Intratumor stromal proportion predicts aggressive phenotype of gastric signet ring cell carcinomas

Objective The aim of this study was to evaluate the prognostic significance of the intratumor stromal proportion in gastric signet ring cell (SRC) carcinomas. Background Cancer stroma, as exemplified by cancer-associated fibroblasts (CAFs), plays critical roles in cancer proliferation, invasion, and...

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Veröffentlicht in:Gastric cancer : official journal of the International Gastric Cancer Association and the Japanese Gastric Cancer Association 2017-07, Vol.20 (4), p.591-601
Hauptverfasser: Lee, Dakeun, Ham, In-Hye, Son, Sang Yong, Han, Sang-Uk, Kim, Young-Bae, Hur, Hoon
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container_title Gastric cancer : official journal of the International Gastric Cancer Association and the Japanese Gastric Cancer Association
container_volume 20
creator Lee, Dakeun
Ham, In-Hye
Son, Sang Yong
Han, Sang-Uk
Kim, Young-Bae
Hur, Hoon
description Objective The aim of this study was to evaluate the prognostic significance of the intratumor stromal proportion in gastric signet ring cell (SRC) carcinomas. Background Cancer stroma, as exemplified by cancer-associated fibroblasts (CAFs), plays critical roles in cancer proliferation, invasion, and metastasis. Methods One hundred seventy-five SRC carcinoma cases were classified according to the intratumor desmoplastic stromal proportion to then analyze the clinicopathologic characteristics of stroma-rich cases. We also investigated the impact of CAFs on the migration as well as on the phenotypic changes of gastric SRC carcinomas in vitro. Furthermore, we performed RNA sequencing of a pair of CAFs and normal-tissue-associated fibroblasts. Results Stroma-rich SRC carcinomas (64 of 175 cases, 36.5%) were associated with female patients ( P  = 0.045), large tumor size ( P  = 0.007), higher T category ( P  
doi_str_mv 10.1007/s10120-016-0669-2
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Background Cancer stroma, as exemplified by cancer-associated fibroblasts (CAFs), plays critical roles in cancer proliferation, invasion, and metastasis. Methods One hundred seventy-five SRC carcinoma cases were classified according to the intratumor desmoplastic stromal proportion to then analyze the clinicopathologic characteristics of stroma-rich cases. We also investigated the impact of CAFs on the migration as well as on the phenotypic changes of gastric SRC carcinomas in vitro. Furthermore, we performed RNA sequencing of a pair of CAFs and normal-tissue-associated fibroblasts. Results Stroma-rich SRC carcinomas (64 of 175 cases, 36.5%) were associated with female patients ( P  = 0.045), large tumor size ( P  = 0.007), higher T category ( P  &lt; 0.001), and the presence of perineural invasion ( P  = 0.018). Patients with stroma-rich SRC carcinomas had a significantly shorter disease-free survival ( P  &lt; 0.001) and overall survival ( P  &lt; 0.001). However, in a subgroup analysis, the prognostic significance of the stromal proportion correlated only with patients with T3/4 disease. From multivariate analysis, the high stromal proportion is an independent prognostic factor to predict worse disease-free survival (hazard ratio 2.288; P  = 0.001) and overall survival (hazard ratio 2.503; P  = 0.001). We found that CAFs enhanced the migratory abilities of cancer cells through the epithelial–mesenchymal transition, and RNA sequencing results confirmed these findings. Conclusions The intratumor stromal proportion could be a useful prognostic biomarker and a potential therapeutic target in gastric SRC carcinomas.</description><identifier>ISSN: 1436-3291</identifier><identifier>EISSN: 1436-3305</identifier><identifier>DOI: 10.1007/s10120-016-0669-2</identifier><identifier>PMID: 27858181</identifier><language>eng</language><publisher>Tokyo: Springer Japan</publisher><subject>Abdominal Surgery ; Adult ; Aged ; Aged, 80 and over ; Cancer ; Cancer Research ; Cancer-Associated Fibroblasts - pathology ; Carcinoma ; Carcinoma, Signet Ring Cell - mortality ; Carcinoma, Signet Ring Cell - pathology ; Cell migration ; Disease-Free Survival ; Female ; Fibroblasts ; Gastric cancer ; Gastroenterology ; Humans ; Kaplan-Meier Estimate ; Male ; Medicine ; Medicine &amp; Public Health ; Mesenchyme ; Metastases ; Middle Aged ; Multivariate analysis ; Oncology ; Original Article ; Phenotype ; Prognosis ; Ribonucleic acid ; RNA ; Src protein ; Stomach Neoplasms - mortality ; Stomach Neoplasms - pathology ; Stroma ; Surgical Oncology ; Survival ; Tumor Microenvironment ; Young Adult</subject><ispartof>Gastric cancer : official journal of the International Gastric Cancer Association and the Japanese Gastric Cancer Association, 2017-07, Vol.20 (4), p.591-601</ispartof><rights>The International Gastric Cancer Association and The Japanese Gastric Cancer Association 2016</rights><rights>Gastric Cancer is a copyright of Springer, 2017.