1
|
Li L, Vemireddy V, Mashimo T, Huntington P, Mickey B, Maher E, Bachoo R, Piccirillo SGM. TMOD-22. WILD-TYPE p53 DRIVES A MESENCHYMAL PHENOTYPE AFTER TREATMENT OF PRIMARY GLIOBLASTOMA. Neuro Oncol 2017. [DOI: 10.1093/neuonc/nox168.1059] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
|
2
|
Lee AS, De Jesús-Cortés H, Kabir ZD, Knobbe W, Orr M, Burgdorf C, Huntington P, McDaniel L, Britt JK, Hoffmann F, Brat DJ, Rajadhyaksha AM, Pieper AA. The Neuropsychiatric Disease-Associated Gene cacna1c Mediates Survival of Young Hippocampal Neurons. eNeuro 2016; 3:ENEURO.0006-16.2016. [PMID: 27066530 PMCID: PMC4819284 DOI: 10.1523/eneuro.0006-16.2016] [Citation(s) in RCA: 43] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2016] [Revised: 02/12/2016] [Accepted: 03/09/2016] [Indexed: 02/04/2023] Open
Abstract
Genetic variations in CACNA1C, which encodes the Cav1.2 subunit of L-type calcium channels (LTCCs), are associated with multiple forms of neuropsychiatric disease that manifest high anxiety in patients. In parallel, mice harboring forebrain-specific conditional knockout of cacna1c (forebrain-Cav1.2 cKO) display unusually high anxiety-like behavior. LTCCs in general, including the Cav1.3 subunit, have been shown to mediate differentiation of neural precursor cells (NPCs). However, it has not previously been determined whether Cav1.2 affects postnatal hippocampal neurogenesis in vivo. Here, we show that forebrain-Cav1.2 cKO mice exhibit enhanced cell death of young hippocampal neurons, with no change in NPC proliferation, hippocampal size, dentate gyrus thickness, or corticosterone levels compared with wild-type littermates. These mice also exhibit deficits in brain levels of brain-derived neurotrophic factor (BDNF), and Cre recombinase-mediated knockdown of adult hippocampal Cav1.2 recapitulates the deficit in young hippocampal neurons survival. Treatment of forebrain-Cav1.2 cKO mice with the neuroprotective agent P7C3-A20 restored the net magnitude of postnatal hippocampal neurogenesis to wild-type levels without ameliorating their deficit in BDNF expression. The role of Cav1.2 in young hippocampal neurons survival may provide new approaches for understanding and treating neuropsychiatric disease associated with aberrations in CACNA1C. Visual Abstract.
Collapse
Affiliation(s)
- Anni S. Lee
- Feil Family Brain and Mind Research Institute, Weill Cornell Medicine, Cornell University, New York, New York 10065
- Division of Pediatric Neurology, Department of Pediatrics, Weill Cornell Medicine, Cornell University, New York, New York 10065
| | - Héctor De Jesús-Cortés
- Neuroscience Graduate Program, UT Southwestern Medical Center, Dallas, Texas 75390
- Department of Psychiatry, University of Iowa, Carver College of Medicine, Iowa City, Iowa 52242
| | - Zeeba D. Kabir
- Division of Pediatric Neurology, Department of Pediatrics, Weill Cornell Medicine, Cornell University, New York, New York 10065
| | - Whitney Knobbe
- Department of Psychiatry, UT Southwestern Medical Center, Dallas, Texas 75390
| | - Madeline Orr
- Department of Psychiatry, UT Southwestern Medical Center, Dallas, Texas 75390
| | - Caitlin Burgdorf
- Feil Family Brain and Mind Research Institute, Weill Cornell Medicine, Cornell University, New York, New York 10065
- Division of Pediatric Neurology, Department of Pediatrics, Weill Cornell Medicine, Cornell University, New York, New York 10065
| | - Paula Huntington
- Department of Psychiatry, UT Southwestern Medical Center, Dallas, Texas 75390
| | - Latisha McDaniel
- Department of Psychiatry, University of Iowa, Carver College of Medicine, Iowa City, Iowa 52242
| | - Jeremiah K. Britt
- Department of Psychiatry, University of Iowa, Carver College of Medicine, Iowa City, Iowa 52242
| | - Franz Hoffmann
- Institute of Pharmacology, Technical University Munich, Munich, Germany
- Research Group 923, Technical University Munich, Munich, Germany
| | - Daniel J. Brat
- Pathology and Laboratory Medicine, Emory University School of Medicine, Atlanta, Georgia 30322
| | - Anjali M. Rajadhyaksha
- Feil Family Brain and Mind Research Institute, Weill Cornell Medicine, Cornell University, New York, New York 10065
- Division of Pediatric Neurology, Department of Pediatrics, Weill Cornell Medicine, Cornell University, New York, New York 10065
