title: Expression of intracellular calcium signalling genes in cattle skin during tick infestation.
abstract: It is widely acknowledged that changes in intracellular calcium ion (Ca(2+)) concentration provide dynamic signals that control a plethora of cellular processes, including triggering and mediating host defence mechanisms. In this study, quantitative real-time PCR was used to analyse gene expression of 14 Ca(2+) signalling proteins in skin obtained from high tick-resistant (HR) and low tick-resistant (LR) cattle following artificial challenge with cattle tick (Rhipicephalus (Boophilus) microplus). Up-regulation of numerous genes was observed in both HR and LR skin following tick challenge, however substantially higher transcription activation was found in HR tissue. The elevated expression in HR skin of specific Ca(2+) signalling genes such as AHNAK, CASQ, IL2, NFAT2CIP and PLCG1 may be related to host resistance. Our data suggest that Ca(2+) and its associated proteins might play an important role in host response to ticks and that further investigation is warranted.
authors.affiliation: CSIRO Livestock Industries, Queensland Bioscience Precinct, St Lucia QLD, Australia.
authors.forename: N
authors.initials: N
authors.lastname: Bagnall
authors.forename: J
authors.initials: J
authors.lastname: Gough
authors.forename: L
authors.initials: L
authors.lastname: Cadogan
authors.forename: B
authors.initials: B
authors.lastname: Burns
authors.forename: K
authors.initials: K
authors.lastname: Kongsuwan
mesh_terms: D000818:Animals; D020013:Calcium Signaling / Q000235:genetics*; D002155:Calsequestrin / Q000096:biosynthesis / Q000235:genetics; D002417:Cattle; D002418:Cattle Diseases / Q000276:immunology / Q000378:metabolism* / Q000469:parasitology*; D005260:Female; D006790:Host-Parasite Interactions; D007113:Immunity, Innate; D007376:Interleukin-2 / Q000096:biosynthesis / Q000235:genetics; D047908:Intracellular Signaling Peptides and Proteins / Q000235:genetics / Q000378:metabolism; D050778:NFATC Transcription Factors / Q000096:biosynthesis / Q000235:genetics; D009363:Neoplasm Proteins / Q000096:biosynthesis / Q000235:genetics; D051966:Phospholipase C gamma / Q000096:biosynthesis / Q000235:genetics; D048494:Rhipicephalus / Q000502:physiology; D012867:Skin / Q000378:metabolism / Q000469:parasitology; D013984:Tick Infestations / Q000276:immunology / Q000378:metabolism / Q000662:veterinary*; D015854:Up-Regulation
chemical_list: D002155:Calsequestrin; D007376:Interleukin-2; D047908:Intracellular Signaling Peptides and Proteins; D050778:NFATC Transcription Factors; D009363:Neoplasm Proteins; D051966:Phospholipase C gamma