1 00:00:00,506 --> 00:00:12,586 [ Music ] 2 00:00:13,086 --> 00:00:16,746 >> DMD or Duchenne muscular dystrophy is the most common 3 00:00:16,826 --> 00:00:18,956 muscle disease affecting young boys; 4 00:00:19,026 --> 00:00:21,426 it affects about 1 in 3,600. 5 00:00:21,426 --> 00:00:24,536 It's an incurable condition, and it results 6 00:00:24,606 --> 00:00:30,376 in really muscle weakness that worsens over a boy's lifetime. 7 00:00:30,376 --> 00:00:33,956 Typically, boys lose their ability to walk around age 12. 8 00:00:34,306 --> 00:00:36,726 As boys go through adolescence, 9 00:00:37,246 --> 00:00:40,346 they have usually additional complications related 10 00:00:40,346 --> 00:00:44,196 to their lung or pulmonary health, as well as more often 11 00:00:44,196 --> 00:00:46,836 than not will develop cardiac disease, heart disease, 12 00:00:47,426 --> 00:00:50,496 and fortunately most boys will pass away in their 20s 13 00:00:50,496 --> 00:00:53,976 from complications such as pneumonia, or heart failure. 14 00:00:54,516 --> 00:01:01,546 [ Music ] 15 00:01:02,046 --> 00:01:04,156 In order to combat diseases like this we have 16 00:01:04,156 --> 00:01:06,856 to study the structure of proteins that are associated 17 00:01:07,016 --> 00:01:08,186 with that particular disease. 18 00:01:08,486 --> 00:01:12,416 In order to do that, we first must crystallize the protein, 19 00:01:12,416 --> 00:01:15,896 and that crystal is basically millions of copies 20 00:01:15,896 --> 00:01:19,696 of that same protein aligned like a row of bricks on a wall, 21 00:01:19,936 --> 00:01:20,916 but in three dimensions. 22 00:01:20,916 --> 00:01:23,776 >> But here's the problem, when we try to grow a crystal 23 00:01:23,776 --> 00:01:27,606 on earth gravity can affect the way the molecules become aligned 24 00:01:27,706 --> 00:01:28,836 on the crystal's surface 25 00:01:28,916 --> 00:01:32,816 and that affects the overall quality of the crystal. 26 00:01:32,816 --> 00:01:35,776 >> The ideal environment to grow a more perfect crystal would be 27 00:01:35,776 --> 00:01:38,806 a lab that we could have up in space orbiting the globe 28 00:01:39,106 --> 00:01:41,136 so that we are free of earth's gravity. 29 00:01:41,796 --> 00:01:43,136 Luckily we have one of those 30 00:01:43,136 --> 00:01:44,796 with the International Space Station. 31 00:01:46,616 --> 00:01:51,546 >> Since 2003, the Japan Aerospace Exploration Agency has 32 00:01:51,616 --> 00:01:53,946 conducted more than 16 sessions 33 00:01:53,946 --> 00:01:57,306 of the protein crystal growth experiments onboard the 34 00:01:57,306 --> 00:01:58,656 International Space Station. 35 00:01:59,496 --> 00:02:02,316 >> In microgravity the crystals grow much more slowly, 36 00:02:02,516 --> 00:02:06,186 but the molecules have more time to get perfectly arranged 37 00:02:06,186 --> 00:02:07,456 on the surface of the crystal, 38 00:02:07,456 --> 00:02:09,226 and that gives us much better data. 39 00:02:11,576 --> 00:02:14,496 >> One of the most promising results has been gained 40 00:02:14,566 --> 00:02:19,536 by studying a protein associated with Duchenne muscular disorder. 41 00:02:20,036 --> 00:02:22,986 >> Studying this protein that [inaudible] discovery 42 00:02:24,056 --> 00:02:26,756 like a key fitting into a key hole we are able 43 00:02:27,126 --> 00:02:31,176 to design the graph that perfectly binds to this protein. 44 00:02:31,856 --> 00:02:35,526 >> By knowing the shape of that key hole we can tailor make a 45 00:02:35,606 --> 00:02:38,956 drug to fit into a specific location of the protein. 46 00:02:39,336 --> 00:02:45,296 >> What this means is we may be able to slow the disease 47 00:02:45,406 --> 00:02:49,266 by half instead of being in a wheelchair 48 00:02:49,466 --> 00:02:55,616 at 12 we might be able to push that age to 25. 49 00:02:57,056 --> 00:03:00,616 Instead of being dependent upon this vision 50 00:03:00,796 --> 00:03:05,096 at 20 years old you live to be 40. 51 00:03:05,356 --> 00:03:10,776 What are we talking about is potentially doubling the life 52 00:03:10,916 --> 00:03:16,236 span of many of the DMD patients. 53 00:03:17,206 --> 00:03:22,546 And it's all because of such a [inaudible] afforded to us 54 00:03:23,286 --> 00:03:25,636 by the International Space Station. 55 00:03:26,246 --> 00:03:28,436 >> This research is really just in its infancy; 56 00:03:28,646 --> 00:03:30,196 there are literally thousands 57 00:03:30,196 --> 00:03:32,676 of other proteins who's structures we need to determine, 58 00:03:33,306 --> 00:03:35,196 and the International Space Station is going 59 00:03:35,196 --> 00:03:38,326 to provide a platform where we can hopefully grow much better 60 00:03:38,386 --> 00:03:41,306 crystals that will allow us to get structures and to learn more 61 00:03:41,306 --> 00:03:44,056 about how these molecules function in our body, 62 00:03:44,386 --> 00:03:46,176 in bacteria, or in viruses. 63 00:03:47,126 --> 00:03:49,186 We're doing this research not just for ourselves 64 00:03:49,186 --> 00:03:51,246 or our children, but for generations to come. 65 00:03:51,776 --> 00:03:53,076 Many of the protein structures 66 00:03:53,176 --> 00:03:55,136 that will be determined wouldn't be possible 67 00:03:55,326 --> 00:03:56,896 without the International Space Station. 68 00:03:57,516 --> 00:04:06,546 [ Music ] 69 00:04:07,046 --> 00:04:08,866 >> I'm hoping that those trials will be successful, 70 00:04:09,146 --> 00:04:11,866 that they will tell us yes there is a way 71 00:04:11,906 --> 00:04:14,546 that we can keep these boys stronger 72 00:04:14,546 --> 00:04:15,826 for a longer period of time. 73 00:04:15,956 --> 00:04:18,006 That we can help their heart and pulmonary function 74 00:04:18,006 --> 00:04:20,246 and that they can live longer; that they can grow up and go