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Lin J, Song T, Liu Z, Yang D, Xiang R, Hua W, Wan H. Effects of biodegradable biomedical porous MnO 2 nanoparticles on blood components and functions. Colloids Surf B Biointerfaces 2022; 217:112667. [PMID: 35816881 DOI: 10.1016/j.colsurfb.2022.112667] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2021] [Revised: 04/21/2022] [Accepted: 06/26/2022] [Indexed: 10/17/2022]
Abstract
In recent years, manganese dioxide (MnO2) nanoparticles with unique physicochemical properties have been widely used in many biomedical fields, such as biosensors, contrast agents, tumor therapy, and drug delivery. From these applications, MnO2 nanoparticles have great clinical translation potential. However, by contrast, the in vitro and in vivo biosafety of MnO2 nanoparticles have been deeply and thoroughly clarified for the clinical translation, which hinders their clinical applications. In this work, we deeply investigated the blood safety of MnO2 nanoparticles by conducting a series of in vitro and in vivo experiments. These included the effects of MnO2 nanoparticles on morphology of red blood cells, activation of platelets, coagulation functions, and toxicity of key organs. The obtained results show that these effects displayed a concentration-dependent manner of MnO2 nanoparticles. Different safe concentration ranges could be found in the different experimental index. This study provides important guidance for the specific biomedical applications of MnO2 nanoparticles, greatly accelerating their laboratory development and clinical translation.
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Affiliation(s)
- Jiansheng Lin
- Department of Anatomy, Hunan University of Chinese Medicine, Changsha 410208, China
| | - Ting Song
- Department of Biomedical Engineering, Jinan University, Guangzhou 510632, China
| | - Zonghua Liu
- Department of Biomedical Engineering, Jinan University, Guangzhou 510632, China
| | - Deguang Yang
- Department of Cardiology, The Fifth Affiliated Hospital of Jinan University (Heyuan Shenhe People's Hospital), Jinan University, Heyuan 517475, China
| | - Rong Xiang
- Pediatrics Department of Changsha Hospital for Maternal & Child Health Care, Changsha 410007, China.
| | - Wenxi Hua
- Department of Pathology, School of Basic Medical Sciences, Fujian Medical University/Institute of Oncology, Fuzhou 350004, China.
| | - Huaibin Wan
- Department of Cardiology, The Fifth Affiliated Hospital of Jinan University (Heyuan Shenhe People's Hospital), Jinan University, Heyuan 517475, China.
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2
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Flaherty S, Strauch P, Maktabi M, Pybus BS, Reichard G, Walker LA, Rochford R. Mechanisms of 8-aminoquinoline induced haemolytic toxicity in a G6PDd humanized mouse model. J Cell Mol Med 2022; 26:3675-3686. [PMID: 35665597 PMCID: PMC9258708 DOI: 10.1111/jcmm.17362] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2022] [Revised: 03/29/2022] [Accepted: 04/05/2022] [Indexed: 11/29/2022] Open
Abstract
Primaquine (PQ) and Tafenoquine (TQ) are clinically important 8‐aminoquinolines (8‐AQ) used for radical cure treatment of P. vivax infection, known to target hepatic hypnozoites. 8‐AQs can trigger haemolytic anaemia in individuals with glucose‐6‐phosphate dehydrogenase deficiency (G6PDd), yet the mechanisms of haemolytic toxicity remain unknown. To address this issue, we used a humanized mouse model known to predict haemolytic toxicity responses in G6PDd human red blood cells (huRBCs). To evaluate the markers of eryptosis, huRBCs were isolated from mice 24–48 h post‐treatment and analysed for effects on phosphatidylserine (PS), intracellular reactive oxygen species (ROS) and autofluorescence. Urinalysis was performed to evaluate the occurrence of intravascular and extravascular haemolysis. Spleen and liver tissue harvested at 24 h and 5–7 days post‐treatment were stained for the presence of CD169+ macrophages, F4/80+ macrophages, Ter119+ mouse RBCs, glycophorin A+ huRBCs and murine reticulocytes (muRetics). G6PDd‐huRBCs from PQ/TQ treated mice showed increased markers for eryptosis as early as 24 h post‐treatment. This coincided with an early rise in levels of muRetics. Urinalysis revealed concurrent intravascular and extravascular haemolysis in response to PQ/TQ. Splenic CD169+ macrophages, present in all groups at day 1 post‐dosing were eliminated by days 5–7 in PQ/TQ treated mice only, while liver F4/80 macrophages and iron deposits increased. Collectively, our data suggest 8‐AQ treated G6PDd‐huRBCs have early physiological responses to treatment, including increased markers for eryptosis indicative of oxidative stress, resulting in extramedullary haematopoiesis and loss of splenic CD169+ macrophages, prompting the liver to act as the primary site of clearance.
