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The Effect of Selected Flavonoids and Lipoic Acid on Natural and Model Cell Membranes: Langmuir and Microelectrophoretic Methods. Molecules 2023; 28:molecules28031013. [PMID: 36770679 PMCID: PMC9920617 DOI: 10.3390/molecules28031013] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2022] [Revised: 01/11/2023] [Accepted: 01/17/2023] [Indexed: 01/20/2023] Open
Abstract
The influence of kaempferol (K), myricetin (M) and lipoic acid (LA) on the properties of natural erythrocytes, isolated from animal blood and biological membrane models (monolayers and liposomes) made of phosphatidylcholine (PC), cholesterol (CHOL), and sphingomyelin (SM), CHOL in a ratio of 10:9, was investigated. The Langmuir method, Brewster angle microscopy (BAM) and microelectrophoresis were used. The presented results showed that modification of liposomes with kaempferol, myricetin and lipoic acid caused changes in the surface charge density and the isoelectric point value. Comparing the tested systems, several conclusions were made. (1) The isoelectric point for the DPPC:Chol:M (~2.2) had lower pH values compared to lipoic acid (pH~2.5) and kaempferol (pH~2.6). (2) The isoelectric point for the SM-Chol with myricetin (~3.0) had lower pH values compared to kaempferol (pH~3.4) and lipoic acid (pH~4.7). (3) The surface charge density values for the DPPC:Chol:M system in the range of pH 2-9 showed values from 0.2 to -2.5 × 10-2 C m-2. Meanwhile, for the DPPC:Chol:K and DPPC:Chol:LA systems, these values were higher at pH~2 (0.7 × 10-2 C m-2 and 0.8 × 10-2 C m-2) and lower at pH~9 (-2.1 × 10-2 C m-2 and -1.8 × 10-2 C m-2), respectively. (4) The surface charge density values for the SM:Chol:M system in the range of pH 2-9 showed values from 0.5 to -2.3 × 10-2 C m-2. Meanwhile, for the DPPC:Chol:K and DPPC:Chol:LA systems, these values were higher at pH~2 (0.8 × 10-2 C m-2), and lower at pH~9 (-1.0 × 10-2 C m-2 and -1.8 × 10-2 C m-2), respectively. (5) The surface charge density values for the erythrocytes with myricetin in the range of pH 2-9 showed values from 1.0 to -1.8 × 10-2 C m-2. Meanwhile, for the erythrocytes:K and erythrocytes:LA systems, these values, at pH~2, were 1.3 × 10-2 C m-2 and 0.8 × 10-2 C m-2 and, at pH~9, -1.7 × 10-2 C m-2 and -1.0 × 10-2 C m-2, respectively.
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Ude CC, Miskon A, Idrus RBH, Abu Bakar MB. Application of stem cells in tissue engineering for defense medicine. Mil Med Res 2018; 5:7. [PMID: 29502528 PMCID: PMC6389246 DOI: 10.1186/s40779-018-0154-9] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/04/2017] [Accepted: 02/07/2018] [Indexed: 01/08/2023] Open
Abstract
The dynamic nature of modern warfare, including threats and injuries faced by soldiers, necessitates the development of countermeasures that address a wide variety of injuries. Tissue engineering has emerged as a field with the potential to provide contemporary solutions. In this review, discussions focus on the applications of stem cells in tissue engineering to address health risks frequently faced by combatants at war. Human development depends intimately on stem cells, the mysterious precursor to every kind of cell in the body that, with proper instruction, can grow and differentiate into any new tissue or organ. Recent reports have suggested the greater therapeutic effects of the anti-inflammatory, trophic, paracrine and immune-modulatory functions associated with these cells, which induce them to restore normal healing and tissue regeneration by modulating immune reactions, regulating inflammation, and suppressing fibrosis. Therefore, the use of stem cells holds significant promise for the treatment of many battlefield injuries and their complications. These applications include the treatment of injuries to the skin, sensory organs, nervous system tissues, the musculoskeletal system, circulatory/pulmonary tissues and genitals/testicles and of acute radiation syndrome and the development of novel biosensors. The new research developments in these areas suggest that solutions are being developed to reduce critical consequences of wounds and exposures suffered in warfare. Current military applications of stem cell-based therapies are already saving the lives of soldiers who would have died in previous conflicts. Injuries that would have resulted in deaths previously now result in wounds today; similarly, today's permanent wounds may be reduced to tomorrow's bad memories with further advances in stem cell-based therapies.
