1
|
Gao X, Liu S, Lv Y, Dai Q, Zhu L, Hu Z, Lu J, Zhou H, Jin J. Screening of Reference Genes for Quantitative Real-Time PCR Analysis in Tissues and during Testis Development, and Application to Analyze the Expression of kifc1 in Hemibarbus labeo (Teleostei, Cypriniformes, Cyprinidae). Animals (Basel) 2024; 14:2006. [PMID: 38998118 PMCID: PMC11240434 DOI: 10.3390/ani14132006] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2024] [Revised: 06/27/2024] [Accepted: 06/30/2024] [Indexed: 07/14/2024] Open
Abstract
The selection of proper reference genes is vital for ensuring precise quantitative real-time PCR (qPCR) assays. This study evaluates the stability of the expression of nine candidate reference genes in different tissues and during testicular development in H. labeo. The results show that eef1a is recommended as a reference gene for qPCR analysis in tissues and during testicular development. Furthermore, we evaluated the optimal number of reference genes needed when calculating gene expression levels using the geomean method, revealing that two reference genes are sufficient. Specifically, eef1a and rps27 are recommended for analysis of gene expression in tissues, whereas eef1a and actb are advised for evaluating gene expression during testicular development. In addition, we examined the expression pattern of kifc1, a kinesin involved in the reshaping of spermatids. We detected peak expression levels of kifc1 in testes, with its expression initially increasing before decreasing throughout testicular development. The highest expression of kifc1 was observed in stage IV testes, the active period of spermiogenesis, suggesting a possible role for kifc1 in the regulation of the reshaping of spermatids and hence testicular development. This study represents the first investigation of reference genes for H. labeo, providing a foundation for studying gene expression patterns and investigating gene expression regulation during testicular development.
Collapse
Affiliation(s)
- Xinming Gao
- College of Ecology, Lishui University, Lishui 323000, China
| | - Siqi Liu
- College of Ecology, Lishui University, Lishui 323000, China
| | - Yaoping Lv
- College of Ecology, Lishui University, Lishui 323000, China
| | - Qingmin Dai
- College of Ecology, Lishui University, Lishui 323000, China
| | - Ling Zhu
- College of Ecology, Lishui University, Lishui 323000, China
| | - Zehui Hu
- Zhejiang Marine Fisheries Research Institute, Zhoushan 316100, China
| | - Junkai Lu
- Cixi Fisheries Technology Extension Center, Ningbo 315300, China
| | - Haidong Zhou
- Suichang Fisheries and Agricultural Machinery Technology Extension Station, Lishui 323399, China
| | - Jing Jin
- Zhejiang Fisheries Technology Extension Center, Hangzhou 311100, China
| |
Collapse
|
2
|
Khunrang T, Pooljun C, Wuthisuthimethavee S. Correlation of Streptococcus agalactiae concentration on immune system and effective dose of inactivated vaccine for Chitralada 3 strain Nile tilapia (Oreochromis niloticus) in Thailand. BMC Vet Res 2023; 19:267. [PMID: 38082432 PMCID: PMC10712115 DOI: 10.1186/s12917-023-03835-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2023] [Accepted: 11/30/2023] [Indexed: 12/18/2023] Open
Abstract
The main pathogen in the Nile tilapia (Oreochromis niloticus) culture, Streptococcus agalactiae, causes economic harm. Infected fish's immune systems worked to eliminate of the infection. This study demonstrated the effect of different bacterial concentrations on tilapia immunity and optimal vaccine concentration to induce immunity in Nile tilapia. The experiment was performed at 102, 104, 106, 108, and 1010 CFU/fish of S. agalactiae compared with the control (PBS) through intraperitoneal injection for 72 h. Fish that survived employed to gather blood, and immune responses were assessed through measures of the survival rate include blood smears, antibody titers, and immunoglobulin gene expression. The vaccine experiment investigated formalin-inactivated S. agalactiae vaccination and administered S. agalactiae injections for 14 days. The statistic revealed a significant difference (p < 0.05) in the 108 and 1010 CFU/fish injections with high survival rates (62.22% and 53.33%, respectively). Immunoglobulin gene expression was highly represented in the 1010 CFU/fish injection; antibody titers were significantly improved from the control group, and antibody levels were high in the 1010 CFU/fish injection. The analysis of blood cell types using the blood smear method revealed a progressive increase in leucocytes, particularly lymphocytes, neutrophils, and monocytes, in the treatment group compared to the control group. Moreover, the erythrocyte/leucocyte ratio decreased significantly in response to the high bacterial injection, indicating an increase in leucocytes. Conversely, the erythrocyte level stayed ed within at the 7.03-9.70 × 102 cell/ml and shown no significant difference (p > 0.05). The lymphocytes were almost two-fold in 1010 CFU/fish compared to 108 CFU/fish. As depicted in the lowest concentration of 106 CFU/fish, the vaccine performance had a high relative percent survival (RPS) at 86.67%. This research suggested that the tilapia infected with high S. agalactiae concentrations did not affect the mortality of the tilapia, and vaccine concentration was effective in 106 CFU/fish.
Collapse
Affiliation(s)
- Thanakorn Khunrang
- School of Agricultural Technology and Food Industry, Walailak University, Thasala District, Nakhon Si Thammarat, 80161, Thailand
- Center of Excellence for Aquaculture Technology and Innovation, Walailak University, Thasala District, Nakhon Si Thammarat, 80161, Thailand
| | - Chettupon Pooljun
- Akkhraratchakumari Veterinary College, Walailak University, Thasala District, Nakhon Si Thammarat, 80161, Thailand
- Research Center on One Health, Walailak University, Thasala District, Nakhon Si Thammarat, 80161, Thailand
| | - Suwit Wuthisuthimethavee
- School of Agricultural Technology and Food Industry, Walailak University, Thasala District, Nakhon Si Thammarat, 80161, Thailand.
- Center of Excellence for Aquaculture Technology and Innovation, Walailak University, Thasala District, Nakhon Si Thammarat, 80161, Thailand.
| |
Collapse
|
3
|
Martínez-Durazo Á, Rivera-Domínguez M, García-Gasca SA, Betancourt-Lozano M, Cruz-Acevedo E, Jara-Marini ME. Assessing metal(loid)s concentrations and biomarkers in tilapia (Oreochromis niloticus) and largemouth bass (Micropterus salmoides) of three ecosystems of the Yaqui River Basin, Mexico. ECOTOXICOLOGY (LONDON, ENGLAND) 2023; 32:166-187. [PMID: 36689067 DOI: 10.1007/s10646-023-02620-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Accepted: 01/06/2023] [Indexed: 06/17/2023]
Abstract
Aquatic ecosystems have been suffering deleterious effects due to the development of different economic activities. Metal(loid)s are one of the most persistent chemicals in environmental reservoirs, and may produce adverse effects on different organisms. Since fishes have been largely used in studies of metal(loid)s exposure, tilapia and largemouth bass were collected in three ecosystems from the Yaqui River Basin to measure the concentrations of metal(loid)s (chromium (Cr), copper (Cu), iron (Fe), manganese (Mn), nickel (Ni), zinc (Zn) arsenic (As), mercury (Hg), and selenium (Se)) and some biomarkers (somatic indices, metallothionein expression and histopathological analysis) in tissues of both species. Metal(loid) concentrations varied seasonally among ecosystems in tissues of both species. The elements varied seasonally and spatially in tissues of both species, with a general distribution of liver > gills > gonads. Also, biomarkers showed variations indicative that the fish species were exposed to different environmental stressor conditions. The highest values of some biomarkers were in largemouth bass, possibly due to differences in their biological characteristics, mainly feeding habits. The multivariate analysis showed positive associations between metal(loid)s and biomarkers, which are usually associated to the use of these elements in metabolic and/or regulatory physiological processes. Both fish species presented histological damage at different levels, from SI types (changes that are reversible for organ structure) to SII types (changes that are more severe but may be repairable). Taken together, the results from this study suggest that the Yaqui River Basin is moderately impacted by metals and metalloids.
Collapse
Affiliation(s)
- Ángel Martínez-Durazo
- Posgrado en Ciencias, Centro de Investigación en Alimentación y Desarrollo, Unidad Hermosillo, Carretera Gustavo Astiazarán Rosas 46, Colonia La Victoria, Hermosillo, 83304, Sonora, Mexico
| | - Marisela Rivera-Domínguez
- Centro de Investigación en Alimentación y Desarrollo, Unidad Hermosillo, Carretera Gustavo Astiazarán Rosas 46, Colonia La Victoria, Hermosillo, 83304, Sonora, Mexico
| | - Silvia Alejandra García-Gasca
- Centro de Investigación en Alimentación y Desarrollo, Unidad Mazatlán, Sábalo Cerritos s/n, Mazatlán, 82112, Sinaloa, Mexico
| | - Miguel Betancourt-Lozano
- Centro de Investigación en Alimentación y Desarrollo, Unidad Mazatlán, Sábalo Cerritos s/n, Mazatlán, 82112, Sinaloa, Mexico
| | - Edgar Cruz-Acevedo
- Laboratorio de Investigación y Desarrollo, Facultad de Ciencias y Filosofía, Centro de Investigación Para el Desarrollo Integral y Sostenible, Universidad Peruana Cayetano Heredia, 15102, Lima, Peru
- Departamento de Ecología, Facultad de Ciencias Biológicas, Universidad Autónoma de Nuevo León, Monterrey, NL, Mexico
| | - Martin Enrique Jara-Marini
- Centro de Investigación en Alimentación y Desarrollo, Unidad Hermosillo, Carretera Gustavo Astiazarán Rosas 46, Colonia La Victoria, Hermosillo, 83304, Sonora, Mexico.
