PMID- 8604018 OWN - NLM STAT- MEDLINE DCOM- 19960515 LR - 20191210 IS - 0741-5400 (Print) IS - 0741-5400 (Linking) VI - 59 IP - 3 DP - 1996 Mar TI - Activation of alveolar macrophage TNF and MCP-1 expression in vivo by a synthetic peptide of C-reactive protein. PG - 397-402 AB - Administration of multilamellar vesicles (MLV) encapsulating a synthetic peptide (RS-83277) derived from human C-reactive protein (CRP) augments anti-tumor activity of murine alveolar macrophages and reduces established pulmonary metastases of experimental tumors. To explore mechanisms involved in these phenomena, we investigated cytokine and integrin (CDllb) expression of bronchoalveolar lavage (BAL)-derived alveolar macrophages in control (blank MLV) and RS-83277-MLV-treated C57BI mice. Alveolar macrophage production of tumor necrosis factor alpha (TNF-alpha) and monocyte chemoattractant bioactivity increased at 48 h after treatment with RS-83277-MLV but not control MLV. Chemoattractant activity was neutralized by antibody to monocyte chemoattractant protein-1 (MCP-1), but not irrelevant immunoglobulin G(IgG). Changes were reflected by augmented TNF-alpha and MCP-1 mRNA levels in pulmonary tissue and enhanced CD11b expression on mononuclear leukocytes derived from total lung tissue, but not on BAL-derived alveolar macrophages. Results suggest that RS-83277-MLV treatment is associated with activation of alveolar macrophage TNF-alpha and MCP-1 production and up-regulation of adhesion molecules on pulmonary mononuclear leukocytes but not on alveolar macrophages. FAU - Barna, B P AU - Barna BP AD - Department of Clinical Pathology, Cleveland Clinic Foundation, Ohio, USA. FAU - Thomassen, M J AU - Thomassen MJ FAU - Zhou, P AU - Zhou P FAU - Pettay, J AU - Pettay J FAU - Singh-Burgess, S AU - Singh-Burgess S FAU - Deodhar, S D AU - Deodhar SD LA - eng GR - CA49950/CA/NCI NIH HHS/United States PT - Journal Article PT - Research Support, Non-U.S. Gov't PT - Research Support, U.S. Gov't, P.H.S. PL - England TA - J Leukoc Biol JT - Journal of leukocyte biology JID - 8405628 RN - 0 (Chemokine CCL2) RN - 0 (Chemokines) RN - 0 (Cytokines) RN - 0 (Immunologic Factors) RN - 0 (Intercellular Signaling Peptides and Proteins) RN - 0 (Peptide Fragments) RN - 0 (Peptides) RN - 0 (RNA, Messenger) RN - 0 (RS 83277) RN - 0 (Tumor Necrosis Factor-alpha) RN - 9007-41-4 (C-Reactive Protein) SB - IM MH - Amino Acid Sequence MH - Animals MH - Bronchoalveolar Lavage Fluid/cytology MH - C-Reactive Protein/chemistry/*pharmacology MH - Chemokine CCL2/*metabolism MH - Chemokines/genetics MH - Cytokines/genetics MH - Gene Expression MH - Immunologic Factors/pharmacology MH - Intercellular Signaling Peptides and Proteins MH - *Macrophage Activation MH - Macrophages, Alveolar/*immunology MH - Male MH - Mice MH - Mice, Inbred C57BL MH - Molecular Sequence Data MH - Peptide Fragments/pharmacology MH - Peptides/pharmacology MH - RNA, Messenger/genetics MH - Tumor Necrosis Factor-alpha/*metabolism EDAT- 1996/03/01 00:00 MHDA- 1996/03/01 00:01 CRDT- 1996/03/01 00:00 PHST- 1996/03/01 00:00 [pubmed] PHST- 1996/03/01 00:01 [medline] PHST- 1996/03/01 00:00 [entrez] AID - 10.1002/jlb.59.3.397 [doi] PST - ppublish SO - J Leukoc Biol. 1996 Mar;59(3):397-402. doi: 10.1002/jlb.59.3.397.