PMID- 26775891 OWN - NLM STAT- MEDLINE DCOM- 20180117 LR - 20180117 IS - 2210-741X (Electronic) IS - 2210-7401 (Linking) VI - 40 IP - 4 DP - 2016 Sep TI - Sulfasalazine, a therapeutic agent for ulcerative colitis, inhibits the growth of CD44v9(+) cancer stem cells in ulcerative colitis-related cancer. PG - 487-93 LID - S2210-7401(15)00288-0 [pii] LID - 10.1016/j.clinre.2015.11.007 [doi] AB - BACKGROUND AND OBJECTIVE: Sulfasalazine reduces the risk of ulcerative colitis (UC)-related cancer through its anti-inflammatory effect and induction of oxidative stress in cancer cells by inhibiting the glutamate-cystine transporter, which is closely associated with the cancer stem cell surface marker CD44v9. This study aimed to quantify the effects of sulfasalazine on CD44v9 expression and pathological factors in colorectal cancers (CRCs) arising from UC. METHODS: Twenty-six patients with UC-related cancer were classified into groups according to the length of sulfasalazine treatment as follows: (1) long-term (LT) (>/= 5 years) and (2) short-term (ST) (< 5 years). Using immunohistochemistry, we compared CD44v9 and Ki-67 expression and pathological characteristics of each group's tumors. In vitro assay was performed to investigate the effect of sulfasalazine on epithelial differentiation and proliferation of CD44(+) cancer cells. RESULTS: Immunohistochemical analysis revealed that CD44v9 expression tended to be lower in the LT group (LT:ST=15.4%:46.2%, P=0.20), and Ki-67/CD44v9 double-stained cells were significantly lower in the LT group (LT:ST=0%:6.9%, P=0.01). Pathologically, the frequency of well-differentiated adenocarcinomas was higher in the LT group (LT:ST=84.6%:38.5%, P=0.04). In vitro assay revealed that sulfasalazine promoted the expression of epithelial differentiation markers (E-cadherin and CDX2) and inhibited the proliferation of CD44(+) cancer cells. CONCLUSIONS: Long-term sulfasalazine administration reduced proliferative CD44v9(+) cells and increased the degree of differentiation of adenocarcinomas. These findings indicate the importance of CD44v9(+) cells in UC-related cancer progression and suggest that sulfasalazine may serve as a novel therapeutic agent that targets CD44v9(+) cells. CI - Copyright (c) 2015 Elsevier Masson SAS. All rights reserved. FAU - Seishima, Ryo AU - Seishima R AD - Department of surgery, Keio university school of medicine, 35, Shinano-machi, 1608582 Shinjuku-ku, Tokyo, Japan; Division of gene regulation, institute for advanced medical research, Keio university school of medicine, 35, Shinano-machi, 1608582 Shinjuku-ku, Tokyo, Japan. FAU - Okabayashi, Koji AU - Okabayashi K AD - Department of surgery, Keio university school of medicine, 35, Shinano-machi, 1608582 Shinjuku-ku, Tokyo, Japan. Electronic address: okabayashikoji@gmail.com. FAU - Nagano, Osamu AU - Nagano O AD - Division of gene regulation, institute for advanced medical research, Keio university school of medicine, 35, Shinano-machi, 1608582 Shinjuku-ku, Tokyo, Japan. FAU - Hasegawa, Hirotoshi AU - Hasegawa H AD - Department of surgery, Keio university school of medicine, 35, Shinano-machi, 1608582 Shinjuku-ku, Tokyo, Japan. FAU - Tsuruta, Masashi AU - Tsuruta M AD - Department of surgery, Keio university school of medicine, 35, Shinano-machi, 1608582 Shinjuku-ku, Tokyo, Japan. FAU - Shimoda, Masayuki AU - Shimoda M AD - Department of pathology, Keio university school of medicine, 35, Shinano-machi, 1608582 Shinjuku-ku, Tokyo, Japan. FAU - Kameyama, Kaori AU - Kameyama K AD - Department of pathology, Keio university school of medicine, 35, Shinano-machi, 1608582 Shinjuku-ku, Tokyo, Japan. FAU - Saya, Hideyuki AU - Saya H AD - Division of gene regulation, institute for advanced medical research, Keio university school of medicine, 35, Shinano-machi, 1608582 Shinjuku-ku, Tokyo, Japan. FAU - Kitagawa, Yuko AU - Kitagawa Y AD - Department of surgery, Keio university school of medicine, 35, Shinano-machi, 1608582 Shinjuku-ku, Tokyo, Japan. LA - eng PT - Journal Article DEP - 20160105 PL - France TA - Clin Res Hepatol Gastroenterol JT - Clinics and research in hepatology and gastroenterology JID - 101553659 RN - 0 (CD44 protein, human) RN - 0 (CDX2 Transcription Factor) RN - 0 (CDX2 protein, human) RN - 0 (Cadherins) RN - 0 (Gastrointestinal Agents) RN - 0 (Hyaluronan Receptors) RN - 0 (Ki-67 Antigen) RN - 0 (RNA, Messenger) RN - 3XC8GUZ6CB (Sulfasalazine) SB - IM MH - Adenocarcinoma/pathology MH - Adult MH - Aged MH - CDX2 Transcription Factor/metabolism MH - Cadherins/metabolism MH - Cell Differentiation/drug effects MH - Cell Proliferation/drug effects MH - Colitis, Ulcerative/drug therapy MH - Colorectal Neoplasms/*pathology MH - Down-Regulation MH - Female MH - Gastrointestinal Agents/*pharmacology MH - Humans MH - Hyaluronan Receptors/genetics/*metabolism MH - Immunohistochemistry MH - Ki-67 Antigen/metabolism MH - Male MH - Middle Aged MH - Neoplastic Stem Cells/*drug effects MH - RNA, Messenger/metabolism MH - Retrospective Studies MH - Sulfasalazine/*pharmacology EDAT- 2016/01/19 06:00 MHDA- 2018/01/18 06:00 CRDT- 2016/01/19 06:00 PHST- 2015/05/19 00:00 [received] PHST- 2015/09/05 00:00 [revised] PHST- 2015/11/11 00:00 [accepted] PHST- 2016/01/19 06:00 [entrez] PHST- 2016/01/19 06:00 [pubmed] PHST- 2018/01/18 06:00 [medline] AID - S2210-7401(15)00288-0 [pii] AID - 10.1016/j.clinre.2015.11.007 [doi] PST - ppublish SO - Clin Res Hepatol Gastroenterol. 2016 Sep;40(4):487-93. doi: 10.1016/j.clinre.2015.11.007. Epub 2016 Jan 5.