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Joachim Lingner

Cette personne a quitté l’EPFL

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Publications associées (70)

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Telomeric repeat containing RNA and RNA surveillance factors at mammalian chromosome ends

Joachim Lingner

Telomeres, the DNA-protein complexes located at the end of linear eukaryotic chromosomes, are essential for chromosome stability. Until now, telomeres have been considered to be transcriptionally silent. We demonstrate that mammalian telomeres are transcri ...

American Association for the Advancement of Science2007

Human shelterin protein POT1 prevents severe telomere instability induced by homology-directed DNA repair

Joachim Lingner, Galina Glousker, Anna-Sophia Briod

The evolutionarily conserved POT1 protein binds single-stranded G-rich telomeric DNA and has been implicated in contributing to telomeric DNA maintenance and the suppression of DNA damage checkpoint signaling. Here, we explore human POT1 function through g ...

WILEY2020

SMCHD1 promotes ATM-dependent DNA damage signaling and repair of uncapped telomeres

Joachim Lingner, Wareed Ahmed, Marianna Feretzaki, Verena Pfeiffer, Aleksandra Vancevska

Structural maintenance of chromosomes flexible hinge domain-containing protein 1 (SMCHD1) has been implicated in X-chromosome inactivation, imprinting, and DNA damage repair, and mutations in SMCHD1 can cause facioscapulohumeral muscular dystrophy. More re ...

WILEY2020

Detection of TERRA R-Loops at Human Telomeres

Joachim Lingner, Marianna Feretzaki, Galina Glousker, Rita Valador Fernandes

R-loops are three-stranded nucleic acid structures composed of a DNA–RNA hybrid and a displaced DNA strand. The long noncoding RNA TERRA forms R-loops at telomeres influencing the telomeric chromatin composition and impacting on telomere maintenance mechan ...

Springer US2022

Related mechanisms for end processing at telomeres and DNA double-strand breaks

Joachim Lingner, Nahid Iglesias

In a recent issue of Molecular Cell, Bonetti et al. (2009) identify in the yeast Saccharomyces cerevisiae that the molecular activities that generate 3' overhangs at telomeric DNA ends are the same as those that resect DNA at double-strand breaks. ...

2009

Replication of Telomeres and the Regulation of Telomerase

Joachim Lingner, Verena Pfeiffer

Telomeres are the physical ends of eukaryotic chromosomes. They protect chromosome ends from DNA degradation, recombination, and DNA end fusions, and they are important for nuclear architecture. Telomeres provide a mechanism for their replication by semico ...

Cold Spring Harbor Lab Press, Publications Dept2013

Spotiflow: accurate and efficient spot detection for fluorescence microscopy with deep stereographic flow regression

Emine Berna Durmus, Suliana Manley, Joachim Lingner, Gioele La Manno, Martin Weigert, Irina Khven, Can Aztekin, Eftychia Kyriacou, Albert Dominguez Mantes, Anjalie Olivia Schläppi, Georgios Tsissios, Evangelia Skoufa

Identification of spot-like structures in large, noisy microscopy images is a crucial step for many life-science applications. Imaging-based spatial transcriptomics (iST), in particular, relies on the precise detection of millions of transcripts in low sig ...

Nature Publishing Group2025

PRDX1 Counteracts Catastrophic Telomeric Cleavage Events That Are Triggered by DNA Repair Activities Post Oxidative Damage

Joachim Lingner, Wareed Ahmed

Telomeres are prone to damage inflicted by reactive oxygen species (ROS). Oxidized telomeric DNA and nucleotide substrates inhibit telomerase, causing telomere shortening. In addition, ROS can induce telomeric single-strand DNA breaks (SSBs). The peroxired ...

2020

The Rat1p 5’ to 3’ exonuclease degrades telomeric repeat-containing RNA and promotes telomere elongation in Saccharomyces cerevisiae

Joachim Lingner, Sophie Redon, Andrea Bernardo Panza, Nahid Iglesias

Vertebrate telomeres are transcribed into telomeric repeat-containing RNA (TERRA) that associates with telomeres and may be important for telomere function. Here, we demonstrate that telomeres are also transcribed in Saccharomyces cerevisiae by RNA polymer ...

2008

Telomere length homeostasis

Joachim Lingner

The physical ends of chromosomes, known as telomeres, protect chromosome ends from nucleolytic degradation and DNA repair activities. Conventional DNA replication enzymes lack the ability to fully replicate telomere ends. In addition, nucleolytic activitie ...

