Compositions containing macrophages and uses thereof

A - Human Necessities – 61 – K

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Details

A61K 35/14 (2006.01) A61K 35/34 (2006.01) A61P 9/04 (2006.01) A61P 9/10 (2006.01) C12N 5/06 (2006.01) C12N 5/08 (2006.01)

Patent

CA 2532444

The invention relates to the use of macrophages for the preparation of a drug for the treatment of a disease or of a lesion involving cellular apoptosis, reduction of the survival of cells and/or destruction of cells. The present invention also provides the use of macrophages for the preparation of a drug for the improvement of survival of a first type of cells, for the treatment of a disease or of a lesion involving the destruction of a second type of cells or of a tissue containing a second type of cells, said first type of cells being chosen among the group consisting of: precursor cells, stem cells and any type of differentiated cells. The inventors surprisingly showed that macrophages may inhibit precursor cells apoptosis in a cell to cell contact and may serve as stromal support for efficient cellular engraftment for tissue repair. They showed in particular that macrophages could inhibit myogenic precursor cell apoptosis.

L'invention concerne l'utilisation de macrophages pour préparer un médicament permettant de traiter une maladie ou une lésion qui implique une apoptose cellulaire, une réduction de la survie des cellules et/ou une destruction de celles-ci. L'invention concerne également l'utilisation de macrophages pour préparer un médicament permettant d'améliorer la survie d'un premier type de cellules afin de traiter une maladie ou une lésion impliquant la destruction d'un second type de cellules ou d'un tissu contenant ce second type de cellules. Le premier type de cellules est choisi dans le groupe constitué par des cellules précurseur et des cellules souches, et le second type de cellules est choisi dans le groupe constitué par des cellules précurseur, des cellules souches et un type quelconque de cellules différenciées. Les inventeurs ont montrés, de manière étonnante, que des macrophages peuvent inhiber l'apoptose de cellules précurseur dans une cellule et servir de support stromal pour une greffe cellulaire efficace afin d'effectuer une réparation tissulaire. Ils ont montré, en particulier, que ces macrophages pouvaient inhiber l'apoptose de cellules précurseur myogènes.

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