Rachel is a Senior Research Fellow with the Department of Surgery. She has a background in molecular biology and cancer genetics.
Her research is centred on the molecular mechanisms of pathogenic bacteria in colorectal carcinogenesis.
Rachel's current research projects include investigating the effect of the gut microbiome on radiotherapy response in rectal cancer, microbiome-based markers of diverticular disease and molecular classification of colorectal cancer..
Publications
Rodger, E. J., Gimenez, G., Ajithkumar, P., Stockwell, P. A., Almomani, S., Bowden, S. A., Leichter, A. L., Ahn, A., Pattison, S., McCall, J. L., … Frizelle, F. A., Eccles, M. R., Purcell, R. V., & Chatterjee, A. (2023). An epigenetic signature of advanced colorectal cancer metastasis. iScience. Advance online publication. doi: 10.1016/j.isci.2023.106986
Sulit, A. K., Wilson, K., Pearson, J., Silander, O. K., Sampurno, S., Michael, M., … Frizelle, F., & Purcell, R. V. (2023). Human gene and microbial analyses in rectal cancer complete responses to radiotherapy. BJS Open, 7(3), zrad035. doi: 10.1093/bjsopen/zrad035
Lee, M. S., Purcell, R., McCombie, A., Frizelle, F., & Eglinton, T. (2023). Retrospective cohort study of the impact of faecoliths on the natural history of acute appendicitis. World Journal of Emergency Surgery, 18, 18. doi: 10.1186/s13017-023-00486-8
Thompson, N., Gatenby, G., Waddell, O., Purcell, R., Keenan, J., Pearson, J., Frizelle, F., & Glyn, T. (2023). Early onset colorectal cancer in Canterbury, New Zealand. ANZ Journal of Surgery. Advance online publication. doi: 10.1111/ans.18357
Lee, M. S., Thomas, A., Pearson, J. F., Purcell, R., Frizelle, F., & Glyn, T. (2022). Risk of colorectal cancer in patients with appendicitis over the age of 40 years. Colorectal Disease. Advance online publication. doi: 10.1111/codi.16429
Purcell, R. V. (2020). Bacteroides fragilis. In M. H. Floch (Ed.), Colorectal neoplasia and the colorectal microbiome: Dysplasia, probiotics, and fusobacteria. (pp. 57-77). London, UK: Academic Press. doi: 10.1016/B978-0-12-819672-4.00004-0
Chapter in Book - Research
Lee, M. S., Purcell, R., McCombie, A., Frizelle, F., & Eglinton, T. (2023). Retrospective cohort study of the impact of faecoliths on the natural history of acute appendicitis. World Journal of Emergency Surgery, 18, 18. doi: 10.1186/s13017-023-00486-8
Journal - Research Article
Rodger, E. J., Gimenez, G., Ajithkumar, P., Stockwell, P. A., Almomani, S., Bowden, S. A., Leichter, A. L., Ahn, A., Pattison, S., McCall, J. L., … Frizelle, F. A., Eccles, M. R., Purcell, R. V., & Chatterjee, A. (2023). An epigenetic signature of advanced colorectal cancer metastasis. iScience. Advance online publication. doi: 10.1016/j.isci.2023.106986
Journal - Research Article
Sulit, A. K., Wilson, K., Pearson, J., Silander, O. K., Sampurno, S., Michael, M., … Frizelle, F., & Purcell, R. V. (2023). Human gene and microbial analyses in rectal cancer complete responses to radiotherapy. BJS Open, 7(3), zrad035. doi: 10.1093/bjsopen/zrad035
Journal - Research Article
Thompson, N., Gatenby, G., Waddell, O., Purcell, R., Keenan, J., Pearson, J., Frizelle, F., & Glyn, T. (2023). Early onset colorectal cancer in Canterbury, New Zealand. ANZ Journal of Surgery. Advance online publication. doi: 10.1111/ans.18357
Journal - Research Article
Aitchison, A., Pearson, J. F., Purcell, R. V., Frizelle, F. A., & Keenan, J. I. (2022). Detection of Fusobacterium nucleatum DNA in primary care patient stool samples does not predict progression of colorectal neoplasia. PLoS ONE, 17(6), e0269541. doi: 10.1371/journal.pone.0269541
Journal - Research Article
Curio, S., Edwards, S. C., Suzuki, T., McGovern, J., Triulzi, C., Yoshida, N., … Purcell, R. V., … Guerra, N. (2022). NKG2D signaling regulates IL-17A-producing γδT cells in mice to promote cancer progression. Discovery Immunology, 1, kyac002. doi: 10.1093/discim/kyac002
Journal - Research Article
