|
1
|
Ikeda-Motonakano R, Hirabayashi-Nishimuta F, Yada N, Yamasaki R, Nagai-Yoshioka Y, Usui M, Nakazawa K, Yoshiga D, Yoshioka I, Ariyoshi W. Fabrication of a Three-Dimensional Spheroid Culture System for Oral Squamous Cell Carcinomas Using a Microfabricated Device. Cancers (Basel) 2023; 15:5162. [PMID: 37958336 PMCID: PMC10649954 DOI: 10.3390/cancers15215162] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2023] [Revised: 10/21/2023] [Accepted: 10/23/2023] [Indexed: 11/15/2023] Open
Abstract
Cancer stem cells (CSCs) are considered to be responsible for recurrence, metastasis, and resistance to treatment in many types of cancers; therefore, new treatment strategies targeting CSCs are attracting attention. In this study, we fabricated a polyethylene glycol-tagged microwell device that enabled spheroid formation from human oral squamous carcinoma cells. HSC-3 and Ca9-22 cells cultured in the microwell device aggregated and generated a single spheroid per well within 24-48 h. The circular shape and smooth surface of spheroids were maintained for up to five days, and most cells comprising the spheroids were Calcein AM-positive viable cells. Interestingly, the mRNA expression of CSC markers (Cd44, Oct4, Nanog, and Sox2) were significantly higher in the spheroids than in the monolayer cultures. CSC marker-positive cells were observed throughout the spheroids. Moreover, resistance to cisplatin was enhanced in spheroid-cultured cells compared to that in the monolayer-cultured cells. Furthermore, some CSC marker genes were upregulated in HSC-3 and Ca9-22 cells that were outgrown from spheroids. In xenograft model, the tumor growth in the spheroid implantation group was comparable to that in the monolayer culture group. These results suggest that our spheroid culture system may be a high-throughput tool for producing uniform CSCs in large numbers from oral cancer cells.
Collapse
Affiliation(s)
- Reiko Ikeda-Motonakano
- Division of Infections and Molecular Biology, Department of Health Promotion, Kyushu Dental University, 2-6-1 Manazuru, Kokurakita-ku, Kitakyushu, Fukuoka 803-8580, Japan; (R.I.-M.); (R.Y.); (Y.N.-Y.)
- Division of Oral Medicine, Department of Science of Physical Function, Kyushu Dental University, 2-6-1 Manazuru, Kokurakita-ku, Kitakyushu, Fukuoka 803-8580, Japan; (F.H.-N.); (D.Y.); (I.Y.)
| | - Fumika Hirabayashi-Nishimuta
- Division of Oral Medicine, Department of Science of Physical Function, Kyushu Dental University, 2-6-1 Manazuru, Kokurakita-ku, Kitakyushu, Fukuoka 803-8580, Japan; (F.H.-N.); (D.Y.); (I.Y.)
| | - Naomi Yada
- Division of Oral Pathology, Department of Health Promotion, Kyushu Dental University, 2-6-1 Manazuru, Kokurakita-ku, Kitakyushu, Fukuoka 803-8580, Japan;
| | - Ryota Yamasaki
- Division of Infections and Molecular Biology, Department of Health Promotion, Kyushu Dental University, 2-6-1 Manazuru, Kokurakita-ku, Kitakyushu, Fukuoka 803-8580, Japan; (R.I.-M.); (R.Y.); (Y.N.-Y.)
| | - Yoshie Nagai-Yoshioka
- Division of Infections and Molecular Biology, Department of Health Promotion, Kyushu Dental University, 2-6-1 Manazuru, Kokurakita-ku, Kitakyushu, Fukuoka 803-8580, Japan; (R.I.-M.); (R.Y.); (Y.N.-Y.)
| | - Michihiko Usui
- Division of Periodontology, Department of Oral Function, Kyushu Dental University, 2-6-1 Manazuru, Kokurakita-ku, Kitakyushu, Fukuoka 803-8580, Japan;
| | - Kohji Nakazawa
- Department of Life and Environment Engineering, The University of Kitakyushu, 1-1 Hibikino, Wakamatsu-ku, Kitakyushu, Fukuoka 808-0135, Japan;
| | - Daigo Yoshiga
- Division of Oral Medicine, Department of Science of Physical Function, Kyushu Dental University, 2-6-1 Manazuru, Kokurakita-ku, Kitakyushu, Fukuoka 803-8580, Japan; (F.H.-N.); (D.Y.); (I.Y.)
