Overlapping functions of Krüppel-like factor family members: targeting multiple transcription factors to maintain the naïve pluripotency of mouse embryonic stem cells

• DOI: 10.1242/dev.162404
• Publication Date: 2018-05-08T09:45:24Z
• Authors: Mariko Yamane; Satoshi Ohtsuka; Kumi Matsuura; Akira Nakamura; Hitoshi Niwa
• Keywords: Male; Mice, Knockout; Pluripotent Stem Cells; 0303 health sciences; Kruppel-Like Transcription Factors; Gene Expression Regulation, Developmental; Cell Differentiation; Mouse Embryonic Stem Cells; Mice, Inbred C57BL; Gene Knockout Techniques; Kruppel-Like Factor 4; Mice; 03 medical and health sciences; Animals; Cell Self Renewal; Cells, Cultured

ABSTRACT Krüppel-like factors (Klfs) have a pivotal role in maintaining self-renewal of mouse embryonic stem cells (mESCs). The functions of three Klf family members (Klf2, Klf4 and Klf5) have been identified, and are suggested to largely overlap. For further dissection of their functions, we applied an inducible knockout system for these Klf family members and assessed the effects of combinatorial loss of function. As a result, we confirmed that any one of Klf2, Klf4 and Klf5 was sufficient to support self-renewal, whereas the removal of all three compromised it. The activity of any single transcription factor, except for a Klf family member, was not sufficient to restore self-renewal of triple-knockout mESCs. However, some particular combinations of transcription factors were capable of the restoration. The triple-knockout mESCs were successfully captured at primed state. These data indicate that the pivotal function of a Klf family member is transduced into the activation of multiple transcription factors in a naïve-state-specific manner.