Cited by 341Connective Tissue Growth Factor ResearchFibroblast Growth Factor ResearchBone and Dental Protein Studies

Cyr61, a Product of a Growth Factor-Inducible Immediate-Early Gene, Promotes Cell Proliferation, Migration, and Adhesion

Open access
Kireeva, Maria L., Mo, Fan-E, Yang, George P., Lau, Lester F.·1996·Molecular and Cellular Biology

Abstract

cyr61 was first identified as a growth factor-inducible immediate-early gene in mouse fibroblasts. The encoded Cyr61 protein is a secreted, cystein-rich heparin-binding protein that associates with the cell surface and the extracellular matrix, and in these aspects it resembles the Wnt-1 protein and a number of known growth factors. During embryogenesis, cyr61 is expressed most notably in mesenchymal cells that are differentiating into chondrocytes and in the vessel walls of the developing circulatory system. cyr61 is a member of an emerging gene family that encodes growth regulators, including the connective tissue growth factor and an avian proto-oncoprotein, Nov cyr61 also shares sequence similarities with two Drosophila genes, twisted gastrulation and short gastrulation, which interact with decapentaplegic to regulate dorsal-ventral patterning. In this report we describe the purification of the Cyr61 protein in a biologically active form, and we show that purified Cyr61 has the following activities: (i) it promotes the attachment and spreading of endothelial cells in a manner similar to that of fibronectin; (ii) it enhances the effects of basic fibroblast growth factor and platelet-derived growth factor on the rate of DNA synthesis of fibroblasts and vascular endothelial cells, although it has no detectable mitogenic activity by itself; and (iii) it acts as a chemotactic factor for fibroblasts. Taken together, these activities indicate that Cyr61 is likely to function as an extracellular matrix signaling molecule rather than as a classical growth factor and may regulate processes of cell proliferation, migration, adhesion, and differentiation during development.

The claims and statistics of this paper haven’t been checked yet.

Run the check — free, no account needed. It reads the open-access text and checks the sources it cites.

A few free checks a day · papers already verified open instantly · results are public

Integrity signals

Registry

Crossref · 10.1128/mcb.16.4.1326

Cites

48 of 48 references verified0 citation errors · 0 not checkable

Statistics

Claims the paper makes

The claims and statistics of this paper haven’t been checked yet.

Run the check — free, no account needed. It reads the open-access text and checks the sources it cites.

A few free checks a day · papers already verified open instantly · results are public

Claims other papers make about this one

Each is checked against this paper’s own text: does it say what the citing paper says it does?

  • CCN1 is tightly associated with the ECM after secretion and supports cell adhesion by directly binding integrin receptors.

    “early studies on CCN1 showed that it is tightly associated with the ECM upon secretion [13] and supports cell adhesion through direct binding to integrin receptors [14,15]”

    From CCN1/CYR61: the very model of a modern matricellular protein (2011) · cites this paper as [14]

  • CCN1 does not induce cell proliferation by itself but only enhances DNA synthesis induced by other mitogens.

    “CCN1 does not induce cell proliferation on its own but only enhances DNA synthesis induced by other mitogens [14]”

    From CCN1/CYR61: the very model of a modern matricellular protein (2011) · cites this paper as [14]

  • CCN1 does not induce DNA synthesis alone but synergizes with other mitogenic growth factors to augment growth factor-induced DNA synthesis in fibroblasts and endothelial cells through integrin αvβ3.

    “Although CCN1 does not induce DNA synthesis on its own, it can synergize with other mitogenic growth factors to augment growth factor-induced DNA synthesis in both fibroblasts and endothelial cells through integrin αvβ3 [14,71].”

    From CCN1/CYR61: the very model of a modern matricellular protein (2011) · cites this paper as [14]

Self-check

Percentages, sums and reported differences re-computed from the paper’s own numbers.

The self-check needs the paper’s full text.

Cites

Flagged first, then by citations

2 of the 50 references couldn’t be matched to a known paper.

Research works printed but not linked: 1

  1. [45]45. Yang, G. P. 1993. Ph.D. thesis. The University of Illinois at Chicago, Chicago.

Cited by

Sorted by citations

Authors
Kireeva, M. L., Mo, F.-E., Yang, G. P., & Lau, L. F.
Affiliations
University of Illinois Urbana-Champaign (US)
Venue
Molecular and Cellular Biology
Published
1996-04
Volume
16
Issue
4
Pages
1326-1334
ISSN
  • 0270-7306 (ISSN-L)
  • 1098-5549
OpenAlex
W1925481732
Cited by
341
References
50
Citations by year
2026: 1 · 2025: 5 · 2024: 2 · 2022: 5 · 2021: 7 · 2020: 6 · 2019: 10 · 2018: 4 · 2017: 5 · 2016: 15 · 2015: 12 · 2014: 12 · 2013: 11 · 2012: 10
FWCI
4.29
Type
journal article
Language
en
Open access
Locations
  • Molecular and Cellular Biology (publishedVersion)
  • PubMed Central (publishedVersion)
  • PubMed (publishedVersion)
Funders
  • American Heart Association
  • National Institutes of Health
  • National Cancer Institute (R01 CA46565-08, R01CA046565)
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Connective Tissue Growth Factor Research
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Fibroblast Growth Factor Research
  • Health Sciences › Medicine › Rheumatology › Bone and Dental Protein Studies
Keywords
CYR61, connective tissue growth factor, immediate early genes, heparin-binding protein, extracellular matrix signaling, cell adhesion, cell migration, cell proliferation, endothelial cell adhesion, basic fibroblast growth factor, platelet-derived growth factor, chemotaxis, fibroblast differentiation, chondrogenic differentiation, twisted gastrulation, short gastrulation, decapentaplegic, dorsoventral patterning, embryonic development
MeSH terms
Animals, Cell Adhesion, Cell Division, Cell Movement, Chemotaxis, DNA, Growth Substances, Heparin, Recombinant Proteins, 3T3 Cells, Genes, Immediate-Early, Immediate-Early Proteins, Intercellular Signaling Peptides and Proteins, Mice, Cysteine-Rich Protein 61

About these checks

Registry, retraction, Cites and statistics results are computed, not judged, with one exception: a printed reference that no index lists is read once by a model before it counts as a citation error. Claims are extracted by a model and kept only when their quote appears verbatim in the text; each cited source is then checked, with a model’s help, for whether it says what the claim relies on. Those verdicts can be wrong — read the claim’s quote and the cited source before relying on one.

Statistics and arithmetic are recomputed, not judged.

Confidence bands are shown only for fields calibrated on our annotated test set. None is calibrated yet, so no band is shown.

What counts as a claim ›How we measure confidence ›How we check this ›

Are you an author, or do you see a problem with this page? Request a review