Cellectis S.a.

Phillippe Duchateau

Jean-Charles Epinat

Frederic Paques

Emmanuel Lacroix

Sylvain Arnould

Patrick Chames

Julianne Smith

Murielle Derrien

The present invention relates to an engineered immune cell endowed with CD22 Chimeric Antigen Receptors (CD22 CAR) with a deletion in the TRAC gene that is able to redirect immune cell specificity and reactivity toward selected tumor cells. The engineered immune cells endowed with such CARs are particularly suited for treating relapsed refractory CD22 expressing cancers.

Universal anti-CD22 chimeric antigen receptor engineered immune cells

Use of meganucleases for cleaving DNA in a non-human or an isolated human cell and, in some instances, inducing homologous recombination in said cells and to its application for genome engineering and gene therapy.

Use of meganucleases for inducing homologous recombination ex vivo and in toto in vertebrate somatic tissues and application thereof

A monomer of an I-CreI meganuclease variant wherein said monomer comprises mutations in the amino acid sequence of SEQ ID NO: 34, wherein said mutations include, (i) at least one and up to five amino acid substitutions from residue Q44 to residue R70, said substitutions selected from the group consisting of substitutions at positions Q44, T46, Y66, R68 and R7; and (ii) at least one and up to six amino acid substitutions from residue Q26 to residue Q38 said substitutions selected from the group consisting of substitutions at positions Q26, K28, N30, S32, Y33 and Q38, and wherein said monomer when in dimeric form binds and cleaves a DNA target sequence. Said dimeric forms include homodimeric, heterodimeric and single-chain I-CreI meganuclease variants.

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Cerny, France

Phillippe Duchateau