Evidence map›Paper›PMID 17363567›Full record

ArticleCancer research2007

Concomitant activation of the JAK/STAT, PI3K/AKT, and ERK signaling is involved in leptin-mediated promotion of invasion and migration of hepatocellular carcinoma cells.

Neeraj K Saxena, Dipali Sharma, Xiaokun Ding, Songbai Lin, Fabio Marra, Didier Merlin, Frank A Anania

Open access · bronzeAbstract read
In one paragraph

Article in Cancer research, 2007. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 234 papers, 3 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
234citing papers in PubMed, 3 pooled it
9.8field-weighted citation impact, top 1% 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

234 citing papers in PubMed, 3 syntheses or guidelines pooled it, 469 citations in OpenAlex.

  1. Pooled it
  2. Pooled it
  3. Pooled it
  4. Trial
  5. Trial
  6. Review
  7. Review
  8. Review
  9. Gastrointestinal cancers in women: The role of sex hormones.Indian journal of gastroenterology : official journal of the Indian Society of Gastroenterology · 2026
    Review
  10. Review
  11. Article
  12. Review
  13. Review
  14. Article
  15. Article
  16. Apelin/APJ: Another Player in the Cancer Biology Network.International journal of molecular sciences · 2025
    Review
  17. Article
  18. Article
  19. Article
  20. Review

174 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

7 authors at 2 institutions in 2 countries.

Neeraj K SaxenaDivision of Digestive Diseases, Department of Medicine, Emory University School of Medicine, Atlanta, Georgia 30322, USA.
Dipali Sharma
Xiaokun Ding
Songbai Lin
Fabio Marra
Didier Merlin
Frank A Anania
Emory University · USUniversity of Florence · IT

Funding

Emory Epithelial Pathobiology Research Development CenterR24DK064399 · NIDDK · EMORY UNIVERSITY · PI PARKOS, CHARLES A · 2003 to 2012
$5.3M
The Role of Leptin in Liver FibrogenesisR01DK062092 · NIDDK · UNIVERSITY OF MARYLAND BALTIMORE · PI ANANIA, FRANK A · 2003 to 2016
$3.9M
ROLE OF CD98 IN INTESTINAL PERMEABILITYR01DK071594 · NIDDK · GEORGIA STATE UNIVERSITY · PI MERLIN, DIDIER · 2006 to 2017
$3.3M
hPepT1 in Intestinal InflammationR01DK061941 · NIDDK · EMORY UNIVERSITY · PI MERLIN, DIDIER · 2003 to 2008
$1.3M
hPepT1 in Intestinal InflammationR56DK061941 · NIDDK · EMORY UNIVERSITY · PI MERLIN, DIDIER · 2009 to 2009
$436k
The Role of Leptin in Liver FibrogenesisR56DK062092 · NIDDK · EMORY UNIVERSITY · PI ANANIA, FRANK A · 2012 to 2012
$207k
NIDDK NIH HHS DK061941NIDDK NIH HHS DK062092NIDDK NIH HHS DK071594NIDDK NIH HHS R01 DK061941NIDDK NIH HHS R01 DK062092NIDDK NIH HHS R01 DK071594NIDDK NIH HHS R24 DK064399NIDDK NIH HHS R24DK064399NIDDK NIH HHS R56 DK061941NIDDK NIH HHS R56 DK062092
6 · The paper itself

Abstract

Various epidemiologic studies have shown that obesity is associated with hepatocellular carcinoma. Leptin, the key player in the regulation of energy balance and body weight control, also acts as a growth factor on certain organs in both normal and disease states. It is plausible that leptin acts to promote hepatocellular carcinogenesis directly affecting malignant properties of liver cancer cells. However, a direct role for leptin in hepatocellular carcinoma has not been shown. In this study, we analyzed the role of leptin and the mechanism(s) underlying its action in hepatocellular carcinoma cells, which express both short and long isoforms of leptin receptors. Treatment with leptin resulted in increased proliferation of both HepG2 and Huh7 cells and involves activation of signal transducers and activators of transcription 3 (STAT3), AKT, and extracellular signal-regulated kinase (ERK) signaling pathways. Leptin-induced phosphorylation of ERK and AKT was dependent on Janus-activated kinase (JAK)/STAT activation. Intriguingly, we also found that leptin potently induces invasion of hepatocellular carcinoma cells in Matrigel invasion and electric cell-substrate impedance-sensing assays. Leptin-stimulated invasion was effectively blocked by pharmacologic inhibitors of JAK/STAT and, to a lesser extent, by ERK and phosphatidylinositol 3-kinase (PI3K) inhibition. Importantly, leptin also induced the migration of both HepG2 and Huh7 cells on fibronectin matrix. Inhibition of JAK/STAT, ERK, and PI3K activation using pharmacologic inhibitors effectively blocked leptin-induced migration of HepG2 and Huh7 cells. Taken together, these data indicate that leptin promotes hepatocellular carcinoma growth, invasiveness, and migration and implicate the JAK/STAT pathway as a critical mediator of leptin action. Our findings have potential clinical implications for hepatocellular carcinoma progression in obese patients.

Indexed as

Carcinoma, HepatocellularCell CycleCell Growth ProcessesCell Line, TumorCell MovementEnzyme ActivationExtracellular Signal-Regulated MAP KinasesHumansJanus KinasesLeptinLiver NeoplasmsMAP Kinase Signaling SystemNeoplasm InvasivenessPhosphatidylinositol 3-KinasesPhosphorylationProto-Oncogene Proteins c-aktExtracellular Signal-Regulated MAP KinasesJanus KinasesLEPR protein, humanLeptinPhosphatidylinositol 3-KinasesProto-Oncogene Proteins c-aktReceptors, Cell SurfaceReceptors, LeptinSTAT3 protein, humanSTAT3 Transcription Factor

Identifiers

PMID17363567
PMCPMC2925446
OpenAlexW2112182413

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.