Nuclear envelopathies--raising the nuclear veil

Area of Science:

• Cell Biology
• Genetics
• Molecular Biology

Background:

• The nuclear envelope, comprising inner and outer membranes and nuclear pore complexes, historically viewed as a structural component.
• Emerging evidence reveals nuclear envelope proteins' roles in gene transcription and DNA replication.
• Mutations in nuclear envelope proteins lead to human diseases known as nuclear envelopathies.

Purpose of the Study:

• To review recent discoveries in nuclear envelopathies.
• To discuss proposed pathophysiological mechanisms underlying these diseases.
• To highlight the role of nuclear envelope proteins in gene transcription regulation.

Main Methods:

• Literature review of recent findings on nuclear envelopathies.
• Analysis of genetic mutations associated with nuclear envelopathies.
• Discussion of proposed pathophysiological mechanisms.

Main Results:

• Mutations in emerin, MAN1, lamin A/C, and lamin B receptor genes cause nuclear envelopathies.
• LMNA gene mutations result in laminopathies, a subset of nuclear envelopathies.
• Nuclear envelopathies present diverse clinical phenotypes, including myopathies, lipodystrophy, neuropathy, and premature aging.

Conclusions:

• Nuclear envelope proteins play fundamental roles beyond structural support, including gene regulation.
• Understanding nuclear envelope protein function is critical for both physiological and pathological states.
• Tissue-specific disease phenotypes may arise from the involvement of nuclear envelope proteins in gene transcription regulation.