TY  - JOUR
A1  - Goméz-H, Laura
A1  - Felipe-Medina, Natalia
A1  - Sánchez-Martín, Manuel
A1  - Davies, Owen R.
A1  - Ramos, Isabel
A1  - García-Tuñón, Ignacio
A1  - de Rooij, Dirk G.
A1  - Dereli, Ihsan
A1  - Tóth, Attila
A1  - Barbero, José Luis
A1  - Benavente, Ricardo
A1  - Llano, Elena
A1  - Pendas, Alberto M.
T1  - C14ORF39/SIX6OS1 is a constituent of the synaptonemal complex and is essential for mouse fertility
JF  - Nature Communications
N2  - Meiotic recombination generates crossovers between homologous chromosomes that are essential for genome haploidization. The synaptonemal complex is a ‘zipper’-like protein assembly that synapses homologue pairs together and provides the structural framework for processing recombination sites into crossovers. Humans show individual differences in the number of crossovers generated across the genome. Recently, an anonymous gene variant in C14ORF39/SIX6OS1 was identified that influences the recombination rate in humans. Here we show that C14ORF39/SIX6OS1 encodes a component of the central element of the synaptonemal complex. Yeast two-hybrid analysis reveals that SIX6OS1 interacts with the well-established protein synaptonemal complex central element 1 (SYCE1). Mice lacking SIX6OS1 are defective in chromosome synapsis at meiotic prophase I, which provokes an arrest at the pachytene-like stage and results in infertility. In accordance with its role as a modifier of the human recombination rate, SIX6OS1 is essential for the appropriate processing of intermediate recombination nodules before crossover formation.
KW  - Chromosomes
KW  - Meiosis
KW  - Spermatogenesis
Y1  - 2016
U6  - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:bvb:20-opus-165907
VL  - 7
ER  - 
TY  - JOUR
A1  - Dunce, James M.
A1  - Milburn, Amy E.
A1  - Gurusaran, Manickam
A1  - da Cruz, Irene
A1  - Sen, Lee T.
A1  - Benavente, Ricardo
A1  - Davies, Owen R.
T1  - Structural basis of meiotic telomere attachment to the nuclear envelope by MAJIN-TERB2-TERB1
JF  - Nature Communications
N2  - Meiotic chromosomes undergo rapid prophase movements, which are thought to facilitate the formation of inter-homologue recombination intermediates that underlie synapsis, crossing over and segregation. The meiotic telomere complex (MAJIN, TERB1, TERB2) tethers telomere ends to the nuclear envelope and transmits cytoskeletal forces via the LINC complex to drive these rapid movements. Here, we report the molecular architecture of the meiotic telomere complex through the crystal structure of MAJIN-TERB2, together with light and X-ray scattering studies of wider complexes. The MAJIN-TERB2 2:2 hetero-tetramer binds strongly to DNA and is tethered through long flexible linkers to the inner nuclear membrane and two TRF1-binding 1:1 TERB2-TERB1 complexes. Our complementary structured illumination microscopy studies and biochemical findings reveal a telomere attachment mechanism in which MAJIN-TERB2-TERB1 recruits telomere-bound TRF1, which is then displaced during pachytene, allowing MAJIN-TERB2-TERB1 to bind telomeric DNA and form a mature attachment plate.
KW  - DNA
KW  - meiosis
KW  - proteins
KW  - super-resolution microscopy
KW  - X-ray crystallography
Y1  - 2018
U6  - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:bvb:20-opus-226416
VL  - 9
ER  - 
TY  - JOUR
A1  - Went, Molly
A1  - Sud, Amit
A1  - Speedy, Helen
A1  - Sunter, Nicola J.
A1  - Försti, Asta
A1  - Law, Philip J.
A1  - Johnson, David C.
A1  - Mirabella, Fabio
A1  - Holroyd, Amy
A1  - Li, Ni
A1  - Orlando, Giulia
A1  - Weinhold, Niels
A1  - van Duin, Mark
A1  - Chen, Bowang
A1  - Mitchell, Jonathan S.
A1  - Mansouri, Larry
A1  - Juliusson, Gunnar
A1  - Smedby, Karin E
A1  - Jayne, Sandrine
A1  - Majid, Aneela
A1  - Dearden, Claire
A1  - Allsup, David J.
A1  - Bailey, James R.
A1  - Pratt, Guy
A1  - Pepper, Chris
A1  - Fegan, Chris
A1  - Rosenquist, Richard
A1  - Kuiper, Rowan
A1  - Stephens, Owen W.
A1  - Bertsch, Uta
A1  - Broderick, Peter
A1  - Einsele, Hermann
A1  - Gregory, Walter M.
A1  - Hillengass, Jens
A1  - Hoffmann, Per
A1  - Jackson, Graham H.
A1  - Jöckel, Karl-Heinz
A1  - Nickel, Jolanta
A1  - Nöthen, Markus M.
A1  - da Silva Filho, Miguel Inacio
A1  - Thomsen, Hauke
A1  - Walker, Brian A.
A1  - Broyl, Annemiek
A1  - Davies, Faith E.
A1  - Hansson, Markus
A1  - Goldschmidt, Hartmut
A1  - Dyer, Martin J. S.
A1  - Kaiser, Martin
A1  - Sonneveld, Pieter
A1  - Morgan, Gareth J.
A1  - Hemminki, Kari
A1  - Nilsson, Björn
A1  - Catovsky, Daniel
A1  - Allan, James M.
A1  - Houlston, Richard S.
T1  - Genetic correlation between multiple myeloma and chronic lymphocytic leukaemia provides evidence for shared aetiology
JF  - Blood Cancer Journal
N2  - The clustering of different types of B-cell malignancies in families raises the possibility of shared aetiology. To examine this, we performed cross-trait linkage disequilibrium (LD)-score regression of multiple myeloma (MM) and chronic lymphocytic leukaemia (CLL) genome-wide association study (GWAS) data sets, totalling 11,734 cases and 29,468 controls. A significant genetic correlation between these two B-cell malignancies was shown (Rg = 0.4, P = 0.0046). Furthermore, four of the 45 known CLL risk loci were shown to associate with MM risk and five of the 23 known MM risk loci associate with CLL risk. By integrating eQTL, Hi-C and ChIP-seq data, we show that these pleiotropic risk loci are enriched for B-cell regulatory elements and implicate B-cell developmental genes. These data identify shared biological pathways influencing the development of CLL and, MM and further our understanding of the aetiological basis of these B-cell malignancies.
KW  - cancer genetics
KW  - myeloma
Y1  - 2018
U6  - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:bvb:20-opus-233627
VL  - 9
ER  -