Evidence map›Paper›PMID 31956834›Full record

ArticleACS omega2020

PDE6D Inhibitors with a New Design Principle Selectively Block K-Ras Activity.

Farid A Siddiqui, Catharina Alam, Petja Rosenqvist, Mikko Ora, Ahmed Sabt, Ganesh Babu Manoharan, Lakshman Bindu, Sunday Okutachi, Marie Catillon, Troy Taylor and 6 more

Open access · goldAbstract read
In one paragraph

Article in ACS omega, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 29 papers.

0numbers the graph read from it
0cells of the map it votes in
29citing papers in PubMed
1.6field-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

29 citing papers in PubMed, 46 citations in OpenAlex.

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  8. Development of a Genetically Encoded and Potent PDE6D Inhibitor.Chembiochem : a European journal of chemical biology · 2025
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  9. Review
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  18. Development of PD3 and PD3-B for PDEδ inhibition to modulate KRAS activity.Journal of enzyme inhibition and medicinal chemistry · 2022
    Article
  19. Article
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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

16 authors at 5 institutions in 4 countries.

Farid A SiddiquiTurku Bioscience Centre, University of Turku and Åbo Akademi University, 20520 Turku, Finland.
Catharina AlamTurku Bioscience Centre, University of Turku and Åbo Akademi University, 20520 Turku, Finland.
Petja RosenqvistDepartment of Chemistry, University of Turku, 20014 Turku, Finland.
Mikko OraDepartment of Chemistry, University of Turku, 20014 Turku, Finland.
Ahmed SabtDepartment of Chemistry, University of Turku, 20014 Turku, Finland.
Ganesh Babu ManoharanCancer Cell Biology and Drug Discovery Group, Life Sciences Research Unit, University of Luxembourg, 4362 Esch-sur-Alzette, Luxembourg.
Lakshman BinduNCI RAS Initiative, Cancer Research Technology Program, Frederick National Laboratory for Cancer Research, 21702 Frederick, Maryland, United States.
Sunday OkutachiCancer Cell Biology and Drug Discovery Group, Life Sciences Research Unit, University of Luxembourg, 4362 Esch-sur-Alzette, Luxembourg.
Marie CatillonCancer Cell Biology and Drug Discovery Group, Life Sciences Research Unit, University of Luxembourg, 4362 Esch-sur-Alzette, Luxembourg.
Troy TaylorNCI RAS Initiative, Cancer Research Technology Program, Frederick National Laboratory for Cancer Research, 21702 Frederick, Maryland, United States.
Omaima M AbdelhafezChemistry of Natural Compounds Department, National Research Centre, Dokki, 12622 Giza, Egypt.
Harri LönnbergDepartment of Chemistry, University of Turku, 20014 Turku, Finland.
Andrew G StephenNCI RAS Initiative, Cancer Research Technology Program, Frederick National Laboratory for Cancer Research, 21702 Frederick, Maryland, United States.
Anastassios C PapageorgiouTurku Bioscience Centre, University of Turku and Åbo Akademi University, 20520 Turku, Finland.
Pasi VirtaDepartment of Chemistry, University of Turku, 20014 Turku, Finland.
Daniel AbankwaTurku Bioscience Centre, University of Turku and Åbo Akademi University, 20520 Turku, Finland.
University of Turku · FIÅbo Akademi University · FIFrederick National Laboratory for Cancer Research · USUniversity of Luxembourg · LUNational Research Centre · EG

Funding

CCR NIH HHS HHSN261200800001CNCI NIH HHS HHSN261200800001E
6 · The paper itself

Abstract

The trafficking chaperone PDE6D (also referred to as PDEδ) has been nominated as a surrogate target for K-Ras4B (hereafter K-Ras). Arl2-assisted unloading of K-Ras from PDE6D in the perinuclear area is significant for correct K-Ras localization and therefore activity. However, the unloading mechanism also leads to the undesired ejection of PDE6D inhibitors. To counteract ejection, others have recently optimized inhibitors for picomolar affinities; however, cell penetration generally seems to remain an issue. To increase resilience against ejection, we engineered a "chemical spring" into prenyl-binding pocket inhibitors of PDE6D. Furthermore, cell penetration was improved by attaching a cell-penetration group, allowing us to arrive at micromolar in cellulo potencies in the first generation. Our model compounds, Deltaflexin-1 and -2, selectively disrupt K-Ras, but not H-Ras membrane organization. This selectivity profile is reflected in the antiproliferative activity on colorectal and breast cancer cells, as well as the ability to block stemness traits of lung and breast cancer cells. While our current model compounds still have a low in vitro potency, we expect that our modular and simple inhibitor redesign could significantly advance the development of pharmacologically more potent compounds against PDE6D and related targets, such as UNC119 in the future.

Identifiers

PMID31956834
PMCPMC6964506
OpenAlexW2994739605

What OpenQuestion holds

Textmetadata
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.