Can membrane nanotubes facilitate communication between immune cells?

B Onfelt1, D M Davis

  • 1Department of Biological Sciences, Sir Alexander Fleming Building, Imperial College, London SW7 SAZ, UK.

Insights

Membrane nanotubes connect cells, enabling the transfer of organelles and proteins. Their role in immune cell communication is significant but challenging to study with current technologies.

Area of Science:

  • Cell biology
  • Immunology
  • Biophysics

Background:

  • Intercellular connections via membrane nanotubes have been recently observed.
  • These structures may facilitate the transport of organelles and membrane proteins between cells.
  • The sharing of cellular components between cells is potentially a common biological process.

Purpose of the Study:

  • To explore the potential physiological role of membrane nanotubes in immune cell communication.
  • To highlight the limitations of current technologies in studying these interactions.

Main Methods:

  • Observational studies of membrane nanotube formation.
  • Analysis of potential cargo transport (organelles, proteins).
  • Discussion of technological challenges in studying immune cell nanotubes.

Main Results:

  • Membrane nanotubes are confirmed intercellular structures.
  • These nanotubes are capable of transporting cellular components.
  • Current technology hinders the investigation of their function in immune cells.

Conclusions:

  • Membrane nanotubes play a role in intercellular communication.
  • Further technological advancements are needed to fully understand the physiological significance of membrane nanotubes, particularly between immune cells.

Related Concept Videos

Contact-dependent Signaling01:19

Contact-dependent Signaling

Contact-dependent signaling, as the name suggests, requires that communicating cells be in direct contact with each other. This is achieved either through receptor-ligand interactions or by specialized cytoplasmic channels that allow the flow of small molecules between cells. In animal cells, channels called gap junctions facilitate contact-dependent signaling in certain tissues, whereas, plasmodesmata perform a similar function in plants.
Gap Junctions
In animal cells, gap junctions are formed...
What are Membranes?01:24

What are Membranes?

A cell's plasma membrane demarcates the cell's borders and determines the nature of its interaction with the environment. Cells exclude certain substances, take in others, and excrete some others in controlled quantities. The plasma membrane must be flexible to allow certain cells, such as red and white blood cells, to change their shape while passing through narrow capillaries. These are the more obvious plasma membrane functions. In addition, the plasma membrane's surface carries markers that...
Immunoglobulin-like Cell Adhesion Molecules01:31

Immunoglobulin-like Cell Adhesion Molecules

Immunoglobulin-like cell adhesion molecules or Ig-CAMs are a versatile group of cell surface glycoproteins belonging to the immunoglobulin protein superfamily. Ig-CAMs possess the characteristic immunoglobulin protein domains and other domains such as the fibronectin type III domain. The Ig domains are glycosylated to varying degrees in different Ig-CAMs.
Ig-CAMs exhibit either homophilic binding (to other Ig-CAMs) or heterophilic binding (to other ligands such as integrins). While most Ig-CAMs...
Immune Surveillance by NK Cells and Phagocytes01:25

Immune Surveillance by NK Cells and Phagocytes

Immune surveillance is an integral part of the innate immune system, involving the continuous monitoring of peripheral tissues to detect and respond to pathogens, infected cells, or cancerous cells. This surveillance is conducted primarily by natural killer (NK) cells and phagocytes, which employ distinct but complementary mechanisms to identify and eliminate threats.
Natural Killer Cells: The Fast Responders
NK cells are large granular lymphocytes found in the blood and lymphatic system. These...
Cytotoxic T Cells-mediated Immune Response01:27

Cytotoxic T Cells-mediated Immune Response

Cytotoxic T cells are a vital component of the immune system. They have the remarkable ability to identify and target antigens on infected or abnormal cells. These antigens often originate from intracellular pathogens such as viruses or abnormal proteins cancer cells produce.
Immunological surveillance is the ability of immune cells to monitor and eliminate infected cells with intracellular pathogens, neoplastically transformed cells, and cells with non-self antigens. Cytotoxic T cells and NK...