Evidence map›Paper›PMID 29497895›Full record

ArticleInvestigational new drugs2018

Preclinical investigation of a potent geranylgeranyl diphosphate synthase inhibitor.

Staci L Haney, Yashpal S Chhonker, Michelle L Varney, Geoffrey Talmon, Daryl J Murry, Sarah A Holstein

Open access · greenAbstract read
In one paragraph

Article in Investigational new drugs, 2018. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 17 papers.

0numbers the graph read from it
0cells of the map it votes in
17citing papers in PubMed
1.1field-weighted citation impact, top 23% 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

17 citing papers in PubMed, 21 citations in OpenAlex.

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  14. ω-Hydroxy isoprenoid bisphosphonates as linkable GGDPS inhibitors.Bioorganic & medicinal chemistry letters · 2019
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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

6 authors at 1 institution in 1 country.

Staci L HaneyDepartment of Internal Medicine, University of Nebraska Medical Center, 986840 Nebraska Medical Center, Omaha, NE, 68198, USA.
Yashpal S ChhonkerDepartment of Pharmacy Practice, University of Nebraska Medical Center, Omaha, NE, USA.
Michelle L VarneyDepartment of Internal Medicine, University of Nebraska Medical Center, 986840 Nebraska Medical Center, Omaha, NE, 68198, USA.
Geoffrey TalmonDepartment of Pathology and Microbiology, University of Nebraska Medical Center, Omaha, NE, USA.
Daryl J MurryDepartment of Pharmacy Practice, University of Nebraska Medical Center, Omaha, NE, USA.
Sarah A HolsteinDepartment of Internal Medicine, University of Nebraska Medical Center, 986840 Nebraska Medical Center, Omaha, NE, 68198, USA. sarah.holstein@unmc.edu.
University of Nebraska Medical Center · US

Funding

UNMC/EPPLEY CANCER CENTER SUPPORT GRANTP30CA036727 · NCI · UNIVERSITY OF NEBRASKA MEDICAL CENTER · PI James Eudy · 1985 to 2026
$55.0M
Rab Geranylgeranylation: a Novel Therapeutic Target in Multiple MyelomaR01CA172070 · NCI · UNIVERSITY OF NEBRASKA MEDICAL CENTER · PI HOLSTEIN, SARAH A · 2013 to 2016
$1.3M
NCI NIH HHS P30 CA036727NCI NIH HHS R01 CA172070
6 · The paper itself

Abstract

Geranylgeranyl diphosphate synthase (GGDPS) is the enzyme in the isoprenoid biosynthesis pathway that catalyzes the synthesis of the 20-carbon isoprenoid GGPP, which serves as the isoprenoid donor for protein geranylgeranylation reactions. Rab proteins mediate vesicle trafficking within the cell and their activity is dependent on geranylgeranylation. Our prior work has demonstrated that agents that disrupt Rab geranylgeranylation disrupt monoclonal protein trafficking in myeloma cells, resulting in induction of the unfolded protein response pathway and apoptosis. VSW1198 is a potent GGDPS inhibitor with measurable cellular activity at concentrations as low as 30 nM. Due to its potent activity against myeloma cells in vitro, we were interested in evaluating the toxicology profile, pharmacokinetic (PK) profile, tissue distribution pattern and metabolic stability of VSW1198 in preparation for in vivo efficacy studies. Single dose testing via IV administration in CD-1 mice revealed a maximum tolerated dose of 0.5 mg/kg. Doses ≥1 mg/kg resulted in liver toxicity that peaked around 6-7 days post-injection. Disruption of protein geranylgeranylation following repeat dosing of VSW1198 was confirmed via immunoblot analysis of unmodified Rap1a in multiple organs. The PK studies revealed a half-life of 47.7 ± 7.4 h. VSW1198 was present in all tested tissues with the highest levels in the liver. In both human liver microsomes and mouse S9 studies VSW1198 showed complete stability, suggesting no phase I or phase II metabolism. In summary, these studies demonstrate systemic distribution, on-target disruption of protein geranylgeranylation, and metabolic stability of a potent GGDPS inhibitor VSW1198 and form the basis for future efficacy studies in mouse models of myeloma.

Indexed as

AnimalsAntineoplastic AgentsFarnesyltranstransferaseFemaleHumansLiverMaximum Tolerated DoseMiceMicrosomes, LiverMultiple MyelomaProtein PrenylationTissue DistributionAntineoplastic AgentsFarnesyltranstransferaseGeranylgeranyl diphosphate synthaseInhibitorMyelomaPreclinical

Identifiers

PMID29497895
PMCPMC6119657
OpenAlexW2791147612

What Socratic holds

Textmetadata
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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 Socratic graph.