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Laminin-11.

J H Miner¹, B L Patton

¹Department of Medicine/Renal Division, Washington University School of Medicine, St. Louis, MO 63110, USA. minerj@thalamus.wustl.edu

The International Journal of Biochemistry & Cell Biology

|September 11, 1999

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Laminin-11 is crucial for kidney filtration and neuromuscular synapse development. Its absence causes severe defects, highlighting its role in basement membrane structure and cell signaling.

Area of Science:

Biochemistry
Cell Biology
Developmental Biology

Background:

Laminins are essential glycoproteins in basement membranes, vital for tissue structure and function.
Eleven known laminin isoforms exist, each a heterotrimer of alpha, beta, and gamma chains.
Laminin-11 (alpha5beta2gamma1) exhibits unique expression and functional roles.

Purpose of the Study:

To investigate the specific roles and functions of laminin-11.
To understand the impact of laminin-11 deficiency on physiological processes.
To explore the therapeutic potential of targeting laminin-11 assembly.

Main Methods:

Analysis of laminin-11 expression patterns in various tissues.
Phenotypic analysis of mice lacking laminin-11.

Related Experiment Videos

In vitro studies assessing motoneuron and Schwann cell interactions with laminin-11.

Main Results:

Laminin-11 is present in kidney glomerular basement membranes and neuromuscular synaptic clefts.
Mice lacking laminin-11 display impaired glomerular filtration and neuromuscular synapse formation.
Motoneurons and Schwann cells demonstrate isoform-specific recognition of laminin-11 in vitro.

Conclusions:

Laminin-11 is a critical structural component of basement membranes, influencing cell behavior.
Defects in laminin-11 function lead to significant physiological and developmental abnormalities.
Understanding laminin-11 assembly may offer therapeutic strategies for conditions like congenital muscular dystrophy.