[ti:Cancer Patients’ Own Cells Used to Test Treatments] [by:www.51voa.com] [00:00.00]更多听力请访问51VOA.COM [00:00.04]Researchers used a brain cancer patient's cells [00:05.72]to make a model of a tumor to test treatments [00:09.40]before using them on the body. [00:13.40]The tumor model was created with 3D printing materials. [00:19.84]The scientists removed a piece of the tumor from a patient [00:24.60]with glioblastoma and used it to print a model of the tumor. [00:31.40]That explanation comes from Professor Ronit Satchi-Fainaro, [00:38.00]who led the research at Tel Aviv University in Israel. [00:44.00]Glioblastoma is an aggressive form of brain cancer. [00:49.52]The patient's blood is pumped through the printed tumor [00:54.00]and then a drug or therapeutic treatment is pumped in. [00:59.96]Earlier studies have used similar "bioprinting" methods [01:05.24]to reproduce cancer environments. [01:09.36]But the Tel Aviv University researchers [01:12.44]say they are the first to print a "viable" tumor. [01:17.96]Satchi-Fainaro said they have about two weeks [01:22.80]to test the different therapies on a tumor [01:26.24]and find a fitting treatment for the patient. [01:30.52]A treatment is considered promising [01:33.16]if the printed tumor shrinks [01:35.28]or if it lowers metabolic activity. [01:40.24]The research was released on Wednesday [01:43.52]in the publication Science Advances. [01:48.28]Glioblastoma is the most common form [01:51.92]of brain cancer in adults. [01:55.56]It spreads quickly to other parts of the brain, [01:59.36]making it difficult to treat. [02:02.84]Survival is around 40 percent in the first year [02:07.36]and 17 percent in the second. [02:11.60]That information is from the American Association [02:16.48]of Neurological Surgeons. [02:20.08]Researchers have often printed 3D tumor models [02:24.72]to plan for surgery. [02:27.92]But more recent developments have used live cells [02:32.08]as a kind of printing substance to build up the parts of a tumor. [02:39.08]Ofra Benny leads similar research [02:42.48]at the Hebrew University of Jerusalem. [02:47.00]She said using a patient's own cells [02:50.52]to make 3D tumor models could be "a game changer [02:54.88]in the field of personalized medicine." [02:58.92]The more these 3D models are made, the better the prediction [03:04.16]for how a treatment will work on the patient's tumor, she said. [03:10.52]I'm Alice Bryant. 更多听力请访问51VOA.COM