| |
Collapse
|
4
|
Zhou P, Chen W, Zhu Z, Zhou K, Luo S, Hu S, Xia L, Ding X. Comparative Study of Bacillus amyloliquefaciens X030 on the Intestinal Flora and Antibacterial Activity Against Aeromonas of Grass Carp. Front Cell Infect Microbiol 2022; 12:815436. [PMID: 35145928 PMCID: PMC8821659 DOI: 10.3389/fcimb.2022.815436] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2021] [Accepted: 01/03/2022] [Indexed: 01/16/2023] Open
Abstract
Beneficial microorganisms to control bacterial diseases has been widely used in aquaculture, Bacillus amyloliquefaciens (BaX030) as a probiotic feed additive was a commonly biological control method. Added sucrose promoted the growth of BaX030, and the yield of its antibacterial substance macrolactin A was enhanced by 1.46-fold. A total of 2055 proteins were screened through proteomics, with 143 upregulated and 307 downregulated. Differential protein expression analysis and qRT-PCR verification showed that the pentose phosphate pathway and the fatty acid synthesis pathway were upregulated, thereby providing sufficient energy and precursors for the synthesis of macrolactin A. The influence of some potential regulatory factors (SecG, LiaI, MecG and ComG) on macrolactin A was discovered. After grass carp were fed with BaX030, the abundance of probiotics (Fusobacterium, Proteobacteria, Gemmobacter) were higher than the control group, and the abundance of potential pathogenic bacteria (Planctomycetes, Aeromonas) were significantly lower than the control group. The cell and challenge experiments showed that BaX030 can significantly increase the expression of C3 and IL8 in the liver and kidney, which decreases the risk of immune organ disease. Moreover, BaX030 effectively reduced the mortality of grass carp. The results revealed that BaX030 can significantly improve the structure of the intestinal flora, enhance immunity and it is beneficial to the control of grass carp Aeromonas.
Collapse
|
5
|
Castillo-Collado ADC, Frías-Quintana CA, Morales-Garcia V, Alvarez-Villagomez CS, Asencio-Alcudia G, Peña-Marín ES, Martínez-Bautista G, Jiménez-Martinez LD, Álvarez-González CA. Characterization and expression of the gene glucose transporter 2 (GLUT2) in embryonic, larval and adult Bay snook Petenia splendida (Cichliformes: Cichlidae). NEOTROPICAL ICHTHYOLOGY 2022. [DOI: 10.1590/1982-0224-2021-0171] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Abstract Bay snook (Petenia splendida) is a carnivorous cichlid species with excellent economic value in Southeast Mexico. Although this species presents an excellent potential for commercial aquaculture, the information about its nutritional, physiological, and reproductive metabolic pathways is meager. The current study focuses on the expression of glucose transporter 2 (glut2) in embryos and larvae at 5, 10, 15-, 20-, 25-, and 30-days post-hatch (dph) and in the liver, intestine, kidney, muscle, heart, testicle, gill, stomach, pancreas, and brain of adult fish. The partial sequence of glut2 was obtained, and specific qPCR primers were designed. In embryos, the expression was lower compared to larvae at 5, 15, and 20 dph. The highest expression in larvae occurred at 20 dph and the lowest at 25 and 30 dph. Maximum expression levels in adults occurred in the liver and intestine. Our results show that glut2 is expressed differentially across tissues of adult bay snook, and it fluctuates during larval development.
Collapse
|
6
|
Predator-induced maternal effects determine adaptive antipredator behaviors via egg composition. Proc Natl Acad Sci U S A 2021; 118:2017063118. [PMID: 34507981 DOI: 10.1073/pnas.2017063118] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 06/28/2021] [Indexed: 11/18/2022] Open
Abstract
In high-risk environments with frequent predator encounters, efficient antipredator behavior is key to survival. Parental effects are a powerful mechanism to prepare offspring for coping with such environments, yet clear evidence for adaptive parental effects on offspring antipredator behaviors is missing. Rapid escape reflexes, or "C-start reflexes," are a key adaptation in fish and amphibians to escape predator strikes. We hypothesized that mothers living in high-risk environments might induce faster C-start reflexes in offspring by modifying egg composition. Here, we show that offspring of the cichlid fish Neolamprologus pulcher developed faster C-start reflexes and were more risk averse if their parents had been exposed to cues of their most dangerous natural predator during egg production. This effect was mediated by differences in egg composition. Eggs of predator-exposed mothers were heavier with higher net protein content, and the resulting offspring were heavier and had lower igf-1 gene expression than control offspring shortly after hatching. Thus, changes in egg composition can relay multiple putative pathways by which mothers can influence adaptive antipredator behaviors such as faster escape reflexes.
Collapse
|
7
|
Gu Z, Liu S, Duan Z, Kang R, Zhao M, Xia G, Shen X. Effect of citric acid on physicochemical properties and protein structure of low-salt restructured tilapia (Oreochromis mossambicus) meat products. JOURNAL OF THE SCIENCE OF FOOD AND AGRICULTURE 2021; 101:1636-1645. [PMID: 32888322 DOI: 10.1002/jsfa.10784] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/28/2020] [Revised: 08/12/2020] [Accepted: 09/05/2020] [Indexed: 06/11/2023]
Abstract
BACKGROUND The growing consumer demand for healthy products has encouraged the development of low-salt meat products. In this study, to develop low-salt restructured tilapia (Oreochromis mossambicus) meat products, citric acid was used to improve the properties of restructured tilapia products. RESULTS In comparison with control restructured fish products (RP) and surimi products (SP), 0.2% citric acid-treated restructured fish products (RPC) and surimi products (SPC) showed a significant decrease in expressible water and water activity and a remarkable increase in whiteness, dry matter, hardness, chewiness, gumminess, and acceptability. Mechanistic studies suggested that citric acid significantly changed the content of total protein and myofibrillar proteins and promoted degradation of heavy myosin chains. Fourier-transform infrared and Raman spectra revealed the citric acid-mediated alteration in the peak intensities of amide I and amide II bands, which changed the secondary structures of RPC and SPC. CONCLUSION It is feasible to prepare low-salt restructured tilapia meat products using citric acid, which offers a means of using muscle by-products and exploiting new functional products with an added commercial value. © 2020 Society of Chemical Industry.
Collapse
Affiliation(s)
- Zhipeng Gu
- Hainan Engineering Research Center of Aquatic Resources Efficient Utilization in South China Sea, Hainan University, Haikou, China
- College of Food Science and Technology, Hainan University, Haikou, China
| | - Shuhui Liu
- Hainan Engineering Research Center of Aquatic Resources Efficient Utilization in South China Sea, Hainan University, Haikou, China
- College of Food Science and Technology, Hainan University, Haikou, China
| | - Zhouwei Duan
- Institute of Processing & Design of Agroproducts, Hainan Academy of Agricultural Science, Haikou, China
| | - Rui Kang
- Hainan Institute for Food Control, Haikou, China
| | - Meihui Zhao
- College of Food Science and Technology, Hainan University, Haikou, China
| | - Guanghua Xia
- Hainan Engineering Research Center of Aquatic Resources Efficient Utilization in South China Sea, Hainan University, Haikou, China
- College of Food Science and Technology, Hainan University, Haikou, China
- Key Laboratory of Food Nutrition and Functional Food of Hainan Province, Haikou, China
- Engineering Research Center of Utilization of Tropical Polysaccharide Resources, Ministry of Education, Haikou, China
| | - Xuanri Shen
- Hainan Engineering Research Center of Aquatic Resources Efficient Utilization in South China Sea, Hainan University, Haikou, China
- College of Food Science and Technology, Hainan University, Haikou, China
- Key Laboratory of Food Nutrition and Functional Food of Hainan Province, Haikou, China
- Engineering Research Center of Utilization of Tropical Polysaccharide Resources, Ministry of Education, Haikou, China
| |
Collapse
|
8
|
Abdelkhalek NK, Risha E, El-Adl MA, Salama MF, Dawood MAO. Antibacterial and antioxidant activity of clove oil against Streptococcus iniae infection in Nile tilapia (Oreochromis niloticus) and its effect on hepatic hepcidin expression. FISH & SHELLFISH IMMUNOLOGY 2020; 104:478-488. [PMID: 32470509 DOI: 10.1016/j.fsi.2020.05.064] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/19/2020] [Revised: 05/21/2020] [Accepted: 05/24/2020] [Indexed: 06/11/2023]
Abstract
This study was designed to evaluate the modulating effect dietary clove essential oil (CL) has on the antioxidant and immunological status of Nile tilapia following Streptococcus iniae (Si) infection. Fish were placed on either control or (1.5 and 3%) CL-supplemented diets for 4 weeks. After sampling, the remaining fish in the control group were divided into 2 groups: an unchallenged (negative control) and an Si-challenged positive control. On the other hand, the remaining fish in CL-supplemented groups were challenged with Si, and mortality was checked for two weeks before the final sampling. Serum immunological parameters, tissue antioxidants, and oxidative stress markers were determined. Moreover, hepatic hepcidin expression was also measured in different groups. The obtained results showed improvements in blood phagocytic, bactericidal, lysozyme, and respiratory burst activities in CL-supplemented fish before and after the Si challenge. Si-challenge caused a remarkable increase in tissue malondialdehyde (MDA) levels that was inhibited by CL supplementation. The activities of glutathione peroxidase (GPx) and superoxide dismutase (SOD) in tissues were significantly elevated in a dose-dependent manner in CL-supplemented groups in both pre- and post-challenge experiments; renal SOD did not show any differences. Hepatic nitric oxide (NO) level was significantly decreased in CL-supplemented fish in a dose-dependent manner. In the post-challenge experiment, nitrosative stress was apparent in the liver and kidney; however, CL supplementation was sufficient to reverse it. Interestingly, a remarkable induction of the hepatic hepcidin expression was observed in all CL-supplemented groups in the pre-challenge experiment and Si-challenged fish, underscoring the role of CL as an antibacterial through inducing hepatic hepcidin expression to combat S. iniae infection. CL-supplementation was associated with lower mortality rates after Si-challenge, which was more pronounced in CL-3% supplemented fish. In conclusion, our results demonstrate that CL has a potent antioxidant role via increasing antioxidant enzymes' activities and antagonizing lipid peroxidation. Moreover, CL has an immune-stimulant effect by inducing the hepatic hepcidin expression and immunological markers in response to S. iniae infection.
