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Tian Z, Lu XT, Jiang X, Tian J. Bryostatin-1: a promising compound for neurological disorders. Front Pharmacol 2023; 14:1187411. [PMID: 37351510 PMCID: PMC10282138 DOI: 10.3389/fphar.2023.1187411] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2023] [Accepted: 05/23/2023] [Indexed: 06/24/2023] Open
Abstract
The central nervous system (CNS) is the most complex system in human body, and there is often a lack of effective treatment strategies for the disorders related with CNS. Natural compounds with multiple pharmacological activities may offer better options because they have broad cellular targets and potentially produce synergic and integrative effects. Bryostatin-1 is one of such promising compounds, a macrolide separated from marine invertebrates. Bryostatin-1 has been shown to produce various biological activities through binding with protein kinase C (PKC). In this review, we mainly summarize the pharmacological effects of bryostatin-1 in the treatment of multiple neurological diseases in preclinical studies and clinical trials. Bryostatin-1 is shown to have great therapeutic potential for Alzheimer's disease, multiple sclerosis, fragile X syndrome, stroke, traumatic brain injury, and depression. It exhibits significant rescuing effects on the deficits of spatial learning, cognitive function, memory and other neurological functions caused by diseases, producing good neuroprotective effects. The promising neuropharmacological activities of bryostatin-1 suggest that it is a potential candidate for the treatment of related neurological disorders although there are still some issues needed to be addressed before its application in clinic.
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Affiliation(s)
- Zhen Tian
- College of Pharmaceutical Sciences, Southwest University, Chongqing, China
| | - Xin-Tong Lu
- College of Pharmaceutical Sciences, Southwest University, Chongqing, China
| | - Xun Jiang
- Department of Pediatrics, Tangdu Hospital of Fourth Military Medical University, Xi’an, China
| | - Jiao Tian
- Department of Infection, Children’s Hospital of Chongqing Medical University, National Clinical Research Center for Child Health and Disorders, Ministry of Education Key Laboratory of Child Development and Disorders, Chongqing Key Laboratory of Child Infection and Immunity, The First Batch of Key Disciplines on Public Health in Chongqing, Chongqing, China
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2
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Döhne N, Falck A, Janach GMS, Byvaltcev E, Strauss U. Interferon-γ augments GABA release in the developing neocortex via nitric oxide synthase/soluble guanylate cyclase and constrains network activity. Front Cell Neurosci 2022; 16:913299. [PMID: 36035261 PMCID: PMC9401097 DOI: 10.3389/fncel.2022.913299] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2022] [Accepted: 07/13/2022] [Indexed: 11/13/2022] Open
Abstract
Interferon-γ (IFN-γ), a cytokine with neuromodulatory properties, has been shown to enhance inhibitory transmission. Because early inhibitory neurotransmission sculpts functional neuronal circuits, its developmental alteration may have grave consequences. Here, we investigated the acute effects of IFN-γ on γ-amino-butyric acid (GABA)ergic currents in layer 5 pyramidal neurons of the somatosensory cortex of rats at the end of the first postnatal week, a period of GABA-dependent cortical maturation. IFN-γ acutely increased the frequency and amplitude of spontaneous/miniature inhibitory postsynaptic currents (s/mIPSC), and this could not be reversed within 30 min. Neither the increase in amplitude nor frequency of IPSCs was due to upregulated interneuron excitability as revealed by current clamp recordings of layer 5 interneurons labeled with VGAT-Venus in transgenic rats. As we previously reported in more mature animals, IPSC amplitude increase upon IFN-γ activity was dependent on postsynaptic protein kinase C (PKC), indicating a similar activating mechanism. Unlike augmented IPSC amplitude, however, we did not consistently observe an increased IPSC frequency in our previous studies on more mature animals. Focusing on increased IPSC frequency, we have now identified a different activating mechanism-one that is independent of postsynaptic PKC but is dependent on inducible nitric oxide synthase (iNOS) and soluble guanylate cyclase (sGC). In addition, IFN-γ shifted short-term synaptic plasticity toward facilitation as revealed by a paired-pulse paradigm. The latter change in presynaptic function was not reproduced by the application of a nitric oxide donor. Functionally, IFN-γ-mediated alterations in GABAergic transmission overall constrained early neocortical activity in a partly nitric oxide-dependent manner as revealed by microelectrode array field recordings in brain slices analyzed with a spike-sorting algorithm. In summary, with IFN-γ-induced, NO-dependent augmentation of spontaneous GABA release, we have here identified a mechanism by which inflammation in the central nervous system (CNS) plausibly modulates neuronal development.
