The long term goals of this research are to understand the factors that underlie the survival or elimination of particular cells within tissues and how they may affect the success of transplantation and stem cell treatments such as applied to the cornea. The specific goal is to elucidate the contribution of a particular transcription factor recently found to have a novel effect on tissue growth. This protein delays the growth of cells with alterations in the protein synthetic machinery and enables their elimination from tissues. Genetic epistasis experiments using mutant fruit flies will be employed to define the contribution of a family of related bZIP transcription factors to the growth delay an competitive loss of cells, in part employing effects on eye size as an assay. The genome-wide contribution of selected bZIP transcription factors to gene transcription will be determined using high- throughput sequencing methods both in normal tissues and in tissues with alterations in protein synthetic machinery, with the goal of understanding the regulatory processes that control the rate of growth and the competition between cells that occurs in chimeras and perhaps in normal or cancerous tissues.

Public Health Relevance

Integrity and continuous rejuvenation of the cornea is necessary for vision. Degeneration or injury may require repair by transplantation of cornea or cornea stem cells. This project seeks to understand and optimize factors that affect the relative contribution of cell populations within tissues, in normal development and following transplantation.

Agency
National Institute of Health (NIH)
Institute
National Eye Institute (NEI)
Type
Exploratory/Developmental Grants (R21)
Project #
5R21EY026720-02
Application #
9360551
Study Section
Biology of the Visual System Study Section (BVS)
Program Officer
Mckie, George Ann
Project Start
2016-09-30
Project End
2018-08-31
Budget Start
2017-09-01
Budget End
2018-08-31
Support Year
2
Fiscal Year
2017
Total Cost
Indirect Cost
Name
Albert Einstein College of Medicine, Inc
Department
Type
DUNS #
079783367
City
Bronx
State
NY
Country
United States
Zip Code
10461
Baker, Nicholas E (2017) Mechanisms of cell competition emerging from Drosophila studies. Curr Opin Cell Biol 48:40-46