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Biomed Opt Express. 2018 Nov 13;9(12):6186-6204. doi: 10.1364/BOE.9.006186. eCollection 2018 Dec 01.

High resolution combined molecular and structural optical imaging of colorectal cancer in a xenograft mouse model.

Biomedical optics express

Fabio Feroldi, Mariska Verlaan, Helene Knaus, Valentina Davidoiu, Danielle J Vugts, Guus A M S van Dongen, Carla F M Molthoff, Johannes F de Boer

Affiliations

  1. Department of Physics and Astronomy, LaserLaB Amsterdam, VU University Amsterdam, de Boelelaan 1081, 1081HV, Amsterdam, The Netherlands.
  2. Amsterdam UMC, Vrije Universiteit Amsterdam, Department of Radiology & Nuclear Medicine, De Boelelaan 1117, 1081 HV Amsterdam, The Netherlands.

PMID: 31065422 PMCID: PMC6491025 DOI: 10.1364/BOE.9.006186

Abstract

With the emergence of immunotherapies for cancer treatment, there is a rising clinical need to visualize the tumor microenvironment (TME) non-invasively in detail, which could be crucial to predict the efficacy of therapy. Nuclear imaging techniques enable whole-body imaging but lack the required spatial resolution. Conversely, near-infrared immunofluorescence (immuno-NIRF) is able to reveal tumor cells and/or other cell subsets in the TME by targeting the expression of a specific membrane receptor with fluorescently labeled monoclonal antibodies (mAb). Optical coherence tomography (OCT) provides three-dimensional morphological imaging of tissues without exogenous contrast agents. The combination of the two allows molecular and structural contrast at a resolution of ~15 µm, allowing for the specific location of a cell-type target with immuno-NIRF as well as revealing the three-dimensional architectural context with OCT. For the first time, combined immuno-NIRF and OCT of a tumor is demonstrated

Conflict of interest statement

The authors declare that they have no conflict of interest.

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