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Tag: "destroy" at biology news

Virus uses tiny RNA to evade the immune system

...serves as a target for immune (T) cells, which can destroy infected cells and prevent the virus from spreading. Conveniently, the microRNA that targets T antigen is made late in the infectious cycle, just when T antigen is no longer essential for virus replication. Further experiments showed that cytotoxic ...

How HIV disables the cells' call for help

...into T cells and hijacking their DNA was enough to destroy the ability of these cells to call up immune support. But Institute scientists Prof. Yechiel Shai of the Biological Chemistry Department, Prof. Irun Cohen of the Immunology Department and graduate students Francisco Quintana and Doron Gerber thought...

From a Few Wild Ancestors, a Citrus Cornucopia

...e to natural disasters and other events that could destroy valuable genes,?Krueger says. This makes “ex situ?collections, like the Riverside citrus genebank, particularly critical—especially since many of the world’s wild citrus stands are at risk from encroaching industrialization. “Citrus’s area of origin...

Bacteria recognize antimicrobials, respond with counter-defenses

...the same molecules that the body sends out to help destroy salmonella inadvertently launch bacterial defenses. It is as if missiles armed, rather than demolished, the target. The body's antimicrobial peptides bind to an enzyme, PhoQ, that acts as a watchtower and interceptor near the surface of bacteria cell...

US Army plans to bulk-buy anthrax

..., or to test an "agent defeat" warhead designed to destroy stores of chemical and biological weapons. There are even fears that they could be used to determine how effectively anthrax is dispersed when released from bombs or crop-spraying aircraft. "I can definitely see them testing biological weapons delive...

New Lab Research May Help Those Deafened By Immune System Attack

...loud noise, trauma or medications, can diminish or destroy hearing. The U-M team has developed a monoclonal ...to the inner ear caused by antibodies to IESCA can destroy hearing. The KHRI-3 antibody creates a staining pattern that resembles a line of tiny wine glasses w...

Gene discovery sheds light on causes of rare disease, cancer

... Specialized cells engulf the invading microbe and destroy it. Scientists long believed that cells use a second process, called endocytosis, to deal with smaller molecules or viruses. In endocytsosis, a cell's outer membrane pinches inward around the target to form a pocket that's brought inside the cell, c...

Hide and seek: Researchers discover a new way for infectious bacteria to enter cells

... Specialized cells engulf the invading microbe and destroy it. Scientists long believed that cells use a second process, called endocytosis, to deal with smaller molecules or viruses. In endocytsosis, a cell's outer membrane pinches inward around the target to form a pocket that's brought inside the cell, c...

Secrets to antibody's success against West Nile Virus surprise scientists

...phages, the immune cells that normally consume and destroy any object that they find covered in antibodies. In effect, these tricks turn antibodies that should be death warrants into passes into cells where invaders can reproduce. Fremont cautions that this phenomenon has not been seen in West Nile virus,...

A molecule impedes the destruction of the 'Brucella' bacteria

...ructures containing cellular products necessary to destroy bacteria) as occurs in other micro-organisms. On the contrary, they reach certain compartments within the macrophage. Here the bacteria multiply and establish a chain of events that determine the illness. Brucellosis, the illness caused by these bac...

New type of rejection blocker protects kidneys after transplant

...eign and to signal production of T-cells poised to destroy it. A second, co-stimulatory signal is required before the T-cells attack the kidney. By blocking this second signal, belatacept prevents destruction of the kidney without suppressing the immune system's response to viruses and other pathogens. Bela...

Six previously blind patients detect light, motion, identify objects with retinal prostheses

...g a virtual vision-loss epidemic. Both AMD and RP destroy vision by annihilating the retinal cells that allow light to be translated into recognizable images. Second Sight's intraocular retinal prosthesis is taking the first step to replacing those cells with its device, a 4-by-4 grid of platinum electrode...

Major breakthrough in the treatment of cancers and infectious diseases

...nction of NK cells, and increase their capacity to destroy cancer and virus-infected cells. These medications could be used in combination with chemotherapy and radiotherapy to improve the effectiveness of anti-cancer treatments. Teams around the world have been trying without success for many years to devel...

Scripps research scientists solve structure of a critical innate immune system protein

...te blood cells, like macrophages, which engulf and destroy pathogens. The macrophages also fight the pathogens by producing large amounts of chemicals that induce inflammation and help the body clear the infection. One of the components of the innate immune system that scientists have been studying for the ...

Scientists discover global pattern of big fish diversity in open oceans

...p as many pieces of the puzzle as we can before we destroy it." ...

New understanding of cell movement may yield ways to brake cancer's spread

...per places to form organs, immune cells zero in to destroy pathogenic organisms, and cancer cells metastasize, spreading deadly disease through the body. Scientists studying these migrations didn't know how cells determined where to go. Until now. A Burnham Institute study has identified a fragment of a pro...

Active Vaccine Prevents Mice From Developing Prion Disease

...imal's immune system produces antibodies that will destroy them any time they appear in the body. Most vaccines in use today provide such active immunization. The prion vaccine developed at NYU would most likely first be used to protect livestock, since most prion infections occur in animals and are thought...

Pair of cancer genes found to drive both cell migration and division

...t down is by using PTEN. So if PTEN isn't there to destroy PIP3 at the furrow, the halves can't pull apart," says Chris Janetopoulos, Ph.D., a research associate in Devreotes's lab and first author on the paper. The cells' problems were eliminated when the researchers added the human PTEN gene to the mutated...

Natural Killers Could Lead to New Hepatitis Treatments

...s that would attract other inflammatory cells that destroy the invading microorganism and may also facilitate repair of the damage.?/p> In other experiments, the researchers explored the role of the CXCR6 receptor in the NKT cell's behavior. Receptors are protein sensors that nestle in the membranes of c...

Primates on the brink

...ve sale, and loggers, farmers, and land developers destroy their habitat. "More and more, mankind's closest living relatives are being cornered into shrinking areas of tropical forest," said CI President Russell A. Mittermeier, who also chairs the IUCN-SSC Primate Specialist Group. "This is especially true ...

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