Evidence map›Paper›PMID 25416019›Full record

ArticleInvestigational new drugs2015

The marine natural product microsclerodermin A is a novel inhibitor of the nuclear factor kappa B and induces apoptosis in pancreatic cancer cells.

Esther A Guzmán, Kelly Maers, Jill Roberts, Hilaire V Kemami-Wangun, Dedra Harmody, Amy E Wright

Abstract read
In one paragraph

Article in Investigational new drugs, 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 29 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
29citing papers in PubMed, 2 pooled it
3.4field-weighted citation impact, top 9% 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, 2 syntheses or guidelines pooled it, 46 citations in OpenAlex.

  1. Pooled it
  2. Pooled it
  3. Stereoselective Syntheses of Cyclic Microsclerodermin Derivatives.Chemistry (Weinheim an der Bergstrasse, Germany) · 2025
    Article
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  7. Article
  8. Review
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  14. Article
  15. Natural Cyclopeptides as Anticancer Agents in the Last 20 Years.International journal of molecular sciences · 2021
    Review
  16. Review
  17. Review
  18. Review
  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

6 authors at 2 institutions in 1 country.

Esther A GuzmánCenter for Marine Biomedical and Biotechnology Research, Harbor Branch Oceanographic Institute at Florida Atlantic University, 5600 US 1 North, Ft. Pierce, FL, 34946, USA, eguzman9@hboi.fau.edu.
Kelly Maers
Jill Roberts
Hilaire V Kemami-Wangun
Dedra Harmody
Amy E Wright
Florida Atlantic University · USHarbor Branch Oceanographic Institute · US

Funding

Targeted Discovery of Marine-derived Anticancer LeadsU19CA052955 · NCI · UNIVERSITY OF CALIFORNIA SANTA CRUZ · PI FENICAL, WILLIAM · 1995 to 2009
$9.7M
Discovery of Novel Antitumor Agents Effective Against Pancreatic CancerR01CA093455 · NCI · HARBOR BRANCH OCEANOGRAPHIC INST, INC. · PI WRIGHT, AMY ELIZABETH · 2003 to 2012
$2.0M
NCI NIH HHS R01 CA 093455NCI NIH HHS R01 CA093455NCI NIH HHS U19 CA052955NCI NIH HHS U19 CA 52955
6 · The paper itself

Abstract

Pancreatic cancer, the 4th leading cause of cancer death in the US, is highly resistant to all current chemotherapies, and its growth is facilitated by chronic inflammation. An important mediator of inflammation is the nuclear factor kappa B (NFκB), a transcription factor that regulates over 500 genes including the regulation of anti-apoptotic proteins, cell cycle progression and cytokine production. NFκB is constitutively activated in pancreatic cancer cells contributing to their resistance to apoptosis and high metastatic potential. Although many small molecules that inhibit NFκB have been identified, none are currently used in the clinic, perhaps due to their lack of specificity. To identify novel inhibitors of NFκB, the HBOI library of enriched fractions from marine organisms was screened using a reporter cell line that produces luciferin under the transcriptional control of NFκB. Fractions from the sponge Amphibleptula were active in this screen and contained the antifungal cyclic peptide microsclerodermin A. Microsclerodermin A is shown here to inhibit NFκB transcriptional activity in a reporter cell line, to reduce levels of phosphorylated (active) NFκB in the AsPC-1 cell line, to have an IC50 for cytotoxicity in the low micromolar range against the AsPC-1, BxPC-3, MIA PaCa-2 and PANC-1 pancreatic cancer cell lines, and to induce significant apoptosis in the AsPC-1, BxPC-3 and the PANC-1 cell lines. Treatment of AsPC-1 cells with microsclerodermin A also resulted in an increase in IL-8 production without apparent induction of angiogenic factors and there is the possibility that inhibition of NFκB by microsclerodermin A is mediated by the glycogen synthase kinase 3β pathway.

Indexed as

Antineoplastic AgentsApoptosisBiological ProductsCaspasesCell Line, TumorCell SurvivalCyclin D1Glycogen Synthase Kinase 3Glycogen Synthase Kinase 3 betaHumansInterleukin-8JNK Mitogen-Activated Protein KinasesNF-kappa BPancreatic NeoplasmsPeptides, CyclicProto-Oncogene Proteins c-aktAntineoplastic AgentsBiological ProductsCaspasesCXCL8 protein, humanCyclin D1Glycogen Synthase Kinase 3Glycogen Synthase Kinase 3 betaGSK3B protein, humanInterleukin-8JNK Mitogen-Activated Protein Kinasesmicrosclerodermin ANF-kappa BPeptides, CyclicProto-Oncogene Proteins c-aktProto-Oncogene Proteins c-fos

Identifiers

PMID25416019
PMCPMC4934660
OpenAlexW2049110814

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.