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Affiliation(s)
- Chinedu Cletus Ude
- Bio-artifical Organ and Regenerative Medicine Unit, National Defence University of Malaysia, Sungai Besi Camp, 57000, Kuala Lumpur, Malaysia
| | - Azizi Miskon
- Bio-artifical Organ and Regenerative Medicine Unit, National Defence University of Malaysia, Sungai Besi Camp, 57000, Kuala Lumpur, Malaysia.
| | - Ruszymah Bt Hj Idrus
- Department of Physiology, Pre-clinical Block, National University of Malaysia Medical Centre, Jalan Yaacob Latif, Bandar Tun Razak, 56000, Kuala Lumpur, Malaysia
| | - Muhamad Bin Abu Bakar
- Bio-artifical Organ and Regenerative Medicine Unit, National Defence University of Malaysia, Sungai Besi Camp, 57000, Kuala Lumpur, Malaysia
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Cappellino LA, Kratje RB, Etcheverrigaray M, Prieto CC. Strategy for erythroid differentiation in ex vivo cultures: Lentiviral genetic modification of human hematopoietic stem cells with erythropoietin gene. J Biosci Bioeng 2017; 124:591-598. [PMID: 28688754 DOI: 10.1016/j.jbiosc.2017.06.005] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2016] [Revised: 06/02/2017] [Accepted: 06/15/2017] [Indexed: 01/04/2023]
Abstract
If cultured in appropriate conditions, such as supplementing culture media with costly cytokines and growth factors, hematopoietic stem/progenitor cells (HSPCs) from different origins have shown to be an adequate source of erythroid cells. This requirement turns erythroid cells production into a complicated process to be scaled-up for future applications. The aim of our work was to genetically modify HSPCs with human erythropoietin (hEPO) sequence by lentiviral transgenesis in order for cells to secrete the hormone into the culture medium. Initially, we evaluated erythroid differentiation in colony forming units (CFU) assays and further analyzed cell expansion and erythroid differentiation throughout time in suspension cultures by flow cytometry and May-Grünwald-Giemsa staining. Additionally, we studied hEPO production and its isoforms profile. The different assessment approaches demonstrated erythroid differentiation, which was attributed to the hEPO secreted by the HSPCs. Our data demonstrate that it is possible to develop culture systems in which recombinant HSPCs are self-suppliers of hEPO. This feature makes our strategy attractive to be applied in biotechnological production processes of erythroid cells that are currently under development.
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Affiliation(s)
- Luisina A Cappellino
- UNL, CONICET, Cell Culture Laboratory, FBCB, Edificio FBCB-Ciudad Universitaria UNL, C.C. 242. (S3000ZAA), Santa Fe, Argentina
| | - Ricardo B Kratje
- UNL, CONICET, Cell Culture Laboratory, FBCB, Edificio FBCB-Ciudad Universitaria UNL, C.C. 242. (S3000ZAA), Santa Fe, Argentina
| | - Marina Etcheverrigaray
- UNL, CONICET, Cell Culture Laboratory, FBCB, Edificio FBCB-Ciudad Universitaria UNL, C.C. 242. (S3000ZAA), Santa Fe, Argentina
| | - Claudio C Prieto
- UNL, Cell Culture Laboratory, FBCB, Edificio FBCB-Ciudad Universitaria UNL, C.C. 242. (S3000ZAA), Santa Fe, Argentina.
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Liu DX, Liu J, Zhang F, Zhang QY, Xie M, Zhu ZQ. Randomized Controlled Study on Safety and Feasibility of Transfusion Trigger Score of Emergency Operations. Chin Med J (Engl) 2016; 128:1801-8. [PMID: 26112723 PMCID: PMC4733710 DOI: 10.4103/0366-6999.159357] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022] Open
Abstract
Background: Due to the floating of the guideline, there is no evidence-based evaluation index on when to start the blood transfusion for patients with hemoglobin (Hb) level between 7 and 10 g/dl. As a result, the trigger point of blood transfusion may be different in the emergency use of the existing transfusion guidelines. The present study was designed to evaluate whether the scheme can be safely and effectively used for emergency patients, so as to be supported by multicenter and large sample data in the future. Methods: From June 2013 to June 2014, patients were randomly divided into the experimental group (Peri-operative Transfusion Trigger Score of Emergency [POTTS-E] group) and the control group (control group). The between-group differences in the patients’ demography and baseline information, mortality and blood transfusion-related complications, heart rate, resting arterial pressure, body temperature, and Hb values were compared. The consistency of red blood cell (RBC) transfusion standards of the two groups of patients with the current blood transfusion guideline, namely the compliance of the guidelines, utilization rate, and per-capita consumption of autologous RBC were analyzed. Results: During the study period, a total of 72 patients were recorded, and 65 of them met the inclusion criteria, which included 33 males and 32 females with a mean age of (34.8 ± 14.6) years. 