Abstract:
PURPOSE:We evaluated new (111)In-labeled amino acid derivatives, in which the amino acids are conjugated with1,4,7,10-tetra-azacyclododecane-1,4,7,10-tetraacetic acid (DOTA), 1,4,7,10-tetraazacyclododecane-1,7-diacetic acid (DO2A) or 1,4,7,10-tetraazacyclododecane-1,4,7-triacetic acid (DO3A). METHODS:DOTA-aminoalanine (DOTA-A), DOTA-aminohomoalanine (DOTA-H), DOTA-lysine (DOTA-L), DO2A-alanine (DO2A-A), DO3A-alanine (DO3A-A) and DO3A-homoalanine (DO3A-H) were labeled with (111)In. In vitro cell uptake assays were performed usingHep3B (a human hepatoma cell line), CT26 (a mouse colon cancer cell line) and U87MG (a human glioma cell line). In vitro cell uptake inhibition assays were performed using U87MG and (111)In-DO3A-H. U87MG bearing xenografted mice were subject to biodistribution, SPECT imaging, autoradiography, and immunohistochemistry studies. RESULTS:Of the amino acid derivatives and cell lines examined, U87MG and (111)In-DO3A-H showed highest uptake in vitro. This uptake was blocked by 2-aminobicyclo-[2,2,1] heptane-2-carboxylic acid (BCH) and by tryptophan. (111)In-DO3A-HSPECT imaging of U87MG bearing xenografted mice visualized tumors (mean tumor-to-muscle ratio 3.16±0.74). Autoradiography and immunohistochemistry revealed that (111)In-DO3A-H uptake matched L-type amino acid transporter 1 expression. CONCLUSION:Tumor uptake was successfully imaged using (111)In-DO3A-H in U87MG bearing xenografted mice. (111)In-DO3A-H appears to be useful for imaging tumors expressing L-type amino acid transporter.
journal_name
Nucl Med Bioljournal_title
Nuclear medicine and biologyauthors
Lee JJ,Shetty D,Lee YS,Kim SE,Kim YJ,Hong MK,Son JY,Jeong JMdoi
10.1016/j.nucmedbio.2011.09.010subject
Has Abstractpub_date
2012-04-01 00:00:00pages
325-33issue
3eissn
0969-8051issn
1872-9614pii
S0969-8051(11)00231-9journal_volume
39pub_type
杂志文章abstract:INTRODUCTION:The commercially available 68Ge/68Ga generators are generally used in clinical context in conjunction with automated or semi-automated modules for the syntheses of 68Ga radiopharmaceuticals. It is desirable to develop strategies for the formulation of 68Ga-radiopharmaceuticals without use of such expensive...
journal_title:Nuclear medicine and biology
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journal_title:Nuclear medicine and biology
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journal_title:Nuclear medicine and biology
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journal_title:Nuclear medicine and biology
pub_type: 杂志文章
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abstract::The uptake, retention and tissue to blood ratios of two non-steroidal, 125I-labeled iodoestrogens, an iodotrihydroxyphenylethylene, 2-iodo-1,2-bis(4-hydroxyphenyl)-2-(3-hydroxyphenyl)ethylene and an iododihydroxyphenylethylene, 2-iodo-1,1-bis(4-hydroxyphenyl)-2-phenylethylene, were compared after intraperitoneal injec...
journal_title:Nuclear medicine and biology
pub_type: 杂志文章
doi:10.1016/0969-8051(95)00002-f
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journal_title:Nuclear medicine and biology
pub_type: 杂志文章
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journal_title:Nuclear medicine and biology
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journal_title:Nuclear medicine and biology
pub_type: 杂志文章
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journal_title:Nuclear medicine and biology
pub_type: 杂志文章
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更新日期:1996-11-01 00:00:00
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pub_type: 杂志文章
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journal_title:Nuclear medicine and biology
pub_type: 杂志文章
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更新日期:1993-05-01 00:00:00
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journal_title:Nuclear medicine and biology
pub_type: 杂志文章
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更新日期:2006-08-01 00:00:00
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journal_title:Nuclear medicine and biology
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journal_title:Nuclear medicine and biology
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journal_title:Nuclear medicine and biology
pub_type: 杂志文章,评审
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更新日期:2013-01-01 00:00:00
abstract::Metabolic studies of (111)In-DTPA-labeled polypeptides and peptides showed that the radiolabeled (poly)peptides generated (111)In-DTPA-adducts of amino acid that possess long residence times in the lysosomal compartment of the tissues where (poly)peptides accumulated. However, a recent study suggested that metal-chela...
journal_title:Nuclear medicine and biology
pub_type: 杂志文章
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更新日期:2001-05-01 00:00:00
abstract::Dual probe microdialysis was employed in intact rat brain to investigate the effect of intrastriatal perfusion with selective dopamine D1 and D2 receptor agonists and with c-fos antisense oligonucleotide on (a) local GABA release in the striatum; (b) the internal segment of the globus pallidus and the substantia nigra...
journal_title:Nuclear medicine and biology
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更新日期:1998-11-01 00:00:00
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journal_title:Nuclear medicine and biology
pub_type: 杂志文章
doi:10.1016/j.nucmedbio.2004.08.007
更新日期:2005-01-01 00:00:00
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journal_title:Nuclear medicine and biology
pub_type: 杂志文章
doi:10.1016/j.nucmedbio.2016.03.007
更新日期:2016-07-01 00:00:00
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journal_title:Nuclear medicine and biology
pub_type: 杂志文章
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更新日期:1997-10-01 00:00:00
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journal_title:Nuclear medicine and biology
pub_type: 杂志文章
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更新日期:2011-02-01 00:00:00
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journal_title:Nuclear medicine and biology
pub_type: 杂志文章
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更新日期:2018-01-01 00:00:00
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journal_title:Nuclear medicine and biology
pub_type: 杂志文章
doi:10.1016/0969-8051(94)90085-x
更新日期:1994-10-01 00:00:00
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journal_title:Nuclear medicine and biology
pub_type: 杂志文章
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更新日期:2011-08-01 00:00:00
abstract::The specific binding of [(11)C]doxepin, which has been used as a radioligand for mapping histamine H(1) receptors in human brain by positron emission tomography, was evaluated in five animal species. In mice the [(11)C]doxepin uptake was reduced by treatment with cold doxepin and two H(1) receptor antagonists, but not...
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pub_type: 杂志文章
doi:10.1016/j.nucmedbio.2003.11.005
更新日期:2004-05-01 00:00:00