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The Functions of Fetal Bovine Serum (What Are the Uses of Fetal Bovine Serum?)
At present, an increasing number of biologics are produced using animal cell culture technology, further expanding the scope of its applications. Fetal bovine serum (FBS), as one of the key components of animal cell culture media, plays a crucial role in this field. The functions of fetal bovine serum can be summarized as follows:
The role of fetal bovine serum
1. Provides nutrients to cells
In contemporary cell culture, the basal media contain only limited amounts of essential nutrients; therefore, it is necessary to supplement them with specialized fetal bovine serum to supply growth‑promoting factors and ensure optimal cell proliferation. Moreover, high‑quality fetal bovine serum provides binding proteins that efficiently sequester vitamins and lipids, thereby delivering targeted nutrients to sustain cellular viability and activity.
2: Protect cells from damage
During cell culture, special care must be taken to protect the cells. Therefore, using high‑quality fetal bovine serum can effectively provide protease inhibitors, which efficiently neutralize residual proteases during cell division, thereby ensuring that the cells being cultured remain undamaged.
3. It plays a detoxifying role.
During cell culture, certain toxic metals and pyrogens can exert cytotoxic effects. Fetal bovine serum, rich in binding proteins, can complex with these substances, precipitating the toxic components and thereby neutralizing their harmful effects. This ensures that fetal bovine serum maintains optimal performance, maximizing its efficacy in supporting cell growth.
What are the uses of fetal bovine serum?
Fetal bovine serum is a widely used natural medium in cell culture, rich in nutrients essential for cell growth. It is commonly employed for the in vitro cultivation of animal cells and performs several critical functions: supplying hormones that sustain exponential cell growth, providing nutrients absent or present in very low concentrations in basal media, and delivering key low-molecular-weight nutrients.
They can provide binding proteins and recognize vitamins, lipids, metals, and other hormones, thereby binding to these substances or modulating their biological activity. In some cases, binding proteins can also bind to toxic metals and pyrogens, exerting a detoxifying effect.
Fetal bovine serum serves as a source of essential factors required for cell adhesion and spreading on plastic culture substrates. It supplies hormones that support exponential cell growth, nutrients that are absent or present in very low concentrations in standard culture media, and key low-molecular-weight nutrients. Fetal bovine serum can also act as a pH buffer and provides protease inhibitors, which protect cells from damage during trypsinization by inactivating residual trypsin.
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