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Mizuno M, Maeda Y, Sanami S, Matsuzaki T, Yoshikawa HY, Ozeki N, Koga H, Sekiya I. Noninvasive total counting of cultured cells using a home-use scanner with a pattern sheet. iScience 2024; 27:109170. [PMID: 38405610 PMCID: PMC10884908 DOI: 10.1016/j.isci.2024.109170] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2023] [Revised: 11/07/2023] [Accepted: 02/06/2024] [Indexed: 02/27/2024] Open
Abstract
The inherent variability in cell culture techniques hinders their reproducibility. To address this issue, we introduce a comprehensive cell observation device. This new approach enhances the features of existing home-use scanners by implementing a pattern sheet. Compared with fluorescent staining, our method over- or underestimated the cell count by a mere 5%. The proposed technique showcased a strong correlation with conventional methodologies, displaying R2 values of 0.91 and 0.99 compared with the standard chamber and fluorescence methods, respectively. Simulations of microscopic observations indicated the potential to estimate accurately the total cell count using just 20 fields of view. Our proposed cell-counting device offers a straightforward, noninvasive means of measuring the number of cultured cells. By harnessing the power of deep learning, this device ensures data integrity, thereby making it an attractive option for future cell culture research.
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Affiliation(s)
- Mitsuru Mizuno
- Center for Stem Cell and Regenerative Medicine, Tokyo Medical and Dental University (TMDU), 1-5-45, Bunkyo-ku, Yushima, Tokyo 113-8519, Japan
| | - Yoshitaka Maeda
- Medical & Healthcare Division, Dai Nippon Printing Co., Ltd., Tokyo, Japan
| | - Sho Sanami
- Medical & Healthcare Division, Dai Nippon Printing Co., Ltd., Tokyo, Japan
| | - Takahisa Matsuzaki
- Department of Applied Physics, Graduate School of Engineering, Osaka University, 2-1, Yamadaoka, Suita City, Osaka 565-0871, Japan
| | - Hiroshi Y. Yoshikawa
- Department of Applied Physics, Graduate School of Engineering, Osaka University, 2-1, Yamadaoka, Suita City, Osaka 565-0871, Japan
| | - Nobutake Ozeki
- Center for Stem Cell and Regenerative Medicine, Tokyo Medical and Dental University (TMDU), 1-5-45, Bunkyo-ku, Yushima, Tokyo 113-8519, Japan
| | - Hideyuki Koga
- Department of Joint Surgery and Sports Medicine, Tokyo Medical and Dental University (TMDU), Tokyo, Japan
| | - Ichiro Sekiya
- Center for Stem Cell and Regenerative Medicine, Tokyo Medical and Dental University (TMDU), 1-5-45, Bunkyo-ku, Yushima, Tokyo 113-8519, Japan
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Mizuno M, Abe K, Kakimoto T, Hasebe H, Kagi N, Sekiya I. Operator-derived particles and falling bacteria in biosafety cabinets. Regen Ther 2024; 25:264-272. [PMID: 38304617 PMCID: PMC10831277 DOI: 10.1016/j.reth.2024.01.001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2023] [Revised: 12/14/2023] [Accepted: 01/08/2024] [Indexed: 02/03/2024] Open
Abstract
Introduction To ensure the sterility of cell products that cannot undergo conventional sterilization processes, it is imperative to establish and maintain a clean room environment, regulated through environmental monitoring, including particle counts. Nevertheless, the impact of particles generated by operators as potential contaminants remains uncertain. Thus, in this study, we conducted an accelerated test to assess the correlation between particles generated by operators and airborne bacteria, utilizing biosafety cabinets within a typical laboratory setting. These biosafety cabinets create a controlled environment with air conditioning and high-efficiency particulate air (HEPA) filters, offering fundamental data relevant to cell production. Materials and methods We conducted a simulation followed by real-time experiments involving human operations to explore the quantity of particles, particle sizes, and the percentage of bacteria within these particles. This investigation focused on conditions with heightened particle generation from operators within a biosafety cabinet. The experiment was conducted on operators wearing textile and non-woven dustless clothing within biosafety cabinets. It entailed tapping the upper arms for a duration of 2 min. Results Observations under biosafety cabinet-off conditions revealed the presence of various particles and falling bacteria in textile clothing. In contrast, no particles or falling bacteria were detected in operators wearing dustless clothing within biosafety cabinets. Notably, a correlation between 5 μm particles and colony-forming units in textile clothing was identified through this analysis. The ratio of falling bacteria to the total number of particles within the biosafety cabinet was 0.8 ± 0.5 % for textile clothing, while it was significantly lower at 0.04 ± 0.2 % for dustless clothing. Conclusion This study demonstrated that the number of particles and falling bacteria varied depending on the type of clothing and that quantitative data could be used to identify risks and provide basic data for operator education and evidence-based control methods in aseptic manufacturing areas. Although, this study aims to serve as an accelerated test operating under worst-case conditions, the results need to make sure the study range in general research.
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Affiliation(s)
- Mitsuru Mizuno
- Center for Stem Cell and Regenerative Medicine, Tokyo Medical and Dental University (TMDU), 1-5-45, Bunkyo-ku, Yushima, Tokyo 113-8519, Japan
| | - Koki Abe
- Energy Saving Technology Group, Center for Carbon Neutral Engineering, Institute of Technology, SHIMIZU CORPORATION, 3-4-17, Koto-ku, Etchūjima, Tokyo, 135-8530, Japan
| | - Takashi Kakimoto
- Planning & Public Relations Group, R&D Planning Department, Institute of Technology, SHIMIZU CORPORATION, 3-4-17, Koto-ku, Etchūjima, Tokyo, 135-0044, Japan
| | - Hisashi Hasebe
- Energy Saving Technology Group, Center for Carbon Neutral Engineering, Institute of Technology, SHIMIZU CORPORATION, 3-4-17, Koto-ku, Etchūjima, Tokyo, 135-8530, Japan
| | - Naoki Kagi
- Department of Architecture and Building Engineering, School of Environment and Society, Tokyo Institute of Technology, Ookayama 2-12-1, Meguro-ku, Tokyo, 152-8552, Japan
| | - Ichiro Sekiya
- Center for Stem Cell and Regenerative Medicine, Tokyo Medical and Dental University (TMDU), 1-5-45, Bunkyo-ku, Yushima, Tokyo 113-8519, Japan
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Effects of empagliflozin on progression of chronic kidney disease: a prespecified secondary analysis from the empa-kidney trial. Lancet Diabetes Endocrinol 2024; 12:39-50. [PMID: 38061371 PMCID: PMC7615591 DOI: 10.1016/s2213-8587(23)00321-2] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/05/2023] [Revised: 10/24/2023] [Accepted: 10/25/2023] [Indexed: 12/23/2023]
Abstract
BACKGROUND Sodium-glucose co-transporter-2 (SGLT2) inhibitors reduce progression of chronic kidney disease and the risk of cardiovascular morbidity and mortality in a wide range of patients. However, their effects on kidney disease progression in some patients with chronic kidney disease are unclear because few clinical kidney outcomes occurred among such patients in the completed trials. In particular, some guidelines stratify their level of recommendation about who should be treated with SGLT2 inhibitors based on diabetes status and albuminuria. We aimed to assess the effects of empagliflozin on progression of chronic kidney disease both overall and among specific types of participants in the EMPA-KIDNEY trial. METHODS EMPA-KIDNEY, a randomised, controlled, phase 3 trial, was conducted at 241 centres in eight countries (Canada, China, Germany, Italy, Japan, Malaysia, the UK, and the USA), and included individuals aged 18 years or older with an estimated glomerular filtration rate (eGFR) of 20 to less than 45 mL/min per 1·73 m2, or with an eGFR of 45 to less than 90 mL/min per 1·73 m2 with a urinary albumin-to-creatinine ratio (uACR) of 200 mg/g or higher. We explored the effects of 10 mg oral empagliflozin once daily versus placebo on the annualised rate of change in estimated glomerular filtration rate (eGFR slope), a tertiary outcome. We studied the acute slope (from randomisation to 2 months) and chronic slope (from 2 months onwards) separately, using shared parameter models to estimate the latter. Analyses were done in all randomly assigned participants by intention to treat. EMPA-KIDNEY is registered at ClinicalTrials.gov, NCT03594110. FINDINGS Between May 15, 2019, and April 16, 2021, 6609 participants were randomly assigned and then followed up for a median of 2·0 years (IQR 1·5-2·4). Prespecified subgroups of eGFR included 2282 (34·5%) participants with an eGFR of less than 30 mL/min per 1·73 m2, 2928 (44·3%) with an eGFR of 30 to less than 45 mL/min per 1·73 m2, and 1399 (21·2%) with an eGFR 45 mL/min per 1·73 m2 or higher. Prespecified subgroups of uACR included 1328 (20·1%) with a uACR of less than 30 mg/g, 1864 (28·2%) with a uACR of 30 to 300 mg/g, and 3417 (51·7%) with a uACR of more than 300 mg/g. Overall, allocation to empagliflozin caused an acute 2·12 mL/min per 1·73 m2 (95% CI 1·83-2·41) reduction in eGFR, equivalent to a 6% (5-6) dip in the first 2 months. After this, it halved the chronic slope from -2·75 to -1·37 mL/min per 1·73 m2 per year (relative difference 50%, 95% CI 42-58). The absolute and relative benefits of empagliflozin on the magnitude of the chronic slope varied significantly depending on diabetes status and baseline levels of eGFR and uACR. In particular, the absolute difference in chronic slopes was lower in patients with lower baseline uACR, but because this group progressed more slowly than those with higher uACR, this translated to a larger relative difference in chronic slopes in this group (86% [36-136] reduction in the chronic slope among those with baseline uACR <30 mg/g compared with a 29% [19-38] reduction for those with baseline uACR ≥2000 mg/g; ptrend<0·0001). INTERPRETATION Empagliflozin slowed the rate of progression of chronic kidney disease among all types of participant in the EMPA-KIDNEY trial, including those with little albuminuria. Albuminuria alone should not be used to determine whether to treat with an SGLT2 inhibitor. FUNDING Boehringer Ingelheim and Eli Lilly.
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Nakahara M, Nakamura J, Nakamura R, Nakamura T, Nakaoka M, Nakashima E, Nakata J, Nakata M, Nakatani S, Nakatsuka A, Nakayama Y, Nakhoul G, Nangaku M, Naverrete G, Navivala A, Nazeer I, Negrea L, Nethaji C, Newman E, Ng SYA, Ng TJ, Ngu LLS, Nimbkar T, Nishi H, Nishi M, Nishi S, Nishida Y, Nishiyama A, Niu J, Niu P, Nobili G, Nohara N, Nojima I, Nolan J, Nosseir H, Nozawa M, Nunn M, Nunokawa S, Oda M, Oe M, Oe Y, Ogane K, Ogawa W, Ogihara T, Oguchi G, Ohsugi M, Oishi K, Okada Y, Okajyo J, Okamoto S, Okamura K, Olufuwa O, Oluyombo R, Omata A, Omori Y, Ong LM, Ong YC, Onyema J, Oomatia A, Oommen A, Oremus R, Orimo Y, Ortalda V, Osaki Y, Osawa Y, Osmond Foster J, O'Sullivan A, Otani T, Othman N, Otomo S, O'Toole J, Owen L, Ozawa T, Padiyar A, Page N, Pajak S, Paliege A, Pandey A, Pandey R, Pariani H, Park J, Parrigon M, Passauer J, Patecki M, Patel M, Patel R, Patel T, Patel Z, Paul R, Paul R, Paulsen L, Pavone L, Peixoto A, Peji J, Peng BC, Peng K, Pennino L, Pereira E, Perez E, Pergola P, Pesce F, Pessolano G, Petchey W, Petr EJ, Pfab T, Phelan P, Phillips R, Phillips T, Phipps M, Piccinni G, Pickett T, Pickworth S, Piemontese M, Pinto D, Piper J, Plummer-Morgan J, Poehler D, Polese L, Poma V, Pontremoli R, Postal A, Pötz C, Power A, Pradhan N, Pradhan R, Preiss D, Preiss E, Preston K, Prib N, Price L, Provenzano C, Pugay C, Pulido R, Putz F, Qiao Y, Quartagno R, Quashie-Akponeware M, Rabara R, Rabasa-Lhoret R, Radhakrishnan D, Radley M, Raff R, Raguwaran S, Rahbari-Oskoui F, Rahman M, Rahmat K, Ramadoss S, Ramanaidu S, Ramasamy S, Ramli R, Ramli S, Ramsey T, Rankin A, Rashidi A, Raymond L, Razali WAFA, Read K, Reiner H, Reisler A, Reith C, Renner J, Rettenmaier B, Richmond L, Rijos D, Rivera R, Rivers V, Robinson H, Rocco M, Rodriguez-Bachiller I, Rodriquez R, Roesch C, Roesch J, Rogers J, Rohnstock M, Rolfsmeier S, Roman M, Romo A, Rosati A, Rosenberg S, Ross T, Rossello X, Roura M, Roussel M, Rovner S, Roy S, Rucker S, Rump L, Ruocco M, Ruse S, Russo F, Russo M, Ryder M, Sabarai A, Saccà C, Sachson R, Sadler E, Safiee NS, Sahani M, Saillant A, Saini J, Saito C, Saito S, Sakaguchi K, Sakai M, Salim H, Salviani C, Sammons E, Sampson A, Samson F, Sandercock P, Sanguila S, Santorelli G, Santoro D, Sarabu N, Saram T, Sardell R, Sasajima H, Sasaki T, Satko S, Sato A, Sato D, Sato H, Sato H, Sato J, Sato T, Sato Y, Satoh M, Sawada K, Schanz M, Scheidemantel F, Schemmelmann M, Schettler E, Schettler V, Schlieper GR, Schmidt C, Schmidt G, Schmidt U, Schmidt-Gurtler H, Schmude M, Schneider A, Schneider I, Schneider-Danwitz C, Schomig M, Schramm T, Schreiber A, Schricker S, Schroppel B, Schulte-Kemna L, Schulz E, Schumacher B, Schuster A, Schwab A, Scolari F, Scott A, Seeger W, Seeger W, Segal M, Seifert L, Seifert M, Sekiya M, Sellars R, Seman MR, Shah S, Shah S, Shainberg L, Shanmuganathan M, Shao F, Sharma K, Sharpe C, Sheikh-Ali M, Sheldon J, Shenton C, Shepherd A, Shepperd M, Sheridan R, Sheriff Z, Shibata Y, Shigehara T, Shikata K, Shimamura K, Shimano H, Shimizu Y, Shimoda H, Shin K, Shivashankar G, Shojima N, Silva R, Sim CSB, Simmons K, Sinha S, Sitter T, Sivanandam S, Skipper M, Sloan K, Sloan L, Smith R, Smyth J, Sobande T, Sobata M, Somalanka S, Song X, Sonntag F, Sood B, Sor SY, Soufer J, Sparks H, Spatoliatore G, Spinola T, Squyres S, Srivastava A, Stanfield J, Staplin N, Staylor K, Steele A, Steen O, Steffl D, Stegbauer J, Stellbrink C, Stellbrink E, Stevens W, Stevenson A, Stewart-Ray V, Stickley J, Stoffler D, Stratmann B, Streitenberger S, Strutz F, Stubbs J, Stumpf J, Suazo N, Suchinda P, Suckling R, Sudin A, Sugamori K, Sugawara H, Sugawara K, Sugimoto D, Sugiyama H, Sugiyama H, Sugiyama T, Sullivan M, Sumi M, Suresh N, Sutton D, Suzuki H, Suzuki R, Suzuki Y, Suzuki Y, Suzuki Y, Swanson E, Swift P, Syed S, Szerlip H, Taal M, Taddeo M, Tailor C, Tajima K, Takagi M, Takahashi K, Takahashi K, Takahashi M, Takahashi T, Takahira E, Takai T, Takaoka M, Takeoka J, Takesada A, Takezawa M, Talbot M, Taliercio J, Talsania T, Tamori Y, Tamura R, Tamura Y, Tan CHH, Tan EZZ, Tanabe A, Tanabe K, Tanaka A, Tanaka A, Tanaka N, Tang S, Tang Z, Tanigaki K, Tarlac M, Tatsuzawa A, Tay JF, Tay LL, Taylor J, Taylor K, Taylor K, Te A, Tenbusch L, Teng KS, Terakawa A, Terry J, Tham ZD, Tholl S, Thomas G, Thong KM, Tietjen D, Timadjer A, Tindall H, Tipper S, Tobin K, Toda N, Tokuyama A, Tolibas M, Tomita A, Tomita T, Tomlinson J, Tonks L, Topf J, Topping S, Torp A, Torres A, Totaro F, Toth P, Toyonaga Y, Tripodi F, Trivedi K, Tropman E, Tschope D, Tse J, Tsuji K, Tsunekawa S, Tsunoda R, Tucky B, Tufail S, Tuffaha A, Turan E, Turner H, Turner J, Turner M, Tuttle KR, Tye YL, Tyler A, Tyler J, Uchi H, Uchida H, Uchida T, Uchida T, Udagawa T, Ueda S, Ueda Y, Ueki K, Ugni S, Ugwu E, Umeno R, Unekawa C, Uozumi K, Urquia K, Valleteau A, Valletta C, van Erp R, Vanhoy C, Varad V, Varma R, Varughese A, Vasquez P, Vasseur A, Veelken R, Velagapudi C, Verdel K, Vettoretti S, Vezzoli G, Vielhauer V, Viera R, Vilar E, Villaruel S, Vinall L, Vinathan J, Visnjic M, Voigt E, von-Eynatten M, Vourvou M, Wada J, Wada J, Wada T, Wada Y, Wakayama K, Wakita Y, Wallendszus K, Walters T, Wan Mohamad WH, Wang L, Wang W, Wang X, Wang X, Wang Y, Wanner C, Wanninayake S, Watada H, Watanabe K, Watanabe K, Watanabe M, Waterfall H, Watkins D, Watson S, Weaving L, Weber B, Webley Y, Webster A, Webster M, Weetman M, Wei W, Weihprecht H, Weiland L, Weinmann-Menke J, Weinreich T, Wendt R, Weng Y, Whalen M, Whalley G, Wheatley R, Wheeler A, Wheeler J, Whelton P, White K, Whitmore B, Whittaker S, Wiebel J, Wiley J, Wilkinson L, Willett M, Williams A, Williams E, Williams K, Williams T, Wilson A, Wilson P, Wincott L, Wines E, Winkelmann B, Winkler M, Winter-Goodwin B, Witczak J, Wittes J, Wittmann M, Wolf G, Wolf L, Wolfling R, Wong C, Wong E, Wong HS, Wong LW, Wong YH, Wonnacott A, Wood A, Wood L, Woodhouse H, Wooding N, Woodman A, Wren K, Wu J, Wu P, Xia S, Xiao H, Xiao X, Xie Y, Xu C, Xu Y, Xue H, Yahaya H, Yalamanchili H, Yamada A, Yamada N, Yamagata K, Yamaguchi M, Yamaji Y, Yamamoto A, Yamamoto S, Yamamoto S, Yamamoto T, Yamanaka A, Yamano T, Yamanouchi Y, Yamasaki N, Yamasaki Y, Yamasaki Y, Yamashita C, Yamauchi T, Yan Q, Yanagisawa E, Yang F, Yang L, Yano S, Yao S, Yao Y, Yarlagadda S, Yasuda Y, Yiu V, Yokoyama T, Yoshida S, Yoshidome E, Yoshikawa H, Young A, Young T, Yousif V, Yu H, Yu Y, Yuasa K, Yusof N, Zalunardo N, Zander B, Zani R, Zappulo F, Zayed M, Zemann B, Zettergren P, Zhang H, Zhang L, Zhang L, Zhang N, Zhang X, Zhao J, Zhao L, Zhao S, Zhao Z, Zhong H, Zhou N, Zhou S, Zhu D, Zhu L, Zhu S, Zietz M, Zippo M, Zirino F, Zulkipli FH. Impact of primary kidney disease on the effects of empagliflozin in patients with chronic kidney disease: secondary analyses of the EMPA-KIDNEY trial. Lancet Diabetes Endocrinol 2024; 12:51-60. [PMID: 38061372 DOI: 10.1016/s2213-8587(23)00322-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/05/2023] [Revised: 10/24/2023] [Accepted: 10/25/2023] [Indexed: 12/23/2023]
Abstract
BACKGROUND The EMPA-KIDNEY trial showed that empagliflozin reduced the risk of the primary composite outcome of kidney disease progression or cardiovascular death in patients with chronic kidney disease mainly through slowing progression. We aimed to assess how effects of empagliflozin might differ by primary kidney disease across its broad population. METHODS EMPA-KIDNEY, a randomised, controlled, phase 3 trial, was conducted at 241 centres in eight countries (Canada, China, Germany, Italy, Japan, Malaysia, the UK, and the USA). Patients were eligible if their estimated glomerular filtration rate (eGFR) was 20 to less than 45 mL/min per 1·73 m2, or 45 to less than 90 mL/min per 1·73 m2 with a urinary albumin-to-creatinine ratio (uACR) of 200 mg/g or higher at screening. They were randomly assigned (1:1) to 10 mg oral empagliflozin once daily or matching placebo. Effects on kidney disease progression (defined as a sustained ≥40% eGFR decline from randomisation, end-stage kidney disease, a sustained eGFR below 10 mL/min per 1·73 m2, or death from kidney failure) were assessed using prespecified Cox models, and eGFR slope analyses used shared parameter models. Subgroup comparisons were performed by including relevant interaction terms in models. EMPA-KIDNEY is registered with ClinicalTrials.gov, NCT03594110. FINDINGS Between May 15, 2019, and April 16, 2021, 6609 participants were randomly assigned and followed up for a median of 2·0 years (IQR 1·5-2·4). Prespecified subgroupings by primary kidney disease included 2057 (31·1%) participants with diabetic kidney disease, 1669 (25·3%) with glomerular disease, 1445 (21·9%) with hypertensive or renovascular disease, and 1438 (21·8%) with other or unknown causes. Kidney disease progression occurred in 384 (11·6%) of 3304 patients in the empagliflozin group and 504 (15·2%) of 3305 patients in the placebo group (hazard ratio 0·71 [95% CI 0·62-0·81]), with no evidence that the relative effect size varied significantly by primary kidney disease (pheterogeneity=0·62). The between-group difference in chronic eGFR slopes (ie, from 2 months to final follow-up) was 1·37 mL/min per 1·73 m2 per year (95% CI 1·16-1·59), representing a 50% (42-58) reduction in the rate of chronic eGFR decline. This relative effect of empagliflozin on chronic eGFR slope was similar in analyses by different primary kidney diseases, including in explorations by type of glomerular disease and diabetes (p values for heterogeneity all >0·1). INTERPRETATION In a broad range of patients with chronic kidney disease at risk of progression, including a wide range of non-diabetic causes of chronic kidney disease, empagliflozin reduced risk of kidney disease progression. Relative effect sizes were broadly similar irrespective of the cause of primary kidney disease, suggesting that SGLT2 inhibitors should be part of a standard of care to minimise risk of kidney failure in chronic kidney disease. FUNDING Boehringer Ingelheim, Eli Lilly, and UK Medical Research Council.
