Evidence map›Paper›PMID 32019900›Full record

ArticleScience signaling2020

Probing the mutational landscape of regulators of G protein signaling proteins in cancer.

Vincent DiGiacomo, Marcin Maziarz, Alex Luebbers, Jillian M Norris, Pandu Laksono, Mikel Garcia-Marcos

Open access · greenAbstract read
In one paragraph

Article in Science signaling, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 22 papers.

0numbers the graph read from it
0cells of the map it votes in
22citing papers in PubMed
1.7field-weighted citation impact, top 16% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

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.

2 · The registry

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.

3 · Its place in the literature

Who cites it

22 citing papers in PubMed, 26 citations in OpenAlex.

  1. Article
  2. Article
  3. Review
  4. Article
  5. G protein regulation by RGS proteins in the pathophysiology of dilated cardiomyopathy.American journal of physiology. Heart and circulatory physiology · 2025
    Review
  6. Article
  7. Review
  8. Article
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  11. Article
  12. Article
  13. Review
  14. Article
  15. ExploringMicrobial cell (Graz, Austria) · 2021
    Review
  16. Article
  17. Naturally occurring hotspot cancer mutations in GαThe Journal of biological chemistry · 2020
    Article
  18. Review
  19. Article
  20. Article
4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

6 authors at 1 institution in 1 country.

Vincent DiGiacomoDepartment of Biochemistry, Boston University School of Medicine, Boston, MA 02118, USA.ORCID 0000-0002-5055-8657
Marcin MaziarzDepartment of Biochemistry, Boston University School of Medicine, Boston, MA 02118, USA.
Alex LuebbersDepartment of Biochemistry, Boston University School of Medicine, Boston, MA 02118, USA.ORCID 0000-0001-7733-4250
Jillian M NorrisDepartment of Biochemistry, Boston University School of Medicine, Boston, MA 02118, USA.
Pandu LaksonoDepartment of Biochemistry, Boston University School of Medicine, Boston, MA 02118, USA.
Mikel Garcia-MarcosDepartment of Biochemistry, Boston University School of Medicine, Boston, MA 02118, USA. mgm1@bu.edu.ORCID 0000-0001-9513-4826
Boston University · US

Funding

Alternative mechanisms of signaling via trimeric G proteinsR01GM108733 · NIGMS · BOSTON UNIVERSITY MEDICAL CAMPUS · PI GARCIA-MARCOS, MIKEL · 2014 to 2018
$1.6M
Targeting of non-canonical G protein signaling with small moleculesR01GM130120 · NIGMS · BOSTON UNIVERSITY MEDICAL CAMPUS · PI GARCIA-MARCOS, MIKEL · 2018 to 2021
$1.4M
Next generation G protein activity biosensorsR21MH118745 · NIMH · BOSTON UNIVERSITY MEDICAL CAMPUS · PI GARCIA-MARCOS, MIKEL · 2018 to 2019
$454k
NIGMS NIH HHS R01 GM108733NIGMS NIH HHS R01 GM130120NIMH NIH HHS R21 MH118745
6 · The paper itself

Abstract

The advent of deep-sequencing techniques has revealed that mutations in G protein-coupled receptor (GPCR) signaling pathways in cancer are more prominent than was previously appreciated. An emergent theme is that cancer-associated mutations tend to cause enhanced GPCR pathway activation to favor oncogenicity. Regulators of G protein signaling (RGS) proteins are critical modulators of GPCR signaling that dampen the activity of heterotrimeric G proteins through their GTPase-accelerating protein (GAP) activity, which is conferred by a conserved domain dubbed the "RGS-box." Here, we developed an experimental pipeline to systematically assess the mutational landscape of RGS GAPs in cancer. A pan-cancer bioinformatics analysis of the 20 RGS domains with GAP activity revealed hundreds of low-frequency mutations spread throughout the conserved RGS domain structure with a slight enrichment at positions that interface with G proteins. We empirically tested multiple mutations representing all RGS GAP subfamilies and sampling both G protein interface and noninterface positions with a scalable, yeast-based assay. Last, a subset of mutants was validated using G protein activity biosensors in mammalian cells. Our findings reveal that a sizable fraction of RGS protein mutations leads to a loss of function through various mechanisms, including disruption of the G protein-binding interface, loss of protein stability, or allosteric effects on G protein coupling. Moreover, our results also validate a scalable pipeline for the rapid characterization of cancer-associated mutations in RGS proteins.

Indexed as

MutationSignal TransductionAmino Acid SequenceCarcinogenesisHEK293 CellsHeterotrimeric GTP-Binding ProteinsHumansModels, MolecularNeoplasmsProtein BindingProtein DomainsReceptors, G-Protein-CoupledRGS ProteinsSequence Homology, Amino AcidHeterotrimeric GTP-Binding ProteinsReceptors, G-Protein-CoupledRGS Proteins

Identifiers

PMID32019900
PMCPMC7079226
OpenAlexW3005198998

What OpenQuestion holds

Textmetadata
LicenceTDM
Read underepoch 390

Registered trials

None linked

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 OpenQuestion graph.