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Affiliation(s)
- Siobhan Flaherty
- Department of Immunology and Microbiology, The University of Colorado School of Medicine, Aurora, Colorado, USA
| | - Pamela Strauch
- Department of Immunology and Microbiology, The University of Colorado School of Medicine, Aurora, Colorado, USA
| | - Mahdi Maktabi
- Department of Immunology and Microbiology, The University of Colorado School of Medicine, Aurora, Colorado, USA
| | - Brandon S Pybus
- Division of Experimental Therapeutics, Walter Reed Army Institute of Research, Silver Spring, Maryland, USA
| | - Gregory Reichard
- Department of Drug Discovery, Experimental Therapeutics Branch, Walter Reed Army Institute of Research, Silver Spring, Maryland, USA
| | - Larry A Walker
- National Center for Natural Products Research and Department of Biomolecular Sciences, School of Pharmacy, The University of Mississippi, University, Mississippi, USA
| | - Rosemary Rochford
- Department of Immunology and Microbiology, The University of Colorado School of Medicine, Aurora, Colorado, USA
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3
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Lin J, Huang L, Ou H, Chen A, Xiang R, Liu Z. Effects of ZIF-8 MOFs on structure and function of blood components. RSC Adv 2021; 11:21414-21425. [PMID: 35478779 PMCID: PMC9034149 DOI: 10.1039/d1ra02873a] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2021] [Accepted: 06/04/2021] [Indexed: 12/15/2022] Open
Abstract
ZIF-8 MOFs, with their large specific surface area and void volume, unique biodegradability and pH sensitivity, and significant loading capacity, have been widely used as carrier materials for bioactive molecules such as drugs, vaccines and genes.
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Affiliation(s)
- Jiansheng Lin
- Department of Anatomy
- Hunan University of Chinese Medicine
- Changsha
- China
| | - Linghong Huang
- Department of Biomedical Engineering
- Jinan University
- Guangzhou
- China
| | - Haibo Ou
- Department of Anatomy
- Hunan University of Chinese Medicine
- Changsha
- China
| | - An Chen
- Department of Anatomy
- Hunan University of Chinese Medicine
- Changsha
- China
| | - Rong Xiang
- Pediatrics Department of Changsha Hospital for Maternal & Child Health Care
- Changsha 410007
- China
| | - Zonghua Liu
- Department of Biomedical Engineering
- Jinan University
- Guangzhou
- China
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4
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Szczesny-Malysiak E, Dybas J, Blat A, Bulat K, Kus K, Kaczmarska M, Wajda A, Malek K, Chlopicki S, Marzec KM. Irreversible alterations in the hemoglobin structure affect oxygen binding in human packed red blood cells. BIOCHIMICA ET BIOPHYSICA ACTA-MOLECULAR CELL RESEARCH 2020; 1867:118803. [PMID: 32738251 DOI: 10.1016/j.bbamcr.2020.118803] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/20/2020] [Revised: 07/02/2020] [Accepted: 07/24/2020] [Indexed: 01/06/2023]
Abstract
The ability of hemoglobin (Hb) to transport respiratory gases is directly linked to its quaternary structure properties and reversible changes between T (tense) and R (relax) state. In this study we demonstrated that packed red blood cells (pRBCs) storage resulted in a gradual increase in the irreversible changes in the secondary and quaternary structures of Hb, with subsequent impairment of the T↔R transition. Such alteration was associated with the presence of irreversibly settled in the relaxed form, quaternary structure of Hb, which we termed R'. On the secondary structure level, disordered protein organization involved formation of β-sheets and a decrease in α-helices related to the aggregation process stabilized by strong intermolecular hydrogen bonding. Compensatory changes in RBCs metabolism launched to preserve reductive microenvironment were disclosed as an activation of nicotinamide adenine dinucleotide phosphate (NADPH) production and increased reduced to oxidized glutathione (GSH/GSSG) ratio. For the first time we showed the relationship between secondary structure changes and the occurrence of newly discovered R', which through an artificial increase in oxyhemoglobin level altered Hb ability to bind and release oxygen.
