MicroSPECT/CT imaging and pharmacokinetics of 188Re-(DXR)-liposome in human colorectal adenocarcinoma-bearing mice.
Nanoliposome can be designed as a drug delivery carrier to improve the pharmacological and therapeutic properties of drug administration. (188)Re-labeled nanoliposomes are useful for diagnostic imaging as well as for targeted radionuclide therapy. In this study, the in vivo nuclear imaging, pharmacokinetics and biodistribution of administered nanoliposomes were investigated as drug and radionuclide carriers for targeting solid tumor via intravenous (i.v.) administration. The radiotherapeutics ((188)Re-liposome) and radiochemotherapeutics ((188)Re-DXR-liposome) were i.v. administered to nude mice bearing human HT-29 colorectal adenocarcinoma xenografts. (188)Re-liposome and (188)Re-DXR-liposomes show similar biodistribution profile; both have higher tumor uptake, higher blood retention time, and lower excretion rate than (188)Re-N,N-bis(2-mercaptoethyl)-N',N'-diethylenediamine (BMEDA). In contrast to tumor uptake, the area under the curve (AUC) value of tumor for (188)Re-liposome and (188)Re-DXR-liposome was 16.5- and 11.5-fold higher than that of free (188)Re-BMEDA, respectively. Additionally, (188)Re-liposome and (188)Re-DXR-liposome had a higher tumor-to-muscle ratio at 24 h (14.4+/-2 .7 and 17.14+/-4.1, respectively) than (188)Re-BMEDA (1.6+/-0.1). The tumor targeting and distribution of (188)Re-(DXR)-liposome (representing (188)Re-DXR-liposome and (188)Re-liposome) can also be acquired by signal photon-emission computed tomography/computed tomography images as well as whole body autoradiograph. These results suggest that (188)Re-(DXR)-liposomes are potentially promising agents for passive targeting treatment of malignant disease.
Chen
Min-Hua
MH
Center of Nanomedicine Research and National Institute of Cancer Research, National Health Research Institutes. 4F, 123-2, Section 1, Wan-Mei Street, Wen-Shan Districts, Taipei 116, Taiwan. R.O.C.
Chang
Chih-Hsien
CH
Chang
Ya-Jen
YJ
Chen
Liang-Cheng
LC
Yu
Chia-Yu
CY
Wu
Yu-Hsien
YH
Lee
Wan-Chi
WC
Yeh
Chung-Hsin
CH
Lin
Feng-Huei
FH
Lee
Te-Wei
TW
Yang
Chung-Shi
CS
Ting
Gann
G
D000230:Adenocarcinoma / Q000000981:diagnostic imaging / Q000378:metabolism*; D000818:Animals; D015179:Colorectal Neoplasms / Q000000981:diagnostic imaging / Q000378:metabolism*; D004317:Doxorubicin / Q000008:administration & dosage / Q000031:analogs & derivatives* / Q000493:pharmacokinetics; D019073:HT29 Cells; D006801:Humans; D008081:Liposomes / Q000008:administration & dosage / Q000493:pharmacokinetics; D051379:Mice; D008819:Mice, Nude; D053758:Nanoparticles / Q000008:administration & dosage*; D009942:Organometallic Compounds / Q000008:administration & dosage / Q000493:pharmacokinetics; D011868:Radioisotopes / Q000493:pharmacokinetics*; D019275:Radiopharmaceuticals / Q000008:administration & dosage / Q000493:pharmacokinetics*; D012211:Rhenium / Q000493:pharmacokinetics*; D014018:Tissue Distribution; D015899:Tomography, Emission-Computed, Single-Photon / Q000379:methods; D014183:Transplantation, Heterologous
D008081:Liposomes; D009942:Organometallic Compounds; D011868:Radioisotopes; D019275:Radiopharmaceuticals; D012211:Rhenium; D004317:Doxorubicin