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Perumalsamy N, Sharma R, Subramanian M, Nagarajan SA. Hard Ticks as Vectors: The Emerging Threat of Tick-Borne Diseases in India. Pathogens 2024; 13:556. [PMID: 39057783 PMCID: PMC11279560 DOI: 10.3390/pathogens13070556] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2024] [Revised: 05/06/2024] [Accepted: 05/07/2024] [Indexed: 07/28/2024] Open
Abstract
Hard ticks (Ixodidae) play a critical role in transmitting various tick-borne diseases (TBDs), posing significant global threats to human and animal health. Climatic factors influence the abundance, diversity, and vectorial capacity of tick vectors. It is imperative to have a comprehensive understanding of hard ticks, pathogens, eco-epidemiology, and the impact of climatic changes on the transmission dynamics of TBDs. The distribution and life cycle patterns of hard ticks are influenced by diverse ecological factors that, in turn, can be impacted by changes in climate, leading to the expansion of the tick vector's range and geographical distribution. Vector competence, a pivotal aspect of vectorial capacity, involves the tick's ability to acquire, maintain, and transmit pathogens. Hard ticks, by efficiently feeding on diverse hosts and manipulating their immunity through their saliva, emerge as competent vectors for various pathogens, such as viruses, parasites and bacteria. This ability significantly influences the success of pathogen transmission. Further exploration of genetic diversity, population structure, and hybrid tick vectors is crucial, as they play a substantial role in influencing vector competence and complicating the dynamics of TBDs. This comprehensive review deals with important TBDs in India and delves into a profound understanding of hard ticks as vectors, their biology, and the factors influencing their vector competence. Given that TBDs continue to pose a substantial threat to global health, the review emphasizes the urgency of investigating tick control strategies and advancing vaccine development. Special attention is given to the pivotal role of population genetics in comprehending the genetic diversity of tick populations and providing essential insights into their adaptability to environmental changes.
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Affiliation(s)
| | | | | | - Shriram Ananganallur Nagarajan
- Division of Vector Biology and Control, Indian Council of Medical Research—Vector Control Research Centre (ICMR-VCRC), Puducherry 605006, India; (N.P.); (R.S.); (M.S.)
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2
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Berger M, Rosa da Mata S, Pizzolatti NM, Parizi LF, Konnai S, da Silva Vaz I, Seixas A, Tirloni L. An Ixodes persulcatus Inhibitor of Plasmin and Thrombin Hinders Keratinocyte Migration, Blood Coagulation, and Endothelial Permeability. J Invest Dermatol 2024; 144:1112-1123.e7. [PMID: 37996063 PMCID: PMC11034719 DOI: 10.1016/j.jid.2023.10.026] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2023] [Revised: 09/28/2023] [Accepted: 10/10/2023] [Indexed: 11/25/2023]
Abstract
The skin is the first host tissue that the tick mouthparts, tick saliva, and a tick-borne pathogen contact during feeding. Tick salivary glands have evolved a complex and sophisticated pharmacological arsenal, consisting of bioactive molecules, to assist blood feeding and pathogen transmission. In this work, persulcatin, a multifunctional molecule that targets keratinocyte function and hemostasis, was identified from Ixodes persulcatus female ticks. The recombinant persulcatin was expressed and purified and is a 25-kDa acidic protein with 2 Kunitz-type domains. Persulcatin is a classical tight-binding competitive inhibitor of proteases, targeting plasmin (Ki: 28 nM) and thrombin (Ki: 115 nM). It blocks plasmin generation on keratinocytes and inhibits their migration and matrix protein degradation; downregulates matrix metalloproteinase 2 and matrix metalloproteinase 9; and causes a delay in blood coagulation, endothelial cell activation, and thrombin-induced fibrinocoagulation. It interacts with exosite I of thrombin and reduces thrombin-induced endothelial cell permeability by inhibiting vascular endothelial-cadherin disruption. The multifaceted roles of persulcatin as an inhibitor and modulator within the plasminogen-plasmin system and thrombin not only unveil further insights into the intricate mechanisms governing wound healing but also provide a fresh perspective on the intricate interactions between ticks and their host organisms.
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Affiliation(s)
- Markus Berger
- Tick-Pathogen Transmission Unit, Laboratory of Bacteriology, National Institute of Allergy and Infectious Diseases, Hamilton, Montana, USA; Centro de Pesquisa Experimental, Hospital de Clínicas de Porto Alegre, Porto Alegre, Brazil
| | - Sheila Rosa da Mata
- Universidade Federal de Ciências da Saúde de Porto Alegre, Porto Alegre, Brazil
| | | | - Luís Fernando Parizi
- Centro de Biotecnologia, Universidade Federal do Rio Grande do Sul, Porto Alegre, Brazil
| | - Satoru Konnai
- Laboratory of Infectious Diseases, Department of Disease Control, Graduate School of Veterinary Medicine, Hokkaido University, Sapporo, Japan
| | - Itabajara da Silva Vaz
- Centro de Biotecnologia, Universidade Federal do Rio Grande do Sul, Porto Alegre, Brazil; Faculdade de Veterinária, Universidade Federal do Rio Grande do Sul, Porto Alegre, Brazil; Instituto Nacional de Ciência e Tecnologia-Entomologia Molecular, Rio de Janeiro, Brazil
| | - Adriana Seixas
- Universidade Federal de Ciências da Saúde de Porto Alegre, Porto Alegre, Brazil; Instituto Nacional de Ciência e Tecnologia-Entomologia Molecular, Rio de Janeiro, Brazil.
| | - Lucas Tirloni
- Tick-Pathogen Transmission Unit, Laboratory of Bacteriology, National Institute of Allergy and Infectious Diseases, Hamilton, Montana, USA.
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Dedavid E Silva LA, Parizi LF, Molossi FA, Driemeier D, da Silva Vaz Junior I. Rhipicephalus microplus thyropin-like protein: Structural and immunologic analyzes. Vet Parasitol 2024; 327:110136. [PMID: 38290194 DOI: 10.1016/j.vetpar.2024.110136] [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: 10/11/2023] [Revised: 01/16/2024] [Accepted: 01/18/2024] [Indexed: 02/01/2024]
Abstract
Tick saliva has a pivotal function in parasitism. It has pharmacological and immunomodulatory properties, with several proteins reported in its composition. Thyroglobulin type-1 domain protease inhibitor (thyropin)-like proteins are found in tick saliva, but their function, properties and structures are poorly characterized. It has been reported that thyropins are capable of inhibiting cysteine peptidases present in antigen-presenting cells. To elucidate the role of thyropin-like proteins in ticks, we conducted in silico analysis and cloned an open reading frame from a thyropin-like protein found in Rhipicephalus microplus. The recombinant protein was successfully expressed, followed by immunological characterization and a vaccine trial against Rhipicephalus sanguineus in rabbits. Several differences are observed between thyropin-like proteins from hard and soft ticks, especially the number of thyroglobulin domains and predicted glycosylation pattern. Thyropin-like proteins also differ between postriata and metastriata ticks, the latter having a coil-domain at the C-terminal region and high number of predicted glycosylation sites. Overall, the data suggested divergence in thyropin-like proteins functions among ticks. The recombinant thyropin-like protein is immunogenic and the antibodies against it are able to recognize the native protein in tick saliva and tissues. While the recombinant protein does not elicit a protective response against R. sanguineus infestation, its characterization paves the way for further investigations aimed at determining the precise function of this protein in tick physiology.
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Affiliation(s)
- Lucas Andre Dedavid E Silva
- Centro de Biotecnologia, Universidade Federal do Rio Grande do Sul, Avenida Bento Gonçalves, 9500, Prédio 43421, Porto Alegre 91501-970, RS, Brazil
| | - Luís Fernando Parizi
- Centro de Biotecnologia, Universidade Federal do Rio Grande do Sul, Avenida Bento Gonçalves, 9500, Prédio 43421, Porto Alegre 91501-970, RS, Brazil
| | - Franciéli Adriane Molossi
- Faculdade de Veterinária, Universidade Federal do Rio Grande do Sul, Avenida Bento Gonçalves, 9090, Porto Alegre 91540-000, RS, Brazil
| | - David Driemeier
- Faculdade de Veterinária, Universidade Federal do Rio Grande do Sul, Avenida Bento Gonçalves, 9090, Porto Alegre 91540-000, RS, Brazil
| | - Itabajara da Silva Vaz Junior
- Centro de Biotecnologia, Universidade Federal do Rio Grande do Sul, Avenida Bento Gonçalves, 9500, Prédio 43421, Porto Alegre 91501-970, RS, Brazil; Instituto Nacional de Ciência e Tecnologia - Entomologia Molecular, Rio de Janeiro, RJ, Brazil; Faculdade de Veterinária, Universidade Federal do Rio Grande do Sul, Avenida Bento Gonçalves, 9090, Porto Alegre 91540-000, RS, Brazil.
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Karim S, Leyva-Castillo JM, Narasimhan S. Tick salivary glycans - a sugar-coated tick bite. Trends Parasitol 2023; 39:1100-1113. [PMID: 37838514 DOI: 10.1016/j.pt.2023.09.012] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2023] [Revised: 09/22/2023] [Accepted: 09/22/2023] [Indexed: 10/16/2023]
Abstract
Ticks are hematophagous arthropods that transmit disease-causing pathogens worldwide. Tick saliva deposited into the tick-bite site is composed of an array of immunomodulatory proteins that ensure successful feeding and pathogen transmission. These salivary proteins are often glycosylated, and glycosylation is potentially critical for the function of these proteins. Some salivary glycans are linked to the phenomenon of red meat allergy - an allergic response to red meat consumption in humans exposed to certain tick species. Tick salivary glycans are also invoked in the phenomenon of acquired tick resistance wherein non-natural host species exposed to tick bites develop an immune response that thwarts subsequent tick feeding. This review dwells on our current knowledge of these two phenomena, thematically linked by salivary glycans.
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Affiliation(s)
- Shahid Karim
- University of Southern Mississippi, Hattiesburg, MS, USA
| | - Juan Manuel Leyva-Castillo
- Division of Immunology, Boston Children's Hospital, Department of Pediatrics, Harvard Medical School, Boston, MA, USA
| | - Sukanya Narasimhan
- Section of Infectious Diseases, Department of Internal Medicine, Yale School of Medicine, New Haven-06520, CT, USA.
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5
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Kozelková T, Dyčka F, Lu S, Urbanová V, Frantová H, Sojka D, Šíma R, Horn M, Perner J, Kopáček P. Insight Into the Dynamics of the Ixodes ricinus Nymphal Midgut Proteome. Mol Cell Proteomics 2023; 22:100663. [PMID: 37832788 PMCID: PMC10665701 DOI: 10.1016/j.mcpro.2023.100663] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2023] [Revised: 09/06/2023] [Accepted: 10/03/2023] [Indexed: 10/15/2023] Open
Abstract
Ticks are ectoparasites that feed on blood and have an impressive ability to consume and process enormous amounts of host blood, allowing extremely long periods of starvation between blood meals. The central role in the parasitic lifestyle of ticks is played by the midgut. This organ efficiently stores and digests ingested blood and serves as the primary interface for the transmission of tick-borne pathogens. In this study, we used a label-free quantitative approach to perform a novel dynamic proteomic analysis of the midgut of Ixodesricinus nymphs, covering their development from unfed to pre-molt stages. We identified 1534 I. ricinus-specific proteins with a relatively low proportion of host proteins. This proteome dataset, which was carefully examined by manual scrutiny, allowed precise annotation of proteins important for blood meal processing and their dynamic changes during nymphal ontogeny. We focused on midgut molecules related to lipid hydrolysis, storage, and transport, opening a yet unexplored avenue for studying lipid metabolism in ticks. Further dynamic profiling of the tick's multi-enzyme digestive network, protease inhibitors, enzymes involved in redox homeostasis and detoxification, antimicrobial peptides, and proteins responsible for midgut colonization by Borrelia spirochetes promises to uncover new targets for targeting tick nymphs, the most critical life stage for transmission the pathogens that cause tick-borne diseases.
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Affiliation(s)
- Tereza Kozelková
- Institute of Parasitology, Biology Centre of the Czech Academy of Sciences, Ceske Budejovice, Czech Republic; Faculty of Sciences, University of South Bohemia, Ceske Budejovice, Czech Republic
| | - Filip Dyčka
- Institute of Parasitology, Biology Centre of the Czech Academy of Sciences, Ceske Budejovice, Czech Republic; Faculty of Sciences, University of South Bohemia, Ceske Budejovice, Czech Republic
| | - Stephen Lu
- Vector Biology Section, Laboratory of Malaria and Vector Research, National Institute of Allergy and Infectious Diseases, Bethesda, Maryland, USA
| | - Veronika Urbanová
- Institute of Parasitology, Biology Centre of the Czech Academy of Sciences, Ceske Budejovice, Czech Republic
| | - Helena Frantová
- Institute of Parasitology, Biology Centre of the Czech Academy of Sciences, Ceske Budejovice, Czech Republic
| | - Daniel Sojka
- Institute of Parasitology, Biology Centre of the Czech Academy of Sciences, Ceske Budejovice, Czech Republic
| | - Radek Šíma
- Institute of Parasitology, Biology Centre of the Czech Academy of Sciences, Ceske Budejovice, Czech Republic; Bioptic Laboratory, Ltd, Plzen, Czech Republic
| | - Martin Horn
- Institute of Organic Chemistry and Biochemistry, Czech Academy of Sciences, Prague, Czech Republic
| | - Jan Perner
- Institute of Parasitology, Biology Centre of the Czech Academy of Sciences, Ceske Budejovice, Czech Republic
| | - Petr Kopáček
- Institute of Parasitology, Biology Centre of the Czech Academy of Sciences, Ceske Budejovice, Czech Republic.
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6
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Nogueira BCF, Orozco AMO, Argumedo AK, de Oliveira Faustino A, de Oliveira LL, da Fonseca LA, Campos AK. Circulating oxidative stress and acute phase protein levels in horses infested with ticks. EXPERIMENTAL & APPLIED ACAROLOGY 2023:10.1007/s10493-023-00798-z. [PMID: 37285109 DOI: 10.1007/s10493-023-00798-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Received: 06/30/2022] [Accepted: 05/05/2023] [Indexed: 06/08/2023]
Abstract
Ticks have saliva rich in immunoregulatory molecules that interfere with the host's physiology in order to feed. This study aimed to evaluate the concentration of acute phase proteins and circulating oxidative stress in response to infestation by Amblyomma sculptum and Dermacentor nitens in two breed horses, Mangalarga Marchador and Breton Postier, to define resistance or susceptibility to ticks. Among the oxidative stress markers, we observed lower malondialdehyde and nitric oxide in horses with tick infestation, consequently not altering the antioxidant enzymes. Breton Postier with tick infestation showed a reduction in the ferric reducing ability of plasma (FRAP), which may be due to lower feeding of the host due to the stress caused by the infestation or even to sequestration of components induced by the tick during blood feeding. The alpha-1-antitrypsin, an acute phase protein, showed an increase in Mangalarga Marchador with tick infestation; curiously it is related to a protective action against tissue damage, pathogens and parasites. We could assume that Mangalarga Marchador showed a better response to ticks when compared to Breton Postier. However, it is still early to define the resistance or susceptibility to ticks, as we did not observe significant changes in most of the analyzed variables. Further studies are needed to understand the compounds and mechanisms of action of the tick saliva in the acute phase proteins and the possible relationships of oxidative stress in the host and the tick during blood feeding.
