Cancer-fighting Gene Restrains ‘Jumping Genes’

Retrotransposons are “handcuffed” by the tumor suppressor gene
This illustration depicts how retrotransposons are “handcuffed” by the tumor suppressor gene p53. But when p53 is lost, these mobile elements can erupt. Credit: Study authors Amanda Jones and Bhavana Tiwari. Artwork by Angela Diehl.

Finding sheds light on why mutations of the gene p53 are associated with cancer and could lead to new diagnostics or treatments
About half of all tumors have mutations of the gene p53, normally responsible for warding off cancer. Now, UT Southwestern scientists have discovered a new role for p53 in its fight against tumors: preventing retrotransposons, or “jumping genes,” from hopping around the human genome. In cells with missing or mutated p53, the team found, retrotransposons move and multiply more than usual...

Read More

Positive Outlook Predicts Less Memory Decline

Hittner, E. F., Stephens, J. E., Turiano, N. A., Gerstorf, D., Lachman, M. E., & Haase, C. M. (2020). Positive affect is associated with less memory decline: Evidence from a 9-year longitudinal study. Psychological Science. Advance online publication. https//doi.org/10.1177/0956797620953883

A new study published in the journal Psychological Science found that people who feel enthusiastic and cheerful — what psychologists call “positive affect” — are less likely to experience memory decline as they age. This result adds to a growing body of research on positive affect’s role in healthy aging.

A team of researchers analyzed data from 991 middle-aged and older U.S...

Read More

Breakthrough Quantum-Dot Transistors create a Flexible Alternative to Conventional Electronics

By depositing gold (Au) and Indium (In) contacts, researchers create two crucial types of quantum dot transistors on the same substrate, opening the door to a host of innovative electronics.
By depositing gold (Au) and Indium (In) contacts, researchers create two crucial types of quantum dot transistors on the same substrate, opening the door to a host of innovative electronics.

Researchers at Los Alamos National Laboratory and their collaborators from the University of California, Irvine have created fundamental electronic building blocks out of tiny structures known as quantum dots and used them to assemble functional logic circuits. The innovation promises a cheaper and manufacturing-friendly approach to complex electronic devices that can be fabricated in a chemistry laboratory via simple, solution-based techniques, and offer long-sought components for a host of innovative devices.

“Potential applications of the new approach to electronic devices based on non-toxic ...

Read More

Juno Data Indicates ‘Sprites’ or ‘Elves’ Frolic in Jupiter’s Atmosphere


This illustration shows what a sprite could look like in Jupiter’s atmosphere. Named after a mischievous, quick-witted character in English folklore, sprites last for only a few milliseconds. They feature a central blob of light with long tendrils of light extending down toward the ground and upward. In Earth’s upper atmosphere, their interaction with nitrogen give sprites a reddish hue. At Jupiter, where the predominance of hydrogen in the upper atmosphere would likely give them a blue hue.

An instrument on NASA’s Juno mission spacecraft may have detected transient luminous events – bright flashes of light in the gas giant’s upper atmosphere.

New results from NASA’s Juno mission at Jupiter suggest that either “sprites” or “elves” could be dancing in the upper atmosphere of the sola...

Read More