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Kaewnu K, Kongkaew S, Unajak S, Hoihuan A, Jaengphop C, Kanatharana P, Thavarungkul P, Limbut W. A reusable screen-printed carbon electrode-based aptasensor for the determination of chloramphenicol in food and environment samples. Talanta 2024; 273:125857. [PMID: 38490024 DOI: 10.1016/j.talanta.2024.125857] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2023] [Revised: 02/15/2024] [Accepted: 02/28/2024] [Indexed: 03/17/2024]
Abstract
An electrochemical aptasensor was developed for the determination of chloramphenicol (CAP) in fresh foods and food products. The aptasensor was developed using Prussian blue (PB) and chitosan (CS) film. PB acts as a redox probe for detection and CS acts as a sorption material. The aptamer (Apt) was immobilized on a screen-printed carbon electrode (SPCE) modified with gold nanoparticles (AuNPs). Under optimum conditions, the linearity of the aptasensor was between 1.0 and 6.0 × 106 ng L-1 with a detection limit of 0.65 and a quantification limit of 2.15 ng L-1. The electrode could be regenerated up to 24 times without the use of chemicals. The aptasensor showed good repeatability (RSD <11.2%) and good reproducibility (RSD <7.7%). The proposed method successfully quantified CAP in milk, shrimp pond water and shrimp meat with good accuracy (recovery = 88.0 ± 0.6% to 100 ± 2%). The proposed aptasensor could be especially useful in agriculture to ensure the quality of food and the environment and could be used to determine other antibiotics.
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Affiliation(s)
- Krittapas Kaewnu
- Division of Health and Applied Sciences, Faculty of Science, Prince of Songkla University, Hat Yai, Songkhla, 90110, Thailand; Forensic Science Innovation and Service Center, Prince of Songkla University, Hat Yai, Songkhla, 90110, Thailand
| | - Supatinee Kongkaew
- Division of Health and Applied Sciences, Faculty of Science, Prince of Songkla University, Hat Yai, Songkhla, 90110, Thailand; Forensic Science Innovation and Service Center, Prince of Songkla University, Hat Yai, Songkhla, 90110, Thailand; Center of Excellence for Trace Analysis and Biosensor, Prince of Songkla University, Hat Yai, Songkhla, 90110, Thailand; Center of Excellence for Innovation in Chemistry, Faculty of Science, Prince of Songkla University, Hat Yai, Songkhla, 90110, Thailand
| | - Sasimanas Unajak
- Department of Biochemistry, Faculty of Science, Kasetsart University, 50 Ngam Wong Wan, Chatuchak, Bangkok, 10900, Thailand; Kasetsart Vaccines and Biologics Innovation Centre, 50 Ngam Wong Wan, Chatuchak, Bangkok 10900, Thailand
| | - Atittaya Hoihuan
- Department of Biochemistry, Faculty of Science, Kasetsart University, 50 Ngam Wong Wan, Chatuchak, Bangkok, 10900, Thailand; Kasetsart Vaccines and Biologics Innovation Centre, 50 Ngam Wong Wan, Chatuchak, Bangkok 10900, Thailand
| | - Chutikarn Jaengphop
- Department of Biochemistry, Faculty of Science, Kasetsart University, 50 Ngam Wong Wan, Chatuchak, Bangkok, 10900, Thailand; Kasetsart Vaccines and Biologics Innovation Centre, 50 Ngam Wong Wan, Chatuchak, Bangkok 10900, Thailand
| | - Proespichaya Kanatharana
- Center of Excellence for Trace Analysis and Biosensor, Prince of Songkla University, Hat Yai, Songkhla, 90110, Thailand; Center of Excellence for Innovation in Chemistry, Faculty of Science, Prince of Songkla University, Hat Yai, Songkhla, 90110, Thailand; Division of Physical Science, Faculty of Science, Prince of Songkla University, Hat Yai, Songkhla, 90110, Thailand
| | - Panote Thavarungkul
- Center of Excellence for Trace Analysis and Biosensor, Prince of Songkla University, Hat Yai, Songkhla, 90110, Thailand; Center of Excellence for Innovation in Chemistry, Faculty of Science, Prince of Songkla University, Hat Yai, Songkhla, 90110, Thailand; Division of Physical Science, Faculty of Science, Prince of Songkla University, Hat Yai, Songkhla, 90110, Thailand
| | - Warakorn Limbut
- Division of Health and Applied Sciences, Faculty of Science, Prince of Songkla University, Hat Yai, Songkhla, 90110, Thailand; Forensic Science Innovation and Service Center, Prince of Songkla University, Hat Yai, Songkhla, 90110, Thailand; Center of Excellence for Trace Analysis and Biosensor, Prince of Songkla University, Hat Yai, Songkhla, 90110, Thailand; Center of Excellence for Innovation in Chemistry, Faculty of Science, Prince of Songkla University, Hat Yai, Songkhla, 90110, Thailand.
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Chaisri N, Jaengphop C, Hirono I, Unajak S. Rapid Apta-Chromogenic Detection Method for Nitrofuran Metabolite Determination. Molecules 2024; 29:1720. [PMID: 38675539 DOI: 10.3390/molecules29081720] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2023] [Revised: 02/27/2024] [Accepted: 02/27/2024] [Indexed: 04/28/2024] Open
Abstract
Nitrofuran (NF) contamination in food products is a global problem resulting in the banned utilization and importation of nitrofuran contaminated products. A novel chromogenic detection method using a specific DNA aptamer with high affinity and specificity to nitrofurans was developed. Single-stranded DNA aptamers specific to nitrofuran metabolites, including 3-amino-2-oxazolidinone (AOZ), 3-amino-5-methylmorpholino-2-oxazolidinone (AMOZ), and 1-aminohydantoin (AHD), were isolated using magnetic bead-SELEX. The colorimetric detection of nitrofurans using gold nanoparticles (AuNPs) exhibited an AOZ detection range of 0.01-0.06 ppb with a limit of detection (LOD) of 0.03 ppb. At the same time, this system could detect AMOZ and AHD at a range of 0.06 ppb and 10 ppb, respectively. The fast nitrofuran extraction method was optimized for food, such as fish tissues and honey, adjusted to be completed within 3-6 h. This novel apta-chromogenic detection method could detect NF metabolites with a sensitivity below the minimum required performance limit (MPRL). This analysis will be valuable for screening, with a shortened time of detection for aquaculture products such as shrimp and fish muscle tissues.
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Affiliation(s)
- Navarat Chaisri
- Interdisciplinary Graduate Program in Genetic Engineering, The Graduate School, Kasetsart University, Bangkok 10900, Thailand
| | - Chutikarn Jaengphop
- Department of Biochemistry, Faculty of Science, Kasetsart University, Bangkok 10900, Thailand
| | - Ikuo Hirono
- Laboratory of Genome Science, Graduate School of Tokyo University of Marine Science and Technology, Tokyo 108-8477, Japan
| | - Sasimanas Unajak
- Interdisciplinary Graduate Program in Genetic Engineering, The Graduate School, Kasetsart University, Bangkok 10900, Thailand
- Department of Biochemistry, Faculty of Science, Kasetsart University, Bangkok 10900, Thailand
- Kasetsart Vaccines and Biologics Innovation Centre, 50 Ngam Wong Wan, Chatuchak, Bangkok 10900, Thailand
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Anuntasomboon P, Siripattanapipong S, Unajak S, Choowongkomon K, Burchmore R, Leelayoova S, Mungthin M, E-Kobon T. Identification of a unique conserved region from a kinetoplastid genome of Leishmania orientalis (formerly named Leishmania siamensis) strain PCM2 in Thailand. Sci Rep 2023; 13:19644. [PMID: 37950023 PMCID: PMC10638283 DOI: 10.1038/s41598-023-46638-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2023] [Accepted: 11/03/2023] [Indexed: 11/12/2023] Open
Abstract
Mitochondrial DNAs (mtDNAs) appear in almost all eukaryotic species and are useful molecular markers for phylogenetic studies and species identification. Kinetoplast DNAs (kDNAs) are structurally complex circular mtDNA networks in kinetoplastids, divided into maxicircles and minicircles. Despite several kDNAs of many Leishmania species being examined, the kDNAs of the new species, Leishmania orientalis (formerly named Leishmania siamensis) strain PCM2, have not been explored. This study aimed to investigate the maxicircle and minicircle DNAs of L. orientalis strain PCM2 using hybrid genome sequencing technologies and bioinformatic analyses. The kDNA sequences were isolated and assembled using the SPAdes hybrid assembler from the Illumina short-read and PacBio long-read data. Circular contigs of the maxicircle and minicircle DNAs were reconstructed and confirmed by BLASTn and rKOMICs programs. The kDNA genome was annotated by BLASTn before the genome comparison and phylogenetic analysis by progressiveMauve, MAFFT, and MEGA programs. The maxicircle of L. orientalis strain PCM2 (18,215 bp) showed 99.92% similarity and gene arrangement to Leishmania enriettii strain LEM3045 maxicircle with variation in the 12s rRNA gene and divergent region. Phylogenetics of the whole sequence, coding regions, divergent regions, and 12s rRNA gene also confirmed this relationship and subgenera separation. The identified 105 classes of minicircles (402-1177 bp) were clustered monophyletically and related to the Leishmania donovani minicircles. The kinetoplast maxicircle and minicircle DNAs of L. orientalis strain PCM2 contained a unique conserved region potentially useful for specific diagnosis of L. orientalis and further exploration of this parasite population genetics in Thailand and related regions.
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Affiliation(s)
- Pornchai Anuntasomboon
- Department of Genetics, Faculty of Science, Kasetsart University, Bangkok, Thailand
- Omics Center for Agriculture, Bioresources, Food, and Health, Kasetsart University (OmiKU), Bangkok, Thailand
| | | | - Sasimanas Unajak
- Department of Biochemistry, Faculty of Science, Kasetsart University, Bangkok, Thailand
| | | | - Richard Burchmore
- Glasgow Polyomics, College of Medical, Veterinary and Life Sciences, University of Glasgow, Glasgow, UK
| | - Saovanee Leelayoova
- Department of Parasitology, Phramongkutklao College of Medicine, Bangkok, Thailand
| | - Mathirut Mungthin
- Department of Parasitology, Phramongkutklao College of Medicine, Bangkok, Thailand
| | - Teerasak E-Kobon
- Department of Genetics, Faculty of Science, Kasetsart University, Bangkok, Thailand.
- Omics Center for Agriculture, Bioresources, Food, and Health, Kasetsart University (OmiKU), Bangkok, Thailand.
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Promrug D, Wittayacom K, Nathapanan N, Dong HT, Thongyoo P, Unajak S, Reamtong O, Boonyuen U, Aroonnual A, Shioda T, Thirapanmethee K, Arthan D. Cocultures of Enterococcus faecium and Aeromonas veronii Induce the Secretion of Bacteriocin-like Substances against Aeromonas. J Agric Food Chem 2023; 71:16194-16203. [PMID: 37779478 PMCID: PMC10623555 DOI: 10.1021/acs.jafc.3c04019] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/14/2023] [Revised: 08/22/2023] [Accepted: 09/08/2023] [Indexed: 10/03/2023]
Abstract
Lactic acid bacteria (LAB) were screened from Lutjanus russellii (red sea bass), and their antimicrobial activities were evaluated against two Aeromonas species isolated from the Nile tilapia, namely, Aeromonas veronii (AV) and Aeromonas jandaei (AJ). Three LAB isolates, Enterococcus faecium MU8 (EF_8), Enterococcus faecalis MU2 (EFL_2), and E. faecalis MU9 (EFL_9), were found to inhibit both AV and AJ; however, their cell-free supernatant (CFS) did not do so. Interestingly, bacteriocin-like substances (BLS) induced by cocultures of EF_8 with AV exhibited the highest antimicrobial activity against both Aeromonas sp. The size of BLS was less than 1.0 kDa; the purified BLS were susceptible to proteinase K digestion, indicating that they are peptides. BLS contained 13 identified peptides derived from E. faecium, as determined by liquid chromatography-tandem mass spectrometry. Cocultures of Gram-positive-producing and -inducing LAB strains have been used to increase bacteriocin yields. To our knowledge, this is the first report describing inducible BLS produced by cocultures of Gram-positive-producing and Gram-negative-inducing strains.
