PMID- 34206894 OWN - NLM STAT- PubMed-not-MEDLINE LR - 20210727 IS - 1999-4923 (Print) IS - 1999-4923 (Electronic) IS - 1999-4923 (Linking) VI - 13 IP - 7 DP - 2021 Jun 26 TI - Light- and Melanin Nanoparticle-Induced Cytotoxicity in Metastatic Cancer Cells. LID - 10.3390/pharmaceutics13070965 [doi] LID - 965 AB - Melanin nanoparticles are known to be biologically benign to human cells for a wide range of concentrations in a high glucose culture nutrition. Here, we show cytotoxic behavior at high nanoparticle and low glucose concentrations, as well as at low nanoparticle concentration under exposure to (nonionizing) visible radiation. To study these effects in detail, we developed highly monodispersed melanin nanoparticles (both uncoated and glucose-coated). In order to study the effect of significant cellular uptake of these nanoparticles, we employed three cancer cell lines: VM-M3, A375 (derived from melanoma), and HeLa, all known to exhibit strong macrophagic character, i.e., strong nanoparticle uptake through phagocytic ingestion. Our main observations are: (i) metastatic VM-M3 cancer cells massively ingest melanin nanoparticles (mNPs); (ii) the observed ingestion is enhanced by coating mNPs with glucose; (iii) after a certain level of mNP ingestion, the metastatic cancer cells studied here are observed to die-glucose coating appears to slow that process; (iv) cells that accumulate mNPs are much more susceptible to killing by laser illumination than cells that do not accumulate mNPs; and (v) non-metastatic VM-NM1 cancer cells also studied in this work do not ingest the mNPs, and remain unaffected after receiving identical optical energy levels and doses. Results of this study could lead to the development of a therapy for control of metastatic stages of cancer. FAU - Gabriele, Victoria R AU - Gabriele VR AD - Department of Physics, Boston College, Chestnut Hill, MA 02467, USA. FAU - Mazhabi, Robabeh M AU - Mazhabi RM AD - International Academy of Optoelectronics at Zhaoqing, South China Normal University, Zhaoqing 526238, China. FAU - Alexander, Natalie AU - Alexander N AUID- ORCID: 0000-0001-7427-2672 AD - Department of Biology, Boston College, Chestnut Hill, MA 02467, USA. FAU - Mukherjee, Purna AU - Mukherjee P AD - Department of Biology, Boston College, Chestnut Hill, MA 02467, USA. FAU - Seyfried, Thomas N AU - Seyfried TN AUID- ORCID: 0000-0003-1491-3989 AD - Department of Biology, Boston College, Chestnut Hill, MA 02467, USA. FAU - Nwaji, Njemuwa AU - Nwaji N AUID- ORCID: 0000-0003-2350-1396 AD - International Academy of Optoelectronics at Zhaoqing, South China Normal University, Zhaoqing 526238, China. FAU - Akinoglu, Eser M AU - Akinoglu EM AD - International Academy of Optoelectronics at Zhaoqing, South China Normal University, Zhaoqing 526238, China. FAU - Mackiewicz, Andrzej AU - Mackiewicz A AD - Greater Poland Cancer Centre, Poznan University of Medical Sciences, 61-867 Poznan, Poland. FAU - Zhou, Guofu AU - Zhou G AUID- ORCID: 0000-0002-4104-403X AD - International Academy of Optoelectronics at Zhaoqing, South China Normal University, Zhaoqing 526238, China. AD - Guangdong Provincial Key Laboratory of Optical Information Materials and Technology & Institute of Electronic Paper Displays, South China Academy of Advanced Optoelectronics, South China Normal University, Guangzhou 510006, China. FAU - Giersig, Michael AU - Giersig M AUID- ORCID: 0000-0002-5394-0413 AD - International Academy of Optoelectronics at Zhaoqing, South China Normal University, Zhaoqing 526238, China. AD - Institute of Fundamental Technological Research of Polish Academy of Sciences, 02-106 Warsaw, Poland. FAU - Naughton, Michael J AU - Naughton MJ AUID- ORCID: 0000-0002-6733-2398 AD - Department of Physics, Boston College, Chestnut Hill, MA 02467, USA. FAU - Kempa, Krzysztof AU - Kempa K AD - Department of Physics, Boston College, Chestnut Hill, MA 02467, USA. LA - eng GR - 1748906/National Science Foundation/ GR - 2016ZT06C517/Guangdong Innovative and Entrepreneurial Research Team Program/ PT - Journal Article DEP - 20210626 PL - Switzerland TA - Pharmaceutics JT - Pharmaceutics JID - 101534003 PMC - PMC8309021 OTO - NOTNLM OT - cytotoxicity OT - hyperthermia OT - laser medical applications OT - melanin nanoparticles OT - melanoma COIS- The authors declare no conflict of interest. EDAT- 2021/07/03 06:00 MHDA- 2021/07/03 06:01 PMCR- 2021/06/26 CRDT- 2021/07/02 01:29 PHST- 2021/05/21 00:00 [received] PHST- 2021/06/13 00:00 [revised] PHST- 2021/06/23 00:00 [accepted] PHST- 2021/07/02 01:29 [entrez] PHST- 2021/07/03 06:00 [pubmed] PHST- 2021/07/03 06:01 [medline] PHST- 2021/06/26 00:00 [pmc-release] AID - pharmaceutics13070965 [pii] AID - pharmaceutics-13-00965 [pii] AID - 10.3390/pharmaceutics13070965 [doi] PST - epublish SO - Pharmaceutics. 2021 Jun 26;13(7):965. doi: 10.3390/pharmaceutics13070965.