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Homeodomain Protein Transforming Growth Factor Beta-Induced Factor 2 Like, X-Linked Function in Colon Adenocarcinoma
Abolfazl Akbari1, Shahram Agah, Mansour Heidari
1Colorectal Research Center, Iran University of Medical Sciences, Tehran, Iran.
Abstract:
Background: TGIF2LX (transforming growth factor beta-induced factor 2 like, X-linked) is a homeodomain (HD) protein that has been implicated in the negative regulation of cell signaling pathways. The aim of this study was to investigate the possible functions of TGIF2LX in colon adenocarcinoma cells. Methods: The human SW48 cell line was transfected with cDNA for the wild-type TGIF2LX gene and gene/protein over-expression was confirmed by microscopic analysis, real time RT-PCR and Western blotting techniques. In vitro cell proliferation was evaluated by MTT and BrdU assays. After developing a colon tumor model in nude mice, immunohistochemical (IHC) staining of tumor tissue was carried out for Ki-67 (proliferation) and CD34 (angiogenesis) markers. To predict potential protein partners of TGIF2LX, in-silico analysis was also conducted. Results: Obtained results showed over-expression of TGIF2LX as a potential transcription factor could inhibit either proliferation or angiogenesis (P<0.05) in colon tumors. In-silico results predicted interaction of TGIF2LX with other proteins considered important for cellular development. Conclusions: Our findings provided evidence of molecular mechanisms by which TGIF2LX could act as a tumor suppressor in colon adenocarcinoma cells. Thus, this gene may potentially be a promising option for colon cancer gene-based therapeutic strategies.
Insights
Transforming growth factor beta-induced factor 2 like, X-linked (TGIF2LX) acts as a tumor suppressor by inhibiting colon adenocarcinoma cell proliferation and angiogenesis. This finding suggests TGIF2LX as a potential target for colon cancer gene therapy.
Area of Science:
- Molecular Biology
- Oncology
- Genetics
Background:
- TGIF2LX (transforming growth factor beta-induced factor 2 like, X-linked) is a homeodomain protein involved in negative regulation of cell signaling.
- Colon adenocarcinoma is a significant health concern, necessitating research into novel therapeutic targets.
Purpose of the Study:
- To investigate the functional role of TGIF2LX in colon adenocarcinoma cells.
- To explore TGIF2LX as a potential therapeutic target for colon cancer.
Main Methods:
- Overexpression of wild-type TGIF2LX in SW48 colon adenocarcinoma cells.
- Assessment of cell proliferation using MTT and BrdU assays.
- In vivo tumor xenograft model in nude mice with immunohistochemical analysis for Ki-67 and CD34.
- In silico analysis to predict TGIF2LX protein interactions.
Main Results:
- TGIF2LX overexpression significantly inhibited colon tumor cell proliferation and angiogenesis (P<0.05).
- In silico analysis predicted interactions between TGIF2LX and proteins crucial for cellular development.
- TGIF2LX demonstrated potential as a transcription factor influencing tumor growth.
Conclusions:
- TGIF2LX functions as a tumor suppressor in colon adenocarcinoma.
- The findings elucidate molecular mechanisms of TGIF2LX's action in colon cancer.
- TGIF2LX represents a promising candidate for future colon cancer gene-based therapeutic strategies.
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