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Al-Saran N, Subash-Babu P, Al-Harbi LN, Alrfaei BM, Alshatwi AA. Neuroprotective Effect of Solid Lipid Nanoparticles Loaded with Lepidium sativum (L.) Seed Bioactive Components Enhance Bioavailability and Wnt/β-Catenin/Camk-II Signaling Cascade in SH-SY5Y Neuroblastoma Cells. NANOMATERIALS (BASEL, SWITZERLAND) 2024; 14:199. [PMID: 38251163 PMCID: PMC10819627 DOI: 10.3390/nano14020199] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/03/2023] [Revised: 12/24/2023] [Accepted: 12/29/2023] [Indexed: 01/23/2024]
Abstract
The primary pathological hallmark of Alzheimer's disease (AD) is the formation and accumulation of neurofibrillary tangles and plaques, which result from the aggregation of amyloid-β (Aβ) induced by oxidative stress. The effectiveness of Alzheimer's disease (AD) therapeutics significantly hinges on the drug's bioavailability and its ability to penetrate neuronal cells. The current investigation was designed as a first attempt to examine bio-fabricated Lepidium sativum (LS) seed-extract-loaded solid lipid nanoparticles (SLNps) to increase bioavailability and bioefficacy for the prevention of undifferentiated SH-SY5Y neuronal cells from oxidative stress induced by H2O2 and amyloid-β peptide (Aβ,1-42). The SLNps were fabricated using LS extract as a water phase and hyaluronic acid and chia seed fatty acids as a lipid phase, then confirmed and characterized using UV, Zeta size, and SEM methods. The biological safety of synthesized LS-SLNps has been determined using MTT assay and PI staining (nuclear damage) in hMSCs. LS-SLNp-pretreated neuronal cells were induced with oxidative stress and 2 µM of beta-amyloid (Aβ,1-42) fibrils; furthermore, the neuroprotective potential of LS-SLNps was determined through the quenching of oxidative stress, enhancing mitochondrial oxidative capacity, and immunoregulatory potential. Observations found that cells treated with both H2O2 and beta-amyloid (Aβ,1-42) fibrils showed decreased neuronal cell growth, nuclear damage, and mitochondrial membrane potential due to oxidative stress. However, SH-SY5Y cells pretreated with LS-SLNps for 24 h showed an increase in cell proliferation with uniform morphology and increased mitochondrial membrane potential compared to cells pretreated with LS alone. Gene expression analysis found that LS-SLNps increased the expression of Wnt 3a and 5a, which stimulated the canonical, β-catenin, and non-canonical Camk-II expressions of nerve cell growth factors, confirming the molecular-level reversal of neurodegenerative diseases.
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Affiliation(s)
- Nada Al-Saran
- Department of Food Science and Nutrition, College of Food and Agricultural Sciences, King Saud University, P.O. Box 2460, Riyadh 11451, Saudi Arabia (P.S.-B.)
| | - Pandurangan Subash-Babu
- Department of Food Science and Nutrition, College of Food and Agricultural Sciences, King Saud University, P.O. Box 2460, Riyadh 11451, Saudi Arabia (P.S.-B.)
| | - Laila Naif Al-Harbi
- Department of Food Science and Nutrition, College of Food and Agricultural Sciences, King Saud University, P.O. Box 2460, Riyadh 11451, Saudi Arabia (P.S.-B.)
| | - Bahauddeen M. Alrfaei
- College of Medicine, King Saud Bin Abdulaziz University for Health Sciences (KSAU-HS), Minister of National Guard-Health Affairs (MNGHA), P.O. Box 22490, Riyadh 11426, Saudi Arabia
- King Abdullah International Medical Research Center, Minister of National Guard-Health Affairs (MNGHA), P.O. Box 22490, Riyadh 11426, Saudi Arabia
| | - Ali A. Alshatwi
- Department of Food Science and Nutrition, College of Food and Agricultural Sciences, King Saud University, P.O. Box 2460, Riyadh 11451, Saudi Arabia (P.S.-B.)
