Salidroside is a prolyl endopeptidase inhibitor. Salidroside alleviates cachexia symptoms in mouse models of cancer cachexia via activating mTOR signalling. Salidroside protects dopaminergic neurons by enhancing PINK1/Parkin-mediated mitophagy.

Salidroside (100 μM) inhibits prolyl endopeptidase (PEP) activity (10.6±1.9%). Prolyl endopeptidase is an enzyme that plays a role in the metabolism of proline-containing neuropeptidase which is recognized to be involved in learning and memory^[1]. Salidroside, one of the major phenylpropanoid glycosides found in R. rosea L, is consumed almost daily as a nutritional supplement in many countries and has been identified possessing potential anti-fatigue and anoxia,anti-aging, and anti-Alzheimer’s disease activities. Salidroside can improve muscle nutrition via increasing mTOR, p-mTOR, and MyHC expression^[2]. SH-SY5Y cells are exposed to 0-600 μM MPP+ for 12-48 h and the results show that MPP+ results in a significant decrease of cell viability in a concentration and time-dependent manner. Cells are pretreated with 25-100 μM Salidroside (Sal) for 24 h and then exposed to 500 μM MPP+ for an additional 24 h. Salidroside concentration-dependently prevents MPP+-induced decrease of cell viability. Annexin V/PI staining is a common method for the detection of apoptotic cell. Salidroside significantly decreases the number of Annexin V/PI-stained cells treated by MPP+ which is in a concentration-dependent manner. Apoptotic cell could also be morphologically evaluated by Hoechst staining. In Hoechst staining, apoptotic cells are characterized by reduced nuclear size, chromatin condensation, intense fluorescence, and nuclear fragmentation. Salidroside notably inhibits MPP+-induced increase of chromatin condensation, intense fluorescence, and nuclear fragmentation in SH-SY5Y cells^[3].

MCE has not independently confirmed the accuracy of these methods. They are for reference only.

Salidroside is a natural antioxidant extracted from medicinal food plant Rhodiola rosea. Salidroside (100 mg/kg/day) shows strong glucose lowering effect on db/db mice which is similar to effect of Metformin (200 mg/kg/day). For this reason, the dose of 100 mg/kg/day salidroside is used^[4].

MCE has not independently confirmed the accuracy of these methods. They are for reference only.

300.30

C₁₄H₂₀O₇

10338-51-9

红景天苷；毛柳甙；红景天甙

Room temperature in continental US; may vary elsewhere.

4deg;C, protect from light

*In solvent : -80deg;C, 6 months; -20deg;C, 1 month (protect from light)

In Vitro:;

H₂O : ≥ 100 mg/mL (333.00 mM)

* “≥” means soluble, but saturation unknown.

*

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, 6 months; -20°C, 1 month (protect from light)。-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。

• [1]. Fan W, et al. Prolyl endopeptidase inhibitors from the underground part of Rhodiola sachalinensis. Chem Pharm Bull (Tokyo). 2001 Apr;49(4):396-401.

  [2]. Ju L, et al. Salidroside, A Natural Antioxidant, Improves β-Cell Survival and Function via Activating AMPK Pathway. Front Pharmacol. 2017 Oct 18;8:749.

  [3]. Chen X, et al. Salidroside alleviates cachexia symptoms in mouse models of cancer cachexia via activatingmTOR signalling. J Cachexia Sarcopenia Muscle. 2016 May;7(2):225-32.

  [4]. Wu L, et al. Salidroside Protects against MPP+-Induced Neuronal Injury through DJ-1-Nrf2 Antioxidant Pathway. Evid Based Complement Alternat Med. 2017;2017:5398542.

  [5]. Li R, et al. Salidroside Protects Dopaminergic Neurons by Enhancing PINK1/Parkin-Mediated Mitophagy. Oxid Med Cell Longev. 2019 Sep 10;2019:9341018.

SH-SY5Y cells are seeded in 96-well plates at 1×10⁴ cells per well. After the treatment with Salidroside (25-100 μM) and MPP+, cell viability is measured by MTT assay. Briefly, cells are incubated with 500 μg/mL MTT at 37°C for 4 h. After that, the medium is removed and 150 μL DMSO is added and shaking is conducted for 10 min. Absorbance is measured at 570 nm in a microplate reader and the results are expressed as folds of control^[3].

MCE has not independently confirmed the accuracy of these methods. They are for reference only.

Mice^[4]
The 4-week-old male C57BL/6 mice are fed a high-fat diet (HFD) (n=16) or normal chow diet (n=8). After 10 weeks of the HFD, salidroside intervention (100 mg/kg/day) is initiated by gavage once a day for 5 weeks. The control groups are given vehicle (saline). The 4-week-old male C57Bl/KsJ (BKS) mice (wild type, n=8) and BKS.Cg-Dock7m +/+ Leprdb/J (db/db) mice (n=16) are used. Salidroside (100 mg/kg/day) is administrated orally by gavage once a day for 5 weeks. The control groups are given vehicle (saline). Fasting blood glucose and body weight of mice are monitored every 5 days. Glucose measurements are performed on blood drawn from the tail vein using a Glucometer.

MCE has not independently confirmed the accuracy of these methods. They are for reference only.

• [1]. Fan W, et al. Prolyl endopeptidase inhibitors from the underground part of Rhodiola sachalinensis. Chem Pharm Bull (Tokyo). 2001 Apr;49(4):396-401.

  [2]. Ju L, et al. Salidroside, A Natural Antioxidant, Improves β-Cell Survival and Function via Activating AMPK Pathway. Front Pharmacol. 2017 Oct 18;8:749.

  [3]. Chen X, et al. Salidroside alleviates cachexia symptoms in mouse models of cancer cachexia via activatingmTOR signalling. J Cachexia Sarcopenia Muscle. 2016 May;7(2):225-32.

  [4]. Wu L, et al. Salidroside Protects against MPP+-Induced Neuronal Injury through DJ-1-Nrf2 Antioxidant Pathway. Evid Based Complement Alternat Med. 2017;2017:5398542.

  [5]. Li R, et al. Salidroside Protects Dopaminergic Neurons by Enhancing PINK1/Parkin-Mediated Mitophagy. Oxid Med Cell Longev. 2019 Sep 10;2019:9341018.