Similar expression and regulation of Gli2 and Gli3 in the chick limb bud

نویسندگان

  • Ronen Schweitzer
  • Kyle J Vogan
  • Clifford J Tabin
چکیده

Gli genes encode a family of zinc finger transcription factors that mediate signaling by Hedgehog proteins. We have cloned the chick Gli3 gene and studied its expression in developing chick limbs. Gli3 expression is highly similar to that of chick Gli2. Gli3 mRNA is evenly distributed in the early limb mesenchyme and subsequently downregulated in the posterior mesenchyme by the polarizing activity of Sonic hedgehog. At later stages, Gli3 is expressed in the distal limb mesenchyme.

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

منابع مشابه

Suppressor of Fused Is Required for Determining Digit Number and Identity via Gli3/Fgfs/Gremlin

The anterior-posterior patterning of the vertebrate limb bud requires closely coordinated signaling interactions, including Sonic Hedgehog (Shh)-mediated counteraction of the Gli3 transcription factor in the distal and posterior mesenchyme of the limb bud. Suppressor of Fused (Sufu), an intracellular negative regulator of Shh signaling via Gli2 and Gli3, is implicated in early development of th...

متن کامل

A SHH-independent regulation of Gli3 is a significant determinant of anteroposterior patterning of the limb bud.

The family of GLI proteins (GLI1-3) comprises the intracellular mediators of the hedgehog pathway, which regulates a myriad of developmental processes, one of which is limb development. Whereas GLI1 and GLI2 seem to be dispensable during limb development, GLI3 is especially crucial since all GLI3-associated human congenital diseases comprise limb malformations. Furthermore, Gli3(-/-) mouse embr...

متن کامل

13-P121 Investigating the dynamics of Notch signalling in the embryonic chick inner ear using a reporter-based approach

The vertebrate body is supported by a bony skeleton, which is largely formed by endochondral ossification. To ensure normal bone growth, differentiation of chondrocytes has to be tightly regulated. One of the major regulators of this process is the growth factor Indian hedgehog (Ihh). Endochondral ossification is impaired in Ihh mutant mice due to disturbed chondrocyte proliferation and differe...

متن کامل

Gli3-mediated repression of Hedgehog targets is required for normal mammary development.

The Hedgehog pathway is vital for the development of many epidermal appendages, but its role in mammary development has been unclear. Here, we show that although Gli2 and Gli3 are expressed during embryonic mammary development, transcriptional reporters of positive Hedgehog signaling are absent. Nevertheless, Gli3(xt/xt) embryos show aberrant early mammary marker expression and lack two pairs o...

متن کامل

Pax9 and Jagged1 act downstream of Gli3 in vertebrate limb development

From early in limb development the transcription factor Gli3 acts to define boundaries of gene expression along the anterior-posterior (AP) axis, establishing asymmetric patterns required to provide positional information. As limb development proceeds, posterior mesenchyme expression of Sonic hedgehog (Shh) regulates Gli3 transcription and post-translational processing to specify digit number a...

متن کامل

ذخیره در منابع من


  با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

عنوان ژورنال:
  • Mechanisms of Development

دوره 98  شماره 

صفحات  -

تاریخ انتشار 2000