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Shantharjun B, Rajeswari R, Vani D, Unnava R, Sridhar B, Reddy KR. Metal‐Free, One‐Pot Oxidative Triple Functionalization of Azaarenes with Methyl Arenes Mediated by Molecular Iodine/TBHP: Synthesis of N‐Benzylated Iodo(iso)quinolinones. ASIAN J ORG CHEM 2019. [DOI: 10.1002/ajoc.201900588] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Affiliation(s)
- Bangarigalla Shantharjun
- Catalysis and Fine Chemicals DivisionCSIR- Indian Institute of Chemical Technology Tarnaka Hyderabad- 500007 India
- Academy of Scientific and Innovative Research New Delhi- 110025 India
| | - Radhakrishnan Rajeswari
- Catalysis and Fine Chemicals DivisionCSIR- Indian Institute of Chemical Technology Tarnaka Hyderabad- 500007 India
| | - Damera Vani
- Catalysis and Fine Chemicals DivisionCSIR- Indian Institute of Chemical Technology Tarnaka Hyderabad- 500007 India
- Academy of Scientific and Innovative Research New Delhi- 110025 India
| | - Ramanjaneyulu Unnava
- Catalysis and Fine Chemicals DivisionCSIR- Indian Institute of Chemical Technology Tarnaka Hyderabad- 500007 India
| | - Balasubramanian Sridhar
- X-ray Crystallography DivisionCSIR-Indian Institute of Chemical Technology Tarnaka, Hyderabad- 500007 India
| | - Kallu Rajender Reddy
- Catalysis and Fine Chemicals DivisionCSIR- Indian Institute of Chemical Technology Tarnaka Hyderabad- 500007 India
- Academy of Scientific and Innovative Research New Delhi- 110025 India
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3
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Metal-Free Air Oxidation in a Convenient Cascade Approach for the Access to Isoquinoline-1,3,4( 2H)-triones. Molecules 2019; 24:molecules24112177. [PMID: 31185639 PMCID: PMC6600517 DOI: 10.3390/molecules24112177] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2019] [Revised: 06/06/2019] [Accepted: 06/07/2019] [Indexed: 11/24/2022] Open
Abstract
Herein we describe a very useful application of the readily available trifunctional aromatic ketone methyl-2-(2-bromoacetyl)benzoate in reactions with primary amines. An unexpected in situ air oxidation that follows a cascade process allowed the access to a series of isoquinoline-1,3,4(2H)-triones, a class of heterocyclic compounds of great interest containing an oxygen-rich heterocyclic scaffold. A modification of the original protocol, utilizing a Staudinger reaction in the presence of trimethylphosphine, was necessary for the synthesis of Caspase inhibitor trione with free NH group.
