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Promising personalized approach to liver cancer therapy made possible by DNA-based neoantigen research designed at the Wistar Institute

A new clinical trial demonstrates a novel, personalized neoantigen vaccine therapy showed promising anti-tumor efficacy in patients with liver cancer who failed their original front-line treatment. The therapy induced potent induction of T cell immunity and regressed tumors in preclinical model studies.

SourceThe Wistar Institute·JournalNature Medicine·TypeRandomized controlled/clinical trial·DateApr 30, 2024

Elenagen, a novel DNA immunotherapy for the deadliest form of ovarian cancer, delays disease progression

Researchers created Elenagen, a novel DNA immunotherapy for deadly ovarian cancer, which significantly enhances standard chemotherapy and provides clinical benefits. The study shows that Elenagen delays disease progression in patients with stage III and IV platinum-resistant ovarian cancer.

SourceCureLab Oncology Inc.·JournalFrontiers in Oncology·TypeRandomized controlled/clinical trial·DateFeb 22, 2024

HKUMed achieves breakthrough in developing the PD-1-enhanced DNA vaccine for over 6-year cART-free AIDS prevention and virologic control

Researchers at HKUMed developed a PD-1-enhanced DNA vaccine that induces sustained virus-specific CD8+ T cell immunity in an AIDS monkey model. The vaccinated monkeys remained free of AIDS for six years without cART, demonstrating the potential of this strategy as a third-generation DNA vaccine for AIDS prevention and immunotherapy.

SourceThe University of Hong Kong·JournalMicrobiology Spectrum·TypeExperimental study·DateFeb 19, 2024

COVID-19: a respiratory vaccine effective in mice

A new respiratory vaccine has been shown to provide complete protection against lethal SARS-CoV-2 challenge in mice. The vaccine uses a DNA encoding a viral protein and is delivered through the mucous membranes, targeting immune cells in the nose and lungs.

SourceCNRS·JournalBiomaterials·TypeExperimental study·DateDec 16, 2022

Wistar scientists move HIV vaccine research forward by developing an immunogen that produces tier-2 antibodies—the kind that matter for combatting HIV

Researchers at The Wistar Institute have developed a DNA-encoded immunogen that produces tier-2 neutralizing antibodies in mice, opening up new possibilities for HIV vaccine development. The study demonstrates the potential of using native-like trimer to generate broadly neutralizing antibody responses.

SourceThe Wistar Institute·JournalNature Communications·TypeExperimental study·DateFeb 4, 2022

DNA vaccines for COVID-19 effective in mice, hamsters

Researchers developed a DNA vaccine encoding SARS-CoV-2 spike protein, which induced long-lasting antibodies in mice and hamsters. The vaccine showed protective efficacy against COVID-19 infection in hamsters, with no loss of body weight or viral RNA in their lungs.

SourcePLOS·JournalPLOS Neglected Tropical Diseases·DateMay 27, 2021

Detection of oral HPV DNA in teen, young adult females

Researchers detected oral HPV DNA in 6.2% of teen and young adult female participants, with detection decreasing over time since becoming sexually active. The study suggests that the HPV vaccine is less effective against certain types of oral HPV in vaccinated individuals compared to those who are fully unvaccinated.

SourceJAMA Network·JournalJAMA Network Open·DateOct 25, 2019

Engineered DNA vaccine protects against emerging Mayaro virus

Researchers have developed a novel DNA vaccine capable of inducing protective immunity against the Mayaro virus, which causes fever, rash, and joint pain. The vaccine demonstrated complete protection from death and clinical signs of infection in a mouse model, offering a promising solution for combating this emerging infectious disease.

SourcePLOS·JournalPLOS Neglected Tropical Diseases·DateFeb 7, 2019

One step closer to a DNA vaccine against dengue virus

A recent study published in Frontiers in Cellular and Infection Microbiology has made significant progress in developing a DNA vaccine against the dengue virus. Researchers have successfully induced persistent humoral and cellular immune responses in mice, providing efficient protection against lethal challenge from one of the four ser...

SourceFrontiers·JournalFrontiers in Cellular and Infection Microbiology·DateJun 29, 2017

A hybrid vehicle that delivers DNA

A new hybrid vehicle has been developed to deliver DNA vaccines that can fight HIV, cancer, influenza, and other diseases. The technology improves the delivery of genes to the immune system, increasing its effectiveness in treating major illnesses.

SourceUniversity at Buffalo·JournalProceedings of the National Academy of Sciences·DateNov 25, 2014

A nanotech fix for nicotine dependence

Researchers at Arizona State University are developing a new DNA nanostructure-based vaccine to combat nicotine dependence. The approach uses precision control over the placement of antigenic components to stimulate an immune response and recruit antibodies capable of binding with nicotine, potentially improving efficacy and safety.

A safer way to vaccinate

Researchers at MIT have developed a new type of vaccine-delivery film that gradually releases DNA coding for viral proteins, potentially overcoming safety risks and improving effectiveness. The film is implanted under the skin using microneedles and degrades over time, releasing the vaccine over days or weeks.

SourceMassachusetts Institute of Technology·JournalNature Materials·DateJan 28, 2013

Priming with DNA vaccine makes avian flu vaccine work better

Researchers found that a DNA vaccine expressing a key H5N1 protein enhanced the immune response to an H5N1 avian influenza vaccine. The prime-boost regimen produced high levels of protective antibodies and broadly neutralizing antibodies against the HA stem, a region relatively constant across many strains of influenza viruses.

SourceNIH/National Institute of Allergy and Infectious Diseases·JournalThe Lancet Infectious Diseases·DateOct 3, 2011

JCI online early table of contents: March 6, 2008

New DNA vaccine technology targets DCs for enhanced immune response; studies in mice show improved protection against viruses and potential applications for cystic fibrosis modeling. Genetic manipulation creates large animal models of CF, providing new avenues for disease research.

SourceJCI Journals·JournalJournal of Clinical Investigation·DateMar 6, 2008

Tattooing improves response to DNA vaccine

Researchers have found that tattooing is a more effective way of delivering DNA vaccines than intramuscular injection, producing stronger humoral and cellular immune responses. This method could have a role in routine vaccination of cattle or delivering therapeutic vaccines to humans.

SourceBMC (BioMed Central)·JournalGenetic Vaccines and Therapy·DateFeb 6, 2008

Penn researchers find monkeys able to fend off AIDS-like symptoms with enhanced HIV vaccine

Researchers at the University of Pennsylvania School of Medicine have discovered that an immune system gene can enhance a vaccine used to study HIV in macaque monkeys, providing greater protection against simian HIV. The study found that the addition of Interleukin-15 boosts the effects of a vaccine derived from the DNA of simian HIV.

SourceUniversity of Pennsylvania School of Medicine·JournalProceedings of the National Academy of Sciences·DateNov 20, 2007