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Zhang Y, Liu L, Wang X, Shen X, Pei Y, Liu Y. Bone marrow mesenchymal stem cells suppress activated CD4 + T cells proliferation through TGF-beta and IL10 dependent of autophagy in pathological hypoxic microenvironment. Biochem Biophys Res Commun 2024; 702:149591. [PMID: 38340652 DOI: 10.1016/j.bbrc.2024.149591] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2023] [Revised: 01/20/2024] [Accepted: 01/26/2024] [Indexed: 02/12/2024]
Abstract
BACKGROUND Bone marrow mesenchymal stem cells (BMSCs) mediated immunomodulation by secreting certain bioactive cytokines has been recognized as a promising approach for disease treatment. However, microenvironmental oxygen tension affect immunomodulatory functions and activate autophagy in BMSCs. The mechanism governing BMSCs immunomodulation in hypoxia hasn't been expounded clearly. The aim of this study is to investigate the function of pathological hypoxia on immunomodulatory properties of bone marrow mesenchymal stem cells and its possible mechanism. METHODS BMSCs were cultured in either normoxia (21 % oxygen) or hypoxia (0.1 % oxygen) for 24 h, then electron microscopy (EM) and immunofluorescence staining were used to detect the activation of autophagy. Besides autophagy-related markers were monitored by Western blotting. Atg5 siRNA induced autophagic inhibition. Additional, gene expression levels of Real-time fluorescence quantitative PCR and Western blot were used to detect BMSCs related cytokines. Both the proliferation and apoptosis of CD4+ T cell in co-culture were detected by flow cytometry. Exogenous anti-IL-10 antibody and anti-TGF-β1 antibody were used in co-cultured BMSCs-CM and CD4+ T cells, which enabled us to assess how autophagy affected BMSCs-mediated CD4+ T cell proliferation in low oxygen tension. RESULT Compared with normal BMSCs, Hypo-BMSCs enhanced the immunosuppressive effect of BMSCs on CD4+ T cell proliferation, while si-atg5 weakened the inhibition of Hypo-BMSCs. Furthermore, exogenous anti-TGF-β1 antibody and the addition of anti-TGF-β1 antibody reversed the immunosuppressive ability of Hypo-BMSCs. CONCLUSIONS Our findings reveal that BMSCs possess significant immunosuppression on CD4+T cell through IL-10 and TGF-β1 dependent of autophagy in hypoxic microenvironment.
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Affiliation(s)
- Yan Zhang
- Laboratory of Tissue Regeneration and Immunology and Department of Periodontics, Beijing Key Laboratory of Tooth Regeneration and Function Reconstruction, School of Stomatology, Capital Medical University, Beijing, China; Beijing LUHE Hospital Capital Medical University, Beijing, China
| | - Liang Liu
- Orthopedic Center, Beijing LUHE Hospital Capital Medical University, Beijing, China
| | - Xiaobo Wang
- Department of Basic Medical Sciences, School of Medicine, Tsinghua University, Beijing, China
| | - Xuezhen Shen
- Orthopedic Center, Beijing LUHE Hospital Capital Medical University, Beijing, China
| | - Yilun Pei
- Orthopedic Center, Beijing LUHE Hospital Capital Medical University, Beijing, China
| | - Yi Liu
- Laboratory of Tissue Regeneration and Immunology and Department of Periodontics, Beijing Key Laboratory of Tooth Regeneration and Function Reconstruction, School of Stomatology, Capital Medical University, Beijing, China.
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Yang X, Lou C, Zhang Q, Liu G, Ding Y, Zhang Q, Ye C. Hypoxia-induced circRTN4IP1 promotes progression and glycolysis of hepatocellular carcinoma cells. Funct Integr Genomics 2023; 23:339. [PMID: 37982910 DOI: 10.1007/s10142-023-01256-0] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2023] [Revised: 10/13/2023] [Accepted: 10/16/2023] [Indexed: 11/21/2023]
Abstract
Hypoxia is one of the hallmarks of solid tumors, especially in hepatocellular carcinoma (HCC). CircRNAs are reported to be tightly connected to hypoxia and also have essential roles in cancer progression. However, many circRNAs implicated in hypoxia-mediated HCC progression are still unclear and require further exploration. In this study, a hypoxia cell model was structured by exposing cells to hypoxia conditions (1% O2) and normoxia conditions (21% O2) as a control. The effects of hypoxia and normoxia on cell viability, migration, invasion, and glycolysis were examined. The expressions of circRNARTN4IP1 under hypoxia were identified. Finally, molecular mechanisms and biological function of circRTN4IP1 were explored. We confirmed that hypoxia treatment facilitated capacities of proliferation, migration, invasion, and glycolysis in tumor cells. Hypoxia induced a significant increase expression of circRTN4IP1 in cells. Functionally, knockdown of circRTN4IP1 inhibited cell malignant progression and glycolysis under hypoxia HCC cells. Mechanistically, HIF1A targeted the promoter region of circRTN4IP1 and positively regulated the expression of circRTN4IP1. In addition, circRTN4IP1 targeted miR-532-5p/G6PC3 axis. In short, hypoxia induced activation of the HIF1A/circRTN4IP1/miR-532-5p/G6PC3 signaling axis, which promoted proliferation, migration, invasion, and glycolysis of HCC cells. This study may reveal a possible mechanism driving the progression of hypoxia HCC, so as to find potential effective candidates for targeting hypoxia microenvironment therapy.
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Affiliation(s)
- Xijing Yang
- Department of Biotherapy, Third Affiliated Hospital of Naval Medical University (Eastern Hepatobiliary Surgery Hospital), No. 700, North Moyu Road, Jiading District, Shanghai, 201805, China
| | - Cheng Lou
- Department of Oncology, Third Affiliated Hospital of Naval Medical University (Eastern Hepatobiliary Surgery Hospital), Shanghai, 201805, China
| | - Qing Zhang
- Clinical Research Center, Tongji Hospital, Tongji University School of Medicine, Shanghai, 200065, China
| | - Guofang Liu
- Department of Biotherapy, Third Affiliated Hospital of Naval Medical University (Eastern Hepatobiliary Surgery Hospital), No. 700, North Moyu Road, Jiading District, Shanghai, 201805, China
| | - Yongmei Ding
- Department of Biotherapy, Third Affiliated Hospital of Naval Medical University (Eastern Hepatobiliary Surgery Hospital), No. 700, North Moyu Road, Jiading District, Shanghai, 201805, China
| | - Qian Zhang
- Department of Biotherapy, Third Affiliated Hospital of Naval Medical University (Eastern Hepatobiliary Surgery Hospital), No. 700, North Moyu Road, Jiading District, Shanghai, 201805, China.
| | - Chun Ye
- Department of General Surgery, Tongji Hospital, Tongji University School of Medicine, No. 389, Xincun Road, Putuo District, Shanghai, 200065, China.
