Anti-aging gene shown to rewind heart age by 10 years in centenarians
Jan. 25, 2023.
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Single administration halts decay
An anti-aging gene discovered in a population of centenarians has been shown to rewind the heart’s biological age by 10 years, offering a potential target for patients with heart failure.
The gene was discovered by scientists at the University of Bristol and the MultiMedica Group in Italy, and funded by the British Heart Foundation and the Italian Ministry of Health. The study was published in the journal Cardiovascular Research.
Carriers of healthy mutant genes, like those living in blue zones of the planet, often live to 100 years or more and remain in good health. These individuals are also less prone to cardiovascular complications. Scientists believe the gene helps to keep their hearts young by protecting them against diseases linked to aging, such as heart failure.
In this new study, researchers demonstrate that one of these healthy mutant genes, previously proved particularly frequent in centenarians, can protect cells collected from patients with heart failure requiring cardiac transplantation.
Single administration halts decay of heart function in elderly mice
The Bristol team, led by Professor Paolo Madeddu, has found that a single administration of the mutant anti-aging gene halted the decay of heart function in middle-age mice. Even more remarkably, when given to elderly mice, whose hearts exhibit the same alterations observed in elderly patients, the gene rewound the heart’s biological clock age by the human equivalent of more than ten years.
Professor Madeddu, Professor of Experimental Cardiovascular Medicine from Bristol Heart Institute at the University of Bristol and one of the study’s authors, explained: “The heart and blood vessel function is put at stake as we age. However, the rate at which these harmful changes occur is different among people. Smoking, alcohol, and sedentary life make the aging clock faster. Whereas eating well and exercising delay the heart’s aging clock.
Healthy gene found in centenarians could be transferred to unrelated people to protect their hearts
“In addition, having good genes inherited from parents can help to stay young and healthy. Genes are sequences of letters that encode proteins. By chance, some of these letters can mutate. Most of these mutations are insignificant; in a few cases, however, the mutation can make the gene function worse or better, like for the mutant anti-aging gene we have studied here on human cells and older mice.”
Monica Cattaneo, a researcher of the MultiMedica Group in Milan, Italy, and first author of the work, said: “The cells of the elderly patients, in particular those that support the construction of new blood vessels, called ‘pericytes’, were found to be less performing and more aged. By adding the longevity gene/protein to the test tube, we observed a process of cardiac rejuvenation: the cardiac cells of elderly heart failure patients have resumed functioning properly, proving to be more efficient in building new blood vessels.”
Centenarians pass their healthy genes to their offspring. The study demonstrates for the first time that a healthy gene found in centenarians could be transferred to unrelated people to protect their hearts. Other mutations might be found in the future with similar or even superior curative potential than the one investigated by this research. Professor Madeddu and Professor Annibale Puca of the MultiMedica Group believe this study may fuel a new wave of treatments inspired by the genetics of centenarians.
Professor Madeddu added: “Our findings confirm the healthy mutant gene can reverse the decline of heart performance in older people. We are now interested in determining if giving the protein instead of the gene can also work. Gene therapy is widely used to treat diseases caused by bad genes. However, a treatment based on a protein is safer and more viable than gene therapy.
“We have a new confirmation and enlargement of the therapeutic potential of the gene/protein, says Annibale Puca, Head of the laboratory at the IRCCS MultiMedica and Professor at the University of Salerno. “We hope to test its effectiveness soon in clinical trials on patients with heart failure.”
Paper: The longevity-associated BPIFB4 gene supports cardiac function and vascularization in aging cardiomyopathy by Annibale Puca et al. in Cardiovascular Research [open access]