Synthesis and biological activity of phosphoglycolipids from Thermus thermophilus

Yukari Fujimoto, Kunihiro Mitsunobe, Satoko Fujiwara, Motoko Mori, Masahiro Hashimoto, Yasuo Suda, Shoichi Kusumoto, Koichi Fukase

Research output: Contribution to journalArticlepeer-review

12 Citations (Scopus)


An extreme thermophile, Thermus thermophilus, has very unique glycolipids on the cell surface. The acidic immunostimulatory phosphoglycolipid of T. thermophilus was synthesized for the first time, with newly developed glycosylation methods using 3-nitropyridyl (3NPy) and 4,6-dimethoxy-1,3,5- triazin-2-yl (DMT) glycosides as glycosyl donors. The analogues of the phosphoglycolipid, which include a diastereomer possessing the opposite configuration at the diacyl glycerol moiety, were also synthesized. The biological activities of the synthesized compounds were elucidated with cytokine inductions (IL-6 and TNF-α). A synthetic phosphoglycolipid with a natural-type diacyl glycerol configuration showed apparent immunostimulatory activity, whereas its diastereomer did not. The present study revealed that the configuration at the diacyl glycerol moiety of the phosphoglycolipids is important for immunostimulation, suggesting the existence of the particular receptor/recognizing protein that can recognize the stereochemistry of the glycerol part.

Original languageEnglish
Pages (from-to)5034-5041
Number of pages8
JournalOrganic and Biomolecular Chemistry
Issue number30
Publication statusPublished - 2013 Aug 14
Externally publishedYes

ASJC Scopus subject areas

  • Biochemistry
  • Physical and Theoretical Chemistry
  • Organic Chemistry


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