Amgen Inc.

Babru B Samal

Olaf B Kinstler

Robert A Bosselman

Timothy D Bartley

Pamela Hunt

Jakob M Bogenberger

Yitzhak Stabinsky

A progenitor B cell stimulating factor which promotes the formation of pre-B cells is described. DNA sequences encoding same and methods of production and purification of the factor are also disclosed. The factor is used in the treatment of hematopoietic disorders and in bone marrow transplantation.

Progenitor B cell stimulating factor

Disclosed are novel proteins, referred to as megakaryocyte growth and development factors (MGDFs; also generally referred to as Mpl ligands or thrombopoietin, that have a biological activity of stimulating the growth of megakaryocytes and augmenting the differentiation or maturation of megakaryocytes, ultimately to result in the production of platelets. MGDF derivatives comprising MGDF molecules attached to water soluble polymers, such as polyethylene glycol, are also disclosed, along with methods for their preparation. Also disclosed are processes for obtaining the MGDFs in homogeneous form from natural sources and producing them by recombinant genetic engineering techniques from mammals, including humans.

Mono-pegylated proteins that stimulate megakaryocyte growth and

Disclosed are novel proteins, referred to as megakaryocyte growth and development factors (MGDFs; also generally referred to as Mpl ligands), that have a biological activity of stimulating the growth of megakaryocytes and augmenting the differentiation or maturation of megakaryocytes, ultimately to result in the production of platelets. MGDF derivatives comprising MGDF molecules attached to water soluble polymers, such as polyethylene glycol, are also disclosed, along with methods for their preparation. The MGDF proteins and derivatives are useful in methods for treating mammals to increase platelets and/or megakaryocytes. Also disclosed are processes for obtaining the MGDFs in homogeneous form from natural sources and producing them by recombinant genetic engineering techniques from mammals, including humans.

Method for treating mammals with monopegylated proteins that stimulates

Nucleic acid encoding the progenitor B cell stimulating factor

This disclosure relates to a novel class of serine proteases isolated from a culture medium of fungus Tritirachium album. The serine proteases disclosed have a high degree of stability in detergent formulations. In addition, this disclosure relates to a process for producing such serine proteases using recombinant techniques.

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Moorpark, CA, United States of America

Babru B Samal