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Generation of Mice Derived from Induced Pluripotent Stem Cells
Published on: November 29, 2012
Generation of CD44 gene-deficient mouse derived induced pluripotent stem cells: CD44 gene-deficient iPSCs
Zhenwei Song1, Qianqian Ji, Haijing Zhao
1State Key Laboratory of Biocontrol, School of Life Sciences, Sun Yat-sen University, Higher Education Mega Center, Guangzhou, 510006, People's Republic of China, gactu@163.com.
Abstract:
Induced pluripotent stem cells (iPSCs) show good promise for the treatment of defects caused by numerous genetic diseases. Herein, we successfully generated CD44 gene-deficient iPSCs using Oct4, Sox2, Klf4, and vitamin C. The generated iPSCs displayed a characteristic morphology similar to the well-characterized embryonic stem cells. Alkaline phosphatase, cell surface (SSEA1, NANOG, and OCT4), and pluripotency markers were expressed at high levels in these cells. The iPSCs formed teratomas in vivo and supported full-term development of constructed porcine embryos by inter-species nuclear transplantation. Importantly, incubation with trichostatin A increased the efficiency of iPSCs generation by increasing the histone acetylation levels. Moreover, more iPSCs colonies appeared following cell passaging during colony picking, thus increasing the effectiveness of iPSCs selection. Thus, our work provides essential stem cell materials for the treatment of genetic diseases and proposes a novel strategy to enhance the efficiency of induced reprogramming.
Insights
Researchers generated CD44 gene-deficient induced pluripotent stem cells (iPSCs) for genetic disease treatment. This study enhances iPSC generation efficiency using trichostatin A and improved selection methods.
Area of Science:
- Stem Cell Biology
- Regenerative Medicine
- Genetic Engineering
Background:
- Induced pluripotent stem cells (iPSCs) offer potential for treating genetic diseases.
- Efficient generation and selection of iPSCs are crucial for therapeutic applications.
Purpose of the Study:
- To generate CD44 gene-deficient iPSCs for potential genetic disease therapies.
- To enhance the efficiency of induced reprogramming and iPSC selection.
Main Methods:
- Generation of iPSCs using Oct4, Sox2, Klf4, and vitamin C.
- Characterization of iPSCs for pluripotency markers (AP, SSEA1, NANOG, OCT4).
- In vivo teratoma formation and inter-species nuclear transplantation for developmental potential assessment.
- Enhancement of reprogramming efficiency using trichostatin A and improved colony picking strategies.
Main Results:
- Successfully generated CD44 gene-deficient iPSCs with embryonic stem cell-like morphology.
- Confirmed high expression of pluripotency markers and successful teratoma formation.
- Demonstrated full-term development of porcine embryos via inter-species nuclear transplantation.
- Showed increased iPSC generation efficiency with trichostatin A and enhanced selection post-passaging.
Conclusions:
- Generated functional CD44-deficient iPSCs, providing valuable material for genetic disease research.
- Developed a novel strategy to improve induced reprogramming efficiency through histone acetylation modulation and optimized selection.
- The findings support the therapeutic potential of iPSCs and offer a scalable method for their generation.
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