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4
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Li H, Cao L, Ren Y, Jiang Y, Xie W, Li D. GLP-1 receptor regulates cell growth through regulating IDE expression level in Aβ1-42-treated PC12 cells. Biosci Rep 2018; 38:BSR20171284. [PMID: 29263141 PMCID: PMC6043719 DOI: 10.1042/bsr20171284] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2017] [Revised: 12/12/2017] [Accepted: 12/19/2017] [Indexed: 12/25/2022] Open
Abstract
This study aimed to validate whether glucagon-like peptide-1 receptor (GLP-1R) / cyclic adenosine monophosphate (cAMP) / protein kinase (PKA) / insulin-degrading enzyme (IDE) signaling pathway was associated with neuronal apoptosis. We developed an animal model presenting both Alzheimer's disease (AD) and type 2 diabetes (T2D), by crossing APP/PS1 mice (AD model) with streptozotocin (STZ)-treated mice (a T2D model). Neuronal apoptosis was detected by TUNEL staining and the expression levels of apoptosis-related proteins were examined by Western blotting. The viability of PC12 cells was analyzed by MTT assay and apoptosis of PC12 cells was detected by flow cytometry. The mRNA expression level was detected by qRT-PCR. T2D contributes to AD progress by prompting neuronal apoptosis and increasing expression of pro-apoptotic protein. β-Amyloid peptide1-42 (Aβ1-42) was shown to exert effects on inhibiting cell viability and prompting cell apoptosis of PC12 cells. However, GLP-1R agonist geniposide (Gen) significantly reversed them, exerting a protective role on PC12 cells. And IDE antagonist bacitracin (Bac) markedly reversed the protective effects of Gen on Aβ1-42-treated PC12 cells. Besides, Gen significantly reversed the effects of Aβ1-42 treatment on IDE expression, and the inhibitor of cAMP/PKA signaling pathway markedly reversed the effects of Gen on IDE expression level in Aβ1-42-treated PC12 cells. In conclusion, GLP-1R regulates cell growth, at least partially, through regulating cAMP/PKA/IDE signaling pathway in Aβ1-42-treated PC12 cells.
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Affiliation(s)
- Huajie Li
- Department of Neurology, the First People's Hospital of Chang Zhou, Jiang Su 213003, China
| | - Liping Cao
- Department of Neurology, the First People's Hospital of Chang Zhou, Jiang Su 213003, China
| | - Yi Ren
- Department of Neurology, the First People's Hospital of Chang Zhou, Jiang Su 213003, China
| | - Ying Jiang
- Department of Neurology, the First People's Hospital of Chang Zhou, Jiang Su 213003, China
| | - Wei Xie
- Department of Neurology, the First People's Hospital of Chang Zhou, Jiang Su 213003, China
| | - Dawen Li
- Department of Neurology, the First People's Hospital of Chang Zhou, Jiang Su 213003, China
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5
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Zhu D, Luo WK, Yang L, Ma DY. Iodine-catalyzed oxidative multiple C–H bond functionalization of isoquinolines with methylarenes: an efficient synthesis of isoquinoline-1,3,4(2H)-triones. Org Biomol Chem 2017; 15:7112-7116. [DOI: 10.1039/c7ob01539a] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Abstract
An iodine-catalyzed multiple C–H bond functionalization of isoquinolines with methylarenes via a successive benzylic sp3 C–H iodination/N-benzylation/amidation/double sp2 C–H oxidation sequence to yield isoquinoline-1,3,4(2H)-triones is developed for the first time.
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Affiliation(s)
- Di Zhu
- Key Laboratory for Environmentally Friendly Chemistry and Application of the Ministry of Education
- College of Chemistry
- Xiangtan University
- Hunan
- PR China
| | - Wen-Kun Luo
- Key Laboratory for Environmentally Friendly Chemistry and Application of the Ministry of Education
- College of Chemistry
- Xiangtan University
- Hunan
- PR China
| | - Luo Yang
- Key Laboratory for Environmentally Friendly Chemistry and Application of the Ministry of Education
- College of Chemistry
- Xiangtan University
- Hunan
- PR China
| | - Da-You Ma
- Xiangya School of Pharmaceutical Sciences
- Central South University
- Hunan
- PR China
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6
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Kobayashi K, Honda Y, Kuroda M. A Convenient Synthesis of 1-Alkoxy-2-alkyl-1,2-dihydroisoquinoline-3,4-diones Utilizing the Reaction of 2-(Dialkoxymethyl)phenyllithiums with Dimethyl Oxalate. Helv Chim Acta 2016. [DOI: 10.1002/hlca.201500254] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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7