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Affiliation(s)
- Dusit Promrug
- Department
of Tropical Nutrition and Food Science, Faculty of Tropical Medicine, Mahidol University, Bangkok 10400, Thailand
| | - Kanjana Wittayacom
- Faculty
of Allied Health Science, Burapha University, 169 Long Had Bangsaen Rd, Saen Suk,
ChonBuri District, ChonBuri 20131, Thailand
| | - Nantipan Nathapanan
- Faculty
of Allied Health Science, Burapha University, 169 Long Had Bangsaen Rd, Saen Suk,
ChonBuri District, ChonBuri 20131, Thailand
| | - Ha Thanh Dong
- Aquaculture
and Aquatic Resources Program, Department of Food, Agriculture and
Bioresources, School of Environment, Resources and Development, Asian Institute of Technology, Khlong Nueng 12120, Thailand
| | - Panumart Thongyoo
- Department
of Chemistry, Faculty of Science and Technology, Thammasat University, Phaholyothin Road, Klong Nung District, Klong
Luang, Phatum Thani 12120, Thailand
| | - Sasimanas Unajak
- Department
of Biochemistry, Faculty of Science, Kasetsat
University, Chatuchak, Bangkok 10903, Thailand
| | - Onrapak Reamtong
- Department
of Molecular Tropical Medicine and Genetics, Faculty of Tropical Medicine, Mahidol University, Bangkok 10400, Thailand
| | - Usa Boonyuen
- Department
of Molecular Tropical Medicine and Genetics, Faculty of Tropical Medicine, Mahidol University, Bangkok 10400, Thailand
| | - Amornrat Aroonnual
- Department
of Tropical Nutrition and Food Science, Faculty of Tropical Medicine, Mahidol University, Bangkok 10400, Thailand
| | - Tatsuo Shioda
- Department
of Viral Infections, Research Institute for Microbial Diseases, Osaka University, 3-1 Yamadaoka, Suita, Osaka 565-087, Japan
| | - Krit Thirapanmethee
- Department
of Microbiology, Faculty of Pharmacy, Mahidol
University. 447 Sri-Ayuthaya, Rajathevi, Bangkok 10400, Thailand
| | - Dumrongkiet Arthan
- Department
of Tropical Nutrition and Food Science, Faculty of Tropical Medicine, Mahidol University, Bangkok 10400, Thailand
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Proespraiwong P, Mavichak R, Imaizumi K, Hirono I, Unajak S. Evaluation of Bacillus spp. as Potent Probiotics with Reduction in AHPND-Related Mortality and Facilitating Growth Performance of Pacific White Shrimp ( Litopenaeus vannamei) Farms. Microorganisms 2023; 11:2176. [PMID: 37764020 PMCID: PMC10537061 DOI: 10.3390/microorganisms11092176] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2023] [Revised: 08/04/2023] [Accepted: 08/10/2023] [Indexed: 09/29/2023] Open
Abstract
Acute hepatopancreatic necrosis disease (AHPND) is a serious bacterial disease affecting shrimp aquaculture worldwide. In this study, natural microbes were used in disease prevention and control. Probiotics derived from Bacillus spp. were isolated from the stomachs of AHPND-surviving Pacific white shrimp Litopenaeus vannamei (22 isolates) and mangrove forest soil near the shrimp farms (10 isolates). Bacillus spp. were genetically identified and characterized based on the availability of antimicrobial peptide (AMP)-related genes. The phenotypic characterization of all Bacillus spp. was determined based on their capability to inhibit AHPND-causing strains of Vibrio parahaemolyticus (VPAHPND). The results showed that Bacillus spp. without AMP-related genes were incapable of inhibiting VPAHPND in vitro, while other Bacillus spp. harboring at least two AMP-related genes exhibited diverse inhibition activities. Interestingly, K3 [B. subtilis (srfAA+ and bacA+)], isolated from shrimp, exerted remarkable inhibition against VPAHPND (80% survival) in Pacific white shrimp and maintained a reduction in shrimp mortality within different ranges of salinity (75-95% survival). Moreover, with different strains of VPAHPND, B. subtilis (K3) showed outstanding protection, and the survival rate of shrimp remained stable among the tested groups (80-95% survival). Thus, B. subtilis (K3) was further used to determine its efficiency in shrimp farms in different locations of Vietnam. Lower disease occurrences (2 ponds out of 30 ponds) and greater production efficiency were noticeable in the B. subtilis (K3)-treated farms. Taking the results of this study together, the heat-shock isolation and genotypic-phenotypic characterization of Bacillus spp. enable the selection of probiotics that control AHPND in Pacific white shrimp. Consequently, greater disease prevention and growth performance were affirmed to be beneficial in the use of these probiotics in shrimp cultivation, which will sustain shrimp aquaculture and be environmentally friendly.
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Affiliation(s)
- Porranee Proespraiwong
- Department of Biochemistry, Faculty of Science, Kasetsart University, Bangkok 10900, Thailand; (P.P.); (K.I.)
- Kasetsart Vaccines and Bio-Product Innovation Centre, Kasetsart University, Bangkok 10900, Thailand
| | - Rapeepat Mavichak
- Charoen Pokphand Foods Public Co., Ltd., Aquatic Animal Health Research Center, Samut Sakhon 74000, Thailand;
| | - Kentaro Imaizumi
- Department of Biochemistry, Faculty of Science, Kasetsart University, Bangkok 10900, Thailand; (P.P.); (K.I.)
- Kasetsart Vaccines and Bio-Product Innovation Centre, Kasetsart University, Bangkok 10900, Thailand
| | - Ikuo Hirono
- Graduate School of Marine Science and Technology, Tokyo University of Marine Science and Technology, Konan 4-5-7, Minato-Ku, Tokyo 108-8477, Japan;
| | - Sasimanas Unajak
- Department of Biochemistry, Faculty of Science, Kasetsart University, Bangkok 10900, Thailand; (P.P.); (K.I.)
- Kasetsart Vaccines and Bio-Product Innovation Centre, Kasetsart University, Bangkok 10900, Thailand
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Anuntasomboon P, Siripattanapipong S, Unajak S, Choowongkomon K, Burchmore R, Leelayoova S, Mungthin M, E-kobon T. Identification of a conserved maxicircle and unique minicircles as part of the mitochondrial genome of Leishmania martiniquensis strain PCM3 in Thailand. Parasit Vectors 2022; 15:459. [PMID: 36510327 PMCID: PMC9743726 DOI: 10.1186/s13071-022-05592-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2022] [Accepted: 11/17/2022] [Indexed: 12/14/2022] Open
Abstract
BACKGROUND The mitochondrial DNA of trypanosomatids, including Leishmania, is known as kinetoplast DNAs (kDNAs). The kDNAs form networks of hundreds of DNA circles that are evidently interlocked and require complex RNA editing. Previous studies showed that kDNA played a role in drug resistance, adaptation, and survival of Leishmania. Leishmania martiniquensis is one of the most frequently observed species in Thailand, and its kDNAs have not been illustrated. METHODS This study aimed to extract the kDNA sequences from Illumina short-read and PacBio long-read whole-genome sequence data of L. martiniquensis strain PCM3 priorly isolated from the southern province of Thailand. A circular maxicircle DNA was reconstructed by de novo assembly using the SPAdes program, while the minicircle sequences were retrieved and assembled by the rKOMIC tool. The kDNA contigs were confirmed by blasting to the NCBI database, followed by comparative genomic and phylogenetic analysis. RESULTS We successfully constructed the complete circular sequence of the maxicircle (19,008 bp) and 214 classes of the minicircles from L. martiniquensis strain PCM3. The genome comparison and annotation showed that the maxicircle structure of L. martiniquensis strain PCM3 was similar to those of L. enriettii strain LEM3045 (84.29%), L. arabica strain LEM1108 (82.79%), and L. tarentolae (79.2%). Phylogenetic analysis also showed unique evolution of the minicircles of L. martiniquensis strain PCM3 from other examined Leishmania species. CONCLUSIONS This was the first report of the complete maxicircle and 214 minicircles of L. martiniquensis strain PCM3 using integrated whole-genome sequencing data. The information will be helpful for further improvement of diagnosis methods and monitoring genetic diversity changes of this parasite.
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Affiliation(s)
- Pornchai Anuntasomboon
- grid.9723.f0000 0001 0944 049XDepartment of Genetics, Faculty of Science, Kasetsart University, Bangkok, Thailand ,grid.9723.f0000 0001 0944 049XOmics Center for Agriculture, Bioresources, Food, and Health, Kasetsart University (OmiKU), Bangkok, Thailand
| | - Suradej Siripattanapipong
- grid.10223.320000 0004 1937 0490Department of Microbiology, Faculty of Science, Mahidol University, Bangkok, Thailand
| | - Sasimanas Unajak
- grid.9723.f0000 0001 0944 049XDepartment of Biochemistry, Faculty of Science, Kasetsart University, Bangkok, Thailand
| | - Kiattawee Choowongkomon
- grid.9723.f0000 0001 0944 049XDepartment of Biochemistry, Faculty of Science, Kasetsart University, Bangkok, Thailand
| | - Richard Burchmore
- grid.8756.c0000 0001 2193 314XGlasgow Polyomics, College of Medical, Veterinary and Life Sciences, University of Glasgow, Glasgow, UK
| | - Saovanee Leelayoova
- grid.10223.320000 0004 1937 0490Department of Parasitology, Phramongkutklao College of Medicine, Bangkok, Thailand
| | - Mathirut Mungthin
- grid.10223.320000 0004 1937 0490Department of Parasitology, Phramongkutklao College of Medicine, Bangkok, Thailand
| | - Teerasak E-kobon
- grid.9723.f0000 0001 0944 049XDepartment of Genetics, Faculty of Science, Kasetsart University, Bangkok, Thailand ,grid.9723.f0000 0001 0944 049XOmics Center for Agriculture, Bioresources, Food, and Health, Kasetsart University (OmiKU), Bangkok, Thailand
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Anuntasomboon P, Siripattanapipong S, Unajak S, Choowongkomon K, Burchmore R, Leelayoova S, Mungthin M, E-kobon T. Making the Most of Its Short Reads: A Bioinformatics Workflow for Analysing the Short-Read-Only Data of Leishmania orientalis (Formerly Named Leishmania siamensis) Isolate PCM2 in Thailand. Biology 2022; 11:biology11091272. [PMID: 36138751 PMCID: PMC9495971 DOI: 10.3390/biology11091272] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/26/2022] [Revised: 08/23/2022] [Accepted: 08/24/2022] [Indexed: 11/17/2022]
Abstract
Simple Summary Leishmaniasis is a parasitic disease caused by flagellated protozoa of the genus Leishmania. Multiple genome sequencing platforms have been employed to complete Leishmania genomes at the expense of high cost. This study proposes an integrative bioinformatic workflow for assembling only the short-read data of Leishmania orientalis isolate PCM2 from Thailand and produce an acceptable-quality genome for further genomic analysis. This workflow gives extensive information required for identifying strain-specific markers and virulence-associated genes useful for drug and vaccine development before a more exhaustive and expensive investigation. Abstract Background: Leishmania orientalis (formerly named Leishmania siamensis) has been neglected for years in Thailand. The genomic study of L. orientalis has gained much attention recently after the release of the first high-quality reference genome of the isolate LSCM4. The integrative approach of multiple sequencing platforms for whole-genome sequencing has proven effective at the expense of considerably expensive costs. This study presents a preliminary bioinformatic workflow including the use of multi-step de novo assembly coupled with the reference-based assembly method to produce high-quality genomic drafts from the short-read Illumina sequence data of L. orientalis isolate PCM2. Results: The integrating multi-step de novo assembly by MEGAHIT and SPAdes with the reference-based method using the L. enriettii genome and salvaging the unmapped reads resulted in the 30.27 Mb genomic draft of L. orientalis isolate PCM2 with 3367 contigs and 8887 predicted genes. The results from the integrated approach showed the best integrity, coverage, and contig alignment when compared to the genome of L. orientalis isolate LSCM4 collected from the northern province of Thailand. Similar patterns of gene ratios and frequency were observed from the GO biological process annotation. Fifty GO terms were assigned to the assembled genomes, and 23 of these (accounting for 61.6% of the annotated genes) showed higher gene counts and ratios when results from our workflow were compared to those of the LSCM4 isolate. Conclusions: These results indicated that our proposed bioinformatic workflow produced an acceptable-quality genome of L. orientalis strain PCM2 for functional genomic analysis, maximising the usage of the short-read data. This workflow would give extensive information required for identifying strain-specific markers and virulence-associated genes useful for drug and vaccine development before a more exhaustive and expensive investigation.
