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AI筛万亿分子让92岁细胞重回25岁?所谓“逆龄首针”已打进人眼!

AI筛万亿分子让92岁细胞重回25岁?所谓“逆龄首针”已打进人眼!

92 岁的人类皮肤细胞,被拉回约 25 岁;一万亿个分子,经 AI 筛到约 200 个;一项细胞重编程疗法,已经给首位患者打了针。

这几句话挤在同一条 X 视频帖里,像一份从未来偷跑出来的病历。大卫·辛克莱(David Sinclair)甚至给出一句极其诱人的判断:让身体年轻,它会自己修复。

细看这些说法的接缝,社交媒体把两条研发路线剪成了一条高速公路。AI 筛选对应化学小分子探索;已经进入人体的 ER-100,则是一种向眼内递送 OSK 的基因疗法。它们出自同一套“重置年龄信息”的科学想象,临床成绩单却不能混用。

▲ 入口帖把离体皮肤细胞、AI 筛分子与人体试验压缩进同一段表述,信息密度很高,证据层级也因此容易混淆。

92岁回到25岁,回拨的是细胞读数

辛克莱在访谈中称,实验室能用 OSK 部分细胞重编程(partial cellular reprogramming),将 92 岁捐赠者的皮肤细胞拉回约 20~25 岁的生物学年龄。他同时说:

“The hard part over the last 10 years has been turning it into a safe and effective drug for people.”

“过去十年的难点,是把它做成对人安全、有效的药物。”

这里的“25 岁”来自 DNA 甲基化时钟、转录组时钟等分子尺子。培养皿里的细胞呈现了更年轻的标记,一位 92 岁老人并没有因此恢复成 25 岁身体细胞时钟能否回拨,人体器官能否恢复功能,最终能否形成药物,三者之间隔着漫长的毒理、递送和临床验证。

AI在万亿分子里捞针,药片仍在远处

按照入口帖转述,AI 在数月内扫描多达一万亿个分子,把范围缩到约 200 个候选。研究者借助 AlphaFold 的蛋白结构预测做虚拟对接,还用图像模型判断细胞形态有没有变年轻。这些数字来自访谈口径,目前找不到一篇“万亿筛选已成药”的同行评议论文与之对应。

可以核验的论文支点出现在 2023 年。Yang 等人在 Aging 发表研究,报告六种化学鸡尾酒能在不到一周内逆转人类细胞的转录组年龄,改善核质区隔,同时保留细胞身份。实验给“小分子模拟重编程”开了一扇门。化学组合空间大得令人头皮发麻,AI 计算筛选可以先把绝大多数死路挡在实验室门外。

▲ 论文报告的是离体细胞实验。它支撑化学重编程方向,尚未给“万亿筛选”盖上临床有效的印章。

如果这条路线走通,昂贵而复杂的基因递送可能被更易生产的小分子药物补充。眼下,候选物还要接受靶点确认、毒性、药代动力学等考验。那 200 个名字只是一份海选名单,距离药房货架还有许多轮淘汰。

走进人体的,是一套可控OSK开关

人体试验的源头可追到 2020 年 Nature 论文。Lu 等人在小鼠视网膜神经节细胞中表达 OCT4、SOX2、KLF4,也就是 OSK。实验恢复了更年轻的 DNA 甲基化模式与转录组,促进受损轴突再生,并改善青光眼模型及老年小鼠的视觉功能。

这套方法借用了“山中因子”,又拿掉了与致瘤风险密切相关的 c-Myc。部分重编程追求有限度回调细胞程序,让神经元继续做神经元。它像给运行多年的系统修复配置文件,重装系统的激进程度被刻意压低。

▲ 这篇 Nature 论文奠定了眼科转化的实验基础,研究对象仍是小鼠。

Life Biosciences 随后开发了 ER-100。改造后的腺相关病毒(AAV)把 OSK 遗传指令送入眼内,口服多西环素负责在约 56 天内诱导表达。局部给药能限制暴露范围,眼睛又有成熟的视力、视野和电生理测量工具,于是成了这场高风险实验最现实的起点。

ER-100 采用受控 OSK 基因疗法,与万亿分子筛选的化学药路线分属两条研发路径。这条分界线,决定了我们应该怎样理解“逆龄技术进入人体”。

首针已经落下,I期先问会不会伤人

2026 年 1 月,FDA 放行 ER-100 的研究性新药申请(IND)。ClinicalTrials.gov 登记的 NCT07290244 显示,研究处于招募状态,计划纳入约 18 名开角型青光眼(OAG)及非动脉炎性前部缺血性视神经病变(NAION)患者。受试者接受单眼单次给药,并进行长期随访。

▲ 注册页把主要问题写得很朴素:单次 ER-100 是否安全,会出现哪些副作用。

6 月 9 日,公司宣布首位受试者完成给药。这个节点确实重要:部分表观遗传重编程终于离开动物实验,开始在人类疾病中寻找安全窗口。FDA 只允许开展试验,尚未认定疗法有效,也未批准全身抗衰老产品。I 期首先观察安全性与耐受性,视觉功能信号属于附加评估。

▲ 公司公告确认首例给药;试验针对视神经病变,范围局限于一只眼睛。

这场试验聚焦一个很窄、也很重的问题:成熟的人类神经元被短暂调回年轻程序后,能否平安保住自己的身份。若安全窗口成立,视功能又出现可信信号,重编程才可能向更广的器官疾病迈步。

所以,2026 年最值得记住的画面,暂时还看不到白发老人突然返青。它是一根针进入患者眼球,背后连着小鼠论文、病毒载体和漫长随访。AI 已在万亿分子的黑暗里开灯;人体临床只向前挪了一小步恰恰是这一小步,第一次让“年龄信息能否修复”有机会接受真实的人体审判。

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  1. CONNECT:[ UseTime:0.000683s ] mysql:host=127.0.0.1;port=3306;dbname=wenku;charset=utf8mb4
  2. SHOW FULL COLUMNS FROM `fenlei` [ RunTime:0.000748s ]
  3. SELECT * FROM `fenlei` WHERE `fid` = 0 [ RunTime:0.000394s ]
  4. SELECT * FROM `fenlei` WHERE `fid` = 63 [ RunTime:0.000263s ]
  5. SHOW FULL COLUMNS FROM `set` [ RunTime:0.000695s ]
  6. SELECT * FROM `set` [ RunTime:0.000219s ]
  7. SHOW FULL COLUMNS FROM `article` [ RunTime:0.000671s ]
  8. SELECT * FROM `article` WHERE `id` = 918755 LIMIT 1 [ RunTime:0.001443s ]
  9. UPDATE `article` SET `lasttime` = 1786294759 WHERE `id` = 918755 [ RunTime:0.001929s ]
  10. SELECT * FROM `fenlei` WHERE `id` = 64 LIMIT 1 [ RunTime:0.000256s ]
  11. SELECT * FROM `article` WHERE `id` < 918755 ORDER BY `id` DESC LIMIT 1 [ RunTime:0.000436s ]
  12. SELECT * FROM `article` WHERE `id` > 918755 ORDER BY `id` ASC LIMIT 1 [ RunTime:0.000378s ]
  13. SELECT * FROM `article` WHERE `id` < 918755 ORDER BY `id` DESC LIMIT 10 [ RunTime:0.002102s ]
  14. SELECT * FROM `article` WHERE `id` < 918755 ORDER BY `id` DESC LIMIT 10,10 [ RunTime:0.002727s ]
  15. SELECT * FROM `article` WHERE `id` < 918755 ORDER BY `id` DESC LIMIT 20,10 [ RunTime:0.001802s ]
0.161089s