Glucose metabolomic profile during embryogenesis in the tick Rhipicephalus microplus

Silva, Jhenifer Nascimento da; Simas, Daniel Luiz Reis; Soares, Angélica Ribeiro; Duarte, Heitor Monteiro; Moraes, João Antônio de; Conceição, Christiano Calixto; Silva, Renato Martins da; Vaz, Itabajara da Silva; Logullo, Carlos

doi:10.1007/s11306-021-01830-2

Cited by 3 publications

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“…Glucose metabolism plays an essential role in the physiology and development of hard ticks, especially during embryogenesis. 49 Reproduction is energetically challenging for pregnant females, because egg development and other processes associated with reproduction require large amounts of energy. [50][51][52] HK is a rate-limiting enzyme in the glycolytic cycle and is involved in nutrient accumulation and growth regulation.…”

Section: Discussionmentioning

confidence: 99%

“…These results suggest that parasite body weight is closely related to HK activity. Glucose metabolism plays an essential role in the physiology and development of hard ticks, especially during embryogenesis 49 . Reproduction is energetically challenging for pregnant females, because egg development and other processes associated with reproduction require large amounts of energy 50–52 .…”

Section: Discussionmentioning

confidence: 99%

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Molecular characterization of hexokinase (HK) in Haemaphysalis longicornis and evaluation of HK protein‐ and DNA‐based vaccines against adult ticks

Wang

et al. 2023

Pest Management Science

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Background Haemaphysalis longicornis is an obligate hematophagous ectoparasite, which transmits various pathogens to humans, livestock and wild animals. Hexokinase (HK) is a key regulatory enzyme of the glycolytic pathway in the organisms. However, little is known about hexokinase and its functions in ticks. Results The open reading frame of the H. longicornis HK (HlHK) gene was 1425 bp and encoded a protein of 474 amino acids, containing conserved domains for glucose, glucose 6‐phosphate, and adenosine triphosphate. The expression of HlHK gene was detected at different developmental stages and in different tissues of unfed female ticks. Enzyme‐linked immunosorbent assay revealed that both HK protein‐ and DNA‐based vaccines increased the antibody levels of the immunized animals. A vaccination trail on rabbits against H. longicornis infestation indicated that the rHlHK protein and HlHK DNA vaccines reduced the number of attached female ticks by 9% and 12%, egg mass weight by 36% and 34%, and egg hatching rate by 41% and 17%, respectively. Overall, protein vaccination conferred 65.6% protection against adult female ticks, whereas the DNA vaccine conferred 51.8% protection. Conclusion This is the first report of the molecular characterization of the HK protein and sequencing of the HK gene from H. longicornis. Positive results from vaccination trials on rabbits of the recombinant HK protein and HK DNA suggest that these novel anti‐tick vaccines potentially can be used as viable tick control tools for the management of the Asian longhorned tick. Additionally, inhibition of glucose metabolism may be a new strategy for tick control. © 2023 Society of Chemical Industry.

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