32 results about "Haematopoietic cell transplantation" patented technology

Methods and compositions are provided for combined transplantation of a solid organ and hematopoietic cells to an HLA mismatched recipient, where tolerance to the graft is established through development of a persistent mixed chimerism. An individual with persistent mixed chimerism, usually for a period of at least six months, is able to withdraw from the use of immunosuppressive drugs after a period of time sufficient to establish tolerance.

In one aspect, the present invention provides a method for treating cancer comprising tumor cell vaccination in combination with hematopoietic and immune cell transplantation. In some embodiments, the method involves autologous tumor cell vaccination prior to autologous hematopoietic and immune cell transplantation. In another aspect, the present invention provides a method of purifying tumor cells from a subject in preparation for vaccination.

The invention is directed to methods of using Flt3-Ligand in hematopoietic cell transplantation procedures using nonmyeloablative conditioning regimens. This abstract is provided for the sole purpose of enabling the reader to quickly ascertain the subject matter of the technical disclosure and is not intended to be used to interpret or limit the scope or meaning of the claims.

Antagonists of T cell migration are used to reduce GVHD in recipients of hematopoietic cell grafts. The administration of antagonists of T cell migration can be used in combination with conventional methods of bone marrow transplantation and in combination with the administration of donor leukocytes.

A method of long-term therapy using corticosteroids to treat tissue damage associated with graft-versus-host disease in a patient having undergone hematopoietic cell transplantation, and host-versus-graft disease in a patient having undergone organ allograft transplantation. The method includes orally administering to the patient a therapeutically effective amount of a topically active corticosteroids, such as beclomethasone dipropionate, from the 29th day until the 56th day following hematopoietic cell or organ allograft transplantation. Representative tissues include tissue of the intestine and liver, while representative tissue damage includes inflammation thereof.

A method for reducing mortality associated with GVHD by treating the patent with an oral BDP regimen that involves co-administration of: 1) a high dose of prednisone (about 1-2 mg / kg / day) for about 10 days, which is then tapered rapidly over the following 7 days to a physiological replacement dose of about 0.0625 mg / kg / day for the remainder of the treatment, and 2) about 4-12 mg oral BDP q.i.d. for about 50 days, where the BDP is administered in both immediate release and enteric coated preparations. Another method is for treating leukemia by performing hematopoietic cell transplantation followed by said regimen. A significant reduction in patient mortality is observed 200 days after the start of these treatments

Embodiments of the invention relate generally to methods of diagnosing, classifying, and / or identifying a patient's risk of developing graft versus host disease, including severe or lethal graft versus host disease, after receiving hematopoietic cellular transplantation, a transfusion or a transplantation, but before the onset of clinical symptoms.

Methods of reducing or preventing graft versus host disease in an allogeneic hematopoietic system reconstituting cells transplant recipient comprising administering to the recipient allogeneic hematopoietic system reconstituting cells in which the number of dendritic cells has been effectively reduced, thereby reducing or preventing graft versus host disease, are provided. Also provided are methods of increasing the chance of survival for an allogeneic hematopoietic system reconstituting cells transplant recipient comprising administering to the recipient allogeneic hematopoietic system reconstituting cells in which the number of dendritic cells has been effectively reduced, thereby improving the chance for survival of the recipient. Columns for preparing hematopoietic system reconstituting cells prior to their transplantation are disclosed that provide for the selection of CD34+ cells and the removal of dendritic cell progenitors.

Ligands for flt3 receptors capable of transducing self-renewal signals to regulate the growth, proliferation or differentiation of progenitor cells and stem cells are disclosed. The invention is directed to Flt3-ligand as an isolated protein, the DNA encoding the Flt3-ligand, host cells transfected with cDNAs encoding Flt3-ligand, compositions comprising Flt3-ligand and methods of using Flt3-ligand in hematopoietic cell transplantation.

Regulatory T cells (Treg) are engineered to express a chimeric antigen receptor (CAR), that specifically binds folate receptor beta; and are administered to an individual for treatment of inflammation at sites characterized by the presence of activated myeloid cells. Also provided are methods for utilized engineered T regulatory cells to enhance hematopoietic cell transplantation.

