This review paper covers the diversified role of non-coding RNAs (ncRNAs) in the formation of neural tube defects (NTDs). NTDs are a group of serious birth defects that arise when the neural tube does not close normally during the early embryonic development. Although both genetic and environmental factors are known to cause neural tube defects (NTDs), the role of non-coding RNAs (ncRNAs) in the molecular mechanisms is becoming more evident. In this article, the different kinds of ncRNAs, such as microRNAs (miRNAs), long non-coding RNAs (lncRNAs), and circular RNAs (circRNAs), and their particular roles during neural tube closure will be discussed, focusing on their prospects as therapeutic targets for NTD prevention or treatment. Studies have revealed the role of specific microRNAs, such as members in the miR-17–92 and miR-100 clusters, in the regulation of essential processes, including the proliferation, differentiation, and death of neural precursor cells. The disruption of critical signaling, such as folate metabolism and planar cell polarity, affects these processes. Moreover, there has now become evidence on the role of lncRNAs and circRNAs in the interaction with chromatin-modification complexes, influencing the epigenetic profiles required during neural tube closure, and the regulation of gene expression through the ceRNA action. The developing embryo, whose ncRNA network has the disrupted ncRNA network, has an increased risk of developing the defects in the neural tubes. conclusion, NTD ncRNs represent an important area in the understanding and diagnosis of neural tube defects. The use of ncRNs, particularly some types of microRNs, long ncRNs, and circRNs, has proven that they are far from the “noise” transcribed in the genome. In fact, they play vital roles in the regulation of genes related to the closing of the neural tube. When ncRNs, including some microRNs, long ncRNs, and circRNs, malfunction, they disrupt vital signaling, resulting in an increased risk of the development of NTDs in the embryo. ncRNs link genetic risk and environment, contributing to the increased incidence that was unaccounted for. Future studies, therefore, shall focus on the use of ncRNs in the biomarkers needed in detecting the risk factors and risk of NTDs, the use of long ncRNs and circRNs, and the development of strategies in the prevention of congenital defects.
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