50 underwent abdomen surgery, 4 underwent chest surgery, 11 underwent arms and legs surgery. There was no statistical difference between the two groups for demography and baseline information. There was also no statistical differences between the two groups in anesthesia time, intraoperative rehydration, staying time in postanesthetic care unit, emergency hospitalization, postoperative 72 h Acute Physiologic Assessment and Chronic Health Evaluation II scores, blood transfusion-related complications and mortality. Only the POTTS-E group on the 1st postoperative day Hb was lower than group control, P < 0.05. POTTS-E group was totally (100%) conformed to the requirements of the transfusion guideline to RBC infusion, which was higher than that of the control group (81.25%), P < 0.01. There were no statistical differences in utilization rates of autologous blood of the two groups; the utilization rates of allogeneic RBC, total allogeneic RBC and total RBC were 48.48%, 51.5%, and 75.7% in POTTS-E group, which were lower than those of the control group (84.3%, 84.3%, and 96.8%) P < 0.05 or P < 0.01. Per capita consumption of intraoperative allogeneic RBC, total allogeneic RBC and total RBC were 0 (0, 3.0), 2.0 (0, 4.0), and 3.1 (0.81, 6.0) in POTTS-E groups were all lower than those of control group (4.0 [2.0, 4.0], 4.0 [2.0, 6.0] and 5.8 [2.7, 8.2]), P < 0.05 or P < 0.001. Conclusions: Peri-operative Transfusion Trigger Score-E evaluation scheme is used to guide the application of RBC. There are no differences in the recent prognosis of patients with the traditional transfusion guidelines. This scheme is safe; Compared with doctor experience-based subjective assessment, the scoring scheme was closer to patient physiological needs for transfusion and more reasonable; Utilization rate and the per capita consumption of RBC are obviously declined, which has clinical significance and is feasible. Based on the abovementioned three points, POTTS-E scores scheme is safe, reasonable, and practicable and has the value for carrying out multicenter and large sample clinical researches.
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Affiliation(s)
| | | | | | | | | | - Zhao-Qiong Zhu
- Department of Anesthesiology, Affiliated Hospital of Zunyi Medical College, Zunyi, Guizhou 563000, China
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Dalm D, Galaz-Montoya JG, Miller JL, Grushin K, Villalobos A, Koyfman AY, Schmid MF, Stoilova-McPhie S. Dimeric Organization of Blood Coagulation Factor VIII bound to Lipid Nanotubes. Sci Rep 2015; 5:11212. [PMID: 26082135 PMCID: PMC4469981 DOI: 10.1038/srep11212] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2015] [Accepted: 05/05/2015] [Indexed: 11/09/2022] Open
Abstract
Membrane-bound Factor VIII (FVIII) has a critical function in blood coagulation as the pro-cofactor to the serine-protease Factor IXa (FIXa) in the FVIIIa-FIXa complex assembled on the activated platelet membrane. Defects or deficiency of FVIII cause Hemophilia A, a mild to severe bleeding disorder. Despite existing crystal structures for FVIII, its membrane-bound organization has not been resolved. Here we present the dimeric FVIII membrane-bound structure when bound to lipid nanotubes, as determined by cryo-electron microscopy. By combining the structural information obtained from helical reconstruction and single particle subtomogram averaging at intermediate resolution (15-20 Å), we show unambiguously that FVIII forms dimers on lipid nanotubes. We also demonstrate that the organization of the FVIII membrane-bound domains is consistently different from the crystal structure in solution. The presented results are a critical step towards understanding the mechanism of the FVIIIa-FIXa complex assembly on the activated platelet surface in the propagation phase of blood coagulation.
