30/03/2023 - Press release
Adding a peptide, a molecule made of several amino acids, to oxaliplatin, a chemotherapy drug used to treat colorectal cancer, avoids the side effects this treatment can have on normal cells, including potential chemotherapy resistance. This is confirmed by an article published in the Journal of Medicinal Chemistry, led by the Hospital del Mar Medical Research Institute and the Institute for Research in Biomedicine (IRB Barcelona). This work is the second part of a recent study that explored how platinum accumulation in normal cells promotes platinum resistance in colorectal cancer cells. This new approach prevents healthy cells surrounding the tumour from accumulating platinum. This avoids the activation of certain genes linked to poor treatment response and tumour progression.
21/02/2023 - Press release
A study led by researchers at the Hospital del Mar Medical Research Institute shows that the oxaliplatin administered in some cases of colorectal cancer accumulates in non-cancerous/healthy cells from the tumor environment. This accumulation causes healthy cells to produce a protein that further activates them, triggering tumor resistance to treatment and assisting in tumor regeneration. The researchers discovered a marker that can identify these tumors unresponsive to chemotherapy. The study, published in the journal Nature Communications, paves the way for new strategies enhancing the effects of chemotherapy on cancer cells while avoiding adverse side effects on non-cancerous cells.
11/01/2023 - Press release
A study led by researchers from the Stem Cell and Cancer Research Group at the Hospital del Mar Medical Research Institute has revealed the key role a protein plays in identifying patients with T-cell acute lymphoblastic leukaemia who will not respond to standard treatment. The study, published in the journal EMBO Molecular Medicine, shows that combining chemotherapy with an inhibitor for this protein helps to eliminate treatment resistance in an animal model. This is a rare disease, which is diagnosed in around a hundred people each year in Spain, mainly paediatric patients.
19/10/2022 - Press release
A multicentre study involving hospitals in Spain and Portugal, led by Hospital del Mar, shows that these patients already receive enough radiation to treat the disease when the breast affected by the tumour is irradiated directly. The study monitored more than 400 women. The results indicate that the five-year survival rate and relapses are practically identical between those who underwent specific treatment targeting the nodes located in the armpits and those who only received breast radiation. The findings of the OPTIMAL study have been published in the journal Radiation Oncology and can now be applied to clinical practice. Thanks to this fact, patients will need less radiotherapy and will suffer fewer treatment-related side effects.
05/10/2022 - Press release
A study led by researchers at the Hospital del Mar Medical Research Institute (IMIM-Hospital del Mar) has determined the role that fibroblasts, the cells that contribute to tissue formation, play in a tumour's ability to generate resistance to the most common biological treatment for HER2. The paper, published in the journal Nature Communications, demonstrates the ability of a new therapy, currently undergoing clinical trials, to promote a potent immune response by binding to the fibroblasts, enabling it to overcome resistance to anti-HER2 therapy in tumours with this cancer cell protection mechanism. To demonstrate this, the researchers created a 3D tumour model in which they were able to check the relationships between all the factors involved.
30/05/2022 - Press release
A group of genes has been identified in cancerous cells that survive chemotherapy treatment. The activity of these genes leads to treatment resistance and increased capacity for metastasis. This breakthrough opens the door to studying targeted treatments using drug inhibitors of these genes combined with chemotherapy, potentially providing alternatives for patients with a worse prognosis in this type of tumor, accounting for 30% of cases. The research, led by scientists from the Hospital del Mar Medical Research Institute, highlights that this type of tumor cell reverts to an embryonic state. Identifying the factor that triggers this change could aid in designing new treatments for high-risk patients.
17/03/2022 - Press release
Researchers at the Hospital del Mar Medical Research Institute and Hospital del Mar have transformed immunotherapy-resistant tumours into tumours that respond to this treatment, achieving cures in animal models through an innovative therapeutic strategy in triple-negative breast cancer, the most aggressive subtype. Researchers have discovered the essential role of a new factor, LCOR, in enabling cancer cells to present tumour antigens on their surfaces. These antigens allow the immune system to recognise the tumour, an essential step if immunotherapy treatment is to succeed. On the other hand, they have shown that cancer stem cells have very low levels of LCOR, making them invisible to the immune system and therefore resistant to treatment. The work that has just been published used an innovative experimental messenger RNA system, similar to the technology used for COVID-19 vaccines, to produce LCOR in tumour cells. In this way, the resistant tumour cells of triple-negative cancer become visible and sensitive to the immune system. This approach is also being investigated in other breast cancer subtypes
Més informació "Radical increase in the effectiveness of breast cancer immunotherapy"
08/02/2022 - Press release
Drugs which are commonly-used as the first line of treatment for colorectal cancer cause the tumour cells to oversecrete proteins known as mucins, according to a new study published today in the journal eLife. The proteins alter the mucous layer, forming a physical barrier that prevents drugs from reaching their intended target. Using different techniques involving genetic manipulation and the use of chemical inhibitors, the research team were able to experimentally regulate mucin secretion in cancer cell lines and patient-derived organoids, paving the way for the development of future treatments that can be used alongside chemotherapy to target drug-resistant forms of colorectal cancer. The experiments also revealed potential new biomarkers for the prognosis of the disease.
Més informació "Colorectal cancers raise defensive barrier in response to chemotherapy"
27/01/2022 - Press release
This is a new valid marker for diagnosing this type of tumour, one of the cancers with the worst prognosis. It is, in fact, the third leading cause of cancer death in developed countries. The study, published in the journal eBioMedicine, was led by researchers from the Hospital del Mar Medical Research Institute and IBB-CSIC-IDIBAPS. Their results point to a protein present in tumour cells as an indicator of pancreatic cancer in early stages of the disease. This marker can be detected through a simple blood test, facilitating its application in clinical practice. A team of researchers from the Hospital del Mar Medical Research Institute (IMIM-Hospital del Mar) and IIBB-CSIC-IDIBAPS have identified a new viable early diagnostic marker for the most common type of pancreatic cancer, pancreatic ductal adenocarcinoma. The study has been published in the journal eBioMedicine, from The Lancet group, and may represent an important step in the early detection and treatment of this type of tumour, with one of the worst prognoses. Doctors and researchers from the Digestology and Medical Oncology Departments at Hospital del Mar, as well as from the Spanish National Cancer Research Centre (Centro Nacional de Investigaciones Oncológicas; CNIO), the Ramón y Cajal Institute for Health Research (Instituto Ramón y Cajal de Investigación Sanitaria; IRYCIS) and CIBER also collaborated in the study.
Més informació "New diagnostic marker for pancreatic cancer identified"
17/11/2021 - Press release
Hospital del Mar, in collaboration with Roche, is working on a pioneering artificial intelligence tool to improve the diagnosis and prognosis of patients with small cell lung cancer, one of the cancers with the worst outlook. Based on digitised images from patient biopsies and survival data, the aim is to test whether the tool can reliably predict the benefit of the various treatments. This would allow more effective selection of the most appropriate type of treatment. At a later stage, the aim is to evaluate the specific mutations present in each tumour and to analyse whether digital imaging is capable of predicting these. Hospital del Mar, in collaboration with Roche, has initiated the development of a pioneering artificial intelligence device to improve the diagnosis and prognosis of patients suffering small cell lung cancer. This is one of the lung cancers with the worst prognosis and having such a reliable tool will allow medical teams to determine the best treatment for each type of patient.
Més informació "Artificial intelligence for selecting the best lung cancer treatment"
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