An optical pH-sensor integrated microfluidic platform multilayered with bacterial cellulose and gelatin methacrylate to mimic drug-induced lung injury

•Holistic approach to monitor drug-induced lung injury in a dynamic microfluidic platform.•The potential of bacterial cellulose was evaluated as a vascular membrane.•In terms of mechanical and biological aspects and diffusion of monocytes.•Integrated optical pH sensor recorded changes in real-time due to the profibrotic features.•The hallmarks of the drug-induced pulmonary fibrosis were reflected.