Abstract
Purpose
Near-infrared fluorescent probes for amyloid-beta (Aβ) are an exciting option for molecular imaging in Alzheimer’s disease research and may translate to clinical diagnostics. However, Aβ-targeted optical probes often suffer from poor specificity and slow clearance from the brain. We are designing smart optical probes that emit characteristic fluorescence signal only when bound to Aβ.
Methods
We synthesized a family of dyes and tested Aβ-binding sensitivity with fluorescence spectroscopy and tissue-staining.
Results
Select compounds exhibited Aβ-dependent changes in fluorescence quantum yield, lifetime, and emission spectra that may be imaged microscopically or in vivo using new lifetime and spectral fluorescence imaging techniques.
Conclusion
Smart optical probes that turn on when bound to Aβ will improve amyloid detection and may enable quantitative molecular imaging in vivo.
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References
Hyman BT, Trojanowski JQ. Consensus recommendations for the postmortem diagnosis of Alzheimer disease from the National Institute on Aging and the Reagan Institute Working Group on diagnostic criteria for the neuropathological assessment of Alzheimer disease. J Neuropathol Exp Neurol. 1997;56(10):1095–7.
Games D, Adams D, Alessandrini R, Barbour R, Berthelette P, Blackwell C, et al. Alzheimer-type neuropathology in transgenic mice overexpressing V717F beta-amyloid precursor protein. Nature. 1995;373(6514):523–7.
Hsiao KK, Borchelt DR, Olson K, Johannsdottir R, Kitt C, Yunis W, et al. Age-related CNS disorder and early death in transgenic FVB/N mice overexpressing Alzheimer amyloid precursor proteins. Neuron. 1995;15(5):1203–18.
Spires TL, Hyman BT. Neuronal structure is altered by amyloid plaques. Rev Neurosci. 2004;15(4):267–78.
Poduslo JF, Wengenack TM, Curran GL, Wisniewski T, Sigurdsson EM, Macura SI, et al. Molecular targeting of Alzheimer’s amyloid plaques for contrast-enhanced magnetic resonance imaging. Neurobiol Dis. 2002;11(2):315–29.
Higuchi M, Iwata N, Matsuba Y, Sato K, Sasamoto K, Saido TC. 19F and 1H MRI detection of amyloid beta plaques in vivo. Nat Neurosci. 2005;8(4):527–33.
Shoghi-Jadid K, Small GW, Agdeppa ED, Kepe V, Ercoli LM, Siddarth P, et al. Localization of neurofibrillary tangles and beta-amyloid plaques in the brains of living patients with Alzheimer disease. Am J Geriatr Psychiatry. 2002;10(1):24–35.
Ono M, Wilson A, Nobrega J, Westaway D, Verhoeff P, Zhuang ZP, et al. 11C-labeled stilbene derivatives as Abeta-aggregate-specific PET imaging agents for Alzheimer's disease. Nucl Med Biol. 2003;30(6):565–71.
Klunk WE, Engler H, Nordberg A, Wang Y, Blomqvist G, Holt DP, et al. Imaging brain amyloid in Alzheimer’s disease with Pittsburgh Compound-B. Ann Neurol. 2004;55(3):306–19.
Engler H, Forsberg A, Almkvist O, Blomquist G, Larsson E, Savitcheva I, et al. Two-year follow-up of amyloid deposition in patients with Alzheimer’s disease. Brain. 2006;129(11):2856–66.
Rowe CC, Ng S, Ackermann U, Gong SJ, Pike K, Savage G, et al. Imaging beta-amyloid burden in aging and dementia. Neurology. 2007;68(20):1718–25.
Hintersteiner M, Enz A, Frey P, Jaton AL, Kinzy W, Kneuer R, et al. In vivo detection of amyloid-beta deposits by near-infrared imaging using an oxazine-derivative probe. Nat Biotechnol. 2005;23(5):577–83.
Nesterov EE, Skoch J, Hyman BT, Klunk WE, Bacskai BJ, Swager TM. In vivo optical imaging of amyloid aggregates in brain: design of fluorescent markers. Angew Chem Int Ed Engl. 2005;44(34):5452–6.
Godavarty A, Sevick-Muraca EM, Eppstein MJ. Three-dimensional fluorescence lifetime tomography. Med Phys. 2005;32(4):992–1000.
