The present invention relates to polypeptide HP, or a polynucleotide sequence encoding polypeptide HP, or a host cell comprising said polynucleotide sequence, or a host cell comprising an expression vector comprising said polynucleotide sequence, for use in the treatment and/or prevention of a disorder in a subject; wherein said disorder is an inflammatory disorder and/or an autoimmune disorder; wherein said polypeptide has at least 75% identity to SEQ ID NO 2, SEQ ID NO 4 or SEQ ID NO 6 or variants, homologues, fragments or derivatives thereof; and wherein said polynucleotide sequence encodes a polypeptide which has at least 75% identity to SEQ ID NO 2, SEQ ID NO 4 or SEQ ID NO 6 or variants, homologues, fragments or derivatives thereof and/or wherein said polynucleotide sequence has at least 75% identity to SEQ ID NO 1, SEQ ID NO 3 or SEQ ID NO 5 or variants, homologues, fragments or derivatives thereof.

Protection of fish from bacterial disease by vaccination with a live attenuated strain of the causative bacterium is enhanced when the attenuated strain has been grown in an iron-limited medium.

Provided herein are compositions and methods for the induction and/or proliferation of CD8+ T-cells. The disclosure also provides methods of treatment of diseases that can be treated by the induction and/or proliferation of CD8+ T-cells.

Provided herein are compositions and methods for the induction and/or proliferation of CD8+ T-cells. The disclosure also provides methods of treatment of diseases that can be treated by the induction and/or proliferation of CD8+ T-cells.

The invention provides compositions comprising bacterial strains for treating and preventing inflammatory and autoimmune diseases.

Provided herein are compositions (e.g., probiotic, pharmaceutical, etc.) comprising one or more strains of non-Clostridia class bacteria and methods of use thereof for allergen desensitization. In particular, bacteria of bacterial classes such as Negativicutes, Actinobacteria, and Bacteroidia support allergen desensitization, for example, by promoting production of metabolites that aid in desensitization or performing catabolism of food allergens.

Provided herein are methods and compositions related to treating or preventing seizures. In some aspects, provided herein are methods of treating or preventing seizures in a subject by administering to the subject a composition comprising Parabacteroides and Akkermansia bacteria.

Provided herein are compositions and methods for the induction and/or proliferation of CD8+ T-cells. The disclosure also provides methods of treatment of diseases that can be treated by the induction and/or proliferation of CD8+ T-cells.

Provided herein are compositions and methods for the induction and/or proliferation of CD8+ T-cells. The disclosure also provides methods of treatment of diseases that can be treated by the induction and/or proliferation of CD8+ T-cells.

An immunogenic composition, a periodontal vaccine formulation containing the immunogenic composition, and methods for treating or preventing periodontal disease are provided, where the methods involves administering an immunologically effective amount of the composition or vaccine formulation to a subject. The immunogenic composition contains at least one polypeptide that comprises: an Mfa1 antigen sequence that is substantially homologous to an immunogenic amino acid sequence from an Mfa1 fimbrilin protein of a Porphyromonas bacterium; and an HA1 antigen sequence, an HA2 antigen sequence, or both an HA1 antigen sequence and an HA2 antigen sequence, wherein the HA1 antigen sequence is substantially homologous to an immunogenic amino acid sequence from an RgpA Gingipain hemagglutinin domain 1 contained within an RgpA Gingipain protein of a Porphyromonas bacterium, and the HA2 antigen sequence is substantially homologous to an immunogenic amino acid sequence from an RgpA Gingipain hemagglutinin domain 2 contained within an RgpA Gingipain protein of a Porphyromonas bacterium.