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Zeb I, Parizi LF, Israr M, da Silva Vaz I, Ali A. Cross-species immunoprotective antigens (subolesin, ferritin 2 and P0) provide protection against Rhipicephalus sanguineus sensu lato. Parasit Vectors 2024; 17:3. [PMID: 38172894 PMCID: PMC10765945 DOI: 10.1186/s13071-023-06079-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2023] [Accepted: 11/30/2023] [Indexed: 01/05/2024] Open
Abstract
BACKGROUND Tick control is mostly hampered by the rise of acaricide-resistant tick populations. Significant efforts have focused on developing alternative control methods, including cross-species protective and/or cocktail-based anti-tick vaccines, to achieve protection against various tick species. METHODS In this study, full-length open reading frames encoding subolesin (SUB) from Rhipicephalus microplus and ferritin 2 (FER2) from Hyalomma anatolicum as well as the partial 60S acidic ribosomal protein (P0) from R. microplus were cloned, expressed in Escherichia coli and used as vaccine antigens against Rhipicephalus sanguineus sensu lato (R. sanguineus s.l.) infestation in rabbits. RESULTS In silico analyses revealed that the SUB, P0 and FER2 proteins were antigenic and displayed limited similarity to the host's homologous proteins. The proteins shared identities of 97.5%, 100% and 89.5% with their SUB, P0 and FER2 R. sanguineus s.l. orthologous sequences, respectively. Antibodies against each recombinant protein cross-recognized the native proteins in the different tissues and developmental stages of R. sanguineus s.l. Overall efficacy of the SUB, FER2 and cocktail (SUB+FER2+P0) vaccines against R. sanguineus s.l. infestation was 86.3%, 95.9% and 90.9%, respectively. CONCLUSIONS Both mono-antigen and the cocktail anti-tick vaccines affected the biological parameters of R. sanguineus s.l. infestation in the rabbit model, which could be extrapolated to its infested host under natural conditions. These findings support the possibility of using mono-antigenic and cocktail-based vaccines for large-scale anti-tick vaccine development against multiple tick species.
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Affiliation(s)
- Ismail Zeb
- Department of Zoology, Abdul Wali Khan University Mardan, Mardan, 23200, Pakistan
| | - Luís Fernando Parizi
- Centro de Biotecnologia and Faculdade de Veterinária, Universidade Federal do Rio Grande do Sul, Campus do Vale, Porto Alegre, RS, 91501-970, Brazil
| | | | - Itabajara da Silva Vaz
- Centro de Biotecnologia and Faculdade de Veterinária, Universidade Federal do Rio Grande do Sul, Campus do Vale, Porto Alegre, RS, 91501-970, Brazil
| | - Abid Ali
- Department of Zoology, Abdul Wali Khan University Mardan, Mardan, 23200, Pakistan.
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Zeb I, Almutairi MM, Alouffi A, Islam N, Parizi LF, Safi SZ, Tanaka T, da Silva Vaz I, Ali A. Low Genetic Polymorphism in the Immunogenic Sequences of Rhipicephalus microplus Clade C. Vaccines (Basel) 2022; 10:1909. [PMID: 36423005 PMCID: PMC9697226 DOI: 10.3390/vaccines10111909] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2022] [Revised: 10/25/2022] [Accepted: 10/28/2022] [Indexed: 02/06/2024] Open
Abstract
Rhipicephalus microplus tick highly affects the veterinary sector throughout the world. Different tick control methods have been adopted, and the identification of tick-derived highly immunogenic sequences for the development of an anti-tick vaccine has emerged as a successful alternate. This study aimed to characterize immunogenic sequences from R. microplus ticks prevalent in Pakistan. Ticks collected in the field were morphologically identified and subjected to DNA and RNA extraction. Ticks were molecularly identified based on the partial mitochondrial cytochrome C oxidase subunit (cox) sequence and screened for piroplasms (Theileria/Babesia spp.), Rickettsia spp., and Anaplasma spp. PCR-based pathogens-free R. microplus-derived cDNA was used for the amplification of full-length cysteine protease inhibitor (cystatin 2b), cathepsin L-like cysteine proteinase (cathepsin-L), glutathione S-transferase (GST), ferritin 1, 60S acidic ribosomal protein (P0), aquaporin 2, ATAQ, and R. microplus 05 antigen (Rm05Uy) coding sequences. The cox sequence revealed 100% identity with the nucleotide sequences of Pakistan's formerly reported R. microplus, and full-length immunogenic sequences revealed maximum identities to the most similar sequences reported from India, China, Cuba, USA, Brazil, Egypt, Mexico, Israel, and Uruguay. Low nonsynonymous polymorphisms were observed in ATAQ (1.5%), cathepsin-L (0.6%), and aquaporin 2 (0.4%) sequences compared to the homologous sequences from Mexico, India, and the USA, respectively. Based on the cox sequence, R. microplus was phylogenetically assembled in clade C, which includes R. microplus from Pakistan, Myanmar, Malaysia, Thailand, Bangladesh, and India. In the phylogenetic trees, the cystatin 2b, cathepsin-L, ferritin 1, and aquaporin 2 sequences were clustered with the most similar available sequences of R. microplus, P0 with R. microplus, R. sanguineus and R. haemaphysaloides, and GST, ATAQ, and Rm05Uy with R. microplus and R. annulatus. This is the first report on the molecular characterization of clade C R. microplus-derived immunogenic sequences.
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Affiliation(s)
- Ismail Zeb
- Department of Zoology, Abdul Wali Khan University Mardan, Mardan 23200, Pakistan
| | - Mashal M Almutairi
- Department of Pharmacology and Toxicology, College of Pharmacy, King Saud University, Riyadh 11451, Saudi Arabia
| | - Abdulaziz Alouffi
- King Abdulaziz City for Science and Technology, Riyadh 12354, Saudi Arabia
| | - Nabila Islam
- Department of Chemistry, Abdul Wali Khan University Mardan, Mardan 23200, Pakistan
| | - Luís Fernando Parizi
- Centro de Biotecnologia and Faculdade de Veterinária, Universidade Federal do Rio Grande do Sul, Campus do Vale, Porto Alegre 91501-970, RS, Brazil
| | - Sher Zaman Safi
- Faculty of Medicine, Bioscience and Nursing, MAHSA University, Jenjarom 42610, Malaysia
| | - Tetsuya Tanaka
- Laboratory of Infectious Diseases, Joint Faculty of Veterinary Medicine, Kagoshima University, 1-21-24 Korimoto, Kagoshima 890-0065, Japan
| | - Itabajara da Silva Vaz
- Centro de Biotecnologia and Faculdade de Veterinária, Universidade Federal do Rio Grande do Sul, Campus do Vale, Porto Alegre 91501-970, RS, Brazil
| | - Abid Ali
- Department of Zoology, Abdul Wali Khan University Mardan, Mardan 23200, Pakistan
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Lu J, Wang K, Gao Z, Zhang S, Li H, Shi Y, Song X, Liu J, Yu Z, Yang X. Doenitin-1: A novel Kunitz family protein with versatile functions during feeding and reproduction of the tick Haemaphysalis doenitzi. Front Vet Sci 2022; 9:872244. [PMID: 36032296 PMCID: PMC9399790 DOI: 10.3389/fvets.2022.872244] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2022] [Accepted: 07/13/2022] [Indexed: 11/13/2022] Open
Abstract
As obligate blood-feeding ectoparasites, ticks secrete a great diversity of antithrombin molecules during feeding. In this study, a novel antithrombin gene named Doenitin-1 was characterized from the tick Haemaphysalis doenitzi. It has an open reading frame size of 426 bp; it encodes 141 amino acids and has a predicted molecular weight of 15.8 kDa. The fibrinogen coagulation test showed that the time of coagulation was increased significantly with increase in rDoenitin-1 protein concentration, and the activated partial thromboplastin time (APTT) and prothrombin time (PT) assays showed that rDoenitin-1 significantly prolonged the coagulation time of APTT, indicating that rDoenitin-1 has an anticoagulant activity in vitro. In addition, rDoenitin-1 presents a significant inhibitory activity in thrombin and cathepsin G. The hemolysis rate of rDoenitin-1 in healthy human blood cells was 4.25%, and no obvious hemolysis activity was observed. The comparison with other life stages shows that the higher expression occurs in adults, and tissue comparison indicated a higher expression in the midgut. The RNAi results indicated that interference of Doenitin-1 significantly reduced the engorgement rate and egg hatchability of H. doenitzi, and that the engorged body weight was slightly reduced. In conclusion, the results suggested that the novel gene Doenitin-1 functions in blood-feeding of H. doenitzi and performs various functions during feeding and reproduction of H. doenitzi. Doenitin-1 may be a potential vaccine candidate for tick control and for developing new antithrombotic drugs in the future.
