Neuroscience

Astrocyte dysfunction found to cause cognitive decline

People with dementia have protein build-up in astrocytes that may trigger abnormal antiviral activity and memory loss, according to a preclinical study by a team of Weill Cornell Medicine investigators.

Medical research

Study reveals new mode of triggering immune responses

Small proteins, called chemokines, that direct immune cells toward sites of infection can also form DNA-bound nanoparticles that can induce chronic, dysfunctional immune responses, according to a new study by researchers ...

Medical research

Scientists are deciphering the details of immune cell activation

Chemokine receptors, located at the surface of many immune cells, play an important role in cell function. Chemokines are small proteins that bind to these receptors and control the movement and behavior of white blood cells.

Cardiology

Synthetic 'mini' receptors block atherosclerosis

Atherosclerosis, a lipid-triggered chronic inflammatory disease of the arteries, is the main cause of strokes and heart attacks. An international team of researchers led by the Technical University of Munich (TUM) and the ...

Oncology & Cancer

New treatment strategy may thwart deadly brain tumors

Immune checkpoint inhibitors are important medications that boost the immune system's response against certain cancers; however, they tend to be ineffective against glioblastoma, the most deadly primary brain tumor in adults. ...

Inflammatory disorders

Researchers find piece in inflammatory disease puzzle

Inflammation is the process by which the body responds to injury or infection but when this process becomes out of control it can cause disease. Monash Biomedicine Discovery Institute (BDI) researchers, in collaboration with ...

Diseases, Conditions, Syndromes

Macaque model: MERS coronavirus settles deep in lungs

If rhesus macaques are good stand-ins for humans in studying Middle East respiratory syndrome coronavirus (MERS-CoV), the virus prefers the environment deep in the lungs, a finding that may help explain some features of the ...

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Chemokine

Chemokines (Greek -kinos, movement) are a family of small cytokines, or proteins secreted by cells. Their name is derived from their ability to induce directed chemotaxis in nearby responsive cells; they are chemotactic cytokines. Proteins are classified as chemokines according to shared structural characteristics such as small size (they are all approximately 8-10 kilodaltons in size), and the presence of four cysteine residues in conserved locations that are key to forming their 3-dimensional shape. However, these proteins have historically been known under several other names including the SIS family of cytokines, SIG family of cytokines, SCY family of cytokines, Platelet factor-4 superfamily or intercrines. Some chemokines are considered pro-inflammatory and can be induced during an immune response to recruit cells of the immune system to a site of infection, while others are considered homeostatic and are involved in controlling the migration of cells during normal processes of tissue maintenance or development. Chemokines are found in all vertebrates, some viruses and some bacteria, but none have been described for other invertebrates. These proteins exert their biological effects by interacting with G protein-linked transmembrane receptors called chemokine receptors, that are selectively found on the surfaces of their target cells.

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