Collapse
Affiliation(s)
- Nevien K Abdelkhalek
- Department of Internal Medicine, Infectious and Fish Diseases, Faculty of Veterinary Medicine, Mansoura University, Mansoura, 35516, Egypt.
| | - Engy Risha
- Clinical Pathology Department, Faculty of Veterinary Medicine, Mansoura University, Mansoura, 35516, Egypt
| | - Mohamed A El-Adl
- Department of Biochemistry, Faculty of Veterinary Medicine, Mansoura University, Mansoura, 35516, Egypt
| | - Mohamed F Salama
- Department of Biochemistry, Faculty of Veterinary Medicine, Mansoura University, Mansoura, 35516, Egypt.
| | - Mahmoud A O Dawood
- Department of Animal Production, Faculty of Agriculture, Kafrelsheikh University, Egypt
| |
Collapse
|
9
|
Bayır M, Arslan G, Bayır A. Identification and Characterization of Carnitine Palmitoyltransferase 1 ( cpt 1) Genes in Nile Tilapia, Oreochromis niloticus. Evol Bioinform Online 2020; 16:1176934320913255. [PMID: 32231427 PMCID: PMC7088126 DOI: 10.1177/1176934320913255] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2020] [Accepted: 02/18/2020] [Indexed: 11/15/2022] Open
Abstract
Four cpt 1 genes (cpt 1α1a, cpt 1α2a, cpt 1α2b, and cpt 1β) were identified in the Nile tilapia genome. Two transmembrane helix domains (TMH) were identified for Cpt 1α1a, Cpt 1α2a, and Cpt 1β, while Cpt 1α2b had only one TMH domain. Evidence was found of conserved gene synteny between cpt 1 genes from Nile tilapia and the cpt 1/CPT 1 genes of zebrafish and human. Phylogenetic analysis showed that Nile tilapia Cpt 1 sequences clustered in distinct clades with their orthologous Cpt 1/CPT 1 from other vertebrates. Nile tilapia cpt 1α1a, cpt 1α2a, cpt 1α2b, and cpt 1β contain 18 coding exons encoding polypeptides of 771, 784, 788, and 786 amino acids in length, respectively. The cpt 1 genes were determined in all the tested tissues with varying tissue distribution patterns. These findings suggest that (1) cpt 1α1a, cpt 1α2a, and cpt 1α2b arose in the Nile tilapia genome as a result of the teleost-specific whole-genome duplication; (2) nonfunctionalization is the most likely cause of the loss of cpt 1α1b in the Nile tilapia genome; (3) the different tissue-specific transcription of cpt 1α2a and cpt 1α2b may be either due to the sub- or the neo-functionalization of transcriptional control side.
Collapse
Affiliation(s)
- Mehtap Bayır
- Department of Agricultural Biotechnology, Faculty of Agriculture, Atatürk University, Erzurum, Turkey
| | - Gökhan Arslan
- Department of Fisheries and Fish Processing Technology, Faculty of Fisheries, Atatürk University, Erzurum, Turkey
| | - Abdulkadir Bayır
- Department of Aquaculture, Faculty of Fisheries, Atatürk University, Erzurum, Turkey
| |
Collapse
|
10
|
Li Y, Han J, Wu J, Li D, Yang X, Huang A, Bu G, Meng F, Kong F, Cao X, Han X, Pan X, Yang S, Zeng X, Du X. Transcriptome-based evaluation and validation of suitable housekeeping gene for quantification real-time PCR under specific experiment condition in teleost fishes. FISH & SHELLFISH IMMUNOLOGY 2020; 98:218-223. [PMID: 31935552 DOI: 10.1016/j.fsi.2020.01.018] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/13/2019] [Revised: 01/04/2020] [Accepted: 01/10/2020] [Indexed: 06/10/2023]
Abstract
Quantification real-time PCR (qRT-PCR) is a common method in analysis of gene expression, but the stable reference genes for the normalization analysis have not been appreciated before identifying expression pattern of genes in teleost fishes. In this study, we selected eight candidate reference genes (18S, Actin, EF-1α, 40S, B2M, TUBA, UBCE and GAPDH) basing on transcriptome analysis and the traditional housekeeping genes, and analyzed the stability of the reference genes in spleen, head kidney and head kidney leukocytes (HKL) after pathogen challenge in Schizothorax prenanti (S. prenanti). Three common programs (geNorm, NormFinder and Bestkeeper) were used to evaluate the stability of the candidate reference genes. Two reference genes, Actin and EF-1α presented higher stability, while 18S and GAPDH were the lower stable genes, both in in vitro and in vivo. An important immune gene, toll-like receptor 22a (TLR22a), was selected to validate the stability of the proposed reference genes (Actin and EF-1α) across different experiment treatments. The results reveal that Actin and EF-1α are quite suitable reference genes for the normalization analysis. Otherwise, using the most stable gene Actin to validate the reliable of transcriptome data showed the high correlation between the fold change of transcriptome data and qRT-PCR data. In conclusion, our study not only acquired the suitable reference gene for the qRT-PCR assay under specific experiment condition, but also provided a comprehensive method to evaluate and validate the reference gene based on transcriptome analysis in teleost fishes.
Collapse
Affiliation(s)
- Yunkun Li
- Department of Engineering and Applied Biology, College of Life Science, Sichuan Agricultural University, Ya'an, 625014, Sichuan, PR China
| | - Jiabei Han
- Department of Engineering and Applied Biology, College of Life Science, Sichuan Agricultural University, Ya'an, 625014, Sichuan, PR China
| | - Jiayu Wu
- Department of Engineering and Applied Biology, College of Life Science, Sichuan Agricultural University, Ya'an, 625014, Sichuan, PR China
| | - Dong Li
- Department of Engineering and Applied Biology, College of Life Science, Sichuan Agricultural University, Ya'an, 625014, Sichuan, PR China
| | - Xixi Yang
- Department of Engineering and Applied Biology, College of Life Science, Sichuan Agricultural University, Ya'an, 625014, Sichuan, PR China
| | - Anqi Huang
- Department of Engineering and Applied Biology, College of Life Science, Sichuan Agricultural University, Ya'an, 625014, Sichuan, PR China
| | - Guixian Bu
- Department of Engineering and Applied Biology, College of Life Science, Sichuan Agricultural University, Ya'an, 625014, Sichuan, PR China
| | - Fengyan Meng
- Department of Engineering and Applied Biology, College of Life Science, Sichuan Agricultural University, Ya'an, 625014, Sichuan, PR China
| | - Fanli Kong
- Department of Engineering and Applied Biology, College of Life Science, Sichuan Agricultural University, Ya'an, 625014, Sichuan, PR China
| | - Xiaohan Cao
- Department of Engineering and Applied Biology, College of Life Science, Sichuan Agricultural University, Ya'an, 625014, Sichuan, PR China
| | - Xingfa Han
- Department of Engineering and Applied Biology, College of Life Science, Sichuan Agricultural University, Ya'an, 625014, Sichuan, PR China
| | - Xiaofu Pan
- State Key Laboratory of Genetic Resources and Evolution, Kunming Institute of Zoology, Chinese Academy of Sciences, Kunming, 650223, PR China
| | - Shiyong Yang
- Department of Aquaculture, Sichuan Agricultural University, 625014, Sichuan, PR China
| | - Xianyin Zeng
- Department of Engineering and Applied Biology, College of Life Science, Sichuan Agricultural University, Ya'an, 625014, Sichuan, PR China.
| | - Xiaogang Du
- Department of Engineering and Applied Biology, College of Life Science, Sichuan Agricultural University, Ya'an, 625014, Sichuan, PR China.
| |
Collapse
|
11
|
Gao Y, Gao Y, Huang B, Meng Z, Jia Y. Reference gene validation for quantification of gene expression during ovarian development of turbot (Scophthalmus maximus). Sci Rep 2020; 10:823. [PMID: 31964949 PMCID: PMC6972784 DOI: 10.1038/s41598-020-57633-3] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2019] [Accepted: 01/03/2020] [Indexed: 12/21/2022] Open
Abstract
Quantitative real-time reverse transcription-polymerase chain reaction (qRT-PCR) is a powerful and sensitive method used in gene expression analysis. Suitable reference genes, which are stable under all experimental circumstances and tissues significantly improve the accuracy of qRT-PCR data. In this study, the stability of six genes, namely, 18S ribosomal RNA (18s), beta-actin (actb), elongation factor 1-alpha (ef1α), glyceraldehyde-3-phosphate-dehydrogenase (gapdh), cathepsin D (ctsd), and beta-2-microglobulin (b2m) were evaluated as potential references for qRT-PCR analysis. The genes were examined in the hypothalamus-pituitary-ovary-liver (HPOL) axis throughout turbot ovarian development via using the geNorm, NormFinder and BestKeeper algorithms. Results showed that the most stable reference genes were ef1α, actb, and ctsd in the hypothalamus, pituitary, ovary and liver, respectively. The best-suited gene combinations for normalization were 18s, ef1α, and ctsd in the hypothalamus; actb, ctsd, and 18s in the pituitary; actb, and ctsd in the ovary; gapdh and ctsd in the liver. Moreover, the expression profile of estrogen receptor α (erα) manifested no significant difference normalization to the aforementioned best-suited gene during turbot ovarian development. However, no single gene or pair of genes is suitable as an internal control and account for the amplification differences among the four tissues during ovarian development. In summary, these results provide a basic data for the optimal reference gene selection and obtain highly accurate normalization of qRT-PCR data in HPOL axis-related gene expression analysis during turbot ovarian development.
