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Related Experiment Video

Updated: Jun 2, 2026

Investigation of the Transcriptional Role of a RUNX1 Intronic Silencer by CRISPR/Cas9 Ribonucleoprotein in Acute Myeloid Leukemia Cells

Investigation of the Transcriptional Role of a RUNX1 Intronic Silencer by CRISPR/Cas9 Ribonucleoprotein in Acute Myeloid Leukemia Cells

Published on: September 1, 2019

TIEG1/KLF10 modulates Runx2 expression and activity in osteoblasts.

John R Hawse¹, Muzaffer Cicek, Sarah B Grygo

¹Department of Biochemistry and Molecular Biology, Mayo Clinic, Rochester, Minnesota, United States of America. hawse.john@mayo.edu

|May 12, 2011

Summary

TIEG1 (Thymus expression 1) is crucial for bone health, particularly in females. Its absence impairs Runx2 expression, leading to osteopenia. Restoring Runx2 corrects bone defects in TIEG1 knockout mice.

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Skeletal Phenotype Analysis of a Conditional Stat3 Deletion Mouse Model

Skeletal Phenotype Analysis of a Conditional Stat3 Deletion Mouse Model

Published on: July 3, 2020

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Last Updated: Jun 2, 2026

Investigation of the Transcriptional Role of a RUNX1 Intronic Silencer by CRISPR/Cas9 Ribonucleoprotein in Acute Myeloid Leukemia Cells

Investigation of the Transcriptional Role of a RUNX1 Intronic Silencer by CRISPR/Cas9 Ribonucleoprotein in Acute Myeloid Leukemia Cells

Published on: September 1, 2019

Skeletal Phenotype Analysis of a Conditional Stat3 Deletion Mouse Model

Skeletal Phenotype Analysis of a Conditional Stat3 Deletion Mouse Model

Published on: July 3, 2020

Area of Science:

Bone Biology
Molecular Endocrinology
Genetics

Background:

TIEG1/KLF10 is implicated in skeletal development.
Osteoporosis is a significant health concern, especially in postmenopausal women.
Runx2 is a master regulator of osteoblast differentiation and bone formation.

Purpose of the Study:

To investigate the role of TIEG1 in regulating Runx2 expression and its contribution to osteopenia.
To elucidate the molecular mechanisms by which TIEG1 influences osteoblast function.
To determine if TIEG1-mediated regulation of Runx2 is essential for maintaining bone mass.

Main Methods:

Generation and analysis of TIEG1 knockout mice.
Isolation and culture of calvarial osteoblasts.
Gene expression analysis (RT-qPCR).
Transient transfection and chromatin immunoprecipitation (ChIP) assays.
Co-immunoprecipitation and co-localization studies.
Adenoviral rescue experiments.

Main Results:

TIEG1 deletion causes gender-specific osteopenia in mice, affecting cortical and trabecular bone.
TIEG1 knockout osteoblasts show reduced Runx2 expression and impaired mineralization.
TIEG1 directly binds to and activates the Runx2 promoter.
TIEG1 interacts with Runx2, co-activating its transcriptional activity.
Restoration of Runx2 in TIEG1 knockout osteoblasts rescues differentiation and mineralization defects.

Conclusions:

TIEG1 is a critical regulator of Runx2 expression and activity in osteoblasts.
Downregulation of Runx2 due to TIEG1 deficiency contributes to osteopenic bone phenotype.
TIEG1 represents a potential therapeutic target for osteoporosis.