Human Neurogenesis Assay: Modafinil + Buspirone
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US 20080171 750A1 (19) United States (12) Patent Application Publication (10) Pub. No.: US 2008/0171750 A1 Barlow et al. (43) Pub. Date: Jul. 17, 2008 (54) MODULATION OF NEUROGENESIS WITH Related U.S. Application Data USE OF MODAFNL (60) Provisional application No. 60/884,584, filed on Jan. (75) Inventors: Carrolee Barlow, Del Mar, CA 11, 2007. (US); Todd A. Carter, San Diego, CA (US); Andrew Morse, San Publication Classification Diego, CA (US); Kai Treuner, San Diego, CA (US); Kym I. Lorrain, (51) Int. Cl. San Diego, CA (US) A 6LX 3L/2197 (2006.01) A6II 3/165. (2006.01) Correspondence Address: A6IP 25/00 (2006.01) TOWNSEND AND TOWNSEND AND CREW, LLP (52) U.S. Cl. .................................... 514/252.18; 514/618 TWO EMBARCADERO CENTER, EIGHTH FLOOR (57) ABSTRACT SAN FRANCISCO, CA 94111-3834 The instant disclosure describes methods for treating diseases (73) Assignee: BrainCells, Inc., San Diego, CA and conditions of the central and peripheral nervous system (US) by stimulating or increasing neurogenesis. The disclosure includes compositions and methods based on use of modafi (21) Appl. No.: 11/972,467 nil, optionally in combination with one or more other neuro genic agents, to stimulate or activate the formation of new (22) Filed: Jan. 10, 2008 nerve cells. Human Neurogenesis Assay: Modafinil + Buspirone Neuronal Differentiation 130 120 -Modafinil 110- - - Buspirone 100 -Modafinil + Buspirone 10-8.5 10-8.0 107.5 10-7.0 10-6.5 10-6.0 10-5.5 10-5.0 10-4.5 10-40 Conc (M) Patent Application Publication Jul. 17, 2008 Sheet 1 of 8 US 2008/0171 750 A1 Figure 1: Human Neurogenesis Assay: Modafinil + Buspirone Neuronal Differentiation 130 120 -Modafinil 110- - - Buspirone 100 -Modafinil + Buspirone 90 10-8.5 10-8.0 10-7.5 10-7.0 10-6.5 10-6-0 10-5.5 10-5.0 10-4.5 10-40 Conc (M) Patent Application Publication Jul. 17, 2008 Sheet 2 of 8 US 2008/0171 750 A1 Figure 2: Human Astrocyte Differentiation Assay: Modafinil + Buspirone Astrocyte Differentiation 110 100 - Modafinil + Buspirone 90- - - - - MOdafini 80 -- Buspirone 70 60 50 40 30 20 10 O -1, 10-8.0 10-7.5 10-7.0 10-6.5 10-6.0 10-5.5 10-5.0 10-4.5 10-40 Conc (M) Patent Application Publication Jul. 17, 2008 Sheet 3 of 8 US 2008/0171 750 A1 Figure 3: Human Neurogenesis Assay: Modafinil + MKC-231 Neuronal Differentiation 130 120 - - - - MOdafini 110 - - MKC-231 g - MOCafini + MKC-231 80 70 60 50 40 30 20 10 O -10 10-8.5 10-8.0 10-7.5 10-7.0 10-6.5 10-6.0 10-5.5 10-5.0 104.5 10-4.0 Conc (M) Patent Application Publication Jul. 17, 2008 Sheet 4 of 8 US 2008/0171 750 A1 Figure 4: Human Neurogenesis Assay: Modafinil + Acamprosate Neuronal Differentiation 110 100 Modafinil -- Acamprosate -Modafinil + Acamprosate 70 60 50 40 30 20 10 O 19, 10-8.0 10-7.5 10-7.0 10-6.5 10-6.0 10-5.5 10-5.0 10-4.5 10-40 n-m-m-m-m-m-a--am 10-9.5 10-9.0 10-8.5 10-8.0 10-7.0 10-7.0 10-6.5 10-6.0 10-5.5 10-50 Conc (M) Acamprosate Concentratio: Patent Application Publication Jul. 17, 2008 Sheet 5 of 8 US 2008/0171750 A1 Figure 5: Human Neurogenesis Assay: Modafinil + Antalarmin Neuronal Differentiation 110 ----Modafinil 100 -- Antalarm in -MOCafinil + Antalarmin -1 10-8.5 10-8.0 107.5 10-7.0 10-6.5 10-6.0 10-5.5 10-5.0 104.5 10-40 Conc (M) Patent Application Publication Jul. 17, 2008 Sheet 6 of 8 US 2008/0171750 A1 Figure 6: Human Neurogenesis Assay: MOCafinil + MKC-231 Neuronal Differentiation 110 ----MOCafinil 100 90 -- AZasetron 80 -Modafinil + AZasetron 70 60 50 40 30 20 10 19, 10-8.0 107.5 10-7.0 10-6.5 10-6.0 10-5.5 10-5.0 104.5 10-40 Conc (M) Patent Application Publication Jul. 17, 2008 Sheet 7 of 8 US 2008/0171750 A1 Figure 7: Human Neurogenesis Assay: Modafinil + Serotonin (model for Serotonin Reuptake inhibitor) NeurOnal Differentiation 110 100 Modafinil -- Serotonin 8 - Modafinil + Serotonin 70 60 50 40 30 2O 10 O 19, 10-8.0 10-7.5 10-7.0 10-6.5 10-6.0 10-5.5 10-5.0 10-4.5 10-40 Conc (M) Patent Application Publication Jul. 17, 2008 Sheet 8 of 8 US 2008/0171 750 A1 Figure 8: Human Neurogenesis Assay: Modafinil and Armodafinil Neuronal Differentiation - MOOdafini ' ' ' 'Armodafinil 5 O - 19, 10-8.0 10-7.5 10-7.0 10-6.5 10-6.0 10-5.5 10-50 10-4.5 10-40 Conc (M) US 2008/0171 750 A1 Jul. 17, 2008 MODULATION OF NEUROGENESIS WITH of the central and/or peripheral nervous systems. In other USE OF MODAFNL embodiments, the disclosed methods are used to improve cognitive outcomes and mood disorders. CROSS-REFERENCES TO RELATED 0006. In one aspect, methods of modulating, such as by APPLICATIONS stimulating or increasing, neurogenesis are disclosed. The 0001. This application claims priority benefit under 35 neurogenesis may be at the level of a cell or