Detection of the tumor load in chronic myeloid leukemia during treatment with interferon(IFN)by conventional cytogenetics,nested-RT-PCR and FISH
10.3760/cma.j.issn.1009-9921.2008.04.012
- VernacularTitle:联合应用细胞遗传学、巢式RT-PCR和FISH技术监测慢性髓细胞白血病干扰素治疗中肿瘤负荷
- Author:
Guoxia LI
;
Huiping WANG
;
Zhenhua QIAO
;
Hongwei WANG
;
Xin DAI
- Publication Type:Journal Article
- Keywords:
Leukemia,myeloid,chronic;
Cytogenetics;
Polymerase chain reaction;
In situ hybridization,fluorescence
- From:
Journal of Leukemia & Lymphoma
2008;17(4):276-278
- CountryChina
- Language:Chinese
-
Abstract:
Objective To explore the sensitivity and specificity of conventional eytogeneties(CC),nested-reverse transcriptase polymerase chain reaction(nested-RT-PCR) and dual-color and dual-fusion fluorescence in situ hybridization(D-FISH) technique in monitoring the tumor load of chronic myeloid leukemia (CML) during treatment.Methods CC,nested-RT-PCR and interphase D-FISH were simultaneously carried out to detect the tumor load of 5 CML patients during treatment with interferon-Mpha(IFN-α).Results 24 specimens from 5 CML patients before and after IFN-α therapy were investigated and the results showed that 23 specimens were Ph+ with different positive ratios by CC.All specimens were bcl-abl mRNA (+) by RTPCR.The Ph-ber-abl+ specimen from case 2 after 75 months of post-treatment showed 4.5%bcr-abl+ cells by FISH.2 specimens from case 1 at 22 mortths,26 mortths of post-treatment.2 specimens from cage 5 after 12 months,16 menths of post-treatment and 2 specimens from case 4 after 6 menths,10 menths post-treatment with same Ph+ ratio respectively were investigated by FISH and showed 47.5% and 39.5%,74.0%and 60.5%,99.0% and 99.5% bcr-abl+ cells,respectively.Conclusion CC can be used as a basic tool to monitor the change of tumor load in CML during treatment. When CC can't evaluate precisely dynamic changes of tumor load and when tumor load in patient with treatment were too low to detect Ph bv CC while bcr-abl mRNA was still positive by RT-PCR,FISH Call be used to detect precisely tumor load and monitor dynamic change of the disease.More sensitive RT-PCR was used to monitor tumor load when it was negative to bcr-abl by FISH during treatment.
