{"id":8080,"date":"2021-02-18T13:07:03","date_gmt":"2021-02-18T13:07:03","guid":{"rendered":"https:\/\/website.prod.unilu.spikeseed.cloud\/en\/news\/pathofact-identifies-pathogens-faster-and-more-accurately\/"},"modified":"2021-02-18T13:07:03","modified_gmt":"2021-02-18T13:07:03","slug":"pathofact-identifies-pathogens-faster-and-more-accurately","status":"publish","type":"news","link":"https:\/\/www.uni.lu\/en\/news\/pathofact-identifies-pathogens-faster-and-more-accurately\/","title":{"rendered":"PathoFact identifies pathogens faster and more accurately"},"content":{"rendered":"

Scientists from the Luxembourg Centre for Systems Biomedicine (LCSB) and the Department of Life Sciences and Medicine of the University of Luxembourg have developed a new bioinformatics tool that can help them identify pathogens much faster and more accurately than was ever possible with conventional diagnostic methods. The team led by Professor Paul Wilmes, head of the Systems Ecology group at the LCSB, makes use of so-called metagenomic data. Using high-throughput methods, they sequence all of the genome fragments obtained from samples that potentially contain pathogenic organisms. The new bioinformatics tool \u2013 which the LCSB team has named PathoFact \u2013 compares these gene sequences against an integrated database. PathoFact identifies the genes of microorganisms that are responsible for their pathogenic potential or \u2013 in the case of bacteria \u2013 their antibiotic resistance. Based on this knowledge, the researchers can determine which pathogens are responsible for an infection and, in future clinical practice, suggest suitable treatments. PathoFact furthermore helps scientists to better understand the influence of microorganisms in the onset of chronic diseases such as Parkinson\u2019s or rheumatoid arthritis.<\/p>

The paper on PathoFact by Prof. Wilmes\u2019 team is published today in the\u00a0Microbiome<\/i>. PathoFact is an open access tool, available at\u00a0https:\/\/pathofact.lcsb.uni.lu<\/a>.\u00a0<\/p>\n

\nNew research tool for the diagnosis of infections<\/h2>\n

Today, infections are still diagnosed using methods very similar to those of 120 years ago, from the days of Robert Koch and Louis Pasteur. Bacteria, for example, are isolated from patient samples, cultivated and then identified. It will often take several days to know what kind of infection a patient has or how it can be treated. \u201cIn the age of high-throughput genome sequencing, this should be faster,\u201d says Prof. Paul Wilmes<\/a>. \u201cTo speed things up, we need to advance the right bioinformatics techniques and combine them appropriately.\u201d His team has done just that with PathoFact. In the lead was Laura de Nies, the first author of the paper and a PhD candidate in Prof. Wilmes\u2019 group.<\/p>

Among other things, PathoFact can use real-time data originating from so-called metagenomic sequencing. \u201cThis is where all of the genes of all microorganisms found in a sample are sequenced,\u201d Laura de Nies explains: \u201cEven while the sequencing is still running, PathoFact can already compare the data obtained against its integrated gene database.\u201d PathoFact searches for genes that encode virulence factors or antibiotic resistances. Virulence factors for example include proteins that ensure a germ\u2019s survival in the human body or toxic metabolic products that make us sick.<\/p>

Scientists already know many genes that encode virulence factors and other microbial structures responsible for antibiotic resistance. Their sequences are recorded in PathoFact\u2019s database. Yet, there will always be unknown ones. \u201cWith PathoFact, we can identify even those genes,\u201d says Laura de Nies: \u201cThe proteins that the genes encode will resemble known structures. They will have certain features that are characteristic of virulence factors or antimicrobial resistance.\u201d This means that with PathoFact the researchers can gain new knowledge about pathogens and identify species that have never been known to be pathogenic.<\/p>\n

\nChronic diseases and COVID-19<\/h2>\n

Prof. Wilmes\u2019 main focus is on chronic diseases such as Parkinson\u2019s or rheumatoid arthritis: there is a well substantiated theory that the onset of such diseases involves changes in the composition of the body\u2019s microbial communities, or microbiome. \u201cThe bacteria that live in and on us are in constant competition with each other,\u201d Wilmes says. \u201cCertain circumstances in life can cause harmful organisms to become more prolific and to trigger a disease with their toxic products.\u201d Using PathoFact, the scientists can now detect such shifts in the microbial ecosystem faster and more accurately than before \u2013 and move further ahead in their basic research into chronic diseases.<\/p>