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Feng X, Chen Z, Liu Z, Fu X, Song H, Zhang Q. Self-delivery photodynamic-hypoxia alleviating nanomedicine synergizes with anti-PD-L1 for cancer immunotherapy. Int J Pharm 2023; 639:122970. [PMID: 37084832 DOI: 10.1016/j.ijpharm.2023.122970] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2023] [Revised: 03/29/2023] [Accepted: 04/15/2023] [Indexed: 04/23/2023]
Abstract
The low level of T-lymphocyte infiltration in tumor is a key issue in cancer immunotherapy. Stimulating anti-tumor immune responses and improving the tumor microenvironment are essential for enhancing anti-PD-L1 immunotherapy. Herein, atovaquone (ATO), protoporphyrin IX (PpIX), and stabilizer (ATO/PpIX NPs) were constructed to self-assemble with hydrophobic interaction and passively targeted to tumor for the first time. The studies have indicated that PpIX-mediated photodynamic induction of immunogenic cell death combined with relieving tumor hypoxia by ATO, leading to maturation of dendritic cells, polarization of M2-type tumor-associated macrophages (TAMs) towards M1-type TAMs, infiltration of cytotoxic T lymphocytes, reduction of regulatory T cells, release of pro-inflammatory cytokines, resulting in an effective anti-tumor immune response synergized with anti-PD-L1 against primary tumor and pulmonary metastasis. Taken together, the combined nanoplatform may be a promising strategy to enhance cancer immunotherapy.
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Affiliation(s)
- Xianquan Feng
- The School of Pharmacy, Fujian Medical University, Fuzhou 350108, PR China; Fuzong Clinical Medical College of Fujian Medical University, Fuzhou 350025, PR China
| | - Zhenzhen Chen
- Fuzong Clinical Medical College of Fujian Medical University, Fuzhou 350025, PR China
| | - Zhihong Liu
- Fuzong Clinical Medical College of Fujian Medical University, Fuzhou 350025, PR China
| | - Xiaoling Fu
- The School of Pharmacy, Fujian Medical University, Fuzhou 350108, PR China
| | - Hongtao Song
- The School of Pharmacy, Fujian Medical University, Fuzhou 350108, PR China; Fuzong Clinical Medical College of Fujian Medical University, Fuzhou 350025, PR China
| | - Qian Zhang
- The School of Pharmacy, Fujian Medical University, Fuzhou 350108, PR China.
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Zhao Y, Tian C, Liu Y, Liu Z, Li J, Wang Z, Han X. All-in-one bioactive properties of photothermal nanofibers for accelerating diabetic wound healing. Biomaterials 2023; 295:122029. [PMID: 36731368 DOI: 10.1016/j.biomaterials.2023.122029] [Citation(s) in RCA: 33] [Impact Index Per Article: 33.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2022] [Revised: 01/12/2023] [Accepted: 01/26/2023] [Indexed: 01/29/2023]
Abstract
Diabetic wound healing has attracted widespread attention in biomedical engineering. However, the harsh hypoxic microenvironment (HME) comprising high glucose levels, local bleeding, and bacterial infection often leads to the formation of hyperplastic scars, increasing the clinical demand for wound dressings. Here, we report a comprehensive strategy using near-infrared NIR-assisted oxygen delivery combined with the bioactive nature of biopolymers for remodeling the HME. Black phosphorus (BP) nanosheets and hemoglobin (Hb) were self-assembled layerwise onto electrospun poly-l-lactide (PLLA) nanofibers using charged quaternized chitosan (QCS) and hyaluronic acid. BP converts NIR radiation into heat and stimulates Hb to release oxygen in situ. QCS is a hemostatic and broad-spectrum antibacterial material. Moderate BP-derived photothermal therapy can increase the sensitivity of bacteria to QCS. A series of composite wound dressings (coded as PQBH-n) with different numbers of layers were fabricated, and the in vivo diabetic wound healing potentials were tested. The molecular mechanism can be partly attributed to the cytokine-cytokine receptor interaction. Notably, this comprehensive strategy based on NIR-assisted oxygen delivery combined with the bioactive properties of biopolymers is not only applicable for fabricating multifunctional wound dressings but also has a great potential in expanding biomedical engineering fields.
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Affiliation(s)
- Yanan Zhao
- Department of Interventional Radiology, Key Laboratory of Interventional Radiology of Henan Province, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, 450052, China.
| | - Chuan Tian
- Department of Interventional Radiology, Key Laboratory of Interventional Radiology of Henan Province, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, 450052, China; Department of Interventional Medical Center, The Affiliated Hospital of Qingdao University, No. 1677 Wutaishan Road, Shandong, 266000, Qingdao, China
| | - Yiming Liu
- Department of Interventional Radiology, Key Laboratory of Interventional Radiology of Henan Province, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, 450052, China
| | - Zaoqu Liu
- Department of Interventional Radiology, Key Laboratory of Interventional Radiology of Henan Province, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, 450052, China
| | - Jing Li
- Department of Interventional Radiology, Key Laboratory of Interventional Radiology of Henan Province, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, 450052, China
| | - Zijian Wang
- Department of Urology, Cancer Precision Diagnosis and Treatment and Translational Medicine Hubei Engineering Research Center, Zhongnan Hospital of Wuhan University, Wuhan, 430071, China; Department of Biomedical Engineering and Hubei Province Key Laboratory of Allergy and Immune Related Disease, TaiKang Medical School (School of Basic Medicine Sciences), Wuhan University, Wuhan, 430071, China.
| | - Xinwei Han
- Department of Interventional Radiology, Key Laboratory of Interventional Radiology of Henan Province, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, 450052, China.