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Affiliation(s)
- Noah Döhne
- Institute of Cell Biology and Neurobiology, Charité—Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin, Humboldt-Universität zu Berlin, Berlin, Germany
| | - Alice Falck
- Institute of Cell Biology and Neurobiology, Charité—Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin, Humboldt-Universität zu Berlin, Berlin, Germany
| | - Gabriel M. S. Janach
- Institute of Cell Biology and Neurobiology, Charité—Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin, Humboldt-Universität zu Berlin, Berlin, Germany
| | - Egor Byvaltcev
- Institute of Cell Biology and Neurobiology, Charité—Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin, Humboldt-Universität zu Berlin, Berlin, Germany
- Institute of Neuroscience, Lobachevsky State, University of Nizhny Novgorod, Nizhny Novgorod, Russia
| | - Ulf Strauss
- Institute of Cell Biology and Neurobiology, Charité—Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin, Humboldt-Universität zu Berlin, Berlin, Germany
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3
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Rocha A, Trujillo KA. Neurotoxicity of low-level lead exposure: History, mechanisms of action, and behavioral effects in humans and preclinical models. Neurotoxicology 2019; 73:58-80. [PMID: 30836127 PMCID: PMC7462347 DOI: 10.1016/j.neuro.2019.02.021] [Citation(s) in RCA: 94] [Impact Index Per Article: 18.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2018] [Revised: 02/26/2019] [Accepted: 02/27/2019] [Indexed: 12/20/2022]
Abstract
Lead is a neurotoxin that produces long-term, perhaps irreversible, effects on health and well-being. This article summarizes clinical and preclinical studies that have employed a variety of research techniques to examine the neurotoxic effects of low levels of lead exposure. A historical perspective is presented, followed by an overview of studies that examined behavioral and cognitive outcomes. In addition, a short summary of potential mechanisms of action is provided with a focus on calcium-dependent processes. The current level of concern, or reference level, set by the CDC is 5 μg/dL of lead in blood and a revision to 3.5 μg/dL has been suggested. However, levels of lead below 3 μg/dL have been shown to produce diminished cognitive function and maladaptive behavior in humans and animal models. Because much of the research has focused on higher concentrations of lead, work on low concentrations is needed to better understand the neurobehavioral effects and mechanisms of action of this neurotoxic metal.
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MESH Headings
- Adolescent
- Adolescent Behavior/drug effects
- Adolescent Development/drug effects
- Adult
- Age Factors
- Aged
- Animals
- Brain/drug effects
- Brain/growth & development
- Child
- Child Behavior/drug effects
- Child Development/drug effects
- Child, Preschool
- Cognition/drug effects
- Dose-Response Relationship, Drug
- History, 20th Century
- History, 21st Century
- Humans
- Lead Poisoning, Nervous System, Adult/history
- Lead Poisoning, Nervous System, Adult/physiopathology
- Lead Poisoning, Nervous System, Adult/psychology
- Lead Poisoning, Nervous System, Childhood/history
- Lead Poisoning, Nervous System, Childhood/physiopathology
- Lead Poisoning, Nervous System, Childhood/psychology
- Mice
- Middle Aged
- Rats
- Risk Assessment
- Risk Factors
- Toxicity Tests
- Young Adult
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Affiliation(s)
- Angelica Rocha
- California State University San Marcos, San Marcos, CA 92069, USA.
| | - Keith A Trujillo
- California State University San Marcos, San Marcos, CA 92069, USA
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4
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Hamidi N, Nozad A, Sheikhkanloui Milan H, Amani M. Okadaic acid attenuates short-term and long-term synaptic plasticity of hippocampal dentate gyrus neurons in rats. Neurobiol Learn Mem 2019; 158:24-31. [PMID: 30630043 DOI: 10.1016/j.nlm.2019.01.007] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2018] [Revised: 11/13/2018] [Accepted: 01/05/2019] [Indexed: 01/04/2023]
Abstract
Protein phosphorylation states have a pivotal role in regulation of synaptic plasticity and long-term modulation of synaptic transmission. Serine/threonine protein phosphatase 1 (PP1) and 2A (PP2A) have a critical effect on various regulatory mechanisms involved in synaptic plasticity, learning and memory. Okadaic acid (OKA), a potent inhibitor of PP1 and PP2A, reportedly leads to cognitive decline and Alzheimer's disease (AD)-like pathology. The aim of this study was to examine the effect of OKA on electrophysiological characteristics of hippocampal dentate gyrus (DG) neurons in vivo. Male Wistar rats were divided into two control and OKA groups. OKA was injected intracerebroventricularly (i.c.v.) into lateral ventricles and after two weeks the long-term potentiation (LTP) and paired-pulse responses recorded from hippocampal perforant path-DG synapses in order to assess short-term and long-term synaptic plasticity. Results of this study revealed that OKA-induced inhibition of PP1 and PP2A activity drastically attenuates the field excitatory postsynaptic potential (fEPSP) slope and population spike (PS) amplitude following paired pulse and high frequency stimulation (HFS) of hippocampal DG neurons indicating pre- and post-synaptic involvement in electrical activity of these neurons. Administration of OKA impaired the short-term and long-term spatial memories conducted by Y-maze and passive avoidance tests, respectively. OKA-induced attenuation in electrophysiological activity and consequent memory deficits also provide a beneficial tool for studying neurodegenerative disorders such as AD.
