{"type": "root", "children": [{"type": "p", "children": [{"type": "t", "text": "\nAlthough none of the provided abstracts explicitly mention or investigate MIR8059, the collective findings focus on the central role of glycerol kinase (GK) in regulating lipid and carbohydrate metabolism across several tissues. In adipose tissue, for example, disruption of glycerol transport mechanisms (via AQP7 knockout) leads to increased glycerol kinase activity, accelerated triglyceride synthesis, and consequent obesity development."}, {"type": "fg", "children": [{"type": "fg_f", "ref": "1"}]}, {"type": "t", "text": " Similarly, comprehensive gene expression analyses in GK‐deficient models have revealed alterations in metabolic pathways related to insulin signaling and lipid biosynthesis"}, {"type": "fg", "children": [{"type": "fg_f", "ref": "2"}]}, {"type": "t", "text": ";."}, {"type": "fg", "children": [{"type": "fg_f", "ref": "3"}]}, {"type": "t", "text": "\n"}]}, {"type": "t", "text": "\n\n"}, {"type": "p", "children": [{"type": "t", "text": "\nAdditional studies have uncovered non‐enzymatic or “moonlighting” functions of glycerol kinase that extend beyond its catalytic role. For instance, weighted gene co-expression network analysis demonstrated that loss of GK is linked to altered apoptotic signaling and modulated expression of key regulatory genes."}, {"type": "fg", "children": [{"type": "fg_f", "ref": "4"}]}, {"type": "t", "text": " Investigations into alternatively spliced isoforms further revealed that differences in subcellular localization may underlie specialized functions in modulating energy balance and tissue-specific lipid homeostasis"}, {"type": "fg", "children": [{"type": "fg_f", "ref": "5"}]}, {"type": "t", "text": ";."}, {"type": "fg", "children": [{"type": "fg_f", "ref": "6"}]}, {"type": "t", "text": " Moreover, attention has been drawn to the role of GK in skeletal muscle, where its deficiency impairs myoblast differentiation and disturbs insulin signaling, linking it to metabolic disorders such as type 2 diabetes mellitus."}, {"type": "fg", "children": [{"type": "fg_f", "ref": "7"}]}, {"type": "t", "text": "\n"}]}, {"type": "t", "text": "\n\n"}, {"type": "p", "children": [{"type": "t", "text": "\nNotably, studies in hepatic metabolism have described a nuclear “moonlighting” role for GK isoform b as a co-regulator of lipid metabolism-related transcription factors, thereby influencing overall lipid and glucose homeostasis, in both normal and diabetic settings."}, {"type": "fg", "children": [{"type": "fg_f", "ref": "8"}]}, {"type": "t", "text": " In a related physiological context, research in pregnant mice has highlighted that altered GK localization and expression correlate with significant changes in hepatic glucose and lipid metabolism."}, {"type": "fg", "children": [{"type": "fg_f", "ref": "9"}]}, {"type": "t", "text": " \n"}]}, {"type": "t", "text": "\n\n"}, {"type": "p", "children": [{"type": "t", "text": "\nIn summary, while the function of MIR8059 is not directly addressed in the supplied literature, the detailed characterization of glycerol kinase—from its pivotal role as a metabolic gateway in adipocytes and liver to its emerging non‐metabolic, regulatory functions—suggests that analogous regulatory molecules (such as microRNAs) could be important modulators of these intricate metabolic networks. Future studies are warranted to determine whether MIR8059 might influence similar metabolic or transcriptional pathways by regulating targets like glycerol kinase.