The present invention relates to a method of preparing hematopoietic cell graft or enriching a population of cells for hematopoietic stem cells that are capable of long-term multilineage engraftment and self-renewal. It also relates to hematopoietic grafts comprising said hematopoietic stem cells as well as their uses in therapy.

The purpose of the present invention is to create an immune tolerance-inducing agent used in therapy in which donor hematopoietic cells are transplanted into a recipient in order to induce immune tolerance in the recipient with respect to donor cells, tissue, or organs. By using an alpha-galactosylceramide-containing liposome in combination with a costimulatory-pathway-blocking substance, hematopoietic chimerism can be induced in the recipient by transplantation of donor hematopoietic cells, making it possible to induce immune tolerance in the recipient with respect to donor cells, tissue, or organs.

Cell culture systems for producing IL-33 induced T9 cells and methods of using the IL-33 induced T9 cells (T9IL-33 cells) in a cell therapy for increasing anti-tumoral activity following allogeneic hematopoietic cell transplantation (HCT) and / or treating graft-versus-host disease (GVHD) are disclosed herein. Further, methods of using the T9IL-33 cells, alone or in combination with allogeneic hematopoietic cell transplantation, are described herein for cancer treatment.

This disclosure relates to methods for preventing or reducing the risk of development of graft versus host disease (GVHD) in patients receiving hematopoietic cell transplantation (HCT) by particular methods of administering alpha-1 antitrypsin (A1AT or AAT) to patients both prior to and following and HCT procedure. The disclosure also relates to specific methods of treating acute GVHD (aGVHD) after HCT with A1AT.

The invention provides improved methods for preparing hematopoietic cells for transplantation and the resulting improved hematopoietic cell compositions. The invention further relates to improved culture media and methods of culturing, processing, modulating, and expanding blood cell products for hematopoietic transplantation.

The present invention relates to a method of preparing hematopoietic cell graft or enriching a population of cells for hematopoietic stem cells that are capable of long-term multilineage engraftment and self-renewal. It also relates to hematopoietic grafts comprising said hematopoietic stem cells as well as their uses in therapy.

A method of treating or preventing a sickle cell disease in a subject in need thereof is disclosed. The method comprising: (a) transplanting immature hematopoietic cells into the subject; and (b) administering to the subject a therapeutically effective amount of an isolated population of non-GVHD inducing anti-third party cells comprising cells having a central memory T-lymphocyte (Tcm) phenotype, the cells being tolerance inducing cells and capable of homing to the lymph nodes following transplantation.

Ligands for flt3 receptors capable of transducing self-renewal signals to regulate the growth, proliferation or differentiation of progenitor cells and stem cells are disclosed. The invention is directed to Flt3-ligand as an isolated protein, the DNA encoding the Flt3-ligand, host cells transfected with cDNAs encoding Flt3-ligand, compositions comprising Flt3-ligand and methods of using Flt3-ligand in hematopoietic cell transplantation.

Described herein are methods for enhancing engraftment of hematopoietic stem and progenitor cells using farnesyl compounds identified using a zebrafish model of hematopoietic cell engraftment. The compounds can be used to treat hematopoietic stem cells ex vivo prior to transplantation of the cells. Alternatively, the compounds can be administered to an individual undergoing cell transplantation.

The present invention discloses methods of preventing and treating acute GVHD and chronic GVHD after hematopoietic cell transplantation (HCT), as well as methods of in vivo augmenting expansion of donor CD8+ T cells in the lymphoid tissues in vivo after HCT and methods of augmenting recipient tissue expression of programmed death-ligand 1 (PD-L1, or B7H1) after HCT. The methods entail administering one or more doses of an effective amount of a therapeutic agent to a recipient simultaneously, immediately before, or immediately after HCT to temporarily deplete CD4+ T cells or to reduce serum IL-2. Some examples include an anti-CD4 antibody or an anti-CD4-meditope-immunotoxin, an anti-IL-2 antibody, an agent blocking IL-2R, and / or a PD-L1-Ig. One or more additional therapeutic agents such asIFN-y can be administered.

