TY - JOUR
T1 - Relationship of the chemical structure and immunobiological activities of lipoteichoic acid from Streptococcus faecalis (Enterococcus hirae) ATCC 9790
AU - Tsutsui, Osamu
AU - Kokeguchi, Susumu
AU - Matsumura, Tomohiro
AU - Kato, Keijiro
N1 - Funding Information:
Immunopharmacology is thanked for financial support (K. Kato).
PY - 1991/8
Y1 - 1991/8
N2 - Two molecular species of lipoteichoic acid (LTA 1 and LTA 2) were isolated from whole cells of Streptococcus faecalis (Enterococcus hirae) ATCC 9790 by hydrophobic chromatography on Octyl Sepharose CL-4B. Chemical analysis revealed that LTA 1 and LTA 2 contained two and four acyl lipid anchors respectively. LTA 1 was less active than LTA 2 in inducing cytokines, except interleukin-1 (IL-1), but their in vivo antitumour effects were similar. LTA 2 was a potent inducer of tumour necrosis factor (TNF) and interferon (IFN) production and had excellent antitumour activity against Meth A fibrosarcoma established in mice. Deacylation of LTA 2 by alkaline hydrolysis abolished these biological activities. The phosphatidylglycolipid fraction derived from LTA 2 after acid hydrolysis could also induce TNF, IFN, and IL-1 production, as well as having antitumour activity against Meth A fibrosarcoma. Therefore, the lipid anchor portion of S. faecalis LTA may play an important role in the manifestation of these various biological activities.
AB - Two molecular species of lipoteichoic acid (LTA 1 and LTA 2) were isolated from whole cells of Streptococcus faecalis (Enterococcus hirae) ATCC 9790 by hydrophobic chromatography on Octyl Sepharose CL-4B. Chemical analysis revealed that LTA 1 and LTA 2 contained two and four acyl lipid anchors respectively. LTA 1 was less active than LTA 2 in inducing cytokines, except interleukin-1 (IL-1), but their in vivo antitumour effects were similar. LTA 2 was a potent inducer of tumour necrosis factor (TNF) and interferon (IFN) production and had excellent antitumour activity against Meth A fibrosarcoma established in mice. Deacylation of LTA 2 by alkaline hydrolysis abolished these biological activities. The phosphatidylglycolipid fraction derived from LTA 2 after acid hydrolysis could also induce TNF, IFN, and IL-1 production, as well as having antitumour activity against Meth A fibrosarcoma. Therefore, the lipid anchor portion of S. faecalis LTA may play an important role in the manifestation of these various biological activities.
KW - Interferon production
KW - Interleukin-1 production
KW - Lipoteichoic acid
KW - Phosphatidylglycolipid
KW - Streptococcus faecalis (Enterococcus hirae)
KW - Tumour necrosis factor production
UR - http://www.scopus.com/inward/record.url?scp=0025887772&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=0025887772&partnerID=8YFLogxK
U2 - 10.1016/0378-1097(91)90069-M
DO - 10.1016/0378-1097(91)90069-M
M3 - Article
C2 - 1718341
AN - SCOPUS:0025887772
VL - 76
SP - 211
EP - 218
JO - FEMS Microbiology Letters
JF - FEMS Microbiology Letters
SN - 0378-1097
IS - 4
ER -