A simple method for screening human T and B lymphocyte alloantibodies

Area of Science:

• Immunology
• Cell Biology

Background:

• Human lymphocytes comprise distinct B cell and T cell populations.
• Accurate identification and separation of lymphocyte subsets are crucial for immunological studies.

Purpose of the Study:

• To develop and validate a method for separating human lymphocytes into B cell and T cell subpopulations.
• To screen patient sera for the presence of alloantibodies against T cells and B cells.

Main Methods:

• Utilized an sRBC-hemolysin monolayer for lymphocyte separation into adherent (B cells) and non-adherent (T cells) fractions.
• Employed complement-mediated cytolysis to test separated cells against predispensed sera.
• Screened a total of 372 human sera.

Main Results:

• Successfully separated human lymphocytes into predominantly B cell and T cell populations.
• Detected antibodies specific for B cell antigens in 19 out of 372 sera.
• Identified antibodies against T-specific antigens in 9 out of 372 sera.

Conclusions:

• The sRBC-hemolysin monolayer method is effective for separating human lymphocytes.
• Alloantibodies against B cell and T cell antigens are present in a subset of the screened population.
• This technique facilitates the study of alloantibody specificities in relation to lymphocyte subsets.