About Us
Founded in 1944, the American Committee for the Weizmann Institute of Science develops philanthropic support for the Weizmann Institute in Israel, and advances its mission of science for the benefit of humanity.
https://www.weizmann-usa.org/news-media/in-the-news/the-coronavirus-unveiled/
Oct 09, 2020...
In February, as the new coronavirus swept across China and shut down entire cities, a scientist named Sai Li set out to paint its portrait.
At the time, the best pictures anyone had managed to take were low-resolution images, in which the virus looked like a barely discernible smudge.
Dr. Li, a structural biologist at Tsinghua University in Beijing, joined forces with virologists who were rearing the virus in a biosafety lab in the city of Hangzhou. Those researchers doused the viruses with chemicals to render them harmless and then sent them to Dr. Li.
Oct 27, 2020...
REHOVOT, ISRAEL—October 27, 2020—Acute liver failure is a devastating, rapidly progressing disease that results in death in 80% of cases, unless an emergency liver transplant is performed. In the developed world, its leading cause is a substantial overdose of acetaminophen, also known as paracetamol.
In a study published in Nature Medicine, researchers from the labs of Prof. Eran Elinav and Prof. Ido Amit in the Weizmann Institute of Science’s Department of Immunology have, using mouse models of acute liver failure, discovered three liver-cell subsets that orchestrate the development of this condition. The scientists also identified signals – from the gut microbiome as well as the diseased liver – that jointly activate these cells, and showed that selectively blocking the signals and depleting the microbiome led to marked improvement in liver function and prolonged survival in the mice. An analysis of liver tissue from human patients with acute liver failure revealed a molecular pattern strikingly similar to the one identified in mice in the study, raising hopes that the findings may in the future be translated into a treatment for humans.
Oct 27, 2020...
A new study from the Weizmann Institute of Science, published in Nature Medicine, has found new subsets of cells and signals from the gut microbiome and the diseased liver that contribute to acute liver failure.
The researchers, who work in the labs of Profs. Eran Elinav and Ido Amit in the Immunology Department, hope that this and other research findings will contribute to new treatments for the condition.
Nov 05, 2020... REHOVOT, ISRAEL—November 5, 2020—Peculiar hybrid structures called retrons that are half RNA, half single-strand DNA are found in many species of bacteria. Since their discovery around 35 years ago, researchers have learned how to use retrons for producing single strands of DNA in the lab – yet despite extensive research into the matter, the retrons’ function in the bacteria was unknown. Now, in a paper published in Cell, Weizmann Institute of Science researchers report that the longstanding mystery has been solved: Retrons are immune system “guards” that ensure the survival of the bacterial colony when it is infected by viruses.
https://www.weizmann-usa.org/news-media/in-the-news/the-cell-whisperer/
Nov 21, 2020... These are coronavirus days, and very few people can be seen in the narrow corridors of the Weizmann Institute of Science in Rehovot. We’re in the molecular immunology laboratory, located in one of the institute’s old buildings. It’s a simple place, the instruments are banal and dull. It looks like any lab in the world, one of thousands. But a miracle is occurring between the walls here. In the small details. The smallest.
Nov 01, 2020... Seven years ago, an understanding of nature inspired a revolutionary new technology, when researchers turned a defense system used by bacteria to thwart viruses into the gene-editing tool now known as CRISPR. But for another emerging gene editor the understanding has lagged the applications. For several years, researchers have been adapting retrons—mysterious complexes of DNA, RNA, and protein found in some bacteria—into a potentially powerful way to alter genomes of single cell organisms. Now, biology is catching up, as two groups report evidence that, like CRISPR, retrons are part of the bacterial immune arsenal, protecting the microbes from viruses called phages.
Dec 16, 2020... REHOVOT, ISRAEL—December 16, 2020—Cancers like melanoma are hard to treat, not least because they have a varied bag of tricks for defeating or evading treatments. Now, a combined research effort by the Weizmann Institute of Science, the Netherlands Cancer Institute in Amsterdam, and the University of Oslo shows exactly how tumors, in their fight to survive, will go so far as to starve themselves in order to keep the immune cells that would eradicate them from functioning. The work was published in Nature.
https://www.weizmann-usa.org/news-media/news-releases/bacteria-may-aid-anti-cancer-immune-response/
Mar 17, 2021... REHOVOT, ISRAEL—March 17, 2021—Cancer immunotherapy may get a boost from an unexpected direction: bacteria residing within tumor cells. In a new study published in Nature, researchers at the Weizmann Institute of Science and their collaborators have discovered that the immune system “sees” these bacteria and shown that they can be harnessed to provoke an immune reaction against the tumor. The study may also help clarify the connection between immunotherapy and the gut microbiome, explaining the findings of previous research showing that the microbiome affects the success of immunotherapy.
Mar 17, 2021...
Cancer cells present bacterial peptides on the outside of their walls, marking them as a foreign element to the body’s immune system, Weizmann Institute scientists report in a new article published in Nature.
This is crucial as while immunotherapy has been able to help melanoma cancer patients in roughly 40% of cases, the new findings could pave the road to more effective treatments and many lives saved in the future.
https://www.weizmann-usa.org/news-media/news-releases/the-triple-threat-of-coronavirus/
May 12, 2021... REHOVOT, ISRAEL—May 12, 2021—Severe symptoms of COVID-19, leading often to death, are thought to result from the patient’s own acute immune response rather than from damage inflicted directly by the virus. Intensive research efforts are therefore seeking to determine how the SARS-CoV-2 virus manages to mount an effective invasion while throwing the immune system off course. A new study, published in Nature, reveals a multipronged strategy that the virus employs to ensure its quick and efficient replication, while avoiding detection by the immune system. The study, conducted jointly by the research groups of Dr. Noam Stern-Ginossar at the Weizmann Institute of Science and Dr. Nir Paran and Dr. Tomer Israely of the Israel Institute for Biological, Chemical and Environmental Sciences, focused on understanding the molecular mechanisms at work during infection by SARS-CoV-2 at the cellular level.
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