Author

Reetta K. Penttinen

University of JyväskyläORCID 0000-0003-2152-9889Unclaimed ORCID profile · follow to get notified of new preprints

Biology Disciplines

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Signature Assays, Organisms & Methods

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Approach:experimental assay· 5 Research Focus:host-pathogen & immune response· 5 Organism:bacteria (other)· 2 Research Focus:ecology & biodiversity· 2 Assay:DNA methylation· 1 Research Focus:drug response / drug discovery· 1 Organism:E. coli· 1 Organism:human· 1

Frequent Co-Authors

Lotta‐Riina SundbergiD· 4 shared Janne RavanttiiD· 3 shared Antti HakaneniD· 2 shared Elina LaantoiD· 2 shared Ilmur JonsdottiriD· 2 shared Kati MäkeläiD· 2 shared Matti JalasvuoriiD· 2 shared Annaleena Pajander· 1 shared

Activity by Year

2025-2026 · peak 3/yr

Co-Author Collaboration Network

10 top collaborators · 24 mutual co-author links

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4 shared papersMicrobiology

Lotta‐Riina SundbergORCID

Mutual co-authors in cluster

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5 papers

Recent·Most cited

Mucin modulates phage infection dynamics and biofilm formation in enteropathogenic Yersinia enterocolitica

Sophia Goladze, Daniel de Oliveira Patricio, Ericka Allen, Reetta K. Penttinen, Henni Tuomala, Sheetal Patpatia, Matti Ylänne, Bent Petersen, Mikael Skurnik, Gabriel Magno de Freitas Almeida, Lotta‐Riina Sundberg

This study examines how mucins affect phage infection and biofilm formation in Yersinia enterocolitica, showing enhanced phage replication and bacterial survival with mucin exposure.

Current Research in Microbial Sciences · Jun 3, 2026Peer-reviewedMicrobiology

New Finnlakevirus isolate FLiP-2 provides insight into the ecology of ssDNA phages in Flavobacterium hosts

Kati Mäkelä, Elina Laanto, Reetta K. Penttinen, Janne Ravantti, Kim Kreuze, Lotta‐Riina Sundberg

The paper isolates and characterizes a new Finnlakevirus strain, FLiP-2, showing differences in host interaction and environmental adaptability compared to its relative FLiP and a dsDNA phage.

Environmental Microbiology · Jun 1, 2026Peer-reviewedMicrobiology

ssDNA phage FLiP resides in dsDNA form in resistant Flavobacterium host

Kati Mäkelä, Reetta K. Penttinen, Janne Ravantti, Elina Laanto, Lotta‐Riina Sundberg

The study investigates phage resistance mechanisms in Flavobacterium hosts against ssDNA phage FLiP, finding that resistant hosts may harbor FLiP genomes in dsDNA form, suggesting lysogeny and a potential survival strategy.

Biology Direct · Dec 4, 2025Peer-reviewedMicrobiology

ESBL plasmid compatibility with the surrounding microbial community influences ESBL gene survival under CRISPR-antimicrobial targeting

Cindy Given, Ilmur Jonsdottir, Krista Norvasuo, Petra Paananen, Pilvi Ruotsalainen, Teppo Hiltunen, Marianne Gunell, Antti Hakanen, Matti Jalasvuori, Reetta K. Penttinen

This study shows CRICON reduces ESBL prevalence in bacterial communities, but ESBL persistence depends on initial community composition and plasmid escape into competitive hosts.

bioRxiv · Apr 15, 2025 · PreprintMicrobiology

Longitudinal dynamics of gut plasmidome and antibiotic resistance during antibiotic therapy: a case report

Ilmur Jonsdottir, Sean Meaden, Paulina T. P. Salminen, Teemu Kallonen, Janne Ravantti, Annaleena Pajander, Sanja Vanhatalo, Matti Jalasvuori, Lotta‐Riina Sundberg, Edze Rients Westra, Stineke van Houte, Antti Hakanen, Reetta K. Penttinen

This study tracks changes in gut plasmid populations and antibiotic resistance during and after antibiotic therapy in a single patient with ESBL-carrying E. coli.

bioRxiv · Apr 12, 2025 · PreprintMicrobiology