tissue. The cellor U.S.C. S 119(e) to U.S. Provisional Patent Application No. tissue may be present in an animal Subject or a human being, 60/884,584, titled: “MODULATION OF NEUROGENESIS or alternatively be in an in vitro or ex vivo setting. In some WITH USE OF MODAFINIL filed Jan. 11, 2007, the dis embodiments, neurogenesis is stimulated or increased in a closure of which is hereby incorporated by reference in it’s neural cell or tissue, such as that of the central or peripheral entirety for all purposes. nervous system of an animal or human being. In cases of an animal or human, the methods may be practiced in connection FIELD OF THE DISCLOSURE with one or more disease, disorder, or condition of the ner Vous system as present in the animal or human Subject. Thus, 0002 The instant disclosure relates to methods for treating embodiments disclosed herein include methods of treating a diseases and conditions of the central and peripheral nervous disease, disorder, or condition by administering modafinil, or system by stimulating or increasing neurogenesis by use of a prodrug thereof, hereinafter referred to as a “modafinil modafinil (CAS RN 68.693-11-8) or a prodrug thereof, such agent. A modafinil agent may beformulated or used alone, or as in combination with a neurogenic agent. The disclosure in combination with one or more additional neurogenic includes methods based on the application of modafinil, or a agents. prodrug thereof, optionally in combination with a neurogenic 0007 Modafinil has a structure represented by Formula I: agent with activity to stimulate or activate the formation of new nerve cells. I BACKGROUND OF THE DISCLOSURE O O 0003) Neurogenesis is a vital process in the brains of ani mals and humans, whereby new nerve cells are continuously S generated throughout the lifespan of the organism. The newly NH2, born cells are able to differentiate into functional cells of the central nervous system and integrate into existing neural cir cuits in the brain. Neurogenesis is known to persist through out adulthood in two regions of the mammalian brain: the subventricular Zone (SVZ) of the lateral ventricles and the dentate gyrus of the hippocampus. In these regions, multipo 0008 Modafinil can also be represented by the chemical tent neural progenitor cells (NPCs) continue to divide and formula C5H5NOS and is also referred to as moderateafi give rise to new functional neurons and glial cells (for review nil, modiodal, provigil, or 2-benzhydrylsulfinylethanamide. Gage 2000). It has been shown that a variety of factors can Related to modafinil is armodafinil (Nuvigile), a eurogeric stimulate adult hippocampal neurogenesis, e.g., adrenalec drug produced by the pharmaceutical company Cephalon Inc. tomy, Voluntary exercise, enriched environment, hippocam Armodafinil is the R-enantionmer of modafinil (i.e., (-)-2- pus dependent learning and anti-depressants (Yehuda 1989, (R)-(diphenylmethyl)-sulfinyl)acetamide. van Praag 1999, Brown J 2003, Gould 1999, Malberg 2000, 0009 While modafinil and armodafinil have been Santarelli 2003). Other factors, such as adrenal hormones, observed to have neurogenic activity as described herein, they stress, age and drugs of abuse negatively influence neurogen have also been observed to reduced or minimized amounts of esis (Cameron 1994, McEwen 1999, Kuhn 1996, Eisch astrogenesis caused by an agent with greater neurogenic 2004). activity. Thus the disclosure may be practiced with the use of 0004 Citation of the above documents is not intended as a combination of a modafinil agent and another neurogenic an admission that any of the foregoing is pertinent prior art. agent, including a neurogenic agent which produces levels of All statements as to the date or representation as to the con astrogenesis that is advantageously reduced or minimized by tents of these documents is based on the information available the use of a modafinil agent. Of course the disclosure also to the applicant and does not constitute any admission as to includes use of a modafinil agent alone. For example, modafi the correctness of the dates or contents of these documents. nil and/or armodafinil may be used alone or in combination with one more other neurogenic agents. Whether alone or in BRIEF SUMMARY OF THE DISCLOSURE combination with another neurogenic agent, the disclosure 0005 Disclosed herein are compositions and methods for may be practiced based on use of a modafinil agent as a the prophylaxis and treatment of diseases, conditions and “direct' agent, in that it has direct activity via interaction with injuries of the central and peripheral nervous systems by its receptor(s) in cells, or as an “indirect agent in that a stimulating or increasing neurogenesis.