Modeling colorectal tumorigenesis using the organoids derived from conditionally immortalized mouse intestinal crypt cells (ciMICs)
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Modeling colorectal tumorigenesis using the organoids derived from conditionally immortalized mouse intestinal crypt cells (ciMICs)
Genes & DiseasesVol. 8, Issue 6, (2021)
作者机构:
1. Departments of Gastrointestinal Surgery, Medicine/Gastroenterology, and Obstetrics and Gynecology, The First Affiliated Hospital of Chongqing Medical University,Chongqing,PR China,400016
2. Molecular Oncology Laboratory, Department of Orthopaedic Surgery and Rehabilitation Medicine, The University of Chicago Medical Center,IL,Chicago,USA,606037
3. Department of Oncology, The PLA Rocket Force Characteristic Medical Center,Beijing,PR China,100088
4. Departments of Burn & Plastic Surgery, West China Hospital of Sichuan University,Sichuan Province,Chengdu,PR China,610041
5. Department of Orthopaedic Surgery, The First Affiliated Hospital of Guangzhou University of Chinese Medicine,Guangdong Province,Guangzhou,PR China,510405
6. Departments of Orthopaedic Surgery, The Affiliated Zhongnan Hospital of Wuhan University,Hubei Province,Wuhan,PR China,430071
7. Department of Orthopaedic Surgery, The Affiliated Hospital of Qingdao University,Shandong Province,Qingdao,PR China,266000
8. Department of Clinical Laboratory Medicine, Chongqing General Hospital Affiliated with the University of Chinese Academy of Sciences,Chongqing,PR China,400013
9. Ministry of Education Key Laboratory of Diagnostic Medicine, and the School of Laboratory Diagnostic Medicine, Chongqing Medical University,Chongqing,PR China,400016
10. Department of Orthopaedics, Union Hospital of Tongji Medical College, Huazhong University of Science and Technology,Hubei Province,Wuhan,PR China,430022
11. Department of Spine Surgery, Second Xiangya Hospital, Central South University,Hunan Province,Changsha,PR China,410008
Xiaoxing Wu, Zhaoxia Li, Hongyu Zhang, et al. Modeling colorectal tumorigenesis using the organoids derived from conditionally immortalized mouse intestinal crypt cells (ciMICs). [J]. Genes & Diseases 8(6).(2021)
DOI:
Xiaoxing Wu, Zhaoxia Li, Hongyu Zhang, et al. Modeling colorectal tumorigenesis using the organoids derived from conditionally immortalized mouse intestinal crypt cells (ciMICs). [J]. Genes & Diseases 8(6).(2021) DOI: 10.1016/j.gendis.2021.01.004.
Modeling colorectal tumorigenesis using the organoids derived from conditionally immortalized mouse intestinal crypt cells (ciMICs)
摘要
Abstract
Intestinal cancers are developed from intestinal epithelial stem cells (ISCs) in intestinal crypts through a multi-step process involved in genetic mutations of oncogenes and tumor suppressor genes. ISCs play a key role in maintaining the homeostasis of gut epithelium. In 2009
Sato et al established a three-dimensional culture system
which mimicked the niche microenvironment by employing the niche factors
and successfully grew crypt ISCs into organoids or Mini-guts
in vitro
. Since then
the intestinal organoid technology has been used to delineate cellular signaling in ISC biology. However
the cultured organoids consist of heterogeneous cell populations
and it was technically challenging to introduce genomic changes into three-dimensional organoids. Thus
there was a technical necessity to develop a two-dimensional ISC culture system for effective genomic manipulations. In this study
we established a conditionally immortalized mouse intestinal crypt (ciMIC) cell line by using a
piggyBac
transposon-based SV40 T antigen expression system. We showed that the ciMICs maintained long-term proliferative activity under two-dimensional niche factor-containing culture condition
retained the biological characteristics of intestinal epithelial stem cells
and could form intestinal organoids in three-dimensional culture. While
in vivo
cell implantation tests indicated that the ciMICs were non-tumorigenic
the ciMICs overexpressing oncogenic β-catenin and/or KRAS exhibited high proliferative activity and developed intestinal adenoma-like pathological features
in vivo
. Collectively
these findings strongly suggested that the engineered ciMICs should be used as a valuable tool cell line to dissect the genetic and/or epigenetic underpinnings of intestinal tumorigenesis.
关键词
Keywords
Cancer modelingConditional immortalizationMini-gut organoidsMouse intestinal crypt (MIC) cellsTumorigenesis
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