Ginsenoside Rk2
(Synonyms: 人参皂苷Rk2) 目录号 : GC36141
Ginsenoside Rk2 人参皂苷 Rk2 是从加工过的人参 (SG; Sun Ginseng) 中分离出的达玛烷糖苷。
Cas No.:364779-14-6
Sample solution is provided at 25 µL, 10mM.
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Quality Control & SDS
- View current batch:
- Purity: >98.00%
- COA (Certificate Of Analysis)
- SDS (Safety Data Sheet)
- Datasheet
Ginsenoside Rk2 is a dammarane glycoside isolated from the processed ginseng (SG; Sun Ginseng)[1].
[1]. Park IH, et al. Three new dammarane glycosides from heat processed ginseng. Arch Pharm Res. 2002 Aug;25(4):428-32.
| Cas No. | 364779-14-6 | SDF | |
| 别名 | 人参皂苷Rk2 | ||
| Canonical SMILES | C[C@]12[C@@](C[C@@H](O)[C@@]3([H])[C@]2(CC[C@@H]3C(CC/C=C(C)/C)=C)C)([H])[C@@]4([C@@](C(C)([C@@H](O[C@]5([H])O[C@@H]([C@@H](O)[C@H](O)[C@H]5O)CO)CC4)C)([H])CC1)C | ||
| 分子式 | C36H60O7 | 分子量 | 604.86 |
| 溶解度 | DMSO : 50 mg/mL (82.66 mM; Need ultrasonic) | 储存条件 | Store at -20°C |
| General tips | 请根据产品在不同溶剂中的溶解度选择合适的溶剂配制储备液；一旦配成溶液，请分装保存，避免反复冻融造成的产品失效。 储备液的保存方式和期限：-80°C 储存时，请在 6 个月内使用，-20°C 储存时，请在 1 个月内使用。 为了提高溶解度，请将管子加热至37℃，然后在超声波浴中震荡一段时间。 |
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| Shipping Condition | 评估样品解决方案：配备蓝冰进行发货。所有其他可用尺寸：配备RT，或根据请求配备蓝冰。 | ||
| 制备储备液 | |||
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1 mg | 5 mg | 10 mg |
| 1 mM | 1.6533 mL | 8.2664 mL | 16.5328 mL |
| 5 mM | 0.3307 mL | 1.6533 mL | 3.3066 mL |
| 10 mM | 0.1653 mL | 0.8266 mL | 1.6533 mL |
| 第一步：请输入基本实验信息（考虑到实验过程中的损耗，建议多配一只动物的药量） | ||||||||||
| 给药剂量 | mg/kg |  |
动物平均体重 | g | |
每只动物给药体积 | ul | |
动物数量 | 只 |
| 第二步：请输入动物体内配方组成（配方适用于不溶于水的药物；不同批次药物配方比例不同，请联系GLPBIO为您提供正确的澄清溶液配方） | ||||||||||
| % DMSO % % Tween 80 % saline | ||||||||||
| 计算重置 | ||||||||||
计算结果:
工作液浓度： mg/ml；
DMSO母液配制方法： mg 药物溶于 μL DMSO溶液（母液浓度 mg/mL，
体内配方配制方法：取 μL DMSO母液，加入 μL PEG300，混匀澄清后加入μL Tween 80，混匀澄清后加入 μL saline，混匀澄清。
1. 首先保证母液是澄清的；
2.
一定要按照顺序依次将溶剂加入，进行下一步操作之前必须保证上一步操作得到的是澄清的溶液，可采用涡旋、超声或水浴加热等物理方法助溶。
3. 以上所有助溶剂都可在 GlpBio 网站选购。
Ginsenoside Rk2 Protects against Ulcerative Colitis via Inactivating ERK/MEK Pathway by SIRT1
J Environ Pathol Toxicol Oncol 2022;41(2):89-98.PMID:35695654DOI:10.1615/JEnvironPatholToxicolOncol.2021039648.
Background: Chinese traditional medicine is widely used in the treatment of ulcerative colitis (UC). Ginsenoside Rk2 is a newly discovered dammarane triterpenoid saponin isolated from ginseng. Our study aimed to investigate the effects of Ginsenoside Rk2 on UC. Methods: Human clones of colorectal adenocarcinoma Caco-2 cells and human intestinal epithelial THP-1 cells were co-cultured to establish a UC model in vitro. Cell viability and apoptosis were analyzed by cell counting kit 8 (CCK-8) and flow cytometry assay, respectively. Inflammatory cytokines' mRNA levels were measured by real-time quantitative polymerase chain reaction (RT-qPCR). Western blot was applied to examine the protein expression of apoptosis-associated proteins and the activation of the extracellular signal-regulated kinase (ERK)/mitogen-activated protein kinase (MEK) pathway. Furthermore, fisetin, an ERK kinase activator, was used to carry out rescue experiment. SRT1720, an activator of SIRT1, was applied to increase the SIRT1 protein levels while SIRT1 inhibitor nicotinamide (NAM) exerted the opposite effect. Results: Ginsenoside Rk2 promoted cell viability, suppressed cell apoptosis, and reduced the release of pro-inflammatory cytokines including interleukin (IL)-1β, IL-6, IL-10, and tumor necrosis factor-α (TNF-α) of HT-29 cells in UC model in a concentration-dependent manner. Meanwhile, the inhibitory effects of Ginsenoside Rk2 on the ERK/MEK pathway strengthened with the increase of concentration, and was verified by fisetin application. Furthermore, the upregulation of SIRT1 induced by Ginsenoside Rk2 prompted dephosphorylation of ERK and MEK to attenuate ERK/MEK pathway activation and reduced inflammatory progress, which was confirmed by SRT1720 as well as NAM. Conclusions: Ginsenoside Rk2 inactivated ERK/MEK pathway by regulating SIRT1 to restore the cellular function of human intestinal epithelial THP-1 cells. Therefore, Ginsenoside Rk2 may be effective in the treatment of UC.