PMID- 21945230 OWN - NLM STAT- MEDLINE DCOM- 20111220 LR - 20211020 IS - 1090-2430 (Electronic) IS - 0014-4886 (Print) IS - 0014-4886 (Linking) VI - 232 IP - 2 DP - 2011 Dec TI - Human nasal olfactory epithelium as a dynamic marker for CNS therapy development. PG - 203-11 LID - 10.1016/j.expneurol.2011.09.002 [doi] AB - Discovery of new central nervous system (CNS) acting therapeutics has been slowed down by the lack of useful applicable biomarkers of disease or drug action often due to inaccessibility of relevant human CNS tissue and cell types. In recent years, non-neuronal cells, such as astrocytes, have been reported to play a highly significant role in neurodegenerative diseases, CNS trauma, as well as psychiatric disease and have become a target for small molecule and biologic therapies. We report the development of a method for measuring pharmacodynamic changes induced by potential CNS therapeutics using nasal olfactory neural tissue biopsy. We validated this approach using a potential astrocyte-targeted therapeutic, thiamphenicol, in a pre-clinical rodent study as well as a phase 1 human trial. In both settings, analysis of the olfactory epithelial tissue revealed biological activity of thiamphenicol at the drug target, the excitatory amino acid transporter 2 (EAAT2). Therefore, this biomarker approach may provide a reliable evaluation of CNS glial-directed therapies and hopefully improve throughput for nervous system drug discovery. CI - Copyright (c) 2011 Elsevier Inc. All rights reserved. FAU - Sattler, Rita AU - Sattler R AD - Department of Neurology, Johns Hopkins University, Baltimore, MD 21205, USA. FAU - Ayukawa, Yoko AU - Ayukawa Y FAU - Coddington, Luke AU - Coddington L FAU - Sawa, Akira AU - Sawa A FAU - Block, David AU - Block D FAU - Chipkin, Richard AU - Chipkin R FAU - Rothstein, Jeffrey D AU - Rothstein JD LA - eng GR - NS33958/NS/NINDS NIH HHS/United States GR - U01 NS050094-05/NS/NINDS NIH HHS/United States GR - R01 NS033958-17/NS/NINDS NIH HHS/United States GR - U01 NS050094/NS/NINDS NIH HHS/United States GR - R21 NS067117/NS/NINDS NIH HHS/United States GR - R21 NS067117-02/NS/NINDS NIH HHS/United States GR - R01 NS033958/NS/NINDS NIH HHS/United States PT - Clinical Trial PT - Journal Article PT - Research Support, N.I.H., Extramural PT - Research Support, Non-U.S. Gov't DEP - 20110916 PL - United States TA - Exp Neurol JT - Experimental neurology JID - 0370712 RN - 0 (Anti-Bacterial Agents) RN - 0 (Biomarkers) RN - 0 (Excitatory Amino Acid Transporter 2) RN - 0 (Glutamate Plasma Membrane Transport Proteins) RN - 0 (SLC1A2 protein, human) RN - EC 1.13.12.- (Luciferases) RN - FLQ7571NPM (Thiamphenicol) SB - IM CIN - Nat Rev Neurol. 2011 Nov;7(11):596. PMID: 22009286 CIN - Exp Neurol. 2012 Jun;235(2):508-12. PMID: 22465461 MH - Animals MH - Animals, Newborn MH - Anti-Bacterial Agents/blood/pharmacokinetics MH - Astrocytes/*cytology/metabolism MH - Biological Assay/*methods MH - Biomarkers/metabolism MH - Biopsy MH - Cell Line, Transformed MH - Central Nervous System/cytology MH - Drug Design MH - Drug Monitoring/*methods MH - Excitatory Amino Acid Transporter 2 MH - Gene Expression/physiology MH - Glutamate Plasma Membrane Transport Proteins/genetics/metabolism MH - Humans MH - Luciferases/genetics MH - Mice MH - Olfactory Mucosa/cytology/metabolism MH - Olfactory Receptor Neurons/*cytology/metabolism MH - Primary Cell Culture MH - Thiamphenicol/blood/*pharmacokinetics PMC - PMC3220936 MID - NIHMS331305 COIS- Conflict of Interest: J.D.R. and R.C. have an equity interest in Psyadon Pharmaceuticals; J.D.R. and R.C. are on the Psyadon Board of Directors. D. B. has equity interest and serves on the Board of Directors of Gliknik Pharma. R.S. and J.D.R. are on a pending patent for the use of thiamphenicol in various neurological and psychiatric disorders. No other authors have competing interests to declare. EDAT- 2011/09/29 06:00 MHDA- 2011/12/21 06:00 PMCR- 2012/12/01 CRDT- 2011/09/28 06:00 PHST- 2011/01/17 00:00 [received] PHST- 2011/07/12 00:00 [revised] PHST- 2011/09/04 00:00 [accepted] PHST- 2011/09/28 06:00 [entrez] PHST- 2011/09/29 06:00 [pubmed] PHST- 2011/12/21 06:00 [medline] PHST- 2012/12/01 00:00 [pmc-release] AID - S0014-4886(11)00309-8 [pii] AID - 10.1016/j.expneurol.2011.09.002 [doi] PST - ppublish SO - Exp Neurol. 2011 Dec;232(2):203-11. doi: 10.1016/j.expneurol.2011.09.002. Epub 2011 Sep 16.