PMID- 25963795 OWN - NLM STAT- MEDLINE DCOM- 20160216 LR - 20181113 IS - 1432-1335 (Electronic) IS - 0171-5216 (Linking) VI - 141 IP - 12 DP - 2015 Dec TI - Clinicopathological significance of cancer stem-like cell markers in high-grade neuroendocrine carcinoma of the lung. PG - 2121-30 LID - 10.1007/s00432-015-1985-3 [doi] AB - PURPOSE: This study aimed to evaluate the clinicopathological significance of cancer stem-like cell (CSLC) markers in high-grade neuroendocrine carcinoma (HGNEC) of the lung, including small cell lung carcinoma (SCLC) and large cell neuroendocrine carcinoma (LCNEC). METHODS: We retrospectively studied patients who underwent surgical resection of SCLC (n = 60) and LCNEC (n = 45) to analyze their clinicopathological profiles and the immunohistochemical expression of putative CSLC markers (Caveolin, Notch, CD44, CD166, SOX2, ALDH1, and Musashi1). Staining scores for these markers in tumor cells were calculated by multiplying the percentage of positive tumor cells per lesion by the staining intensity level (0, 1, and 2); a score of >/= 10 represented positive expression. RESULTS: There was a difference between SCLC and LCNEC with respect to both SOX2 (55 vs. 27 %, p = 0.003) and CD166 (27 vs. 47 %, p = 0.034) expression. ALDH1 expression was equally observed in SCLC and LCNEC (67 vs. 73 %, p = 0.46), and patients with ALDH1-positive HGNEC had significantly worse recurrence-free survival (RFS) and overall survival (OS) rates than those with ALDH1-negative HGNEC (5-year RFS: 39 vs. 67 %, p = 0.009; 5-year OS: 50 vs. 79 %, p = 0.021). A multivariate analysis revealed that positive ALDH1 expression was an independent unfavorable prognostic factor with respect to both RFS and OS. CONCLUSIONS: The differences in the expression profiles of CSLC markers might reflect morphological differences between SCLC and LCNEC. Positive ALDH1 expression in lung HGNEC was associated with an unfavorable patient prognosis, which suggested that ALDH1-positive tumor cells might be future therapeutic targets for the treatment of lung HGNEC. FAU - Morise, Masahiro AU - Morise M AD - Department of Thoracic Oncology, National Cancer Center Hospital East, Kashiwa, Japan. AD - Pathology Division, Research Center for Innovative Oncology, National Cancer Center Hospital East, Kashiwa, Japan. FAU - Hishida, Tomoyuki AU - Hishida T AD - Department of Thoracic Surgery, National Cancer Center Hospital East, 6-5-1, Kashiwanoha, Kashiwa, Chiba, 277-8577, Japan. thishida@east.ncc.go.jp. FAU - Takahashi, Akiko AU - Takahashi A AD - Department of Thoracic Oncology, National Cancer Center Hospital East, Kashiwa, Japan. FAU - Yoshida, Junji AU - Yoshida J AD - Department of Thoracic Surgery, National Cancer Center Hospital East, 6-5-1, Kashiwanoha, Kashiwa, Chiba, 277-8577, Japan. FAU - Ohe, Yuichiro AU - Ohe Y AD - Department of Thoracic Oncology, National Cancer Center Hospital East, Kashiwa, Japan. AD - Department of Thoracic Oncology, National Cancer Center Hospital, Tokyo, Japan. FAU - Nagai, Kanji AU - Nagai K AD - Department of Thoracic Surgery, National Cancer Center Hospital East, 6-5-1, Kashiwanoha, Kashiwa, Chiba, 277-8577, Japan. FAU - Ishii, Genichiro AU - Ishii G AD - Pathology Division, Research Center for Innovative Oncology, National Cancer Center Hospital East, Kashiwa, Japan. LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20150512 PL - Germany TA - J Cancer Res Clin Oncol JT - Journal of cancer research and clinical oncology JID - 7902060 RN - 0 (Biomarkers, Tumor) SB - IM MH - Adult MH - Aged MH - Aged, 80 and over MH - Biomarkers, Tumor/*metabolism MH - Carcinoma, Large Cell/metabolism/mortality/*secondary MH - Carcinoma, Neuroendocrine/metabolism/mortality/*secondary MH - Female MH - Follow-Up Studies MH - Humans MH - Immunoenzyme Techniques MH - Lung Neoplasms/metabolism/mortality/*pathology MH - Lymphatic Metastasis MH - Male MH - Middle Aged MH - Neoplasm Grading MH - Neoplasm Invasiveness MH - Neoplasm Recurrence, Local/metabolism/mortality/*pathology MH - Neoplasm Staging MH - Neoplastic Stem Cells/metabolism/*pathology MH - Prognosis MH - Retrospective Studies MH - Small Cell Lung Carcinoma/metabolism/mortality/*secondary MH - Survival Rate MH - Young Adult OTO - NOTNLM OT - Aldehyde dehydrogenase 1 (ALDH1) OT - Cancer stem-like cells OT - High-grade neuroendocrine carcinoma OT - Large cell neuroendocrine carcinoma OT - Small cell lung carcinoma EDAT- 2015/05/13 06:00 MHDA- 2016/02/18 06:00 CRDT- 2015/05/13 06:00 PHST- 2015/01/18 00:00 [received] PHST- 2015/04/28 00:00 [accepted] PHST- 2015/05/13 06:00 [entrez] PHST- 2015/05/13 06:00 [pubmed] PHST- 2016/02/18 06:00 [medline] AID - 10.1007/s00432-015-1985-3 [pii] AID - 10.1007/s00432-015-1985-3 [doi] PST - ppublish SO - J Cancer Res Clin Oncol. 2015 Dec;141(12):2121-30. doi: 10.1007/s00432-015-1985-3. Epub 2015 May 12.