Abstract
We analyzed the methylation status of the O6-methylguanine-DNA methyltransferase (MGMT) promoter and mRNA expression in HL cells and assessed the response of these cells to dacarbazine. Expression of MGMT correlated with the presence of non-methylated promoters and cell lines with non-methylated promoters showed increased resistance against dacarbazine. KM-H2 cells expressed fusion transcripts between MGMT and proline-rich coiled-coil 2B (PRRC2B) but no wild type MGMT transcripts. Dacarbazine sensitivity suggested that fusion transcripts are translated into a protein with reduced functionality. MGMT promoter methylation predicts dacarbazine sensitivity of HL cells and it might be interesting to analyze this factor in HL patients.
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