Defective oligodendrocyte development and severe hypomyelination in PDGF-A knockout mice.
(1999) In Development: For advances in developmental biology and stem cells 126(3). p.457-467- Abstract
- There is a class of oligodendrocyte progenitors, called O-2A progenitors, that is characterized by expression of platelet-derived growth factor &agr;-receptors (PDGFR(&agr;)). It is not known whether all oligodendrocytes are derived from these PDGFRalpha-progenitors or whether a subset(s) of oligodendrocytes develops from a different, PDGFR alpha-negative lineage(s). We investigated the relationship between PDGF and oligodendrogenesis by examining mice that lack either PDGF-A or PDGF-B. PDGF-A null mice had many fewer PDGFR alpha-progenitors than either wild-type or PDGF-B null mice, demonstrating that proliferation of these cells relies heavily (though not exclusively) on PDGF-AA homodimers. PDGF-A-deficient mice also had reduced... (More)
- There is a class of oligodendrocyte progenitors, called O-2A progenitors, that is characterized by expression of platelet-derived growth factor &agr;-receptors (PDGFR(&agr;)). It is not known whether all oligodendrocytes are derived from these PDGFRalpha-progenitors or whether a subset(s) of oligodendrocytes develops from a different, PDGFR alpha-negative lineage(s). We investigated the relationship between PDGF and oligodendrogenesis by examining mice that lack either PDGF-A or PDGF-B. PDGF-A null mice had many fewer PDGFR alpha-progenitors than either wild-type or PDGF-B null mice, demonstrating that proliferation of these cells relies heavily (though not exclusively) on PDGF-AA homodimers. PDGF-A-deficient mice also had reduced numbers of oligodendrocytes and a dysmyelinating phenotype (tremor). Not all parts of the central nervous system (CNS) were equally affected in the knockout. For example, there were profound reductions in the numbers of PDGFR alpha-progenitors and oligodendrocytes in the spinal cord and cerebellum, but less severe reductions of both cell types in the medulla. This correlation suggests a close link between PDGFRalpha-progenitors and oligodendrogenesis in most or all parts of the CNS. We also provide evidence that myelin proteolipid protein (PLP/DM-20)-positive cells in the late embryonic brainstem are non-dividing cells, presumably immature oligodendrocytes, and not proliferating precursors. (Less)
Please use this url to cite or link to this publication:
https://lup.lub.lu.se/record/4021975
- author
- publishing date
- 1999
- type
- Contribution to journal
- publication status
- published
- subject
- keywords
- Proto-Oncogene Proteins, Platelet-Derived Growth Factor, Oligodendroglia, Myelin Sheath, Myelin Proteolipid Protein, Knockout, Mice, Central Nervous System, Cell Division, Cell Differentiation, Animals, Brain, Proto-Oncogene Proteins c-sis, Receptor, Platelet-Derived Growth Factor alpha, Receptors
- in
- Development: For advances in developmental biology and stem cells
- volume
- 126
- issue
- 3
- pages
- 457 - 467
- publisher
- The Company of Biologists Ltd
- external identifiers
-
- scopus:0033031266
- ISSN
- 1477-9129
- language
- English
- LU publication?
- no
- id
- a67b8b71-b2d4-44e0-986d-13189e8e931c (old id 4021975)
- alternative location
- http://www.ncbi.nlm.nih.gov/pubmed/9876175
- date added to LUP
- 2016-04-04 07:44:07
- date last changed
- 2022-03-30 22:39:55
@article{a67b8b71-b2d4-44e0-986d-13189e8e931c, abstract = {{There is a class of oligodendrocyte progenitors, called O-2A progenitors, that is characterized by expression of platelet-derived growth factor &agr;-receptors (PDGFR(&agr;)). It is not known whether all oligodendrocytes are derived from these PDGFRalpha-progenitors or whether a subset(s) of oligodendrocytes develops from a different, PDGFR alpha-negative lineage(s). We investigated the relationship between PDGF and oligodendrogenesis by examining mice that lack either PDGF-A or PDGF-B. PDGF-A null mice had many fewer PDGFR alpha-progenitors than either wild-type or PDGF-B null mice, demonstrating that proliferation of these cells relies heavily (though not exclusively) on PDGF-AA homodimers. PDGF-A-deficient mice also had reduced numbers of oligodendrocytes and a dysmyelinating phenotype (tremor). Not all parts of the central nervous system (CNS) were equally affected in the knockout. For example, there were profound reductions in the numbers of PDGFR alpha-progenitors and oligodendrocytes in the spinal cord and cerebellum, but less severe reductions of both cell types in the medulla. This correlation suggests a close link between PDGFRalpha-progenitors and oligodendrogenesis in most or all parts of the CNS. We also provide evidence that myelin proteolipid protein (PLP/DM-20)-positive cells in the late embryonic brainstem are non-dividing cells, presumably immature oligodendrocytes, and not proliferating precursors.}}, author = {{Fruttiger, M. and Karlsson, L. and Hall, A. C. and Abramsson, A. and Calver, A. R. and Ehrencrona, Hans and Willetts, K. and Bertold, C. H. and Heath, J. K. and Betsholtz, C. and Richardson, W. D.}}, issn = {{1477-9129}}, keywords = {{Proto-Oncogene Proteins; Platelet-Derived Growth Factor; Oligodendroglia; Myelin Sheath; Myelin Proteolipid Protein; Knockout; Mice; Central Nervous System; Cell Division; Cell Differentiation; Animals; Brain; Proto-Oncogene Proteins c-sis; Receptor; Platelet-Derived Growth Factor alpha; Receptors}}, language = {{eng}}, number = {{3}}, pages = {{457--467}}, publisher = {{The Company of Biologists Ltd}}, series = {{Development: For advances in developmental biology and stem cells}}, title = {{Defective oligodendrocyte development and severe hypomyelination in PDGF-A knockout mice.}}, url = {{http://www.ncbi.nlm.nih.gov/pubmed/9876175}}, volume = {{126}}, year = {{1999}}, }