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Sabadin GA, Salomon TB, Leite MS, Benfato MS, Oliveira PL, da Silva Vaz I. An insight into the functional role of antioxidant and detoxification enzymes in adult Rhipicephalus microplus female ticks. Parasitol Int 2020; 81:102274. [PMID: 33352319 DOI: 10.1016/j.parint.2020.102274] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2020] [Revised: 12/12/2020] [Accepted: 12/14/2020] [Indexed: 10/22/2022]
Abstract
Ticks have developed physiological adaptations to transport, store, metabolize and secrete toxic components from the diet and environment. Different classes of enzymes are involved in these processes, however, the role of several of them is not yet characterized in Rhipicephalus microplus. In this context, this work investigated the action of antioxidant and detoxification enzymes, as well as the levels of essential cellular reductants in R. microplus partially engorged females (PEF) and fully engorged females (FEF). Results demonstrated that enzymes transcriptional levels and enzymatic activity from ovary and fat body were higher in PEF than in FEF, except for ovary Glutathione peroxidase (GPx), which was the only enzyme showing highest activity in the FEF stage. These results indicated a higher demand for antioxidant potential in these organs at the initial feeding phase than during egg-laying. In midgut, however, there was more variability in the transcriptional levels and activity of the different enzymes between the PEF and FEF phases. Similar NADPH levels were found in PEF and FEF phases, suggesting a remarkable capacity to maintain a regular supply of reducing power, despite the developmental changes and large intake of heme and iron. However, reduced glutathione (GSH) levels were variable between PEF and FEF when distinct organs were compared. Taken together, our data suggest a higher demand for reducing potential in FEF ticks. The silencing of catalase (CAT) or thioredoxin reductase (TRx) genes in females did not impair feeding, egg-laying capacity, or larvae hatching. CAT-silenced ticks had increased ovary peroxidase activity, a possible compensatory antioxidant mechanism. Altogether, the results shed light on the complexity of the antioxidant and detoxification enzyme system in ticks and its involvement in different physiological mechanisms.
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Affiliation(s)
- Gabriela A Sabadin
- Centro de Biotecnologia, Universidade Federal do Rio Grande do Sul, Avenida Bento Gonçalves, 9500 Porto Alegre, RS, Brazil
| | - Tiago B Salomon
- Instituto de Biociências, Universidade Federal do Rio Grande do Sul, Avenida Bento Gonçalves, 9500 Porto Alegre, RS, Brazil
| | - Milane S Leite
- Instituto de Bioquímica Médica Leopoldo de Meis, Universidade Federal do Rio de Janeiro, Rio de Janeiro, RJ, Brazil
| | - Mara S Benfato
- Instituto de Biociências, Universidade Federal do Rio Grande do Sul, Avenida Bento Gonçalves, 9500 Porto Alegre, RS, Brazil
| | - Pedro L Oliveira
- Instituto de Bioquímica Médica Leopoldo de Meis, Universidade Federal do Rio de Janeiro, Rio de Janeiro, RJ, Brazil; Instituto Nacional de Ciência e Tecnologia em Entomologia Molecular (INCT-EM), Brazil
| | - Itabajara da Silva Vaz
- Centro de Biotecnologia, Universidade Federal do Rio Grande do Sul, Avenida Bento Gonçalves, 9500 Porto Alegre, RS, Brazil; Instituto Nacional de Ciência e Tecnologia em Entomologia Molecular (INCT-EM), Brazil; Faculdade de Veterinária, Universidade Federal do Rio Grande do Sul, Avenida Bento Gonçalves, 9090 Porto Alegre, RS, Brazil.
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Luo J, Shen H, Ren Q, Guan G, Zhao B, Yin H, Chen R, Zhao H, Luo J, Li X, Liu G. Characterization of an MLP Homologue from Haemaphysalis longicornis (Acari: Ixodidae) Ticks. Pathogens 2020; 9:pathogens9040284. [PMID: 32295244 PMCID: PMC7238268 DOI: 10.3390/pathogens9040284] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2020] [Revised: 03/27/2020] [Accepted: 04/09/2020] [Indexed: 12/18/2022] Open
Abstract
Members of the cysteine-rich protein (CRP) family are known to participate in muscle development in vertebrates. Muscle LIM protein (MLP) belongs to the CRP family and has an important function in the differentiation and proliferation of muscle cells. In this study, the full-length cDNA encoding MLP from Haemaphysalis longicornis (H. longicornis; HLMLP) ticks was obtained by 5' rapid amplification of cDNA ends (RACE). To verify the transcriptional status of MLP in ticks, HLMLP gene expression was assessed during various developmental stages by real-time PCR (RT-PCR). Interestingly, HLMLP expression in the integument was significantly (P < 0.01) higher than that observed in other tested tissues of engorged adult ticks. In addition, HLMLP mRNA levels were significantly downregulated in response to thermal stress at 4 °C for 48 h. Furthermore, recombinant HLMLP was expressed in Escherichia coli, and Western blot analysis showed that rabbit antiserum against H. longicornis adults recognized HLMLP and MLPs from different ticks. Ten 3-month-old rabbits that had never been exposed to ticks were used for the immunization and challenge experiments. The rabbits were divided into two groups of five rabbits each, where rabbits in the first group were immunized with HLMLP, while those in the second group were immunized with phosphate-buffered saline (PBS) diluent as controls. The vaccination of rabbits with the recombinant HLMLP conferred partial protective immunity against ticks, resulting in 20.00% mortality and a 17.44% reduction in the engorgement weight of adult ticks. These results suggest that HLMLP is not ideal as a candidate for use in anti-tick vaccines. However, the results of this study generated novel information on the MLP gene in H. longicornis and provide a basis for further investigation of the function of this gene that could potentially lead to a better understanding of the mechanism of myofiber determination and transformation.
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Affiliation(s)
- Jin Luo
- State Key Laboratory of Veterinary Etiological Biology, Key Laboratory of Veterinary Parasitology of Gansu Province, Lanzhou Veterinary Research Institute, Chinese Academy of Agricultural Science, Xujiaping 1, Lanzhou 730046, China; (J.L.); (H.S.); (Q.R.); (G.G.); (H.Y.); (J.L.)
- MOE Joint International Research Laboratory of Animal Health and Food Safety, College of Veterinary Medicine, Nanjing Agricultural University, Nanjing 210095, China
| | - Hui Shen
- State Key Laboratory of Veterinary Etiological Biology, Key Laboratory of Veterinary Parasitology of Gansu Province, Lanzhou Veterinary Research Institute, Chinese Academy of Agricultural Science, Xujiaping 1, Lanzhou 730046, China; (J.L.); (H.S.); (Q.R.); (G.G.); (H.Y.); (J.L.)
| | - Qiaoyun Ren
- State Key Laboratory of Veterinary Etiological Biology, Key Laboratory of Veterinary Parasitology of Gansu Province, Lanzhou Veterinary Research Institute, Chinese Academy of Agricultural Science, Xujiaping 1, Lanzhou 730046, China; (J.L.); (H.S.); (Q.R.); (G.G.); (H.Y.); (J.L.)
| | - Guiquan Guan
- State Key Laboratory of Veterinary Etiological Biology, Key Laboratory of Veterinary Parasitology of Gansu Province, Lanzhou Veterinary Research Institute, Chinese Academy of Agricultural Science, Xujiaping 1, Lanzhou 730046, China; (J.L.); (H.S.); (Q.R.); (G.G.); (H.Y.); (J.L.)
| | - Bo Zhao
- Gansu Agriculture Technology College, Duanjiatan 425, Lanzhou 730030, China;
| | - Hong Yin
- State Key Laboratory of Veterinary Etiological Biology, Key Laboratory of Veterinary Parasitology of Gansu Province, Lanzhou Veterinary Research Institute, Chinese Academy of Agricultural Science, Xujiaping 1, Lanzhou 730046, China; (J.L.); (H.S.); (Q.R.); (G.G.); (H.Y.); (J.L.)
