Effects of L.   paracasei subp. paracasei X12 on cell cycle of colon cancer HT-29 cells and regulation of mTOR signalling pathway

2016 ◽  
Vol 21 ◽  
pp. 431-439 ◽  
Author(s):  
Lei Huang ◽  
Yu-Juan Shan ◽  
Can-Xia He ◽  
Ming-Hua Ren ◽  
Pei-Jun Tian ◽  
...  
Keyword(s):  
Cell Cycle ◽  
Colon Cancer ◽  
Signalling Pathway ◽  
Ht 29 ◽  
Mtor Signalling ◽  
Mtor Signalling Pathway

scholarly journals Cucurbitacin E inhibits osteosarcoma cells proliferation and invasion through attenuation of PI3K/AKT/mTOR signalling pathway

2016 ◽  
Vol 36 (6) ◽  
Author(s):  
Ying Wang ◽  
Shumei Xu ◽  
Yaochi Wu ◽  
Junfeng Zhang
Keyword(s):  
Cell Cycle ◽  
Cell Growth ◽  
Signalling Pathway ◽  
Cell Counting ◽  
Cell Cycle Distribution ◽  
Mesenchymal Transition ◽  
Cucurbitacin E ◽  
Mtor Signalling ◽  
Mtor Signalling Pathway

Cucurbitacin E (CuE), a potent member of triterpenoid family isolated from plants, has been confirmed as an antitumour agent by inhibiting proliferation, migration and metastasis in diverse cancer. However, the effects and mechanisms of CuE on osteosarcoma (OS) have not been well understood. The present study aimed to test whether CuE could inhibit growth and invasion of OS cells and reveal its underlying molecular mechanism. After various concentrations of CuE treatment, the anti-proliferative effect of CuE was assessed using the cell counting Kit-8 assay. Flow cytometry analysis was employed to measure apoptosis of OS cells. Cell cycle distribution was analysed by propidium iodide staining. Transwell assay was performed to evaluate the effect of CuE on invasion potential of OS cells. The protein levels were measured by western blot. In addition, the potency of CuE on OS cells growth inhibition was assessed in vivo. Our results showed that CuE inhibited cell growth and invasion, induced a cell cycle arrest and triggered apoptosis and modulated the expression of cell growth, cell cycle and cell apoptosis regulators. Moreover, CuE inhibited the PI3K/Akt/mTOR pathway and epithelial–mesenchymal transition (EMT), which suppressed the invasion and metastasis of OS. In addition, we also found that CuE inhibited OS cell growth in vivo. Taken together, our study demonstrated that CuE could inhibit OS tumour growth and invasion through inhibiting the PI3K/Akt/mTOR signalling pathway. Our findings suggest that CuE can be considered to be a promising anti-cancer agent for OS.

scholarly journals Pro-Apoptotic Activity of Artichoke Leaf Extracts in Human HT-29 and RKO Colon Cancer Cells

2021 ◽  
Vol 18 (8) ◽  
pp. 4166
Author(s):  
Milena Villarini ◽  
Mattia Acito ◽  
Raffaella di Vito ◽  
Samuele Vannini ◽  
Luca Dominici ◽  
...  
Keyword(s):  
Cell Cycle ◽  
Colon Cancer ◽  
Chlorogenic Acid ◽  
Cancer Cells ◽  
Herbaceous Plant ◽  
Colon Cancer Cells ◽  
Leaf Extracts ◽  
Caffeoylquinic Acids ◽  
Induction Of Apoptosis ◽  
Ht 29

(1) Background: Cynara cardunculus L. subsp. scolymus (L.) Hegi, popularly known as artichoke, is an herbaceous plant belonging to the Asteraceae family. Artichoke leaf extracts (ALEs) have been widely used in traditional medicine because of their hepatoprotective, cholagogic, hypoglycaemic, hypolipemic and antibacterial properties. ALEs are also recognized for their antioxidative and anti-inflammatory activities. In this study, we evaluated the cytotoxic, genotoxic, and apoptotic activities, as well as effect on cell growth of ALEs on human colon cancer HT-29 and RKO cells. HT-29 and RKO cells exhibit a different p53 status: RKO cells express the wild-type protein, whereas HT-29 cells express a p53-R273H contact mutant. (2) Methods: Four different ALEs were obtained by sequential extraction of dried artichoke leaves; ALEs were characterized for their content in chlorogenic acid, cynaropicrin, and caffeoylquinic acids. HT-29 and RKO cells were used for in vitro testing (i.e., cytotoxicity and genotoxicity assessment, cell cycle analysis, apoptosis induction). (3) Results: Two out of the four tested ALEs showed marked effects on cell vitality toward HT-29 and RKO tumour cells. The effect was accompanied by a genotoxic activity exerted at a non-cytotoxic concentrations, by a significant perturbation of cell cycle (i.e., with increase of cells in the sub-G1 phase), and by the induction of apoptosis. (4) Conclusions: ALEs rich in cynaropicrin, caffeoylquinic acids, and chlorogenic acid showed to be capable of affecting HT-29 and RKO colon cancer cells by inducing favourable biological effects: cell cycle perturbation, activation of mitochondrial dependent pathway of apoptosis, and the induction of genotoxic effects probably mediated by the induction of apoptosis. Taken together, these results weigh in favour of a potential cancer chemotherapeutic activity of ALEs.

scholarly journals Identification of mutations in the PI3K-AKT-mTOR signalling pathway in patients with macrocephaly and developmental delay and/or autism

2017 ◽  
Vol 8 (1) ◽  
Author(s):  
Kit San Yeung ◽  
Winnie Wan Yee Tso ◽  
Janice Jing Kun Ip ◽  
Christopher Chun Yu Mak ◽  
Gordon Ka Chun Leung ◽  
...  
Keyword(s):  
Developmental Delay ◽  
Signalling Pathway ◽  
Mtor Signalling ◽  
Mtor Signalling Pathway
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