Animal13neck: Створена сторінка: Tie1Cre transgenic mice are well characterized and have been shown to have extensive Cre activity in the majority of endothelial cells 28. By crossing ��6-f...

2017-05-15T03:51:18Z

Створена сторінка: Tie1Cre transgenic mice are well characterized and have been shown to have extensive Cre activity in the majority of endothelial cells 28. By crossing ��6-f...

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Tie1Cre transgenic mice are well characterized and have been shown to have extensive Cre activity in the majority of endothelial cells 28. By crossing ��6-floxed mice with Tie1Cre mice, we generated ��6-floxed/floxed-Tie1Cre+ (��6fl/fl-Tie1Cre+) mice. ��6fl/fl-Tie1Cre+ mice were born in normal Mendelian ratios. PCR of endothelial cells from ��6fl/fl-Tie1Cre+ [http://en.wikipedia.org/wiki/Diglyceride diglyceride] mice generated bands at 700 bp for the presence of the Cre insert, 154 bp for the ��6-floxed allele, and 120 bp for the wild-type allele (Figure 2a). Together with flow cytometric, immunofluorescence, and western blot analyses, these data confirmed that ��6-integrin expression was deleted successfully in the endothelial cells isolated from the ��6fl/fl-Tie1Cre+ mice (Figures 2b�C2d). Age-matched ��6fl/fl-Tie1Cre? and ��6fl/fl-Tie1-Cre+ mice were injected subcutaneously with either 1 �� 106 B16F0 murine melanoma cells or 0.5 �� 106 Lewis lung carcinoma (LLC) cells, and tumour size was measured at 10 or 12 days, respectively. Both B16F0 and LLC tumour sizes were significantly larger in ��6fl/fl-Tie1Cre+ mice than in ��6fl/fl-Tie1Cre? controls (**p [http://www.selleckchem.com/products/AZD8055.html AZD8055 nmr] that there was a significant increase in tumour blood vessel density in ��6fl/fl-Tie1Cre+ mice compared with ��6fl/fl-Tie1Cre? controls (*p [http://www.selleckchem.com/products/S31-201.html www.selleckchem.com/products/S31-201.html] unchallenged skin of ��6fl/fl-Tie1Cre? and ��6fl/fl-Tie1Cre+ mice showed no difference in vascularization (Supporting information, Supplementary Figure 1). To confirm the loss of ��6 in tumour blood vessels in vivo, cryosections of B16F0 tumours from ��6fl/fl-Tie1Cre? and ��6fl/fl-Tie1Cre+ mice were double-immunostained for ��6-integrin and a blood vessel marker. Since all the other blood vessel marker antibodies were the same species as the ��6 antibody, we used ��SMA to detect blood vessels. The staining revealed that ��6-integrin was significantly reduced in the ��6fl/fl-Tie1Cre+ tumour blood vessels (*p

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Animal13neck: Створена сторінка: Tie1Cre transgenic mice are well characterized and have been shown to have extensive Cre activity in the majority of endothelial cells 28. By crossing ��6-f...