- Jiangsu Co-Innovation Center for the Prevention and Control of Important Animal Infectious Disease and Zoonose, Yangzhou University, Yangzhou 225009, China
| | - Ronggui Chen
- Ili Center of Animal Disease Control and Diagnosis, Ili 835000, China;
| | - Hongying Zhao
- Chapchal Sibo Autonomous County Animal Husbandry and Veterinary Station, Chapchal 835400, China;
| | - Jianxun Luo
- State Key Laboratory of Veterinary Etiological Biology, Key Laboratory of Veterinary Parasitology of Gansu Province, Lanzhou Veterinary Research Institute, Chinese Academy of Agricultural Science, Xujiaping 1, Lanzhou 730046, China; (J.L.); (H.S.); (Q.R.); (G.G.); (H.Y.); (J.L.)
| | - Xiangrui Li
- MOE Joint International Research Laboratory of Animal Health and Food Safety, College of Veterinary Medicine, Nanjing Agricultural University, Nanjing 210095, China
- Correspondence: (X.L.); (G.L.)
| | - Guangyuan Liu
- State Key Laboratory of Veterinary Etiological Biology, Key Laboratory of Veterinary Parasitology of Gansu Province, Lanzhou Veterinary Research Institute, Chinese Academy of Agricultural Science, Xujiaping 1, Lanzhou 730046, China; (J.L.); (H.S.); (Q.R.); (G.G.); (H.Y.); (J.L.)
- Correspondence: (X.L.); (G.L.)
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Hernandez EP, Kusakisako K, Hatta T, Tanaka T. Characterization of an iron-inducible Haemaphysalis longicornis tick-derived promoter in an Ixodes scapularis-derived tick cell line (ISE6). Parasit Vectors 2019; 12:321. [PMID: 31238993 PMCID: PMC6593522 DOI: 10.1186/s13071-019-3574-9] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2019] [Accepted: 06/19/2019] [Indexed: 12/20/2022] Open
Abstract
Background Ticks are important vectors of disease-causing pathogens. With the rise of resistance to chemical acaricides, alternative methods in tick control are warranted. Gene manipulation has been successful in controlling mosquitoes and mosquito-borne diseases and is now looked upon as a candidate method to control ticks and tick-borne pathogens. Our previous study has identified the actin and ferritin promoter regions in the Haemaphysalis longicornis tick. Results Here, the ferritin-derived promoter from the H. longicornis tick was characterized in silico, and the core promoter sequences and some of its important components were identified. Several truncations of the promoter region were created and inserted to a reporter plasmid to determine the important components for its activity. The activities of the truncated promoters on the Ixodes scapularis tick cell line (ISE6) were measured via a dual luciferase assay using experimental and control reporter genes. To induce the promoter’s activity, transfected ISE6 cells were exposed to ferrous sulfate. The 639 nucleotides truncated promoter showed the highest activity on ISE6 cells when exposed to 1 mM ferrous sulfate. Conclusion In this study, we characterized an iron-inducible tick promoter that could be a valuable tool in the development of a gene-manipulation system to control ticks and tick-borne pathogens. Electronic supplementary material The online version of this article (10.1186/s13071-019-3574-9) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Emmanuel Pacia Hernandez
- Laboratory of Infectious Diseases, Joint Faculty of Veterinary Medicine, Kagoshima University, 1-21-24 Korimoto, Kagoshima, 890-0056, Japan.,Department of Pathological and Preventive Veterinary Science, The United Graduate School of Veterinary Science, Yamaguchi University, Yoshida, Yamaguchi, 753-8515, Japan
| | - Kodai Kusakisako
- Laboratory of Infectious Diseases, Joint Faculty of Veterinary Medicine, Kagoshima University, 1-21-24 Korimoto, Kagoshima, 890-0056, Japan.,Laboratory of Parasitology, Graduate School of Veterinary Medicine, Hokkaido University, Sapporo, Hokkaido, 060-0818, Japan
| | - Takeshi Hatta
- Department of Parasitology, Kitasato University School of Medicine, Kitasato, Minami, Sagamihara, Kanagawa, 252-0374, Japan
| | - Tetsuya Tanaka
- Laboratory of Infectious Diseases, Joint Faculty of Veterinary Medicine, Kagoshima University, 1-21-24 Korimoto, Kagoshima, 890-0056, Japan. .,Department of Pathological and Preventive Veterinary Science, The United Graduate School of Veterinary Science, Yamaguchi University, Yoshida, Yamaguchi, 753-8515, Japan.
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Liu L, Liu YS, Liu GH, Cheng TY. Proteomics analysis of faecal proteins in the tick Haemaphysalis flava. Parasit Vectors 2018; 11:89. [PMID: 29422072 PMCID: PMC5806362 DOI: 10.1186/s13071-018-2673-3] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2017] [Accepted: 01/24/2018] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND Ticks and tick-borne diseases are of major public health concern. Currently, development of vaccines against ticks is considered crucial for their control. A critical step in this process is the screening of viable antigens. Faeces are byproducts of digestion and blood meal utilization, and partly reflect the vitality and vector potential of ticks. However, an integrated analysis of proteins in tick faeces is lacking. The present study explored the protein components in the faeces of the tick Haemaphysalis flava, by liquid chromatography-tandem mass spectrometry (LC/MS-MS) to identify potential protein antigens for vaccine development against ticks. METHODS Faeces from adult H. flava engorged females were collected. Proteins were extracted from faeces, and the trypsin-digested peptides were analyzed by LC/MS-MS. High confidence proteins were identified based on unique peptides revealed by MS. Potential faecal protein genes, as well as their sources, were also characterized by searching previous transcriptome datasets from the salivary glands and midgut of H. flava. RESULTS In total, 21 were recognized with confidence. Amongst these, 18 were of likely tick origin, while three proteins (serum albumin, haemoglobin α and β subunits) were likely from hosts. Seventeen unigenes corresponding to these proteins were retrieved by searching our previous H. flava salivary glands and midgut transcriptomic datasets. Some proteins were reported to prevent blood clotting, play a role in immunity and antibiosis, and formation of musculature. The functions of the remaining proteins are unknown. CONCLUSIONS Identifying antigens for tick vaccine development is feasible by analyzing the faecal proteome as well as the transcriptomes of salivary glands and midguts. The vast number of proteins detected in tick faeces highlights the complexity of blood digestion in ticks, a field that needs more investigation.
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Affiliation(s)
- Lei Liu
- College of Veterinary Medicine, Hunan Collaborative Innovation Center of Safety Production of Livestock and Poultry, Hunan Agricultural University, Changsha, Hunan Province, 410128, People's Republic of China
| | - Yi-Song Liu
- College of Veterinary Medicine, Hunan Collaborative Innovation Center of Safety Production of Livestock and Poultry, Hunan Agricultural University, Changsha, Hunan Province, 410128, People's Republic of China
| | - Guo-Hua Liu
- College of Veterinary Medicine, Hunan Collaborative Innovation Center of Safety Production of Livestock and Poultry, Hunan Agricultural University, Changsha, Hunan Province, 410128, People's Republic of China
| | - Tian-Yin Cheng
- College of Veterinary Medicine, Hunan Collaborative Innovation Center of Safety Production of Livestock and Poultry, Hunan Agricultural University, Changsha, Hunan Province, 410128, People's Republic of China.