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Affiliation(s)
- Nasrin Hamidi
- Department of Physiology, School of Medicine, Ardabil University of Medical Sciences, Ardabil, Iran
| | - Abdollah Nozad
- Department of Physiology, School of Medicine, Ardabil University of Medical Sciences, Ardabil, Iran
| | | | - Mohammad Amani
- Department of Physiology, School of Medicine, Ardabil University of Medical Sciences, Ardabil, Iran; Department of Anatomy and Neurobiology, University of California, Irvine, CA 92697, USA.
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5
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Zhang Y, Guo Q, Sun X, Lu J, Cao Y, Pu Q, Chu Z, Gao L, Song Z. Total Synthesis of Bryostatin 8 Using an Organosilane-Based Strategy. Angew Chem Int Ed Engl 2017. [DOI: 10.1002/ange.201711452] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Yuebao Zhang
- Key Laboratory of Drug-Targeting and Drug Delivery System of the Education Ministry, West China School of Pharmacy; Sichuan University; Chengdu 610041 China
| | - Qianyou Guo
- Key Laboratory of Drug-Targeting and Drug Delivery System of the Education Ministry, West China School of Pharmacy; Sichuan University; Chengdu 610041 China
| | - Xianwei Sun
- Key Laboratory of Drug-Targeting and Drug Delivery System of the Education Ministry, West China School of Pharmacy; Sichuan University; Chengdu 610041 China
| | - Ji Lu
- Key Laboratory of Drug-Targeting and Drug Delivery System of the Education Ministry, West China School of Pharmacy; Sichuan University; Chengdu 610041 China
| | - Yanjun Cao
- Key Laboratory of Drug-Targeting and Drug Delivery System of the Education Ministry, West China School of Pharmacy; Sichuan University; Chengdu 610041 China
| | - Qiang Pu
- Key Laboratory of Drug-Targeting and Drug Delivery System of the Education Ministry, West China School of Pharmacy; Sichuan University; Chengdu 610041 China
| | - Zhiwen Chu
- Key Laboratory of Drug-Targeting and Drug Delivery System of the Education Ministry, West China School of Pharmacy; Sichuan University; Chengdu 610041 China
| | - Lu Gao
- Key Laboratory of Drug-Targeting and Drug Delivery System of the Education Ministry, West China School of Pharmacy; Sichuan University; Chengdu 610041 China
| | - Zhenlei Song
- Key Laboratory of Drug-Targeting and Drug Delivery System of the Education Ministry, West China School of Pharmacy; Sichuan University; Chengdu 610041 China
- State Key Laboratory of Elemento-organic Chemistry; Nankai University; Tianjin 300071 China
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6
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Zhang Y, Guo Q, Sun X, Lu J, Cao Y, Pu Q, Chu Z, Gao L, Song Z. Total Synthesis of Bryostatin 8 Using an Organosilane-Based Strategy. Angew Chem Int Ed Engl 2017; 57:942-946. [PMID: 29210495 DOI: 10.1002/anie.201711452] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2017] [Indexed: 11/12/2022]
Affiliation(s)
- Yuebao Zhang
- Key Laboratory of Drug-Targeting and Drug Delivery System of the Education Ministry, West China School of Pharmacy; Sichuan University; Chengdu 610041 China
| | - Qianyou Guo
- Key Laboratory of Drug-Targeting and Drug Delivery System of the Education Ministry, West China School of Pharmacy; Sichuan University; Chengdu 610041 China
| | - Xianwei Sun
- Key Laboratory of Drug-Targeting and Drug Delivery System of the Education Ministry, West China School of Pharmacy; Sichuan University; Chengdu 610041 China
| | - Ji Lu
- Key Laboratory of Drug-Targeting and Drug Delivery System of the Education Ministry, West China School of Pharmacy; Sichuan University; Chengdu 610041 China
| | - Yanjun Cao
- Key Laboratory of Drug-Targeting and Drug Delivery System of the Education Ministry, West China School of Pharmacy; Sichuan University; Chengdu 610041 China
| | - Qiang Pu
- Key Laboratory of Drug-Targeting and Drug Delivery System of the Education Ministry, West China School of Pharmacy; Sichuan University; Chengdu 610041 China
| | - Zhiwen Chu
- Key Laboratory of Drug-Targeting and Drug Delivery System of the Education Ministry, West China School of Pharmacy; Sichuan University; Chengdu 610041 China
| | - Lu Gao
- Key Laboratory of Drug-Targeting and Drug Delivery System of the Education Ministry, West China School of Pharmacy; Sichuan University; Chengdu 610041 China
| | - Zhenlei Song
- Key Laboratory of Drug-Targeting and Drug Delivery System of the Education Ministry, West China School of Pharmacy; Sichuan University; Chengdu 610041 China
- State Key Laboratory of Elemento-organic Chemistry; Nankai University; Tianjin 300071 China
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7
