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Clone and expression of mutant M-CSF and its receptor from human leukemic cell line J6-1
- Source :
-
Leukemia Research . Apr2002, Vol. 26 Issue 4, p377. 6p. - Publication Year :
- 2002
-
Abstract
- Macrophage colony-stimulating factor (M-CSF) plays important roles in hematopoietic and immunologic systems. Some isoforms or mutations have been demonstrated including membrane-bound and cellular M-CSF, which associated with some leukemia, lymphoma and other solid tumors. We previously reported that the M-CSF-like membrane-associated factor (MAF-J6-1) and its receptor was found from human leukemic cell line J6-1. In this report, the cDNA of MAF-J6-1 and its receptor were cloned. The cDNA sequence of MAF-J6-1 shows a 768 bp open reading frame (ORF) with 99.2% homology to m-M-CSF, but six site mutations, including two synonymous mutations and four missense mutations. The cDNA of MAF-J6-1-R has a 2916 bp ORF shared 99.6% homology with M-CSF-R, but 13 site mutations, including six synonymous mutations and seven missense mutations. At the same time, a 1662 bp mutant s-M-CSF cDNA, which has 10 site mutations including three synonymous mutations and seven missense mutations, was cloned from J6-1 cells. The cDNAs of MAF-J6-1 and MAF-J6-1-R were inserted into a mammalian expression plasmid pTARGET and were expressed in COS-7 cells that demonstrated by their specific MAb. COS-7 cells transfected with MAF-J6-1-R show obvious protein tyrosine kinase (PTK) activity. Our present work shows that MAF-J6-1 and its receptor are mutations of M-CSF and its receptor. [Copyright &y& Elsevier]
- Subjects :
- *GENE expression
*HEMATOPOIESIS
*LEUKEMIA
Subjects
Details
- Language :
- English
- ISSN :
- 01452126
- Volume :
- 26
- Issue :
- 4
- Database :
- Academic Search Index
- Journal :
- Leukemia Research
- Publication Type :
- Academic Journal
- Accession number :
- 7752728
- Full Text :
- https://doi.org/10.1016/S0145-2126(01)00139-4