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Liu L, Cheng TY, He XM. Proteomic profiling of the midgut contents of Haemaphysalis flava. Ticks Tick Borne Dis 2018; 9:490-495. [PMID: 29371124 DOI: 10.1016/j.ttbdis.2018.01.008] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2017] [Revised: 01/06/2018] [Accepted: 01/13/2018] [Indexed: 12/12/2022]
Abstract
Scant information is available regarding the proteins involved in blood meal processing in ticks. Here, we aimed to highlight the midgut proteins involved in preventing blood meal coagulation, and in facilitating intracellular digestion in the tick Haemaphysalis flava. Proteins were extracted from the midgut contents of fully engorged and partially engorged ticks. We used liquid chromatography tandem-mass spectrometry (LC-MS/MS) analysis to identify 131 unique peptides, and 102 proteins. Of these, 15 proteins, each with at least two unique peptides, were recognized with high confidence. We also retrieved 18 unigenes from our previous published transcriptomic libraries of the midguts and salivary glands of H. flava, and inferred the primary structures of nine proteins and fragments of five proteins. There were 23 and 21 unique proteins in the midgut contents of fully engorged and partially engorged ticks, respectively. We detected 58 shared proteins in the midgut contents of both fully engorged and partially engorged ticks. Of these, seven were significantly differentially expressed between fully engorged and partially engorged ticks: actin, calmodulin, elongation factor-1α, hsp90, multifunctional chaperone, tubulin α, and tubulin β. Our results demonstrated that the proteome of the midgut contents, combined with the transcriptome of the midgut, was a viable method for the reinforcement of protein identification. This method will facilitate further study of blood meal processing by ticks, as well as the identification of clues for tick infestation control. The existence of numerous proteins detected in the midgut contents also highlight the complexity of blood digestion in ticks; this area is in need of further investigation.
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Affiliation(s)
- Lei Liu
- College of Veterinary Medicine, Hunan Collaborative Innovation Center of Safety Production of Livestock and Poultry, Hunan Agricultural University, Changsha, China
| | - Tian-Yin Cheng
- College of Veterinary Medicine, Hunan Collaborative Innovation Center of Safety Production of Livestock and Poultry, Hunan Agricultural University, Changsha, China.
| | - Xiao-Ming He
- College of Veterinary Medicine, Hunan Collaborative Innovation Center of Safety Production of Livestock and Poultry, Hunan Agricultural University, Changsha, China
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Koh-Tan HHC, Strachan E, Cooper K, Bell-Sakyi L, Jonsson NN. Identification of a novel β-adrenergic octopamine receptor-like gene (βAOR-like) and increased ATP-binding cassette B10 (ABCB10) expression in a Rhipicephalus microplus cell line derived from acaricide-resistant ticks. Parasit Vectors 2016; 9:425. [PMID: 27484910 PMCID: PMC4970269 DOI: 10.1186/s13071-016-1708-x] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2016] [Accepted: 07/17/2016] [Indexed: 11/26/2022] Open
Abstract
Background The cattle tick Rhipicephalus (Boophilus) microplus is an economically important parasite of livestock. Effective control of ticks using acaricides is threatened by the emergence of resistance to many existing compounds. Several continuous R. microplus cell lines have been established and provide an under-utilised resource for studies into acaricide targets and potential genetic mutations associated with resistance. As a first step to genetic studies using these resources, this study aimed to determine the presence or absence of two genes and their transcripts that have been linked with acaricide function in cattle ticks: β-adrenergic octopamine receptor (βAOR, associated with amitraz resistance) and ATP-binding cassette B10 (ABCB10, associated with macrocyclic lactone resistance) in six R. microplus cell lines, five other Rhipicephalus spp. cell lines and three cell lines representing other tick genera (Amblyomma variegatum, Ixodes ricinus and Hyalomma anatolicum). Methods End-point polymerase chain reaction (PCR) was used for detection of the βAOR gene and transcripts in DNA and RNA extracted from the tick cell lines, followed by capillary sequencing of amplicons. Quantitative real-time PCR (qPCR) was performed to determine the levels of expression of ABCB10. Results βAOR gene expression was detected in all Rhipicephalus spp. cell lines. We observed a second amplicon of approximately 220 bp for the βAOR gene in the R. microplus cell line BME/CTVM6, derived from acaricide-resistant ticks. Sequencing of this transcript variant identified a 36 bp insertion in the βAOR gene, leading to a 12-amino acid insertion (LLKTLALVTIIS) in the first transmembrane domain of the protein. In addition, nine synonymous SNPs were also discovered in R. appendiculatus, R. evertsi and R. sanguineus cell lines. Some of these SNPs appear to be unique to each species, providing potential tools for differentiating the tick species. The BME/CTVM6 cell line had significantly higher ABCB10 (P = 0.002) expression than the other R. microplus cell lines. Conclusions The present study has identified a new βAOR gene and demonstrated a higher ABCB10 expression level in the BME/CTVM6 cell line, indicating that tick cell lines provide a useful experimental tool for acaricide resistance studies and further elucidation of tick genetics. Electronic supplementary material The online version of this article (doi:10.1186/s13071-016-1708-x) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- H H Caline Koh-Tan
- Institute of Biodiversity, Animal Health and Comparative Medicine, University of Glasgow, McCall Building, Bearsden Road, Glasgow, G61 1QH, UK
| | - Erin Strachan
- School of Veterinary Medicine, University of Glasgow, Glasgow, G61 1QH, UK
| | - Katherine Cooper
- School of Veterinary Medicine, University of Glasgow, Glasgow, G61 1QH, UK
| | - Lesley Bell-Sakyi
- The Pirbright Institute, Ash Road, Pirbright, Woking, Surrey, GU24 0NF, UK
| | - Nicholas N Jonsson
- Institute of Biodiversity, Animal Health and Comparative Medicine, University of Glasgow, McCall Building, Bearsden Road, Glasgow, G61 1QH, UK.
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10
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ATP Binding Cassette Transporter Mediates Both Heme and Pesticide Detoxification in Tick Midgut Cells. PLoS One 2015; 10:e0134779. [PMID: 26258982 PMCID: PMC4530934 DOI: 10.1371/journal.pone.0134779] [Citation(s) in RCA: 41] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2012] [Accepted: 07/14/2015] [Indexed: 11/23/2022] Open
Abstract
In ticks, the digestion of blood occurs intracellularly and proteolytic digestion of hemoglobin takes place in a dedicated type of lysosome, the digest vesicle, followed by transfer of the heme moiety of hemoglobin to a specialized organelle that accumulates large heme aggregates, called hemosomes. In the present work, we studied the uptake of fluorescent metalloporphyrins, used as heme analogs, and amitraz, one of the most regularly used acaricides to control cattle tick infestations, by Rhipicephalus (Boophilus) microplus midgut cells. Both compounds were taken up by midgut cells in vitro and accumulated inside the hemosomes. Transport of both molecules was sensitive to cyclosporine A (CsA), a well-known inhibitor of ATP binding cassette (ABC) transporters. Rhodamine 123, a fluorescent probe that is also a recognized ABC substrate, was similarly directed to the hemosome in a CsA-sensitive manner. Using an antibody against conserved domain of PgP-1-type ABC transporter, we were able to immunolocalize PgP-1 in the digest vesicle membranes. Comparison between two R. microplus strains that were resistant and susceptible to amitraz revealed that the resistant strain detoxified both amitraz and Sn-Pp IX more efficiently than the susceptible strain, a process that was also sensitive to CsA. A transcript containing an ABC transporter signature exhibited 2.5-fold increased expression in the amitraz-resistant strain when compared with the susceptible strain. RNAi-induced down-regulation of this ABC transporter led to the accumulation of metalloporphyrin in the digestive vacuole, interrupting heme traffic to the hemosome. This evidence further confirms that this transcript codes for a heme transporter. This is the first report of heme transport in a blood-feeding organism. While the primary physiological function of the hemosome is to detoxify heme and attenuate its toxicity, we suggest that the use of this acaricide detoxification pathway by ticks may represent a new molecular mechanism of resistance to pesticides.
