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Quantifying the global biodiversity of Proterozoic eukaryotes

1 year 10 months ago
Science, Volume 386, Issue 6728, December 2024.
Qing Tang, Wentao Zheng, Shuhan Zhang, Junxuan Fan, Leigh Anne Riedman, Xudong Hou, A. D. Muscente, Natalia Bykova, Peter M. Sadler, Xiangdong Wang, Feifei Zhang, Xunlai Yuan, Chuanming Zhou, Bin Wan, Ke Pang, Qing Ouyang, N. Ryan McKenzie, Guochun Zhao,…

Cellular RNA interacts with MAVS to promote antiviral signaling

1 year 10 months ago
Science, Volume 386, Issue 6728, December 2024.
Nandan S. Gokhale, Russell K. Sam, Kim Somfleth, Matthew G. Thompson, Daphnée M. Marciniak, Julian R. Smith, Emmanuelle Genoyer, Julie Eggenberger, Lan H. Chu, Moonhee Park, Steve Dvorkin, Andrew Oberst, Stacy M. Horner, Shao-En Ong, Michael Gale, Ram…

Biomarkers of Synaptic Degeneration in Alzheimer's Disease

1 year 10 months ago
Synapse has been considered a critical neuronal structure in the procession of Alzheimer's disease (AD), attacked by two pathological molecule aggregates (amyloid-β and phosphorylated tau) in the brain, disturbing synaptic homeostasis before disease manifestation and subsequently causing synaptic degeneration. Recently, evidence has emerged indicating that soluble oligomeric amyloid-β (AβO) and tau exert direct toxicity on synapses, causing synaptic damage. Synaptic degeneration is closely...
Qian Cheng

Boosting neuronal activity-driven mitochondrial DNA transcription improves cognition in aged mice

1 year 10 months ago
Deciphering the complex interplay between neuronal activity and mitochondrial function is pivotal in understanding brain aging, a multifaceted process marked by declines in synaptic function and mitochondrial performance. Here, we identified an age-dependent coupling between neuronal and synaptic excitation and mitochondrial DNA transcription (E-TC(mito)), which operates differently compared to classic excitation-transcription coupling in the nucleus (E-TC(nuc)). We demonstrated that E-TC(mito)...
Wenwen Li

A molecular glue for PRKN/parkin

1 year 10 months ago
Parkinson disease (PD) is a neurodegenerative disease characterized by the loss of dopaminergic neurons in the substantia nigra, primarily due to mitochondria dysfunction. PRKN (parkin RBR E3 ubiquitin protein ligase) and PINK1 (PTEN induced kinase 1) are linked to early-onset cases of PD and essential for the clearance of damaged mitochondria via selective mitochondrial autophagy (mitophagy). In a recent publication, we detail how a small molecule can activate PRKN mutants that are unable to be...
Véronique Sauvé