Single-Photon Emission Computed Tomographic Imaging of the Early Time Course of Therapy-Induced Cell Death Using Technetium 99m Tricarbonyl His-Annexin A5 in a Colorectal Cancer Xenograft Model

Autor: Christophe Van de Wiele, Christel Vangestel, Nancy Van Damme, Steven Staelens, Patrick Pauwels, Chris P. M. Reutelingsperger, Koen Mertens, Marc Peeters, Gilles Mees
Přispěvatelé: Biochemie, Family Medicine, RS: CARIM School for Cardiovascular Diseases
Jazyk: angličtina
Rok vydání: 2012
Předmět:
IN-VIVO DETECTION
Time Factors
INCREASES
medicine.medical_treatment
Survivin
Inhibitor of Apoptosis Proteins
Mice
Annexin A5
lcsh:QH301-705.5
Cell Death
Caspase 3
Technetium
Organotechnetium Compounds
CHEMOTHERAPY
Condensed Matter Physics
Immunohistochemistry
V SCINTIGRAPHY
Tumor Burden
lcsh:R855-855.5
APOPTOTIC TUMOR RESPONSE
Molecular Medicine
AUTOPHAGY
Colorectal Neoplasms
Microtubule-Associated Proteins
Biotechnology
medicine.drug
lcsh:Medical technology
Bevacizumab
Biomedical Engineering
Antineoplastic Agents
PANITUMUMAB
Cell Line
Tumor
medicine
Animals
Humans
Radiology
Nuclear Medicine and imaging
PHOSPHATIDYLSERINE
Tomography
Emission-Computed
Single-Photon
Chemotherapy
business.industry
EFFICACY
Xenograft Model Antitumor Assays
Oxaliplatin
Irinotecan
Repressor Proteins
lcsh:Biology (General)
IONIZING-RADIATION
Human medicine
business
Nuclear medicine
Technetium-99m
Immunostaining
Zdroj: Molecular Imaging, 11(2), 135-147. Decker Publishing
Molecular imaging
Molecular imaging, 11(2), 135-147
Molecular Imaging, Vol 11 (2012)
ISSN: 1536-0121
1535-3508
Popis: As apoptosis occurs over an interval of time after administration of apoptosis-inducing therapy in tumors, the changes in technetium 99m (99mTc)-tricarbonyl (CO)3 His-annexin A5 (His-ann A5) accumulation over time were examined. Colo205-bearing mice were divided into six treatment groups: (1) control, (2) 5-fluorouracil (5-FU; 250 mg/kg), (3) irinotecan (100 mg/kg), (4) oxaliplatin (30 mg/kg), (5) bevacizumab (5 mg/kg), and (6) panitumumab (6 mg/kg). 99mTc-(CO)3 His-ann A5 was injected 4, 8, 12, 24, and 48 hours posttreatment, and micro–single-photon emission computed tomography was performed. Immunostaining of caspase-3 (apoptosis), survivin (antiapoptosis), and LC3-II (autophagy marker) was also performed. Different dynamics of 99mTc-(CO)3 His-ann A5 uptake were observed in this colorectal cancer xenograft model, in response to a single dose of three different chemotherapeutics (5-FU, irinotecan, and oxaliplatin). Bevacizumab-treated mice showed no increased uptake of the radiotracer, and a peak of 99mTc-(CO)3 His-ann A5 uptake in panitumumab-treated mice was observed 24 hours posttreatment, as confirmed by caspase-3 immunostaining. For irinotecan-, oxaliplatin-, and bevacizumab-treated tumors, a significant correlation was established between the radiotracer uptake and caspase-3 immunostaining ( r = .8, p < .05; r = .9, p < .001; r = .9, p < .001, respectively). For 5-FU- and panitumumabtreated mice, the correlation coefficients were r = .7 ( p = .18) and r = .7 ( p = .19), respectively. Optimal timing of annexin A5 imaging after the start of different treatments in the Colo205 model was determined.
Databáze: OpenAIRE
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