Effects of Z-100, a Mycobacterium-tuberculosis-derived arabinomannan, on the LP-BM5 murine leukemia virus infection in mice

Hidetaka Sasaki, Makiko Kobayashi, Richard B Pollard, Fujio Suzuki

Research output: Contribution to journalArticle

7 Scopus citations


Objective: To investigate the effects of Z-100, an arabinomannan extracted from Mycobacterium tuberculosis, on the LP-BM5 murine leukemia virus (LP-BM5 MuLV) infection in mice. Methods: C57BL/6 mice infected intraperitoneally with 4.5 × 102 PFU/mouse of LP-BM5 MuLV (MAIDS mice) were treated intraperitoneally with a 10-mg/kg dose of Z-100 every other day beginning 1 day after the viral infection. MAIDS mice treated with Z-100 were compared with control mice (MAIDS mice treated with saline) for their survival and splenomegaly after LP-BM5 infection. Cytokine-producing profiles of splenic T cells from these two groups of mice were also compared. Results: When MAIDS mice treated with Z-100 were compared with those of control mice, a decrease in splenomegaly and lymphadenopathy was observed. Splenomegaly was markedly enhanced in MAIDS mice treated intraperitoneally with IL-4 or IL-10. When MAIDS mice were treated with Z-100, their survival rates were significantly increased compared to those of controls. Splenic T cells from control mice produced type-2 cytokines (IL-4 and IL-10). However, a decreased production of type-2 cytokines by splenic T cells from MAIDS mice treated with Z-100 was demonstrated. Conclusion: Z-100 could decrease the severity of the LP-BM5 MuLV infection through the regulation of MAIDS-associated type-2 T-cell responses.

Original languageEnglish (US)
Pages (from-to)96-103
Number of pages8
Issue number2
StatePublished - 2001
Externally publishedYes



  • AIDS
  • Murine AIDS
  • Type-2 T-cell responses
  • Z-100

ASJC Scopus subject areas

  • Pathology and Forensic Medicine
  • Clinical Biochemistry
  • Immunology and Allergy
  • Cell Biology

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