ArticleStem cells (Dayton, Ohio)2008
IFATS collection: Combinatorial peptides identify alpha5beta1 integrin as a receptor for the matricellular protein SPARC on adipose stromal cells.
Article in Stem cells (Dayton, Ohio), 2008. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 50 papers, 1 of them a synthesis that pooled 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.
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
50 citing papers in PubMed, 1 synthesis or guideline pooled it, 81 citations in OpenAlex.
- Prognostic Significance of SPARC Expression in Breast Cancer: A Meta-Analysis and Bioinformatics Analysis.BioMed research international · 2022Pooled it
- ITIH5 drives adipocyte differentiation and obesity-associated metabolic dysregulation via PI3K/AKT signaling activation.Journal of molecular cell biology · 2026Article
- Article
- Wolf in Sheep's Clothing: Taming Cancer's Resistance with Human Serum Albumin?International journal of nanomedicine · 2025Review
- Roles of myokines in osteoporosis under physiological and diabetic conditions.Frontiers in endocrinology · 2025Review
- SPARC overexpression in allogeneic adipose-derived mesenchymal stem cells in dog dry eye model induced by benzalkonium chloride.Stem cell research & therapy · 2024Article
- Protective effects of macrophage-specific integrin α5 in myocardial infarction are associated with accentuated angiogenesis.Nature communications · 2023Article
- SPARC in cancer-associated fibroblasts is an independent poor prognostic factor in non-metastatic triple-negative breast cancer and exhibits pro-tumor activity.International journal of cancer · 2023Article
- Association Between SPARC Polymorphisms and Ankylosing Spondylitis and Its mRNA and Protein Expression in a Chinese Han Population: A Case-Control Study.International journal of general medicine · 2023Article
- Article
- Secreted Protein Acidic and Rich in Cysteine (Metabolites · 2022Article
- Synthetic polypeptide crotamine: characterization as a myotoxin and as a target of combinatorial peptides.Journal of molecular medicine (Berlin, Germany) · 2022Article
- Review
- The PDAC Extracellular Matrix: A Review of the ECM Protein Composition, Tumor Cell Interaction, and Therapeutic Strategies.Frontiers in oncology · 2021Review
- SPOCK1 overexpression induced by platelet-derived growth factor-BB promotes hepatic stellate cell activation and liver fibrosis through the integrin α5β1/PI3K/Akt signaling pathway.Laboratory investigation; a journal of technical methods and pathology · 2020Article
- Albumin-Modified Melanin-Silica Hybrid Nanoparticles Target Breast Cancer Cells via a SPARC-Dependent Mechanism.Frontiers in bioengineering and biotechnology · 2020Article
- Non-glycanated Decorin Is a Drug Target on Human Adipose Stromal Cells.Molecular therapy oncolytics · 2017Article
- Bortezomib interferes with adhesion of B cell precursor acute lymphoblastic leukemia cells through SPARC up-regulation in human bone marrow mesenchymal stromal/stem cells.International journal of hematology · 2017Article
- Prohibitin/annexin 2 interaction regulates fatty acid transport in adipose tissue.JCI insight · 2016Article
- SPARC triggers a cell-autonomous program of synapse elimination.Proceedings of the National Academy of Sciences of the United States of America · 2015Article
Corrections and comments
PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.
Authors and funding
10 authors at 5 institutions in 1 country.
Funding
Abstract
The biological features of adipose stromal (stem) cells (ASC), which serve as progenitors for differentiated cells of white adipose tissue (WAT), are still largely undefined. In an initiative to identify functional ASC surface receptors, we screened a combinatorial library for peptide ligands binding to patient-derived ASC. We demonstrate that both primary and cultured human and mouse stromal cells express a conserved receptor targeted by peptides found to mimic SPARC, a matricellular protein that is required for normal WAT development. A signaling receptor for SPARC has not as yet been determined. By using the SPARC-mimicking peptides CMLAGWIPC (termed hPep) and CWLGEWLGC (termed mPep), isolated by panning on human and mouse cells, respectively, we identified the alpha5beta1 integrin complex as a candidate receptor for SPARC. On the basis of these results, we evaluated ASC responses to SPARC or SPARC-mimicking peptide exposure. Our results suggest that extracellular SPARC binds to alpha5beta1 integrin at sites of focal adhesions, an interaction disrupting firm attachment of ASC to extracellular matrix. We propose that SPARC-mediated mobilization of ASC through its effect on alpha5beta1 integrin complex provides a functional basis for the regulation of WAT body composition by SPARC. We also show that alpha5beta1 integrin is a potential target for ASC-selective intracellular delivery of bioactive peptides and gene therapy vectors directed by the SPARC-mimicking peptides. Disclosure of potential conflicts of interest is found at the end of this article.
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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.