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Affiliation(s)
- Ewa Szczesny-Malysiak
- Jagiellonian Center for Experimental Therapeutics, Jagiellonian University, 14 Bobrzynskiego St., 30-348 Krakow, Poland.
| | - Jakub Dybas
- Jagiellonian Center for Experimental Therapeutics, Jagiellonian University, 14 Bobrzynskiego St., 30-348 Krakow, Poland.
| | - Aneta Blat
- Jagiellonian Center for Experimental Therapeutics, Jagiellonian University, 14 Bobrzynskiego St., 30-348 Krakow, Poland; Faculty of Chemistry, Jagiellonian University, 2 Gronostajowa Str., 30-387 Krakow, Poland.
| | - Katarzyna Bulat
- Jagiellonian Center for Experimental Therapeutics, Jagiellonian University, 14 Bobrzynskiego St., 30-348 Krakow, Poland.
| | - Kamil Kus
- Jagiellonian Center for Experimental Therapeutics, Jagiellonian University, 14 Bobrzynskiego St., 30-348 Krakow, Poland.
| | - Magdalena Kaczmarska
- Jagiellonian Center for Experimental Therapeutics, Jagiellonian University, 14 Bobrzynskiego St., 30-348 Krakow, Poland.
| | - Aleksandra Wajda
- Jagiellonian Center for Experimental Therapeutics, Jagiellonian University, 14 Bobrzynskiego St., 30-348 Krakow, Poland; Faculty of Materials Science and Ceramics, AGH University of Science and Technology, Mickiewicza 30, 30-059 Krakow, Poland.
| | - Kamilla Malek
- Faculty of Chemistry, Jagiellonian University, 2 Gronostajowa Str., 30-387 Krakow, Poland.
| | - Stefan Chlopicki
- Jagiellonian Center for Experimental Therapeutics, Jagiellonian University, 14 Bobrzynskiego St., 30-348 Krakow, Poland; Chair of Pharmacology, Jagiellonian University Medical College, Grzegorzecka 16, 31-531 Krakow, Poland.
| | - Katarzyna M Marzec
- Jagiellonian Center for Experimental Therapeutics, Jagiellonian University, 14 Bobrzynskiego St., 30-348 Krakow, Poland.
