新的基因编辑技术诞生，更精准，风险更小
<p><span word="Scientists">Scientists</span> <span word="in">in</span> <span word="the">the</span> <span word="US">US</span> <span word="have">have</span> <span word="developed">developed</span> <span word="a">a</span> <span word="powerful">powerful</span> <span word="new">new</span> <span word="genome">genome</span> <span word="editing">editing</span> <span word="system">system</span> <span word="that">that</span> <span word="could">could</span> <span word="offer">offer</span> <span word="significantly">significantly</span> <span word="more">more</span> <span word="precision">precision</span> <span word="and">and</span> <span word="efficiency">efficiency</span> <span word="than">than</span> <span word="the">the</span> <span word="current">current</span> <span word="CRISPR">CRISPR</span> <span word="standard">standard</span>.</p><p>美国科学家已研发出强大的新的基因组编辑系统，显著提高目前<span word="CRISPR">CRISPR</span>标准的精度和效率。</p><p><span word="While">While</span> <span word="CRISPR">CRISPR</span>-<span word="Cas">Cas</span>9 <span word="is">is</span> <span word="a">a</span> <span word="revolutionary">revolutionary</span> <span word="medical">medical</span> <span word="technology">technology</span> <span word="that">that</span> <span word="lay">lay</span> <span word="the">the</span> <span word="modern">modern</span> <span word="foundations">foundations</span> <span word="for">for</span> <span word="editing">editing</span> <span word="genetic">genetic</span> <span word="code">code</span> – <span word="including">including</span> <span word="variants">variants</span> <span word="associated">associated</span> <span word="with">with</span> <span word="disease">disease</span> – <span word="there">there</span> <span word="have">have</span> <span word="long">long</span> <span word="been">been</span> <span word="concerns">concerns</span> <span word="over">over</span> <span word="its">its</span> <span word="potential">potential</span> <span word="for">for</span> <span word="imprecision">imprecision</span>.</p><p>虽然<span word="CRISPR">CRISPR</span>-<span word="Cas">Cas</span>9是革命性的医疗技术，为编辑包括与疾病相关的变异在内的遗传密码奠定了现代基础，但一直存在对其潜在的不精确性的担忧。</p><p><span word="Specifically">Specifically</span>, <span word="many">many</span> <span word="fear">fear</span> <span word="that">that</span> <span word="CRISPR">CRISPR</span>-<span word="Cas">Cas</span>9 <span word="editing">editing</span> <span word="carries">carries</span> <span word="the">the</span> <span word="potential">potential</span> <span word="to">to</span> <span word="introduce">introduce</span> <span word="errors">errors</span> <span word="in">in</span> <span word="the">the</span> <span word="form">form</span> <span word="of">of</span> <span word="uncontrolled">uncontrolled</span> <span word="insertions">insertions</span> <span word="and">and</span> <span word="deletions">deletions</span> <span word="in">in</span> <span word="genetic">genetic</span> <span word="code">code</span>, <span word="called">called</span> <span word="indels">indels</span>.</p><p>具体来说就是很多人害怕<span word="CRISPR">CRISPR</span>-<span word="Cas">Cas</span>9编辑有可能在被称为索引的遗传密码中不受控制的插入和删除信息从而导致错误。</p><p><span word="Researchers">Researchers</span> <span word="say">say</span> <span word="the">the</span> <span word="new">new</span> <span word="system">system</span>, <span word="dubbed">dubbed</span> '<span word="prime">prime</span> <span word="editing">editing</span>' <span word="by">by</span> <span word="its">its</span> <span word="inventors">inventors</span> <span word="at">at</span> <span word="the">the</span> <span word="Broad">Broad</span> <span word="Institute">Institute</span> <span word="of">of</span> <span word="MIT">MIT</span> <span word="and">and</span> <span word="Harvard">Harvard</span> <span word="University">University</span>, <span word="could">could</span> <span word="change">change</span> <span word="the">the</span> <span word="game">game</span> <span word="thanks">thanks</span> <span word="to">to</span> <span word="a">a</span> <span word="new">new</span> <span word="protein">protein</span> <span word="that">that</span> <span word="enables">enables</span> <span word="high">high</span>-<span word="precision">precision</span> <span word="edits">edits</span> <span word="of">of</span> <span word="genetic">genetic</span> <span word="targets">targets</span>.</p><p>研究人员说被麻省理工学院和哈佛大学的布罗德研究所的发明者称为“先导编辑”的这一新系统能改变基因，有一种新型蛋白质使研究人员可以对目标基因进行高精度编辑。</p>
页:
[1]