1
|
Sato S, Kikuchi T, Nishimura Y, Yugami Y, Sakuraoka M, Kita Y, Fukuda T, Kobayashi M. Generation of mouse iPS cells using an inducible expression of transgenes via the cumate gene-switch. Anal Biochem 2020; 599:113748. [PMID: 32333903 DOI: 10.1016/j.ab.2020.113748] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2020] [Revised: 03/14/2020] [Accepted: 04/18/2020] [Indexed: 11/19/2022]
Abstract
We applied an inducible gene expression system that utilizes the p-cmt operon, the cumate gene-switch, to generate mouse induced pluripotent stem (iPS) cells. Mouse embryonic fibroblast (MEF) E6E7-MEF cells were transfected with a single cumate gene-switch vector enabling concomitant expression of Oct4, Sox2, c-Myc, Klf4, and Gfp. Then, the cells were cultured with cumate, a monoterpene. An increase in colonies positive for alkaline phosphatase activity was observed dose-dependently with cumate. In the absence of cumate, the expression of GFP, a marker for transgene expression, was undetectable in tightly aggregated iPS cell-like colonies with endogenous expression of NANOG and OCT4. From primary MEFs using the cumate gene-switch, we also isolated iPS cells expressing endogenous NANOG, OCT4, SOX2, KLF4, and SSEA1 with hypo-methylated genomic promoter regions of endogenous Nanog and Oct4. In embryoid bodies with the progression of differentiation, expression of markers for all three germ layers was detected, and contracting cardiomyocytes were observed. Overall, we suggest that the cumate gene-switch is applicable for the generation of mouse iPS cells. The cumate gene-switch in combination with other inducible systems, such as the tet system, may provide useful approaches for analyzing the roles of transgenes underlying the establishment of iPS cells.
Collapse
Affiliation(s)
- Suguru Sato
- Graduate School of Bioresource Sciences, Akita Prefectural University, 241-438 Kaidoh-batanishi, Shimoshinjho Nakano, Akita 010-0195, Japan
| | - Takahiro Kikuchi
- Graduate School of Bioresource Sciences, Akita Prefectural University, 241-438 Kaidoh-batanishi, Shimoshinjho Nakano, Akita 010-0195, Japan
| | - Yuka Nishimura
- Graduate School of Bioresource Sciences, Akita Prefectural University, 241-438 Kaidoh-batanishi, Shimoshinjho Nakano, Akita 010-0195, Japan
| | - Yoshimi Yugami
- Graduate School of Bioresource Sciences, Akita Prefectural University, 241-438 Kaidoh-batanishi, Shimoshinjho Nakano, Akita 010-0195, Japan
| | - Mizuki Sakuraoka
- Graduate School of Bioresource Sciences, Akita Prefectural University, 241-438 Kaidoh-batanishi, Shimoshinjho Nakano, Akita 010-0195, Japan
| | - Yuto Kita
- Graduate School of Bioresource Sciences, Akita Prefectural University, 241-438 Kaidoh-batanishi, Shimoshinjho Nakano, Akita 010-0195, Japan
| | - Tomokazu Fukuda
- Graduate School of Science and Engineering, Iwate University, 4-3-5 Ueda, Morioka 020-8551, Japan
| | - Masayuki Kobayashi
- Graduate School of Bioresource Sciences, Akita Prefectural University, 241-438 Kaidoh-batanishi, Shimoshinjho Nakano, Akita 010-0195, Japan.
| |
Collapse
|
2
|
Kumagai Y, Kikuchi T, Nonaka A, Hiraide M, Sato S, Sakuraoka M, Sasaki A, Kobayashi M. Site-directed mutagenesis of cysteine to serine residues affects heparin binding and mitogenicity in fibroblast growth factor 4 produced in Escherichia coli. BIOTECHNOL BIOTEC EQ 2019. [DOI: 10.1080/13102818.2019.1590161] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022] Open
Affiliation(s)
- Yuki Kumagai
- Laboratory for Advanced Animal Cell Technology, Graduate School of Bioresource Sciences, Akita Prefectural University, Akita, Japan
| | - Takahiro Kikuchi
- Laboratory for Advanced Animal Cell Technology, Graduate School of Bioresource Sciences, Akita Prefectural University, Akita, Japan
| | - Asumi Nonaka
- Laboratory for Advanced Animal Cell Technology, Graduate School of Bioresource Sciences, Akita Prefectural University, Akita, Japan
| | - Misuzu Hiraide
- Laboratory for Advanced Animal Cell Technology, Graduate School of Bioresource Sciences, Akita Prefectural University, Akita, Japan
| | - Suguru Sato
- Laboratory for Advanced Animal Cell Technology, Graduate School of Bioresource Sciences, Akita Prefectural University, Akita, Japan
| | - Mizuki Sakuraoka
- Laboratory for Advanced Animal Cell Technology, Graduate School of Bioresource Sciences, Akita Prefectural University, Akita, Japan
| | - Akira Sasaki
- Laboratory for Advanced Animal Cell Technology, Graduate School of Bioresource Sciences, Akita Prefectural University, Akita, Japan
- Akita Research Institute of Food and Brewing, Akita, Japan
| | - Masayuki Kobayashi
- Laboratory for Advanced Animal Cell Technology, Graduate School of Bioresource Sciences, Akita Prefectural University, Akita, Japan
| |
Collapse
|