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Affiliation(s)
- Daniela Dalm
- Department of Neuroscience and Cell Biology, University of Texas Medical Branch, Galveston, TX 77555, USA
| | - Jesus G Galaz-Montoya
- 1] Department of Biochemistry and Molecular Biology, Baylor College of Medicine, Houston, TX 77030, USA [2] National Center for Macromolecular Imaging, Baylor College of Medicine, Houston, TX 77030, USA
| | - Jaimy L Miller
- Department of Neuroscience and Cell Biology, University of Texas Medical Branch, Galveston, TX 77555, USA
| | - Kirill Grushin
- Department of Neuroscience and Cell Biology, University of Texas Medical Branch, Galveston, TX 77555, USA
| | - Alex Villalobos
- School of Medicine, University of Texas Medical Branch, Galveston, TX 77555, USA
| | - Alexey Y Koyfman
- Department of Pharmacology and Toxicology, University of Texas Medical Branch, Galveston, TX 77555, USA
| | - Michael F Schmid
- 1] Department of Biochemistry and Molecular Biology, Baylor College of Medicine, Houston, TX 77030, USA [2] National Center for Macromolecular Imaging, Baylor College of Medicine, Houston, TX 77030, USA
| | - Svetla Stoilova-McPhie
- 1] Department of Neuroscience and Cell Biology, University of Texas Medical Branch, Galveston, TX 77555, USA [2] Sealy Center for Structural Biology and Molecular Biophysics, University of Texas Medical Branch, Galveston, TX 77555, USA
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Samet I, Villareal MO, Motojima H, Han J, Sayadi S, Isoda H. Olive leaf components apigenin 7-glucoside and luteolin 7-glucoside direct human hematopoietic stem cell differentiation towards erythroid lineage. Differentiation 2015; 89:146-55. [DOI: 10.1016/j.diff.2015.07.001] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2015] [Revised: 06/07/2015] [Accepted: 07/07/2015] [Indexed: 02/02/2023]
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Närhi MO, Nordström K. Regulation of cell-based therapeutic products intended for human applications in the EU. Regen Med 2014; 9:327-51. [PMID: 24935044 DOI: 10.2217/rme.14.10] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022] Open
Abstract
AIMS Recent developments in the field of cell-based therapeutic products (CBTPs) have forced the EU to revise its legislation on therapeutic products by enacting several new legal instruments. In this study, we investigate how CBTPs are regulated and what determines their regulatory classification. Furthermore, we compare the regulatory burden between CBTPs in different product categories. MATERIALS & METHODS Product categories covering CBTPs were identified and characteristics critical for the regulatory classification of a CBTP were determined in each category. The effect of the critical characteristics on the classification was evaluated by constructing a decision tree that covers all possible combinations of the critical characteristics. Differences in the regulatory burden between CBTPs were evaluated by comparing regulations crucial for placing a therapeutic product on the EU market between the product categories. RESULTS Regulation of CBTPs has been divided between the main product categories of the EU legal framework for therapeutic products on the basis of the characteristics of the cells that the CBTPs contain. The regulatory burden is lowest for CBTPs regulated as blood, cells or tissues, and highest for CBTPs regulated as medicinal products. CONCLUSION CBTPs exist in all product categories of the EU legal framework for therapeutic products. However, the current framework does not cover all possible CBTPs. Furthermore, our results indicate that the regulatory burden of a CBTP is related to the risk it may pose to the health and safety of recipients.
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Affiliation(s)
- Marko O Närhi
- Department of Biotechnology & Chemical Technology, Aalto University, School of Chemical Technology, Espoo, Finland
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Kouhkan F, Hafizi M, Mobarra N, Mossahebi-Mohammadi M, Mohammadi S, Behmanesh M, Soufi Zomorrod M, Alizadeh S, Lahmy R, Daliri M, Soleimani M. miRNAs: a new method for erythroid differentiation of hematopoietic stem cells without the presence of growth factors. Appl Biochem Biotechnol 2013; 172:2055-69. [PMID: 24326679 DOI: 10.1007/s12010-013-0633-0] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2013] [Accepted: 10/30/2013] [Indexed: 12/23/2022]
Abstract
Micro RNAs (miRNAs) are a novel class of non-coding regulatory RNA molecules that contribute to post-transcriptional gene regulation. Recent studies have demonstrated that specific miRNAs such as miR-150, miR-154, and miR-451 have key roles in erythropoiesis. To date, stimulatory cytokines are considered as unique effectors for in vitro differentiation of HSCs to erythropoietic lineage. However, the use of these factors is not cost-effective for clinical applications and therapeutic strategies. Here, we present a novel and cost-effective strategy in which miRNAs expression modulation promotes erythroid differentiation in HSCs in the absence of any extrinsic factors. Thus, CD133(+) hematopoietic stem cells purified from human umbilical cord blood were treated with pre-miR-451 containing lentiviruses, anti-miR-150 and anti-miR-154 in the absence of growth factors and cytokines. Obtained results indicated that miR-451 upregulation and miR-150 downregulation have positive effect on GATA-1, FOG-1, and EKLF, CD71 and CD235a genes expression and induce hemoglobinization efficiently. However, downregulation of miR-154 had no effect on erythropoiesis indexes compared to that observed in the control group. In conclusion, the data presented here for the first time demonstrate that expression modulation of miR-451 and miR-150 could be an efficient alternative to stimulatory cytokines for CD133(+) differentiation into erythroid lineage. Modulation of erythropoiesis in stem cells via miRNA holds promising potential for vascular tissue engineering and regenerative medicine applications.
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Affiliation(s)
- Fatemeh Kouhkan
- Department of Molecular Biology and Genetic Engineering, Stem Cell Technology Research Center, Tehran, Iran
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Ex vivo erythrocyte generation and blood doping. BLOOD TRANSFUSION = TRASFUSIONE DEL SANGUE 2012; 11:161-3. [PMID: 23114519 DOI: 10.2450/2012.0028-12] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Subscribe] [Scholar Register] [Received: 02/20/2012] [Accepted: 03/28/2012] [Indexed: 11/21/2022]
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