https://www.preprints.org/manuscript/202008.0260/v1 The Potential Role and Regulatory Mechanisms of MUC5AC in Chronic Obstructive Pulmonary Disease Jingyuan Li and Zuguang Ye * Version 1 : Received: 10 August 2020 / Approved: 11 August 2020 / Online: 11 August 2020 (09:20:57 CEST)