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Affiliation(s)
| | | | - Ana Karina Argumedo
- Department of General Biology, Federal University of Viçosa, Viçosa, Minas Gerais, Brazil
| | | | | | | | - Artur Kanadani Campos
- Department of Veterinary Medicine, Federal University of Viçosa, Viçosa, Minas Gerais, Brazil.
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7
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Kahl O, Gray JS. The biology of Ixodes ricinus with emphasis on its ecology. Ticks Tick Borne Dis 2023; 14:102114. [PMID: 36603231 DOI: 10.1016/j.ttbdis.2022.102114] [Citation(s) in RCA: 15] [Impact Index Per Article: 15.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2022] [Revised: 12/20/2022] [Accepted: 12/20/2022] [Indexed: 12/27/2022]
Abstract
Prior to its identification as the vector of Lyme borreliosis spirochaetes in Europe in 1983, interest in Ixodes ricinus (L.) was moderate and mainly concerned the transmission of pathogens to farm animals and of tick-borne encephalitis virus to humans. The situation now is very different, and more papers have been published on I. ricinus than on any other ixodid tick species. However, this large literature is scattered and in recent years has become dominated by the molecular detection and characterization of the many pathogens that I. ricinus transmits. Several decades have now elapsed since a review addressing its basic biology and ecology appeared, and the present publication seeks to present basic aspects of its biology and ecology that are related to its role as a vector of disease agents, including its life cycle, feeding behaviour, host relations, survival off the host, and the impact of weather and climate.
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Affiliation(s)
- Olaf Kahl
- tick-radar GmbH, 10555 Berlin, Germany.
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8
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Tick Salivary Kunitz-Type Inhibitors: Targeting Host Hemostasis and Immunity to Mediate Successful Blood Feeding. Int J Mol Sci 2023; 24:ijms24021556. [PMID: 36675071 PMCID: PMC9865953 DOI: 10.3390/ijms24021556] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2022] [Revised: 12/07/2022] [Accepted: 12/08/2022] [Indexed: 01/15/2023] Open
Abstract
Kunitz domain-containing proteins are ubiquitous serine protease inhibitors with promising therapeutic potential. They target key proteases involved in major cellular processes such as inflammation or hemostasis through competitive inhibition in a substrate-like manner. Protease inhibitors from the Kunitz superfamily have a low molecular weight (18-24 kDa) and are characterized by the presence of one or more Kunitz motifs consisting of α-helices and antiparallel β-sheets stabilized by three disulfide bonds. Kunitz-type inhibitors are an important fraction of the protease inhibitors found in tick saliva. Their roles in inhibiting and/or suppressing host homeostatic responses continue to be shown to be additive or synergistic with other protease inhibitors such as cystatins or serpins, ultimately mediating successful blood feeding for the tick. In this review, we discuss the biochemical features of tick salivary Kunitz-type protease inhibitors. We focus on their various effects on host hemostasis and immunity at the molecular and cellular level and their potential therapeutic applications. In doing so, we highlight that their pharmacological properties can be exploited for the development of novel therapies and vaccines.
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Medina JM, Abbas MN, Bensaoud C, Hackenberg M, Kotsyfakis M. Bioinformatic Analysis of Ixodes ricinus Long Non-Coding RNAs Predicts Their Binding Ability of Host miRNAs. Int J Mol Sci 2022; 23:ijms23179761. [PMID: 36077158 PMCID: PMC9456184 DOI: 10.3390/ijms23179761] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2022] [Revised: 08/22/2022] [Accepted: 08/24/2022] [Indexed: 11/16/2022] Open
Abstract
Ixodes ricinus ticks are distributed across Europe and are a vector of tick-borne diseases. Although I. ricinus transcriptome studies have focused exclusively on protein coding genes, the last decade witnessed a strong increase in long non-coding RNA (lncRNA) research and characterization. Here, we report for the first time an exhaustive analysis of these non-coding molecules in I. ricinus based on 131 RNA-seq datasets from three different BioProjects. Using this data, we obtained a consensus set of lncRNAs and showed that lncRNA expression is stable among different studies. While the length distribution of lncRNAs from the individual data sets is biased toward short length values, implying the existence of technical artefacts, the consensus lncRNAs show a more homogeneous distribution emphasizing the importance to incorporate data from different sources to generate a solid reference set of lncRNAs. KEGG enrichment analysis of host miRNAs putatively targeting lncRNAs upregulated upon feeding showed that these miRNAs are involved in several relevant functions for the tick-host interaction. The possibility that at least some tick lncRNAs act as host miRNA sponges was further explored by identifying lncRNAs with many target regions for a given host miRNA or sets of host miRNAs that consistently target lncRNAs together. Overall, our findings suggest that lncRNAs that may act as sponges have diverse biological roles related to the tick–host interaction in different tissues.
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Affiliation(s)
- José María Medina
- Departamentode Genética, Facultad de Ciencias, Universidad de Granada, Campus de Fuentenueva s/n, 18071 Granada, Spain
- Laboratorio de Bioinformática, Centro de Investigación Biomédica, PTS, Instituto de Biotecnología, Avda. del Conocimiento s/n, 18016 Granada, Spain
| | - Muhammad Nadeem Abbas
- State Key Laboratory of Silkworm Genome Biology, Key Laboratory of Sericultural Biology and Genetic Breeding, Ministry of Agriculture, Southwest University, Chongqing 400715, China
| | - Chaima Bensaoud
- Institute of Parasitology, Biology Centre, Czech Academy of Sciences, 37005 Ceske Budejovice, Czech Republic
| | - Michael Hackenberg
- Departamentode Genética, Facultad de Ciencias, Universidad de Granada, Campus de Fuentenueva s/n, 18071 Granada, Spain
- Laboratorio de Bioinformática, Centro de Investigación Biomédica, PTS, Instituto de Biotecnología, Avda. del Conocimiento s/n, 18016 Granada, Spain
- Correspondence: (M.H.); (M.K.)
| | - Michail Kotsyfakis
- Institute of Parasitology, Biology Centre, Czech Academy of Sciences, 37005 Ceske Budejovice, Czech Republic
- Correspondence: (M.H.); (M.K.)
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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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11
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Bensaoud C, Tenzer S, Poplawski A, Medina JM, Jmel MA, Voet H, Mekki I, Aparicio-Puerta E, Cuveele B, Distler U, Marini F, Hackenberg M, Kotsyfakis M. Quantitative proteomics analysis reveals core and variable tick salivary proteins at the tick-vertebrate host interface. Mol Ecol 2022; 31:4162-4175. [PMID: 35661311 DOI: 10.1111/mec.16561] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2021] [Revised: 03/30/2022] [Accepted: 04/04/2022] [Indexed: 11/28/2022]
Abstract
Few studies have examined tick proteomes, how they adapt to their environment, and their roles in the parasite-host interactions that drive tick infestation and pathogen transmission. Here we used a proteomics approach to screen for biologically and immunologically relevant proteins acting at the tick-host interface during tick feeding and, as proof of principle, measured host antibody responses to some of the discovered candidates. We used a label-free quantitative proteomic workflow to study salivary proteomes of (i) wild Ixodes ricinus ticks fed on different hosts; (ii) wild or laboratory ticks fed on the same host; and (iii) adult ticks co-fed with nymphs. Our results reveal high and stable expression of several protease inhibitors and other tick-specific proteins under different feeding conditions. Most pathways functionally enriched in sialoproteomes were related to proteolysis, endopeptidase, and amine-binding activities. The generated catalog of tick salivary proteins enabled the selection of six candidate secreted immunogenic peptides for rabbit immunizations, three of which induced strong and durable antigen-specific antibody responses in rabbits. Furthermore, rabbits exposed to ticks mounted immune responses against the candidate peptides/proteins, confirming their expression at the tick-vertebrate interface. Our approach provides insights into tick adaptation strategies to different feeding conditions and promising candidates for developing anti-tick vaccines or markers of exposure of vertebrate hosts to tick bites.
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Affiliation(s)
- Chaima Bensaoud
- Institute of Parasitology, Biology Centre, Czech Academy of Sciences, Ceske Budejovice, Budweis, Czechia
| | - Stefan Tenzer
- Institute for Immunology, University Medical Center of the Johannes-Gutenberg University Mainz, Mainz, Germany
| | - Alicia Poplawski
- Institute of Medical Biostatistics, Epidemiology and Informatics, University Medical Center of the Johannes Gutenberg University Mainz, Mainz, Germany
| | - José María Medina
- Dpto. de Genética, Facultad de Ciencias, Universidad de Granada, Campus de Fuentenueva s/n, Granada, Spain.,Lab. de Bioinformática, Centro de Investigación Biomédica, PTS, Instituto de Biotecnología, Avda. del Conocimiento s/n, Granada, Spain
| | - Mohamed Amine Jmel
- Institute of Parasitology, Biology Centre, Czech Academy of Sciences, Ceske Budejovice, Budweis, Czechia
| | - Hanne Voet
- Institute of Parasitology, Biology Centre, Czech Academy of Sciences, Ceske Budejovice, Budweis, Czechia.,University of Antwerp, Wilrijk, Belgium
| | - Imen Mekki
- Institute of Parasitology, Biology Centre, Czech Academy of Sciences, Ceske Budejovice, Budweis, Czechia.,Faculty of Science, University of South Bohemia, Ceske Budejovice, Czech Republic
| | - Ernesto Aparicio-Puerta
- Dpto. de Genética, Facultad de Ciencias, Universidad de Granada, Campus de Fuentenueva s/n, Granada, Spain.,Lab. de Bioinformática, Centro de Investigación Biomédica, PTS, Instituto de Biotecnología, Avda. del Conocimiento s/n, Granada, Spain
| | - Brent Cuveele
- Institute of Parasitology, Biology Centre, Czech Academy of Sciences, Ceske Budejovice, Budweis, Czechia.,University of Antwerp, Wilrijk, Belgium
| | - Ute Distler
- Institute for Immunology, University Medical Center of the Johannes-Gutenberg University Mainz, Mainz, Germany
| | - Federico Marini
- Institute of Medical Biostatistics, Epidemiology and Informatics, University Medical Center of the Johannes Gutenberg University Mainz, Mainz, Germany
| | - Michael Hackenberg
- Dpto. de Genética, Facultad de Ciencias, Universidad de Granada, Campus de Fuentenueva s/n, Granada, Spain.,Lab. de Bioinformática, Centro de Investigación Biomédica, PTS, Instituto de Biotecnología, Avda. del Conocimiento s/n, Granada, Spain
| | - Michalis Kotsyfakis
- Institute of Parasitology, Biology Centre, Czech Academy of Sciences, Ceske Budejovice, Budweis, Czechia
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Abbas MN, Chlastáková A, Jmel MA, Iliaki-Giannakoudaki E, Chmelař J, Kotsyfakis M. Serpins in Tick Physiology and Tick-Host Interaction. Front Cell Infect Microbiol 2022; 12:892770. [PMID: 35711658 PMCID: PMC9195624 DOI: 10.3389/fcimb.2022.892770] [Citation(s) in RCA: 14] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2022] [Accepted: 04/22/2022] [Indexed: 11/13/2022] Open
Abstract
Tick saliva has been extensively studied in the context of tick-host interactions because it is involved in host homeostasis modulation and microbial pathogen transmission to the host. Accumulated knowledge about the tick saliva composition at the molecular level has revealed that serine protease inhibitors play a key role in the tick-host interaction. Serpins are one highly expressed group of protease inhibitors in tick salivary glands, their expression can be induced during tick blood-feeding, and they have many biological functions at the tick-host interface. Indeed, tick serpins have an important role in inhibiting host hemostatic processes and in the modulation of the innate and adaptive immune responses of their vertebrate hosts. Tick serpins have also been studied as potential candidates for therapeutic use and vaccine development. In this review, we critically summarize the current state of knowledge about the biological role of tick serpins in shaping tick-host interactions with emphasis on the mechanisms by which they modulate host immunity. Their potential use in drug and vaccine development is also discussed.
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Affiliation(s)
- Muhammad Nadeem Abbas
- State Key Laboratory of Silkworm Genome Biology, Key Laboratory of Sericultural Biology and Genetic Breeding, Ministry of Agriculture, Southwest University, Chongqing, China
| | - Adéla Chlastáková
- Department of Medical Biology, Faculty of Science, University of South Bohemia in České Budějovice, České Budějovice, Czechia
- Laboratory of Molecular Biology of Ticks, Institute of Parasitology, Biology Centre of the Czech Academy of Sciences, České Budějovice, Czechia
| | - Mohamed Amine Jmel
- Laboratory of Genomics and Proteomics of Disease Vectors, Institute of Parasitology, Biology Centre of the Czech Academy of Sciences, České Budějovice, Czechia
| | | | - Jindřich Chmelař
- Department of Medical Biology, Faculty of Science, University of South Bohemia in České Budějovice, České Budějovice, Czechia
- *Correspondence: Jindřich Chmelař, ; Michail Kotsyfakis,
| | - Michail Kotsyfakis
- Laboratory of Genomics and Proteomics of Disease Vectors, Institute of Parasitology, Biology Centre of the Czech Academy of Sciences, České Budějovice, Czechia
- *Correspondence: Jindřich Chmelař, ; Michail Kotsyfakis,
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Maqbool M, Sajid MS, Saqib M, Anjum FR, Tayyab MH, Rizwan HM, Rashid MI, Rashid I, Iqbal A, Siddique RM, Shamim A, Hassan MA, Atif FA, Razzaq A, Zeeshan M, Hussain K, Nisar RHA, Tanveer A, Younas S, Kamran K, Rahman SU. Potential Mechanisms of Transmission of Tick-Borne Viruses at the Virus-Tick Interface. Front Microbiol 2022; 13:846884. [PMID: 35602013 PMCID: PMC9121816 DOI: 10.3389/fmicb.2022.846884] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/31/2021] [Accepted: 03/18/2022] [Indexed: 11/13/2022] Open
Abstract
Ticks (Acari; Ixodidae) are the second most important vector for transmission of pathogens to humans, livestock, and wildlife. Ticks as vectors for viruses have been reported many times over the last 100 years. Tick-borne viruses (TBVs) belong to two orders (Bunyavirales and Mononegavirales) containing nine families (Bunyaviridae, Rhabdoviridae, Asfarviridae, Orthomyxovirida, Reoviridae, Flaviviridae, Phenuviridae, Nyamiviridae, and Nairoviridae). Among these TBVs, some are very pathogenic, causing huge mortality, and hence, deserve to be covered under the umbrella of one health. About 38 viral species are being transmitted by <10% of the tick species of the families Ixodidae and Argasidae. All TBVs are RNA viruses except for the African swine fever virus from the family Asfarviridae. Tick-borne viral diseases have also been classified as an emerging threat to public health and animals, especially in resource-poor communities of the developing world. Tick-host interaction plays an important role in the successful transmission of pathogens. The ticks' salivary glands are the main cellular machinery involved in the uptake, settlement, and multiplication of viruses, which are required for successful transmission into the final host. Furthermore, tick saliva also participates as an augmenting tool during the physiological process of transmission. Tick saliva is an important key element in the successful transmission of pathogens and contains different antimicrobial proteins, e.g., defensin, serine, proteases, and cement protein, which are key players in tick-virus interaction. While tick-virus interaction is a crucial factor in the propagation of tick-borne viral diseases, other factors (physiological, immunological, and gut flora) are also involved. Some immunological factors, e.g., toll-like receptors, scavenger receptors, Janus-kinase (JAK-STAT) pathway, and immunodeficiency (IMD) pathway are involved in tick-virus interaction by helping in virus assembly and acting to increase transmission. Ticks also harbor some endogenous viruses as internal microbial faunas, which also play a significant role in tick-virus interaction. Studies focusing on tick saliva and its role in pathogen transmission, tick feeding, and control of ticks using functional genomics all point toward solutions to this emerging threat. Information regarding tick-virus interaction is somewhat lacking; however, this information is necessary for a complete understanding of transmission TBVs and their persistence in nature. This review encompasses insight into the ecology and vectorial capacity of tick vectors, as well as our current understanding of the predisposing, enabling, precipitating, and reinforcing factors that influence TBV epidemics. The review explores the cellular, biochemical, and immunological tools which ensure and augment successful evading of the ticks' defense systems and transmission of the viruses to the final hosts at the virus-vector interface. The role of functional genomics, proteomics, and metabolomics in profiling tick-virus interaction is also discussed. This review is an initial attempt to comprehensively elaborate on the epidemiological determinants of TBVs with a focus on intra-vector physiological processes involved in the successful execution of the docking, uptake, settlement, replication, and transmission processes of arboviruses. This adds valuable data to the existing bank of knowledge for global stakeholders, policymakers, and the scientific community working to devise appropriate strategies to control ticks and TBVs.
