Anti-aging function of vitamin B2.👴👵

Previous studies have shown that the accumulation of aging cells in the body can lead to aging-related diseases and aging. Using supplements or drugs containing vitamin B2 can inhibit cell senescence. This may prevent and improve age-related diseases and extend people's healthy lifespan. Recently, researchers from Kobe University in Japan stated that adding vitamin B2 to cells exposed to the stress of aging will increase the ability of mitochondria to produce energy and prevent cell aging.

1. The mechanism of human aging.

Aging research is becoming more and more important to solve the medical and welfare problems that come with it and to help people live healthier lives. The process of body aging is not fully understood, but the aging of the cells that make up the body has been proven to be a factor. As the cell division cycle repeats, the telomere region at the end of each chromosome becomes shorter, which eventually leads to cell senescence. It is the cell loses the ability to divide. The reduction of telomere area is not the only relevant factor. Various types of stress on cells (such as DNA damage and reactive oxygen bursts) can also cause cell senescence. Aging cells caused by these stresses accumulate in the body with age. Aging cells have the harmful ability to cause the decline of the function of every organ in the body. By preventing the accumulation of senescent cells, age-related diseases such as Alzheimer's disease, cancer, cardiovascular disease and diabetes can be prevented or improved. 

2. The original intention of the research.

Vitamins are micronutrients necessary to maintain the normal functioning of the human body. Since the human body cannot synthesize vitamins, it must be absorbed from food and drinks. Vitamin B2 (also called riboflavin) is widely found in foods such as eggs, meat, and dairy products. It is an important vitamin for energy production and metabolism. Lack of vitamin B2 can cause symptoms such as mouth swelling and anemia. In addition, excessive intake of vitamin B2 generally has no negative effects, because it is a water-soluble vitamin that can be excreted from the body very quickly. Although vitamin B2 is an essential nutrient for maintaining health, its relationship with aging has not been studied. The research team began to study the effect of vitamin B2 on aging, hoping that if daily vitamins can inhibit cell aging, this will help provide low-cost and safe anti-aging drugs.

3. Research methods.

The research team found that by increasing the amount of SLC52A1 produced, the phenomenon of cell aging can be resisted. SLC52A1 is a vitamin B2 transporter. It is responsible for transporting vitamin B2 to the cell. When the production of SLC52A1 increases, even under stress conditions (treatment of human cells with drugs to damage DNA and induce senescence), cellular senescence does not occur immediately. On this basis, the researchers exposed the cells to a stressful environment, and then increased the vitamin B2 content in the culture medium. They found that the ability to resist aging increases with the content of vitamin B2 in the solution. In the cell, vitamin B2 is converted into a substance called flavin adenine dinucleotide (FAD), which is a coenzyme that promotes the chemical reactions necessary for biological activities (such as energy production). In stressed cells, mitochondrial activity temporarily increases and then decreases in activity leading to senescence. By increasing the content of vitamin B2 in the culture medium, maintaining a high level of stress-mediated mitochondrial activity, this also has anti-aging effects. Studies have found the activity of AMPK enzyme, which can detect energy deficiency in cells, and found that AMPK activity is inhibited by mitochondrial activity. On the contrary, using drugs to inhibit mitochondrial activity will cause AMPK to be activated and send a signal to the p53 (inducing cell senescence) protein to prevent cell division, leading to a state of senescence. The above results indicate that vitamin B2 can increase the mitochondrial activity of stressed cells and prevent aging by inhibiting the functions of AMPK and p53.

Summary: Cells under stress will produce SLC52A1 and increase their absorption of extracellular vitamin B2. Once in the cell, vitamin B2 will be converted into FAD, and increase the production of mitochondrial energy by becoming a coenzyme of the mitochondrial respiratory chain complex II. Therefore, AMPK and p53 (inducing cellular senescence) are inactivated, so stress-mediated cellular senescence is suppressed.

👉Vitamin B2 is easily absorbed from food and supplements, and even if it is taken too much, it will be quickly excreted from the body. Therefore, based on the cellular anti-aging properties of vitamin B2, treatment methods for age-related diseases have been developed. This drug is believed to be relatively cheap and safe.

For more detail, you can read this article.👇

Nagano T, Awai Y, Kuwaba S, Osumi T, Mio K, Iwasaki T, Kamada S. Riboflavin transporter SLC52A1, a target of p53, suppresses cellular senescence by activating mitochondrial complex II. Mol Biol Cell. 2021 Nov 1;32(21):br10. doi: 10.1091/mbc.E21-05-0262. Epub 2021 Sep 15. PMID: 34524871.