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Mizuno M, Abe K, Kakimoto T, Yano K, Ota Y, Tomita K, Kagi N, Sekiya I. Volatile organic compounds and ionic substances contamination in cell processing facilities during rest period; a preliminary assessment of exposure to cell processing operators. Regen Ther 2023; 24:211-218. [PMID: 37519908 PMCID: PMC10371781 DOI: 10.1016/j.reth.2023.07.002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2023] [Revised: 06/19/2023] [Accepted: 07/06/2023] [Indexed: 08/01/2023] Open
Abstract
Introduction Cell processing operators (CPOs) use a variety of disinfectants that vaporize in the workspace environment. These disinfectants can induce allergic reactions in CPOs, due to their long working hours at cell processing facilities (CPFs). Ionic substances such as CH3COO- generated from peracetic acid, nitrogen oxides (NOx) and sulfur oxides (SOx) from outdoor environment are also known to pollute air. Therefore, our objective was to assess the air quality in CPFs and detect volatile organic compounds (VOCs) from disinfectants and building materials, and airborne ionic substances from outdoor air. Methods Sampling was conducted at three CPFs: two located in medical institutions and one located at a different institution. Air samples were collected using a flow pump. Ion chromatographic analysis of the anionic and cationic compounds was performed. For VOC analysis, a thermal desorption analyzer coupled with capillary gas chromatograph and flame ionization detector was used. Results Analysis of the ionic substances showed that Cl-, NOx, and SOx, which were detected in large amounts in the outdoor air, were relatively less in the CPFs. Ethanol was detected as the main component in the VOC analysis. Toluene was detected at all sampling points. As compared to the other environments, air in the incubator contained larger amounts of VOCs, that included siloxane, tetradecane, and aromatics. Conclusions No VOCs or ionic substances of immediate concern to the health of the CPOs were detected during the non-operating period. However, new clinical trials of cell products are currently underway in Japan, and a variety of new cell products are expected to be approved. With an increase in cell processing, health risks to CPOs that have not been considered previously, may become apparent. We should continue to prepare for the future expansion of the industry using a scientific approach to collect various pieces of information and make it publicly available to build a database.
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Affiliation(s)
- Mitsuru Mizuno
- Center for Stem Cell and Regenerative Medicine, Tokyo Medical and Dental University (TMDU), 1-5-45, Bunkyo-ku, Yushima, Tokyo 113-8519, Japan
| | - Koki Abe
- Medical Environment Engineering Group, Center for Environmental Engineering, Institute of Technology, Shimizu Corporation, 3-4-17, Koto-ku, Etchūjima, Tokyo, 135-0044, Japan
| | - Takashi Kakimoto
- Medical Environment Engineering Group, Center for Environmental Engineering, Institute of Technology, Shimizu Corporation, 3-4-17, Koto-ku, Etchūjima, Tokyo, 135-0044, Japan
| | - Keiichi Yano
- Medical Environment Engineering Group, Center for Environmental Engineering, Institute of Technology, Shimizu Corporation, 3-4-17, Koto-ku, Etchūjima, Tokyo, 135-0044, Japan
| | - Yukiko Ota
- Medical Environment Engineering Group, Center for Environmental Engineering, Institute of Technology, Shimizu Corporation, 3-4-17, Koto-ku, Etchūjima, Tokyo, 135-0044, Japan
| | - Kengo Tomita
- Medical Environment Engineering Group, Center for Environmental Engineering, Institute of Technology, Shimizu Corporation, 3-4-17, Koto-ku, Etchūjima, Tokyo, 135-0044, Japan
| | - Naoki Kagi
- Department of Architecture and Building Engineering, School of Environment and Society, Tokyo Institute of Technology, Ookayama 2-12-1, Meguro-ku, Tokyo, 152-8552, Japan
| | - Ichiro Sekiya
- Center for Stem Cell and Regenerative Medicine, Tokyo Medical and Dental University (TMDU), 1-5-45, Bunkyo-ku, Yushima, Tokyo 113-8519, Japan
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Katano H, Ozeki N, Mizuno M, Endo K, Okanouchi N, Fujita J, Masumoto J, Koga H, Sekiya I. Morphological analysis of three-dimensional MR images of patellofemoral joints in asymptomatic subjects. Sci Rep 2023; 13:16750. [PMID: 37798323 PMCID: PMC10555988 DOI: 10.1038/s41598-023-42404-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2022] [Accepted: 09/09/2023] [Indexed: 10/07/2023] Open
Abstract
The existing methods for analyzing patellofemoral (PF) osteoarthritis (OA) are limited. Our purpose was to clarify the frequency, localization, and morphological progression of PFOA by observing three-dimensional (3D) magnetic resonance (MR) images from a cohort population. The subjects were 561 patients aged 30-79 years from the Kanagawa Knee Study who had not visited a hospital for more than three consecutive months for knee symptoms. MR images of the PF joints, separated into the medial and lateral types, were presented in order of the highest to lowest patella cartilage area ratios. Cartilage defects in the patella were detected in 37 subjects (6.6%). Medial lesions (4.6%) were significantly more frequent than lateral lesions (2.0%) (p < 0.01). For both medial and lateral lesions, the patellar cartilage defects were divided into confined and unconfined types. The 3D MR images of the PF joint showed that the patellar cartilage defect occurred along each ridge of the femoral trochlea. The 3D MR images revealed a 6.6% prevalence of patellar cartilage defects, higher in the medial than lateral regions. The 3D MR images can easily determine PF morphology and cartilage defect location, making them useful in understanding the pathophysiology and etiology of PFOA.
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Affiliation(s)
- Hisako Katano
- Center for Stem Cell and Regenerative Medicine, Tokyo Medical and Dental University (TMDU), 1-5-45 Yushima, Bunkyo-ku, Tokyo, 113-8510, Japan
| | - Nobutake Ozeki
- Center for Stem Cell and Regenerative Medicine, Tokyo Medical and Dental University (TMDU), 1-5-45 Yushima, Bunkyo-ku, Tokyo, 113-8510, Japan
| | - Mitsuru Mizuno
- Center for Stem Cell and Regenerative Medicine, Tokyo Medical and Dental University (TMDU), 1-5-45 Yushima, Bunkyo-ku, Tokyo, 113-8510, Japan
| | - Kentaro Endo
- Center for Stem Cell and Regenerative Medicine, Tokyo Medical and Dental University (TMDU), 1-5-45 Yushima, Bunkyo-ku, Tokyo, 113-8510, Japan
| | - Noriya Okanouchi
- Center for Stem Cell and Regenerative Medicine, Tokyo Medical and Dental University (TMDU), 1-5-45 Yushima, Bunkyo-ku, Tokyo, 113-8510, Japan
- Kanagawa Institute of Industrial Science and Technology, 3-2-1 Sakado, Takatsu-Ku, Kawasaki, Kanagawa, Japan
| | - Jo Fujita
- Fujifilm Corporation, 26-30, Nishiazabu 2-Chome, Minato-ku, Tokyo, Japan
| | - Jun Masumoto
- Fujifilm Corporation, 26-30, Nishiazabu 2-Chome, Minato-ku, Tokyo, Japan
| | - Hideyuki Koga
- Department of Joint Surgery and Sports Medicine, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University (TMDU), 1-5-45 Yushima, Bunkyo-ku, Tokyo, Japan
| | - Ichiro Sekiya
- Center for Stem Cell and Regenerative Medicine, Tokyo Medical and Dental University (TMDU), 1-5-45 Yushima, Bunkyo-ku, Tokyo, 113-8510, Japan.
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Ozeki N, Mizuno M, Yanada S, Okada T, Kubota R, Kushida Y, Furuoka H, Endo K, Katano H, Nakamura K, Ohya S, Koga H, Sekiya I. Autologous Synovial Mesenchymal Stem Cell Transplantation Suppresses Inflammation Caused by Synovial Harvesting and Promotes Healing in a Micro Minipig Repaired Meniscus Model. Transplant Proc 2023; 55:470-480. [PMID: 36906438 DOI: 10.1016/j.transproceed.2023.01.012] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2022] [Accepted: 01/05/2023] [Indexed: 03/12/2023]
Abstract
PURPOSE Allogeneic synovial mesenchymal stem cells (MSCs) effectively promote meniscus healing in micro minipigs. We investigated the effect of autologous synovial MSC transplantation on meniscus healing in a micro minipig model of meniscus repair showing synovitis after synovial harvesting. MATERIALS AND METHODS Synovium was harvested from the left knee of the micro minipigs after arthrotomy and used to prepare synovial MSCs. The left medial meniscus in the avascular region was injured, repaired, and transplanted with synovial MSCs. First, synovitis was compared after 6 weeks in knees with and without synovial harvesting. Second, the repaired meniscus was compared for the autologous MSC group and the control group (in which synovium was harvested but MSCs were not transplanted) 4 weeks after transplantation. RESULTS Synovitis was more severe in knees subjected to synovium harvesting than in knees not subjected to harvesting. Menisci treated with autologous MSCs showed no red granulation at the tear of the meniscus, but menisci not treated with MSCS showed red granulation. Macroscopic scores, inflammatory cell infiltration scores, and matrix scores assessed by toluidine blue staining were all significantly better in the autologous MSC group than in the control group without MSCs (n = 6). CONCLUSION Autologous synovial MSC transplantation suppressed the inflammation caused by synovial harvesting in micro minipigs and promoted healing of the repaired meniscus.
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Affiliation(s)
- Nobutake Ozeki
- Center for Stem Cell and Regenerative Medicine, Tokyo Medical and Dental University, Tokyo, Japan
| | - Mitsuru Mizuno
- Center for Stem Cell and Regenerative Medicine, Tokyo Medical and Dental University, Tokyo, Japan
| | | | - Takuya Okada
- Japan Tissue Engineering Co., Ltd., Aichi, Japan
| | - Rei Kubota
- Center for Stem Cell and Regenerative Medicine, Tokyo Medical and Dental University, Tokyo, Japan
| | - Yoshihisa Kushida
- Center for Stem Cell and Regenerative Medicine, Tokyo Medical and Dental University, Tokyo, Japan
| | - Hideto Furuoka
- Center for Stem Cell and Regenerative Medicine, Tokyo Medical and Dental University, Tokyo, Japan
| | - Kentaro Endo
- Center for Stem Cell and Regenerative Medicine, Tokyo Medical and Dental University, Tokyo, Japan
| | - Hisako Katano
- Center for Stem Cell and Regenerative Medicine, Tokyo Medical and Dental University, Tokyo, Japan
| | | | | | - Hideyuki Koga
- Department of Joint Surgery and Sports Medicine, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, Tokyo, Japan
| | - Ichiro Sekiya
- Center for Stem Cell and Regenerative Medicine, Tokyo Medical and Dental University, Tokyo, Japan.
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Mizuno M, Matsuda J, Watanabe K, Shimizu N, Sekiya I. Effect of disinfectants and manual wiping for processing the cell product changeover in a biosafety cabinet. Regen Ther 2023; 22:169-175. [PMID: 36843961 PMCID: PMC9945742 DOI: 10.1016/j.reth.2023.01.009] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2022] [Revised: 01/12/2023] [Accepted: 01/26/2023] [Indexed: 02/11/2023] Open
Abstract
Introduction The process of cell product changeover poses a high risk of cross-contamination. Hence, it is essential to minimize cross-contamination while processing cell products. Following its use, the surface of a biosafety cabinet is commonly disinfected by ethanol spray and manual wiping methods. However, the effectiveness of this protocol and the optimal disinfectant have not yet been evaluated. Here, we assessed the effect of various disinfectants and manual wiping methods on bacterial removal during cell processing. Methods The hard surface carrier test was performed to evaluate the disinfectant efficacy of benzalkonium chloride with a corrosion inhibitor (BKC + I), ethanol (ETH), peracetic acid (PAA), and wiping against Bacillus subtilis endospores. Distilled water (DW) was used as the control. A pressure sensor was employed to investigate the differences in loading under dry and wet conditions. The pre-spray for wiping was monitored by eight operators using a paper that turns black when wet. Chemical properties, including residual floating proteins, and mechanical properties, such as viscosity and coefficient of friction, were examined. Results In total, 2.02 ± 0.21-Log and 3.00 ± 0.46-Log reductions from 6-Log CFU of B. subtilis endospores were observed for BKC + I and PAA, respectively, following treatment for 5 min. Meanwhile, wiping resulted in a 0.70 ± 0.12-Log reduction under dry conditions. Under wet conditions, DW and BKC + I showed 3.20 ± 0.17-Log and 3.92 ± 0.46-Log reductions, whereas ETH caused a 1.59 ± 0.26-Log reduction. Analysis of the pressure sensor suggested that the force was not transmitted under dry conditions. Evaluation of the amount of spray by eight operators showed differences and bias in the spraying area. While ETH had the lowest ratio in the protein floating and collection assays, it exhibited the highest viscosity. BKC + I had the highest friction coefficient under 4.0-6.3 mm/s; however, that of BKC + I decreased and became similar to the friction coefficient of ETH under 39.8-63.1 mm/s. Conclusions DW and BKC + I are effective for inducing a 3-Log reduction in bacterial abundance. Moreover, the combination of optimal wet conditions and disinfectants is essential for effective wiping in specific environments containing high-protein human sera and tissues. Given that some raw materials processed in cell products contain high protein levels, our findings suggest that a complete changeover of biosafety cabinets is necessary in terms of both cleaning and disinfection.
