Category Biology/Biotechnology

D-serine accelerates gastric tumor growth by suppressing killer T cells

D-serine Promotes Tumor Growth in Gastric Cancer
D-serine is a metabolic byproduct that aids immune evasion by gastric cancer tumors. It increases immunosuppressive macrophage activity and reduces the numbers and function of cytotoxic T cells. This aids tumor growth and provides resistance against immune checkpoint inhibitor therapy. Credit: Keio University Global Research Institute (KGRI)

One of the crucial steps in cancer proliferation is evading killer immune cells. Cancer cells use a variety of signaling molecules to evade the immune system. Immune checkpoint inhibitor (ICI) therapy interferes with some of these evasion tactics, improving the immune system’s ability to suppress tumors. However, the success of ICI therapy depends on the specific signals being secreted by the tumor.

Recent research has identified D-amino acids (...

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Engineered human neurons rebuild damaged spinal cord circuits

Engineered human neurons rebuild damaged spinal cord circuits
Lana Zholudeva, Ph.D., is a Gladstone Institutes investigator and first author of the new study. Credit: Gladstone Institutes

Spinal cord injuries affect an estimated 15 to 20 million people worldwide, often causing lasting impairments in movement, sensation and independence. Such injuries can be especially devastating when they occur at the level of the neck, where damaged spinal circuits disrupt signals that control the diaphragm, the main muscle used for breathing.

Despite advances in emergency care and rehabilitation, no approved therapies exist to rebuild the neurons and connections lost after a spinal cord injury. But new research from scientists at Gladstone Institutes offers hope for a regenerative treatment in the future.

The study, published in Science Translational Med...

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Soy lysolecithin counters high-salt diet-induced hypertension and cognitive impairment

Soy lysolecithin counters high-salt diet-induced hypertension and cognitive impairment
The study explores how a soy-derived lysolecithin, LPC70, mitigates HSD-induced hypertension and cognitive impairment, by regulating prostaglandin production and signaling mechanisms. Credit: Professor Akihiro Mouri, Fujita Health University, Japan

High-salt (HS) intake is a major global health concern, closely linked to hypertension and growing evidence of cognitive and emotional decline. Although salt is a routine part of daily diets, long-term overconsumption can negatively affect both the cardiovascular system and the central nervous system, underscoring the need for practical dietary strategies to mitigate these adverse health effects.

Prostaglandins (PGs) are lipid compounds derived from arachidonic acid (AA) that act as potent local hormones...

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Gut bacteria leave intestinal ‘memory,’ protecting against inflammation

Image generated by the editorial team using DALL·E for illustrative purposes.

New Northwestern Medicine research published in Nature Communications suggests that a metabolite produced by gut bacteria when they digest dietary fiber can leave a lasting molecular imprint on intestinal cells, promoting immune tolerance and protecting against inflammatory bowel disease-like conditions long after exposure ends.

Yingzi Cong, Ph.D., the Stanley Gradowski Professor of Gastroenterology and a professor of Microbiology-Immunology and Pathology, was the senior and co-corresponding author of the study.

Investigators describe the findings as evidence that beneficial microbial metabolites may be able to “train” the intestinal lining to maintain immune tolerance over time.

“Our laboratory has...

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