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Sun H, Xu J, Wang Y, Shen S, Xu X, Zhang L, Jiang Q. Bone microenvironment regulative hydrogels with ROS scavenging and prolonged oxygen-generating for enhancing bone repair. Bioact Mater 2023; 24:477-496. [PMID: 36714330 PMCID: PMC9843284 DOI: 10.1016/j.bioactmat.2022.12.021] [Citation(s) in RCA: 21] [Impact Index Per Article: 21.0] [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: 09/29/2022] [Revised: 12/21/2022] [Accepted: 12/21/2022] [Indexed: 01/11/2023] Open
Abstract
Large bone defects resulting from fractures and disease are a major clinical challenge, being often unable to heal spontaneously by the body's repair mechanisms. Lines of evidence have shown that hypoxia-induced overproduction of ROS in bone defect region has a major impact on delaying bone regeneration. However, replenishing excess oxygen in a short time cause high oxygen tension that affect the activity of osteoblast precursor cells. Therefore, reasonably restoring the hypoxic condition of bone microenvironment is essential for facilitating bone repair. Herein, we designed ROS scavenging and responsive prolonged oxygen-generating hydrogels (CPP-L/GelMA) as a "bone microenvironment regulative hydrogel" to reverse the hypoxic microenvironment in bone defects region. CPP-L/GelMA hydrogels comprises an antioxidant enzyme catalase (CAT) and ROS-responsive oxygen-releasing nanoparticles (PFC@PLGA/PPS) co-loaded liposome (CCP-L) and GelMA hydrogels. Under hypoxic condition, CPP-L/GelMA can release CAT for degrading hydrogen peroxide to generate oxygen and be triggered by superfluous ROS to continuously release the oxygen for more than 2 weeks. The prolonged oxygen enriched microenvironment generated by CPP-L/GelMA hydrogel significantly enhanced angiogenesis and osteogenesis while inhibited osteoclastogenesis. Finally, CPP-L/GelMA showed excellent bone regeneration effect in a mice skull defect model through the Nrf2-BMAL1-autophagy pathway. Hence, CPP-L/GelMA, as a bone microenvironment regulative hydrogel for bone tissue respiration, can effectively scavenge ROS and provide prolonged oxygen supply according to the demand in bone defect region, possessing of great clinical therapeutic potential.
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Key Words
- Alizarin red staining, ARS
- Alkaline phosphatase, ALP
- Bone defect
- Bone marrow mesenchymal stem cells, BMSC
- Bovine serum albumin, BSA
- Brain and muscle arnt-like protein 1
- Brain and muscle arnt-like protein 1, BMAL1
- Catalase, CAT
- Fetal liver kinase-1, Flk-1
- Human umbilical vein endothelial cells, HUVEC
- Hypoxic microenvironment
- Liposome, Lip
- Microtubule-associated proteins light chain 3, LC3
- Nuclear factor (erythroid-derived 2)-like 2, NRF2
- Osteocalcin, OCN
- Osteopontin, OPN
- Perfluorocarbon, PFC
- Phosphate-buffered saline, PBS
- Poly (D, L-lactide-co-glycolide), PLGA
- Poly (propylene sulphide), PPS
- Prolonged oxygen generation
- Reactive oxygen species responsiveness
- Reactive oxygen species, ROS
- Receptor activator of nuclear factor-kappa B ligand, RANKL
- Runt-related transcription factor 2, RUNX2
- Short interfering RNA, siRNA
- Soy phosphatidylcholine, SPC
- Type I collagen, Col I
- Western blot, WB
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Affiliation(s)
- Han Sun
- State Key Laboratory of Pharmaceutical Biotechnology, Division of Sports Medicine and Adult Reconstructive Surgery, Department of Orthopedic Surgery, Nanjing Drum Tower Hospital, The Affiliated Hospital of Nanjing University Medical School, 321 Zhongshan Road, Nanjing, 210008, Jiangsu, PR China,Branch of National Clinical Research Center for Orthopedics, Sports Medicine and Rehabilitation, PR China,Co-innovation Center of Neuroregeneration, Nantong University, 9 Seyuan Road, Nantong, 226019, Jiangsu, PR China,Articular Orthopaedics, The Third Affiliated Hospital of Soochow University, 185 Juqian Road, Changzhou, 213003, Jiangsu, PR China
| | - Juan Xu
- State Key Laboratory of Pharmaceutical Biotechnology, Division of Sports Medicine and Adult Reconstructive Surgery, Department of Orthopedic Surgery, Nanjing Drum Tower Hospital, The Affiliated Hospital of Nanjing University Medical School, 321 Zhongshan Road, Nanjing, 210008, Jiangsu, PR China,Branch of National Clinical Research Center for Orthopedics, Sports Medicine and Rehabilitation, PR China,Co-innovation Center of Neuroregeneration, Nantong University, 9 Seyuan Road, Nantong, 226019, Jiangsu, PR China
| | - Yangyufan Wang
- State Key Laboratory of Pharmaceutical Biotechnology, Division of Sports Medicine and Adult Reconstructive Surgery, Department of Orthopedic Surgery, Nanjing Drum Tower Hospital, The Affiliated Hospital of Nanjing University Medical School, 321 Zhongshan Road, Nanjing, 210008, Jiangsu, PR China,Branch of National Clinical Research Center for Orthopedics, Sports Medicine and Rehabilitation, PR China,Co-innovation Center of Neuroregeneration, Nantong University, 9 Seyuan Road, Nantong, 226019, Jiangsu, PR China
| | - Siyu Shen
- State Key Laboratory of Pharmaceutical Biotechnology, Division of Sports Medicine and Adult Reconstructive Surgery, Department of Orthopedic Surgery, Nanjing Drum Tower Hospital, The Affiliated Hospital of Nanjing University Medical School, 321 Zhongshan Road, Nanjing, 210008, Jiangsu, PR China,Branch of National Clinical Research Center for Orthopedics, Sports Medicine and Rehabilitation, PR China,Co-innovation Center of Neuroregeneration, Nantong University, 9 Seyuan Road, Nantong, 226019, Jiangsu, PR China
| | - Xingquan Xu
- State Key Laboratory of Pharmaceutical Biotechnology, Division of Sports Medicine and Adult Reconstructive Surgery, Department of Orthopedic Surgery, Nanjing Drum Tower Hospital, The Affiliated Hospital of Nanjing University Medical School, 321 Zhongshan Road, Nanjing, 210008, Jiangsu, PR China,Branch of National Clinical Research Center for Orthopedics, Sports Medicine and Rehabilitation, PR China,Co-innovation Center of Neuroregeneration, Nantong University, 9 Seyuan Road, Nantong, 226019, Jiangsu, PR China,Corresponding author. State Key Laboratory of Pharmaceutical Biotechnology, Division of Sports Medicine and Adult Reconstructive Surgery, Department of Orthopedic Surgery, Nanjing Drum Tower Hospital, The Affiliated Hospital of Nanjing University Medical School, 321 Zhongshan Road, Nanjing, 210008, Jiangsu, PR China.