Collapse
Affiliation(s)
- Yunhong Gao
- Yellow Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Qingdao Key Laboratory for Marine Fish Breeding and Biotechnology, Qingdao, 266071, China.,College of Fisheries and Life Science, Shanghai Ocean University, Shanghai, 201306, China
| | - Yuntao Gao
- Yellow Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Qingdao Key Laboratory for Marine Fish Breeding and Biotechnology, Qingdao, 266071, China.,College of Fisheries and Life Science, Shanghai Ocean University, Shanghai, 201306, China
| | - Bin Huang
- Yellow Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Qingdao Key Laboratory for Marine Fish Breeding and Biotechnology, Qingdao, 266071, China
| | - Zhen Meng
- Yellow Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Qingdao Key Laboratory for Marine Fish Breeding and Biotechnology, Qingdao, 266071, China
| | - Yudong Jia
- Yellow Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Qingdao Key Laboratory for Marine Fish Breeding and Biotechnology, Qingdao, 266071, China.
| |
Collapse
|
12
|
Yang Z, Wang K, Aziz U, Zhao C, Zhang M. Evaluation of duplicated reference genes for quantitative real-time PCR analysis in genome unknown hexaploid oat ( Avena sativa L.). PLANT METHODS 2020; 16:138. [PMID: 33072174 PMCID: PMC7560290 DOI: 10.1186/s13007-020-00679-1] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/02/2020] [Accepted: 10/05/2020] [Indexed: 05/08/2023]
Abstract
BACKGROUND Oat (Avena sativa L.), a hexaploid crop with unknown genome, has valuable nutritional, medicinal and pharmaceutical uses. However, no suitable RGs (reference genes) for qPCR (quantitative real-time PCR) has been documented for oat yet. Single-copy gene is often selected as RG, which is challengeable or impactable in unexplored polyploids. RESULTS In this study, eleven candidate RGs, including four duplicated genes, were selected from oat transcriptome. The stability and the optimal combination of these candidate RGs were assessed in 18 oat samples by using four statistical algorithms including the ΔCt method, geNorm, NormFinder and BestKeeper. The most stable RGs for "all samples", "shoots and roots of seedlings", "developing seeds" and "developing endosperms" were EIF4A (Eukaryotic initiation factor 4A-3), UBC21 (Ubiquitin-Conjugating Enzyme 21), EP (Expressed protein) and EIF4A respectively. Among these RGs, UBC21 was a four-copy duplicated gene. The reliability was validated by the expression patterns of four various genes normalized to the most and the least stable RGs in different sample sets. CONCLUSIONS Results provide a proof of concept that the duplicated RG is feasible for qPCR in polyploids. To our knowledge, this study is the first systematic research on the optimal RGs for accurate qPCR normalization of gene expression in different organs and tissues of oat.
Collapse
Affiliation(s)
- Zheng Yang
- College of Agronomy, Northwest A&F University, Yangling, 712100 Shaanxi China
| | - Kai Wang
- College of Agronomy, Northwest A&F University, Yangling, 712100 Shaanxi China
| | - Usman Aziz
- College of Agronomy, Northwest A&F University, Yangling, 712100 Shaanxi China
| | - Cuizhu Zhao
- College of Agronomy, Northwest A&F University, Yangling, 712100 Shaanxi China
| | - Meng Zhang
- College of Agronomy, Northwest A&F University, Yangling, 712100 Shaanxi China
| |
Collapse
|
13
|
Wang Z, Meng Q, Zhu X, Sun S, Liu A, Gao S, Gou Y. Identification and Evaluation of Reference Genes for Normalization of Gene Expression in Developmental Stages, Sexes, and Tissues of Diaphania caesalis (Lepidoptera, Pyralidae). JOURNAL OF INSECT SCIENCE (ONLINE) 2020; 20:5700579. [PMID: 31925425 PMCID: PMC6954454 DOI: 10.1093/jisesa/iez130] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/05/2019] [Indexed: 05/04/2023]
Abstract
Diaphania caesalis (Walker) is an important boring insect mainly distributed in subtropical and tropical areas and attacked tropical woody grain crops, such as starchy plants of Artocarpus. Quantitative real-time polymerase chain reaction (qRT-PCR) is a powerful approach for investigating target genes expression profiles at the transcriptional level. However, the identification and selection of internal reference genes, which is often overlooked, is the most vital step before the analysis of target gene expression by qRT-PCR. So far, the reliable internal reference genes under a certain condition of D. caesalis have not been investigated. Therefore, this study evaluated the expression stability of eight candidate reference genes including ACT, β-TUB, GAPDH, G6PDH, RPS3a, RPL13a, EF1α, and EIF4A in different developmental stages, tissues and sexes using geNorm, NormFinder and BestKeeper algorithms. To verify the stability of the recommended internal reference genes, the expression levels of DcaeOBP5 were analyzed under different treatment conditions. The results indicated that ACT, RPL13a, β-TUB, RPS3a, and EF1α were identified as the most stable reference genes for further studies on target gene expression involving different developmental stages of D. caesalis. And ACT and EIF4A were recommended as stable reference genes for different tissues. Furthermore, ACT, EF1α, and RPS3a were ranked as the best reference genes in different sexes based on three algorithms. Our research represents the critical first step to normalize qRT-PCR data and ensure the accuracy of expression of target genes involved in phylogenetic and physiological mechanism at the transcriptional level in D. caesalia.
Collapse
Affiliation(s)
- Zheng Wang
- Hainan Provincial Key Laboratory of Genetic Improvement and Quality Regulation for Tropical Spice and Beverage Crops, Spice and Beverage Research Institute, Chinese Academy of Tropical Agricultural Sciences, Wanning, China
| | - Qianqian Meng
- Hainan Provincial Key Laboratory of Genetic Improvement and Quality Regulation for Tropical Spice and Beverage Crops, Spice and Beverage Research Institute, Chinese Academy of Tropical Agricultural Sciences, Wanning, China
- Corresponding author, e-mail:
| | - Xi Zhu
- Hainan Provincial Key Laboratory of Genetic Improvement and Quality Regulation for Tropical Spice and Beverage Crops, Spice and Beverage Research Institute, Chinese Academy of Tropical Agricultural Sciences, Wanning, China
- Institute of Tropical Agriculture and Forestry, Hainan University, Haikou, China
| | - Shiwei Sun
- Hainan Provincial Key Laboratory of Genetic Improvement and Quality Regulation for Tropical Spice and Beverage Crops, Spice and Beverage Research Institute, Chinese Academy of Tropical Agricultural Sciences, Wanning, China
| | - Aiqin Liu
- Hainan Provincial Key Laboratory of Genetic Improvement and Quality Regulation for Tropical Spice and Beverage Crops, Spice and Beverage Research Institute, Chinese Academy of Tropical Agricultural Sciences, Wanning, China
- Institute of Tropical Agriculture and Forestry, Hainan University, Haikou, China
| | - Shengfeng Gao
- Hainan Provincial Key Laboratory of Genetic Improvement and Quality Regulation for Tropical Spice and Beverage Crops, Spice and Beverage Research Institute, Chinese Academy of Tropical Agricultural Sciences, Wanning, China
| | - Yafeng Gou
- Hainan Provincial Key Laboratory of Genetic Improvement and Quality Regulation for Tropical Spice and Beverage Crops, Spice and Beverage Research Institute, Chinese Academy of Tropical Agricultural Sciences, Wanning, China
| |
Collapse
|
14
|
Ma F, Liu Z, Huang J, Kang Y, Wang J. Evaluation of reference genes for quantitative real-time PCR analysis of messenger RNAs and microRNAs in rainbow trout Oncorhynchus mykiss under heat stress. JOURNAL OF FISH BIOLOGY 2019; 95:540-554. [PMID: 30993691 DOI: 10.1111/jfb.13986] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/10/2019] [Accepted: 04/15/2019] [Indexed: 06/09/2023]
Abstract
We assessed the expression stability of several messenger (m)RNAs and micro (mi)RNAs from liver and head kidney of rainbow trout Oncorhynchus mykiss using high-throughput RNA sequencing (RNA-seq) and miRNA-seq data. Additionally, four commonly used reference genes and one small non-coding RNA (u6) were also selected to identify ideal reference mRNAs and miRNAs for quantitative real-time (qrt)-PCR analysis of heat stress responses. GeNorm, NormFinder, BestKeeper and comparative ΔCt were employed for analysis of qrt-PCR data to systematically assess the expression stability of candidate mRNAs and miRNAs and stability was ranked using geometric means. β-actin and ef1-α were the most stably expressed reference mRNAs in liver and head kidney, respectively and ssa-mir-26a-5p and ssa-mir-462b-5p were the most stably expressed miRNAs in these tissues. This is the first identification of appropriate reference mRNAs and miRNAs for qrt-PCR analysis of O. mykiss under heat stress.
