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Identification of Transcription Factor Regulators using Medium-Throughput Screening of Arrayed Libraries and a Dual-Luciferase-Based Reporter
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Identification of Transcription Factor Regulators using Medium-Throughput Screening of Arrayed Libraries and a Dual-Luciferase-Based Reporter

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The bone morphogenetic protein antagonist gremlin 1 is overexpressed in human cancers and interacts with YWHAH

Hong Namkoong1, Seung Min Shin, Hyun Kee Kim

  • 1Molecular Genetic Laboratory, College of Medicine, The Catholic University of Korea, Seoul 137-040, Korea. nkhong1@hanmail.net

BMC Cancer
|March 21, 2006
PubMed
Abstract

Insights

Gremlin 1 is overexpressed in many human cancers, including cervical cancer. This protein interacts with YWHAH, suggesting both are potential targets for cancer diagnostics and therapeutics.

Area of Science:

  • Oncology
  • Molecular Biology
  • Biochemistry

Background:

  • Oncogenesis involves oncogene abnormalities leading to neoplastic transformation.
  • Identifying novel cancer-associated genes is crucial for understanding carcinogenesis.

Purpose of the Study:

  • To identify a unique gene with cancer-associated expression.
  • To characterize the function of the identified gene in human carcinogenesis.

Main Methods:

  • Differential display (DD) RT-PCR to identify overexpressed genes in cervical cancer.
  • Northern blot and immunohistochemistry to determine gremlin 1 expression levels.
  • Yeast two-hybrid, GST pull-down, and immunoprecipitation assays to identify interacting proteins.

Main Results:

  • Gremlin 1 was found to be overexpressed in uterine cervical cancer and various other human tumors (lung, ovary, kidney, breast, colon, pancreas, sarcoma).
  • Gremlin 1 overexpression was associated with growth stimulation and increased telomerase activity in HEK 293 cells.
  • Gremlin 1 was identified to interact with 14-3-3 eta (YWHAH), with specific binding sites mapped.

Conclusions:

  • Gremlin 1 plays a potential oncogenic role in multiple human carcinomas.
  • The interaction between Gremlin 1 and YWHAH is a key functional mechanism.
  • Gremlin 1 and YWHAH represent promising targets for developing cancer diagnostic and therapeutic strategies.

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