Tenacissoside H
Tenacissoside H has antitumor activity on esophageal cancer through arresting cell cycle and regulating PI3K/Akt-NF-κB transduction cascade.
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Providing storage is as stated on the product vial and the vial is kept tightly sealed, the product can be stored for up to
24 months(2-8C).
Wherever possible, you should prepare and use solutions on the same day. However, if you need to make up stock solutions in advance, we recommend that you store the solution as aliquots in tightly sealed vials at -20C. Generally, these will be useable for up to two weeks. Before use, and prior to opening the vial we recommend that you allow your product to equilibrate to room temperature for at least 1 hour.
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The packaging of the product may have turned upside down during transportation, resulting in the natural compounds adhering to the neck or cap of the vial. take the vial out of its packaging and gently shake to let the compounds fall to the bottom of the vial. for liquid products, centrifuge at 200-500 RPM to gather the liquid at the bottom of the vial. try to avoid loss or contamination during handling.
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Evid Based Complement Alternat Med. 2015; 2015: 464937.
Antitumor Activity of Tenacissoside H on Esophageal Cancer through Arresting Cell Cycle and Regulating PI3K/Akt-NF-κB Transduction Cascade[Pubmed:
26495015]
The purpose of the study was to elucidate the molecular mechanism of Tenacissoside H (TDH) inhibiting esophageal carcinoma infiltration and proliferation.
METHODS AND RESULTS:
In vitro, EC9706 cells were treated with TDH. Cells proliferation and cell cycle were assayed. PI3K and NF-κB mRNAs expression were determined by real time PCR. In vivo, model of nude mice with tumor was established. Mice were treated with TDH. Inhibition ratio of tumor volume was calculated. PCNA expression was examined. Protein expression in PI3K/Akt-NF-κB signaling pathway was determined. In vitro, TDH significantly inhibited cells proliferation in a time-and-dose-dependent manner. TDH arrested the cell cycle in S phase and significantly inhibited PI3K and NF-κB mRNA expression, compared with blank controlled group (P < 0.05). In vivo, TDH strongly inhibits tumor growth and volume. PCNA expression was significantly decreased after treatment of TDH. TDH downregulated proteins expression in PI3K/Akt-NF-κB transduction cascade (P < 0.05).
CONCLUSIONS:
TDH inhibited esophageal carcinoma infiltration and proliferation both in vitro and in vivo. The anticancer activity has relation to arresting the cell cycle at the S phase, inhibited the PCNA expression of transplanted tumors in nude mice, and regulated the protein expression in the PI3K/Akt-NF-κB transduction cascade.
Zhongguo Zhong Yao Za Zhi. 2010 Aug;35(16):2083-6.
Determination of tenacissoside H in Marsdeniae tenacissimae by HPLC-ELSD.[Pubmed:
21046734]
METHODS AND RESULTS:
In order to improve the quality standard of Marsdenia tenacissima, a quantitative determination method of Tenacissoside H was developed using high performance liquid chromatography. The method was carried out on a YMC ODS-H80 (4.6 mm x 250 mm, 4 microm) column eluted with a mixture of acetonitrile and water (50:50) as the mobile phase. The flow rate was 0.8 mL x min(-1) and the column temperature was 35 degrees C. An evaporative light scattering detector (ELSD) was used with the temperature of drift tube set at 60 degrees C and the gas flow rate of nitrogen set at 1.5 mL x min(-1). The calibration curve was linear in the range from 0.5625 to 36.00 microg (r = 0.9998). The average recovery and RSD were 99.41% and 1.8%, respectively. The contents of Tenacissoside H in the 11 samples from different habitats varied from 0.201% to 0.862%.
CONCLUSIONS:
The method established in this paper is specific and reliable to control and evaluate the quality of M. tenacissima.
