Lecture

Telomere damage response

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In course

BIO-471: Cancer biology I

The course covers in detail molecular mechanisms of cancer development with emphasis on cell cycle control, genome stability, oncogenes, tumor suppressor genes, signaling pathways involved in cancer, genomic cancer analysis and rational cancer therapies. ...

Description

This lecture covers the telomere damage response, focusing on the role of POT1 and ATR kinases in regulating DNA repair and cell cycle arrest. It discusses the interplay between ATM and ATR kinases, shedding light on the mechanisms of DNA damage response at mammalian telomeres.

Instructors (3)

Joachim Lingner

PhD at the Biocenter, University of Basel 1989-1992 (Supervisor: Walter Keller). Postdoc at the Howard Hughes Medical Institute, University of Colorado at Boulder 1993-1997 (Supervisor: Thomas Cech). Junior group leader at ISREC 1997-2001. Senior group leader at ISREC since 2002. Associate Professor at EPFL 2005-2008. Full Professor at EPFL since 2009. Honors: START-fellowship from the Swiss National Science Foundation in 1997; Friedrich Miescher Prize from the Swiss Society of Biochemistry in 2002; EMBO member in 2005; ERC advanced investigator grant in 2008.

Viesturs Simanis

Viesturs Simanis was awarded a degree in Biochemistry from Imperial College London. He carried out his doctoral studies with David Lane at Imperial College, London University, and postdoctoral studies with Paul Nurse (London and Oxford). He has been a group leader at ISREC since 1988. In 2006 he was appointed Associate Professor at the EPFL School of Life Sciences

Elisa Oricchio

Expertise Cancer geneticsMouse modelsTherapyStem cellsLymphoma Teaching & PhD PhD Students Vamsi Krishna Polavarapu, Asli Ece Kasapoglu, Konstantina Georgakopoulou, Eleni Balli Past EPFL PhD Students Maria Christine Donaldson, Elena Battistello, Daniel Pereira Duarte, Frédérica Schyrr, Ruxandra-Andreea Lambuta, Aaron Simone Petruzzella, Jixing Zhong, Justine Epiney Courses Cancer biology I BIO-471 The course covers in detail molecular mechanisms of cancer development with emphasis on cell

Official source

Related concepts (31)

DNA repair

DNA repair is a collection of processes by which a cell identifies and corrects damage to the DNA molecules that encode its genome. In human cells, both normal metabolic activities and environmental factors such as radiation can cause DNA damage, resulting in tens of thousands of individual molecular lesions per cell per day. Many of these lesions cause structural damage to the DNA molecule and can alter or eliminate the cell's ability to transcribe the gene that the affected DNA encodes.

Telomere

A telomere (ˈtɛləmɪər,_ˈtiːlə-; ) is a region of repetitive nucleotide sequences associated with specialized proteins at the ends of linear chromosomes. Telomeres are a widespread genetic feature most commonly found in eukaryotes. In most, if not all species possessing them, they protect the terminal regions of chromosomal DNA from progressive degradation and ensure the integrity of linear chromosomes by preventing DNA repair systems from mistaking the very ends of the DNA strand for a double-strand break.

ATM serine/threonine kinase

ATM serine/threonine kinase or Ataxia-telangiectasia mutated, symbol ATM, is a serine/threonine protein kinase that is recruited and activated by DNA double-strand breaks. It phosphorylates several key proteins that initiate activation of the DNA damage checkpoint, leading to cell cycle arrest, DNA repair or apoptosis. Several of these targets, including p53, CHK2, BRCA1, NBS1 and H2AX are tumor suppressors. In 1995, the gene was discovered by Yosef Shiloh who named its product ATM since he found that its mutations are responsible for the disorder ataxia–telangiectasia.

Phosphoinositide 3-kinase

Phosphoinositide 3-kinases (PI3Ks), also called phosphatidylinositol 3-kinases, are a family of enzymes involved in cellular functions such as cell growth, proliferation, differentiation, motility, survival and intracellular trafficking, which in turn are involved in cancer. PI3Ks are a family of related intracellular signal transducer enzymes capable of phosphorylating the 3 position hydroxyl group of the inositol ring of phosphatidylinositol (PtdIns).

Cell cycle

The cell cycle, or cell-division cycle, is the series of events that take place in a cell that causes it to divide into two daughter cells. These events include the duplication of its DNA (DNA replication) and some of its organelles, and subsequently the partitioning of its cytoplasm, chromosomes and other components into two daughter cells in a process called cell division. In cells with nuclei (eukaryotes, i.e., animal, plant, fungal, and protist cells), the cell cycle is divided into two main stages: interphase and the mitotic (M) phase (including mitosis and cytokinesis).

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