Martin Teichmann

Martin Teichmann
University of Bordeaux · Department of Life and Health Sciences

M.D.
Professor at Bordeaux University

About

72
Publications
7,063
Reads
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2,959
Citations
Citations since 2016
22 Research Items
1652 Citations
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Introduction
The "Targeting Transcription in Breast Cancer" team aims to elucidate molecular mechanisms underlying the development of breast cancer and hopes to use this knowledge to find new treatments. Our work focuses primarily on transcriptional activities in triple negative and molecular apocrine breast cancer. The team is composed of clinicians, bioinformaticians, pathologists and molecular biologists.
Additional affiliations
January 2022 - present
University of Bordeaux
Position
  • Group Leader
January 2016 - December 2021
University of Bordeaux
Position
  • Group Leader
January 2007 - December 2015
French Institute of Health and Medical Research
Position
  • Group Leader
Education
September 1991 - August 1992
Universität Heidelberg
Field of study
  • Medecine
September 1985 - August 1991
Philipps University of Marburg
Field of study
  • Medicine

Publications

Publications (72)
Article
Full-text available
RNA polymerase (Pol) III transcribes short untranslated RNAs that contribute to the regulation of gene expression. Two isoforms of human Pol III have been described that differ by the presence of the POLR3G/RPC32α or POLR3GL/RPC32β subunits. POLR3G was found to be expressed in embryonic stem cells and at least a subset of transformed cells, whereas...
Article
Full-text available
Transcription factors (TFs) bind DNA in a sequence-specific manner and are generally cell type-specific factors and/or developmental master regulators. In contrast, general TFs (GTFs) are part of very large protein complexes and serve for RNA polymerases’ recruitment to promoter sequences, generally in a cell type-independent manner. Whereas, sever...
Article
Full-text available
RNA polymerase (Pol) III transcribes small untranslated RNAs such as 5S ribosomal RNA, transfer RNAs, and U6 small nuclear RNA. Because of the functions of these RNAs, Pol III transcription is best known for its essential contribution to RNA maturation and translation. Surprisingly, it was discovered in the last decade that various inherited mutati...
Article
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A Correction to this paper has been published: https://doi.org/10.1038/s41594-021-00574-w.
Article
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Resolving RNA polymerase structures at the atomic level has revolutionized our understanding of transcription. Three articles now published in Nature Structural & Molecular Biology and Nature Communications decipher unique properties of human RNA polymerase III and propose built-in modules within the enzyme that mediate transcriptional activation,...
Article
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How repetitive elements, epigenetic modifications, and architectural proteins interact ensuring proper genome expression remains poorly understood. Here, we report regulatory mechanisms unveiling a central role of Alu elements (AEs) and RNA polymerase III transcription factor C (TFIIIC) in structurally and functionally modulating the genome via chr...
Article
Full-text available
In Eukaryotes, tRNAs, 5S RNA and U6 RNA are transcribed by RNA polymerase (Pol) III. Human Pol III is composed of 17 subunits. Three specific Pol III subunits form a stable ternary subcomplex (RPC62-RPC39-RPC32α/β) being involved in pre-initiation complex formation. No paralogues for subunits of this subcomplex subunits have been found in Pols I or...
Article
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Oncogenesis is considered to result from chromosomal instability, in addition to oncogene and tumor-suppressor alterations. Intermediate to aneuploidy and chromosomal instability, genome doubling is a frequent event in tumor development but the mechanisms driving tetraploidization and its impact remain unexplored. Cell fusion, one of the pathways t...
Preprint
Oncogenesis is considered to result from chromosomal instability, in addition to oncogene and tumor-suppressor alterations. Intermediate to aneuploidy and chromosomal instability, genome doubling is a frequent event in tumor development but the mechanisms driving tetraploidization and its impact remain unexplored. Cell fusion, one of the pathways t...
Article
Full-text available
RNA polymerase III (Pol III) is an essential enzyme responsible for the synthesis of several small non-coding RNAs, a number of which are involved in mRNA translation. Recessive mutations in POLR3A, encoding the largest subunit of Pol III, cause POLR3-related hypomyelinating leukodystrophy (POLR3-HLD), characterized by deficient central nervous sys...
Article
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CRISPR-Cas9 is a promising technology for genome editing. Here we use Cas9 nuclease-induced double-strand break DNA (DSB) at the UROS locus to model and correct congenital erythropoietic porphyria. We demonstrate that homology-directed repair is rare compared with NHEJ pathway leading to on-target indels and causing unwanted dysfunctional protein....
Article
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RNA polymerase (pol) III occurs in two forms, containing either the POLR3G subunit or the related paralogue POLR3GL. Whereas POLR3GL is ubiquitous, POLR3G is enriched in undifferentiated cells. Depletion of POLR3G selectively triggers proliferative arrest and differentiation of prostate cancer cells, responses not elicited when POLR3GL is depleted....
Article
Full-text available
