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A lineage-specific selective autophagy receptor module mediates P-body turnover

2 months 1 week ago
Processing bodies (P-bodies) are conserved ribonucleoprotein granules central to RNA metabolism across eukaryotes. Although the mechanisms underlying their assembly are well understood, the pathways governing their selective turnover remain unclear. Here, we identify the conserved decapping proteins Enhancer of mRNA decapping 4 (EDC4) and decapping protein 1 (DCP1) as a selective autophagy receptor pair responsible for P-body turnover in the model plant Marchantia polymorpha. MpEDC4 engages ATG8...
Alibek Abdrakhmanov

DNA-PK-mediated phosphorylation of STAT6 establishes a non-canonical type 2 immunity axis to prevent macrophage senescence

2 months 1 week ago
Macrophage senescence drives inflammaging, a chronic, age-related inflammation. To date, the protective mechanisms against inflammaging are poorly defined. Here, we identify DNA-PK-mediated phosphorylation of murine STAT6 at serine 807 (Ser807) as a crucial post-translational modification for preventing macrophage senescence. Ser807 phosphorylation blocks STAT6 ubiquitination-mediated degradation and promotes STAT6 partnering with PU.1 to activate DNA repair genes. Macrophages lacking Ser807...
Zhao Zhou

Metabolic quiescence of naive-like memory T cells precedes and maintains antigen-specific T cell memory

2 months 1 week ago
Metabolic activity shapes cell fate but remains challenging to capture in vivo with high resolution. Here we performed longitudinal metabolic and phenotypic profiling of human antigen-specific CD8^(+) T cells after yellow fever vaccination using flow cytometry and single-cell RNA sequencing. As assessed by protein translation rates, CD8^(+) T cells upregulated glycolysis to fuel anabolic needs for proliferation but predominantly used oxidative phosphorylation for energy production during the...
Sina Frischholz

Disrupted drainage in the aging brain: Meningeal lymphatic decline as a convergent axis of vulnerability

2 months 1 week ago
The aging brain depends on coordinated fluid transport, immune surveillance, and clearance of metabolic byproducts to preserve cognitive and physiological homeostasis. While peripheral lymphatic decline is well established, growing evidence implicates brain-draining lymphatic pathways, particularly meningeal lymphatic vessels and their downstream drainage to deep cervical lymph nodes, as an aging-sensitive axis that intersects with neuroinflammation and neurodegenerative vulnerability. Here, we...
M Elyse Moore

iCLAP: an innovative method for integrable co-detection of low-abundance antigens with high-plex immunostaining

2 months 1 week ago
Multiplexed protein imaging enables spatial analysis of complex tissues, but detecting proteins expressed at low levels remains challenging, particularly in widely available formalin-fixed, paraffin-embedded (FFPE) specimens. Many biologically important regulators-including senescence markers, transcription factors, and secreted proteins-are therefore difficult to study in situ using existing high-plex methods. Here we show that integrable Co-detection of Low-Abundant Proteins (iCLAP) enables...
Fan Wu

Biological age and immunosenescence in Colombian centenarians

2 months 1 week ago
Biological aging and immunosenescence are central to longevity, yet their interplay in centenarians remains unclear. We conducted a cross-sectional study in 160 Colombian centenarians to examine associations between biological age (PhenoAge), immunosenescence and age-related clinical variables. Cytokine profiling (n = 114) and lymphocyte immunophenotyping (n = 42) were assessed. It was observed that better QoL and well-being were significantly associated with lower biological age, while...
Juan-Manuel Anaya

Aging increases visual dependency and disrupts sensory strategies in upright standing

2 months 1 week ago
Postural control depends on the integration of visual and proprioceptive inputs, yet how aging modifies this sensorimotor integration in upright standing remains unclear. We examined age-related differences in postural responses to visual and proprioceptive disturbances during upright standing by applying (i) bilateral Achilles or tibialis anterior tendon vibration and (ii) and simulated forward or backward self-motion in a virtual environment. Eighteen young [22.8 (1.6)yr] and eighteen old...
Christophe Barbanchon