scholarly journals Downregulation of the Cyclin D1/Cdk4 Complex Occurs during Resveratrol-Induced Cell Cycle Arrest in Colon Cancer Cell Lines

2001 ◽  
Vol 131 (8) ◽  
pp. 2197-2203 ◽  
Author(s):  
Freya Wolter ◽  
Bora Akoglu ◽  
Antje Clausnitzer ◽  
Jürgen Stein
Keyword(s):  
Cell Cycle ◽  
Colon Cancer ◽  
Cyclin D1 ◽  
Cell Cycle Arrest ◽  
Cell Lines ◽  
Cancer Cell ◽  
Cancer Cell Lines ◽  
Colon Cancer Cell ◽  
Cycle Arrest ◽  
Colon Cancer Cell Lines

scholarly journals β-Lapachone Inhibits Lung Metastasis of Colorectal Cancer by Inducing Apoptosis of CT26 Cells

2016 ◽  
Vol 16 (4) ◽  
pp. 585-596 ◽  
Author(s):  
Ji-Ye Kee ◽  
Yo-Han Han ◽  
Jinbong Park ◽  
Dae-Seung Kim ◽  
Jeong-Geon Mun ◽  
...  
Keyword(s):  
Cell Cycle ◽  
Colon Cancer ◽  
Cell Lines ◽  
Cancer Cell ◽  
Lung Metastasis ◽  
Cancer Cell Lines ◽  
Colon Cancer Cell ◽  
Experimental Metastasis ◽  
Colon Cancer Cell Lines ◽  
Metastasis Model

Background: β-Lapachone is a quinone-containing compound found in red lapacho ( Tabebuia impetiginosa, syn. T avellanedae) trees. Lapacho has been used in traditional medicine by several South and Central American indigenous people to treat various types of cancer. The purpose of this study was to investigate the antimetastatic properties of β-lapachone and the underlying mechanisms using colon cancer cells. Methods: This research used metastatic murine colon cancer cell lines, colon 26 (CT26) and colon 38 (MC38). A WST assay, annexin V assay, cell cycle analysis, wound healing assay, invasion assay, western blot analysis, and real-time reverse transcription–polymerase chain reaction were performed to examine the effects of β-lapachone on metastatic phenotypes and molecular mechanisms. The effect of β-lapachone on lung metastasis was assessed in a mouse experimental metastasis model. Results: We found that the inhibition of proliferation of the colon cancer cell lines by β-lapachone was due to the induction of apoptosis and cell cycle arrest. β-Lapachone induced the apoptosis of CT26 cells through caspase-3, -8, and -9 activation; poly(ADP-ribose) polymerase cleavage; and downregulation of the Bcl-2 family in a dose- and time-dependent manner. In addition, a low concentration of β-lapachone decreased the cell migration and invasion by decreasing the expression of matrix metalloproteinases-2 and -9, and increased the expression of tissue inhibitors of metalloproteinases-1 and -2. Moreover, β-lapachone treatment regulated the expression of epithelial-mesenchymal transition markers such as E- and N-cadherin, vimentin, β-catenin, and Snail in CT26 cells. In the mouse experimental metastasis model, β-lapachone significantly inhibited the lung metastasis of CT26 cells. Conclusions: Our results demonstrated the inhibitory effect of β-lapachone on colorectal lung metastasis. This compound may be useful for developing therapeutic agents to treat metastatic cancer.

scholarly journals MicroRNA silencing of CNN1 and CNN2 protein family members regulates biology processes in colorectal cancer by targeting the p53 signal pathway

2020 ◽  
Author(s):  
Fuda Huang ◽  
Mingwei Wei ◽  
Anmin Wang ◽  
Ya Zhang ◽  
Zebang Qin ◽  
...  
Keyword(s):  
Colorectal Cancer ◽  
Cell Cycle ◽  
Colon Cancer ◽  
Cell Lines ◽  
Cancer Cell ◽  
Cancer Cell Lines ◽  
Colon Cancer Cell ◽  
Expression Levels ◽  
Colon Cancer Cell Lines ◽  
Cancer Tissues

