| Title: |
Tumour-specific activation of a tumour-blood transport improves the diagnostic accuracy of blood tumour markers in miceResearch in context |
| Authors: |
Christian Schmithals; Bianca Kakoschky; Dominic Denk; Maike von Harten; Jan Henrik Klug; Edith Hintermann; Anne Dropmann; Eman Hamza; Anne Claire Jacomin; Jens U. Marquardt; Stefan Zeuzem; Peter Schirmacher; Eva Herrmann; Urs Christen; Thomas J. Vogl; Oliver Waidmann; Steven Dooley; Fabian Finkelmeier; Albrecht Piiper |
| Source: |
EBioMedicine, Vol 105, Iss , Pp 105178- (2024) |
| Publisher Information: |
Elsevier, 2024. |
| Publication Year: |
2024 |
| Collection: |
LCC:Medicine; LCC:Medicine (General) |
| Subject Terms: |
HCC; Tumour marker; α fetoprotein; iRGD; CEND-1; Early cancer detection; Medicine; Medicine (General); R5-920 |
| Description: |
Summary: Background: The accuracy of blood-based early tumour recognition is compromised by signal production at non-tumoral sites, low amount of signal produced by small tumours, and variable tumour production. Here we examined whether tumour-specific enhancement of vascular permeability by the particular tumour homing peptide, iRGD, which carries dual function of binding to integrin receptors overexpressed in the tumour vasculature and is known to promote extravasation via neuropilin-1 receptor upon site-specific cleavage, might be useful to improve blood-based tumour detection by inducing a yet unrecognised vice versa tumour-to-blood transport. Methods: To detect an iRGD-induced tumour-to-blood transport, we examined the effect of intravenously injected iRGD on blood levels of α-fetoprotein (AFP) and autotaxin in several mouse models of hepatocellular carcinoma (HCC) or in mice with chronic liver injury without HCC, and on prostate-specific antigen (PSA) levels in mice with prostate cancer. Findings: Intravenously injected iRGD rapidly and robustly elevated the blood levels of AFP in several mouse models of HCC, but not in mice with chronic liver injury. The effect was primarily seen in mice with small tumours and normal basal blood AFP levels, was attenuated by an anti-neuropilin-1 antibody, and depended on the concentration gradient between tumour and blood. iRGD treatment was also able to increase blood levels of autotaxin in HCC mice, and of PSA in mice with prostate cancer. Interpretation: We conclude that iRGD induces a tumour-to-blood transport in a tumour-specific fashion that has potential of improving diagnosis of early stage cancer. Funding: Deutsche Krebshilfe, DKTK, LOEWE-Frankfurt Cancer Institute. |
| Document Type: |
article |
| File Description: |
electronic resource |
| Language: |
English |
| ISSN: |
2352-3964 |
| Relation: |
http://www.sciencedirect.com/science/article/pii/S2352396424002135; https://doaj.org/toc/2352-3964 |
| DOI: |
10.1016/j.ebiom.2024.105178 |
| Access URL: |
https://doaj.org/article/697990059c5e4e25a28e59b2e57c8d91 |
| Accession Number: |
edsdoj.697990059c5e4e25a28e59b2e57c8d91 |
| Database: |
Directory of Open Access Journals |