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3297 人阅读发布时间:2024-04-29 19:43





一、专业化的硬件(控制单元)
主机(控制单元)是一个紧凑的台式设备,能够模拟人体内生理环境,包括温度、压力、真空度、微流道循环频率、时间等参数。
7寸触摸显示器,控制面板可以在整个过程中对每个多器官芯片分别进行调节,无需外接电脑,软件操控友好;
可以自主设置每个器官芯片的培养条件,包括温度、压力、真空度、微流道循环频率、时间等参数;
可串联培养2个不同(或相同)、3个不同的、4个不同的类器官;
3个连接拓展口,用于连接其他设备;
同时操控高达8个Chip3 / Chip3 plus,4个Chip2 /Chip4或这些的组合;


二、类器官芯片
芯片有不同的微流道设计,针对不同的器官可以单独设置提供相应的培养条件,提供精准的培养和分化环境;
芯片的泵腔内的柔性膜通过连接的管道,受到压力或真空的作用,在微流道之中产生脉动体流;
二联类器官芯片可以在一个芯片上串联培养2个不同(或相同)的类器官;
三联类器官芯片可以在一个芯片上串联培养3个不同的类器官;
四联类器官芯片可以在一个芯片上串联培养4个不同的类器官;

三、服务方案(细胞、试剂,诱导方案)



四、器官模型和串联培养技术







类器官串联培养系统---HUMIMIC的应用案例
1、神经球和肝脏的串联共培养(柏林工业大学)-二联器官共培养的药物敏感性
2015, Journal of Biotechnology,
A multi-organ chip co-culture of neurospheres and liver equivalents for long-term substance testing
目前用于药物开发的体外实验平台无法模拟人体器官的复杂性,而人类和实验室动物的系统差异巨大,因此现有的方案都不能准确预测药物的安全性和有效性。德国、葡萄牙和俄罗斯的研究团队通过TissUse GmbH公司的微流控多器官芯片(MOC)平台,测试毒物对多器官的作用,揭示了基于微流控的多器官串联共培养能够更好的模拟人体的生理学环境。在体外培养条件下,由于氧气和营养供应有限,类器官培养往往会随着时间的推移而去分化。然而微流控系统中通过持续灌注培养基,更好地控制环境条件,如清除分泌物和刺激因子,并且培养基以可控流速通过,以模拟血流产生的生物剪切应力,因此类器官培养物可以保持良好的生长状态。

双器官串联芯片(2-OC)能够串联共培养人的神经球(NT2细胞系)和肝脏类器官(肝HepaRG细胞和肝HHSteC细胞)。在持续两周的实验中,反复加入神经毒剂2,5-己二酮,引起神经球和肝脏的细胞凋亡。跟单器官培养相比,串联共培养对毒剂更敏感。因此,多器官串联共培养在临床研究中可以更准确地预测药物的安全性和有效性。推测这是因为一个类器官的凋亡信号导致了第二个类器官对药物反应的增强,这一推测得到了实验结果的支持,即串联共培养的敏感性增加主要发生在较低浓度药物中。

2、心脏肝脏骨骼皮肤的串联共培养(哥伦比亚大学)-四联器官共培养的复杂通讯模型
哥伦比亚大学的科学家也开发了一种多器官串联芯片,建立了串联共培养心脏、肝脏、骨骼、皮肤的技术,发表于2022年的Nature Biomedical Engineering,中通过血液循环串联培养4个类器官,保持了各个类器官的表型,还研究了常见的抗癌药阿霉素对串联芯片中的类器官以及血管的影响。结果显示药物对串联共培养类器官的影响与临床研究结果非常相似,证明了多器官串联共培养能够成功的模拟人体中的药代动力学和药效学特征。
“最值得注意的是,多器官串联芯片能够准确的预测出阿霉素的心脏毒性和心肌病,这意味着,临床医生可以减少阿霉素的治疗剂量,甚至让患者停止该治疗方案。“
Gordana Vunjak-Novakovic, Department of Biomedical Engineering, Columbia University

3、胰岛和肝脏在芯片上的串联共培养(阿斯利康)-二联器官共培养的反馈通讯
2017, Nature Scientific Reports,
Functional coupling of human pancreatic islets and liver spheroids on-a-chip: Towards a novel human ex vivo type 2 diabetes model
人类系统性疾病的发生过程都是通过破坏两个或多个器官的自我平衡和相互交流。研究疾病和药疗就需要复杂的多器官平台作为体外生理模型的工具,以确定新的药物靶点和治疗方法。2型糖尿病(T2DM)的发病率正在不断上升,并与多器官并发症相关联。由于胰岛素抵抗,胰岛通过增加分泌和增大胰岛体积来满足胰岛素不断增加的需求量。当胰岛无法适应机体要求时,血糖水平就会升高,并出现明显的2型糖尿病。由于胰岛素是肝脏代谢的关键调节因子,可以将生产葡萄糖的平衡转变为有利于葡萄糖的储存,因此胰岛素抵抗会导致糖稳态受损,从而导致2型糖尿病。过去已经报道了多种表征T2DM特征的动物模型,但是,从动物实验进行的研究往临床上转化的效果不佳。更重要的是,目前使用的药物,虽然能缓解糖尿病症状,但对疾病进一步发展的治疗效果有限。
胰腺和肝脏是参与维持葡萄糖稳态的两个关键器官,为了模拟T2DM,阿斯利康(AstraZeneca)的科学家利用TissUse GmbH公司的微流控多器官芯片(MOC)平台,通过微流控通道相互连接,建立一个双器官串联芯片(2-OC)模型,实现芯片上胰腺和肝脏类器官的串联共培养,在体外模拟了胰腺和肝脏之间的交流通讯。

