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autologous blood and marrow transplantation - Blog Science ...

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Kiel et al.<br />

Figure 1. Quantitative ASO-PCR analysis of the tumor load of LP 1 from one patient. DNA<br />

from 330,000 cells was serially diluted in 10-fold steps with placental DNA (undiluted, 1:1<br />

1:100,1:1000). At each dilution level, five PCR reactions were performed simultaneous<br />

The length of the specific PCR product is 80 bp.<br />

RESULTS<br />

Quantitative assessment of tumor <strong>and</strong> stem cells in LP 1<br />

In three of 30 LP examined, no tumor cells could be detected. The percentages<br />

of tumor cells varied between 0 <strong>and</strong> 0.71% (mean 0.04%), resulting in a tumor cell<br />

number in LP 1 ranging from 0 to 2.73 X10 8<br />

. Results of a PCR assay with a DNA<br />

dilution series from LP 1 of one patient are shown in Fig. 1. The proportion of<br />

CD34 +<br />

239<br />

stem cells in LP 1 ranged from 0.1 to 9.72% (mean 2.05%) resulting in a<br />

stem cell yield from 9.2X 10 6<br />

to 3.6X 10 9<br />

cells. Tumor <strong>and</strong> stem cell numbers of the<br />

30 LP 1 are summarized in Table 2.

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