Abstract:
:The tumor microenvironment is host to a complex network of cytokines that contribute to shaping the intratumoral immune reaction. Chromosomal gains and losses, coupled with expression analysis, of 59 cytokines and receptors and their functional networks were investigated in colorectal cancers. Changes in local expression for 13 cytokines were shown. Metastatic patients exhibited an increased frequency of deletions of cytokines from chromosome 4. Interleukin 15 (IL15) deletion corresponded with decreased IL15 expression, a higher risk of tumor recurrence, and reduced patient survival. Decreased IL15 expression affected the local proliferation of B and T lymphocytes. Patients with proliferating B and T cells at the invasive margin and within the tumor center had significantly prolonged disease-free survival. These results delineate chromosomal instability as a mechanism of modulating local cytokine expression in human tumors and underline the major role of IL15. Our data provide further mechanisms resulting in changes of specific immune cell densities within the tumor, and the importance of local active lymphocyte proliferation for patient survival.
journal_name
Sci Transl Medjournal_title
Science translational medicineauthors
Mlecnik B,Bindea G,Angell HK,Sasso MS,Obenauf AC,Fredriksen T,Lafontaine L,Bilocq AM,Kirilovsky A,Tosolini M,Waldner M,Berger A,Fridman WH,Rafii A,Valge-Archer V,Pagès F,Speicher MR,Galon Jdoi
10.1126/scitranslmed.3007240subject
Has Abstractpub_date
2014-03-19 00:00:00pages
228ra37issue
228eissn
1946-6234issn
1946-6242pii
6/228/228ra37journal_volume
6pub_type
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