How do you deplete exosomes in FBS?
The recommended protocol for eliminating FBS EVs is to centrifuge the FBS for 18 hours at 100,000×g (13). However, a protocol using a 1.5-hour centrifugation only is also used by some investigators.
What is FBS used for?
What is FBS used for? Fetal bovine serum (FBS) is used as a growth supplement for the in vitro cell culture of eukaryotic cells. Animal sera—both bovine and non-bovine sera—are used in cell culture applications with the most widely used being fetal bovine serum (FBS).
What does FBS contain?
Bovine serum albumin is the major component of FBS. Growth factors in FBS are essential for the maintenance and growth of cultured cells [1, 2]. FBS also contains a variety of small molecules like amino acids, sugars, lipids, and hormones. FBS is used in a wide range of applications.
Do I need to heat inactivate FBS?
Since we have changed to fetal bovine serum, we find that heat inactivation is not necessary for most cell lines.
What is heat inactivated FBS?
Fetal Bovine Serum – Premium, Heat Inactivated is a low-endotoxin, low-hemoglobin FBS that offers excellent value for basic cell culture as well as for specific research applications. Premium grade FBS is widely used and demonstrates excellent performance with a broad spectrum of cell types.
Does FBS need to be heat inactivated?
How is exosome depleted FBS different from source FBS?
Our Exosome Depleted FBS looks very similar to the Source FBS used in production, whereas the competitor’s product shows protein band smearing. Panel B: CD63 Content by Western Blot Analysis: Exosomes were precipitated from FBS samples, run by SDS-PAGE, and probed by western blotting for CD63.
Why heat inactivated Exo-FBS?
But for researchers interested in isolating exosomes from cultured cells, standard heat inactivated FBS can introduce unwanted complications—bovine exosomes, which can cause significant background issues or interfere with functional studies. Which is why SBI developed heat inactivated Exo-FBS, our patented exosome-depleted FBS.
Does Exo-FBS work for bovine cells?
Exo-FBS supports robust cell growth (Figure 1), has greatly reduced levels of bovine exosomes (Figures 2), and bovine miRNAs (Figure 3). Cell growth in media supplemented with Exo-FBS is similar to cell growth in media supplemented with standard FBS (Figure 1). Figure 1.
What is the function of exosomes?
The characterization and analysis of exosomes is a rapidly evolving field, although their biological function is still not fully understood. Exosomes contain lipids, proteins, and microRNA that can regulate an array of target genes.
