The United States of America, as Represented by the Secretary, Department of Health and Human Services

University of Michigan

The University of North Carolina at Chapel Hill

Progeria Research Foundation, Inc.

Brian C Capell

Francis S Collins

Leslie B Gordon

Channing J Der

Michael W Glynn

Adrienne Cox

Thomas Glover

Channing J c/o Lineberger CompCancer Ctr Der

Adrienne D c/o Dept Radiation Oncology Cox

Although it can be farnesylated, the mutant lamin A protein expressed in Hutchinson Gilford Progeria Syndrome (HGPS) cannot be defarnesylated because the characteristic mutation causes deletion of a cleavage site necessary for binding the protease ZMPSTE24 and effecting defarnesylation. The result is an aberrant farnesylated protein (called 'progerin') that alters normal lamin A function as a dominant negative, as well as assuming its own aberrant function through its association with the nuclear membrane. The retention of farnesylation, and potentially other abnormal properties of progerin and other abnormal lamin gene protein products, produces disease. Farnesyltransferase inhibitors (FTIs) (both direct effectors and indirect inhibitors) will inhibit the formation of progerin, cause a decrease in lamin A protein, and/or an increase prelamin A protein. Decreasing the amount of aberrant protein improves cellular effects caused by and progerin expression. Similarly, treatment with FTIs should improve disease status in progeria and other laminopathies. In addition, elements of atherosclerosis and aging in non-laminopathy individuals will improve after treatment with farnesyltransferase inhibitors.

Farnesyltransferase inhibitors for treatment of laminopathies, cellular aging and atherosclerosis

Although it can be farnesylated, mutant lamin A expressed in Hutchinson Gilford Progeria Syndrome cannot be defarnesylated; the characteristic mutation causes deletion of a cleavage site necessary for binding the protease ZMPSTE24 and effecting defarnesylation. The result is an aberrant farnesylated protein ('progerin') that alters normal lamin A function as a dominant negative, and assumes its own aberrant function through its association with the nuclear membrane. Retention of farnesylation, and potentially other abnormal properties of progerin and other abnormal lamin gene protein products, produces disease. Farnesyltransferase inhibitors (FTIs) will inhibit formation of progerin, cause a decrease in lamin A protein, and/or an increase prelamin A protein. Decreasing the amount of aberrant protein improves cellular effects caused by and progerin expression. Similarly, treatment with FTIs should improve disease status in progeria and other laminopathies. In addition, elements of atherosclerosis and aging in non-laminopathy individuals will improve after treatment with FTIs.

Although it can be farnesylated, the mutant lamin A protein expressed in Hutchison Gilford Progeria Syndrome (HGPS) cannot be defarnesylated because the characteristic mutation causes deletion of a cleavage site necessary for binding the protease ZMPSTE24 and effecting defarnesylation. The result is an aberrant farnesylated protein (called 'progerin') that alters normal lamin A function as a dominant negative, as well as assuming its own aberrant function through its association with the nuclear membrane. The retention of farnesylation, and potentially other abnormal properties of progerin and other abnormal lamin gene protein products, produces disease. Farnesyltransferase inhibitors (FTIs) (both direct effectors and indirect inhibitors) will inhibit the formation of progerin, cause a decrease in lamin A protein, and/or an increase prelamin A protein. Decreasing the amount of aberrant protein improves cellular effects caused by and progerin expression. Similarly, treatment with FTIs should improve disease status in progeria and other laminopathies. In addition, elements of atherosclerosis and aging in non-laminopathy individuals will improve after treatment with farnesyltransferase inhibitors.

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Brian C Capell