Related Experiment Video
Updated: Oct 15, 2026

A Protocol for Genetic Induction and Visualization of Benign and Invasive Tumors in Cephalic Complexes of Drosophila melanogaster
Published on: September 11, 2013
A recessive tumor gene function in Drosophila is involved in cell adhesion
1Institut für Biologie III, Universität Freiburg, Federal Republic of Germany.
Abstract:
The phenotypic effects of lethal (2) giant larvae mutations are due to unstructured growth of brain and imaginal disc cells in homozygous mutant larvae. Molecular properties of the wildtype l (2) gl protein and its tissue specificity of expression suggest that the protein is required for the adhesion of cells which are about the stop cell division and undergo terminal differentiation.
Insights
Lethal (2) giant larvae mutations cause uncontrolled cell growth in fruit flies. The lethal giant larvae protein is essential for cell adhesion and differentiation, preventing abnormal development.
Area of Science:
- Developmental Biology
- Genetics
- Cell Biology
Background:
- Lethal (2) giant larvae (l(2)gl) mutations in fruit flies lead to severe developmental defects.
- These mutations are characterized by the unstructured growth of brain and imaginal disc cells in larvae.
Purpose of the Study:
- To investigate the molecular function of the wildtype lethal (2) giant larvae protein.
- To understand the role of the l(2)gl protein in cell division and differentiation processes.
Main Methods:
- Analysis of the molecular properties of the wildtype l(2)gl protein.
- Examination of the tissue-specific expression patterns of the l(2)gl protein.
Main Results:
- The l(2)gl protein exhibits specific tissue expression patterns.
- Molecular characteristics suggest the l(2)gl protein is involved in cell adhesion.
- This adhesion is critical for cells ceasing division and undergoing terminal differentiation.
Conclusions:
- The lethal (2) giant larvae protein is crucial for regulating cell adhesion.
- Proper cell adhesion mediated by l(2)gl is essential for preventing uncontrolled cell proliferation and enabling terminal differentiation during development.
Related Concept Videos
Loss of Tumor Suppressor Gene Functions
When the tumor suppressor genes develop mutations or are lost, cells start growing out of control, leading to cancer. However, a single functional copy of the tumor suppressor gene is enough for the cells to maintain their normal functions and cell...
The Retinoblastoma Gene
The first-ever tumor suppressor gene called Rb was identified in retinoblastoma - a rare eye tumor in children. In inherited forms of the disease, a child inherits one defective copy of the Rb gene, which predisposes them to retinoblastoma. However,...
Small GTPases - Ras and Rho
Three regulatory proteins control their activity:
Intracellular Signaling Affects Focal Adhesions
Some...
Cadherins in Tissue Organization
Cell Sorting During Development
Cell sorting plays an...
Role Of Notch Signalling In Intestinal Stem Cell Renewal
Direct cell-to-cell contact is needed for the activation of Notch signaling. The signal is initiated when a notch ligand binds to a receptor on an adjacent cell, also...

