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Burkina Faso: Sankara family lawyers push for Compaoré’s extradition
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Burkina Faso: Sankara family lawyers push for Compaoré’s extradition

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Top Technical Advances in 2018

Top Technical Advances in 2018

The year’s most impressive achievements include ecology research via drone, mice with two dads, and the use of artificial intelligence to identify and monitor cancer cells.

Mice with same-sex parents

In research published in October in Cell Stem Cell, researchers from the Chinese Academy of Sciences for the first time created mice from two male parents. (Mice with two female parents had been created before, and in the same paper, the team reported improving their technique for doing so.) Making animals from same-sex parents is challenging because the DNA from sperm and egg cells comes with very different epigenetic imprinting. The process for generating the bipaternal pups was a complex one, involving deleting some of the imprinted regions, and the mice died soon after birth. “Bimaternal reproduction, or parthenogenesis, is quite common among vertebrates in the nature, such as amphibians, reptiles, and fish,” writes coauthor Baoyang Hu in an email to The Scientist. “However, successful reproduction from two males is very rare.”

Photo: The Scientist / A healthy adult bimaternal mouse with offspring of her own

Tumor-destroying nanorobots

Nanoscale, self-assembling, DNA-origami sheets with a drug on the inside that unfold when they encounter a tumor-specific protein successfully shrank breast tumors in mice, researchers at Arizona State University, the National Center for Nanoscience and Technology in China, and colleagues reported in Nature Biotechnology in February. Although it remains to be seen whether the drug-delivery system will translate to humans, the study’s authors are “looking at specific binding to tumor cells, which is basically the holy grail for . . . cancer therapy,” says the University of Tennessee’s Scott Lenaghan. 

Photo: The Scientist /Nanobots

AI for liquid biopsies

Artificial neural networks can process vast amounts of data and identify patterns that would likely elude a human doctor, making them strong candidates to sift through blood samples for signs of cancer. Multiple labs are now looking to artificial intelligence to help catch cancer early, and to identify features of individual patients’ cancers that indicate the suitability of particular treatments.

Photo: The Scientist / Liquid biopsy AI

Virtual test animals

Computing power was central to another of this year’s methodological innovations, a program that can predict the results of animal-based toxicology screenings. Researchers led by Thomas Hartung of Johns Hopkins University developed the tool using data from thousands of toxicology tests, and found that it accurately predicted the results of such screenings 87 percent of the time. By comparison, repeating the assays themselves only reproduced the original results 81 percent of the time. The authors hope the software can reduce the use of experimental animals. “This won’t be the end of all animal testing,” Hartung tells The Scientist. “But this is an important step to take the bite out of it.”

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