Dataset Information

A proteomic investigation of hepatic resistance to Ascaris in a murine model.

ABSTRACT: In 2010, Ascaris caused 819 million infections worldwide. The impact on children is particularly severe, causing growth retardation and detrimental effects on cognitive development. Transmission is linked to unhygienic defecation habits, making ascariasis a disease of poverty. The WHO recognises it as one of the world's 17 neglected tropical diseases. Ascariasis is also an important parasite of pigs with economic implications including liver condemnation. Intriguingly some people (and pigs) are very heavily infected with Ascaris whereas others are not and this research aims to understand the factors that give rise to this difference and ultimately resistance to Ascaris itself. In our study we performed label free quantitative proteomics on livers of day four post infection C57BL/6J and CBA/Ca mice with and without Ascaris infection to identify proteins changes potentially linked to both resistance and susceptibility amongst the two strains, respectively. In addition tio major intrinsic differences between the two strains signatures of a differential immune response and direct modulation of host processes by the nematode were resolved.

INSTRUMENT(S): Q Exactive

ORGANISM(S): Mus Musculus (mouse)

TISSUE(S): Liver

DISEASE(S): Ascariasis

SUBMITTER: James Carolan

LAB HEAD: James Carolan

PROVIDER: PXD003555 | Pride | 2016-08-08

REPOSITORIES: Pride

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A Proteomic Investigation of Hepatic Resistance to Ascaris in a Murine Model.

Deslyper Gwendoline G Colgan Thomas J TJ Cooper Andrew J R AJ Holland Celia V CV Carolan James C JC

PLoS neglected tropical diseases 20160804 8

The helminth Ascaris causes ascariasis in both humans and pigs. Humans, especially children, experience significant morbidity including respiratory complications, growth deficits and intestinal obstruction. Given that 800 million people worldwide are infected by Ascaris, this represents a significant global public health concern. The severity of the symptoms and associated morbidity are related to the parasite burden and not all hosts are infected equally. While the pathology of the disease has ...[more]

PMID: 27490109

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Project description:Microtus fortis (M. fortis) is the only mammal in which the growth, development and maturation of schistosomes (Schistosoma japonicum) is prevented, resulting in the failure of the parasite to mature and complete its life cycle. MicroRNAs (miRNAs) are a class of endogenous, non-coding small RNAs, has been found to introduce a whole new layer of gene regulation in eukaryotes. The anti-schistosomiasis mechanosm of M. fortis may require the participation of miRNA-mediated gene expression. In the present study, the difference pathological change of different tissue such as liver, spleen and lung of M. fortis were observed by using haematoxylin-eosin staining. Also, the miRNA expression in different tissue of M. fortis and mice before challenge and 10 days post-infection with schistosomes were first compared using microRNA microarray analysis. Histological analyses showed that S. japonicum infection in M. fortis resulted in more intensive inflammatory response and pathologic change than mice. The microarray investigations showed that 388 miRNAs detected common expressed in the two species, and 11 miRNAs in liver, 25 miRNAs in spleen and 28 miRNAs in lung differentially expressed in non-permissive M. fortis while increased, decreased or nearly fixed in mice. Further studies of the differentially expressed miRNAs demonstrated that many important signal pathway were triggered after the S. japonicum infection in M. fortis rather than the mouse, such as the metabolism of some nutrient material such as fatty-acid, cholesterol, lipid, insulin, and carbohydrate; immune response such as B and T cell differentiation, monocyte differentiation, the inflammation, NF-kappaB binding, even the in innate immune system; Cell differentiation and apoptosis such as erythrocytic differentiation and targeting proapoptotic and antiapoptotic proteins. These results may provide new insights into general mechanisms of regulation in non-permissive M. fortis, exploit the potential miRNA regulatory networks and the interaction between parasites and different hosts, which provide valuable new information on schistosome biology and valuable information for the better understanding of schistosome development and host-parasite interactions. We collected liver, spleen and lung from control and 10 days post-infection with schistosomes of M. fortis, mice and rat, respectively.

			Action	DRS
	C57_Con2.raw	Raw
	C57_Con3.raw	Raw
	C57_Con4.raw	Raw
	C57_Inf1.raw	Raw
	C57_Inf2.raw	Raw