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11
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Flores Fernández JM, Gutiérrez Ortega A, Rosario Cruz R, Padilla Camberos E, Alvarez AH, Martínez Velázquez M. Molecular cloning and characterization of two novel autophagy-related genes belonging to the ATG8 family from the cattle tick Rhipicephalus (Boophilus) microplus (Acari: Ixodidae). EXPERIMENTAL & APPLIED ACAROLOGY 2014; 64:533-542. [PMID: 25039003 DOI: 10.1007/s10493-014-9838-3] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/07/2013] [Accepted: 07/08/2014] [Indexed: 06/03/2023]
Abstract
Rhipicephalus (Boophilus) microplus is an obligate haematophagous arthropod and the major problem for cattle industry due to economic losses it causes. The parasite shows a remarkable adaptability to changing environmental conditions as well as an exceptional ability to survive long-term starvation. This ability has been related to a process of intracellular protein degradation called autophagy. This process in ticks is still poorly understood and only few autophagy-related (ATG) genes have been characterized. The aim of the present study was to examine the ESTs database, BmiGI, of R. microplus searching for ATG homologues. We predicted five putative ATG genes, ATG3, ATG4, ATG6 and two ATG8s. Further characterization led to the identification of RmATG8a and RmATG8b, homologues of GABARAP and MAP1LC3, respectively, and both of them belonging to the ATG8 family. PCR analyses showed that the expression level of RmATG8a and RmATG8b was higher in egg and larval stages when compared to ovary and midgut from adult ticks. This up-regulation coincides with the period in which ticks are in a starvation state, suggesting that autophagy is active in R. microplus.
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Affiliation(s)
- José Miguel Flores Fernández
- Centro de Investigación y Asistencia en Tecnología y Diseño del Estado de Jalisco, AC, Av. Normalistas 800, Col. Colinas de la Normal, 44270, Guadalajara, JAL, Mexico
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12
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Ali A, Tirloni L, Isezaki M, Seixas A, Konnai S, Ohashi K, da Silva Vaz Junior I, Termignoni C. Reprolysin metalloproteases from Ixodes persulcatus, Rhipicephalus sanguineus and Rhipicephalus microplus ticks. EXPERIMENTAL & APPLIED ACAROLOGY 2014; 63:559-578. [PMID: 24687173 DOI: 10.1007/s10493-014-9796-9] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/05/2013] [Accepted: 03/05/2014] [Indexed: 06/03/2023]
Abstract
Metalloproteases (MPs) have been considered essential for blood feeding and other physiological functions in several hematophagous animals, including ticks. We report the characterization of MP sequences of three important ticks from Asia, Africa and America: Ixodes persulcatus (Ip-MPs), Rhipicephalus sanguineus (Rs-MPs) and R. microplus (BrRm-MPs). Amino acid sequence identity between R. microplus and R. sanguineus MPs ranged from 76 to 100 %, and identities among I. persulcatus, I. ricinus and I. scapularis MP sequences ranged from 88 to 97 %. This high sequence identity and typical functional motifs show that all sequences are MPs. The presence of a zinc binding site, a Met-turn and cysteine rich domain at the C-terminal region indicates that these proteins belong to the reproplysin family of MPs. Differences in amino acid sequences of BrRm-MP1, BrRm-MP2, BrRm-MP4 and BrRm-MP5 (from Porto Alegre strain ticks) were 6, 2, 7 and 5 %, respectively, when compared with sequences deposited in GenBank for the same genes from other R. microplus isolates. Analyses of MPs predicted that they have various highly antigenic regions. Semi-quantitative RT-PCR analysis revealed the presence of transcripts in salivary glands of partially and fully fed female ticks. None of these transcripts were observed in males (except BrRm-MP4) and eggs. These enzymes may be functional components required during tick feeding to manipulate host defenses and support tick hematophagy.
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Affiliation(s)
- Abid Ali
- Centro de Biotecnologia, Universidade Federal do Rio Grande do Sul, Avenida Bento Gonçalves, 9500, Prédio 43421, C.P. 15005, Porto Alegre, RS, 91501-970, Brazil
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13
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Tirloni L, Seixas A, Mulenga A, Vaz IDS, Termignoni C. A family of serine protease inhibitors (serpins) in the cattle tick Rhipicephalus (Boophilus) microplus. Exp Parasitol 2013; 137:25-34. [PMID: 24333790 DOI: 10.1016/j.exppara.2013.12.001] [Citation(s) in RCA: 41] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2013] [Revised: 11/29/2013] [Accepted: 12/03/2013] [Indexed: 11/30/2022]
Abstract
Proteins belonging to the serine protease inhibitor (serpin) superfamily play essential roles in many organisms. In arthropods these proteins are involved in innate immune system, morphogenesis and development. In mammals serpins regulate pathways that are essential to life such as blood coagulation, fibrinolysis, inflammation and complement activation, some of which are considered the host's first line of defense to hematophagous and/or blood dueling parasites. Thus, it is hypothesized that ticks use serpins to evade host defense, facilitating parasitism. This study describes eighteen full-length cDNA sequences encoding serpins identified in Rhipicephalus (Boophilus) microplus, here named RmS 1-18 (R. microplus serpin). Spatial and temporal transcriptional profiling demonstrated that R. microplus serpins are transcribed during feeding, suggesting their participation in tick physiology regulation. We speculate that the majority of R. microplus serpins are conserved in other ticks, as indicated by phylogeny analysis. Over half of the 18 RmSs are putatively functional in the extracellular environment, as indicated by putative signal peptides on 11 of 18 serpins. Comparative modeling and structural-based alignment revealed that R. microplus serpins in this study retain the consensus secondary of typical serpins. This descriptive study enlarges the knowledge on the molecular biology of R. microplus, an important tick species.
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Affiliation(s)
- Lucas Tirloni
- Centro de Biotecnologia, Universidade Federal do Rio Grande do Sul, Avenida Bento Gonçalves 9500, Prédio 43421, Porto Alegre 91501-970, RS, Brazil
| | - Adriana Seixas
- Centro de Biotecnologia, Universidade Federal do Rio Grande do Sul, Avenida Bento Gonçalves 9500, Prédio 43421, Porto Alegre 91501-970, RS, Brazil; Departamento de Ciências Básicas da Saúde, Universidade Federal de Ciências da Saúde de Porto Alegre, Rua Sarmento Leite 245, Porto Alegre 90050-170, RS, Brazil
| | - Albert Mulenga
- Department of Entomology, Texas A&M University, Minnie Heep Center, College Station, TX, USA
| | - Itabajara da Silva Vaz
- Centro de Biotecnologia, Universidade Federal do Rio Grande do Sul, Avenida Bento Gonçalves 9500, Prédio 43421, Porto Alegre 91501-970, RS, Brazil; Faculdade de Veterinária, Universidade Federal do Rio Grande do Sul, Avenida Bento Gonçalves 9090, Porto Alegre 91540-000, RS, Brazil.