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Affiliation(s)
- Mahvish Maqbool
- Department of Parasitology, University of Agriculture, Faisalabad, Pakistan
| | - Muhammad Sohail Sajid
- Department of Parasitology, University of Agriculture, Faisalabad, Pakistan
- Department of Epidemiology and Public Health, University of Agriculture, Faisalabad, Pakistan
| | - Muhammad Saqib
- Department of Clinical Medicine and Surgery, University of Agriculture, Faisalabad, Pakistan
| | - Faisal Rasheed Anjum
- Department of Epidemiology and Public Health, University of Agriculture, Faisalabad, Pakistan
- Institute of Microbiology, University of Agriculture, Faisalabad, Pakistan
| | - Muhammad Haleem Tayyab
- Department of Clinical Medicine and Surgery, University of Agriculture, Faisalabad, Pakistan
| | - Hafiz Muhammad Rizwan
- Section of Parasitology, Department of Pathobiology, KBCMA College of Veterinary and Animal Sciences Narowal, Lahore, Pakistan
| | - Muhammad Imran Rashid
- Department of Parasitology, University of Veterinary and Animal Sciences, Lahore, Pakistan
| | - Imaad Rashid
- Department of Clinical Medicine and Surgery, University of Agriculture, Faisalabad, Pakistan
| | - Asif Iqbal
- Section of Parasitology, Department of Pathobiology, Riphah College of Veterinary Sciences, Riphah International University, Lahore, Pakistan
| | - Rao Muhammad Siddique
- Section of Parasitology, Department of Pathobiology, Riphah College of Veterinary Sciences, Riphah International University, Lahore, Pakistan
| | - Asim Shamim
- Department of Pathobiology, University of the Poonch Rawalakot, Rawalakot, Pakistan
| | - Muhammad Adeel Hassan
- Department of Parasitology, Cholistan University of Veterinary and Animal Sciences, Bahawalpur, Pakistan
| | - Farhan Ahmad Atif
- Medicine Section, Department of Clinical Sciences, Collège of Veterinary and Animal Sciences, Jhang, Pakistan
- University of Veterinary and Animal Sciences, Lahore, Pakistan
| | - Abdul Razzaq
- Agricultural Linkages Program, Pakistan Agriculture Research Council, Islamabad, Pakistan
| | - Muhammad Zeeshan
- Department of Parasitology, University of Agriculture, Faisalabad, Pakistan
| | - Kashif Hussain
- Department of Parasitology, University of Agriculture, Faisalabad, Pakistan
| | | | - Akasha Tanveer
- Department of Parasitology, University of Agriculture, Faisalabad, Pakistan
| | - Sahar Younas
- Department of Parasitology, University of Agriculture, Faisalabad, Pakistan
| | - Kashif Kamran
- Department of Zoology, University of Balochistan, Quetta, Pakistan
| | - Sajjad ur Rahman
- Institute of Microbiology, University of Agriculture, Faisalabad, Pakistan
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Ali A, Zeb I, Alouffi A, Zahid H, Almutairi MM, Ayed Alshammari F, Alrouji M, Termignoni C, Vaz IDS, Tanaka T. Host Immune Responses to Salivary Components - A Critical Facet of Tick-Host Interactions. Front Cell Infect Microbiol 2022; 12:809052. [PMID: 35372098 PMCID: PMC8966233 DOI: 10.3389/fcimb.2022.809052] [Citation(s) in RCA: 19] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2021] [Accepted: 02/04/2022] [Indexed: 12/15/2022] Open
Abstract
Tick sialome is comprised of a rich cocktail of bioactive molecules that function as a tool to disarm host immunity, assist blood-feeding, and play a vibrant role in pathogen transmission. The adaptation of the tick's blood-feeding behavior has lead to the evolution of bioactive molecules in its saliva to assist them to overwhelm hosts' defense mechanisms. During a blood meal, a tick secretes different salivary molecules including vasodilators, platelet aggregation inhibitors, anticoagulants, anti-inflammatory proteins, and inhibitors of complement activation; the salivary repertoire changes to meet various needs such as tick attachment, feeding, and modulation or impairment of the local dynamic and vigorous host responses. For instance, the tick's salivary immunomodulatory and cement proteins facilitate the tick's attachment to the host to enhance prolonged blood-feeding and to modulate the host's innate and adaptive immune responses. Recent advances implemented in the field of "omics" have substantially assisted our understanding of host immune modulation and immune inhibition against the molecular dynamics of tick salivary molecules in a crosstalk between the tick-host interface. A deep understanding of the tick salivary molecules, their substantial roles in multifactorial immunological cascades, variations in secretion, and host immune responses against these molecules is necessary to control these parasites. In this article, we reviewed updated knowledge about the molecular mechanisms underlying host responses to diverse elements in tick saliva throughout tick invasion, as well as host defense strategies. In conclusion, understanding the mechanisms involved in the complex interactions between the tick salivary components and host responses is essential to decipher the host defense mechanisms against the tick evasion strategies at tick-host interface which is promising in the development of effective anti-tick vaccines and drug therapeutics.
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Affiliation(s)
- Abid Ali
- Department of Zoology, Abdul Wali Khan University Mardan, Mardan, Pakistan
| | - Ismail Zeb
- Department of Zoology, Abdul Wali Khan University Mardan, Mardan, Pakistan
| | - Abdulaziz Alouffi
- King Abdulaziz City for Science and Technology, Riyadh, Saudi Arabia
| | - Hafsa Zahid
- Department of Zoology, Abdul Wali Khan University Mardan, Mardan, Pakistan
| | - Mashal M. Almutairi
- Department of Pharmacology and Toxicology, College of Pharmacy, King Saud University, Riyadh, Saudi Arabia
| | - Fahdah Ayed Alshammari
- College of Sciences and Literature Microbiology, Nothern Border University, Rafha, Saudi Arabia
| | - Mohammed Alrouji
- College of Applied Medical Sciences, Shaqra University, Shaqra, Saudi Arabia
| | - Carlos Termignoni
- Centro de Biotecnologia, Universidade Federal do Rio Grande do Sul, Porto Alegre, Brazil
| | - Itabajara da Silva Vaz
- Centro de Biotecnologia, Universidade Federal do Rio Grande do Sul, Porto Alegre, Brazil
| | - Tetsuya Tanaka
- Laboratory of Infectious Diseases, Joint Faculty of Veterinary Medicine, Kagoshima University, Kagoshima, Japan
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15
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Tyrosine-O-sulfation is a widespread affinity enhancer among thrombin interactors. Biochem Soc Trans 2022; 50:387-401. [PMID: 34994377 DOI: 10.1042/bst20210600] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2021] [Revised: 12/07/2021] [Accepted: 12/09/2021] [Indexed: 12/24/2022]
Abstract
Tyrosine-O-sulfation is a common post-translational modification (PTM) of proteins following the cellular secretory pathway. First described in human fibrinogen, tyrosine-O-sulfation has long been associated with the modulation of protein-protein interactions in several physiological processes. A number of relevant interactions for hemostasis are largely dictated by this PTM, many of which involving the serine proteinase thrombin (FIIa), a central player in the blood-clotting cascade. Tyrosine sulfation is not limited to endogenous FIIa ligands and has also been found in hirudin, a well-known and potent thrombin inhibitor from the medicinal leech, Hirudo medicinalis. The discovery of hirudin led to successful clinical application of analogs of leech-inspired molecules, but also unveiled several other natural thrombin-directed anticoagulant molecules, many of which undergo tyrosine-O-sulfation. The presence of this PTM has been shown to enhance the anticoagulant properties of these peptides from a range of blood-feeding organisms, including ticks, mosquitos and flies. Interestingly, some of these molecules display mechanisms of action that mimic those of thrombin's bona fide substrates.
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rDromaserpin: A Novel Anti-Hemostatic Serpin, from the Salivary Glands of the Hard Tick Hyalomma dromedarii. Toxins (Basel) 2021; 13:toxins13120913. [PMID: 34941750 PMCID: PMC8703697 DOI: 10.3390/toxins13120913] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2021] [Revised: 12/01/2021] [Accepted: 12/08/2021] [Indexed: 01/17/2023] Open
Abstract
Hemostatic disorders are caused either by platelet-related dysfunctions, defective blood coagulation, or by a combination of both, leading to an increased susceptibility to cardiovascular diseases (CVD) and other related illnesses. The unique specificity of anticoagulants from hematophagous arthropods, such as ticks, suggests that tick saliva holds great promise for discovering new treatments for these life-threatening diseases. In this study, we combined in silico and in vitro analyses to characterize the first recombinant serpin, herein called Dromaserpin, from the sialotranscriptome of the Hyalomma dromedarii tick. Our in silico data described Dromaserpin as a secreted protein of ~43 kDa with high similarities to previously characterized inhibitory serpins. The recombinant protein (rDromaserpin) was obtained as a well-structured monomer, which was tested using global blood coagulation and platelet aggregation assays. With this approach, we confirmed rDromaserpin anticoagulant activity as it significantly delayed plasma clotting in activated partial thromboplastin time and thrombin time assays. The profiling of proteolytic activity shows its capacity to inhibit thrombin in the micromolar range (0.2 to 1 μM) and in the presence of heparin this inhibition was clearly increased. It was also able to inhibit Kallikrein, FXIa and slightly FXIIa, with no significant effect on other factors. In addition, the rDromaserpin inhibited thrombin-induced platelet aggregation. Taken together, our data suggest that rDromaserpin deserves to be further investigated as a potential candidate for developing therapeutic compounds targeting disorders related to blood clotting and/or platelet aggregation.
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Kotál J, Polderdijk SGI, Langhansová H, Ederová M, Martins LA, Beránková Z, Chlastáková A, Hajdušek O, Kotsyfakis M, Huntington JA, Chmelař J. Ixodes ricinus Salivary Serpin Iripin-8 Inhibits the Intrinsic Pathway of Coagulation and Complement. Int J Mol Sci 2021; 22:ijms22179480. [PMID: 34502392 PMCID: PMC8431025 DOI: 10.3390/ijms22179480] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2021] [Revised: 08/23/2021] [Accepted: 08/26/2021] [Indexed: 01/08/2023] Open
Abstract
Tick saliva is a rich source of antihemostatic, anti-inflammatory, and immunomodulatory molecules that actively help the tick to finish its blood meal. Moreover, these molecules facilitate the transmission of tick-borne pathogens. Here we present the functional and structural characterization of Iripin-8, a salivary serpin from the tick Ixodes ricinus, a European vector of tick-borne encephalitis and Lyme disease. Iripin-8 displayed blood-meal-induced mRNA expression that peaked in nymphs and the salivary glands of adult females. Iripin-8 inhibited multiple proteases involved in blood coagulation and blocked the intrinsic and common pathways of the coagulation cascade in vitro. Moreover, Iripin-8 inhibited erythrocyte lysis by complement, and Iripin-8 knockdown by RNA interference in tick nymphs delayed the feeding time. Finally, we resolved the crystal structure of Iripin-8 at 1.89 Å resolution to reveal an unusually long and rigid reactive center loop that is conserved in several tick species. The P1 Arg residue is held in place distant from the serpin body by a conserved poly-Pro element on the P′ side. Several PEG molecules bind to Iripin-8, including one in a deep cavity, perhaps indicating the presence of a small-molecule binding site. This is the first crystal structure of a tick serpin in the native state, and Iripin-8 is a tick serpin with a conserved reactive center loop that possesses antihemostatic activity that may mediate interference with host innate immunity.
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Affiliation(s)
- Jan Kotál
- Department of Medical Biology, Faculty of Science, University of South Bohemia in České Budějovice, Branišovská 1760c, 37005 České Budějovice, Czech Republic; (J.K.); (H.L.); (M.E.); (Z.B.); (A.C.); (M.K.)
- Laboratory of Genomics and Proteomics of Disease Vectors, Institute of Parasitology, Biology Center CAS, Branišovská 1160/31, 37005 České Budějovice, Czech Republic;
| | - Stéphanie G. I. Polderdijk
- Cambridge Institute for Medical Research, Department of Haematology, University of Cambridge, The Keith Peters Building, Hills Road, Cambridge CB2 0XY, UK; (S.G.I.P.); (J.A.H.)
| | - Helena Langhansová
- Department of Medical Biology, Faculty of Science, University of South Bohemia in České Budějovice, Branišovská 1760c, 37005 České Budějovice, Czech Republic; (J.K.); (H.L.); (M.E.); (Z.B.); (A.C.); (M.K.)
| | - Monika Ederová
- Department of Medical Biology, Faculty of Science, University of South Bohemia in České Budějovice, Branišovská 1760c, 37005 České Budějovice, Czech Republic; (J.K.); (H.L.); (M.E.); (Z.B.); (A.C.); (M.K.)
| | - Larissa A. Martins
- Laboratory of Genomics and Proteomics of Disease Vectors, Institute of Parasitology, Biology Center CAS, Branišovská 1160/31, 37005 České Budějovice, Czech Republic;
| | - Zuzana Beránková
- Department of Medical Biology, Faculty of Science, University of South Bohemia in České Budějovice, Branišovská 1760c, 37005 České Budějovice, Czech Republic; (J.K.); (H.L.); (M.E.); (Z.B.); (A.C.); (M.K.)
| | - Adéla Chlastáková
- Department of Medical Biology, Faculty of Science, University of South Bohemia in České Budějovice, Branišovská 1760c, 37005 České Budějovice, Czech Republic; (J.K.); (H.L.); (M.E.); (Z.B.); (A.C.); (M.K.)
| | - Ondřej Hajdušek
- Laboratory of Vector Immunology, Institute of Parasitology, Biology Center CAS, Branišovská 1160/31, 37005 České Budějovice, Czech Republic;
| | - Michail Kotsyfakis
- Department of Medical Biology, Faculty of Science, University of South Bohemia in České Budějovice, Branišovská 1760c, 37005 České Budějovice, Czech Republic; (J.K.); (H.L.); (M.E.); (Z.B.); (A.C.); (M.K.)
