Generation of iPSCs from a Patient with the M694V Mutation in the MEFV Gene Associated with Familial Mediterranean Fever and Their Differentiation into Macrophages

Int J Mol Sci. 2024 Jun 1;25(11):6102. doi: 10.3390/ijms25116102.

Abstract

Familial Mediterranean fever (FMF) is a systemic autoinflammatory disorder caused by inherited mutations in the MEFV (Mediterranean FeVer) gene, located on chromosome 16 (16p13.3) and encoding the pyrin protein. Despite the existing data on MEFV mutations, the exact mechanism of their effect on the development of the pathological processes leading to the spontaneous and recurrent autoinflammatory attacks observed in FMF, remains unclear. Induced pluripotent stem cells (iPSCs) are considered an important tool to study the molecular genetic mechanisms of various diseases due to their ability to differentiate into any cell type, including macrophages, which contribute to the development of FMF. In this study, we developed iPSCs from an Armenian patient with FMF carrying the M694V, p.(Met694Val) (c.2080A>G, rs61752717) pathogenic mutation in exon 10 of the MEFV gene. As a result of direct differentiation, macrophages expressing CD14 and CD45 surface markers were obtained. We found that the morphology of macrophages derived from iPSCs of a patient with the MEFV mutation significantly differed from that of macrophages derived from iPSCs of a healthy donor carrying the wild-type MEFV gene.

Keywords: Familial Mediterranean fever; MEFV gene; differentiation; macrophages; patient-specific induced pluripotent stem cells.

MeSH terms

  • Cell Differentiation* / genetics
  • Familial Mediterranean Fever* / genetics
  • Familial Mediterranean Fever* / pathology
  • Humans
  • Induced Pluripotent Stem Cells* / metabolism
  • Macrophages* / metabolism
  • Male
  • Mutation*
  • Pyrin* / genetics

Substances

  • Pyrin
  • MEFV protein, human

Grants and funding

The cell reprogramming and characterization was funded by the Ministry of Science and Higher Education of the Russian Federation, Agreement No. 075-15-2021-1063/10. PBMC isolation and molecular-genetic characterization work was supported by the Higher Science and Education Committee of the Ministry of Science, Education, Culture and Sports of the Republic of Armenia, in the frames of the research project N 21SCG-1F010 and research grant provided by the Armenian Engineers and Scientists of America (AESA, PI: Dr. Roksana Zakharyan). The immunofluorescent imaging was performed using resources of the Common Facilities Center of Microscopic Analysis of Biological Objects, ICG SB RAS (https://ckp.icgen.ru/ckpmabo/, accessed on 13 March 2024), supported by the Budget project of the Institute of Cytology and Genetics (FWNR-2022-0015).