1
|
Fukuyama Y, Kubo M, Harada K. Neurotrophic Natural Products. PROGRESS IN THE CHEMISTRY OF ORGANIC NATURAL PRODUCTS 2024; 123:1-473. [PMID: 38340248 DOI: 10.1007/978-3-031-42422-9_1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/12/2024]
Abstract
Neurotrophins (NGF, BDNF, NT3, NT4) can decrease cell death, induce differentiation, as well as sustain the structure and function of neurons, which make them promising therapeutic agents for the treatment of neurodegenerative disorders. However, neurotrophins have not been very effective in clinical trials mostly because they cannot pass through the blood-brain barrier owing to being high-molecular-weight proteins. Thus, neurotrophin-mimic small molecules, which stimulate the synthesis of endogenous neurotrophins or enhance neurotrophic actions, may serve as promising alternatives to neurotrophins. Small-molecular-weight natural products, which have been used in dietary functional foods or in traditional medicines over the course of human history, have a great potential for the development of new therapeutic agents against neurodegenerative diseases such as Alzheimer's disease. In this contribution, a variety of natural products possessing neurotrophic properties such as neurogenesis, neurite outgrowth promotion (neuritogenesis), and neuroprotection are described, and a focus is made on the chemistry and biology of several neurotrophic natural products.
Collapse
Affiliation(s)
- Yoshiyasu Fukuyama
- Faculty of Pharmaceutical Sciences, Tokushima Bunri University, Tokushima, 770-8514, Japan.
| | - Miwa Kubo
- Faculty of Pharmaceutical Sciences, Tokushima Bunri University, Tokushima, 770-8514, Japan
| | - Kenichi Harada
- Faculty of Pharmaceutical Sciences, Tokushima Bunri University, Tokushima, 770-8514, Japan
| |
Collapse
|
2
|
Mitra S, Anand U, Sanyal R, Jha NK, Behl T, Mundhra A, Ghosh A, Radha, Kumar M, Proćków J, Dey A. Neoechinulins: Molecular, cellular, and functional attributes as promising therapeutics against cancer and other human diseases. Biomed Pharmacother 2021; 145:112378. [PMID: 34741824 DOI: 10.1016/j.biopha.2021.112378] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2021] [Revised: 10/23/2021] [Accepted: 10/25/2021] [Indexed: 12/21/2022] Open
Abstract
Neoechinulins are fungal and plant-derived chemicals extracted from Microsporum sp., Eurotium rubrum, Aspergillus sp., etc. Two analogues of neoechinulin, i.e., A and B, exerted extensive pharmacological properties described in this review. Neoechinulin is an indole alkaloid and has a double bond between C8/C9, which tends to contribute to its cytoprotective nature. Neoechinulin A exhibits protection to PC12 cells against nitrosative stress via increasing NAD(P)H reserve capacity and decreasing cellular GSH levels. It also confers protection via rescuing PC12 cells from rotenone-induced stress by lowering LDH leakage. This compound has great positive potential against neurodegenerative diseases by inhibiting SIN-1 induced cell death in neuronal cells. Together with these, neoechinulin A tends to inhibit Aβ42-induced microglial activation and confers protection against neuroinflammation. Alongside, it also inhibits cervical cancer cells by caspase-dependent apoptosis and via upregulation of apoptosis inducing genes like Bax, it suppresses LPS-induced inflammation in RAW264.7 macrophages and acts as an antidepressant. Whereas, another analogue, Neoechinulin B tends to interfere with the cellular mechanism thereby, inhibiting the entry of influenza A virus and it targets Liver X receptor (LXR) and decreases the infection rate of Hepatitis C. The present review describes the pharmaceutical properties of neoechinulins with notes on their molecular, cellular, and functional basis and their therapeutic properties.
