Radiotherapy

2017 – Abstract – 13th Journées cancéropole GSO – HfO2 nanoparticles in solid tumors

The enclosed abstract was presented at the 13th Journées cancéropole Grand Sud-Ouest at Poitiers. The abstract Hafnium oxide nanoparticles as an emergent promising treatment for solid tumors describes how hafnium oxide nanoparticles were designed at the nanoscale in the form of crystalline 50nm-particles to efficiently absorb ionizing radiation and increase the radiation dose deposited – “hot spots” of energy deposit – from within the tumor cells for efficient cell killing. […]

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2018 – ESTRO – Hafnium Oxide Nanoparticles and Radiotherapy: A Promising New Treatment Strategy

With recent advances in radiation delivery techniques, an increasing number of cancer patients undergo radiotherapy. However, due to the non-targeted nature of radiotherapy, doses are limited by potential toxicity to surrounding normal tissue. Thus, a major challenge remains to develop new strategies to improve the tumor selectivity of radiation therapy. […]

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2017 – Abstract – THNO – NBTXR3 in combination with IMRT in patients with locally advanced HNSCC

At the 2017 THNO in Nice, France, prof. C. Le Tourneau presented preliminary results of NBTXR3 in patients suffering from HNSCC. The treatment was associated with a positive safety profile, and preliminary effiacy evaluation, the local Complete Response rate is 83 % (dose level15% and 22%), with a duration of response of 22 months. […]

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2017 – Abstract – CTOS – NBTXR3 induces antitumoral immune response in human STS

The enclosed abstract was presented at the “2017 Connective Tissue Oncology Society Annual Meeting (CTOS), Maui, Hawaii”. The abstract “NBTXR3 Treatment Induces Antitumoral Immune Response in Human Soft Tissue Sarcoma” describes how NBTXR3 activated by RT triggers an enhanced adaptive immune response and contributes to transform “cold” tumor into “hot” tumor.

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2017 – Abstract SITC Conference Maryland – Clinical

Soft tissue sarcoma (STS) is a large and heterogeneous group of malignant mesenchymal neoplasms characterized by a strong tendency toward local recurrence and metastatic spreading. Consistently, the immune microenvironment in sarcomas is highly variable. A new class of material with high electron density, hafnium oxide, was designed at the nanoscale to efficiently absorb ionizing radiation […]

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2017 – Abstract – 35th CFS – Hafnium Oxide Nanoparticles: An Emergent Promising Treatment for Solid Tumors

Hafnium oxide nanoparticles: an emergent promising treatment for solid tumors To improve tumor response, radiotherapy (RT) has been combined with chemical agents, radiosensitizers and monoclonal antibodies. However, the complexity of these associations in terms of pharmacology, local control, clinical outcome benefits or patient quality of life underlines the need for the development of new therapeutic approaches. […]

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2017 – Abstract Conference Immunotherapy Radiotherapy Combinations NYC

Hafnium oxide, an electron-dense material, was designed at the nanoscale to increase the radiation dose deposited from within the cancer cells: “Hot spot” of energy deposit where the nanoparticles are when exposed to radiation therapy (RT). Preclinical studies have demonstrated increase of cancer cells killing in vitro and marked antitumor efficacy in vivo with presence of these nanoparticles […]

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2015 – Clinical Sciences and Drug Discovery Abstract – Use of metals as nano-sized radiation enhancers – Pottier et al.

Since the discovery of cisplatin about 40 years ago, the design of innovative metal-based anticancer drugs is a growing area of research. Metal elements offer specific characteristics due to their intrinsic properties and could be used in relation to their final state: a metal complex, a radionuclide, a metal-based nanoparticle product. Transition metal coordination complexes interact with cell molecular targets, affecting biochemical functions resulting in cancer cell destruction. Radionuclides are another way to use metals as anticancer therapy. The metal nucleus of the unstable radionuclide becomes stable by emitting energy. The biological effect in different tissues is obtained by the absorption of this energy from the radiation emitted by the radionuclide, the principal target generally agreed for ionizing radiations being DNA. A new area of clinical research is now emerging using the same experimental metal elements, but in a radically different manner: metals and metal oxides used as crystalline nanosized radiation enhancers particles. The use of metals as a high electron density material tailored at the nanoscale when exposed to radiotherapy is a unique approach that can allow entry to the cell and make feasible the absorption/deposition of a high-energy dose within the tumor cell (on/off activity). Therefore, high electron density metal or metal oxide nanoparticles may bring well known physical mode of action, that of radiotherapy, within malignant cells and achieve the paradigm of local cancer treatment.

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