| | - Lei Zhang
- State Key Laboratory of Pharmaceutical Biotechnology, Division of Sports Medicine and Adult Reconstructive Surgery, Department of Orthopedic Surgery, Nanjing Drum Tower Hospital, The Affiliated Hospital of Nanjing University Medical School, 321 Zhongshan Road, Nanjing, 210008, Jiangsu, PR China,Branch of National Clinical Research Center for Orthopedics, Sports Medicine and Rehabilitation, PR China,Co-innovation Center of Neuroregeneration, Nantong University, 9 Seyuan Road, Nantong, 226019, Jiangsu, PR China,Corresponding author. State Key Laboratory of Pharmaceutical Biotechnology, Division of Sports Medicine and Adult Reconstructive Surgery, Department of Orthopedic Surgery, Nanjing Drum Tower Hospital, The Affiliated Hospital of Nanjing University Medical School, 321 Zhongshan Road, Nanjing, 210008, Jiangsu, PR China.
| | - Qing Jiang
- State Key Laboratory of Pharmaceutical Biotechnology, Division of Sports Medicine and Adult Reconstructive Surgery, Department of Orthopedic Surgery, Nanjing Drum Tower Hospital, The Affiliated Hospital of Nanjing University Medical School, 321 Zhongshan Road, Nanjing, 210008, Jiangsu, PR China,Branch of National Clinical Research Center for Orthopedics, Sports Medicine and Rehabilitation, PR China,Co-innovation Center of Neuroregeneration, Nantong University, 9 Seyuan Road, Nantong, 226019, Jiangsu, PR China,Corresponding author. State Key Laboratory of Pharmaceutical Biotechnology, Division of Sports Medicine and Adult Reconstructive Surgery, Department of Orthopedic Surgery, Nanjing Drum Tower Hospital, The Affiliated Hospital of Nanjing University Medical School, 321 Zhongshan Road, Nanjing, 210008, Jiangsu, PR China.
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Liu YX, Dou SJ, Li M, Wang XL. Production of indole and hydrogen sulfide by the oxygen-tolerant mutant strain Clostridium sp. Aeroto-AUH-JLC108 contributes to form a hypoxic microenvironment. Arch Microbiol 2022; 204:486. [PMID: 35834134 DOI: 10.1007/s00203-022-03113-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2022] [Revised: 06/25/2022] [Accepted: 06/28/2022] [Indexed: 11/02/2022]
Abstract
In this study, the oxygen-tolerant mutant strain Clostridium sp. Aeroto-AUH-JLC108 was found to produce indole when grown aerobically. The tnaA gene coding for tryptophanase responsible for the production of indole was cloned. The tnaA gene from Aeroto-AUH-JLC108 is 1677 bp and has one point mutation (C36G) compared to the original anaerobic strain AUH-JLC108. Phylogenetic analyses based on the amino acid sequence showed significant homology to that of TnaA from Flavonifractor. Furthermore, we found that the tnaA gene also exhibited cysteine desulfhydrase activity. The production of hydrogen sulfide (H2S) was accompanied by decrease in the amount of the dissolved oxygen in the culture medium. Similarly, the amount of indole produced by strain Aeroto-AUH-JLC108 obviously decreased the oxidation-reduction potential (ORP) in BHI liquid medium. The results demonstrated that production of indole and H2S helped to form a hypoxic microenvironment for strain Aeroto-AUH-JLC108 when grown aerobically.
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Yi O, Lin Y, Hu M, Hu S, Su Z, Liao J, Liu B, Liu L, Cai X. Lactate metabolism in rheumatoid arthritis: Pathogenic mechanisms and therapeutic intervention with natural compounds. Phytomedicine 2022; 100:154048. [PMID: 35316725 DOI: 10.1016/j.phymed.2022.154048] [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] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/17/2021] [Revised: 02/26/2022] [Accepted: 03/11/2022] [Indexed: 06/14/2023]
Abstract
BACKGROUND Rheumatoid arthritis (RA) is a common chronic and systemic autoimmune disease characterized by persistent inflammation and hyperplasia of the synovial membrane, the degradation of cartilage, and the erosion of bones in diarthrodial joints. The inflamed joints of patients with RA have been recognized to be a site of hypoxic microenvironment which results in an imbalance of lactate metabolism and the accumulation of lactate. Lactate is no longer considered solely a metabolic waste product of glycolysis, but also a combustion aid in the progression of RA from the early stages of inflammation to the late stages of bone destruction. PURPOSE To review the pathogenic mechanisms of lactate metabolism in RA and investigate the potential of natural compounds for treating RA linked to the regulation of imbalance in lactate metabolism. METHODS Research advances in our understanding of lactate metabolism in the pathogenesis of RA and novel pharmacological approaches of natural compounds by targeting lactate metabolic signaling were comprehensively reviewed and deeply discussed. RESULTS Lactate produced by RA synovial fibroblasts (RASFs) acts on targeted cells such as T cells, macrophages, dendritic cells and osteoclasts, and affects their differentiation, activation and function to accelerate the development of RA. Many natural compounds show therapeutic potential for RA by regulating glycolytic rate-limiting enzymes to limit lactate production, and affecting monocarboxylate transporter and acetyl-CoA carboxylase to inhibit lactate transport and conversion. CONCLUSION Regulation of imbalance in lactate metabolism offers novel therapeutic approaches for RA, and natural compounds capable of targeting lactate metabolic signaling constitute potential candidates for development of drugs RA.
