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Bats may hold clue to 'super immunity', longevity

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Press Trust of India Melbourne

Bats are amazing creatures and one of the most abundant and widespread mammals on Earth, researchers said.

The Bat Pack, a team of researchers at the Australian Animal Health Laboratory (AAHL), conducted a wide range of research into bats and bat borne viruses, and their potential effects on the human population.

Their study provides an insight into the evolution of the bat's flight, resistance to viruses, and relatively long life.

The Bat Pack, in collaboration with the Beijing Genome Institute, led a team that sequenced the genomes of two bat species - the Black Flying Fox, an Australian mega bat, and the David's Myotis, a Chinese micro bat.

 

Once the genomes were sequenced, they compared them to the genomes of other mammals, including humans, to find where the similarities and differences lay.

Chris Cowled, post-doctoral fellow at AAHL says the research may eventually lead to strategies to treat, or even prevent disease in humans.

"A deeper understanding of these evolutionary adaptations in bats may lead to better treatments for human diseases, and may eventually enable us to predict or perhaps even prevent outbreaks of emerging bat viruses," Cowled said.

"Bats are a natural reservoir for several lethal viruses, such as Hendra, Ebola and SARS, but they often don't succumb to disease from these viruses. They're also the only mammal that can fly, and they live a long time compared to animals similar in size," he said.

Flying is a very energy intensive activity that also produces toxic by-products, and bats have developed some novel genes to deal with the toxins. Some of these genes, including P53, are implicated in the development of cancer or the detection and repair of damaged DNA.

"What we found intriguing was that some of these genes also have secondary roles in the immune system.

"We're proposing that the evolution of flight led to a sort of spill over effect, influencing not only the immune system, but also things like ageing and cancer," Cowled said.

The study was published in the journal Science.

  

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First Published: Dec 23 2012 | 5:45 PM IST

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