{"type": "root", "children": [{"type": "p", "children": [{"type": "t", "text": "\nMUCL3 appears to represent a candidate gene that encodes a small protein featuring a mucin‐like domain—its amino acid sequence shows homology to regions found in zonadhesin, a protein involved in cell adhesion during sperm–zona pellucida binding. Initial characterization of this gene in human lung, kidney, and testis revealed that, in addition to the sense strand transcript encoding a 235–amino acid protein, there is also a non–protein coding antisense transcript. This dual–strand expression pattern suggests that MUCL3 might not only contribute structurally to mucosal or epithelial barrier functions but could also be engaged in regulatory roles that influence local gene expression, potentially affecting cellular adhesion, immune responses, and tissue homeostasis in organs where its expression is highest."}, {"type": "fg", "children": [{"type": "fg_f", "ref": "1"}]}, {"type": "t", "text": ""}]}, {"type": "t", "text": "\n\n"}, {"type": "p", "children": [{"type": "t", "text": "\nAlthough the majority of the other provided abstracts focus on the vasoactive intestinal peptide (VIP) system – describing, for example, VIP’s roles in neuroprotection, inflammatory signaling attenuation, modulation of learning and memory, and regulation of neurogenesis – none of these studies address MUCL3 directly. In contrast, the candidate gene described here, by virtue of its mucin–like domain and its expression profile in respiratory and other epithelial tissues, emerges as a strong candidate for involvement in diffuse panbronchiolitis and possibly other mucosal inflammatory conditions. Its profile contrasts with but may be complementary to the extensive neuroimmune and trophic functions mediated by peptides such as VIP in other tissues."}, {"type": "fg", "children": [{"type": "fg_f", "ref": "1"}]}, {"type": "t", "text": ""}]}, {"type": "rg", "children": [{"type": "r", "ref": 1, "children": [{"type": "t", "text": "Yasunari Matsuzaka, Kenichi Tounai, Akihiro Denda, et al. "}, {"type": "b", "children": [{"type": "t", "text": "Identification of novel candidate genes in the diffuse panbronchiolitis critical region of the class I human MHC."}]}, {"type": "t", "text": " "}, {"type": "i", "children": [{"type": "t", "text": "Immunogenetics (2002)"}]}, {"type": "t", "text": " DOI: "}, {"type": "a", "children": [{"type": "t", "text": "10.1007/s00251-002-0470-8"}], "href": "https://doi.org/10.1007/s00251-002-0470-8"}, {"type": "t", "text": " PMID: "}, {"type": "a", "children": [{"type": "t", "text": "12185533"}], "href": "https://pubmed.ncbi.nlm.nih.gov/12185533"}]}]}]}