Generating high-purity cardiac and endothelial derivatives from patterned mesoderm using human pluripotent stem cells
Authors: Nathan J Palpant; Lil Pabon; Clayton E Friedman; Meredith Roberts; Brandon Hadland; Rebecca J Zaunbrecher; Irwin Bernstein; Ying Zheng; Charles E Murry
Step 1: iPSC/ESC maintainance
day 0 ~ 1
culture “adherent” human PSC in “mTeSR” for “1” days. For ECM, use “Matrigel” at “N/A” “N/A”. Medium should contain factors shown in the following table, and should be changed once in “1” days.
| concentration | unit | |
|---|---|---|
| CHIR90021 | 1.0e-6 | mol/l |
| PSA | 0.001 | g/l |
| Y27632 | 1.0e-5 | mol/l |
Step 2: Primitive streak 1
day 1 ~ 2
culture “adherent” human PSC in “RPMI” for “1” days. For ECM, use “Matrigel” at “N/A” “N/A”. Medium should contain factors shown in the following table, and should be changed once in “1” days.
| concentration | unit | |
|---|---|---|
| Activin A | 1.0e-4 | g/l |
| B27 (-Insulin) | — | — |
| Matrigel | — | — |
Step 3: Primitive streak 2
day 2 ~ 3
culture “adherent” human PSC in “RPMI” for “1” days. For ECM, use “Matrigel” at “N/A” “N/A”. Medium should contain factors shown in the following table, and should be changed once in “1” days.
| concentration | unit | |
|---|---|---|
| BMP4 | 5.0e-6 | g/l |
| CHIR90021 | 1.0e-6 | mol/l |
| B27 (-Insulin) | — | — |
Step 4: endothelial 1
day 3 ~ 6
culture “adherent” human PSC in “StemPro” for “3” days. For ECM, use “Matrigel” at “N/A” “N/A”. Medium should contain factors shown in the following table, and should be changed once in “3” days.
| concentration | unit | |
|---|---|---|
| VEGF | 3.0e-4 | g/l |
| BMP4 | 1.0e-5 | g/l |
| FGF | 5.0e-6 | g/l |
| Ascorbic Acid | 0.05 | g/l |
| MTG | 4.0e-4 | mol/l |
| Glutamine | 0.002 | mol/l |
Ideally, “EC” should express “KDR”, “CD34”, “PECAM1”, “CDH5” at the end of culture.
Step 5: endothelial 2
day 6 ~ 11
culture “adherent” unknown species cell in “EGM” for “5” days. For ECM, use “Gelatin” at “0.1” “%”. Medium should contain factors shown in the following table, and should be changed once in “5” days.
| concentration | unit | |
|---|---|---|
| VEGF | 2.0e-5 | g/l |
| FGF | 2.0e-5 | g/l |
| CHIR90021 | 1.0e-6 | mol/l |
Ideally, “EC” should express “PECAM1”, “CDH5” at the end of culture.