Collapse
Affiliation(s)
- Sicon Mitra
- Department of Biotechnology, School of Engineering & Technology, Sharda University, Greater Noida 201310, Uttar Pradesh, India
| | - Uttpal Anand
- Department of Life Sciences, Ben-Gurion University of the Negev, Beer-Sheva 84105, Israel
| | - Rupa Sanyal
- Department of Botany, Bhairab Ganguly College (affiliated to West Bengal State University), Feeder Road, Belghoria, Kolkata 700056, West Bengal, India
| | - Niraj Kumar Jha
- Department of Biotechnology, School of Engineering & Technology, Sharda University, Greater Noida 201310, Uttar Pradesh, India
| | - Tapan Behl
- Chitkara College of Pharmacy, Chitkara University, Punjab 140401, India
| | - Avinash Mundhra
- Department of Botany, Rishi Bankim Chandra College (Affiliated to the West Bengal State University), East Kantalpara, North 24 Parganas, Naihati 743165, West Bengal, India
| | - Arabinda Ghosh
- Department of Botany, Gauhati University, Guwahati, Assam 781014, India
| | - Radha
- School of Biological and Environmental Sciences, Shoolini University of Biotechnology and Management Sciences, Solan, Himachal Pradesh 173229, India
| | - Manoj Kumar
- Chemical and Biochemical Processing Division, ICAR - Central Institute for Research on Cotton Technology, Mumbai 400019, Maharashtra, India
| | - Jarosław Proćków
- Department of Plant Biology, Institute of Environmental Biology, Wrocław University of Environmental and Life Sciences, Kożuchowska 5b, 51-631 Wrocław, Poland.
| | - Abhijit Dey
- Department of Life Sciences, Presidency University, 86/1 College Street, Kolkata, 700073, West Bengal, India.
| |
Collapse
|
3
|
Biologically Active Echinulin-Related Indolediketopiperazines from the Marine Sediment-Derived Fungus Aspergillus niveoglaucus. Molecules 2019; 25:molecules25010061. [PMID: 31878044 PMCID: PMC6983058 DOI: 10.3390/molecules25010061] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2019] [Revised: 12/20/2019] [Accepted: 12/20/2019] [Indexed: 01/23/2023] Open
Abstract
Seven known echinulin-related indolediketopiperazine alkaloids (1–7) were isolated from the Vietnamese sediment-derived fungus Aspergillus niveoglaucus. Using chiral HPLC, the enantiomers of cryptoechinuline B (1) were isolated as individual compounds for the first time. (+)-Cryptoechinuline B (1a) exhibited neuroprotective activity in 6-OHDA-, paraquat-, and rotenone-induced in vitro models of Parkinson’s disease. (−)-Cryptoechinuline B (1b) and neoechinulin C (5) protected the neuronal cells against paraquat-induced damage in a Parkinson’s disease model. Neoechinulin B (4) exhibited cytoprotective activity in a rotenone-induced model, and neoechinulin (7) showed activity in the 6-OHDA-induced model.
Collapse
|
4
|
Kanno K, Tsurukawa Y, Kamisuki S, Shibasaki H, Iguchi K, Murakami H, Uchiyama J, Kuramochi K. Novel neuroprotective hydroquinones with a vinyl alkyne from the fungus, Pestalotiopsis microspora. J Antibiot (Tokyo) 2019; 72:793-799. [PMID: 31341274 DOI: 10.1038/s41429-019-0213-9] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2019] [Revised: 06/03/2019] [Accepted: 06/15/2019] [Indexed: 12/15/2022]
Abstract
New hydroquinone derivatives bearing a vinyl alkyne, pestalotioquinols A and B, were isolated from a fungal culture broth of Pestalotiopsis microspora. The structures of these novel compounds were determined by interpretation of spectroscopic data (1D/2D NMR, MS, and IR), and the absolute configuration of the stereogenic center of pestalotioquinol A was assigned using the modified Mosher's method. Nerve growth factor-differentiated neuronal PC12 cells were pretreated with pestalotioquinols A and B and removed from the medium, and then treated with a generator of peroxynitrite (ONOO-), a reactive nitrogen species, to induce cell death. The cytotoxicity of the treated cells was assessed by measuring lactate dehydrogenase leakage. As a result, 1-3 μM pretreatment of pestalotioquinols A and B rescued neuronal PC12 cells from peroxynitrite-induced cytotoxicity and the protective activity was sustained after removing each compound from the medium. These results demonstrate that pestalotioquinol derivatives are a new class of hydroquinones possessing a vinyl alkyne and exhibiting relatively high neuroprotective effects.
