72181
liquid
Novagen®
OK to freeze
transfection: suitable
wet ice
2-8°C
Danger
Eye Irrit. 2 - Flam. Liq. 2
3 - Flammable liquids
WGK 2
67.1 °F - Information taken from reference works and the literature.
19.5 °C - Information taken from reference works and the literature.
Search for Certificates of Analysis (COA) by entering the products Lot/Batch Number. Lot and Batch Numbers can be found on a product’s label following the words ‘Lot’ or ‘Batch’.
Documents related to the products that you have purchased in the past have been gathered in the Document Library for your convenience.
How to Find the Product Number
Product numbers are combined with Pack Sizes/Quantity when displayed on the website (example: T1503-25G). Please make sure you enter ONLY the product number in the Product Number field (example: T1503).
Example:
Additional examples:
705578-5MG-PW
PL860-CGA/SHF-1EA
MMYOMAG-74K-13
1000309185
enter as 1.000309185)
Having trouble? Feel free to contact Technical Service for assistance.
How to Find a Lot/Batch Number for COA
Lot and Batch Numbers can be found on a product's label following the words 'Lot' or 'Batch'.
For a lot number such as TO09019TO, enter it as 09019TO (without the first two letters 'TO').
For a lot number with a filling-code such as 05427ES-021, enter it as 05427ES (without the filling-code '-021').
For a lot number with a filling-code such as STBB0728K9, enter it as STBB0728 without the filling-code 'K9'.
In some cases, a COA may not be available online. If your search was unable to find the COA you can request one.
Each cell type behaves differently, by carrying out an optimization, the best transfection condition for your particular cell type can be determined. In other words, you can avoid putting too much transfection reagent on your cells, which may cause unnecessary toxicity issue and waste of precious transfection reagent. Optimization is suggested for every new combination of cell type and plasmid. The most important parameters are cell density and ratio of transfection reagent to DNA. Start with the volume of the selected transfection reagent (1x) and plasmid amount (1x) as recommended in the User Protocol. If those conditions do not yield the desired results, an optimization experiment can be performed. In a 24-well plate, plate the same amount of cells in each well. Set up a gradient across the plate and add the appropriate volume of transfection reagent (0.5x, 1x, 1.5x, 2x, 2.5x and 3x). Set up a gradient down the plate and add the appropriate amount of plasmid (0.5x, 1x, 1.5x and 2x). With a reporter gene in the plasmid, the optimal condition can be easily determined.
Large plasmids in the range of 12-15 kb can be transfected. We have cloned and expressed inserts encoding large proteins (including β-gal) without difficulty in mammalian cell lines.
Yes, it is essential that the DNA to be transfected is of high quality and free of endotoxins. Plasmid DNA preparations should include an endotoxin removal step.
Since our nucleic acid transfection reagents are compatible with serum-containing media, medium change after transfection is not necessary. The majority of cell types can be incubated with the transfection mix for 24-72h without any media change, and then harvested for the desired downstream application. If media change is necessary due to the toxicity of the protein being expressed, the transfection mixture can be removed after 2-8h of incubation and replaced with complete growth medium.
Yes. Our nucleic acid transfection reagents are effective for transfecting cells in media with or without serum. While cells can be incubated in media containing serum, it is absolutely critical that serum is NOT present during formation of the transfection reagent/DNA complex. For most applications, we recommend adding the transfection reagent/DNA complex (formed in serum-free media) to cells grown in complete growth media. For certain cell lines and experimental conditions, serum starvation of cells might be required. Since serum provides growth factors and nutrients, transfection efficiencies achieved with growth in serum containing media are typically better than those in serum-free media.
Yes. Multiple plasmids can be transfected into the cell at the same time. The key is to maintain the optimal ratio of total DNA (all plasmids). See the User Protocols for more information on the ratio of reagent to DNA.
We do not recommend including antibiotics during the formation of the transfection reagent/DNA complex. Increased cell permeability during transfection causes high antibiotic influx, resulting in cell death. Some antibiotics (such as kanamycin) are cationic and can therefore interfere with transfection. Antibiotics such as penicillin and streptomycin can be present in the complete growth media (with serum) which is used to grow the cells. If you are generating stable transfectants, add selection antibiotics (e.g., G 418 or hygromycin) 48-72h after transfection.
For most standard culture formats, guidelines are provided in the User Protocol. If you are using different culture volumes, vary the amounts of DNA, transfection reagent, cells, and culture media in proportion to the relative surface area while keeping the transfection reagent: DNA ratio constant.
Transfection of nucleic acids requires cells to be actively dividing. Therefore, the optimum cell density for transfection is generally between 50-80% confluency for adherent cells and 1.0-2.0 x 106 cells/mL for suspension cells. Avoid using extensively passaged cells; use a fresh vial of cells if a sudden drop in transfection efficiency is noticed. If necessary, determine the optimum cell density and passage number range for every new cell line, and keep these parameters constant for all experiments to ensure reproducibility.
Our team of scientists has experience in all areas of research including Life Science, Material Science, Chemical Synthesis, Chromatography, Analytical and many others.
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