Evidence map›Paper›PMID 18723500›Full record

ArticleMolecular cancer therapeutics2008

Fatty acid synthase inhibition results in a magnetic resonance-detectable drop in phosphocholine.

James Ross, Amer M Najjar, Madhuri Sankaranarayanapillai, William P Tong, Kumaralal Kaluarachchi, Sabrina M Ronen

Open access · bronzeAbstract read
In one paragraph

Article in Molecular cancer therapeutics, 2008. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 26 papers.

0numbers the graph read from it
0cells of the map it votes in
26citing papers in PubMed
1.8field-weighted citation impact, top 13% 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

26 citing papers in PubMed, 42 citations in OpenAlex.

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  19. Association of lipid metabolism with ovarian cancer.Current oncology (Toronto, Ont.) · 2010
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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.

James RossDepartment of Radiology, University of California-San Francisco, 1700 4th Street, San Francisco, CA 94158, USA.
Amer M Najjar
Madhuri Sankaranarayanapillai
William P Tong
Kumaralal Kaluarachchi
Sabrina M Ronen
The University of Texas MD Anderson Cancer Center · US

Funding

Tumor Evolution and Metastasis ProgramP30CA016672 · NCI · UNIVERSITY OF TX MD ANDERSON CAN CTR · PI Scott Kopetz · 1985 to 2026
$290.8M
Phosphocholine modulation by oncognenic signaling - MRS studies of mechanismR01CA130819 · NCI · UNIVERSITY OF CALIFORNIA, SAN FRANCISCO · PI RONEN, SABRINA MIRIAM · 2008 to 2011
$1.3M
Non-invasive molecular MR spectroscopic imaging of histone deacetylase activityR21CA120010 · NCI · UNIVERSITY OF CALIFORNIA, SAN FRANCISCO · PI RONEN, SABRINA MIRIAM · 2007 to 2008
$339k
NCI NIH HHS CA 016672NCI NIH HHS P30 CA016672NCI NIH HHS R01 CA130819NCI NIH HHS R21 CA120010
6 · The paper itself

Abstract

Expression of fatty acid synthase (FASN), the key enzyme in de novo synthesis of long-chain fatty acids, is normally low but increases in cancer. Consequently, FASN is a novel target for cancer therapy. However, because FASN inhibitors can lead to tumor stasis rather than shrinkage, noninvasive methods for assessing FASN inhibition are needed. To this end, we combined (1)H, (31)P, and (13)C magnetic resonance spectroscopy (MRS) (a) to monitor the metabolic consequences of FASN inhibition and (b) to identify MRS-detectable metabolic biomarkers of response. Treatment of PC-3 cells with the FASN inhibitor Orlistat for up to 48 h resulted in inhibition of FASN activity by 70%, correlating with 74% inhibition of fatty acid synthesis. Furthermore, we have determined that FASN inhibition results not only in lower phosphatidylcholine levels but also in a 59% drop in the phospholipid precursor phosphocholine (PCho). This drop resulted from inhibition in PCho synthesis as a result of a reduction in the cellular activity of its synthetic enzyme choline kinase. The drop in PCho levels following FASN inhibition was confirmed in SKOV-3 ovarian cancer cells treated with Orlistat and in MCF-7 breast cancer cells treated with Orlistat as well as cerulenin. Combining data from all treated cells, the drop in PCho significantly correlated with the drop in de novo synthesized fatty acid levels, identifying PCho as a potential noninvasive MRS-detectable biomarker of FASN inhibition in vivo.

Indexed as

ApoptosisBase SequenceBlotting, WesternCell Line, TumorCell ProliferationDNA PrimersEnzyme InhibitorsFatty Acid SynthasesHumansLactonesMagnetic Resonance SpectroscopyOrlistatPhosphorylcholineDNA PrimersEnzyme InhibitorsFatty Acid SynthasesLactonesOrlistatPhosphorylcholine

Identifiers

PMID18723500
PMCPMC2553361
OpenAlexW2109520746

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.