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Srivastava A, Yadav A, Samanta S. Biopolymeric alginic acid: an efficient recyclable green catalyst for the Friedel–Crafts reaction of indoles with isoquinoline-1,3,4-triones in water. Tetrahedron Lett 2015. [DOI: 10.1016/j.tetlet.2015.09.041] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
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8
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Fang X, Zhan Y, Yang J, Yu D. A concentration-dependent effect of methanol on Candida antarctica lipase B in aqueous phase. ACTA ACUST UNITED AC 2014. [DOI: 10.1016/j.molcatb.2014.03.002] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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9
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Chen GD, Bao YR, Huang YF, Hu D, Li XX, Guo LD, Li J, Yao XS, Gao H. Three pairs of variecolortide enantiomers from Eurotium sp. with caspase-3 inhibitory activity. Fitoterapia 2013; 92:252-9. [PMID: 24321580 DOI: 10.1016/j.fitote.2013.11.012] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2013] [Revised: 11/24/2013] [Accepted: 11/30/2013] [Indexed: 11/19/2022]
Abstract
7-O-methylvariecolortide A (1), variecolortide B (2), and variecolortide C (3), the rare variecolortides existing in racemic manner, were isolated from an endolichenic fungal strain Eurotium sp. (No. 17-11-8-1). With the chiral HPLC technology, (-)-(S)-7-O-methylvariecolortide A (1a), (+)-(R)-7-O-methylvariecolortide A (1b), (-)-(S)-variecolortide B (2a), (+)-(R)-variecolortide B (2b), (-)-(S)-variecolortide C (3a), and (+)-(R)-variecolortide C (3b) were successfully separated and obtained. Their absolute configurations were firstly assigned by ECD experiment and ECD calculation. According to the relation of isolated compounds, a plausible biosynthetic pathway for variecolortides was proposed. In caspase-3 enzymatic assay, compounds 1-3 showed inhibitory activity, with IC50 values of 1.7, 0.8 and 15.7 μM, respectively.
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Affiliation(s)
- Guo-Dong Chen
- Institute of Traditional Chinese Medicine and Natural Products, College of Pharmacy, Jinan University, Guangzhou 510632, PR China; Department of Pharmaceutical Engineering, South China Agricultural University, Guangzhou 510642, PR China
| | - Yan-Ru Bao
- Institute of Traditional Chinese Medicine and Natural Products, College of Pharmacy, Jinan University, Guangzhou 510632, PR China
| | - Yuan-Fan Huang
- Institute of Traditional Chinese Medicine and Natural Products, College of Pharmacy, Jinan University, Guangzhou 510632, PR China
| | - Dan Hu
- Institute of Traditional Chinese Medicine and Natural Products, College of Pharmacy, Jinan University, Guangzhou 510632, PR China
| | - Xiao-Xia Li
- Institute of Traditional Chinese Medicine and Natural Products, College of Pharmacy, Jinan University, Guangzhou 510632, PR China
| | - Liang-Dong Guo
- State Key Laboratory of Mycology, Institute of Microbiology, Chinese Academy of Sciences, Beijing 100190, PR China
| | - Jia Li
- National Center for Drug Screening, and State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Shanghai 201203, PR China
| | - Xin-Sheng Yao
- Institute of Traditional Chinese Medicine and Natural Products, College of Pharmacy, Jinan University, Guangzhou 510632, PR China.
| | - Hao Gao
- Institute of Traditional Chinese Medicine and Natural Products, College of Pharmacy, Jinan University, Guangzhou 510632, PR China.
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10
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Fun HK, Quah CK, Huang C, Yu H. (1S*,4'S*,5R*)-1-Isobutyl-5-meth-oxy-2',3-dimethyl-4,6-dioxa-2-aza-spiro-[bicyclo-[3.2.0]hept-2-ene-7,4'-isoquinoline]-1',3'(2'H,4'H)-dione. Acta Crystallogr Sect E Struct Rep Online 2011; 67:o1273-4. [PMID: 21754557 PMCID: PMC3089195 DOI: 10.1107/s1600536811015327] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2011] [Accepted: 04/22/2011] [Indexed: 11/24/2022]
Abstract
In the isoquinoline ring system of the title compound, C19H22N2O5, the N-heterocyclic ring is in a half-chair conformation. The dioxa-2-azaspiro ring is essentially planar [maximum deviation of 0.025 (1) Å] and forms a dihedral angle of 23.51 (5)° with the benzene ring. In the crystal, molecules are linked via weak intermolecular C—H⋯O and C—H⋯N hydrogen bonds into chains along [010].
