Abstract
Acute lymphoblastic leukemia (ALL) is the main subtype of childhood leukemia. Risk stratification is pivotal for ALL prognosis and individualized therapy. The current factors for risk stratification include clinical and laboratory features, cytogenetic characteristics of the blast, early response to chemotherapy, and genetic factors. Analyses of gene expression are becoming increasingly important in ALL risk stratification. β-Arrestin1, a multifunctional scaffold protein mediating many intracellular signaling networks, has been shown to be involved in many tumors. However, little is known of β-arrestin1 in leukemia. In this study, we found that β-arrestin1 was significantly elevated in 155 newly diagnosed ALL patients, compared with 51 controls. Further analysis showed that β-arrestin1 expression was positively related with risk classification and white blood cell count in ALL. Moreover, expression of Notch1, an essential gene for developing hematological cells and T-ALL, was found to be negatively correlated with β-arrestin1 in ALL. In conclusion, β-arrestin1 may be a useful predictor of risk stratification and prognosis of ALL, and thus of potential use in the design of individualized therapy strategies.
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Acknowledgments
This work was supported by grants from the National Natural Science Foundation of China (90919013, 30871103), Natural Science Foundation of Chongqing (2008BB5072, 2010BA5008), and New Century Talented Program from Ministry of Chinese Education (NCET-2008). The authors would like to express their sincere thanks to the contribution of all patients and their families in this study.
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Liu, H., Long, J., Zhang, Ph. et al. Elevated β-arrestin1 expression correlated with risk stratification in acute lymphoblastic leukemia. Int J Hematol 93, 494–501 (2011). https://doi.org/10.1007/s12185-011-0824-9
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DOI: https://doi.org/10.1007/s12185-011-0824-9