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Affiliation(s)
- Pornchai Anuntasomboon
- Department of Genetics, Faculty of Science, Kasetsart University, Bangkok 10900, Thailand
- Omics Center for Agriculture, Bioresources, Food, and Health, Kasetsart University (OmiKU), Bangkok 10900, Thailand
| | | | - Sasimanas Unajak
- Department of Biochemistry, Faculty of Science, Kasetsart University, Bangkok 10900, Thailand
| | - Kiattawee Choowongkomon
- Department of Biochemistry, Faculty of Science, Kasetsart University, Bangkok 10900, Thailand
| | - Richard Burchmore
- Glasgow Polyomics, College of Medical, Veterinary and Life Sciences, University of Glasgow, Glasgow G12 8QQ, UK
| | - Saovanee Leelayoova
- Department of Parasitology, Phramongkutklao College of Medicine, Bangkok 10400, Thailand
| | - Mathirut Mungthin
- Department of Parasitology, Phramongkutklao College of Medicine, Bangkok 10400, Thailand
| | - Teerasak E-kobon
- Department of Genetics, Faculty of Science, Kasetsart University, Bangkok 10900, Thailand
- Omics Center for Agriculture, Bioresources, Food, and Health, Kasetsart University (OmiKU), Bangkok 10900, Thailand
- Correspondence: ; Tel.: +66-812-85-4672
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8
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Mongkolpathumrat P, Nernpermpisooth N, Kijtawornrat A, Pikwong F, Chouyratchakarn W, Yodsheewan R, Unajak S, Kumphune S. Adeno-associated virus 9 vector-mediated cardiac-selective expression of human secretory leukocyte protease inhibitor attenuates myocardial ischemia/reperfusion injury. Front Cardiovasc Med 2022; 9:976083. [PMID: 36061560 PMCID: PMC9437585 DOI: 10.3389/fcvm.2022.976083] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2022] [Accepted: 07/27/2022] [Indexed: 11/13/2022] Open
Abstract
Protease enzymes contribute to the initiation of cardiac remodeling and heart failure after myocardial ischemic/reperfusion (I/R) injury. Protease inhibitors attenuate protease activity and limit left ventricular dysfunction and remodeling. Previous studies showed the cardioprotective effect of secretory leukocyte protease inhibitor (SLPI) against I/R injury. However, overexpression of SLPI gene in cardiovascular diseases has only been investigated in an in vitro experiment. Here, cardiac-selective expression of the human secretory leukocyte protease inhibitor (hSLPI) gene and its effect on I/R injury were investigated. Adeno-associated virus (AAV) serotype 9 carrying hSLPI under the control of cardiac-selective expression promoter (cardiac troponin, cTn) was intravenously administered to Sprague–Dawley rats for 4 weeks prior to coronary artery ligation. The results showed that myocardial-selective expression of hSLPI significantly reduced infarct size, cardiac troponin I (cTnI), creatine kinase-MB (CK-MB), and myoglobin levels that all served to improve cardiac function. Moreover, overexpression of hSLPI showed a reduction in inflammatory cytokines, oxidatively modified protein carbonyl (PC) content, ischemia-modified albumin (IMA), and necrosis and cardiac tissue degeneration. In conclusion, this is the first study to demonstrate cardiac-selective gene delivery of hSLPI providing cardioprotection against myocardial I/R injury in an in vivo model.
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Affiliation(s)
| | - Nitirut Nernpermpisooth
- Integrative Biomedical Research Unit (IBRU), Faculty of Allied Health Sciences, Naresuan University, Phitsanulok, Thailand
- Department of Cardio-Thoracic Technology, Faculty of Allied Health Sciences, Naresuan University, Phitsanulok, Thailand
| | - Anusak Kijtawornrat
- Department of Physiology, Faculty of Veterinary Science, Chulalongkorn University, Bangkok, Thailand
| | - Faprathan Pikwong
- Biomedical Engineering Institute (BMEI), Chiang Mai University, Chiang Mai, Thailand
| | | | - Rungrueang Yodsheewan
- Department of Pathology, Faculty of Veterinary Medicine, Kasetsart University, Bangkok, Thailand
| | - Sasimanas Unajak
- Department of Biochemistry, Faculty of Science, Kasetsart University, Bangkok, Thailand
| | - Sarawut Kumphune
- Biomedical Engineering Institute (BMEI), Chiang Mai University, Chiang Mai, Thailand
- Integrative Biomedical Research Unit (IBRU), Faculty of Allied Health Sciences, Naresuan University, Phitsanulok, Thailand
- *Correspondence: Sarawut Kumphune
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9
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Chamtim P, Suwan E, Dong HT, Sirisuay S, Areechon N, Wangkahart E, Hirono I, Mavichak R, Unajak S. Combining segments 9 and 10 in DNA and recombinant protein vaccines conferred superior protection against tilapia lake virus in hybrid red tilapia (oreochromis sp.) compared to single segment vaccines. Front Immunol 2022; 13:935480. [PMID: 35958595 PMCID: PMC9359061 DOI: 10.3389/fimmu.2022.935480] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2022] [Accepted: 06/27/2022] [Indexed: 11/30/2022] Open
Abstract
Tilapia lake virus (TiLV) now affects Nile tilapia culture worldwide, with no available commercial vaccine for disease prevention. DNA and recombinant protein-based vaccines were developed and tested following viral isolation and characterization. The viral strain isolated from diseased hybrid red tilapia (Oreochromis sp.) shared high levels of morphological and genomic similarity (95.49-99.52%) with other TiLV isolates in the GenBank database. TiLV segment 9 (Tis9) and segment 10 (Tis10) DNA vaccines (pcDNA-Tis9 and pcDNA-Tis10) and recombinant protein vaccines (Tis9 and Tis10) were prepared and tested for their efficacy in juvenile hybrid red tilapia. Fish were immunized with either single vaccines (pcDNA-Tis9, pcDNA-Tis10, Tis9 and Tis10) or combined vaccines (pcDNA-Tis9 + pcDNA-Tis10 and Tis9 + Tis10) by intramuscular injection and intraperitoneal injection for DNA and protein vaccines, respectively. Negative controls were injected with PBS or a naked pcDNA3.1 vector in the same manner. An experimental challenge with TiLV was carried out at 4 weeks post-vaccination (wpv) by intraperitoneal injection with a dose of 1 × 105 TCID50 per fish. Relative percent survival (RPS) ranged from 16.67 ± 00.00 to 61.11 ± 9.62%. The Tis10 and pcDNA-Tis10 vaccines conferred better protection compared to Tis9 and pcDNA-Tis9. Highest levels of protection were observed in pcDNA-Tis9 + pcDNA-Tis10 (61.11 ± 9.62%) and Tis9 + Tis10 (55.56 ± 9.62%) groups. Specific antibody was detected in all vaccinated groups at 1-4 wpv by Dot Blot method, with the highest integrated density at 2 and 3 wpv. In silico analysis of Tis9 and Tis10 revealed a number of B-cell epitopes in their coil structure, possibly reflecting their immunogenicity. Findings suggested that the combination of Tis9 and Tis10 in DNA and recombinant protein vaccine showed high efficacy for the prevention of TiLV disease in hybrid red tilapia.
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Affiliation(s)
- Pitakthai Chamtim
- Department of Biochemistry, Faculty of Science, Kasetsart University, Bangkok, Thailand
| | - Eukote Suwan
- Faculty of Veterinary Technology, Kasetsart University, Bangkok, Thailand
| | - Ha Thanh Dong
- Aquaculture and Aquatic Resources Management Program, Department of Food, Agriculture and Bioresources (AARM/FAB), School of Environment, Resources and Development, Asian Institute of Technology, Pathum Thani, Thailand
| | - Soranuth Sirisuay
- Department of Aquaculture, Faculty of Fisheries, Kasetsart University, Bangkok, Thailand
| | - Nontawith Areechon
- Department of Aquaculture, Faculty of Fisheries, Kasetsart University, Bangkok, Thailand
| | - Eakapol Wangkahart
- Division of Fisheries, Department of Agricultural Technology, Faculty of Technology, Mahasarakham University, Maha Sarakham, Thailand
| | - Ikuo Hirono
- Graduate School of Marine Science and Technology, Tokyo University of Marine Science and Technology, Tokyo, Japan
| | - Rapeepat Mavichak
- Molecular Biology Research Department, Charoen Pokphand Foods Public Co., Ltd., Aquatic Animal Health Research Center, Samut Sakhon, Thailand
| | - Sasimanas Unajak
- Department of Biochemistry, Faculty of Science, Kasetsart University, Bangkok, Thailand
- *Correspondence: Sasimanas Unajak,
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10
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Mongkolpathumrat P, Kijtawornrat A, Suwan E, Unajak S, Panya A, Pusadee T, Kumphune S. Anti-Protease Activity Deficient Secretory Leukocyte Protease Inhibitor (SLPI) Exerts Cardioprotective Effect against Myocardial Ischaemia/Reperfusion. Biomedicines 2022; 10:biomedicines10050988. [PMID: 35625725 PMCID: PMC9138276 DOI: 10.3390/biomedicines10050988] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2022] [Revised: 04/21/2022] [Accepted: 04/23/2022] [Indexed: 12/02/2022] Open
Abstract
Inhibition of proteases shows therapeutic potential. Our previous studies demonstrated the cardioprotection by the Secretory Leukocyte Protease Inhibitor (SLPI) against myocardial ischaemia/reperfusion (I/R) injury. However, it is unclear whether the cardioprotective effect of SLPI seen in our previous works is due to the inhibition of protease enzymes. Several studies demonstrate that the anti-protease independent activity of SLPI could provide therapeutic benefits. Here, we show for the first time that recombinant protein of anti-protease deficient mutant SLPI (L72K, M73G, L74G) (mt-SLPI) could significantly reduce cell death and intracellular reactive oxygen species (ROS) production against an in vitro simulated I/R injury. Furthermore, post-ischaemic treatment of mt-SLPI is found to significantly reduce infarct size and cardiac biomarkers lactate dehydrogenase (LDH) and creatine kinase-MB (CK-MB) activity, improve cardiac functions, attenuate I/R induced-p38 MAPK phosphorylation, and reduce apoptotic regulatory protein levels, including Bax, cleaved-Caspase-3 and total Capase-8, in rats subjected to an in vivo I/R injury. Additionally, the beneficial effect of mt-SLPI was not significantly different from the wildtype (wt-SLPI). In summary, SLPI could provide cardioprotection without anti-protease activity, which could be more clinically beneficial in terms of providing cardioprotection without interfering with basal serine protease activity.
