A new mRNA and lipid nanoparticle (mRNA-LNP) platform could selectively reprogram in vivo cytotoxic effector T cells (Teff), the cells responsible for eliminating infected or tumor cells. To achieve this, scientists at the University of Pennsylvania conjugated LNPs with fractalkine, a molecule that binds to the CX3CR1 receptor, which is a marker of Teff cells. Using this strategy, the researchers delivered an mRNA encoding new proteins such as IL‑2 or human CD62 L‑selectin, opening the door to temporarily reprogramming these cells within the body, both in the blood and in lymphoid tissue, where they reside and become activated.

A new mRNA and lipid nanoparticle (mRNA-LNP) platform could selectively reprogram in vivo cytotoxic effector T cells (Teff), the cells responsible for eliminating infected or tumor cells. To achieve this, scientists at the University of Pennsylvania conjugated LNPs with fractalkine, a molecule that binds to the CX3CR1 receptor, which is a marker of Teff cells. Using this strategy, the researchers delivered an mRNA encoding new proteins such as IL‑2 or human CD62 L‑selectin, opening the door to temporarily reprogramming these cells within the body, both in the blood and in lymphoid tissue, where they reside and become activated.

When Robert Kennedy Jr. announced the cancellation of 22 projects related to mRNA vaccines and the end of new investments in that technology, the U.S. Secretary of Health only mentioned their use against respiratory viruses, without referring to other applications. The vaccines whose safety and effectiveness Kennedy is questioning are based on the same molecular principles as cancer vaccines under development. “Continued investment in mRNA technology is essential to fully realize its potential in oncology and ensure that promising strategies like neoantigen-based vaccines reach clinical application.” Kazuhiro Kakimi, professor at the Department of Immunology at Kindai University Faculty of Medicine, told BioWorld.

In August, a press release from HHS announced the cancellation of 22 vaccine research projects based on mRNA, the latest available technology aimed at developing therapies for viral infections, cancer, and genetic conditions. What happens to mRNA innovation when funding dries up? This series explores how reductions in funding could impact mRNA technology, affecting innovation, research and future therapies.

Generation Bio Co. has announced a breakthrough in its nonviral genetic medicine platform with the development of a proprietary, novel DNA called immune-quiet DNA (iqDNA).

Immetas Therapeutics Inc. and GC Biopharma Corp. have entered into a research collaboration to discover and develop novel mRNA therapeutics for the treatment of a broad range of autoimmune diseases. The collaboration combines Immetas’ proprietary platform for modulating innate immune pathways with GC Biopharma’s mRNA therapeutic and lipid nanoparticle (LNP) delivery platforms.

Messenger RNA, or mRNA, represents a relatively new class of therapeutics with the potential to prevent and treat a wide range of diseases. A well-known success story is of the mRNA vaccines that controlled the COVID-19 pandemic, which has fueled enthusiasm for the field. But biotechs are also developing mRNA candidates for several other infectious diseases, including malaria, tuberculosis and HIV, as well for cancer, autoimmune and allergic diseases. However, delivering nucleic acid therapeutics can be challenging, since mRNA cannot get into cells on its own. “Nucleic acid therapeutics can be incredibly fragile,” Thomas Madden, CEO of Acuitas Therapeutics, told BioWorld. “When injected into the body without a delivery system, messenger RNA, for example, is rapidly destroyed.”

Launching with a $300 million series A financing, Renagade Therapeutics Inc. has set out to target disease on a large scale – at every point throughout the human body where disease forms – through its RNA platform designed to deliver, code, edit and insert genetic information. The round, led by founding investors MPM Bioimpact and F2 Ventures, is the largest venture capital (VC) round for a U.S.-based biopharma company this year, and it is among the top series A rounds for the industry to date.