Eye suppression, a novel function of teashirt, requires Wingless signaling.
teashirt (tsh) encodes a Drosophila zinc-finger protein. Misexpression of tsh has been shown to induce ectopic eye formation in the antenna. We report that tsh can suppress eye development. This novel function of tsh is due to the induction of homothorax (hth), a known repressor of eye development, and requires Wingless (WG) signaling. Interestingly, tsh has different functions in the dorsal and ventral eye, suppressing eye development close to the ventral margin, while promoting eye development near the dorsal margin. It affects both growth of eye disc and retinal cell differentiation.
Institute of Molecular Biology, Academia Sinica, Nankang, Taipei, 11529 Taiwan, Republic of China.
Amit
A
Singh
Madhuri
M
Kango-Singh
Y Henry
YH
Sun
D000818:Animals; D019521:Body Patterning / Q000235:genetics*; D002454:Cell Differentiation; D002455:Cell Division; D004330:Drosophila / Q000196:embryology* / Q000235:genetics*; D029721:Drosophila Proteins / Q000235:genetics / Q000502:physiology*; D005123:Eye / Q000196:embryology*; D005124:Eye Abnormalities / Q000235:genetics*; D018507:Gene Expression Regulation, Developmental; D011518:Proto-Oncogene Proteins / Q000235:genetics / Q000502:physiology*; D012097:Repressor Proteins / Q000235:genetics; D015398:Signal Transduction / Q000235:genetics*; D014157:Transcription Factors / Q000235:genetics*; D051155:Wnt1 Protein; D016335:Zinc Fingers
D029721:Drosophila Proteins; D011518:Proto-Oncogene Proteins; D012097:Repressor Proteins; D014157:Transcription Factors; D051155:Wnt1 Protein; C074622:wg protein, Drosophila; C066830:tsh protein, Drosophila