Understanding global changes of the mouse brain proteome after vaginal infection with HSV-2 using a label-free shotgun approach.

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The number of severe central nervous system infections caused by the virus has increased recently. However, the pathogenesis of HSV-2 infection in the nervous system is not fully understood. Here, we demonstrated global proteomic changes in the brain tissue in BALB/c mice vaginally infected with HSV-2. Data are available via ProteomeXchange with identifier PXD034186. A total of 249 differentially expressed proteins were identified in infected brain tissue. The GO and KEGG enrichment analysis of these proteins indicated that they were mainly involved in the regulation of synapse formation and synaptic excitability. In addition, genes affecting autophagy, the development of other neurodegenerative diseases, and signaling pathways relevant to other neurologic diseases were identified. Additional experiments, comparing the brain tissue of asymptomatic and symptomatic mice showed a differential expression of proteins involved in synapse formation and synaptic transmission. Others were involved in autophagy, addiction, and signaling pathways of other neurologic diseases. These results suggest that changes in synaptic structure and function, as well as autophagy, may be related to the development of neurologic abnormalities that follow HSV-2 infection. We also identified a protein GluN2A encoded by Grin2a was continuously expressed at high levels after infection. We propose that GluN2A may be a key molecule in the pathogenesis of HSV-2-induced neurologic diseases.", "claims": [{"id": "claim-method", "statement": "In the previous step, we screened the proteins according to PSM score ≥ 1.5, and screened the differential proteins of Day3 and Day7 groups compared with Control according to Adj. P-Value (PV) <0.01, |Log2 FoldChange (FC)|>1. To test the plausibility and accuracy of differentially expressed molecules the detected proteins were aggregated together based on the trend of expression levels using cluster analysis.", "kind": "methodological", "target": null, "evidence": [{"asset": "source:pmid:36061859", "locator": "sections[11] \"2.4.3.2 Differential protein analysis\" paragraph 2", "quote": "In the previous step, we screened the proteins according to PSM score ≥ 1.5, and screened the differential proteins of Day3 and Day7 groups compared with Control according to Adj. P-Value (PV) <0.01, |Log2 FoldChange (FC)|>1. To test the plausibility and accuracy of differentially expressed molecules the detected proteins were aggregated together based on the trend of expression levels using cluster analysis."}], "state": "complete"}, {"id": "claim-data-access", "statement": "The data presented in the study are deposited in the ProteomeXchange Consortium via the PRIDE partner repository,accession number PXD034186.", "kind": "methodological", "target": null, "evidence": [{"asset": "source:pmid:36061859", "locator": "sections[19] \"Data availability statement\" paragraph 2", "quote": "The data presented in the study are deposited in the ProteomeXchange Consortium via the PRIDE partner repository,accession number PXD034186."}], "state": "complete"}, {"id": "claim-target-result", "statement": "HSV-2 infection was associated with 249 differentially expressed brain proteins primarily involved in synapse formation, synaptic excitability, and autophagy.", "kind": "qualitative", "target": null, "evidence": [{"asset": "source:pmid:36061859", "locator": "sections[0] \"Abstract\" paragraph 1", "quote": "A total of 249 differentially expressed proteins were identified in infected brain tissue."}, {"asset": "source:pmid:36061859", "locator": "sections[0] \"Abstract\" paragraph 1", "quote": "The GO and KEGG enrichment analysis of these proteins indicated that they were mainly involved in the regulation of synapse formation and synaptic excitability."}, {"asset": "source:pmid:36061859", "locator": "sections[0] \"Abstract\" paragraph 1", "quote": "In addition, genes affecting autophagy, the development of other neurodegenerative diseases, and signaling pathways relevant to other neurologic diseases were identified."}], "state": "complete"}], "gaps": []}, "experiment": {"state": "complete", "objective": "HSV-2 infection was associated with 249 differentially expressed brain proteins primarily involved in synapse formation, synaptic excitability, and autophagy.", "steps": [{"id": "read_published_estimate", "order": 1, "name": "Read the published estimate from the source", "kind": "other", "state": "complete", "blocked_on": null, "description": "The claim, method and evidence span published with the source article.", "duration_hours": null, "parameters": {}, "inputs": ["source:pmid:36061859"], "outputs": ["the published estimate and its evidence"], "instruments": [], "reagents": []}, {"id": "obtain_source_data", "order": 2, "name": "Obtain the source data from the named repository", "kind": "data-preparation", "state": "complete", "blocked_on": null, "description": "The GEO series accession resolves and its sample accessions are listed. 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