PMID- 30806292 OWN - NLM STAT- MEDLINE DCOM- 20190321 LR - 20190321 IS - 2162-6537 (Electronic) IS - 0731-8898 (Linking) VI - 38 IP - 1 DP - 2019 TI - PI3K/Akt Pathway and miR-21 are Involved in N-Ethyl-N-Nitrosourea-Induced F1 Mouse Lung Tumorigenesis: Effect of Inositol Hexaphosphate. PG - 69-81 LID - 10.1615/JEnvironPatholToxicolOncol.2018026684 [doi] AB - The risk of cancer development in offspring due to carcinogen exposure during pregnancy is a serious issue. In this study, we explored the involvement of the phosphatidylinositol 3-kinase (PI3K)/Akt pathway and microRNA-21 (miR-21) in transplacental lung tumorigenesis and its prevention by dietary compound inositol hexaphosphate (IP6) in F1 mice. Balb/c mice were exposed to the N-ethyl-N-nitrosourea (ENU) intraperitoneally on the 17th day of gestation. After weaning, half of the litters were fed with oral 2% IP6. At the end of 30, 120, or 240 days, we did not observe any effect on fetal viability or weight between ENU-exposed and non-exposed litters and the same was true of IP6. Altered expressions of the PI3K/Akt pathway were observed in F1 mice. Further, miR-21 expressions were found to be modulated at the respective time as well, along with the activation of matrix metalloproteinase (MMP-9) and vascular endothelial growth factor expression. Akt activation also enhanced the expression of cyclin D1, cyclooxygenase-2 (COX-2), nuclear factor-kappaB (NF-kappaBp50), and mammalian target of rapamycin (mTOR). IP6-fed F1 mice showed reduced tumorigenesis along with reduced expression of the PI3K/Akt pathway miR-21 and downstream targets. The PI3K/Akt pathway and miR-21 are involved in transplacental lung tumorigenesis, whereas IP6 seemed to affect lung tumorigenesis by suppressing the expression of the PI3K/Akt pathway in F1 mice. FAU - Sahay, Satya AU - Sahay S AD - Environmental Carcinogenesis Laboratory Council of Scientific and Industrial Research (CSIR)-Indian Institute of Toxicology Research (IITR), Mahatma Gandhi Marg, Lucknow 226001, India. FAU - Tiwari, Prakash AU - Tiwari P AD - Environmental Carcinogenesis Laboratory Council of Scientific and Industrial Research (CSIR)-Indian Institute of Toxicology Research (IITR), Mahatma Gandhi Marg, Lucknow 226001, India. FAU - Pandey, Manuraj AU - Pandey M AD - Environmental Carcinogenesis Laboratory Council of Scientific and Industrial Research (CSIR)-Indian Institute of Toxicology Research (IITR), Mahatma Gandhi Marg, Lucknow 226001, India. FAU - Gupta, Krishna P AU - Gupta KP AD - Environmental Carcinogenesis Laboratory Council of Scientific and Industrial Research (CSIR)-Indian Institute of Toxicology Research (IITR), Mahatma Gandhi Marg, Lucknow 226001, India. LA - eng PT - Journal Article PL - United States TA - J Environ Pathol Toxicol Oncol JT - Journal of environmental pathology, toxicology and oncology : official organ of the International Society for Environmental Toxicology and Cancer JID - 8501420 RN - 0 (MIRN21 microRNA, mouse) RN - 0 (MicroRNAs) RN - 7IGF0S7R8I (Phytic Acid) RN - EC 2.7.1.- (Phosphatidylinositol 3-Kinases) RN - EC 2.7.11.1 (Proto-Oncogene Proteins c-akt) SB - IM MH - Animals MH - Carcinogenesis/drug effects/genetics MH - Female MH - Lung Neoplasms/*metabolism/pathology MH - Mice, Inbred BALB C MH - MicroRNAs/metabolism/*physiology MH - Phosphatidylinositol 3-Kinases/metabolism/*physiology MH - Phytic Acid/*pharmacology MH - Proto-Oncogene Proteins c-akt/metabolism/*physiology EDAT- 2019/02/27 06:00 MHDA- 2019/03/22 06:00 CRDT- 2019/02/27 06:00 PHST- 2019/02/27 06:00 [entrez] PHST- 2019/02/27 06:00 [pubmed] PHST- 2019/03/22 06:00 [medline] AID - 4b309b253eb144f8,59b97b3b134afa39 [pii] AID - 10.1615/JEnvironPatholToxicolOncol.2018026684 [doi] PST - ppublish SO - J Environ Pathol Toxicol Oncol. 2019;38(1):69-81. doi: 10.1615/JEnvironPatholToxicolOncol.2018026684.