Scientists Incorporate Spider’s Silk-Spinning Genes Into Goats

Researchers from the University of Wyoming have developed a way to incorporate spiders’ silk-spinning genes into goats, allowing the researchers to harvest the silk protein from the goats’ milk for a variety of applications. For instance, due to its strength and elasticity, spider silk fiber could have several medical uses, such as for making artificial ligaments and tendons, for eye sutures, and for jaw repair. The silk could also have applications in bulletproof vests and improved car airbags.

Normally, getting enough spider silk for these applications requires large numbers of spiders. However, spiders tend to be territorial, so when the researchers tried to set up spider farms, the spiders killed each other.

To solve this problem, Randy Lewis, a professor of molecular biology at the University of Wyoming, and other researchers decided to put the spiders’ dragline silk gene into goats in such a way that the goats would only make the protein in their milk. Like any other genetic factor, only a certain percentage of the goats end up with the gene. For instance, of seven goat kids born in February 2010, three have tested positive for having the silk protein gene. When these transgenic goats have kids and start lactating, the researchers will collect the milk and purify the spider silk protein into “much, much higher quantities,” Lewis said.
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Nepal Runs Out Of Goats To Sacrifice

nepal goat

Nepal’s capital city, Kathmandu, has run out of goats to sacrifice just days before the country’s biggest religious festival of the year.The government has been forced to send officials into the countryside to look for animals to help ease the shortage in Kathmandu.Goats and other animals are ritually slaughtered and eaten during the Hindu festival of Dashain to appease the goddess of power, Durga.

Bijaya Thapa, deputy general manager at the Nepal Food Corporation, said: “Kathmandu city faces a shortage of goats during the festival, which always brings a high demand for goat meat.”We are bringing goats in to ease the supply and to control dramatic price hikes.”
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