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Latest Cold Spring Harbor Laboratory Stories

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2010-02-18 14:34:34

Scientists have known that newly acquired, short-term memories are often fleeting. But a new study in flies suggests that kind of forgetfulness doesn't just happen. Rather, an active process of erasing memories may in some ways be as important as the ability to lay down new memories, say researchers who report their findings in the February 19th issue of the journal Cell, a publication of Cell Press. "Learning activates the biochemical formation of memory," says Yi Zhong of Tsinghua...

2010-02-18 12:58:34

Fruit fly experiments show inhibiting and elevating Rac activity slows and speeds erasure Cold Spring Harbor, NY -- Memories that we have just acquired "“ a new phone number, or the name of a new acquaintance -- are more liable to be forgotten than memories we have held for some time. We know this from experience, but we are just learning about events inside and between nerve cells that account for the loss of short-term memory. Now, a neuroscience team led by a scientist at Cold Spring...

2010-02-01 18:39:09

Mapping DNase I hypersensitive sites has long been the standard method for identifying genetic regulatory elements such as promoters, enhancers, silencers, insulators, and locus control regions. Sequences that are nucleosome-depleted, presumably to provide access for transcription factors, are selectively digested by DNase I. Traditional low-throughput methods use Southern blots to then identify these hypersensitive sites. In the February issue of Cold Spring Harbor Protocols...

2010-01-22 15:48:44

Understanding and overcoming "Ëœthe Warburg Effect' A team of scientists led by Professor Adrian Krainer, Ph.D., of Cold Spring Harbor Laboratory has discovered molecular factors in cancer cells that boost the production of an enzyme that helps alter the cells' glucose metabolism.  The altered metabolic state, called the Warburg effect, promotes extremely rapid cell proliferation and tumor growth. Discovered eighty years ago by Nobel Prize-winning scientist Otto Warburg, this...

2010-01-14 13:26:39

The mutated gene, which causes Joubert Syndrome, is carried by 1 in 92 Ashkenazi Jews Two scientists from Cold Spring Harbor Laboratory (CSHL) are part of an international team that has discovered a genetic mutation that causes Joubert Syndrome. JBTS, as it is commonly called, is a devastating inherited neurological disease that is very rare in the general population but found relatively more often among Ashkenazi Jews. The study was published in collaboration with Dor Yeshorim, a non-profit...

2010-01-07 14:29:49

Scientists at Cold Spring Harbor Laboratory (CSHL) have discovered how a protein long known to be an essential activator of DNA replication actually triggers this process in cells. The protein, called DDK (for Ddf4-dependent protein kinase), is an enzyme that attaches phosphate molecules to other proteins to modify their activity. The CSHL team has found that DDK performs this operation, called phosphorylation, on a protein called Mcm4, specifically within a domain that acts as a built-in...

2010-01-05 21:37:13

Each cell inherits genes from its parent as well as epigenetic information "“ what amounts to an instruction manual that specifies which genes should be activated or "expressed," when and to what level. Cold Spring Harbor Laboratory (CSHL) scientist Chris Vakoc, M.D., Ph.D., and his team have now discovered how some of these epigenetic instructions get stably transferred from one generation of cells to the next. The scientists report that newly formed cells inherit the knowledge of...

2010-01-04 16:00:12

Metagenomics, the study of DNA isolated from samples of naturally occurring microbial populations, is rapidly growing. Improvements to cloning and sequencing techniques are allowing researchers to study microorganisms in environmental samples, and new knowledge of species interactions and community dynamics is emerging. The identification of microorganisms in these samples is of vital importance to interpreting the results of such studies. In the January issue of Cold Spring Harbor Protocols...

2010-01-04 13:19:53

A team of scientists at Cold Spring Harbor Laboratory (CSHL) has determined a hierarchical set of criteria that explain how the molecular precursors of gene-regulating small RNAs are sorted by the cellular machinery. Led by Benjamin Czech, a group working in the laboratory of CSHL Professor Gregory Hannon posed the question: can distinct patterns be observed in the process that unfolds when double-stranded RNAs enter the RNAi pathway? Shorthand for RNA interference, RNAi is a biological...

2009-12-02 11:26:54

Live cell imaging techniques are driving a revolution in biological research. Instead of viewing dead tissues and cells fixed at a particular stage of activity, scientists can now visualize dynamic changes as they happen, permitting a better understanding of biological processes. The revolution has been fueled by the implementation of genetically encoded fluorescent proteins, the subject of the 2008 Nobel Prize in Chemistry...


Word of the Day
kenspeckle
  • Having so marked an appearance as easily to be recognized.
This word may come from the Swedish 'kanspak,' quick at recognizing persons or things, or else from confusion with 'conspicuous.'