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authors are in agreement Selleckchem ACY-1215 with the content of the manuscript. Each author’s contribution to the paper:TY: First author, background literature search, data analysis, development of final manuscript XYW: Corresponding author, research Mannose-binding protein-associated serine protease instruction, data analysis, development of final manuscript. RGG: background

literature search, data analysis. AL: research instruction, development of final manuscript. SY: research instruction, background literature search. YTC: data analysis, background literature search. YMW: research instruction, development of final manuscript. CMW: research instruction, data analysis. XZY: background literature search, data analysis.”
“Introduction Multi-drug resistance (MDR) of tumor cells, including leukemia cells, is a defense VE-822 supplier mechanism for retaining homeostasis when they are damaged by cytotoxic drugs [1]. Tumor cells emerge a series of biological changes during the development of MDR in them. In molecular mechanism, occurrence of tumor cells’ MDR is because of expression of genes related drug resistance [2]. To investigate which genes were in regulation in MDR of tumor cells, we established the multi-drug resistance cells HL-60/MDR using acute myelocytic leukemia cell line HL-60 at previous study. Then we screened and cloned the MDR related genes in HL-60/MDR cells using differential hybridization and gene chip [3, 4] and found a novel gene HA117 (GeneBank: AY230154) which may be related to MDR[5]. In this study, adenovirus vectors were constructed with the HA117 gene (Adeasy-HA117) to investigate whether HA117 gene could increase the drug resistance in chronic myelogenous myeloid leukemia cell line K562.