Collapse
Affiliation(s)
- Kazuki Kanno
- School of Veterinary Medicine, Azabu University, Fuchinobe, Sagamihara, Kanagawa, 252-5201, Japan
| | - Yukine Tsurukawa
- School of Veterinary Medicine, Azabu University, Fuchinobe, Sagamihara, Kanagawa, 252-5201, Japan
| | - Shinji Kamisuki
- School of Veterinary Medicine, Azabu University, Fuchinobe, Sagamihara, Kanagawa, 252-5201, Japan.
| | - Hisanobu Shibasaki
- School of Veterinary Medicine, Azabu University, Fuchinobe, Sagamihara, Kanagawa, 252-5201, Japan
| | - Keita Iguchi
- School of Veterinary Medicine, Azabu University, Fuchinobe, Sagamihara, Kanagawa, 252-5201, Japan
| | - Hironobu Murakami
- School of Veterinary Medicine, Azabu University, Fuchinobe, Sagamihara, Kanagawa, 252-5201, Japan
| | - Jumpei Uchiyama
- School of Veterinary Medicine, Azabu University, Fuchinobe, Sagamihara, Kanagawa, 252-5201, Japan
| | - Kouji Kuramochi
- Department of Applied Biological Science, Tokyo University of Science, Yamazaki, Noda, Chiba, 278-8510, Japan
| |
Collapse
|
5
|
Kamisuki S, Himeno N, Tsurukawa Y, Kusayanagi T, Takeno M, Kamakura T, Kuramochi K, Sugawara F. Identification of proteins that bind to the neuroprotective agent neoechinulin A. Biosci Biotechnol Biochem 2018; 82:442-448. [PMID: 29447077 DOI: 10.1080/09168451.2018.1433018] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
Neoechinulin A is an indole alkaloid with several biological activities. We previously reported that this compound protects neuronal PC12 cells from cytotoxicity induced by the peroxynitrite generator 3-morpholinosydnonimine (SIN-1), but the target proteins and precise mechanism of action of neoechinulin A were unclear. Here, we employed a phage display screen to identify proteins that bind directly with neoechinulin A. Our findings identified two proteins, chromogranin B and glutaredoxin 3, as candidate target binding partners for the alkaloid. QCM analyses revealed that neoechinulin A displays high affinity for both chromogranin B and glutaredoxin 3. RNA interference-mediated depletion of chromogranin B decreased the sensitivity of PC12 cells against SIN-1. Our results suggested chromogranin B is a plausible target of neoechinulin A.
Collapse
Affiliation(s)
- Shinji Kamisuki
- a School of Veterinary Medicine , Azabu University , Kanagawa , Japan
| | - Natsumi Himeno
- b Department of Applied Biological Science , Tokyo University of Science , Chiba , Japan
| | - Yukine Tsurukawa
- a School of Veterinary Medicine , Azabu University , Kanagawa , Japan
| | - Tomoe Kusayanagi
- b Department of Applied Biological Science , Tokyo University of Science , Chiba , Japan
| | - Masahiro Takeno
- b Department of Applied Biological Science , Tokyo University of Science , Chiba , Japan
| | - Takashi Kamakura
- b Department of Applied Biological Science , Tokyo University of Science , Chiba , Japan
| | - Kouji Kuramochi
- b Department of Applied Biological Science , Tokyo University of Science , Chiba , Japan
| | - Fumio Sugawara
- b Department of Applied Biological Science , Tokyo University of Science , Chiba , Japan
| |
Collapse
|
6
|
Fungus-Derived Neoechinulin B as a Novel Antagonist of Liver X Receptor, Identified by Chemical Genetics Using a Hepatitis C Virus Cell Culture System. J Virol 2016; 90:9058-74. [PMID: 27489280 DOI: 10.1128/jvi.00856-16] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2016] [Accepted: 07/20/2016] [Indexed: 12/13/2022] Open
Abstract
UNLABELLED Cell culture systems reproducing virus replication can serve as unique models for the discovery of novel bioactive molecules. Here, using a hepatitis C virus (HCV) cell culture system, we identified neoechinulin B (NeoB), a fungus-derived compound, as an inhibitor of the liver X receptor (LXR). NeoB was initially identified by chemical screening as a compound that impeded the production of infectious HCV. Genome-wide transcriptome analysis and reporter assays revealed that NeoB specifically inhibits LXR-mediated transcription. NeoB was also shown to interact directly with LXRs. Analysis of structural analogs suggested that the molecular interaction of NeoB with LXR correlated with the capacity to inactivate LXR-mediated transcription and to modulate lipid metabolism in hepatocytes. Our