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Perales S, Sigamani V, Rajasingh S, Czirok A, Rajasingh J. Hutchinson-Gilford progeria patient-derived cardiomyocyte model of carrying LMNA gene variant c.1824 C > T. Cell Tissue Res 2023; 394:189-207. [PMID: 37572165 DOI: 10.1007/s00441-023-03813-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2023] [Accepted: 07/12/2023] [Indexed: 08/14/2023]
Abstract
Cardiovascular diseases, atherosclerosis, and strokes are the most common causes of death in patients with Hutchinson-Gilford progeria syndrome (HGPS). The LMNA variant c.1824C > T accounts for ~ 90% of HGPS cases. The detailed molecular mechanisms of Lamin A in the heart remain elusive due to the lack of appropriate in vitro models. We hypothesize that HGPS patient's induced pluripotent stem cell (iPSC)-derived cardiomyocytes (iCMCs) will provide a model platform to study the cardio-pathologic mechanisms associated with HGPS. To elucidate the effects of progerin in cardiomyocytes, we first obtained skin fibroblasts (SFs) from a de-identified HGPS patient (hPGP1, proband) and both parents from the Progeria Research Foundation. Through Sanger sequencing and restriction fragment length polymorphism, with the enzyme EciI, targeting Lamin A, we characterized hPGP1-SFs as heterozygous mutants for the LMNA variant c.1824 C > T. Additionally, we performed LMNA exon 11 bisulfite sequencing to analyze the methylation status of the progeria cells. Furthermore, we reprogrammed the three SFs into iPSCs and differentiated them into iCMCs, which gained a beating on day 7. Through particle image velocimetry analysis, we found that hPGP1-iCMCs had an irregular contractile function and decreased cardiac-specific gene and protein expressions by qRT-PCR and Western blot. Our progeria-patient-derived iCMCs were found to be functionally and structurally defective when compared to normal iCMCs. This in vitro model will help in elucidating the role of Lamin A in cardiac diseases and the cardio-pathologic mechanisms associated with progeria. It provides a new platform for researchers to study novel treatment approaches for progeria-associated cardiac diseases.
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Affiliation(s)
- Selene Perales
- Department of Bioscience Research, University of Tennessee Health Science Center, 847 Monroe Avenue, Memphis, TN 38163, USA
| | - Vinoth Sigamani
- Department of Bioscience Research, University of Tennessee Health Science Center, 847 Monroe Avenue, Memphis, TN 38163, USA
- Department of Microbiology, Immunology, and Biochemistry, University of Tennessee Health Science Center, 847 Monroe Avenue, Memphis, TN 38163, USA
| | - Sheeja Rajasingh
- Department of Bioscience Research, University of Tennessee Health Science Center, 847 Monroe Avenue, Memphis, TN 38163, USA
| | - Andras Czirok
- Department of Anatomy and Cell Biology, University of Kansas Medical Center, Kansas City, KS, USA
| | - Johnson Rajasingh
- Department of Bioscience Research, University of Tennessee Health Science Center, 847 Monroe Avenue, Memphis, TN 38163, USA.
- Department of Microbiology, Immunology, and Biochemistry, University of Tennessee Health Science Center, 847 Monroe Avenue, Memphis, TN 38163, USA.
- Department of Medicine-Cardiology, University of Tennessee Health Science Center, 847 Monroe Avenue, Memphis, TN, 38163, USA.
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