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- 저자 : ( Aline Chagas ) (검색결과 1 건)
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( Haeryoung Kim ),( Young-joo Kim ),( Hyungjin Rhee ),( Jeong Eun Yoo ),( Venancio A. F. Alves ),( Gi Jeong Kim ),( Hye Min Kim ),( Paulo Herman ),( Aline Chagas ),( Young Nyun Park ) 대한간학회 2017 춘·추계 학술대회 (KASL) Vol.2017 No.1
Aims: The scirrhous variant of hepatocellular carcinoma (S-HCC) and fibrolamellar HCC (FL-HCC) are less common subtypes of HCC that are characterised by abundant fibrous stroma. Here, we aimed to investigate differences in the tumour microenvironment and the tumour epithelial cell characteristics of S-HCC and FL-HCC. Methods: Whole tissue sections of 17 S-HCCs and 9 FL-HCCs were subjected to immunohistochemical stains for K7, K19, EpCAM, CD56/NCAM, CD163, CD68, pSTAT3, FAP, CCN2 and Ki-67. Results: FL-HCC patients were younger than S-HCC patients (p<0.001), and chronic liver disease was seen in the background of 88.2% of S-HCC and in none of the FL-HCC. CD68 and CD163-positive tumour-infiltrating macrophages and FAP-positive cancer-associated fibroblasts (CAFs) were more abundant in the stroma of S-HCCs compared to FL-HCCs (p<0.05, all). Tumour epithelial K19 expression was more frequent in S-HCCs compared to FL-HCCs (p=0.023). Significant positive correlations were seen between pSTAT3 expression status in tumour epithelial cells and CAFs, the extent of stromal CAF and macrophage infiltration and K19 expression status. No significant differences were seen for K7, EpCAM, CD56/NCAM, CCN2 expression and Ki-67 labelling index between S-HCCs and FL-HCCs. Conclusions: S-HCC and FL-HCC are subtypes of HCC with extensive fibrosis, and the nature of the fibrous stroma differs between them. While the stroma of FL-HCC is composed of dense lamellated collage nous bands with sparse cellular components, S-HCC demonstrates more abundant CAF and tumour-infiltrating macrophages, and stemness- related marker expression, suggesting the presence of a complex tumour microenvironment that may influence the aggressive behaviour of these tumours.
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