1
|
Chen J, Liu X, Yu S, Liu J, Chen R, Zhang Y, Jiang L, Dai Q. A novel ω-conotoxin Bu8 inhibiting N-type voltage-gated calcium channels displays potent analgesic activity. Acta Pharm Sin B 2021; 11:2685-2693. [PMID: 34589389 PMCID: PMC8463271 DOI: 10.1016/j.apsb.2021.03.001] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2020] [Revised: 02/13/2021] [Accepted: 03/01/2021] [Indexed: 01/11/2023] Open
Abstract
ω-Conotoxins inhibit N-type voltage-gated calcium (CaV2.2) channels and exhibit efficacy in attenuating neuropathic pain but have a low therapeutic index. Here, we synthesized and characterized a novel ω-conotoxin, Bu8 from Conus bullatus, which consists of 25 amino acid residues and three disulfide bridges. Bu8 selectively and potently inhibits depolarization-activated Ba2+ currents mediated by rat CaV2.2 expressed in HEK293T cells (IC50 = 89 nmol/L). Bu8 is two-fold more potent than ω-conotoxin MVIIA, a ω-conotoxin currently used for the treatment of severe chronic pain. It also displays potent analgesic activity in animal pain models of hot plate and acetic acid writhing but has fewer side effects on mouse motor function and lower toxicity in goldfish. Its lower side effects may be attributed to its faster binding rate and higher recovery ratios. The NMR structure demonstrates that Bu8 contains a small irregular triple β-strand. The structure-activity relationships of Bu8 Ala mutants and Bu8/MVIIA hybrid mutants demonstrate that the binding mode of CaV2.2 with the amino acid residues in loop 1 and loop 2 of Bu8 is different from that of MVIIA. This study characterizes a novel, more potent ω-conotoxin and provides new insights for designing CaV2.2 antagonists.
Collapse
Key Words
- Analgesic activity
- Bu8
- DIEA, diisopropylethylamine
- ESI-MS, electrospray ionization-mass spectroscopy
- Fmoc, N-(9-fluorenyl)methyloxy-carbonyl
- HBTU, 2-(1H-benzotriazol-1-yl)-1,1,3,3-tetramethyluronium hexafluorophosphate
- HOBt, 1-hydroxybenzotriazole
- IC50, half-maximal inhibitory concentration
- N-type calcium ion channel
- RP-HPLC, reversed phase high-performance liquid chromatography
- Structure–activity relationship
- TFA, trifluoroacetic acid
- ω-conotoxin
Collapse
Affiliation(s)
- Jinqin Chen
- Beijing Institute of Biotechnology, Beijing 100071, China
| | - Xinhong Liu
- Key Laboratory of Magnetic Resonance in Biological System, State Key Laboratory of Magnetic Resonance and Atomic and Molecular Physics, Wuhan Center for Magnetic Resonance, Innovation Academy for Precision Measurement Science and Technology, Chinese Academy of Sciences, Wuhan 430071, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Shuo Yu
- Beijing Institute of Biotechnology, Beijing 100071, China
| | - Jia Liu
- Beijing Institute of Biotechnology, Beijing 100071, China
| | - Rongfang Chen
- Beijing Institute of Biotechnology, Beijing 100071, China
| | - Yunxiao Zhang
- College of Life Science, Hunan Normal University, Changsha 410081, China
| | - Ling Jiang
- Key Laboratory of Magnetic Resonance in Biological System, State Key Laboratory of Magnetic Resonance and Atomic and Molecular Physics, Wuhan Center for Magnetic Resonance, Innovation Academy for Precision Measurement Science and Technology, Chinese Academy of Sciences, Wuhan 430071, China
- Corresponding authors. Tel: +86 10 66948897.
| | - Qiuyun Dai
- Beijing Institute of Biotechnology, Beijing 100071, China
- Corresponding authors. Tel: +86 10 66948897.
