Saiki Norikazu, Nio Yasunori, Yoneyama Yosuke, Kawamura Shuntaro, Iwasawa Kentaro, Kawakami Eri, Araki Kohei, Fukumura Junko, Sakairi Tsuyoshi, Kono Tamaki, Ohmura Rio, Koido Masaru, Funata Masaaki, Thompson Wendy L, Cruz-Encarnacion Pamela, Chen Ya-Wen, Takebe Takanori
Human Biology Research Unit, Institute of Integrated Research, Institute of Science Tokyo, Yushima, Bunkyo-ku, Tokyo, Japan.
Organoid Medicine Project, T-CiRA Joint Program, Fujisawa, Japan.
Nat Biomed Eng. 2025 Jun 25. doi: 10.1038/s41551-025-01416-6.
The induction of tissue-specific vessels in in vitro living tissue systems remains challenging. Here, we directly differentiated human pluripotent stem cells into CD32b putative liver sinusoidal progenitors by dictating developmental pathways. By devising an inverted multilayered air-liquid interface culture, hepatic endoderm, septum mesenchyme, arterial and sinusoidal quadruple progenitors self-organize to generate and sustain hepatocyte-like cells neighboured by divergent endothelial subsets composed of CD32bCD31, LYVE1STAB1CD32bCD31THBDvWF and LYVE1THBDvWF cells. WNT2 mediates sinusoidal-to-hepatic intercellular crosstalk potentiating hepatocyte differentiation and branched endothelial network formation. Intravital imaging reveals the iPS-cell-derived putative liver sinusoidal endothelial progenitor develops fully perfused human vessels with functional sinusoid-like features. Organoid-derived hepatocyte- and sinusoid-derived coagulation factors enable correction of in vitro clotting time with Factor V-, VIII-, IX- and XI-deficient plasma, and rescues the severe bleeding phenotype in haemophilia A mice on transplantation. Advanced organoid vascularization technology allows for interrogating key insights governing organ-specific vessel development, paving the way for coagulation disorder therapeutics.
在体外活组织系统中诱导组织特异性血管仍然具有挑战性。在这里,我们通过控制发育途径将人多能干细胞直接分化为CD32b假定肝窦祖细胞。通过设计一种倒置的多层气液界面培养,肝内胚层、中隔间充质、动脉和窦状四重祖细胞自我组织,以生成并维持由CD32bCD31、LYVE1STAB1CD32bCD31THBDvWF和LYVE1THBDvWF细胞组成的不同内皮亚群相邻的肝细胞样细胞。WNT2介导窦状到肝的细胞间串扰,增强肝细胞分化和分支内皮网络形成。活体成像显示,诱导多能干细胞衍生的假定肝窦内皮祖细胞发育出具有功能性窦状样特征的完全灌注的人体血管。类器官衍生的肝细胞和窦状衍生的凝血因子能够用缺乏因子V、VIII、IX和XI的血浆校正体外凝血时间,并在移植时挽救血友病A小鼠的严重出血表型。先进的类器官血管化技术有助于探究控制器官特异性血管发育的关键见解,为凝血障碍治疗铺平道路。