Collapse
Affiliation(s)
- Fang Ma
- College of Animal Science and Technology, Gansu Agricultural University, No. 1 Yingmencun, Anning District, Lanzhou, Gansu, China
| | - Zhe Liu
- College of Animal Science and Technology, Gansu Agricultural University, No. 1 Yingmencun, Anning District, Lanzhou, Gansu, China
| | - Jinqiang Huang
- College of Animal Science and Technology, Gansu Agricultural University, No. 1 Yingmencun, Anning District, Lanzhou, Gansu, China
| | - Yujun Kang
- College of Animal Science and Technology, Gansu Agricultural University, No. 1 Yingmencun, Anning District, Lanzhou, Gansu, China
| | - Jianfu Wang
- College of Animal Science and Technology, Gansu Agricultural University, No. 1 Yingmencun, Anning District, Lanzhou, Gansu, China
| |
Collapse
|
15
|
Halimi M, Alishahi M, Abbaspour MR, Ghorbanpoor M, Tabandeh MR. Valuable method for production of oral vaccine by using alginate and chitosan against Lactococcus garvieae/Streptococcus iniae in rainbow trout (Oncorhynchus mykiss). FISH & SHELLFISH IMMUNOLOGY 2019; 90:431-439. [PMID: 31082516 DOI: 10.1016/j.fsi.2019.05.020] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/16/2019] [Revised: 05/08/2019] [Accepted: 05/09/2019] [Indexed: 06/09/2023]
Abstract
The effectiveness of ionotropic gelation method (by combining alginate and chitosan) vaccine against Lactococcus garvieae and Streptococcus iniae was examined in rainbow trout. Fish were separated into four groups and fed the distinctive examined feeds. Our groups were included: A) fish immunized by chitosan-alginate coated vaccine, B) fish immunized by non-coated vaccine, C) fish feed by chitosan-alginate coated pellets without vaccine and D) fish feed by basic diet (non-coated and without vaccine). In groups A and B, the vaccination was carried out for 14 days. Fish of group C, like groups A and B were fed 14 days with pellets covered with chitosan-alginate without vaccine and a short time later they were fed with control diet. On day 0, 20, 40 and 60 of the trial, serum samples were extracted. Fish were challenged with L. garvieae and S. iniae after 60 days of research. Innate immunity components containing complement activity, total protein and IgM appeared no significant changes nearly in all groups during the 60 days that the examination finished. Although, bactericidal activity and lysozyme activity demonstrated a significant increase on days 20, 40 and 60 in group A compared to control groups (C and D) (P < 0.05) and similar results about the blood respiratory burst activity just on days 20 and 40 were obtained. Also, the relative expression of IL-6 of group A, was significantly higher compared to all of other groups (B, C and D) on days 20 and 60 of experiment (P < 0.05). The same results were obtained about the relative expression of IgM. The serum ELISA antibody titer against L. garvieae, increased significantly on days 20 and 40 of experiment in fish immunized by chitosan-alginate coated vaccine (Group A) compared to control groups (C and D)(P < 0.05) while the result of ELISA test against S. iniae was significantly higher on days 40 and 60 of experiment in group A compared to groups B, C and D (P < 0.05). After challenge with these two live bacteria (S. iniae and L. garvieae), a survival rates of 76.67 ± 5.77% (challenged with S. iniae) and 66.67 ± 5.77% (challenged with L. garvieae) were seen in group immunized with chitosan-alginate coated vaccine (Group A), which were higher than survival rates gotten in other trial groups (P < 0.05). The consequences of the present experiment show that the oral vaccination of rainbow trout with improved chitosan-alginate (via ionotropic procedure) (group A) properly secures this important fish against Lactococcus garvieae and Streptococcus iniae.
Collapse
Affiliation(s)
- Mostafa Halimi
- Department of Clinical Sciences, Faculty of Veterinary Medicine, Shahid Chamran University of Ahvaz, Ahvaz, Iran.
| | - Mojtaba Alishahi
- Department of Clinical Sciences, Faculty of Veterinary Medicine, Shahid Chamran University of Ahvaz, Ahvaz, Iran
| | - Mohammad Reza Abbaspour
- Targeted Drug Delivery Research Center, Pharmaceutical Technology Institute, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Masoud Ghorbanpoor
- Department of Microbiology and Immunology, Faculty of Veterinary Medicine,Shahid Chamran University of Ahvaz, Ahvaz, Iran
| | - Mohammad Reza Tabandeh
- Department of Biochemistry and Molecular Biology, Faculty of Veterinary Medicine, Shahid Chamran University of Ahvaz, Ahvaz, Iran
| |
Collapse
|
16
|
Li BJ, Zhu ZX, Gu XH, Lin HR, Xia JH. QTL Mapping for Red Blotches in Malaysia Red Tilapia (Oreochromis spp.). MARINE BIOTECHNOLOGY (NEW YORK, N.Y.) 2019; 21:384-395. [PMID: 30863905 DOI: 10.1007/s10126-019-09888-9] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/14/2018] [Accepted: 02/21/2019] [Indexed: 06/09/2023]
Abstract
Body color is an interesting economic trait in fish. Red tilapia with red blotches may decrease its commercial values. Conventional selection of pure red color lines is a time-consuming and labor-intensive process. To accelerate selection of pure lines through marker-assisted selection, in this study, double-digest restriction site-associated DNA sequencing (ddRAD-seq) technology was applied to genotype a full-sib mapping family of Malaysia red tilapia (Oreochromis spp.) (N = 192). Genome-wide significant quantitative trait locus (QTL)-controlling red blotches were mapped onto two chromosomes (chrLG5 and chrLG15) explaining 9.7% and 8.2% of phenotypic variances by a genome-wide association study (GWAS) and linkage-based QTL mapping. Six SNPs from the chromosome chrLG5 (four), chrLG15 (one), and unplaced supercontig GL831288-1 (one) were significantly associated to the red blotch trait in GWAS analysis. We developed nine microsatellite markers and validated significant correlations between genotypes and blotch data (p < 0.05). Our study laid a foundation for exploring a genetic mechanism of body colors and carrying out genetic improvement for color quality in tilapia.
Collapse
Affiliation(s)
- Bi Jun Li
- State Key Laboratory of Biocontrol, Institute of Aquatic Economic Animals and Guangdong Provincial Key Laboratory for Aquatic Economic Animals, College of Life Sciences, Sun Yat-sen University, Guangzhou, 510275, People's Republic of China
| | - Zong Xian Zhu
- State Key Laboratory of Biocontrol, Institute of Aquatic Economic Animals and Guangdong Provincial Key Laboratory for Aquatic Economic Animals, College of Life Sciences, Sun Yat-sen University, Guangzhou, 510275, People's Republic of China
| | - Xiao Hui Gu
- State Key Laboratory of Biocontrol, Institute of Aquatic Economic Animals and Guangdong Provincial Key Laboratory for Aquatic Economic Animals, College of Life Sciences, Sun Yat-sen University, Guangzhou, 510275, People's Republic of China
| | - Hao Ran Lin
- State Key Laboratory of Biocontrol, Institute of Aquatic Economic Animals and Guangdong Provincial Key Laboratory for Aquatic Economic Animals, College of Life Sciences, Sun Yat-sen University, Guangzhou, 510275, People's Republic of China
| | - Jun Hong Xia
- State Key Laboratory of Biocontrol, Institute of Aquatic Economic Animals and Guangdong Provincial Key Laboratory for Aquatic Economic Animals, College of Life Sciences, Sun Yat-sen University, Guangzhou, 510275, People's Republic of China.
| |
Collapse
|
17
|
Shahin K, Shinn AP, Metselaar M, Ramirez-Paredes JG, Monaghan SJ, Thompson KD, Hoare R, Adams A. Efficacy of an inactivated whole-cell injection vaccine for nile tilapia, Oreochromis niloticus (L), against multiple isolates of Francisella noatunensis subsp. orientalis from diverse geographical regions. FISH & SHELLFISH IMMUNOLOGY 2019; 89:217-227. [PMID: 30951851 DOI: 10.1016/j.fsi.2019.03.071] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/10/2019] [Revised: 03/26/2019] [Accepted: 03/28/2019] [Indexed: 06/09/2023]
Abstract
Francisellosis, induced by Francisella noatunensis subsp. orientalis (Fno), is an emerging bacterial disease representing a major threat to the global tilapia industry. There are no commercialised vaccines presently available against francisellosis for use in farmed tilapia, and the only available therapeutic practices used in the field are either the prolonged use of antibiotics or increasing water temperature. Recently, an autogenous whole cell-adjuvanted injectable vaccine was developed that gave 100% relative percent survival (RPS) in tilapia challenged with a homologous isolate of Fno. In this study, we evaluated the efficacy of this vaccine against challenge with heterologous Fno isolates. Healthy Nile tilapia, Oreochromis niloticus (∼15 g) were injected intraperitoneally (i.p.) with the vaccine, adjuvant-alone or phosphate buffer saline (PBS) followed by an i.p. challenge with three Fno isolates from geographically distinct locations. The vaccine provided significant protection in all groups of vaccinated tilapia, with a significantly higher RPS of 82.3% obtained against homologous challenge, compared to 69.8% and 65.9% with the heterologous challenges. Protection correlated with significantly higher specific antibody responses, and western blot analysis demonstrated cross-isolate antigenicity with fish sera post-vaccination and post-challenge. Moreover, a significantly lower bacterial burden was detected by qPCR in conjunction with significantly greater expression of IgM, IL-1 β, TNF-α and MHCII, 72 h post-vaccination (hpv) in spleen samples from vaccinated tilapia compared to fish injected with adjuvant-alone and PBS. The Fno vaccine described in this study may provide a starting point for development a broad-spectrum highly protective vaccine against francisellosis in tilapia.
Collapse
Affiliation(s)
- Khalid Shahin
- Institute of Aquaculture, Faculty of Natural Sciences, University of Stirling, Stirling, FK9 4LA, Scotland, UK; Aquatic Animal Diseases Lab, Aquaculture Department, National Institute of Oceanography and Fisheries (NIOF), P.O. Box 43511, Suez, Egypt.