- Laboratory of Genomics and Proteomics of Disease Vectors, Institute of Parasitology, Biology Center CAS, Branišovská 1160/31, 37005 České Budějovice, Czech Republic;
| | - James A. Huntington
- Cambridge Institute for Medical Research, Department of Haematology, University of Cambridge, The Keith Peters Building, Hills Road, Cambridge CB2 0XY, UK; (S.G.I.P.); (J.A.H.)
| | - Jindřich Chmelař
- Department of Medical Biology, Faculty of Science, University of South Bohemia in České Budějovice, Branišovská 1760c, 37005 České Budějovice, Czech Republic; (J.K.); (H.L.); (M.E.); (Z.B.); (A.C.); (M.K.)
- Correspondence:
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Kitsou C, Fikrig E, Pal U. Tick host immunity: vector immunomodulation and acquired tick resistance. Trends Immunol 2021; 42:554-574. [PMID: 34074602 PMCID: PMC10089699 DOI: 10.1016/j.it.2021.05.005] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2021] [Revised: 05/04/2021] [Accepted: 05/06/2021] [Indexed: 12/25/2022]
Abstract
Ticks have an unparalleled ability to parasitize diverse land vertebrates. Their natural persistence and vector competence are supported by the evolution of sophisticated hematophagy and remarkable host immune-evasion activities. We analyze the immunomodulatory roles of tick saliva which facilitates their acquisition of a blood meal from natural hosts and allows pathogen transmission. We also discuss the contrasting immunological events of tick-host associations in non-reservoir or incidental hosts, in which the development of acquired tick resistance can deter tick attachment. A critical appraisal of the intricate immunobiology of tick-host associations can plant new seeds of innovative research and contribute to the development of novel preventive strategies against ticks and tick-transmitted infections.
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Affiliation(s)
- Chrysoula Kitsou
- Department of Veterinary Medicine, University of Maryland, College Park, MD, USA
| | - Erol Fikrig
- Section of Infectious Diseases, Department of Internal Medicine, Yale University School of Medicine, New Haven, CT, USA; Howard Hughes Medical Institute, Chevy Chase, MD, USA
| | - Utpal Pal
- Department of Veterinary Medicine, University of Maryland, College Park, MD, USA; Virginia-Maryland College of Veterinary Medicine, College Park, MD, USA.
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19
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Nogueira BCF, Campos AK, Alves RS, de Cássia Vieira Faria R, Sarandy MM, Fonseca E Silva F, Gonçalves RV. Oxidative and local histopathological response on skin wound of horses due to Amblyomma sculptum tick parasitism. Res Vet Sci 2021; 136:550-560. [PMID: 33892365 DOI: 10.1016/j.rvsc.2021.04.013] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2020] [Revised: 03/31/2021] [Accepted: 04/12/2021] [Indexed: 10/21/2022]
Abstract
Amblyomma sculptum is frequently observed parasitizing horses, responsible for economic losses, damage to the host''s skin and transmission of pathogens. The oxidative stress profile and inflammatory mechanisms involved in this parasitism remain poorly studied. Thus, this study aimed to assess the histopathological changes and oxidative profile responses of horses in the attachment site of A. sculptum to find variations that indicate resistance and susceptibility between the breeds to this tick, based on the hypothesis that resistant animals have a greater inflammatory response and lesser number of attached ticks. We analyzed female horses of two breeds, Mangalarga Marchador and Breton Postier, naturally infested by Amblyomma sculptum. The ticks were counted and full-thickness excisional skin wounds of 10 mm were made on the perineal region on the attachment site of partially engorged females for histological and biochemical analyzes. The occurrence of the tick on the skin caused an increase in cellularity, inflammatory infiltrate, mast cells, pyknotic nuclei, and changes in the fibrous components of the matrix. The negative correlation observed between tick infestation and inflammatory response indicated that animals with greater inflammatory response tend to have less tick infestation. The oxidative stress markers, MDA, PCN and NO not present great variation; however, between the antioxidant enzymes levels, SOD was higher in tick attachment of Breton Postier skin, this may mean that these animals had higher oxidative enzymatic activity and consequently less tissue damage, while the GST dropped in the attachment sites compared to the control, which may indicate that animals were in a state of significant oxidative stress or raises the question of the possibility of enzymatic sequestration by ticks. No significant differences were found in the resistance of the two breeds since most of the analyzes varied due to the presence or absence of the tick attached to the skin. We draw attention to the importance of studying characteristics of the animal's antioxidant responses to the tick and the action of tick saliva on antioxidant enzymes and ROS because these characteristics are interdependent with the inflammatory response.
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Affiliation(s)
| | - Artur Kanadani Campos
- Department of Veterinary Medicine, Federal University of Viçosa, Viçosa, Minas Gerais, Brazil.
| | - Raul Santos Alves
- Department of General Biology, Federal University of Viçosa, Viçosa, Minas Gerais, Brazil
| | | | | | | | - Reggiani Vilela Gonçalves
- Department of General Biology, Federal University of Viçosa, Viçosa, Minas Gerais, Brazil; Department of Animal Biology, Federal University of Viçosa, Viçosa, Minas Gerais, Brazil.
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20
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Chlastáková A, Kotál J, Beránková Z, Kaščáková B, Martins LA, Langhansová H, Prudnikova T, Ederová M, Kutá Smatanová I, Kotsyfakis M, Chmelař J. Iripin-3, a New Salivary Protein Isolated From Ixodes ricinus Ticks, Displays Immunomodulatory and Anti-Hemostatic Properties In Vitro. Front Immunol 2021; 12:626200. [PMID: 33732248 PMCID: PMC7957079 DOI: 10.3389/fimmu.2021.626200] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2020] [Accepted: 01/06/2021] [Indexed: 12/13/2022] Open
Abstract
Tick saliva is a rich source of pharmacologically and immunologically active molecules. These salivary components are indispensable for successful blood feeding on vertebrate hosts and are believed to facilitate the transmission of tick-borne pathogens. Here we present the functional and structural characterization of Iripin-3, a protein expressed in the salivary glands of the tick Ixodes ricinus, a European vector of tick-borne encephalitis and Lyme disease. Belonging to the serpin superfamily of protease inhibitors, Iripin-3 strongly inhibited the proteolytic activity of serine proteases kallikrein and matriptase. In an in vitro setup, Iripin-3 was capable of modulating the adaptive immune response as evidenced by reduced survival of mouse splenocytes, impaired proliferation of CD4+ T lymphocytes, suppression of the T helper type 1 immune response, and induction of regulatory T cell differentiation. Apart from altering acquired immunity, Iripin-3 also inhibited the extrinsic blood coagulation pathway and reduced the production of pro-inflammatory cytokine interleukin-6 by lipopolysaccharide-stimulated bone marrow-derived macrophages. In addition to its functional characterization, we present the crystal structure of cleaved Iripin-3 at 1.95 Å resolution. Iripin-3 proved to be a pluripotent salivary serpin with immunomodulatory and anti-hemostatic properties that could facilitate tick feeding via the suppression of host anti-tick defenses. Physiological relevance of Iripin-3 activities observed in vitro needs to be supported by appropriate in vivo experiments.
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Affiliation(s)
- Adéla Chlastáková
- Department of Medical Biology, Faculty of Science, University of South Bohemia in České Budějovice, České Budějovice, Czechia
| | - Jan Kotál
- Department of Medical Biology, Faculty of Science, University of South Bohemia in České Budějovice, České Budějovice, Czechia
- Laboratory of Genomics and Proteomics of Disease Vectors, Institute of Parasitology, Biology Centre of the Czech Academy of Sciences, České Budějovice, Czechia
| | - Zuzana Beránková
- Department of Medical Biology, Faculty of Science, University of South Bohemia in České Budějovice, České Budějovice, Czechia
| | - Barbora Kaščáková
- Laboratory of Structural Chemistry, Institute of Chemistry, Faculty of Science, University of South Bohemia in České Budějovice, České Budějovice, Czechia
| | - Larissa Almeida Martins
- Laboratory of Genomics and Proteomics of Disease Vectors, Institute of Parasitology, Biology Centre of the Czech Academy of Sciences, České Budějovice, Czechia
| | - Helena Langhansová
- Department of Medical Biology, Faculty of Science, University of South Bohemia in České Budějovice, České Budějovice, Czechia
| | - Tatyana Prudnikova
- Laboratory of Structural Chemistry, Institute of Chemistry, Faculty of Science, University of South Bohemia in České Budějovice, České Budějovice, Czechia
| | - Monika Ederová
- Department of Medical Biology, Faculty of Science, University of South Bohemia in České Budějovice, České Budějovice, Czechia
| | - Ivana Kutá Smatanová
- Laboratory of Structural Chemistry, Institute of Chemistry, Faculty of Science, University of South Bohemia in České Budějovice, České Budějovice, Czechia
| | - Michail Kotsyfakis
- Department of Medical Biology, Faculty of Science, University of South Bohemia in České Budějovice, České Budějovice, Czechia
- Laboratory of Genomics and Proteomics of Disease Vectors, Institute of Parasitology, Biology Centre of the Czech Academy of Sciences, České Budějovice, Czechia
| | - Jindřich Chmelař
- Department of Medical Biology, Faculty of Science, University of South Bohemia in České Budějovice, České Budějovice, Czechia
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21
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Boulanger N, Wikel S. Induced Transient Immune Tolerance in Ticks and Vertebrate Host: A Keystone of Tick-Borne Diseases? Front Immunol 2021; 12:625993. [PMID: 33643313 PMCID: PMC7907174 DOI: 10.3389/fimmu.2021.625993] [Citation(s) in RCA: 24] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2020] [Accepted: 01/22/2021] [Indexed: 12/23/2022] Open
Abstract
Ticks and tick transmitted infectious agents are increasing global public health threats due to increasing abundance, expanding geographic ranges of vectors and pathogens, and emerging tick-borne infectious agents. Greater understanding of tick, host, and pathogen interactions will contribute to development of novel tick control and disease prevention strategies. Tick-borne pathogens adapt in multiple ways to very different tick and vertebrate host environments and defenses. Ticks effectively pharmacomodulate by its saliva host innate and adaptive immune defenses. In this review, we examine the idea that successful synergy between tick and tick-borne pathogen results in host immune tolerance that facilitates successful tick infection and feeding, creates a favorable site for pathogen introduction, modulates cutaneous and systemic immune defenses to establish infection, and contributes to successful long-term infection. Tick, host, and pathogen elements examined here include interaction of tick innate immunity and microbiome with tick-borne pathogens; tick modulation of host cutaneous defenses prior to pathogen transmission; how tick and pathogen target vertebrate host defenses that lead to different modes of interaction and host infection status (reservoir, incompetent, resistant, clinically ill); tick saliva bioactive molecules as important factors in determining those pathogens for which the tick is a competent vector; and, the need for translational studies to advance this field of study. Gaps in our understanding of these relationships are identified, that if successfully addressed, can advance the development of strategies to successfully disrupt both tick feeding and pathogen transmission.
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Affiliation(s)
- Nathalie Boulanger
- Fédération de Médecine Translationnelle - UR7290, Early Bacterial Virulence, Group Borrelia, Université de Strasbourg, Strasbourg, France.,Centre National de Référence Borrelia, Centre Hospitalier Universitaire, Strasbourg, France
| | - Stephen Wikel
- Department of Medical Sciences, Frank H. Netter, M.D., School of Medicine, Quinnipiac University, Hamden, CT, United States
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22
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Costa GCA, Ribeiro ICT, Melo-Junior O, Gontijo NF, Sant'Anna MRV, Pereira MH, Pessoa GCD, Koerich LB, Oliveira F, Valenzuela JG, Giunchetti RC, Fujiwara RT, Bartholomeu DC, Araujo RN. Amblyomma sculptum Salivary Protease Inhibitors as Potential Anti-Tick Vaccines. Front Immunol 2021; 11:611104. [PMID: 33633731 PMCID: PMC7901972 DOI: 10.3389/fimmu.2020.611104] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2020] [Accepted: 12/17/2020] [Indexed: 11/20/2022] Open
Abstract
Amblyomma sculptum is the main tick associated with human bites in Brazil and the main vector of Rickettsia rickettsii, the causative agent of the most severe form of Brazilian spotted fever. Molecules produced in the salivary glands are directly related to feeding success and vector competence. In the present study, we identified sequences of A. sculptum salivary proteins that may be involved in hematophagy and selected three proteins that underwent functional characterization and evaluation as vaccine antigens. Among the three proteins selected, one contained a Kunitz_bovine pancreatic trypsin inhibitor domain (named AsKunitz) and the other two belonged to the 8.9 kDa and basic tail families of tick salivary proteins (named As8.9kDa and AsBasicTail). Expression of the messenger RNA (mRNA) encoding all three proteins was detected in the larvae, nymphs, and females at basal levels in unfed ticks and the expression levels increased after the start of feeding. Recombinant proteins rAs8.9kDa and rAsBasicTail inhibited the enzymatic activity of factor Xa, thrombin, and trypsin, whereas rAsKunitz inhibited only thrombin activity. All three recombinant proteins inhibited the hemolysis of both the classical and alternative pathways; this is the first description of tick members of the Kunitz and 8.9kDa families being inhibitors of the classical complement pathway. Mice immunization with recombinant proteins caused efficacies against A. sculptum females from 59.4% with rAsBasicTail immunization to more than 85% by immunization with rAsKunitz and rAs8.9kDa. The mortality of nymphs fed on immunized mice reached 70–100%. Therefore, all three proteins are potential antigens with the possibility of becoming a new tool in the control of A. sculptum.