Lee, M. S., Thomas, A., Pearson, J. F., Purcell, R., Frizelle, F., & Glyn, T. (2022). Risk of colorectal cancer in patients with appendicitis over the age of 40 years. Colorectal Disease. Advance online publication. doi: 10.1111/codi.16429
Journal - Research Article
O'Grady, M. J., Turner, G. A., Sulit, A., Frizelle, F. A., & Purcell, R. (2022). Distinct changes in the colonic microbiome associated with acute diverticulitis. Colorectal Disease. Advance online publication. doi: 10.1111/codi.16271
Journal - Research Article
Purcell, R. V., Permain, J., & Keenan, J. I. (2022). Enterotoxigenic Bacteroides fragilis activates IL-8 expression through Stat3 in colorectal cancer cells. Gut Pathogens, 14, 16. doi: 10.1186/s13099-022-00489-x
Journal - Research Article
Turner, G., O'Grady, M., Hudson, D., Morgan, X., Frizelle, F., & Purcell, R. (2022). Rectal swabs are a reliable method of assessing the colonic microbiome. International Journal of Medical Microbiology, 312(2), 151549. doi: 10.1016/j.ijmm.2022.151549
Journal - Research Article
Lau, Y. C., Schmeier, S., Frizelle, F., & Purcell, R. (2021). Consensus molecular subtypes of primary colon tumors and their hepatic metastases. Future Science OA, 7(7), FSO722. doi: 10.2144/fsoa-2021-0021
Journal - Research Article
Turner, G. A., O'Grady, M. J., Senadeera, S. C., Wakeman, C. J., McCombie, A., Purcell, R. V., & Frizelle, F. A. (2021). The prevalence of right-sided colonic diverticulosis in a New Zealand population. ANZ Journal of Surgery, 91, 2110-2114. doi: 10.1111/ans.16995
Journal - Research Article
O'Grady, M., Clarke, L., Turner, G., Doogue, M., Purcell, R., Pearson, J., & Frizelle, F. (2020). Statin use and risk of acute diverticulitis: A population-based case-control study. Medicine, 99(20), e20264. doi: 10.1097/md.0000000000020264
Journal - Research Article
O'Grady, M., Turner, G., Currie, W., Yi, M., Frizelle, F., & Purcell, R. (2020). Acute diverticulitis: An ongoing economic burden on the health system. ANZ Journal of Surgery, 90, 2046-2049. doi: 10.1111/ans.16234
Journal - Research Article
Taylor, W. S., Pearson, J., Miller, A., Schmeier, S., Frizelle, F. A., & Purcell, R. V. (2020). MinION sequencing of colorectal cancer tumour microbiomes: A comparison with amplicon-based and RNA-sequencing. PLoS ONE, 15(5), e0233170. doi: 10.1371/journal.pone.0233170
Journal - Research Article
Purcell, R. V., Schmeier, S., Lau, Y. C., Pearson, J. F., & Frizelle, F. A. (2019). Molecular subtyping improves prognostication of Stage 2 colorectal cancer. BMC Cancer, 19(1), 1155. doi: 10.1186/s12885-019-6327-4
Journal - Research Article
Stevens, A. J., Purcell, R. V., Darling, K. A., Eggleston, M. J. F., Kennedy, M. A., & Rucklidge, J. J. (2019). Human gut microbiome changes during a 10 week randomised control trial for micronutrient supplementation in children with attention deficit hyperactivity disorder. Scientific Reports, 9, 10128. doi: 10.1038/s41598-019-46146-3
Journal - Research Article
Purcell, R. V., Kaakoush, N. O., Mitchell, H. M., Pearson, J. F., & Keenan, J. I. (2018). Gastrointestinal pathobionts in pediatric Crohn's disease patients. International Journal of Microbiology, 2018, 9203908. doi: 10.1155/2018/9203908
Journal - Research Article
Purcell, R. V., Pearson, J., Aitchison, A., Dixon, L., Frizelle, F. A., & Keenan, J. I. (2017). Colonization with enterotoxigenic Bacteroides fragilis is associated with early-stage colorectal neoplasia. PLoS ONE, 12(2), e0171602. doi: 10.1371/journal.pone.0171602
Journal - Research Article
Purcell, R. V., Visnovska, M., Biggs, P. J., Schmeier, S., & Frizelle, F. A. (2017). Distinct gut microbiome patterns associate with consensus molecular subtypes of colorectal cancer. Scientific Reports, 7, 11590. doi: 10.1038/s41598-017-11237-6
Journal - Research Article
Keenan, J. I., Aitchison, A., Purcell, R. V., Greenlees, R., Pearson, J. F., & Frizelle, F. A. (2016). Screening for enterotoxigenic Bacteroides fragilis in stool samples. Anaerobe, 40, 50-53. doi: 10.1016/j.anaerobe.2016.05.004
Journal - Research Article
