Rukiin prolamiinit ovat omega ja gamma secaliineja vuoden 1998 tietämyksen mukaan.
Katson mitä niistä nykyään löytyy.
RUKIIN SEKALIINIT ja muut prolamiinit
Int
J Exp Pathol. 2016 Aug;97(4):303-309. doi: 10.1111/iep.12199.
Epub 2016 Sep 23.
LÄHDE: Coeliac disease: immunogenicity studies of barley hordein and rye secalin-derived peptides.
Wahab WA1, Šuligoj T2, Ellis J2, Côrtez-Real B2, Ciclitira PJ3.Tiivistelmä. Keliakia on tulehduksellinen häiriö ohutsuolessa, Siihen sisältyy poikkeava adaptiivnen immuniteetti, jossa HLA-DQ2 tai DQ8 molekyylit esittävät gluteeniherkille T-soluille CD toxista gluteenipeptidiä
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Abstract Coeliac disease (CD) is an inflammatory disorder of the small intestine. It includes aberrant adaptive immunity with presentation of CD toxic gluten peptides by HLA-DQ2 or DQ8 molecules to gluten-sensitive T cells.
On oletettu, että eräs
omega-gliadiini/ C-hordeiinipeptidi (QPFPQPQQPIPQ) ja rukiista
peräisin oleva secaliinipeptidi (QPFPQPQQPIPQ) ovat toksiset
T-soluille keliakiataudissa koska seuraa positiivisia tuloksia, ,
kun keliakiapotilaiden perifeerisiä T-solujen määritetään.
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A ω-gliadin/C-hordein peptide (QPFPQPEQPFPW) and
a rye-derived secalin peptide (QPFPQPQQPIPQ) were proposed
to be toxic in CD, as they yielded positive responses when assessed
with peripheral blood T-cell clones derived from individuals with
CD.
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We sought to assess the immunogenicity of the candidate
peptides using gluten-sensitive T-cell lines obtained from CD small
intestinal biopsies. We also sought to investigate the potential
cross-reactivity of wheat gluten-sensitive T-cell lines with
peptic-tryptic digested barley hordein (PTH) and rye secalin (PTS).
Synthesised candidate peptides were deamidated with tissue
transglutaminase (tTG).
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Gluten-sensitive T-cell lines were generated by
culturing small intestinal biopsies from CD patients with
peptic-tryptic gluten (PTG), PTH or PTS, along with autologous PBMCs
for antigen presentation. The stimulation indices were determined by
measuring the relative cellular proliferation via incorporation of 3
H-thymidine.
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The majority of T-cell lines reacted to the peptides
studied. There was also cross-reactivity between wheat
gluten-sensitive T-cell lines and the hordein, gliadin and secalin
peptides.
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PTH, PTS, barley hordein and rye secalin-derived CD
antigen-sensitive T-cell lines showed positive stimulation with PTG.
ω-gliadin/C-hordein peptide and rye-derived peptide are immunogenic
to gluten-sensitive T-cell lines and potentially present in wheat,
rye and barley. Additional CD toxic peptides may be shared.
KEYWORDS:
antigen presentation; coeliac disease; gluten; small intestinal T-cell lines- PMID:
- 27659035
- PMCID:
- PMC5061761
- DOI:
- 10.1111/iep.12199
- [Indexed for MEDLINE]
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