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11
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Fun HK, Quah CK, Huang C, Yu H. (1S*,4'S*,5R*)-1-Isopropyl-5-meth-oxy-2',3-dimethyl-4,6-dioxa-2-aza-spiro-[bicyclo-[3.2.0]hept-2-ene-7,4'-isoquinoline]-1',3'(2'H,4'H)-dione. Acta Crystallogr Sect E Struct Rep Online 2011; 67:o1271-2. [PMID: 21754556 PMCID: PMC3089152 DOI: 10.1107/s1600536811015315] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2011] [Accepted: 04/22/2011] [Indexed: 11/10/2022]
Abstract
In the isoquinoline ring system of the title molecule, C18H20N2O5, the N-heterocyclic ring is in a half-boat conformation. The dioxa-2-azaspiro ring is essentially planar, with a maximum deviation of 0.029 (1) Å, and makes a dihedral angle of 30.63 (5)° with the benzene ring. The molecular structure is stabilized by a weak intramolecular C—H⋯O hydrogen bond, which generates a S(6) ring motif. In the crystal, molecules are linked via weak intermolecular C—H⋯O hydrogen bonds into a three-dimensional supramolecular network. Additional stabilization is provided by π–π stacking interactions between symmetry-related benzene rings with a centroid–centroid distance of 3.6507 (5) Å.
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12
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Chen G, Gao H, Tang J, Huang Y, Chen Y, Wang Y, Zhao H, Lin H, Xie Q, Hong K, Li J, Yao X. Benzamides and Quinazolines from a Mangrove Actinomycetes Streptomyces sp. (No. 061316) and Their Inhibiting Caspase-3 Catalytic Activity in Vitro. Chem Pharm Bull (Tokyo) 2011; 59:447-51. [DOI: 10.1248/cpb.59.447] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Affiliation(s)
- Guodong Chen
- Institute of Traditional Chinese Medicine and Natural Products, Jinan University College of Pharmacy/Guangdong Province Key Laboratory of Pharmacodynamic Constituents of TCM and New Drugs Research, Jinan University
| | - Hao Gao
- Institute of Traditional Chinese Medicine and Natural Products, Jinan University College of Pharmacy/Guangdong Province Key Laboratory of Pharmacodynamic Constituents of TCM and New Drugs Research, Jinan University
- National Center for Drug Screening/State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica
| | - Jinshan Tang
- Institute of Traditional Chinese Medicine and Natural Products, Jinan University College of Pharmacy/Guangdong Province Key Laboratory of Pharmacodynamic Constituents of TCM and New Drugs Research, Jinan University
| | - Yuanfan Huang
- Institute of Traditional Chinese Medicine and Natural Products, Jinan University College of Pharmacy/Guangdong Province Key Laboratory of Pharmacodynamic Constituents of TCM and New Drugs Research, Jinan University
| | - Ying Chen
- Institute of Traditional Chinese Medicine and Natural Products, Jinan University College of Pharmacy/Guangdong Province Key Laboratory of Pharmacodynamic Constituents of TCM and New Drugs Research, Jinan University
| | - Ying Wang
- Institute of Traditional Chinese Medicine and Natural Products, Jinan University College of Pharmacy/Guangdong Province Key Laboratory of Pharmacodynamic Constituents of TCM and New Drugs Research, Jinan University
| | - Huinan Zhao
- Institute of Traditional Chinese Medicine and Natural Products, Jinan University College of Pharmacy/Guangdong Province Key Laboratory of Pharmacodynamic Constituents of TCM and New Drugs Research, Jinan University
| | - Haipeng Lin
- Institute of Tropical Biosciences and Biotechnology, Chinese Academy of Tropical Agriculture Sciences
| | - Qingyi Xie
- Institute of Tropical Biosciences and Biotechnology, Chinese Academy of Tropical Agriculture Sciences
| | - Kui Hong
- Institute of Tropical Biosciences and Biotechnology, Chinese Academy of Tropical Agriculture Sciences