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Cohan CH, Stradecki-Cohan HM, Morris-Blanco KC, Khoury N, Koronowski KB, Youbi M, Wright CB, Perez-Pinzon MA. Protein kinase C epsilon delays latency until anoxic depolarization through arc expression and GluR2 internalization. J Cereb Blood Flow Metab 2017; 37:3774-3788. [PMID: 28585865 PMCID: PMC5718329 DOI: 10.1177/0271678x17712178] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Global cerebral ischemia is a debilitating injury that damages the CA1 region of the hippocampus, an area important for learning and memory. Protein kinase C epsilon (PKCɛ) activation is a critical component of many neuroprotective treatments. The ability of PKCɛ activation to regulate AMPA receptors (AMPARs) remains unexplored despite the role of AMPARs in excitotoxicity after brain ischemia. We determined that PKCɛ activation increased expression of a protein linked to learning and memory, activity-regulated cytoskeleton-associated protein (arc). Also, arc is necessary for neuroprotection and confers protection through decreasing AMPAR currents via GluR2 internalization. In vivo, activation of PKCɛ increased arc expression through a BDNF/TrkB pathway, and decreased GluR2 mRNA levels. In hippocampal cultured slices, PKCɛ activation decreased AMPAR current amplitudes in an arc- and GluR2-dependent manner. Additionally, PKCɛ activation triggered an arc- and GluR2 internalization-dependent delay in latency until anoxic depolarization. Inhibiting arc also blocked PKCɛ-mediated neuroprotection against lethal oxygen and glucose deprivation. These data characterize a novel PKCɛ-dependent mechanism that for the first time defines a role for arc and AMPAR internalization in conferring neuroprotection.
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Affiliation(s)
- Charles H Cohan
- 1 Cerebral Vascular Disease Research Laboratories, University of Miami Leonard M. Miller School of Medicine, Miami, FL, USA.,2 Evelyn F. McKnight Brain Institute, University of Miami Leonard M. Miller School of Medicine, Miami, FL, USA.,3 Department of Neurology, University of Miami Leonard M. Miller School of Medicine, Miami, FL, USA.,4 Neuroscience Program, University of Miami Leonard M. Miller School of Medicine, Miami, FL, USA
| | - Holly M Stradecki-Cohan
- 1 Cerebral Vascular Disease Research Laboratories, University of Miami Leonard M. Miller School of Medicine, Miami, FL, USA.,3 Department of Neurology, University of Miami Leonard M. Miller School of Medicine, Miami, FL, USA.,4 Neuroscience Program, University of Miami Leonard M. Miller School of Medicine, Miami, FL, USA
| | - Kahlilia C Morris-Blanco
- 1 Cerebral Vascular Disease Research Laboratories, University of Miami Leonard M. Miller School of Medicine, Miami, FL, USA.,3 Department of Neurology, University of Miami Leonard M. Miller School of Medicine, Miami, FL, USA.,4 Neuroscience Program, University of Miami Leonard M. Miller School of Medicine, Miami, FL, USA
| | - Nathalie Khoury
- 1 Cerebral Vascular Disease Research Laboratories, University of Miami Leonard M. Miller School of Medicine, Miami, FL, USA.,3 Department of Neurology, University of Miami Leonard M. Miller School of Medicine, Miami, FL, USA.,4 Neuroscience Program, University of Miami Leonard M. Miller School of Medicine, Miami, FL, USA
| | - Kevin B Koronowski
- 1 Cerebral Vascular Disease Research Laboratories, University of Miami Leonard M. Miller School of Medicine, Miami, FL, USA.,3 Department of Neurology, University of Miami Leonard M. Miller School of Medicine, Miami, FL, USA.,4 Neuroscience Program, University of Miami Leonard M. Miller School of Medicine, Miami, FL, USA
| | - Mehdi Youbi
- 1 Cerebral Vascular Disease Research Laboratories, University of Miami Leonard M. Miller School of Medicine, Miami, FL, USA.,3 Department of Neurology, University of Miami Leonard M. Miller School of Medicine, Miami, FL, USA
| | - Clinton B Wright
- 2 Evelyn F. McKnight Brain Institute, University of Miami Leonard M. Miller School of Medicine, Miami, FL, USA.,3 Department of Neurology, University of Miami Leonard M. Miller School of Medicine, Miami, FL, USA.,4 Neuroscience Program, University of Miami Leonard M. Miller School of Medicine, Miami, FL, USA
| | - Miguel A Perez-Pinzon
- 1 Cerebral Vascular Disease Research Laboratories, University of Miami Leonard M. Miller School of Medicine, Miami, FL, USA.,2 Evelyn F. McKnight Brain Institute, University of Miami Leonard M. Miller School of Medicine, Miami, FL, USA.,3 Department of Neurology, University of Miami Leonard M. Miller School of Medicine, Miami, FL, USA.,4 Neuroscience Program, University of Miami Leonard M. Miller School of Medicine, Miami, FL, USA
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8
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Lu J, Zhang Y, Yang W, Guo Q, Gao L, Song Z. Transformation of the B Ring to the C Ring of Bryostatins by Csp 3-H Amination and Z to E Isomerization. Org Lett 2017; 19:5232-5235. [PMID: 28901773 DOI: 10.1021/acs.orglett.7b02510] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
An interesting approach to transform the B ring of bryostatins to the C ring has been developed. The key tactics of the approach feature an intramolecular Csp3-H bond amination to form spirocyclic hemiaminal, which undergoes ring opening to afford the C ring found in bryostatin 17. The subsequent epoxidation/oxidation sequence results in Z to E isomerization of the exo-cyclic enoate, delivering the common precursor, which could be transformed into the C ring found in bryostatins 1, 2, 4-9, 12, 14, and 15.
