The present invention relates to an in vitro culture of haematopoietic cells, wherein said haematopoietic cells differentiate to form granulocytes characterised by the ability to kill cancer cells. The invention also relates to said granulocytes, methods for identifying said haematopoietic cells and granulocytes, compositions and kits comprising the same, as well as uses of the same for treating cancer.

A blood product (10), a method for preparing the blood product, a blood product obtainable by the method and a blood product preparing container means. The blood product comprises components from whole blood, especially fibrin, thrombocytes and leukocytes. The blood product (10) comprises a first layer (21), a second layer (22) and a third layer (23). The second layer (22) is adjacent to the first layer (21) and the third layer (23). The first layer (21) defines a first outer surface (24) of the blood product (10) and the third layer (23) defining a second outer surface (25) of the blood product (10). The first layer (21) comprises a majority of fibrin, the second layer (22) comprises a majority of thrombocytes and the third layer (23) comprises a majority of leukocytes.

Compositions and methods for treating cancer, particularly leukemia, using a cytotoxic composition comprising monocytes activated by ?-glucan. The monocytes are preferably incubated with the ?-glucan and then processed to extract particles, such as microvesicles and exosomes from the treated monocytes to produce the cytotoxic composition. Preferably the cytotoxic composition comprises at least 50% exosomes having a size of 150 nm or less that are activated with ?-glucan. Zymosan is the preferred ?-glucan. The cytotoxic composition has an apoptosis effect. When a subject having cancer is treated according to preferred embodiments, the cytotoxic composition preferably induces a cytokine response in the subject's immune system. The combination of the cytotoxic composition and cytokine response are synergistic.

The disclosure provides methods for the long-term expansion of granulocyte-macrophage progenitors, the granulocyte-macrophage progenitors generated therefrom, and uses of the granulocyte-macrophage progenitors thereof.

The disclosure provides methods to genetically engineer granulocyte-macrophage progenitors (GMPs) to express a chimeric antigen receptor (CAR), and uses thereof, including for cancer immunotherapy.

Provided herein are compositions and methods for treating neurological disorders. In particular, provided herein are neutrophils that rescue damaged neurons, methods of making such neutrophils, and methods of promoting generation of such neutrophils in vivo.

A method for keeping leukocytes alive ex vivo or in vitro, comprising maintaining the leukocytes in a medium comprising from 3 to 10 mM of glucose, in hypoxic conditions with P(02)10 mM Hg.

The present invention relates to an in vitro culture of haematopoietic cells, wherein the haematopoietic cells differentiate to form granulocytes characterised by the ability to kill cancer cells. The invention also relates to the granulocytes, methods for identifying the haematopoietic cells and granulocytes, compositions and kits comprising the same, as well as uses of the same for treating cancer.

The present disclosure relates to a stage-specific process for manufacturing a population of neutrophils, such as chimeric antigen receptor-expressing (CAR-expressing) neutrophils (e.g., T cells and natural killer (NK) cells), from human pluripotent stem cells (hPSCs) using defined media and related compositions, kits, and methods of use (e.g., targeted cancer immunotherapy). Stage-specific processes for generating neutrophils and chimeric antigen receptor (CAR) neutrophils from human pluripotent stem cells (hPSCs) using chemically defined, feeder-free platforms and stage-specific morphogens; cell lines; pharmaceutical compositions; a method of treating cancer; and a kit are within the scopes of this disclosure.

The technology described herein is directed to compositions and cell culture media for increasing the lifespan of neutrophils. Also described are methods and kits for culturing neutrophils using the compositions or cell culture media. Such cultured neutrophils can be used to treat disorders such as neutropenia or microbial infections.