Differentiation and roles of bone marrow-derived cells on the tumor microenvironment of oral squamous cell carcinoma.

Differentiation and roles of bone marrow-derived cells on the tumor microenvironment of oral squamous cell carcinoma. Oncol Lett. 2019 Dec;18(6):6628-6638 Authors: Anqi C, Takabatake K, Kawai H, Oo MW, Yoshida S, Fujii M, Omori H, Sukegawa S, Nakano K, Tsujigiwa H, Jinhua Z, Nagatsuka H Abstract The stroma affects the properties and dynamics of the tumor. Previous studies have demonstrated that bone marrow-derived cells (BMDCs) possess the capability of differentiating into stromal cells. However, the characteristics and roles of BMDCs in oral squamous cell carcinoma remain unclear. The current study therefore investigated their locations and features by tracing green fluorescent protein (GFP)-labeled BMDCs in a transplantation mouse model. After irradiation, BALB-c nu-nu mice were injected with bone marrow cells from C57BL/6-BALB-C-nu/nu-GFP transgenic mice. These recipient mice were then injected subcutaneously in the head with human squamous cell carcinoma-2 cells. Immunohistochemistry for GFP, Vimentin, CD11b, CD31 and α-smooth muscle actin (SMA), and double-fluorescent immunohistochemistry for GFP-Vimentin, GFP-CD11b, GFP-CD31 and GFP-α-SMA was subsequently performed. Many round-shaped GFP-positive cells were observed in the cancer stroma, which indicated that BMDCs served a predominant role in tumorigenesis. Vimentin(+) GFP(+) cells may also be a member of the cancer-associated stroma, originating from bone marrow. Round or s...
Source: Oncology Letters - Category: Cancer & Oncology Tags: Oncol Lett Source Type: research