ArticleiScience2025
Conserved LIR-specific interaction of Sigma-1 receptor and GABARAP.
Article in iScience, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 3 papers, 1 of them a synthesis that pooled it.
What it found
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The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
The trial behind it
Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.
Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.
Who cites it
3 citing papers in PubMed, 1 synthesis or guideline pooled it.
- Sigma-1 Receptor Ligand Blarcamesine (ANAVEX 2-73) for Alzheimer's Disease: A Systematic Review.CNS drugs · 2026Pooled it
- The Role of Sigmar1 in Autophagy Regulation and Disease Therapy.International journal of molecular sciences · 2026Review
- The sigma-1 receptor as a neurohomeostatic decision hub for GABARAP-mediated receptor trafficking and macroautophagy.Frontiers in molecular biosciences · 2025Article
Corrections and comments
PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.
Authors and funding
8 authors.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Among its various functions, the sigma-1 receptor (σ1R) has been reported to modulate macroautophagy. It is currently unknown how this activity is mediated. We phylogenetically, structurally, and biochemically analyzed σ1R regarding its function in autophagy. We identified several putative LC3-interacting-regions (LIRs) that may mediate interactions with ATG8 proteins, which are known to promote autophagosome biogenesis, autophagic cargo reception, and lysosome fusion. Human σ1R comprises a LIR motif (hLIR5) typical for interaction with a specific ATG8, GABARAP. Biochemically, we uncovered a GABARAP-σ1R interaction depending on this motif via peptide array analysis and confirmed this via immunoprecipitation, co-localization, and proximity ligation assays. In addition, we verified a LIR-dependent presence of σ1R in isolated native autophagic vesicles. Excitingly, two point mutations within this LIR that have previously been reported to be associated with autosomal-recessive distal spinal muscular atrophy lack the ability to interact with GABARAP, highlighting the physiological relevance of the hLIR5-mediated σ1R-GABARAP interaction.
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What Socratic holds
Registered trials
Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the Socratic graph.