Immune profiling of the bone marrow microenvironment in patients with high-risk localized prostate cancer.

ABSTRACT: Bone marrow (BM) is a primary metastatic site in prostate cancer (PC) and bone invasion is considered incurable. T cell-mediated immune surveillance is essential in controlling both tumorigenesis and initiation of metastases. Beside tropism, dissemination of PC cells to the BM may be facilitated by defects in BM immune homeostasis predisposing this niche to colonization. To evaluate the BM immune microenvironment in locally advanced, non-metastatic PC, we performed flow cytometry analysis of myeloid and lymphoid subsets in BM aspirates and peripheral blood collected during prostatectomy. Healthy BM aspirates served to establish a reference range for comparison. We found alterations in BM immune composition of PC patients, including an increased CD4/CD8 ratio, enrichment of CD4⁺

SUBMITTER: Heninger E 

PROVIDER: S-EPMC7679037 | biostudies-literature | 2020 Nov

REPOSITORIES: biostudies-literature