Particle-based drug eased inflammation, spared defenses in mice
In experiments in mice with immune attacks after stem cell transplants, a particle-based drug improved survival and maintained control of viral or bacterial infections.
Limit: The abstract omits sample sizes, doses, and follow-up duration
Edited by Boris Djordjevic · AgingResearch.News
In an animal experiment, researchers tested a particle-based drug in mice with graft-versus-host disease after blood-forming stem cell transplants. In this condition, donor immune cells attack the recipient’s tissues. The drug delivered nicotinamide adenine dinucleotide, a molecule involved in cell metabolism, into cells.
The drug improved disease severity scores and survival. It reduced damage to blood vessels and the cells lining tissues, and curbed excessive inflammation across organs affected by the disease. Unlike immune suppression, it preserved immune functions, including engulfing material, killing target cells and remembering past threats. In mice infected after transplantation with influenza or Klebsiella bacteria, the drug maintained control of infection without reigniting graft-versus-host disease.
Why it matters
The work addresses a key question about harmful inflammation: whether it can be controlled while retaining infection defenses, rather than broadly suppressing the immune system.
Caveats
These animal experiments do not establish benefits or harms in people. The abstract did not provide sample sizes, doses or follow-up duration.
The paper
The Fourth Affiliated Hospital of Soochow University; Organoid Innovation Center
Science Advances, Oct 23, 2026
