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Collagen-derived peptides modulate CD4+ T-cell differentiation and suppress allergic responses in mice.


ABSTRACT: Collagen peptides have been widely used as a food supplement. After ingestion of collagen peptides, oligopeptides containing hydroxyproline (Hyp), which are known to have some physiological activities, are detected in peripheral blood. However, the effects of collagen-peptide administration on immune response are unclear. In the present study, we tested the effects of collagen-peptide ingestion on allergic response and the effects of collagen-derived oligopeptides on CD4+ T-cell differentiation.BALB/c mice fed a collagen-peptide diet were immunized with ovalbumin (OVA), and their serum IgE and IgG levels, active cutaneous anaphylaxis, and cytokine secretion by splenocytes were examined. Naive CD4+ T cells were stimulated with anti-CD3 and anti-CD28 in the presence of collagen-derived oligopeptides, and the expression of IFN-?, IL-4, and Foxp3 was analyzed.In an active anaphylaxis model, oral administration of collagen peptides suppressed serum OVA-specific immunoglobulin E (IgE) production and diminished anaphylaxis responses. In this model, the ingestion of collagen peptides skewed the pattern of cytokine production by splenocytes toward T-helper (Th) type 1 and regulatory T (Treg) cells. In vitro T-helper cell differentiation assays showed that Hyp-containing oligopeptides promoted Th1 differentiation by upregulating IFN-?-induced signal transducer and activator of transcription 1 (STAT1) signaling. These oligopeptides also promoted the development of Foxp3+ Treg cells in response to antigen stimulation in the presence of TGF-?.Collagen-peptide ingestion suppresses allergic responses by skewing the balance of CD4+ T cells toward Th1 and Treg cells and seems to be a promising agent for preventing allergies and inflammatory diseases.

SUBMITTER: Nishikimi A 

PROVIDER: S-EPMC5946155 | biostudies-other | 2018 Jun

REPOSITORIES: biostudies-other

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Collagen-derived peptides modulate CD4<sup>+</sup> T-cell differentiation and suppress allergic responses in mice.

Nishikimi Akihiko A   Koyama Yoh-Ichi YI   Ishihara Sayaka S   Kobayashi Shusaku S   Tometsuka Chisa C   Kusubata Masashi M   Kuwaba Kumiko K   Hayashida Osamu O   Hattori Shunji S   Katagiri Koko K  

Immunity, inflammation and disease 20180201 2


<h4>Introduction</h4>Collagen peptides have been widely used as a food supplement. After ingestion of collagen peptides, oligopeptides containing hydroxyproline (Hyp), which are known to have some physiological activities, are detected in peripheral blood. However, the effects of collagen-peptide administration on immune response are unclear. In the present study, we tested the effects of collagen-peptide ingestion on allergic response and the effects of collagen-derived oligopeptides on CD4<sup  ...[more]

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2023-10-15 | GSE227371 | GEO