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Concept

Réplication circulaire de l'ADN

Publications associées (27)

Advancing Cell-Free Synthetic Biology: From sustained PURE protein synthesis to an isothermal one-pot DNA replication system

Laura Sophie Grasemann

One of the goals of synthetic biology is the development of an artificial cell. Building an artificial cell from scratch will provide a deeper understanding of fundamental mechanisms and models in biology and promises to contribute towards building novel p ...

EPFL2024

Chromosome organization shapes replisome dynamics in Caulobacter crescentus

Suliana Manley, Chen Zhang

DNA replication in bacteria takes place on highly compacted chromosomes, where segregation, transcription, and repair must occur simultaneously. Within this dynamic environment, colocalization of sister replisomes has been observed in many bacterial specie ...

Nature Portfolio2024

C2CAplus: A One-Pot Isothermal Circle-to-Circle DNA Amplification System

Sebastian Maerkl, Laura Sophie Grasemann

Rolling circle amplification (RCA) is a widely used DNA amplification method that uses circular template DNA as input and produces multimeric, linear single- or double-stranded DNA. Circle-to-circle amplification (C2CA) has further expanded this method by ...

Amer Chemical Soc2023

Electronic readout of DNA amplification in nanoliter chambers. Strategies towards highly parallel semiconductor-based nucleic acid amplification testing

Saurabh Tomar

Polymerase chain reaction (PCR) has been the most significant driver in the field of nucleic acid testing (NAT) since its invention. Popularized as an abbreviation by the Covid-19 pandemic, PCR-based methods are the gold standard in the field of diagnostic ...

EPFL2023

Single photon detection with amorphous silicon-based microchannel plates: A Monte Carlo model

Christophe Ballif, Nicolas Würsch, Jonathan Emanuel Thomet, Janina Christine Isabelle Löffler, Samira Alexandra Frey

Microchannel plates based on amorphous silicon have the inherent capability to overcome the existing spatial and temporal resolution limitations of single photon detectors. A Monte Carlo model-based study is presented here that serves to exploit their full ...

2022

Novel irreversible covalent BTK inhibitors discovered using DNA-encoded chemistry

Sevan Mleh Habeshian

Libraries of DNA-Encoded small molecules created using combinatorial chemistry and synthetic oligonucleotides are being applied to drug discovery projects across the pharmaceutical industry. The majority of reported projects describe the discovery of rever ...

PERGAMON-ELSEVIER SCIENCE LTD2021

Towards an artificial cell: Development of a system which self-regenerates the protein components of the PURE system in microfluidic reactors

Barbora Lavickova

Thanks to recent advancements in synthetic biology, the dream of creating a synthetic cell has become feasible. However, due to its inherent complexity, one of the fundamental functions of all living systems, i.e., self-replication, remains to be introduce ...

EPFL2021

Virus lasers for biological detection

Gabriel Aeppli

The selective amplification of DNA in the polymerase chain reaction is used to exponentially increase the signal in molecular diagnostics for nucleic acids, but there are no analogous techniques for signal enhancement in clinical tests for proteins or cell ...

Springer2019

RADX: A novel single-stranded DNA-binding protein regulating telomere recombination

Anna-Sophia Briod

Telomeres are specialized nucleoprotein structures present at the ends of linear chromosome. The telomeric DNA part is comprised of 5-15 kilo base pairs of double stranded TTAGGG repeats and it contains at the 3' end a single-stranded G-rich overhang of 50 ...

EPFL2019

Exploring on Protein-DNA interactions

Alexandra Styliani Kalantzi

A variety of DNA-binding proteins organizes the chromosomal DNA and regulates gene transcription, and DNA replication and recombination. In particular, for gene regulation there is a category of DNA-binding proteins, the transcription factors, which can de ...

EPFL2019

Isothermal multiple displacement amplification of DNA templates in minimally buffered conditions using phi29 polymerase

Carlotta Guiducci, Enrico Tenaglia

The isothermal amplification of DNA in minimally buffered conditions allows to perform and monitor nucleic acid amplification with minimal technological and operative requirements. We show in this work how phi29 can operate multiple displacement amplificat ...

Royal Society of Chemistry2018

Simultaneous preservation of the DNA quality, the community composition and the density of freshwater oligochaetes for the development of genetically based biological indices

Régis Lionel Vivien

Introduction. Oligochaetes are recognized as valuable bioindicators of sediment quality in streams and lakes. The development of an oligochaete index based on the identification of specimens using DNA barcodes requires a method for simultaneously preservin ...

2018

MAR-Mediated transgene integration into permissive chromatin and increased expression by recombination pathway engineering

Christian Iseli, Nicolas Mermod, Thomas Junier

Untargeted plasmid integration into mammalian cell genomes remains a poorly understood and inefficient process. The formation of plasmid concatemers and their genomic integration has been ascribed either to non-homologous end-joining (NHEJ) or homologous r ...

2017

Restriction endonuclease AgeI is a monomer which dimerizes to cleave DNA

Virginija Jovaisaite

Although all Type II restriction endonucleases catalyze phosphodiester bond hydrolysis within or close to their DNA target sites, they form different oligomeric assemblies ranging from monomers, dimers, tetramers to higher order oligomers to generate a dou ...

Oxford University Press (OUP)2017

Nanocapillaries combined with optical tweezers as a single molecule technique for studying DNA-protein complexes

Roman Bulushev

Interactions of proteins with DNA are essential for carrying out DNA's biological functions and performing a cellular cycle. Such processes as DNA replication, expression and repair are performed by an organised action of various proteins. To better unders ...

EPFL2017

Spatial confinement induces hairpins in nicked circular DNA

Giovanni Dietler, Aleksandre Japaridze

In living cells, DNA is highly confined in space with the help of condensing agents, DNA binding proteins and high levels of supercoiling. Due to challenges associated with experimentally studying DNA under confinement, little is known about the impact of ...

Oxford University Press (OUP)2017

Microfluidic-assisted chromogenic in situ hybridization (MA-CISH) for fast and accurate breast cancer diagnosis

Martinus Adela Maria Gijs, Raphaël Etienne Jean Trouillon, Huu Tuan Nguyen

Chromogenic in situ hybridization (CISH) is a common technique that is used for human epidermal growth factor receptor 2 (HER2) assessment in breast cancer diagnosis. CISH is based on the enzymatic amplification of DNA markers, generating a colorimetric im ...

Elsevier2017

Integrating Gene Synthesis and MITOMI for Rapid Protein Engineering

Matthew Christopher Blackburn

The research described within this thesis is primarily motivated by two fields of science with reversed, yet complementary, approaches to addressing the same essential objective: manipulating and understanding the complex program of life. Whereas synthetic ...

EPFL2016

Understanding and Engineering Thermostability in DNA Ligase from Thermococcus sp 1519

Matteo Dal Peraro, Hasan Pezeshgi Modarres

The physical chemical principles underlying,enzymatic thermostability are keys to understand the way evolution has shaped proteins,to adapt to a broad range of temperatures. Understanding the molecular determinants at the basis of protein thermostability i ...

Amer Chemical Soc2015

Modeling and Engineering Proteins Thermostability

Hasan Pezeshgi Modarres

Enzymes have evolved during millions of years to become efficient catalysts for specific biochemical reactions within a specific range of working conditions in the cellular environment. The activity of an enzyme is directly related to its folded structure ...

EPFL2015