Springer-Verlag2006

A three-state model for the regulation of telomerase by TERRA and hnRNPA1

Joachim Lingner, Sophie Redon, Ivo Zemp

Telomeres, the physical ends of eukaryotic chromosomes, are transcribed into telomeric repeat-containing RNA (TERRA), a large non-coding RNA, which forms an integral part of telomeric heterochromatin. In vitro, naked TERRA molecules are efficient inhibitor ...

Oxford University Press2013

The finger subdomain of yeast telomerase cooperates with Pif1p to limit telomere elongation

Joachim Lingner

Telomere synthesis depends on telomerase, which contains an RNA subunit linked to a specialized reverse transcriptase subunit and several associated proteins. Here we report the characterization of four mutations in the yeast reverse transcriptase subunit ...

2006

A quantitative telomeric chromatin isolation protocol identifies different telomeric states

Joachim Lingner, Marc Moniatte, Romain Hamelin, Florence Armand, Diego Chiappe, Eric Aeby, Larissa Grolimund

Telomere composition changes during tumourigenesis, aging and in telomere syndromes in a poorly defined manner. Here we develop a quantitative telomeric chromatin isolation protocol (QTIP) for human cells, in which chromatin is cross-linked, immunopurified ...

Nature Publishing Group2013

RAD51-dependent recruitment of TERRA lncRNA to telomeres through R-loops

Joachim Lingner, Marianna Feretzaki, Rita Valador Fernandes, Thomas Frédéric Lunardi

Telomeres-repeated, noncoding nucleotide motifs and associated proteins that are found at the ends of eukaryotic chromosomes-mediate genome stability and determine cellular lifespan1. Telomeric-repeat-containing RNA (TERRA) is a class of long noncoding RNA ...

2020

Telomerase limits the extent of base pairing between template RNA and telomeric DNA

Joachim Lingner

Telomerase is the ribonucleoprotein reverse transcriptase that adds telomeric DNA repeats to the ends of chromosomes. This involves annealing of the telomerase RNA template to the 3' end of the chromosome, reverse transcription of the RNA template by the t ...

2005

Low- to high-throughput analysis of telomerase modulators with Telospot

Joachim Lingner, Gerardo Turcatti, Marc Chambon, Damiano Banfi

We designed a method termed Telospot to discover and characterize telomerase modulators as anticancer drugs or chemical biology tools. Telospot is based on a highly efficient human telomerase expression system and the detection of telomerase DNA reaction p ...

Nature Publishing Group2007

The telomeric DNA damage response occurs in the absence of chromatin decompaction

Suliana Manley, Joachim Lingner, Kyle Michael Douglass, Verena Pfeiffer, Aleksandra Vancevska

Telomeres are specialized nucleoprotein structures that protect chromosome ends from DNA damage response (DDR) and DNA rearrangements. The telomeric shelterin protein TRF2 suppresses the DDR, and this function has been attributed to its abilities to trigge ...

Cold Spring Harbor Laboratory2017

The THO complex component Thp2 counteracts telomeric R-loops and telomere shortening

Joachim Lingner, Verena Pfeiffer, Larissa Grolimund, Jérôme Crittin

Telomere maintenance by the conventional DNA replication machinery and telomerase is assisted by specialized DNA helicases, nucleases and telomere binding proteins. Here, we identify the THO components at telomeres and define critical roles of this complex ...

Nature Publishing Group2013

Reevaluation of telomerase inhibition by quadruplex ligands and their mechanisms of action

Joachim Lingner

Quadruplex ligands are often considered as telomerase inhibitors. Given the fact that some of these molecules are present in the clinical setting, it is important to establish the validity of this assertion. To analyze the effects of these compounds, we us ...

National Academy of Sciences2007

Peroxiredoxin 1 Protects Telomeres from Oxidative Damage and Preserves Telomeric DNA for Extension by Telomerase

Joachim Lingner, Viesturs Simanis, Wareed Ahmed, Sophie Redon, Eric Aeby

Oxidative damage of telomeres can promote cancer, cardiac failure, and muscular dystrophy. Specific mechanisms protecting telomeres from oxidative damage have not been described. We analyzed telomeric chromatin composition during the cell cycle and show th ...

Elsevier2016