Open AccessPre-clinical modelling of rectal cancer to develop novel radiotherapy-based treatment strategies
Author(s) -
Michael A. Gillespie,
Colin W. Steele,
Tamsin R.M. Lannagan,
Owen J. Sansom,
Campbell S.D. Roxburgh
Publication year - 2021
Publication title -
oncology reviews
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.637
H-Index - 21
eISSN - 1970-5565
pISSN - 1970-5557
DOI - 10.4081/oncol.2021.511
Subject(s) - medicine , chemoradiotherapy , colorectal cancer , radiation therapy , clinical trial , adjuvant radiotherapy , adjuvant , cancer , intensive care medicine , oncology , bioinformatics , medical physics , biology
Pre-operative chemoradiotherapy reduces local recurrence rates in locally advanced rectal cancer. 10-20% of patients undergo complete response to chemoradiotherapy, however, many patients show no response. The mechanisms underlying this are poorly understood; identifying molecular and immunological factors underpinning heterogeneous responses to chemoradiotherapy, will promote development of treatment strategies to improve responses and overcome resistance mechanisms. This review describes the advances made in pre-clinical modelling of colorectal cancer, including genetically engineered mouse models, transplantation models, patient derived organoids and radiotherapy platforms to study responses to chemoradiotherapy. Relevant literature was identified through the PubMed and MEDLINE databases, using the following keywords: rectal cancer; mouse models; organoids; neo-adjuvant treatment; radiotherapy; chemotherapy. By delineating the advantages and disadvantages of available models, we discuss how modelling techniques can be utilized to address current research priorities in locally advanced rectal cancer. We provide unique insight into the potential application of pre-clinical models in the development of novel neo-adjuvant treatment strategies, which will hopefully guide future clinical trials.