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5
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Nakagami Y, Uchino K, Okada H, Suzuki K, Enomoto M, Mizuno S, Yamamoto H, Hanamura I, Nakayama T, Tani H, Takami A. Potential role of Howell-Jolly bodies in identifying functional hyposplenism: a prospective single-institute study. Int J Hematol 2020; 112:544-552. [PMID: 32572828 DOI: 10.1007/s12185-020-02925-7] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2020] [Revised: 06/15/2020] [Accepted: 06/16/2020] [Indexed: 11/29/2022]
Abstract
Although patients with cancer and immunosuppression are at a risk of functional hyposplenism, how to detect it promptly remains unclear. Since hyposplenism allows erythrocytes with nuclear remnants (Howell-Jolly bodies [HJBs]) to appear in the peripheral blood, HJB detection by a routine microscopic examination may help identify patients with functional hyposplenism. This prospective study was thus performed to determine the underlying diseases in patients who presented with HJBs. Of 100 consecutive patients presenting with HJBs, 73 had a history of splenectomy. The remaining 27 had hematologic cancer (n = 6, 22%), non-hematologic cancer (n = 8, 30%), hepatic disorders (n = 4, 15%), premature neonates (n = 3, 11%), hemolytic anemia (n = 2, 7%), autoimmune disorders (n = 2, 7%) and miscellaneous diseases (n = 2, 7%), and their prior treatments included chemotherapy (n = 8, 30%), steroids (n = 7, 26%) and molecular-targeted therapy (n = 3, 11%). Among the 27 patients, 22 had computed tomography scans available: 3 (14%) had underlying diseases in the spleen, and the remaining 19 (86%) were all found to have a decreased splenic volume, including 11 (50%) with more than 50% of the ideal value. The present findings suggest that HJB detection identifies patients with potentially functional hyposplenism who should receive appropriate interventional treatment, such as vaccination and prophylactic antibiotics.
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Affiliation(s)
- Yuya Nakagami
- Department of Internal Medicine, Division of Hematology, Aichi Medical University School of Medicine, 1-1 Yazakokarimata, Nagakute, 480-1195, Japan.,Department of Clinical Laboratory, Aichi Medical University Hospital, Nagakute, Aichi, Japan
| | - Kaori Uchino
- Department of Internal Medicine, Division of Hematology, Aichi Medical University School of Medicine, 1-1 Yazakokarimata, Nagakute, 480-1195, Japan.,Hematopoietic Cell Transplantation Center, Aichi Medical University Hospital, Nagakute, Aichi, Japan
| | - Hiroaki Okada
- Department of Radiology, Aichi Medical University School of Medicine, Nagakute, Aichi, Japan
| | - Kojiro Suzuki
- Department of Radiology, Aichi Medical University School of Medicine, Nagakute, Aichi, Japan
| | - Megumi Enomoto
- Department of Clinical Laboratory, Aichi Medical University Hospital, Nagakute, Aichi, Japan
| | - Shohei Mizuno
- Department of Internal Medicine, Division of Hematology, Aichi Medical University School of Medicine, 1-1 Yazakokarimata, Nagakute, 480-1195, Japan.,Hematopoietic Cell Transplantation Center, Aichi Medical University Hospital, Nagakute, Aichi, Japan
| | - Hidesuke Yamamoto
- Department of Internal Medicine, Division of Hematology, Aichi Medical University School of Medicine, 1-1 Yazakokarimata, Nagakute, 480-1195, Japan.,Hematopoietic Cell Transplantation Center, Aichi Medical University Hospital, Nagakute, Aichi, Japan
| | - Ichiro Hanamura
- Department of Internal Medicine, Division of Hematology, Aichi Medical University School of Medicine, 1-1 Yazakokarimata, Nagakute, 480-1195, Japan.,Hematopoietic Cell Transplantation Center, Aichi Medical University Hospital, Nagakute, Aichi, Japan
| | - Takayuki Nakayama
- Department of Internal Medicine, Division of Hematology, Aichi Medical University School of Medicine, 1-1 Yazakokarimata, Nagakute, 480-1195, Japan.,Department of Clinical Laboratory, Aichi Medical University Hospital, Nagakute, Aichi, Japan
| | - Hiroya Tani
- Department of Clinical Laboratory, Aichi Medical University Hospital, Nagakute, Aichi, Japan
| | - Akiyoshi Takami
- Department of Internal Medicine, Division of Hematology, Aichi Medical University School of Medicine, 1-1 Yazakokarimata, Nagakute, 480-1195, Japan. .,Hematopoietic Cell Transplantation Center, Aichi Medical University Hospital, Nagakute, Aichi, Japan.