data strongly suggested that NeoB is a novel LXR antagonist. Analysis using NeoB as a bioprobe revealed that LXRs support HCV replication: LXR inactivation resulted in dispersion of double-membrane vesicles, putative viral replication sites. Indeed, cells treated with NeoB showed decreased replicative permissiveness for poliovirus, which also replicates in double-membrane vesicles, but not for dengue virus, which replicates via a distinct membrane compartment. Together, our data suggest that LXR-mediated transcription regulates the formation of virus-associated membrane compartments. Significantly, inhibition of LXRs by NeoB enhanced the activity of all known classes of anti-HCV agents, and NeoB showed especially strong synergy when combined with interferon or an HCV NS5A inhibitor. Thus, our chemical genetics analysis demonstrates the utility of the HCV cell culture system for identifying novel bioactive molecules and characterizing the virus-host interaction machinery. IMPORTANCE Hepatitis C virus (HCV) is highly dependent on host factors for efficient replication. In the present study, we used an HCV cell culture system to screen an uncharacterized chemical library. Our results identified neoechinulin B (NeoB) as a novel inhibitor of the liver X receptor (LXR). NeoB inhibited the induction of LXR-regulated genes and altered lipid metabolism. Intriguingly, our results indicated that LXRs are critical to the process of HCV replication: LXR inactivation by NeoB disrupted double-membrane vesicles, putative sites of viral replication. Moreover, NeoB augmented the antiviral activity of all known classes of currently approved anti-HCV agents without increasing cytotoxicity. Thus, our strategy directly links the identification of novel bioactive compounds to basic virology and the development of new antiviral agents.
Collapse
|
7
|
Zou T, Tang X, Huang Z, Xu N, Hu Z. The Pael-R gene does not mediate the changes in rotenone-induced Parkinson's disease model cells. Neural Regen Res 2014; 9:402-6. [PMID: 25206827 PMCID: PMC4146201 DOI: 10.4103/1673-5374.128245] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 01/19/2014] [Indexed: 11/04/2022] Open
Abstract
In this study, we established cell models for Parkinson's disease using rotenone. An RNA interference vector targeting Parkin-associated endothelin receptor-like receptor (Pael-R) was transfected into the model cells. The results of reverse-transcription polymerase chain reaction and western blot analysis showed that Pael-R expression was decreased after RNA interference compared with the control group (no treatment) and the model group (rotenone treatment), while the rate of apoptosis and survival of dopaminergic cells did not differ significantly between groups, as detected by flow cytometry and an MTT assay. These experimental findings indicate that the Pael-R gene has no role in the changes in rotenone-induced Parkinson's disease model cells.
Collapse
Affiliation(s)
- Ting Zou
- Department of Neurology, Second Xiangya Hospital, Central South University, Changsha, Hunan Province, China
| | - Xiangqi Tang
- Department of Neurology, Second Xiangya Hospital, Central South University, Changsha, Hunan Province, China
| | - Zhiling Huang
- Department of Neurology, Second Xiangya Hospital, Central South University, Changsha, Hunan Province, China
| | - Niangui Xu
- Department of Neurology, Second Xiangya Hospital, Central South University, Changsha, Hunan Province, China
| | - Zhiping Hu
- Department of Neurology, Second Xiangya Hospital, Central South University, Changsha, Hunan Province, China
| |
Collapse
|
8
|
Synthetic and structure-activity relationship studies on bioactive natural products. Biosci Biotechnol Biochem 2013; 77:446-54. [PMID: 23470748 DOI: 10.1271/bbb.120884] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
This review summarizes our research into the synthesis and structure-activity relationships of epolactaene, neoechinulin A, plakevulin A, pseudodeflectusin and ustusorane C. These natural products are attractive in view of their apoptosis-inducing activity, cytoprotective activity against peroxynitrite, inhibitory activity against DNA polymerases, and cytotoxicity in cancer cells.
Collapse
|