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Affiliation(s)
- Podsawee Mongkolpathumrat
- Graduate Programs in Biomedical Sciences, Faculty of Allied Health Sciences, Naresuan University, Phitsanulok 65000, Thailand;
- Integrative Biomedical Research Unit (IBRU), Faculty of Allied Health Sciences, Naresuan University, Phitsanulok 65000, Thailand
- Biomedical Engineering Institute (BMEI), Chiang Mai University, Chiang Mai 50200, Thailand
| | - Anusak Kijtawornrat
- Department of Physiology, Faculty of Veterinary Science, Chulalongkorn University, Bangkok 10330, Thailand;
| | - Eukote Suwan
- Department of Veterinary Technology, Faculty of Veterinary Technology, Kasetsart University, Bangkok 10900, Thailand;
| | - Sasimanas Unajak
- Department of Biochemistry, Faculty of Science, Kasetsart University, Bangkok 10900, Thailand;
| | - Aussara Panya
- Department of Biology, Faculty of Science, Chiang Mai University, Chiang Mai 50200, Thailand;
| | - Tonapha Pusadee
- Department of Plant and Soil Science, Faculty of Agriculture, Chiang Mai University, Chiang Mai 50200, Thailand;
| | - Sarawut Kumphune
- Integrative Biomedical Research Unit (IBRU), Faculty of Allied Health Sciences, Naresuan University, Phitsanulok 65000, Thailand
- Biomedical Engineering Institute (BMEI), Chiang Mai University, Chiang Mai 50200, Thailand
- Correspondence: ; Tel.: +66-624-693-987
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11
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Anuntasomboon P, Siripattanapipong S, Unajak S, Choowongkomon K, Burchmore R, Leelayoova S, Mungthin M, E-kobon T. Comparative Draft Genomes of Leishmania orientalis Isolate PCM2 (Formerly Named Leishmania siamensis) and Leishmania martiniquensis Isolate PCM3 from the Southern Province of Thailand. Biology 2022; 11:biology11040515. [PMID: 35453714 PMCID: PMC9031872 DOI: 10.3390/biology11040515] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/12/2022] [Revised: 03/21/2022] [Accepted: 03/24/2022] [Indexed: 11/22/2022]
Abstract
Simple Summary This study successfully sequenced the draft genomes of the southern isolates of Leishmania orientalis and Leishmania martiniquensis in Thailand. The comparison with the genomes of the northern isolates revealed species-level similarity with a level of genome and proteome variation, suggesting the different emerging strains. Comparing the proteins of these southern strains to those of the northern ones and 14 other Leishmania species showed six protein groups with numerous unique proteins: 53 for the southern strain PCM2 of L. orientalis and 97 for the strain PCM3 of L. martiniquensis. Some of these proteins were related to virulence, drug resistance, drug target, and stress response, which could be targeted for further experimental characterization. Therefore, the findings could initiate further genetic and population genomic investigation, and the close monitoring of L. orientalis and L. martiniquensis in Thailand and neighboring regions. Abstract (1) Background: Autochthonous leishmaniasis, a sandfly-borne disease caused by the protozoan parasites Leishmania orientalis (formerly named Leishmania siamensis) and Leishmania martiniquensis, has been reported for immunocompromised and immunocompetent patients in the southern province of Thailand. Apart from the recent genomes of the northern isolates, limited information is known on the emergence and genetics of these parasites. (2) Methods: This study sequenced and compared the genomes of L. orientalis isolate PCM2 and L. martiniquensis isolate PCM3 with those of the northern isolates and other 14 Leishmania species using short-read whole-genome sequencing methods and comparative bioinformatic analyses. (3) Results: The genomes of the southern isolates of L. orientalis and L. martiniquensis were 30.01 Mbp and 32.39 Mbp, and the comparison with the genomes of the northern isolates revealed species-level similarity with a level of genome and proteome variation, suggesting the different strains. Comparative proteome analysis showed six protein groups with 53 unique proteins for the strain PCM2 and 97 for the strain PCM3. Certain proteins were related to virulence, drug resistance, and stress response. (4) Conclusion: Therefore, the findings could indicate the need for more genetic and population genomic investigation, and the close monitoring of L. orientalis and L. martiniquensis in Thailand and neighboring regions.
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Affiliation(s)
- Pornchai Anuntasomboon
- Department of Genetics, Faculty of Science, Kasetsart University, Bangkok 10900, Thailand;
- Omics Center for Agriculture, Bioresources, Food and Health, Kasetsart University, Bangkok 10900, Thailand
| | | | - Sasimanas Unajak
- Department of Biochemistry, Faculty of Science, Kasetsart University, Bangkok 10900, Thailand; (S.U.); (K.C.)
| | - Kiattawee Choowongkomon
- Department of Biochemistry, Faculty of Science, Kasetsart University, Bangkok 10900, Thailand; (S.U.); (K.C.)
| | - Richard Burchmore
- Glasgow Polyomics, College of Medical, Veterinary and Life Sciences, University of Glasgow, Glasgow G12 8QQ, UK;
| | - Saovanee Leelayoova
- Department of Parasitology, Phramongkutklao College of Medicine, Bangkok 10400, Thailand; (S.L.); (M.M.)
| | - Mathirut Mungthin
- Department of Parasitology, Phramongkutklao College of Medicine, Bangkok 10400, Thailand; (S.L.); (M.M.)
| | - Teerasak E-kobon
- Department of Genetics, Faculty of Science, Kasetsart University, Bangkok 10900, Thailand;
- Omics Center for Agriculture, Bioresources, Food and Health, Kasetsart University, Bangkok 10900, Thailand
- Correspondence: ; Tel.: +66-812-85-4672
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12
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Unajak S, Pumchan A, Roytrakul S, Sawatdichaikul O, Areechon N. Novel Vaccine Development for Fish Culture Based on the Multiepitope Concept. Methods Mol Biol 2022; 2411:219-240. [PMID: 34816408 DOI: 10.1007/978-1-0716-1888-2_13] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
For the past several decades, aquaculture all around the world have been retarded by various disease outbreaks caused by many pathogens including parasites, bacteria, and viruses. Apart from being harmful to human health, the emerging diseases also dramatically affect the farm animals such as livestock and aquatic animals. To cope with this problem, one of the effective prophylactic measures is the application of vaccine. However, the traditional vaccines still have some limitations and several drawbacks; thus there is a need for the development of novel advanced vaccine such as chimeric multiepitope vaccine. Based on the current understanding of genomics and immunoproteomics together with the present bioinformatics tools, the researchers can identify the potential targeted epitopes being recognizable by the immune cells. Additionally, another critical point that should be considered for designing the chimeric multiepitope vaccine is the exposure of all those epitopes to the host organism. Thus, selecting an appropriate linker and joining each identified epitope in a suitable site can create the ideal protein structure protruding all the selected epitopes on its surface. Herein, our study would provide the fundamental platform to develop the multiepitope B-cell vaccine for the prevention and control of the aquatic animal disease starting with the epitope prediction until in vivo testing the multiepitope vaccine efficacy.
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Affiliation(s)
- Sasimanas Unajak
- Department of Biochemistry, Faculty of Science, Kasetsart University, Bangkok, Thailand.
| | - Ansaya Pumchan
- Department of Biochemistry, Faculty of Science, Kasetsart University, Bangkok, Thailand
| | - Sittiruk Roytrakul
- Functional Ingredients and Food Innovation Research Group, National Center for Genetic Engineering and Biotechnology, Pathumthani, Thailand
| | - Orathai Sawatdichaikul
- Institute of Food Research and Product Development, Kasetsart University, Bangkok, Thailand
| | - Nontawith Areechon
- Department of Aquaculture, Faculty of Fisheries, Kasetsart University, Bangkok, Thailand
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13
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Printrakoon C, Unajak S, Signorelli JH. Identification and Distribution of Wedge Clams (Donacidae: Bivalvia) in Thailand by Geometric Morphometric and Molecular Analysis. Zool Stud 2022; 61:e82. [PMID: 37034829 PMCID: PMC10076522 DOI: 10.6620/zs.2022.61-82] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2021] [Accepted: 10/07/2022] [Indexed: 04/11/2023]
Abstract
The phylogenetic relationship of living Thai Donacidae was herein studied. Two methodologies, geometric morphometrics (GM) and genetic analysis of COI sequences, were combined and applied to identify the valid taxa and explain biodiversity and the distribution pattern in this family. A total of 587 living specimens were tested to analyze the shape and size patterns by Elliptic Fourier Analysis (EFA). Shell identification and GenBank sequences were added to construct the phylogenetic relationship and haplotype network. Centroid size was used to identify the specimens to the subgenus level. Donax (Hecuba) scortum, was easily distinguished from other species by Principal Component analysis (PCA) of shell size and shape. Donax (Dentilatona) incarnatus and Donax (Deltachion) semisulcatus semisulcatus were identified using Canonical Variates Analysis (CVA). Pairwise comparison of EFA was used for species level recognition, particularly shape overlap was observed for medium and small shell size. Based on genetic distance and haplotype network of COI sequences, Donax (Latona) faba and D. (Latona) solidus could be grouped in the same clade. Intraspecific and interspecific genetic data variation of some common species in different geographical localities of Thailand was observed. Three distribution patterns of Donax species were observed along the two-marine system of Thailand.
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Affiliation(s)
- Cheewarat Printrakoon
- Animal Systematics and Ecology Specialty Unit (ASESRU), Department of Zoology, Faculty of Science, Kasetsart University, 50 Ngam Wong Wan Road, Chatuchak, Bangkok 10900, Thailand. E-mail: , (Printrakoon)
| | - Sasimanas Unajak
- Department of Biochemistry, Faculty of Science, Kasetsart University, 50 Ngam Wong Wan Road, Chatuchak, Bangkok 10900, Thailand. E-mail: (Unajak)
| | - Javier H Signorelli
- Instituto de Biología de Organismos Marinos, IBIOMAR (CCT CONICET-CENPAT), Bvd. Brown 2915, U9120ACD Puerto Madryn, Chubut, Argentina. E-mail: (Signorelli)
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14
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Laurchan P, E-Kobon T, Srisapoome P, Unajak S, Sinthuvanich C. Molecular Characterization and Cross-Allergenicity of Tropomyosin from Freshwater Crustaceans. J Agric Food Chem 2021; 69:8247-8256. [PMID: 34255496 DOI: 10.1021/acs.jafc.1c00934] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
Tropomyosin is a major allergen responsible for cross-allergenicity in a number of shellfish species. Although extensively characterized in marine crustaceans, the information of tropomyosin is limited to a few freshwater crustacean species. As a result, more cross-reactivity evidence and information of tropomyosin at the molecular level are required for the detection of freshwater crustaceans in the food industry. In this study, we explored tropomyosin allergenicity in four freshwater crustacean species: prawn (Macrobrachium rosenbergii and Macrobrachium lanchesteri) and crayfish (Procambarus clarkii and Cherax quadricarinatus). Immunoblotting, liquid chromatography-tandem mass spectrometry, and immunoprecipitation studies indicated that tropomyosin was recognized by the sera's IgE of crustacean-allergic volunteers. Cloning and characterization of nucleotide sequences of tropomyosin cDNA from M. lanchesteri and C. quadricarinatus revealed highly conserved amino acid sequences with other crustaceans. This study emphasized the role of tropomyosin as a universal marker for the detection of both freshwater and marine crustaceans in the food industry.
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Affiliation(s)
- Panyarat Laurchan
- Department of Biochemistry, Faculty of Science, Kasetsart University, Bangkok 19000, Thailand
| | - Teerasak E-Kobon
- Department of Genetics, Faculty of Science, Kasetsart University, Bangkok 19000, Thailand
| | - Prapansak Srisapoome
- Department of Aquaculture, Faculty of Fisheries, Kasetsart University, Bangkok 19000, Thailand
| | - Sasimanas Unajak
- Department of Biochemistry, Faculty of Science, Kasetsart University, Bangkok 19000, Thailand
| | - Chomdao Sinthuvanich
- Department of Biochemistry, Faculty of Science, Kasetsart University, Bangkok 19000, Thailand
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15
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Abstract
Herein, we report the use of surface-modified halloysite as an effective oral vaccine carrier for Nile tilapia.