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Mizuno M, Yori K, Takeuchi T, Yamaguchi T, Watanabe K, Tomaru Y, Shimizu N, Sekiya I. Cross-contamination risk and decontamination during changeover after cell-product processing. Regen Ther 2022; 22:30-38. [PMID: 36618490 PMCID: PMC9800260 DOI: 10.1016/j.reth.2022.12.003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2022] [Revised: 11/24/2022] [Accepted: 12/06/2022] [Indexed: 12/24/2022] Open
Abstract
Introduction During changeover in cell-product processing, it is essential to minimize cross-contamination risks. These risks differ depending on the patient from whom the cells were derived. Human error during manual cell-product processing increases the contamination risk in biosafety cabinets. Here, we evaluate the risk of cross-contamination during manual cell-processing to develop an evidence-based changeover method for biosafety cabinets. Methods Contaminant coverage was analyzed during simulated medium preparation, cell seeding, and waste liquid decanting by seven operators, classified by skill. Environmental bacteria were surveyed at four participating facilities. Finally, we assessed the effect of conventional UV irradiation in biosafety cabinets on bacteria and fungi that pose a cross-contamination risk. Results Under simulated conditions, scattered contamination occurred via droplets falling onto the surface from heights of 30 cm, and from bubbles rupturing at this height. Visible traces of contaminants were distributed up to 50 cm from the point of droplet impact, or from the location of the pipette tip when the bubble ruptured. In several facilities, we detected Bacillus subtilis, of which the associated endospores are highly resistant to disinfection. Irradiation at 50 mJ/cm2 effectively eliminated Bacillus subtilis vegetative cells and Aspergillus brasiliensis, which is highly resistant to UV. Bacillus subtilis endospores were eliminated at 100 mJ/cm2. Conclusions Under these simulated optimal conditions, UV irradiation successfully prevents cross-contamination. Therefore, following cell-product processing, monitoring the UV dose in the biosafety cabinet during cell changeover represents a promising method for reducing cross-contamination.
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Affiliation(s)
- Mitsuru Mizuno
- Center for Stem Cell and Regenerative Medicine, Tokyo Medical and Dental University (TMDU), 1-5-45, Bunkyo-ku, Yushima, Tokyo 113-8519, Japan,Corresponding author. Fax: +81-3-5803-0192.
| | - Kouichirou Yori
- Department of HeartSheet Business, Terumo Corporation, 1500 Inokuchi, Nakaicho, Ashigarakamigun, Kanagawa 259-0151, Japan
| | - Toshikazu Takeuchi
- Department of HeartSheet Business, Terumo Corporation, 1500 Inokuchi, Nakaicho, Ashigarakamigun, Kanagawa 259-0151, Japan
| | - Tetsuya Yamaguchi
- Department of HeartSheet Business, Terumo Corporation, 1500 Inokuchi, Nakaicho, Ashigarakamigun, Kanagawa 259-0151, Japan
| | - Ken Watanabe
- Center for Stem Cell and Regenerative Medicine, Tokyo Medical and Dental University (TMDU), 1-5-45, Bunkyo-ku, Yushima, Tokyo 113-8519, Japan
| | - Yasuhiro Tomaru
- Center for Stem Cell and Regenerative Medicine, Tokyo Medical and Dental University (TMDU), 1-5-45, Bunkyo-ku, Yushima, Tokyo 113-8519, Japan
| | - Norio Shimizu
- Center for Stem Cell and Regenerative Medicine, Tokyo Medical and Dental University (TMDU), 1-5-45, Bunkyo-ku, Yushima, Tokyo 113-8519, Japan
| | - Ichiro Sekiya
- Center for Stem Cell and Regenerative Medicine, Tokyo Medical and Dental University (TMDU), 1-5-45, Bunkyo-ku, Yushima, Tokyo 113-8519, Japan
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10
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Fujii S, Endo K, Ozeki N, Sakamaki Y, Kohno Y, Mizuno M, Katano H, Tsuji K, Koga H, Sekiya I. Comparison of adhesion of thawed and cultured synovial mesenchymal stem cells to the porcine meniscus and the relevance of cell surface microspikes. BMC Mol Cell Biol 2022; 23:53. [PMID: 36503422 PMCID: PMC9743635 DOI: 10.1186/s12860-022-00456-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2021] [Accepted: 11/26/2022] [Indexed: 12/14/2022] Open
Abstract
BACKGROUND Placement of a cultured synovial mesenchymal stem cell (MSC) suspension on a repaired meniscus for 10 min accelerated meniscus repair. Upon placement of the MSC suspension on the meniscus, microspikes projecting from the MSC surface trap meniscus fibers and promote MSC adhesion. Thawed cryopreserved MSCs are preferred materials for meniscus repair, as they can be transplanted without additional culture. However, the adhesion ability of thawed cryopreserved MSCs is unknown. Here, we compared the proportion of cultured versus thawed MSCs adhering to a porcine meniscus immediately and 10 min after placement. We also investigated the relationship between adhesion and the number of microspikes on the synovial MSCs. METHODS Synovial MSCs were prepared from the knees of four donors with osteoarthritis. The "cultured MSCs" were thawed MSCs that were re-cultured and suspended in PBS for transplantation. A similarly prepared suspension was cryopreserved, thawed again, suspended in PBS, and used without further culture as the "thawed MSCs." MSCs with at least three microspikes in SEM images were defined as microspike-positive MSCs. Porcine meniscus surfaces were abraded, cut into a cylindrical shape, and treated with MSC suspension. Non-adherent cells were counted immediately and again 10 min after placement to calculate the adhesion proportion. RESULTS The proportion of microspike-positive MSCs was significantly higher in thawed (53 ± 3%) than in cultured (28 ± 5%) MSC suspensions. MSC adhesion to the meniscus was significantly better for the thawed than for the cultured MSC suspensions immediately after placement on the meniscus, but no differences were detected after 10 min. The proportion of MSCs with microspikes in the cell suspension was significantly correlated with the proportion of adhered MSCs immediately after the placement, but not 10 min later. Addition of FBS to the cryopreservation medium promoted a concentration-dependent increase in the proportion of microspike-positive cells. CONCLUSIONS Thawed MSCs adhered better than cultured MSCs immediately after placement, but adhesion was similar for both MSC preparations after 10 min. Immediately after placement, the presence of microspikes was associated with better adhesion of synovial MSCs to the meniscus.
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Affiliation(s)
- Shunichi Fujii
- grid.265073.50000 0001 1014 9130Center for Stem Cell and Regenerative Medicine, Tokyo Medical and Dental University (TMDU), 1-5-45 Yushima, Bunkyo-ku, Tokyo, 113-8510 Japan
| | - Kentaro Endo
- grid.265073.50000 0001 1014 9130Center for Stem Cell and Regenerative Medicine, Tokyo Medical and Dental University (TMDU), 1-5-45 Yushima, Bunkyo-ku, Tokyo, 113-8510 Japan
| | - Nobutake Ozeki
- grid.265073.50000 0001 1014 9130Center for Stem Cell and Regenerative Medicine, Tokyo Medical and Dental University (TMDU), 1-5-45 Yushima, Bunkyo-ku, Tokyo, 113-8510 Japan
| | - Yuriko Sakamaki
- grid.265073.50000 0001 1014 9130Research Core, Tokyo Medical and Dental University (TMDU), Tokyo, Japan
| | - Yuji Kohno
- grid.265073.50000 0001 1014 9130Center for Stem Cell and Regenerative Medicine, Tokyo Medical and Dental University (TMDU), 1-5-45 Yushima, Bunkyo-ku, Tokyo, 113-8510 Japan
| | - Mitsuru Mizuno
- grid.265073.50000 0001 1014 9130Center for Stem Cell and Regenerative Medicine, Tokyo Medical and Dental University (TMDU), 1-5-45 Yushima, Bunkyo-ku, Tokyo, 113-8510 Japan
| | - Hisako Katano
- grid.265073.50000 0001 1014 9130Center for Stem Cell and Regenerative Medicine, Tokyo Medical and Dental University (TMDU), 1-5-45 Yushima, Bunkyo-ku, Tokyo, 113-8510 Japan
| | - Kunikazu Tsuji
- grid.265073.50000 0001 1014 9130Department of Cartilage Regeneration, Tokyo Medical and Dental University (TMDU), Tokyo, Japan
| | - Hideyuki Koga
- grid.265073.50000 0001 1014 9130Department of Joint Surgery and Sports Medicine, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University (TMDU), Tokyo, Japan
| | - Ichiro Sekiya
- grid.265073.50000 0001 1014 9130Center for Stem Cell and Regenerative Medicine, Tokyo Medical and Dental University (TMDU), 1-5-45 Yushima, Bunkyo-ku, Tokyo, 113-8510 Japan
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11
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Mizuno M, Sugahara Y, Iwayama D, Miyashita N, Katano H, Sekiya I. Stress and motivation of cell processing operators: A pilot study of an online questionnaire survey. Regen Ther 2022; 21:547-552. [DOI: 10.1016/j.reth.2022.10.004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2022] [Accepted: 10/15/2022] [Indexed: 11/06/2022] Open
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12
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Mizuno M, Ozeki N, Sekiya I. Safety of using cultured cells with trisomy 7 in cell therapy for treating osteoarthritis. Regen Ther 2022; 21:81-86. [PMID: 35785042 PMCID: PMC9234008 DOI: 10.1016/j.reth.2022.06.003] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2022] [Revised: 04/25/2022] [Accepted: 06/01/2022] [Indexed: 12/27/2022] Open
Abstract
Cell therapy is a promising alternative treatment approach currently under study for osteoarthritis (OA), the most common chronic musculoskeletal disease. However, the mesenchymal stem cells (MSCs) used in cell therapy to treat OA are usually expanded in vitro to obtain sufficient numbers for transplantation, and their safety has not been fully assessed from multiple perspectives. Analysis of karyotypic abnormalities, in particular, is important to ensure the safety of cells; however, chromosomal mutations may also occur during the cell-expansion process. In addition, there have been many reports showing chromosome abnormalities, mainly trisomy 7, in the cartilage and synovium of patients with OA as well as in normal tissues. The suitability of cells with these karyotypic abnormalities as cells for cell therapy has not been evaluated. Recently, we assessed the safety of using cells with trisomy 7 from the osteoarthritic joint of a patient for transplantation, and we followed up with the patient for 5 years. This study showed analysis for copy number variant and whole-genome sequencing, compared with blood DNA from the same patient. We did not find any abnormalities in the genes regardless of trisomy 7. No side effects were observed for at least 5 years in the human clinical study. This suggests that the transplantation of cultured cells with trisomy 7 isolated from an osteoarthritic joint and transplanted into the osteoarthritic joints of the same person is not expected to cause serious adverse events. However, it is unclear what problems may arise in the case of allogeneic transplantation. Different types of risks will also exist depending on other transplantation routes, such as localization to the knee-joint only or circulation inflow and lung entrapment. In addition, since the cause of trisomy 7 occurrence remains unclear, it is necessary to clarify the mechanism of trisomy 7 in OA to perform cell therapy for OA patients in a safe manner. Trisomy 7 is frequently observed in the cartilage and synovium of patients with OA. MSCs with trisomy 7 did not form tumor after transplantation into mice. No side effects were observed 5 years after transplantation of MSCs with trisomy 7.
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Affiliation(s)
- Mitsuru Mizuno
- Corresponding author. Center for Stem Cell and Regenerative Medicine, Tokyo Medical and Dental University,1-5-45 Yushima, Bunkyo-ku, Tokyo 113-8510, Japan. Fax: +81 3 5803-0192.
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Sekiya I, Koga H, Katano H, Mizuno M, Kohno Y, Otabe K, Ozeki N. Second-look arthroscopy after meniscus repair and synovial mesenchymal stem cell transplantation to treat degenerative flaps and radial tears of the medial meniscus: A case report. J Orthop Sci 2022; 27:821-834. [PMID: 34120825 DOI: 10.1016/j.jos.2021.04.015] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/26/2020] [Revised: 04/01/2021] [Accepted: 04/26/2021] [Indexed: 10/21/2022]
Abstract
BACKGROUND The purpose of this study was to compare arthroscopic findings of a degenerative flap and radial tear of the medial meniscus (MM) before and one year after treatment by meniscus repair and synovial mesenchymal stem cell (MSC) transplantation. METHODS Patients with a degenerative flap and radial MM tear that would generally be treated by meniscectomy were included. The patients ranged in age from 45 to 62 years and all underwent meniscus repair and synovium harvest at time 0. The digested synovium was cultured with autologous serum for 12 days, and an average of 4 × 107 MSCs were transplanted at two weeks. A second-look arthroscopy was performed at 52 weeks (n = 6). The average duration of symptoms was 24 months. For flap tears, arthroscopic findings were quantified in terms of the presence, stability, and smoothness of the meniscus at each zone and area. The Lysholm score was evaluated throughout the 52 week follow-up. RESULTS Four patients with MM flap tears showed deficiencies in the central area at the posterior junctional zone before treatment, but this zone was completely restored to a stable and smooth condition in two patients and partially restored in the other two patients. The arthroscopy score for a flap tear at the central area of the posterior junctional zone was 0.3 ± 0.5 before treatment and 4.3 ± 2.1 after treatment. The score was significantly higher after treatment (p < 0.05, n = 4). The original radial MM tears in two patients were healed one year after treatment. Lysholm scores were significantly higher at 4 and 52 weeks after treatment than before treatment (n = 6). CONCLUSIONS Arthroscopic findings for a degenerative flap and radial tear of the MM were improved at the central area of the posterior junctional zone one year after meniscus repair and MSC transplantation.
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Affiliation(s)
- Ichiro Sekiya
- Center for Stem Cells and Regenerative Medicine, Tokyo Medical and Dental University, Japan.
| | - Hideyuki Koga
- Department of Joint Surgery and Sports Medicine, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, Japan
| | - Hisako Katano
- Center for Stem Cells and Regenerative Medicine, Tokyo Medical and Dental University, Japan
| | - Mitsuru Mizuno
- Center for Stem Cells and Regenerative Medicine, Tokyo Medical and Dental University, Japan
| | - Yuji Kohno
- Center for Stem Cells and Regenerative Medicine, Tokyo Medical and Dental University, Japan
| | - Koji Otabe
- Center for Stem Cells and Regenerative Medicine, Tokyo Medical and Dental University, Japan
| | - Nobutake Ozeki
- Center for Stem Cells and Regenerative Medicine, Tokyo Medical and Dental University, Japan
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14
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Mizuno M, Matsuzaki T, Ozeki N, Katano H, Koga H, Takebe T, Yoshikawa HY, Sekiya I. Cell membrane fluidity and ROS resistance define DMSO tolerance of cryopreserved synovial MSCs and HUVECs. Stem Cell Res Ther 2022; 13:177. [PMID: 35505370 PMCID: PMC9066911 DOI: 10.1186/s13287-022-02850-y] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2021] [Accepted: 03/21/2022] [Indexed: 01/12/2023] Open
Abstract
Objectives Synovial mesenchymal stem cells (MSCs) have high freeze–thaw tolerance, whereas human umbilical vein endothelial cells (HUVECs) have low freezing tolerance. The differences in cell type-specific freeze–thaw tolerance and the mechanisms involved are unclear. This study thus aimed to identify the biological and physical factors involved in the differences in freeze–thaw tolerance between MSCs and HUVECs. Materials and methods For biological analysis, MSC and HUVEC viability after freeze-thawing and alteration of gene expression in response to dimethyl sulfoxide (DMSO, a cryoprotectant) were quantitatively evaluated. For physical analysis, the cell membrane fluidity of MSCs and HUVECs before and after DMSO addition was assessed using a histogram for generalized polarization frequency. Results HUVECs showed lower live cell rates and higher gene expression alteration related to extracellular vesicles in response to DMSO than MSCs. Fluidity measurements revealed that the HUVEC membrane was highly fluidic and sensitive to DMSO compared to that of MSCs. Addition of CAY10566, an inhibitor of stearoyl-coA desaturase (SCD1) that produces highly fluidic desaturated fatty acids, decreased the fluidity of HUVECs and increased their tolerance to DMSO. The combination of CAY10566 and antioxidant glutathione (GSH) treatment improved HUVEC viability from 57 to 69%. Membrane fluidity alteration may thus contribute to pore-induced DMSO influx into the cytoplasm and reactive oxygen species production, leading to greater cytotoxicity in HUVECs, which have low antioxidant capacity. Conclusions Differences in freeze–thaw tolerance originate from differences in the cell membranes with respect to fluidity and antioxidant capacity. These findings provide a basis for analyzing cell biology and membrane-physics to establish appropriate long-term preservation methods aimed at promoting transplantation therapies. Supplementary Information The online version contains supplementary material available at 10.1186/s13287-022-02850-y.
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Affiliation(s)
- Mitsuru Mizuno
- Center for Stem Cell and Regenerative Medicine, Tokyo Medical and Dental University (TMDU), 1-5-45, Bunkyo-ku, Yushima, Tokyo, 113-8510, Japan.
| | - Takahisa Matsuzaki
- Division of Strategic Research and Development, Graduate School of Science and Engineering, Saitama University, 255, Shimo-okubo, Sakura-ku, Saitama City, Saitama, 338-8570, Japan.,Institute of Research, Tokyo Medical and Dental University (TMDU), Tokyo, Japan.,Department of Applied Physics, Graduate School of Engineering, Osaka University, 2-1, Yamadaoka, Suita City, Osaka, 565-0871, Japan
| | - Nobutake Ozeki
- Center for Stem Cell and Regenerative Medicine, Tokyo Medical and Dental University (TMDU), 1-5-45, Bunkyo-ku, Yushima, Tokyo, 113-8510, Japan
| | - Hisako Katano
- Center for Stem Cell and Regenerative Medicine, Tokyo Medical and Dental University (TMDU), 1-5-45, Bunkyo-ku, Yushima, Tokyo, 113-8510, Japan
| | - Hideyuki Koga
- Department of Joint Surgery and Sports Medicine, Graduate School, Tokyo Medical and Dental University (TMDU), 1-5-45, Bunkyo-ku, Yushima, Tokyo, 113-8519, Japan
| | - Takanori Takebe
- Institute of Research, Tokyo Medical and Dental University (TMDU), Tokyo, Japan.,Organoid Medicine Project, T-CiRA Joint Program, Fujisawa, Kanagawa, Japan.,Division of Gastroenterology, Hepatology and Nutrition and Division of Developmental Biology, Cincinnati Children's Hospital Medical Center (CCHMC), Cincinnati, OH, USA.,The Center for Stem Cell and Organoid Medicine (CuSTOM), Cincinnati Children's Hospital Medical Center, Cincinnati, OH, USA.,Department of Pediatrics, University of Cincinnati College of Medicine, Cincinnati, OH, USA
| | - Hiroshi Y Yoshikawa
- Division of Strategic Research and Development, Graduate School of Science and Engineering, Saitama University, 255, Shimo-okubo, Sakura-ku, Saitama City, Saitama, 338-8570, Japan.,Department of Applied Physics, Graduate School of Engineering, Osaka University, 2-1, Yamadaoka, Suita City, Osaka, 565-0871, Japan.,Department of Chemistry, Saitama University, 255, Shimo-okubo, Sakura-ku, Saitama City, Saitama, 338-8570, Japan
| | - Ichiro Sekiya
- Center for Stem Cell and Regenerative Medicine, Tokyo Medical and Dental University (TMDU), 1-5-45, Bunkyo-ku, Yushima, Tokyo, 113-8510, Japan
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15
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Kohno Y, Koga H, Ozeki N, Matsuda J, Mizuno M, Katano H, Sekiya I. Biomechanical analysis of a centralization procedure for extruded lateral meniscus after meniscectomy in porcine knee joints. J Orthop Res 2022; 40:1097-1103. [PMID: 34314533 PMCID: PMC9292650 DOI: 10.1002/jor.25146] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/27/2020] [Revised: 06/02/2021] [Accepted: 07/13/2021] [Indexed: 02/04/2023]
Abstract
The recently developed arthroscopic centralization for lateral meniscal extrusion has obtained satisfactory short-term clinical and radiological results and improves the meniscus biomechanical properties. However, the effectiveness of treatment for meniscus extrusion after partial meniscectomy still requires elucidation. This study investigated the effect of centralization with modifications from a mechanical viewpoint. Porcine knee joints (N = 6) were set in a universal tester under the following conditions: (1) Intact; (2) Meniscectomy: Inner half of the posterior half meniscus was removed; (3) Extrusion: Posterior meniscus was dislocated laterally by transecting the posterior root and the meniscotibial ligament; (4) Centralization-1: Centralization procedure using one anchor; (5) Centralization-2: Centralization procedure using two anchors; and (6) Centralization-ad: Centralization with capsular advancement using two anchors. Load distributions and contact pressure in the meniscus and tibial cartilage were evaluated with an axial compressive force of 200 N. After meniscectomy, the tibial cartilage load increased and that of the medial margin of the posterior part of the meniscus decreased. When the meniscus was extruded, the load was concentrated only on the tibial cartilage. Centralization-1 increased the load on the meniscus, while Centralization-2 further increased the meniscus load but decreased the tibial cartilage load. Centralization-ad further decreased the load on the tibial plateau. The average contact pressure of the tibial cartilage was significantly higher in the Extrusion group than in the Intact group or the Centralization-ad group. From a biomechanical viewpoint, centralization with capsular advancement was the most effective of the tested procedures for treatment for an extruded meniscus after partial meniscectomy.
