PMID: 7023878Jan 1, 1981Paper

Regulation and localization of lymphocyte production in the bone marrow

Ciba Foundation Symposium
D G OsmondD M Rahal

Abstract

The homeostatic mechanisms which control B lymphocyte renewal in the bone marrow are unknown. Mouse bone marrow produces many small lymphocytes which develop surface IgM and other B lymphocyte properties. Putative precursors show cytoplasmic mu chains but earlier progenitors have been characterized. Some marrow small lymphocytes are long-lived recirculating B and T cells. [3H]Thymidine and IgM labelling in femoral marrow sections suggest that recirculating lymphocytes migrate mainly through the marrow periphery while indigenous lymphocytes may be formed peripherally and migrate centrally as they mature. Thus, the localization of lymphocytes appears to be non-random. The effects of possible regulatory factors on bone marrow small lymphocytes production have been examined by [3H]thymidine labelling and radioautography. Administration of anti-IgM antibodies in vivo eliminates all B lymphocytes but the marrow lymphocyte production rate remains unchanged. After sublethal X-irradiation the marrow shows an over-shoot B lymphocyte production, while the lymphocyte numbers in shielded marrow remain stable. In neonatally thymectomized or congenitally athymic mice marrow lymphocyte production is unaffected. Studies in germ-free and antigen...Continue Reading

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.