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Affiliation(s)
- Ansaya Pumchan
- Department of Biochemistry
- Faculty of Science
- Kasetsart University
- Bangkok 10900
- Thailand
| | - Orrapa Cheycharoen
- Department of Chemistry
- Faculty of Science
- Kasetsart University
- Bangkok 10900
- Thailand
| | - Sasimanas Unajak
- Department of Biochemistry
- Faculty of Science
- Kasetsart University
- Bangkok 10900
- Thailand
| | - Chaiya Prasittichai
- Department of Chemistry
- Faculty of Science
- Kasetsart University
- Bangkok 10900
- Thailand
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16
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Kuitio C, Rasri N, Kiriwan D, Unajak S, Choowongkomon K. Development of a biosensor from aptamers for detection of the porcine reproductive and respiratory syndrome virus. J Vet Sci 2020; 21:e79. [PMID: 33016024 PMCID: PMC7533388 DOI: 10.4142/jvs.2020.21.e79] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2020] [Revised: 08/11/2020] [Accepted: 08/18/2020] [Indexed: 01/04/2023] Open
Abstract
BACKGROUND Recently, the pork industry of Thailand faced an epidemic of highly virulent strains of porcine reproductive and respiratory syndrome virus (PRRSV), which spread throughout Southeast Asia, including the Lao People's Democratic Republic and Cambodia. Hence, the rapid and on-site screening of infected pigs on a farm is essential. OBJECTIVES To develop the new aptamer as a biosensor for detection PRRSV which are rapid and on-site screening of infected pig. METHODS New aptamers against PRSSV were identified using the combined techniques of capillary electrophoresis, colorimetric assay by gold nanoparticles, and quartz crystal microbalance (QCM). RESULTS Thirty-six candidate aptamers of the PRRSV were identified from the systematic evolution of ligands by exponential enrichment (SELEX) by capillary electrophoresis. Only 8 out of 36 aptamers could bind to the PRSSV, as shown in a colorimetric assay. Of the 8 aptamers tested, only the 1F aptamer could bind specifically to the PRSSV when presented with the classical swine fever virus and a pseudo rabies virus. The QCM was used to confirm the specificity and sensitivity of the 1F aptamer with a detection limit of 1.87 × 1010 particles. CONCLUSIONS SELEX screening of the aptamer equipped with capillary electrophoresis potentially revealed promising candidates for detecting the PRRSV. The 1F aptamer exhibited the highest specificity and selectivity against the PRRSV. These findings suggest that 1F is a promising aptamer for further developing a novel PRRSV rapid detection kit.
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Affiliation(s)
- Chakpetch Kuitio
- Genetic Engineering Interdisciplinary Program, Graduate School, Kasetsart University, Bangkok 10900, Thailand
| | - Natchaya Rasri
- Department of Biochemistry, Faculty of Science, Kasetsart University, Bangkok 10900, Thailand
| | - Duangnapa Kiriwan
- Genetic Engineering Interdisciplinary Program, Graduate School, Kasetsart University, Bangkok 10900, Thailand
| | - Sasimanas Unajak
- Department of Biochemistry, Faculty of Science, Kasetsart University, Bangkok 10900, Thailand
| | - Kiattawee Choowongkomon
- Department of Biochemistry, Faculty of Science, Kasetsart University, Bangkok 10900, Thailand.,Center for Advanced Studies in Nanotechnology for Chemical, Food and Agricultural Industries, KU Institute for Advanced Studies, Kasetsart University, Bangkok 10900, Thailand.
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17
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Kayansamruaj P, Areechon N, Unajak S. Development of fish vaccine in Southeast Asia: A challenge for the sustainability of SE Asia aquaculture. Fish Shellfish Immunol 2020; 103:73-87. [PMID: 32335313 DOI: 10.1016/j.fsi.2020.04.031] [Citation(s) in RCA: 26] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/25/2019] [Revised: 02/23/2020] [Accepted: 04/15/2020] [Indexed: 05/08/2023]
Abstract
Southeast (SE) Asia plays an important role in global food security as this region has been regarded as one of the major producers of aquaculture product and, to date, freshwater fish accounted for one-third of the total aquaculture in SE Asia. The intensification of freshwater farming corresponding to increase of consumer demands has inevitably led to the emergence and re-emergence of diseases causing tremendous economic loss in the region. Nile tilapia (Oreochromis niloticus) and striped catfish (Pangasianodon hypophthalmus), the major freshwater fish species of SE Asia, have been reported susceptible to several bacterial pathogens, e.g. Streptococcus agalactiae, Edwardsiella ictalurid and Flavobacterium columnare. Since only a limited number of vaccines being registered and marketed, these pathogenic organisms still represent a severe threat to aquaculture industry in SE Asia. However, there is profound advancement in the understanding of disease epidemiology, pathogenic mechanisms, teleost mucosal immunity and vaccine delivery system over the last few years. This review aimed to summarize those recent findings which hopefully can provide novel insight into the future development of suitable vaccine and vaccination regime against bacterial infection in SE Asia region.
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Affiliation(s)
- Pattanapon Kayansamruaj
- Department of Aquaculture, Faculty of Fisheries, Kasetsart University, 10900, Chatuchak, Bangkok, Thailand.
| | - Nontawith Areechon
- Department of Aquaculture, Faculty of Fisheries, Kasetsart University, 10900, Chatuchak, Bangkok, Thailand
| | - Sasimanas Unajak
- Department of Biochemistry, Faculty of Science, Kasetsart University, 10900, Chatuchak, Bangkok, Thailand.
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18
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Pumchan A, Krobthong S, Roytrakul S, Sawatdichaikul O, Kondo H, Hirono I, Areechon N, Unajak S. Novel Chimeric Multiepitope Vaccine for Streptococcosis Disease in Nile Tilapia (Oreochromis niloticus Linn.). Sci Rep 2020; 10:603. [PMID: 31953479 PMCID: PMC6969146 DOI: 10.1038/s41598-019-57283-0] [Citation(s) in RCA: 26] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2019] [Accepted: 12/18/2019] [Indexed: 12/21/2022] Open
Abstract
Streptococcus agalactiae is a causative agent of streptococcosis disease in various fish species, including Nile tilapia (Oreochromis niloticus Linn.). Vaccination is an effective disease prevention and control method, but limitations remain for protecting against catastrophic mortality of fish infected with different strains of streptococci. Immunoproteomics analysis of S. agalactiae was used to identify antigenic proteins and construct a chimeric multiepitope vaccine. Epitopes from five antigenic proteins were shuffled in five helices of a flavodoxin backbone, and in silico analysis predicted a suitable RNA and protein structure for protein expression. 45F2 and 42E2 were identified as the best candidates for a chimeric multiepitope vaccine. Recombinant plasmids were constructed to produce a recombinant protein vaccine and DNA vaccine system. Overexpressed proteins were determined to be 30 kDa and 25 kDa in the E. coli and TK1 systems, respectively. The efficacy of the chimeric multiepitope construct as a recombinant protein vaccine and DNA vaccine was evaluated in Nile tilapia, followed by S. agalactiae challenge at 1 × 107 CFU/mL. Relative percentage survival (RPS) and cumulative mortality were recorded at approximately 57-76% and 17-30%, respectively. These chimeric multiepitope vaccines should be applied in streptococcosis disease control and developed into a multivalent vaccine to control multiple diseases.
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Affiliation(s)
- Ansaya Pumchan
- Department of Biochemistry, Faculty of Science, Kasetsart University, 50 Ngam Wong Wan, Chatuchak, Bangkok, 10900, Thailand
| | - Sucheewin Krobthong
- Proteomics Laboratory, Genome Institutes, National Center for Genetic Engineering and Biotechnology, Pathumthani, 12120, Thailand
| | - Sittiruk Roytrakul
- Proteomics Laboratory, Genome Institutes, National Center for Genetic Engineering and Biotechnology, Pathumthani, 12120, Thailand
| | - Orathai Sawatdichaikul
- Department of Nutrition and Health, Institute of Food Research and Product Development, Kasetsart University, 50 Ngam Wong Wan, Chatuchak, Bangkok, 10900, Thailand
| | - Hidehiro Kondo
- Graduate School of Marine Science and Technology, Tokyo University of Marine Science and Technology, Konan 4-5-7, Minato-KU, Tokyo, 108-8477, Japan
| | - Ikuo Hirono
- Graduate School of Marine Science and Technology, Tokyo University of Marine Science and Technology, Konan 4-5-7, Minato-KU, Tokyo, 108-8477, Japan
| | - Nontawith Areechon
- Department of Aquaculture, Faculty of Fisheries, Kasetsart University, 50 Ngam Wong Wan Road, Chatuchak, Bangkok, 10900, Thailand
| | - Sasimanas Unajak
- Department of Biochemistry, Faculty of Science, Kasetsart University, 50 Ngam Wong Wan, Chatuchak, Bangkok, 10900, Thailand.
- Omics Center for Agriculture, Bioresources, Food and Health, Kasetsart University (OmiKU), Kasetsart University, 50 Ngam Wong Wan Road, Chatuchak, Bangkok, 10900, Thailand.
- Center for Advanced Studies for Agriculture and Food, KU Institute for Advanced Studies, Kasetsart University, (CASAF, NRU-KU, Thailand), Bangkok, 10900, Thailand.
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19
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Amphan S, Unajak S, Printrakoon C, Areechon N. Feeding-regimen of β-glucan to enhance innate immunity and disease resistance of Nile tilapia, Oreochromis niloticus Linn., against Aeromonas hydrophila and Flavobacterium columnare. Fish Shellfish Immunol 2019; 87:120-128. [PMID: 30597253 DOI: 10.1016/j.fsi.2018.12.062] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/24/2018] [Revised: 12/03/2018] [Accepted: 12/25/2018] [Indexed: 06/09/2023]
Abstract
β-glucan is one of the most potent immunostimulants enhancing innate immune activity, disease resistance and growth performance of many aquatic organisms. Nevertheless, there are few studies on feeding regimens of β-glucan that correlate to immune response and disease resistance and are important considerations for practical β-glucan utilization. Thus, the effect of β-glucan and feeding duration on innate immunity and disease resistance was investigated to establish an optimal feeding regimen of β-glucan for Nile tilapia (Oreochromis niloticus Linn.). A variety of β-glucan feeding regimens were evaluated, including: i) feeding for 2 weeks, ii) feeding for 4 weeks, and iii) feeding every-other-week, with the objective of establishing the optimal feeding regimen that enhanced innate immunity and disease resistance. Innate immunity parameters were determined every week for eight weeks. Alternative complement activity of all β-glucan groups was significantly (P < 0.05) increased at the end of the first week, and then fluctuated but was not significantly (P > 0.05) different to the control until the end of the trial. Increased lysozyme activity was only detected at the end of the second week in all β-glucan-treated groups, and then decreased to the control level during most of the sampling periods. Phagocytosis percentage was increased and prolonged by β-glucan feeding, while the phagocytic index was not. Apart from innate immunity, β-glucan-fed fish demonstrated enhanced disease resistance against Aeromonas hydrophila and Flavobacterium columnare challenge at only the end of the fourth week of the trial. The growth performance of β-glucan-fed fish was not significantly (P > 0.05) different among the experimental groups and control. Taken together, the result indicated that all β-glucan-feeding regimens resulted in quite similar outcomes with respect to innate immunity stimulation, disease resistance and growth performance. This novel result suggests that an every-other-week regimen is the optimal choice for Nile tilapia cultivation as an economic cost saving benefit. This is the first study to determine the optimal feeding-regimen of β-glucan to enhance innate immunity and increase resistance to infection by pathogenic bacteria in Nile tilapia.
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Affiliation(s)
- Soraat Amphan
- Department of Zoology, Faculty of Science, Kasetsart University, 50 Ngam Wong Wan Road, Chatuchak, Bangkok, 10900, Thailand
| | - Sasimanas Unajak
- Department of Biochemistry, Faculty of Science, Kasetsart University, 50 Ngam Wong Wan Road, Chatuchak, Bangkok, 10900, Thailand; Biochemical Research Unit for Feed Utilization Assessment, Faculty of Science, Kasetsart University, Bangkok, 10900, Thailand
| | - Cheewarat Printrakoon
- Department of Zoology, Faculty of Science, Kasetsart University, 50 Ngam Wong Wan Road, Chatuchak, Bangkok, 10900, Thailand.
| | - Nontawith Areechon
- Department of Aquaculture, Faculty of Fisheries, Kasetsart University, 50 Ngam Wong Wan Road, Chatuchak, Bangkok, 10900, Thailand.
