(12) United States Patent (10) Patent No.: US 8,748,464 B2 Verdin Et Al
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USOO8748464B2 (12) United States Patent (10) Patent No.: US 8,748,464 B2 Verdin et al. (45) Date of Patent: Jun. 10, 2014 (54) USE OF SIRT1 ACTIVATORS OR INHIBITORS Ott et al., “Immune hyperactivation of HIV-1-infected T cells medi TO MODULATE AN IMMUNE RESPONSE ated by Tat and the CD28 pathway.” (1997) Science 275: 1481-1485. Nayagam et al., “SIRT1 modulating compounds from high-through (75) Inventors: Eric M. Verdin, San Francisco, CA put Screening as anti-inflammatory and insulin-sensitizing agents.” (US); Melanie Ott, San Francisco, CA (2006) J. Biomol. Screening 11:959-967. (US); Hye-Sook Kwon, San Mateo, CA Ott, M. “Role of SIRT1 in T cell Hyperacitivation during HIV infec (US); Hyungwook Lim, San Francisco, tion California HIV/AIDS Research Program.” 2008 http://chrp. ucop.edu/funded research/abstracts/2007 ott.html (2007), para CA (US) 1-3. Feige et al., “Specific SIRT1 Activation Mimics Low Energy Levels (73) Assignee: The J. David Gladstone Institutes, San and Protects against Diet-Induced Metabolic Disorders by Enhanc Francisco, CA (US) ing Fat Oxidation.” (2008) Cell Metabolism 8:347-358. Sakamoto, K. “Silencing Metabolic Disorders by Novel SIRT1 Acti (*) Notice: Subject to any disclaimer, the term of this vators.” (2008) Cell Metabolism 7:3-4. patent is extended or adjusted under 35 Pacholec et al., “SRT1720, SRT2183, SRT1460, and Resveratrol are U.S.C. 154(b) by 519 days. not Direct Activators of SIRT1. Published on Jan. 8, 2010 as Manu script M109.088682 The latest version is at http://www.jbc.org/cgi/ (21) Appl. No.: 12/838,247 doi/10.1074/bc.M109.088.682–25 pages. Sundrud et al., “Synergistic and combinatorial control of T cell (22) Filed: Jul. 16, 2010 activation and differentiation by transcription factors.” ScienceDirect www.sciencedirect.com, Current Opinion in Immunology (2010) (65) Prior Publication Data 22:1-7. Tao et al., “Deacetylase inhibition promotes the generation and func US 2010/0330114A1 Dec. 30, 2010 tion of regulatory T cells.” (2007) Nat. Med. 13 (11): 1299-1307. Saouaf et al., “Deacetylase inhibition increases regulatory T cell Related U.S. Application Data function and decreases incidence and severity of collagen-induced arthritis.” (2009) Exp. Mol. Pathol. 87:99-104. (63) Continuation-in-part of application No. Van Loosdregt et al., “Regulation of Treg functionality by acetyla PCT/US2009/000761, filed on Feb. 5, 2009. tion-mediated Foxp3 protein stabilization” (2010) Blood (60) Provisional application No. 61/026,997, filed on Feb. 115(5):965-974. 7, 2008. Wang et al., “Using histone deacetylase inhibitors to enhance Foxp3+ regulatory T-cell function and induce allograft tolerance.” (2009) Immunol. Cell Biol. 87: 195-202. (51) Int. Cl. Pagans, et al. “SIRT1 Regulates HIV Transcription via TAT AOIN 43/78 (2006.01) Deacetylation”. PLoS Biology, Feb. 2005, vol. 3, Issue 2, pp. 0210 A 6LX3/535 (2006.01) O220. (52) U.S. Cl. USPC ...................... 514/366; 514/229.5: 514/233.2 * cited by examiner (58) Field of Classification Search USPC .......................................................... 514/366 Primary Examiner — Sreeni Padmanabhan See application file for complete search history. Assistant Examiner — Timothy E. Betton (74) Attorney, Agent, or Firm — Paula A. Borden; (56) References Cited Bozicevic, Field & Francis LLP. U.S. PATENT DOCUMENTS (57) ABSTRACT 7,345,178 B2* 3/2008 Nunes et al. .................. 548.154 The present disclosure provides a method of increasing an 2005/02093OO A1 9/2005 Napper et al. 2007/0043050 A1 2/2007 Nunes et al. immune response in an individual, the method involving 2007/0105109 A1 5/2007 Geesaman et al. administering to an individual in need thereof an inhibitor of 2007/O1900.73 A1 8, 2007 Tucket al. SIRT1. The present disclosure provides a method of reducing 2008.O255382 A1 10/2008 Andrus et al. an immune response, e.g., to treat chronic immune hyperac 2009/0012080 A1 1/2009 Bemis et al. tivity, the method generally involving administering to an 2010 OO61984 A1 3/2010 Greene et al. individual in need thereofan activator of SIRT1. The present OTHER PUBLICATIONS disclosure provides a method of modulating activation and differentiation of CD4 T cells. Milne et al "Small rinoiecuie activators of SIRT1 as therapeutics for the treatment of type 2 diabetes.” (2007) Nature 450:712-716. 7 Claims, 13 Drawing Sheets U.S. Patent Jun. 10, 2014 Sheet 3 of 13 US 8,748.464 B2 **** G. 3A -3- 388: 8:8: (S. 33. 38. 8:8 :::::: 8:388: 8:8: tá G. 3C }& U.S. Patent Jun. 10, 2014 Sheet 4 of 13 US 8,748.464 B2 $¢£. 383. ??ž#$ ********* **x X: 8 E: i:S U.S. Patent Jun. 10, 2014 Sheet 7 of 13 US 8,748.464 B2 :::: immune &:x::::::: rG. A *::::::::: -: x88&iw888 risescripters G. B. U.S. Patent Jun. 10, 2014 Sheet 8 of 13 US 8,748.464 B2 8:8 {{}{} {}i &8888.888.888 3. 