macrophages tagged posts

Experimental cancer vaccine makes its own oxygen and gives T cells a boost

This cancer vaccine makes its own oxygen and gives T-cells a boost
This sponge-like cryogel cancer vaccine does double duty: training immune cells while generating oxygen to help them fight tumors. Credit: Matthew Modoono/Northeastern University

When it comes to priorities in life, oxygen tops the list. Humans can go weeks without food and days without water. Take away the ability to breathe, however, and the clock starts ticking within minutes as the brain begins shutting down. But the life-giving gas does even more heavy lifting than you might think.

The immune system, which battles cancer with the help of specialized fighters, such as T cells, relies on oxygen to mount its attack.

Now, Bouvé College of Health Sciences professor and director of the pharmaceutical and biomedical sciences graduate program Stephen Hatfield and his colleagues are ...

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New insight into the immune signals driving inflammation in multiple sclerosis

New insight into the immune signals driving inflammation in multiple sclerosis
Representative confocal microscopy image of a cross-section of the whole spinal column of an EAE animal co-transferred with control (red) and Tgfbr1-KO (green) cells. Credit: de la Rosa, Kendirli et al

Multiple sclerosis (MS) is a chronic neurological disease characterized by nerve damage and consequent impairments in vision, movement, balance and mental function. In MS, the immune system mistakenly starts attacking myelin, the protective sheath that surrounds axons (i.e., nerve fibers) in the brain, spinal cord and optic nerves.

Macrophages, immune cells responsible for detecting damaged cells, germs or other debris in the central nervous system (CNS) and eliminating them, have been found to play a key role in MS...

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First breathing ‘lung-on-chip’ developed using genetically identical cells

lung
Credit: Pixabay/CC0 Public Domain

Researchers at the Francis Crick Institute and AlveoliX have developed the first human lung-on-chip model using stem cells taken from only one person. These chips simulate breathing motions and lung disease in an individual, holding promise for testing treatments for infections like tuberculosis (TB) and delivering personalized medicine.

The research is published in the journal Science Advances.

Air sacs in the lungs called alveoli are the essential site of gas exchange and also an important barrier against inhaled viruses and bacteria that cause respiratory diseases like flu or TB.

Researchers have been working to recreate the battle between human cells and bacteria in the lab by building a lung-on-a-chip: small units of human lung on a plast...

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Rebalancing the Gut: How AI Solved a 25-Year Crohn’s Disease Mystery

Graphic of macrophages
Electron micrographs show how macrophages expressing girdin neutralize pathogens by fusing phagosomes (P) with the cell’s lysosomes (L) to form phagolysosomes (PL), compartments where pathogens and cellular debris are broken down (left). This process is crucial for maintaining cellular homeostasis. In the absence of girdin, this fusion fails, allowing pathogens to evade degradation and escape neutralization (right). (UC San Diego Health Sciences)

AI uncovers how a severed bond between two gut proteins sparks Crohn’s disease, and how restoring it could heal inflammation. UC San Diego researchers combined artificial intelligence with molecular biology to unravel how immune cells in the gut decide between inflammation and healing, a process gone awry in Crohn’s disease...

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