- Weill Cornell Autism Research Program, Weill Cornell Medical College, New York, New York 10065
| | - Andrew A. Pieper
- Department of Psychiatry, University of Iowa, Carver College of Medicine, Iowa City, Iowa 52242
- Weill Cornell Autism Research Program, Weill Cornell Medical College, New York, New York 10065
- Department of Neurology, University of Iowa, Carver College of Medicine, Iowa City, Iowa 52242
- Department of Free Radical and Radiation Biology Program, Department of Radiation Oncology Holden Comprehensive Cancer Center, University of Iowa, Carver College of Medicine, Iowa City, Iowa 52242
- Department of Veteran Affairs, University of Iowa Carver College of Medicine, Iowa City, Iowa 52242
| |
Collapse
|
3
|
Naidoo J, De Jesus-Cortes H, Huntington P, Estill S, Morlock LK, Starwalt R, Mangano TJ, Williams NS, Pieper AA, Ready JM. Discovery of a neuroprotective chemical, (S)-N-(3-(3,6-dibromo-9H-carbazol-9-yl)-2-fluoropropyl)-6-methoxypyridin-2-amine [(-)-P7C3-S243], with improved druglike properties. J Med Chem 2014; 57:3746-54. [PMID: 24697290 PMCID: PMC4206694 DOI: 10.1021/jm401919s] [Citation(s) in RCA: 56] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
![]()
(−)-P7C3-S243
is a neuroprotective aminopropyl carbazole
with improved druglike properties compared with previously reported
compounds in the P7C3 class. It protects developing neurons in a mouse
model of hippocampal neurogenesis and protects mature neurons within
the substantia nigra in a mouse model of Parkinson’s disease.
A short, enantioselective synthesis provides the neuroprotective agent
in optically pure form. It is nontoxic, orally bioavailable, metabolically
stable, and able to cross the blood–brain barrier. As such,
it represents a valuable lead compound for the development of drugs
to treat neurodegenerative diseases and traumatic brain injury.
Collapse
Affiliation(s)
- Jacinth Naidoo
- Departments of †Biochemistry and ‡Neuroscience, University of Texas Southwestern Medical Center , 5323 Harry Hines Boulevard, Dallas, Texas 75390-9038, United States
| | | | | | | | | | | | | | | | | | | |
Collapse
|
4
|
De Jesús-Cortés H, Xu P, Drawbridge J, Estill SJ, Huntington P, Tran S, Britt J, Tesla R, Morlock L, Naidoo J, Melito LM, Wang G, Williams NS, Ready JM, McKnight SL, Pieper AA. Neuroprotective efficacy of aminopropyl carbazoles in a mouse model of Parkinson disease. Proc Natl Acad Sci U S A 2012; 109:17010-5. [PMID: 23027934 PMCID: PMC3479520 DOI: 10.1073/pnas.1213956109] [Citation(s) in RCA: 104] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
We previously reported the discovery of P7C3, an aminopropyl carbazole having proneurogenic and neuroprotective properties in newborn neural precursor cells of the dentate gyrus. Here, we provide evidence that P7C3 also protects mature neurons in brain regions outside of the hippocampus. P7C3 blocks 1-methyl-4-phenyl-1,2,3,6-tetrahydropyridine (MPTP)-mediated cell death of dopaminergic neurons in the substantia nigra of adult mice, a model of Parkinson disease (PD). Dose-response studies show that the P7C3 analog P7C3A20 blocks cell death with even greater potency and efficacy, which parallels the relative potency and efficacy of these agents in blocking apoptosis of newborn neural precursor cells of the dentate gyrus. P7C3 and P7C3A20 display similar relative effects in blocking 1-methyl-4-phenylpyridinium (MPP(+))-mediated death of dopaminergic neurons in Caenorhabditis elegans, as well as in preserving C. elegans mobility following MPP(+) exposure. Dimebon, an antihistaminergic drug that is weakly proneurogenic and neuroprotective in the dentate gyrus, confers no protection in either the mouse or the worm models of PD. We further demonstrate that the hippocampal proneurogenic efficacy of eight additional analogs of P7C3 correlates with their protective efficacy in MPTP-mediated neurotoxicity. In vivo screening of P7C3 analogs for proneurogenic efficacy in the hippocampus may thus provide a reliable means of predicting neuroprotective efficacy. We propose that the chemical scaffold represented by P7C3 and P7C3A20 provides a basis for optimizing and advancing pharmacologic agents for the treatment of patients with PD.
