Limited effects of Muc1 deficiency on mouse adenovirus type 1 respiratory infection

作者：Nguyen Y; Procario Megan C; Ashley Shanna L; O'Neal Wanda K; Pickles Raymond J; Weinberg Jason B^*

来源：Virus Research, 2011, 160(1-2): 351-359.

DOI：10.1016/j.virusres.2011.07.012

• Mucin
• Muc1
• Adenovirus

Muc1 (MUC1 in humans) is a membrane-tethered mucin that exerts anti-inflammatory effects in the lung during bacterial infection. Mud l and other mucins are also likely to form a protective barrier in the lung. We used mouse adenovirus type 1 (MAV-1, also known as MAdV-1) to determine the role of Muc1 in the pathogenesis of an adenovirus in its natural host. Following intranasal inoculation of wild type mice, we detected increased TNF-alpha, a cytokine linked to Muc1 production, but no consistent changes in the production of lung Mud. Muc5ac or overall lung mucus production. Viral loads were modestly higher in the lungs of Muc1(-/-) mice compared to Muc1(+/+). mice at several early time points but decreased to similar levels by 14 days post infection in both groups. However, cellular inflammation and the expression of CXCL1, CCL5, and CCL2 did not significantly differ between Muc1(-/-) and Muc1(+/+) mice. Our data therefore suggest that Muc1 may contribute to a physical barrier that protects against MAV-1 respiratory infection. However, our data do not reveal an anti-inflammatory effect of Muc1 that contributes to MAV-1 pathogenesis.

• 出版日期2011-9