\n"}]}, {"type": "rg", "children": [{"type": "r", "ref": 1, "children": [{"type": "t", "text": "Toshiyuki Hibuse, Norikazu Maeda, Tohru Funahashi, et al. "}, {"type": "b", "children": [{"type": "t", "text": "Aquaporin 7 deficiency is associated with development of obesity through activation of adipose glycerol kinase."}]}, {"type": "t", "text": " "}, {"type": "i", "children": [{"type": "t", "text": "Proc Natl Acad Sci U S A (2005)"}]}, {"type": "t", "text": " DOI: "}, {"type": "a", "children": [{"type": "t", "text": "10.1073/pnas.0503291102"}], "href": "https://doi.org/10.1073/pnas.0503291102"}, {"type": "t", "text": " PMID: "}, {"type": "a", "children": [{"type": "t", "text": "16009937"}], "href": "https://pubmed.ncbi.nlm.nih.gov/16009937"}]}, {"type": "r", "ref": 2, "children": [{"type": "t", "text": "Lola Rahib, Nicole K MacLennan, Steve Horvath, et al. "}, {"type": "b", "children": [{"type": "t", "text": "Glycerol kinase deficiency alters expression of genes involved in lipid metabolism, carbohydrate metabolism, and insulin signaling."}]}, {"type": "t", "text": " "}, {"type": "i", "children": [{"type": "t", "text": "Eur J Hum Genet (2007)"}]}, {"type": "t", "text": " DOI: "}, {"type": "a", "children": [{"type": "t", "text": "10.1038/sj.ejhg.5201801"}], "href": "https://doi.org/10.1038/sj.ejhg.5201801"}, {"type": "t", "text": " PMID: "}, {"type": "a", "children": [{"type": "t", "text": "17406644"}], "href": "https://pubmed.ncbi.nlm.nih.gov/17406644"}]}, {"type": "r", "ref": 3, "children": [{"type": "t", "text": "Nicole K MacLennan, Lola Rahib, Cynthia Shin, et al. "}, {"type": "b", "children": [{"type": "t", "text": "Targeted disruption of glycerol kinase gene in mice: expression analysis in liver shows alterations in network partners related to glycerol kinase activity."}]}, {"type": "t", "text": " "}, {"type": "i", "children": [{"type": "t", "text": "Hum Mol Genet (2006)"}]}, {"type": "t", "text": " DOI: "}, {"type": "a", "children": [{"type": "t", "text": "10.1093/hmg/ddi457"}], "href": "https://doi.org/10.1093/hmg/ddi457"}, {"type": "t", "text": " PMID: "}, {"type": "a", "children": [{"type": "t", "text": "16368706"}], "href": "https://pubmed.ncbi.nlm.nih.gov/16368706"}]}, {"type": "r", "ref": 4, "children": [{"type": "t", "text": "Nicole K MacLennan, Jun Dong, Jason E Aten, et al. "}, {"type": "b", "children": [{"type": "t", "text": "Weighted gene co-expression network analysis identifies biomarkers in glycerol kinase deficient mice."}]}, {"type": "t", "text": " "}, {"type": "i", "children": [{"type": "t", "text": "Mol Genet Metab (2009)"}]}, {"type": "t", "text": " DOI: "}, {"type": "a", "children": [{"type": "t", "text": "10.1016/j.ymgme.2009.05.004"}], "href": "https://doi.org/10.1016/j.ymgme.2009.05.004"}, {"type": "t", "text": " PMID: "}, {"type": "a", "children": [{"type": "t", "text": "19546021"}], "href": "https://pubmed.ncbi.nlm.nih.gov/19546021"}]}, {"type": "r", "ref": 5, "children": [{"type": "t", "text": "Riki H Ohira, Katrina M Dipple, Yao-Hua Zhang, et al. "}, {"type": "b", "children": [{"type": "t", "text": "Human and murine glycerol kinase: influence of exon 18 alternative splicing on function."