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Affiliation(s)
- Yuji Kohno
- Center for Stem Cells and Regenerative MedicineTokyo Medical and Dental UniversityTokyoJapan
| | - Hideyuki Koga
- Department of Joint Surgery and Sports MedicineTokyo Medical and Dental UniversityTokyoJapan
| | - Nobutake Ozeki
- Center for Stem Cells and Regenerative MedicineTokyo Medical and Dental UniversityTokyoJapan
| | - Junpei Matsuda
- Center for Stem Cells and Regenerative MedicineTokyo Medical and Dental UniversityTokyoJapan
| | - Mitsuru Mizuno
- Center for Stem Cells and Regenerative MedicineTokyo Medical and Dental UniversityTokyoJapan
| | - Hisako Katano
- Center for Stem Cells and Regenerative MedicineTokyo Medical and Dental UniversityTokyoJapan
| | - Ichiro Sekiya
- Center for Stem Cells and Regenerative MedicineTokyo Medical and Dental UniversityTokyoJapan
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16
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Kohno Y, Mizuno M, Endo K, Ozeki N, Katano H, Matsumoto M, Kaneko H, Takazawa Y, Koga H, Sekiya I. Yields of mesenchymal stromal cells from synovial fluid reflect those from synovium in patients with rheumatoid arthritis. Tissue Cell 2022; 75:101727. [PMID: 34998163 DOI: 10.1016/j.tice.2021.101727] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2021] [Revised: 12/30/2021] [Accepted: 12/31/2021] [Indexed: 01/02/2023]
Abstract
The yield of primary synovial mesenchymal stromal cells (MSCs) from synovium of patients with rheumatoid arthritis (RA) is highly variable, but cell transplantation therapy with autologous synovial MSCs requires accurate prediction of the synovial MSC yield per synovium weight. Here, we determined whether the yield of synovial fluid MSCs might predict the ultimate yield of primary MSCs from the synovium of RA knees. Synovial fluid and synovium were harvested during total knee arthroplasty from the knee joints of 10 patients with RA. Synovial fluid (1.5 mL) was diluted fourfold and plated equally into six 60 cm2 dishes. Nucleated cells from digested synovium were similarly plated at 1 × 104 cells in 6 dishes. All dishes were cultured for 14 days and analyzed for MSC yields and properties, including in vitro chondrogenesis. The cultured synovial cell number was correlated with the cultured synovial fluid cell number (n = 10, R2 = 0.64, p < 0.01). Synovial fluid cells formed cell colonies and showed MSC-like surface epitopes and multi-differentiation potential. However, the cartilage pellet weight indicated a greater chondrogenic potential of the synovial MSCs (n = 8). The primary MSC yields from synovial fluid and synovium were correlated, indicating that the synovial fluid MSC yield can predict the ultimate synovial MSC yield.
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Affiliation(s)
- Yuji Kohno
- Center for Stem Cells and Regenerative Medicine, Tokyo Medical and Dental University, 1-5-45 Yushima, Bunkyo-ku, Tokyo, 113-8510, Japan
| | - Mitsuru Mizuno
- Center for Stem Cells and Regenerative Medicine, Tokyo Medical and Dental University, 1-5-45 Yushima, Bunkyo-ku, Tokyo, 113-8510, Japan
| | - Kentaro Endo
- Center for Stem Cells and Regenerative Medicine, Tokyo Medical and Dental University, 1-5-45 Yushima, Bunkyo-ku, Tokyo, 113-8510, Japan
| | - Nobutake Ozeki
- Center for Stem Cells and Regenerative Medicine, Tokyo Medical and Dental University, 1-5-45 Yushima, Bunkyo-ku, Tokyo, 113-8510, Japan
| | - Hisako Katano
- Center for Stem Cells and Regenerative Medicine, Tokyo Medical and Dental University, 1-5-45 Yushima, Bunkyo-ku, Tokyo, 113-8510, Japan
| | - Mikio Matsumoto
- Department of Orthopaedics, Juntendo University School of Medicine, 3-1-3 Hongo, Bunkyo-ku, Tokyo, 113-8431, Japan
| | - Haruka Kaneko
- Department of Orthopaedics, Juntendo University School of Medicine, 3-1-3 Hongo, Bunkyo-ku, Tokyo, 113-8431, Japan
| | - Yuji Takazawa
- Department of Orthopaedics, Juntendo University School of Medicine, 3-1-3 Hongo, Bunkyo-ku, Tokyo, 113-8431, Japan
| | - Hideyuki Koga
- Department of Joint Surgery and Sports Medicine, Tokyo Medical and Dental University, 1-5-45 Yushima, Bunkyo-ku, Tokyo, 113-8510, Japan
| | - Ichiro Sekiya
- Center for Stem Cells and Regenerative Medicine, Tokyo Medical and Dental University, 1-5-45 Yushima, Bunkyo-ku, Tokyo, 113-8510, Japan.
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Gogami T, Achenbach P, Akiyama T, Androic D, Asaturyan A, Brash E, Bukhari MH, Camsonne A, Covrig Dusa S, Ebata K, Elaasar MA, Fujii Y, Fujiwara T, Furic M, Garibaldi F, Gueye P, Higinbotham DW, Ishige T, Itabashi K, Kaneta M, Kino R, Lashley N, Markowitz P, Meekins D, Mizuno M, Mkrtchyan HG, Mkrtchyan AH, Nagafusa S, Nagano S, Nagao S, Nakamura SN, Nakamura YR, Niculescu G, Niculescu I, Okuyama K, Pandey B, Pochodzalla J, Reinhold J, Rodriguez VM, Samanta C, Sawatzky B, Shabestari MH, Shahinyan A, Sirca S, Suzuki KN, Tachibana K, Tang L, Toyama Y, Tsutsumi K, Uehara K, Umezaki E, Urciuoli GM, Watanabe D, Wood SA. High accuracy spectroscopy of 3- and 4-body Λ hypernuclei at Jefferson Lab. EPJ Web Conf 2022. [DOI: 10.1051/epjconf/202227101001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
Abstract
JLab E12-19-002 Experiment is planned to measure the Λ-binding energies of 3ΛH [Jπ = 1/2+ or 3/2+(T = 0)] and 4ΛH (1+) at JLab Hall C. The expected accuracy for the binding-energy measurement is |ΔBtotal Λ | ≃ 70 keV. The accurate spectroscopy for these light hypernuclei would shed light on the puzzle of the small binding energy and short lifetime of 3ΛH, and the chargesymmetry breaking in the ΛN interaction. We aim to perform the experiment in 2025.
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Ueno M, Mano T, Kayahara T, Mizuno M. Antibiotic prophylaxis for cirrhotic patients with upper gastrointestinal bleeding: Is evidence adequate? J Gastroenterol Hepatol 2021; 36:3249-3250. [PMID: 34368981 DOI: 10.1111/jgh.15652] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/26/2021] [Accepted: 08/03/2021] [Indexed: 12/09/2022]
Affiliation(s)
- M Ueno
- Department of Gastroenterology and Hepatology, Kurashiki Central Hospital, Okayama, Japan.,Department of Gastroenterology and Hepatology, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - T Mano
- Department of Gastroenterology and Hepatology, Kurashiki Central Hospital, Okayama, Japan
| | - T Kayahara
- Department of Gastroenterology and Hepatology, Kurashiki Central Hospital, Okayama, Japan
| | - M Mizuno
- Department of Gastroenterology and Hepatology, Kurashiki Central Hospital, Okayama, Japan
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Ogawa T, Kouzu H, Osanami A, Tatekoshi Y, Oshima H, Mizuno M, Kuno A, Fujita Y, Ino S, Shimizu M, Ohwada W, Sato T, Yano T, Tanno M, Miura T. Intracellular localization of AMP deaminase and its novel role in BCAA and lipid metabolism in diabetic cardiomyopathy. Eur Heart J 2021. [DOI: 10.1093/eurheartj/ehab724.3228] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
Abstract
Background
A metabolomic study in the human heart suggested a pivotal role of amino acid (AA) metabolism in fatty acid oxidation, which is dysregulated in type 2 diabetes mellitus (T2DM) and heart failure. We previously reported that aberrant up-regulation of AMP deaminase 3 (AMPD3) impairs cardiac energetics in T2DM hearts, and AMPD3 was recently shown to be activated by fasting and to promote AA metabolism and fatty acid oxidation in skeletal muscle. A sodium glucose cotransporter 2 inhibitor (SGLT2i) has been shown to augment systemic AA metabolism, but its effect on cardiac AA metabolism remains unknown.
Purpose
We hypothesized that AMPD3 has a role in AA and lipid metabolism in cardiomyocytes and that the protective effect of an SGLT2i in diabetic hearts is mediated by modification of AA and lipid metabolism.
Methods and results
Proteomic analyses of AMPD3 immunoprecipitates in rat hearts revealed that AMPD3 interacted with the E1α and E2 components of the BCKDH complex, a rate-limiting enzyme of branched-chain AA (BCAA) catabolism. Immunoblotting using subcellular fractions revealed that BCKDH localized not only in the mitochondria matrix but also in the cytosol and endoplasmic reticulum (ER) and that AMPD3 interacted with BCKDH in the cytosol and ER. Despite comparable expression of BCKDH components and phosphorylation of E1α at Ser293, significant accumulation of BCAA was observed in T2DM rats (OLETF; 317±30 nmol/g) compared to that in control rats (LETO; 213±16 nmol/g), and the accumulation of BCAA was accompanied by up-regulation of AMPD3 in the cytosol and ER by 98% and 231%, respectively. In cardiomyocytes, disruption of BCAA catabolism by knockdown of BCKDH-E1α resulted in a 5.8-fold increase in AMPD3 at the transcriptional level and blunted lipid droplet biogenesis in response to a long-chain fatty acid challenge. Next, myocardial infarction (MI) was induced in LETO and OLETF pretreated with empagliflozin (10 mg/kg/day, 14 days) or a vehicle. Pathway analysis of cardiac metabolites revealed arginine biosynthesis and BCAA metabolism as the most significantly changed pathways with empagliflozin, with BCAA (791±187 nmol/g), glutamate, glutamine and urea being significantly increased. Empagliflozin restored myocardial ATP and survival after MI in OLETF to levels comparable to those in LETO. Electron microscopy showed a significantly higher prevalence of myocardium lipid droplets in OLETF, which was further increased by empagliflozin.
Conclusions
The results support the hypotheses that imbalance of extra-mitochondrial AMPD3-BCKDH interaction underlies dysregulated BCAA metabolism in T2DM hearts and that activation of cardiac AA metabolism by an SGLT2i normalizes fatty acid overload through sequestration into intracellular lipid droplets.
Funding Acknowledgement
Type of funding sources: Foundation. Main funding source(s): Boehringer Ingelheim
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Affiliation(s)
- T Ogawa
- Sapporo Medical University, Department of Cardiovascular, Renal and Metabolic Medicine, Sapporo, Japan
| | - H Kouzu
- Sapporo Medical University, Department of Cardiovascular, Renal and Metabolic Medicine, Sapporo, Japan
| | - A Osanami
- Sapporo Medical University, Department of Cardiovascular, Renal and Metabolic Medicine, Sapporo, Japan
| | - Y Tatekoshi
- Sapporo Medical University, Department of Cardiovascular, Renal and Metabolic Medicine, Sapporo, Japan
| | - H Oshima
- Sapporo Medical University, Department of Cardiovascular, Renal and Metabolic Medicine, Sapporo, Japan
| | - M Mizuno
- Sapporo Medical University, Department of Cardiovascular, Renal and Metabolic Medicine, Sapporo, Japan
| | - A Kuno
- Sapporo Medical University, Department of Cardiovascular, Renal and Metabolic Medicine, Sapporo, Japan
| | - Y Fujita
- Sapporo Medical University, Department of Cardiovascular, Renal and Metabolic Medicine, Sapporo, Japan
| | - S Ino
- Sapporo Medical University, Department of Cardiovascular, Renal and Metabolic Medicine, Sapporo, Japan
| | - M Shimizu
- Sapporo Medical University, Department of Cardiovascular, Renal and Metabolic Medicine, Sapporo, Japan
| | - W Ohwada
- Sapporo Medical University, Department of Cardiovascular, Renal and Metabolic Medicine, Sapporo, Japan
| | - T Sato
- Sapporo Medical University, Department of Cardiovascular, Renal and Metabolic Medicine, Sapporo, Japan
| | - T Yano
- Sapporo Medical University, Department of Cardiovascular, Renal and Metabolic Medicine, Sapporo, Japan
| | - M Tanno
- Sapporo Medical University, Department of Cardiovascular, Renal and Metabolic Medicine, Sapporo, Japan
| | - T Miura
- Sapporo Medical University, Department of Cardiovascular, Renal and Metabolic Medicine, Sapporo, Japan
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20
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Mizuno M, Endo K, Katano H, Amano N, Nomura M, Hasegawa Y, Ozeki N, Koga H, Takasu N, Ohara O, Morio T, Sekiya I. Transplantation of human autologous synovial mesenchymal stem cells with trisomy 7 into the knee joint and 5 years of follow-up. Stem Cells Transl Med 2021; 10:1530-1543. [PMID: 34342383 PMCID: PMC8550709 DOI: 10.1002/sctm.20-0491] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2020] [Revised: 05/20/2021] [Accepted: 06/16/2021] [Indexed: 01/16/2023] Open
Abstract
Mesenchymal stem cells (MSCs) can show trisomy 7; however, the safety of these cells has not been fully investigated. The purposes of this study were to determine the ratio of patients whose synovial MSCs were transplanted clinically, to intensively investigate MSCs with trisomy 7 from a safety perspective, and to follow up the patients for 5 years after transplantation. Synovial MSCs at passage 0 were transplanted into a knee for degenerative meniscus tears in 10 patients, and the patients were checked at 5 years. The synovial MSCs were evaluated at passages 0 to 15 by G‐bands and digital karyotyping, and trisomy 7 was found in 3 of 10 patients. In those three patients, 5% to 10% of the synovial MSCs showed trisomy 7. The mRNA expressions of representative oncogenes and genes on chromosome 7 did not differ between MSCs with and without trisomy 7. Whole‐genome sequencing and DNA methylation analysis showed similar results for MSCs with and without trisomy 7. Transplantation of human synovial MSCs with trisomy 7 into eight mouse knees did not result in tumor formation under the skin or in the knees after 8 weeks in any mouse, whereas transplanted HT1080 cells formed tumors. In vitro chondrogenic potentials were similar between MSCs with and without trisomy 7. Five‐year follow‐ups revealed no serious adverse events in all 10 human patients, including 3 who had received MSCs with trisomy 7. Overall, our findings indicated that synovial MSCs with trisomy 7 were comparable with MSCs without trisomy 7 from a safety perspective.
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Affiliation(s)
- Mitsuru Mizuno
- Center for Stem Cell and Regenerative MedicineTokyo Medical and Dental University (TMDU)TokyoJapan
| | - Kentaro Endo
- Center for Stem Cell and Regenerative MedicineTokyo Medical and Dental University (TMDU)TokyoJapan
| | - Hisako Katano
- Center for Stem Cell and Regenerative MedicineTokyo Medical and Dental University (TMDU)TokyoJapan
| | - Naoki Amano
- Department of Fundamental Cell TechnologyCenter for iPS Cell Research and Application, Kyoto UniversityKyotoJapan
| | - Masaki Nomura
- Department of Fundamental Cell TechnologyCenter for iPS Cell Research and Application, Kyoto UniversityKyotoJapan
| | | | - Nobutake Ozeki
- Center for Stem Cell and Regenerative MedicineTokyo Medical and Dental University (TMDU)TokyoJapan
| | - Hideyuki Koga
- Department of Joint Surgery and Sports MedicineGraduate School, Tokyo Medical and Dental University (TMDU)TokyoJapan
| | - Naoko Takasu
- Department of Fundamental Cell TechnologyCenter for iPS Cell Research and Application, Kyoto UniversityKyotoJapan
| | - Osamu Ohara
- Department of Applied GenomicsKazusa DNA Research InstituteChibaJapan
| | - Tomohiro Morio
- Department of Pediatrics and Developmental BiologyGraduate School, Tokyo Medical and Dental University (TMDU)TokyoJapan
| | - Ichiro Sekiya
- Center for Stem Cell and Regenerative MedicineTokyo Medical and Dental University (TMDU)TokyoJapan
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21
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Sekiya I, Katano H, Mizuno M, Koga H, Masumoto J, Tomita M, Ozeki N. Alterations in cartilage quantification before and after injections of mesenchymal stem cells into osteoarthritic knees. Sci Rep 2021; 11:13832. [PMID: 34226650 PMCID: PMC8257723 DOI: 10.1038/s41598-021-93462-8] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2021] [Accepted: 06/04/2021] [Indexed: 01/22/2023] Open
Abstract
Several studies have reported improvement in knee pain following mesenchymal stem cell (MSC) injections for knee osteoarthritis (OA). We developed a novel 3D magnetic resonance imaging (MRI) analysis software program that provides “projected cartilage area ratios” for automatic detection of changes in cartilage amounts. The primary objective of this prospective interventional study was to compare alterations in the projected cartilage area ratio (thickness ≥ 1.5 mm) at the femoral posteromedial region between 30 weeks before and 30 weeks after synovial MSC injections. Secondary objectives were to assess the clinical scores and safety of MSC injections. Patients with OA who complained of knee pain underwent autologous synovial MSC injections into the knee at time 0 and again 15 weeks later. MRI examinations were performed at − 30, − 15, − 1, and 30 weeks. Patients showing < 3% decreases in the projected cartilage area ratio (thickness ≥ 1.5 mm) at the femoral the posteromedial region from − 30 weeks to − 15 weeks were excluded from the study. The Lysholm Knee Score, Knee Injury and Osteoarthritis Outcome Scale (KOOS), and Numerical Rating Scale (NRS) scores were evaluated at − 30, − 15, − 5, − 2, 0, 5, 10, 15, 20, 25, and 30 weeks. Five patients were excluded because 3D MRI analysis showed no cartilage loss at − 15 weeks. Ultimately, eight OA patients underwent MSC injections. The projected cartilage area ratio significantly decreased by 0.07 in the 30 weeks before MSC injections (p = 0.01), but no further decreases occurred in the 30 weeks after MSC injections. The projected cartilage area ratio at the femoral posteromedial region showed a significant difference between 30 weeks before and 30 weeks after MSC injections. The Lysholm Knee Score, KOOS, and NRS values improved significantly after the injections. MSC injection could not be ruled out as the cause of two adverse events: transient knee pain and itching in both hands. Fully automatic 3D MRI analysis showed that synovial MSC injections suppressed cartilage loss in patients with progressive OA. Trial registration: Intraarticular injections of synovial stem cells for osteoarthritis of the knee (Number UMIN 000026732). Date of registration; June 1, 2017. https://upload.umin.ac.jp/cgi-open-bin/ctr/ctr_view.cgi?recptno=R000029967.
