Vitamin C–dependent lysine demethylase 6 (KDM6)-mediated demethylation promotes a chromatin state that supports the endothelial-to-hematopoietic transition
Authors: Tian Zhang; Ke Huang; Yanling Zhu; Tianyu Wang; Yongli Shan; Bing Long; Yuhang Li; Qianyu Chen; Pengtao Wang; Shaoyang Zhao; Dongwei Li; Chuman Wu; Baoqiang Kang; Jiaming Gu; Yuchan Mai; Qing Wang; Jinbing Li; Yanqi Zhang; Zechuan Liang; Lin Guo; Fang Wu; Shuquan Su; Junwei Wang; Minghui Gao; Xiaofen Zhong; Baojian Liao; Jiekai Chen; Xiao Zhang; Xiaodong Shu; Duanqing Pei; Jinfu Nie; Guangjin Pan
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 | |
|---|---|---|
| Thiazovivin | 1.0e-7 | mol/l |
Step 2: Primitive streak 1
day 1 ~ 2
culture “adherent” human PSC in “DMEM/F12” 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 | |
|---|---|---|
| BMP | 4.0e-5 | g/l |
| Activin A | 3.0e-5 | g/l |
| FGF | 2.0e-5 | g/l |
| CHIR90021 | 6.0e-6 | mol/l |
| LY294002 | 1.0e-5 | mol/l |
| ITS | 1 | % |
| Ascorbic Acid | 70 | g/l |
| NaCl | 9 | % |
Ideally, “PS” should express “TBXT” at the end of culture.
Step 3: mesoderm 1
day 2 ~ 3
culture “adherent” human PSC in “DMEM/F12” 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 | |
|---|---|---|
| BMP | 3.0e-5 | g/l |
| A83-01 | 1.0e-6 | mol/l |
| IWR1 | 2.0e-6 | mol/l |
| ITS | 1 | % |
| Ascorbic Acid | 70 | g/l |
| NaCl | 9 | % |
Ideally, “LM” should express “HAND1”, “MSGN1” at the end of culture.
Step 4: endothelial 1
day 3 ~ 4
culture “adherent” human PSC in “DMEM/F12” 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 | |
|---|---|---|
| VEGF | 4.0e-5 | g/l |
| FGF | 5.0e-5 | g/l |
| ITS | 1 | % |
| Ascorbic Acid | 70 | g/l |
| NaCl | 9 | % |
Ideally, “HEC” should express “GATA2”, “PECAM1”, “RUNX1”, “MYB” at the end of culture.
Step 5: endothelial 2
day 4 ~ 5
culture “adherent” human PSC in “DMEM/F12” 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 | |
|---|---|---|
| VEGF | 4.0e-5 | g/l |
| FGF | 5.0e-5 | g/l |
| SB431542 | 1.0e-5 | mol/l |
| SCF | 1.0e-5 | g/l |
| TPO | 5.0e-5 | g/l |
| IL3 | 1.0e-5 | g/l |
| IL6 | 5.0e-5 | g/l |
| ITS | 1 | % |
| Ascorbic Acid | 70 | g/l |
| NaCl | 9 | % |