Related Experiment Video

Updated: Sep 21, 2026

Granulocyte-dependent Autoantibody-induced Skin Blistering
12:23

Granulocyte-dependent Autoantibody-induced Skin Blistering

Published on: October 12, 2012

Plectin deficiency results in muscular dystrophy with epidermolysis bullosa

F J Smith1, R A Eady, I M Leigh

  • 1Department of Anatomy and Physiology, Medical Sciences Institute, University of Dundee, UK.

Nature Genetics
|August 1, 1996
PubMed

Insights

Gene mutations in plectin, a protein anchoring the cytoskeleton to membranes, cause autosomal recessive muscular dystrophy and epidermolysis bullosa simplex. This links muscle and skin fragility to plectin deficiency.

Area of Science:

  • Molecular Biology
  • Genetics
  • Dermatology

Background:

  • Plectin is a large, multifunctional cytoskeleton protein crucial for cell structure.
  • Mutations in structural proteins can lead to complex genetic disorders affecting multiple tissues.

Purpose of the Study:

  • To investigate the genetic cause of autosomal recessive muscular dystrophy with skin blistering (epidermolysis bullosa simplex).
  • To identify the specific gene and mutation responsible for this combined phenotype.

Main Methods:

  • Antibody staining to detect plectin absence in affected individuals.
  • Genetic analysis, including gene mapping to chromosome 8q24.13-qter.
  • Identification of mutations in plectin cDNA via sequencing.

Main Results:

  • Affected individuals from four families showed a complete absence of plectin.
  • The human plectin gene was localized to chromosome 8q24.13-qter, with disease segregation observed.
  • A homozygous frameshift mutation in the plectin gene was identified.

Conclusions:

  • Mutations in the plectin gene are a cause of autosomal recessive muscular dystrophy with epidermolysis bullosa simplex.
  • Absence of plectin explains the simultaneous structural failure in both muscle and skin tissues.
  • This finding highlights plectin's essential role in maintaining tissue integrity.

More Related Videos

CRISPR/Cas9 Technology in Restoring Dystrophin Expression in iPSC-Derived Muscle Progenitors07:44

CRISPR/Cas9 Technology in Restoring Dystrophin Expression in iPSC-Derived Muscle Progenitors

Published on: September 14, 2019

Detection of Nuclear Blebbing and DNA Leakage in Mammalian Cells by Immunofluorescence06:23

Detection of Nuclear Blebbing and DNA Leakage in Mammalian Cells by Immunofluorescence

Published on: January 17, 2025

Related Concept Videos

Pleiotropy01:47

Pleiotropy

Pleiotropy is the phenomenon in which a single gene impacts multiple, seemingly unrelated phenotypic traits. For example, defects in the SOX10 gene cause Waardenburg Syndrome Type 4, or WS4, which can cause defects in pigmentation, hearing impairments, and an absence of intestinal contractions necessary for elimination. This diversity of phenotypes results from the expression pattern of SOX10 in early embryonic and fetal development. SOX10 is found in neural crest cells that form melanocytes,...
Cytoskeletal Linker Proteins - Plakins01:09

Cytoskeletal Linker Proteins - Plakins

Plakins are large proteins with binding domains for microtubules, microfilaments, intermediate filaments, and membrane-associated protein complexes at cell junctions. Plakin functions are evolutionarily conserved and are primarily involved in organizing the different components of the cytoskeleton by crosslinking them to each other and connecting them to the cell-matrix and cell adhesion complexes. They are also known to interact with signal transducers, serve as scaffolds for signaling...
Lysosomal Hydrolases01:22

Lysosomal Hydrolases

Lysosomes are the site for the degradation of macromolecules and biological polymers released during membrane trafficking events such as secretory, endocytic, autophagic, and phagocytic pathways. The membrane-enclosed area of the lysosome, called the lumen, contains hydrolytic enzymes active in an acidic environment. These acid hydrolases are functional at a pH between 4.5 and 5 and are involved in cellular processes such as cell signaling, energy metabolism, restoration of the plasma membrane,...
Satellite Stem Cells and Muscular Dystrophy01:21

Satellite Stem Cells and Muscular Dystrophy

Satellite stem cells or myosatellite cells are quiescent stem cells that Alexander Mauro first identified in 1961. These cells are located between the sarcolemma, the plasma membrane of muscle fibers, and the basal lamina, the connective tissue sheath covering it. These mononucleated cells are activated in response to muscle injury, can transform into myoblasts, and may form or repair muscle fibers. Myosatellite cells can provide additional myonuclei for muscle regeneration or return to a...
Desmosomes01:05

Desmosomes

The term desmosome derives from the Greek words "desmo" and "soma" meaning "adhesion bodies." This structure was first observed during the late 1800s and described as small, dense nodules in the epidermis. Desmosomes are button-like structures that help form an interlinked network of intermediate filaments across the cells. These junctions are  essential to hold cells together under mechanical stress and to maintain tissue integrity. Desmosomes are multi-protein complexes comprising desmosomal...
Disorders of the Skeletal Muscle01:28

Disorders of the Skeletal Muscle

The clinical conditions affecting the skeletal muscle tissue are broadly categorized as musculoskeletal and neuromuscular disorders.
Musculoskeletal disorders
Musculoskeletal disorders involve injuries and conditions affecting the skeletal muscles and associated connective tissues. These disorders can arise from acute biomechanical stresses or chronic overuse and can occur across different age groups. Common injuries include sprains, fractures, and muscular strains, often resulting from...