}]}, {"type": "t", "text": " "}, {"type": "i", "children": [{"type": "t", "text": "Biochem Biophys Res Commun (2005)"}]}, {"type": "t", "text": " DOI: "}, {"type": "a", "children": [{"type": "t", "text": "10.1016/j.bbrc.2005.03.143"}], "href": "https://doi.org/10.1016/j.bbrc.2005.03.143"}, {"type": "t", "text": " PMID: "}, {"type": "a", "children": [{"type": "t", "text": "15845384"}], "href": "https://pubmed.ncbi.nlm.nih.gov/15845384"}]}, {"type": "r", "ref": 6, "children": [{"type": "t", "text": "Mari Iwase, Soshi Tokiwa, Shigeto Seno, et al. "}, {"type": "b", "children": [{"type": "t", "text": "Glycerol kinase stimulates uncoupling protein 1 expression by regulating fatty acid metabolism in beige adipocytes."}]}, {"type": "t", "text": " "}, {"type": "i", "children": [{"type": "t", "text": "J Biol Chem (2020)"}]}, {"type": "t", "text": " DOI: "}, {"type": "a", "children": [{"type": "t", "text": "10.1074/jbc.RA119.011658"}], "href": "https://doi.org/10.1074/jbc.RA119.011658"}, {"type": "t", "text": " PMID: "}, {"type": "a", "children": [{"type": "t", "text": "32273338"}], "href": "https://pubmed.ncbi.nlm.nih.gov/32273338"}]}, {"type": "r", "ref": 7, "children": [{"type": "t", "text": "Lola Rahib, Ganesh Sriram, Melissa K Harada, et al. "}, {"type": "b", "children": [{"type": "t", "text": "Transcriptomic and network component analysis of glycerol kinase in skeletal muscle using a mouse model of glycerol kinase deficiency."}]}, {"type": "t", "text": " "}, {"type": "i", "children": [{"type": "t", "text": "Mol Genet Metab (2009)"}]}, {"type": "t", "text": " DOI: "}, {"type": "a", "children": [{"type": "t", "text": "10.1016/j.ymgme.2008.11.163"}], "href": "https://doi.org/10.1016/j.ymgme.2008.11.163"}, {"type": "t", "text": " PMID: "}, {"type": "a", "children": [{"type": "t", "text": "19121967"}], "href": "https://pubmed.ncbi.nlm.nih.gov/19121967"}]}, {"type": "r", "ref": 8, "children": [{"type": "t", "text": "Lili Miao, Fei Su, Yongsheng Yang, et al. "}, {"type": "b", "children": [{"type": "t", "text": "Glycerol kinase enhances hepatic lipid metabolism by repressing nuclear receptor subfamily 4 group A1 in the nucleus."}]}, {"type": "t", "text": " "}, {"type": "i", "children": [{"type": "t", "text": "Biochem Cell Biol (2020)"}]}, {"type": "t", "text": " DOI: "}, {"type": "a", "children": [{"type": "t", "text": "10.1139/bcb-2019-0317"}], "href": "https://doi.org/10.1139/bcb-2019-0317"}, {"type": "t", "text": " PMID: "}, {"type": "a", "children": [{"type": "t", "text": "31813231"}], "href": "https://pubmed.ncbi.nlm.nih.gov/31813231"}]}, {"type": "r", "ref": 9, "children": [{"type": "t", "text": "Begoña Zapatería, Julio Sevillano, María Gracia Sánchez-Alonso, et al. "}, {"type": "b", "children": [{"type": "t", "text": "Deletion of pleiotrophin impairs glucose tolerance and liver metabolism in pregnant mice: Moonlighting role of glycerol kinase."}]}, {"type": "t", "text": " "}, {"type": "i", "children": [{"type": "t", "text": "FASEB J (2021)"}]}, {"type": "t", "text": " DOI: "}, {"type": "a", "children": [{"type": "t", "text": "10.1096/fj.202101181R"}], "href": "https://doi.org/10.1096/fj.202101181R"}, {"type": "t", "text": " PMID: "}, {"type": "a", "children": [{"type": "t", "text": "34551152"}], "href": "https://pubmed.ncbi.nlm.nih.gov/34551152"}]}]}]}