1. Creation of bladder assembloids mimicking tissue regeneration and cancer
- Author
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Woong Hee Yoon, Sanguk Kim, Hwa Rim Lee, Sungjune Jung, Sungeun Kim, Hyo Min Kim, Hye Sun Lee, Yubin Kim, Seoyoung Choi, Tae-Young Roh, Byunghee Kang, Kunyoo Shin, Jungho Kong, Chorong Yang, Minyong Kang, Eunjee Kim, Ja Hyeon Ku, and You Jeong Lee
- Subjects
0301 basic medicine ,Multidisciplinary ,Stromal cell ,Biology ,Bone morphogenetic protein ,Epithelium ,Cell biology ,03 medical and health sciences ,030104 developmental biology ,0302 clinical medicine ,medicine.anatomical_structure ,Stroma ,030220 oncology & carcinogenesis ,medicine ,FOXA1 ,Stem cell ,Reprogramming ,Adult stem cell - Abstract
Current organoid models are limited by their inability to mimic mature organ architecture and associated tissue microenvironments1,2. Here we create multilayer bladder ‘assembloids’ by reconstituting tissue stem cells with stromal components to represent an organized architecture with an epithelium surrounding stroma and an outer muscle layer. These assembloids exhibit characteristics of mature adult bladders in cell composition and gene expression at the single-cell transcriptome level, and recapitulate in vivo tissue dynamics of regenerative responses to injury. We also develop malignant counterpart tumour assembloids to recapitulate the in vivo pathophysiological features of urothelial carcinoma. Using the genetically manipulated tumour-assembloid platform, we identify tumoural FOXA1, induced by stromal bone morphogenetic protein (BMP), as a master pioneer factor that drives enhancer reprogramming for the determination of tumour phenotype, suggesting the importance of the FOXA1–BMP–hedgehog signalling feedback axis between tumour and stroma in the control of tumour plasticity. Multilayer 3D reconstitution of bladder stem cells with stromal cells enables recapitulation of the architecture and molecular functions of bladder tissue.
- Published
- 2020