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Home Science News Cancer

Stem cells provide new insight into genetic pathway of childhood cancer

May 14, 2024
in Cancer
Reading Time: 3 mins read
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Fluorescently labelled mutant stem cells differentiated toward sympathetic neurons. Image recorded by Dr. Ingrid Saldana
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Scientists have discovered a new insight into the genetic pathway of childhood cancer, offering new hope for tailored treatments.

Fluorescently labelled mutant stem cells differentiated toward sympathetic neurons. Image recorded by Dr. Ingrid Saldana

Credit: Image recorded by Dr. Ingrid Saldana

Scientists have discovered a new insight into the genetic pathway of childhood cancer, offering new hope for tailored treatments.

Researchers from the University of Sheffield have created a stem cell model designed to investigate the origins of neuroblastoma, a cancer primarily affecting babies and young children. 

Neuroblastoma is the most common childhood tumour occurring outside the brain, affecting the lives of approximately 600 children in the European Union and the United Kingdom each year. 

Until now, studying genetic changes and their role in neuroblastoma initiation has been challenging due to the lack of suitable laboratory methods. A new model developed by researchers at the University of Sheffield, in collaboration with the St Anna Children’s Cancer Research Institute in Vienna, replicates the emergence of early neuroblastoma cancer-like cells, giving an insight into the genetic pathway of the disease.

The research, published in Nature Communications, sheds light on the intricate genetic pathways which initiate neuroblastoma. The international research team found that specific mutations in chromosomes 17 and 1, combined with overactivation of the MYCN gene, play a pivotal role in the development of aggressive neuroblastoma tumours.

Childhood cancer is often diagnosed and detected late, leaving researchers with very little idea of the conditions that led to tumour initiation, which occurs very early during foetal development. In order to understand tumour initiation, models which recreate the conditions that lead to the appearance of a tumour are vital.

The formation of neuroblastoma usually starts in the womb when a group of normal embryonic cells called ‘trunk neural crest (NC)’ become mutated and cancerous. 

In an interdisciplinary effort spearheaded by stem cell expert Dr Ingrid Saldana from the University of Sheffield’s School of Biosciences and computational biologist Dr Luis Montano from the St Anna Children’s Cancer Research Institute in Vienna, the new study found a way in which to use human stem cells to grow trunk NC cells in a petri dish.

These cells carried genetic changes often seen in aggressive neuroblastoma tumours. Using genomics analysis and advanced imaging techniques, the researchers found that the altered cells started behaving like cancer cells and looked very similar to the neuroblastoma cells found in sick children.

The findings offer new hope for the creation of tailored treatments that specifically target the cancer while minimising the adverse effects experienced by patients from existing therapies.

Dr Anestis Tsakiridis, from the University of Sheffield’s School of Biosciences and lead author of the study, said: “Our stem cell-based model mimics the early stages of aggressive neuroblastoma formation, providing invaluable insights into the genetic drivers of this devastating childhood cancer. By recreating the conditions that lead to tumour initiation, we will be able to understand better the mechanisms underpinning this process and thus design improved treatment strategies in the longer term. 

“This is very important as survival rates for children with aggressive neuroblastoma are poor and most survivors suffer from side effects linked to the harsh treatments currently used, which include potential hearing, fertility and lung problems”.

Dr. Florian Halbritter, from St. Anna Children’s Cancer Research Institute and second lead author of the study, said: “This was an impressive team effort, breaching geographic and disciplinary boundaries to enable new discoveries in childhood cancer research.”

This research supports the University of Sheffield’s cancer research strategy. Through the strategy, the University aims to prevent cancer-related deaths by undertaking high quality research, leading to more effective treatments, as well as methods to better prevent and detect cancer and improve quality of life.



Journal

Nature Communications

DOI

10.5281/zenodo.10891507

Method of Research

Computational simulation/modeling

Subject of Research

Human embryos

Article Title

A human neural crest model reveals the developmental impact of neuroblastoma-associated chromosomal aberrations

Article Publication Date

3-May-2024

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