ArticleInternational journal of biomedical science : IJBS2010
Downregulation of Signaling-active IGF-1 by Dipeptidyl Peptidase IV (DPP-IV).
Article in International journal of biomedical science : IJBS, 2010. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 7 papers.
What it found
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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.
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.
Who cites it
7 citing papers in PubMed, 12 citations in OpenAlex.
- The role of DPP4 in viral infections: from receptor biology to antiviral target.Archives of virology · 2026Review
- Phloridzin's Diabetic Wound Healing Potential through DPP-4 Enzyme Inhibition: A Review Article.Current diabetes reviews · 2025Review
- Integrative Genetic Analysis of DPP4-Related Variants Reveals Risk Patterns for Type 2 Diabetes and Cardiometabolic Comorbidities.Diabetes, metabolic syndrome and obesity : targets and therapy · 2025Article
- Development of the dipeptidyl peptidase 4 family and its association with lung diseases: a narrative review.Journal of thoracic disease · 2023Review
- Dipeptidyl Peptidase 4 (DPP4) as A Novel Adipokine: Role in Metabolism and Fat Homeostasis.Biomedicines · 2022Review
- Influence of Dipeptidyl Peptidase-4 (DPP4) on Mesenchymal Stem-Cell (MSC) Biology: Implications for Regenerative Medicine - Review.Stem cell reviews and reports · 2022Review
- Pharmacology, physiology, and mechanisms of action of dipeptidyl peptidase-4 inhibitors.Endocrine reviews · 2014Review
Corrections and comments
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Authors and funding
9 authors at 3 institutions in 2 countries.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Functioning as an extracellular protease, dipeptidyl peptidase IV (DPP-IV) preferentially cleaves the peptide bond after the penultimate proline residue. We report here that DPP-IV cleaves the first two amino acids from insulin-like growth factor 1 (IGF-1), revealed by mass spectrometry. The kinetic parameters of the proteolytic cleavage indicate that this reaction is physiologically relevant. Interestingly, truncated IGF-1 is less potent than the full-length protein in activating the IGF-1R, but binds more readily to IGF-binding protein 3 (IGFBP3). Quantitative RT-PCR showed that the level of DPP-IV mRNA is dramatically lower in lung squamous cell carcinoma tissues than in adjacent nonneoplastic lung tissues. However, this reduction was not observed in lung adenocarcinoma tissues. Our study suggests a possible link between IGF-1 and DPP-IV in cancer development in a specific tumor niche. A DPP-IV-related pathway may be important in mitigating IGF-1 signaling. Consequently, a robust IGF signaling pathway may accelerate early carcinogenesis in environments lacking DPP-IV.
Indexed as
Identifiers
23675206PMC3615292W112861250What OpenQuestion holds
Registered trials
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.