scholarly journals DNAzyme as an efficient tool to modulate invasiveness of human carcinoma cells.

2010 ◽  
Vol 57 (3) ◽  
Author(s):  
Magdalena Wiktorska ◽  
Izabela Papiewska-Pająk ◽  
Andrzej Okruszek ◽  
Izabela Sacewicz-Hofman ◽  
Jolanta Niewiarowska
Keyword(s):  
Cancer Cells ◽  
Cell Lines ◽  
Carcinoma Cell ◽  
Carcinoma Cells ◽  
Integrin Subunit ◽  
Β1 Integrin ◽  
Adhesive Properties ◽  
Human Carcinoma ◽  
Carcinoma Cell Lines ◽  
Β1 Integrins

In this study we evaluated efficiency of DNAzymes to modulate motility of cancer cells, an important factor in the progression and metastasis of cancers. For this purpose we targeted β1 integrins that are predominant adhesive receptors in various carcinoma cell lines (CX1.1, HT29, LOVO, LS180, PC-3). To evaluate invasiveness of cancer cells, we used a transwell migration assay that allowed analyzing chemotactic migration of colon carcinoma cell lines across an ECM-coated membrane. Their adhesive properties were also characterized by the analysis of adhesion to fibronectin, laminin and collagen. In addition, the expression of major integrin subunits, selected intact β1 integrins, and other adhesive receptors (ICAM, E-selectin, uPAR) was analyzed by flow cytometry. Inhibition of β1 integrin expression by DNAzyme to β1 mRNA almost abolished the invasiveness of the CX1.1, HT29, LS180, LOVO and PC-3 cells in vitro. These data show that DNAzymes to β1 integrin subunit can be used to inhibit invasiveness of carcinoma cells.

scholarly journals E-cadherin-mediated cell-cell adhesion prevents invasiveness of human carcinoma cells.

1991 ◽  
Vol 113 (1) ◽  
pp. 173-185 ◽  
Author(s):  
U H Frixen ◽  
J Behrens ◽  
M Sachs ◽  
G Eberle ◽  
B Voss ◽  
...  
Keyword(s):  
Cell Adhesion ◽  
Cell Lines ◽  
Carcinoma Cell ◽  
Northern Blotting ◽  
Carcinoma Cells ◽  
Specific Cell ◽  
Human Carcinoma ◽  
Carcinoma Cell Lines ◽  
E Cadherin ◽  
Cell Cell

The ability of carcinomas to invade and to metastasize largely depends on the degree of epithelial differentiation within the tumors, i.e., poorly differentiated being more invasive than well-differentiated carcinomas. Here we confirmed this correlation by examining various human cell lines derived from bladder, breast, lung, and pancreas carcinomas. We found that carcinoma cell lines with an epithelioid phenotype were noninvasive and expressed the epithelium-specific cell-cell adhesion molecule E-cadherin (also known as Arc-1, uvomorulin, and cell-CAM 120/80), as visualized by immunofluorescence microscopy and by Western and Northern blotting, whereas carcinoma cell lines with a fibroblastoid phenotype were invasive and had lost E-cadherin expression. Invasiveness of these latter cells could be prevented by transfection with E-cadherin cDNA and was again induced by treatment of the transfected cells with anti-E-cadherin mAbs. These findings indicate that the selective loss of E-cadherin expression can generate dedifferentiation and invasiveness of human carcinoma cells, and they suggest further that E-cadherin acts as an invasion suppressor.

scholarly journals The expression of the GATA6 gene in oral carcinoma cell lines

2021 ◽  
Vol 19 (1) ◽  
Author(s):  
Cheng-Lin Xu ◽  
Wei-Qun Guan ◽  
Xue-Ying Wang
Keyword(s):  
Cell Lines ◽  
Carcinoma Cell ◽  
Carcinoma Cells ◽  
Expression Levels ◽  
Carcinoma Cell Lines ◽  
Human Tongue ◽  
Adenoid Cystic ◽  
Significant Difference ◽  
Oral Epithelial ◽  
Gata6 Gene

Abstract Background This study aimed to investigate the expression level of the GATA6 gene in different oral cancer cells. Methods In this study, we sub-cultured normal oral epithelial cell lines HOK, human tongue squamous cell carcinoma cell lines CAL-27 and SCC-4, and human salivary gland adenoid cystic carcinoma cell lines SACC-LM and SACC-83. Subsequently, we used reverse transcription-polymerase chain reaction RT-PCR and Western blot methods to detect the mRNA and the protein expressions of GATA6 in normal oral epithelial cells, human tongue squamous cell carcinoma cells, and human salivary gland adenoid cystic carcinoma cells. Results The results of this study showed that the mRNA expression levels of GATA6 in CAL-27, SCC-4, and SACC-LM cells were significantly increased when compared with the HOK cells. However, the mRNA expression level of GATA6 in the SACC-83 cells had no significant difference compared with the HOK cells. The protein expression levels of GATA6 in the SCC-4 and SACC-LM cells were, however, significantly increased whereas the protein expression levels of GATA6 in the CAL-27 and SACC-83 cells had no significant difference when compared with the HOK cells. Conclusion The GATA6 gene may be related to the occurrence and progression of certain oral cancers.

