Scientists Transferred a Longevity Gene — Could This Be the First Real Step Toward Extending Human Life?
Scientists Successfully Transfer Longevity Gene, Opening New Paths Toward Extending Human Lifespan.
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| Naked mole rat longevity gene research shows lifespan extension in mice |
A small burrowing mammal that can live more than 30 years, far exceeding the lifespan of similar-sized rodents. Even more remarkable is its extraordinary resistance to cancer and age-related diseases.
Now, researchers at the University of Rochester have taken a major step forward by transferring a longevity-related gene from naked mole rats into mice. The experiment demonstrates that longevity mechanisms evolved in one species can potentially be exported to another, offering a powerful new direction for aging research.
The results suggest that nature’s longest-lived animals may hold transferable biological tools that could one day help humans live healthier and longer lives.
The Key Molecule: High-Molecular-Weight Hyaluronan
The discovery revolves around a molecule called hyaluronan, a gel-like substance found in the extracellular matrix that surrounds cells.
Hyaluronan plays a critical role in:
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Cell communication
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Tissue repair
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Structural support in organs
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Regulation of inflammation
However, not all hyaluronan behaves the same way. Its biological effects depend strongly on its molecular size.
Large molecules known as high-molecular-weight hyaluronan (HMM-HA) are associated with:
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anti-inflammatory activity
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tissue protection
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improved cellular stability
In contrast, smaller fragments of hyaluronan can trigger inflammatory responses and may contribute to tumor progression.
The naked mole rat produces exceptionally large and abundant forms of HMM-HA, which scientists believe is one of the key reasons behind its unusual resistance to cancer and aging.
Engineering Mice With the Naked Mole Rat Gene
To test whether this protective mechanism could be transferred between species, researchers introduced the naked mole rat version of the gene HAS2 (Hyaluronan Synthase 2) into mice.
This gene regulates hyaluronan production.
The genetically engineered mice produced larger quantities of high-molecular-weight hyaluronan, closely resembling the biology observed in naked mole rats.
The results were striking.
Compared with normal mice, the modified animals showed:
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4.4% increase in median lifespan
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Lower levels of chronic inflammation
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Improved resistance to cancer
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Better gut barrier integrity during aging
These findings are particularly important because chronic inflammation—often called “inflammaging”—is widely considered one of the central drivers of aging and age-related diseases.
A Broader Evolutionary Pattern
Further comparative studies suggest this may not be unique to naked mole rats.
Scientists have found that many subterranean mammals also possess abundant high-molecular-weight hyaluronan, suggesting that this trait may have evolved as part of an evolutionary survival strategy.
Living underground exposes animals to:
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low oxygen environments
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high mechanical stress
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harsh ecological conditions
These pressures may have driven the evolution of biological systems that maintain tissue stability and resist cancer, traits that also happen to support longevity.
Turning the Discovery Into Human Therapies
While transferring genes between species is valuable for research, scientists emphasize that gene editing is unlikely to be the primary method used in humans.
Instead, researchers are exploring drug-like strategies that can replicate the same biological effects.
Two main approaches are currently being investigated:
1. Increasing hyaluronan production
Stimulating pathways that produce high-molecular-weight hyaluronan.
2. Slowing hyaluronan breakdown
Blocking enzymes called hyaluronidases, which degrade hyaluronan.
One promising discovery involves delphinidin, a natural pigment found in fruits such as blueberries, blackcurrants, and grapes.
Research has shown that delphinidin can:
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inhibit hyaluronidase enzymes
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increase levels of high-molecular-weight hyaluronan
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reduce cancer cell invasion
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suppress melanoma metastasis in mouse models
This suggests that future therapies could potentially enhance the body’s natural tissue-protective mechanisms without requiring genetic modification.
What This Means for the Future of Aging Research
The Rochester study provides an important proof of concept: some longevity adaptations found in nature may be portable across species.
However, aging is an extremely complex process involving many biological systems. While boosting high-molecular-weight hyaluronan appears beneficial for several tissues, it may not affect all age-related conditions equally.
For example, recent research indicates that some aspects of aging—such as hearing loss—may not respond strongly to this pathway.
Still, the findings represent a major step toward understanding how evolution has already solved many challenges related to aging.
By elucidating these natural mechanisms of longevity, scientists may eventually develop therapies that help humans achieve longer, healthier lives with fewer age-related diseases.
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About the Author
K M Manohar is an independent Sci-Tech writer and research curator who explains breakthrough discoveries that are shaping the future of technology.
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