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Affiliation(s)
- Ji Lu
- Key Laboratory of Drug-Targeting of Education Ministry and Department of Medicinal Chemistry, West China School of Pharmacy, Sichuan University , Chengdu 610064, P. R. China
| | - Yuebao Zhang
- Key Laboratory of Drug-Targeting of Education Ministry and Department of Medicinal Chemistry, West China School of Pharmacy, Sichuan University , Chengdu 610064, P. R. China
| | - WenYu Yang
- Key Laboratory of Drug-Targeting of Education Ministry and Department of Medicinal Chemistry, West China School of Pharmacy, Sichuan University , Chengdu 610064, P. R. China
| | - Qianyou Guo
- Key Laboratory of Drug-Targeting of Education Ministry and Department of Medicinal Chemistry, West China School of Pharmacy, Sichuan University , Chengdu 610064, P. R. China
| | - Lu Gao
- Key Laboratory of Drug-Targeting of Education Ministry and Department of Medicinal Chemistry, West China School of Pharmacy, Sichuan University , Chengdu 610064, P. R. China
| | - Zhenlei Song
- Key Laboratory of Drug-Targeting of Education Ministry and Department of Medicinal Chemistry, West China School of Pharmacy, Sichuan University , Chengdu 610064, P. R. China.,State Key Laboratory of Elemento-organic Chemistry, Nankai University , Tianjin 300071, P. R. China
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9
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Wang Y, Yao Y, Nie H, He X. Implication of protein kinase C of the left intermediate medial mesopallium in memory impairments induced by early prenatal morphine exposure in one-day old chicks. Eur J Pharmacol 2016; 795:94-100. [PMID: 27940175 DOI: 10.1016/j.ejphar.2016.12.011] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2016] [Revised: 12/02/2016] [Accepted: 12/06/2016] [Indexed: 02/06/2023]
Abstract
Previously we reported that prenatal morphine exposure during embryonic days 5-8 can cause cognitive deficits of one-trial passive avoidance learning (PAL) in one-day old chicks. Because protein kinase C (PKC) has been associated with memory capacity, we investigated the effects of prenatal morphine exposure on PKC isoforms expression in the left intermediate medial mesopallium (IMM) of chick brain at a time when memory tests were performed at 30, 120 and 360min respectively following training in PAL paradigm. We found that the level of PKCα in the membrane fractions in left IMM was decreased but that in the cytosol fractions showed a increased trend in prenatally morphine-exposed chicks with impaired long-term memory (120 and 360min). Moreover, the translocation of PKC δ from cytosol to membrane in left IMM was shown in prenatal morphine group which had significantly impaired long-term memory at 360min after training. Furthermore, there were no statistical differences between the two groups regarding the expressions of PKCα and PKC δ in the membrane fraction, although their levels in the cytosol fraction of prenatal morphine group which showed impaired intermediate-term memory at 30min after training, were quite different from that of prenatal saline group. Taken together, these results indicate that PKCα and PKC δ in the left IMM are differentially involved in the impairments of long-term memory induced by prenatal morphine exposure. Neither PKCα nor PKC δ in left IMM may be associated with the disruption of intermediate-term memory of chicks prenatally exposed to morphine.
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Affiliation(s)
- Ying Wang
- School of Medical Humanities, Tianjin Medical University, Tianjin, PR China
| | - Yang Yao
- Department of Clinical Biochemistry, School of Medical Laboratory, Tianjin Medical University, Tianjin, PR China
| | - Han Nie
- College of Traditional Chinese Medicine, China Pharmaceutical University, Nanjing, PR China
| | - Xingu He
- School of Medical Humanities, Tianjin Medical University, Tianjin, PR China.
