Oligonucleotides are short nucleic acid polymers used in a wide range of biological research, diagnostic, and therapeutic applications. As a leading oligonucleotide supplier, we understand the critical importance of proper storage conditions to maintain the integrity and functionality of these delicate molecules. In this blog post, I’ll delve into the essential storage conditions for oligonucleotides and explain why they are crucial for ensuring the quality of our products. Oligonucleotide
Why Proper Storage Matters
Oligonucleotides are susceptible to degradation due to various factors, including temperature, humidity, light, and the presence of contaminants. Degraded oligonucleotides can lead to inaccurate experimental results, reduced efficiency in diagnostic assays, and ineffective therapeutic outcomes. Therefore, maintaining the appropriate storage conditions is essential to preserve the chemical and biological properties of oligonucleotides.
Storage Temperature
One of the most critical factors in oligonucleotide storage is temperature. Oligonucleotides are generally stable at low temperatures, which slow down the rate of chemical reactions that can lead to degradation.
Freezer Storage
For long – term storage, we recommend storing oligonucleotides in a freezer at – 20°C or lower. At these temperatures, the molecular movement is significantly reduced, minimizing the chances of chemical reactions such as hydrolysis and oxidation. When stored at – 20°C, oligonucleotides can remain stable for several years.
Refrigerator Storage
If you need to store oligonucleotides for a short period (a few weeks to a couple of months), refrigeration at 2 – 8°C can be sufficient. However, it’s important to note that the stability at this temperature is lower compared to freezer storage. Oligonucleotides stored in the refrigerator should be used relatively quickly to ensure their quality.
Avoiding Temperature Fluctuations
Temperature fluctuations can be detrimental to oligonucleotide stability. Repeated freeze – thaw cycles can cause physical stress on the molecules, leading to strand breakage and degradation. To prevent this, it’s advisable to aliquot oligonucleotides into smaller volumes before storage. This way, you can use one aliquot at a time without subjecting the entire sample to multiple freeze – thaw cycles.
Storage in Solution
Oligonucleotides can be stored either in a dry form or in solution. When storing oligonucleotides in solution, the choice of buffer is crucial.
Buffer Selection
A common buffer for oligonucleotide storage is TE buffer (10 mM Tris – HCl, 1 mM EDTA, pH 8.0). Tris provides a stable pH environment, while EDTA chelates metal ions that could catalyze degradation reactions. The pH of the buffer is important because oligonucleotides are more stable at slightly alkaline pH values.
Concentration Considerations
The concentration of the oligonucleotide in solution also affects its stability. Higher concentrations generally offer better stability because the molecules are less exposed to the surrounding environment. However, extremely high concentrations can lead to precipitation, so it’s important to find an optimal concentration for storage.
Protecting from Light
Light, especially ultraviolet (UV) light, can cause damage to oligonucleotides. UV light can induce the formation of thymine dimers and other photochemical reactions, which can alter the structure and function of the oligonucleotides.
Dark Storage
To protect oligonucleotides from light, they should be stored in opaque containers. Amber vials are commonly used for this purpose. If you are using clear containers, they should be wrapped in aluminum foil or stored in a dark cabinet.
Humidity and Contamination
Humidity can also impact the stability of oligonucleotides. High humidity can lead to the absorption of water by the oligonucleotides, which can promote hydrolysis reactions.
Desiccation
To prevent the effects of humidity, oligonucleotides should be stored in a dry environment. Desiccants such as silica gel can be placed in the storage container to absorb any moisture.
Contamination Prevention
Contamination with nucleases, bacteria, or other contaminants can degrade oligonucleotides. Therefore, it’s important to handle oligonucleotides in a clean environment and use sterile equipment. When aliquoting oligonucleotides, use pipette tips with filters to prevent the introduction of contaminants.
Quality Control and Monitoring
As an oligonucleotide supplier, we implement strict quality control measures to ensure that our products meet the highest standards. We test the purity, concentration, and integrity of our oligonucleotides before shipping. However, once the oligonucleotides are in your hands, it’s important to monitor their quality over time.
Periodic Testing
You can perform periodic tests, such as gel electrophoresis or high – performance liquid chromatography (HPLC), to check the integrity of your oligonucleotides. If you notice any signs of degradation, such as a decrease in concentration or the presence of additional bands on a gel, it may be time to replace the oligonucleotides.
Customized Storage Solutions
We understand that different customers may have different storage requirements based on their specific applications. That’s why we offer customized storage solutions to meet your needs. Whether you need oligonucleotides stored at a specific temperature or in a particular buffer, we can work with you to ensure that your oligonucleotides are stored under the optimal conditions.
Conclusion
Proper storage conditions are essential for maintaining the quality and functionality of oligonucleotides. By following the guidelines outlined in this blog post, you can ensure that your oligonucleotides remain stable and reliable for your research, diagnostic, or therapeutic applications.
API If you are in need of high – quality oligonucleotides or have any questions about storage conditions, we invite you to contact us for a procurement discussion. Our team of experts is ready to assist you in finding the best solutions for your needs.
References
- Sambrook, J., & Russell, D. W. (2001). Molecular Cloning: A Laboratory Manual (3rd ed.). Cold Spring Harbor Laboratory Press.
- Ausubel, F. M., Brent, R., Kingston, R. E., Moore, D. D., Seidman, J. G., Smith, J. A., & Struhl, K. (Eds.). (2002). Current Protocols in Molecular Biology. John Wiley & Sons.
Zhejiang Hengkang Pharmaceutical Co., Ltd.
Zhejiang Hengkang Pharmaceutical Co., Ltd. is well-known as one of the leading oligonucleotide manufacturers and suppliers in China. With a professional production team, we are able to meet the needs of the majority of our customers. Please feel free to wholesale bulk high quality oligonucleotide from our factory.
Address: No.11 Chengen Road, Pubagang Town, Sanmen County, Zhejiang Province, China.
E-mail: commercial@hengkangpharm.cn
WebSite: https://www.hengkang-pharm.com/
