Overexpression of Discoidin domain receptor 1 (DDR1) is known to enhance the malignancy of breast cancer considerably. This study reports the identification of a potent DDR1 inhibitor, Nilotinib, for the treatment of breast cancer. MTT assay was used to evaluate the inhibitory activity of Nilotinib and meantime we used flow cytometry to evaluate the pro-apoptotic activity of Nilotinib against MCF-7 and MDA-MB-231. Expression of DDR1 was manipulated in MDA-MB-231 and MCF-7 cell lines with low-level DDR1 expression by transfecting with plasmids containing shRNA. The effect of DDR1 or treatment with Nilotinib on cell migration was assayed. The expression of p-DDR1, DDR1, p-ERK1/2, ERK1/2 and E-cadherin, Vimentin, Snail1, and caspase 3 were detected by western blot and immunofluorescent staining. Nilotinib against MCF-7 -MBapoptotic cell death. After co-culturing with Nilotinib (500 nM), apoptosis rate is 29.60 % ± 2.19% and 18.75 % ± 2.30%, respectively. Moreover, Nilotinib effectually blocked the cellular migration of MCF-7. Interestingly, the knock-down DDR1 could significantly block the migration of breast cancer, meantime the sensitivity of MCF-7 and MDA-MB-231 to Nilotinib was reduced. Targeting DDR1 therapeutically could potentially affect survival and influence metabolism in breast cancer, and Nilotinib could be used as a candidate for the treatment of breast cancer.

Background: Overexpression of Discoidin domain receptor 1(DDR1) is known to enhance the malignancy of breast cancer considerably. This study reports the identification of a potent DDR1 inhibitor, Nilotinib for the treatment of breast cancer. Methods: MTT assay was used to evaluate the inhibitory activity of Nilotinib and meantime we used flow cytometry to evaluate the pro-apoptotic activity of Nilotinib against MCF-7 and MDA-MB-231. Expression of DDR1 was manipulated in MCF-7 cell lines with low level DDR1 expression by transfecting with plasmids containing by shRNA. The effect of DDR1 or treatment with Nilotinib on cell migration was assayed. The expression of p-DDR1, DDR1, p-ERK1/2, ERK1/2 and E-cadherin，Vimentin, Snail1 were detected by western blot and immuno-fluorescent staining . Results: Nilotinib against MCF-7 (IC 50 =0.403 μM) and MDA-MB-231 (IC 50 =0.819 μM) and also indicated induced apoptotic cell death after co-cuturing with Nilotinib (500 nM), apoptosis rate is 29.60 % ± 2.19% and 18.75 % ± 2.30% respective ly. Moreover, Nilotinib effectually blocked cellular migration of MCF-7. Interestingly, Knock-down DDR1 could significantly block the migration of breast cancer, meantime the sensitivity of Nilotinib to MCF-7 was reduced. Conclusion: Targeting DDR1 therapeutically could potentially affect survival and influence metabolism in breast cancer, and Nilotinib could as a candidate for the treatment of breast cancer.

Background: Overexpression of Discoidin domain receptor 1(DDR1) is known to enhance the malignancy of breast cancer considerably. This study reports the identification of a potent DDR1 inhibitor, Nilotinib for the treatment of breast cancer. Methods: MTT assay was used to evaluate the inhibitory activity of Nilotinib and meantime we used flow cytometry to evaluate the pro-apoptotic activity of Nilotinib against MCF-7 and MDA-MB-231. Expression of DDR1 was manipulated in MCF-7 cell lines with low level DDR1 expression by transfecting with plasmids containing by shRNA. The effect of DDR1 or treatment with Nilotinib on cell migration was assayed. The expression of p-DDR1, DDR1, p-ERK1/2, ERK1/2 and E-cadherin，Vimentin, Snail1 were detected by western blot and immuno-fluorescent staining . Results: Nilotinib against MCF-7 (IC 50 =0.403 μM) and MDA-MB-231 (IC 50 =0.819 μM) and also indicated induced apoptotic cell death after co-cuturing with Nilotinib (500 nM), apoptosis rate is 29.60 % ± 2.19% and 18.75 % ± 2.30% respective ly. Moreover, Nilotinib effectually blocked cellular migration of MCF-7. Interestingly, Knock-down DDR1 could significantly block the migration of breast cancer, meantime the sensitivity of Nilotinib to MCF-7 was reduced. Conclusion: Targeting DDR1 therapeutically could potentially affect survival and influence metabolism in breast cancer, and Nilotinib could as a candidate for the treatment of breast cancer.

Background: Overexpression of Discoidin domain receptor 1(DDR1) is known to enhance the malignancy of breast cancer considerably. This study reports the identification of a potent DDR1 inhibitor, Nilotinib for the treatment of breast cancer. Methods: MTT assay was used to evaluate the inhibitory activity of Nilotinib and meantime we used flow cytometry to evaluate the pro-apoptotic activity of Nilotinib against MCF-7 and MDA-MB-231. Expression of DDR1 was manipulated in MCF-7 cell lines with low level DDR1 expression by transfecting with plasmids containing by shRNA. The effect of DDR1 or treatment with Nilotinib on cell migration was assayed. The expression of p-DDR1, DDR1, p-ERK1/2, ERK1/2 and E-cadherin，Vimentin, Snail1 were detected by western blot and immuno-fluorescent staining.Results: Nilotinib against MCF-7 (IC50=0.403 μM) and MDA-MB-231 (IC50=0.819 μM) and also indicated induced apoptotic cell death after co-cuturing with Nilotinib (500 nM), apoptosis rate is 29.60 % ± 2.19% and 18.75 % ± 2.30% respectively. Moreover, Nilotinib effectually blocked cellular migration of MCF-7. Interestingly, Knock-down DDR1 could significantly block the migration of breast cancer, meantime the sensitivity of MCF-7 to Nilotinib was reduced.Conclusion: Targeting DDR1 therapeutically could potentially affect survival and influence metabolism in breast cancer, and Nilotinib could as a candidate for the treatment of breast cancer.

Background: Overexpression of Discoidin domain receptor 1(DDR1) is known to enhance the malignancy of breast cancer considerably. This study reports the identification of a potent DDR1 inhibitor, Nilotinib for the treatment of breast cancer. Methods: MTT assay was used to evaluate the inhibitory activity of Nilotinib and meantime we used flow cytometry to evaluate the pro-apoptotic activity of Nilotinib against MCF-7 and MDA-MB-231. Expression of DDR1 was manipulated in MCF-7 cell lines with low level DDR1 expression by transfecting with plasmids containing by shRNA. The effect of DDR1 or treatment with Nilotinib on cell migration was assayed. The expression of p-DDR1, DDR1, p-ERK1/2, ERK1/2 and E-cadherin，Vimentin, Snail1 were detected by western blot and immuno-fluorescent staining . Results: Nilotinib against MCF-7 (IC 50 =0.403 μM) and MDA-MB-231 (IC 50 =0.819 μM) and also indicated induced apoptotic cell death after co-cuturing with Nilotinib (500 nM), apoptosis rate is 29.60 % ± 2.19% and 18.75 % ± 2.30% respective ly. Moreover, Nilotinib effectually blocked cellular migration of MCF-7. Interestingly, Knock-down DDR1 could significantly block the migration of breast cancer, meantime the sensitivity of Nilotinib to MCF-7 was reduced. Conclusion: Targeting DDR1 therapeutically could potentially affect survival and influence metabolism in breast cancer, and Nilotinib could as a candidate for the treatment of breast cancer.