| |
Collapse
|
2
|
Kan MW, Craik DJ. Discovery of Cyclotides from Australasian Plants. Aust J Chem 2020. [DOI: 10.1071/ch19658] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
This article is part of a special issue celebrating the contributions of Professor Paul Alewood to peptide science. We begin by providing a summary of collaborative projects between the Alewood and Craik groups at The University of Queensland and highlighting the impacts of some of these studies. In particular, studies on the discovery, synthesis, structures, and bioactivities of disulfide-rich toxins from animal venoms have led to a greater understanding of the biology of ion channels and to applications of these bioactive peptides in drug design. The second part of the article focuses on plant-derived disulfide-rich cyclic peptides, known as cyclotides, and includes an analysis of the geographical distribution of Australasian plant species that contain cyclotides as well as an analysis of the diversity of cyclotide sequences found in Australasian plants. This should provide a useful resource for researchers to access native cyclotides and explore their chemistry and biology.
Collapse
|
3
|
Dong M, Wang F, Yan Z, Yu S, Wei J, Wu Q, Liu Z, Tang Y, Ding J, Dai Q. Structure-Activity Analysis of N-Type Calcium Channel Inhibitor SO-3. Biochemistry 2018; 57:6349-6355. [PMID: 30281282 DOI: 10.1021/acs.biochem.8b00803] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
As an ω-conopeptide originally discovered from Conus striatus, SO-3 contains 25 amino acid residues and three disulfide bridges. Our previous study has shown that this peptide possesses potent analgesic activity in rodent pain models (mouse and rat), and it specifically inhibits an N-type calcium ion channel (Cav2.2). In the study presented here, we investigated the key amino acid residues for their inhibitory activity against Cav2.2 expressed in HEK 293 cells and analgesic activity in mice. To improve the inhibitory activity of SO-3, we also evaluated the effects of some amino acid residues derived from the corresponding residues of ω-peptide MVIIA, CVID, or GVIA. Our data reveal that Lys6, Ile11, and Asn14 are the important functional amino acid residues for SO-3. The replacement of some amino acid residues of SO-3 in loop 1 with the corresponding residues of CVID and GVIA improved the inhibitory activity of SO-3. The binding mode of Cav2.2 with SO-3 amino acids in loop 1 and loop 2 may be somewhat different from that of MVIIA. This study expanded our knowledge of the structure-activity relationship of ω-peptides and provided a new strategy for improving the potency of Cav2.2 inhibitors.
Collapse
Affiliation(s)
- Minxing Dong
- Beijing Institute of Biotechnology , Beijing 100071 , China
| | - Fei Wang
- Beijing Institute of Biotechnology , Beijing 100071 , China
| | - Zhenzhen Yan
- Key Laboratory of Molecular Biophysics of the Ministry of Education, College of Life Science and Technology , Huazhong University of Science and Technology , Wuhan 430074 , China
| | - Shuo Yu
- Beijing Institute of Biotechnology , Beijing 100071 , China
| | - Juanjuan Wei
- Beijing Institute of Biotechnology , Beijing 100071 , China
| | - Qiaoling Wu
- Beijing Institute of Biotechnology , Beijing 100071 , China
| | - Zhuguo Liu
- Beijing Institute of Biotechnology , Beijing 100071 , China
| | - Yifei Tang
- Beijing Institute of Biotechnology , Beijing 100071 , China
| | - Jiuping Ding
- Key Laboratory of Molecular Biophysics of the Ministry of Education, College of Life Science and Technology , Huazhong University of Science and Technology , Wuhan 430074 , China
| | - Qiuyun Dai
- Beijing Institute of Biotechnology , Beijing 100071 , China
| |
Collapse
|
4
|