| | - Jia Li
- National Center for Drug Screening/State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica
| | - Xinsheng Yao
- Institute of Traditional Chinese Medicine and Natural Products, Jinan University College of Pharmacy/Guangdong Province Key Laboratory of Pharmacodynamic Constituents of TCM and New Drugs Research, Jinan University
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13
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Yu H, Li J, Kou Z, Du X, Wei Y, Fun HK, Xu J, Zhang Y. Photoinduced Tandem Reactions of Isoquinoline-1,3,4-trione with Alkynes To Build Aza-polycycles. J Org Chem 2010; 75:2989-3001. [PMID: 20353178 DOI: 10.1021/jo100218w] [Citation(s) in RCA: 37] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Haitao Yu
- School of Chemistry and Chemical Engineering, Key Lab of Analytical Chemistry for Life Science, Ministry of Education of China, Nanjing University, Nanjing, 210093, P. R. China
| | - Jinbo Li
- School of Chemistry and Chemical Engineering, Key Lab of Analytical Chemistry for Life Science, Ministry of Education of China, Nanjing University, Nanjing, 210093, P. R. China
| | - Zhuangfei Kou
- School of Chemistry and Chemical Engineering, Key Lab of Analytical Chemistry for Life Science, Ministry of Education of China, Nanjing University, Nanjing, 210093, P. R. China
| | - Xuewen Du
- School of Chemistry and Chemical Engineering, Key Lab of Analytical Chemistry for Life Science, Ministry of Education of China, Nanjing University, Nanjing, 210093, P. R. China
| | - Yi Wei
- School of Chemistry and Chemical Engineering, Key Lab of Analytical Chemistry for Life Science, Ministry of Education of China, Nanjing University, Nanjing, 210093, P. R. China
| | - Hoong-Kun Fun
- X-ray Crystallography Unit, School of Physics, Universiti Sains Malaysia, 11800 USM Penang, Malaysia
| | - Jianhua Xu
- School of Chemistry and Chemical Engineering, Key Lab of Analytical Chemistry for Life Science, Ministry of Education of China, Nanjing University, Nanjing, 210093, P. R. China
| | - Yan Zhang
- School of Chemistry and Chemical Engineering, Key Lab of Analytical Chemistry for Life Science, Ministry of Education of China, Nanjing University, Nanjing, 210093, P. R. China
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Kim HS, Lim JY, Sul D, Hwang BY, Won TJ, Hwang KW, Park SY. Neuroprotective effects of the new diterpene, CBNU06 against beta-amyloid-induced toxicity through the inhibition of NF-kappaB signaling pathway in PC12 cells. Eur J Pharmacol 2009; 622:25-31. [DOI: 10.1016/j.ejphar.2009.09.007] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2009] [Revised: 09/09/2009] [Accepted: 09/10/2009] [Indexed: 12/17/2022]
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15
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Hong K, Gao AH, Xie QY, Gao H, Zhuang L, Lin HP, Yu HP, Li J, Yao XS, Goodfellow M, Ruan JS. Actinomycetes for marine drug discovery isolated from mangrove soils and plants in China. Mar Drugs 2009; 7:24-44. [PMID: 19370169 PMCID: PMC2666887 DOI: 10.3390/md7010024] [Citation(s) in RCA: 233] [Impact Index Per Article: 15.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2008] [Revised: 01/20/2009] [Accepted: 01/21/2009] [Indexed: 02/05/2023] Open
Abstract