Purcell, R. V., Pearson, J., Frizelle, F. A., & Keenan, J. I. (2016). Comparison of standard, quantitative and digital PCR in the detection of enterotoxigenic Bacteroides fragilis. Scientific Reports, 6, 34554. doi: 10.1038/srep34554
Journal - Research Article
Chatterjee, A., Leichter, A. L., Fan, V., Tsai, P., Purcell, R. V., Sullivan, M. J., & Eccles, M. R. (2015). A cross comparison of technologies for the detection of microRNAs in clinical FFPE samples of hepatoblastoma patients. Scientific Reports, 5, 10438. doi: 10.1038/srep10438
Journal - Research Article
Leichter, A. L., Purcell, R. V., Sullivan, M. J., Eccles, M. R., & Chatterjee, A. (2015). Multi-platform microRNA profiling of hepatoblastoma patients using formalin fixed paraffin embedded archival samples. GigaScience, 4, 54. doi: 10.1186/s13742-015-0099-9
Journal - Research Article
Purcell, R., Childs, M., Maibach, R., Miles, C., Turner, C., Zimmermann, A., … Sullivan, M. (2012). Potential biomarkers for hepatoblastoma: Results from the SIOPEL-3 study. European Journal of Cancer, 48(12), 1853-1859. doi: 10.1016/j.ejca.2011.10.019
Journal - Research Article
Purcell, R., Childs, M., Maibach, R., Miles, C., Turner, C., Zimmermann, A., & Sullivan, M. (2011). HGF/c-Met related activation of β-catenin in hepatoblastoma. Journal of Experimental & Clinical Cancer Research, 30, 96. doi: 10.1186/1756-9966-30-96
Journal - Research Article
Glyn, T., & Purcell, R. (2022). Circulating bacterial DNA: A new paradigm for cancer diagnostics [Mini review]. Frontiers in Medicine, 9, 831096. doi: 10.3389/fmed.2022.831096
Journal - Research Other
Noble, A. J., Purcell, R. V., Adams, A. T., Lam, Y. K., Ring, P. M., Anderson, J. R., & Osborne, A. J. (2022). A final frontier in environment-genome interactions? Integrated, multi-omic approaches to predictions of non-communicable disease risk. Frontiers in Genetics, 13, 831866. doi: 10.3389/fgene.2022.831866
Journal - Research Other
Shelling, A. N., Bicknell, L. S., Bohlander, S. S., Cox, M. P., Filoche, S. K., Fraser, H. G., … Te Aika, B., Purcell, R. V., & Tiller, J. M. (2022). Genomic discrimination in New Zealand health and life insurance: AGenDA: Against Genomic Discrimination in Aotearoa. New Zealand Medical Journal, 135(1551), 7-12. Retrieved from https://www.nzma.org.nz/journal
Journal - Research Other
Turner, G. A., O'Grady, M. J., Purcell, R. V., & Frizelle, F. A. (2022). Acute diverticulitis in young patients: A review of the changing epidemiology and etiology. Digestive Diseases & Sciences, 67, 1156-1162. doi: 10.1007/s10620-021-06956-w
Journal - Research Other
Turner, G. A., O'Grady, M. J., Purcell, R. V., & Frizelle, F. A. (2021). The epidemiology and etiology of right-sided colonic diverticulosis: A review. Annals of Coloproctology, 37(4), 196-203. doi: 10.3393/ac.2021.00192.0027
Journal - Research Other
Purcell, R. V., Hock, B. D., Gardner, J., Goddard, L., MacPherson, S. A., & McKenzie, J. L. (2019). Analysis of human papillomavirus infection and leukaemic infiltrate in cutaneous squamous cell carcinoma from patients with chronic lymphocytic leukaemia. British Journal of Haematology, 186(4), e67-e71. doi: 10.1111/bjh.15907
Journal - Research Other
Visnovska, T., Biggs, P. J., Schmeier, S., Frizelle, F. A., & Purcell, R. V. (2019). Metagenomics and transcriptomics data from human colorectal cancer [Data descriptor]. Scientific Data, 6(1), 116. doi: 10.1038/s41597-019-0117-3
Journal - Research Other
Permain, J., Purcell, R., Sulit, A., Hock, B., & Eglinton, T. (2022). Novel functional links between colorectal carcinogenesis and the microbiome. Colorectal Disease, 24(Suppl. 1), (pp. 4-5). doi: 10.1111/codi.16048
Conference Contribution - Published proceedings: Abstract
Purcell, R., Sulit, A., Wilson, K., Michael, M., Pearson, J., Ramsey, R., … Frizelle, F. (2022). The tumour microbiome and response to radiotherapy in rectal cancer. Colorectal Disease, 24(Suppl. 1), (pp. 5). doi: 10.1111/codi.16048
Conference Contribution - Published proceedings: Abstract