First isolation and antinociceptive activity of a lipid transfer protein from noni ( Morinda citrifolia ) seeds. Int J Biol Macromol 2016; 86:71-9. [DOI: 10.1016/j.ijbiomac.2016.01.029] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2015] [Revised: 01/07/2016] [Accepted: 01/08/2016] [Indexed: 01/16/2023]
|
5
|
de Souza Cândido E, e Silva Cardoso MH, Sousa DA, Viana JC, de Oliveira-Júnior NG, Miranda V, Franco OL. The use of versatile plant antimicrobial peptides in agribusiness and human health. Peptides 2014; 55:65-78. [PMID: 24548568 DOI: 10.1016/j.peptides.2014.02.003] [Citation(s) in RCA: 81] [Impact Index Per Article: 8.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/16/2014] [Revised: 02/05/2014] [Accepted: 02/07/2014] [Indexed: 12/11/2022]
Abstract
Plant immune responses involve a wide diversity of physiological reactions that are induced by the recognition of pathogens, such as hypersensitive responses, cell wall modifications, and the synthesis of antimicrobial molecules including antimicrobial peptides (AMPs). These proteinaceous molecules have been widely studied, presenting peculiar characteristics such as conserved domains and a conserved disulfide bond pattern. Currently, many AMP classes with diverse modes of action are known, having been isolated from a large number of organisms. Plant AMPs comprise an interesting source of studies nowadays, and among these there are reports of different classes, including defensins, albumins, cyclotides, snakins and several others. These peptides have been widely used in works that pursue human disease control, including nosocomial infections, as well as for agricultural purposes. In this context, this review will focus on the relevance of the structural-function relations of AMPs derived from plants and their proper use in applications for human health and agribusiness.
Collapse
Affiliation(s)
- Elizabete de Souza Cândido
- Programa de Pós-Graduação em Ciências Genômicas e Biotecnologia, Universidade Católica de Brasília, Brasília, DF, Brazil; Centro de Análises Proteômicas e Bioquímicas, Pós-Graduação em Ciências Genômicas e Biotecnologia, Universidade Católica de Brasília, Brasília, DF, Brazil
| | - Marlon Henrique e Silva Cardoso
- Centro de Análises Proteômicas e Bioquímicas, Pós-Graduação em Ciências Genômicas e Biotecnologia, Universidade Católica de Brasília, Brasília, DF, Brazil
| | - Daniel Amaro Sousa
- Centro de Análises Proteômicas e Bioquímicas, Pós-Graduação em Ciências Genômicas e Biotecnologia, Universidade Católica de Brasília, Brasília, DF, Brazil; Programa de Pós-Graduação em Patologia Molecular, Universidade de Brasília, Brasília, DF, Brazil
| | - Juliane Cançado Viana
- Centro de Análises Proteômicas e Bioquímicas, Pós-Graduação em Ciências Genômicas e Biotecnologia, Universidade Católica de Brasília, Brasília, DF, Brazil; Programa de Pós-Graduação em Patologia Molecular, Universidade de Brasília, Brasília, DF, Brazil
| | - Nelson Gomes de Oliveira-Júnior
- Centro de Análises Proteômicas e Bioquímicas, Pós-Graduação em Ciências Genômicas e Biotecnologia, Universidade Católica de Brasília, Brasília, DF, Brazil; Programa de Pós-Graduação em Biologia Animal, Universidade de Brasília, Brasília, DF, Brazil
| | - Vívian Miranda
- Programa de Pós-Graduação em Ciências Genômicas e Biotecnologia, Universidade Católica de Brasília, Brasília, DF, Brazil; Centro de Análises Proteômicas e Bioquímicas, Pós-Graduação em Ciências Genômicas e Biotecnologia, Universidade Católica de Brasília, Brasília, DF, Brazil
| | - Octávio Luiz Franco
- Programa de Pós-Graduação em Ciências Genômicas e Biotecnologia, Universidade Católica de Brasília, Brasília, DF, Brazil; Centro de Análises Proteômicas e Bioquímicas, Pós-Graduação em Ciências Genômicas e Biotecnologia, Universidade Católica de Brasília, Brasília, DF, Brazil; Programa de Pós-Graduação em Patologia Molecular, Universidade de Brasília, Brasília, DF, Brazil.
| |
Collapse
|