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6
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Bulat K, Dybas J, Kaczmarska M, Rygula A, Jasztal A, Szczesny-Malysiak E, Baranska M, Wood BR, Marzec KM. Multimodal detection and analysis of a new type of advanced Heinz body-like aggregate (AHBA) and cytoskeleton deformation in human RBCs. Analyst 2020; 145:1749-1758. [PMID: 31913373 DOI: 10.1039/c9an01707k] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A new type of aggregate, formed in human red blood cells (RBCs) in response to glutaraldehyde treatment, was discovered and analyzed with the classical and advanced biomolecular imaging techniques. Advanced Heinz body-like aggregates (AHBA) formed in a single human RBC are characterized by a higher level of hemoglobin (Hb) degradation compared to typical Heinz bodies, which consist of hemichromes. The complete destruction of the porphyrin structure of Hb and the aggregation of the degraded proteins in the presence of Fe3+ ions are observed. The presence of such aggregated, highly degraded proteins inside RBCs, without cell membrane destruction, has been never reported before. For the first time the spatial differentiation of two kinds of protein mixtures inside a single RBC, with different phenylalanine (Phe) conformations, is visualized. The non-resonant Raman spectra of altered RBCs with AHBA are characterized by the presence of a strong band located at 1037 cm-1, which confirms that glutaraldehyde interacts strongly with Phe. The shape-shifting of RBCs from a biconcave disk to a spherical structure and sinking of AHBA to the bottom of the cell are observed. Results reveal that the presence of AHBA should be considered when fixing RBCs and indicate the analytical potential of Raman spectroscopy, atomic force microscopy and scanning near-field optical microscopy in AHBA detection and analysis.
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Affiliation(s)
- Katarzyna Bulat
- Jagiellonian Center for Experimental Therapeutics, Jagiellonian University, 14 Bobrzynskiego Str., 30-348 Krakow, Poland.
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7
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Harr KE, Cunningham FL, Pritsos CA, Pritsos KL, Muthumalage T, Dorr BS, Horak KE, Hanson-Dorr KC, Dean KM, Cacela D, McFadden AK, Link JE, Healy KA, Tuttle P, Bursian SJ. Weathered MC252 crude oil-induced anemia and abnormal erythroid morphology in double-crested cormorants (Phalacrocorax auritus) with light microscopic and ultrastructural description of Heinz bodies. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2017; 146:29-39. [PMID: 28734789 DOI: 10.1016/j.ecoenv.2017.07.030] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/15/2016] [Revised: 07/11/2017] [Accepted: 07/14/2017] [Indexed: 06/07/2023]
Abstract
Injury assessment of birds following the Deepwater Horizon (DWH) oil spill in 2010 was part of the Natural Resource Damage Assessment. One reported effect was hemolytic anemia with the presence of Heinz bodies (HB) in birds, however, the role of route and magnitude of exposure to oil is unknown. The purpose of the present study was to determine if double-crested cormorants (Phalacocorax auritis; DCCO) exposed orally and dermally to artificially weathered crude oil would develop hemolytic anemia including HB and reticulocytosis. In the oral experiment, sub-adult, mixed-sex DCCOs were fed control (n = 8) or oil-injected fish with a daily target dose of 5 (n = 9) or 10 (n = 9) ml oil/kg for 21 days. Then, subadult control (n = 12) and treated (n = 13) cormorant groups of similar sex-ratio were dermally treated with approximately 13ml of water or weathered MC252 crude oil, respectively, every 3 days for 6 dosages approximating 20% surface coverage. Collected whole blood samples were analyzed by light (new methylene blue) and transmission electron microscopy. Both oral and dermal treatment with weathered DWH MC252 crude oil induced regenerative, but inadequately compensated, anemia due to hemolysis and hematochezia as indicated by decreased packed cell volume, relative increase in reticulocytes with lack of difference in corrected reticulocyte count, and morphologic evidence of oxidant damage at the ultrastructural level. Hemoglobin precipitation, HB formation, degenerate organelles, and systemic oxidant damage were documented. Heinz bodies were typically <2µm in length and smaller than in mammals. These oblong cytoplasmic inclusions were difficult to see upon routine blood smear evaluation and lacked the classic button appearance found in mammalian red blood cells. They could be found as light, homogeneous blue inclusions upon new methylene blue staining. Ultrastructurally, HB appeared as homogeneous, electron-dense structures within the cytosol and lacked membranous structure. Oxidant damage in avian red blood cells results in degenerate organelles and precipitated hemoglobin or HB with different morphology than that found in mammalian red blood cells. Ultrastructural evaluation is needed to definitively identify HB and damaged organelles to confirm oxidant damage. The best field technique based on the data in this study is assessment of PCV with storage of blood in glutaraldehyde for possible TEM analysis.
