PXD054635-1

PXD054635 is an original dataset announced via ProteomeXchange.

Title	Photoactivated adenylyl cyclase in cortical astrocytes promotes synaptic potentiation and reveals alterations in Huntington’s Disease
Description	Astrocytes are glial cells essential for neuronal plasticity. However, the role of astrocytic cAMP signalling in brain activity and function is still missing. We expressed DdPAC, a photoactivated adenylyl cyclase that increases cAMP upon red light, in cortical astrocytes to investigate its effects. We assessed synaptic transmission using multi-electrode arrays, and molecular changes through proteomic, phosphoproteomic, and metabolic analyses. We also measured brain hemodynamics and analysed motor behaviour in wild-type (WT) and R6/1 Huntington's disease (HD) mice. DdPAC stimulation in cortical astrocytes induced long-term synaptic potentiation in WT mice, which was PKA and NMDAR-dependent but Ca2+-independent. It also triggered PKA-signalling pathways and modulated synaptic and morphology-associated proteins. Further, cAMP signalling increased cortical blood flow and improved motor learning in WT mice but show differential responses in HD mice. Our results unravel the impact of cAMP signalling in astrocytes to synaptic to brain function, and highlight its alterations in HD.
HostingRepository	PRIDE
AnnounceDate	2025-09-18
AnnouncementXML	Submission_2025-09-18_00:34:18.409.xml
DigitalObjectIdentifier
ReviewLevel	Peer-reviewed dataset
DatasetOrigin	Original dataset
RepositorySupport	Unsupported dataset by repository
PrimarySubmitter	Enrique Santamaría
SpeciesList	scientific name: Mus musculus (Mouse); NCBI TaxID: 10090;
ModificationList	No PTMs are included in the dataset
Instrument	Orbitrap Exploris 480

Revision	Datetime	Status	ChangeLog Entry
0	2024-08-06 04:15:05	ID requested
⏵ 1	2025-09-18 00:34:18	announced

Dataset with its publication pending

submitter keyword: astrocytes, cAMP,Huntington’s Disease, proteomics, phosphoproteomics

Mercè Masana
contact affiliation	Dept. Biomedical Sciences, Institute of Neurosciences, School of Medicine and Health Sciences, Universitat de Barcelona, Barcelona, Spain. Institut d’Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS), Barcelona, Spain
contact email	mmasana@ub.edu
lab head
Enrique Santamaría
contact affiliation	Navarrabiomed
contact email	enrique.santamaria.martinez@navarra.es
dataset submitter

Dataset FTP location NOTE: Most web browsers have now discontinued native support for FTP access within the browser window. But you can usually install another FTP app (we recommend FileZilla) and configure your browser to launch the external application when you click on this FTP link. Or otherwise, launch an app that supports FTP (like FileZilla) and use this address: ftp://ftp.pride.ebi.ac.uk/pride/data/archive/2025/09/PXD054635

PRIDE project URI

• PRIDE
  1. PXD054635
     1. Label: PRIDE project
     2. Name: Photoactivated adenylyl cyclase in cortical astrocytes promotes synaptic potentiation and reveals alterations in Huntington’s Disease