@article{2576, keywords = {Amino Acid Sequence, Bacterial Proteins, HLA-DR Antigens, Humans, Interferon-gamma, Interleukin-5, leprosy, Molecular Sequence Data, Mycobacterium leprae, T-Lymphocytes}, author = {Ohyama H and Matsushita S and Nishimura F and Kato N and Hatano K and Takashiba S and Murayama Y}, title = {T cell responses to major membrane protein II (MMP II) of Mycobacterium leprae are restricted by HLA-DR molecules in patients with leprosy.}, abstract = {
Major membrane protein II (MMP II) of Mycobacterium leprae (M. leprae) is a 22kDa protein inducing humoral immune response in leprosy patients. MMP II-specific bulk T cell lines were established from leprosy patients to determine major T cell epitopes in MMP II and to evaluate lymphokine production induced by MMP II. These bulk T cell lines reacted to one or more peptides in the locus of amino acid residues from 23 to 109 of MMP II. The proliferative responses of all T cell lines were mainly inhibited by the addition of anti-DRB1 mAb. Many bulk T cell lines induced IFN-gamma, IL-5, but not IL-4. However, it was not possible to distinguish the LL or TT types of leprosy based on the pattern of T cell epitopes and the lymphokine productivity in the responses against MMP II. Thus, it appears that T cell response to MMP II is restricted by the HLA-DRB1 molecule, but not by DQ and DP molecules, which results in the induction of IFN-gamma production.
}, year = {2001}, journal = {Vaccine}, volume = {20}, pages = {475-82}, month = {2001 Nov 12}, issn = {0264-410X}, doi = {10.1016/s0264-410x(01)00354-1}, language = {eng}, }