sybr-green-i and Precursor-Cell-Lymphoblastic-Leukemia-Lymphoma

sybr-green-i has been researched along with Precursor-Cell-Lymphoblastic-Leukemia-Lymphoma* in 1 studies

Other Studies

1 other study(ies) available for sybr-green-i and Precursor-Cell-Lymphoblastic-Leukemia-Lymphoma

ArticleYear
Minimal residual disease quantification in childhood acute lymphoblastic leukemia by real-time polymerase chain reaction using the SYBR green dye.
    Experimental hematology, 2002, Volume: 30, Issue:10

    Clone specific immunoglobulin (Ig) and T-cell receptor (TCR) gene sequences can be used as molecular targets for detection of minimal residual disease (MRD) in acute lymphoblastic leukemia (ALL). Real-time quantitative PCR (RQ-PCR) with no need for post-PCR processing is an attractive approach for detection and quantification of specific DNA or RNA sequences. In the present study we evaluated a real-time PCR-based technology for MRD quantification in children with precursor-B ALL.. DNA samples from 36 children with newly diagnosed precursor-B ALL were available for molecular analysis. All patients were uniformly treated according to the Nordic Society of Pediatric Hematology and Oncology (NOPHO) protocols from 1992. A real-time PCR assay was applied for MRD quantification using LightCycler technology and the SYBR green fluorescent dye for detection of clone-specific Ig and TCR gene rearrangements as target sequences. The specificity of the PCR products was verified by melting curve analysis.. Thirty-four of the 36 children with precursor-B ALL (94%) displayed at least one clonal Ig heavy chain (IgH) or TCR gene sequence useful as a molecular target. These clone-specific targets were successfully applied for real-time PCR quantification in all but one patient. Melting curve analysis was important for identifying all specific PCR products. In 32 pediatric precursor-B-ALL patients an MRD level >/=10(-3) at day 29 during induction treatment was significantly correlated with later bone marrow relapse (p = 0.0025).. Real-time PCR using clone-specific primers and the SYBR green dye for detection is a feasible technique for identifying patients at risk for relapse. This approach provides an easily applicable tool for detection of IgH/TCR gene rearrangements in the routine setting. Melting curve analysis allowed clear distinction between specific rearrangements and unspecific background signals.

    Topics: Adolescent; Benzothiazoles; Child; Child, Preschool; Diamines; Disease-Free Survival; DNA, Neoplasm; Female; Fluorescent Dyes; Gene Rearrangement; Genes, Immunoglobulin; Humans; Immunoglobulin Heavy Chains; Male; Neoplasm, Residual; Organic Chemicals; Polymerase Chain Reaction; Precursor Cell Lymphoblastic Leukemia-Lymphoma; Quinolines; Receptors, Antigen, T-Cell; RNA, Neoplasm; Time Factors

2002