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A tissue membrane is a thin layer of cells that covers the outside of the body, the organs, internal passageways that lead to the exterior of the body, and the lining of the moveable joint cavities. There are two basic types of tissue membranes— connective tissue and epithelial membranes.
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Basement membranes at a glance.

Rachel Lennon1, David R Sherwood2

  • 1Manchester Cell-Matrix Centre, Faculty of Biology Medicine and Health, The University of Manchester, Manchester M13 9PT, UK.

Journal of Cell Science
|September 3, 2025
PubMed
Summary
This summary is machine-generated.

Basement membranes (BMs) are ancient extracellular matrices crucial for tissue structure and function. Understanding their composition and changes in aging and disease offers new therapeutic avenues.

Keywords:
AgeingBasement membranesDiseaseMembrane composition

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Area of Science:

  • Biochemistry
  • Cell Biology
  • Extracellular Matrix Research

Background:

  • Basement membranes (BMs) are essential, ancient animal extracellular matrices underlying and surrounding most tissues.
  • They provide structural scaffolds and tensile strength through core components like laminin and collagen IV.
  • BMs contain over 150 secreted proteins and 50 cell receptors, enabling diverse tissue-specific functions.

Purpose of the Study:

  • To review the current understanding of basement membrane (BM) composition, formation, and function.
  • To explore how BMs are tailored for specific tissue roles, including filtration, organ shaping, and cell signaling.
  • To outline the changes BMs undergo with aging and disease.

Main Methods:

  • Literature review of existing research on basement membrane biology.
  • Analysis of the molecular composition and structural organization of BMs.
  • Examination of the functional roles and disease associations of BM proteins.

Main Results:

  • BMs are complex structures built from self-associating networks of laminin and collagen IV, supplemented by numerous other proteins.
  • BMs perform critical functions such as filtration, tissue organization, and guiding cell behavior.
  • Defects in BM proteins are linked to over 100 human disease phenotypes.

Conclusions:

  • Basement membranes are vital for tissue health and homeostasis.
  • Dysregulation of BM composition and function contributes to numerous diseases.
  • Further research into BM biology is crucial for developing novel therapeutic strategies for human disorders.