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Published on: December 21, 2019
[Screening the hALR-interacting protein from the cDNA library of hepatocarcinoma cells and studying its biological
Jian-chuan Deng1, Lin Zhang, Hang Sun
1Institute for Viral Hepatitis, Chongqing University of Medical Sciences, Chongqing 400010, China.
Objectives:
To screen the hALR-interacting protein by phage-displayed technique and identify its biological activities.
Methods:
The specific phage clones that interacted with target protein hALR from a cDNA library of hepatocarcinoma cells were selected using the T7 phage-displayed technique. The acquired cDNA inserts were sequenced and analyzed by bioinformatic tools. The biological activities of the phage-displayed peptide affecting QGY hepatocarcinoma cells were studied using 3H-TdR method.
Results:
The cDNA inserts with 212 bp were acquired after 4 rounds of biopanning. They showed 100% homology with citron kinase. The phage-displayed peptide and the peptide combined with hALR affected QGY cells proliferation.
Conclusions:
hALR-interacting peptide can be specifically screened by phage-displayed technique. Citron kinase that interacted with hALR potentially plays an important role in the proliferation of hepatocarcinoma cells.
Insights
Researchers screened a human liver regeneration (hALR) interacting protein using phage display. Citron kinase was identified and found to influence hepatocarcinoma cell proliferation.
Area of Science:
- Molecular biology
- Biochemistry
Context:
- Hepatocellular carcinoma (HCC) is a significant global health concern.
- Identifying novel protein interactions is crucial for understanding HCC pathogenesis.
- Phage display technology offers a powerful tool for screening protein interactors.
Purpose:
- To screen for proteins interacting with human liver regeneration (hALR) using phage display.
- To identify the biological activities of the screened hALR-interacting protein.
Summary:
- Phage display and biopanning identified specific phage clones interacting with hALR from a hepatocarcinoma cDNA library.
- Sequencing and bioinformatic analysis revealed the interacting protein to be citron kinase.
- The phage-displayed peptide and its combination with hALR demonstrated effects on QGY hepatocarcinoma cell proliferation.
Impact:
- This study successfully screened an hALR-interacting peptide using phage display.
- Citron kinase is identified as a potential key player in hepatocarcinoma cell proliferation.
- Findings provide a basis for further investigation into citron kinase as a therapeutic target in HCC.