Abstract BackgroundCalponin was first defined as a striated muscle troponin T-like protein that binds actin thin filaments to regulate smooth muscle contraction. There are few studies of CNN1 and CNN2 in colorectal cancer, and the roles these two genes play in colorectal cancer cell lines and the mechanisms by which they act are unknown.MethodsWe used immunohistochemistry to identify expression of the two genes in the cancer tissues. RT-PCR was used to measure expression levels of microRNA. W performed western blots to measure changes in signaling pathways in the context of expression interference.Meanwhile, the same method was used to measure binding relationship between the two genes and key pathway proteins. To determine the relationship between microRNA and gene mRNA, we used the reporter gene method. We used the chi-square and t-test methods to analyze the significance and correlations of the data.Results and conclusionsExpression levels of CNN1 were lower in colon cancer tissues than in normal mucosal tissues. After downregulating CNN1, the cell cycle in colon cancer cell lines progressed quickly, and the expression of related pathway proteins also increased. Expression levels of CNN2 were higher in colon cancer tissues, and its downregulation significantly inhibited cell cycle progression in colon cancer cell lines. We confirmed correlations between the expression of microRNA and CNN2 using data analysis.Bars indicate ± standard errors.*p < 0.05; **p < 0.01 compared with the control. The inhibition of the expression of CNN2 mRNA using microRNA was confirmed using western blot. The combination of the two at the mechanism level was also demonstrated using the reporter gene method.

scholarly journals SLC7A5 Promotes Colorectal Cancer Progression by Regulating Cell Cycle and Migration

2021 ◽  
Author(s):  
Baiyou Tang ◽  
Lihua Zhang ◽  
Jing Yu ◽  
Mingjing Peng ◽  
Yu Cheng ◽  
...  
Keyword(s):  
Colorectal Cancer ◽  
Cell Cycle ◽  
Colon Cancer ◽  
Cell Lines ◽  
Cancer Cell ◽  
Cancer Cell Lines ◽  
Colon Cancer Cell ◽  
Functional Enrichment ◽  
Public Database ◽  
Colon Cancer Cell Lines

Abstract Background: Solute carrier family 7 member 5 (SLC7A5) was identified highly expressed and as a key participant in various tumor development; however, the role it played in colorectal cancer remains unclear. Methods and Results: In the current study, the expression of SLC7A5 were systematically mined in public databases and validated by real-time PCR in colon cancer and normal tissues. And then, the co-expression and pathway analysis got from public database, which indicated the potential influence of SLC7A5 for the etiology of colorectal cancer, were evaluated in the colon cancer cell lines by loss of SLC7A5 function experiment, flow cytometry, western blot, and wound healing assay. The results showed that the mRNA expression of SLC7A5 was significantly higher in colorectal cancer tissues than that in the non-tumor controls for GEO and TCGA datasets as well as 40 pairs of Xiangya clinical samples. The functional enrichment analysis based on public database showed that the pathways enriched most were cell cycle and epithelial-to-mesenchymal transition (EMT), and Cyclin D1 (CCND1) were the only gene that had a significant positive correlation with SLC7A5. Loss of SLC7A5 function in colon cancer cell lines could arrest cell cycle at G1 phase by down-regulating CCND1 and CDK2 protein expression, and may reduce cell migration by reversing EMT though upregulation of E-Cadherin and downregulation of zonula occludens-1. Conclusion: SLC7A5 is likely associated with the progression of colon cancer.

scholarly journals Treatment of Breast and Colon Cancer Cell Lines with Anti-Helmintic Benzimidazoles Mebendazole or Albendazole Results in Selective Apoptotic Cell Death

2021 ◽  
Author(s):  
Jakeb SSM Petersen ◽  
Sarah Baird
Keyword(s):  
Colorectal Cancer ◽  
Cell Cycle ◽  
Colon Cancer ◽  
Cell Death ◽  
Cell Cycle Arrest ◽  
Cancer Cell ◽  
Colon Cancer Cell ◽  
Cycle Arrest ◽  
Colon Cancer Cell Lines ◽  
Ht 29

Abstract Purpose: Anti-helmintic drugs mebendazole and albendazole are commonly used to treat a variety of parasitic infestations. They have recently shown some promising results in pre-clinical in vitro and in vivo anti-cancer studies. We compare their efficacy in breast and colon cancer cell lines as well as in non-cancerous cells and elucidate their mechanism of action. Methods: The drugs were screened for cytotoxicity in MDA-MB-231, MCF-7 (breast cancer), HT-29 (colorectal cancer) and mesenchymal stem cells, using the MTT assay. Their effects on the cell cycle, tubulin levels and cell death mechanisms were analysed using flow cytometry and fluorescent microscopy. Results: Mebendazole and albendazole were found to selectively kill cancer cells, being most potent in the colorectal cancer cell line HT-29, with both drugs having IC50 values of less than 1 µM at 48 hours. Both mebendazole and albendazole induced classical apoptosis characterised by caspase-3 activation, phosphatidylserine exposure, DNA fragmentation, mitochondrial membrane permeability and reactive oxygen species production. Cell cycle arrest in the G2/M phase was found, and tubulin polymerisation was disrupted.Conclusion: Mebendazole and albendazole cause selective cancer cell death via a mechanism of classical apoptosis and cell cycle arrest, which involves the destabilisation of microtubules.