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Affiliation(s)
- Kendal E Harr
- URIKA, LLC. 8712 53rd Pl W, Mukilteo, WA 98275, USA.
| | - Fred L Cunningham
- USDA/USDA/WS/NWRC, Mississippi Field Station, Mississippi State University, Starkville, MS, USA.
| | - Chris A Pritsos
- University of Nevada-Reno, Max Fleischmann Agriculture Bldg. 210, Reno, NV 89557, USA.
| | - Karen L Pritsos
- University of Nevada-Reno, Max Fleischmann Agriculture Bldg. 210, Reno, NV 89557, USA
| | - Thivanka Muthumalage
- University of Nevada-Reno, Max Fleischmann Agriculture Bldg. 210, Reno, NV 89557, USA
| | - Brian S Dorr
- USDA/USDA/WS/NWRC, Mississippi Field Station, Mississippi State University, Starkville, MS, USA
| | | | - Katie C Hanson-Dorr
- USDA/USDA/WS/NWRC, Mississippi Field Station, Mississippi State University, Starkville, MS, USA
| | - Karen M Dean
- Abt Associates, 1881 Ninth St., Ste 201, Boulder, CO 80302-5148, USA.
| | - Dave Cacela
- Abt Associates, 1881 Ninth St., Ste 201, Boulder, CO 80302-5148, USA
| | - Andrew K McFadden
- Abt Associates, 1881 Ninth St., Ste 201, Boulder, CO 80302-5148, USA
| | - Jane E Link
- Michigan State University, East Lansing, MI, USA
| | - Katherine A Healy
- US Fish and Wildlife Service, Deepwater Horizon NRDAR Field Office, Fairhope, AL, USA.
| | - Pete Tuttle
- US Fish and Wildlife Service, Deepwater Horizon NRDAR Field Office, Fairhope, AL, USA
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8
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Understanding quasi-apoptosis of the most numerous enucleated components of blood needs detailed molecular autopsy. Ageing Res Rev 2017; 35:46-62. [PMID: 28109836 DOI: 10.1016/j.arr.2017.01.002] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2016] [Revised: 11/22/2016] [Accepted: 01/13/2017] [Indexed: 12/12/2022]
Abstract
Erythrocytes are the most numerous cells in human body and their function of oxygen transport is pivotal to human physiology. However, being enucleated, they are often referred to as a sac of molecules and their cellularity is challenged. Interestingly, their programmed death stands a testimony to their cell-hood. They are capable of self-execution after a defined life span by both cell-specific mechanism and that resembling the cytoplasmic events in apoptosis of nucleated cells. Since the execution process lacks the nuclear and mitochondrial events in apoptosis, it has been referred to as quasi-apoptosis or eryptosis. Several studies on molecular mechanisms underlying death of erythrocytes have been reported. The data has generated a non-cohesive sketch of the process. The lacunae in the present knowledge need to be filled to gain deeper insight into the mechanism of physiological ageing and death of erythrocytes, as well as the effect of age of organism on RBCs survival. This would entail how the most numerous cells in the human body die and enable a better understanding of signaling mechanisms of their senescence and premature eryptosis observed in individuals of advanced age.