The mangrove ecosystem is a largely unexplored source for actinomycetes with the potential to produce biologically active secondary metabolites. Consequently, we set out to isolate, characterize and screen actinomycetes from soil and plant material collected from eight mangrove sites in China. Over 2,000 actinomycetes were isolated and of these approximately 20%, 5%, and 10% inhibited the growth of Human Colon Tumor 116 cells, Candida albicans and Staphylococcus aureus, respectively, while 3% inhibited protein tyrosine phosphatase 1B (PTP1B), a protein related to diabetes. In addition, nine isolates inhibited aurora kinase A, an anti-cancer related protein, and three inhibited caspase 3, a protein related to neurodegenerative diseases. Representative bioactive isolates were characterized using genotypic and phenotypic procedures and classified to thirteen genera, notably to the genera Micromonospora and Streptomyces. Actinomycetes showing cytotoxic activity were assigned to seven genera whereas only Micromonospora and Streptomyces strains showed anti-PTP1B activity. We conclude that actinomycetes isolated from mangrove habitats are a potentially rich source for the discovery of anti-infection and anti-tumor compounds, and of agents for treating neurodegenerative diseases and diabetes.
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Affiliation(s)
- Kui Hong
- Author to whom correspondence should be addressed; E-mail:
| | - An-Hui Gao
- National Center for Drug Screening, Shanghai Institute of Materia Medica, Shanghai 201203, China E-mails:
;
;
| | - Qing-Yi Xie
- Institute of Tropical Bioscience and Biotechnology, Chinese Academy of Tropical Agriculture Sciences, Haikou 571101, P.R.China;;
;
| | - Hao Gao
- Institute of Traditional Chinese Medicine & Natural Products, College of Pharmacy, Jinan University, Guangzhou 510632, P.R. China; E-mail:
,
| | - Ling Zhuang
- Institute of Tropical Bioscience and Biotechnology, Chinese Academy of Tropical Agriculture Sciences, Haikou 571101, P.R.China;;
;
| | - Hai-Peng Lin
- Institute of Tropical Bioscience and Biotechnology, Chinese Academy of Tropical Agriculture Sciences, Haikou 571101, P.R.China;;
;
| | - Hai-Ping Yu
- National Center for Drug Screening, Shanghai Institute of Materia Medica, Shanghai 201203, China E-mails:
;
;
| | - Jia Li
- National Center for Drug Screening, Shanghai Institute of Materia Medica, Shanghai 201203, China E-mails:
;
;
| | - Xin-Sheng Yao
- Institute of Traditional Chinese Medicine & Natural Products, College of Pharmacy, Jinan University, Guangzhou 510632, P.R. China; E-mail:
,
| | | | - Ji-Sheng Ruan
- Institute of Tropical Bioscience and Biotechnology, Chinese Academy of Tropical Agriculture Sciences, Haikou 571101, P.R.China;;
;
- Institute of Microbiology, Chinese Academy of Sciences, Beijing, 100081, P.R. China; E-mail:
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16
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Zang Y, Yu LF, Nan FJ, Feng LY, Li J. AMP-activated protein kinase is involved in neural stem cell growth suppression and cell cycle arrest by 5-aminoimidazole-4-carboxamide-1-beta-D-ribofuranoside and glucose deprivation by down-regulating phospho-retinoblastoma protein and cyclin D. J Biol Chem 2009; 284:6175-84. [PMID: 19144636 DOI: 10.1074/jbc.m806887200] [Citation(s) in RCA: 39] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023] Open
Abstract
The fate of neural stem cells (NSCs), including their proliferation, differentiation, survival, and death, is regulated by multiple intrinsic signals and the extrinsic environment. We had previously reported that 5-aminoimidazole-4-carboxamide-1-beta-D-ribofuranoside (AICAR) directly induces astroglial differentiation of NSCs by activation of the Janus kinase (JAK)/Signal transducer and activator of transcription 3 (STAT3) pathway independently of AMP-activated protein kinase (AMPK). Here, we reported the observation that AICAR inhibited NSC proliferation and its underlying mechanism. Analysis of caspase activity and cell cycle showed that AICAR induced G1/G0 cell cycle arrest in NSCs, associated with decreased levels of