Congratulations Nicole!
Nir Yakoby March 12, 2015

Congratulations Nicole for passing the Qualifying Exam, job well done! Read More

CCIB's Best Student's Paper Award
Nir Yakoby February 22, 2015

Congratulations Rob Marmion for being selected 1st place for the CCIB's Best Student's Paper Award. The paper… Read More

Congratulations Nayab and David
Nir Yakoby December 15, 2014

Congratulations Nayab and David for receiving the Arts and Sciences Dean's Research Fund Grant. Good luck with… Read More

Tissue Patterning and Morphogenesis

egg patterningThe main interest of our laboratory is to understand mechanisms underlying cell fate determination by cell signaling. We focus on the two highly conserved signaling pathways, the bone morphogenetic protein (BMP) and epidermal growth factor receptor (EGFR), and use fruit fly egg formation, oogenesis, as a model system.

The egg chamber (left) is the precursor of the mature egg (right). The oocyte is surrounded by a layer of follicle cells (FCs), which derive the formation of the 3D intricate structures of the Drosophila eggshell.

Eggshell structures, such as the dorsal appendages (DAs), are formed by two non-overlapping populations of cells. Cells expressing Rhomboid (Rho) form the future floor of the DAs, and cells expressing Broad (BR) form the future roof of the DAs. Other structures include the operculum (Op – an opening for larvae hatching), and a micropyle (M – the point of sperm entry).

We are interested to study the evolution of BMP signaling dynamics across Drosophila species. In addition, we aim to understand how spatiotemporal changes in the activation of EGFR by the ligand Gurken derive the formation of morphological novelties on eggshells of numerous Drosophila species.


National Institute of Health  National Science Foundation