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Comparative Oncology Chemosensitivity Assay for Personalized Medicine Using Low-coherence Digital Holography of Dynamic Light Scattering from Cancer Biopsies

Overview
Journal Sci Rep
Specialty Science
Date 2024 Feb 9
PMID 38332203
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Abstract

Nearly half of cancer patients who receive standard-of-care treatments fail to respond to their first-line chemotherapy, demonstrating the pressing need for improved methods to select personalized cancer therapies. Low-coherence digital holography has the potential to fill this need by performing dynamic contrast OCT on living cancer biopsies treated ex vivo with anti-cancer therapeutics. Fluctuation spectroscopy of dynamic light scattering under conditions of holographic phase stability captures ultra-low Doppler frequency shifts down to 10 mHz caused by light scattering from intracellular motions. In the comparative preclinical/clinical trials presented here, a two-species (human and canine) and two-cancer (esophageal carcinoma and B-cell lymphoma) analysis of spectral phenotypes identifies a set of drug response characteristics that span species and cancer type. Spatial heterogeneity across a centimeter-scale patient biopsy sample is assessed by measuring multiple millimeter-scale sub-samples. Improved predictive performance is achieved for chemoresistance profiling by identifying red-shifted sub-samples that may indicate impaired metabolism and removing them from the prediction analysis. These results show potential for using biodynamic imaging for personalized selection of cancer therapy.

Citing Articles

Evaluating the feasibility and predictive accuracy of biodynamic imaging to platinum-based chemotherapy response in esophageal adenocarcinoma.

Ajrouch A, Krempley B, Karkash A, DeWitt J, Al-Haddad M, Lim D Front Oncol. 2024; 14:1429343.

PMID: 39403334 PMC: 11471442. DOI: 10.3389/fonc.2024.1429343.

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