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Affiliation(s)
- Ouyang Yi
- Institute of Innovation and Applied Research in Chinese Medicine and Department of Rheumatology of The First Hospital, Hunan University of Chinese Medicine, Changsha, Hunan, 410208, China
| | - Ye Lin
- Institute of Innovation and Applied Research in Chinese Medicine and Department of Rheumatology of The First Hospital, Hunan University of Chinese Medicine, Changsha, Hunan, 410208, China
| | - Mingyue Hu
- Institute of Innovation and Applied Research in Chinese Medicine and Department of Rheumatology of The First Hospital, Hunan University of Chinese Medicine, Changsha, Hunan, 410208, China
| | - Shengtao Hu
- Institute of Innovation and Applied Research in Chinese Medicine and Department of Rheumatology of The First Hospital, Hunan University of Chinese Medicine, Changsha, Hunan, 410208, China
| | - Zhaoli Su
- Institute of Innovation and Applied Research in Chinese Medicine and Department of Rheumatology of The First Hospital, Hunan University of Chinese Medicine, Changsha, Hunan, 410208, China
| | - Jin Liao
- Institute of Innovation and Applied Research in Chinese Medicine and Department of Rheumatology of The First Hospital, Hunan University of Chinese Medicine, Changsha, Hunan, 410208, China
| | - Bin Liu
- College of Biology, Hunan University, Changsha, Hunan 410082, China
| | - Liang Liu
- State Key Laboratory of Quality Research in Chinese Medicine, Macau University of Science and Technology, Macau, 030027, China
| | - Xiong Cai
- Institute of Innovation and Applied Research in Chinese Medicine and Department of Rheumatology of The First Hospital, Hunan University of Chinese Medicine, Changsha, Hunan, 410208, China
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Li M, Xiao M, Pan Q, Xiong J. Multifunctional nanoplatform based on g-C 3N 4, loaded with MnO 2 and CuS nanoparticals for oxygen self-generation photodynamic/photothermal synergistic therapy. Photodiagnosis Photodyn Ther 2021; 37:102684. [PMID: 34923155 DOI: 10.1016/j.pdpdt.2021.102684] [Citation(s) in RCA: 6] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2021] [Revised: 11/30/2021] [Accepted: 12/10/2021] [Indexed: 10/19/2022]
Abstract
Photodynamic therapy (PDT) and photothermal therapy (PTT) are both promising therapeutic approaches for cancer. Unfortunately, the anticancer efficiency of PDT is restricted by the hypoxic tumor microenvironment and the performance of the photosensitizer (PS) while the efficiency of PTT is limited by the penetration depth of NIR light, making it difficult to further improve the efficiency of the treatment. In this paper, we strategically proposed a multifunctional nano-platform based on g-C3N4 and loaded with CuS and MnO2 nanoparticals. Interestingly, the obtained F127@CNs-CuS/MnO2 nano-platform with high singlet oxygen quantum yield and excellent photothermal performance were used in synergistic PTT and PDT therapy to cope with the limitation of single mode cancer treatment under irradiation and has greatly improved the treatment effect. Additionally, MnO2 nanoparticles loaded on the CNs surface could not only generate oxygen to ameliorate hypoxia in the tumor environment by reacting with H2O2 in tumor cells, but also react with the over-expressed reduced glutathione (GSH) in cancer cells to further improve the synergistic therapeutic effect. In the in vitro hepatocarcinoma cell inactivation experiment, the maximum cell inactivation efficiency of the PDT, PTT and PDT/PTT synergistic treatment group reached at 65% (F127@CNs-MnO2), 69.2% (CNs-MnO2) and 88.6% (F127@CNs-MnO2) respectively, which means that the F127@CNs-CuS/MnO2-mediated PTT/PDT synergy anticancer treatment was more effective than single mode therapy. In summary, the innovative multifunctional nanoplatform F127@CNs-CuS/MnO2 used for synergistic PTT and PDT treatment has greatly improved the inactivation efficiency of cancer cells and has provided a new scheme for the treatment of hypoxic tumors.
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Affiliation(s)
- Miaomiao Li
- School of Physics and Telecommunication Engineering, South China Normal University, Guangzhou 510006, China
| | - Mucang Xiao
- School of Physics and Telecommunication Engineering, South China Normal University, Guangzhou 510006, China
| | - Qilin Pan
- School of Physics and Telecommunication Engineering, South China Normal University, Guangzhou 510006, China.
| | - Jianwen Xiong
- School of Physics and Telecommunication Engineering, South China Normal University, Guangzhou 510006, China.
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Teixeira SA, Viapiano MS, Andrade AF, Nandhu MS, Pezuk JA, Bidinotto LT, Suazo VK, Neder L, Carlotti CG, Becker AP, Tone LG, Scrideli CA. The Carbonic Anhydrase Inhibitor E7070 Sensitizes Glioblastoma Cells to Radio- and Chemotherapy and Reduces Tumor Growth. Mol Neurobiol 2021. [PMID: 34085182 DOI: 10.1007/s12035-021-02437-3] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2021] [Accepted: 05/18/2021] [Indexed: 01/13/2023]
Abstract
Glioblastomas (GBMs), the most common and lethal primary brain tumor, show inherent infiltrative nature and high molecular heterogeneity that make complete surgical resection unfeasible and unresponsive to conventional adjuvant therapy. Due to their fast growth rate even under hypoxic and acidic conditions, GBM cells can conserve the intracellular pH at physiological range by overexpressing membrane-bound carbonic anhydrases (CAs). The synthetic sulfonamide E7070 is a potent inhibitor of CAs that harbors putative anticancer properties; however, this drug has still not been tested in GBMs. The present study aimed to evaluate the effects of E7070 on CA9 and CA12 enzymes in GBM cells as well as in the tumor cell growth, migration, invasion, and resistance to radiotherapy and chemotherapy. We found that E7070 treatment significantly reduced tumor cell growth and increased radio- and chemotherapy efficacy against GBM cells under hypoxia. Our data suggests that E7070 has therapeutic potential as a radio-chemo-sensitizing in drug-resistant GBMs, representing an attractive strategy to improve the adjuvant therapy. We showed that CA9 and CA12 represent potentially valuable therapeutic targets that should be further investigated as useful diagnostic and prognostic biomarkers for GBM tailored therapy.
