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Updated: Aug 30, 2026
Preparation of Rat Oligodendrocyte Progenitor Cultures and Quantification of Oligodendrogenesis Using Dual-infrared Fluorescence Scanning
Published on: February 17, 2016
Downregulation of Nogo-A expression of oligodendrocytes in vitro with antisense oligodeoxynucleotides
Xijia Peng1, Shaozhang Liu, Jian Ye
1Department of Ophthalmology, Daping Hospital, Research Institute of Surgery, Third Military Medical University, Chongqing 400042, China.
Purpose:
To investigate the effect of antisense oligonucleotides (ODN) to Nogo-A mRNA expression in oligodendrocytes and to establish the base for further research of repair of optic nerve injury.
Method:
(1) Oligodendrocytes were obtained by inoculating the optic nerve of newborn (2 days) rats and were identified with galactocerebroside(GC) antibody immunocytochemical stain. (2) In order to observe the effects of antisense ODN on cultured cells, we set up five groups, including the groups of three concentration of antisense Nogo-A ODN (2 microM, 5 microM, 10 microM), a group with the random sequence added to the medium and the control group. Reverse transcription-polymerase chain reaction (RT-PCR) was adopted to study the effects of ODN on the expression of Nogo-A in oligodendrocytes.
Results:
(1) Three days after inoculation, a few of round or fusiform shape cells migrated from optic nerve tissue; About 11 days later, the coverlips were completely covered by the cells; The cells identified with GC antibody immunocytochemical stain were positive cells. (2) The result of RT-PCR study showed that antisense Nogo-A ODN could significantly and specifically inhibit the expression of Nogo-A after 24 hours (P < 0.01). Random sequence has no effect on Nogo-A expression.
Conclusion:
Antisense Nogo-A ODN can effectively and specifically inhibit the expression of Nogo-A.
Insights
Antisense oligonucleotides (ODN) effectively inhibit Nogo-A mRNA expression in oligodendrocytes. This finding supports research into repairing optic nerve injuries by targeting Nogo-A.
Area of Science:
- Neuroscience
- Molecular Biology
- Regenerative Medicine
Background:
- Oligodendrocytes are crucial for myelin sheath formation in the central nervous system.
- Nogo-A is a known inhibitor of axonal regeneration after injury.
- Understanding Nogo-A regulation in oligodendrocytes is key for developing optic nerve repair strategies.
Purpose of the Study:
- To evaluate the efficacy of antisense oligonucleotides (ODN) in suppressing Nogo-A mRNA expression within oligodendrocytes.
- To lay the groundwork for future research focused on optic nerve injury repair.
Main Methods:
- Primary rat oligodendrocyte cultures were established from newborn optic nerves.
- Cells were treated with varying concentrations of antisense Nogo-A ODN (2, 5, 10 microM) or a random sequence control.
- Reverse transcription-polymerase chain reaction (RT-PCR) was employed to quantify Nogo-A mRNA levels.
Main Results:
- Antisense Nogo-A ODN significantly and specifically reduced Nogo-A mRNA expression in oligodendrocytes within 24 hours (P < 0.01).
- The observed inhibition was concentration-dependent.
- A random sequence control ODN did not affect Nogo-A expression levels.
Conclusions:
- Antisense Nogo-A ODN demonstrates potent and specific inhibitory effects on Nogo-A expression in oligodendrocytes.
- This targeted inhibition provides a promising avenue for therapeutic interventions in optic nerve injury.
