{"type": "root", "children": [{"type": "p", "children": [{"type": "t", "text": "\nThe interstitial cells of Cajal (ICC) act as the pacemakers in the gastrointestinal tract and are critically dependent on Kit receptor tyrosine kinase signaling for both their development and sustained function. In the study described (PubMed:"}, {"type": "fg", "children": [{"type": "fg_f", "ref": "1"}]}, {"type": "t", "text": ", differential gene expression in the small intestine of wild‐type versus W/W(V) mutant mice was explored, offering a backdrop for identifying molecules that underlie ICC maintenance. Although the primary focus was on Kit signaling and its impact on ICC populations, the broader gene expression profiling suggests that noncoding RNAs, including SNORD113-6, might be involved in post-transcriptional regulatory processes relevant to ICC physiology."}, {"type": "fg", "children": [{"type": "fg_f", "ref": "1"}]}, {"type": "t", "text": "SNORD113-6 is a member of the C/D box family of small nucleolar RNAs that typically function as guide molecules for site-specific methylation of target RNAs. By directing these modification events, SNORD113-6 may influence RNA stability, processing, and translation. Such methylation-modulated RNA turnover and processing events can have downstream effects on the expression of genes critical for the proper signaling and function of ICC, thereby contributing indirectly to gastrointestinal motility."}, {"type": "fg", "children": [{"type": "fg_f", "ref": "1"}]}, {"type": "t", "text": "The integration of canonical signaling pathways—exemplified by the importance of Kit in ICC function—with the modulatory roles of noncoding RNAs like SNORD113-6 points to a multi-layered regulatory network in gastrointestinal tissues. By potentially fine-tuning the expression and processing of key transcripts, SNORD113-6 might help maintain the specialized phenotype of ICC, ensuring both the robustness of pacemaker activity and effective motor neurotransmission in the smooth muscle layers."}, {"type": "fg", "children": [{"type": "fg_f", "ref": "1"}]}, {"type": "t", "text": ""}]}, {"type": "rg", "children": [{"type": "r", "ref": 1, "children": [{"type": "t", "text": "I Takayama, Y Daigo, S M Ward, et al. "}, {"type": "b", "children": [{"type": "t", "text": "Novel human and mouse genes encoding an acid phosphatase family member and its downregulation in W/W(V) mouse jejunum."}]}, {"type": "t", "text": " "}, {"type": "i", "children": [{"type": "t", "text": "Gut (2002)"}]}, {"type": "t", "text": " DOI: "}, {"type": "a", "children": [{"type": "t", "text": "10.1136/gut.50.6.790"}], "href": "https://doi.org/10.1136/gut.50.6.790"}, {"type": "t", "text": " PMID: "}, {"type": "a", "children": [{"type": "t", "text": "12010880"}], "href": "https://pubmed.ncbi.nlm.nih.gov/12010880"}]}]}]}