1
|
Yin X, Guo S, Gao J, Luo L, Liao X, Li M, Su H, Huang Z, Xu J, Pei J, Chen S. Kinetic analysis of effects of temperature and time on the regulation of venom expression in Bungarus multicinctus. Sci Rep 2020; 10:14142. [PMID: 32839510 PMCID: PMC7445180 DOI: 10.1038/s41598-020-70565-2] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2020] [Accepted: 07/20/2020] [Indexed: 01/25/2023] Open
Abstract
Venom gland is a highly efficient venom production system to maintain their predatory arsenal. Venom toxins mRNA has been shown to increase abruptly in snake after venom expenditure, while the dynamics of venom accumulation during synthesis are poorly understood. Here, PacBio long-read sequencing, Illumina RNA sequencing (RNA-seq), and label-free proteome quantification were used to investigate the composition landscape and time- and temperature-dependent dynamics changes of the Bungarus multicinctus venom gland system. Transcriptome data (19.5223 Gb) from six adult B. multicinctus tissues were sequenced using PacBio RS II to generate a reference assembly, and average 7.28 Gb of clean RNA-seq data was obtained from venom glands by Illumina sequencing. Differentially expressed genes (DEGs) mainly were protein processing rather than venom toxins. Post-translational modifications provided the evidence of the significantly different proportions of toxins in the venom proteome with the changing of replenishment time and temperature, but constant of venom toxins mRNA in the venom gland transcriptome. Dynamic of toxins and genes involved in venom gland contraction suggesting the formation of the mature venom gland system would take at least 9 days. In addition, 59 toxin processing genes were identified, peptidylprolyl isomerase B of which underwent positive selection in Toxicofera. These results provide a reference for determining the extraction time of venom, production of polyclonal and monoclonal antibody for precise treatment plans of venomous snakebites, and construction of an in vitro synthesis system for snake venom protein.
Collapse
Affiliation(s)
- Xianmei Yin
- Key Laboratory of Distinctive Chinese Medicine Resources in Southwest China, Pharmacy College, Chengdu University of Traditional Chinese Medicine, Chengdu, 611137, People's Republic of China
| | - Shuai Guo
- Key Laboratory of Distinctive Chinese Medicine Resources in Southwest China, Pharmacy College, Chengdu University of Traditional Chinese Medicine, Chengdu, 611137, People's Republic of China
| | - Jihai Gao
- Key Laboratory of Distinctive Chinese Medicine Resources in Southwest China, Pharmacy College, Chengdu University of Traditional Chinese Medicine, Chengdu, 611137, People's Republic of China
| | - Lu Luo
- Key Laboratory of Beijing for Identification and Safety Evaluation of Chinese Medicine, Institution of Chinese Materia Medica, China Academy of Chinese Medical Sciences, Beijing, 100700, China
| | - Xuejiao Liao
- Key Laboratory of Distinctive Chinese Medicine Resources in Southwest China, Pharmacy College, Chengdu University of Traditional Chinese Medicine, Chengdu, 611137, People's Republic of China
| | - Mingqian Li
- Cancer Institute of Integrated Traditional Chinese and Western Medicine, Zhejiang Academy of Traditional Chinese Medicine, Tongde Hospital of Zhejiang Province, Hangzhou, 310012, Zhejiang, China
| | - He Su
- The Second Clinical College, Guangzhou University of Chinese Medicine, Guangzhou, 510006, China
| | - Zhihai Huang
- The Second Clinical College, Guangzhou University of Chinese Medicine, Guangzhou, 510006, China
| | - Jiang Xu
- Key Laboratory of Beijing for Identification and Safety Evaluation of Chinese Medicine, Institution of Chinese Materia Medica, China Academy of Chinese Medical Sciences, Beijing, 100700, China.
| | - Jin Pei
- Key Laboratory of Distinctive Chinese Medicine Resources in Southwest China, Pharmacy College, Chengdu University of Traditional Chinese Medicine, Chengdu, 611137, People's Republic of China.
| | - Shilin Chen
- Key Laboratory of Beijing for Identification and Safety Evaluation of Chinese Medicine, Institution of Chinese Materia Medica, China Academy of Chinese Medical Sciences, Beijing, 100700, China.
