Detection of Aneuploidy from Single Cells by Array-Comparative Genetic Hybridization / 中山大学学报(医学科学版)
Journal of Sun Yat-sen University(Medical Sciences)
;
(6): 468-472,476, 2009.
Article
in Chinese
| WPRIM
| ID: wpr-540260
ABSTRACT
[Objective] To set up an optimized protocol for aneuploidy detection from single cells through Array- Comparative Genetic Hybridization (CGH).[Method] Two cell lines,trisomy 18 (Tri-18;GM02732,47,XY,+18) and chromosome 4 segment deletion [sDel-4;GM00343,46,XY,4(del) (qter > p14)],were used in the study.In combination of 10 k 2.0 SNP mapping array platform and multiple displacement amplification (MDA),the diagnostic accurate rates of MDA product from single cells of the two cell lines using gDNA and single-cell MDA product as reference were compared.[Result] An extremely lower call rate (3.2 ± 1.2)% in the negative control group was observed compared to the experiment groups.When the single-cell MDA product was used as reference,the standard deviations of Log2 (signal intensity ratio) were significantly decreased in both groups,compared with when the gDNA as reference (P = 0.004).Through CNAT analytic software,some specific chromosomes (16,17,19,and 22) presented obvious preferential amplification (PA) when the gDNA was used as reference,but this PA could be eliminated when single-cell MDA product was used as reference.[Conclusion] 10 k 2.0 SNP mapping array in combination with MDA could be a quick,highly efficient and accurate method to detect aneuploidy in single cells.
Full text:
Available
Index:
WPRIM (Western Pacific)
Type of study:
Diagnostic study
/
Practice guideline
Language:
Chinese
Journal:
Journal of Sun Yat-sen University(Medical Sciences)
Year:
2009
Type:
Article
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