It began 13 years ago, when a neurologist at Duke University Wolfgang Liedtke, PhD, with a team of researchers discovered the TRPV4 molecule that can initiate a series of complex cellular events leading to pain.  In the latest chapter of the TRPV4 research Dr. Liedtke and his colleagues found that blocking the molecule might protect against painful sunburns—at least in mice. Researchers exposed our furry friends to UV light, and found that those with a blocked TRPV4 molecule avoided the painful effects of sunburn, according to their study published in the Proceedings of the National Academy of Sciences. [sidebar] “The more we deleted the molecule, the less sensitive to UV light they became,” said Dr. Liedtke, who warns that this is no reason to throw out your stash of sunscreen anytime soon. “We demonstrated that we can prevent blisters, redness, and pain, but we’re still not sure if the technology could protect against cancer-causing DNA damage.” (Editor’s Note: UVB rays can damage your skin whether or not you turn red, as we reported in Tanning Salon Claims, Busted.) So for now, stick to your sunscreen and day cream, but if you’re hypersensitive to UV rays, (as in, you can hardly go outside, even wearing SPF 50, without burning), there could be a solution on the horizon. “We may able to develop a sunscreen that also contains this blocker, which would help people who are incredibly sensitive to the sun,” says Dr. Liedtke.  More From Prevention: Which Sunscreen Is Right For You?  Sunscreen Is The Ultimate Aging Cream  Are You Allergic To Sunscreen?