Lipin-1 has phosphatidate phosphatase activity.[5][6][7] The nuclear localization of Lipin 1 is regulated by the mammalian Target Of Rapamycin protein kinase and links mTORC1 activity to the regulation of Sterol regulatory element-binding proteins (SREBP)-dependent gene transcription.[8][9][10]
Clinical significance
This gene represents a candidate gene for human lipodystrophy, characterized by loss of body fat, fatty liver, hypertriglyceridemia, and insulin resistance. Mouse studies suggest that this gene functions during normal adipose tissue development and may also play a role in human triglyceride metabolism.[4][8]
References
↑Péterfy M, Phan J, Xu P, Reue K (January 2001). "Lipodystrophy in the fld mouse results from mutation of a new gene encoding a nuclear protein, lipin". Nature Genetics. 27 (1): 121–4. doi:10.1038/83685. PMID11138012.
↑Nagase T, Seki N, Ishikawa K, Tanaka A, Nomura N (February 1996). "Prediction of the coding sequences of unidentified human genes. V. The coding sequences of 40 new genes (KIAA0161-KIAA0200) deduced by analysis of cDNA clones from human cell line KG-1". DNA Research. 3 (1): 17–24. doi:10.1093/dnares/3.1.17. PMID8724849.
↑Finck BN, Gropler MC, Chen Z, Leone TC, Croce MA, Harris TE, Lawrence JC, Kelly DP (September 2006). "Lipin 1 is an inducible amplifier of the hepatic PGC-1alpha/PPARalpha regulatory pathway". Cell Metabolism. 4 (3): 199–210. doi:10.1016/j.cmet.2006.08.005. PMID16950137.
↑Donkor J, Sariahmetoglu M, Dewald J, Brindley DN, Reue K (February 2007). "Three mammalian lipins act as phosphatidate phosphatases with distinct tissue expression patterns". The Journal of Biological Chemistry. 282 (6): 3450–7. doi:10.1074/jbc.M610745200. PMID17158099.
↑Harris TE, Huffman TA, Chi A, Shabanowitz J, Hunt DF, Kumar A, Lawrence JC (January 2007). "Insulin controls subcellular localization and multisite phosphorylation of the phosphatidic acid phosphatase, lipin 1". The Journal of Biological Chemistry. 282 (1): 277–86. doi:10.1074/jbc.M609537200. PMID17105729.
Péterfy M, Phan J, Oswell GM, Xu P, Reue K (December 1999). "Genetic, physical, and transcript map of the fld region on mouse chromosome 12". Genomics. 62 (3): 436–44. doi:10.1006/geno.1999.6023. PMID10644441.
Reue K, Xu P, Wang XP, Slavin BG (July 2000). "Adipose tissue deficiency, glucose intolerance, and increased atherosclerosis result from mutation in the mouse fatty liver dystrophy (fld) gene". Journal of Lipid Research. 41 (7): 1067–76. PMID10884287.
Cao H, Hegele RA (2003). "Identification of single-nucleotide polymorphisms in the human LPIN1 gene". Journal of Human Genetics. 47 (7): 370–2. doi:10.1007/s100380200052. PMID12111372.
Suviolahti E, Reue K, Cantor RM, Phan J, Gentile M, Naukkarinen J, Soro-Paavonen A, Oksanen L, Kaprio J, Rissanen A, Salomaa V, Kontula K, Taskinen MR, Pajukanta P, Peltonen L (February 2006). "Cross-species analyses implicate Lipin 1 involvement in human glucose metabolism". Human Molecular Genetics. 15 (3): 377–86. doi:10.1093/hmg/ddi448. PMID16357106.
Yao-Borengasser A, Rasouli N, Varma V, Miles LM, Phanavanh B, Starks TN, Phan J, Spencer HJ, McGehee RE, Reue K, Kern PA (October 2006). "Lipin expression is attenuated in adipose tissue of insulin-resistant human subjects and increases with peroxisome proliferator-activated receptor gamma activation". Diabetes. 55 (10): 2811–8. doi:10.2337/db05-1688. PMID17003347.
van Harmelen V, Rydén M, Sjölin E, Hoffstedt J (January 2007). "A role of lipin in human obesity and insulin resistance: relation to adipocyte glucose transport and GLUT4 expression". Journal of Lipid Research. 48 (1): 201–6. doi:10.1194/jlr.M600272-JLR200. PMID17035674.
Harris TE, Huffman TA, Chi A, Shabanowitz J, Hunt DF, Kumar A, Lawrence JC (January 2007). "Insulin controls subcellular localization and multisite phosphorylation of the phosphatidic acid phosphatase, lipin 1". The Journal of Biological Chemistry. 282 (1): 277–86. doi:10.1074/jbc.M609537200. PMID17105729.
Croce MA, Eagon JC, LaRiviere LL, Korenblat KM, Klein S, Finck BN (September 2007). "Hepatic lipin 1beta expression is diminished in insulin-resistant obese subjects and is reactivated by marked weight loss". Diabetes. 56 (9): 2395–9. doi:10.2337/db07-0480. PMID17563064.