| | - Carlos Termignoni
- Centro de Biotecnologia, Universidade Federal do Rio Grande do Sul, Avenida Bento Gonçalves 9500, Prédio 43421, Porto Alegre 91501-970, RS, Brazil; Departamento de Bioquímica, Universidade Federal do Rio Grande do Sul, Rua Ramiro Barcelos 2600, Porto Alegre 90035-000, RS, Brazil
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14
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Nong X, Tan YJ, Wang JH, Xie Y, Fang CL, Chen L, Liu TF, Yang DY, Gu XB, Peng XR, Wang SX, Yang GY. Evaluation acaricidal efficacy of botanical extract from Eupatorium adenophorum against the hard tick Haemaphysalis longicornis (Acari: Ixodidae). Exp Parasitol 2013; 135:558-63. [DOI: 10.1016/j.exppara.2013.09.001] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2012] [Revised: 05/10/2013] [Accepted: 09/03/2013] [Indexed: 11/30/2022]
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15
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Zheng W, Tang Q, Zhang R, Jise Q, Ren Y, Nong X, Wu X, Gu X, Wang S, Peng X, Lai S, Yang G. Vaccination with recombinant actin from scab mites and evaluation of its protective efficacy againstPsoroptes cuniculiinfection. Parasite Immunol 2013; 35:91-8. [DOI: 10.1111/pim.12015] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2012] [Accepted: 10/08/2012] [Indexed: 11/27/2022]
Affiliation(s)
- W. Zheng
- Department of Parasitology; College of Veterinary Medicine; Sichuan Agricultural University; Ya'an; China
| | - Q. Tang
- Department of Parasitology; College of Veterinary Medicine; Sichuan Agricultural University; Ya'an; China
| | - R. Zhang
- Department of Parasitology; College of Veterinary Medicine; Sichuan Agricultural University; Ya'an; China
| | - Q. Jise
- Department of Parasitology; College of Veterinary Medicine; Sichuan Agricultural University; Ya'an; China
| | - Y. Ren
- Sichuan Academy of Animal Husbandry Sciences; Chengdu; China
| | - X. Nong
- Department of Parasitology; College of Veterinary Medicine; Sichuan Agricultural University; Ya'an; China
| | - X. Wu
- Department of Parasitology; College of Veterinary Medicine; Sichuan Agricultural University; Ya'an; China
| | - X. Gu
- Department of Parasitology; College of Veterinary Medicine; Sichuan Agricultural University; Ya'an; China
| | - S. Wang
- Department of Parasitology; College of Veterinary Medicine; Sichuan Agricultural University; Ya'an; China
| | - X. Peng
- Department of Chemistry; College of Life and Basic Science; Sichuan Agricultural University; Ya'an; China
| | - S. Lai
- College of Animal Science and Technology; Sichuan Agricultural University; Ya'an; China
| | - G. Yang
- Department of Parasitology; College of Veterinary Medicine; Sichuan Agricultural University; Ya'an; China
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16
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Imamura S, Konnai S, Yamada S, Parizi LF, Githaka N, Vaz IDS, Murata S, Ohashi K. Identification and partial characterization of a gut Rhipicephalus appendiculatus cystatin. Ticks Tick Borne Dis 2012; 4:138-44. [PMID: 23265949 DOI: 10.1016/j.ttbdis.2012.11.001] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/24/2012] [Revised: 11/08/2012] [Accepted: 11/08/2012] [Indexed: 11/29/2022]
Abstract
Vaccines are among the alternative tick control methods expected to replace at least in part the volumes of chemical acaricides currently used worldwide. However, a vaccination approach depends on a host immune response against proteins that are essential to tick physiology. The cystatin family is a protein class recently investigated to compose an effective antigen in a tick vaccine. In this study, a cDNA from Rhipicephalus appendiculatus with high sequence similarity to cystatins type 2 was identified by random sequencing analysis and called R. appendiculatus cystatin 1 (Ra-cyst-1). DNA sequence analysis showed that the cloned Ra-cyst-1 has a 423-bp open reading frame and codified to a 140-amino acid polypeptide. The putative mature protein consists of 115 amino acid residues with a deduced molecular weight of 12.8kDa. The highly conserved G (P-I), QxVxG (P-II), and PW (P-III) type 2 cystatins motifs are present in Ra-cyst-1 cDNA. RT-PCR analysis showed that the Ra-cyst-1 gene is expressed in nymph, male, and female midgut following blood feeding, but not in the salivary glands of fed females. In addition, Western blot revealed that recombinant Ra-cyst-1 was not recognized by sera derived from rabbits infested with ticks, suggesting that this cystatin is not secreted into the host during infestation. We hypothesize that Ra-cyst-1 may play a role in the tick feeding process and could be a concealed antigen candidate in further anti-tick vaccination trials.
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Affiliation(s)
- Saiki Imamura
- Department of Infectious Diseases, Graduate School of Veterinary Medicine, Hokkaido University, Sapporo, Hokkaido, Japan
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17
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Oldiges DP, Parizi LF, Zimmer KR, Lorenzini DM, Seixas A, Masuda A, da Silva Vaz I, Termignoni C. A Rhipicephalus (Boophilus) microplus cathepsin with dual peptidase and antimicrobial activity. Int J Parasitol 2012; 42:635-45. [PMID: 22584130 DOI: 10.1016/j.ijpara.2012.04.013] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2012] [Revised: 04/08/2012] [Accepted: 04/09/2012] [Indexed: 10/28/2022]
Abstract
The cattle tick, Rhipicephalus (Boophilus) microplus, is a haematophagous arthropod responsible for considerable losses in the livestock industry. Immunological control with vaccines is a promising alternative to replace chemical acaricides. Due to their importance in parasite physiology, cysteine endopeptidases are potential targets. In a previous study, native Vitellin Degrading Cysteine Endopeptidase (VTDCE) was successfully tested as a vaccine antigen for bovines against R. microplus. In this work, nucleotide and amino acid VTDCE sequences were obtained from cDNA databanks, based on data from Edman sequencing and mass spectrometry. Subsequently, cloning and expression, purification, immunological and biochemical characterisation of the recombinant protein were performed to determine the biological importance of VTDCE. By Western blot, polyclonal antibodies produced against recombinant VTDCE recognised native VTDCE. Interestingly, molecular analysis showed that the VTDCE sequence has similarity to antimicrobial peptides. Indeed, experimental results revealed that VTDCE has an antimicrobial activity which is independent of endopeptidase activity. We believe that this is the first known study to show that an arthropod enzyme has antimicrobial activity.
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Affiliation(s)
- Daiane P Oldiges
- Centro de Biotecnologia, Universidade Federal do Rio Grande do Sul, Avenida Bento Gonçalves, 9500, Prédio 43421, Porto Alegre 91501-970, RS, Brazil
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18
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Pohl PC, Klafke GM, Carvalho DD, Martins JR, Daffre S, da Silva Vaz I, Masuda A. ABC transporter efflux pumps: a defense mechanism against ivermectin in Rhipicephalus (Boophilus) microplus. Int J Parasitol 2011; 41:1323-33. [PMID: 22036897 DOI: 10.1016/j.ijpara.2011.08.004] [Citation(s) in RCA: 70] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2011] [Revised: 08/09/2011] [Accepted: 08/24/2011] [Indexed: 10/16/2022]
Abstract
ATP-binding cassette (ABC) transporters are efflux transporters found in all organisms. These proteins are responsible for pumping xenobiotic and endogenous metabolites through extra- and intracellular membranes, thereby reducing cellular concentrations of toxic compounds. ABC transporters have been associated with drug resistance in several nematodes and parasitic arthropods. Here, the ability of ABC transporter inhibitors to enhance ivermectin (IVM) sensitivity was tested in larvae and adult females of Rhipicephalus (Boophilus) microplus. Larvae of susceptible and IVM-resistant tick populations were pre-exposed to sub-lethal doses of the ABC transporter inhibitors Cyclosporin A (CsA) and MK571, and subsequently treated with IVM in a Larval Packet Test (LPT). ABC transporter inhibition by both drugs significantly reduced the concentration for 50% lethality (LC(50)) values of four IVM-resistant populations but IVM sensitivity of a susceptible population remained unchanged. IVM sensitivity in adults was assessed through an artificial feeding assay. The addition of CsA to a blood meal substantially affected IVM toxicity in adult female ticks from a resistant population by reducing oviposition and egg viability, although it did not alter IVM toxicity in susceptible females. Three partial nucleotide sequences with similarity to ABC transporters were retrieved from the DFCI Boophilus microplus Gene Index (http://compbio.dfci.harvard.edu/index.html). Their transcriptional levels in the midgut of resistant and susceptible females were determined by quantitative PCR, showing that one of these sequences was significantly up-regulated in IVM-resistant females and suggesting its participation in IVM detoxification. We believe this work reports the first known evidence for the participation of ABC transporters in IVM resistance in R. microplus.
