He Q, Li X, Zhang Z, Zhang Q, Xu F, Yang L, Tao Y, Liu Y. Overexpression of IGF-IR in malignant clonal cells in bone marrow of myelodysplastic syndromes.
Cancer Invest 2010;
28:983-8. [PMID:
20569071 DOI:
10.3109/07357907.2010.489537]
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Abstract
OBJECTIVE
To explore the expression level of insulin-like growth factor-1 receptor (IGF-IR) in malignant clone cells of myelodysplastic syndromes (MDS).
METHOD
Fluorescence in situ hybridization (FISH) and immunochemistry (alkaline phosphatase antialkaline phosphatase) were used together to detect the expression of IGF-IR in the bone marrow cells of 26 MDS patients with known abnormal karyotypes.
RESULT
The average IGF-IR expression level on the surface of clone cells from the 26 MDS cases was markedly elevated compared with the corresponding level in normal cells (78.2 ± 13.7% vs. 14.1 ± 14.0%, p < .0001). The percentages of malignant clone cells in all 26 MDS cases were significantly correlated with the respective percentages of IGF-IR-positive nucleated cells (r = 0.909; p < .0001). No significant difference in the IGF-IR expression level on the clone cells were observed either between high- and low-risk MDS patients or among MDS patients with different abnormal karyotypes.
CONCLUSION
IGF-IR might be taken as a marker of clone cells in MDS.
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