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Wang H, Yang X, Lai H, Sun Y, Yan X, Ai Q, Lin M, Yang S, Yang Y, Chu S, Wang Z, Chen N. Novel antidepressant mechanism of hypericin: Role of connexin 43-based gap junctions. Biomed Pharmacother 2023; 167:115545. [PMID: 37734259 DOI: 10.1016/j.biopha.2023.115545] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2023] [Revised: 09/13/2023] [Accepted: 09/18/2023] [Indexed: 09/23/2023] Open
Abstract
Hypericin is widely utilized for its precise antidepressant properties, but its exact antidepressant mechanism remains unclear. Gap junctions, which were predominantly expressed in astrocytes in the central nervous system, are concerned with the pathogenesis of depression. However, the role of hypericin in gap junctional dysfunction in depression has rarely been investigated. Here, we found that gap junctions were ultra-structurally broadened in the chronic unpredictable stress (CUS) rat model of depression, while hypericin repaired the dysfunction of gap junctions. Suppression of gap junctions by bilateral injection of carbenoxolone (CBX) in the prefrontal cortex of rats significantly inhibited the restoration of gap junctional dysfunction in depression by hypericin. Meanwhile, hypericin failed to show antidepressant benefits. Furthermore, in corticosterone (CORT)-stimulated primary astrocytes derived from neonatal rats, hypericin dramatically reversed the phosphorylation of connexin 43 (Cx43), normalizing the expression of Cx43 and thereby ameliorating gap junctional dysfunction. Comparatively, CBX inhibited the remission of hypericin on gap junctional intercellular communication function. Gap junctional function might be a novel therapeutic target for hypericin in the treatment of depression and provide potential novel insights into the antidepressant mechanism of other herbal ingredients.
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Affiliation(s)
- Huiqin Wang
- Hunan University of Chinese Medicine & Hunan Engineering Technology Center of Standardization and Function of Chinese Herbal Decoction Pieces, Changsha 410208, Hunan, China; State Key Laboratory of Bioactive Substances and Functions of Natural Medicines, Institute of Materia Medica & Neuroscience Center, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100050, China
| | - Xueying Yang
- School of Chinese Materia Medica, Guangdong Pharmaceutical University, Guangzhou 510006, Guangdong, China
| | - Huaqing Lai
- Science and Technology Innovation Center, Guangzhou University of Chinese Medicine, Guangzhou 510405, Guangdong, China
| | - Yang Sun
- Hunan University of Chinese Medicine & Hunan Engineering Technology Center of Standardization and Function of Chinese Herbal Decoction Pieces, Changsha 410208, Hunan, China
| | - Xu Yan
- State Key Laboratory of Bioactive Substances and Functions of Natural Medicines, Institute of Materia Medica & Neuroscience Center, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100050, China
| | - Qidi Ai
- Hunan University of Chinese Medicine & Hunan Engineering Technology Center of Standardization and Function of Chinese Herbal Decoction Pieces, Changsha 410208, Hunan, China
| | - Meiyu Lin
- Hunan University of Chinese Medicine & Hunan Engineering Technology Center of Standardization and Function of Chinese Herbal Decoction Pieces, Changsha 410208, Hunan, China
| | - Songwei Yang
- Hunan University of Chinese Medicine & Hunan Engineering Technology Center of Standardization and Function of Chinese Herbal Decoction Pieces, Changsha 410208, Hunan, China
| | - Yantao Yang
- Hunan University of Chinese Medicine & Hunan Engineering Technology Center of Standardization and Function of Chinese Herbal Decoction Pieces, Changsha 410208, Hunan, China
| | - Shifeng Chu
- State Key Laboratory of Bioactive Substances and Functions of Natural Medicines, Institute of Materia Medica & Neuroscience Center, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100050, China
| | - Zhenzhen Wang
- State Key Laboratory of Bioactive Substances and Functions of Natural Medicines, Institute of Materia Medica & Neuroscience Center, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100050, China.
| | - Naihong Chen
- Hunan University of Chinese Medicine & Hunan Engineering Technology Center of Standardization and Function of Chinese Herbal Decoction Pieces, Changsha 410208, Hunan, China; State Key Laboratory of Bioactive Substances and Functions of Natural Medicines, Institute of Materia Medica & Neuroscience Center, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100050, China.