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Affiliation(s)
- Gabriel Cerqueira Alves Costa
- Laboratory of Physiology of Hematophagous Insects, Department of Parasitology, Universidade Federal de Minas Gerais, Belo Horizonte, Brazil
| | - Izabela Cosso Tavares Ribeiro
- Laboratory of Physiology of Hematophagous Insects, Department of Parasitology, Universidade Federal de Minas Gerais, Belo Horizonte, Brazil
| | - Otoni Melo-Junior
- Laboratory of Cell-Cell Interactions, Department of Morphology, Universidade Federal de Minas Gerais, Belo Horizonte, Brazil
| | - Nelder F Gontijo
- Laboratory of Physiology of Hematophagous Insects, Department of Parasitology, Universidade Federal de Minas Gerais, Belo Horizonte, Brazil.,Instituto Nacional de Ciência e Tecnologia em Entomologia Molecular, Rio de Janeiro, Brazil
| | - Mauricio R V Sant'Anna
- Laboratory of Physiology of Hematophagous Insects, Department of Parasitology, Universidade Federal de Minas Gerais, Belo Horizonte, Brazil.,Instituto Nacional de Ciência e Tecnologia em Entomologia Molecular, Rio de Janeiro, Brazil
| | - Marcos H Pereira
- Laboratory of Physiology of Hematophagous Insects, Department of Parasitology, Universidade Federal de Minas Gerais, Belo Horizonte, Brazil.,Instituto Nacional de Ciência e Tecnologia em Entomologia Molecular, Rio de Janeiro, Brazil
| | - Grasielle C D Pessoa
- Laboratory of Physiology of Hematophagous Insects, Department of Parasitology, Universidade Federal de Minas Gerais, Belo Horizonte, Brazil.,Instituto Nacional de Ciência e Tecnologia em Entomologia Molecular, Rio de Janeiro, Brazil
| | - Leonardo B Koerich
- Laboratory of Physiology of Hematophagous Insects, Department of Parasitology, Universidade Federal de Minas Gerais, Belo Horizonte, Brazil.,Instituto Nacional de Ciência e Tecnologia em Entomologia Molecular, Rio de Janeiro, Brazil
| | - Fabiano Oliveira
- Section of Vector Biology, Laboratory of Malaria and Vector Research, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, MD, United States
| | - Jesus G Valenzuela
- Section of Vector Biology, Laboratory of Malaria and Vector Research, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, MD, United States
| | - Rodolfo Cordeiro Giunchetti
- Laboratory of Cell-Cell Interactions, Department of Morphology, Universidade Federal de Minas Gerais, Belo Horizonte, Brazil
| | - Ricardo Toshio Fujiwara
- Laboratory of Immunology and Genomics of Parasites, Department of Parasitology, Universidade Federal de Minas Gerais, Belo Horizonte, Brazil
| | - Daniella Castanheira Bartholomeu
- Laboratory of Immunology and Genomics of Parasites, Department of Parasitology, Universidade Federal de Minas Gerais, Belo Horizonte, Brazil
| | - Ricardo N Araujo
- Laboratory of Physiology of Hematophagous Insects, Department of Parasitology, Universidade Federal de Minas Gerais, Belo Horizonte, Brazil.,Instituto Nacional de Ciência e Tecnologia em Entomologia Molecular, Rio de Janeiro, Brazil
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23
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Jmel MA, Aounallah H, Bensaoud C, Mekki I, Chmelař J, Faria F, M’ghirbi Y, Kotsyfakis M. Insights into the Role of Tick Salivary Protease Inhibitors during Ectoparasite-Host Crosstalk. Int J Mol Sci 2021; 22:E892. [PMID: 33477394 PMCID: PMC7831016 DOI: 10.3390/ijms22020892] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/25/2020] [Revised: 01/12/2021] [Accepted: 01/13/2021] [Indexed: 02/07/2023] Open
Abstract
Protease inhibitors (PIs) are ubiquitous regulatory proteins present in all kingdoms. They play crucial tasks in controlling biological processes directed by proteases which, if not tightly regulated, can damage the host organism. PIs can be classified according to their targeted proteases or their mechanism of action. The functions of many PIs have now been characterized and are showing clinical relevance for the treatment of human diseases such as arthritis, hepatitis, cancer, AIDS, and cardiovascular diseases, amongst others. Other PIs have potential use in agriculture as insecticides, anti-fungal, and antibacterial agents. PIs from tick salivary glands are special due to their pharmacological properties and their high specificity, selectivity, and affinity to their target proteases at the tick-host interface. In this review, we discuss the structure and function of PIs in general and those PI superfamilies abundant in tick salivary glands to illustrate their possible practical applications. In doing so, we describe tick salivary PIs that are showing promise as drug candidates, highlighting the most promising ones tested in vivo and which are now progressing to preclinical and clinical trials.
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Affiliation(s)
- Mohamed Amine Jmel
- Laboratory of Genomics and Proteomics of Disease Vectors, Biology Centre CAS, Institute of Parasitology, Branišovská 1160/31, 37005 České Budějovice, Czech Republic; (M.A.J.); (C.B.); (I.M.)
| | - Hajer Aounallah
- Institut Pasteur de Tunis, Université de Tunis El Manar, LR19IPTX, Service d’Entomologie Médicale, Tunis 1002, Tunisia; (H.A.); (Y.M.)
- Innovation and Development Laboratory, Innovation and Development Center, Instituto Butantan, São Paulo 05503-900, Brazil;
| | - Chaima Bensaoud
- Laboratory of Genomics and Proteomics of Disease Vectors, Biology Centre CAS, Institute of Parasitology, Branišovská 1160/31, 37005 České Budějovice, Czech Republic; (M.A.J.); (C.B.); (I.M.)
| | - Imen Mekki
- Laboratory of Genomics and Proteomics of Disease Vectors, Biology Centre CAS, Institute of Parasitology, Branišovská 1160/31, 37005 České Budějovice, Czech Republic; (M.A.J.); (C.B.); (I.M.)
- Faculty of Science, University of South Bohemia in České Budějovice, 37005 České Budějovice, Czech Republic;
| | - Jindřich Chmelař
- Faculty of Science, University of South Bohemia in České Budějovice, 37005 České Budějovice, Czech Republic;
| | - Fernanda Faria
- Innovation and Development Laboratory, Innovation and Development Center, Instituto Butantan, São Paulo 05503-900, Brazil;
| | - Youmna M’ghirbi
- Institut Pasteur de Tunis, Université de Tunis El Manar, LR19IPTX, Service d’Entomologie Médicale, Tunis 1002, Tunisia; (H.A.); (Y.M.)
| | - Michalis Kotsyfakis
- Laboratory of Genomics and Proteomics of Disease Vectors, Biology Centre CAS, Institute of Parasitology, Branišovská 1160/31, 37005 České Budějovice, Czech Republic; (M.A.J.); (C.B.); (I.M.)
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24
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Martins LA, Bensaoud C, Kotál J, Chmelař J, Kotsyfakis M. Tick salivary gland transcriptomics and proteomics. Parasite Immunol 2020; 43:e12807. [PMID: 33135186 DOI: 10.1111/pim.12807] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2020] [Revised: 10/27/2020] [Accepted: 10/27/2020] [Indexed: 12/14/2022]
Abstract
'Omics' technologies have facilitated the identification of hundreds to thousands of tick molecules that mediate tick feeding and play a role in the transmission of tick-borne diseases. Deep sequencing methodologies have played a key role in this knowledge accumulation, profoundly facilitating the study of the biology of disease vectors lacking reference genomes. For example, the nucleotide sequences of the entire set of tick salivary effectors, the so-called tick 'sialome', now contain at least one order of magnitude more transcript sequences compared to similar projects based on Sanger sequencing. Tick feeding is a complex and dynamic process, and while the dynamic 'sialome' is thought to mediate tick feeding success, exactly how transcriptome dynamics relate to tick-host-pathogen interactions is still largely unknown. The identification and, importantly, the functional analysis of the tick 'sialome' is expected to shed light on this 'black box'. This information will be crucial for developing strategies to block pathogen transmission, not only for anti-tick vaccine development but also the discovery and development of new, pharmacologically active compounds for human diseases.
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Affiliation(s)
- Larissa Almeida Martins
- Institute of Parasitology, Biology Centre, Czech Academy of Sciences, České Budějovice, 37005, Czech Republic
| | - Chaima Bensaoud
- Institute of Parasitology, Biology Centre, Czech Academy of Sciences, České Budějovice, 37005, Czech Republic
| | - Jan Kotál
- Institute of Parasitology, Biology Centre, Czech Academy of Sciences, České Budějovice, 37005, Czech Republic.,Department of Medical Biology, Faculty of Science, University of South Bohemia, České Budějovice, Czech Republic
| | - Jindřich Chmelař
- Department of Medical Biology, Faculty of Science, University of South Bohemia, České Budějovice, Czech Republic
| | - Michail Kotsyfakis
- Institute of Parasitology, Biology Centre, Czech Academy of Sciences, České Budějovice, 37005, Czech Republic.,Department of Medical Biology, Faculty of Science, University of South Bohemia, České Budějovice, Czech Republic
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25
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Karim S, Kumar D, Adamson S, Ennen JR, Qualls CP, Ribeiro JMC. The sialotranscriptome of the gopher-tortoise tick, Amblyomma tuberculatum. Ticks Tick Borne Dis 2020; 12:101560. [PMID: 33007669 DOI: 10.1016/j.ttbdis.2020.101560] [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: 06/23/2020] [Revised: 08/07/2020] [Accepted: 09/14/2020] [Indexed: 12/16/2022]
Abstract
The gopher tortoise tick, Amblyomma tuberculatum, is known to parasitize keystone ectotherm reptile species. The biological success of ticks requires precise mechanisms to evade host hemostatic and immune responses. Acquisition of a full blood meal requires attachment, establishment of the blood pool, and engorgement of the tick. Tick saliva contains molecules which counter the host responses to allow uninterrupted feeding on the host. RNASeq of the salivary glands of Amblyomma tuberculatum ticks were sequenced resulting in 138,030 pyrosequencing reads which were assembled into 29,991 contigs. A total of 1875 coding sequences were deduced from the transcriptome assembly, including 602 putative secretory and 982 putative housekeeping proteins. The annotated data sets are available as a hyperlinked spreadsheet. The sialotranscriptome assembled for this tick species made available a valuable resource for mining novel pharmacological activities and comparative analysis.
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Affiliation(s)
- Shahid Karim
- School of Biological, Environmental, and Earth Sciences, The University of Southern Mississippi, Hattiesburg, MS 39406, USA
| | - Deepak Kumar
- School of Biological, Environmental, and Earth Sciences, The University of Southern Mississippi, Hattiesburg, MS 39406, USA
| | - Steve Adamson
- School of Biological, Environmental, and Earth Sciences, The University of Southern Mississippi, Hattiesburg, MS 39406, USA
| | - Joshua R Ennen
- School of Biological, Environmental, and Earth Sciences, The University of Southern Mississippi, Hattiesburg, MS 39406, USA
| | - Carl P Qualls
- School of Biological, Environmental, and Earth Sciences, The University of Southern Mississippi, Hattiesburg, MS 39406, USA
| | - José M C Ribeiro
- Vector Biology Section, Laboratory of Malaria and Vector Research, National Institute of Allergy and Infectious Diseases, National Institutes of Health, 12732 Twinbrook Parkway, Room 3E28, Rockville MD 20852, USA.
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26
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Aounallah H, Bensaoud C, M'ghirbi Y, Faria F, Chmelar JI, Kotsyfakis M. Tick Salivary Compounds for Targeted Immunomodulatory Therapy. Front Immunol 2020; 11:583845. [PMID: 33072132 PMCID: PMC7538779 DOI: 10.3389/fimmu.2020.583845] [Citation(s) in RCA: 22] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2020] [Accepted: 09/02/2020] [Indexed: 12/11/2022] Open
Abstract
Immunodeficiency disorders and autoimmune diseases are common, but a lack of effective targeted drugs and the side-effects of existing drugs have stimulated interest in finding therapeutic alternatives. Naturally derived substances are a recognized source of novel drugs, and tick saliva is increasingly recognized as a rich source of bioactive molecules with specific functions. Ticks use their saliva to overcome the innate and adaptive host immune systems. Their saliva is a rich cocktail of molecules including proteins, peptides, lipid derivatives, and recently discovered non-coding RNAs that inhibit or modulate vertebrate immune reactions. A number of tick saliva and/or salivary gland molecules have been characterized and shown to be promising candidates for drug development for vertebrate immune diseases. However, further validation of these molecules at the molecular, cellular, and organism levels is now required to progress lead candidates to clinical testing. In this paper, we review the data on the immuno-pharmacological aspects of tick salivary compounds characterized in vitro and/or in vivo and present recent findings on non-coding RNAs that might be exploitable as immunomodulatory therapies.
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Affiliation(s)
- Hajer Aounallah
- Institut Pasteur de Tunis, LR19IPTX, Service d'Entomologie Médicale, Université de Tunis El Manar, Tunis, Tunisia.,Innovation and Development Laboratory, Innovation and Development Center, Instituto Butantan, São Paulo, Brazil
| | - Chaima Bensaoud
- Institute of Parasitology, Biology Centre, Czech Academy of Sciences, České Budějovice, Czechia
| | - Youmna M'ghirbi
- Institut Pasteur de Tunis, LR19IPTX, Service d'Entomologie Médicale, Université de Tunis El Manar, Tunis, Tunisia
| | - Fernanda Faria
- Innovation and Development Laboratory, Innovation and Development Center, Instituto Butantan, São Paulo, Brazil
| | - Jindr Ich Chmelar
- Department of Medical Biology, Faculty of Science, University of South Bohemia in České Budějovice, České Budějovice, Czechia
| | - Michail Kotsyfakis
- Institute of Parasitology, Biology Centre, Czech Academy of Sciences, České Budějovice, Czechia.,Department of Medical Biology, Faculty of Science, University of South Bohemia in České Budějovice, České Budějovice, Czechia
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27
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AmbuAli A, Monaghan SJ, McLean K, Inglis NF, Bekaert M, Wehner S, Bron JE. Identification of proteins from the secretory/excretory products (SEPs) of the branchiuran ectoparasite Argulus foliaceus (Linnaeus, 1758) reveals unique secreted proteins amongst haematophagous ecdysozoa. Parasit Vectors 2020; 13:88. [PMID: 32070416 PMCID: PMC7029603 DOI: 10.1186/s13071-020-3964-z] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2019] [Accepted: 02/13/2020] [Indexed: 01/01/2023] Open
Abstract
BACKGROUND It is hypothesised that being a blood-feeding ectoparasite, Argulus foliaceus (Linnaeus, 1758), uses similar mechanisms for digestion and host immune evasion to those used by other haematophagous ecdysozoa, including caligid copepods (e.g. sea louse). We recently described and characterised glands associated with the feeding appendages of A. foliaceus using histological techniques. The work described in the present study is the first undertaken with the objective of identifying and partially characterising the components secreted from these glands using a proteomic approach. METHODS Argulus foliaceus parasites were sampled from the skin of rainbow trout (Oncorhynchus mykiss), from Loch Fad on the Isle of Bute, Scotland, UK. The proteins from A. foliaceus secretory/excretory products (SEPs) were collected from the supernatant of artificial freshwater conditioned with active adult parasites (n = 5-9 per ml; n = 560 total). Proteins within the SEPs were identified and characterised using LC-ESI-MS/MS analysis. Data are available via ProteomeXchange with identifier PXD016226. RESULTS Data mining of a protein database translated from an A. foliaceus dataset using ProteinScape allowed identification of 27 predicted protein sequences from the A. foliaceus SEPs, each protein matching the criteria of 2 peptides with at least 4 contiguous amino acids. Nine proteins had no matching sequence through OmicsBox (Blast2GO) analysis searches suggesting that Argulus spp. may additionally have unique proteins present in their SEPs. SignalP 5.0 software, identified 13 proteins with a signal sequence suggestive of signal peptides and supportive of secreted proteins being identified. Notably, the functional characteristics of identified A. foliaceus proteins/domains have also been described from the salivary glands and saliva of other blood-feeding arthropods such as ticks. Identified proteins included: transporters, peroxidases, metalloproteases, proteases and serine protease inhibitors which are known to play roles in parasite immune evasion/induction (e.g. astacin), immunomodulation (e.g. serpin) and digestion (e.g. trypsin). CONCLUSIONS To our knowledge, the present study represents the first proteomic analysis undertaken for SEPs from any branchiuran fish louse. Here we reveal possible functional roles of A. foliaceus SEPs in digestion and immunomodulation, with a number of protein families shared with other haematophagous ectoparasites. A number of apparently unique secreted proteins were identified compared to other haematophagous ecdysozoa.
