 
        Department of Clinical Laboratory, Aichi Medical University, Nagakute, Japan
 Research Article   
								
																Serum Produced from Expired Fresh Frozen Plasma and Cryosupernatant  Supports the Proliferation of Human Cells: Cost-Effective Alternatives to  Fetal Bovine Serum 
																Author(s): Kazuki Ishiyama, Mika Ogawa, Hidefumi Kato, Kyosuke Takeshita, Ryuzo Ueda and Takayuki Nakayama*             
								
																
						 Background: Fetal Bovine Serum (FBS) is the most common growth factor used in cell culture. However, demands
  for xeno-free cell culture supplements for clinical use that comply with good manufacturing practice standards are
  increasing as cellular therapies expand. Human serum has been proposed as an alternative to FBS. Due to limited
  availability of donors and effective use of medical resources, we attempted to produce serum from expired Fresh
  Frozen Plasma (FFP) and Cryosupernatant (CS) and tested them as FBS substitutes.
Results: We found that 1-hour incubation of FFP or CS with a physiological level of thrombin and alcium Chloride
  (CaCl2) depleted virtually all fibrinogen. Comparative proliferation studies with FBS and human Platelet Lysates
  (hPLs) showed that compared with FBS, FFP-serum exhibited similar or gr.. View more»