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9
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Shimo H, Arjunan SNV, Machiyama H, Nishino T, Suematsu M, Fujita H, Tomita M, Takahashi K. Particle Simulation of Oxidation Induced Band 3 Clustering in Human Erythrocytes. PLoS Comput Biol 2015; 11:e1004210. [PMID: 26046580 PMCID: PMC4457884 DOI: 10.1371/journal.pcbi.1004210] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2014] [Accepted: 02/24/2015] [Indexed: 01/06/2023] Open
Abstract
Oxidative stress mediated clustering of membrane protein band 3 plays an essential role in the clearance of damaged and aged red blood cells (RBCs) from the circulation. While a number of previous experimental studies have observed changes in band 3 distribution after oxidative treatment, the details of how these clusters are formed and how their properties change under different conditions have remained poorly understood. To address these issues, a framework that enables the simultaneous monitoring of the temporal and spatial changes following oxidation is needed. In this study, we established a novel simulation strategy that incorporates deterministic and stochastic reactions with particle reaction-diffusion processes, to model band 3 cluster formation at single molecule resolution. By integrating a kinetic model of RBC antioxidant metabolism with a model of band 3 diffusion, we developed a model that reproduces the time-dependent changes of glutathione and clustered band 3 levels, as well as band 3 distribution during oxidative treatment, observed in prior studies. We predicted that cluster formation is largely dependent on fast reverse reaction rates, strong affinity between clustering molecules, and irreversible hemichrome binding. We further predicted that under repeated oxidative perturbations, clusters tended to progressively grow and shift towards an irreversible state. Application of our model to simulate oxidation in RBCs with cytoskeletal deficiency also suggested that oxidation leads to more enhanced clustering compared to healthy RBCs. Taken together, our model enables the prediction of band 3 spatio-temporal profiles under various situations, thus providing valuable insights to potentially aid understanding mechanisms for removing senescent and premature RBCs. In order to maintain a steady internal environment, our bodies must be able to specifically recognize old and damaged red blood cells (RBCs), and remove them from the circulation in a timely manner. Clusters of membrane protein band 3, which form in response to elevated oxidative damage, serve as essential molecular markers that initiate this cell removal process. However, little is known about the details of how these clusters are formed and how their properties change under different conditions. To understand these mechanisms in detail, we developed a computational model that enables the prediction of the time course profiles of metabolic intermediates, as well as the visualization of the resulting band 3 distribution during oxidative treatment. Our model predictions were in good agreement with previous published experimental data, and provided predictive insights on the key factors of cluster formation. Furthermore, simulation experiments of the effects of multiple oxidative pulses and cytoskeletal defect using the model also suggested that clustering is enhanced under such conditions. Analyses using our model can provide hypotheses and suggest experiments to aid the understanding of the physiology of anemia-associated RBC disorders, and optimization of quality control of RBCs in stored blood.