The present invention discloses a novel means capable of producing a blood chimeric animal in which a state of retaining blood cells originating in a heterologous animal at a high percentage is sustained for a long period of time. The method for producing a non-human animal that retains blood cells originating in a heterologous animal, according to the present invention, comprises transplanting hematopoietic cells of a heterologous animal into a non-human animal, in which hematopoietic cells the function of a gene that acts on the hematopoietic system is modified, The gene that acts on the hematopoietic system is, for example, Lnk gene, When a medium to large mammal is used as a recipient, the survival rate of hematopoietic cells originating in a heterologous animal is dramatically increased such that blood chimerism of 10% or more can be maintained even in a 16 month old animal.

A method of treating or preventing a T cell mediated autoimmune disease in a subject in need thereof is disclosed. The method comprising: (a) transplanting immature hematopoietic cells into the subject; and (b) administering to the subject a therapeutically effective amount of an isolated population of non-GVHD inducing anti-third party cells comprising cells having a central memory T-lymphocyte (Tcm) phenotype, the cells being tolerance inducing cells and capable of homing to the lymph nodes following transplantation.

Results from two randomized trials have shown that oral beclomethasone dipropionate (BDP) is effective for treatment of acute gastrointestinal graft-versus-host disease (GVHD). Here, we report results of a double-blind, randomized placebo-controlled phase II study designed to test the hypothesis that acute GVHD could be prevented by administration of oral BDP, beginning before hematopoietic cell transplantation (HCT) and continuing until day 75 after HCT. Study drug (BDP or placebo) was administered as 1 mg immediate-release formulation plus 1 mg delayed-release formulation orally four times daily. According to the primary endpoint, systemic glucocorticoid treatment for GVHD was given to 60 of the 92 participants (65%) in the BDP arm, versus 31 of 46 participants (67%) in the placebo arm. The secondary efficacy endpoints showed no statistically significant differences between the two arms. The proportion of participants who took at least 90% of the prescribed study drug during the first 4 weeks after HCT was 54% overall. Lower severity of mucositis strongly correlated with higher adherence to the schedule of study drug administration. Inconsistent adherence related to mucositis during recovery after myeloablative conditioning may have obscured a beneficial therapeutic effect in the current study.

A method of conditioning a subject for hematopoietic cell transplantation, wherein the method involves the use of a nitrogen mustard alkylating agent such as melphalan in an amount to achieve reduced-intensity conditioning.

A method for determining a personalized full dose of a melphalan compound (e.g., melphalan) in a reduced intensity conditioning regimen (RIC) prior to hematopoietic cell transplantation for a subject based on pharmacokinetic features of the melphalan compound administered to the subject at a test dose.

Described herein are methods for improving engraftment of hematopoietic cells in an individual following hematopoietic progenitor cell transplantation (e.g., via bone marrow or cord blood transplantation). Methods for increasing hematopoietic progenitor cell proliferation in individuals with bone marrow aplasia are also described. The methods involve administering an agent that inhibits adipogenesis, adipocyte growth, adipocyte differentiation and / or adipocyte proliferation.

Systems and methods for identification of pulmonary conditions accordance with embodiments of the invention are illustrated. One embodiment includes a method for identifying pulmonary conditions in hematopoietic cell transplantation patients, include obtaining a computed tomography (CT) scan of a patient's lungs, calculating a plurality of parametric response mapping (PRM) metrics, providing the plurality of PRM metrics to a machine learning model, obtaining a classification of the CT scan as indicating whether or not the patient's lungs present with a pulmonary condition, and providing a report comprising the classification.

Described herein is the use of a non-agonist ligand, particularly an antibody, specifically binding to GM-CSF or one of CD116, CD131 and the GM-CSF receptor composed of CD116 and CD131 for use in treatment of leukemia in a patient having undergone allo-HCT or in treatment of other complications arising as a consequence of hematopoietic cell transplantation from an immunologically non-identical donor.