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Kayansamruaj P, Soontara C, Unajak S, Dong HT, Rodkhum C, Kondo H, Hirono I, Areechon N. Comparative genomics inferred two distinct populations of piscine pathogenic Streptococcus agalactiae, serotype Ia ST7 and serotype III ST283, in Thailand and Vietnam. Genomics 2018; 111:1657-1667. [PMID: 30453061 DOI: 10.1016/j.ygeno.2018.11.016] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2018] [Revised: 11/06/2018] [Accepted: 11/13/2018] [Indexed: 11/16/2022]
Abstract
The genomes of Streptococcus agalactiae (group B streptococcus; GBS) collected from diseased fish in Thailand and Vietnam over a nine-year period (2008-2016) were sequenced and compared (n = 21). Based on capsular serotype and multilocus sequence typing (MLST), GBS isolates are divided into 2 groups comprised of i) serotype Ia; sequence type (ST)7 and ii) serotype III; ST283. Population structure inferred by core genome (cg)MLST and Bayesian clustering analysis also strongly indicated distribution of two GBS populations in both Thailand and Vietnam. Deep phylogenetic analysis implied by CRISPR array's spacer diversity was able to cluster GBS isolates according to their temporal and geographic origins, though ST7 has varying CRISPR1-spacer profiles when compared to ST283 strains. Based on overall genotypic features, Thai ST283 strains were closely related to the Singaporean ST283 strain causing foodborne illness in humans in 2015, thus, signifying zoonotic potential of this GBS population in the country.
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Affiliation(s)
| | - Chayanit Soontara
- Department of Aquaculture, Faculty of Fisheries, Kasetsart University, Bangkok, Thailand
| | - Sasimanas Unajak
- Department of Biochemistry, Faculty of Science, Kasetsart University, Bangkok, Thailand
| | - Ha Thanh Dong
- Department of Science, Faculty of Science and Technology, Suan Sunandha Rajabhat University, Bangkok, Thailand
| | - Channarong Rodkhum
- Department of Veterinary Microbiology, Faculty of Veterinary Science, Chulalongkorn University, Bangkok, Thailand; Research Unit of Fish Infectious Diseases (RU-FIDs), Faculty of Veterinary Science, Chulalongkorn University, Bangkok, Thailand
| | - Hidehiro Kondo
- Laboratory of Genome Science, Tokyo University of Marine Science and Technology, Tokyo, Japan
| | - Ikuo Hirono
- Laboratory of Genome Science, Tokyo University of Marine Science and Technology, Tokyo, Japan
| | - Nontawith Areechon
- Department of Aquaculture, Faculty of Fisheries, Kasetsart University, Bangkok, Thailand
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21
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Lapbenjakul S, Thapana W, Twilprawat P, Muangmai N, Kanchanaketu T, Temsiripong Y, Unajak S, Peyachoknagul S, Srikulnath K. High genetic diversity and demographic history of captive Siamese and Saltwater crocodiles suggest the first step toward the establishment of a breeding and reintroduction program in Thailand. PLoS One 2017; 12:e0184526. [PMID: 28953895 PMCID: PMC5617146 DOI: 10.1371/journal.pone.0184526] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2017] [Accepted: 08/25/2017] [Indexed: 01/08/2023] Open
Abstract
The Siamese crocodile (Crocodylus siamensis) and Saltwater crocodile (C. porosus) are two of the most endangered animals in Thailand. Their numbers have been reduced severely by hunting and habitat fragmentation. A reintroduction plan involving captive-bred populations that are used commercially is important and necessary as a conservation strategy to aid in the recovery of wild populations. Here, the genetic diversity and population structure of 69 individual crocodiles, mostly members of captive populations, were analyzed using both mitochondrial D-loop DNA and microsatellite markers. The overall haplotype diversity was 0.924–0.971 and the mean expected heterozygosity across 22 microsatellite loci was 0.578–0.701 for the two species. This agreed with the star-like shaped topology of the haplotype network, which suggests a high level of genetic diversity. The mean ratio of the number of alleles to the allelic range (M ratio) for the populations of both species was considerably lower than the threshold of 0.68, which was interpreted as indicative of a historical genetic bottleneck. Microsatellite markers provided evidence of introgression for three individual crocodiles, which suggest that hybridization might have occurred between C. siamensis and C. porosus. D-loop sequence analysis detected bi-directional hybridization between male and female individuals of the parent species. Therefore, identification of genetically non-hybrid and hybrid individuals is important for long-term conservation management. Relatedness values were low within the captive populations, which supported their genetic integrity and the viability of a breeding and reintroduction management plan. This work constitutes the first step in establishing an appropriate source population from a scientifically managed perspective for an in situ/ex situ conservation program and reintroduction of crocodile individuals to the wild in Thailand.
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Grants
- Kasetsart University Research and Development Institute (KURDI)
- the Graduate School, Kasetsart University
- Professor Motivation (PM), Faculty of Science, Kasetsart University
- Special Track Staff (STS), Faculty of Science, Kasetsart University
- Science Research Fund (ScRF), Faculty of Science, Kasetsart University
- the Center for Advanced Studies in Tropical Natural Resources, National Research University-Kasetsart University
- The graduate scholarship provided by the National Research Council of Thailand (NRCT) as of fiscal year 2017, the Graduate School, Kasetsart University
- the Science Achievement Scholarship of Thailand (SAST), the Office of the Higher Education Commission, Thailand
- the Center of Excellence on Agricultural Biotechnology, Science and Technology Postgraduate Education and Research Development Office, Office of Higher Education Commission, Ministry of Education
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Affiliation(s)
- Sorravis Lapbenjakul
- Laboratory of Animal Cytogenetics and Comparative Genomics (ACCG), Department of Genetics, Faculty of Science, Kasetsart University, Chatuchak, Bangkok, Thailand
- Animal Breeding and Genetics Consortium of Kasetsart University (ABG-KU), Kasetsart University, Bangkok, Thailand
| | - Watcharaporn Thapana
- Laboratory of Animal Cytogenetics and Comparative Genomics (ACCG), Department of Genetics, Faculty of Science, Kasetsart University, Chatuchak, Bangkok, Thailand
- Animal Breeding and Genetics Consortium of Kasetsart University (ABG-KU), Kasetsart University, Bangkok, Thailand
- Center for Advanced Studies in Tropical Natural Resources, National Research University-Kasetsart University (CASTNAR, NRU-KU), Kasetsart University, Bangkok, Thailand
| | - Panupon Twilprawat
- Laboratory of Animal Cytogenetics and Comparative Genomics (ACCG), Department of Genetics, Faculty of Science, Kasetsart University, Chatuchak, Bangkok, Thailand
| | - Narongrit Muangmai
- Animal Breeding and Genetics Consortium of Kasetsart University (ABG-KU), Kasetsart University, Bangkok, Thailand
- Department of Fishery Biology, Faculty of Fisheries, Kasetsart University, Bangkok, Thailand
| | - Thiti Kanchanaketu
- Division of Genetics, Department of Science, Faculty of Liberal Arts and Science, Kasetsart University (Kamphaeng Saen Campus), Kamphaeng Saen, Nakhon Pathom, Thailand
| | | | - Sasimanas Unajak
- Department of Biochemistry, Faculty of Science, Kasetsart University, Bangkok, Thailand
| | - Surin Peyachoknagul
- Laboratory of Animal Cytogenetics and Comparative Genomics (ACCG), Department of Genetics, Faculty of Science, Kasetsart University, Chatuchak, Bangkok, Thailand
- Center for Advanced Studies in Tropical Natural Resources, National Research University-Kasetsart University (CASTNAR, NRU-KU), Kasetsart University, Bangkok, Thailand
- Department of Biology, Faculty of Science, Naresuan University, Muang Phitsanulok, Phitsanulok, Thailand
| | - Kornsorn Srikulnath
- Laboratory of Animal Cytogenetics and Comparative Genomics (ACCG), Department of Genetics, Faculty of Science, Kasetsart University, Chatuchak, Bangkok, Thailand
- Animal Breeding and Genetics Consortium of Kasetsart University (ABG-KU), Kasetsart University, Bangkok, Thailand
- Center for Advanced Studies in Tropical Natural Resources, National Research University-Kasetsart University (CASTNAR, NRU-KU), Kasetsart University, Bangkok, Thailand
- Center of Excellence on Agricultural Biotechnology: (AG-BIO/PERDO-CHE), Bangkok, Thailand
- * E-mail:
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Kannika K, Pisuttharachai D, Srisapoome P, Wongtavatchai J, Kondo H, Hirono I, Unajak S, Areechon N. Molecular serotyping, virulence gene profiling and pathogenicity of
Streptococcus agalactiae
isolated from tilapia farms in Thailand by multiplex
PCR. J Appl Microbiol 2017; 122:1497-1507. [DOI: 10.1111/jam.13447] [Citation(s) in RCA: 39] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2016] [Revised: 02/08/2017] [Accepted: 03/03/2017] [Indexed: 12/23/2022]
Affiliation(s)
- K. Kannika
- Department of Aquaculture Faculty of Fisheries Kasetsart University Bangkok Thailand
- Center for Advanced Studies for Agriculture and Food Kasetsart University Institute for Advanced Studies Kasetsart University Bangkok Thailand
| | - D. Pisuttharachai
- Fishery Science and Aquatic Resources, Faculty of Agricultural Technology King Mongkut's Institute of Technology Ladkrabang, Prince of Chumphon Campus Chumphon Thailand
| | - P. Srisapoome
- Department of Aquaculture Faculty of Fisheries Kasetsart University Bangkok Thailand
| | - J. Wongtavatchai
- Department of Veterinary Medicine Faculty of Veterinary Science Chulalongkorn University Bangkok Thailand
| | - H. Kondo
- Graduate School of Marine Science and Technology Tokyo University of Marine Science and Technology Tokyo Japan
| | - I. Hirono
- Graduate School of Marine Science and Technology Tokyo University of Marine Science and Technology Tokyo Japan
| | - S. Unajak
- Center for Advanced Studies for Agriculture and Food Kasetsart University Institute for Advanced Studies Kasetsart University Bangkok Thailand
- Department of Biochemistry Faculty of Science Kasetsart University Bangkok Thailand
| | - N. Areechon
- Department of Aquaculture Faculty of Fisheries Kasetsart University Bangkok Thailand
- Center for Advanced Studies for Agriculture and Food Kasetsart University Institute for Advanced Studies Kasetsart University Bangkok Thailand
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Truong Thy HT, Tri NN, Quy OM, Fotedar R, Kannika K, Unajak S, Areechon N. Effects of the dietary supplementation of mixed probiotic spores of Bacillus amyloliquefaciens 54A, and Bacillus pumilus 47B on growth, innate immunity and stress responses of striped catfish (Pangasianodon hypophthalmus). Fish Shellfish Immunol 2017; 60:391-399. [PMID: 27836719 DOI: 10.1016/j.fsi.2016.11.016] [Citation(s) in RCA: 31] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/30/2016] [Revised: 10/24/2016] [Accepted: 11/06/2016] [Indexed: 06/06/2023]
Abstract
The study used the mixed probiotics of Bacillus amyloliquefaciens 54A and B. pumilus 47B isolated from striped catfish (Pangasianodon hypophthalmus) intestine aiming to stimulate growth performance, innate immunity, stress tolerance of striped catfish. The average weight gain (AWG), specific growth rate (SGR), and feed conversion ratio (FCR) were analyzed after fish were fed the mixture of probiotics (B. amyloliquefaciens 54A and B. pumilus 47B) at concentrations of 1 × 108, 3 × 108, and 5 × 108 CFU g-1 feed for 90 days. Immunity parameters, survival rate of fish challenged with Edwardsiella ictaluri and ammonia tolerance were also investigated. The amounts of B. amyloliquefaciens and B. pumilus were counted and identified by specific primer pairs of Ba1-F/Ba1-R, and 16-F/Bpu-R to confirm the presence of probiotics in fish intestine. The AWG (476.6 ± 7.81 g fish-1) of fish fed probiotics at 5 × 108 CFU g-1 was significant higher than the control (390 ± 25.7 g fish-1) after 90 days of feeding, but there was no significant (P > 0.05) effect of probiotics on FCR and SGR. Fish fed diet containing probiotics at 5 × 108 CFU g-1 also expressed resistance to E. ictaluri infection and higher immune parameters such as phagocytic activity, respiratory bursts, and lysozyme activity than the control. Stress response with ammonia showed significantly lower mortality rate (25%, 20% and 27%) of fish fed probiotics at all three levels of 1, 3 and 5 × 108 CFU g-1 than the fish fed control diet (75%). The study also demonstrated that the probiotics survived in the intestine of striped catfish after 90 days of feeding. Therefore, the dietary supplementation of a mixture of B. amyloliquefaciens and B. pumilus at 5 × 108 CFU g-1 can be used to improve the health and growth rate of striped catfish.