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Zeng W, Deng Z, Gao Y, Sun G, Li X, Yuan D. Downregulation of connexin 43-based gap junctions underlies propofol-induced excessive relaxation in hypertensive vascular smooth muscle cells. Cell Commun Signal 2023; 21:163. [PMID: 37381027 DOI: 10.1186/s12964-023-01176-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2023] [Accepted: 05/25/2023] [Indexed: 06/30/2023] Open
Abstract
BACKGROUND Postinduction hypotension caused by propofol remains a non-negligible problem for anesthesiologists, and is especially severe in chronic hypertensive patients with long-term vasoconstriction and decreased vascular elasticity. The functional change in gap junctions composed of Cx43 (Cx43-GJs) is reported as the biological basis of synchronized contraction or relaxation of blood vessels. Thus, we investigated the role of Cx43-GJs in propofol-induced dramatic blood pressure fluctuations in chronic hypertensive patients, and their internal mechanisms. METHODS Human umbilical artery smooth muscle cells (HUASMCs) were pretreated with long-term angiotensin II (Ang II), with or without propofol, to simulate the contraction and relaxation of normal and hypertensive VSMCs during anesthesia induction. The levels of F-actin polymerization and MLC2 phosphorylation were used as indicators to observe the contraction and relaxation of HUASMCs. Different specific activators, inhibitors and siRNAs were used to explore the role of Cx43-GJs and Ca2+ as well as the RhoA/ LIMK2/cofilin and RhoA/MLCK signaling pathways in the contraction and relaxation of normal and hypertensive HUASMCs. RESULTS Both F-actin polymerization and MLC2 phosphorylation were significantly enhanced in Ang II-pretreated HUASMCs, along with higher expression of Cx43 protein and stronger function of Cx43-GJs than in normal HUASMCs. However, with propofol administration, similar to Gap26 and Cx43-siRNA, the function of Cx43-GJs in Ang II-pretreated HUASMCs was inhibited compared with that in normal HUASMCs, accompanied by a larger decrease in intracellular Ca2+ and the RhoA/LIMK2/cofilin and RhoA/MLCK signaling pathways. Eventually F-actin polymerization and MLC2 phosphorylation were more dramatically decreased. However, these effects could be reversed by RA with enhanced Cx43-GJ function. CONCLUSION Long-term exposure to Ang II significantly enhanced the expression of the Cx43 protein and function of Cx43-GJs in HUASMCs, resulting in the accumulation of intracellular Ca2+ and the activation of its downstream RhoA/LIMK2/cofilin and RhoA/MLCK signaling pathways, which maintained HUASMCs in a state of excessive-contraction. With inhibition of Cx43-GJs by propofol in Ang II-pretreated HUASMCs, intracellular Ca2+ and its downstream signaling pathways were dramatically inhibited, which ultimately excessively relaxed HUASMCs. This is the reason why the blood pressure fluctuation of patients with chronic hypertension was more severe after receiving propofol induction. Video Abstract.
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Affiliation(s)
- Weiqi Zeng
- Department of Anesthesiology, Third Affiliated Hospital of Sun Yat-Sen University, Guangzhou, 510630, Guangdong, China
| | - Zhizhao Deng
- Department of Anesthesiology, Third Affiliated Hospital of Sun Yat-Sen University, Guangzhou, 510630, Guangdong, China
| | - Yingxin Gao
- Department of Anesthesiology, Third Affiliated Hospital of Sun Yat-Sen University, Guangzhou, 510630, Guangdong, China
| | - Guoliang Sun
- Department of Anesthesiology, Third Affiliated Hospital of Sun Yat-Sen University, Guangzhou, 510630, Guangdong, China.
| | - Xianlong Li
- Department of Anesthesiology, Third Affiliated Hospital of Sun Yat-Sen University, Guangzhou, 510630, Guangdong, China.
| | - Dongdong Yuan
- Department of Anesthesiology, Third Affiliated Hospital of Sun Yat-Sen University, Guangzhou, 510630, Guangdong, China.
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Li X, Xiao Y, Wang X, Huang R, Wang R, Deng Y, Rao J, Gao Q, Yang S, Zhang X. Connexin 43-modified bone marrow stromal cells reverse the imatinib resistance of K562 cells via Ca 2+ -dependent gap junction intercellular communication. Chin Med J (Engl) 2023; 136:194-206. [PMID: 36801891 PMCID: PMC10106204 DOI: 10.1097/cm9.0000000000002554] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2022] [Indexed: 02/23/2023] Open
Abstract
BACKGROUND Imatinib mesylate (IM) resistance is an emerging problem for chronic myeloid leukemia (CML). Previous studies found that connexin 43 (Cx43) deficiency in the hematopoietic microenvironment (HM) protects minimal residual disease (MRD), but the mechanism remains unknown. METHODS Immunohistochemistry assays were employed to compare the expression of Cx43 and hypoxia-inducible factor 1α (HIF-1α) in bone marrow (BM) biopsies of CML patients and healthy donors. A coculture system of K562 cells and several Cx43-modified bone marrow stromal cells (BMSCs) was established under IM treatment. Proliferation, cell cycle, apoptosis, and other indicators of K562 cells in different groups were detected to investigate the function and possible mechanism of Cx43. We assessed the Ca 2+ -related pathway by Western blotting. Tumor-bearing models were also established to validate the causal role of Cx43 in reversing IM resistance. RESULTS Low levels of Cx43 in BMs were observed in CML patients, and Cx43 expression was negatively correlated with HIF-1α. We also observed that K562 cells cocultured with BMSCs transfected with adenovirus-short hairpin RNA of Cx43 (BMSCs-shCx43) had a lower apoptosis rate and that their cell cycle was blocked in G0/G1 phase, while the result was the opposite in the Cx43-overexpression setting. Cx43 mediates gap junction intercellular communication (GJIC) through direct contact, and Ca 2+ is the key factor mediating the downstream apoptotic pathway. In animal experiments, mice bearing K562, and BMSCs-Cx43 had the smallest tumor volume and spleen, which was consistent with the in vitro experiments. CONCLUSIONS Cx43 deficiency exists in CML patients, promoting the generation of MRD and inducing drug resistance. Enhancing Cx43 expression and GJIC function in the HM may be a novel strategy to reverse drug resistance and promote IM efficacy.
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Affiliation(s)
- Xiaoping Li
- Department of Hematology, 920th Hospital of Joint Logistic Support Force of People's Liberation, Kunming, Yunnan 650000, China
| | - Yunshuo Xiao
- Medical Center of Hematology, Xinqiao Hospital, State Key Laboratory of Trauma, