🧬 biology

The study of O-GalNAcylation repair on MUC2 and E-cadherin of intestinal epithelial cells damaged by lipopolysaccharides

This study reveals that LPS-induced intestinal epithelial damage disrupts MUC2 O-GalNAcylation and adherens junction integrity, but GalNT3 overexpression restores long-chain O-glycans on MUC2, stabilizing E-cadherin and calcium homeostasis to repair the mucosal barrier and mitigate LPS translocation.

Aohang Yu, Chihao Wang, Chaojie Chen, Yumeng Wang, Chenchen Wu2026-07-15
🧬 biology

Astrocytic lactate shuttle disruption and the energy-starved lysosome in Alzheimer's disease

This study proposes that Alzheimer's disease lysosomal dysfunction stems not from structural pump failure but from an "energy-starved lysosome" state caused by the disruption of the astrocyte–neuron lactate shuttle, where declining astrocytic lactate export (MCT4) creates a cross-cellular energy deficit that impairs neuronal V-ATPase activity despite preserved pump abundance.

YoungOuk Kim¹, WooMyung Heo¹, Se Jin Park², YoungChul Kim¹, Ye Eun Cho²2026-07-15
🧬 biology

Extracellular SPON2 Protein Inhibits Metabolism by Blocking Glutamine Uptake to Coordinate Mammary Morphogenesis and Cancer Suppression

This study identifies the basal-derived extracellular protein SPON2 as a metabolic checkpoint that suppresses mammary morphogenesis and breast cancer by directly binding the glutamine transporter SLC38A1 to restrict nutrient uptake, thereby inhibiting mTORC1 signaling and epithelial expansion.

Zhixuan Deng, Yao-Hui He, Rongze Ma, Yuting Li, Yiting Li, Jing Chen, Liwen Wang, Pengfei Lu2026-07-15
🧬 biology

Pre-existing Immunity to H1N1 Influenza Virus Improves Antibody Response to Vaccination through Germinal Center Regulation

This study demonstrates that pre-existing immunity to H1N1 influenza enhances antibody responses to seasonal vaccination through germinal center regulation, resulting in superior protection against pandemic H1N1 challenge compared to naive hosts.

Alyson Kelvin, Opeyemi Oludada, Magen Francis, Anuj Kumar, Gustavo Sganzerla Martinez, Mary Foley, Reema Singh, Angela R (…)2026-07-15
🧬 biology

The effect of high-intensity interval training and vitamin D3 supplementation on fructose-induced liver inflammation in male Sprague-Dawley rats

This study demonstrates that in male Sprague-Dawley rats fed a high-fructose diet, the combined intervention of High-Intensity Interval Training (HIIT) and Vitamin D3 supplementation is more effective than either treatment alone in reducing liver inflammation, fat accumulation, and fibrosis while improving metabolic markers.

Behnaz Shokri, Hamid Mohebbi, Javad Mehrabani2026-07-15
🧬 biology

Two independent classes of allosteric transcription factors expand the regulatory landscape of bacterial guanidine metabolism

This study identifies two independent classes of allosteric transcription factors, GdnR and a ribbon–helix–helix superfamily protein, that function as guanidine-responsive repressors to regulate bacterial guanidine metabolism, thereby expanding the known regulatory mechanisms and ecological significance of this nitrogen cycle pathway.

Jörg Hartig, Malte Sinn, Antonia Herman, Isabel Martin, Amelie Theisen, Olga Mayans2026-07-15
🧬 biology

Scary and nasty beasts from early childhood to adolescence: cross-sectional developmental study of fear and disgust elicited by various animals

This cross-sectional study of 344 children reveals that while fear responses to animals undergo significant developmental recalibration based on perceived danger (e.g., spiders rising in fear rankings with age), disgust responses to parasites and worm-like creatures remain remarkably stable and adult-like from preschool onward, suggesting that animal disgust is more deeply biologically prepared than fear.

Helena Vaňková, Markéta Janovcová, Jakub Polák, Šárka Peterková, Kristýna Sedláčková, Daniel Frynta, Eva Landová2026-07-15
🧬 biology

Reproductive seasonality and partial semelparity in a population of  Gracilinanus agilis in the Brazilian Caatinga

This study provides the first evidence that the agile gracile opossum (*Gracilinanus agilis*) in the Brazilian Caatinga exhibits partial semelparity driven by reproductive seasonality rather than rainfall, characterized by high post-reproductive mortality and anticipatory maturation into breeding condition.

Viviane Morlanes, Simone Santoro, Carlos Rouco, cecilia Calabuig2026-07-15
🧬 biology

Open 3D-CT Vision-Language Models Do Not Clear a Pre-Registered Biomarker Gate Under Zero-Shot Prompting at n = 96 NSCLC-Radiogenomics

This study demonstrates that while open 3D-CT vision-language model features contain decodable EGFR mutation signals in NSCLC, zero-shot prompting fails to access this information due to a geometric misalignment between the text-prompt axis and the discriminative feature direction, a limitation overcome only by supervised probing.

Adil Karim, Amine Berquedich, El Habib Benlahmar, Sanaa Elfilali, Ahmed Zellou2026-07-15