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Zhu S, Ying Y, He Y, Zhong X, Ye J, Huang Z, Chen M, Wu Q, Zhang Y, Xiang Z, Tu Y, Ying W, Xiao J, Li X, Ye Q, Wang Z. Hypoxia response element-directed expression of bFGF in dental pulp stem cells improve the hypoxic environment by targeting pericytes in SCI rats. Bioact Mater 2021; 6:2452-2466. [PMID: 33553827 PMCID: PMC7850944 DOI: 10.1016/j.bioactmat.2021.01.024] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [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: 12/07/2020] [Revised: 01/07/2021] [Accepted: 01/19/2021] [Indexed: 02/08/2023] Open
Abstract
Cell-based transplantation strategies possess great potential for spinal cord injury (SCI) repair. Basic fibroblast growth factor (bFGF) has been reported to have multiple neuro-promoting effects on developing and adult nervous system of mammals and considered a promising therapy for nerve injury following SCI. Human dental pulp stem cells (DPSCs) are abundant stem cells with low immune rejection, which can be considered for cell replacement therapy. The purpose of this study was to investigate the roles of DPSCs which express bFGF under the regulation of five hypoxia-responsive elements (5HRE) using an adeno-associated virus (AAV-5HRE-bFGF-DPSCs) in SCI repairing model. In this study, DPSCs were revealed to differentiate into CD13+ pericytes and up-regulate N-cadherin expression to promote the re-attachment of CD13+ pericytes to vascular endothelial cells. The re-attachment of CD13+ pericytes to vascular endothelial cells subsequently increased the flow rate of blood in microvessels via the contraction of protuberance. As a result, increased numbers of red blood cells carried more oxygen to the damaged area and the local hypoxia microenvironment in SCI was improved. Thus, this study represents a step forward towards the potential use of AAV-5HRE-bFGF-DPSCs in SCI treatment in clinic. ) 5HRE-bFGF-DPSCs secrete bFGF in a hypoxia dependent manner, making the administration more precise. CD13+ pericyte regulate vascular diameter and promote the recovery of hypoxia microenvironment via DDC-5HT-5HT-1B in SCI. 5HRE-bFGF-DPSCs can differentiate into CD13+ pericyte to compensate for the mass death of CD13+ pericyte after SCI. 5HRE-bFGF-DPSCs promote CD13+ pericyte adhesion to vascular endothelial cell by secreting bFGF through N-cadherin. 5HRE-bFGF-DPSCs promote the recovery of SCI by restoring hypoxic microenvironment and inhibit autophagy pathway.
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Affiliation(s)
- Sipin Zhu
- Department of Orthopaedics, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, Zhejiang, 325000, China
| | - Yibo Ying
- Department of Orthopaedics, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, Zhejiang, 325000, China
| | - Yan He
- Laboratory of Regenerative Medicine, Tianyou Hospital, Wuhan University of Science and Technology, Wuhan, 430064, China
| | - Xingxing Zhong
- The Department of Cardiology, The First Affiliated Hospital, School of Medicine, Zhejiang University, China
| | - Jiahui Ye
- Department of Orthopaedics, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, Zhejiang, 325000, China
| | - Zhiyang Huang
- Department of Orthopaedics, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, Zhejiang, 325000, China
| | - Min Chen
- Department of Orthopaedics, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, Zhejiang, 325000, China
| | - Qiuji Wu
- Department of Orthopaedics, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, Zhejiang, 325000, China
| | - Yifan Zhang
- Department of Orthopaedics, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, Zhejiang, 325000, China
| | - Ziyue Xiang
- Department of Orthopaedics, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, Zhejiang, 325000, China
| | - Yurong Tu
- Department of Orthopaedics, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, Zhejiang, 325000, China
| | - Weiyang Ying
- Department of Pain Medicine, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, 325000, Zhejiang, China
| | - Jian Xiao
- Molecular Pharmacology Research Center, School of Pharmaceutical Science, Wenzhou Medical University, Wenzhou, Zhejiang, China.,Research Units of Clinical Translation of Cell Growth Factors and Diseases Research, Chinese Academy of Medical Science, China
| | - Xiaokun Li
- Molecular Pharmacology Research Center, School of Pharmaceutical Science, Wenzhou Medical University, Wenzhou, Zhejiang, China.,Research Units of Clinical Translation of Cell Growth Factors and Diseases Research, Chinese Academy of Medical Science, China
| | - Qingsong Ye
- School and Hospital of Stomatology, Wenzhou Medical University, Wenzhou, 325035, China.,Massachusetts General Hospital, Harvard University, Boston, 02114, USA.,Center of Regenerative Medicine, Renmin Hospital of Wuhan University, Wuhan, 630060, China
| | - Zhouguang Wang
- Department of Orthopaedics, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, Zhejiang, 325000, China.,Molecular Pharmacology Research Center, School of Pharmaceutical Science, Wenzhou Medical University, Wenzhou, Zhejiang, China
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11
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Yang HZ, Zhou XH. Mechanism for hypoxia inducible factor-1α to promote immune escape and therapeutic tolerance in hepatocellular carcinoma under hypoxic microenvironment. Shijie Huaren Xiaohua Zazhi 2020; 28:904-913. [DOI: 10.11569/wcjd.v28.i18.904] [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] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Abstract
The liver is the largest immune organ in the body, and immunologic tolerance and escape mechanisms play an important role in hepatocellular carcinoma (HCC) development. HCC has a complex tumor microenvironment (TME), and it is necessary to study the mechanism that causes HCC cells to escape the body immune surveillance and produce therapeutic resistance in HCC clinical treatment. Hypoxia inducible factor-1α (HIF-1α) is a transcription factor that contains α subunits regulated by hypoxia. Tumor cells highly express HIF-1α in a hypoxic environment, which participates in the processes of tumor cell proliferation and metastasis, microvascular production, immune escape, and therapeutic tolerance, ultimately promoting tumorigenesis and development. In this paper, we will elaborate on the mechanisms by which HCC cells activate HIF-1α expression to promote hypoxic adaptation in cancer cells and regulate immune escape and treatment tolerance in hypoxic TME.
