Olivier Borkowski

@oborkowski.bsky.social

Tenured Scientist in Synthetic Biology (INRAE, Paris Area, France) #CellFree ⦁ #SynBio ⦁ #Bioengineering ⦁ #Microbiology https://sites.google.com/view/olivierborkowski

Our lab’s latest on synthetic genomics “Synthetic Combinatorial Minimisation of Cell Cycle Control” is up now on BioRxiv - covering ambitious yeast #synbio cell cycle work led by Anastasiya Malyshava and co-supervised by Matteo Barberis.

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When we talk with AI researchers, one question comes up most frequently: do you have datasets focused on mutations at key protein positions? Until now, building libraries for that usually meant a lot of DNA synthesis. We developed HGT-DGR as a faster and cheaper way to make them.

bioRxivpreprint@biorxivpreprint.bsky.social · 2w ago

Continuous target-specific mutagenesis and rapid gene evolution by diversity-generating retroelements in Escherichia coli https://www.biorxiv.org/content/10.64898/2026.07.21.739853v1

New scientific publication in PNAS: "Improving cell-free metabolism through direct integration of artificial respiratory chains" The researchers built tailored artificial respiratory chains from the bottom up, designed to mimic and enhance the properties of cellular respiration. edu.nl/dww3x

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Proceedings of the National Academy of Sciences (PNAS), a peer reviewed journal of the National Academy of Sciences (NAS) - an authoritative source of high-impact, original research that broadly spans...

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Genetic manipulation of a giant virus-associated virophage | bioRxiv https://www.biorxiv.org/content/10.64898/2026.06.16.732491v1

Genetic manipulation of a giant virus-associated virophage

Virophages are double-stranded DNA viruses that hyperparasitize giant viruses infecting unicellular eukaryotes. Parasitization by virophages often reduces the replication of giant viruses, thereby modulating microbial communities in the environment. However, the molecular mechanisms underlying the tripartite relationship are largely unknown due to methodological limitations. In the present study, we developed a reverse-genetics system for a Sputnik virophage that parasitizes the amoeba-infecting giant virus, mimivirus. We demonstrated that transfection of genomic DNA could recover infectious virophage particles. Transfection of genomic DNA synthesized by circular polymerase extension reaction (CPER) also resulted in the recovery of infectious viruses. As a proof of concept, we successfully modified two Sputnik genes by transfecting CPER-assembled mutant genomic DNA. Collectively, our reverse-genetics system provides a framework for assessing the functional importance of Sputnik genes and should facilitate future genetic studies of virophages. ### Competing Interest Statement The authors have declared no competing interest. Japan Society for the Promotion of Science, https://ror.org/00hhkn466, 25K18450, 22K15175, 22H00384 Japan Science and Technology Agency, JPMJAX22BI

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