PMID: 6984393Jan 1, 1980Paper

Erythroid-potentiating activity: characterization and target cells

Experimental Hematology
C E GauwerkyD W Golde

Abstract

We established a human T-lymphoblast cell line (Mo) that produces factors stimulating the proliferation of hematopoietic cells. These include a colony-stimulating factor for normal human granulocytes and macrophages, and a factor with erythroid-potentiating activity (EPA) that enhances the proliferation of normal human erythroid progenitors in vitro. Erythroid-potentiating activity has been partially purified and characterized. It is an acidic glycoprotein of 45,000 daltons molecular weight and it has remarkable heat stability. Erythroid-potentiating activity is physically separable from the colony-stimulating factor. Partially purified EPA was found to stimulate the proliferation of human K-562 and murine Friend erythroleukemia cells. These erythroleukemia cell lines may therefore prove useful for studying the action of EPA on target cells. Erythroid-potentiating factors from other human and murine sources stimulated erythroleukemia cell proliferation in a manner indicating some species restriction. Purification and structural analysis of the EPA molecule will ultimately be required in order to determine the details of its biologic action and to define its relationship to other erythropoietic factors.

Related Concepts

Trending Feeds

COVID-19

Coronaviruses encompass a large family of viruses that cause the common cold as well as more serious diseases, such as the ongoing outbreak of coronavirus disease 2019 (COVID-19; formally known as 2019-nCoV). Coronaviruses can spread from animals to humans; symptoms include fever, cough, shortness of breath, and breathing difficulties; in more severe cases, infection can lead to death. This feed covers recent research on COVID-19.

Blastomycosis

Blastomycosis fungal infections spread through inhaling Blastomyces dermatitidis spores. Discover the latest research on blastomycosis fungal infections here.

Nuclear Pore Complex in ALS/FTD

Alterations in nucleocytoplasmic transport, controlled by the nuclear pore complex, may be involved in the pathomechanism underlying multiple neurodegenerative diseases including Amyotrophic Lateral Sclerosis and Frontotemporal Dementia. Here is the latest research on the nuclear pore complex in ALS and FTD.

Applications of Molecular Barcoding

The concept of molecular barcoding is that each original DNA or RNA molecule is attached to a unique sequence barcode. Sequence reads having different barcodes represent different original molecules, while sequence reads having the same barcode are results of PCR duplication from one original molecule. Discover the latest research on molecular barcoding here.

Chronic Fatigue Syndrome

Chronic fatigue syndrome is a disease characterized by unexplained disabling fatigue; the pathology of which is incompletely understood. Discover the latest research on chronic fatigue syndrome here.

Evolution of Pluripotency

Pluripotency refers to the ability of a cell to develop into three primary germ cell layers of the embryo. This feed focuses on the mechanisms that underlie the evolution of pluripotency. Here is the latest research.

Position Effect Variegation

Position Effect Variagation occurs when a gene is inactivated due to its positioning near heterochromatic regions within a chromosome. Discover the latest research on Position Effect Variagation here.

STING Receptor Agonists

Stimulator of IFN genes (STING) are a group of transmembrane proteins that are involved in the induction of type I interferon that is important in the innate immune response. The stimulation of STING has been an active area of research in the treatment of cancer and infectious diseases. Here is the latest research on STING receptor agonists.

Microbicide

Microbicides are products that can be applied to vaginal or rectal mucosal surfaces with the goal of preventing, or at least significantly reducing, the transmission of sexually transmitted infections. Here is the latest research on microbicides.