poly(ADP-ribose) polymerase, phospho-retinoblastoma protein (Rb), and cyclin D but did not cause apoptosis. Iodotubericidin and Compound C, inhibitors of adenosine kinase and AMPK, respectively, or overexpression of a dominant-negative mutant of AMPK, but not JAK inhibitor, were able to reverse the anti-proliferative effect of AICAR. Glucose deprivation also activated the AMPK pathway, induced G0/G1 arrest, and suppressed the proliferation of NSCs, an effect associated with decreased levels of phospho-Rb and cyclin D protein. Furthermore, Compound C and overexpression of dominant-negative AMPK in C17.2 NSCs could block the glucose deprivation-mediated down-regulation of cyclin D and partially reverse the suppression of proliferation. These results suggest that AICAR and glucose deprivation might induce G1/G0 cell cycle arrest and suppress proliferation of NSCs via phospho-Rb and cyclin D down-regulation. AMPK, but not JAK/STAT3, activation is key for this inhibitory effect and may play an important role in the responses of NSCs to metabolic stresses such as glucose deprivation.
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Affiliation(s)
- Yi Zang
- National Center for Drug Screening and Neurological Pharmacology Department, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai 201203, China
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Du JQ, Wu J, Zhang HJ, Zhang YH, Qiu BY, Wu F, Chen YH, Li JY, Nan FJ, Ding JP, Li J. Isoquinoline-1,3,4-trione derivatives inactivate caspase-3 by generation of reactive oxygen species. J Biol Chem 2008; 283:30205-15. [PMID: 18768468 DOI: 10.1074/jbc.m803347200] [Citation(s) in RCA: 41] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
Abstract
Caspase-3 is an attractive therapeutic target for treatment of diseases involving disregulated apoptosis. We report here the mechanism of caspase-3 inactivation by isoquinoline-1,3,4-trione derivatives. Kinetic analysis indicates the compounds can irreversibly inactivate caspase-3 in a 1,4-dithiothreitol (DTT)- and oxygen-dependent manner, implying that a redox cycle might take place in the inactivation process. Reactive oxygen species detection experiments using a chemical indicator, together with electron spin resonance measurement, suggest that ROS can be generated by reaction of isoquinoline-1,3,4-trione derivatives with DTT. Oxygen-free radical scavenger catalase and superoxide dismutase eliciting the inactivation of caspase-3 by the inhibitors confirm that ROS mediates the inactivation process. Crystal structures of caspase-3 in complexes with isoquinoline-1,3,4-trione derivatives show that the catalytic cysteine is oxidized to sulfonic acid (-SO(3)H) and isoquinoline-1,3,4-trione derivatives are bound at the dimer interface of caspase-3. Further mutagenesis study shows that the binding of the inhibitors with caspase-3 appears to be nonspecific. Isoquinoline-1,3,4-trione derivative-catalyzed caspase-3 inactivation could also be observed when DTT is substituted with dihydrolipoic acid, which exists widely in cells and might play an important role in the in vivo inactivation process in which the inhibitors inactivate caspase-3 in cells and then prevent the cells from apoptosis. These results provide valuable information for further development of small molecular inhibitors against caspase-3 or other oxidation-sensitive proteins.
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Affiliation(s)
- Jun-Qing Du
- Chinese National Center for Drug Screening, Shanghai Institute of Materia Medica, Shanghai Institutes for Biological Sciences, Chinese Academy of Sciences, 189 Guo Shou Jing Road, Zhangjiang Hi-Tech Park, Shanghai 201203, People's Republic of China
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