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Affiliation(s)
- Hanae Shimo
- Laboratory for Biochemical Simulation, RIKEN Quantitative Biology Center, Osaka, Japan
- Department of Biochemistry, School of Medicine, Keio University, Shinjuku, Tokyo, Japan
| | | | - Hiroaki Machiyama
- Laboratory for Biochemical Simulation, RIKEN Quantitative Biology Center, Osaka, Japan
- Immunology Frontier Research Center, Osaka University, Osaka, Japan
| | - Taiko Nishino
- Institute for Advanced Biosciences, Keio University, Tsuruoka, Yamagata, Japan
| | - Makoto Suematsu
- Department of Biochemistry, School of Medicine, Keio University, Shinjuku, Tokyo, Japan
- Institute for Advanced Biosciences, Keio University, Tsuruoka, Yamagata, Japan
| | - Hideaki Fujita
- Laboratory for Biochemical Simulation, RIKEN Quantitative Biology Center, Osaka, Japan
- Immunology Frontier Research Center, Osaka University, Osaka, Japan
| | - Masaru Tomita
- Institute for Advanced Biosciences, Keio University, Tsuruoka, Yamagata, Japan
- Department of Environment and Information Studies, Keio University, Fujisawa, Kanagawa, Japan
| | - Koichi Takahashi
- Laboratory for Biochemical Simulation, RIKEN Quantitative Biology Center, Osaka, Japan
- Institute for Advanced Biosciences, Keio University, Tsuruoka, Yamagata, Japan
- * E-mail:
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10
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Quaye IK. Extracellular hemoglobin: the case of a friend turned foe. Front Physiol 2015; 6:96. [PMID: 25941490 PMCID: PMC4403290 DOI: 10.3389/fphys.2015.00096] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2015] [Accepted: 03/12/2015] [Indexed: 12/14/2022] Open
Abstract
Hemoglobin (Hb) is a highly conserved molecule present in all life forms and functionally tied to the complexity of aerobic organisms on earth in utilizing oxygen from the atmosphere and delivering to cells and tissues. This primary function sustains the energy requirements of cells and maintains cellular homeostasis. Decades of intensive research has presented a paradigm shift that shows how the molecule also functions to facilitate smooth oxygen delivery through the cardiovascular system for cellular bioenergetic homeostasis and signaling for cell function and defense. These roles are particularly highlighted in the binding of Hb to gaseous molecules carbon dioxide (CO2), nitric oxide (NO) and carbon monoxide (CO), while also serving indirectly or directly as sources of these signaling molecules. The functional activities impacted by Hb outside of bioenergetics homeostasis, include fertilization, signaling functions, modulation of inflammatory responses for defense and cell viability. These activities are efficiently executed while Hb is sequestered safely within the confines of the red blood cell (rbc). Outside of rbc confines, Hb disaggregates and becomes a danger molecule to cell survival. In these perpectives, Hb function is broadly dichotomous, either a friend in its natural environment providing and facilitating the means for cell function or foe when dislocated from its habitat under stress or pathological condition disrupting cell function. The review presents insights into how this dichotomy in function manifests.
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Affiliation(s)
- Isaac K Quaye
- Department of Biochemistry, University of Namibia School of Medicine Windhoek, Namibia
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Godwin I, Li L, Luijben K, Oelbrandt N, Velazco J, Miller J, Hegarty R. The effects of chronic nitrate supplementation on erythrocytic methaemoglobin reduction in cattle. ANIMAL PRODUCTION SCIENCE 2015. [DOI: 10.1071/an13366] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
Calcium nitrate and urea were fed as a supplement on an isonitrogenous basis to Angus steers and their erythrocytic methaemoglobin concentrations and NADH- and NADPH-methaemoglobin reductase levels were measured over a 54-day period. Methaemoglobin concentrations remained elevated despite increases in NADH-methaemoglobin reductase activity. In a second experiment, Brahman cross steers were fed either calcium nitrate or urea supplements for 111 days. Blood cells were then taken, washed and exposed to sodium nitrite to convert all haemoglobin to methaemoglobin. The rates of glycolysis and methaemoglobin reduction were measured following incubation of these cells in buffers containing 1, 5 or 10 mM inorganic phosphate. Glucose consumption and methaemoglobin reduction were increased by inorganic phosphate and were more rapid in those animals supplemented with nitrate. Lactate production of erythrocytes was reduced in those animals fed nitrate. It is concluded that adaptation to chronic nitrite exposure occurs in the erythron, resulting in greater methaemoglobin reduction potential and that there is competition between NADH-methaemoglobin reductase and lactate dehydrogenase for NADH.
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New Roles Assigned to the α1–β1 (and α2–β2) Interface of the Human Hemoglobin Molecule from Physiological to Cellular. APPLIED SCIENCES-BASEL 2011. [DOI: 10.3390/app1010013] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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