Variant guinea pig L-asparaginases which are truncated and humanized are described as are fusion proteins containing the L-asparaginase and use of the L-asparaginases in the treatment of cancers such as acute lymphoblastic leukemia and acute myeloid leukemia.

Variant guinea pig L-asparaginases which are truncated and humanized are described as are fusion proteins containing the L-asparaginase and use of the L-asparaginases in the treatment of cancers such as acute lymphoblastic leukemia and acute myeloid leukemia.

Described herein are methods and compositions for treating cancer. Aspects of the invention relate to determining if a biological sample obtained from a subject for GSK3a bodies (puncta), e.g., in response to asparaginase treatment, and administering to a subject having cancer an asparaginase and an agent that inhibits GSK3α to a subject who has been identified as forming GSK3α-positive bodies.

Described herein are methods and compositions for treating cancer. Aspects of the invention relate to determining if a biological sample obtained from a subject for GSK3a bodies (puncta), e.g., in response to asparaginase treatment, and administering to a subject having cancer an asparaginase and an agent that inhibits GSK3α to a subject who has been identified as forming GSK3α-positive bodies.

Embodiments disclosed include systems, devices, and methods for analysis of samples containing particles used for gene delivery to determine a quality of the sample and/or an indication that the gene delivery particles are in a full, partial, and/or empty state. The present disclosure also relates to determining a protein and/or NA content in samples with known proportions of gene delivery particles in a full, partial, and/or empty state and based on the determination, establish a relationship between NA content and proportions of gene delivery particles in a full state. The present disclosure also relates to using such an established relationship to predict a proportion of the gene delivery particles in a full, partial, and/or empty state in test samples having the gene delivery particles in an unknown state.

Disclosed is a mutant strain having improved aromatic amino acid production capability as a result of the inactivation or weakening of activity of asparaginase which is expressed by ansB gene.

Disclosed is a mutant strain having improved aromatic amino acid production capability as a result of the inactivation or weakening of activity of asparaginase which is expressed by ansB gene.

Disclosed herein is an endotoxin-free asparaginase enzyme. Also disclosed are methods of using the disclosed enzyme to treat subjects with a disease treatable by depletion of asparagine. For example, the disclosed endotoxin-free asparaginase enzyme is useful in the treatment or the manufacture of a medicament for use in the treatment of acute lymphoblastic leukemia (ALL) in both adults and children, as well as other conditions where asparagine depletion is expected to have a useful effect.

Disclosed herein is an endotoxin-free asparaginase enzyme. Also disclosed are methods of using the disclosed enzyme to treat subjects with a disease treatable by depletion of asparagine. For example, the disclosed endotoxin-free asparaginase enzyme is useful in the treatment or the manufacture of a medicament for use in the treatment of acute lymphoblastic leukemia (ALL) in both adults and children, as well as other conditions where asparagine depletion is expected to have a useful effect.

A non-naturally occurring cell comprising an inoperative genomic asparaginase (Aspg) gene and an inoperative glutamine synthetase (Gs) gene, wherein the cell has been transfected with a controllably expressed gene encoding an enzyme having asparaginase activity, a controllably expressed gene encoding an enzyme having glutamine synthetase activity, and a controllably expressed gene encoding a heterologous protein of interest.