Collapse
Affiliation(s)
| | - Pin Xu
- Departments of Psychiatry and
| | | | - Sandi Jo Estill
- Biochemistry, University of Texas Southwestern Medical Center, Dallas, TX 75390
| | | | | | | | - Rachel Tesla
- Biochemistry, University of Texas Southwestern Medical Center, Dallas, TX 75390
| | - Lorraine Morlock
- Biochemistry, University of Texas Southwestern Medical Center, Dallas, TX 75390
| | - Jacinth Naidoo
- Biochemistry, University of Texas Southwestern Medical Center, Dallas, TX 75390
| | - Lisa M. Melito
- Biochemistry, University of Texas Southwestern Medical Center, Dallas, TX 75390
| | - Gelin Wang
- Biochemistry, University of Texas Southwestern Medical Center, Dallas, TX 75390
| | - Noelle S. Williams
- Biochemistry, University of Texas Southwestern Medical Center, Dallas, TX 75390
| | - Joseph M. Ready
- Biochemistry, University of Texas Southwestern Medical Center, Dallas, TX 75390
| | - Steven L. McKnight
- Biochemistry, University of Texas Southwestern Medical Center, Dallas, TX 75390
| | - Andrew A. Pieper
- Departments of Psychiatry and
- Biochemistry, University of Texas Southwestern Medical Center, Dallas, TX 75390
| |
Collapse
|
5
|
Tesla R, Wolf HP, Xu P, Drawbridge J, Estill SJ, Huntington P, McDaniel L, Knobbe W, Burket A, Tran S, Starwalt R, Morlock L, Naidoo J, Williams NS, Ready JM, McKnight SL, Pieper AA. Neuroprotective efficacy of aminopropyl carbazoles in a mouse model of amyotrophic lateral sclerosis. Proc Natl Acad Sci U S A 2012; 109:17016-21. [PMID: 23027932 PMCID: PMC3479516 DOI: 10.1073/pnas.1213960109] [Citation(s) in RCA: 106] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023] Open
Abstract
We previously reported the discovery of P7C3, an aminopropyl carbazole having proneurogenic and neuroprotective properties in newborn neural precursor cells of the hippocampal dentate gyrus. We have further found that chemicals having efficacy in this in vivo screening assay also protect dopaminergic neurons of the substantia nigra following exposure to the neurotoxin 1-methyl-4-phenyl-1,2,3,6-tetrahydropyridine, a mouse model of Parkinson disease. Here, we provide evidence that an active analog of P7C3, known as P7C3A20, protects ventral horn spinal cord motor neurons from cell death in the G93A-SOD1 mutant mouse model of amyotrophic lateral sclerosis (ALS). P7C3A20 is efficacious in this model when administered at disease onset, and protection from cell death correlates with preservation of motor function in assays of walking gait and in the accelerating rotarod test. The prototypical member of this series, P7C3, delays disease progression in G93A-SOD1 mice when administration is initiated substantially earlier than the expected time of symptom onset. Dimebon, an antihistaminergic drug with significantly weaker proneurogenic and neuroprotective efficacy than P7C3, confers no protection in this ALS model. We propose that the chemical scaffold represented by P7C3 and P7C3A20 may provide a basis for the discovery and optimization of pharmacologic agents for the treatment of ALS.