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10
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Ketcham JM, Volchkov I, Chen TY, Blumberg PM, Kedei N, Lewin NE, Krische MJ. Evaluation of Chromane-Based Bryostatin Analogues Prepared via Hydrogen-Mediated C-C Bond Formation: Potency Does Not Confer Bryostatin-like Biology. J Am Chem Soc 2016; 138:13415-13423. [PMID: 27676096 PMCID: PMC5094189 DOI: 10.1021/jacs.6b08695] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
The synthesis and biological evaluation of chromane-containing bryostatin analogues WN-2-WN-7 and the previously reported salicylate-based analogue WN-8 are described. Analogues WN-2-WN-7 are prepared through convergent assembly of the chromane-containing fragment B-I with the "binding domain" fragment A-I or its C26-des-methyl congener, fragment A-II. The synthesis of fragment B-I features enantioselective double C-H allylation of 1,3-propanediol to form the C2-symmetric diol 3 and Heck cyclization of bromo-diene 5 to form the chromane core. The synthesis of salicylate WN-8 is accomplished through the union of fragments A-III and B-II. The highest binding affinities for PKCα are observed for the C26-des-methyl analogues WN-3 (Ki = 63.9 nM) and WN-7 (Ki = 63.1 nM). All analogues, WN-2-WN-8, inhibited growth of Toledo cells, with the most potent analogue being WN-7. This response, however, does not distinguish between phorbol ester-like and bryostatin-like behavior. In contrast, while many of the analogues contain a conserved C-ring in the binding domain and other features common to analogues with bryostatin-like properties, all analogues evaluated in the U937 proliferation and cell attachment assays displayed phorbol ester-like and/or toxic behavior, including WN-8, for which "bryostatin-like PKC modulatory activities" previously was suggested solely on the basis of PKC binding. These results underscore the importance of considering downstream biological effects, as tumor suppression cannot be inferred from potent PKC binding.
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Affiliation(s)
- John M. Ketcham
- University of Texas at Austin, Department of Chemistry and Biochemistry, Austin, TX 78712, USA
| | - Ivan Volchkov
- University of Texas at Austin, Department of Chemistry and Biochemistry, Austin, TX 78712, USA
| | - Te-Yu Chen
- University of Texas at Austin, Department of Chemistry and Biochemistry, Austin, TX 78712, USA
| | - Peter M. Blumberg
- Laboratory of Cancer Biology and Genetics, NCI, National Institutes of Health, Bethesda, MD 20892-4255, USA
| | - Noemi Kedei
- Laboratory of Cancer Biology and Genetics, NCI, National Institutes of Health, Bethesda, MD 20892-4255, USA
| | - Nancy E. Lewin
- Laboratory of Cancer Biology and Genetics, NCI, National Institutes of Health, Bethesda, MD 20892-4255, USA
| | - Michael J. Krische
- University of Texas at Austin, Department of Chemistry and Biochemistry, Austin, TX 78712, USA
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11
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Abstract
This paper is the thirty-seventh consecutive installment of the annual review of research concerning the endogenous opioid system. It summarizes papers published during 2014 that studied the behavioral effects of molecular, pharmacological and genetic manipulation of opioid peptides, opioid receptors, opioid agonists and opioid antagonists. The particular topics that continue to be covered include the molecular-biochemical effects and neurochemical localization studies of endogenous opioids and their receptors related to behavior (endogenous opioids and receptors), and the roles of these opioid peptides and receptors in pain and analgesia (pain and analgesia); stress and social status (human studies); tolerance and dependence (opioid mediation of other analgesic responses); learning and memory (stress and social status); eating and drinking (stress-induced analgesia); alcohol and drugs of abuse (emotional responses in opioid-mediated behaviors); sexual activity and hormones, pregnancy, development and endocrinology (opioid involvement in stress response regulation); mental illness and mood (tolerance and dependence); seizures and neurologic disorders (learning and memory); electrical-related activity and neurophysiology (opiates and conditioned place preferences (CPP)); general activity and locomotion (eating and drinking); gastrointestinal, renal and hepatic functions (alcohol and drugs of abuse); cardiovascular responses (opiates and ethanol); respiration and thermoregulation (opiates and THC); and immunological responses (opiates and stimulants). This paper is the thirty-seventh consecutive installment of the annual review of research concerning the endogenous opioid system. It summarizes papers published during 2014 that studied the behavioral effects of molecular, pharmacological and genetic manipulation of opioid peptides, opioid receptors, opioid agonists and opioid antagonists. The particular topics that continue to be covered include the molecular-biochemical effects and neurochemical localization studies of endogenous opioids and their receptors related to behavior (endogenous opioids and receptors), and the roles of these opioid peptides and receptors in pain and analgesia (pain and analgesia); stress and social status (human studies); tolerance and dependence (opioid mediation of other analgesic responses); learning and memory (stress and social status); eating and drinking (stress-induced analgesia); alcohol and drugs of abuse (emotional responses in opioid-mediated behaviors); sexual activity and hormones, pregnancy, development and endocrinology (opioid involvement in stress response regulation); mental illness and mood (tolerance and dependence); seizures and neurologic disorders (learning and memory); electrical-related activity and neurophysiology (opiates and conditioned place preferences (CPP)); general activity and locomotion (eating and drinking); gastrointestinal, renal and hepatic functions (alcohol and drugs of abuse); cardiovascular responses (opiates and ethanol); respiration and thermoregulation (opiates and THC); and immunological responses (opiates and stimulants).
