PMID- 32899112 OWN - NLM STAT- PubMed-not-MEDLINE LR - 20201028 IS - 2075-4426 (Print) IS - 2075-4426 (Electronic) IS - 2075-4426 (Linking) VI - 10 IP - 3 DP - 2020 Sep 3 TI - Induction of Micronuclei in Cervical Cancer Treated with Radiotherapy. LID - 10.3390/jpm10030110 [doi] LID - 110 AB - Micronuclei (MN) trigger antitumor immune responses via the cyclic GMP-AMP synthase-signaling effector stimulator of interferon genes (cGAS-STING) pathway. Radiotherapy induces MN in peripheral blood lymphocytes. However, data for solid tumors are lacking. Here, we analyzed MN post-radiotherapy in solid tumor samples. Tumor biopsy specimens were obtained from seven prospectively recruited patients with cervical cancer, before treatment and after receiving radiotherapy at a dose of 10 Gy (in five fractions). The samples were stained with 4',6-diamidino-2-phenylindole dihydrochloride, and 200 nuclei per sample were randomly identified and assessed for the presence of MN or apoptosis, based on nuclear morphology. The median number of MN-harboring nuclei was significantly greater in samples from patients treated with radiotherapy than in pre-treatment samples (151 (range, 16-327) versus 28 (range, 0-61); p = 0.015). No significant differences in the number of apoptotic nuclei were observed between pre-treatment and 10 Gy samples (5 (range, 0-30) versus 12 (range, 2-30); p = 0.30). This is the first report to demonstrate MN induction by radiotherapy in solid tumors. The results provide clinical evidence of the activation of antitumor immune responses by radiotherapy. FAU - Kobayashi, Daijiro AU - Kobayashi D AUID- ORCID: 0000-0001-8887-9520 AD - Department of Radiation Oncology, Gunma Prefectural Cancer Center, Gunma 373-8550, Japan. FAU - Oike, Takahiro AU - Oike T AD - Department of Radiation Oncology, Gunma University Graduate School of Medicine, Gunma 371-8511, Japan. FAU - Murata, Kazutoshi AU - Murata K AD - QST Hospital, National Institute for Quantum and Radiological Science and Technology, Chiba 263-8555, Japan. FAU - Irie, Daisuke AU - Irie D AD - Department of Radiation Oncology, Gunma University Graduate School of Medicine, Gunma 371-8511, Japan. FAU - Hirota, Yuka AU - Hirota Y AD - Department of Radiation Oncology, Gunma University Graduate School of Medicine, Gunma 371-8511, Japan. FAU - Sato, Hiro AU - Sato H AD - Department of Radiation Oncology, Gunma University Graduate School of Medicine, Gunma 371-8511, Japan. FAU - Shibata, Atsushi AU - Shibata A AUID- ORCID: 0000-0001-8912-6977 AD - Gunma University Initiative for Advanced Research (GIAR), Gunma University, Gunma 371-8511, Japan. FAU - Ohno, Tatsuya AU - Ohno T AUID- ORCID: 0000-0002-6703-3144 AD - Department of Radiation Oncology, Gunma University Graduate School of Medicine, Gunma 371-8511, Japan. AD - Gunma University Heavy Ion Medical Center, Gunma 371-8511, Japan. LA - eng PT - Journal Article DEP - 20200903 PL - Switzerland TA - J Pers Med JT - Journal of personalized medicine JID - 101602269 PMC - PMC7563241 OTO - NOTNLM OT - STING OT - abscopal effect OT - cGAS OT - immunotherapy OT - micronuclei OT - radiotherapy OT - uterine cervical cancer COIS- The authors declare no conflict of interest. EDAT- 2020/09/10 06:00 MHDA- 2020/09/10 06:01 PMCR- 2020/09/01 CRDT- 2020/09/09 01:02 PHST- 2020/08/11 00:00 [received] PHST- 2020/08/28 00:00 [revised] PHST- 2020/09/01 00:00 [accepted] PHST- 2020/09/09 01:02 [entrez] PHST- 2020/09/10 06:00 [pubmed] PHST- 2020/09/10 06:01 [medline] PHST- 2020/09/01 00:00 [pmc-release] AID - jpm10030110 [pii] AID - jpm-10-00110 [pii] AID - 10.3390/jpm10030110 [doi] PST - epublish SO - J Pers Med. 2020 Sep 3;10(3):110. doi: 10.3390/jpm10030110.