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News Archive - Biological Sciences

Byproducts of ‘Junk DNA’ Implicated in Cancer Spread

August 15, 2018

UC San Diego biologists and their colleagues have revealed that enhancer RNAs play a significant role in cancer dissemination. The researchers found that eRNAs have a direct role in the activation of genes that are important for tumor development. This role is facilitated by the ability of eRNAs to directly interact with BRD4, a protein known as a cancer disseminator. BRD4 has been recognized as a promising cancer target.

Bacterial Communities Use Sophisticated Strategy to Communicate over Long Distances

July 25, 2018

A concept known as “percolation” is helping microbiologists at UC San Diego explain how communities of bacteria can effectively relay signals across long distances. Once regarded as simple clusters of microorganisms, communities of bacteria have been found to employ a strategy we use to brew coffee and extract oil from the sea. Percolation helps the microscopic community thrive and survive threats, such as chemical attacks from antibiotics.

Scientists ID Protein Exploited by Virus Ravaging West Africa

July 12, 2018

New research has uncovered a protein that enables the replication of arenaviruses, lethal pathogens spreading in West Africa. The research identified DDX3 as a key factor through its unexpected ability to dismantle normal human immune system defenses. The study may pave the way to new therapeutic treatments for arenaviruses and hemorrhagic fever.

UC San Diego Biologists Discover Process That Neutralizes Tumors

July 10, 2018

Researchers discovered an unexpected twist in the battle versus tumors. Tumors employ a protein called PD-L1 to blind T cells from functioning. PD-L1 protects tumors through a “molecular brake” known as PD-1. Researchers have found that some tumor cells display not only their PD-L1 weapon, but also the PD-1 brake, essentially becoming a neutralizing function. The unexpected mechanism could help determine whether a cancer patient will respond to immunotherapy.

Crystal Structure Reveals How Curcumin Impairs Cancer

July 9, 2018

Through x-ray crystallography and kinase-inhibitor specificity profiling, University of California San Diego School of Medicine researchers, in collaboration with researchers at Peking University and Zhejiang University, reveal that curcumin, a natural occurring chemical compound found in the spice turmeric, binds to the kinase enzyme dual-specificity tyrosine-regulated kinase 2 (DYRK2) at the atomic level. This previously unreported biochemical interaction of curcumin leads to inhibition of DYRK2 that impairs cell proliferation and reduces cancer burden.

New Dean Selected to Lead UC San Diego’s Division of Biological Sciences

July 9, 2018

UC San Diego has selected Kit Pogliano, a professor of molecular biology, as its new dean for the Division of Biological Sciences. Pogliano was selected after a national search and will begin her new appointment on Sept. 15, 2018. She is the fourth dean of the division and its first female leader. She will lead a renowned division that consistently ranks among the world’s best in biology research and education.

Turning A Phage

June 21, 2018

With microbial resistance to antibiotics growing into a major global health crisis, researchers at University of California San Diego School of Medicine, in collaboration with national research institutions and private industry, are leveraging hard-won expertise to exploit a natural viral enemy of pathogenic bacteria, creating North America’s first Center for Innovative Phage Applications and Therapeutics (IPATH).

Two UC San Diego Biologists Named Pew Scholars

June 14, 2018

The Pew Charitable Trusts has announced that UC San Diego Biological Sciences Assistant Professors Matthew Daugherty and Enfu Hui have been selected to the 2018 class of Pew Scholars in the Biomedical Sciences. Pew also announced that Diego Alvarez and Grisel Cruz Becerra, Biological Sciences postdoctoral researchers, have been named new Pew Latin American Fellows in the Biomedical Sciences.

A Sprinkle of Platinum Nanoparticles Onto Graphene Makes Brain Probes More Sensitive

June 14, 2018

Graphene electrodes could enable higher quality imaging of brain cell activity thanks to new research by a team of engineers and neuroscientists at the University of California San Diego. The researchers developed a technique, using platinum nanoparticles, to lower the impedance of graphene electrodes by 100 times while keeping them transparent. In tests on transgenic mice, the electrodes were able to record and image neuronal activity (calcium ion spikes) at both the macroscale and single cell levels.

SDSC Comet and Machine Learning Simulates H2O with “Unprecedented Accuracy”

June 13, 2018

A team led by researchers at UC San Diego’s Department of Chemistry and Biochemistry and SDSC has used machine learning techniques to develop models for simulations of water with “unprecedented accuracy.” Published online in The Journal of Chemical Physics, the research demonstrates how popular ML techniques can be used to construct predictive molecular models based on quantum mechanical reference data.
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