Is the complement activation product C3a a proinflammatory molecule? Re-evaluating the evidence and the myth

LG Coulthard, TM Woodruff - The Journal of Immunology, 2015 - journals.aai.org
The complement activation product C3a is often described as a proinflammatory mediator,
alongside its downstream cousin, C5a. However, emerging studies show that C3a has …

VGF as a biomarker and therapeutic target in neurodegenerative and psychiatric diseases

JP Quinn, SE Kandigian, BA Trombetta… - Brain …, 2021 - academic.oup.com
Neurosecretory protein VGF (non-acronymic) belongs to the granin family of neuropeptides.
VGF and VGF-derived peptides have been repeatedly identified in well-powered and well …

Multiscale causal networks identify VGF as a key regulator of Alzheimer's disease

ND Beckmann, WJ Lin, M Wang, AT Cohain… - Nature …, 2020 - nature.com
Though discovered over 100 years ago, the molecular foundation of sporadic Alzheimer's
disease (AD) remains elusive. To better characterize the complex nature of AD, we …

Complement C3aR depletion reverses HIF-1α–induced metabolic impairment and enhances microglial response to Aβ pathology

M Gedam, MM Comerota, NE Propson… - The Journal of …, 2023 - Am Soc Clin Investig
Microglia are the major cell type expressing complement C3a receptor (C3aR) in the brain.
Using a knockin mouse line in which a Td-tomato reporter is incorporated into the …

VGF-derived peptide TLQP-21 modulates microglial function through C3aR1 signaling pathways and reduces neuropathology in 5xFAD mice

F El Gaamouch, M Audrain, WJ Lin… - Molecular …, 2020 - Springer
Background Multiomic studies by several groups in the NIH Accelerating Medicines
Partnership for Alzheimer's Disease (AMP-AD) identified VGF as a major driver of …

VGF and its C-terminal peptide TLQP-62 regulate memory formation in hippocampus via a BDNF-TrkB-dependent mechanism

WJ Lin, C Jiang, M Sadahiro, O Bozdagi… - Journal of …, 2015 - Soc Neuroscience
Regulated expression and secretion of BDNF, which activates TrkB receptor signaling, is
known to play a critical role in cognition. Identification of additional modulators of cognitive …

The role of complement system in adipose tissue-related inflammation

SI Vlaicu, A Tatomir, D Boodhoo, S Vesa… - Immunologic …, 2016 - Springer
As the common factor linking adipose tissue to the metabolic context of obesity, insulin
resistance and atherosclerosis are associated with a low-grade chronic inflammatory status …

Complement in neurologic disease

NE Propson, M Gedam, H Zheng - Annual Review of Pathology …, 2021 - annualreviews.org
Classic innate immune signaling pathways provide most of the immune response in the
brain. This response activates many of the canonical signaling mechanisms identified in …

Neuropeptides in Alzheimer's disease: an update

C Petrella, MG Di Certo, C Barbato… - Current Alzheimer …, 2019 - ingentaconnect.com
Neuropeptides are small proteins broadly expressed throughout the central nervous system,
which act as neurotransmitters, neuromodulators and neuroregulators. Growing evidence …

Functional profiling of the G protein-coupled receptor C3aR1 reveals ligand-mediated biased agonism

P Rodriguez, LJ Laskowski, JP Pallais, HA Bock… - Journal of Biological …, 2024 - ASBMB
G protein-coupled receptors (GPCRs) are leading druggable targets for several medicines,
but many GPCRs are still untapped for their therapeutic potential due to poor understanding …