Spotlight
Tumors Grow Faster Without Blood-Supply Promoting Molecule
Dense networks of blood vessels thought to spur cancer’s growth could actually hinder rather than promote tumor progression, according to a new study at the University of California, San Diego.
The findings partly explain why drugs designed to treat cancer by strangling its blood supply have been disappointing when used alone and why those treatments are more effective when combined with traditional chemotherapy.
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Events
January 22nd, 6:30 PM
Speaker James Nieh presents the second talk from the Nature Matters Lecture Series: Life and Death Among the Flowers: the Perils and Secret Language of Bees
Location: San Diego Natural History Museum
For more information, visit the Nature Matters Lecture Series Schedule
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Experts in science, medicine and technology weigh in on what the new president should do first
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UCSD Scientists Highlight Biofuels, Stem Cells Research at Biotech Convention
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Video
Biology and the FutureThe role of biological sciences in finding solutions to global health, environmental and economic issues. (12 min.)
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The enzyme HARP “rewinds” sections of the double-stranded DNA molecule that become unwound, like the tangled ribbons from a cassette tapeżżUC San Diego Biologists Discover a Motor Protein That Rewinds DNA
Two biologists at the University of California, San Diego have discovered the first of a new class of cellular motor proteins that “rewind” sections of the double-stranded DNA molecule that become unwound, like the tangled ribbons from a cassette tape, in “bubbles” that prevent critical genes from being expressed.
The discovery represents the first time scientists have identified a motor protein specifically designed to prevent the accumulation of bubbles of unwound DNA, which occurs when DNA strands become improperly unwound in certain locations along the molecule.
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The study found that species turnover in amphibians more closely follows changes in the environment when compared to birds.Credit: Lauren Buckley, UCSBStudy Confirms Amphibians’ Ability to Predict Changes in Biodiversity
Biologists have long suspected that amphibians, whose moist permeable skins make them susceptible to slight changes in the environment, might be good bellwethers for impending alterations in biodiversity during rapid climate change.
Now two University of California biologists have verified the predictive power of this sensitive group of animals in a global study of species turnover among amphibians and birds. The study appears this week in the advance online version of the journal Proceedings of the National Academy of Sciences.
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