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Affiliation(s)
- Huan-Zhen Yang
- Graduate School of Youjiang Medical College for Nationalities, Baise 533000, Guangxi Zhuang Autonomous Region, China
| | - Xi-Han Zhou
- Department of Gastroenterology, Affiliated Hospital of Youjiang Medical College Nationalities, Baise 533000, Guangxi Zhuang Autonomous Region, China
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12
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Duan L, Tao J, Yang X, Ye L, Wu Y, He Q, Duan Y, Chen L, Zhu J. HVEM/HIF-1α promoted proliferation and inhibited apoptosis of ovarian cancer cells under hypoxic microenvironment conditions. J Ovarian Res 2020; 13:40. [PMID: 32312328 PMCID: PMC7168979 DOI: 10.1186/s13048-020-00646-3] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [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] [Received: 08/13/2019] [Accepted: 04/07/2020] [Indexed: 12/16/2022] Open
Abstract
Background Our previous studies showed the expression of herpes virus entry mediator (HVEM) is high in ovarian cancer samples and correlated to the patient clinic pathological features. As we all know, the hypoxic environment is the main feature of tumor. In this work, we explored the role of HVEM in hypoxic ovarian cancer cells and its effects on HIF-1α, a transcription factor responding to hypoxia. Methods The expression of HVEM, HIF-1α and apoptosis-related genes was detected by qRT-PCR and western blot. The proliferation and apoptosis of the ovarian cancer cells were determined with the Cell Counting Kit-8 assay and AnnexinV-FITC/PI-stained flow cytometry assay, respectively. Results The expression of HVEM was positively correlated to that of HIF-1α. The expression of HVEM and HIF-1α under hypoxic conditions was higher than that under normoxic conditions, which suggested that the level of HVEM and HIF-1α correlates with prolonged periods of hypoxia in ovarian cancer. The overexpression of HVEM promoted cell proliferation and inhibited cell apoptosis under hypoxic condition. HVEM overexpression elevated the expression of HIF-1α and Bcl-2 (anti-apoptotic protein), and reduced the expression of Bax (pro-apoptotic protein). In addition, overexpression of HVEM activated the AKT/mTOR signaling. Moreover, knockdown of HVEM had the completely opposite effects. Conclusion These data indicated that HVEM signaling might promote HIF-1α activity via AKT/mTOR signaling pathway and thus to regulate tumor growth in ovarian cancer under the hypoxic conditions. Furthermore, these findings indicate that this molecular mechanism could represent a therapeutic target for ovarian cancer.
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Affiliation(s)
- Liyan Duan
- Shanghai First Maternity and Infant Hospital, Tongji University School of Medicine, Shanghai, China
| | - Jie Tao
- Shanghai First Maternity and Infant Hospital, Tongji University School of Medicine, Shanghai, China
| | - Xiaoqian Yang
- Shanghai First Maternity and Infant Hospital, Tongji University School of Medicine, Shanghai, China
| | - Lei Ye
- Shanghai First Maternity and Infant Hospital, Tongji University School of Medicine, Shanghai, China
| | - Yueqian Wu
- Shanghai First Maternity and Infant Hospital, Tongji University School of Medicine, Shanghai, China
| | - Qizhi He
- Shanghai First Maternity and Infant Hospital, Tongji University School of Medicine, Shanghai, China
| | - Yingchun Duan
- Department of Gynecology and Obstetrics, Shanghai Pudong Hospital, Fudan University School of Medicine, No. 2800 Gongwei Road, Pudong New Area, Shanghai, 201399, China
| | - Li Chen
- Department of Gynecology and Obstetrics, Shanghai Pudong Hospital, Fudan University School of Medicine, No. 2800 Gongwei Road, Pudong New Area, Shanghai, 201399, China
| | - Jianlong Zhu
- Shanghai First Maternity and Infant Hospital, Tongji University School of Medicine, Shanghai, China. .,Department of Gynecology and Obstetrics, Shanghai Pudong Hospital, Fudan University School of Medicine, No. 2800 Gongwei Road, Pudong New Area, Shanghai, 201399, China.
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13
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Huang Y, Wang X, Lin H. The hypoxic microenvironment: a driving force for heterotopic ossification progression. Cell Commun Signal 2020; 18:20. [PMID: 32028956 PMCID: PMC7006203 DOI: 10.1186/s12964-020-0509-1] [Citation(s) in RCA: 12] [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] [Subscribe] [Scholar Register] [Received: 10/25/2019] [Accepted: 01/02/2020] [Indexed: 12/23/2022] Open
Abstract
Heterotopic ossification (HO) refers to the formation of bone tissue outside the normal skeletal system. According to its pathogenesis, HO is divided into hereditary HO and acquired HO. There currently lack effective approaches for HO prevention or treatment. A deep understanding of its pathogenesis will provide promising strategies to prevent and treat HO. Studies have shown that the hypoxia-adaptive microenvironment generated after trauma is a potent stimulus of HO. The hypoxic microenvironment enhances the stability of hypoxia-inducible factor-1α (HIF-1α), which regulates a complex network including bone morphogenetic proteins (BMPs), vascular endothelial growth factor (VEGF), and neuropilin-1 (NRP-1), which are implicated in the formation of ectopic bone. In this review, we summarize the current understanding of the triggering role and underlying molecular mechanisms of the hypoxic microenvironment in the initiation and progression of HO, focusing mainly on HIF-1 and it's influenced genes BMP, VEGF, and NRP-1. A better understanding of the role of hypoxia in HO unveils novel therapeutic targets for HO that reduce the local hypoxic microenvironment and inhibit HIF-1α activity. Video Abstract. (MP4 52403 kb)
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Affiliation(s)
- Yifei Huang
- First Clinical Medical School, Nanchang University, Nanchang, 330006, Jiangxi Province, China
| | - Xinyi Wang
- First Clinical Medical School, Nanchang University, Nanchang, 330006, Jiangxi Province, China
| | - Hui Lin
- Department of Pathophysiology, School of Basic Medical Sciences, Nanchang University, 461 BaYi Avenue, Nanchang, 330006, Jiangxi Province, China.
