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Immunological considerations and challenges for regenerative cellular therapies.

ABSTRACT: The central goal of regenerative medicine is to replace damaged or diseased tissue with cells that integrate and function optimally. The capacity of pluripotent stem cells to produce unlimited numbers of differentiated cells is of considerable therapeutic interest, with several clinical trials underway. However, the host immune response represents an important barrier to clinical translation. Here we describe the role of the host innate and adaptive immune responses as triggers of allogeneic graft rejection. We discuss how the immune response is determined by the cellular therapy. Additionally, we describe the range of available in vitro and in vivo experimental approaches to examine the immunogenicity of cellular therapies, and finally we review potential strategies to ameliorate immune rejection. In conclusion, we advocate establishment of platforms that bring together the multidisciplinary expertise and infrastructure necessary to comprehensively investigate the immunogenicity of cellular therapies to ensure their clinical safety and efficacy.

SUBMITTER: Petrus-Reurer S

PROVIDER: S-EPMC8233383 | biostudies-literature | 2021 Jun

REPOSITORIES: biostudies-literature

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Immunological considerations and challenges for regenerative cellular therapies.

Petrus-Reurer Sandra S Romano Marco M Howlett Sarah S Jones Joanne Louise JL Lombardi Giovanna G Saeb-Parsy Kourosh K

Communications biology 20210625 1

The central goal of regenerative medicine is to replace damaged or diseased tissue with cells that integrate and function optimally. The capacity of pluripotent stem cells to produce unlimited numbers of differentiated cells is of considerable therapeutic interest, with several clinical trials underway. However, the host immune response represents an important barrier to clinical translation. Here we describe the role of the host innate and adaptive immune responses as triggers of allogeneic gra ...[more]

PMID: 34172826

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Project description:The field of regenerative medicine is growing rapidly with the introduction of new therapies that have the potential to treat and cure serious medical conditions, including rare diseases, for which there are no available treatments. In the United States, the development of novel medical products is regulated and guided by the Food and Drug Administration (FDA). As scientific and technological advances are discovered and adopted by the medical industrial enterprise, the FDA's implementation of policies that create a climate conducive to safe development and rapid availability of novel medical products is one of the pillars which support the Agency's mission of protecting and promoting the public health. With advancements in cell modifications and tissue engineering, innovative creation of biomaterials, adoption of three-dimensional bioprinting, and rapid development of human genome editing technologies, the need for Agency's work in ensuring that its science-based policies remain relevant and helpful in facilitating the availability of new treatments to the most vulnerable populations of patients becomes more pressing than ever before. In December 2016, Congress amended section 506 of the Food, Drug, and Cosmetic (FD&C) Act [21 U.S.C. 356] by adding a new section 506(g), which defines the categories of products considered to be regenerative medicine therapies. As further described by FDA [1], regenerative medicine therapies are considered to include cell therapies, therapeutic tissue engineering products, human cell and tissue products, and combination products using any such therapies, as well as gene therapies, including genetically modified cells that lead to a durable modification of cells or tissues. The development and approval of regenerative medicine therapies are regulated by FDA's Office of Tissues and Advanced Therapies (OTAT) in the Center for Biologics Evaluation and Research (CBER). In this review article, we present practical considerations for investigating regenerative medicine therapies intended for the treatment of rare diseases. The material presented may be useful to researchers who are undertaking the challenging task of finding and delivering new treatments for those in need.

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Immunological considerations and challenges for regenerative cellular therapies.

Publications

Immunological considerations and challenges for regenerative cellular therapies.

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