Title : A retinoid-resistant acute promyelocytic leukemia subclone expresses a dominant negative PML-RAR alpha mutation.

Pub. Date : 1997 Jun 15

PMID : 9192750






4 Functional Relationships(s)
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1 A retinoid-resistant acute promyelocytic leukemia subclone expresses a dominant negative PML-RAR alpha mutation. Retinoids PML nuclear body scaffold Homo sapiens
2 In the RA-resistant subclone, R4, we find an absence of ligand binding of PML-RAR alpha associated with a point mutation changing a leucine to proline in the ligand-binding domain of the fusion PML-RAR alpha protein. Leucine PML nuclear body scaffold Homo sapiens
3 In the RA-resistant subclone, R4, we find an absence of ligand binding of PML-RAR alpha associated with a point mutation changing a leucine to proline in the ligand-binding domain of the fusion PML-RAR alpha protein. Proline PML nuclear body scaffold Homo sapiens
4 In vitro expression of a cloned PML-RAR alpha with the observed mutation in R4 confirms that this amino acid change causes the loss of ligand binding, but the mutant PML-RAR alpha protein retains the ability to heterodimerize with RXR alpha and thus to bind to retinoid response elements (RAREs). Retinoids PML nuclear body scaffold Homo sapiens