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2017 ; 8
(3
): 469-478
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Daughter Cells and Erythroid Cells Budding from PGCCs and Their
Clinicopathological Significances in Colorectal Cancer
#MMPMID28261349
Zhang D
; Yang X
; Yang Z
; Fei F
; Li S
; Qu J
; Zhang M
; Li Y
; Zhang X
; Zhang S
J Cancer
2017[]; 8
(3
): 469-478
PMID28261349
show ga
Purpose: We previously reported that polyploid giant cancer cells (PGCCs) induced
by cobalt chloride (CoCl(2)) exhibit cancer stem cell properties. Daughter cells
generated by PGCCs possess epithelial mesenchymal transition (EMT) phenotype
changes and EMT plays an important role in cancer development and progression.
This study investigated the characteristics of PGCCs from LoVo and HCT116 induced
by CoCl(2) and the clinicopathological significances of PGCCs in colorectal
cancer (CRC). Materials and Methods: Western blotting and immunocytochemical
staining were used to compare the expression levels of EMT-related proteins
between PGCCs with budding daughter cells and the control cells. In addition,
tissue samples were collected from 159 patients with CRC for analysis of PGCCs,
vasculogenic mimicry (VM), and single stromal PGCCs with budding, as well as
immunohistochemical staining for cathepsin B, vimentin, and hemoglobin A.
Results: Single PGCCs induced by CoCl(2) formed spheroids in vitro. Poorly
differentiated CRCs showed the highest numbers of PGCCs and VM, and expression of
cathepsin B. There was greater expression of EMT-related proteins in PGCCs with
budding daughter cells than in control cells. The expression of vimentin located
in PGCC nuclei. Single stomal PGCCs with budding were detected in 27.45% of well
differentiated, 50% of moderately differentiated, and 90.20% of poorly
differentiated CRC samples. PGCCs can generate erythroid cells that express
delta-hemoglobin to form VM. Erythroid cells generated by PGCCs were positive for
hemoglobin A immunocytochemical staining. Conclusion: PGCCs from LoVo and HCT116
treated by CoCl(2) exhibited cancer stem cell properties. The number of PGCCs and
VM were associated with CRC differentiation and daughter cells budded from PGCCs
may promote the lymph node metastasis via expression of EMT-related proteins.
PGCCs and their newly generated erythroid cells form VM structures.