Insilico Medicine全球首次利用人工智能发现新机制特发性肺纤维化药物

2021-02-26 生物探索 生物探索

Insilico Medicine因全球首次利用人工智能发现新机制特发性肺纤维化药物,而在生物技术和药物发现领域揽获多项行业第一:

通过多次人体细胞和动物模型实验的成功验证,证明人工智能研发的新药物靶点和分子的有效性和安全性,今天的突破标志着业界首次对人工智能进行科学验证,并将其用于新药研发,直至候选化合物的临床前研究。

首次在新药研发过程中通过人工智能将生物学和化学结合:从历史上看,发现新靶点、设计新化合物,和通过临床前和临床研究验证其有效性的步骤是人工智能药物发现过程中不同的部分。

Insilico在临床前候选药物选择方面突破刷新了速度和最低成本的纪录—大大加快和推进临床前开发,同时节约了数百万美元的药物开发成本。

香港,上海— Insilico Medicine在人工智能和新药开发方面取得突破—首次将生物学和化学生成学相结合,发现一种全新机制的用于治疗特发性肺纤维化(IPF)的临床候选新药,并成功通过多次人类细胞和动物模型实验验证。IPF牵涉多种疾病,影响多个器官(肺、肝和肾),这一新药的出现有望解决影响全球成千上万人的广泛的未被满足的医疗需求。

IPF病因至今未明,医学界尚不清楚其发病机制,且该病多为散发,患者从出现症状到死亡,平均存活年限不超过5年。

广泛的肺纤维化容易并发肺癌,晚期也会出现肺动脉高压。现用于治疗IPF的药物已在临床使用30多年,仅对10%~30%的病人有疗效。患者在疾病晚期靠氧疗提高生存质量,但情况不容乐观。

Insilico Medicine创始人兼首席执行官Alex Zhavoronkov博士表示:“将正确的药物靶点与正确的疾病联系起来是药物研发的最大挑战”,“随着今天我们实现第一个人工智能发现和科学验证临床前候选药物(PCC)的里程碑,Insilico攻克了药物发现中的又一大障碍,并突破了传统药物发现过程中的另一瓶颈,这一过程花费了非常少的成本和时间。”

AI改写药物发现的历史

从靶点发现到临床前候选药物的发明,Insilico仅用时不到18个月,就实现了靶点发现、分子生成和通过传统实验验证,动物体内IPF疗效确认及安全性评估,总成本约为180万美元,其他纤维化疾病疗效研究总成本约为80万美元,合成和测试了不超过80个小分子化合物。

传统的药物发现首先是对数万个小分子进行测试筛选,然后进一步合成和测试数百个分子,以便得到少数几个适合临床前研究的候选药物,其中只有大约1/10的候选药物能够最终通过人类患者的临床试验。整个过程缓慢且成本昂贵,平均耗时10年,花费十数亿美元。

另一个进一步阻碍新药推向市场的障碍是,整个研发过程涉及的大量研发步骤—每一阶段花费数百至数千万美元—往往是由药物研发行业中不同公司或不同的业务部门分散进行的。

Zhavoronkov博士表示:“我们正在改写药物发现的历史,成为首个、也是唯一一个以人工智能为驱动的药物发现集成系统的开创者和领导者”,“通过创建首个通用系统,将药物开发的所有领域从靶点发现、小分子化合物设计以及将来的临床试验结果预测联系起来,Insilico的人工智能平台将能够支持药物研发的每一阶段的发展。

AI如何发现新机制特发性肺纤维化药物

Insilico Medicine从通过人工智能发现的20个与纤维化相关的全新潜在靶点开始研究,将适应症范围逐步缩小到专门针对IPF的一个新靶点。

靶点确定后,Insilico通过人工智能化学生成系统设计了一组新的化合物来选择性地抑制这个新靶点。这些分子必须具备良好的选择性、生物利用度、代谢稳定性、口服给药性质、安全性,及药物特有的多个优质属性。这些分子最初是由公司的生成化学人工智能系统Chemistry42其中的基于结构的分子设计算法产生的,并且显示在细胞实验和动物模型实验的有效性。

这些实验数据随后反馈给人工智能系统,人工智能再次设计新一批的化合物优化活性及成药性,并再次验证。

经过数轮设计-合成-评估-优化-重新设计循环后,目前已经确定了临床前候选化合物。Insilico的临床前候选化合物通过了公司内部和外部纤维化疾病领域专家的严格评估,已进入临床前研究阶段。

此外,公司还通过人工智能预测此IPF新靶点、新分子的二期临床试验成功机率很高。Insilico目前正在进行IND申报实验,目标是在2022年初进行临床研究。

Insilico欢迎和期待与制药公司合作,共同进行II期后的药物开发。

尽管围绕新药研发的热门话题通常集中在何时发现新靶点或何时新药进入临床试验,但目前最适合创新和对业务影响最大的领域是从靶点发现到临床开发之间。

开创历史的Insilico

2019年,Insilico开创了历史,它发明并推出了一种新的用于药物发现的人工智能系统,能够在21天从始至终创造出全新的分子,花费仅约15万美元。由于靶点发现的失败率约为95%,Insilico当时解决了该行业药物发现的最大瓶颈之一。Insilico的人工智能软件以利用现代人工智能技术的生成化学为驱动,能够快速生成具有特定性质的新型分子结构。

