical questions.
View Article and Find Full Text PDFModeling and correction of protein conformational disease in iPSC-derived neurons through personalized base editing.
Mol Ther Nucleic Acids
March 2025
NYU Cardiovascular Research Center, NYU Grossman School of Medicine, New York, NY 100016, USA.
Altered protein conformation can cause incurable neurodegenerative disorders. Mutations in , the gene encoding neuroserpin, can alter protein conformation resulting in cytotoxic aggregation leading to neuronal death. Familial encephalopathy with neuroserpin inclusion bodies (FENIB) is a rare autosomal dominant progressive myoclonic epilepsy that progresses to dementia and premature death.
View Article and Find Full Text PDFWant AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!