PMID- 30400136 OWN - NLM STAT- MEDLINE DCOM- 20190213 LR - 20190215 IS - 2072-6643 (Electronic) IS - 2072-6643 (Linking) VI - 10 IP - 11 DP - 2018 Nov 2 TI - Docoxahexaenoic Acid Induces Apoptosis of Pancreatic Cancer Cells by Suppressing Activation of STAT3 and NF-kappaB. LID - 10.3390/nu10111621 [doi] LID - 1621 AB - The omega3-polyunsaturated fatty acid docosahexenoic acid (DHA) is known to induce apoptosis of cancer cells. In this study, DHA was shown to reduce viability of pancreatic cancer cells (PANC-1) by inducing DNA fragmentation, activating caspase-3, and increasing the ratio of Bax/Bcl-2. To determine the DHA mechanism of action, the impact of DHA on the activation of the key signaling proteins epidermal growth factor receptor (EGFR), signal transducer and activator of transcription factor 3 (STAT3), nuclear transcription factor-kappaB (NF-kappaB), and IkappaBalpha in PANC-1 cells was probed. The observed DHA suppression of NF-kappaB DNA-binding activity was found to result from reduced IkappaBalpha phosphorylation. The observed DHA-induced suppression of STAT3 activation was found to be the result of suppressed EGFR activation, which derives from the inhibitory effect of DHA on the integrity of localization of EGFR to cell membrane lipid rafts. Since the activation of STAT3 and NF-kappaB mediates the expression of survival genes cyclin D1 and survivin, DHA induced apoptosis by suppressing the STAT3/NF-kappaB-cyclin D1/survivin axis. These results support the proposal that DHA-induced apoptosis of pancreatic cells occurs via disruption of key pro-cell survival signaling pathways. We suggest that the consumption of DHA-enriched foods could decrease the incidence of pancreatic cancer. FAU - Park, Mirae AU - Park M AD - Department of Food and Nutrition, Brain Korea 21 PLUS Project, College of Human Ecology, Yonsei University, Seoul 03722, Korea. mirae_0114@naver.com. FAU - Lim, Joo Weon AU - Lim JW AD - Department of Food and Nutrition, Brain Korea 21 PLUS Project, College of Human Ecology, Yonsei University, Seoul 03722, Korea. jwlim11@yonsei.ac.kr. FAU - Kim, Hyeyoung AU - Kim H AUID- ORCID: 0000-0002-7019-917X AD - Department of Food and Nutrition, Brain Korea 21 PLUS Project, College of Human Ecology, Yonsei University, Seoul 03722, Korea. kim626@yonsei.ac.kr. LA - eng GR - Brain Korea 21 PLUS Project/Brain Korea 21 PLUS Project, College of Human Ecology, Yonsei University/ PT - Journal Article DEP - 20181102 PL - Switzerland TA - Nutrients JT - Nutrients JID - 101521595 RN - 0 (BIRC5 protein, human) RN - 0 (CCND1 protein, human) RN - 0 (NF-kappa B) RN - 0 (RNA, Messenger) RN - 0 (STAT3 Transcription Factor) RN - 0 (STAT3 protein, human) RN - 0 (Survivin) RN - 136601-57-5 (Cyclin D1) RN - 25167-62-8 (Docosahexaenoic Acids) RN - EC 2.7.10.1 (EGFR protein, human) RN - EC 2.7.10.1 (ErbB Receptors) SB - IM MH - Apoptosis/*drug effects MH - Cell Line, Tumor MH - Cell Survival/*drug effects MH - Cyclin D1/genetics/metabolism MH - DNA Fragmentation MH - Docosahexaenoic Acids/administration & dosage/*pharmacology MH - Dose-Response Relationship, Drug MH - ErbB Receptors/genetics/metabolism MH - Gene Expression Regulation, Neoplastic/drug effects MH - Humans MH - Membrane Microdomains/drug effects MH - NF-kappa B/metabolism MH - *Pancreatic Neoplasms MH - RNA, Messenger/genetics/metabolism MH - STAT3 Transcription Factor/genetics/metabolism MH - Survivin/genetics/metabolism PMC - PMC6267441 OTO - NOTNLM OT - NF-kappaB OT - STAT3 OT - apoptosis OT - docosahexaenoic acid OT - pancreatic cancer cells COIS- The authors declare no conflict of interest. EDAT- 2018/11/08 06:00 MHDA- 2019/02/14 06:00 PMCR- 2018/11/01 CRDT- 2018/11/08 06:00 PHST- 2018/10/10 00:00 [received] PHST- 2018/10/22 00:00 [revised] PHST- 2018/10/24 00:00 [accepted] PHST- 2018/11/08 06:00 [entrez] PHST- 2018/11/08 06:00 [pubmed] PHST- 2019/02/14 06:00 [medline] PHST- 2018/11/01 00:00 [pmc-release] AID - nu10111621 [pii] AID - nutrients-10-01621 [pii] AID - 10.3390/nu10111621 [doi] PST - epublish SO - Nutrients. 2018 Nov 2;10(11):1621. doi: 10.3390/nu10111621.