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Tag: "movement" at biology news

Researchers solve mystery of how nuclear pores duplicate before cell division

...emerged from one; however, the researchers tracked movement of only one dot, confirming their previous finding that pores formed from scratch. Additional research demonstrated that nuclear pore assemblies are added in a stepwise, coordinated process requiring components on both sides of the nuclear membrane....

New cellular flaw found in some virulent breast cancers

...tor. "We are going to see in the next five years a movement away from treating all tumors with the same drugs, and instead match specific drugs to tumors based on their molecular characteristics," said Sicinski, who is also an associate professor of pathology at Harvard Medical School. Cyclin D1 is one of a ...

Sea coral's trick helps scientists tag proteins

...h a flash of light and then to follow the object's movement over time," said Konstantin Lukyanov, whose group conducted the Dendra research in the lab of his brother, Sergey Lukyanov, a Howard Hughes Medical Institute (HHMI) international research scholar at the Shemyakin-Ovchinnikov Institute of Bioorganic C...

A new focus for the mechanism of nerve growth

...ectly see actin filament assembly, disassembly and movement in living cells. They used FSM to monitor actin dynamics in nerve cells treated with a new drug called blebbistatin, that relaxes non-muscle myosin II and effectively blocks processes such as cell division. "Past research has focused on how actin s...

Scientists discover basic defect in cystic fibrosis airway glands

...nnel regulator essential for proper salt and water movement across some epithelia. Currently, there are two essentially opposite explanations for the inability of the body to clear mucus from the airways in cystic fibrosis. The first is that the defective CFTR is unable to aid in fluid secretion in cystic f...

Forsyth scientists gain greater understanding of how embryos differentiate left from right

...tes utilize such ion flows in concert with ciliary movement and the function of pre-nervous neurotransmitters." The findings, to be published in the May 1 issue of Development (available online on April 18th) are key for understanding human development. According to Dr. Levin, this work shows a unified model...

Chemical guidance of T cells leads to immunologic memory and long-term immunity

...ly after a vaccination. The videos reveal that the movement of a specific type of immune cell known as a CD8+ T cell, also called a cytotoxic T cell, is not random as was previously thought, but instead is guided by chemical signals released from other cells. Scientists have long recognized the importance of...

Animal brains 'hard-wired' to recognize predator's foot movements, Queen's study suggests

...tested on whether they could tell the direction of movement when these cues were changed. Scrambling the dot... right or left. The researchers conclude that foot movement is an independent, important visual cue that another animal is nearby. "The observation that it is...

Movement of chromosome in nucleus visualized

...But scientists have had no way to track chromosome movement inside the nucleus or to determine whether the loc...e cell nucleus are capable of directed, long-range movement that depends on actin and myosin, the major molecular motor complex in the cytoplasm. Developing a ...

How the octopus forms an elbow

...uts an artificial constraint of sorts on the arm's movement and simplifies the otherwise complex control of movement that would be needed for the arm to fetch food from a distant point to the octopus's mouth. In the ...

Penguins waddle but they don't fall down, UH researchers say

...s somehow overcome this. They may have an elegant movement strategy for stability that we're unaware of." Kurz hopes that learning about the penguin's distinctive waddle will help those with walking challenges, such as the elderly, those with leg or foot injuries and toddlers learning to walk. The research...

A new way of looking at molecular motors

...sin--one of three molecular "motors" that produce movement within the cells of the body--has dramatically increased the amount of information available about these essential proteins, laying groundwork for development of treatments for conditions ranging from certain kinds of blindness and kidney disease to ...

Rewind, please: Nature paper shows that cell division is reversible

...ecognition for his work in the area of chromosomal movement and cell cycle control. ...

Not just the birds

...at island food webs are strongly subsidized by the movement of nutrients from adjacent productive waters onto less productive land." ...

Illegal trade is propelling rare turtle toward extinction, new report

...have been issued, nor transport permits issued for movement from the wild to point-of-export within Indonesia. ...

Finding a virus is not all bad news

Questions around the movement and population size changes of Kiwis, Tuatara and ... population changes, rate of evolution and rate of movement in the past hundred years," says Alexei, who is a lecturer in Computer Science and Bioinformatics. ...

Evolution mystery: Spider venom and bacteria share same toxin

... explanation." Lateral gene transfer refers to the movement of genes between the genomes of unrelated organisms. This contrasts with vertical transfer of genes from parent to offspring. Cordes and Binford found a common structural motif at the end of both toxic proteins that is not found in any other protein...

How to grow a bigger brain

... the cerebellum, a part of the brain that controls movement and body position, was significantly larger in fish reared with stones. Those fish also moved around less, perhaps using their yolk reserves more efficiently. Fish reared in the river had larger brains than either group of fish reared in tanks, but ...

Study fishes out new role for prostaglandins

...n cancer. Knowing how prostaglandins regulate cell movement in development can help cancer researchers determine how cancer cells spread throughout the body, or metastasize ?and how to stop the process. DuBois previously found that adding PGE2 to cultured cancer cells causes them to move much more rapidly. "...

Study reveals mass migration of mormon crickets driven by hunger, fear

...balism from the rear appears to push the crickets' movement as much as the need to find protein and salt pulls it, researchers say. The team's findings could lead to more environmentally friendly tactics for controlling large swarms of insects. ...

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