02/08/2018 - Press release
Inhibiting the Jagged 1 protein in mice prevents the proliferation and growth of colon and rectal tumours. What is more, this approach to the disease permits the removal of existing tumours. This is the conclusion of a study led by the Molecular Mechanisms of Cancer and Stem Cells research group from the Hospital del Mar Medical Research Institute (IMIM), directed by Dr Lluís Espinosa, who is also a member of CIBERONC (the Network Centre for Biomedical Research into Cancer), in collaboration with the Pathological Anatomy and Medical Oncology Units at Hospital del Mar, and the IDIBELL-Catalan Oncology Institute. The work has been published in Nature Communications. The researchers took tumours from patients and then implanted them into mice in order to analyse the role of this protein in cancer cell proliferation. Jagged 1 is essential for cancer cells due to its role in activating the so-called Notch cell-signalling pathway. Generally speaking, Notch inhibits cell differentiation, in other words, a cell's ability to become a mature cell that can no longer proliferate. In the case of colorectal tumours, the activation of this signalling pathway favours their proliferation and growth.
Més informació "Key piece identified for slowing a colorectal cancer subtype"
17/05/2018 - Institutional news
The two IMIM researchers, Lluís Espinosa and Anna Vert, have been chosen to edit a special edition of the journal Biomedicines, from the MDPI publishing house. Under the title Stem Cells and Cancer Therapeutics, it will focus, in the words of the publishers, "on understanding the molecular mechanisms controlling normal cells and stem cells related to cancer, as well as the tools available for studying them in vitro and in vivo." This issue will focus on how new technologies can be used in cancer therapies. The special edition will include around twelve articles by particularly renowned authors. Five of these articles can already be consulted in open format, including the paper "Mammary Stem Cells and Breast Cancer Stem Cells: Molecular Connections and Clinical Implications", authored by Dr. Toni Celià-Terrassa, a researcher from the IMIM's Cancer Research Programme.
03/11/2017 - Press release
Dr. Joaquim Bellmunt, director of the Hospital del Mar Medical Research Institute (IMIM) and Associate Professor at the University of Harvard, at Dana Farber Cancer Institute in Boston, is one of the first authors of a new international study that has mapped genome of bladder cancer. As part of the TCGA project (The Cancer Genome Atlas), the researchers have reported their final analysis of 412 tumour samples, providing the most accurate genetic description to date of this type of cancer. This will enable the analysis of new personalised treatment hypotheses for this disease. The study was published in the journal Cell. Dr. Bellmunt has stated that thanks to this work, we now "have a much broader perspective on the different varieties of urinary bladder cancer and its genetic alterations". Even so, the head of the IMIM stresses that "it is necessary to continue researching the best treatments and confirm hypothesised new treatment methods."
20/02/2017 - Press release
An international multicentre study led by cancer specialist Joaquim Bellmunt, director of the Hospital del Mar Medical Research Institute (IMIM) and coordinator of the IMIM's Genitourinary Oncology research group, has demonstrated the effectiveness of immunotherapy in treating advanced bladder cancer when the initial chemotherapy using cisplatin no longer works. It is the first time patient survival has been significantly prolonged in this kind of situation. The treatment also improves the quality of life of patients with respect to chemotherapy. This phase III study published in the highly prestigious New England Journal of Medicine, a benchmark for advances in applied medicine, becomes a reference work as until now there had been no significant breakthroughs in bladder cancer treatment that could be applied when the first option was no longer effective. These results provide evidence supporting the use of Pembrolizumab, an immunotherapy drug, as a new standard treatment for advanced bladder cancer, as has also been demonstrated for other types of tumour such as melanoma and lung cáncer.
