Proctor R A, Will J A, Burhop K E, Raetz C R
Infect Immun. 1986 Jun;52(3):905-7. doi: 10.1128/iai.52.3.905-907.1986.
Lipid X, the major biosynthetic precursor of lipid A, has recently been described. Although lipid X is a mitogen and coagulates the Limulus amebocyte lysate, we found that it is not lethal for mice, even when given in large doses (2 X 10(6) micrograms/kg). Furthermore, lipid X was found to give partial protection against a 100% lethal dose of endotoxin, even if the lipid X was given as late as 6 h after endotoxin challenge.
脂质X是脂质A的主要生物合成前体,最近已被描述。尽管脂质X是一种促细胞分裂剂,能使鲎变形细胞溶解物凝固,但我们发现它对小鼠并无致死性,即使大剂量给药(2×10⁶微克/千克)也是如此。此外,还发现脂质X能对100%致死剂量的内毒素提供部分保护,即使在毒素攻击6小时后才给予脂质X。