Recently, Lu’s study manifested that the levels of TLR4 mRNA expression in MSCs isolated from bone marrow of patients with acute myeloid leukemia (AML-MSC) as well as from the patients’ lung cancer tissues (LC-MSC), were much higher than that in MSCs obtained from the bone marrow of healthy volunteers (BM-MSC) [83]. Here, TLR4 is linked to lung cancer.