The IACR Meeting 2017 is targeting childhood cancer challenges and advancements

This week Newpark Hotel Kilkenny is hosting the Irish Association for Cancer Research annual meeting 2017. This meeting is the biggest event for Irish cancer researchers.

This is the first time in the history of the IACR meetings when an entire plenary session is solely dedicated to challenges and advancements in childhood cancer.

This session will unite Internationally recognised leaders in childhood cancer research. They will speak about what we know about origin and evolution of childhood cancers (Prof. Tariq Enver), how blood biomarkers can help in stratification and treatment of children (Prof. Sue Burchill), what impact Down syndrome has in the white blood cell cancer development and progression (Prof. Irene Roberts), how epigenetic changes affect tumour pathogenesis and future of therapeutics targeting theses changes (Prof Raymond Stallings).

May whatever we do at the lab today make a difference in another person’s life someday in the future.

Mei Rin Liew

I am a medical student at Penang Medical College under a twinning programme with the Royal College of Surgeons in Ireland. I studied my pre-clinical years at RCSI Dublin. In the summer of 2015, I had the opportunity to join the RCSI Research Summer School (RSS) Programme. I was mentored by Dr Olga Piskareva, from Cancer Genetics, Molecular and Cellular Therapeutics (MCT) Department, RCSI.  Being in this lab was simply one of the greatest experiences I have in my life; it was really rewarding.

My RSS project investigated the role of VDAC-1 protein on chemotherapy resistance in neuroblastoma. The only research focus of this lab is to find key players in neuroblastoma pathogenesis and to advance anti-cancer therapy.

Neuroblastoma cell line SK-N-AS. The cell line in my experiments.

I was entrusted with the task of splitting cells. I would plate them onto 96-well plates, add cisplatin drug and measure their viability afterwards. It may sound simple here, but the whole process required passion and hard-work.

Prior to this, I did not have any experience in the medical research field. During my first two weeks, everything seemed so tough; however, they became easier as the weeks flew by. My mentor, Olga, and the other staff and PhD students (Garret, John and Ross) were helpful and always guided me to explore my potentials. This programme taught me various new things which I would not have acquired on a normal day-to-day basis in school.

Introduction to Malaysian cuisine.

The people at Cancer Genetics were warm and wonderful. The hospitality, love and guidance cannot be quantified and words cannot express my immense gratitude towards them. It has been fascinating and I cherish every moment I spent there. We bonded over our weekly breakfast and tea sessions so well, and I am indeed grateful for being a part of this big family. It is my sincere wish that this positive spirit of togetherness will be preserved and will grow stronger in the future. This is something special, and I think ours is the best lab at RCSI!

Under this RSS, all the participants attended skills workshops and weekly Discovery Series lectures. We were also given a Biography of Cancer by Siddhartha Mukherjee to read; evidently a good read. Here are the links to the RCSI Research Summer School Student Testimonial Videos.

I returned to Penang Medical College to further my studies in my clinical years. I took part in the PMC Research Day 2016 in which I was awarded the First Prize in Oral Presentation. I would like to dedicate this success to Olga and everyone who has been with me throughout my time at Cancer Genetics. Without all the guidance, I would not have made it this far.

I strongly urge students to take part in the research opportunities, because you gain invaluable experiences that you do not get elsewhere. May whatever we do at the lab today make a difference in another person’s life someday in the future.

Mei Rin Liew

Quality of life for childhood cancer survivors

For children who do survive cancer, the battle is rarely over.  Over 60% of long‐term childhood cancer survivors have a chronic illness as a consequence of the treatment they received; over 25% have a severe or life‐ threatening illness. How much do we know about quality of life of childhood cancer survivors?

Researchers in health- and illness-related social sciences understand that the there is a life after the treatment completed. The life is full if diverse levels and issues from health related to social adaptation in different shapes and forms. Children and teenagers may experience fear when returning to school due to temporary or permanent changes to their physical appearance (1,2). They worry about their ability to socialise with their friends due to lengthy absences (3–5). Treatment can result in the development of learning disabilities in children and thus marking school as a major source of frustration (1,2). These learning difficulties can affect a child’s confidence and self-esteem, if left without attention and care (1,3). All studies come to the same conclusion. Challenges in education of children with cancer are complex, however most can be tackled efficiently through planning and good communication (1–5).

Recently researchers working in FRED HUTCH Cancer Research Center asked adult childhood cancer survivors a number of health related questions about the quality of lives (6,7). The results are far from optimistic: “chance of surviving childhood cancer has improved — but survivors’ overall health has not”. You can find more by following the link.

It is important not only to recognise the problems but to start changing the situation. Apparently much more could be done more efficiently if patients are involved in setting up future research agenda.


