🧬 biology

SHED-Derived Exosomes Attenuate Alzheimer's Disease Pathology in iPSC-Derived Cerebral Organoid Model

This study demonstrates that SHED-derived exosomes attenuate Alzheimer's disease pathology and functional excitotoxicity in patient-derived 2D and 3D cerebral organoid models by delivering therapeutic miRNAs that modulate tau hyperphosphorylation and amyloid processing, thereby validating their potential as a multi-target biological therapy for dementia.

Leila Elyasi, Anna Chołoniewska, Eliza Lutostańska, Natalia Mierzwa, Dorota Sulejczak, Matylda Macias, Aleksandra Szybiń (…)2026-10-29
🧬 biology

Comparative Proteomic Analysis of Hypoxic Adaptation Reveals Conserved and Species-Specific Responses in Mycobacterium tuberculosis and Mycobacterium bovis

This study utilizes comparative proteomics to reveal that while *Mycobacterium tuberculosis* and *M. bovis* share conserved hypoxic adaptation strategies centered on lipid metabolism and the DosRST regulon, *M. bovis* exhibits distinct species-specific responses characterized by a broader upregulation of stress-related proteins and unique remodeling of nitrogen metabolism.

María Mercedes Bigi, Magdalena Portela, Laura Inés Klepp, Rosana Valeria Rocha, Elizabeth Andrea García, Crisitina Lourd (…)2026-10-29
🧬 biology

Phylogenomics reveals distinct evolutionary lineages of Japanese Cinnamomum species in the Nansei Islands

This study utilizes integrated chloroplast and nuclear genomic data to reveal that Japanese *Cinnamomum* species in the Nansei Islands comprise two distinct evolutionary lineages shaped by deep-sea barriers and long-term isolation, with one lineage diverging from Southeast Asian ancestors and another closely related to Taiwanese species.

Sayaka Iizasa, Naoko Anjiki, Ei'ichi Iizasa2026-10-29
🧬 biology

PIN1-p53 bifurcation dictates opposite cell fate decisions in Alzheimer’s disease and glioblastoma via distinct energy landscape topologies

By integrating single-cell transcriptomic data to map cell fate energy landscapes, this study reveals that the PIN1-p53 axis acts as a critical bifurcation node where its distinct topological regulation drives Alzheimer's disease toward neurodegeneration and glioblastoma toward uncontrolled proliferation, thereby mechanistically explaining their inverse comorbidity.

Jing Lyu2026-10-29
🧬 biology

The Aging Brain Matrix: Cross-Species Evidence Linking FREM3 to Brain and Cognitive Aging

This study provides the first cross-species causal evidence that the age-dependent gene FREM3 is essential for maintaining brain volume and cognitive function, demonstrating that its loss in mice leads to accelerated brain atrophy and cognitive decline, while reduced genetically regulated expression in humans similarly correlates with smaller brain surface area and poorer cognitive performance.

Kevan P. Clifford, Thomas D Prevot, Akiko Sumitomo, Srija Das, Yashika Bansal, Michael Marcotte, Runhao Zhou, Jonas Yeun (…)2026-10-29
🧬 biology

Localization-dependent effects of HSPA1A overexpression on skin inflammation and remodeling in a DNCB- induced mouse model of allergic dermatitis

This study demonstrates that in a DNCB-induced mouse model of allergic dermatitis, the localization of overexpressed HSPA1A dictates its impact on skin pathology, with extracellular accumulation promoting faster inflammation resolution and attenuated hyperplasia, while intracellular accumulation leads to persistent inflammation and pronounced tissue remodeling.

Nikita Maltsev, Evelina Khabarova, Egor Frolov, Valekh Ashyrov, Ksenia Pokidova, Egor Kuzmin, Sofia Dzivaeva, Gennadii P (…)2026-10-29
🧬 biology

Genome-wide Association Studies and Genomic Prediction for Resilience Traits to Aleutian Disease in Mink

This study elucidates the genetic architecture of Aleutian disease resilience in mink through genome-wide association studies identifying significant SNPs and genes, while comparing prediction methods to show that single-step genomic BLUP (ssGBLUP) offers the highest accuracy for immune response and feed variation traits, suggesting its future potential as the optimal approach for genomic selection in the industry.

Guoyu Hu, Duy Ngoc Do, Ghader Manafiazar, Alyson A. Kelvin, Graham Plastow, Mehdi Sargolzaei, Zhiquan Wang, Younes Miar2026-10-29
🧬 biology

Clinical and Molecular Characterization of a Rare KRAS p.Val14Ile Variant in Noonan Syndrome: Integrative Phenotypic Analysis and Molecular Dynamics Simulation

This study characterizes a rare de novo KRAS p.Val14Ile variant in Noonan syndrome by demonstrating its distinct clinical profile with reduced lymphatic and hematological abnormalities compared to other KRAS variants, and elucidating its pathogenic mechanism through molecular dynamics simulations that reveal altered GTP binding and conformational dynamics.

Xin Li, Sanhua Yang, Xin Liu, Chunqing Li, Xiaotian Wang, Shuping Wang, Wentao Yang2026-10-29