Abstract: The present invention relates to recombinant human interleukin-3 (hIL-3) variant or mutant proteins (muteins). These hIL-3 muteins contain amino acid substitutions and may also have amino acid deletions at both the N- and C-termini. The invention also relates to pharmaceutical compositions containing the hIL-3 muteins and methods for using them. Additionally, the present invention relates to recombinant expression vectors comprising nucleotide sequences encoding the hIL-3 muteins, related microbial expression systems, and processes for making the hIL-3 muteins using the microbial expression systems. Included in the present invention are deletion mutants of hIL-3 in which from 1 to 14 amino acids have been deleted from the N-terminus, and from 1 to 15 amino acids 119 to 133 have been deleted from the C-terminus, and which also contain amino acid substitutions in the polypeptide.

Abstract: The present invention relates to methods of ex-vivo expansion of hematopoietic cells by culturing hematopoietic cells in a growth medium comprising a chimera protein which comprises a variant of human interleukin-3 (hIL-3) which contains multiple amino acid substitutions and which may have portions of the native hIL-3 molecule deleted and a hematopoietic growth factor. The present invention also relates to the ex-vivo expansion of hematopoietic cells for gene therapy. Additionally, the present invention relates to the use of the expanded hematopoietic cells for treating patients having a hematopoietic disorder.

Abstract: The present invention relates to recombinant human interleukin-3 (hIL-3) variant or mutant proteins (muteins). These hIL-3 muteins contain amino acid substitutions and may also have amino acid deletions at both the N- and C-termini. The invention also relates to pharmaceuical compositions containing the hIL-3 muteins and methods for using them. Additionally, the present invention relates to recombinant expression vectors comprising nucleotide sequences encoding the hIL-3 muteins, related microbial expression systems, and processes for making the hIL-3 muteins using the microbial experession systems. Included in the presnt invention are deletion mutants of hIL-3 in which from 1 to 14 amino acids have been deleted from the N-terminus, and from 1 to 15 amino acids (a.a. 119 to 133) have been deleted from the C-terminus, and which also contain amino acid substitutions in the polypeptide.

Abstract: The present invention relates to recombinant human interleukin-3 (hIL-3) variant or mutant proteins (muteins). These hIL-3 muteins contain amino acid substitutions and may also have amino acid deletions at both the N- and C- termini. The invention also relates to pharmaceutical compositions containing the hIL-3 muteins and methods for using them. Additionally, the present invention relates to recombinant expression vectors comprising nucleotide sequences encoding the hIL-3 muteins, related microbial expression systems, and processes for making the hIL-3 muteins using the microbial expression systems.

Abstract: The present invention relates to human interleukin-3 (hIL-3) variant or mutant proteins (muteins) functionally co-administered with a other colony stimulating factors (CSF), cytokines, lymphokines, interleukins, hematopoietic growth factors or IL-3 variants.

Abstract: The present invention relates to recombinant human interleukin-3 (hIL-3) variant or mutant proteins (muteins). These hIL-3 muteins contain amino acid substitutions and may also have amino acid deletions at both the N- and C-termini. The invention also relates to pharmaceutical compositions containing the hIL-3 muteins and methods for using them. Additionally, the present invention relates to recombinant expression vectors comprising nucleotide sequences encoding the hIL-3 muteins, related microbial expression systems, and processes for making the hIL-3 muteins using the microbial expression systems. Included in the present invention are deletion mutants of hIL-3 in which from 1 to 14 amino acids have been deleted from the N-terminus, and from 1 to 15 amino acids (a.a.119 to 133) have been deleted from the C-terminus, and which also contain amino acid substitutions in the polypeptide.

Abstract: The present invention relates to recombinant human interleukin-3 (hIL-3) variant or mutant proteins (muteins). These hIL-3 muteins contain amino acid substitutions and may also have amino acid deletions at both the N- and C-termini. The invention also relates to pharmaceutical compositions containing the hIL-3 muteins and methods for using them. Additionally, the present invention relates to recombinant expression vectors comprising nucleotide sequences encoding the hIL-3 muteins, related microbial expression systems, and processes for making the hIL-3 muteins using the microbial expression systems. Included in the present invention are deletion mutants of hIL-3 in which from 1 to 14 amino acids have been deleted from the N-terminus, and from 1 to 15 amino acids (a.a.119 to 133) have been deleted from the C-terminus, and which also contain amino acid substitutions in the polypeptide.

Abstract: The present invention relates to human interleukin-3 (hIL-3) variant or mutant proteins (muteins) functionally co-administered with a other colony stimulating factors (CSF), cytokines, lymphokines, interleukins, hematopoietic growth factors or IL-3 variants.

Abstract: Disclosed are recombinant human interleukin-3 (hIL-3) variant or mutant proteins (muteins) having one to three amino acid substitutions in the core sequence (residues 15-125) of the native (133 amino acid) sequence of hIL-3. The muteins of the invention may also have deletions of 1 to 14 amino acids at the N-terminus and/or 1 to 15 amino acids at the C-terminus relative to the native hIL-3 sequence. Also within the scope of the invention are recombinant expression systems and methods for making the mutant hIL-3 polypeptides, as well as pharmaceutical compositions and methods for using them. The disclosed hIL-3 mutant polypeptides may have biological activities similar to or better than hIL-3 and, in some cases, may also have an improved side effect profile in therapeutic applications.

Abstract: The present invention relates to recombinant human interleukin-3 (hIL-3) variant or mutant proteins (muteins). These hIL-3 muteins contain amino acid substitutions and may also have amino acid deletions at both the N- and C- termini. The invention also relates to pharmaceutical compositions containing the hIL-3 muteins and methods for using them. Additionally, the present invention relates to recombinant expression vectors comprising nucleotide sequences encoding the hIL-3 muteins, related microbial expression systems, and processes for making the hIL-3 muteins using the microbial expression systems. Included in the present invention are deletion mutants of hIL-3 in which from 1 to 14 amino acids have been deleted from the N-terminus, and from 1 to 15 amino acids 119 to 133 have been deleted from the C-terminus, and which also contain amino acid substitutions in the polypeptide.