免疫学
Study links monocyte “biological aging” in blood to emotional depression symptoms in women with and without HIV
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A study of 440 participants from the Women’s Interagency HIV Study found that accelerated epigenetic aging in monocytes—an immune cell type—tracked more closely with emotional and cognitive depression symptoms such as hopelessness and loss of pleasure than with physical symptoms like fatigue. The work, published in The Journals of Gerontology: Series A, adds evidence that cell-type-specific aging measures could contribute to future biological tools to complement symptom-based depression screening, though researchers say more validation is needed before clinical use.
New technologies are allowing researchers to peer into the nanoscale workings of the human immune system. Immunologist Daniel Davis highlighted these advances at WIRED Health. The insights could transform approaches to diseases like cancer.
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A 47-year-old woman bedridden with autoimmune hemolytic anemia, immune thrombocytopenia, and antiphospholipid syndrome has achieved complete remission after CAR-T cell therapy at University Hospital Erlangen in Germany. Treated by Fabian Müller after nine failed therapies, she recovered rapidly and remains healthy over a year later without medication—the first simultaneous treatment of multiple autoimmune diseases with this method.
A Texas A&M University team has developed a biodegradable microneedle patch that delivers interleukin‑4 directly to damaged heart tissue after a heart attack. In preclinical models, this targeted approach shifts immune cells into a healing mode and improves communication between heart muscle and blood vessel cells, while avoiding many of the side effects seen with systemic drug delivery.
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Researchers have identified unusual microscopic structures in the blood of long COVID patients, consisting of microclots intertwined with neutrophil extracellular traps, or NETs. These formations are more frequent, larger, and denser in affected individuals compared to healthy controls. The findings suggest potential mechanisms behind long COVID's persistent symptoms and open doors to new diagnostics and treatments.
The 2025 Nobel prize in physiology or medicine has been awarded to Mary Brunkow, Fred Ramsdell, and Shimon Sakaguchi for discovering a key immune cell that prevents the body from attacking itself. Their work revealed regulatory T-cells and the FOXP3 gene's role in controlling autoimmune responses. This breakthrough has opened new avenues for treating autoimmune diseases and cancers.
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Researchers have discovered that glioblastoma, the most aggressive form of brain cancer, extends beyond the brain by eroding the skull and altering the immune cells in skull marrow. This interaction fuels the cancer's progression and explains why current treatments often fail. The findings, published in Nature Neuroscience, suggest new strategies targeting both brain and bone.
Study links a distinct CD14+ monocyte state to fatigue and breathing symptoms in long COVID
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