Sulit, A., Daigneault, M., Allen-Vercoe, E., Silander, O., Hock, B., McKenzie, J., Pearson, J., Frizelle, F., … Purcell, R. (2022). Lipopolysaccharide from colorectal cancer-associated bacteria influence cytokine production in immune cells. Colorectal Disease, 24(Suppl. 1), (pp. 55-56). doi: 10.1111/codi.16048
Conference Contribution - Published proceedings: Abstract
Purcell, R., Visnovska, M., Biggs, P., Schmeier, S., & Frizelle, F. (2017). Consensus molecular classification of colorectal cancer and association with the colonic microbiome. Proceedings of the American Society of Colon and Rectal Surgeons (ASCRS) Annual Scientific & Tripartite Meeting. (pp. 44-45). Retrieved from http://fascrs.org
Conference Contribution - Published proceedings: Abstract
Purcell, R., Sullivan, M., Maibach, R., Zimmermann, A., Miles, C., Turner, C., & Childs, M. (2011). HGF/C-met related activation of âeta-catenin in hepatoblastoma. Pediatric Blood & Cancer, 57(5), (pp. 728). doi: 10.1002/pbc.23299
Conference Contribution - Published proceedings: Abstract
Purcell, R., Sullivan, M., Maibach, R., Zimmermann, A., Turner, C., & Miles, C. (2011). Immunohistochemical analysis of hepatoblastomas reveals potential biomarkers. Pediatric Blood & Cancer, 57(5), (pp. 782). doi: 10.1002/pbc.23299
Conference Contribution - Published proceedings: Abstract
Sullivan, M., Hale, T., Miles, C., & Purcell, R. (2007). A tumour tissue array for the validation of candidate biomarkers for hepatoblastoma treated according to the SIOPEL 2 and 3 clinical trials. Pediatric Blood & Cancer, 49(Suppl. 6), PA.044, (pp. 450). doi: 10.1002/pbc.21342
Conference Contribution - Published proceedings: Abstract
Sullivan, M., Purcell, R., & Arsic, D. (2007). Sonic hedgehog pathway inhibition induces caspase-related apoptotic cell death in hepatoblastoma. Pediatric Blood & Cancer, 49(Suppl. 6), PA.043, (pp. 450). doi: 10.1002/pbc.21342
Conference Contribution - Published proceedings: Abstract
Sulit, A. K., Pearson, J., Liu, W., Silander, O. K., Wilson, K., Heriot, A., Frizelle, F., & Purcell, R. (2022, August). Human gene and microbial analyses suggest immunotherapy-like mechanisms in complete response to radiotherapy in rectal cancer. Verbal presentation at the Cancer Satellite Meeting: Queenstown Research Week, Queenstown, New Zealand.
Conference Contribution - Verbal presentation and other Conference outputs
Purcell, R. (2017, October). Distinct microbiome patterns associate with colorectal cancer molecular subtyptes. Verbal presentation at the New Zealand Society for Oncology (NZSO) Conference, Auckland, New Zealand.
Conference Contribution - Verbal presentation and other Conference outputs
Purcell, R. V., Visnovska, M., Biggs, P. J., Schmeier, S., & Frizelle, F. A. (2017, September). Distinct microbiome patterns associate with colorectal cancer molecular subtypes. Verbal presentation at the Queenstown Molecular Biology (QMB) Meetings, Queenstown, New Zealand.
Conference Contribution - Verbal presentation and other Conference outputs
Purcell, R., Pearson, J., Keenan, J., Schmeier, S., & Frizelle, F. (2016, August-September). Bacterial dysbiosis and the development of colorectal cancer. Verbal presentation at the Queenstown Molecular Biology (QMB) Meetings, Nelson, New Zealand.
Conference Contribution - Verbal presentation and other Conference outputs
Purcell, R., Pearson, J., Visnovska, M., Schmeier, S., & Frizelle, F. (2016, November). Consensus molecular classification of colorectal cancer and association with the colonic microbiome. Verbal presentation at the Joint Meeting of the New Zealand Microbiological Society (NZMS) and the New Zealand Society for Biochemistry and Molecular Biology (NZSBMB), Christchurch, New Zealand.
Conference Contribution - Verbal presentation and other Conference outputs
Purcell, R. (2011). Molecular mechanisms in the pathogenesis of hepatoblastoma (PhD). University of Otago, Dunedin, New Zealand. Retrieved from http://hdl.handle.net/10523/1841
Awarded Doctoral Degree