Because of their similarity to patient tumors, these models are an exceptional tool for testing the efficacy of new drugs, adapting treatments to tumor characteristics, unraveling resistance to certain treatments, and as a result limiting the need for clinical trials in patients. Institut Curie and Inserm medical oncologists, surgeons, pathologists and biologists collaborated on this work on mouse models which can now be extended to other types of cancers. The 25 breast tumor models are described in a study published in the 1 July 2007 issue of Clinical Cancer Research.
To help clinicians in their search for more effective treatments, Marie-France Poupon and her team in Institut Curie Inserm Unit 612 “Genotoxicology, signaling and experimental radiotherapy” have developed the largest ever series of human breasts cancers grafted into mice. This six-year study would not have been successful without close collaboration between Institut Curie and Inserm medical oncologists, surgeons, pathologists, and biologists.
These breast cancer xenografts in mice reproduce the genetic, genomic, and histological characteristics of the patient-derived tumor tissues. So they recapitulate features of the original tumors, such as overexpression of HER2 receptors, absence or presence of estrogen receptors, mutation of P53, and react identically to chemotherapy.
Twenty-five models of breast tumors in mice of different biological profiles have been established. These models are an excellent preclinical research tool and can be used to test the efficacy of new drugs and novel therapeutic combinations, as well as analyze the response to treatment and adapt it to the tumor characteristics. This will help in the design of clinical trials and hasten the development of new treatments.
This work is continuing within the framework of the creation of a Preclinical Investigation Laboratory in the Translational Research Department at the Institut Curie, with a view to extending this series of tumor models to other types of cancers, such as pediatric cancers, melanoma, lung cancer, ovarian cancer, and cancers of the bronchi, prostate, and colon.
Breast cancer is the most frequent cancer in women and affects one in ten women in the developed world. Every year in France there are 42 000 new cases. Between 1980 and 2000, the number of cases increased by almost 60%, largely as a result of increasingly efficient detection and because people are living longer. Breast cancer is most commonly detected in women aged between 50 and 69 years of age (half of all cases), but can occur at any age, albeit very rarely before the age of 25.
Mortality has declined because of earlier detection and improved treatments combining surgery, radiotherapy, and chemotherapy, depending on the tumor characteristics. When the diagnosis is made early enough, conservative surgery is possible: the tumor is removed and the breast conserved. When the tumor is larger, or is accompanied by extensive precancerous lesions, it is sometimes essential to remove the breast (mastectomy).
Bare bones: Making bones transparent
27.04.2017 | California Institute of Technology
Link Discovered between Immune System, Brain Structure and Memory
26.04.2017 | Universität Basel
More and more automobile companies are focusing on body parts made of carbon fiber reinforced plastics (CFRP). However, manufacturing and repair costs must be further reduced in order to make CFRP more economical in use. Together with the Volkswagen AG and five other partners in the project HolQueSt 3D, the Laser Zentrum Hannover e.V. (LZH) has developed laser processes for the automatic trimming, drilling and repair of three-dimensional components.
Automated manufacturing processes are the basis for ultimately establishing the series production of CFRP components. In the project HolQueSt 3D, the LZH has...
Reflecting the structure of composites found in nature and the ancient world, researchers at the University of Illinois at Urbana-Champaign have synthesized thin carbon nanotube (CNT) textiles that exhibit both high electrical conductivity and a level of toughness that is about fifty times higher than copper films, currently used in electronics.
"The structural robustness of thin metal films has significant importance for the reliable operation of smart skin and flexible electronics including...
The nearby, giant radio galaxy M87 hosts a supermassive black hole (BH) and is well-known for its bright jet dominating the spectrum over ten orders of magnitude in frequency. Due to its proximity, jet prominence, and the large black hole mass, M87 is the best laboratory for investigating the formation, acceleration, and collimation of relativistic jets. A research team led by Silke Britzen from the Max Planck Institute for Radio Astronomy in Bonn, Germany, has found strong indication for turbulent processes connecting the accretion disk and the jet of that galaxy providing insights into the longstanding problem of the origin of astrophysical jets.
Supermassive black holes form some of the most enigmatic phenomena in astrophysics. Their enormous energy output is supposed to be generated by the...
The probability to find a certain number of photons inside a laser pulse usually corresponds to a classical distribution of independent events, the so-called...
Microprocessors based on atomically thin materials hold the promise of the evolution of traditional processors as well as new applications in the field of flexible electronics. Now, a TU Wien research team led by Thomas Müller has made a breakthrough in this field as part of an ongoing research project.
Two-dimensional materials, or 2D materials for short, are extremely versatile, although – or often more precisely because – they are made up of just one or a...
20.04.2017 | Event News
18.04.2017 | Event News
03.04.2017 | Event News
27.04.2017 | Life Sciences
27.04.2017 | Physics and Astronomy
27.04.2017 | Earth Sciences