United Biomedical, Inc.

Jiun Bo Chen

Chang Yi Wang

Feng Lin

Shuang Ding

The present disclosure is directed to peptide immunogen constructs targeting the extracellular membrane-proximal domain of membrane-bound IgE (or IgE EMPD) and formulations thereof for the treatment of IgE-mediated allergic diseases. The IgE EMPD peptide immunogen constructs have a B cell epitope peptide of more than 20 amino acids, preferably cyclic, linked through an optional spacer to heterologous T helper cell (Th) epitopes derived from pathogen proteins. These peptide immunogen constructs and formulations thereof can stimulate the generation of highly specific antibodies in vaccinated hosts that are directed against the IgE EMPD peptide and are crossreactive with membrane-bound IgE on B lymphocytes committed to IgE secretion. The antibodies induced by the peptide immunogen constructs and formulations thereof in vaccinated hosts can induce apoptosis of IgE-expressing B cells and mediate Antibody Dependent Cellular Cytototoxity (ADCC), resulting in reduction of antigen-specific IgE and total IgE levels in vaccinated hosts to effectively treat IgE-mediated allergic pathology.

Peptide immunogens and formulations thereof targeting membrane-bound IgE for treatment of IgE mediated allergic diseases

The present disclosure is directed to individual peptide immunogen constructs targeting portions of the Interleukin-6 (IL-6) protein, compositions containing the constructs, antibodies elicited by the constructs, and methods for making and using the constructs and compositions thereof. The disclosed IL-6 peptide immunogen constructs contain a B cell epitope from IL-6 linked to a heterologous T helper cell (Th) epitope directly or through an optional heterologous spacer. The IL-6 peptide immunogen constructs stimulate the generation of highly specific antibodies directed to the IL-6 receptor (IL-6R) binding site for the prevention and/or treatment of diseases impacted by IL-6 dysregulation.

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Taipei, Taiwan

Jiun Bo Chen