Background: Tumor hypoxia is linked to invasion and metastasis but whether this associates with tumor growth rate is not well understood. We aimed to study the relationship between hypoxia evaluated with the positron emission tomography (PET) tracer [(18)F]EF5 and tumor growth. Our second goal was to assess the variability in the uptake of [(18)F]EF5 in tumor between two scans.
Methods: Four human head and neck squamous cell carcinoma (UT-SCC) cell lines were xenografted in flank or neck of nude mice, and tumor size was closely monitored over the study period. The tumors were clearly visible when the first [(18)F]EF5 scan was acquired. After an exponential growth phase, the tumors were imaged again with [(18)F]EF5 and also with (18)F-fluorodeoxyglucose ([(18)F]FDG).
Results: There was a clear correlation between the percentage of tumor growth rate per day and the [(18)F]EF5 uptake in the latter scan (r = 0.766, p = 0.01). The uptake of [(18)F]EF5 in the first scan and the uptake of [(18)F]FDG did not significantly correlate with the tumor growth rate. We also observed considerable variations in the uptake of [(18)F]EF5 between the two scans.
Conclusions: The uptake of [(18)F]EF5 in the late phase of exponential tumor growth is associated with the tumor growth rate in mice bearing HNC xenografts.
Download full-text PDF |
Source |
|---|---|
| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC4412195 | PMC |
| http://dx.doi.org/10.1186/s13550-014-0065-z | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
CD155 promotes the advancement of hepatocellular carcinoma by suppressing the p53-mediated ferroptosis via interacting with CD96.
J Mol Med (Berl)
January 2025
Hospital Sensory Department, Shenzhen Qianhai Shekou Free Trade Zone Hospital, 36 Gongye Qi Road, Nanshan District, Shenzhen, 518067, China.
This work researched the influence and mechanism of CD155 on hepatocellular carcinoma advancement. CD155 expression and its effect on survival of hepatocellular carcinoma patients were analyzed based on the GEPIA2 database. String software predicted the interacting between CD155 and CD96, which was further verified by co-immunoprecipitation experiment.
View Article and Find Full Text PDFEstablishment of a human ovarian endometrioid carcinoma cell line by constitutive expression of cyclin-dependent kinase 4, cyclin D1 and telomerase reverse transcriptase.
Hum Cell
January 2025
Department of Tumor Pathology, Faculty of Medical Sciences, University of Fukui, 23-3 Matsuoka-Shimoaizuki, Eiheiji, Fukui, 910-1193, Japan.
Only a few human ovarian endometrioid carcinoma cell lines are currently available, partly due to the difficulty of establishing cell lines from low-grade cancers. Here, using a cell immortalization strategy consisting of i) inactivation of the p16-pRb pathway by constitutive expression of mutant cyclin-dependent kinase 4 (R24C) (CDK4) and cyclin D1, and ii) acquisition of telomerase reverse transcriptase (TERT) activity, we established a human ovarian endometrioid carcinoma cell line from a 46-year-old Japanese woman. That line, designated JFE-21, has proliferated continuously for over 6 months with a doubling time of ~ 55 h.
View Article and Find Full Text PDFIntralesional injection of CpG ODNs complexed with glatiramer acetate mitigates systemic cytokine toxicities and synergistically advances checkpoint blockade efficacy.
Drug Deliv Transl Res
January 2025
Kinimmune, Inc. St. Louis, 63141, Missouri, USA.
PD-L1/PD-1 checkpoint inhibitors (CPIs) are mainstream agents for cancer immunotherapy, but the prognosis is unsatisfactory in solid tumor patients lacking preexisting T-cell reactivity. Adjunct therapy strategies including the intratumoral administration of immunostimulants aim to address this limitation. CpG oligodeoxynucleotides (ODNs), TLR9 agonists that can potentiate adaptive immunity, have been widely investigated to tackle PD-L1/PD-1 resistance, but clinical success has been hindered by inconsistent efficacy and immune-related toxicities caused by systemic exposure.
View Article and Find Full Text PDFMonotropein represses the proliferation and angiogenesis via the AKT/NF-κB pathway in lung cancer.
Naunyn Schmiedebergs Arch Pharmacol
January 2025
General Hospital of Ningxia Medical University, Yinchuan, 750001, Ningxia, P. R. China.
Monotropein (Mon) is an iridoid glycosides extracted from Morinda officinalis F.C. How.
View Article and Find Full Text PDFPhyto-mediated fabrication of silver nanoparticles from Scrophularia striata extract (AgNPs-SSE): a potential inducer of apoptosis in breast cancer cells.
Mol Biol Rep
January 2025
Department of Biology, Central Tehran Branch, Islamic Azad University, Tehran, Iran.
Background: Breast carcinoma stands out as the most widespread invasive cancer and the top contributor to cancer-related mortality in women. Nanoparticles have emerged as promising tools in cancer detection, diagnosis, and prevention. In this study, the antitumor and apoptotic capability of silver nanoparticles synthesized through Scrophularia striata extract (AgNPs-SSE) was investigated toward breast cancer cells.
View Article and Find Full Text PDFWant AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!