MINISTER CRITICISED ON COD QUOTAS
The UK fisheries apportion is wrong to call for an enlarge in cod quotas, contend scientists as well as charge groups.
MAN-SIZED SEA SCORPION CLAW FOUND
A beast creepy-crawly: the measureless fossilised scratch of the 2. 5m-long sea scorpion is described by scientists.
ASTRONAUTS AIM FOR TIGHT DEADLINE
Astronauts lift out a spacewalk as they competition to fit out a ISS in time for a attainment of a subsequent convey.
GENOME-WIDE PROFILING OF DNA METHYLATION REVEALS A CLASS OF NORMALLY METHYLATED CPG ISLAND PROMOTERS.
PLoS Genet, Vol. 3, No. 10. (26 October 2007), pp. 2023-2036.The role of CpG island methylation in normal development and cell differentiation is of keen interest, but remains poorly understood. We performed comprehensive DNA methylation profiling of promoter regions in normal peripheral blood by methylated CpG island amplification in combination with microarrays. This technique allowed us to simultaneously determine the methylation status of 6,177 genes, 92% of which include dense CpG islands. Among these 5,549 autosomal genes with dense CpG island promoters, we have identified 4.0% genes that are nearly completely methylated in normal blood, providing another exception to the general rule that CpG island methylation in normal tissue is limited to X inactivation and imprinted genes. We examined seven genes in detail, including ANKRD30A, FLJ40201, INSL6, SOHLH2, FTMT, C12orf12, and DPPA5. Dense promoter CpG island methylation and gene silencing were found in normal tissues studied except testis and sperm. In both tissues, bisulfite cloning and sequencing identified cells carrying unmethylated alleles. Interestingly, hypomethylation of several genes was associated with gene activation in cancer. Furthermore, reactivation of silenced genes could be induced after treatment with a DNA demethylating agent or in a cell line lacking DNMT1 and/or DNMT3b. Sequence analysis identified five motifs significantly enriched in this class of genes, suggesting that cis-regulatory elements may facilitate preferential methylation at these promoter CpG islands. We have identified a group of non-X-linked bona fide promoter CpG islands that are densely methylated in normal somatic tissues, escape methylation in germline cells, and for which DNA methylation is a primary mechanism of tissue-specific gene silencing.
L Shen, Y Kondo, Y Guo, J Zhang, L Zhang, S Ahmed, J Shu, X Chen, RA Waterland, JP Issa
SKIN TRANSFORMED INTO STEM CELLS
Scientists reprogramme tellurian skin cells to impersonate rudimentary branch cells - earnest the series in healing investigate.
POWERING UP FOR HYDROGEN
It is time to spin the speculation of the tellurian hydrogen manage to buy in the being since hoary fuels have been not starting to final perpetually.
FISH DUMPING ‘WILL RUIN INDUSTRY’
The fishing attention says it faces hurt unless manners that see millions of cod being thrown divided, passed, shift.
