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Deciphering the Molecular Foundations and Functional Competence of Alternative Human Naïve Pluripotent Stem Cells


An important goal of stem cell therapy is to create “customized” cells that are genetically identical to the patient, which upon transplantation can restore damaged tissues. Such cells can be obtained by in vitro direct reprogramming of somatic cells into embryonic stem (ES)-like cells, termed induced pluripotent stem cells (iPSC). This approach also opens possibilities for modelling human diseases in vitro. However, major hurdles remain that restrain fulfilling conventional human iPSC/ESC potential, as they reside in an advanced primed pluripotent state. Such hurdles include limited differentiation capacity and functional variability. Further, in vitro iPSC based research platforms are simplistic and iPSC based “humanized” chimeric mouse models may be of great benefit.
The recent isolation of distinct and new “mouse-like” naive pluripotent states in humans that correspond to earlier embryonic developmental state(s), constitutes a paradigm shift and may alleviate limitations of conventional primed iPSCs/ESCs. Thus, our proposal aims at dissecting the human naïve pluripotent state(s) and to unveil pathways that facilitate their unique identity and flexible programming.
Specific goals: 1) Transcriptional and Epigenetic Design Principles of Human Naïve Pluripotency 2) Signalling Principles Governing Human Naïve Pluripotency Maintenance and Differentiation 3) Defining Functional Competence and Safety of Human Naïve Pluripotent Stem Cells in vitro 4) Novel human naïve iPSC based cross-species chimeric mice for studying human differentiation and disease modelling in vivo. These aims will be conducted by utilizing engineered human iPSC/ESC models, CRISPR/Cas9 genome-wide screening, advanced microscopy and ex-vivo whole embryo culture methods. Our goals will synergistically lead to the design of strategies that will accelerate the safe medical application of human naive pluripotent stem cells and their use in disease specific modelling and applied stem cell research.

Host institution

Net EU contribution
€ 2 000 000,00
7610001 Rehovot

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Activity type
Higher or Secondary Education Establishments
Total cost
€ 2 000 000,00

Beneficiaries (1)