scholarly journals Silencing LRH-1 in colon cancer cell lines impairs proliferation and alters gene expression programs

2015 ◽  
Vol 112 (8) ◽  
pp. 2467-2472 ◽  
Author(s):  
James R. Bayrer ◽  
Sridevi Mukkamala ◽  
Elena P. Sablin ◽  
Paul Webb ◽  
Robert J. Fletterick
Keyword(s):  
Gene Expression ◽  
Cell Cycle ◽  
Colon Cancer ◽  
Cell Line ◽  
Cell Lines ◽  
Cancer Cell ◽  
Cancer Cell Lines ◽  
Colon Cancer Cell ◽  
Colon Cancer Cell Lines ◽  
A Cell

Colorectal cancers (CRCs) account for nearly 10% of all cancer deaths in industrialized countries. Recent evidence points to a central role for the nuclear receptor liver receptor homolog-1 (LRH-1) in intestinal tumorigenesis. Interaction of LRH-1 with the Wnt/β-catenin pathway, highly active in a critical subpopulation of CRC cells, underscores the importance of elucidating LRH-1’s role in this disease. Reduction of LRH-1 diminishes tumor burden in murine models of CRC; however, it is not known whether LRH-1 is required for tumorigenesis, for proliferation, or for both. In this work, we address this question through shRNA-mediated silencing of LRH-1 in established CRC cell lines. LRH-1 mRNA knockdown results in significantly impaired proliferation in a cell line highly expressing the receptor and more modest impairment in a cell line with moderate LRH-1 expression. Cell-cycle analysis shows prolongation of G0/G1 with LRH-1 silencing, consistent with LRH-1 cell-cycle influences in other tissues. Cluster analysis of microarray gene expression demonstrates significant genome wide alterations with major effects in cell-cycle regulation, signal transduction, bile acid and cholesterol metabolism, and control of apoptosis. This study demonstrates a critical proproliferative role for LRH-1 in established colon cancer cell lines. LRH-1 exerts its effects via multiple signaling networks. Our results suggest that selected CRC patients could benefit from LRH-1 inhibitors.

Isolation of Cardamonin and Pinostrobin Chalcone from the Rhizomes of Boesenbergia rotunda (L.) Mansf. and their Cytotoxic Effects on H-29 and MDA-MB-231 Cancer Cell Lines

2019 ◽  
Vol 9 (4) ◽  
pp. 341-348 ◽  
Author(s):  
Ibrahim Awad Mohammed ◽  
Muhammad Nadeem Akhtar ◽  
Foo Jhi Biau ◽  
Yin Sim Tor ◽  
Seema Zareen ◽  
...  
Keyword(s):  
Breast Cancer ◽  
Colon Cancer ◽  
Cell Lines ◽  
Cancer Cell ◽  
Breast Cancer Cell ◽  
Chemical Constituents ◽  
Cancer Cell Lines ◽  
Colon Cancer Cell ◽  
Colon Cancer Cell Lines ◽  
Ht 29

<P>Background: Breast cancer and human colon cancer are the most common types of cancer in females and males, respectively. Breast cancer is the most common type of cancer after lung and colon cancers. Natural products are an important source for drug discovery. Boesenbergia rotunda (L.) Mansf. is commonly known as finger root, belonging to the Zingiberaceae family. </P><P> Objective: The aim of this study to isolate some natural compounds from the rhizomes of B. rotunda (L.) Mansf., and to investigate their cytotoxicity against the human triple-negative breast cancer cell (MDA-MB-231) and HT-29 colon cancer cell lines. </P><P> Methods: The dried rhizomes of B. rotunda were extracted with methanol. The methanolic extract was further used for solvent-solvent extraction. Bioassay-guided extraction and isolation of the rhizomes of the B. rotunda exhibited cytotoxic properties of hexane and dichloromethane fractions. </P><P> Results: Six major chemical constituents, pinostrobin (1), pinostrobin chalcone (2), cardamonin (3), 4,5-dihydrokawain (4), pinocembrin (5), and alpinetin (6) were isolated from the rhizomes of the B. rotunda. All the chemical constituents were screened against the human triple-negative breast cancer cell (MDA-MB-231) and HT-29 colon cancer cell lines. The compound cardamonin (3) (IC50 = 5.62&#177;0.61 and 4.44&#177;0.66 &#181;g/mL) and pinostrobin chalcone (2), (IC50 = 20.42&#177;2.23 and 22.51&#177;0.42 μg/mL) were found to be potent natural cytotoxic compounds against MDA-MB-231 and HT-29 colon cancer cell lines, respectively. </P><P> Conclusion: Cardamonin (3) and pinostrobin chalcone (2) were found to be the most potential natural compounds against breast cancer cell line MDA-MB-231 and colon cancer HT-29 cell line.</P>

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