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Updated: Dec 8, 2025
08:13
A Cre-Lox P Recombination Approach for the Detection of Cell Fusion In Vivo
Published on: January 4, 2012
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[Intercellular mRNA transfer investigated by a Cre-loxP system]
Mengxue Wang1, Xiaosong Han2, Chao Ni3
1Institute of Psychiatry and Neurology, Xinxiang Medical University, Xinxiang 453000, China.
Summary
Messenger RNA (mRNA) can transfer between living cells through direct contact, influencing recipient cell functions. This intercellular mRNA transfer process was studied using a Cre-loxP system.
Area of Science:
- Cell Biology
- Molecular Biology
- Gene Expression
Background:
- Intercellular communication is crucial for multicellular organisms.
- The mechanisms of direct molecule transfer between cells are not fully understood.
- Messenger RNA (mRNA) transfer's role in cell function warrants investigation.
Purpose of the Study:
- To investigate the process and significance of intercellular mRNA transfer.
- To utilize a Cre-loxP system to track mRNA transfer between cells.
- To explore factors influencing mRNA transfer, including cell contact, nanotubes, and signaling pathways.
Main Methods:
- Established Cre-expressing donor cells and loxP-DsRed-loxP-eGFP-expressing recipient cells.
- Performed co-culture and Transwell co-culture experiments, with recipient cells cultured alone as controls.
- Analyzed eGFP expression in recipient cells after 72 hours and used immunofluorescence to detect Cre protein.
Main Results:
- eGFP+ recipient cells were observed only in direct co-culture, indicating cell-cell contact mediates mRNA transfer.
- Cre mRNA was translated into protein and transported to the nucleus in recipient cells.
- Membrane nanotubes and ROCK signaling pathway inhibitors partially blocked intercellular Cre mRNA transfer.
Conclusions:
- Living cells can exchange mRNA through direct intercellular contact.
- This mRNA exchange can alter biological functions in recipient cells.
- Cell-cell contact, membrane nanotubes, and ROCK signaling are involved in intercellular mRNA transfer.
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