Transcriptional dynamics of transposable elements when converting fibroblast cells of Macaca mulatta to neuroepithelial stem cells

BMC Genomics

Shipeng Li¹  Nan Zhou¹  Kui Duan¹  Zhigang Zhao²  Dahai Liu³  Yun Zheng⁴  Li Liu⁴  Junqiang Guo⁴  Xiaotuo Zhang⁴ 

[1] Institute of Primate Translational Medicine, Kunming University of Science and Technology;Faculty of Information Engineering and Automation, Kunming University of Science and Technology;Foshan Stomatology Hospital and School of Medicine, Foshan University;State Key Laboratory of Primate Biomedical Research;

关键词: Transposable element (TE);    Endogenous retrovirus (ERV);    Long terminal repeat (LTR);    Transcription;    Fibroblast;    Induced pluripotent stem cell (iPSC);   

DOI  :  10.1186/s12864-021-07717-9

来源: DOAJ

【 摘 要 】

Abstract Background Transposable elements (TE) account for more than 50% of human genome. It has been reported that some types of TEs are dynamically regulated in the reprogramming of human cell lines. However, it is largely unknown whether some TEs in Macaca mulatta are also regulated during the reprogramming of cell lines of monkey. Results Here, we systematically examined the transcriptional activities of TEs during the conversion of Macaca mulatta fibroblast cells to neuroepithelial stem cells (NESCs). Hundreds of TEs were dynamically regulated during the reprogramming of Macaca mulatta fibroblast cells. Furthermore, 48 Long Terminal Repeats (LTRs), as well as some integrase elements, of Macaca endogenous retrovirus 3 (MacERV3) were transiently activated during the early stages of the conversion process, some of which were further confirmed with PCR experiments. These LTRs were potentially bound by critical transcription factors for reprogramming, such as KLF4 and ETV5. Conclusion These results suggest that the transcription of TEs are delicately regulated during the reprogramming of Macaca mulatta fibroblast cells. Although the family of ERVs activated during the reprogramming of fibroblast cells in Macaca mulatta is different from those in the reprogramming of human fibroblast cells, our results suggest that the activation of some ERVs is a conserved mechanism in primates for converting fibroblast cells to stem cells.

【 授权许可】

Unknown