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Affiliation(s)
- Ho Thi Truong Thy
- Department of Aquaculture, Faculty of Fisheries, Linh Trung Ward, Thu Duc District, Nong Lam University, Viet Nam; Department of Aquaculture, Faculty of Fisheries, Kasetsart University, Bangkok 10900, Thailand
| | - Nguyen Nhu Tri
- Department of Aquaculture, Faculty of Fisheries, Linh Trung Ward, Thu Duc District, Nong Lam University, Viet Nam
| | - Ong Moc Quy
- Department of Aquaculture, Faculty of Fisheries, Linh Trung Ward, Thu Duc District, Nong Lam University, Viet Nam
| | - Ravi Fotedar
- Curtin Aquatic Research Laboratory, Department of Environment & Agriculture, Curtin University of Technology, Bentley 6102, WA, Australia
| | - Korntip Kannika
- Division of Fisheries, School of Agricultural and Natural Resources, University of Phayao, Phayao 56000, Thailand
| | - Sasimanas Unajak
- Department of Biochemistry, Faculty of Science, Kasetsart University, Bangkok 10900, Thailand
| | - Nontawith Areechon
- Department of Aquaculture, Faculty of Fisheries, Kasetsart University, Bangkok 10900, Thailand.
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Aeksiri N, Warakulwit C, Hannongbua S, Unajak S, Choowongkomon K. Use of Capillary Electrophoresis to Study the Binding Interaction of Aptamers with Wild-Type, K103N, and Double Mutant (K103N/Y181C) HIV-1 RT : Studying the Binding Interaction of Wild-Type, K103N, and Double Mutant (K103N/Y181C) HIV-1 RT with Aptamers by Performing the Capillary Electrophoresis. Appl Biochem Biotechnol 2016; 182:546-558. [PMID: 27900665 DOI: 10.1007/s12010-016-2343-x] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2016] [Accepted: 11/24/2016] [Indexed: 12/22/2022]
Abstract
A number of nucleic acid aptamers with high affinities to human immunodeficiency virus reverse transcriptase (HIV-1 RT) are currently known. They can potentially be developed as broad-spectrum antiviral drugs, but there is little known about their binding interaction with mutant HIV-1 RT. Therefore, we utilized non-equilibrium capillary electrophoresis of equilibrium mixture (NECEEM) to study the interaction of three HIV-1 RTs (wild type, K103N, and double mutant (K103N/Y181C)) with RT1t49 and RT12 aptamers. This approach was used to study and evaluate the K d values of these molecules. The results showed that the K d values of the tested aptamers were lower than that of the DNA substrate. The results also pointed out that RT1t49 could bind with all HIV-1 RTs and compete with the DNA substrate at the active site. Moreover, we studied the binding stoichiometry of HIV-1 RT using aptamers as probes. The findings showed evidence of two binding stoichiometries with HIV-1 RT and the RT12 aptamer but only one binding stoichiometry for RT1t49. In addition, RT1t49 could bind specifically with the wild-type, K103N, and double mutants in Escherichia coli lysate. This result also indicated that the aptamer could detect HIV-1 RT in the presence of E. coli lysate.
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Affiliation(s)
- Niran Aeksiri
- Interdisciplinary Program in Genetic Engineering, Graduate School, Kasetsart University, Chatuchak, Bangkok, 10900, Thailand
- Department of Agricultural Science, Faculty of Agriculture, Natural Resources and Environment, Naresuan University, Phitsanulok, 65000, Thailand
| | - Chompunuch Warakulwit
- Department of Chemistry, Faculty of Science, Kasetsart University, Chatuchak, Bangkok, 10900, Thailand
| | - Supa Hannongbua
- Department of Chemistry, Faculty of Science, Kasetsart University, Chatuchak, Bangkok, 10900, Thailand
| | - Sasimanas Unajak
- Department of Biochemistry, Faculty of Science, Kasetsart University, Chatuchak, Bangkok, 10900, Thailand
| | - Kiattawee Choowongkomon
- Interdisciplinary Program in Genetic Engineering, Graduate School, Kasetsart University, Chatuchak, Bangkok, 10900, Thailand.
- Department of Biochemistry, Faculty of Science, Kasetsart University, Chatuchak, Bangkok, 10900, Thailand.
- Center for Advanced Studies in Tropical Natural Resources, NRU-KU, Kasetsart University, Chatuchak, Bangkok, 10900, Thailand.
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25
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Unajak S, Pholmanee N, Songtawee N, Srikulnath K, Srisapoome P, Kiataramkul A, Kondo H, Hirono I, Areechon N. Molecular characterization of Galectin-8 from Nile tilapia (Oreochromis niloticus Linn.) and its response to bacterial infection. Mol Immunol 2015; 68:585-96. [DOI: 10.1016/j.molimm.2015.09.012] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2015] [Revised: 09/18/2015] [Accepted: 09/20/2015] [Indexed: 10/22/2022]
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Sujiwattanarat P, Pongsanarakul P, Temsiripong Y, Temsiripong T, Thawornkuno C, Uno Y, Unajak S, Matsuda Y, Choowongkomon K, Srikulnath K. Molecular cloning and characterization of Siamese crocodile (Crocodylus siamensis) copper, zinc superoxide dismutase (CSI-Cu,Zn-SOD) gene. Comp Biochem Physiol A Mol Integr Physiol 2015; 191:187-195. [PMID: 26523498 DOI: 10.1016/j.cbpa.2015.10.028] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2015] [Revised: 10/24/2015] [Accepted: 10/28/2015] [Indexed: 02/07/2023]
Abstract
Superoxide dismutase (SOD, EC 1.15.1.1) is an antioxidant enzyme found in all living cells. It regulates oxidative stress by breaking down superoxide radicals to oxygen and hydrogen peroxide. A gene coding for Cu,Zn-SOD was cloned and characterized from Siamese crocodile (Crocodylus siamensis; CSI). The full-length expressed sequence tag (EST) of this Cu,Zn-SOD gene (designated as CSI-Cu,Zn-SOD) contained 462bp encoding a protein of 154 amino acids without signal peptides, indicated as intracellular CSI-Cu,Zn-SOD. This agreed with the results from the phylogenetic tree, which indicated that CSI-Cu,Zn-SOD belonged to the intracellular Cu,Zn-SOD. Chromosomal location determined that the CSI-Cu,Zn-SOD was localized to the proximal region of the Siamese crocodile chromosome 1p. Several highly conserved motifs, two conserved signature sequences (GFHVHEFGDNT and GNAGGRLACGVI), and conserved amino acid residues for binding copper and zinc (His(47), His(49), His(64), His(72), His(81), Asp(84), and His(120)) were also identified in CSI-Cu,Zn-SOD. Real-time PCR analysis showed that CSI-Cu,Zn-SOD mRNA was expressed in all the tissues examined (liver, pancreas, lung, kidney, heart, and whole blood), which suggests a constitutively expressed gene in these tissues. Expression of the gene in Escherichia coli cells followed by purification yielded a recombinant CSI-Cu,Zn-SOD, with Km and Vmax values of 6.075mM xanthine and 1.4×10(-3)mmolmin(-1)mg(-1), respectively. This Vmax value was 40 times lower than native Cu,Zn-SOD (56×10(-3)mmolmin(-1)mg(-1)), extracted from crocodile erythrocytes. This suggests that cofactors, protein folding properties, or post-translational modifications were lost during the protein purification process, leading to a reduction in the rate of enzyme activity in bacterial expression of CSI-Cu,Zn-SOD.
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Affiliation(s)
- Penporn Sujiwattanarat
- Department of Biochemistry, Faculty of Science, Kasetsart University, 50 Ngamwongwan, Chatuchak, Bangkok 10900, Thailand
| | - Parinya Pongsanarakul
- Department of Biochemistry, Faculty of Science, Kasetsart University, 50 Ngamwongwan, Chatuchak, Bangkok 10900, Thailand
| | | | | | - Charin Thawornkuno
- Department of Molecular Tropical Medicine and Genetics, Faculty of Tropical Medicine, Mahidol University, 420/6 Ratchawithi, Ratchathewi, Bangkok 10400, Thailand
| | - Yoshinobu Uno
- Laboratory of Animal Genetics, Department of Applied Molecular Biosciences, Graduate School of Bioagricultural Sciences, Nagoya University, Furo-cho, Chikusa-ku, Nagoya 464-8601, Japan
| | - Sasimanas Unajak
- Department of Biochemistry, Faculty of Science, Kasetsart University, 50 Ngamwongwan, Chatuchak, Bangkok 10900, Thailand
| | - Yoichi Matsuda
- Laboratory of Animal Genetics, Department of Applied Molecular Biosciences, Graduate School of Bioagricultural Sciences, Nagoya University, Furo-cho, Chikusa-ku, Nagoya 464-8601, Japan
| | - Kiattawee Choowongkomon
- Department of Biochemistry, Faculty of Science, Kasetsart University, 50 Ngamwongwan, Chatuchak, Bangkok 10900, Thailand; Center for Advanced Studies in Tropical Natural Resources, National Research University-Kasetsart University (CASTNAR, NRU-KU, Thailand), Kasetsart University, Bangkok 10900, Thailand.
| | - Kornsorn Srikulnath
- Laboratory of Animal Genetics, Department of Applied Molecular Biosciences, Graduate School of Bioagricultural Sciences, Nagoya University, Furo-cho, Chikusa-ku, Nagoya 464-8601, Japan; Center for Advanced Studies in Tropical Natural Resources, National Research University-Kasetsart University (CASTNAR, NRU-KU, Thailand), Kasetsart University, Bangkok 10900, Thailand; Laboratory of Animal Cytogenetics and Comparative Genomics, Department of Genetics, Faculty of Science, Kasetsart University, 50 Ngamwongwan, Chatuchak, Bangkok 10900, Thailand.
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27
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Unajak S, Aroonluke S, Promboon A. An active recombinant cocoonase from the silkworm Bombyx mori: bleaching, degumming and sericin degrading activities. J Sci Food Agric 2015; 95:1179-1189. [PMID: 25042939 DOI: 10.1002/jsfa.6806] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/21/2014] [Revised: 06/29/2014] [Accepted: 06/30/2014] [Indexed: 06/03/2023]
Abstract
BACKGROUND Cocoonase is a serine protease produced by silk moths and used for softening the cocoons so that they can escape. Degumming is one of the important steps in silk processing. This research aimed to produce an active recombinant Bombyx mori cocoonase (BmCoc) for the silk degumming process. RESULTS A recombinant BmCoc was successfully expressed in a Pichia pastoris system. The purified enzyme showed specific activity of 227 U mg(-1) protein, 2.4-fold purification, 95% yield and a molecular weight of 26 kDa. The enzyme exhibited optimal temperature at 40 °C and optimal pH at 8, and showed thermal stability at 25-45 °C and pH stability at 5-9. The recombinant enzyme exhibited sericin degumming ability and color bleaching characteristics, and did not affect the fibroin fiber. The enzyme also degraded sericin substrate with a product size about 30-70 kDa. CONCLUSION In this study, we successfully produced the active recombinant BmCoc in P. pastoris with promising functions for the Thai silk degumming process, which includes degumming, sericin degrading and color bleaching activities. Our data clearly indicated that the recombinant enzyme had proteolytic activity on sericin but not on fibroin proteins. The recombinant BmCoc has proven to be suitable for numerous applications in the silk industry.
