Gap junction alpha-1 protein mRNA (Connexin 43 mRNA) (GJA1 mRNA)

Gap junction alpha-1 protein (Connexin 43) mRNA is the messenger RNA transcript of the GJA1 gene, which encodes the most prevalent gap junction protein in human tissues (NCBI Gene: 2697). Connexin 43 (Cx43) is essential for forming intercellular channels that allow the passage of ions and small signaling molecules, thereby coordinating cellular functions in the heart, skin, and brain (UniProt: P17302). In the context of injury, Cx43 mRNA expression often increases, which can exacerbate inflammation and inhibit the migration of cells necessary for wound closure (PubMed: 22424574). Therapeutic targeting of Cx43 mRNA using antisense oligonucleotides (ASOs) or small interfering RNAs (siRNAs) aims to transiently downregulate protein expression to accelerate healing and reduce scarring (PubMed: 17517966). This approach has been extensively studied in clinical trials for chronic wounds, such as diabetic foot ulcers, and ocular surface injuries (ClinicalTrials.gov: NCT00654550). By modulating the levels of Cx43 at the pre-translational stage, these therapies provide a localized method to manage inflammatory responses and promote tissue regeneration.

Other names

Connexin 43 mRNACx43 mRNAGap junction protein alpha 1 mRNAGJA1 transcript

Antisense oligonucleotides bind to the target mRNA through Watson-Crick base pairing, leading to the inhibition of translation or the recruitment of RNase H to degrade the mRNA transcript, thereby reducing the levels of Connexin 43 protein (PubMed: 17517966).