Abstract
MicroRNAs (miRs) are short RNA nucleotide sequences that regulate protein synthesis by cleaving messenger RNA (mRNA) or preventing their translation. MiRs are synthesized by a highly specialized process involving protein complexes such as DROSHA and Dicer, RNA polymerases and Argonaut proteins (RISC complex). Some miRs are associated with PDX1, Neurog3 and mafA proteins, transcription fac…