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Diversity In The Hla-I Recognition Of Hla-F Monoclonal Antibodies: Hla-F Or Hla-Ib Monospecific, Hla-E Or Hla-G Bispecific Antibodies With Or Without Hla-Ia Reactivity, Mepur Ravindranath, Narendranath Ravindranath, Carly Amato-Menker, Fatiha El Hilali, Edward J Filippone
Diversity In The Hla-I Recognition Of Hla-F Monoclonal Antibodies: Hla-F Or Hla-Ib Monospecific, Hla-E Or Hla-G Bispecific Antibodies With Or Without Hla-Ia Reactivity, Mepur Ravindranath, Narendranath Ravindranath, Carly Amato-Menker, Fatiha El Hilali, Edward J Filippone
Division of Nephrology Faculty Papers
Previous investigators have used various anti-HLA-F monoclonal antibodies (mAbs) to demonstrate that the tissue distribution of HLA-F is highly restricted. Notably, these mAbs differed in their immunodiagnostic capabilities. Specifically, mAbs Fpep1.1 and FG1 detected HLA-F intracellularly in B cells but not on the cell surface, whereas mAb 3D11 detected HLA-F on the cell surface. The presence of HLA-F on T cells was recognized by mAb FG1 but not by mAb Fpep1.1. mAb 3D11 detected HLA-F on the cell surface of activated B cells and on peripheral blood lymphocytes, but not on the normal cells. Importantly, mAb 3D11 revealed that HLA-F …
Cell Surface B2m-Free Human Leukocyte Antigen (Hla) Monomers And Dimers: Are They Neo-Hla Class And Proto-Hla?, Mepur H. Ravindranath, Narendranath M. Ravindranath, Senthamil R. Selvan, Fatiha El Hilali, Carly J. Amato-Menker, Edward J. Filippone
Cell Surface B2m-Free Human Leukocyte Antigen (Hla) Monomers And Dimers: Are They Neo-Hla Class And Proto-Hla?, Mepur H. Ravindranath, Narendranath M. Ravindranath, Senthamil R. Selvan, Fatiha El Hilali, Carly J. Amato-Menker, Edward J. Filippone
Division of Nephrology Faculty Papers
Cell surface HLA-I molecules (Face-1) consist of a polypeptide heavy chain (HC) with two groove domains (G domain) and one constant domain (C-domain) as well as a light chain, B2-microglobulin (B2m). However, HCs can also independently emerge unfolded on the cell surface without peptides as B2m-free HC monomers (Face-2), B2m-free HC homodimers (Face 3), and B2m-free HC heterodimers (Face-4). The transport of these HLA variants from ER to the cell surface was confirmed by antiviral antibiotics that arrest the release of newly synthesized proteins from the ER. Face-2 occurs at low levels on the normal cell surface of the lung, …