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Affiliation(s)
- Ichiro Sekiya
- Center for Stem Cell and Regenerative Medicine, Tokyo Medical and Dental University, 1-5-45 Yushima, Bunkyo-ku, Tokyo, 113-8510, Japan.
| | - Hisako Katano
- Center for Stem Cell and Regenerative Medicine, Tokyo Medical and Dental University, 1-5-45 Yushima, Bunkyo-ku, Tokyo, 113-8510, Japan
| | - Mitsuru Mizuno
- Center for Stem Cell and Regenerative Medicine, Tokyo Medical and Dental University, 1-5-45 Yushima, Bunkyo-ku, Tokyo, 113-8510, Japan
| | - Hideyuki Koga
- Department of Joint Surgery and Sports Medicine, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, Tokyo, Japan
| | | | - Makoto Tomita
- School of Data Science, Graduate School of Data Science, Yokohama City University, Yokohama, Japan
| | - Nobutake Ozeki
- Center for Stem Cell and Regenerative Medicine, Tokyo Medical and Dental University, 1-5-45 Yushima, Bunkyo-ku, Tokyo, 113-8510, Japan
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22
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Ozeki N, Nakagawa Y, Mizuno M, Kohno Y, Katano H, Koga H, Sekiya I. Ultrasound-Guided Harvesting of Synovium for Regenerative Medicine of Cartilage and Meniscus Using Synovial Mesenchymal Stem Cells. Arthrosc Tech 2021; 10:e1723-e1727. [PMID: 34336570 PMCID: PMC8322568 DOI: 10.1016/j.eats.2021.03.020] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/05/2021] [Accepted: 03/09/2021] [Indexed: 02/03/2023] Open
Abstract
Mesenchymal stem cell (MSC) therapy for cartilage or meniscus pathologies, including osteoarthritis, requires the easy and safe collection of MSC source materials. Synovial MSCs are attractive cell sources for joint pathology because of their high proliferative and chondrogenic potential in vitro and in vivo. We developed an ultrasound-guided harvesting procedure for synovium for the regenerative medicine of cartilage and meniscus. A ∼1-cm skin incision is made at the proximal side of the patellae, and a forceps is inserted under ultrasound guidance of the suprapatellar pouch to grasp the synovium. Here, several synovium samples were retrieved and transported sterilely for culture at the cell-processing facility. After a 14-day culture of the nucleated cells, crystal violet confirmed colony formation. Cell growth was enough for MSC therapy of joint pathology (0.89 ± 0.06 × 106 cells/dish). No adverse events occurred during synovium harvesting. A key advantage of this procedure is its minimal invasiveness, as synovium is harvested from a 1-cm skin incision in the knee joint. A disadvantage is the possible risk of hemostasis, as arresting bleeding at the synovial harvest site is difficult, even though the suprapatellar pouch contains no major vessels.
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Affiliation(s)
- Nobutake Ozeki
- Center for Stem Cell and Regenerative Medicine, Tokyo, Japan,Department of Orthopaedic Surgery, Tokyo Medical and Dental University Hospital of Medicine, Tokyo, Japan
| | - Yusuke Nakagawa
- Department of Joint Surgery and Sports Medicine, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, Tokyo, Japan,Department of Orthopaedic Surgery, Tokyo Medical and Dental University Hospital of Medicine, Tokyo, Japan
| | - Mitsuru Mizuno
- Center for Stem Cell and Regenerative Medicine, Tokyo, Japan
| | - Yuji Kohno
- Center for Stem Cell and Regenerative Medicine, Tokyo, Japan,Department of Orthopaedic Surgery, Tokyo Medical and Dental University Hospital of Medicine, Tokyo, Japan
| | - Hisako Katano
- Center for Stem Cell and Regenerative Medicine, Tokyo, Japan
| | - Hideyuki Koga
- Department of Joint Surgery and Sports Medicine, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, Tokyo, Japan,Department of Orthopaedic Surgery, Tokyo Medical and Dental University Hospital of Medicine, Tokyo, Japan
| | - Ichiro Sekiya
- Center for Stem Cell and Regenerative Medicine, Tokyo, Japan,Department of Orthopaedic Surgery, Tokyo Medical and Dental University Hospital of Medicine, Tokyo, Japan,Address correspondence to Ichiro Sekiya, M.D., Ph.D., Center for Stem Cell and Regenerative Medicine, Tokyo Medical and Dental University, 1-5-45 Yushima, Bunkyo-ku, Tokyo, 113-8510 Japan.
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23
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Horiuchi K, Ozeki N, Endo K, Mizuno M, Katano H, Akiyama M, Tsuji K, Koga H, Sekiya I. Thawed cryopreserved synovial mesenchymal stem cells show comparable effects to cultured cells in the inhibition of osteoarthritis progression in rats. Sci Rep 2021; 11:9683. [PMID: 33958682 PMCID: PMC8102597 DOI: 10.1038/s41598-021-89239-8] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2020] [Accepted: 04/22/2021] [Indexed: 12/19/2022] Open
Abstract
Intra-articular injections of mesenchymal stem cells (MSCs) can inhibit the progression of osteoarthritis (OA). Previous reports have used cultured MSCs, but the ability to use thawed cryopreserved MSC stocks would be highly advantageous. Our purpose was to elucidate whether thawed cryopreserved MSCs show comparable inhibitory effects on OA progression in rats to those obtained with cultured MSCs. Cultured rat synovial MSCs or thawed MSCs were compared for in vitro viability and properties. The inhibitory effect of thawed MSCs on OA progression was evaluated by injecting cryopreservation fluid and thawed MSCs in meniscectomized rats. Cartilage degeneration was assessed using gross finding and histological scores. Cultured MSCs were then injected into one knee and thawed MSCs into the contralateral knee of the same individual to compare their effects. Cultured MSCs and MSCs thawed after cryopreservation had comparable in vitro colony formation and chondrogenic potentials. In the rat OA model, the gross finding and histological scores were significantly lower in the thawed MSC group than in the cryopreservation fluid group at 8 weeks. Finally, cartilage degeneration did not differ significantly after injection of cultured and thawed MSCs. In conclusion, thawed MSCs showed comparable inhibitory effects on OA progression to cultured MSCs.
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Affiliation(s)
- Kiyotaka Horiuchi
- Center for Stem Cell and Regenerative Medicine, Tokyo Medical and Dental University, 1-5-45 Yushima, Bunkyo-ku, Tokyo, 113-8510, Japan
| | - Nobutake Ozeki
- Center for Stem Cell and Regenerative Medicine, Tokyo Medical and Dental University, 1-5-45 Yushima, Bunkyo-ku, Tokyo, 113-8510, Japan
| | - Kentaro Endo
- Center for Stem Cell and Regenerative Medicine, Tokyo Medical and Dental University, 1-5-45 Yushima, Bunkyo-ku, Tokyo, 113-8510, Japan
| | - Mitsuru Mizuno
- Center for Stem Cell and Regenerative Medicine, Tokyo Medical and Dental University, 1-5-45 Yushima, Bunkyo-ku, Tokyo, 113-8510, Japan
| | - Hisako Katano
- Center for Stem Cell and Regenerative Medicine, Tokyo Medical and Dental University, 1-5-45 Yushima, Bunkyo-ku, Tokyo, 113-8510, Japan
| | - Masako Akiyama
- Research Administration Division, Tokyo Medical and Dental University, Tokyo, Japan
| | - Kunikazu Tsuji
- Department of Cartilage Regeneration, Tokyo Medical and Dental University, Tokyo, Japan
| | - Hideyuki Koga
- Department of Joint Surgery and Sports Medicine, Tokyo Medical and Dental University, Tokyo, Japan
| | - Ichiro Sekiya
- Center for Stem Cell and Regenerative Medicine, Tokyo Medical and Dental University, 1-5-45 Yushima, Bunkyo-ku, Tokyo, 113-8510, Japan.
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Ozeki N, Kohno Y, Kushida Y, Watanabe N, Mizuno M, Katano H, Masumoto J, Koga H, Sekiya I. Synovial mesenchymal stem cells promote the meniscus repair in a novel pig meniscus injury model. J Orthop Res 2021; 39:177-183. [PMID: 32886427 PMCID: PMC7821148 DOI: 10.1002/jor.24846] [Citation(s) in RCA: 21] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/26/2020] [Revised: 08/20/2020] [Accepted: 09/02/2020] [Indexed: 02/04/2023]
Abstract
Stem cell therapy has potential for the treatment of degenerative meniscus injuries; however, an optimal animal model has not been established. Basic and clinical research show that synovial mesenchymal stem cells (MSCs) promote meniscus repair. The purposes of this study were to create a novel meniscus injury model in microminipigs and to investigate the effectiveness of synovial MSCs on meniscus healing in this model. The posterior portion of the medial meniscus in microminipigs was punctuated 200 times with a 23G needle. Allogenic synovial MSC suspension was placed on the injury site for 10 min for transplantation. The meniscus was evaluated histologically and via sagittal magnetic resonance imaging (MRI), radial MRI reconstructed in three dimensional, and T2 mapping at 1 and 8 weeks. Proteoglycan content stained with safranin-o disappeared 1 week after treatment in both the MSC and control groups but increased at 8 weeks only in the MSC group. Histological scores at 8 weeks were significantly higher in the MSC group than in the control group (n = 6). At 8 weeks, the T2 values of the MSC group were significantly closer to those of a normal meniscus than were those of the control group. High signal intensity areas of the MRIs and positive areas stained with picrosirius red coincided with meniscal lesions. In conclusion, we created a novel meniscus injury model in microminipigs. Evaluation via histology, MRIs, and polarized microscopy showed that transplantation of synovial MSCs improved meniscus healing.
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Affiliation(s)
- Nobutake Ozeki
- Center for Stem Cell and Regenerative MedicineTokyo Medical and Dental UniversityTokyoJapan
| | - Yuji Kohno
- Center for Stem Cell and Regenerative MedicineTokyo Medical and Dental UniversityTokyoJapan
| | - Yoshihisa Kushida
- Center for Stem Cell and Regenerative MedicineTokyo Medical and Dental UniversityTokyoJapan
| | - Naoto Watanabe
- Center for Stem Cell and Regenerative MedicineTokyo Medical and Dental UniversityTokyoJapan
| | - Mitsuru Mizuno
- Center for Stem Cell and Regenerative MedicineTokyo Medical and Dental UniversityTokyoJapan
| | - Hisako Katano
- Center for Stem Cell and Regenerative MedicineTokyo Medical and Dental UniversityTokyoJapan
| | | | - Hideyuki Koga
- Department of Joint Surgery and Sports Medicine, Graduate School of Medical and Dental SciencesTokyo Medical and Dental UniversityTokyoJapan
| | - Ichiro Sekiya
- Center for Stem Cell and Regenerative MedicineTokyo Medical and Dental UniversityTokyoJapan
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25
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Kushida Y, Ozeki N, Mizuno M, Katano H, Otabe K, Tsuji K, Koga H, Kishima K, Soma Y, Sekiya I. Two- and three-dimensional optical coherence tomography to differentiate degenerative changes in a rat meniscectomy model. J Orthop Res 2020; 38:2592-2600. [PMID: 32697398 DOI: 10.1002/jor.24808] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/15/2019] [Revised: 05/18/2020] [Accepted: 06/12/2020] [Indexed: 02/04/2023]
Abstract
Optical coherence tomography (OCT) is an attractive tool for evaluating cartilage. We developed an OCT system that reconstructs and analyzes a three-dimensional (3D) OCT image by determining the cartilage surface and cartilage-bone boundary from the image taken with currently available OCT devices. We examined the usefulness of 3D renderings of OCT images. In a rat meniscectomized model, the tibia was harvested after 0, 2, 4, or 8 weeks (n = 6). We scanned 300 slices in the y-plane to cover a 4 × 3 × 6-mm section (x-plane; 10 µm × 400 pixels, y-plane; 10 µm × 300 pixels, z-plane; 12.66 µm × 500 pixels) of the medial tibial cartilage. The cartilage surface line and the cartilage-bone boundary were plotted semi-automatically. Slices from 300 two-dimensional (2D) sequential images were systematically and visually checked and corrected, as necessary. We set a region of interest in the cartilage and quantified the cartilage volume in the 3D image. The Osteoarthritis Research Society International (OARSI) histological score was also obtained. The cartilage volume determined using 3D OCT images was 0.291 ± 0.022 mm3 in the normal, 0.264 ± 0.009 mm3 at 2 weeks, 0.210 ± 0.012 mm3 at 4 weeks, and 0.205 ± 0.011 mm3 at 8 weeks. The cartilage volume significantly decreased at 4 and 8 weeks and was significantly correlated with the OARSI histological score (r = -0.674; P = .002). Although the 3D image information could be obtained from the 2D images, the 3D OCT images provided easier-to-understand information because the 3D reconstructed cartilage provided information about the smoothness of the surface, the area, and depth of the defect at a glance.
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Affiliation(s)
- Yoshihisa Kushida
- Center for Stem Cell and Regenerative Medicine, Tokyo Medical and Dental University, Tokyo, Japan
| | - Nobutake Ozeki
- Center for Stem Cell and Regenerative Medicine, Tokyo Medical and Dental University, Tokyo, Japan
| | - Mitsuru Mizuno
- Center for Stem Cell and Regenerative Medicine, Tokyo Medical and Dental University, Tokyo, Japan
| | - Hisako Katano
- Center for Stem Cell and Regenerative Medicine, Tokyo Medical and Dental University, Tokyo, Japan
| | - Koji Otabe
- Center for Stem Cell and Regenerative Medicine, Tokyo Medical and Dental University, Tokyo, Japan
| | - Kunikazu Tsuji
- Department of Cartilage Regeneration, Graduate School, Tokyo Medical and Dental University, Tokyo, Japan
| | - Hideyuki Koga
- Department of Joint Surgery and Sports Medicine, Tokyo Medical and Dental University, Tokyo, Japan
| | | | - Yoshio Soma
- Sony Imaging Products & Solutions Inc, Tokyo, Japan
| | - Ichiro Sekiya
- Center for Stem Cell and Regenerative Medicine, Tokyo Medical and Dental University, Tokyo, Japan
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Ueno M, Takabatake H, Kayahara T, Morimoto Y, Mizuno M. 1000P Trends of characteristics, treatment and prognosis of hepatocellular carcinoma in Japan during the last decade. Ann Oncol 2020. [DOI: 10.1016/j.annonc.2020.08.1116] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022] Open
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27
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Mizuno M, Endo K, Katano H, Tsuji A, Kojima N, Watanabe K, Shimizu N, Morio T, Sekiya I. The environmental risk assessment of cell-processing facilities for cell therapy in a Japanese academic institution. PLoS One 2020; 15:e0236600. [PMID: 32756610 PMCID: PMC7406055 DOI: 10.1371/journal.pone.0236600] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2020] [Accepted: 07/08/2020] [Indexed: 01/17/2023] Open
Abstract
Cell therapy is a promising treatment. One of the key aspects of cell processing products is ensuring sterility of cell-processing facilities (CPFs). The objective of this study was to assess the environmental risk factors inside and outside CPFs. We monitored the temperature, humidity, particle number, colony number of microorganisms, bacteria, fungi, and harmful insects in and around our CPF monthly over one year. The temperature in the CPF was constant but the humidity fluctuated depending on the humidity outside. The particle number correlated with the number of entries to the room. Except for winter, colonies of microorganisms and harmful insects were detected depending on the cleanliness of the room. Seven bacterial and two fungal species were identified by PCR analyses. Psocoptera and Acari each accounted for 41% of the total trapped insects. These results provide useful data for taking the appropriate steps to keep entire CPFs clean.
