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1.	Blockhuys, Stephanie, 1983, et al. (author) X-radiation enhances the collagen type I strap formation and migration potentials of colon cancer cells 2016 In: Oncotarget. - : Impact Journals, LLC. - 1949-2553. ; 7:44, s. 71390-71399 Journal article (peer-reviewed)abstract Rectal cancer treatment still fails with local and distant relapses of the disease. It is hypothesized that radiotherapy could stimulate cancer cell dissemination and metastasis. In this study, we evaluated the effect of X-radiation on collagen type I strap formation potential, i.e. matrix remodeling associated with mesenchymal cell migration, and behaviors of SW480, SW620, HCT116 p53(+/+) and HCT116 p53(-/-) colon cancer cells. We determined a radiation-induced increase in collagen type I strap formation and migration potentials of SW480 and HCT116 p53(+/+). Further studies with HCT116 p53(+/+), indicated that after X-radiation strap forming cells have an increased motility. More, we detected a decrease in adhesion potential and mature integrin beta 1 expression, but no change in non-muscle myosin II expression for HCT116 p53(+/+) after X-radiation. Integrin beta 1 neutralization resulted in a decreased cell adhesion and collagen type I strap formation in both sham and X-radiated conditions. Our study indicates collagen type I strap formation as a potential mechanism of colon cancer cells with increased migration potential after X-radiation, and suggests that other molecules than integrin beta 1 and non-muscle myosin II are responsible for the radiation-induced collagen type I strap formation potential of colon cancer cells. This work encourages further molecular investigation of radiation-induced migration to improve rectal cancer treatment outcome.

Blockhuys, Stephanie, 1983, et al. (author)
X-radiation enhances the collagen type I strap formation and migration potentials of colon cancer cells
2016
In: Oncotarget. - : Impact Journals, LLC. - 1949-2553. ; 7:44, s. 71390-71399
Journal article (peer-reviewed)abstract
- Rectal cancer treatment still fails with local and distant relapses of the disease. It is hypothesized that radiotherapy could stimulate cancer cell dissemination and metastasis. In this study, we evaluated the effect of X-radiation on collagen type I strap formation potential, i.e. matrix remodeling associated with mesenchymal cell migration, and behaviors of SW480, SW620, HCT116 p53(+/+) and HCT116 p53(-/-) colon cancer cells. We determined a radiation-induced increase in collagen type I strap formation and migration potentials of SW480 and HCT116 p53(+/+). Further studies with HCT116 p53(+/+), indicated that after X-radiation strap forming cells have an increased motility. More, we detected a decrease in adhesion potential and mature integrin beta 1 expression, but no change in non-muscle myosin II expression for HCT116 p53(+/+) after X-radiation. Integrin beta 1 neutralization resulted in a decreased cell adhesion and collagen type I strap formation in both sham and X-radiated conditions. Our study indicates collagen type I strap formation as a potential mechanism of colon cancer cells with increased migration potential after X-radiation, and suggests that other molecules than integrin beta 1 and non-muscle myosin II are responsible for the radiation-induced collagen type I strap formation potential of colon cancer cells. This work encourages further molecular investigation of radiation-induced migration to improve rectal cancer treatment outcome.

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