Antoniou and colleagues reported an increased expression of the axis stromal-cell-derived factor-1 (SDF-1)/CXCR4 in BM-MSCs from IPF patients, suggesting the BM-MSCs may probably implicate in the pathogenesis of IPF by recruiting MSCs to lung injury sites[75]. The gene discussed is CXCL12; the disease is idiopathic pulmonary fibrosis.