Table 1 Passaging protocols for hPSC culture

From: Enzyme-free Passage of Human Pluripotent Stem Cells by Controlling Divalent Cations

Passage Protocols

Culture Conditions

References

Divalent cations

Enzymes

Manipulation

Cell clump size

Serum replacement

Coat** & feeder

 

Ca2+, Mg2+ *

Collagenase

Cutting, Scraping, Glass beads

Large

KSR,

MEF

1,27

Ca2+, Mg2+ *

Free

Cutting

Large

KSR

MEF

5

Ca2+ ***

Trypsin & Collagenase

Pipetting

Large

KSR

MEF

2,6,23

Free (EDTA)

Trypsin TrypLE

Pipetting

Single cells, Large

KSR

MEF

4,5,6,19,28

Free (EDTA)

Free (CDB#)

Pipetting

Single cells

KSR

MEF

5

Ca2+, Mg2+ *

Dispase, Collagenase TrypLE

Scraping, Pipetting

Large

Free

Mg, Gx, Lm, Vn, Fb, Cg, pVn, pBSP

8,14,15,20,29

Ca2+, Mg2+ *

Free

Cutting

Large

Free

Vn

12

Free (EDTA)

Free (CDB#)

Pipetting

Small

Free

Mg, HBP

8,30

Ca2+

Free

Pipetting

Large (Small)

Free

Fb

Present study

  1. *DEME/F12 or ESF solution16 containing Ca2+, Mg2+.
  2. **MEF: mouse embryonic fibroblast feeder cells on gelatin-coated dishes, Mg: Matrigel, Gx: geltrex, Lm: laminin, Vn: vitronectin, Cg: collagen, pVn: vitronectin-derived peptide, pBSP: bone sialoprotein-derived peptide, HBP: heparin-binding peptide.
  3. ***Dissociation solution named CTK containing CaCl2, trypsin, collagenase IV and KSR23. KSR contains many divalent cations.
  4. # CDB: Cell dissociation Buffer (Life Technologies).