NMN restores trained-immunity antitumor effect in aged mice
A mouse study found that NMN, a precursor of NAD+, restored beta-glucan-induced antitumor activity in aged animals or those with NAD+ deficiency. The results come only from animals.
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Source: NMN restores trained-immunity antitumor effect in aged mice (science.org). Summary written with AI from the source and reviewed by rules; read the original.
What the research shows
A study in mice found that NMN, a precursor of NAD+, restored antitumor activity induced by beta-glucan in aged animals or animals with NAD+ deficiency. The effect is linked to the KDM5A sensor, a protein involved in regulating the immune response. The researchers describe the finding as evidence limited to animals.
Trained immunity is the ability of the immune system to respond more strongly to a later stimulus after an earlier exposure, and beta-glucan is a naturally derived substance often used in this kind of research. Aging and falling levels of NAD+, a molecule essential to cell metabolism, are known to change this type of response in animals. Even so, the study does not establish whether the same mechanism happens in humans, and results seen in mice often do not carry over to people.
What it means
The finding suggests that aging and NAD+ levels may influence how the trained immune system responds to tumors in mice. It is not known whether this process happens in humans, or whether it would affect disease in people.
How to read it with care
This result does not replace a medical consultation. Anyone considering a change in diet, supplements or treatment should talk to a doctor or another qualified health professional.