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Affiliation(s)
- Paula C Pohl
- Centro de Biotecnologia, Universidade Federal do Rio Grande do Sul, Avenida Bento Gonçalves, 9500, Prédio 43421, Porto Alegre 91501-970, RS, Brazil
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19
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JIANG HB, SHEN GM, DOU W, TANG PA, LIU YH, ZHOU AW, WANG JJ. Identification and Expression of a β-actin Gene from Liposcelis bostrychophila Badonnel (Psocoptera: Liposcelididae). ACTA ACUST UNITED AC 2011. [DOI: 10.1016/s1671-2927(11)60132-6] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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20
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Jiang HB, Liu YH, Tang PA, Zhou AW, Wang JJ. Validation of endogenous reference genes for insecticide-induced and developmental expression profiling of Liposcelis bostsrychophila (Psocoptera: Liposcelididae). Mol Biol Rep 2009; 37:1019-29. [DOI: 10.1007/s11033-009-9803-0] [Citation(s) in RCA: 52] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2009] [Accepted: 09/02/2009] [Indexed: 11/28/2022]
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21
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Imamura S, da Silva Vaz I, Konnai S, Yamada S, Nakajima C, Onuma M, Ohashi K. Effect of vaccination with a recombinant metalloprotease from Haemaphysalis longicornis. EXPERIMENTAL & APPLIED ACAROLOGY 2009; 48:345-358. [PMID: 19184465 DOI: 10.1007/s10493-009-9245-3] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/29/2008] [Accepted: 01/14/2009] [Indexed: 05/27/2023]
Abstract
We report the cloning, expression and characterization of an Haemaphysalis longicornis metalloprotease (named HLMP1). The gene encodes a predicted 550 aminoacid protein with similarity to metalloproteases of the reprolysin family. The protein sequence contains a signal sequence, the zinc-binding motif (HEXXHXXGXXH) common to metalloproteases and a cysteine-rich region. Reverse transcription-PCR expression analysis indicates the presence of mRNA in the salivary gland of larva, nymph and adult ticks. Rabbit repeatedly infested with H. longicornis recognized rHLMP1, suggesting that the immune-response against HLMP1 is naturally induced through the feeding of ticks. Vaccination of rabbit with rHLMP1 produced protective immunity against ticks, resulting in 15.6 and 14.6% mortality in nymph and adult ticks, respectively. This work provides information to understand the tick's defense system, and offers new insights to develop strategies to block this defense system with an anti-tick vaccine based on a metalloprotease.
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Affiliation(s)
- Saiki Imamura
- Department of Disease Control, Graduate School of Veterinary Medicine, Hokkaido University, Kita 18, Nishi 9, Sapporo 060-0818, Hokkaido, Japan
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22
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de Freitas DRJ, Vaz IDS, Masuda A. [Expression and enzymatic activity of glutathione s-transferase in tissues of Boophilus microplus females]. ACTA ACUST UNITED AC 2009; 17:99-104. [PMID: 18823578 DOI: 10.1590/s1984-29612008000200007] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2007] [Accepted: 06/30/2008] [Indexed: 11/21/2022]
Abstract
Cellular detoxification and excretion enzymes are important to the maintenance of cellular homeostasis. In this work mRNA transcription, protein expression and enzymatic activity of Glutathione S-transferases (GSTs), enzymes involved in the excretion of endo and xenobiotic compounds were analyzed. These parameters are elements believed to protect cells against chemical toxicity and oxidative stress in different tissues (salivary gland, ovary and synganglion) from partially engorged females and engorged females of Boophilus microplus. The results presented showed elevated GST activity in partially engorged females. The enzymatic activity decreased during the preoviposition period in engorged females. GST mRNA transcription was detected in salivary glands and synganglion from partially engorged and engorged females, but not in ovary. The results of this work help to elucidate the role of GST in tick development and assist in the understanding of the importance of GST in tick females during the preparation for oviposition.
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Affiliation(s)
- Daniela R J de Freitas
- Centro de Biotecnologia do Estado do Rio Grande do Sul, Universidade Federal do Rio Grande do Sul, Campus do Vale, Porto Alegre, RS, Brazil
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23
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Cloning and characterization of a cDNA clone encoding troponin T from tick Haemaphysalis qinghaiensis (Acari: Ixodidae). Comp Biochem Physiol B Biochem Mol Biol 2008; 151:323-9. [DOI: 10.1016/j.cbpb.2008.07.016] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2008] [Revised: 07/27/2008] [Accepted: 07/28/2008] [Indexed: 11/16/2022]
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24
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Boldbaatar D, Kilonzo RM, Battur B, Umemiya R, Liao M, Tanaka T, Xuan X, Fujisaki K. Identification of two forms of cyclophilin from the hard tick Haemaphysalis longicornis. Process Biochem 2008. [DOI: 10.1016/j.procbio.2008.01.026] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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25
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Actin 5C, a promising nuclear gene for spider phylogenetics. Mol Phylogenet Evol 2008; 48:377-82. [PMID: 18411063 DOI: 10.1016/j.ympev.2008.03.003] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2007] [Revised: 02/27/2008] [Accepted: 03/02/2008] [Indexed: 11/21/2022]
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26
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Boldbaatar D, Battsetseg B, Hatta T, Miyoshi T, Tsuji N, Xuan X, Fujisaki K. Valosin-containing protein from the hard tick Haemaphysalis longicornis: effects of dsRNA-mediated HlVCP gene silencing. Biochem Cell Biol 2007; 85:384-94. [PMID: 17612633 DOI: 10.1139/o07-051] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
We report the cloning and characterization of a cDNA encoding the valosin-containing protein (VCP) from the Haemaphysalis longicornis tick (HlVCP). The full-length HlVCP is 2782 bp and codes for 808 amino acids of a deduced protein with a predicted molecular mass of 89.9 kDa. The domain structure analysis revealed that the deduced protein has 2 Walker A domains, 2 Walker B domains, a Cdc48 domain, and a polyQ-binding domain. The mouse anti-HlVCP serum recognized a 97 kDa native protein in the salivary glands, midgut, and synganglion. RT-PCR analysis revealed that the native VCP was expressed throughout the developing stages and in tick organs. HlVCP silencing resulted in a decrease in tick body mass after blood feeding. This study not only contributes to a growing understanding of the ATPase gene family but also lays the groundwork for future studies on protein secretion and host-tick interaction. This study is the first report of the VCP gene from Chelicerata, which include spiders, scorpions, and ticks.
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Affiliation(s)
- Damdinsuren Boldbaatar
- Laboratory of Emerging Infectious Diseases, Department of Frontier Veterinary Medicine, Kagoshima University, Korimoto, Kagoshima 890-0065, Japan
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Horigane M, Ogihara K, Nakajima Y, Honda H, Taylor D. Identification and expression analysis of an actin gene from the soft tick, Ornithodoros moubata (Acari: Argasidae). ARCHIVES OF INSECT BIOCHEMISTRY AND PHYSIOLOGY 2007; 64:186-99. [PMID: 17366597 DOI: 10.1002/arch.20170] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/14/2023]
Abstract
Actin genes are found in all living organisms and highly conserved in various animals as shown by numerous studies on actin gene expression and function. Because of this ubiquitous nature of actin, it is often used as an internal control in gene expression studies. To clarify the suitability of actin gene as an internal control in soft ticks, isolation and expression analyses of an actin gene from Ornithodoros moubata was performed. An actin gene of Ornithodoros moubata (OmAct2, GenBank accession no. AB208021) with 1,131 bp and 376 amino acid residues was identified. The homology of OmAct2 with other arthropod actin genes was greater than 80% in nucleotides and 99% in amino acids. OmAct2 gene was classified as a cytoskeletal actin type by absence of muscle-specific amino acids commonly found in insects and ubiquitous expression in all stages and both sexes. Southern blot revealed that O. moubata has four to seven actin genes. In addition, actin expression analyzed by real-time PCR before and after blood feeding was not significantly different indicating OmAct2 is an appropriate internal control for the analysis of gene expression in these ticks.
