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核克隆和细胞疗法：事实和虚构Nuclear Cloning and Cell Therapy: Fact and Fiction |
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| 课程网址: | http://videolectures.net/mitworld_jaenisch_ncac/ |
| 主讲教师: | Rudolf Jaenisch |
| 开课单位: | 麻省理工学院 |
| 开课时间: | 2011-06-14 |
| 课程语种: | 英语 |
| 中文简介: |  |
| 课程简介: | The subject of cloning can instantly spark passionate debate: Will it enable us to resurrect beloved family members, or create Frankensteins? Rudolf Jaenisch wants to remove “hot air” from the discussion. His talk provides a clear picture of what is and is not scientifically feasible. Animal cloning, first pioneered in Dolly the sheep, used non-reproductive cells to create a carbon copy of the donor animal. This technique, tested many times, fails frequently and yields severe abnormalities. Consequently, Jaenisch believes the cloning of humans will never prove practical. But another variety of cloning generates far fewer genetic glitches and holds immense medical promise. The earliest cells of embryos can be manipulated to develop into neurons, or blood, or muscle, making them very useful tools in therapy for diseases like diabetes, Parkinson’s or leukemia. Jaenisch says these embryonic stem (ES) cells could be “an inexhaustible source of any tissue type and tailored to the needs of the patient.” But in spite of the potential rewards of this work, federal agencies and many others oppose it because so far the only source of ES cells has been human embryos. Jaenisch seeks a middle ground: scientists may not attempt cloning a human being, but may harvest and grow ES cells for therapeutic purposes from a human embryo. |
| 关 键 词: | 克隆; 热空气; 碳拷贝 |
| 课程来源: | 视频讲座网 |
| 最后编审: | 2019-06-03：cjy |
| 阅读次数: | 62 |