Ultracentrifugation is often described as the “gold standard†to isolate or purify extracellular vesicles (EVs) including exosomes. Now, a collaborative EV study led by researchers at Clemson University in South Carolina, has shown that for purification of EVs from urine samples, this gold standard can be improved with a simple modification.
In this report, we provide details on 45 companies that have emerged over the last decade to pursue exosome therapeutics and diagnostic goals. Two tables provide a quick reference for this information on investor funding and founding date. A further table provides a summary of 242 exosome-focused clinical trials.
Therapeutic RNA delivery can be accomplished by a variety of viral or non-viral methods. The type of RNA structure carried by these diverse delivery methods also varies (e.g., oligonucleotides, miRNA, siRNA, lncRNA, mRNA, saRNAs). The particular delivery method used is dependent on the types of RNA and the target and is a hugely important consideration for the development of effective drugs.
Exosomes represent a potential sweet spot between small molecules, biologics, and cell therapies for a future as highly potent multifaceted biopharmaceuticals. Studies that are leading towards clinical applications have raised expectations that exosomes will eventually provide treatment for a wide range of orphan diseases. From basic research to clinical application, the ability to stably store exosomes whilst maintaining their unique characteristics is fundamental to their research and therapeutic development.
Exosomes and viruses have many things in common, including their size, lipid coat, and the ability to transport RNA and proteins between cells. Exosomes and viruses co-purify using techniques including size exclusion chromatography. Are these similarities a coincidence or is there a shared past?
Fetal maturation rate and birth timing are both regulated by factors including hormones, nutrients, and adipokines. Increasingly, the contribution of exosomes to the establishment of a successful pregnancy and delivery process is becoming clear. Exosomes regulate the physiology and metabolism of both the mother and the fetus by acting as messengers that carry specific biological signals between cells/tissues—generating an intimate relationship between them.
Regenerative medicine aims to address the underlying causes of a patient’s condition to replace lost tissue and restore normal function. But the challenge for regenerative medicine of translating basic research into clinical therapies is immense.
Radiation-induced bystander effects (RIBEs) describe damage to tissues that lie outside of the radiation field. Even though these tissues were not exposed to radiation, they demonstrate responses. Growing evidence supports a role for exosomes mediating these effects.
The role of exosomes in the development of autoimmune diseases is increasingly well understood. Amongst these, rheumatoid arthritis is one of the most common. It affects about 1% of women and 0.5% of men in OECD nations. Over the last decade, the potential use of exosomes for the treatment of rheumatoid arthritis has become a hot topic.
An unprecedented effort led to the rapid development of vaccines and therapeutics to mitigate the impact of Covid 19. Vaccines against SARS-CoV-2 are highly effective in limiting the incidence of severe disease. But with new variants emerging and patchy vaccination coverage, large numbers of people are still becoming severely affected and dying.