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Affiliation(s)
- Mitsuru Mizuno
- Center for Stem Cell and Regenerative Medicine, Tokyo Medical and Dental University, Bunkyo-ku, Yushima, Tokyo, Japan
- Center for Transfusion Medicine and Cell Therapy, Tokyo Medical and Dental University, Bunkyo-ku, Yushima, Tokyo, Japan
| | - Kentaro Endo
- Center for Stem Cell and Regenerative Medicine, Tokyo Medical and Dental University, Bunkyo-ku, Yushima, Tokyo, Japan
| | - Hisako Katano
- Center for Stem Cell and Regenerative Medicine, Tokyo Medical and Dental University, Bunkyo-ku, Yushima, Tokyo, Japan
- Center for Transfusion Medicine and Cell Therapy, Tokyo Medical and Dental University, Bunkyo-ku, Yushima, Tokyo, Japan
| | - Ayako Tsuji
- Center for Transfusion Medicine and Cell Therapy, Tokyo Medical and Dental University, Bunkyo-ku, Yushima, Tokyo, Japan
| | - Naomi Kojima
- Center for Stem Cell and Regenerative Medicine, Tokyo Medical and Dental University, Bunkyo-ku, Yushima, Tokyo, Japan
| | - Ken Watanabe
- Center for Stem Cell and Regenerative Medicine, Tokyo Medical and Dental University, Bunkyo-ku, Yushima, Tokyo, Japan
| | - Norio Shimizu
- Center for Stem Cell and Regenerative Medicine, Tokyo Medical and Dental University, Bunkyo-ku, Yushima, Tokyo, Japan
- Center for Transfusion Medicine and Cell Therapy, Tokyo Medical and Dental University, Bunkyo-ku, Yushima, Tokyo, Japan
| | - Tomohiro Morio
- Center for Transfusion Medicine and Cell Therapy, Tokyo Medical and Dental University, Bunkyo-ku, Yushima, Tokyo, Japan
- Department of Pediatrics and Developmental Biology, Graduate School, Tokyo Medical and Dental University, Bunkyo-ku, Yushima, Tokyo, Japan
| | - Ichiro Sekiya
- Center for Stem Cell and Regenerative Medicine, Tokyo Medical and Dental University, Bunkyo-ku, Yushima, Tokyo, Japan
- Center for Transfusion Medicine and Cell Therapy, Tokyo Medical and Dental University, Bunkyo-ku, Yushima, Tokyo, Japan
- * E-mail:
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Mizuno M, Fukunaga A, Washio K, Imamura S, Oda Y, Nishigori C. A visual analogue scale for itch and pain in 23 cases of cholinergic urticaria. J Eur Acad Dermatol Venereol 2020; 34:e493-e495. [PMID: 32242985 DOI: 10.1111/jdv.16410] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2019] [Revised: 02/12/2020] [Accepted: 03/17/2020] [Indexed: 12/15/2022]
Affiliation(s)
- M Mizuno
- Division of Dermatology, Department of Internal Related, Kobe University Graduate School of Medicine, Kobe, Japan
| | - A Fukunaga
- Division of Dermatology, Department of Internal Related, Kobe University Graduate School of Medicine, Kobe, Japan
| | - K Washio
- Division of Dermatology, Department of Internal Related, Kobe University Graduate School of Medicine, Kobe, Japan
| | - S Imamura
- Division of Dermatology, Department of Internal Related, Kobe University Graduate School of Medicine, Kobe, Japan
| | - Y Oda
- Division of Dermatology, Department of Internal Related, Kobe University Graduate School of Medicine, Kobe, Japan
| | - C Nishigori
- Division of Dermatology, Department of Internal Related, Kobe University Graduate School of Medicine, Kobe, Japan
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Kubota R, Koga H, Ozeki N, Matsuda J, Kohno Y, Mizuno M, Katano H, Sekiya I. The effect of a centralization procedure for extruded lateral meniscus on load distribution in porcine knee joints at different flexion angles. BMC Musculoskelet Disord 2020; 21:205. [PMID: 32245447 PMCID: PMC7126455 DOI: 10.1186/s12891-020-03197-2] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/19/2019] [Accepted: 03/09/2020] [Indexed: 12/25/2022] Open
Abstract
Background Meniscal extrusion results in loss of the ability to resist hoop strain and biomechanical overload on the joint articular surface. A centralization technique has been developed to overcome these problems. In this study, we analyzed the biomechanics of the extruded and centralized lateral meniscus (LM) in porcine knee joints at different flexion angles. Methods Porcine knee joints (n = 8) were set in the universal tester and each knee was tested under the following states: 1) intact; 2) extrusion—meniscal extrusion was created by resecting the posterior root of the LM and posterior synovial capsule; and 3) centralization—centralization was performed by two anchors inserted in the lateral tibial plateau. Deviation distance of the meniscus, contact pressure, and contact area in the anterior LM, middle LM, posterior LM, and the contact pressure of the tibial cartilage were evaluated with an axial compressive force of 200 N at knee flexion angles of 30°, 45°, 60°, and 90°. Results The deviation distance of LM significantly increased in extrusion but was restored to the intact status after centralization at all angles. Both the contact pressure and area significantly decreased in extrusion and were restored after centralization close to the intact status in the anterior and middle LM; in the posterior LM, however, decreased contact pressure and area were not restored after centralization. The contact pressure of the tibial cartilage increased significantly in extrusion but decreased close to the intact status after centralization. Conclusions This centralization procedure could reduce extrusion of the LM and restore the load-distributing function of the anterior-middle LM. However, the procedure itself could not restore hoop function in cases where the defect lies in the posterior LM.
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Affiliation(s)
- Rei Kubota
- Center for Stem Cell and Regenerative Medicine, Tokyo Medical and Dental University, 1-5-45 Yushima, Bunkyo-ku, Tokyo, 113-8510, Japan
| | - Hideyuki Koga
- Department of Joint Surgery and Sports Medicine, Graduate School, Tokyo Medical and Dental University, Bunkyo City, Japan
| | - Nobutake Ozeki
- Center for Stem Cell and Regenerative Medicine, Tokyo Medical and Dental University, 1-5-45 Yushima, Bunkyo-ku, Tokyo, 113-8510, Japan.
| | - Junpei Matsuda
- Center for Stem Cell and Regenerative Medicine, Tokyo Medical and Dental University, 1-5-45 Yushima, Bunkyo-ku, Tokyo, 113-8510, Japan
| | - Yuji Kohno
- Center for Stem Cell and Regenerative Medicine, Tokyo Medical and Dental University, 1-5-45 Yushima, Bunkyo-ku, Tokyo, 113-8510, Japan
| | - Mitsuru Mizuno
- Center for Stem Cell and Regenerative Medicine, Tokyo Medical and Dental University, 1-5-45 Yushima, Bunkyo-ku, Tokyo, 113-8510, Japan
| | - Hisako Katano
- Center for Stem Cell and Regenerative Medicine, Tokyo Medical and Dental University, 1-5-45 Yushima, Bunkyo-ku, Tokyo, 113-8510, Japan
| | - Ichiro Sekiya
- Center for Stem Cell and Regenerative Medicine, Tokyo Medical and Dental University, 1-5-45 Yushima, Bunkyo-ku, Tokyo, 113-8510, Japan
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Mizuno T, Mizuno M, Harada K, Takano H, Shinoda A, Takahashi A, Mamada K, Takamura K, Chen A, Iwanaga K, Ono S, Uechi M. Surgical correction for sinus venosus atrial septal defect with partial anomalous pulmonary venous connection in a dog. J Vet Cardiol 2020; 28:23-30. [DOI: 10.1016/j.jvc.2020.01.006] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2019] [Revised: 01/30/2020] [Accepted: 01/30/2020] [Indexed: 11/27/2022]
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Ozeki N, Koga H, Matsuda J, Kohno Y, Mizuno M, Katano H, Tsuji K, Saito T, Muneta T, Sekiya I. Biomechanical analysis of the centralization procedure for extruded lateral menisci with posterior root deficiency in a porcine model. J Orthop Sci 2020; 25:161-166. [PMID: 30902537 DOI: 10.1016/j.jos.2019.02.015] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/11/2018] [Revised: 01/05/2019] [Accepted: 02/12/2019] [Indexed: 02/09/2023]
Abstract
PURPOSE The purpose of this study was to investigate the biomechanical properties of load distribution following a centralization procedure for extruded lateral menisci with posterior root deficiency in a porcine model. METHODS Six porcine knee joints were analyzed in a universal tester, as follows: 1) Intact; 2) Extrusion (meniscus extrusion was created by resecting the posterior root of the lateral meniscus, as well as the posterior synovial capsule); and 3) Centralization (two anchors were inserted at the lateral tibial plateau, and the meniscus was sutured to secure it close to the original position). Meniscus extrusion was evaluated using two markers put on the posterior cruciate ligament and the lateral meniscus, and the load distribution were assessed using a pressure mapping sensor system after applying a loading force of 200 N to the knee joint. RESULTS Distance between two markers (mm, Average; 95% CI) was larger in the extrusion group (21.9; 17.8, 25.6) than in the intact (18.1; 15.1, 22.7) or the centralization (15.3; 12.9, 18.0) groups. The contact area (mm2) in the middle of the meniscus was significantly smaller in the extrusion group (45.8; 18.5, 73.2) than in the intact (85.7; 72.1, 99.2) or the centralization (98.3; 88.8, 107.8) groups. The maximum contact pressure (MPa) in the tibial plateau was significantly higher in the extrusion group (0.37; 0.35, 0.40) than in the intact (0.29; 0.21, 0.37) or the centralization (0.29; 0.22, 0.36) groups. CONCLUSIONS The centralization procedure enabled a reduction of the meniscus extrusion in the lateral meniscus with posterior root deficiency and restored the maximum load and contact pressure to values close to those of the normal knee joint.
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Affiliation(s)
- Nobutake Ozeki
- Center for Stem Cell and Regenerative Medicine, Tokyo Medical and Dental University, Japan; Department of Orthopaedic Surgery, Yokohama City University, Japan
| | - Hideyuki Koga
- Department of Joint Surgery and Sports Medicine, Graduate School, Tokyo Medical and Dental University, Japan
| | - Junpei Matsuda
- Center for Stem Cell and Regenerative Medicine, Tokyo Medical and Dental University, Japan
| | - Yuji Kohno
- Center for Stem Cell and Regenerative Medicine, Tokyo Medical and Dental University, Japan
| | - Mitsuru Mizuno
- Center for Stem Cell and Regenerative Medicine, Tokyo Medical and Dental University, Japan
| | - Hisako Katano
- Center for Stem Cell and Regenerative Medicine, Tokyo Medical and Dental University, Japan
| | - Kunikazu Tsuji
- Department of Cartilage Regeneration, Tokyo Medical and Dental University, Japan
| | - Tomoyuki Saito
- Department of Orthopaedic Surgery, Yokohama City University, Japan
| | - Takeshi Muneta
- National Hospital Organization Disaster Medical Center, Japan
| | - Ichiro Sekiya
- Center for Stem Cell and Regenerative Medicine, Tokyo Medical and Dental University, Japan.
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Mizuno M, Katano H, Shimozaki Y, Sanami S, Ozeki N, Koga H, Sekiya I. Time-lapse image analysis for whole colony growth curves and daily distribution of the cell number per colony during the expansion of mesenchymal stem cells. Sci Rep 2019; 9:16835. [PMID: 31728017 PMCID: PMC6856116 DOI: 10.1038/s41598-019-53383-z] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2019] [Accepted: 10/31/2019] [Indexed: 12/24/2022] Open
Abstract
Mesenchymal stem cells from the synovium (synovial MSCs) are attractive for cartilage and meniscus regeneration therapy. We developed a software program that can distinguish individual colonies and automatically count the cell number per colony using time-lapse images. In this study, we investigated the usefulness of the software and analyzed colony formation in cultured synovial MSCs. Time-lapse image data were obtained for 14-day-expanded human synovial MSCs. The cell number per colony (for 145 colonies) was automatically counted from phase-contrast and nuclear-stained images. Colony growth curves from day 1 to day 14 (for 140 colonies) were classified using cluster analysis. Correlation analysis of the distribution of the cell number per colony at 14 days versus that number at 1–14 days revealed a correlation at 7 and 14 days. We obtained accurate cell number counts from phase-contrast images. Individual colony growth curves were classified into three main groups and subgroups. Our image analysis software has the potential to improve the evaluation of cell proliferation and to facilitate successful clinical applications using MSCs.
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Affiliation(s)
- Mitsuru Mizuno
- Center for Stem Cell and Regenerative Medicine, Tokyo Medical and Dental University, 1-5-45, Bunkyo-ku, Yushima, Tokyo, Japan
| | - Hisako Katano
- Center for Stem Cell and Regenerative Medicine, Tokyo Medical and Dental University, 1-5-45, Bunkyo-ku, Yushima, Tokyo, Japan
| | - Yuri Shimozaki
- Research & Development Center, Dai Nippon Printing Co., Ltd., Tokyo, Japan
| | - Sho Sanami
- Research & Development Center, Dai Nippon Printing Co., Ltd., Tokyo, Japan
| | - Nobutake Ozeki
- Center for Stem Cell and Regenerative Medicine, Tokyo Medical and Dental University, 1-5-45, Bunkyo-ku, Yushima, Tokyo, Japan
| | - Hideyuki Koga
- Department of Joint Surgery and Sports Medicine, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, Tokyo, Japan
| | - Ichiro Sekiya
- Center for Stem Cell and Regenerative Medicine, Tokyo Medical and Dental University, 1-5-45, Bunkyo-ku, Yushima, Tokyo, Japan.
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Watanabe N, Mizuno M, Matsuda J, Nakamura N, Otabe K, Katano H, Ozeki N, Kohno Y, Kimura T, Tsuji K, Koga H, Kishida A, Sekiya I. Comparison of High-Hydrostatic-Pressure Decellularized Versus Freeze-Thawed Porcine Menisci. J Orthop Res 2019; 37:2466-2475. [PMID: 31115925 DOI: 10.1002/jor.24350] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/09/2019] [Accepted: 05/14/2019] [Indexed: 02/04/2023]
Abstract
The meniscus functions as a load distributor and secondary stabilizer in the knee, and the loss of the meniscus increases the risk of osteoarthritis. Freeze-thawed menisci are used in clinical practice to replace defective menisci; however, the disadvantages of freeze-thawed tissues include disease transmission and immune rejection. In this study, we decellularized menisci using high hydrostatic pressure (HHP) and compared the decellularized menisci with freeze-thawed menisci. Porcine menisci were either pressurized at 1,000 MPa for 10 min and then washed with DNase solution or frozen at -80°C for 2 days and thawed. These menisci then underwent in vitro histological, biochemical, and biomechanical comparisons with native menisci. The HHP-treated and freeze-thawed menisci were also subcutaneously implanted in a pig, and later harvested for histological analysis. The numbers of histologically detected cells were significantly lower and the amount of biochemically detected DNA was approximately 100-fold lower in HHP-treated than in native and freeze-thawed menisci. The compression strength of the HHP-decellularized menisci was decreased after 1 and 50 cycles at 20% strain but was unchanged in the freeze-thawed menisci. After implantation, the numbers of multinucleated giant cells were significantly lower around the HHP-treated menisci than around the freeze-thawed menisci. Recellularization of the HHP-decellularized menisci was confirmed. Thus, although the HHP-decellularized menisci were mechanically inferior to the freeze-thawed meniscus in vitro, they were immunologically superior. Our study is the first to demonstrate the use of HHP for decellularization of the meniscus. © 2019 The Authors. Journal of Orthopaedic Research® published by Wiley Periodicals, Inc. on behalf of Orthopaedic Research Society. J Orthop Res 37:2466-2475, 2019.
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Affiliation(s)
- Naoto Watanabe
- Center for Stem Cell and Regenerative Medicine, Tokyo Medical and Dental University, Tokyo, Japan
| | - Mitsuru Mizuno
- Center for Stem Cell and Regenerative Medicine, Tokyo Medical and Dental University, Tokyo, Japan
| | - Junpei Matsuda
- Center for Stem Cell and Regenerative Medicine, Tokyo Medical and Dental University, Tokyo, Japan
| | - Naoko Nakamura
- Department of Bioscience and Engineering, College of Systems Engineering and Science, Shibaura Institute of Technology, Saitama, Japan
| | - Koji Otabe
- Center for Stem Cell and Regenerative Medicine, Tokyo Medical and Dental University, Tokyo, Japan
| | - Hisako Katano
- Center for Stem Cell and Regenerative Medicine, Tokyo Medical and Dental University, Tokyo, Japan
| | - Nobutake Ozeki
- Center for Stem Cell and Regenerative Medicine, Tokyo Medical and Dental University, Tokyo, Japan
| | - Yuji Kohno
- Center for Stem Cell and Regenerative Medicine, Tokyo Medical and Dental University, Tokyo, Japan
| | - Tsuyoshi Kimura
- Department of Material-Based Medical Engineering, Institute of Biomaterials and Bioengineering, Tokyo Medical and Dental University, Tokyo, Japan
| | - Kunikazu Tsuji
- Department of Cartilage Regeneration, Tokyo Medical and Dental University, Tokyo, Japan
| | - Hideyuki Koga
- Department of Joint Surgery and Sports Medicine, Tokyo Medical and Dental University, Tokyo, Japan
| | - Akio Kishida
- Department of Material-Based Medical Engineering, Institute of Biomaterials and Bioengineering, Tokyo Medical and Dental University, Tokyo, Japan
| | - Ichiro Sekiya
- Center for Stem Cell and Regenerative Medicine, Tokyo Medical and Dental University, Tokyo, Japan
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Hyodo A, Ozeki N, Kohno Y, Suzuki S, Mizuno M, Otabe K, Katano H, Tomita M, Nakagawa Y, Koga H, Kiuchi S, Suzuki K, Itai Y, Masumoto J, Sekiya I. Projected Cartilage Area Ratio Determined by 3-Dimensional MRI Analysis: Validation of a Novel Technique to Evaluate Articular Cartilage. JB JS Open Access 2019; 4:e0010. [PMID: 32043053 PMCID: PMC6959912 DOI: 10.2106/jbjs.oa.19.00010] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/23/2023] Open
Abstract
We have developed 3-dimensional (3D) magnetic resonance imaging (MRI) analysis software that allows measurement of the projected cartilage area ratio with a particular thickness intended to allow quantitation of the cartilage in the knee. Our aims in this study were to validate the projected cartilage area ratio in both pig and human knees and to examine the ratio in patients reporting knee pain. Methods After 3D MRI reconstruction, the femoral cartilage was projected onto a flat surface. The projected cartilage area was determined in pig knees using our 3D MRI analysis software, and was compared with the area obtained with other software. The projected cartilage area ratio (for cartilage thickness ≥1.5 mm) at 4 segments was also validated in human knees. Finally, changes in the projected cartilage area ratio were examined in 8 patients with knee pain who had undergone 2 MR images at 3 to 21-month intervals. Results The projected cartilage areas determined with our 3D MRI analysis software were validated in pig knees. The projected cartilage area ratio at each segment in human knees had an intraclass correlation coefficient (ICC) of 0.87 to 0.99 (n = 16) between readers and 0.76 to 0.99 (n = 20) between measurements on repeat MR images. The projected cartilage area ratio (for cartilage thickness ≥1.5 mm) at the most affected segment in 8 human patients significantly decreased between the pairs of MR images obtained at intervals of 3 to 21 months. Conclusions We proposed a novel evaluation method using 3D MRI to quantify the amount of cartilage in the knee. This method had a low measurement error in both pig and human knees. Clinical Relevance The projected cartilage area ratio based on a particular thickness may serve as a sensitive method for assessing changes in cartilage over time.
