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Published in: Journal of Experimental & Clinical Cancer Research 1/2021

Open Access 01-12-2021 | Metastasis | Research

Establishment and characterization of patient-derived head and neck cancer models from surgical specimens and endoscopic biopsies

Authors: Daniel Strüder, Theresa Momper, Nina Irmscher, Mareike Krause, Jan Liese, Sebastian Schraven, Annette Zimpfer, Sarah Zonnur, Ann-Sophie Burmeister, Björn Schneider, Bernhard Frerich, Robert Mlynski, Christina Große-Thie, Christian Junghanss, Claudia Maletzki

Published in: Journal of Experimental & Clinical Cancer Research | Issue 1/2021

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Abstract

Background

Head and neck squamous cell carcinoma (HNSCC) is heterogeneous in etiology, phenotype and biology. Patient-derived xenografts (PDX) maintain morphology and molecular profiling of the original tumors and have become a standard “Avatar” model for human cancer research. However, restricted availability of tumor samples hindered the widespread use of PDX. Most PDX-projects include only surgical specimens because reliable engraftment from biopsies is missing. Therefore, sample collection is limited and excludes recurrent and metastatic, non-resectable cancer from preclinical models as well as future personalized medicine.

Methods

This study compares the PDX-take rate, -growth, histopathology, and molecular characteristics of endoscopic specimens with surgical specimens. HNSCC samples (n = 55) were collected ad hoc, fresh frozen and implanted into NOD.Cg-PrkdcscidIl2rgtm1Wjl/SzJ mice.

Results

Engraftment was successful in both sample types. However, engraftment rate was lower (21 vs. 52%) and growth delayed (11.2 vs. 6.7 weeks) for endoscopic biopsies. Following engraftment, growth kinetic was similar. Comparisons of primary tumors and corresponding PDX models confirmed preservation of histomorphology (HE histology) and molecular profile (Illumina Cancer Hotspot Panel) of the patients’ tumors. Accompanying flow cytometry on primary tumor specimens revealed a heterogeneous tumor microenvironment among individual cases and identified M2-like macrophages as positive predictors for engraftment. Vice versa, a high PD-L1 expression (combined positive score on tumor/immune cells) predicted PDX rejection.

Conclusion

Including biopsy samples from locally advanced or metastatic lesions from patients with non-surgical treatment strategies, increases the availability of PDX for basic and translational research. This facilitates (pre-) clinical studies for individual response prediction based on immunological biomarkers.
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Literature
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go back to reference Dang RP, Le VH, Miles BA, et al. Clinical outcomes in patients with recurrent or metastatic human papilloma virus-positive head and neck cancer. Anticancer Res. 2016;36(4):1703–9.PubMed Dang RP, Le VH, Miles BA, et al. Clinical outcomes in patients with recurrent or metastatic human papilloma virus-positive head and neck cancer. Anticancer Res. 2016;36(4):1703–9.PubMed
Metadata
Title
Establishment and characterization of patient-derived head and neck cancer models from surgical specimens and endoscopic biopsies
Authors
Daniel Strüder
Theresa Momper
Nina Irmscher
Mareike Krause
Jan Liese
Sebastian Schraven
Annette Zimpfer
Sarah Zonnur
Ann-Sophie Burmeister
Björn Schneider
Bernhard Frerich
Robert Mlynski
Christina Große-Thie
Christian Junghanss
Claudia Maletzki
Publication date
01-12-2021
Publisher
BioMed Central
Keyword
Metastasis
Published in
Journal of Experimental & Clinical Cancer Research / Issue 1/2021
Electronic ISSN: 1756-9966
DOI
https://doi.org/10.1186/s13046-021-02047-w

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