| | - Izumi Yoshioka
- Division of Oral Medicine, Department of Science of Physical Function, Kyushu Dental University, 2-6-1 Manazuru, Kokurakita-ku, Kitakyushu, Fukuoka 803-8580, Japan; (F.H.-N.); (D.Y.); (I.Y.)
| | - Wataru Ariyoshi
- Division of Infections and Molecular Biology, Department of Health Promotion, Kyushu Dental University, 2-6-1 Manazuru, Kokurakita-ku, Kitakyushu, Fukuoka 803-8580, Japan; (R.I.-M.); (R.Y.); (Y.N.-Y.)
| |
Collapse
|
|
2
|
Pedrotti E, Bertolin M, Fasolo A, Bonacci E, Bosello F, Ponzin D, Marchini G. Autologous simple conjunctival epithelial transplantation for primary pterygium. Int Ophthalmol 2022; 42:3673-3680. [PMID: 35612687 DOI: 10.1007/s10792-022-02364-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2021] [Accepted: 04/28/2022] [Indexed: 11/30/2022]
Abstract
PURPOSE To evaluate the feasibility of a new method of conjunctival transplantation to achieve recovery of the normal conjunctival epithelium over the bare sclera after pterygium excision and prevent its recurrence. METHODS After excision of the primary pterygium, we performed simple conjunctival epithelial transplantation (SCET) in which we glued an amniotic membrane patch pre-loaded with tiny autologous conjunctival tissue fragments over the scleral defect. Slit-lamp evaluation was performed at 2 and 7-10 days, and then at 1, 3, 6, and 12 months after surgery, together with confocal microscopy at 3, 6, and 12 months. RESULTS Surgical excision and SCET for nasal primary pterygium were performed in 6 eyes (6 patients). No graft detachment occurred. An inflammatory granuloma was excised without sequelae in one patient 2 months after surgery. No signs of recurrence or sight-threatening complications were recorded at 12 months, and in vivo confocal microscopy showed progressive expansion of the conjunctival cell population and formation of a clear corneal-conjunctival transition. CONCLUSIONS SCET takes advantage of the ability of the amniotic membrane and conjunctival cells to renew. Outcomes after SCET are comparable to conventional conjunctival flap surgery and can be achieved in less surgical time and with less donor tissue to be removed.
Collapse
Affiliation(s)
- Emilio Pedrotti
- Ophthalmology Clinic, Department of Neurosciences, Biomedicine and Movement Sciences, University of Verona, P.le L.A. Scuro 1, 37134, Verona, Verona, Italy
| | - Marina Bertolin
- Research Unit, The Veneto Eye Bank Foundation (Fondazione Banca degli Occhi del Veneto), Pad. G. Rama, Via Paccagnella 11, 30174, Venezia, Italy
| | - Adriano Fasolo
- Ophthalmology Clinic, Department of Neurosciences, Biomedicine and Movement Sciences, University of Verona, P.le L.A. Scuro 1, 37134, Verona, Verona, Italy. .,Research Unit, The Veneto Eye Bank Foundation (Fondazione Banca degli Occhi del Veneto), Pad. G. Rama, Via Paccagnella 11, 30174, Venezia, Italy.
| | - Erika Bonacci
- Ophthalmology Clinic, Department of Neurosciences, Biomedicine and Movement Sciences, University of Verona, P.le L.A. Scuro 1, 37134, Verona, Verona, Italy
| | - Francesca Bosello
- Ophthalmology Clinic, Department of Neurosciences, Biomedicine and Movement Sciences, University of Verona, P.le L.A. Scuro 1, 37134, Verona, Verona, Italy
| | - Diego Ponzin
- Research Unit, The Veneto Eye Bank Foundation (Fondazione Banca degli Occhi del Veneto), Pad. G. Rama, Via Paccagnella 11, 30174, Venezia, Italy
| | - Giorgio Marchini
- Ophthalmology Clinic, Department of Neurosciences, Biomedicine and Movement Sciences, University of Verona, P.le L.A. Scuro 1, 37134, Verona, Verona, Italy
| |
Collapse
|