Epidemiological Survey of Hemoglobinopathies Based on Next-Generation Sequencing Platform in Hunan Province, China / 生物医学与环境科学（英文）

OBJECTIVE@#This study was aimed at investigating the carrier rate of, and molecular variation in, α- and β-globin gene mutations in Hunan Province.@*METHODS@#We recruited 25,946 individuals attending premarital screening from 42 districts and counties in all 14 cities of Hunan Province. Hematological screening was performed, and molecular parameters were assessed.@*RESULTS@#The overall carrier rate of thalassemia was 7.1%, including 4.83% for α-thalassemia, 2.15% for β-thalassemia, and 0.12% for both α- and β-thalassemia. The highest carrier rate of thalassemia was in Yongzhou (14.57%). The most abundant genotype of α-thalassemia and β-thalassemia was -α 3.7/αα (50.23%) and β IVS-II-654/β N (28.23%), respectively. Four α-globin mutations [CD108 (ACC>AAC), CAP +29 (G>C), Hb Agrinio and Hb Cervantes] and six β-globin mutations [CAP +8 (C>T), IVS-II-848 (C>T), -56 (G>C), beta nt-77 (G>C), codon 20/21 (-TGGA) and Hb Knossos] had not previously been identified in China. Furthermore, this study provides the first report of the carrier rates of abnormal hemoglobin variants and α-globin triplication in Hunan Province, which were 0.49% and 1.99%, respectively.@*CONCLUSION@#Our study demonstrates the high complexity and diversity of thalassemia gene mutations in the Hunan population. The results should facilitate genetic counselling and the prevention of severe thalassemia in this region.

Effects of c-met-siRNA on the growth and invasion of hepatocellular carcinoma MHCC97-H cells / 中华肝脏病杂志

<p><b>OBJECTIVE</b>To explore the effects of c-met-siRNA on the growth and invasion of hepatocellular carcinoma MHCC97-H cells by pSuppressorRetro/c-met-siRNA recombinant plasmid transfection.</p><p><b>METHODS</b>Recombinant plasmid transfection to Phoenix A cells was constructed using the lipofectin method and then the retrovirals containing c-met-siRNA were used to infect target cells MHCC97-H. In vitro, c-met expression was tested by Western blot. Cell proliferation, motility and invasiveness were studied using MTT, cell migration assay, and cell invasion assay, respectively.</p><p><b>RESULTS</b>The expression of c-met decreased significantly in MHCC97-H cells, and the most effective site of the target sequence was at 537. The growth, motility and invasiveness of MHCC97-H cells were inhibited.</p><p><b>CONCLUSION</b>The results indicate that c-met-siRNA can down-regulate the expression of c-met and inhibit hepatocellular carcinoma cell proliferation, motility and invasiveness.</p>