Collapse
Affiliation(s)
- Rachel Tesla
- Biochemistry, University of Texas Southwestern Medical Center, Dallas, TX 75390
| | | | - Pin Xu
- Departments of Psychiatry and
| | | | - Sandi Jo Estill
- Biochemistry, University of Texas Southwestern Medical Center, Dallas, TX 75390
| | | | - LaTisha McDaniel
- Biochemistry, University of Texas Southwestern Medical Center, Dallas, TX 75390
| | | | | | | | - Ruth Starwalt
- Biochemistry, University of Texas Southwestern Medical Center, Dallas, TX 75390
| | - Lorraine Morlock
- Biochemistry, University of Texas Southwestern Medical Center, Dallas, TX 75390
| | - Jacinth Naidoo
- Biochemistry, University of Texas Southwestern Medical Center, Dallas, TX 75390
| | - Noelle S. Williams
- Biochemistry, University of Texas Southwestern Medical Center, Dallas, TX 75390
| | - Joseph M. Ready
- Biochemistry, University of Texas Southwestern Medical Center, Dallas, TX 75390
| | - Steven L. McKnight
- Biochemistry, University of Texas Southwestern Medical Center, Dallas, TX 75390
| | - Andrew A. Pieper
- Departments of Psychiatry and
- Biochemistry, University of Texas Southwestern Medical Center, Dallas, TX 75390
| |
Collapse
|
6
|
Pieper AA, Xie S, Capota E, Estill SJ, Zhong J, Long JM, Becker GL, Huntington P, Goldman SE, Shen CH, Capota M, Britt JK, Kotti T, Ure K, Brat DJ, Williams NS, MacMillan KS, Naidoo J, Melito L, Hsieh J, De Brabander J, Ready JM, McKnight SL. Discovery of a proneurogenic, neuroprotective chemical. Cell 2010; 142:39-51. [PMID: 20603013 DOI: 10.1016/j.cell.2010.06.018] [Citation(s) in RCA: 282] [Impact Index Per Article: 20.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2010] [Revised: 06/04/2010] [Accepted: 06/10/2010] [Indexed: 11/29/2022]
Abstract
An in vivo screen was performed in search of chemicals capable of enhancing neuron formation in the hippocampus of adult mice. Eight of 1000 small molecules tested enhanced neuron formation in the subgranular zone of the dentate gyrus. Among these was an aminopropyl carbazole, designated P7C3, endowed with favorable pharmacological properties. In vivo studies gave evidence that P7C3 exerts its proneurogenic activity by protecting newborn neurons from apoptosis. Mice missing the gene encoding neuronal PAS domain protein 3 (NPAS3) are devoid of hippocampal neurogenesis and display malformation and electrophysiological dysfunction of the dentate gyrus. Prolonged administration of P7C3 to npas3(-/-) mice corrected these deficits by normalizing levels of apoptosis of newborn hippocampal neurons. Prolonged administration of P7C3 to aged rats also enhanced neurogenesis in the dentate gyrus, impeded neuron death, and preserved cognitive capacity as a function of terminal aging. PAPERCLIP:
Collapse
Affiliation(s)
- Andrew A Pieper
- Department of Biochemistry, UT Southwestern Medical Center, 5323 Harry Hines Boulevard, Dallas, TX 75390-9152, USA.
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Collapse
|
7
|
Warwick C, Terras M, Huntington P, Pappa N. If You Build It Will They Come? The LAIRAH Study: Quantifying the Use of Online Resources in the Arts and Humanities through Statistical Analysis of User Log Data. ACTA ACUST UNITED AC 2007. [DOI: 10.1093/llc/fqm045] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
|
8
|
Abstract
An exit questionnaire survey of 150 hospital users of a touch screen health information kiosk was undertaken. It was compiled by Royal Cornwall Hospitals NHS to evaluate kiosk use and was reanalysed by researchers at City University to determine whether the information obtained went anyway to meeting patients' information needs. The study established two effective outcome variables on kiosk use: whether the information found answered the users' questions and if users intended, after using the kiosk, to find more information elsewhere. Two-thirds of respondents said that the information found had answered their question, whilst 16% said that after using the kiosk they still had further questions and intended to talk to a health professional to obtain this information. The variables found to have an impact on the information outcome included: gender, navigational ease, object of search, and ease of reading and understanding the information.
Collapse
Affiliation(s)
- D Nicholas
- Department of Information Science, City University, London.
| | | | | | | |
Collapse
|
9
|
Nicholas D, Huntington P, Adam R, Watkinson A. Bibliographical information on books: a survey of provision and use in academic and public libraries. Journal of Librarianship and Information Science 2001. [DOI: 10.1177/0961000014244919] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
|
10
|
Abstract
BACKGROUND Digital health information is available on a wide variety of platforms including PC-access of the Internet, Wireless Application Protocol phones, CD-ROMs, and touch screen public kiosks. All these platforms record details of user sessions in transaction log files, and there is a growing body of research into the evaluation of this data. However, there is very little research that has examined the problems of comparing the transaction log files of kiosks and the Internet. OBJECTIVES To provide a first step towards examining the problems of comparing the transaction log files of kiosks and the Internet. METHODS We studied two platforms: touch screen kiosks and a comparable Web site. For both of these platforms, we examined the menu structure (which affects transaction log file data), the log-file structure, and the metrics derived from log-file records. RESULTS We found substantial differences between the generated metrics. CONCLUSIONS None of the metrics discussed can be regarded as an effective way of comparing the use of kiosks and Web sites. Two metrics stand out as potentially comparable and valuable: the number of user sessions per hour and user penetration of pages.
Collapse
Affiliation(s)
- D Nicholas
- The Internet Studies Research Group, Department of Information Science, City University, London, EC1V 0HB, UK.
| | | | | |
Collapse
|
11
|
Black MM, Black A, Huntington P. Prinzmetal's variant angina with syncope. Treatment with permanent demand pacemaker. N Y State J Med 1976; 76:255-8. [PMID: 1061876] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
|