| | - Andrew P Shinn
- Fish Vet Group Asia, 21/359 Premjairard Road, Chonburi, 20130, Thailand
| | - Matthijs Metselaar
- Benchmark Animal Health, Bush House, Edinburgh Technopole, Midlothian, Edinburgh, EH26 0BB, UK
| | | | - Sean J Monaghan
- Institute of Aquaculture, Faculty of Natural Sciences, University of Stirling, Stirling, FK9 4LA, Scotland, UK
| | - Kim D Thompson
- Moredun Research Institute, Pentlands Science Park, Bush Loan, Midlothian, EH26 0PZ, UK
| | - Rowena Hoare
- Institute of Aquaculture, Faculty of Natural Sciences, University of Stirling, Stirling, FK9 4LA, Scotland, UK
| | - Alexandra Adams
- Institute of Aquaculture, Faculty of Natural Sciences, University of Stirling, Stirling, FK9 4LA, Scotland, UK
| |
Collapse
|
18
|
Evaluation of reference genes for quantitative real-time PCR analysis of gene expression in Hainan medaka (Oryzias curvinotus). GENE REPORTS 2019. [DOI: 10.1016/j.genrep.2018.11.008] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
|
19
|
Hawkins LJ, Luu BE, Storey KB. Selection of reference genes for accurate RT-qPCR analysis of dehydration tolerance in Xenopus laevis. GENE REPORTS 2018. [DOI: 10.1016/j.genrep.2018.10.006] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
|
20
|
Velázquez J, Acosta J, Lugo JM, Reyes E, Herrera F, González O, Morales A, Carpio Y, Estrada MP. Discovery of immunoglobulin T in Nile tilapia (Oreochromis niloticus): A potential molecular marker to understand mucosal immunity in this species. DEVELOPMENTAL AND COMPARATIVE IMMUNOLOGY 2018; 88:124-136. [PMID: 30012536 DOI: 10.1016/j.dci.2018.07.013] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/26/2018] [Revised: 07/12/2018] [Accepted: 07/12/2018] [Indexed: 05/08/2023]
Abstract
Immunoglobulin molecules play an important role in the immune defense system in all jawed vertebrates, by protecting the organism from a wide variety of pathogens. Nile tilapia (Oreochromis niloticus) is extensively cultivated worldwide, with a strong established market demand. It constitutes one of the model species for the study of fish immunology and its genome is currently fully sequenced. The presence of the immunoglobulin M gene in this species is well documented, as well as its major role in systemic immunity. To date, the IgT gene from O. niloticus has not been identified and, therefore, no information is available on the role of this immunoglobulin isotype in the immune response in tilapia. In the present work, novel secreted and membrane immunoglobulin T isotypes and a fragment of IgM were isolated from tilapia head kidney lymphocytes. Their transcriptional profiles were analyzed by quantitative PCR in larval development and in different tissues of healthy or lipopolysaccharide/Edwardsiella tarda-challenged tilapia adults. The presence of IgT and IgM were detected in early stages of larval development. Additionally, these genes exhibited differential expression profiles in basal conditions and after E. tarda infection in adult tilapia, in accord with the proposed effector functions of these immunoglobulins in the systemic and mucosal compartments. Our results suggest the potential involvement of this new Ig in mucosal immunity in tilapia.
Collapse
Affiliation(s)
- Janet Velázquez
- Veterinary Immunology Project, Animal Biotechnology Division, Center for Genetic Engineering and Biotechnology, P.O. Box 6162, Havana, 10600, Cuba
| | - Jannel Acosta
- Veterinary Immunology Project, Animal Biotechnology Division, Center for Genetic Engineering and Biotechnology, P.O. Box 6162, Havana, 10600, Cuba; University of Concepción, Interdisciplinary Center for Aquaculture Research of the UdeC (INCAR), O'higgins, 1695, Concepción, Chile
| | - Juana María Lugo
- Veterinary Immunology Project, Animal Biotechnology Division, Center for Genetic Engineering and Biotechnology, P.O. Box 6162, Havana, 10600, Cuba
| | - Eduardo Reyes
- Veterinary Immunology Project, Animal Biotechnology Division, Center for Genetic Engineering and Biotechnology, P.O. Box 6162, Havana, 10600, Cuba
| | - Fidel Herrera
- Veterinary Immunology Project, Animal Biotechnology Division, Center for Genetic Engineering and Biotechnology, P.O. Box 6162, Havana, 10600, Cuba
| | - Osmany González
- Veterinary Immunology Project, Animal Biotechnology Division, Center for Genetic Engineering and Biotechnology, P.O. Box 6162, Havana, 10600, Cuba
| | - Antonio Morales
- Veterinary Immunology Project, Animal Biotechnology Division, Center for Genetic Engineering and Biotechnology, P.O. Box 6162, Havana, 10600, Cuba
| | - Yamila Carpio
- Veterinary Immunology Project, Animal Biotechnology Division, Center for Genetic Engineering and Biotechnology, P.O. Box 6162, Havana, 10600, Cuba.
| | - Mario Pablo Estrada
- Veterinary Immunology Project, Animal Biotechnology Division, Center for Genetic Engineering and Biotechnology, P.O. Box 6162, Havana, 10600, Cuba.
| |
Collapse
|
21
|
Validation and Evaluation of Reference Genes for Quantitative Real-Time PCR in Macrobrachium Nipponense. Int J Mol Sci 2018; 19:ijms19082258. [PMID: 30071669 PMCID: PMC6121487 DOI: 10.3390/ijms19082258] [Citation(s) in RCA: 57] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2018] [Revised: 07/26/2018] [Accepted: 07/30/2018] [Indexed: 02/02/2023] Open
Abstract
Quantitative real-time PCR (qPCR) is widely used in molecular biology, although the accuracy of the quantitative results is determined by the stability of the reference genes used. Recent studies have investigated suitable reference genes for some crustaceans under various conditions, but studies in Macrobrachium nipponense are currently lacking. In this study, we selected the following seven genes from among 35 commonly used housekeeping genes as candidate qPCR reference genes for temporal and spatial expression: EIF (eukaryotic translation initiation factor 5A), 18S (18S ribosomal RNA), EF-1α (elongation factor-1α), GAPDH (glyceraldehyde-3-phosphate dehydrogenase), TUB (α-tubulin), β-act (β-actin), and RPL18 (Ribosomal protein L18). The stability of each reference gene was evaluated by GeNorm, NormFinder, BestKeeper, and comparative ∆C t methods, and was comprehensively ranked using RefFinder. RPL18 was shown to be the most suitable reference gene for adult M. nipponense tissues, while EIF was the most stable in different ovarian and embryo stages and in white spot syndrome virus infection, and β-act was the most stable reference gene under hypoxia stress. The reliability of the rankings was confirmed by RNA interference experiments. To the best of our knowledge, this represents the first systematic analysis of reference genes for qPCR experiments in M. nipponense, and the results will provide invaluable information for future research in closely related crustaceans.
Collapse
|
22
|
Abdel-Gawad FK, Osman O, Bassem SM, Nassar HF, Temraz TA, Elhaes H, Ibrahim M. Spectroscopic analyses and genotoxicity of dioxins in the aquatic environment of Alexandria. MARINE POLLUTION BULLETIN 2018; 127:618-625. [PMID: 29475705 DOI: 10.1016/j.marpolbul.2017.12.056] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/06/2017] [Revised: 12/18/2017] [Accepted: 12/21/2017] [Indexed: 06/08/2023]
Abstract
Dioxins have global concerns because of the bioaccumulation tendency and persistency in the environment. Water, seabream Pagrus auratus and seabass Dicentrarchus labrax samples were collected from Abu Qir, Alexandria to evaluate the concentration of dioxin. Fourier Transform Infrared Spectrometer (FTIR) and molecular modeling was applied for elucidating the molecular structure of fish samples. Furthermore, HPLC with UV detection was used to determine the concentration of dioxins (2,8-dichloro dibenzo-p-dioxin). RT-PCR assay was conducted to verify the expression of some immune genes in the fish species as a result of water pollution. The average detected concentrations varied from 0.2 to 1.3μg/l. Gene expression revealed that MHC class 1 and C3 were highly upregulated in liver and muscle of seabass and seabream while T2BP was highly regulated in seabass liver and seabream muscle and seabass muscle for transferrin, FTIR and molecular modeling indicate that dioxin finds its way to fish protein.
Collapse
Affiliation(s)
- Fagr Kh Abdel-Gawad
- Environmental Research Division, Centre of Excellence for Advanced Science, National Research Centre, 33 El-Bohouth St., 12622 Dokki, Giza, Egypt
| | - Osama Osman
- Spectroscopy Department, National Research Centre, 33 El-Bohouth St., 12622 Dokki, Giza, Egypt
| | - Samah M Bassem
- Environmental Research Division, Centre of Excellence for Advanced Science, National Research Centre, 33 El-Bohouth St., 12622 Dokki, Giza, Egypt
| | - Hossam F Nassar
- Environmental Sciences and Industrial Development Department, Faculty of Postgraduate Studies for Advanced Sciences (PSAS), Beni-Suef University, Beni-Suef, Egypt
| | - Tarek A Temraz
- Marine Science Department, Faculty of Science, Suez Canal University, Ismailia, Egypt
| | - Hanan Elhaes
- Faculty of Women for Arts, Science and Education, Physics Department, Ain Shams University, 11757 Cairo, Egypt
| | - Medhat Ibrahim
- Spectroscopy Department, National Research Centre, 33 El-Bohouth St., 12622 Dokki, Giza, Egypt.
| |
Collapse
|
23
|
Salah AS, El Nahas AF, Mahmoud S. Modulatory effect of different doses of β-1,3/1,6-glucan on the expression of antioxidant, inflammatory, stress and immune-related genes of Oreochromis niloticus challenged with Streptococcus iniae. FISH & SHELLFISH IMMUNOLOGY 2017; 70:204-213. [PMID: 28882806 DOI: 10.1016/j.fsi.2017.09.008] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/03/2017] [Revised: 08/25/2017] [Accepted: 09/01/2017] [Indexed: 06/07/2023]
Abstract
β-glucans are widely-known immunostimulants that are profusely used in aquaculture industry. The present study was conducted to evaluate the effect of different in-feed doses of β-1,3/1,6-glucans on the expression of antioxidant and stress-related genes (GST, HSP-70, Vtg), inflammation related genes (Il-8, TNFα, CXC-chemokine and CAS) and adaptive immune-related genes (MHC-IIβ, TLR-7, IgM-H, and Mx) of Oreochromis niloticus challenged and non-challenged with Streptococcus iniae. Six experimental groups were established: non-challenged control (non-supplemented diet), challenged control (non-supplemented diet), non-challenged supplemented with 0.1% β-glucan, challenged supplemented with 0.1% β-glucan, non-challenged supplemented with 0.2% β-glucan and challenged supplemented with 0.2% β-glucan. Fish were fed with β-glucan for 21 days prior challenge and then sampled after 1, 3 and 7 days post-challenge. In non-challenged group, variable effects of the two doses of β-Glucans on the expression of the studied genes were observed; 0.1% induced higher expression of HSP70, CXC chemokine, MHC-IIβ and MX genes. Meanwhile, 0.2% induced better effect on the expression of Vtg, TNF-α, CAS and IgM-H, and almost equal effects of both doses on GST and IL8. However, with the challenged group, 0.2% β-Glucans showed better effect than 0.1% at day one post challenge through significant up-regulation of GST, HSP, IL8, TNF-α, CXC, and MHC-IIβ, meanwhile, the effect of 0.1% was only on the expression of HSP70, MHC-IIβ, and TLR7 at day 3 post challenge. No stimulatory role for both doses of β-Glucans on the expression of almost all genes at day 7 post-challenge. We conclude that both doses of β-glucan can modulate the antioxidant, inflammation, stress and immune-related genes in Nile tilapia, moreover, 0.2% β-Glucans showed better protective effect with Streptococcus iniae challange.
