Protocol Optimization for Direct Reprogramming of Primary Human Fibroblast into Induced Striatal Neurons
Nina Kraskovskaya1,2, Anastasia Bolshakova2, Mikhail Khotin1
1Center of Cellular Technologies, Institute of Cytology of the Russian Academy of Science, 194064 St. Petersburg, Russia.
International Journal of Molecular Sciences
|April 13, 2023
Summary
This study enhances direct reprogramming to create patient-specific induced neurons for neurodegenerative disease research. Modified methods improve cell survival and yield, enabling functional studies and potential therapeutic development.
Area of Science:
- Neuroscience
- Cell Biology
- Biotechnology
Background:
- Patient-specific induced neurons are crucial for modeling neurodegenerative diseases.
- Direct reprogramming offers advantages over induced pluripotent stem cells for age-related neuropathology.
- Existing direct reprogramming methods suffer from low cell viability and limited neuron yield.
Purpose of the Study:
- To improve direct reprogramming efficiency and cell viability for generating induced neurons.
- To overcome challenges like multinucleated cells and low survival rates in direct reprogramming.
- To establish a robust method for creating patient-specific induced striatal neurons (iSNs) for disease modeling.
Main Methods:
- Modified direct reprogramming using microRNA and transcription factors.
- Synchronization of fibroblast cells in the G1 phase to enhance homogeneity and survival.
- Co-culturing induced striatal neurons (iSNs) with mouse cortical neurons to assess functionality.
Main Results:
- Achieved high efficiency in generating functionally active iSNs.
- Increased cell viability and eliminated multinucleated cells through G1 phase synchronization.
- Demonstrated that iSNs form functional synaptic connections in co-cultures.
Conclusions:
- The modified direct reprogramming method significantly enhances the generation of functional induced neurons.
- This approach improves patient-specific disease modeling for neurodegenerative conditions.
- The technique is adaptable for creating various types of induced neurons by altering transcription factors.