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14
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Silva-Filho AF, Sena WLB, Lima LRA, Carvalho LVN, Pereira MC, Santos LGS, Santos RVC, Tavares LB, Pitta MGR, Rêgo MJBM. Glycobiology Modifications in Intratumoral Hypoxia: The Breathless Side of Glycans Interaction. Cell Physiol Biochem 2017; 41:1801-1829. [PMID: 28376491 DOI: 10.1159/000471912] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [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: 10/13/2016] [Accepted: 01/17/2017] [Indexed: 11/19/2022] Open
Abstract
Post-translational and co-translational enzymatic addition of glycans (glycosylation) to proteins, lipids, and other carbohydrates, is a powerful regulator of the molecular machinery involved in cell cycle, adhesion, invasion, and signal transduction, and is usually seen in both in vivo and in vitro cancer models. Glycosyltransferases can alter the glycosylation pattern of normal cells, subsequently leading to the establishment and progression of several diseases, including cancer. Furthermore, a growing amount of research has shown that different oxygen tensions, mainly hypoxia, leads to a markedly altered glycosylation, resulting in altered glycan-receptor interactions. Alteration of intracellular glucose metabolism, from aerobic cellular respiration to anaerobic glycolysis, inhibition of integrin 3α1β translocation to the plasma membrane, decreased 1,2-fucosylation of cell-surface glycans, and galectin overexpression are some consequences of the hypoxic tumor microenvironment. Additionally, increased expression of gangliosides carrying N-glycolyl sialic acid can also be significantly affected by hypoxia. For all these reasons, it is possible to realize that hypoxia strongly alters glycobiologic events within tumors, leading to changes in their behavior. This review aims to analyze the complexity and importance of glycoconjugates and their molecular interaction network in the hypoxic context of many solid tumors.
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Affiliation(s)
- Antônio F Silva-Filho
- Laboratory of Immunomodulation and New Therapeutic Approaches (LINAT), Center for Research on Therapeutic Innovation - Suely Galdino (NUPIT-SG-UFPE), Recife, Brazil
| | - Wanessa L B Sena
- Laboratory of Immunomodulation and New Therapeutic Approaches (LINAT), Center for Research on Therapeutic Innovation - Suely Galdino (NUPIT-SG-UFPE), Recife, Brazil
| | - Luiza R A Lima
- Laboratory of Immunomodulation and New Therapeutic Approaches (LINAT), Center for Research on Therapeutic Innovation - Suely Galdino (NUPIT-SG-UFPE), Recife, Brazil.,Faculdades Integradas de Patos, Patos, Brazil
| | - Lidiane V N Carvalho
- Laboratory of Immunomodulation and New Therapeutic Approaches (LINAT), Center for Research on Therapeutic Innovation - Suely Galdino (NUPIT-SG-UFPE), Recife, Brazil
| | - Michelly C Pereira
- Laboratory of Immunomodulation and New Therapeutic Approaches (LINAT), Center for Research on Therapeutic Innovation - Suely Galdino (NUPIT-SG-UFPE), Recife, Brazil.,Department of Physiology and Pharmacology, Federal University of Pernambuco (UFPE), Recife, Brazil
| | - Lucas G S Santos
- Laboratory of Immunomodulation and New Therapeutic Approaches (LINAT), Center for Research on Therapeutic Innovation - Suely Galdino (NUPIT-SG-UFPE), Recife, Brazil
| | - Renata V C Santos
- Laboratory of Immunomodulation and New Therapeutic Approaches (LINAT), Center for Research on Therapeutic Innovation - Suely Galdino (NUPIT-SG-UFPE), Recife, Brazil
| | - Lucas B Tavares
- Laboratory of Immunomodulation and New Therapeutic Approaches (LINAT), Center for Research on Therapeutic Innovation - Suely Galdino (NUPIT-SG-UFPE), Recife, Brazil
| | - Maira G R Pitta
- Laboratory of Immunomodulation and New Therapeutic Approaches (LINAT), Center for Research on Therapeutic Innovation - Suely Galdino (NUPIT-SG-UFPE), Recife, Brazil.,Department of Biochemistry, Federal University of Pernambuco (UFPE), Recife, Brazil
| | - Moacyr J B M Rêgo
- Laboratory of Immunomodulation and New Therapeutic Approaches (LINAT), Center for Research on Therapeutic Innovation - Suely Galdino (NUPIT-SG-UFPE), Recife, Brazil.,Department of Biochemistry, Federal University of Pernambuco (UFPE), Recife, Brazil
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15
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Kimura W, Sadek HA. The cardiac hypoxic niche: emerging role of hypoxic microenvironment in cardiac progenitors. Cardiovasc Diagn Ther 2013; 2:278-89. [PMID: 24282728 DOI: 10.3978/j.issn.2223-3652.2012.12.02] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2012] [Accepted: 12/10/2012] [Indexed: 12/11/2022]
Abstract
Resident stem cells persist throughout the entire lifetime of an organism where they replenishing damaged cells. Numerous types of resident stem cells are housed in a low-oxygen tension (hypoxic) microenvironment, or niches, which seem to be critical for survival and maintenance of stem cells. Recently our group has identified the adult mammalian epicardium and subepicardium as a hypoxic niche for cardiac progenitor cells. Similar to hematopoietic stem cells (LT-HSCs), progenitor cells in the hypoxic epicardial niche utilize cytoplasmic glycolysis instead of mitochondrial oxidative phosphorylation, where hypoxia inducible factor 1α (Hif-1α) maintains them in glycolytic undifferentiated state. In this review we summarize the relationship between hypoxic signaling and stem cell function, and discuss potential roles of several cardiac stem/progenitor cells in cardiac homeostasis and regeneration.
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Affiliation(s)
- Wataru Kimura
- Department of Internal Medicine, Division of Cardiology, UT Southwestern Medical Center, Dallas, TX, USA
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