MEMORY T CELLS AS ADOPTIVE CELL THERAPY FOR VIRAL INFECTIONS
PCT/EP2021/076516; EP20382850
The present invention refers to a cell suspension comprising at least 90% of CD45RA- memory T cells, characterized in that the memory T cells are derived from blood of convalescent patients recovered from an infection with a respiratory pathogen and have specific lymphocyte antiviral reactivity against its antigens, for use in the treatment of immunocompromised patients suffering from lymphopenia.

The inventors of the present invention have initially identified and characterized a cell population of T-lymphocyte memory cells which specifically attack the SARS-CoV-2 virus but can be also useful for other viral diseases and may i) discharge patients from the hospital in few days or ii) used as prophylactic measure to protect vulnerable populations. Infusion of these cells is feasible, remains safe because low alloreactivity capacity, when at least one HLA marker coincides with the host, keeping a functional T cell population which provides passive immunity against pathogens, which could be an effective living antiviral drug against SARS-COV-2. Memory T-lymphocytes specific for SARS-CoV-2 may also be cryopreserved and thawed keeping its properties and defining a pharmaceutical “off-the-self ’ product available when needed.



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