PMID- 12401408 OWN - NLM STAT- MEDLINE DCOM- 20021217 LR - 20220410 IS - 1471-4906 (Print) IS - 1471-4906 (Linking) VI - 23 IP - 11 DP - 2002 Nov TI - Macrophage polarization: tumor-associated macrophages as a paradigm for polarized M2 mononuclear phagocytes. PG - 549-55 AB - Mononuclear phagocytes are versatile cells that can express different functional programs in response to microenvironmental signals. Fully polarized M1 and M2 (or alternatively activated) macrophages are the extremes of a continuum of functional states. Macrophages that infiltrate tumor tissues are driven by tumor-derived and T cell-derived cytokines to acquire a polarized M2 phenotype. These functionally polarized cells, and similarly oriented or immature dendritic cells present in tumors, have a key role in subversion of adaptive immunity and in inflammatory circuits that promote tumor growth and progression. FAU - Mantovani, Alberto AU - Mantovani A AD - Istituto di Ricerche Farmacologiche Mario Negri, Via Eritrea 62, I-20157 Milan, Italy. mantovani@marionegri.it FAU - Sozzani, Silvano AU - Sozzani S FAU - Locati, Massimo AU - Locati M FAU - Allavena, Paola AU - Allavena P FAU - Sica, Antonio AU - Sica A LA - eng PT - Journal Article PT - Review PL - England TA - Trends Immunol JT - Trends in immunology JID - 100966032 RN - 0 (Chemokines) RN - 0 (Cytokines) SB - IM CIN - Trends Immunol. 2003 May;24(5):232-3; author reply 234. PMID: 12738414 MH - Animals MH - Cell Differentiation MH - Chemokines/biosynthesis MH - Cytokines/biosynthesis MH - Humans MH - Macrophage Activation MH - Macrophages/classification/*immunology/pathology MH - Models, Immunological MH - Neoplasms/*immunology/pathology MH - Phagocytes/classification/immunology/pathology MH - Signal Transduction RF - 74 EDAT- 2002/10/29 04:00 MHDA- 2002/12/18 04:00 CRDT- 2002/10/29 04:00 PHST- 2002/10/29 04:00 [pubmed] PHST- 2002/12/18 04:00 [medline] PHST- 2002/10/29 04:00 [entrez] AID - S1471490602023025 [pii] AID - 10.1016/s1471-4906(02)02302-5 [doi] PST - ppublish SO - Trends Immunol. 2002 Nov;23(11):549-55. doi: 10.1016/s1471-4906(02)02302-5.