PET Imaging of Extracellular pH in Tumors with (64)Cu- and (18)F-Labeled pHLIP Peptides: A Structure-Activity Optimization Study.
PET Imaging of Extracellular pH in Tumors with (64)Cu- and (18)F-Labeled pHLIP Peptides: A Structure-Activity Optimization Study.
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DOI:
10.1021/acs.bioconjchem.6b00306
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发表时间:
2016-09-21
影响因子:
4.7
通讯作者:
Lewis, Jason S.
中科院分区:
文献类型:
--
作者:
Demoin, Dustin Wayne;Wyatt, Linden C.;Edwards, Kimberly J.;Abdel-Atti, Dalya;Sarparanta, Mirkka;Pourat, Jacob;Longo, Valerie A.;Carlin, Sean D.;Engelman, Donald M.;Andreev, Oleg A.;Reshetnyak, Yana K.;Viola-Villegas, Nerissa;Lewis, Jason S.
pH (low) insertion peptides (pHLIP peptides) target acidic extracellular environments in vivo due to pH-dependent cellular membrane insertion. Two variants (Var3 and Var7) and wild-type (WT) pHLIP peptides have shown promise for in vivo imaging of breast cancer. Two positron emitting radionuclides (64Cu and 18F) were used to label the NOTA- and NO2A-derivatized Var3, Var7, and WT peptides for in vivo biodistribution studies in 4T1 orthotopic tumor-bearing BALB/c mice. All of the constructs were radiolabeled with 64Cu or [18F]-AlF in good yield. The in vivo biodistribution of the 12 constructs in 4T1 orthotopic allografted female BALB/c mice indicated that NO2A-cysVar3, radiolabeled with either 18F (4T1 uptake; 8.9 ± 1.7%ID/g at 4 h p.i.) or 64Cu (4T1 uptake; 8.2 ± 0.9%ID/g at 4 h p.i. and 19.2 ± 1.8% ID/g at 24 h p.i.), shows the most promise for clinical translation. Additional studies to investigate other tumor models (melanoma, prostate, and brain tumor models) indicated the universality of tumor targeting of these tracers. From this study, future clinical translation will focus on 18F- or 64Cu-labeled NO2A-cysVar3.
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DOI:
10.1158/1078-0432.ccr-11-0397
发表时间:
2011-10-01
期刊:
Clinical cancer research : an official journal of the American Association for Cancer Research
影响因子:
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作者:
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DOI:
10.1073/pnas.1405240111
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2014-05-20
影响因子:
11.1
作者:
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通讯作者:
Lewis, Jason S.
影响因子:
1.8
作者:
Carroll, V.;Demoin, D. W.;Jurisson, S. S.
通讯作者:
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影响因子:
4
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DOI:
10.1016/j.jconrel.2013.01.037
发表时间:
2013-05-10
期刊:
Journal of controlled release : official journal of the Controlled Release Society
影响因子:
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作者:
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