StemSure^® hPSC MediumΔ

• Feeder-free, serum-free media for culturing hPSCs.
• Quality control testing of each lot is performed using the human iPS cell 201B7 strain.
• Animal component-free.
• Albumin-free, low-protein media.
• Compatible with various culture vessel surface coating reagents, such as Matrigel®, iMatrix-511 and vitronectin.
• Compatible with various cell dissociation reagents, such as Accutase and TrypLE Select.
• Enables single-cell passaging by adding Y-27632 when passage.

• Cell proliferation assay (using the human iPS cell 201B7 strain)
• Alkaline phosphatase staining (using the human iPS cell 201B7 strain)
• Sterility test
• pH
• Osmolality
• Endotoxin test
• Mycoplasma negative test

This product does not contain basic fibroblast growth factor (bFGF).
Store frozen at –20°C. After thawed, store at 2-10°C for up to one week. Do not refreeze.

Human iPS cells 201B7 strain were first cultured in BSA-containing, feeder-free media manufactured by Competitor A. Subsequently, these cells (passage 0) were transferred to StemSure^® hPSC MediumΔ (passage 1) and cultured successively. During subculture, we analyzed their morphology, population doubling levels, and undifferentiated state. The results are shown below.

• Cell Morphology

  Human iPS cells 201B7 strain were first cultured in BSA-containing, feeder-free media manufactured by Competitor A. Subsequently, these cells (passage 0) were transferred to StemSure hPSC MediumΔ (passage 1) and cultured successively. During subculture, we analyzed their morphology, population doubling levels, and undifferentiated state. The results are shown below.
  
  

• Population Doubling Level

  Compared with cells maintained in Competitor A’s medium, human iPS cells transferred to StemSure^® hPSC Medium Δ grew faster during the culture period ranging from passage 1 (at the time of cell transfer) to passage 5, and even after.
  
  
  
  ＜ Media Compsition ＞
  StemSure^® hPSC MediumΔ + 35ng/ml bFGF
  ＜ Seeding Density ＞
  1×10⁵cells/well（cultured in 6-well plate）

Maintenance of Undifferentiated State

Cultured in StemSure^® hPSC MediumΔ (passage 5) and checked expression of the undifferentiated markers (Nanog, Oct3/4, Tra-1-60, SSEA-4, and BC2LCN).
※BC2LCN is a recombinant lectin with high affinity for glycans that exists on the surface of hPSCs.

Human ES Cells WA01 strain were first cultured in BSA-containing, feeder-free media manufactured by Competitor A. Subsequently, these cells (passage 0) were transferred to StemSure hPSC Medium  (passage 1) and cultured successively. During subculture, we analyzed their morphology, population doubling levels, and undifferentiated state. The results are shown below.

• Cell Morphology

  When cultured in Competitor A’s media, cells of differentiated morphology appeared after passage 2. In contrast, human ES cells cultured in StemSure^® hPSC Medium Δ did not show any morphological changes. This indicates that StemSure hPSC MediumΔ can maintain the undifferentiated state of human ES cells.
  
  

• Population Doubling Level

  There was no difference in cell proliferation ability compared to the Competitor A’ media from passage 1 after transfer to StemSure^® hPSC MediumΔ until passage 5.
  
  
  
  ＜ Media Composition ＞
  StemSure^® hPSC MediumΔ + 35ng/ml bFGF
  ＜ Seeding Density ＞
  1×10⁵cells/well（cultured in 6-well plate）

Maintenance of Undifferentiated State

Cultured in StemSure^® hPSC MediumΔ (passage 6) and checked expression of the undifferentiated markers(Nanog, Oct3/4, Tra-1-60, SSEA-4, and BC2LCN).

Karyotype analysis revealed no chromosomal abnormalities in human iPS cells passaged 27 times in StemSure^® hPSC MediumΔ.

＜ Data provided by Dr. Takumi Miura and Dr, Hidenori Akutsu of the Center for Regenerative Medicine at the National Research Institute for Child Health and Development. ＞

＜ Media Composition ＞
StemSure^® D-MEM + StemSure^® Serum
Replacement + 2mmol/l L-Glutamine +
0.1mmol/l StemSure^® 2-Mercaptoetanol + 1
x Non-essential Amino Acids Solution