Kumar AT, Skoch J, Bacskai BJ, Boas DA, Dunn AK. Fluorescence-lifetime-based tomography for turbid media. Opt Lett. 2005;30(24):3347–9.
Zavattini G, Vecchi S, Mitchell G, Weisser U, Leahy RM, Pichler BJ, et al. A hyperspectral fluorescence system for 3D in vivo optical imaging. Phys Med Biol. 2006;51(8):2029–43.
Dunphy I, Vinogradov SA, Wilson DF. Oxyphor R2 and G2: phosphors for measuring oxygen by oxygen-dependent quenching of phosphorescence. Anal Biochem. 2002;310(2):191–8.
Wilms CD, Eilers J. Photo-physical properties of Ca2+indicator dyes suitable for two-photon fluorescence-lifetime recordings. J Microsc. 2007;225(Pt 3):209–13.
Berezin MY, Lee H, Akers W, Achilefu S. Near infrared dyes as lifetime solvatochromic probes for micropolarity measurements of biological systems. Biophys J. 2007;93(8):2892–9.
Venkatraman P, Nguyen TT, Sainlos M, Bilsel O, Chitta S, Imperiali B, et al. Fluorogenic probes for monitoring peptide binding to class II MHC proteins in living cells. Nat Chem Biol. 2007;3(4):222–8.
Olmsted J III. Calorimetric determination of absolute fluorescence quantum yields. J Phys Chem. 1979;83(20):2581–4.
LeVine H 3rd. Thioflavine T interaction with synthetic Alzheimer’s disease beta-amyloid peptides: detection of amyloid aggregation in solution. Protein Sci. 1993;2(3):404–10.
Voropai ES, Samtsov MP, Kaplevskii KN, Maskevich AA, Stepuro VI, Povarova OI, et al. Spectral properties of Thioflavin T and its complexes with amyloid fibrils. J Appl Spectrosc. 2003;70(6):868–74.
Kumar ATN, Raymond SB, Boverman G, Boas DA, Bacskai BJ. Time resolved fluorescence tomography based on lifetime contrast. Opt Express. 2006;14:12255.
Levenson RM, Mansfield JR. Multispectral imaging in biology and medicine: slices of life. Cytometry A. 2006;69(8):748–58.
Tam JM, Upadhyay R, Pittet MJ, Weissleder R, Mahmood U. Improved in vivo whole-animal detection limits of green fluorescent protein-expressing tumor lines by spectral fluorescence imaging. Mol Imaging. 2007;6(4):269–76.
Mathis CA, Wang Y, Klunk WE. Imaging beta-amyloid plaques and neurofibrillary tangles in the aging human brain. Curr Pharm Des. 2004;10(13):1469–92.
Wang Y, Mathis CA, Huang GF, Debnath ML, Holt DP, Shao L, Klunk WE. Effects of lipophilicity on the affinity and nonspecific binding of iodinated benzothiazole derivatives. J Mol Neurosci. 2003;20(3):255–60.
Groenning M, Norrman M, Flink JM, van de Weert M, Bukrinsky JT, Schluckebier G, et al. Binding mode of Thioflavin T in insulin amyloid fibrils. J Struct Biol. 2007;159(3):483–97.
Groenning M, Olsen L, van de Weert M, Flink JM, Frokjaer S, Jargensen FS. Study on the binding of Thioflavin T to beta-sheet-rich and non-beta-sheet cavities. J Struct Biol. 2007;158(3):358–69.
Acknowledgment
This work was supported by NIH EB00768 and AG026240 (BJB) and the US Army through the Institute for Soldier Nanotechnologies, DAAD-19-02-D-0002 (TMS). S. B. Raymond was supported with the NDSEG fellowship, the Harvard University Ashford fellowship, and T32 EB001680.
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The authors declare that they have no relevant financial or any other interests in this manuscript.
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An erratum to this article can be found at http://dx.doi.org/10.1007/s00259-008-0749-6
An erratum to this article is available at http://dx.doi.org/10.1007/s00259-008-0749-6.
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Raymond, S.B., Skoch, J., Hills, I.D. et al. Smart optical probes for near-infrared fluorescence imaging of Alzheimer’s disease pathology. Eur J Nucl Med Mol Imaging 35 (Suppl 1), 93–98 (2008). https://doi.org/10.1007/s00259-007-0708-7
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DOI: https://doi.org/10.1007/s00259-007-0708-7