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Affiliation(s)
- Richard J Bodnar
- Department of Psychology and Neuropsychology Doctoral Sub-Program, Queens College, City University of New York, Flushing, NY 11367, United States.
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Russo P, Kisialiou A, Lamonaca P, Moroni R, Prinzi G, Fini M. New Drugs from Marine Organisms in Alzheimer's Disease. Mar Drugs 2015; 14:5. [PMID: 26712769 PMCID: PMC4728502 DOI: 10.3390/md14010005] [Citation(s) in RCA: 44] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2015] [Revised: 12/09/2015] [Accepted: 12/21/2015] [Indexed: 12/16/2022] Open
Abstract
Alzheimer’s disease (AD) is a multifactorial neurodegenerative disorder. Current approved drugs may only ameliorate symptoms in a restricted number of patients and for a restricted period of time. Currently, there is a translational research challenge into identifying the new effective drugs and their respective new therapeutic targets in AD and other neurodegenerative disorders. In this review, selected examples of marine-derived compounds in neurodegeneration, specifically in AD field are reported. The emphasis has been done on compounds and their possible relevant biological activities. The proposed drug development paradigm and current hypotheses should be accurately investigated in the future of AD therapy directions although taking into account successful examples of such approach represented by Cytarabine, Trabectedin, Eribulin and Ziconotide. We review a complexity of the translational research for such a development of new therapies for AD. Bryostatin is a prominent candidate for the therapy of AD and other types of dementia in humans.
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Affiliation(s)
- Patrizia Russo
- Clinical and Molecular Epidemiology Division, IRCCS "San RaffaelePisana" Via di Valcannuta, 247, RomeI-00166, Italy.
| | - Aliaksei Kisialiou
- Clinical and Molecular Epidemiology Division, IRCCS "San RaffaelePisana" Via di Valcannuta, 247, RomeI-00166, Italy.
| | - Palma Lamonaca
- Clinical and Molecular Epidemiology Division, IRCCS "San RaffaelePisana" Via di Valcannuta, 247, RomeI-00166, Italy.
| | - Rossana Moroni
- Clinical and Molecular Epidemiology Division, IRCCS "San RaffaelePisana" Via di Valcannuta, 247, RomeI-00166, Italy.
| | - Giulia Prinzi
- Clinical and Molecular Epidemiology Division, IRCCS "San RaffaelePisana" Via di Valcannuta, 247, RomeI-00166, Italy.
| | - Massimo Fini
- Scientific Direction, IRCCS "San RaffaelePisana" Via di Valcannuta, 247, Rome I-00166, Italy.
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Lucke-Wold BP, Logsdon AF, Smith KE, Turner RC, Alkon DL, Tan Z, Naser ZJ, Knotts CM, Huber JD, Rosen CL. Bryostatin-1 Restores Blood Brain Barrier Integrity following Blast-Induced Traumatic Brain Injury. Mol Neurobiol 2015; 52:1119-1134. [PMID: 25301233 PMCID: PMC5000781 DOI: 10.1007/s12035-014-8902-7] [Citation(s) in RCA: 53] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2014] [Accepted: 09/24/2014] [Indexed: 02/08/2023]
Abstract
Recent wars in Iraq and Afghanistan have accounted for an estimated 270,000 blast exposures among military personnel. Blast traumatic brain injury (TBI) is the 'signature injury' of modern warfare. Blood brain barrier (BBB) disruption following blast TBI can lead to long-term and diffuse neuroinflammation. In this study, we investigate for the first time the role of bryostatin-1, a specific protein kinase C (PKC) modulator, in ameliorating BBB breakdown. Thirty seven Sprague-Dawley rats were used for this study. We utilized a clinically relevant and validated blast model to expose animals to moderate blast exposure. Groups included: control, single blast exposure, and single blast exposure + bryostatin-1. Bryostatin-1 was administered i.p. 2.5 mg/kg after blast exposure. Evan's blue, immunohistochemistry, and western blot analysis were performed to assess injury. Evan's blue binds to albumin and is a marker for BBB disruption. The single blast exposure caused an increase in permeability compared to control (t = 4.808, p < 0.05), and a reduction back toward control levels when bryostatin-1 was administered (t = 5.113, p < 0.01). Three important PKC isozymes, PKCα, PKCδ, and PKCε, were co-localized primarily with endothelial cells but not astrocytes. Bryostatin-1 administration reduced toxic PKCα levels back toward control levels (t = 4.559, p < 0.01) and increased the neuroprotective isozyme PKCε (t = 6.102, p < 0.01). Bryostatin-1 caused a significant increase in the tight junction proteins VE-cadherin, ZO-1, and occludin through modulation of PKC activity. Bryostatin-1 ultimately decreased BBB breakdown potentially due to modulation of PKC isozymes. Future work will examine the role of bryostatin-1 in preventing chronic neurodegeneration following repetitive neurotrauma.