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Affiliation(s)
- Aisha AmbuAli
- Institute of Aquaculture, School of Natural Sciences, University of Stirling, Stirling, FK9 4LA UK
- Department of Marine Science and Fisheries, College of Agricultural and Marine Sciences, Sultan Qaboos University, PO Box 34, 123 Al-Khoud, Sultanate of Oman
| | - Sean J. Monaghan
- Institute of Aquaculture, School of Natural Sciences, University of Stirling, Stirling, FK9 4LA UK
| | - Kevin McLean
- Moredun Proteomics Facility, Moredun Research Institute, Pentland Science Park, Bush Loan, Penicuik, Midlothian, EH26 0PZ UK
| | - Neil F. Inglis
- Moredun Proteomics Facility, Moredun Research Institute, Pentland Science Park, Bush Loan, Penicuik, Midlothian, EH26 0PZ UK
| | - Michaël Bekaert
- Institute of Aquaculture, School of Natural Sciences, University of Stirling, Stirling, FK9 4LA UK
| | - Stefanie Wehner
- Institute of Aquaculture, School of Natural Sciences, University of Stirling, Stirling, FK9 4LA UK
- Max Planck Institute of Psychiatry, Kraepelinstr. 2-10, 80804 Munich, Germany
| | - James E. Bron
- Institute of Aquaculture, School of Natural Sciences, University of Stirling, Stirling, FK9 4LA UK
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28
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Martins LA, Kotál J, Bensaoud C, Chmelař J, Kotsyfakis M. Small protease inhibitors in tick saliva and salivary glands and their role in tick-host-pathogen interactions. BIOCHIMICA ET BIOPHYSICA ACTA-PROTEINS AND PROTEOMICS 2020; 1868:140336. [DOI: 10.1016/j.bbapap.2019.140336] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/03/2019] [Revised: 12/04/2019] [Accepted: 12/05/2019] [Indexed: 12/22/2022]
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29
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Moré DD, Cardoso FF, Mudadu MA, Malagó-Jr W, Gulias-Gomes CC, Sollero BP, Ibelli AMG, Coutinho LL, Regitano LCA. Network analysis uncovers putative genes affecting resistance to tick infestation in Braford cattle skin. BMC Genomics 2019; 20:998. [PMID: 31856720 PMCID: PMC6923859 DOI: 10.1186/s12864-019-6360-3] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2018] [Accepted: 12/01/2019] [Indexed: 12/13/2022] Open
Abstract
Background Genetic resistance in cattle is considered a suitable way to control tick burden and its consequent losses for livestock production. Exploring tick-resistant (R) and tick-susceptible (S) hosts, we investigated the genetic mechanisms underlying the variation of Braford resistance to tick infestation. Skin biopsies from four-times-artificially infested R (n = 20) and S (n = 19) hosts, obtained before the first and 24 h after the fourth tick infestation were submitted to RNA-Sequencing. Differential gene expression, functional enrichment, and network analysis were performed to identify genetic pathways and transcription factors (TFs) affecting host resistance. Results Intergroup comparisons of hosts before (Rpre vs. Spre) and after (Rpost vs. Spost) tick infestation found 51 differentially expressed genes (DEGs), of which almost all presented high variation (TopDEGs), and 38 were redundant genes. Gene expression was consistently different between R and S hosts, suggesting the existence of specific anti-tick mechanisms. In the intragroup comparisons, Rpost vs. Rpre and Spost vs. Spre, we found more than two thousand DEGs in response to tick infestation in both resistance groups. Redundant and non-redundant TopDEGs with potential anti-tick functions suggested a role in the development of different levels of resistance within the same breed. Leukocyte chemotaxis was over-represented in both hosts, whereas skin degradation and remodeling were only found in TopDEGs from R hosts. Also, these genes indicated the participation of cytokines, such as IL6 and IL22, and the activation of Wingless (WNT)-signaling pathway. A central gene of this pathway, WNT7A, was consistently modulated when hosts were compared. Moreover, the findings based on a genome-wide association study (GWAS) corroborate the prediction of the WNT-signaling pathway as a candidate mechanism of resistance. The regulation of immune response was the most relevant pathway predicted for S hosts. Members of Ap1 and NF-kB families were the most relevant TFs predicted for R and S, respectively. Conclusion This work provides indications of genetic mechanisms presented by Braford cattle with different levels of resistance in response to tick infestation, contributing to the search of candidate genes for tick resistance in bovine.
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Affiliation(s)
| | - Fernando F Cardoso
- EMBRAPA Pecuária Sul, Bagé, Rio Grande do Sul, Brazil.,Federal University of Pelotas, Capão do Leão, Rio Grande do Sul, Brazil
| | | | | | | | | | | | - Luiz L Coutinho
- Luiz de Queiroz College of Agriculture, University of São Paulo, Piracicaba, São Paulo, Brazil
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30
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Bakshi M, Kim TK, Porter L, Mwangi W, Mulenga A. Amblyomma americanum ticks utilizes countervailing pro and anti-inflammatory proteins to evade host defense. PLoS Pathog 2019; 15:e1008128. [PMID: 31756216 PMCID: PMC6897422 DOI: 10.1371/journal.ppat.1008128] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2019] [Revised: 12/06/2019] [Accepted: 10/05/2019] [Indexed: 02/07/2023] Open
Abstract
Feeding and transmission of tick-borne disease (TBD) agents by ticks are facilitated by tick saliva proteins (TSP). Thus, defining functional roles of TSPs in tick evasion is expected to reveal potential targets in tick-antigen based vaccines to prevent TBD infections. This study describes two types of Amblyomma americanum TSPs: those that are similar to LPS activate macrophage (MΦ) to express pro-inflammation (PI) markers and another set that suppresses PI marker expression by activated MΦ. We show that similar to LPS, three recombinant (r) A. americanum insulin-like growth factor binding-related proteins (rAamIGFBP-rP1, rAamIGFBP-rP6S, and rAamIGFBP-rP6L), hereafter designated as PI-rTSPs, stimulated both PBMC -derived MΦ and mice RAW 267.4 MΦ to express PI co-stimulatory markers, CD40, CD80, and CD86 and cytokines, TNFα, IL-1, and IL-6. In contrast, two A. americanum tick saliva serine protease inhibitors (serpins), AAS27 and AAS41, hereafter designated as anti-inflammatory (AI) rTSPs, on their own did not affect MΦ function or suppress expression of PI markers, but enhanced expression of AI cytokines (IL-10 and TGFβ) in MΦ that were pre-activated by LPS or PI-rTSPs. Mice paw edema test demonstrated that in vitro validated PI- and AI-rTSPs are functional in vivo since injection of HEK293-expressed PI-rTSPs (individually or as a cocktail) induced edema comparable to carrageenan-induced edema and was characterized by upregulation of CD40, CD80, CD86, TNF-α, IL-1, IL-6, and chemokines: CXCL1, CCL2, CCL3, CCL5, and CCL11, whereas the AI-rTSPs (individually and cocktail) were suppressive. We propose that the tick may utilize countervailing PI and AI TSPs to regulate evasion of host immune defenses whereby TSPs such as rAamIGFBP-rPs activate host immune cells and proteins such as AAS27 and AAS41 suppress the activated immune cells. Several studies have documented immuno-suppressive activities in whole tick saliva and salivary gland protein extracts. We have made contribution toward understanding the molecular basis of tick feeding, as we have described functions of defined tick saliva immuno-modulatory proteins. We have shown that A. americanum injects two groups of functionally opposed tick saliva proteins: those that could counter-intuitively be characterized as pro-host defense, and those that are expected to have anti-host immune defense functions. Based on our data, we propose that the tick evades host defense using countervailing pro- and anti- inflammatory proteins in which the pro-host defense tick saliva proteins stimulate host immune cells such as macrophages, and the anti-host defense tick saliva proteins suppress functions of the activated immune cells.
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Affiliation(s)
- Mariam Bakshi
- Department of Veterinary Pathobiology, College of Veterinary Medicine, TAMU, College Station, Texas, United States of America
| | - Tae Kwon Kim
- Department of Veterinary Pathobiology, College of Veterinary Medicine, TAMU, College Station, Texas, United States of America
| | - Lindsay Porter
- Department of Veterinary Pathobiology, College of Veterinary Medicine, TAMU, College Station, Texas, United States of America
| | - Waithaka Mwangi
- Department of Veterinary Pathobiology, College of Veterinary Medicine, TAMU, College Station, Texas, United States of America
- Department of Diagnostic Medicine/Pathobiology, College of Veterinary Medicine, Kansas State University, Manhattan, Kansas, United States of America
| | - Albert Mulenga
- Department of Veterinary Pathobiology, College of Veterinary Medicine, TAMU, College Station, Texas, United States of America
- * E-mail:
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Bensaoud C, Hackenberg M, Kotsyfakis M. Noncoding RNAs in Parasite–Vector–Host Interactions. Trends Parasitol 2019; 35:715-724. [DOI: 10.1016/j.pt.2019.06.012] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2019] [Revised: 06/24/2019] [Accepted: 06/24/2019] [Indexed: 12/18/2022]
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Bensaoud C, Aounallah H, Sciani JM, Faria F, Chudzinski-Tavassi AM, Bouattour A, M'ghirbi Y. Proteomic informed by transcriptomic for salivary glands components of the camel tick Hyalomma dromedarii. BMC Genomics 2019; 20:675. [PMID: 31455241 PMCID: PMC6712667 DOI: 10.1186/s12864-019-6042-1] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2019] [Accepted: 08/19/2019] [Indexed: 12/30/2022] Open
Abstract
Background The hard tick Hyalomma dromedarii is one of the most injurious ectoparasites affecting camels and apparently best adapted to deserts. As long-term blood feeders, ticks are threatened by host defense system compounds that can cause them to be rejected and, ultimately, to die. However, their saliva contains a cocktail of bioactive molecules that enables them to succeed in taking their blood meal. A recent sialotranscriptomic study uncovered the complexity of the salivary composition of the tick H. dromedarii and provided a database for a proteomic analysis. We carried out a proteomic-informed by transcriptomic (PIT) to identify proteins in salivary glands of both genders of this tick species. Results We reported the array of 1111 proteins identified in the salivary glands of H. dromedarii ticks. Only 24% of the proteins were shared by both genders, and concur with the previously described sialotranscriptome complexity. The comparative analysis of the salivary glands of both genders did not reveal any great differences in the number or class of proteins expressed their enzymatic composition or functional classification. Indeed, few proteins in the entire proteome matched those predicted from the transcriptome while others corresponded to other proteins of other tick species. Conclusion This investigation represents the first proteomic study of H. dromedarii salivary glands. Our results shed light on the differences between the composition of H. dromedarii male and female salivary glands, thus enabling us to better understand the gender-specific strategy to feed successfully. Electronic supplementary material The online version of this article (10.1186/s12864-019-6042-1) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Chaima Bensaoud
- Université de Tunis El Manar, Institut Pasteur de Tunis, LR11IPT03, Service d'entomologie médicale, 1002, Tunis, Tunisie. .,Institute of Parasitology, Biology Centre, Czech Academy of Sciences, 37005, Ceske Budejovice (Budweis), Czechia.
| | - Hajer Aounallah
- Université de Tunis El Manar, Institut Pasteur de Tunis, LR11IPT03, Service d'entomologie médicale, 1002, Tunis, Tunisie
| | - Juliana Mozer Sciani
- Laboratório de Biologia Molecular, Instituto Butantan, Av. Vital Brazil, 1500, CEP, São Paulo, 05503-900, Brazil.,Laboratório Multidisciplinar de Pesquisa, Universidade São Francisco, Av. São Francisco de Assis, 218, CEP 12916-900, Bragança Paulista, São Paulo, Brazil
| | - Fernanda Faria
- Laboratório de Biologia Molecular, Instituto Butantan, Av. Vital Brazil, 1500, CEP, São Paulo, 05503-900, Brazil
| | | | - Ali Bouattour
- Université de Tunis El Manar, Institut Pasteur de Tunis, LR11IPT03, Service d'entomologie médicale, 1002, Tunis, Tunisie
| | - Youmna M'ghirbi
- Université de Tunis El Manar, Institut Pasteur de Tunis, LR11IPT03, Service d'entomologie médicale, 1002, Tunis, Tunisie
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Štibrániová I, Bartíková P, Holíková V, Kazimírová M. Deciphering Biological Processes at the Tick-Host Interface Opens New Strategies for Treatment of Human Diseases. Front Physiol 2019; 10:830. [PMID: 31333488 PMCID: PMC6617849 DOI: 10.3389/fphys.2019.00830] [Citation(s) in RCA: 23] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2019] [Accepted: 06/17/2019] [Indexed: 12/14/2022] Open
Abstract
Ticks are obligatory blood-feeding ectoparasites, causing blood loss and skin damage in their hosts. In addition, ticks also transmit a number of various pathogenic microorganisms that cause serious diseases in humans and animals. Ticks evolved a wide array of salivary bioactive compounds that, upon injection into the host skin, inhibit or modulate host reactions such as hemostasis, inflammation and wound healing. Modulation of the tick attachment site in the host skin involves mainly molecules which affect physiological processes orchestrated by cytokines, chemokines and growth factors. Suppressing host defense reactions is crucial for tick survival and reproduction. Furthermore, pharmacologically active compounds in tick saliva have a promising therapeutic potential for treatment of some human diseases connected with disorders in hemostasis and immune system. These disorders are often associated to alterations in signaling pathways and dysregulation or overexpression of specific cytokines which, in turn, affect mechanisms of angiogenesis, cell motility and cytoskeletal regulation. Moreover, tick salivary molecules were found to exert cytotoxic and cytolytic effects on various tumor cells and have anti-angiogenic properties. Elucidation of the mode of action of tick bioactive molecules on the regulation of cell processes in their mammalian hosts could provide new tools for understanding the complex changes leading to immune disorders and cancer. Tick bioactive molecules may also be exploited as new pharmacological inhibitors of the signaling pathways of cytokines and thus help alleviate patient discomfort and increase patient survival. We review the current knowledge about tick salivary peptides and proteins that have been identified and functionally characterized in in vitro and/or in vivo models and their therapeutic perspective.