Objective: To identify the genetic cause of hypomyelinating leukodystrophy in 2 consanguineous families. Methods: Homozygosity mapping combined with whole-exome sequencing of consanguineous families was performed. Mutation consequences were determined by studying the structural change of the protein and by the RNA analysis of patients' fibroblas...
Preprint
paragraph The mammalian genome is shaped by the expansion of repetitive elements that provide new regulatory networks for coordinated control of gene expression ¹ and genome folding 2–4 . Alu elements (AEs) are selectively retained close to the transcription start site of genes ⁵ , show protoenhancer functions ⁶ , correlate with the level of chroma...
Article
Full-text available
RNA polymerase (Pol) III transcribes small untranslated RNAs that are essential for cellular homeostasis and growth. Its activity is regulated by inactivation of tumor suppressor proteins and overexpression of the oncogene c-MYC, but the concerted action of these tumor-promoting factors on Pol III transcription has not yet been assessed. In order t...
Article
Full-text available
Recessive mutations in the ubiquitously expressed POLR3A gene cause one of the most frequent forms of childhood-onset hypomyelinating leukodystrophy (HLD): POLR3-HLD. POLR3A encodes the largest subunit of RNA Polymerase III (Pol III), which is responsible for the transcription of transfer RNAs (tRNAs) and a large array of other small non-coding RNA...
Article
Continuous glucose monitoring is an efficient method for the management of diabetes and in limiting the complications induced by large fluctuations in glucose levels. For this, intravascular systems may assist in producing more reliable and accurate devices. However, neo-vascularization is a key factor to be addressed in improving their biocompatib...
Article
Full-text available
Transcription initiation by eukaryotic RNA polymerase (Pol) III relies on the subcomplex RPC62/RPC39/RPC32. Two distinct isoforms of RPC32 are encoded in the human genome. RPC32α expression is highly regulated and found only in stem cells and transformed cells, whereas RPC32β is ubiquitously expressed in tissues. Here we identify a core-interacting...
Article
Full-text available
Accumulating evidence suggests that changes of the protein synthesis machinery alter translation of specific mRNAs and participate in malignant transformation. Here we show that protein kinase C α (PKCα) interacts with TRM61, the catalytic subunit of the TRM6/61 tRNA methyltransferase. The TRM6/61 complex is known to methylate the adenosine 58 of t...
Article
-Mutations in sarcomeric and cytoskeletal proteins are a major cause of hereditary cardiomyopathies, but our knowledge remains incomplete as to how the genetic defects execute their effects. -We used cysteine and glycine-rich protein 3 (CSRP3), a known cardiomyopathy gene, in a yeast two-hybrid screen and identified zinc finger and BTB domain conta...
Article
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ABSTRACT CGGBP1 (CGG triplet repeat-binding protein 1) regulates cell proliferation, stress response, cytokinesis, telomeric integrity and transcription. It could affect these processes by modulating target gene expression under different conditions. Identification of CGGBP1-target genes and their regulation could reveal how a transcription regulat...
Article
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In mammalian cells, the MYC oncoprotein binds to thousands of promoters. During mitogenic stimulation of primary lymphocytes, MYC promotes an increase in the expression of virtually all genes. In contrast, MYC-driven tumour cells differ from normal cells in the expression of specific sets of up- and downregulated genes that have considerable progno...
Article
Full-text available
Human RNA polymerase III transcribes small untranslated RNAs that contribute to the regulation of essential cellular processes, including transcription, RNA processing and translation. Analysis of this transcription system by in vitro transcription techniques has largely contributed to the discovery of its transcription factors and to the understan...
Article
RNA polymerase III (Pol III) transcription is regulated by modifications of the chromatin. DNA methylation and post-translational modifications of histones, such as acetylation, phosphorylation and methylation have been linked to Pol III transcriptional activity. In addition to being regulated by modifications of DNA and histones, Pol III genes and...
Article
The winged helix (WH) domain is found in core components of transcription systems in eukaryotes and prokaryotes. It represents a sub-class of the helix-turn-helix motif. The WH domain participates in establishing protein-DNA and protein-protein-interactions. Here, we discuss possible explanations for the enrichment of this motif in transcription sy...
Article
Mutations in POLR3A encoding the largest subunit of RNA polymerase III (Pol III) were found to be responsible for the majority of cases presenting with three clinically overlapping hypomyelinating leukodystrophy phenotypes. We uncovered in three cases without POLR3A mutation recessive mutations in POLR3B, which codes for the second largest subunit...
Article
Leukodystrophies are a heterogeneous group of inherited neurodegenerative disorders characterized by abnormal white matter visible by brain imaging. It is estimated that at least 30% to 40% of individuals remain without a precise diagnosis despite extensive investigations. We mapped tremor-ataxia with central hypomyelination (TACH) to 10q22.3-23.1...
Article
Eukaryotic genomes are punctuated by a multitude of tiny genetic elements, that share the property of being recognized and transcribed by the RNA polymerase (Pol) III machinery to produce a variety of small, abundant non-protein-coding (nc) RNAs (tRNAs, 5S rRNA, U6 snRNA and many others). The highly selective, efficient and localized action of Pol...
