据香港《星岛日报》报导,上海复旦大学有研究团队,成功将冷冻18个月的人脑组织复活,创下低温冷冻领域的新纪录。成果已经登上了国际权威的Cell子刊。有网民笑称,科幻小说《三体》的情节在现实出现。
报导引述微信公众号“新智元”介绍,研究由复旦大学邵志成博士领衔的团队进行。研究人员利用人类胚胎干细胞,花费三周培育出大脑类器官,而这些自组织脑细胞的小簇可以发育成各种类型的脑细胞。
随后,研究人员将这些类器官浸入不同的化合物中,冷冻至少48小时再解冻,监测其生长和细胞死亡情况。最终,研究团队发现由甲基纤维素、乙二醇、DMSO和Y27632组成的化学混合物效果最为理想,可以让组织解冻后死亡的细胞最少、生长得更多,将其命名为“MEDY”。
在MEDY中解冻的大脑类器官,在外观、生长、功能上都与从未冷冻过的同龄类器官非常相似,即便冷冻18个月依然如此,而且可以继续生长,最长超过了150天。
报导指出,在临床实验中,从一名9个月大、患有癫痫的女孩身上取出3立方毫米的脑组织,使用MEDY冷冻并解冻,之后至少2周内,仍然保持着活跃状态。研究人员认为,MEDY干扰了一个通常会导致脑细胞死亡的路径。
MEDY可用于保存各种脑类器官和人类脑组织,不会破坏神经细胞的结构或功能,能让脑细胞在冷冻、解冻后依然存活。
有网民笑称,研究成果像小说《三体》的情节。在小说《三体:死神永生》中,主角之一云天明的大脑被取出冷冻,发射到宇宙深空,最终被三体人捕获并复活。
-->
`,
"script":[{"type":"text/javascript","src":"//widgets.outbrain.com/outbrain.js","async":"async"}]
}
, "gg_rightside": {
"html":`
`,
"script":[{"type":"text/javascript","src":"//widgets.outbrain.com/outbrain.js","async":"async"}]
}
, "gg_duturandom": {
"html":`
`,
"script":[]
}
, "gg_square": {
"html":`
`,
"script":[]
}
, "gg_topbanner": {
"html":`
`,
"script":[]
}
, "gg_middlesquare": {
"html":`
`,
"script":[]
}
, "gg_dutu": {
"html":`
`,
"script":[]
}
, "gg_botline": {
"html":``,
"script":[]
}
, "gg_dututop": {
"html":`
`,
"script":[]
}
, "gg_shipintop": {
"html":`
`,
"script":[]
}
, "gg_inContent": {
"html":`
`,
"script":[]
}
, "gg_shipinrandom": {
"html":``,
"script":[]
}
, "gg_sideSticky": {
"html":`
`,
"script":[]
}
, "gg_bottombanner": {
"html":`
`,
"script":[{"type":"text/javascript","src":"//widgets.outbrain.com/outbrain.js","async":"async"}]
}
, "gg_marquee": {
"html":`
`,
"script":[]
}
}
const adEnv={
"gg_header": {
"html":``,
"script":[{"type":"text/javascript","exec":` var googletag = googletag || {}; googletag.cmd = googletag.cmd || []; var pbjs = pbjs || {}; pbjs.que = pbjs.que || []; `},{"type":"text/javascript","src":"https://adncdnend.azureedge.net/adn-hb/adn.wnx2.js","async":""},{"type":"text/javascript","src":"https://adncdnend.azureedge.net/adn-video/WenxuecityPlayer.js","async":"async"}]
}
}
const wxcEnv = {
"base":{
"exe":[],
"src":[
{"src": "/news/js/recommendednews.js","defer":"true"},
{"src":"/js/wxcFunc.js","defer":"true"}
]
},
"func":{
"exe":[
//展示评论
'function showMoreComments(){let n = 10;for(let i=0;i
2){dom.hide();}}$("#showallcomment").show();$("#showlesscomment").hide();};hideComments();',
],
"src":[
//图片,搜索,QR code
{"src": "/news/js/view.js?v=05132024"},
//计数器
{"src":"//count.wenxuecity.com/service/count/script/do.php?type=news&id=125578233&n=0&out=jsval","defer":"true"},
]
}
}
function wxcCode(){
wxcEnv.base.exe.forEach(x=>{
let tag = buildAdcode(x);
document.head.append(tag);
})
wxcEnv.base.src.forEach(src => {
let tag = buildSrc(src)
document.head.append(tag);
});
wxcEnv.func.exe.forEach(x=>{
let tag = buildAdcode(x);
document.body.append(tag);
})
wxcEnv.func.src.forEach(src => {
let tag = buildSrc(src)
document.body.append(tag);
});
}
function adcode(){
let adkey = Object.keys(ads);
adkey.forEach(x=>{
let code = ads[x].html;
let div = document.getElementById(x);
if(div)div.innerHTML = code;
ads[x].script.forEach(s=>{
if(Object.keys(s).indexOf('src')===-1){
let tag = buildAdcode(s.exec);
document.body.append(tag);
}else{
let tag = buildSrc(s);
document.body.append(tag);
}
})
})
}
function baseCode(){
let baseKeys = Object.keys(adEnv);
baseKeys.forEach(x=>{
adEnv[x].script.forEach(s=>{
if(Object.keys(s).indexOf('src')===-1){
let tag = buildAdcode(s.exec);
document.head.append(tag);
}else{
let tag = buildSrc(s);
document.head.append(tag);
}
})
})
}
function buildAdcode(script){
let tag = document.createElement('script');
tag.innerHTML = script;
return tag;
}
function buildSrc(obj){
let keys = Object.keys(obj);
let tag = document.createElement("script");
keys.forEach(key=>{
tag.setAttribute(key, obj[key]);
})
return tag ;
}