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英文名称：Cellartis GS2-M Mouse ES and iPS stem culture medium
中文名称：Cellartis GS2-M小鼠胚胎干细胞和多能诱导干细胞培养基
用途：小鼠（mouse）胚胎干细胞(ES)和诱导多能干细胞(iPS)细胞的维持培养
保存：基础培养基-20ºC；添加剂-80ºC
小鼠胚胎干细胞是*被体外分离培养并建系的干细胞，目前其相关研究已经比较完善并投入到了实际应用中，很多其他种属的干细胞研究也都会参考小鼠胚胎干细胞的研究成果。一个好的小鼠胚胎干细胞体外培养体系，需要同时满足操作简便、结果稳定、增长迅速、可重复性好、有效维持胚胎干细胞处于Ground-state等特点。
Cellartis 提供一款小鼠胚胎干细胞培养基GS2‐M，其成分确定、无血清，支持无饲养层培养，通过添加两种特别的小分子抑制剂（CHIR99021，PD0325901=2i）来阻断分化信号通路GSK3β和 ERK/MEK，进而维持小鼠胚胎干细胞处于Ground state。值得一提的是，使用GS2-M培养基培养的小鼠胚胎干细胞，与添加血清和LIF的培养基培养相比，可以更好地维持小鼠胚胎干细胞处于Ground-state。
GS2-M与细胞因子leukemia inhibitory factor (LIF)一同使用时，可以通过调控Nanog信号通路实现将partial or pre‐iPS cells转化成为fully pluripotent iPS cells(1, 2)。
GS2‐M is a compley defined, serum‐free cell culture media formulation for the generation and long-term maintenance of human and mouse embryonic stem (ES) and induced pluripotent stem (iPS) cell lines. The medium contains two selective small molecule inhibitors that block differentiation‐inducing signals and promote cell survival.
GS2-M medium can be used in combination with the self-renewal cytokine leukemia inhibitory factor (LIF) to convert partial or pre‐iPS cells from mouse into fully pluripotent iPS cells via upregulation of Nanog (1, 2).
产品特点：
特点 | 优势 |
由Dr.Austin Smith研发 | 在很多杂志上发表，实验数据可信，可放心使用 |
成分确定、无血清 | 批次间*，无需担心批次间差异 |
无饲养层培养 | 不需要准备饲养层细胞， |
使用GSK3β和 ERK/MEK抑制剂 | 维持细胞处于强的Ground state， |
不添加LIF也可以发挥作用 | 组分简单，不需要额外购买LIF， |
Compley defined, serum-free formulation
Uses selective small molecule inhibitors to block differentiation signals from GSK3β and ERK/MEK and maintain ES and iPS cells in a pluripotent state
Allows long-term maintenance of germline-competent mouse and human ES and iPS cells
产品应用
小鼠部分或pre-iPS细胞转化为*多能干细胞*
将人ES细胞或iPS细胞转化为初始(naïve)干细胞*
维持纯ES和iPS细胞的多能状态
*在Forskolin和/或LIF存在下
Conversion of partial or pre-iPS cells from mouse into fully pluripotent stem cells*
Conversion of human pre-ES or iPS cells into naïve stem cells*
Maintenance of pure ES and iPS cells in a pluripotent state
*In the presence of Forskolin and/or LIF
组份：
100 ml medium
100 µl 2i inhibitor supplement
自备试剂：
A. For mouse ES and iPS cells.
Culture vessels are pre-coated with either 0.1% gelatin type A in PBS solution (at room temperature for 15 minutes or more), or precoated sequentially with 0.01% poly-L-ornithine hydrobromide (at 37℃ for 30 minutes or more), washing twice with PBS, followed by 10 μg/mL laminin in PBS (at 37℃ for 3 hours or more).
B. For human iPS cells.
Please refer to Wang W, et al. (2011) reference for more detailed reagent and culture requirements to generate and propagate ‘naïve’ human iPS cells4.
A.对于小鼠ES和iPS细胞。
培养容器在PBS溶液（室温下15分钟或更长时间）中预先用0.1％明胶A型包被，或者预先用0.01％聚-L-鸟氨酸氢溴酸盐（在37℃下30分钟或更多）预包被， 用PBS洗涤2次，然后用PBS中的10μg/ mL层粘连蛋白（37℃下3小时以上）洗涤。
B.对于人类iPS细胞。
请参考王伟等人（2011）更详细的试剂和培养要求以生成和传播“幼稚”人类iPS细胞的参考文献4。
保存：Upon receipt, store the media at -20℃ and the GS2-M 2i inhibitor supplement at -80℃ until ready to use. When stored under these conditions, the products are stable for 12 months from the date of manufacture (see label).Once thawed and combined, store at 4℃ and use within 2 weeks.This product is light sensitive, and should be protected from light.
参考文献：
1. Silva J, et al. (2008) Promotion of reprogramming to ground state pluripo-tency by signal inhibition. PLoS Biol. 6: e253.
2. Silva J, et al. (2009) Nanog is the gateway to the pluripotent ground state.Cell. 138(4): 722-737.
3. Nichols J, et al. (2009) Validated germline-competent embryonic stem cell lines from non-obese diabetic mice. Nat Med. 15: 814-818.
4. Wang W, et al. (2011) Rapid and efficient reprogramming of somatic cells to induced pluripotent stem cells by retinoic acid receptor gamma and liver receptor homolog. PNAS (USA). 108(45): 18283-18288.
5. Reviewed in: Malaver-Ortega LF, et al. (2012) Theriogenology. 78(8): 1749-1762.
Cellartis 小鼠/大鼠胚胎干细胞培养基系列：成分确定、无血清培养基
GS2-M® 小鼠胚胎干细胞和多能诱导干细胞培养基，无饲养层，不依赖LIF
iSTEM™ 小鼠胚胎干细胞培养基，难获得ES细胞小鼠
GS1-R® 大鼠多能干细胞培养基，需要饲养层，胚胎干细胞和胚胎生殖细胞（EG）
华雅再生医学旗舰公司：红荣微再（上海）生物工程技术有限公司主营细胞治疗和精准医疗等产品，2018年与TAKARA继续合作，授权代理（上海）其旗下Cellartis干细胞研究制品和Rubicon单细胞文库构建试剂。Cellartis公司位于瑞典，拥有iPS细胞等干细胞分化为肝细胞及脏器细胞的分化诱导技术和ES细胞，ips细胞，分化细胞等干细胞相关产品。
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