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Affiliation(s)
- Iveta Štibrániová
- Biomedical Research Center, Institute of Virology, Slovak Academy of Sciences, Bratislava, Slovakia
| | - Pavlína Bartíková
- Biomedical Research Center, Institute of Virology, Slovak Academy of Sciences, Bratislava, Slovakia
| | - Viera Holíková
- Biomedical Research Center, Institute of Virology, Slovak Academy of Sciences, Bratislava, Slovakia
| | - Mária Kazimírová
- Institute of Zoology, Slovak Academy of Sciences, Bratislava, Slovakia
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Chmelař J, Kotál J, Kovaříková A, Kotsyfakis M. The Use of Tick Salivary Proteins as Novel Therapeutics. Front Physiol 2019; 10:812. [PMID: 31297067 PMCID: PMC6607933 DOI: 10.3389/fphys.2019.00812] [Citation(s) in RCA: 28] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2019] [Accepted: 06/11/2019] [Indexed: 12/12/2022] Open
Abstract
The last three decades of research into tick salivary components have revealed several proteins with important pharmacological and immunological activities. Two primary interests have driven research into tick salivary secretions: the search for suitable pathogen transmission blocking or “anti-tick” vaccine candidates and the search for novel therapeutics derived from tick salivary components. Intensive basic research in the field of tick salivary gland transcriptomics and proteomics has identified several major protein families that play important roles in tick feeding and overcoming vertebrate anti-tick responses. Moreover, these families contain members with unrealized therapeutic potential. Here we review the major tick salivary protein families exploitable in medical applications such as immunomodulation, inhibition of hemostasis and inflammation. Moreover, we discuss the potential, opportunities, and challenges in searching for novel tick-derived drugs.
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Affiliation(s)
- Jindřich Chmelař
- Department of Medical Biology, Faculty of Science, University of South Bohemia in České Budějovice, České Budějovice, Czechia
| | - Jan Kotál
- Department of Medical Biology, Faculty of Science, University of South Bohemia in České Budějovice, České Budějovice, Czechia.,Laboratory of Genomics and Proteomics of Disease Vectors, Biology Centre CAS, Institute of Parasitology, České Budějovice, Czechia
| | - Anna Kovaříková
- Department of Medical Biology, Faculty of Science, University of South Bohemia in České Budějovice, České Budějovice, Czechia
| | - Michail Kotsyfakis
- Department of Medical Biology, Faculty of Science, University of South Bohemia in České Budějovice, České Budějovice, Czechia.,Laboratory of Genomics and Proteomics of Disease Vectors, Biology Centre CAS, Institute of Parasitology, České Budějovice, Czechia
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35
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Tick saliva and its role in pathogen transmission. Wien Klin Wochenschr 2019; 135:165-176. [PMID: 31062185 PMCID: PMC10118219 DOI: 10.1007/s00508-019-1500-y] [Citation(s) in RCA: 58] [Impact Index Per Article: 11.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2019] [Accepted: 04/09/2019] [Indexed: 12/31/2022]
Abstract
Tick saliva is a complex mixture of peptidic and non-peptidic molecules that aid engorgement. The composition of tick saliva changes as feeding progresses and the tick counters the dynamic host response. Ixodid ticks such as Ixodes ricinus, the most important tick species in Europe, transmit numerous pathogens that cause debilitating diseases, e.g. Lyme borreliosis and tick-borne encephalitis. Tick-borne pathogens are transmitted in tick saliva during blood feeding; however, saliva is not simply a medium enabling pathogen transfer. Instead, tick-borne pathogens exploit saliva-induced modulation of host responses to promote their transmission and infection, so-called saliva-assisted transmission (SAT). Characterization of the saliva factors that facilitate SAT is an active area of current research. Besides providing new insights into how tick-borne pathogens survive in nature, the research is opening new avenues for vaccine development.
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36
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37
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Dissociating effect of salivary gland extract from Ixodes ricinus on human fibroblasts: Potential impact on Borrelia transmission. Ticks Tick Borne Dis 2018; 10:433-441. [PMID: 30595500 DOI: 10.1016/j.ttbdis.2018.12.005] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2018] [Revised: 12/19/2018] [Accepted: 12/21/2018] [Indexed: 12/22/2022]
Abstract
Understanding the mechanism of pathogen transmission is essential for the development of strategies to reduce arthropod-borne diseases. The pharmaco- and immunomodulatory properties of insect and acarine saliva play an essential role in the efficiency of pathogen transmission. The skin as the site where arthropod saliva and pathogens are inoculated - represents the key interface in vector-borne diseases. We identified tick molecules potentially involved in pathogen transmission, using micro-HPLC and mass spectrometry, followed by in vitro assays on human skin cells. Histone H4 isolated from Ixodes ricinus salivary gland extract was identified as a molecule with a dissociating effect on human primary fibroblasts. This histone might be involved in the formation of the feeding pool formed around the tick mouthparts and responsible of tissue necrosis in the vertebrate host. Thanks to its selective antimicrobial activity, it may also sterilize the feeding pool and facilitate transmission of pathogens such as Borrelia burgdorferi sensu lato.
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38
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Nuttall PA. Wonders of tick saliva. Ticks Tick Borne Dis 2018; 10:470-481. [PMID: 30459085 DOI: 10.1016/j.ttbdis.2018.11.005] [Citation(s) in RCA: 63] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2018] [Revised: 10/31/2018] [Accepted: 11/09/2018] [Indexed: 12/16/2022]
Abstract
Saliva of ticks is arguably the most complex saliva of any animal. This is particularly the case for ixodid species that feed for many days firmly attached to the same skin site of their obliging host. Sequencing and spectrometry technologies combined with bioinformatics are enumerating ingredients in the saliva cocktail. The dynamic and expanding saliva recipe is helping decipher the wonderous activities of tick saliva, revealing how ticks stealthily hide from their hosts while satisfying their gluttony and sharing their individual resources. This review takes a tick perspective on the composition and functions of tick saliva, covering water balance, gasket and holdfast, control of host responses, dynamics, individuality, mate guarding, saliva-assisted transmission, and redundancy. It highlights areas sometimes overlooked - feeding aggregation and sharing of sialomes, and the contribution of salivary gland storage granules - and questions whether the huge diversity of tick saliva molecules is 'redundant' or more a reflection on the enormous adaptability wonderous saliva confers on ticks.
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Affiliation(s)
- Patricia A Nuttall
- Department of Zoology, University of Oxford, UK and Centre for Ecology & Hydrology, Wallingford, Oxfordshire, UK.
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39
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Ixodid tick salivary gland extracts suppress human transforming growth factor-β1 triggered signalling pathways in cervical carcinoma cells. Biologia (Bratisl) 2018. [DOI: 10.2478/s11756-018-0129-z] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
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40
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Sajid M, Kausar A, Iqbal A, Abbas H, Iqbal Z, Jones M. An insight into the ecobiology, vector significance and control of Hyalomma ticks (Acari: Ixodidae): A review. Acta Trop 2018; 187:229-239. [PMID: 30118698 DOI: 10.1016/j.actatropica.2018.08.016] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2018] [Revised: 08/10/2018] [Accepted: 08/12/2018] [Indexed: 12/28/2022]
Abstract
Ticks (Acari:Ixodoidea) are important ectoparasites infesting livestock and human populations around the globe. Ticks can cause damage directly by affecting the site of infestation, or indirectly as vectors of a wide range of protozoa, bacteria and viruses which ultimately lead to lowered productivity of livestock populations. Hyalomma is a genus of hard ticks, having more than 30 species well-adapted to hot, humid and cold climates. Habitat diversity, vector ability, and emerging problem of acaricidal resistance in enzootic regions typify this genus in various countries around the world. This paper reviews the epidemiology, associated risk factors (temperature, climate, age, sex, breed etc.), vector role, vector-pathogen association, and reported control strategies of genus Hyalomma. The various proteins in saliva of Hyalomma secreted into the blood stream of host and the prolonged attachment are responsible for the successful engorgement of female ticks in spite of host immune defense system. The various immunological approaches that have been tried by researchers in order to cause tick rejection are also discussed. In addition, the novel biological control approaches involving the use of entomo-pathogenic nematodes and Bacillus thuringiensis (B. thuringiensis) serovar thuringiensis H14; an endotoxin, for their acaricidal effect on different species and life cycle stages of Hyalomma are also presented.
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41
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Parizi LF, Ali A, Tirloni L, Oldiges DP, Sabadin GA, Coutinho ML, Seixas A, Logullo C, Termignoni C, DA Silva Vaz I. Peptidase inhibitors in tick physiology. MEDICAL AND VETERINARY ENTOMOLOGY 2018; 32:129-144. [PMID: 29111611 DOI: 10.1111/mve.12276] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/19/2016] [Revised: 06/23/2017] [Accepted: 10/07/2017] [Indexed: 06/07/2023]
Abstract
Peptidase inhibitors regulate a wide range of physiological processes involved in the interaction between hematophagous parasites and their hosts, including tissue remodeling, the immune response and blood coagulation. In tick physiology, peptidase inhibitors have a crucial role in adaptation to improve parasitism mechanisms, facilitating blood feeding by interfering with defense-related host peptidases. Recently, a larger number of studies on this topic led to the description of several new tick inhibitors displaying interesting novel features, for example a role in pathogen transmission to the host. A comprehensive review discussing these emerging concepts can therefore shed light on peptidase inhibitor functions, their relevance to tick physiology and their potential applications. Here, we summarize and examine the general characteristics, functional diversity and action of tick peptidase inhibitors with known physiological roles in the tick-host-pathogen interaction.
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Affiliation(s)
- L F Parizi
- Centro de Biotecnologia, Universidade Federal do Rio Grande do Sul, Porto Alegre, RS, Brazil
- Faculdade de Veterinária, Universidade Federal do Rio Grande do Sul, Porto Alegre, RS, Brazil
| | - A Ali
- Department of Zoology, Abdul Wali Khan University, Mardan, Pakistan
- Escola de Enfermagem de Ribeirão Preto, Universidade de São Paulo, Ribeirão Preto, SP, Brazil
| | - L Tirloni
- Centro de Biotecnologia, Universidade Federal do Rio Grande do Sul, Porto Alegre, RS, Brazil
| | - D P Oldiges
- Centro de Biotecnologia, Universidade Federal do Rio Grande do Sul, Porto Alegre, RS, Brazil
| | - G A Sabadin
- Centro de Biotecnologia, Universidade Federal do Rio Grande do Sul, Porto Alegre, RS, Brazil
| | - M L Coutinho
- Centro de Biotecnologia, Universidade Federal do Rio Grande do Sul, Porto Alegre, RS, Brazil
- Faculdade de Veterinária, Universidade Federal do Rio Grande do Sul, Porto Alegre, RS, Brazil
| | - A Seixas
- Departamento de Farmacociências, Universidade Federal de Ciências da Saúde de Porto Alegre, RS, Brazil
- Instituto Nacional de Ciência e Tecnologia em Entomologia Molecular, Rio de Janeiro, RJ, Brazil
| | - C Logullo
- Laboratório de Química e Função de Proteínas e Peptídeos-CBB and Unidade de Experimentação Animal, Universidade Estadual do Norte Fluminense Darcy Ribeiro, Campos dos Goytacazes, RJ, Brazil
- Instituto Nacional de Ciência e Tecnologia em Entomologia Molecular, Rio de Janeiro, RJ, Brazil
| | - C Termignoni
- Centro de Biotecnologia, Universidade Federal do Rio Grande do Sul, Porto Alegre, RS, Brazil
- Departamento de Bioquímica, Universidade Federal do Rio Grande do Sul, Porto Alegre, Porto Alegre, Brazil
- Instituto Nacional de Ciência e Tecnologia em Entomologia Molecular, Rio de Janeiro, RJ, Brazil
| | - I DA Silva Vaz
- Centro de Biotecnologia, Universidade Federal do Rio Grande do Sul, Porto Alegre, RS, Brazil
- Faculdade de Veterinária, Universidade Federal do Rio Grande do Sul, Porto Alegre, RS, Brazil
- Instituto Nacional de Ciência e Tecnologia em Entomologia Molecular, Rio de Janeiro, RJ, Brazil
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Pienaar R, Neitz AWH, Mans BJ. Tick Paralysis: Solving an Enigma. Vet Sci 2018; 5:E53. [PMID: 29757990 PMCID: PMC6024606 DOI: 10.3390/vetsci5020053] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2018] [Revised: 05/04/2018] [Accepted: 05/09/2018] [Indexed: 11/17/2022] Open
Abstract
In comparison to other arachnids, ticks are major vectors of disease, but less than 8% of the known species are capable of inducing paralysis, as compared to the ~99⁻100% arachnids that belong to venomous classes. When considering the potential monophyly of venomous Arachnida, this review reflects on the implications regarding the classification of ticks as venomous animals and the possible origin of toxins. The origin of tick toxins is compared with scorpion and spider toxins and venoms based on their significance, functionality, and structure in the search to find homologous venomous characters. Phenotypic evaluation of paralysis, as caused by different ticks, demonstrated the need for expansion on existing molecular data of pure isolated tick toxins because of differences and discrepancies in available data. The use of in-vivo, in-vitro, and in-silico assays for the purification and characterization of paralysis toxins were critically considered, in view of what may be considered to be a paralysis toxin. Purified toxins should exhibit physiologically relevant activity to distinguish them from other tick-derived proteins. A reductionist approach to identify defined tick proteins will remain as paramount in the search for defined anti-paralysis vaccines.
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Affiliation(s)
- Ronel Pienaar
- Epidemiology, Parasites and Vectors, Agricultural Research Council⁻Onderstepoort Veterinary Research, Onderstepoort, Pretoria 0110, South Africa.
- Department of Veterinary Tropical Diseases, Faculty of Veterinary Science, University of Pretoria, Onderstepoort, Pretoria 0110, South Africa.
| | - Albert W H Neitz
- Division of Biochemistry, University of Pretoria, Hatfield, Pretoria 0028, South Africa.
| | - Ben J Mans
- Epidemiology, Parasites and Vectors, Agricultural Research Council⁻Onderstepoort Veterinary Research, Onderstepoort, Pretoria 0110, South Africa.
- Department of Veterinary Tropical Diseases, Faculty of Veterinary Science, University of Pretoria, Onderstepoort, Pretoria 0110, South Africa.
- Department of Life and Consumer Sciences, University of South Africa, Florida, Johannesburg 1710, South Africa.
