Cell Membrane News and Research

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Curcumin prolongs life and enhances activity of fruit flies with AD

Curcumin, a substance extracted from turmeric, prolongs life and enhances activity of fruit flies with a nervous disorder similar to Alzheimers. The study conducted at Link-ping University, indicates that it is the initial stages of fibril formation and fragments of the amyloid fibrils that are most toxic to neurons.

15 Feb 2012

Small molecules at cell's membrane enable cell movement

Cell biologists at Johns Hopkins have identified key steps in how certain molecules alter a cell's skeletal shape and drive the cell's movement.

3 Feb 2012

Researchers identify mechanism that leads to ischemia-reperfusion damage

For patients with incurable pulmonary conditions, a lung transplantation is the only available treatment option. However, suitable donor organs are scarce, and even getting them to prospective recipients is not easy. As Professor Alexander Dietrich of the Walther Straub Institute of Pharmacology and Toxicology at LMU explains, "An isolated lung which is no longer perfused with blood can become so severely damaged that it is no longer functional. This so-called ischemia-reperfusion injury is one of the major problems in the field of lung transplantation."

2 Feb 2012

Small molecules at the cell’s membrane enable cell movement

Cell biologists at Johns Hopkins have identified key steps in how certain molecules alter a cell’s skeletal shape and drive the cell’s movement.

31 Jan 2012

Researchers identify dual role of key player in human immune system

Northwestern University Feinberg School of Medicine researchers have identified a new and unusual role for a key player in the human immune system. A protein initially believed to regulate one routine function within the cell has proven vital for another critical step in the activation of the immune system.

30 Jan 2012

Scientists discover unexpected way in which a neutrophil prepares for battle

UCSF scientists have discovered the unexpected way in which a key cell of the immune system prepares for battle. The finding, they said, offers insight into the processes that take place within these cells and could lead to strategies for treating conditions from spinal cord injury to cancer.

20 Jan 2012

A reliable way to replicate α-synuclein aggregation on cell membranes in Parkinson's disease patients

The accumulation of α-synuclein, a small, negatively charged protein, in neural cells, is one of the hallmarks of Parkinson's disease. It has been suggested that oligomeric α-synuclein causes membranes to become permeable, or to form channels on the outer cell membrane.

19 Jan 2012

Scientists identify pathway that activates hepsin on the surface of breast tumor cells

Scientists from the University of Helsinki and from UCSF have exposed a cell pathway that breast tumor cells use to destruct local tissue neighborhood. Cancer cells may use this pathway to free themselves from mammary epithelial tissue architecture, to spread to surrounding tissues. The cell pathway, the researchers found, is a biochemical chain of events leading to activation of a protein-cleaving enzyme on the surface of the tumor cells.

18 Jan 2012

Scientists identify hepsin protein's role in breast cancer

Cancers rarely are deadly unless they evolve the ability to grow beyond the tissues in which they first arise. Normally, cells -- even early-stage tumor cells -- are tethered to scaffolding that helps to restrain any destructive tendencies. But scientists from the University of Helsinki, Finland, and from UCSF have identified a cleaver-wielding protein that frees some tumor cells, allowing them to further misbehave.

18 Jan 2012

UI chemists debunk misconception about amphotericin

With one simple experiment, University of Illinois chemists have debunked a widely held misconception about an often-prescribed drug.

17 Jan 2012

Infectious disease-fighting drugs could be designed to block pathogen's entry into cells

New research shows that infectious disease-fighting drugs could be designed to block a pathogen's entry into cells rather than to kill the bug itself.

11 Jan 2012

Researchers crack structure and function of malarial protein

A biology lab at Washington University has just cracked the structure and function of a protein that plays a key role in the life of a parasite that killed 655,000 people in 2010.

7 Jan 2012

Scientists identify molecular player critical to proper working of important health proteins

Half the drugs used today target a single class of proteins - and now scientists have identified an important molecular player critical to the proper workings of those proteins critical to our health.

28 Dec 2011

Tyrosine kinases play greater role in mitochondria than previously recognized

Cancer cells tend to take up more glucose than healthy cells, and researchers are increasingly interested in exploiting this tendency with drugs that target cancer cells' altered metabolism.

From Cell Signaling Technology 23 Dec 2011

Potential new strategy against bacteria with multi-drug resistant organisms

Vaccines with broader reach might be made by stimulating specialized immune cells to recognize foreign cell membrane proteins that are shared across bacterial species, say researchers from Children's Hospital of Pittsburgh of UPMC and the University of Pittsburgh School of Medicine in a report published online today in Immunity.

23 Dec 2011

Scientists discover mechanism by which TNFα stimulates tumor formation

An inflammation-promoting protein triggers deactivation of a tumor-suppressor that usually blocks cancer formation via the NOTCH signaling pathway, a team of researchers led by scientists at The University of Texas MD Anderson Cancer Center reports today in Molecular Cell.

23 Dec 2011

Short spiral-shaped proteins can efficiently deliver DNA segments to cells

Clinical gene therapy may be one step closer, thanks to a new twist on an old class of molecules. A group of University of Illinois researchers, led by professors Jianjun Cheng and Fei Wang, have demonstrated that short spiral-shaped proteins can efficiently deliver DNA segments to cells. The team published its work in the journal Angewandte Chemie.

16 Dec 2011

Scientists identify how cells reduce tissue damage from inflammation in ALI model

Researchers at the University of Illinois at Chicago College of Medicine have found in an animal model of acute lung injury a molecular mechanism that allows cells of the immune system to reduce tissue damage from inflammation.

16 Dec 2011

H2S plays critical role in signaling pathway linked to Alzheimer's and Parkinson's

Something rotten never smelled so sweet. This is what members of a team of scientists at Cold Spring Harbor Laboratory (CSHL) are telling one another as they discuss a new finding they did not expect to make. They have discovered that hydrogen sulfide (H2S) - the flammable, highly toxic gas that we usually associate with the smell of rotten eggs in landfills and sewers - plays an important role in the regulation of a signaling pathway implicated in biological malfunctions linked to Alzheimer's and Parkinson's diseases, among others.

14 Dec 2011

New study: Insulin signaling is altered in human pancreas

Insulin signaling is altered in the pancreas, a new study shows for the first time in humans. The errant signals disrupt both the number and quality of beta cells - the cells that produce insulin.

14 Dec 2011