8:::::: w :- :- :- & Eric-tat-Gre Six 383 38 - --- 3.x: 8 U.S. Patent Jun. 10, 2014 Sheet 10 of 13 US 8,748.464 B2 38:33:3, 3. -- s : sa. & -8- -- U.S. Patent Jun. 10, 2014 Sheet 12 of 13 US 8,748.464 B2 {?}¿zººxaÅ???ž3§3)********&&&&%-'%.«----- ****************************************************************? G. 2A are :::::::: U.S. Patent Jun. 10, 2014 Sheet 13 of 13 US 8,748.464 B2 ***************§…*,** US 8,748,464 B2 1. 2 USE OF SIRT1 ACTIVATORS OR INHIBITORS individual in need thereofan activator of SIRT1. The present TO MODULATE AN IMMUNE RESPONSE disclosure provides a method of modulating activation and differentiation of CD4 T cells. CROSS-REFERENCE BRIEF DESCRIPTION OF THE DRAWINGS This application is a continuation-in-part of International Patent Application No. PCT/US2009/000761, which claims FIGS. 1A-F depict data showing the effect of Tat and the benefit of U.S. Provisional Patent Application No. 61/026, nicotinamide on T cell hyperactivation. 997, filed Feb. 7, 2008, which applications are incorporated FIGS. 2A-D depict the Tat-mediated superinduction of herein by reference in their entirety. 10 NF-kB-responsive genes. FIGS. 3A-C depicts the effect of Tat on the inhibitory effect STATEMENT REGARDING FEDERALLY of SIRT1 on NK-K-B-responsive promoters. SPONSORED RESEARCH FIGS. 4A-E depict binding of Tat to the acetyl lysine binding site in SIRT1. This invention was made with government Support under 15 FIGS.5A-D depict the effect of Tat on SIRT1 deacetylase grant no. R01 A1067.118-01A awarded by the National Insti activity. tutes of Health. The government has certain rights in the FIGS. 6A-C depict the effect of hyperacetylation of p85 by invention. Tat on T-cell hyperactivation. BACKGROUND FIGS. 7A and 7B depict a model for Tat effects on SIRT1 deacetylase activity, T-cell activation, and HIV transcription. Immune activation is a hallmark of human immunodefi FIGS. 8A and 8B depict the effect of SIRT1 activators on ciency virus-1 (HIV-1) infection and a significant factor that Tat-mediated T cell hyperactivation. promotes continuous viral replication and CD4+ T-cell deple FIGS. 9A and 9B depict the effect of SIRT1 on induced tion. In HIV-infected individuals, levels of circulating activa 25 Treg (iTreg) differentiation. tion markers correlate with accelerated disease progression FIGS. 10A-D depict interaction of SIRT1 with FoxP3, and and shortened survival. HIV infection is critically dependent the effect of inhibition of SIRT1 deacetylase activity on on the activated state of CD4+ T cells since the virus cannot acetylation of FoxP3. replicate efficiently in resting T cells. Quiescent T cells in FIGS. 11A-D depict destabilization of FoxP3 protein via blood are refractory to infection because of blocks at the level 30 deacetylation by SIRT1. of reverse transcription and proviral integration. In addition, FIGS. 12A and 12B depict the effect of inhibition of SIRT1 T-cell activation enhances viral transcription through the acti activity on differentiation of iTreg cells and FoxP3 expression Vation of various transcription factors, notably nuclear factor in nTreg cells. KB (NF-kB). FIG. 13 depicts an alignment of amino acid sequences of SIRT1 is a mammalian homologue of the yeast transcrip 35 tional repressor silent information regulator 2 (Sir2), an human FoxP3 (GenBank Accession Nos. NP 054728 and important factor governing longevity in yeast. Like Sir2. NM 014009), mouse FoxP3 (GenBank Accession Nos. SIRT1 requires nicotinamide adenine dinucleotide (NAD') NM 054039 and NP 473380), and cow FoxP3 (GenBank as a cofactor, which links its activity to the metabolic state of Accession Nos. NM 001045933 and NP 001039398). the cell. In addition to its enzymatic activity on histone Sub 40 strates in vitro, recent experimental evidence suggests that DEFINITIONS SIRT1 predominantly targets nonhistone proteins for 99 &g deacetylation. It has been reported that Tat is a substrate for As used herein, the terms “treatment,” “treating, and the the deacetylase activity of SIRT1. Acetylation of lysine 50 like, refer to obtaining a desired pharmacologic and/or physi (K50) in Tat is mediated by the histone acetyltransferase 45 ologic effect. The effect may be prophylactic in terms of activities of p300 and human GCN5 and generates binding completely or partially preventing a disease or symptom sites for the bromodomains of PCAF and Brg1. SIRT1 binds thereof and/or may be therapeutic in terms of a partial or and deacetylates Tat at K50, a process necessary to recycle complete cure for a disease and/or adverse affect attributable nonacetylated Tat protein for binding to TAR RNA and the to the disease. “Treatment’, as used herein, covers any treat cellular positive transcription elongation factor b (P-TEFb). 50 ment of a disease in a mammal, e.g., in a human, and includes: Literature (a) preventing the disease from occurring in a Subject which Milne et al., (2007) Nature 450:712-716; U.S.