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Lipodystrophic syndromes due toLMNAmutations: recent developments on biomolecular aspects, pathophysiological hypotheses and therapeutic perspectives
- Source :
- Nucleus, Nucleus, 2018, 9 (1), pp.251-264. ⟨10.1080/19491034.2018.1456217⟩, Nucleus, European Nuclear Society, 2018, 9 (1), pp.251-264. ⟨10.1080/19491034.2018.1456217⟩
- Publication Year :
- 2018
- Publisher :
- Informa UK Limited, 2018.
-
Abstract
- International audience; Mutations in LMNA, encoding A-type lamins, are responsible for laminopathies including musculardystrophies, lipodystrophies, and premature ageing syndromes. LMNA mutations have been shownto alter nuclear structure and stiffness, binding to partners at the nuclear envelope or within thenucleoplasm, gene expression and/or prelamin A maturation. LMNA-associated lipodystrophicfeatures, combining generalized or partial fat atrophy and metabolic alterations associated withinsulin resistance, could result from altered adipocyte differentiation or from altered fat structure.Recent studies shed some light on how pathogenic A-type lamin variants could triggerlipodystrophy, metabolic complications, and precocious cardiovascular events. Alterations inadipose tissue extracellular matrix and TGF-beta signaling could initiate metabolic inflexibility.Premature senescence of vascular cells could contribute to cardiovascular complications. Inaffected families, metabolic alterations occur at an earlier age across generations, which couldresult from epigenetic deregulation induced by LMNA mutations. Novel cellular modelsrecapitulating adipogenic developmental pathways provide scalable tools for disease modelingand therapeutic screening.
- Subjects :
- 0301 basic medicine
Senescence
lipodystrophy
senescence
induced pluripotent stem cells
extracellular matrix
Adipose tissue
Biology
Bioinformatics
LMNA
03 medical and health sciences
Metreleptin
chemistry.chemical_compound
0302 clinical medicine
medicine
Humans
Epigenetics
[SDV.MHEP.EM] Life Sciences [q-bio]/Human health and pathology/Endocrinology and metabolism
Lamin A/C
epigenetics
integumentary system
Laminopathies
differentiation
Cell Biology
[SDV.MHEP.EM]Life Sciences [q-bio]/Human health and pathology/Endocrinology and metabolism
Lamin Type A
medicine.disease
adipose tissue
3. Good health
030104 developmental biology
chemistry
metreleptin
030220 oncology & carcinogenesis
Mutation
Anticipation (genetics)
anticipation
Lipodystrophy
Lamin
Subjects
Details
- ISSN :
- 19491042, 19491034, and 15811646
- Volume :
- 9
- Database :
- OpenAIRE
- Journal :
- Nucleus
- Accession number :
- edsair.doi.dedup.....5493aeb98ce0337b3bbc9f51fffd1c92