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Affiliation(s)
- Sasimanas Unajak
- Department of Biochemistry, Faculty of Science, Kasetsart University, Bangkok, Thailand; Interdisciplinary Program in Genetic Engineering, The Graduate School, Kasetsart University, Bangkok, Thailand
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28
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Poochai W, Choowongkomon K, Srisapoome P, Unajak S, Areechon N. Characterization and expression analysis of the transferrin gene in Nile tilapia (Oreochromis niloticus) and its upregulation in response to Streptococcus agalactiae infection. Fish Physiol Biochem 2014; 40:1473-1485. [PMID: 24770882 DOI: 10.1007/s10695-014-9941-8] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/31/2013] [Accepted: 04/11/2014] [Indexed: 06/03/2023]
Abstract
In this study, full-length tilapia transferrin (OnTF) isolated from liver cDNA of Nile tilapia (Oreochromis niloticus) was found to have an open reading frame of 2,091-bp encoding 696 amino acid residues. Two additional amino acids: Gly(369) and Gly(370) were observed compared with the reported Nile tilapia transferrin protein sequence. Pre-mature protein has a predicted molecular weight of 78.2 kDa, while mature protein is 73.28 kDa in size. Comparative sequence analysis with transferrin from other species revealed two major putative iron-binding domains designated as the N-lobe and the C-lobe in accordance with the transferrin protein characteristics. The predicted tertiary structure of tilapia transferrin confirmed the presence of iron and anion-binding sites on both lobes that are conserved among transferrins from other species. Quantitative real-time PCR analysis showed significantly higher expression of tilapia transferrin gene in liver than in other tissues (p < 0.05). Transferrin expression in tilapia experimentally infected with 10(6) and 10(8) colony-forming units mL(-1) of Streptococcus agalactiae was significantly upregulated at 24 and 12 h post-infection (hpi), respectively, and decreased afterward. Iron-deficiency in serum of bacterially infected fish was detected at 48 and 24 hpi, respectively. The expression pattern of the transferrin gene and the iron levels of infected tilapia in this study were consistent with the function of transferrin in innate immunity.
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Affiliation(s)
- Watsida Poochai
- Department of Aquaculture, Faculty of Fisheries, Kasetsart University, Bangkok, 10900, Thailand
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Aoki T, Wang HC, Unajak S, Santos MD, Kondo H, Hirono I. Microarray analyses of shrimp immune responses. Mar Biotechnol (NY) 2011; 13:629-638. [PMID: 20393773 DOI: 10.1007/s10126-010-9291-1] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/19/2010] [Accepted: 03/16/2010] [Indexed: 05/29/2023]
Abstract
Shrimp aquaculture is one of the major foodproducing industries in the world. However, it is being impacted by several problems including diseases, antibiotic use, and environmental factors. The extent of the effects of these problems in the immune system of the shrimp at the molecular level is just beginning to be understood. Here, we review the gene expression profile of shrimp in response to some of these problems using the high-throughput microarray analysis, including white spot syndrome virus, yellow head virus, Vibrio spp., peptidoglycan, oxytetracycline, oxolinic acid, salinity, and temperature.
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Affiliation(s)
- Takashi Aoki
- Laboratory of Genome Science, Tokyo University of Marine Science and Technology, Konan 4-5-7 Minato, Tokyo 108-8477, Japan.
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Unajak S, Santos MD, Hikima JI, Jung TS, Kondo H, Hirono I, Aoki T. Molecular characterization, expression and functional analysis of a nuclear oligomerization domain proteins subfamily C (NLRC) in Japanese flounder (Paralichthys olivaceus). Fish Shellfish Immunol 2011; 31:202-211. [PMID: 21642003 DOI: 10.1016/j.fsi.2011.05.007] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/24/2011] [Revised: 04/28/2011] [Accepted: 05/08/2011] [Indexed: 05/30/2023]
Abstract
Pattern recognition receptors (PRRs) are involved in the effective innate defense against several microbes. Here, we identified a nucleotide-oligomerization domain (NOD)-like receptor subfamily C (NLRC) from Japanese flounder (Paralichthys olivaceus). Full-length transcript of JfNLRC is composed of 3976 bp encoding a protein of 1175 deduced amino acid residues. The presence of a signature nucleotide-binding domain (NACHT) and leucine-rich repeated domain (LRR) suggested that the protein is a member of the NLR family. Interestingly, its C-terminus presents an extra PRY/SPRY (B30.2) domain similar to fish in the Trim (finTrim) family. A phylogenic tree of JfNLRC revealed that full-length JfNLRC diverged from the NOD1 and NOD2 clusters, and the NACHT domain in JfNLRC was clustered within the NLRC3 group. Stimulation by formalin-killed Edwardsiella tarda, Streptococcus iniae, and lipopolysaccharide (LPS) showed that the JfNLRC expression was raised a few hours after stimulation, suggesting this novel protein is involved in the immediate response against both Gram-positive and Gram-negative bacteria. Furthermore, the IL-1β mRNA expression level in JfNLRC-over-expressing HINAE cells was significantly increased, when compared to a control, after LPS-stimulation and E. tarda infection. These results suggested that JfNLRC probably induced IL-1β gene expression mediated by LPS-stimulation.
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Affiliation(s)
- Sasimanas Unajak
- Laboratory of Genome Science, Graduate School of Marine Science and Technology, Tokyo University of Marine Science and Technology, Konan 4-5-7, Minato, Tokyo 108-8477, Japan
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Busayarat N, Senapin S, Tonganunt M, Phiwsaiya K, Meemetta W, Unajak S, Jitrapakdee S, Lo CF, Phongdara A. Shrimp laminin receptor binds with capsid proteins of two additional shrimp RNA viruses YHV and IMNV. Fish Shellfish Immunol 2011; 31:66-72. [PMID: 21414409 DOI: 10.1016/j.fsi.2011.03.007] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/09/2010] [Revised: 03/03/2011] [Accepted: 03/07/2011] [Indexed: 05/30/2023]
Abstract
Laminin receptor (Lamr) in shrimp was previously proposed to be a potential receptor protein for Taura syndrome virus (TSV) based on yeast two-hybrid assays. Since shrimp Lamr bound to the VP1 capsid protein of TSV, we were interested to know whether capsid/envelope proteins from other shrimp viruses would also bind to Lamr. Thus, capsid/envelope encoding genes from 5 additional shrimp viruses were examined. These were Penaeus stylirostris densovirus (PstDNV), white spot syndrome virus (WSSV), infectious myonecrosis virus (IMNV), Macrobrachium rosenbergii nodavirus (MrNV), and yellow head virus (YHV). Protein interaction analysis using yeast two-hybrid assay revealed that Lamr specifically interacted with capsid/envelope proteins of RNA viruses IMNV and YHV but not MrNV and not with the capsid/envelope proteins of DNA viruses PstDNV and WSSV. In vitro pull-down assay also confirmed the interaction between Lamr and YHV gp116 envelope protein, and injection of recombinant Lamr (rLamr) protein produced in yeast cells protected shrimp against YHV in laboratory challenge tests.
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Affiliation(s)
- Nattaphon Busayarat
- Center for Genomic and Bioinformatics Research, Faculty of Science, Prince of Songkla University, Songkhla 90112, Thailand
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Sittidilokratna N, Chotwiwatthanakun C, Wijegoonawardane PKM, Unajak S, Boonnad A, Wangnai W, Jitrapakdee S, Cowley JA, Walker PJ. A virulent isolate of yellow head nidovirus contains a deformed envelope glycoprotein gp116. Virology 2009; 384:192-200. [PMID: 19049843 DOI: 10.1016/j.virol.2008.10.042] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2008] [Revised: 10/17/2008] [Accepted: 10/28/2008] [Indexed: 10/21/2022]
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Unajak S, Boonsaeng V, Jitrapakdee S. Isolation and characterization of cDNA encoding Argonaute, a component of RNA silencing in shrimp (Penaeus monodon). Comp Biochem Physiol B Biochem Mol Biol 2006; 145:179-87. [PMID: 16938476 DOI: 10.1016/j.cbpb.2006.07.002] [Citation(s) in RCA: 46] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2006] [Revised: 06/28/2006] [Accepted: 07/06/2006] [Indexed: 11/22/2022]
Abstract
We have identified a cDNA clone that encodes a protein with high sequence homology to Argonaute proteins of mammals and Drosophila melanogaster. The cDNA of Penaeus monodon (Pm Ago) consisted of 3178 nucleotides encoding 939-amino acid residues with a calculated molecular weight of 104 kDa. The primary structure of Pm Ago showed the presence of two signature domains, PAZ and PIWI domains that exhibit highest homology to their counterparts in D. melanogaster. The inferred protein sequence of Pm Ago was 80.8% identical with D. melanogaster and 82.1% identical with Anopheles gambiae Ago proteins. Phylogenetic analysis of Pm Ago with other invertebrate and vertebrate Argonaute proteins suggested that Pm Ago belongs to the Ago1 subfamily that plays crucial roles in stem cell differentiation or RNA interference (RNAi). Semi-quantitative RT-PCR analysis showed that the gene is highly expressed in the lymphoid organ and moderately expressed in intestine, muscle, pleopods and hemocytes. The expression of Pm Ago1 mRNA was 2-3-fold increased during the early period of viral infection but declined rapidly at 30 hour post infection. By contrast, infection of shrimp by a bacterial pathogen, Vibrio harveyi did not induce a reduction of Pm Ago1 mRNA suggesting that its expression is associated with virus infection.
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Affiliation(s)
- Sasimanas Unajak
- Center of Excellence for Shrimp Biotechnology, Mahidol University, Bangkok 10400, Thailand
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Jitrapakdee S, Unajak S, Sittidilokratna N, Hodgson RAJ, Cowley JA, Walker PJ, Panyim S, Boonsaeng V. Identification and analysis of gp116 and gp64 structural glycoproteins of yellow head nidovirus of Penaeus monodon shrimp. J Gen Virol 2003; 84:863-873. [PMID: 12655087 DOI: 10.1099/vir.0.18811-0] [Citation(s) in RCA: 53] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023] Open
Abstract
Yellow head virus (YHV) is a major agent of disease in farmed penaeid shrimp. YHV virions purified from infected shrimp contain three major structural proteins of molecular mass 116 kDa (gp116), 64 kDa (gp64) and 20 kDa (p20). Two different staining methods indicated that the gp116 and gp64 proteins are glycosylated. Here we report the complete nucleotide sequence of ORF3, which encodes a polypeptide of 1666 amino acids with a calculated molecular mass of 185 713 Da (pI=6.68). Hydropathy analysis of the deduced ORF3 protein sequence identified six potential transmembrane helices and three ectodomains containing multiple sites for potential N-linked and O-linked glycosylation. N-terminal sequence analysis of mature gp116 and gp64 proteins indicated that each was derived from ORF3 by proteolytic cleavage of the polyprotein between residues Ala(228) and Thr(229), and Ala(1127) and Leu(1128), located at the C-terminal side of transmembrane helices 3 and 5, respectively. Comparison with the deduced ORF3 protein sequence of Australian gill-associated virus (GAV) indicated 83 % amino acid identity in gp64 and 71 % identity in gp116, which featured two significant sequence deletions near the N terminus. Database searches revealed no significant homology with other proteins. Recombinant gp64 expressed in E. coli with and without the C-terminal transmembrane region was shown to react with antibody raised against native gp64 purified from virions.
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Affiliation(s)
- Sarawut Jitrapakdee
- Department of Biochemistry, Faculty of Science, Mahidol University, Bangkok 10400, Thailand
- CENTEX Shrimp, Faculty of Science, Mahidol University, Bangkok 10400, Thailand
| | - Sasimanas Unajak
- Department of Biochemistry, Faculty of Science, Mahidol University, Bangkok 10400, Thailand
- CENTEX Shrimp, Faculty of Science, Mahidol University, Bangkok 10400, Thailand
| | - Nusra Sittidilokratna
- Department of Biochemistry, Faculty of Science, Mahidol University, Bangkok 10400, Thailand
- CENTEX Shrimp, Faculty of Science, Mahidol University, Bangkok 10400, Thailand
| | - Richard A J Hodgson
- CSIRO Livestock Industries, Long Pocket Laboratories, Indooroopilly, Queensland, Australia
| | - Jeff A Cowley
- CSIRO Livestock Industries, Long Pocket Laboratories, Indooroopilly, Queensland, Australia
| | - Peter J Walker
- CSIRO Livestock Industries, Long Pocket Laboratories, Indooroopilly, Queensland, Australia
| | - Sakol Panyim
- Department of Biochemistry, Faculty of Science, Mahidol University, Bangkok 10400, Thailand
| | - Vichai Boonsaeng
- Department of Biochemistry, Faculty of Science, Mahidol University, Bangkok 10400, Thailand
- CENTEX Shrimp, Faculty of Science, Mahidol University, Bangkok 10400, Thailand
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