Efficient differentiation and purification of human induced pluripotent stem cell-derived endothelial progenitor cells and expansion with the use of inhibitors of ROCK, TGF-β, and GSK3β
DOI: 10.1016/j.heliyon.2020.e03493
Authors: Hiromasa Aoki; Misaki Yamashita; Tadahiro Hashita; Koichi Ogami; Shinichi Hoshino; Takahiro Iwao; Tamihide Matsunaga
Step 1: iPSC/ESC maintainance
day 0 ~ 1
culture “adherent” human PSC in “Essential 8 Flex medium” for “1” days. For ECM, use “VTN-N” at “0.01” “g/m2”. Medium should contain factors shown in the following table, and should be changed once in “1” days.
| concentration | unit | |
|---|---|---|
| Y27632 | 1.0e-5 | mol/l |
Ideally, “PSC” should be obtained at the end of culture.
Step 2: Primitive streak 1
day 1 ~ 2
culture “adherent” human PSC in “DMEM/F12” for “1” days. For ECM, use “VTN-N” at “0.01” “g/m2”. Medium should contain factors shown in the following table, and should be changed once in “1” days.
| concentration | unit | |
|---|---|---|
| chemically defined lipid concentrate | 0.1 | % |
| ITS | 0.1 | x |
| GlutaMAX | 0.002 | mol/l |
| MTG | 0.45 | mol/l |
| L-ascorbic acid phosphate magnesium salt n-hydrate | 0.05 | g/l |
| penicillin–streptomycin solution | 1 | x |
| CHIR90021 | 5.0e-6 | mol/l |
Step 3: mesoderm 1
day 2 ~ 3
culture “adherent” human PSC in “DMEM/F12” for “1” days. For ECM, use “VTN-N” at “0.01” “g/m2”. Medium should contain factors shown in the following table, and should be changed once in “1” days.
| concentration | unit | |
|---|---|---|
| chemically defined lipid concentrate | 0.1 | % |
| ITS | 0.1 | x |
| GlutaMAX | 0.002 | mol/l |
| MTG | 0.45 | mol/l |
| L-ascorbic acid phosphate magnesium salt n-hydrate | 0.05 | g/l |
| penicillin–streptomycin solution | 1 | x |
| FGF | 5.0e-5 | g/l |
Step 4: endothelial 1
day 3 ~ 4
culture “adherent” human PSC in “DMEM/F12” for “1” days. For ECM, use “VTN-N” at “0.01” “g/m2”. Medium should contain factors shown in the following table, and should be changed once in “1” days.
| concentration | unit | |
|---|---|---|
| chemically defined lipid concentrate | 0.1 | % |
| ITS | 0.1 | x |
| GlutaMAX | 0.002 | mol/l |
| MTG | 0.45 | mol/l |
| L-ascorbic acid phosphate magnesium salt n-hydrate | 0.05 | g/l |
| penicillin–streptomycin solution | 1 | x |
| VEGF | 5.0e-5 | g/l |
| BMP4 | 2.5e-5 | g/l |
Ideally, “EPC” should be obtained at the end of culture.
Step 5: endothelial 2
day 4 ~ 5
culture “adherent” human PSC in “HE-SFM” for “1” days. For ECM, use “porcine skin gelatin” at “0.1” “%”. Medium should contain factors shown in the following table, and should be changed once in “1” days.
| concentration | unit | |
|---|---|---|
| KSR | 5 | % |
| penicillin–streptomycin solution | 1 | x |
| VEGF | 5.0e-5 | g/l |
| FGF | 1.0e-5 | g/l |
Ideally, “EPC” should be obtained at the end of culture.