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Affiliation(s)
- Mari Horigane
- Graduate School of Life and Environmental Sciences, University of Tsukuba, Tsukuba Ibaraki, Japan
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Umemiya R, Hatta T, Liao M, Tanaka M, Zhou J, Inoue N, Fujisaki K. Haemaphysalis longicornis: Molecular characterization of a homologue of the macrophage migration inhibitory factor from the partially fed ticks. Exp Parasitol 2007; 115:135-42. [PMID: 16987517 DOI: 10.1016/j.exppara.2006.07.006] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2006] [Revised: 07/10/2006] [Accepted: 07/17/2006] [Indexed: 11/16/2022]
Abstract
The macrophage migration inhibitory factor (MIF) has been identified from some vertebrates and invertebrates. MIF is related to inflammation, tumor growth, and angiogenesis in vertebrates. Here, we report the molecular characterization of a homologue of MIF from partially fed Haemaphysalis longicornis. The sequence analysis of the H. longicornis MIF (HlMIF) indicated that its deduced amino acid sequence has an identity of 77% with the MIF of the tick Amblyomma americanum. Western blot analysis using the anti-His-HlMIF antibody showed that HlMIF was up-regulated during blood feeding. Immunohistochemistry showed that the endogenous HlMIF in partially fed ticks was localized to the midgut and epidermal cells. Moreover, the functional assay revealed that the GST-HlMIF inhibited the migration of human monocytes. In conclusion, we consider that HlMIF may facilitate blood feeding by inhibiting host macrophage migration to the feeding lesion or may participate in the proliferation and differentiation of cells in the tick body.
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Affiliation(s)
- Rika Umemiya
- Department of Basic Veterinary Science, The United Graduate School of Veterinary Sciences, Gifu University, Yanagito, Gifu 501-1193, Japan
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Konnai S, Imamura S, Nakajima C, Witola WH, Yamada S, Simuunza M, Nambota A, Yasuda J, Ohashi K, Onuma M. Acquisition and transmission of Theileria parva by vector tick, Rhipicephalus appendiculatus. Acta Trop 2006; 99:34-41. [PMID: 16899209 DOI: 10.1016/j.actatropica.2006.06.008] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2005] [Revised: 06/19/2006] [Accepted: 06/22/2006] [Indexed: 11/19/2022]
Abstract
In order to investigate the transmission dynamics of Theileria parva (T. parva) by the brown ear tick, Rhipicephalus appendiculatus (R. appendiculatus), under experimental conditions, detection of T. parva in ticks and cattle was performed by a quantitative real-time PCR assay. A calf inoculated with a T. parva mixture became PCR-positive for T. parva infection on day 8 post-inoculation, and subsequently, nymphal ticks were introduced and maintained to feed on the infected calf for 6 days. Engorged nymphs were collected daily and allowed to molt into adults, and overall, 70.8% (121/171) of the adult ticks acquired the T. parva infection. Furthermore, the T. parva infection rate in ticks under field conditions was monitored by real-time PCR in R. appendiculatus ticks collected from a traditionally managed pastoral land of Zambia, on which Sanga breed cattle are traditionally reared and the area has endemic East Coast fever (ECF). A total of 70 cattle were randomly selected in the same area and 67 (95.7%) were found to be serologically positive for R. appendiculatus tick antigen (RIM36). Twenty-nine (43.3%) of the 67 serologically positive cattle were real-time PCR-positive for T. parva, although no piroplasms could be detected in the blood smears. Unexpectedly, out of 614 R. appendiculatus nymphal and adult ticks collected by flagging vegetation, 4.1% were positive for T. parva DNA. However, since the rate of transmission of T. parva from infected cattle to ticks and vice versa and the serological evidence of exposure to R. appendiculatus ticks in naturally exposed cattle were relatively high, it would be wise in such a case to consider vector control as well as vaccination against ECF as control measures.
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Affiliation(s)
- Satoru Konnai
- Department of Disease Control, Graduate School of Veterinary Medicine, Hokkaido University, Sapporo, Hokkaido 060-0818, Japan.
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Imamura S, Namangala B, Tajima T, Tembo ME, Yasuda J, Ohashi K, Onuma M. Two serine protease inhibitors (serpins) that induce a bovine protective immune response against Rhipicephalus appendiculatus ticks. Vaccine 2006; 24:2230-7. [PMID: 16314008 DOI: 10.1016/j.vaccine.2005.10.055] [Citation(s) in RCA: 55] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2005] [Revised: 10/17/2005] [Accepted: 10/20/2005] [Indexed: 10/25/2022]
Abstract
We have previously undertaken preliminary characterization of two Rhipicephalus appendiculutus serine protease inhibitors (RAS-1 and -2) as anti-tick vaccine candidates. In this study, to clarify this hypothesis, we generated and further characterized recombinant RAS-1 and -2 (rRAS-1 and -2) and tested their potency as a cocktail anti-tick vaccine in cattle. RT-PCR analysis showed that RAS-1 and -2 mRNA transcripts are expressed during all life cycle stages of ticks, independent of sex. As judged by SDS-PAGE rRAS-1 and -2 migrated as a molecular weight of around 64 and 60 kDa protein, respectively, considering that the expression vector produced a recombinant protein fused with 18-22 kDa TRX protein. RAS-1 and -2 were found not to be secreted into the bite site as determined by the reactivity of anti-tick saliva sera to rRAS-1 and -2, suggesting that both proteins are concealed antigens. Vaccination of cattle with a combination of rRAS-1 and -2 conferred significant protective immunity against ticks, resulting in 61.4% reduction in nymph engorgement rate, and in 28 and 43% increased mortality rate in adult female and male ticks, respectively. This is the first report on an anti-tick vaccine trial using a combination of two different serpins derived from R. appendiculatus, and using cattle as a natural host.
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Affiliation(s)
- Saiki Imamura
- Department of Infectious Diseases, Graduate School of Veterinary Medicine, Hokkaido University, Kita 18, Nishi 9, Sapporo 060-0818, Hokkaido, Japan
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Nakajima C, Imamura S, Konnai S, Yamada S, Nishikado H, Ohashi K, Onuma M. A Novel Gene Encoding a Thrombin Inhibitory Protein in a cDNA Library from Haemaphysalis longicornis Salivary Gland. J Vet Med Sci 2006; 68:447-52. [PMID: 16757887 DOI: 10.1292/jvms.68.447] [Citation(s) in RCA: 40] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
A novel thrombin inhibitory protein coding gene was identified from a cDNA library derived from salivary gland of partially-fed Haemaphysalis longicornis (hard tick). The gene encoded a 93-amino acid protein, designated chimadanin, which had a signal peptide sequence and was predicted to be a secretory protein. It showed no similarity to any other previously identified proteins or conserved domain sequences. The gene was expressed during blood feeding and suggested to be expressed mainly in the salivary gland. The predicted mature region of chimadanin was expressed in Escherichia coli and characteristics of the recombinant chimadanin were determined. The activated partial thromboplastin time and the prothrombin time in sheep plasma were significantly prolonged by chimadanin in a dose dependent manner. Amidolytic activity of thrombin was also inhibited by chimadanin in a dose dependent manner and it suggested that chimadanin was an anticoagulant with thrombin inhibitory activity. This newly identified thrombin inhibitor may play an important role in tick blood feeding.
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Affiliation(s)
- Chie Nakajima
- Laboratory of Infectious Diseases, Department of Disease Control, Graduate School of Veterinary Medicine, Hokkaido University, Japan
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