Summary of the probe development efforts to identify inhibitors of the interaction of the lipase co-activator protein, abhydrolase domain containing 5 (ABHD5) with perilipin-1 (PLIN1)
Name: Summary of the probe development efforts to identify inhibitors of the interaction of the lipase co-activator protein, abhydrolase domain containing 5 (ABHD5) with perilipin-1 (PLIN1). ..more
Source (MLPCN Center Name): The Scripps Research Institute Molecular Screening Center (SRIMSC)
Affiliation: The Scripps Research Institute, TSRI
Assay Provider: James Granneman, Wayne State University
Network: Molecular Library Probe Production Centers Network (MLPCN)
Grant Proposal Number: 1 R21 NS061634-01
Grant Proposal PI: James Granneman, Wayne State University
External Assay ID: ABHD5-PLIN1_INH_SUMMARY
Name: Summary of the probe development efforts to identify inhibitors of the interaction of the lipase co-activator protein, abhydrolase domain containing 5 (ABHD5) with perilipin-1 (PLIN1).
Adipocytes are important regulators of vertebrate energy stores, in part through the storage of dietary fat (triglyceride) that is mobilized via lipolysis during fasting states for use by tissues such as heart and skeletal muscle (1, 2). However, in chronic conditions of overnutrition, such as obesity and lipid storage disorders, excess intracellular lipid accumulation and reduced lipolysis leads to cellular lipotoxicity, which contributes to diabetes, atherosclerosis, and cardiomyopathy (2, 3). The metabolism of cellular lipid is regulated in part by protein-protein interactions near the surface of intracellular lipid droplets. In adipocytes lipolysis is inhibited by the interaction of a protein called abhydrolase domain-containing 5 (ABHD5) with the lipid droplet scaffold protein perilipin A (PLIN). In cells that do not express Plin, such as myocytes, lipolysis is blocked by similar interactions of ABHD5 with myocyte lipid droplet protein (MLDP) (4). Studies showing reduced lipotoxicity following Plin overexpression (5, 6), combined with population studies identifying Abhd5 mutations as a cause of the lipid storage disease Chanarin-Dorfman syndrome (7), suggest that activating lipolysis by blocking interactions of ABHD5 with PLIN or MLDP will increase lipid clearance from adipocytes and other cells, thereby reducing lipotoxicity. As a result, compounds that inhibit these protein interactions may have therapeutic potential for lipid disorders such as obesity, diabetes, and cardiovascular disease (8).
Summary of Probe Development Effort:
This probe development effort is focused on the identification of inhibitors of the interaction of the lipase co-activator protein, abhydrolase domain containing 5 (ABHD5) with perilipin-1 (PLIN1). All AIDs that contain results associated with this project can be found in the "Related Bioassays" section of this Summary AID.
1. Scherer, PE, Adipose tissue: from lipid storage compartment to endocrine organ. Diabetes, 2006. 55(6): p. 1537-45.
2. Vazquez-Vela, ME, Torres, N and Tovar, AR, White adipose tissue as endocrine organ and its role in obesity. Arch Med Res, 2008. 39(8): p. 715-28.
3. Lewis, GF, Carpentier, A, Adeli, K and Giacca, A, Disordered fat storage and mobilization in the pathogenesis of insulin resistance and type 2 diabetes. Endocr Rev, 2002. 23(2): p. 201-29.
4. Granneman, JG, Moore, HP, Mottillo, EP and Zhu, Z, Functional interactions between Mldp (LSDP5) and Abhd5 in the control of intracellular lipid accumulation. J Biol Chem, 2009. 284(5): p. 3049-57.
5. Borg, J, Klint, C, Wierup, N, Strom, K, Larsson, S, Sundler, F, Lupi, R, Marchetti, P, Xu, G, Kimmel, A, Londos, C and Holm, C, Perilipin is present in islets of Langerhans and protects against lipotoxicity when overexpressed in the beta-cell line INS-1. Endocrinology, 2009. 150(7): p. 3049-57.
6. Brasaemle, DL, Rubin, B, Harten, IA, Gruia-Gray, J, Kimmel, AR and Londos, C, Perilipin A increases triacylglycerol storage by decreasing the rate of triacylglycerol hydrolysis. J Biol Chem, 2000. 275(49): p. 38486-93.
7. Lefevre, C, Jobard, F, Caux, F, Bouadjar, B, Karaduman, A, Heilig, R, Lakhdar, H, Wollenberg, A, Verret, JL, Weissenbach, J, Ozguc, M, Lathrop, M, Prud'homme, JF and Fischer, J, Mutations in CGI-58, the gene encoding a new protein of the esterase/lipase/thioesterase subfamily, in Chanarin-Dorfman syndrome. Am J Hum Genet, 2001. 69(5): p. 1002-12.
8. Wang, M and Fotsch, C, Small-molecule compounds that modulate lipolysis in adipose tissue: targeting strategies and molecular classes. Chem Biol, 2006. 13(10): p. 1019-27.
Summary, Summary AID, lipolysis, lipotoxicity, ABHD5, 1-acylglycerol-3-phosphate O-acyltransferase, abhydrolase domain-containing 5, CGI58, comparative gene identification 58, NCIE2 gene, perilipin A, perilipin-1, Plin, plin1, lipid droplet-associated protein, Mldp, muscle lipid droplet protein, protein-protein, interaction, adipocyte, myocyte, G. princeps, luciferase, luminescence, complementation, complementation assay, inhibitor, inhibition, validation, 2K, 2K validation, HTS, high throughput screen, 1536, Scripps, Scripps Florida, MLSMR, The Scripps Research Institute Molecular Screening Center, SRIMSC, Molecular Libraries Probe Production Centers Network, MLPCN.