Collapse
Affiliation(s)
- Abdallah S Salah
- Faculty of Aquatic and Fisheries Sciences, Kafr El Sheikh University, Egypt
| | - Abeer F El Nahas
- Animal Husbandry and Animal Wealth Department, Faculty of Veterinary Medicine, Alexandria University, Egypt.
| | - Shawky Mahmoud
- Department of Physiology, Faculty of Veterinary Medicine, Kafr El Sheikh University, Egypt
| |
Collapse
|
24
|
Huang Y, Tan H, Yu J, Chen Y, Guo Z, Wang G, Zhang Q, Chen J, Zhang L, Diao Y. Stable Internal Reference Genes for Normalizing Real-Time Quantitative PCR in Baphicacanthus cusia under Hormonal Stimuli and UV Irradiation, and in Different Plant Organs. FRONTIERS IN PLANT SCIENCE 2017; 8:668. [PMID: 28515733 PMCID: PMC5413499 DOI: 10.3389/fpls.2017.00668] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/07/2017] [Accepted: 04/11/2017] [Indexed: 05/16/2023]
Abstract
Baphicacanthus cusia (Nees) Bremek, the plant source for many kinds of drugs in traditional Chinese medicine, is widely distributed in South China, especially in Fujian. Recent studies about B. cusia mainly focus on its chemical composition and pharmacological effects, but further analysis of the plant's gene functions and expression is required to better understand the synthesis of its effective compounds. Real-time quantitative polymerase chain reaction (RT-qPCR) is a powerful method for gene expression analysis. It is necessary to select a suitable reference gene for expression normalization to ensure the accuracy of RT-qPCR results. Ten candidate reference genes were selected from the transcriptome datasets of B. cusia in this study, and the expression stability was assessed across 60 samples representing different tissues and organs under various conditions, including ultraviolet (UV) irradiation, hormonal stimuli (jasmonic acid methyl ester and abscisic acid), and in different plant organs. By employing different algorithms, such as geNorm, NormFinder, and BestKeeper, which are complementary approaches based on different statistical procedures, 18S rRNA was found to be the most stable gene under UV irradiation and hormonal stimuli, whereas ubiquitin-conjugating enzyme E2 was the best suitable gene for different plant organs. This novel study aimed to screen for suitable reference genes and corresponding primer pairs specifically designed for gene expression studies in B. cusia, in particular for RT-qPCR analyses.
Collapse
Affiliation(s)
- Yuxiang Huang
- School of Biomedical Sciences, Huaqiao UniversityQuanzhou, China
- School of Pharmacy, Quanzhou Medical CollegeQuanzhou, China
- School of Pharmacy, Second Military Medical UniversityShanghai, China
| | - Hexin Tan
- School of Pharmacy, Second Military Medical UniversityShanghai, China
| | - Jian Yu
- School of Pharmacy, Second Military Medical UniversityShanghai, China
| | - Yue Chen
- School of Biomedical Sciences, Huaqiao UniversityQuanzhou, China
- School of Pharmacy, Second Military Medical UniversityShanghai, China
| | - Zhiying Guo
- School of Biomedical Sciences, Huaqiao UniversityQuanzhou, China
- School of Pharmacy, Second Military Medical UniversityShanghai, China
| | - Guoquan Wang
- School of Biomedical Sciences, Huaqiao UniversityQuanzhou, China
| | - Qinglei Zhang
- School of Biomedical Sciences, Huaqiao UniversityQuanzhou, China
- School of Pharmacy, Second Military Medical UniversityShanghai, China
| | - Junfeng Chen
- Department of Pharmacy, Changzheng Hospital, Second Military Medical UniversityShanghai, China
| | - Lei Zhang
- School of Pharmacy, Second Military Medical UniversityShanghai, China
- *Correspondence: Lei Zhang
| | - Yong Diao
- School of Biomedical Sciences, Huaqiao UniversityQuanzhou, China
- Yong Diao
| |
Collapse
|
25
|
Wang E, Long B, Wang K, Wang J, He Y, Wang X, Yang Q, Liu T, Chen D, Geng Y, Huang X, Ouyang P, Lai W. Interleukin-8 holds promise to serve as a molecular adjuvant in DNA vaccination model against Streptococcus iniae infection in fish. Oncotarget 2016; 7:83938-83950. [PMID: 27911873 PMCID: PMC5356636 DOI: 10.18632/oncotarget.13728] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2016] [Accepted: 11/15/2016] [Indexed: 11/25/2022] Open
Abstract
DNA vaccines had been widely used in animal models against various viral infections, while it was not so convincing for many infectious diseases especially bacterial disease in aquaculture. Interleukin-8(IL-8) as one of the CXC chemokines, its immunological role and adjuvant potential which had been proved in mammals were rarely reported in fish species. In this study, recombination plasmid pcDNA3.1/IL-8(pcIL-8) was conducted and the capacity of IL-8 as molecular adjuvant was explored from several aspects by co-injecting with a DNA vaccine encoding α-enolase(pcENO) against Streptococcus iniae infection in channel catfish. The results suggested that co-injection of pcIL-8 with DNA vaccine increased the innate immunity and specific antibody levels, as well as increased the immune-related genes involving in pro-inflammatory response, humoral and cellular immunity. Moreover, pcIL-8 enhanced the immunoprotection of pcENO with the relative percent survival(RPS) of 60% to 80% against S.iniae infection at 4 week post vaccination(p.v.), with the significantly higher RPS of 73.33% in pcENO+pcIL-8 group compared with that of pcENO alone(53.33%) at challenge test of 8 weeks p.v. Taken together, these results indicate pcIL-8 as a molecular adjuvant co-injected with DNA vaccine not only improves the immunoprotection but also maintains long period of immunity for channel catfish against S.iniae infection. Our study signifies that IL-8 holds promise to serve as a potential adjuvant in DNA vaccines against bacterial infections for long time.
Collapse
Affiliation(s)
- Erlong Wang
- Department of Basic Veterinary, College of Veterinary Medicine, Sichuan Agricultural University, Chengdu, Sichuan, China
| | - Bo Long
- Department of Basic Veterinary, College of Veterinary Medicine, Sichuan Agricultural University, Chengdu, Sichuan, China
| | - Kaiyu Wang
- Department of Basic Veterinary, College of Veterinary Medicine, Sichuan Agricultural University, Chengdu, Sichuan, China
- Key Laboratory of Animal Disease and Human Health of Sichuan Province, Sichuan Agricultural University, Chengdu, Sichuan, China
| | - Jun Wang
- Department of Basic Veterinary, College of Veterinary Medicine, Sichuan Agricultural University, Chengdu, Sichuan, China
| | - Yang He
- Department of Basic Veterinary, College of Veterinary Medicine, Sichuan Agricultural University, Chengdu, Sichuan, China
| | - Xingli Wang
- Department of Basic Veterinary, College of Veterinary Medicine, Sichuan Agricultural University, Chengdu, Sichuan, China
| | - Qian Yang
- Department of Basic Veterinary, College of Veterinary Medicine, Sichuan Agricultural University, Chengdu, Sichuan, China
| | - Tao Liu
- Department of Basic Veterinary, College of Veterinary Medicine, Sichuan Agricultural University, Chengdu, Sichuan, China
| | - Defang Chen
- Department of Aquaculture, College of Animal Science and Technology, Sichuan Agricultural University, Chengdu, Sichuan, China
| | - Yi Geng
- Department of Basic Veterinary, College of Veterinary Medicine, Sichuan Agricultural University, Chengdu, Sichuan, China
- Key Laboratory of Animal Disease and Human Health of Sichuan Province, Sichuan Agricultural University, Chengdu, Sichuan, China
| | - Xiaoli Huang
- Department of Aquaculture, College of Animal Science and Technology, Sichuan Agricultural University, Chengdu, Sichuan, China
| | - Ping Ouyang
- Department of Basic Veterinary, College of Veterinary Medicine, Sichuan Agricultural University, Chengdu, Sichuan, China
| | - Weimin Lai
- Department of Basic Veterinary, College of Veterinary Medicine, Sichuan Agricultural University, Chengdu, Sichuan, China
| |
Collapse
|
26
|
Pu Y, Zhu J, Wang H, Zhang X, Hao J, Wu Y, Geng Y, Wang K, Li Z, Zhou J, Chen D. Molecular characterization and expression analysis of Hsp90 in Schizothorax prenanti. Cell Stress Chaperones 2016; 21:983-991. [PMID: 27527721 PMCID: PMC5083668 DOI: 10.1007/s12192-016-0723-3] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2016] [Revised: 07/11/2016] [Accepted: 07/17/2016] [Indexed: 11/25/2022] Open
Abstract
Aquatic animals suffer from various environmental stresses because the aquatic environment is a very complex system. To monitor the health status of fish, Hsp90 a potential early warning marker was determined in Schizothorax prenanti after infection with a bacterium. In this study, we cloned Hsp90 from S. prenanti for the first time. The full-length cDNA sequence of SpHsp90 was 2663 bp, contains an open reading frame of 2181 bp, and has a gene encoding 726 amino acids, an estimated molecular mass of 83.38 kDa, and a theoretical isoelectric point of 4.91. The SpHsp90 amino acid sequence has five conserved HSP90 family signatures and shares 87.0-95.5 % identity with other vertebrates. Phylogenetic analysis and structure comparison indicated that SpHsp90 should be a β isoform of the HSP90 family. SpHsp90 was ubiquitously expressed in all examined tissues, and the highest level of expression was in the kidney. After Streptococcus agalactiae infection, the level of SpHsp90 expression had significant changes (P < 0.05) in the hepatopancreas, spleen, kidney, and blood. The expression increased to the highest level at 6 h in the blood and at 24 h in the hepatopancreas, spleen, and kidney. The results suggested that the SpHsp90 gene could be induced by S. agalactiae in S. prenanti and that SpHsp90 may be involved in resistance to bacterial infection and provide an early warning information. The kidney is the most suitable for detecting SpHsp90 after bacterial infection.