Article
Full-text available
The 17-subunit human RNA polymerase III (hPol III) transcribes small, untranslated RNA genes that are involved in the regulation of transcription, splicing and translation. hPol III subunits hRPC62, hRPC39 and hRPC32 form a stable ternary subcomplex required for promoter-specific transcription initiation by hPol III. Here, we report the crystal str...
Article
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Human RNA polymerase (Pol) III-transcribed genes are thought to share a simple termination signal constituted by four or more consecutive thymidine residues in the coding DNA strand, just downstream of the RNA 3'-end sequence. We found that a large set of human tRNA genes (tDNAs) do not display any T(≥4) stretch within 50 bp of 3'-flanking region....
Article
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In the course of evolution of multi-cellular eukaryotes, paralogs of general transcription factors and RNA polymerase subunits emerged. Paralogs of transcription factors and of the RPC32 subunit of RNA polymerase III play important roles in cell type- and promoter-specific transcription. Here we discuss their respective functions.
Article
Full-text available
RNA polymerase III transcribes small untranslated RNAs that fulfill essential cellular functions in regulating transcription, RNA processing, translation and protein translocation. RNA polymerase III transcription activity is tightly regulated during the cell cycle and coupled to growth control mechanisms. Furthermore, there are reports of changes...
Article
Full-text available
Transcription in eukaryotic nuclei is carried out by DNA-dependent RNA polymerases I, II, and III. Human RNA polymerase III (Pol III) transcribes small untranslated RNAs that include tRNAs, 5S RNA, U6 RNA, and some microRNAs. Increased Pol III transcription has been reported to accompany or cause cell transformation. Here we describe a Pol III subu...
Article
Full-text available
The re-replication inhibitor Geminin binds to several transcription factors including homeodomain proteins, and to members of the polycomb and the SWI/SNF complexes. Here we describe the TATA-binding protein-like factor-interacting protein (TIPT) isoform 2, as a strong binding partner of Geminin. TIPT2 is widely expressed in mouse embryonic and adu...
Data
Subcellular localization of TIPT2 in cultured cells. This file contains a supplemental immunohistochemical analysis of TIPT2 expression in cultured cells.
Data
Table of oligonucleotide sequences. This table supplies the sequences of all oligonucleotides used in this study.
Article
Full-text available
PTEN, a tumor suppressor whose function is frequently lost in human cancers, possesses a lipid phosphatase activity that represses phosphatidylinositol 3-kinase (PI3K) signaling, controlling cell growth, proliferation, and survival. The potential for PTEN to regulate the synthesis of RNA polymerase (Pol) III transcription products, including tRNAs...
Article
The role of RNA polymerase (Pol) III in eukaryotic transcription is commonly thought of as being restricted to a small set of highly expressed, housekeeping non-protein-coding (nc)RNA genes. Recent studies, however, have remarkably expanded the set of known Pol III-synthesized ncRNAs, suggesting that gene-specific Pol III regulation is more common...
Article
Full-text available
TFIIIC in yeast and humans is required for transcription of tRNA and 5 S RNA genes by RNA polymerase III. In the yeast Saccharomyces cerevisiae, TFIIIC is composed of six subunits, five of which are conserved in humans. We report the identification, molecular cloning, and characterization of the sixth subunit of human TFIIIC, TFIIIC35, which is rel...
Article
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The lack of direct targets for TATA-binding protein (TBP)-like factors (TLFs) confounds the understanding of their role in gene expression. Here we report that human TLF (also called TBP-related factor 2 [TRF2]) activates a number of different genes, including the neurofibromatosis type 1 (NF1) gene. The overexpression of TLF increases the amount o...
Article
Human transcription factor IIIA (htFIIIA), specifically required for transcription of the gene for 5S ribosomal RNA has been characterized with respect to some of its physical, immunological and functional properties. TFIIIA from HeLa cells, which selectively binds 5S RNA, is a monomer of ∼ 35 kDa with a Stokes' radius of ∼ 2.65 nm and a sedimentat...
Article
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The general human RNA polymerase III transcription factor (TF) IIIC1 has hitherto been ill defined with respect to the polypeptides required for reconstitution of its activity. Here we identify Homo sapiens TFIIIB" (HsBdp1) as an essential component of hTFIIIC1 and hTFIIIC1-like activities. Several forms of HsBdp1 are described. The 250-kDa form of...
Article
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The goal of this project was to understand the transcriptional regulation of the NFl gene. Specifically to further characterize TLF-mediated regulation and identify new factors that participate in the control of NFl regulation. In addition, an attempt was made to determine signaling pathways that affect NFl levels. We found that TLF(TRF2) activates...
Article
Full-text available
The human β‐globin gene is abundantly expressed specifically in adult erythroid cells. Stage‐specific transcription is regulated principally by promoter proximal cis‐regulatory elements. The basal promoter contains a non‐canonical TATA‐like motif as well as an initiator element. These two elements have been shown to interact with the TFII‐D complex...