{"type": "root", "children": [{"type": "p", "children": [{"type": "t", "text": "\nRecent findings have revealed that components related to MIR4795, particularly through its association with MEGF8, play crucial roles in modulating developmental signaling pathways. In one study, genome‐wide screens identified negative regulators of Hedgehog signaling, including MEGF8, which together with other proteins affects the trafficking and localization of the SMO receptor. The loss of these regulators leads to enhanced cell-surface SMO retention and ciliary accumulation, thereby sharpening cellular sensitivity to Sonic Hedgehog cues and influencing neural cell-fate decisions."}, {"type": "fg", "children": [{"type": "fg_f", "ref": "1"}]}, {"type": "t", "text": ""}]}, {"type": "t", "text": "\n\n"}, {"type": "p", "children": [{"type": "t", "text": "\nOther research has underscored the importance of MEGF8 in bone morphogenetic protein (BMP) signaling during sensory neuron development. A forward genetic screen in mice identified MEGF8 as a critical modifier of BMP4 signaling in trigeminal ganglion neurons. The absence of MEGF8 disrupted BMP4-mediated inhibition of axon growth, leading to misdirected axonal projections and developmental defects reminiscent of those observed in BMP4 loss-of-function models. This demonstrates that MEGF8 is necessary for the proper guidance and migration of sensory neurons."}, {"type": "fg", "children": [{"type": "fg_f", "ref": "2"}]}, {"type": "t", "text": ""}]}, {"type": "t", "text": "\n\n"}, {"type": "p", "children": [{"type": "t", "text": "\nFurthermore, MEGF8 has been implicated in early embryonic processes that determine left–right asymmetry, a factor that indirectly influences cardiovascular development. Temporal deletion studies in mice revealed that disrupting MEGF8 function at very early embryonic stages can lead to laterality defects and aberrant aortic arch artery formation, suggesting that MEGF8’s regulatory activities are critical before cardiac organogenesis begins. This latent role in establishing laterality highlights an ancient and pivotal function for MEGF8 in ensuring proper tissue patterning and subsequent organ development."}, {"type": "fg", "children": [{"type": "fg_f", "ref": "3"}]}, {"type": "t", "text": ""}]}, {"type": "rg", "children": [{"type": "r", "ref": 1, "children": [{"type": "t", "text": "Ganesh V Pusapati, Jennifer H Kong, Bhaven B Patel, et al. "}, {"type": "b", "children": [{"type": "t", "text": "CRISPR Screens Uncover Genes that Regulate Target Cell Sensitivity to the Morphogen Sonic Hedgehog."}]}, {"type": "t", "text": " "}, {"type": "i", "children": [{"type": "t", "text": "Dev Cell (2018)"}]}, {"type": "t", "text": " DOI: "}, {"type": "a", "children": [{"type": "t", "text": "10.1016/j.devcel.2017.12.003"}], "href": "https://doi.org/10.1016/j.devcel.2017.12.003"}, {"type": "t", "text": " PMID: "}, {"type": "a", "children": [{"type": "t", "text": "29290584"}], "href": "https://pubmed.ncbi.nlm.nih.gov/29290584"}]}, {"type": "r", "ref": 2, "children": [{"type": "t", "text": "Caitlin Engelhard, Sarah Sarsfield, Janna Merte, et al. "}, {"type": "b", "children": [{"type": "t", "text": "MEGF8 is a modifier of BMP signaling in trigeminal sensory neurons."}]}, {"type": "t", "text": " "}, {"type": "i", "children": [{"type": "t", "text": "Elife (2013)"}]}, {"type": "t", "text": " DOI: "}, {"type": "a", "children": [{"type": "t", "text": "10.7554/eLife.01160"}], "href": "https://doi.org/10.7554/eLife.01160"}, {"type": "t", "text": " PMID: "}, {"type": "a", "children": [{"type": "t", "text": "24052814"}], "href": "https://pubmed.ncbi.nlm.nih.gov/24052814"}]}, {"type": "r", "ref": 3, "children": [{"type": "t", "text": "Wenfeng Wang, Xiaoling Zheng, Hejie Song, et al. "}, {"type": "b", "children": [{"type": "t", "text": "Spatial and temporal deletion reveals a latent effect of Megf8 on the left-right patterning and heart development."}]}, {"type": "t", "text": " "}, {"type": "i", "children": [{"type": "t", "text": "Differentiation (2020)"}]}, {"type": "t", "text": " DOI: "}, {"type": "a", "children": [{"type": "t", "text": "10.1016/j.diff.2020.03.002"}], "href": "https://doi.org/10.1016/j.diff.2020.03.002"}, {"type": "t", "text": " PMID: "}, {"type": "a", "children": [{"type": "t", "text": "32203821"}], "href": "https://pubmed.ncbi.nlm.nih.gov/32203821"}]}]}]}