|
1
|
Liu S, Zhao S, Zhang C, Tian C, Wang D, Yu H, Li Z, Liu L, Liu N. Dppa3 Improves the Germline Competence of Pluripotent Stem Cells. Stem Cell Rev Rep 2023:10.1007/s12015-023-10552-y. [PMID: 37171679 DOI: 10.1007/s12015-023-10552-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 04/28/2023] [Indexed: 05/13/2023]
Abstract
BACKGROUND Chimera formation and germline competence are critical features of mouse pluripotent stem cells (PSCs). However, the factors that contribute to germline competence in the chimeras remain to be understood. METHODS To determine the role of Dppa3 in PSCs, we first constructed Dppa3 knockout (Dppa3 KO) and Dppa3 overexpression (Dppa3 OE) PSCs, respectively. Using Dppa3 KO and Dppa3 OE PSCs, we then investigated the role of Dppa3 in PSCs by evaluating the chimera generation, DNA methylation, and pluripotent state conversion. RESULTS We show that Dppa3 plays an important role in chimera formation and germline competence of mouse PSCs. PSC lines with high expression of Dppa3 show high germline competence. In contrast, Dppa3 deficiency reduces chimera formation and abrogates the germline transmission capacity of PSCs. Molecularly, Dppa3 facilitates establishing global DNA hypomethylation in PSCs. High levels of Dppa3 in PSCs reduce the expression of Dnmt3a/b and impede Uhrf1-Dnmt1 complex binding to DNA replication forks, maintaining DNA hypomethylation. Additionally, Dppa3 facilitates two-cell-stage (2C) genes expression and promotes conversion to a 2C-like state. CONCLUSION These data show that Dppa3 is involved in maintaining DNA hypomethylation homeostasis and is required for high chimera formation and germline competence of PSCs.
Collapse
Affiliation(s)
- Siying Liu
- School of Medicine, Nankai University, Tianjin, 300071, China
- Key Laboratory of Bioactive Materials, Ministry of Education, College of Life Sciences Nankai University, Tianjin, 300071, China
| | - Shuang Zhao
- School of Medicine, Nankai University, Tianjin, 300071, China
- College of Life Sciences, Nankai University, Tianjin, 300071, China
| | - Chuanyu Zhang
- School of Medicine, Nankai University, Tianjin, 300071, China
| | - Chenglei Tian
- College of Life Sciences, Nankai University, Tianjin, 300071, China
| | - Dan Wang
- School of Medicine, Nankai University, Tianjin, 300071, China
- MOE Key Laboratory of Protein Sciences, School of Life Sciences, Tsinghua University, Beijing, 100084, China
| | - Huaxin Yu
- School of Medicine, Nankai University, Tianjin, 300071, China
| | - Zongjin Li
- School of Medicine, Nankai University, Tianjin, 300071, China
| | - Lin Liu
- Key Laboratory of Bioactive Materials, Ministry of Education, College of Life Sciences Nankai University, Tianjin, 300071, China.
- College of Life Sciences, Nankai University, Tianjin, 300071, China.
| | - Na Liu
- School of Medicine, Nankai University, Tianjin, 300071, China.
- Key Laboratory of Bioactive Materials, Ministry of Education, College of Life Sciences Nankai University, Tianjin, 300071, China.
| |
Collapse
|
|
2
|
Abstract
Transgenic technology in rats is increasingly important for the design and implementation of biological and physiological studies in the fields of neuroscience, pharmacology, and toxicology. Pluripotent embryonic stem cells (ESCs) are a useful tool for generation of gene-modified rats. During the last decade, not only foreign DNA introduction but also endogenous DNA modification has been successfully achieved with rat ESCs. Detailed protocols for establishment of bona fide rat ESCs and their use for production of gene-modified rats are described in this chapter.
Collapse
|