Figure 5.
SSO treatment partially restores enzymatic activity of methionine synthase reductase (MTRR). Fibroblasts from a patient homozygous for the c.903+469T>C mutation were transfected with an SSO that target both ESEs (ESE-SSO) or a non-targeting sequence (Ctr). Fibroblasts were then labeled with [57Co]cyanocabalamine and MTRR activity was determined indirectly by measuring methylcobalamine (MeCbl) synthesis (expressed as% of total labeled cobalamin derivatives). Adenosylcobalamine (AdoCbl) synthesis was measured as a control. The vertical lines represent the range of duplicate determinations in a representative experiment.