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Affiliation(s)
- Akinobu Hyodo
- Center for Stem Cell and Regenerative Medicine (A.H., N.O., Y.K., S.S., M.M., K.O., H. Katano, and I.S.), Clinical Research Center (M.T.), and Department of Joint Surgery and Sports Medicine (Y.N. and H. Koga), Tokyo Medical and Dental University, Tokyo, Japan
| | - Nobutake Ozeki
- Center for Stem Cell and Regenerative Medicine (A.H., N.O., Y.K., S.S., M.M., K.O., H. Katano, and I.S.), Clinical Research Center (M.T.), and Department of Joint Surgery and Sports Medicine (Y.N. and H. Koga), Tokyo Medical and Dental University, Tokyo, Japan
| | - Yuji Kohno
- Center for Stem Cell and Regenerative Medicine (A.H., N.O., Y.K., S.S., M.M., K.O., H. Katano, and I.S.), Clinical Research Center (M.T.), and Department of Joint Surgery and Sports Medicine (Y.N. and H. Koga), Tokyo Medical and Dental University, Tokyo, Japan
| | - So Suzuki
- Center for Stem Cell and Regenerative Medicine (A.H., N.O., Y.K., S.S., M.M., K.O., H. Katano, and I.S.), Clinical Research Center (M.T.), and Department of Joint Surgery and Sports Medicine (Y.N. and H. Koga), Tokyo Medical and Dental University, Tokyo, Japan
| | - Mitsuru Mizuno
- Center for Stem Cell and Regenerative Medicine (A.H., N.O., Y.K., S.S., M.M., K.O., H. Katano, and I.S.), Clinical Research Center (M.T.), and Department of Joint Surgery and Sports Medicine (Y.N. and H. Koga), Tokyo Medical and Dental University, Tokyo, Japan
| | - Koji Otabe
- Center for Stem Cell and Regenerative Medicine (A.H., N.O., Y.K., S.S., M.M., K.O., H. Katano, and I.S.), Clinical Research Center (M.T.), and Department of Joint Surgery and Sports Medicine (Y.N. and H. Koga), Tokyo Medical and Dental University, Tokyo, Japan
| | - Hisako Katano
- Center for Stem Cell and Regenerative Medicine (A.H., N.O., Y.K., S.S., M.M., K.O., H. Katano, and I.S.), Clinical Research Center (M.T.), and Department of Joint Surgery and Sports Medicine (Y.N. and H. Koga), Tokyo Medical and Dental University, Tokyo, Japan
| | - Makoto Tomita
- Center for Stem Cell and Regenerative Medicine (A.H., N.O., Y.K., S.S., M.M., K.O., H. Katano, and I.S.), Clinical Research Center (M.T.), and Department of Joint Surgery and Sports Medicine (Y.N. and H. Koga), Tokyo Medical and Dental University, Tokyo, Japan
| | - Yusuke Nakagawa
- Center for Stem Cell and Regenerative Medicine (A.H., N.O., Y.K., S.S., M.M., K.O., H. Katano, and I.S.), Clinical Research Center (M.T.), and Department of Joint Surgery and Sports Medicine (Y.N. and H. Koga), Tokyo Medical and Dental University, Tokyo, Japan
| | - Hideyuki Koga
- Center for Stem Cell and Regenerative Medicine (A.H., N.O., Y.K., S.S., M.M., K.O., H. Katano, and I.S.), Clinical Research Center (M.T.), and Department of Joint Surgery and Sports Medicine (Y.N. and H. Koga), Tokyo Medical and Dental University, Tokyo, Japan
| | | | | | | | | | - Ichiro Sekiya
- Center for Stem Cell and Regenerative Medicine (A.H., N.O., Y.K., S.S., M.M., K.O., H. Katano, and I.S.), Clinical Research Center (M.T.), and Department of Joint Surgery and Sports Medicine (Y.N. and H. Koga), Tokyo Medical and Dental University, Tokyo, Japan
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Arimoto T, Takahiro K, Toita T, Kobayashi H, Machida R, Mizutani T, Onda T, Mizuno M, Yokota H, Kamiura S, Takehara K, Takano H, Saito T, Mandai M, Satoh T, Yamaguchi S, Nakamura T, Ushijima K, Aoki D, Yaegashi N. Spread of tumour and adverse events after modified radical hysterectomy for FIGO Stage IB1 cervical cancer patients with tumour diameter preoperatively estimated 2 cm or less: Japan Clinical Oncology Group trial (JCOG1101); exploratory analysis before primary analysis. Ann Oncol 2019. [DOI: 10.1093/annonc/mdz250.057] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Ueno M, Takabatake H, Sue M, Kayahara T, Morimoto Y, Mizuno M. Comparison of the impact of stereotactic body radiation therapy vs radiofrequency ablation on liver function in patients with single hepatocellular carcinoma: A propensity score matching analysis. Ann Oncol 2019. [DOI: 10.1093/annonc/mdz247.069] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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Kawamura M, Koide Y, Murai T, Ishihara S, Takase Y, Murao T, Okazaki D, Yamaguchi T, Uchiyama K, Itoh Y, Kodaira T, Shibamoto Y, Mizuno M, Kikkawa F, Naganawa S. Should Small Cell Carcinoma of the Cervix be Treated As Localized Small Cell Cancer or Advanced Cervical Cancer: A Retrospective Multi-Institutional Cohort Study. Int J Radiat Oncol Biol Phys 2019. [DOI: 10.1016/j.ijrobp.2019.06.1809] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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Kondo S, Nakagawa Y, Mizuno M, Katagiri K, Tsuji K, Kiuchi S, Ono H, Muneta T, Koga H, Sekiya I. Transplantation of Aggregates of Autologous Synovial Mesenchymal Stem Cells for Treatment of Cartilage Defects in the Femoral Condyle and the Femoral Groove in Microminipigs. Am J Sports Med 2019; 47:2338-2347. [PMID: 31306591 DOI: 10.1177/0363546519859855] [Citation(s) in RCA: 27] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Abstract
BACKGROUND Previous work has demonstrated that patients with cartilage defects of the knee benefit from arthroscopic transplantation of autologous synovial mesenchymal stem cells (MSCs) in terms of magnetic resonance imaging (MRI), qualitative histologic findings, and Lysholm score. However, the effectiveness was limited by the number of cells obtained, so large-sized defects (>500 mm2) were not investigated. The use of MSC aggregates may enable treatment of larger defects by increasing the number of MSCs adhering to the cartilage defect. PURPOSE To investigate whether transplantation of aggregates of autologous synovial MSCs with 2-step surgery could promote articular cartilage regeneration in microminipig osteochondral defects. STUDY DESIGN Controlled laboratory study. METHODS Synovial MSCs derived from a microminipig were examined for in vitro colony-forming and multidifferentiation abilities. An aggregate of 250,000 synovial MSCs was formed with hanging drop culture, and 16 aggregates (for each defect) were implanted on both osteochondral defects (6 × 6 × 1.5 mm) created in the medial femoral condyle and femoral groove (MSC group). The defects in the contralateral knee were left empty (control group). The knee joints were evaluated at 4 and 12 weeks by macroscopic findings and histology. MRI T1rho mapping images were acquired at 12 weeks. For cell tracking, synovial MSCs were labeled with ferucarbotran before aggregate formation and were observed with MRI at 1 week. RESULTS Synovial MSCs showed in vitro colony-forming and multidifferentiation abilities. Regenerative cartilage formation was significantly better in the MSC group than in the control group, as indicated by International Cartilage Repair Society score (macro), modified Wakitani score (histology), and T1rho mapping (biochemical MRI) in the medial condyle at 12 weeks. Implanted cells, labeled with ferucarbotran, were observed in the osteochondral defects at 1 week with MRI. No significant difference was noted in the modified Wakitani score at 4 weeks in the medial condyle and at 4 and 12 weeks in the femoral groove. CONCLUSION Transplantation of autologous synovial MSC aggregates promoted articular cartilage regeneration at the medial femoral condyle at 12 weeks in microminipigs. CLINICAL RELEVANCE Aggregates of autologous synovial MSCs could expand the indications for cartilage repair with synovial MSCs.
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Affiliation(s)
- Shimpei Kondo
- Department of Joint Surgery and Sports Medicine, Graduate School, Tokyo Medical and Dental University, Tokyo, Japan
| | - Yusuke Nakagawa
- Department of Joint Surgery and Sports Medicine, Graduate School, Tokyo Medical and Dental University, Tokyo, Japan.,Center for Stem Cell and Regenerative Medicine, Tokyo Medical and Dental University, Tokyo, Japan
| | - Mitsuru Mizuno
- Center for Stem Cell and Regenerative Medicine, Tokyo Medical and Dental University, Tokyo, Japan
| | - Kenta Katagiri
- Department of Joint Surgery and Sports Medicine, Graduate School, Tokyo Medical and Dental University, Tokyo, Japan
| | - Kunikazu Tsuji
- Department of Cartilage Regeneration, Graduate School, Tokyo Medical and Dental University, Tokyo, Japan
| | | | | | - Takeshi Muneta
- National Hospital Organization Disaster Medical Center, Tokyo, Japan
| | - Hideyuki Koga
- Department of Joint Surgery and Sports Medicine, Graduate School, Tokyo Medical and Dental University, Tokyo, Japan
| | - Ichiro Sekiya
- Center for Stem Cell and Regenerative Medicine, Tokyo Medical and Dental University, Tokyo, Japan
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Sekiya I, Koga H, Otabe K, Nakagawa Y, Katano H, Ozeki N, Mizuno M, Horie M, Kohno Y, Katagiri K, Watanabe N, Muneta T. Additional Use of Synovial Mesenchymal Stem Cell Transplantation Following Surgical Repair of a Complex Degenerative Tear of the Medial Meniscus of the Knee: A Case Report. Cell Transplant 2019; 28:1445-1454. [PMID: 31313604 PMCID: PMC6802148 DOI: 10.1177/0963689719863793] [Citation(s) in RCA: 54] [Impact Index Per Article: 10.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022] Open
Abstract
Complex degenerative tears of the medial meniscus in the knee are usually treated using
meniscectomy. However, this procedure increases the risk of osteoarthritis, while other
treatments aimed at meniscal repair remain challenging due to the high possibility of
failure. The use of synovial mesenchymal stem cells (MSCs) is an attractive additional
approach for meniscal repair, as these cells have high proliferative and chondrogenic
potential. In this case report, we surgically repaired a complex degenerative tear of the
medial meniscus and then transplanted autologous synovial MSCs. We evaluated clinical
outcomes at 2 years and assessed adverse events. We enrolled patients with clinical
symptoms that included a feeling of instability in addition to pain caused by their
complex degenerative tears of the medial meniscus. Two weeks after surgical repair of the
torn meniscus, autologous synovial MSCs were transplanted onto the menisci of five
patients. The total Lysholm knee score, the Knee Injury and Osteoarthritis Outcome Scale
scores for “pain,” “daily living,” “sports activities,” and the Numerical Rating Scale
were significantly increased after 2 years. Three adverse events, an increase in
c-reactive protein, joint effusion, and localized warmth of the knee were recorded,
although these could have been due to the meniscal repair surgery. This first-in-human
study confirmed that the combination of surgical repair and synovial MSC transplantation
improved the clinical symptoms in patients with a complex degenerative tear of the medial
meniscus. No adverse events occurred that necessitated treatment discontinuation. These
findings will serve as pilot data for a future prospective study.
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Affiliation(s)
- Ichiro Sekiya
- Center for Stem Cell and Regenerative Medicine, Tokyo Medical and Dental University, Bunkyo-ku, Tokyo, Japan
| | - Hideyuki Koga
- Department of Joint Surgery and Sports Medicine, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, Bunkyo-ku, Tokyo, Japan
| | - Koji Otabe
- Center for Stem Cell and Regenerative Medicine, Tokyo Medical and Dental University, Bunkyo-ku, Tokyo, Japan
| | - Yusuke Nakagawa
- Department of Joint Surgery and Sports Medicine, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, Bunkyo-ku, Tokyo, Japan
| | - Hisako Katano
- Center for Stem Cell and Regenerative Medicine, Tokyo Medical and Dental University, Bunkyo-ku, Tokyo, Japan
| | - Nobutake Ozeki
- Center for Stem Cell and Regenerative Medicine, Tokyo Medical and Dental University, Bunkyo-ku, Tokyo, Japan
| | - Mitsuru Mizuno
- Center for Stem Cell and Regenerative Medicine, Tokyo Medical and Dental University, Bunkyo-ku, Tokyo, Japan
| | - Masafumi Horie
- Center for Stem Cell and Regenerative Medicine, Tokyo Medical and Dental University, Bunkyo-ku, Tokyo, Japan
| | - Yuji Kohno
- Center for Stem Cell and Regenerative Medicine, Tokyo Medical and Dental University, Bunkyo-ku, Tokyo, Japan
| | - Kenta Katagiri
- Center for Stem Cell and Regenerative Medicine, Tokyo Medical and Dental University, Bunkyo-ku, Tokyo, Japan
| | - Naoto Watanabe
- Center for Stem Cell and Regenerative Medicine, Tokyo Medical and Dental University, Bunkyo-ku, Tokyo, Japan
| | - Takeshi Muneta
- Department of Joint Surgery and Sports Medicine, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, Bunkyo-ku, Tokyo, Japan
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Fujisawa R, Mizuno M, Katano H, Otabe K, Ozeki N, Tsuji K, Koga H, Sekiya I. Cryopreservation in 95% serum with 5% DMSO maintains colony formation and chondrogenic abilities in human synovial mesenchymal stem cells. BMC Musculoskelet Disord 2019; 20:316. [PMID: 31279341 PMCID: PMC6612159 DOI: 10.1186/s12891-019-2700-3] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/20/2018] [Accepted: 06/27/2019] [Indexed: 12/23/2022] Open
Abstract
Background Synovial mesenchymal stem cells (MSCs) are an attractive cell source for cartilage and meniscus regeneration. The optimum cryopreservation medium has not been determined, but dimethylsulfoxide (DMSO) should be excluded, if possible, because of its toxicity. The purposes of our study were to examine the possible benefits of higher concentrations of serum and the effectiveness of 100% serum (without DMSO) for the cryopreservation of synovial MSCs. Methods Human synovium was harvested from the knees of four donors with osteoarthritis during total knee arthroplasty. Synovial MSCs (8 × 105 cells) were suspended in 400 μL medium and used as a Time 0 control. The same number of synovial MSCs was also suspended in 400 μL α-MEM medium containing 10% fetal bovine serum (FBS) (5% DMSO, and 1% antibiotic), 95% FBS (and 5% DMSO), or 100% FBS (no DMSO) and cryopreserved at − 80 °C for 7 days. After thawing, the cell suspensions (1.5 μL; 3 × 103 cells) were cultured in 60 cm2 dishes for 14 days for colony formation assays. Additional 62.5 μL samples of cell suspensions (1.25 × 105 cells) were added to tubes and cultured for 21 days for chondrogenesis assays. Results Colony numbers were significantly higher in the Time 0 and 95% FBS groups than in the 10% FBS group (n = 24). Colony numbers were much lower in the 100% FBS group than in the other three groups. The cell numbers per dish reflected the colony numbers. Cartilage pellet weights were significantly heavier in the 95% FBS group than in the 10% FBS group, whereas no difference was observed between the Time 0 and the 95% FBS groups (n = 24). No cartilage pellets formed at all in the 100% FBS group. Conclusion Synovial MSCs cryopreserved in 95% FBS with 5% DMSO maintained their colony formation and chondrogenic abilities to the same levels as observed in the cells before cryopreservation. Synovial MSCs cryopreserved in 100% FBS lost their colony formation and chondrogenic abilities. Electronic supplementary material The online version of this article (10.1186/s12891-019-2700-3) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Ryota Fujisawa
- Center for Stem Cell and Regenerative Medicine, Tokyo Medical and Dental University, 1-5-45 Yushima, Bunkyo-ku, Tokyo, 113-8510, Japan
| | - Mitsuru Mizuno
- Center for Stem Cell and Regenerative Medicine, Tokyo Medical and Dental University, 1-5-45 Yushima, Bunkyo-ku, Tokyo, 113-8510, Japan
| | - Hisako Katano
- Center for Stem Cell and Regenerative Medicine, Tokyo Medical and Dental University, 1-5-45 Yushima, Bunkyo-ku, Tokyo, 113-8510, Japan
| | - Koji Otabe
- Center for Stem Cell and Regenerative Medicine, Tokyo Medical and Dental University, 1-5-45 Yushima, Bunkyo-ku, Tokyo, 113-8510, Japan
| | - Nobutake Ozeki
- Center for Stem Cell and Regenerative Medicine, Tokyo Medical and Dental University, 1-5-45 Yushima, Bunkyo-ku, Tokyo, 113-8510, Japan
| | - Kunikazu Tsuji
- Department of Cartilage Regeneration, Tokyo Medical and Dental University, Tokyo, Japan
| | - Hideyuki Koga
- Department of Joint Surgery and Sports Medicine, Tokyo Medical and Dental University, Tokyo, Japan
| | - Ichiro Sekiya
- Center for Stem Cell and Regenerative Medicine, Tokyo Medical and Dental University, 1-5-45 Yushima, Bunkyo-ku, Tokyo, 113-8510, Japan.
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Nakamura K, Tsuji K, Mizuno M, Koga H, Muneta T, Sekiya I. Initial cell plating density affects properties of human primary synovial mesenchymal stem cells. J Orthop Res 2019; 37:1358-1367. [PMID: 30035340 PMCID: PMC6585790 DOI: 10.1002/jor.24112] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/15/2018] [Accepted: 07/01/2018] [Indexed: 02/04/2023]
Abstract
Synovial mesenchymal stem cells (MSCs) appear to be an attractive cell source in cartilage and meniscus regeneration because of their high proliferative and chondrogenic potentials. Two methods are used to culture synovial nucleated cells in the preparation of primary synovial MSCs. In one method, the cells are plated at low density to make cell colonies. In the other method, the cells are plated at high density. We investigated the effects of initial cell density on proliferation, surface markers, and multipotentiality, including chondrogenesis in primary synovial MSCs. Human synovium was obtained from the knee joints of patients with osteoarthritis after total knee arthroplasty. Immediately after enzyme digestion, the synovial nucleated cells were plated in densities of 103 , 104 , or 105 cells/60-cm2 dish and cultured for 14 days. Proliferation, surface markers, chondrogenesis, adipogenesis, and calcification were examined in three populations. The cell colonies were distinct in the 103 cells/dish group, faint in the 104 cells/dish group, and obscure in the 105 cells/dish group. The total number of cells/dish was positively related to plating density, whereas the fold increase was negatively related to plating density (n = 13). Among 12 surface markers, a negative relation to plating density was distinct in CD105. The cartilage pellet weight was negatively related to the initial plating density. The oil red-o positive area and alizarin red positive area were positively related to the initial plating density. The initial cell plating density affected the properties of primary synovial MSCs. Synovial nucleated cells proliferated better when plated at low density, and the synovial MSCs obtained by this method contained a high chondrogenic potential. © 2018 The Authors. Journal of Orthopaedic Research® Published by Wiley Periodicals, Inc. J Orthop Res 37:1358-1367, 2019.