Collapse
Affiliation(s)
- Yundan Pu
- Department of Aquaculture, College of Animal Science and Technology, Sichuan Agricultural University, WenJiang District Huimin Road No. 211, ChengDu, Sichuan Province 611130 China
| | - Jieyao Zhu
- Department of Aquaculture, College of Animal Science and Technology, Sichuan Agricultural University, WenJiang District Huimin Road No. 211, ChengDu, Sichuan Province 611130 China
| | - Hong Wang
- Department of Aquaculture, College of Animal Science and Technology, Sichuan Agricultural University, WenJiang District Huimin Road No. 211, ChengDu, Sichuan Province 611130 China
| | - Xin Zhang
- Department of Aquaculture, College of Animal Science and Technology, Sichuan Agricultural University, WenJiang District Huimin Road No. 211, ChengDu, Sichuan Province 611130 China
| | - Jin Hao
- Department of Aquaculture, College of Animal Science and Technology, Sichuan Agricultural University, WenJiang District Huimin Road No. 211, ChengDu, Sichuan Province 611130 China
| | - Yuanbin Wu
- Department of Aquaculture, College of Animal Science and Technology, Sichuan Agricultural University, WenJiang District Huimin Road No. 211, ChengDu, Sichuan Province 611130 China
| | - Yi Geng
- College of Veterinary Medicine, Sichuan Agricultural University, WenJiang District Huimin Road No. 211, ChengDu, Sichuan Province 611130 China
| | - Kaiyu Wang
- College of Veterinary Medicine, Sichuan Agricultural University, WenJiang District Huimin Road No. 211, ChengDu, Sichuan Province 611130 China
| | - Zhiqiong Li
- Department of Aquaculture, College of Animal Science and Technology, Sichuan Agricultural University, WenJiang District Huimin Road No. 211, ChengDu, Sichuan Province 611130 China
| | - Jian Zhou
- Fisheries Research Institute, Sichuan Academy of Agricultural Sciences, ChengDu, China
- Sichuan Agricultural University, WenJiang District Huimin Road No. 211, ChengDu, China
| | - Defang Chen
- Department of Aquaculture, College of Animal Science and Technology, Sichuan Agricultural University, WenJiang District Huimin Road No. 211, ChengDu, Sichuan Province 611130 China
- Fisheries Research Institute, Sichuan Academy of Agricultural Sciences, ChengDu, China
- Sichuan Agricultural University, WenJiang District Huimin Road No. 211, ChengDu, China
| |
Collapse
|
27
|
Li L, Xu X, Chen C, Shen Z. Genome-Wide Characterization and Expression Analysis of the Germin-Like Protein Family in Rice and Arabidopsis. Int J Mol Sci 2016; 17:E1622. [PMID: 27669230 PMCID: PMC5085655 DOI: 10.3390/ijms17101622] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2016] [Revised: 09/09/2016] [Accepted: 09/15/2016] [Indexed: 11/17/2022] Open
Abstract
Previous studies have shown that germin-like proteins (GLPs) are present ubiquitously in rice and Arabidopsis. However, the understanding regarding their role in development and abiotic/biotic stress resistance remains limited. In the present study, we report genome-wide identification, characterisation, subcellular localization, enzyme activity, and expression analysis of the GLP gene family in rice and Arabidopsis to study their functions. In total, 43 and 32 GLPs in the rice and Arabidopsis genome were identified based on a systematic analysis, respectively. The GLP genes were clustered into six clades based on phylogenetic analysis, and many stress and developmental-related cis-elements were detected in promoters of GLP genes. In addition, subcellular location and superoxide dismutase (SOD) analysis demonstrated that the random selected OsGLP genes on chromosomes 8 and 4 of rice were expressed in the cell wall with SOD activity. Overall, our results showed that tandem duplication events, especially the clusters of tandem duplication genes on chromosome 8 in rice, play a major role in expansion of the GLP family and thus increase our understanding of the role of the GLP family in abiotic/biotic stress and development.
Collapse
Affiliation(s)
- Lu Li
- College of Life Sciences, Nanjing Agricultural University, Nanjing 210095, China.
| | - Xihui Xu
- College of Life Sciences, Nanjing Agricultural University, Nanjing 210095, China.
| | - Chen Chen
- College of Life Sciences, Nanjing Agricultural University, Nanjing 210095, China.
| | - Zhenguo Shen
- College of Life Sciences, Nanjing Agricultural University, Nanjing 210095, China.
| |
Collapse
|
28
|
Shi C, Yang F, Zhu X, Du E, Yang Y, Wang S, Wu Q, Zhang Y. Evaluation of Housekeeping Genes for Quantitative Real-Time PCR Analysis of Bradysia odoriphaga (Diptera: Sciaridae). Int J Mol Sci 2016; 17:ijms17071034. [PMID: 27399679 PMCID: PMC4964410 DOI: 10.3390/ijms17071034] [Citation(s) in RCA: 50] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2016] [Revised: 06/15/2016] [Accepted: 06/20/2016] [Indexed: 11/16/2022] Open
Abstract
The soil insect Bradysia odoriphaga (Diptera: Sciaridae) causes substantial damage to Chinese chive. Suitable reference genes in B. odoriphaga (Bradysia odoriphaga) have yet to be identified for normalizing target gene expression among samples by quantitative real-time PCR (qRT-PCR). This study was focused on identifying the expression stability of 12 candidate housekeeping genes in B. odoriphaga under various experiment conditions. The final stability ranking of 12 housekeeping genes was obtained with RefFinder, and the most suitable number of reference genes was analyzed by GeNorm. The results revealed that the most appropriate sets of internal controls were RPS15, RPL18, and RPS18 across developmental phases; RPS15, RPL28, and GAPDH across temperatures; RPS15 and RPL18 across pesticide treatments; RSP5, RPS18, and SDHA across photoperiods; ACTb, RPS18, and RPS15 across diets; RPS13 and RPL28 across populations; and RPS15, ACTb, and RPS18 across all samples. The use of the most suitable reference genes versus an arbitrarily selected reference gene resulted in significant differences in the analysis of a target gene expression. HSP23 in B. odoriphaga was found to be up-regulated under low temperatures. These results will contribute to the standardization of qRT-PCR and will also be valuable for further research on gene function in B. odoriphaga.
Collapse
Affiliation(s)
- Caihua Shi
- College of Agriculture, Yangtze University, Jingzhou 434025, China.
| | - Fengshan Yang
- College of Life Science, Heilongjiang University, Harbin 150080, China.
| | - Xun Zhu
- Department of Plant Protection, Institute of Vegetables and Flowers, Chinese Academy of Agricultural Sciences, Beijing 100081, China.
| | - Erxia Du
- Department of Medicine, University of Connecticut Health Center, Farmington, CT 06030, USA.
| | - Yuting Yang
- College of Agriculture, Yangtze University, Jingzhou 434025, China.
| | - Shaoli Wang
- Department of Plant Protection, Institute of Vegetables and Flowers, Chinese Academy of Agricultural Sciences, Beijing 100081, China.
| | - Qingjun Wu
- Department of Plant Protection, Institute of Vegetables and Flowers, Chinese Academy of Agricultural Sciences, Beijing 100081, China.
| | - Youjun Zhang
- Department of Plant Protection, Institute of Vegetables and Flowers, Chinese Academy of Agricultural Sciences, Beijing 100081, China.
| |
Collapse
|
29
|
Pashay Ahi E, Walker BS, Lassiter CS, Jónsson ZO. Investigation of the effects of estrogen on skeletal gene expression during zebrafish larval head development. PeerJ 2016; 4:e1878. [PMID: 27069811 PMCID: PMC4824909 DOI: 10.7717/peerj.1878] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2016] [Accepted: 03/11/2016] [Indexed: 11/20/2022] Open
Abstract
The development of craniofacial skeletal structures requires well-orchestrated tissue interactions controlled by distinct molecular signals. Disruptions in normal function of these molecular signals have been associated with a wide range of craniofacial malformations. A pathway mediated by estrogens is one of those molecular signals that plays role in formation of bone and cartilage including craniofacial skeletogenesis. Studies in zebrafish have shown that while higher concentrations of 17-β estradiol (E 2) cause severe craniofacial defects, treatment with lower concentrations result in subtle changes in head morphology characterized with shorter snouts and flatter faces. The molecular basis for these morphological changes, particularly the subtle skeletal effects mediated by lower E 2 concentrations, remains unexplored. In the present study we address these effects at a molecular level by quantitative expression analysis of sets of candidate genes in developing heads of zebrafish larvae treated with two different E 2 concentrations. To this end, we first validated three suitable reference genes, ppia2, rpl8 and tbp, to permit sensitive quantitative real-time PCR analysis. Next, we profiled the expression of 28 skeletogenesis-associated genes that potentially respond to estrogen signals and play role in craniofacial development. We found E 2 mediated differential expression of genes involved in extracellular matrix (ECM) remodelling, mmp2/9/13, sparc and timp2a, as well as components of skeletogenic pathways, bmp2a, erf, ptch1/2, rankl, rarab and sfrp1a. Furthermore, we identified a co-expressed network of genes, including cpn1, dnajc3, esr1, lman1, rrbp1a, ssr1 and tram1 with a stronger inductive response to a lower dose of E 2 during larval head development.
Collapse
Affiliation(s)
- Ehsan Pashay Ahi
- Institute of Life and Environmental Sciences, University of Iceland , Reykjavik , Iceland
| | | | | | - Zophonías O Jónsson
- Institute of Life and Environmental Sciences, University of Iceland, Reykjavik, Iceland; Biomedical Center, University of Iceland, Reykjavik, Iceland
| |
Collapse
|