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Rodriguez-Valle M, Moolhuijzen P, Barrero RA, Ong CT, Busch G, Karbanowicz T, Booth M, Clark R, Koehbach J, Ijaz H, Broady K, Agnew K, Knowles AG, Bellgard MI, Tabor AE. Transcriptome and toxin family analysis of the paralysis tick, Ixodes holocyclus. Int J Parasitol 2018; 48:71-82. [DOI: 10.1016/j.ijpara.2017.07.007] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2017] [Revised: 07/26/2017] [Accepted: 07/31/2017] [Indexed: 01/24/2023]
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44
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Esteves E, Maruyama SR, Kawahara R, Fujita A, Martins LA, Righi AA, Costa FB, Palmisano G, Labruna MB, Sá-Nunes A, Ribeiro JMC, Fogaça AC. Analysis of the Salivary Gland Transcriptome of Unfed and Partially Fed Amblyomma sculptum Ticks and Descriptive Proteome of the Saliva. Front Cell Infect Microbiol 2017; 7:476. [PMID: 29209593 PMCID: PMC5702332 DOI: 10.3389/fcimb.2017.00476] [Citation(s) in RCA: 55] [Impact Index Per Article: 7.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2017] [Accepted: 10/31/2017] [Indexed: 12/22/2022] Open
Abstract
Ticks are obligate blood feeding ectoparasites that transmit a wide variety of pathogenic microorganisms to their vertebrate hosts. Amblyomma sculptum is vector of Rickettsia rickettsii, the causative agent of Rocky Mountain spotted fever (RMSF), the most lethal rickettsiosis that affects humans. It is known that the transmission of pathogens by ticks is mainly associated with the physiology of the feeding process. Pathogens that are acquired with the blood meal must first colonize the tick gut and later the salivary glands (SG) in order to be transmitted during a subsequent blood feeding via saliva. Tick saliva contains a complex mixture of bioactive molecules with anticlotting, antiplatelet aggregation, vasodilatory, anti-inflammatory, and immunomodulatory properties to counteract both the hemostasis and defense mechanisms of the host. Besides facilitating tick feeding, the properties of saliva may also benefits survival and establishment of pathogens in the host. In the current study, we compared the sialotranscriptome of unfed A. sculptum ticks and those fed for 72 h on rabbits using next generation RNA sequencing (RNA-seq). The total of reads obtained were assembled in 9,560 coding sequences (CDSs) distributed in different functional classes. CDSs encoding secreted proteins, including lipocalins, mucins, protease inhibitors, glycine-rich proteins, metalloproteases, 8.9 kDa superfamily members, and immunity-related proteins were mostly upregulated by blood feeding. Selected CDSs were analyzed by real-time quantitative polymerase chain reaction preceded by reverse transcription (RT-qPCR), corroborating the transcriptional profile obtained by RNA-seq. Finally, high-performance liquid chromatography coupled with tandem mass spectrometry (LC-MS/MS) analysis revealed 124 proteins in saliva of ticks fed for 96–120 h. The corresponding CDSs of 59 of these proteins were upregulated in SG of fed ticks. To the best of our knowledge, this is the first report on the proteome of A. sculptum saliva. The functional characterization of the identified proteins might reveal potential targets to develop vaccines for tick control and/or blocking of R. rickettsii transmission as well as pharmacological bioproducts with antihemostatic, anti-inflammatory and antibacterial activities.
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Affiliation(s)
- Eliane Esteves
- Departamento de Imunologia, Instituto de Ciências Biomédicas, Universidade de São Paulo, São Paulo, Brazil
| | - Sandra R Maruyama
- Departamento de Genética e Evolução, Universidade Federal de São Carlos, São Carlos, Brazil
| | - Rebeca Kawahara
- Departamento de Parasitologia, Instituto de Ciências Biomédicas, Universidade de São Paulo, São Paulo, Brazil
| | - André Fujita
- Departamento de Ciência da Computação, Instituto de Matemática e Estatística, Universidade de São Paulo, São Paulo, Brazil
| | - Larissa A Martins
- Departamento de Parasitologia, Instituto de Ciências Biomédicas, Universidade de São Paulo, São Paulo, Brazil
| | - Adne A Righi
- Departamento de Parasitologia, Instituto de Ciências Biomédicas, Universidade de São Paulo, São Paulo, Brazil
| | - Francisco B Costa
- Departamento de Medicina Veterinária Preventiva e Saúde Animal, Faculdade de Medicina Veterinária e Zootecnia, Universidade de São Paulo, São Paulo, Brazil
| | - Giuseppe Palmisano
- Departamento de Parasitologia, Instituto de Ciências Biomédicas, Universidade de São Paulo, São Paulo, Brazil
| | - Marcelo B Labruna
- Departamento de Medicina Veterinária Preventiva e Saúde Animal, Faculdade de Medicina Veterinária e Zootecnia, Universidade de São Paulo, São Paulo, Brazil
| | - Anderson Sá-Nunes
- Departamento de Imunologia, Instituto de Ciências Biomédicas, Universidade de São Paulo, São Paulo, Brazil
| | - José M C Ribeiro
- Laboratory of Malaria and Vector Research, National Institute of Allergy and Infectious Diseases, Bethesda, MD, United States
| | - Andréa C Fogaça
- Departamento de Parasitologia, Instituto de Ciências Biomédicas, Universidade de São Paulo, São Paulo, Brazil
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45
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Patel S. A critical review on serine protease: Key immune manipulator and pathology mediator. Allergol Immunopathol (Madr) 2017; 45:579-591. [PMID: 28236540 PMCID: PMC7126602 DOI: 10.1016/j.aller.2016.10.011] [Citation(s) in RCA: 65] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2016] [Accepted: 10/31/2016] [Indexed: 11/29/2022]
Abstract
Proteolytic activity is fundamental to survival, so it is not surprising that all living organisms have proteases, especially seine protease. This enzyme in its numerous isoforms and homologues, constitutes the quintessential offence and defence factors, in the form of surface proteins, secreted molecules, gut digestive enzymes, venom in specialised glands or plant latex, among other manifestations. Occurring as trypsin, chymotrypsin, elastase, collagenase, thrombin, subtilisin etc., it mediates a diverse array of functions, including pathological roles as inflammatory, coagulatory to haemorrhagic. This review emphasizes that despite the superficial differences in mechanisms, most health issues, be they infectious, allergic, metabolic, or neural have a common conduit. This enzyme, in its various glycosylated forms leads to signal misinterpretations, wreaking havoc. However, organisms are endowed with serine protease inhibitors which might restrain this ubiquitous yet deleterious enzyme. Hence, serine proteases-driven pathogenesis and antagonising role of inhibitors is the focal point of this critical review.
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46
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Šimo L, Kazimirova M, Richardson J, Bonnet SI. The Essential Role of Tick Salivary Glands and Saliva in Tick Feeding and Pathogen Transmission. Front Cell Infect Microbiol 2017; 7:281. [PMID: 28690983 PMCID: PMC5479950 DOI: 10.3389/fcimb.2017.00281] [Citation(s) in RCA: 182] [Impact Index Per Article: 26.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2017] [Accepted: 06/08/2017] [Indexed: 12/30/2022] Open
Abstract
As long-term pool feeders, ticks have developed myriad strategies to remain discreetly but solidly attached to their hosts for the duration of their blood meal. The critical biological material that dampens host defenses and facilitates the flow of blood-thus assuring adequate feeding-is tick saliva. Saliva exhibits cytolytic, vasodilator, anticoagulant, anti-inflammatory, and immunosuppressive activity. This essential fluid is secreted by the salivary glands, which also mediate several other biological functions, including secretion of cement and hygroscopic components, as well as the watery component of blood as regards hard ticks. When salivary glands are invaded by tick-borne pathogens, pathogens may be transmitted via saliva, which is injected alternately with blood uptake during the tick bite. Both salivary glands and saliva thus play a key role in transmission of pathogenic microorganisms to vertebrate hosts. During their long co-evolution with ticks and vertebrate hosts, microorganisms have indeed developed various strategies to exploit tick salivary molecules to ensure both acquisition by ticks and transmission, local infection and systemic dissemination within the vertebrate host.
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Affiliation(s)
- Ladislav Šimo
- UMR BIPAR, INRA, Ecole Nationale Vétérinaire d'Alfort, ANSES, Université Paris-EstMaisons-Alfort, France
| | - Maria Kazimirova
- Institute of Zoology, Slovak Academy of SciencesBratislava, Slovakia
| | - Jennifer Richardson
- UMR Virologie, INRA, Ecole Nationale Vétérinaire d'Alfort, ANSES, Université Paris-EstMaisons-Alfort, France
| | - Sarah I. Bonnet
- UMR BIPAR, INRA, Ecole Nationale Vétérinaire d'Alfort, ANSES, Université Paris-EstMaisons-Alfort, France
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47
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Chmelař J, Kotál J, Langhansová H, Kotsyfakis M. Protease Inhibitors in Tick Saliva: The Role of Serpins and Cystatins in Tick-host-Pathogen Interaction. Front Cell Infect Microbiol 2017; 7:216. [PMID: 28611951 PMCID: PMC5447049 DOI: 10.3389/fcimb.2017.00216] [Citation(s) in RCA: 71] [Impact Index Per Article: 10.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2017] [Accepted: 05/11/2017] [Indexed: 11/23/2022] Open
Abstract
The publication of the first tick sialome (salivary gland transcriptome) heralded a new era of research of tick protease inhibitors, which represent important constituents of the proteins secreted via tick saliva into the host. Three major groups of protease inhibitors are secreted into saliva: Kunitz inhibitors, serpins, and cystatins. Kunitz inhibitors are anti-hemostatic agents and tens of proteins with one or more Kunitz domains are known to block host coagulation and/or platelet aggregation. Serpins and cystatins are also anti-hemostatic effectors, but intriguingly, from the translational perspective, also act as pluripotent modulators of the host immune system. Here we focus especially on this latter aspect of protease inhibition by ticks and describe the current knowledge and data on secreted salivary serpins and cystatins and their role in tick-host-pathogen interaction triad. We also discuss the potential therapeutic use of tick protease inhibitors.
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Affiliation(s)
- Jindřich Chmelař
- Faculty of Science, University of South Bohemia in České BudějoviceČeské Budějovice, Czechia
| | - Jan Kotál
- Faculty of Science, University of South Bohemia in České BudějoviceČeské Budějovice, Czechia.,Institute of Parasitology, Biology Center, Czech Academy of SciencesČeské Budějovice, Czechia
| | - Helena Langhansová
- Faculty of Science, University of South Bohemia in České BudějoviceČeské Budějovice, Czechia.,Institute of Parasitology, Biology Center, Czech Academy of SciencesČeské Budějovice, Czechia
| | - Michail Kotsyfakis
- Institute of Parasitology, Biology Center, Czech Academy of SciencesČeské Budějovice, Czechia
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48
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Santiago PB, de Araújo CN, Motta FN, Praça YR, Charneau S, Bastos IMD, Santana JM. Proteases of haematophagous arthropod vectors are involved in blood-feeding, yolk formation and immunity - a review. Parasit Vectors 2017; 10:79. [PMID: 28193252 PMCID: PMC5307778 DOI: 10.1186/s13071-017-2005-z] [Citation(s) in RCA: 36] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2016] [Accepted: 01/27/2017] [Indexed: 11/10/2022] Open
Abstract
Ticks, triatomines, mosquitoes and sand flies comprise a large number of haematophagous arthropods considered vectors of human infectious diseases. While consuming blood to obtain the nutrients necessary to carry on life functions, these insects can transmit pathogenic microorganisms to the vertebrate host. Among the molecules related to the blood-feeding habit, proteases play an essential role. In this review, we provide a panorama of proteases from arthropod vectors involved in haematophagy, in digestion, in egg development and in immunity. As these molecules act in central biological processes, proteases from haematophagous vectors of infectious diseases may influence vector competence to transmit pathogens to their prey, and thus could be valuable targets for vectorial control.
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Affiliation(s)
- Paula Beatriz Santiago
- Laboratório de Interação Patógeno-Hospedeiro, Departamento de Biologia Celular, Instituto de Ciências Biológicas, Universidade de Brasília, Campus Universitário Darcy Ribeiro, Asa Norte, 70910-900, Brasília, DF, Brazil
| | - Carla Nunes de Araújo
- Laboratório de Interação Patógeno-Hospedeiro, Departamento de Biologia Celular, Instituto de Ciências Biológicas, Universidade de Brasília, Campus Universitário Darcy Ribeiro, Asa Norte, 70910-900, Brasília, DF, Brazil.,Faculdade de Ceilândia, Universidade de Brasília, Centro Metropolitano, Conjunto A, Lote 01, 72220-275, Brasília, DF, Brazil
| | - Flávia Nader Motta
- Laboratório de Interação Patógeno-Hospedeiro, Departamento de Biologia Celular, Instituto de Ciências Biológicas, Universidade de Brasília, Campus Universitário Darcy Ribeiro, Asa Norte, 70910-900, Brasília, DF, Brazil.,Faculdade de Ceilândia, Universidade de Brasília, Centro Metropolitano, Conjunto A, Lote 01, 72220-275, Brasília, DF, Brazil
| | - Yanna Reis Praça
- Laboratório de Interação Patógeno-Hospedeiro, Departamento de Biologia Celular, Instituto de Ciências Biológicas, Universidade de Brasília, Campus Universitário Darcy Ribeiro, Asa Norte, 70910-900, Brasília, DF, Brazil.,Programa Pós-Graduação em Ciências Médicas, Faculdade de Medicina, Universidade de Brasília, Campus Universitário Darcy Ribeiro, Asa Norte, 70910-900, Brasília, DF, Brazil
| | - Sébastien Charneau
- Laboratório de Bioquímica e Química de Proteínas, Departamento de Biologia Celular, Instituto de Ciências Biológicas, Universidade de Brasília, Campus Universitário Darcy Ribeiro, Asa Norte, 70910-900, Brasília, DF, Brazil
| | - Izabela M Dourado Bastos
- Laboratório de Interação Patógeno-Hospedeiro, Departamento de Biologia Celular, Instituto de Ciências Biológicas, Universidade de Brasília, Campus Universitário Darcy Ribeiro, Asa Norte, 70910-900, Brasília, DF, Brazil
| | - Jaime M Santana
- Laboratório de Interação Patógeno-Hospedeiro, Departamento de Biologia Celular, Instituto de Ciências Biológicas, Universidade de Brasília, Campus Universitário Darcy Ribeiro, Asa Norte, 70910-900, Brasília, DF, Brazil.
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49
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Sheng X, Gao L, Lu X, Wang Y, Han Y, Meng P, Chen W, Lu Q. Expression and characterization of a fibrinogenolytic enzyme from horsefly salivary gland. Protein Expr Purif 2017; 129:135-142. [DOI: 10.1016/j.pep.2016.04.014] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2016] [Revised: 04/25/2016] [Accepted: 04/28/2016] [Indexed: 11/16/2022]
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50
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Ribeiro JMC, Slovák M, Francischetti IMB. An insight into the sialome of Hyalomma excavatum. Ticks Tick Borne Dis 2016; 8:201-207. [PMID: 28049606 DOI: 10.1016/j.ttbdis.2016.08.011] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2016] [Revised: 08/23/2016] [Accepted: 08/24/2016] [Indexed: 01/13/2023]
Abstract
Tick saliva contains hundreds or thousands of proteins that help blood feeding by impairing their hosts' hemostasis, inflammation and immunity. Salivary gland transcriptomes allow the disclosure of this pharmacologically active potion that consists of several multi-gene families, many of which are tick-specific. We here report the "de novo" assembly of ∼138 million reads deriving from a cDNA library from salivary glands of adult male and female Hyalomma excavatum leading to the public deposition of 5337 coding sequences to GenBank. Among the deducted putative secreted proteins, metalloproteases, glycine rich proteins, mucins, anticoagulants of the madanin family and lipocalins were the most expressed. Novel protein families were identified. These sequences will permit proteomic studies aiming at identification of target antigens, epidemiological markers or salivary pharmaceuticals of interest, and contribute to our understanding of the fast evolution of the tick sialome.
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Affiliation(s)
- José M C Ribeiro
- Laboratory of Malaria and Vector Research, National Institute of Allergy and Infectious Diseases, Bethesda MD 20852, USA.
| | - Mirko Slovák
- Institute of Zoology, Slovak Academy of Sciences, Dúbravská cesta 9, 84506, Bratislava, Slovakia.
| | - Ivo M B Francischetti
- Laboratory of Malaria and Vector Research, National Institute of Allergy and Infectious Diseases, Bethesda MD 20852, USA.
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