The aim of the current study is to investigate the possible involvement of BM-MSCs in the pathophysiology of COPD by evaluating the expression of genes involved in proliferation/migration process, namely, the CXCL12a/CXCR4 and CCR7/CCL19, CCL21 ligand/receptor dyad. The gene discussed is CXCR4; the disease is chronic obstructive pulmonary disease.