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Affiliation(s)
- Brandon P Lucke-Wold
- Department of Neurosurgery, West Virginia University School of Medicine, Morgantown, WV, 26506, USA
- The Center for Neuroscience, West Virginia University School of Medicine, Morgantown, WV, 26506, USA
| | - Aric F Logsdon
- The Center for Neuroscience, West Virginia University School of Medicine, Morgantown, WV, 26506, USA
- Department of Basic Pharmaceutical Sciences, West Virginia University School of Pharmacy, Morgantown, WV, 26506, USA
| | - Kelly E Smith
- The Center for Neuroscience, West Virginia University School of Medicine, Morgantown, WV, 26506, USA
- Department of Basic Pharmaceutical Sciences, West Virginia University School of Pharmacy, Morgantown, WV, 26506, USA
| | - Ryan C Turner
- Department of Neurosurgery, West Virginia University School of Medicine, Morgantown, WV, 26506, USA
- The Center for Neuroscience, West Virginia University School of Medicine, Morgantown, WV, 26506, USA
| | - Daniel L Alkon
- Blanchette Rockefeller Neurosciences Institute, Morgantown, WV, 26506, USA
| | - Zhenjun Tan
- Department of Neurosurgery, West Virginia University School of Medicine, Morgantown, WV, 26506, USA
- The Center for Neuroscience, West Virginia University School of Medicine, Morgantown, WV, 26506, USA
| | - Zachary J Naser
- Department of Neurosurgery, West Virginia University School of Medicine, Morgantown, WV, 26506, USA
- The Center for Neuroscience, West Virginia University School of Medicine, Morgantown, WV, 26506, USA
- Office of Professional Studies in Health Sciences, Drexel University College of Medicine, Philadelphia, PA, 19102, USA
| | - Chelsea M Knotts
- Department of Neurosurgery, West Virginia University School of Medicine, Morgantown, WV, 26506, USA
| | - Jason D Huber
- The Center for Neuroscience, West Virginia University School of Medicine, Morgantown, WV, 26506, USA
- Department of Basic Pharmaceutical Sciences, West Virginia University School of Pharmacy, Morgantown, WV, 26506, USA
| | - Charles L Rosen
- Department of Neurosurgery, West Virginia University School of Medicine, Morgantown, WV, 26506, USA.
- The Center for Neuroscience, West Virginia University School of Medicine, Morgantown, WV, 26506, USA.
- Department of Neurosurgery, West Virginia University School of Medicine, One Medical Center Drive, Suite 4300, Health Sciences Center, PO Box 9183, Morgantown, WV, 26506-9183, USA.
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Andrews IP, Ketcham JM, Blumberg PM, Kedei N, Lewin NE, Peach ML, Krische MJ. Synthesis of seco-B-ring bryostatin analogue WN-1 via C-C bond-forming hydrogenation: critical contribution of the B-ring in determining bryostatin-like and phorbol 12-myristate 13-acetate-like properties. J Am Chem Soc 2014; 136:13209-16. [PMID: 25207655 PMCID: PMC4183601 DOI: 10.1021/ja507825s] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Abstract
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The seco-B-ring
bryostatin analogue, macrodiolide WN-1, was prepared
in 17 steps (longest linear sequence) and
30 total steps with three bonds formed via hydrogen-mediated C–C
coupling. This synthetic route features a palladium-catalyzed alkoxycarbonylation
of a C2-symmetric diol to form the C9-deoxygenated
bryostatin A-ring. WN-1 binds to PKCα (Ki = 16.1 nM) and inhibits the growth of multiple
leukemia cell lines. Although structural features of the WN-1 A-ring and C-ring are shared by analogues that display bryostatin-like
behavior, WN-1 displays PMA-like behavior in U937 cell
attachment and proliferation assays, as well as in K562 and MV-4-11
proliferation assays. Molecular modeling studies suggest the pattern
of internal hydrogen bonds evident in bryostatin 1 is preserved in WN-1, and that upon docking WN-1 into the crystal
structure of the C1b domain of PKCδ, the binding mode of bryostatin
1 is reproduced. The collective data emphasize the critical contribution
of the B-ring to the function of the upper portion of the molecule
in conferring a bryostatin-like pattern of biological activity.
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Affiliation(s)
- Ian P Andrews
- Department of Chemistry and Biochemistry, University of Texas at Austin , Austin, Texas 78712, United States
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