26/04/2016 - Press release
The expansion of the genetic test allows the detection of newly identified mutations by a team of oncologists at Hospital del Mar and the IMIM that explain a further 10-15% of the resistance to a group of drugs developed by colorectal tumours The resistance caused by EGFR mutations described by the same team of oncologist has been shown to be important in more of 25% of the patients treated using anti-EGFR therapy This work is a clear example of how in just a short time the results of a research project have been transferred to industry, in this case the Belgian multinational Biocartis, and how they have an almost immediate application in patients, improving and personalising colon cancer treatments The patent for the first test was obtained in 2013, the detection kit was marketed in 2014, and it has now been expanded, with a new licence, to include the newly-detected mutations
08/02/2016 - Institutional news
On February 4, to coincide with World Cancer Day, the AECC-Catalunya contra el Càncer, presented their Cancer Research Grants 2015 at the Drassanes Reials in Barcelona, in a ceremony attended by more than 400 people from the worlds of politics and business, as well as the general public. In this edition the AECC presented a total of €120,000 to six projects by emerging Catalan teams looking at colon cancer, leukaemia, brain tumours, gastrointestinal stromal tumours and prostate and bladder cancer. The winners include a project entitled: “Clinical implications of galectin-1 expression in genitourinary cancer: its role in diagnosis, prognosis and response prediction with immune check point inhibitors”, led by Pilar Navarro, coordinator of the Molecular Mechanisms of Tumorigenesis research group at the IMIM and Alejo Rodríguez-Vida, an oncologist at the Hospital del Mar
23/10/2014 - Press release
Researchers at the Hospital del Mar have discovered one of the key mechanisms in the development and progression of mycosis fungoide, a type of cancer originating in the lymphoid cells that develops initially on the skin. The study, published in the Journal of Investigative Dermatology, was co-led by Fernando Gallardo, a dermatologist at the Hospital del Mar and a researcher in the translational research group on haematopoietic malignancies at the Hospital del Mar Medical Research Institute (IMIM); Luis Espinosa and Anna Bigas from the IMIM Cancer Stem Cells Laboratory; Juan Sandoval, researcher at the La Fe Research Institute (IISlaFe); and Ángel Diaz, researcher at the Bellvitge Biomedical Research Institute (IDIBELL). The project was conducted with a series of skin samples from patients with mycosis fungoide in tumour phase and led to the identification of the miR-200C molecule as a possible therapeutic target for designing future treatments for this disease.
Més informació "A new therapeutic target identified for the most widespread cutaneous lymphoma"
14/10/2015 - Press release
An international study led by researchers from IMIM (Hospital del Mar Medical Research Institute) published in the journal Nature Communications has revealed that the intensity or efficiency of the activation of a protein called Notch, which is involved in the different phases of embryonic development, determines the fate of cells, i.e. if cells will form the aorta artery or blood (hematopoietic) stem cells. For artery cells, many Notch molecules need to be activated, whereas for hematopoietic cells many fewer are needed. According to Dr. Anna Bigas, the coordinator of the group on stem cells and cancer at IMIM “to reach these levels of activation, we have proven that there is a competition between two proteins that activate the Notch molecule, i.e. between two ligands, in a way that one limits the activation generated by the other to form hematopoietic stem cells”. Until now it was known, thanks to the studies conducted by this same group and others, that the Notch activation was essential to form arteries and hematopoietic stem cells. It was also known that the proteins responsible for this activation were ligands Delta4 and Jagged1, respectively. With this study, researchers have shown how this signal works to reach a certain level of activation and form the two different types of cells.
Més informació "A step forward in obtaining blood stem cells in laboratory"
04/10/2012 - Press release
Researchers from IMIM, have succeeded in determining the function of a new variant of enzyme IKKalpha (IKKα) to activate some of the genes taking part in the tumor progressions of colorectal cancer. In the future, this fact will make it possible to design new drugs that inhibit this enzyme specifically and are less toxic for the remaining body cells, hence improving the treatment for this disease.
Més informació "New function of a protein involved in colon cancer is identified"
25/07/2012 - Press release
Researchers from IMIM have deciphered the function executed by a protein called ?-catenin in generating blood tissue stem cells. These cells, also called haematopoietic, are used as a source for transplants that form part of the therapies to fight different types of leukaemia. The results obtained will open the doors to produce these stem cells in the laboratory and, thus, improve the quality and quantity of these surgical procedures. This will let patients with no compatible donors be able to benefit from this discovery in the future.
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