| |
Collapse
|
2
|
Nguyen TTN, Ha TT, Nguyen TH, Vu TH, Truong NH, Chu HH, Van Quyen D. Peptide Fraction pOh2 Exerts Antiadipogenic Activity through Inhibition of C/EBP- α and PPAR- γ Expression in 3T3-L1 Adipocytes. BIOMED RESEARCH INTERNATIONAL 2017; 2017:4826595. [PMID: 28424783 PMCID: PMC5382294 DOI: 10.1155/2017/4826595] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/22/2016] [Revised: 02/15/2017] [Accepted: 03/15/2017] [Indexed: 01/14/2023]
Abstract
Many studies have comprehensively examined the venom of Ophiophagus hannah snake. Its venom comprises different compounds exhibiting a wide range of pharmacological activities. In this investigation, four peptide fractions (PFs), ranging from 3 kDa to 10 kDa, isolated from the Vietnamese snake venom of O. hannah were separated by HPLC and investigated for their inhibitory activity on adipogenesis in 3T3-L1 adipocytes. The most effective PF was then further purified, generating two peptides, pOh1 and pOh2. Upon investigation of these two peptides on 3T3-L1 adipocytes, it was revealed that, at 10 μg/mL, pOh2 was able to inhibit the lipid accumulation in 3T3-L1 adipocytes by up to 56%, without affecting cell viability. Furthermore, the pOh2 downregulated the gene expression of important transcription factors C/EBP-α and PPAR-γ. In addition, aP2 and GPDH adipocyte-specific markers were also significantly reduced compared to untreated differentiated cells. Taken together, pOh2 inhibited the expression of key transcription factors C/EBP-α and PPAR-γ and their target genes, aP2 and GPDH, thereby blocking the adipocyte differentiation. In conclusion, this novel class of peptide might have potential for in vivo antiobesity effects.
Collapse
Affiliation(s)
- Thi Tuyet Nhung Nguyen
- Institute of Biotechnology (IBT), Vietnam Academy of Science and Technology (VAST), 18 Hoang Quoc Viet Street, Cau Giay District, Hanoi 100000, Vietnam
| | - Thi Thu Ha
- Institute of Biotechnology (IBT), Vietnam Academy of Science and Technology (VAST), 18 Hoang Quoc Viet Street, Cau Giay District, Hanoi 100000, Vietnam
| | - Thi Hoa Nguyen
- Institute of Biotechnology (IBT), Vietnam Academy of Science and Technology (VAST), 18 Hoang Quoc Viet Street, Cau Giay District, Hanoi 100000, Vietnam
| | - Thi Hien Vu
- Institute of Biotechnology (IBT), Vietnam Academy of Science and Technology (VAST), 18 Hoang Quoc Viet Street, Cau Giay District, Hanoi 100000, Vietnam
| | - Nam Hai Truong
- Institute of Biotechnology (IBT), Vietnam Academy of Science and Technology (VAST), 18 Hoang Quoc Viet Street, Cau Giay District, Hanoi 100000, Vietnam
| | - Hoang Ha Chu
- Institute of Biotechnology (IBT), Vietnam Academy of Science and Technology (VAST), 18 Hoang Quoc Viet Street, Cau Giay District, Hanoi 100000, Vietnam
| | - Dong Van Quyen
- Institute of Biotechnology (IBT), Vietnam Academy of Science and Technology (VAST), 18 Hoang Quoc Viet Street, Cau Giay District, Hanoi 100000, Vietnam
| |
Collapse
|
3
|
Melani RD, Skinner OS, Fornelli L, Domont GB, Compton PD, Kelleher NL. Mapping Proteoforms and Protein Complexes From King Cobra Venom Using Both Denaturing and Native Top-down Proteomics. Mol Cell Proteomics 2016; 15:2423-34. [PMID: 27178327 DOI: 10.1074/mcp.m115.056523] [Citation(s) in RCA: 60] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2015] [Indexed: 11/06/2022] Open
Abstract
Characterizing whole proteins by top-down proteomics avoids a step of inference encountered in the dominant bottom-up methodology when peptides are assembled computationally into proteins for identification. The direct interrogation of whole proteins and protein complexes from the venom of Ophiophagus hannah (king cobra) provides a sharply clarified view of toxin sequence variation, transit peptide cleavage sites and post-translational modifications (PTMs) likely critical for venom lethality. A tube-gel format for electrophoresis (called GELFrEE) and solution isoelectric focusing were used for protein fractionation prior to LC-MS/MS analysis resulting in 131 protein identifications (18 more than bottom-up) and a total of 184 proteoforms characterized from 14 protein toxin families. Operating both GELFrEE and mass spectrometry to preserve non-covalent interactions generated detailed information about two of the largest venom glycoprotein complexes: the homodimeric l-amino acid oxidase (∼130 kDa) and the multichain toxin cobra venom factor (∼147 kDa). The l-amino acid oxidase complex exhibited two clusters of multiproteoform complexes corresponding to the presence of 5 or 6 N-glycans moieties, each consistent with a distribution of N-acetyl hexosamines. Employing top-down proteomics in both native and denaturing modes provides unprecedented characterization of venom proteoforms and their complexes. A precise molecular inventory of venom proteins will propel the study of snake toxin variation and the targeted development of new antivenoms or other biotherapeutics.
