Methyl-CpG-binding protein 2 mRNA (MECP2 mRNA) (MECP2 mRNA)

Methyl-CpG-binding protein 2 (MECP2) mRNA is the transcript of the MECP2 gene, which encodes a protein essential for the normal development and function of neurons in the brain (UniProt: P51608). The MeCP2 protein acts as a master transcriptional regulator, binding to methylated DNA to modulate the expression of thousands of downstream genes involved in synaptic plasticity and neuronal maturation (PubMed: 10508505). Mutations in the MECP2 gene that lead to a loss of functional protein cause Rett syndrome, a severe neurodevelopmental disorder, while duplication of the gene leads to MECP2 duplication syndrome (NIH: GARD). Because the brain is extremely sensitive to MeCP2 dosage, the mRNA is a critical therapeutic target for both gene replacement and gene silencing strategies. Current drug development includes antisense oligonucleotides (ASOs) like IONIS-MECP2-Rx designed to reduce mRNA levels in duplication syndrome, and gene therapies like TSHA-102 that deliver functional MECP2 mRNA to treat Rett syndrome (PubMed: 33658621). A major challenge in targeting MECP2 mRNA is the narrow therapeutic window, as even slight overexpression can induce toxicity similar to duplication syndrome.

Other names

MeCP2 mRNAMECP2 transcriptMethyl-CpG binding protein 2 mRNA

Antisense oligonucleotide-mediated mRNA degradation via RNase H; Gene replacement therapy to provide functional mRNA transcripts