[Construction and validation of eukaryotic expression vectors for human ABO subgroup genes]

Area of Science:

• Molecular Biology
• Immunogenetics

Background:

• The ABO blood group system is crucial for transfusion compatibility and has complex genetic variations.
• Understanding ABO subgroup gene expression is vital for accurate blood typing and transfusion practices.

Purpose of the Study:

• To construct and validate eukaryotic expression vectors for specific human ABO subgroup genes.
• To confirm the successful expression of these ABO subgroup proteins in vitro.

Main Methods:

• Isolation of total RNA and synthesis of complementary DNA (cDNA) from A101 and B101 subgroups.
• Polymerase Chain Reaction (PCR) amplification and site-directed mutagenesis for other subgroup genes.
• Directional ligation of ABO gene fragments into pcDNA3.1 eukaryotic expression vectors, followed by sequencing, transfection into Hela cells, Western blotting, and immunofluorescence assays.

Main Results:

• Successful construction of six distinct eukaryotic expression vectors: pDNA3.1-A101, pDNA3.1-CisAB01, pDNA3.1-Ael05, pDNA3.1-B101, pDNA3.1-B(A)04, and pDNA3.1-Bw03.
• Western blotting and immunofluorescence assays confirmed the successful expression of target ABO subgroup proteins in transfected Hela cells.

Conclusions:

• Eukaryotic expression vectors for human ABO subgroup genes were successfully constructed and demonstrated functionality in vitro.
• These validated vectors provide a valuable tool for advancing research into the molecular mechanisms and clinical implications of ABO blood group variations.