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Affiliation(s)
- Kaori Nakamura
- Department of Joint Surgery and Sports MedicineTokyo Medical and Dental UniversityTokyoJapan
| | - Kunikazu Tsuji
- MedicineDepartment of Cartilage RegenerationTokyo Medical and Dental UniversityTokyoJapan
| | - Mitsuru Mizuno
- Center for Stem Cell and Regenerative MedicineTokyo Medical and Dental University1‐5‐45 YushimaBunkyo‐kuTokyo113–8519Japan
| | - Hideyuki Koga
- Department of Joint Surgery and Sports MedicineTokyo Medical and Dental UniversityTokyoJapan
| | - Takeshi Muneta
- Department of Joint Surgery and Sports MedicineTokyo Medical and Dental UniversityTokyoJapan
- National Hospital OrganizationDisaster Medical CenterTokyoJapan
| | - Ichiro Sekiya
- Center for Stem Cell and Regenerative MedicineTokyo Medical and Dental University1‐5‐45 YushimaBunkyo‐kuTokyo113–8519Japan
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Naritomi M, Mizuno M, Katano H, Ozeki N, Otabe K, Komori K, Fujii S, Ichinose S, Tsuji K, Koga H, Muneta T, Sekiya I. Petaloid recombinant peptide enhances in vitro cartilage formation by synovial mesenchymal stem cells. J Orthop Res 2019; 37:1350-1357. [PMID: 29737046 PMCID: PMC6585959 DOI: 10.1002/jor.24042] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/02/2017] [Accepted: 04/27/2018] [Indexed: 02/04/2023]
Abstract
In vitro chondrogenesis of mesenchymal stem cells (MSCs) mimics in vivo chondrogenesis of MSCs. However, the size of the cartilage pellets that can be attained in vitro is limited by current methods; therefore, some modifications are required to obtain larger pellets. Petaloid pieces of recombinant peptide (petaloid RCP) have the advantage of creating spaces between cells in culture. The RCP used here is based on the alpha-1 sequence of human collagen type I and contains 12 Arg-Gly-Asp motifs. We examined the effect and mechanisms of adding petaloid RCP on the in vitro chondrogenesis of human synovial MSCs by culturing 125k cells with or without 0.125 mg petaloid RCP in chondrogenic medium for 21 days. The cartilage pellets were sequentially analyzed by weight, sulfated glycosaminoglycan content, DNA retention, and histology. Petaloid RCP significantly increased the weight of the cartilage pellets: The petaloid RCP group weighed 7.7 ± 1.2 mg (n = 108), whereas the control group weighed 5.3 ± 1.6 mg. Sulfated glycosaminoglycan and DNA contents were significantly higher in the petaloid RCP group than in the control group. Light and transmission electron microscopy images showed that the petaloid RCP formed the framework of the pellet at day 1, the framework was broken by production of cartilage matrix by the synovial MSCs at day 7, and the cartilage pellet grew larger, with diffuse petaloid RCP remaining, at day 21. Therefore, petaloid RCP formed a framework for the pellet, maintained a higher cell number, and promoted in vitro cartilage formation of synovial MSCs. © 2018 The Authors. Journal of Orthopaedic Research® Published by Wiley Periodicals, Inc. J Orthop Res 37:1350-1357, 2019.
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Affiliation(s)
- Mana Naritomi
- Center for Stem Cell and Regenerative MedicineTokyo Medical and Dental University1‐5‐45 Yushima, Bunkyo‐kuTokyo 113‐8510Japan
| | - Mitsuru Mizuno
- Center for Stem Cell and Regenerative MedicineTokyo Medical and Dental University1‐5‐45 Yushima, Bunkyo‐kuTokyo 113‐8510Japan
| | - Hisako Katano
- Center for Stem Cell and Regenerative MedicineTokyo Medical and Dental University1‐5‐45 Yushima, Bunkyo‐kuTokyo 113‐8510Japan
| | - Nobutake Ozeki
- Center for Stem Cell and Regenerative MedicineTokyo Medical and Dental University1‐5‐45 Yushima, Bunkyo‐kuTokyo 113‐8510Japan
| | - Koji Otabe
- Center for Stem Cell and Regenerative MedicineTokyo Medical and Dental University1‐5‐45 Yushima, Bunkyo‐kuTokyo 113‐8510Japan
| | - Keiichiro Komori
- Center for Stem Cell and Regenerative MedicineTokyo Medical and Dental University1‐5‐45 Yushima, Bunkyo‐kuTokyo 113‐8510Japan
| | - Shizuka Fujii
- Center for Stem Cell and Regenerative MedicineTokyo Medical and Dental University1‐5‐45 Yushima, Bunkyo‐kuTokyo 113‐8510Japan
| | - Shizuko Ichinose
- Center for Stem Cell and Regenerative MedicineTokyo Medical and Dental University1‐5‐45 Yushima, Bunkyo‐kuTokyo 113‐8510Japan
| | - Kunikazu Tsuji
- Department of Cartilage RegenerationTokyo Medical and Dental UniversityTokyoJapan
| | - Hideyuki Koga
- Department of Joint Surgery and Sports MedicineTokyo Medical and Dental UniversityTokyoJapan
| | - Takeshi Muneta
- Department of Joint Surgery and Sports MedicineTokyo Medical and Dental UniversityTokyoJapan,National Hospital Organization Disaster Medical CenterTokyoJapan
| | - Ichiro Sekiya
- Center for Stem Cell and Regenerative MedicineTokyo Medical and Dental University1‐5‐45 Yushima, Bunkyo‐kuTokyo 113‐8510Japan
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Sasaki A, Mizuno M, Mochizuki M, Sekiya I. Mesenchymal stem cells for cartilage regeneration in dogs. World J Stem Cells 2019; 11:254-269. [PMID: 31171954 PMCID: PMC6545524 DOI: 10.4252/wjsc.v11.i5.254] [Citation(s) in RCA: 26] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/18/2019] [Revised: 03/29/2019] [Accepted: 04/09/2019] [Indexed: 02/06/2023] Open
Abstract
Articular cartilage damage and osteoarthritis (OA) are common orthopedic diseases in both humans and dogs. Once damaged, the articular cartilage seldom undergoes spontaneous repair because of its avascular, aneural, and alymphatic state, and the damage progresses to a chronic and painful situation. Dogs have distinctive characteristics compared to other laboratory animal species in that they share an OA pathology with humans. Dogs can also require treatment for naturally developed OA; therefore, effective treatment methods for OA are desired in veterinary medicine as well as in human medicine. Recently, interest has grown in regenerative medicine that includes the use of mesenchymal stem cells (MSCs). In cartilage repair, MSCs are a promising therapeutic tool due to their self-renewal capacity, ability to differentiate into cartilage, potential for trophic factor production, and capacity for immunomodulation. The MSCs from dogs (canine MSCs; cMSCs) share various characteristics with MSCs from other animal species, but they show some deviations, particularly in their differentiation ability and surface epitope expression. In vivo studies of cMSCs have demonstrated that intraarticular cMSC injection into cartilage lesions results in excellent hyaline cartilage regeneration. In clinical situations, cMSCs have shown great therapeutic effects, including amelioration of pain and lameness in dogs suffering from OA. However, some issues remain, such as a lack of regulations or guidelines and a need for unified methods for the use of cMSCs. This review summarizes what is known about cMSCs, including their in vitro characteristics, their therapeutic effects in cartilage lesion treatment in preclinical in vivo studies, their clinical efficacy for treatment of naturally developed OA in dogs, and the current limitations of cMSC studies.
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Affiliation(s)
- Akari Sasaki
- Laboratory of Veterinary Emergency Medicine, Graduate School of Agricultural and Life Sciences, the University of Tokyo, Bunkyo-ku, Tokyo 113-8657, Japan
| | - Mitsuru Mizuno
- Center for Stem Cell and Regenerative Medicine, Tokyo Medical and Dental University, Bunkyo-ku, Tokyo 113-8519, Japan
| | - Manabu Mochizuki
- Laboratory of Veterinary Emergency Medicine, Graduate School of Agricultural and Life Sciences, the University of Tokyo, Bunkyo-ku, Tokyo 113-8657, Japan
| | - Ichiro Sekiya
- Center for Stem Cell and Regenerative Medicine, Tokyo Medical and Dental University, Bunkyo-ku, Tokyo 113-8519, Japan
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Koseki K, Kawakami E, Kawasaki H, Atsugi T, Nakanishi M, Mizuno M, Naru E, Ebihara T, Amagai M. 360 Assessment of skin barrier function from skin images with topological data analysis. J Invest Dermatol 2019. [DOI: 10.1016/j.jid.2019.03.436] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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Affiliation(s)
- Mitsuru Mizuno
- Mitsuru Mizuno is a professor in the Graduate School of Business at Nihon University, Tokyo
| | - Isaac T. Tabner
- Isaac T. Tabner, CFA, ASIP, is a lecturer in finance in the Stirling Management School at the University of Stirling, Scotland
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Ueno M, Doi A, Mouri H, Mizuno M. How can we predict the possibility of advanced gastric cancer patients to receive third-line chemotherapy in the real-world setting? Ann Oncol 2018. [DOI: 10.1093/annonc/mdy432.025] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
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Onishi Y, Eshita Y, Ji RC, Kobayashi T, Onishi M, Mizuno M, Yoshida J, Kubota N. A robust control system for targeting melanoma by a supermolecular DDMC/paclitaxel complex. Integr Biol (Camb) 2018; 10:549-554. [PMID: 30140840 DOI: 10.1039/c8ib00071a] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A DEAE-dextran-MMA copolymer (DDMC)-paclitaxel (PTX) conjugate was prepared using PTX as the guest and DDMC as the host. The resistance of B16F10 melanoma cells to PTX was confirmed, while the DDMC-PTX conjugate showed excellent anticancer activity that followed the Hill equation. The robustness in the tumor microenvironment of the allosteric system was confirmed via BIBO stability. This feedback control system, explained via a transfer function, was very stable and showed the sustainability of the system via a loop, and it showed superior anti-cancer activity without drug resistance from cancer cells. The block diagram of this signal system in the tumor microenvironment used its loop transfer function G(s) and the dN(s) of the external force. This indicial response is an ideal one without a time lag for the outlet response. The cell death rate of DDMC-PTX is more dependent on the Hill coefficient n than on the Michaelis constant Km. This means that this supermolecular reaction with tubulin follows an "induced fit model".
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Affiliation(s)
- Y Onishi
- Ryujyu Science Corporation, 39-4 Kosora-cho, Seto, Aichi 489-0842, Japan.
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Sasaki A, Mizuno M, Ozeki N, Katano H, Otabe K, Tsuji K, Koga H, Mochizuki M, Sekiya I. Canine mesenchymal stem cells from synovium have a higher chondrogenic potential than those from infrapatellar fat pad, adipose tissue, and bone marrow. PLoS One 2018; 13:e0202922. [PMID: 30138399 PMCID: PMC6107231 DOI: 10.1371/journal.pone.0202922] [Citation(s) in RCA: 50] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2018] [Accepted: 08/10/2018] [Indexed: 01/17/2023] Open
Abstract
Osteoarthritis (OA), a common chronic joint disorder in both humans and canines, is characterized by a progressive loss of articular cartilage. Canines can serve as an animal model of OA for human medicine, and this research can simultaneously establish effective veterinary treatments for canine OA. One attractive treatment that can lead to cartilage regeneration is the use of mesenchymal stem cells (MSCs). However, for canine OA, little information is available regarding the best source of MSCs. The purpose of this study was to identify a promising MSC source for canine cartilage regeneration. We collected synovial, infrapatellar fat pad, inguinal adipose, and bone marrow tissues from six canines and then conducted a donor-matched comparison of the properties of MSCs derived from these four tissues. We examined the surface epitope expression, proliferation capacity, and trilineage differentiation potential of all four populations. Adherent cells derived from all four tissue sources exhibited positivity for CD90 and CD44 and negativity for CD45 and CD11b. The positive rate for CD90 was higher for synovium-derived than for adipose-derived and bone marrow-derived MSCs. Synovium-derived and infrapatellar fat pad-derived MSCs displayed substantial proliferation ability, and all four populations underwent trilineage differentiation. During chondrogenesis, the wet weight was heavier for cartilage pellets derived from synovium MSCs than from the other three sources. The synovium is therefore a promising source for MSCs for canine cartilage regeneration. Our findings provide useful information about canine MSCs that may be applicable to regenerative medicine for treatment of OA.
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Affiliation(s)
- Akari Sasaki
- Center for Stem Cell and Regenerative Medicine, Tokyo Medical and Dental University, Tokyo, Japan
- Department of Veterinary Medical Sciences, the University of Tokyo, Tokyo, Japan
| | - Mitsuru Mizuno
- Center for Stem Cell and Regenerative Medicine, Tokyo Medical and Dental University, Tokyo, Japan
| | - Nobutake Ozeki
- Center for Stem Cell and Regenerative Medicine, Tokyo Medical and Dental University, Tokyo, Japan
| | - Hisako Katano
- Center for Stem Cell and Regenerative Medicine, Tokyo Medical and Dental University, Tokyo, Japan
| | - Koji Otabe
- Center for Stem Cell and Regenerative Medicine, Tokyo Medical and Dental University, Tokyo, Japan
| | - Kunikazu Tsuji
- Department of Cartilage Regeneration, Tokyo Medical and Dental University, Tokyo, Japan
| | - Hideyuki Koga
- Department of Joint Surgery and Sports Medicine, Tokyo Medical and Dental University, Tokyo, Japan
| | - Manabu Mochizuki
- Department of Veterinary Medical Sciences, the University of Tokyo, Tokyo, Japan
| | - Ichiro Sekiya
- Center for Stem Cell and Regenerative Medicine, Tokyo Medical and Dental University, Tokyo, Japan
- * E-mail:
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Abe K, Yano T, Miki T, Tanno M, Kuno A, Sato T, Mizuno M, Miura T. P928MTORC1 inhibition suppresses necroptosis through restoration of autophagic flux by inhibitory phosphorylation of RIP1 in cardiomyocytes. Eur Heart J 2018. [DOI: 10.1093/eurheartj/ehy564.p928] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Affiliation(s)
- K Abe
- Sapporo Medical University, Cardiovascular, Renal and Metabolic Medicine, Sapporo, Japan
| | - T Yano
- Sapporo Medical University, Cardiovascular, Renal and Metabolic Medicine, Sapporo, Japan
| | - T Miki
- Sapporo Medical University, Cardiovascular, Renal and Metabolic Medicine, Sapporo, Japan
| | - M Tanno
- Sapporo Medical University, Cardiovascular, Renal and Metabolic Medicine, Sapporo, Japan
| | - A Kuno
- Sapporo Medical University, Pharmacology, Sapporo, Japan
| | - T Sato
- Sapporo Medical University, Cell Physiology and Signal Transduction, Sapporo, Japan
| | - M Mizuno
- Sapporo Medical University, Cardiovascular, Renal and Metabolic Medicine, Sapporo, Japan
| | - T Miura
- Sapporo Medical University, Cardiovascular, Renal and Metabolic Medicine, Sapporo, Japan
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Katano H, Koga H, Ozeki N, Otabe K, Mizuno M, Tomita M, Muneta T, Sekiya I. Trends in isolated meniscus repair and meniscectomy in Japan, 2011-2016. J Orthop Sci 2018; 23:676-681. [PMID: 29724468 DOI: 10.1016/j.jos.2018.04.003] [Citation(s) in RCA: 38] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/07/2017] [Revised: 03/25/2018] [Accepted: 04/05/2018] [Indexed: 02/07/2023]
Abstract
BACKGROUND Meniscus surgery is the most commonly performed orthopedic surgery, and despite recent emphasis on saving the meniscus, the current status of meniscus surgeries is little known in many countries, including Japan. The National Database of Health Insurance Claims and Specific Health Checkups of Japan and the Statistics of Medical Care Activities in Public Health Insurance track meniscus surgeries through health insurance claims. The National Database provides the numbers for 2014 and 2015, and the Statistics of Medical Care Activities provides the numbers from June 2011 to June 2016. Our aim was to analyze isolated meniscus surgery numbers and meniscus repair ratios by age group based on the National Database and evaluate trends of meniscus repair ratios for the latest six years from the Statistics of Medical Care Activities. METHODS Meniscus surgeries by age group were counted from the National Database for 2014-2015, and meniscus repair ratios (meniscus repairs/meniscus surgeries) were calculated. The numbers were also counted from the Statistics of Medical Care Activities in 2011-2016. For statistical analysis of annual trends of meniscus repair ratios, the Cochran-Armitage trend test was used. Meniscus surgeries with concomitant knee ligament surgeries were excluded. RESULTS According to the National Database, isolated meniscus surgeries totaled 34,966 in 2015, with peak ages of patients in their late teens and 60s. The meniscus repair ratio was 19% in 2014 and 24% in 2015. According to the Statistics of Medical Care Activities, the meniscus repair ratio was 9% in 2011 and significantly increased to 25% in 2016 (p = 0.0008). The ratio also increased significantly in each age group between the early 20s and late 70s. CONCLUSIONS Approximately 35,000 meniscus surgeries are performed in Japan annually, with peak ages in the late teens and 60s. The number of meniscus repairs has increased over the past six years.
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Affiliation(s)
- Hisako Katano
- Center for Stem Cell and Regenerative Medicine, Tokyo Medical and Dental University, Tokyo, Japan
| | - Hideyuki Koga
- Department of Joint Surgery and Sports Medicine, Graduate School, Tokyo, Medical and Dental University, Tokyo, Japan
| | - Nobutake Ozeki
- Center for Stem Cell and Regenerative Medicine, Tokyo Medical and Dental University, Tokyo, Japan
| | - Koji Otabe
- Center for Stem Cell and Regenerative Medicine, Tokyo Medical and Dental University, Tokyo, Japan
| | - Mitsuru Mizuno
- Center for Stem Cell and Regenerative Medicine, Tokyo Medical and Dental University, Tokyo, Japan
| | - Makoto Tomita
- Clinical Research Center, Tokyo Medical and Dental University, Tokyo, Japan
| | - Takeshi Muneta
- Department of Joint Surgery and Sports Medicine, Graduate School, Tokyo, Medical and Dental University, Tokyo, Japan; National Hospital Organization Disaster Medical Center, Tokyo, Japan
| | - Ichiro Sekiya
- Center for Stem Cell and Regenerative Medicine, Tokyo Medical and Dental University, Tokyo, Japan.
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