Evidence map›Paper›PMID 16772787›Full record

ArticleAnnals of surgery2006

Targeted molecular therapy of the PI3K pathway: therapeutic significance of PI3K subunit targeting in colorectal carcinoma.

Piotr G Rychahou, Lindsey N Jackson, Scott R Silva, Srinivasan Rajaraman, B Mark Evers

Open access · greenAbstract readComparative Study
In one paragraph

Article in Annals of surgery, 2006. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 65 papers.

0numbers the graph read from it
0cells of the map it votes in
65citing papers in PubMed
4.5field-weighted citation impact, top 5% 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

65 citing papers in PubMed, 107 citations in OpenAlex.

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  10. The Expression Level of ABCC6 Transporter in Colon Cancer Cells Correlates with the Activation of Different Intracellular Signaling Pathways.Pathophysiology : the official journal of the International Society for Pathophysiology · 2022
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  17. Colorectal cancer lung metastasis treatment with polymer-drug nanoparticles.Journal of controlled release : official journal of the Controlled Release Society · 2018
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  18. The Molecular Basis of Metastatic Colorectal Cancer.Current colorectal cancer reports · 2018
    Article
  19. Article
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5 more citing papers are in PubMed but not listed here.

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

5 authors at 1 institution in 1 country.

Piotr G RychahouDepartment of Surgery, University of Texas Medical Branch, Galveston, TX 77555, USA.
Lindsey N Jackson
Scott R Silva
Srinivasan Rajaraman
B Mark Evers
The University of Texas Medical Branch at Galveston · US

Funding

TISSUE CULTURE COREP01DK035608 · NIDDK · UNIVERSITY OF TEXAS MEDICAL BR GALVESTON · PI HELLMICH, MARK R · 1986 to 2010
$14.0M
SURGICAL STUDIES OF FUNCTIONAL GENE EXPRESSIONR01DK048498 · NIDDK · UNIVERSITY OF TEXAS MEDICAL BR GALVESTON · PI EVERS, BERNARD MARK · 1996 to 2023
$7.9M
SURGICAL TRAINING IN GASTROINTESTINAL ENDOCRINOLOGYT32DK007639 · NIDDK · UNIVERSITY OF TEXAS MEDICAL BR GALVESTON · PI RADHAKRISHNAN, RAVI S. · 1992 to 2022
$3.6M
Surgical Studies of Signaling Pathways in GI CancersR01CA104748 · NCI · UNIVERSITY OF TEXAS MEDICAL BR GALVESTON · PI EVERS, BERNARD MARK · 2004 to 2008
$1.5M
NCI NIH HHS R01 CA 104748NCI NIH HHS R01 CA104748NIDDK NIH HHS P01 DK035608NIDDK NIH HHS P01 DK 35608NIDDK NIH HHS R01 DK048498NIDDK NIH HHS R01 DK 48498NIDDK NIH HHS T32 DK007639NIDDK NIH HHS T32 DK 07639
6 · The paper itself

Abstract

objectiveThe phosphatidylinositol 3-kinase (PI3K) pathway promotes cancer cell proliferation and survival. The authors determined the pattern of distribution of PI3K pathway components (ie, the p85alpha regulatory subunit, p110alpha catalytic subunit, Akt1, Akt2, and the tumor suppressor PTEN) in human colorectal cancer. In addition, inhibition of in vitro proliferation and in vivo liver metastasis by p85alpha or p110alpha siRNA treatment was analyzed. SUMMARY BACKGROUND DATA: Small interfering RNA (siRNA) molecules suppress expression of target genes and may have therapeutic applications as target-specific therapies for cancer. Therefore, the purpose of this study was 2-fold: 1) to analyze the distribution pattern of PI3K pathway components in human normal colorectal cancers, and 2) to determine whether targeted inhibition of PI3K inhibits colon cancer growth in vitro and suppresses metastatic growth in vivo.

methodsImmunohistochemical analysis was performed on colorectal adenocarcinomas and adjacent normal mucosa for PI3K pathway components, including p85alpha, p110alpha, Akt1, Akt2, and the tumor suppressor PTEN, which inhibits PI3K. HT29 and KM20 human colon cancer cells were treated with siRNA directed to p85alpha or p110alpha, and cell viability and apoptosis assessed. HT29 cells, transfected with a plasmid containing green fluorescent protein (GFP), were injected into the spleen of athymic nude mice to establish liver metastases; mice were randomized to receive either nontargeting control (NTC), p85alpha or p110alpha siRNA.

resultsPI3K pathway components p85alpha and Akt2 were highly expressed in glandular elements of colon cancers, with a correlation between staining intensity and clinical stage; PTEN expression was decreased in the colon cancers of all stages. PI3K-specific siRNA treatment decreased cell viability in vitro and suppressed metastatic tumor growth in vivo.

conclusionsSelective targeting of PI3K pathway components may enhance the effects of standard chemotherapeutic agents and provide novel adjuvant treatment of selected colorectal cancers.

Indexed as

Phosphoinositide-3 Kinase InhibitorsAdultAgedAged, 80 and overAnimalsApoptosisBlotting, WesternCarcinomaCell Line, TumorCell ProliferationCell SurvivalColorectal NeoplasmsFemaleHumansImmunohistochemistryIn Vitro TechniquesPhosphatidylinositol 3-KinasesPhosphoinositide-3 Kinase InhibitorsRNA, NeoplasmRNA, Small Interfering

Identifiers

PMID16772787
PMCPMC1570577
OpenAlexW2078955176

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.