Paul Wilmes would like to see this tool benefit medical diagnoses. For example, it could be used by physicians to better predict severe cases of COVID-19. This viral disease is often accompanied by so-called co-infections. These are caused by bacteria or by viruses other than SARS-CoV-2. \u201cWith PathoFact, we can identify those pathogens faster than before. This opens up better possibilities for treatments, so that physicians may in future prevent severe progressions of COVID-19.\u201d To make this possible, Prof. Wilmes is planning to collaborate with a large Luxembourg diagnostics company. \u201cThe company is using established methods to study samples, which we will analyse simultaneously with PathoFact. In this way, we will continue to improve and validate the high accuracy of our method, so that harmful microbial infections will be treated more rapidly and in a more targeted manner in the future.\u201d<\/p>

—<\/p>

The development of PathoFact was funded by the Luxembourg National Research Fund (FNR) and in the framework of an ERC Consolidator Grant for the project \u201cExpoBiome\u201d. Laura de Nies is a doctoral student in the Doctoral Training Unit \u201cMicrobiomes in One Health\u201d (MICROH), also funded by the FNR through its PRIDE programme.<\/p>

Reference: de Nies, L., Lopes, S., Busi, S.B. et al.\u00a0PathoFact: a pipeline for the prediction of virulence factors and antimicrobial resistance genes in metagenomic data. Microbiome 9, 49 (2021).\u00a0https:\/\/doi.org\/10.1186\/s40168-020-00993-9<\/a><\/p>

Picture:\u00a0\u00a9 Valentina Galata<\/p><\/div><\/section>","protected":false},"excerpt":{"rendered":"

Scientists from the Luxembourg Centre for Systems Biomedicine (LCSB) and the Department of Life Sciences and Medicine of the University of Luxembourg have developed a new bioinformatics tool that can help them identify pathogens much faster and more accurately than was ever possible with conventional diagnostic methods. The team led by Professor Paul Wilmes, head of the Systems Ecology group at the LCSB, makes use of so-called metagenomic data. Using high-throughput methods, they sequence all of the genome fragments obtained from samples that potentially contain pathogenic organisms. The new bioinformatics tool \u2013 which the LCSB team has named PathoFact \u2013 compares these gene sequences against an integrated database. PathoFact identifies the genes of microorganisms that are responsible for their pathogenic potential or \u2013 in the case of bacteria \u2013 their antibiotic resistance. Based on this knowledge, the researchers can determine which pathogens are responsible for an infection and, in future clinical practice, suggest suitable treatments. PathoFact furthermore helps scientists to better understand the influence of microorganisms in the onset of chronic diseases such as Parkinson\u2019s or rheumatoid arthritis.<\/p>\n","protected":false},"author":0,"featured_media":8081,"template":"","format":"standard","meta":{"featured_image_focal_point":[],"show_featured_caption":false,"ulux_newsletter_groups":"","uluxPostTitle":"","uluxPrePostTitle":"","_trash_the_other_posts":false,"_price":"","_stock":"","_tribe_ticket_header":"","_tribe_default_ticket_provider":"","_tribe_ticket_capacity":"0","_ticket_start_date":"","_ticket_end_date":"","_tribe_ticket_show_description":"","_tribe_ticket_show_not_going":false,"_tribe_ticket_use_global_stock":"","_tribe_ticket_global_stock_level":"","_global_stock_mode":"","_global_stock_cap":"","_tribe_rsvp_for_event":"","_tribe_ticket_going_count":"","_tribe_ticket_not_going_count":"","_tribe_tickets_list":"[]","_tribe_ticket_has_attendee_info_fields":false},"news-category":[10],"news-topic":[26],"organisation":[209,233],"authorship":[],"acf":[],"yoast_head":"\nPathoFact identifies pathogens faster and more accurately - University of Luxembourg<\/title>\n<meta name=\"description\" content=\"Scientists from the Luxembourg Centre for Systems Biomedicine (LCSB) and the Department of Life Sciences and Medicine of the University of Luxembourg have developed a new bioinformatics tool that can help them identify pathogens much faster and more accurately than was ever possible with conventional diagnostic methods. 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