  1. Gurney JG, Krull KR, Kadan-Lottick N, Nicholson HS, Nathan PC, Zebrack B, et al. Social outcomes in the childhood cancer survivor study cohort. J Clin Oncol. 2009;27(14):2390–5.
  2. McDougall J, Tsonis M. Quality of life in survivors of childhood cancer: A systematic review of the literature (2001-2008). Supportive Care in Cancer. 2009. p. 1231–46.
  3. Barrera M, Shaw AK, Speechley KN, Maunsell E, Pogany L. Educational and social late effects of childhood cancer and related clinical, personal and familial characteristics. Cancer. 2005;104(8):1751–60.
  4. Langeveld NE, Stam H, Grootenhuis MA, Last BF. Quality of life in young adult survivors of childhood cancer. Support Care Cancer. 2002;10(8):579–600.
  5. Klassen AF, Anthony SJ, Khan A, Sung L, Klaassen R. Identifying determinants of quality of life of children with cancer and childhood cancer survivors: A systematic review. Support Care Cancer. 2011;19(9):1275–87.
  6. Yeh JM, Hanmer J, Ward ZJ, Leisenring WM, Armstrong GT, Hudson MM, et al. Chronic Conditions and Utility-Based Health-Related Quality of Life in Adult Childhood Cancer Survivors. J Natl Cancer Inst [Internet]. 2016;108(9):4–7.
  7. Armstrong GT, Chen Y, Yasui Y, Leisenring W, Gibson TM, Mertens AC, et al. Reduction in Late Mortality among 5-Year Survivors of Childhood Cancer. N Engl J Med. 2016;374(9):833–42.

Cell to Cell Communicators

Tumour cells send different types of messages from one cell to another aka people post letters, postcards, and parcels to their families, friends, colleagues or  business. Cells can direct their messages using free moving proteins – postcards. They can wrap it in microvesicles with different cargo. Big microvesicles can take up big messages – parcels, small microvesicles or exosomes contain a limited number of texts – letters.

Tumour cells change their behaviour quickly adapting to anticancer therapies, so the messages they are sending. These messages can easily join blood stream and be read by researchers to understand how treatment is working and tumour cells are feeling.  Reading these messages from blood is more favourable as blood tests are done on the regular bases during and after the treatment.

In our lab we investigate how neuroblasts communicate with each other and the entire body through exosomes. We are interested to see what they write in their letters – exosomes. Do drug resistant and sensitive neuroblasts write different texts? What is the difference and how we can use this difference to predict child response to anticancer therapy?

In one set of experiments, we found that exosomes from drug resistant neuroblasts stimulate growth of sensitive cells. The more resistant neuroblasts send more powerful messages pushing cells to grow faster.

In the other set of experiments, we partially cracked the message showing that their texts are different. This finding explains why more resistant neuroblasts send more growth stimulating messages.

All these findings will be presented at the upcoming conference Goodbye Flat Biology: Models, Mechanisms and Microenvironment in Berlin.



Schematic of exosome biogenesis and secretion. Cells produce exosomes through different pathways. This process is tightly regulated and controlled by numerous molecules. It can be triggered by many factors including extracellular stimuli (e.g., microbial attack, UV, drugs) and other stresses. The exosomes wrap up biologically active components such as proteins, RNA and miRNA. Exosomes can interact with recipient cells using four mechanisms: ligand/receptor interaction, protein transfer, membrane fusion or internalisation. Once exosomes entered the recipient cell, they release their content and re-programme the cell functions.


Suggested reading

Johnsen KB, Gudbergsson JM, Skov MN, Pilgaard L, Moos T, Duroux M. A comprehensive overview of exosomes as drug delivery vehicles – Endogenous nanocarriers for targeted cancer therapy. Biochim Biophys Acta – Rev Cancer. 2014;1846(1):75–87.

El Andaloussi S, Mäger I, Breakefield XO, Wood MJ a, Andaloussi S EL, Mäger I, et al. Extracellular vesicles: biology and emerging therapeutic opportunities. Nat Rev Drug Discov. 2013;12(5):347–57.

The schematic of exosomes was adapted from here

Neuroblastoma summary

Neuroblastoma is a childhood cancer caused by the abnormal growth and development of non-mature nerve cells, called neuroblasts [1]. The disease commonly affects children age 5 years or younger. Approximately 50% of children have tumours that have spread at diagnosis [1]. The main challenge in treating neuroblastoma is to stop tumour spread and resistance to multiple drugs. Despite major advances in available therapies, children with drug resistant and/or recurrent neuroblastoma have a dismal outlook with 5 year survival rates of less than 20% [2-4]. Therefore, this cancer needs more research and funding as well as people awareness of these needs.


  1. Davidoff, A. M. Neuroblastoma. Semin. Pediatr. Surg. 21, 2–14 (2012).
  2. Gatta, G. et al. Childhood cancer survival in Europe 1999-2007: Results of EUROCARE-5-a population-based study. Lancet Oncol. 15, 35–47 (2014)
  3. Peinemann, F., Tushabe, D. A., van Dalen, E. C. & Berthold, F. Rapid COJEC versus standard induction therapies for high-risk neuroblastoma. The Cochrane database of systematic reviews 5, CD010774 (2015).
  4. Peinemann, F., van Dalen, E. C., Tushabe, D. A. & Berthold, F. Retinoic acid post consolidation therapy for high-risk neuroblastoma patients treated with autologous hematopoietic stem cell transplantation. Cochrane database Syst. Rev. 1, CD010685 (2015)


Hi readers!

This blog is about neuroblastoma biology, its research challenges, and people and media perception of this disease. I am researcher and active supporter of science communication.  I hope you will find interesting to read my blog and ask questions. Your questions would help me to cover topics which I have not heard of or may not plan to cover yet.