Engineering of Nano-based therapeutics for Optimized Outcome in Cancer Therapy

用于优化癌症治疗结果的纳米疗法工程

• 批准号: RGPIN-2017-04501
• 负责人: Chithrani, Devika
• 金额: $ 2.19万
• 依托单位: University of Victoria
• 依托单位国家: 加拿大
• 项目类别: Discovery Grants Program - Individual
• 财政年份: 2020
• 资助国家: 加拿大
• 起止时间: 2020-01-01 至 2021-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=711081
• 关键词: Engineering; Nano; based; therapeutics; Optimized

The field of nanotechnology is currently undergoing explosive development on many fronts. The technology is expected to generate innovations and play a critical role in nano-based cancer therapeutics. Among other nanoparticle (NP) systems, there has been tremendous progress made in the use of gold NPs (GNPs) in cancer therapy since they can be used as a radiation dose enhancer in radiation therapy and as well as an anticancer drug carrier in chemotherapy. However, we still do not know how to combine these two widely used cancer therapeutic therapy techniques using these properties of GNPs to cause the maximum damage to cancer cells. Hence, the goal of this proposed research program is to engineer a combination of GNP-mediated radiation therapy and chemotherapy (will be refereed to as chemoradiation) to yield a better outcome in cancer therapy. My research group has developed protocols to optimize GNP-mediated radiation therapy and GNP-mediated drug delivery through publication of 15 articles in the last four years. We believe that GNP-mediated chemoradiation would allow us to design a very aggressive treatment approach to kill cancer cells. In addition, most of the GNP-based radiation research has been focused on the use of photons. However, recent studies have shown promising results if we can use protons for radiation treatment instead of photons. The second goal of this proposed research program is to build a NP-based platform to elucidate the therapeutic outcome differences between photons vs protons using in vitro cell models. The outcome of this research would open up a whole new discussion on the use of proton therapy vs photon therapy in Canada, since proton therapy is barely used in Canada while it is being used in other parts of the world. This research offers three major strategic benefits to Canada. Firstly, the expected results are foundational for long-term research aiming at optimizing NP-based cancer therapeutics. The improved delivery of cancer therapeutics will reduce health care costs while improving the quality of life of cancer patients. Secondly, the results of this study will support Canada's leadership in natural sciences via the training of three PhD students and two MSc students, who will acquire problem-solving skills, independence, and expertise in cancer research. Such skills and knowledge are vital to helping Canada maintain and improve its position as one of largest nanobiotechnology clusters in North America. Thirdly, my lab is in a position to become a leader in the use of GNPs for cancer therapy. I was invited to be on the three-member expert panel at both AAPM and ASTRO (two major conferences). I am part of a major collaborative network between MD Anderson Cancer Centre, Harvard Medical School, and North Eastern University. This leading-edge work will enhance Canada's academic profile globally and provides personnel to a highly-skilled labor force.

纳米技术领域目前正在许多方面经历爆炸性的发展。该技术有望产生创新，并在纳米癌症治疗中发挥关键作用。在其他纳米颗粒（NP）系统中，在癌症治疗中使用金纳米颗粒（GNP）已经取得了巨大的进展，因为它们可以在放射治疗中用作放射剂量增强剂，以及在化疗中用作抗癌药物载体。然而，我们仍然不知道如何利用GNP的这些性质将这两种广泛使用的癌症治疗技术联合收割机结合起来，以对癌细胞造成最大的损伤。 因此，这项拟议研究计划的目标是设计GNP介导的放射治疗和化疗（将被称为放化疗）的组合，以在癌症治疗中获得更好的结果。在过去的四年里，我的研究小组通过发表15篇文章，开发了优化GNP介导的放射治疗和GNP介导的药物递送的方案。我们相信GNP介导的放化疗将使我们能够设计一种非常积极的治疗方法来杀死癌细胞。 此外，大多数基于GNP的辐射研究都集中在光子的使用上。然而，最近的研究表明，如果我们可以使用质子而不是光子进行放射治疗，则会产生有希望的结果。该研究计划的第二个目标是建立一个基于NP的平台，使用体外细胞模型阐明光子与质子之间的治疗结果差异。这项研究的结果将开启一个全新的讨论质子治疗与光子治疗在加拿大的使用，因为质子治疗在加拿大几乎没有使用，而它正在使用在世界其他地区。 这项研究为加拿大提供了三大战略利益。首先，预期的结果是长期研究的基础，旨在优化基于NP的癌症治疗。癌症治疗剂的改进递送将降低医疗保健成本，同时改善癌症患者的生活质量。其次，这项研究的结果将通过培训三名博士生和两名硕士生来支持加拿大在自然科学方面的领导地位，他们将获得解决问题的技能，独立性和癌症研究的专业知识。这些技能和知识对于帮助加拿大保持和提高其作为北美最大的纳米生物技术集群之一的地位至关重要。第三，我的实验室能够成为使用GNP治疗癌症的领导者。我被邀请参加AAPM和ASTRO（两个主要会议）的三人专家小组。我是MD安德森癌症中心、哈佛医学院和东北大学之间主要合作网络的一部分。这项前沿工作将提高加拿大在全球的学术形象，并为高技能劳动力提供人员。