Calcium-binding proteins in human carcinoma cell-lines

Cell Calcium ◽  
1984 ◽  
Vol 5 (3) ◽  
pp. 309
Author(s):  
Gaby E. Pfyffer ◽  
Gisela Haemmerli ◽  
Peter Sträuli ◽  
Claus W. Heizmann
Keyword(s):  
Cell Lines ◽  
Calcium Binding ◽  
Binding Proteins ◽  
Carcinoma Cell ◽  
Calcium Binding Proteins ◽  
Human Carcinoma ◽  
Carcinoma Cell Lines ◽  
Human Carcinoma Cell

scholarly journals Lack of radiosensitization after paclitaxel treatment of three human carcinoma cell lines

Cancer ◽  
1995 ◽  
Vol 75 (9) ◽  
pp. 2262-2268 ◽  
Author(s):  
Jannifer S. Stromberg ◽  
Yong J. Lee ◽  
Elwood P. Armour ◽  
Alvaro A. Martinez ◽  
Peter M. Corry
Keyword(s):  
Cell Lines ◽  
Carcinoma Cell ◽  
Human Carcinoma ◽  
Carcinoma Cell Lines ◽  
Human Carcinoma Cell ◽  
Paclitaxel Treatment

Suppression of growth in vitro and tumorigenicity in vivo of human carcinoma cell lines by transfectedp16INK4

1996 ◽  
Vol 16 (1) ◽  
pp. 53-60 ◽  
Author(s):  
Elisa A. Spillare ◽  
Aikou Okamoto ◽  
Koichi Hagiwara ◽  
Douglas J. Demetrick ◽  
Manuel Serrano ◽  
...  
Keyword(s):  
Cell Lines ◽  
Carcinoma Cell ◽  
Human Carcinoma ◽  
Carcinoma Cell Lines ◽  
Human Carcinoma Cell

Characterization of stem cell–like cancer cells in immune-competent mice

Blood ◽  
2006 ◽  
Vol 108 (12) ◽  
pp. 3906-3912 ◽  
Author(s):  
Jorg A. Kruger ◽  
Charles D. Kaplan ◽  
Yunping Luo ◽  
He Zhou ◽  
Dorothy Markowitz ◽  
...  
Keyword(s):  
Stem Cell ◽  
Cancer Cells ◽  
Cell Lines ◽  
Carcinoma Cell ◽  
Side Population ◽  
Carcinoma Cell Lines ◽  
Tumorigenic Potential ◽  
4T1 Cells

AbstractRecently, the cancer stem cell hypothesis has gained significant recognition as the descriptor of tumorigenesis. Although previous studies relied on transplanting human or rat tumor cells into immunecompromised mice, our study used the Hoechst 33342 dye–based side population (SP) technique to isolate and transplant stem cell–like cancer cells (SCLCCs) from the 4T1 and NXS2 murine carcinoma cell lines into the immune-competent microenvironment of syngeneic mice. 4T1 cells displayed an SP of 2% with a Sca-1highc-Kit–CD45– phenotype, whereas NXS2 cells contained an SP of 0.2% with a Sca-1highCD24highc-Kit–CD45–GD high2 phenotype. Reverse transcription–polymerase chain reaction (RT-PCR) further revealed up-regulation in SP cells of ABCG2, Sca-1, Wnt-1, and TGF-β2. Additionally, 4T1 and NXS2 SP cells exhibited increased resistance to chemotherapy, and 4T1 SP cells also showed an increased ability to efflux doxorubicin, which correlated with a selective increase in the percentage of SP cells found in the tumors of doxorubicin-treated mice. Most importantly, SP cells showed a markedly higher repopulation and tumorigenic potential in vivo, which correlated with an increased number of cells in the SP compartment of SP-derived tumors. Taken together, these results show that we successfully characterized SCLCCs from 2 murine carcinoma cell lines in the immune-competent microenvironment of syngeneic mice.

scholarly journals Interleukin-2 expression in human carcinoma cell lines and its role in cell cycle progression

Oncogene ◽  
2000 ◽  
Vol 19 (4) ◽  
pp. 514-525 ◽  
Author(s):  
Torsten E Reichert ◽  
Shigeki Nagashima ◽  
Yoshiro Kashii ◽  
Joanna Stanson ◽  
Gui Gao ◽  
...  
Keyword(s):  
Cell Cycle ◽  
Cell Lines ◽  
Cell Cycle Progression ◽  
Carcinoma Cell ◽  
Interleukin 2 ◽  
Cycle Progression ◽  
Human Carcinoma ◽  
Carcinoma Cell Lines ◽  
Human Carcinoma Cell
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