作为首家探索使用生成性对抗网络(GAN)和生成式强化学习(RL)人工智能技术进行药物发现的公司,Insilico的人工智能软件的成功是向业界展示首次成功发现和生成新的临床候选化合物的科学验证。

Zhavoronkov博士发言表示:

深度学习革命的巅峰可以追溯到2014年,那时出现了生成对抗网络,深度学习系统开始在图像识别领域超越人类。同年,公司成立。2016年,我们通过实验验证,深度学习系统可以从组学数据中识别新的生物靶点。自2017年-2019年,我们不断证明,生成式人工智能可以发明和设计在人类细胞和动物体内有活性的新分子。

但是还有一个大难题—人工智能能否为一个没有已知的抑制剂、也未在疾病中得到验证的新靶点设计出一种新的分子?现在,我们已经成功地将生物学和化学结合起来,并获得能够作用于一个新的靶点的临床前候选药物提名,目的是将其用于人类临床试验,这是一个亟待解决的、数量级更复杂、风险更大的难题。

据我所知,这是首例人工智能成功发现一个新靶点,并设计一个能够作用于大人群疾病适应症的临床前候选新药。这对我们来说是一个重要的里程碑。我们最终的‘登月计划’是解决人类的衰老问题,这需要我们拥有更多更可靠的人工智能技术,帮助我们理解和调控其他慢性疾病中的人类生物学。

此外,Insilico将获得巨额资金支持,用于在多种新药物靶点上开展药物发现和开发。公司已经利用自主研发的Pharma.AI软件,为制药和生物技术公司提供靶点发现和生成化学系统服务和支持。PandaOmics靶点发现AI系统可作为软件服务提供,Chemistry42小分子生成化学平台已于2020年9月开始在药企用户现场安装和部署。迄今为止,全球最先进的制药公司已开始采用我司的Chemistry42分子生成和设计平台,PandaOmics则在多个著名学术机构和制药公司的药物靶点发现部门采用。

Insilico同时宣布,公司将继续壮大科研队伍,已经在上海建立了一支由20多位资深药物研发人员组成的团队,由首席科学官(CSO)任峰博士领导,他于今年2月加入Insilico。此前相继担任美迪西生物医药公司生物部和化学部高级副总裁、GSK葛兰素史克公司化学总监。该团队负责将人工智能发现的新药项目推进到临床试验,并创建广泛的临床前/临床药物产品组合。

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    2021-10-15 jeanqiuqiu
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    2021-12-24 kalseyzl
  4. [GetPortalCommentsPageByObjectIdResponse(id=1859119, encodeId=93b018591199b, content=<a href='/topic/show?id=e0a9593596' target=_blank style='color:#2F92EE;'>#DIC#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=18, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=5935, encryptionId=e0a9593596, topicName=DIC)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=6f7770, createdName=jeanqiuqiu, createdTime=Fri Oct 15 21:16:36 CST 2021, time=2021-10-15, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1894796, encodeId=c4ee1894e96d5, content=<a href='/topic/show?id=e45b6e859f3' target=_blank style='color:#2F92EE;'>#特发性#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=21, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=67859, encryptionId=e45b6e859f3, topicName=特发性)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=74808, createdName=xinxin088, createdTime=Wed Apr 07 01:16:36 CST 2021, time=2021-04-07, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1773923, encodeId=ec661e7392351, content=<a href='/topic/show?id=5f014e1852' target=_blank style='color:#2F92EE;'>#CIN#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=27, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=4718, encryptionId=5f014e1852, topicName=CIN)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=a9a038523631, createdName=kalseyzl, createdTime=Fri Dec 24 04:16:36 CST 2021, time=2021-12-24, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1577778, encodeId=519915e777875, content=<a href='/topic/show?id=cda91148004' target=_blank style='color:#2F92EE;'>#Medicine#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=21, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=11480, encryptionId=cda91148004, topicName=Medicine)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=54cd16396700, createdName=ms1692212821629096, createdTime=Sun Feb 28 00:16:36 CST 2021, time=2021-02-28, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1610927, encodeId=24ad161092ea2, content=<a href='/topic/show?id=eb6b1145939' target=_blank style='color:#2F92EE;'>#Med#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=26, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=11459, encryptionId=eb6b1145939, topicName=Med)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=552a19396740, createdName=ms3994565386320060, createdTime=Sun Feb 28 00:16:36 CST 2021, time=2021-02-28, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1039388, encodeId=a8ba10393885a, content=机制研究离临床仍然有距离,不过与临床结合思考,仍然有帮助的,不能仅仅是纯临床思维,转化思维同样重要, beContent=null, objectType=article, channel=null, level=null, likeNumber=41, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=f0620, createdName=肿肿, createdTime=Fri Feb 26 12:16:36 CST 2021, time=2021-02-26, status=1, ipAttribution=)]
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    2021-02-26 肿肿

    机制研究离临床仍然有距离,不过与临床结合思考,仍然有帮助的,不能仅仅是纯临床思维,转化思维同样重要

    0

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