Anti-cancer activity of the ethylacetate fraction from Orostachys japonicus for modulation of the signaling pathway in HepG2 human hepatoma cells

Kim

Food Science & Nutrition

2018

Self Cite

Orostachys japonicus (O. japonicus) is utilized as a traditional medicine for patients with various diseases. This study investigated the effect of the ethyl acetate fraction from O. japonicus extract (OJE) on the growth inhibition of OVCAR‐3 human ovarian cancer cells demonstrated to inhibit cell growth and arrest the cell cycle in OVCAR‐3 cells by blocking the sub‐G1 phase and decreasing cyclin E1/CDK2 expression. Cell cycle arrest was connected to the increased expression of the cell cycle regulating factors p53 and p21. Apoptosis was initiated through the intrinsic pathway by up‐regulating the expression of the Bcl‐2/Bax ratio and down‐regulating the expression of pro‐caspase‐3. Furthermore, OJE treatment elicited p‐p38 activation and p‐ERK1/2 inhibition. In conclusion, our results demonstrated that OJE reduced the growth of OVCAR‐3 human ovarian cancer cells mediated by arrest of the cell cycle and regulation of MAPK signaling pathways.

Section: Resultsmentioning

confidence: 99%

“…Component analysis of the EtOAc fraction (OJE) has previously been described by our team (Lee et al., 2014; Ryu et al., 2012). …”

Section: Methodsmentioning

confidence: 99%

Section: Preparation Of Oje Fraction From O Japonicusmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Orostachys japonicus induce p53‐dependent cell cycle arrest through the MAPK signaling pathway in OVCAR‐3 human ovarian cancer cells

Kim

Food Science & Nutrition

2018

Self Cite

“…Orostachys japonicus is a polygamous plant in the family Crassulaceae that has been used as a medicinal herb for fever, hemostasis, antidote, inflammation, and cancer (Kim, Choi, Park, Lee, & Jung, ; Kwon & Han, ; Lee, Lee, Kim, Kim, et al, ; Lee, Ryu, et al, ; Lee, Lee, Kim, Suk, et al, ; Ryu, Lee, Lee, & Lee, ; Yoon et al, ). The previous studies have reported that O. japonicus has beneficial ingredients, such as flavonoids, triterpene, and galactic acid (Park, Han, Park, Choi, & Choi, ).…”

Section: Introductionmentioning

confidence: 99%

Orostachys japonicus extract inhibits the lipopolysaccharide‐induced pro‐inflammatory factors by suppression of transcription factors

Food Science & Nutrition

2020

Orostachys japonicus (O. japonicus) was extracted with ethanol (EtOH) and sequentially separated with organic solvents, including n‐hexane (Hex), dichloromethane (DCM), ethyl acetate (EtOAc), n‐butanol (BuOH), and water (H2O). All the fractions were confirmed for anti‐inflammatory activity in an inflammatory condition. The DCM fraction showed the highest anti‐inflammatory ability. Here, we examined the effect of DCM fraction and investigated the intracellular signaling pathways in LPS‐stimulated RAW 264.7 macrophage cells. The DCM fraction significantly inhibited the mRNA levels of pro‐inflammatory mediators and cytokines including iNOS, COX‐2, IL‐1β, IL‐2, IL‐6, and IP‐10 in LPS‐stimulated cells. Also, the treatment of DCM fraction excellently reduced the expression of the proteins of AP‐1 (phospho‐c‐Jun and phospho‐c‐Fos) and phospho‐IRF3 as transcription factors. As a result, it suppressed LPS‐induced inflammatory mediator and cytokines via inhibition of transcription factors. In conclusion, our data demonstrated that DCM fraction has a strong anti‐inflammatory activity that improves the inflammatory state.

Chemistry & Biodiversity

Purification of Polysaccharides from Orostachys cartilaginous Cell Cultures by Macroporous Resin Absorption and Bioactivities of the Purified Polysaccharides

Han

et al. 2022

Orostachys cartilaginous is a traditional herbal medicine and its cell cultures contain large amounts of polysaccharides. To utilize the cultured O. cartilaginous cells, this study purified the crude polysaccharides of O. cartilaginous cells by macroporous resin absorption and optimized the purification process in the experiment of orthogonal design with four factors (sample concentration and volume, and eluent concentration and volume) and three levels; the antibacterial and anti‐cancer effects of the purified polysaccharides (OTP) were further examined. The results showed that polysaccharide purity reached 95 % in the optimized group, i. e., 1.6 mg/mL of sample (crude polysaccharides) concentration, 3.0 bed volume (BV) of sample volume, 65 % eluent (ethanol) concentration, and 3.0 BV of eluent volume. In the antibacterial experiment, the growth of three bacterial species, i. e., Pseudomonas aeruginosa, Staphylococcus aureus, and Bacillus subtilis was inhibited by OTP, whereas that of Escherichia coli was not affected; the largest diameter of the inhibitory zone was found on B. subtilis; the extracellular alkaline phosphatase activity and the electrical conductivity, nucleic acid, and protein levels of B. subtilis increased after OTP treatment, indicating that the inhibition of B. subtilis growth was caused by the leakage of cell contents. In the anti‐cancer experiment, OTP decreased the cell viabilities of the tested human cancer cells, i. e., AGS (gastric cancer), HCT116 (colon cancer), HepG2 (liver cancer), and HeLa (cervical cancer), and the highest inhibitory effect was on HCT116. OTP promoted HCT116 apoptosis and affected the expression of apoptosis‐related proteins, i. e., the expression of B‐cell lymphoma‐2 decreased and that of bcl‐2 associated X protein, cytochrome c, caspase 9 and caspase 3 increased. The findings of the present study suggest that O. cartilaginous cell cultures have a potential application in food or drug production.