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Immunoglobulin-like Cell Adhesion Molecules

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...

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Functional evaluation of various ICAM3 transcript variants in diffuse large B-Cell lymphoma.

Limei Li¹, Chenglong Yang², Aruna¹

¹Department of Hematology, Inner Mongolia People's Hospital, Hohhot, China.

Leukemia & Lymphoma

|July 18, 2022

Summary

This study reveals distinct roles for Intercellular Adhesion Molecule 3 (ICAM3) transcript variants in Diffuse Large B-cell Lymphoma (DLBCL). Variants 1, 3, and 4 promote proliferation, migration, and EMT, while variant 2 has no effect.

Keywords:

DLBCL ICAM3 apoptosis migration proliferation transcript variants

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Published on: October 10, 2022

Area of Science:

Molecular Biology
Oncology
Immunology

Background:

Previous research focused on the longest ICAM3 transcript, leaving other variants' functions in tumor progression largely unexplored.
Understanding the diverse roles of ICAM3 transcript variants is crucial for comprehending Diffuse Large B-cell Lymphoma (DLBCL) pathogenesis.

Purpose of the Study:

To investigate the expression and functional roles of ICAM3 transcript variants 1-4 in DLBCL.
To elucidate how these variants influence DLBCL cell proliferation, apoptosis, migration, and epithelial-mesenchymal transition (EMT).

Main Methods:

Detection of ICAM3 transcript variants 1-4 expression in DLBCL cell lines and tumor tissues.
Ectopic expression of ICAM3 variants in SU-DHL2 cells to assess proliferation, cell cycle, and apoptosis.
Evaluation of the impact of ICAM3 variants on cell migration and EMT.

Main Results:

ICAM3 variants 1, 3, and 4 were expressed in normal B cells and most DLBCL samples, while variant 2 was undetectable.
Ectopic expression of variants 1-4 enhanced SU-DHL2 cell proliferation by accelerating the cell cycle but did not affect apoptosis.
Variants 1, 3, and 4 promoted cell migration and EMT, whereas variant 2 showed no significant effects.

Conclusions:

ICAM3 transcript variants exhibit differential functions in DLBCL progression.
Variants 1, 3, and 4 play significant roles in promoting DLBCL cell proliferation, migration, and EMT.
Variant 2 does not appear to contribute to these aspects of DLBCL progression.