part of part of fibroblast of lung bronchus fibroblast of lung 2015-03-31T21:16:22Z Bronchus fibroblasts of the lung are specialized stromal cells that are located in bronchus tissue and constitute the critical fibrous network that provides structural integrity to the lungs. These cells are pivotal for maintaining the bronchial extracellular matrix (ECM) via synthesis and regulation of diverse components of the ECM, including proteoglycans, collagen, and elastin. In response to lung injuries or during disease states such as chronic obstructive pulmonary disease (COPD) or pulmonary fibrosis, bronchus fibroblasts play an essential role in the wound healing process. They proliferate and differentiate into myofibroblasts, distinguishing themselves with the synthesis of alpha-smooth muscle actin (α-SMA). The migration, proliferation, and subsequent activity of myofibroblasts are key to wound contraction, scar formation and remodeling of the bronchial tree structure, vital for maintaining the functioning capacity of the lungs. Though beneficial for acute injury repair, excessive or dysregulated activity of bronchus fibroblasts can lead to pathological organ remodeling, contributing to fibrosing lung diseases. In these conditions, myofibroblasts persist in injured lung tissue, continuously producing ECM components that can eventually lead to scar formation, decreasing lung compliance, and impairing gas exchange. (This extended description was generated by ChatGPT and reviewed by the CellGuide team, who added references, and by the CL editors, who approved it for inclusion in CL. It may contain information that applies only to some subtypes and species, and so should not be considered definitional.) CL:2000093 https://cellxgene.cziscience.com/cellguide/CL_2000093 Any fibroblast of lung that is part of a bronchus. bronchus