Collapse
Affiliation(s)
- Rafael D Melani
- From the ‡Proteomics Unit, Rio de Janeiro Proteomics Network, Departamento de Bioquímica. Universidade Federal do Rio de Janeiro, Rio de Janeiro, RJ, 21941-909, Brazil; §Departments of Chemistry and Molecular Biosciences, the Chemistry of Life Processes Institute, and the Proteomics Center of Excellence, Northwestern University, Evanston, Illinois, 60208
| | - Owen S Skinner
- §Departments of Chemistry and Molecular Biosciences, the Chemistry of Life Processes Institute, and the Proteomics Center of Excellence, Northwestern University, Evanston, Illinois, 60208
| | - Luca Fornelli
- §Departments of Chemistry and Molecular Biosciences, the Chemistry of Life Processes Institute, and the Proteomics Center of Excellence, Northwestern University, Evanston, Illinois, 60208
| | - Gilberto B Domont
- From the ‡Proteomics Unit, Rio de Janeiro Proteomics Network, Departamento de Bioquímica. Universidade Federal do Rio de Janeiro, Rio de Janeiro, RJ, 21941-909, Brazil;
| | - Philip D Compton
- §Departments of Chemistry and Molecular Biosciences, the Chemistry of Life Processes Institute, and the Proteomics Center of Excellence, Northwestern University, Evanston, Illinois, 60208
| | - Neil L Kelleher
- §Departments of Chemistry and Molecular Biosciences, the Chemistry of Life Processes Institute, and the Proteomics Center of Excellence, Northwestern University, Evanston, Illinois, 60208
| |
Collapse
|
4
|
Rusmili MRA, Yee TT, Mustafa MR, Hodgson WC, Othman I. Proteomic characterization and comparison of Malaysian Bungarus candidus and Bungarus fasciatus venoms. J Proteomics 2014; 110:129-44. [PMID: 25154052 DOI: 10.1016/j.jprot.2014.08.001] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2014] [Revised: 08/05/2014] [Accepted: 08/06/2014] [Indexed: 01/25/2023]
Abstract
UNLABELLED Kraits (Bungarus spp.) are highly venomous elapids that are only found in Asia. In the current study, 103 and 86 different proteins were identified from Bungarus candidus and Bungarus fasciatus venoms, respectively. These proteins were classified into 18 different venom protein families. Both venoms were found to contain a high percentage of three finger toxins, phospholipase A2 enzymes and Kunitz-type inhibitors. Smaller number of high molecular weight enzymes such as L-amino acid oxidase, hyaluronidases, and acetylcholinesterase were also detected in the venoms. We also detected some unique proteins that were not known to be present in these venoms. The presence of a natriuretic peptide, vespryn, and serine protease families was detected in B. candidus venom. We also detected the presence of subunit A and B of β-bungarotoxin and α-bungarotoxin which had not been previously found in B. fasciatus venom. Understanding the proteome composition of Malaysian krait species will provide useful information on unique toxins and proteins which are present in the venoms. This knowledge will assist in the management of krait envenoming. In addition, these proteins may have potential use as research tools or as drug-design templates. BIOLOGICAL SIGNIFICANCE This study has revealed the proteome composition of Malaysian B. candidus and B. fasciatus venoms, two medically important snake species in Asia. Information on the venom proteome of these species will provide useful information for krait bite management and aid in antivenom selection. Venom proteome profiles of these venoms showed that there are significant differences in the venom protein family compositions. Detection of proteins and peptides that have not been documented in these species such as natriuretic peptides, vespryn and serine proteases provides new knowledge on the composition of these venoms. The roles of these new proteins and peptides in krait envenoming are still unknown. Discovery of these proteins and peptides may also be useful for future research tool and therapeutic development.
Collapse
Affiliation(s)
- Muhamad Rusdi Ahmad Rusmili
- Monash Venom Group, Department of Pharmacology, Faculty of Medicine, Nursing and Health Sciences, 3168 Clayton, Victoria, Australia; Jeffrey Cheah School of Medicine and Health Sciences, Monash University Malaysia, 46150 Bandar Sunway, Malaysia; Kulliyyah of Pharmacy, International Islamic University Malaysia, Kuantan Campus, Bandar Indera Mahkota, 25200 Kuantan, Pahang, Malaysia
| | - Tee Ting Yee
- Jeffrey Cheah School of Medicine and Health Sciences, Monash University Malaysia, 46150 Bandar Sunway, Malaysia
| | - Mohd Rais Mustafa
- Department of Pharmacology, Faculty of Medicine, University of Malaya, 59100 Kuala Lumpur, Malaysia
| | - Wayne C Hodgson
- Monash Venom Group, Department of Pharmacology, Faculty of Medicine, Nursing and Health Sciences, 3168 Clayton, Victoria, Australia
| | - Iekhsan Othman
- Jeffrey Cheah School of Medicine and Health Sciences, Monash University Malaysia, 46150 Bandar Sunway, Malaysia.
| |
Collapse
|