</rights><lds50>peer_reviewed</lds50><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c532t-76a48eb27014cabc122bade32ec1433b3dce0987c42e647944e7ff6bf946a7243</citedby><cites>FETCH-LOGICAL-c532t-76a48eb27014cabc122bade32ec1433b3dce0987c42e647944e7ff6bf946a7243</cites><orcidid>0000-0002-5435-5363</orcidid></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktopdf>$$Uhttps://link.springer.com/content/pdf/10.1007/s10120-016-0669-2$$EPDF$$P50$$Gspringer$$H</linktopdf><linktohtml>$$Uhttps://link.springer.com/10.1007/s10120-016-0669-2$$EHTML$$P50$$Gspringer$$H</linktohtml><link.rule.ids>314,776,780,27901,27902,41464,42533,51294</link.rule.ids><backlink>$$Uhttps://www.ncbi.nlm.nih.gov/pubmed/27858181$$D View this record in MEDLINE/PubMed$$Hfree_for_read</backlink></links><search><creatorcontrib>Lee, Dakeun</creatorcontrib><creatorcontrib>Ham, In-Hye</creatorcontrib><creatorcontrib>Son, Sang Yong</creatorcontrib><creatorcontrib>Han, Sang-Uk</creatorcontrib><creatorcontrib>Kim, Young-Bae</creatorcontrib><creatorcontrib>Hur, Hoon</creatorcontrib><title>Intratumor stromal proportion predicts aggressive phenotype of gastric signet ring cell carcinomas</title><title>Gastric cancer : official journal of the International Gastric Cancer Association and the Japanese Gastric Cancer Association</title><addtitle>Gastric Cancer</addtitle><addtitle>Gastric Cancer</addtitle><description>Objective The aim of this study was to evaluate the prognostic significance of the intratumor stromal proportion in gastric signet ring cell (SRC) carcinomas. Background Cancer stroma, as exemplified by cancer-associated fibroblasts (CAFs), plays critical roles in cancer proliferation, invasion, and metastasis. Methods One hundred seventy-five SRC carcinoma cases were classified according to the intratumor desmoplastic stromal proportion to then analyze the clinicopathologic characteristics of stroma-rich cases. We also investigated the impact of CAFs on the migration as well as on the phenotypic changes of gastric SRC carcinomas in vitro. Furthermore, we performed RNA sequencing of a pair of CAFs and normal-tissue-associated fibroblasts. Results Stroma-rich SRC carcinomas (64 of 175 cases, 36.5%) were associated with female patients ( P  = 0.045), large tumor size ( P  = 0.007), higher T category ( P  &lt; 0.001), and the presence of perineural invasion ( P  = 0.018). Patients with stroma-rich SRC carcinomas had a significantly shorter disease-free survival ( P  &lt; 0.001) and overall survival ( P  &lt; 0.001). However, in a subgroup analysis, the prognostic significance of the stromal proportion correlated only with patients with T3/4 disease. From multivariate analysis, the high stromal proportion is an independent prognostic factor to predict worse disease-free survival (hazard ratio 2.288; P  = 0.001) and overall survival (hazard ratio 2.503; P  = 0.001). We found that CAFs enhanced the migratory abilities of cancer cells through the epithelial–mesenchymal transition, and RNA sequencing results confirmed these findings. 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Background Cancer stroma, as exemplified by cancer-associated fibroblasts (CAFs), plays critical roles in cancer proliferation, invasion, and metastasis. Methods One hundred seventy-five SRC carcinoma cases were classified according to the intratumor desmoplastic stromal proportion to then analyze the clinicopathologic characteristics of stroma-rich cases. We also investigated the impact of CAFs on the migration as well as on the phenotypic changes of gastric SRC carcinomas in vitro. Furthermore, we performed RNA sequencing of a pair of CAFs and normal-tissue-associated fibroblasts. Results Stroma-rich SRC carcinomas (64 of 175 cases, 36.5%) were associated with female patients ( P  = 0.045), large tumor size ( P  = 0.007), higher T category ( P  &lt; 0.001), and the presence of perineural invasion ( P  = 0.018). Patients with stroma-rich SRC carcinomas had a significantly shorter disease-free survival ( P  &lt; 0.001) and overall survival ( P  &lt; 0.001). However, in a subgroup analysis, the prognostic significance of the stromal proportion correlated only with patients with T3/4 disease. From multivariate analysis, the high stromal proportion is an independent prognostic factor to predict worse disease-free survival (hazard ratio 2.288; P  = 0.001) and overall survival (hazard ratio 2.503; P  = 0.001). We found that CAFs enhanced the migratory abilities of cancer cells through the epithelial–mesenchymal transition, and RNA sequencing results confirmed these findings. Conclusions The intratumor stromal proportion could be a useful prognostic biomarker and a potential therapeutic target in gastric SRC carcinomas.</abstract><cop>Tokyo</cop><pub>Springer Japan</pub><pmid>27858181</pmid><doi>10.1007/s10120-016-0669-2</doi><tpages>11</tpages><orcidid>https://orcid.org/0000-0002-5435-5363</orcidid><oa>free_for_read</oa></addata></record>
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subjects Abdominal Surgery
Adult
Aged
Aged, 80 and over
Cancer
Cancer Research
Cancer-Associated Fibroblasts - pathology
Carcinoma
Carcinoma, Signet Ring Cell - mortality
Carcinoma, Signet Ring Cell - pathology
Cell migration
Disease-Free Survival
Female
Fibroblasts
Gastric cancer
Gastroenterology
Humans
Kaplan-Meier Estimate
Male
Medicine
Medicine & Public Health
Mesenchyme
Metastases
Middle Aged
Multivariate analysis
Oncology
Original Article
Phenotype
Prognosis
Ribonucleic acid
RNA
Src protein
Stomach Neoplasms - mortality
Stomach Neoplasms - pathology
Stroma
Surgical Oncology
Survival
Tumor Microenvironment
Young Adult
title Intratumor stromal proportion predicts aggressive phenotype of gastric signet ring cell carcinomas
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