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dc.contributor.authorHayes, Sandra M.
dc.contributor.authorShultz, Leonard D.
dc.contributor.authorGreiner, Dale L.
dc.date2022-08-11T08:09:40.000
dc.date.accessioned2022-08-23T16:39:37Z
dc.date.available2022-08-23T16:39:37Z
dc.date.issued1992-03-01
dc.date.submitted2012-03-29
dc.identifier.citationDev Immunol. 1992;2(3):191-205.
dc.identifier.issn1026-7905 (Linking)
dc.identifier.pmid1627951
dc.identifier.pmid1627951
dc.identifier.urihttp://hdl.handle.net/20.500.14038/39514
dc.description.abstractMice homozygous for the viable motheaten (me(v)) allele manifest abnormalities in thymocytopoiesis, are severely immunodeficient, and develop autoimmune disorders early in life. Premature thymic involution occurs in me(v)/me(v) mice, and their bone marrow prothymocytes are unable to repopulate the thymus of adoptive recipients following intravenous (i.v.) transfer. However, analysis of thymocytopoiesis following intrathymic (i.t.) adoptive transfer of bone marrow from me(v)/me(v) mice demonstrates the presence of normal numbers of prothymocytes. To investigate intrathymic development in me(v)/me(v) mice, we determined intrathymic precursor cell number and activity. Dual labeling analyses showed that an involuted me(v)/me(v) thymus is relatively enriched (fivefold) in CD4-CD8- thymocytes (intrathymic precursor phenotype) compared with wild-type (+/+) thymus. However, thymocytes from me(v)/me(v) mice were deficient in precursor activity when adoptively transferred i.t. into irradiated recipients. Thymocytes recovered from the involuted thymus of aged or steroid-treated normal mice also displayed reduced precursor activity. However, the phenotypic profile of thymocyte subsets from steroid-treated mice was enriched in single positive cells (mature phenotype) and was distinctly different from the subset distribution of thymocytes in me(v)/me(v) and aged mice. These results suggest that intrathymic precursor activity in me(v)/me(v) mice is decreased, and may be reflective of decreased prothymocyte seeding to the thymus in vivo. In addition, the results suggest that the thymic involution in me(v)/me(v) mice is not due solely to effects of corticosteroids.
dc.language.isoen_US
dc.relation<a href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=pubmed&cmd=Retrieve&list_uids=1627951&dopt=Abstract">Link to Article in PubMed</a>
dc.subjectAnimals
dc.subjectBone Marrow Transplantation
dc.subject*CD4-CD8 Ratio
dc.subjectCell Count
dc.subjectDexamethasone
dc.subjectMice
dc.subjectMice, Inbred C57BL
dc.subjectMice, Mutant Strains
dc.subjectThymus Gland
dc.subjectLife Sciences
dc.subjectMedicine and Health Sciences
dc.titleThymic involution in viable motheaten (me(v)) mice is associated with a loss of intrathymic precursor activity
dc.typeJournal Article
dc.source.journaltitleDevelopmental immunology
dc.source.volume2
dc.source.issue3
dc.identifier.legacyfulltexthttps://escholarship.umassmed.edu/cgi/viewcontent.cgi?article=3309&amp;context=oapubs&amp;unstamped=1
dc.identifier.legacycoverpagehttps://escholarship.umassmed.edu/oapubs/2309
dc.identifier.contextkey2710624
refterms.dateFOA2022-08-23T16:39:38Z
html.description.abstract<p>Mice homozygous for the viable motheaten (me(v)) allele manifest abnormalities in thymocytopoiesis, are severely immunodeficient, and develop autoimmune disorders early in life. Premature thymic involution occurs in me(v)/me(v) mice, and their bone marrow prothymocytes are unable to repopulate the thymus of adoptive recipients following intravenous (i.v.) transfer. However, analysis of thymocytopoiesis following intrathymic (i.t.) adoptive transfer of bone marrow from me(v)/me(v) mice demonstrates the presence of normal numbers of prothymocytes. To investigate intrathymic development in me(v)/me(v) mice, we determined intrathymic precursor cell number and activity. Dual labeling analyses showed that an involuted me(v)/me(v) thymus is relatively enriched (fivefold) in CD4-CD8- thymocytes (intrathymic precursor phenotype) compared with wild-type (+/+) thymus. However, thymocytes from me(v)/me(v) mice were deficient in precursor activity when adoptively transferred i.t. into irradiated recipients. Thymocytes recovered from the involuted thymus of aged or steroid-treated normal mice also displayed reduced precursor activity. However, the phenotypic profile of thymocyte subsets from steroid-treated mice was enriched in single positive cells (mature phenotype) and was distinctly different from the subset distribution of thymocytes in me(v)/me(v) and aged mice. These results suggest that intrathymic precursor activity in me(v)/me(v) mice is decreased, and may be reflective of decreased prothymocyte seeding to the thymus in vivo. In addition, the results suggest that the thymic involution in me(v)/me(v) mice is not due solely to effects of corticosteroids.</p>
dc.identifier.submissionpathoapubs/2309
dc.contributor.departmentDepartment of Medicine, Diabetes Division
dc.source.pages191-205


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