abstract |
The present invention relates to the discovery that serpin a3n, a secreted protein, binds to granzyme B and inhibits its activity. The present invention thus provides a cell comprising a polynucleotide encoding a granzyme B inhibitory serpin, a pharmaceutical composition comprising a granzyme B inhibitory serpin or a polynucleotide encoding a granzyme B inhibitory serpin, granzyme B inhibitory Methods are provided for treating patients in need of immunosuppression by administering serpins, and methods for transplanting cells (eg, islet cells) that express granzyme B inhibitory serpins. |