ABSTRACT
<p><b>OBJECTIVE</b>To investigate the expression and clinical significances of HGFA, Matriptase, HAI-1 and HAI-2 in patients with acute myeloid leukemia (AML).</p><p><b>METHODS</b>The bone marrow samples from 91 AML patients, 41 AML patients in complete remission, and 32 normal controls were collected. Real time fluorescence quantitative RT-PCR (qRT-PCR) was used to detect the mRNA expressions levels of HGFA, Matriptase, HAI-1, HAI-2 . The expressions of these genes were compared among AML untreated group, the complete remission group and the healthy control group. The correlation of their expression with clinical characteristics was analyzed.</p><p><b>RESULTS</b>The level of HGFA in the AML untreated group was higher than that in the healthy control group（P<0.05）, while the HAI-2 mRNA level was lower than that in the healthy control group（P<0.05）. The mRNA levels of HAI-1 and Matriptase were not changed significantly in all groups. The HAI-2 mRNA expression level was significantly lower in the high white blood cell group (P<0.05).</p><p><b>CONCLUSION</b>The abnormal activation of HGF/c-Met signaling system in AML may result from the increase of HGFA expression and the decrease of HAI-2 expression of the upstream regulatory factors.</p>