建立串联共培养类器官(胰岛+肝脏)和单独培养类器官(仅胰岛或肝脏),在培养基中连续培养15天,串联共培养显示出稳定、重复、循环的胰岛素水平。而胰岛单独培养的胰岛素水平不稳定,从第3天到第15天,降低了49%。胰岛与肝球体串联共培养中,胰岛可长期维持葡萄糖水平,刺激胰岛素分泌,而单独培养的胰岛,胰岛素分泌显著减少。胰岛分泌的胰岛素促进了肝球体对葡萄糖的利用,显示了串联共培养中类器官之间的功能性交流。在单独培养中的肝球体中,15天内循环葡萄糖浓度稳定维持在~11 mM。而与胰岛共培养时,肝球体的循环葡萄糖在48小时内降低到相当于人正常餐后的水平度,表明胰岛类器官分泌的胰岛素刺激了肝球体摄取葡萄糖。

4、肺肿瘤和皮肤在芯片上的串联共培养(拜耳)-抗体药物对肿瘤和正常器官的影响
针对EGFR抗体的药物在癌症治疗中被广泛应用。然而,抗癌药物的使用量与皮肤不良反应成正比相关,皮肤毒性是上皮生长因子受体(EGFR) 靶向治疗中最常见的副作用。但是对于后者的预测目前的方法均无法实现。
双器官串联芯片(2-OC)模型,实现芯片上皮肤和肿瘤的共培养,用于模拟重复给药的剂量实验,同时还生成安全性和有效性的数据,可以在非常早的阶段检测到西妥昔单抗cetuximab对皮肤的几个关键副作用。这种体外分析能够在临床表现之前预评估毒性副作用,可以替代动物试验,有望成为评价EGFR抗体和其他肿瘤药物治疗指数的理想工具。

5、皮肤-肝脏在芯片上的串联共培养(拜尔斯道夫公司)—评估化妆品不同的给药途径
一种独特的基于芯片的组织培养平台已经开发出来,使化妆品和药物对一套微型人体器官的影响测试成为可能。这种“人-片”平台旨在生成可复制的、高质量的人体物质安全性预测体外数据。被测物质进入表皮或在表皮内代谢,然后泵入肝脏并激活相应的CYPs。因此,在肝脏和皮肤的联合培养中,多器官芯片是一种有前途的体外方法,用于全身和局部剂量的化妆品和药物。

皮肤等效物的培养整合在一个系统中。芯片上的微泵使代谢运输和附加的生理剪切应力成为可能。肝脏和皮肤等效物存活10天,并显示紧密连接和特异性转运蛋白的表达。每天服用咖啡因、维甲酸和倍他米松-21-戊酸,持续7天,以研究已知可被皮肤和肝脏代谢的化合物的作用。将表面敷于表皮的效果与直接敷于培养基的效果进行比较,分析对皮肤渗透和代谢的影响。对肝脏和皮肤等价物进行代谢酶、转运体、分化标记物的表达和活性分析。结果显示,在蛋白水平和mRNA水平上,根据不同物质处理,ⅰ、ⅱ期酶均有本构性和诱导性表达。因此,在肝脏和皮肤的联合培养中,多器官芯片是一种有前途的体外方法,用于全身和局部剂量的药物和化妆品。

6、肺类器官在芯片上的培养(菲莫国际)-空气环境对呼吸道的影响
使用类人肺模型研究吸入气溶胶的沉积和吸附,从而使体外人体呼吸毒性的数据更加准确和可预测。目前的体外气溶胶暴露系统通常不能模拟这些特性,这可能导致在体外生物测试系统中交付非现实的、非人体相关的可吸入试验物质剂量。模拟和研究体外气溶胶暴露装置-吸入器可主动呼吸、操作医用吸入器,或吸吸烟草制品。此外,它可以填充从人类呼吸道不同区域分离的三维上皮细胞。包括口腔、支气管和肺泡细胞培养物的气溶胶传递和相容性的概念的研究,将其应用于测试系统,吸入产生的生理条件下,测试表现在人的呼吸道的方式。这种方法的优点是,它无需花费昂贵、耗时和具有科学挑战性的工作来确定体内提供的剂量,默认情况下,适用于任何测试烟草燃烧产生的气体和任何测试成分。
此外,通过功能和结构上培养人的呼吸道器官模型,该系统消除了在处理呼吸道不同区域时重复暴露与吸烟环境,并能够测试任何相关的呼吸模式或行为。由于该系统能够自行产生或取样测试气溶胶,且其方式与人类呼吸道的做法高度相似,因此消除了在外部测试大气产生或取样过程中引入实验人工制品的风险。
通过建立类器官培养和鉴定平台,培养人肺类器官模型,研究烟草(包括电子烟)燃烧后的气体对人体内健康的影响,从而领导烟草行业的一场技术变革,以创造一个无害烟的未来,并最终以无害烟产品取代香烟,从而造福于那些原本会继续吸烟的成年人、社会、公司。
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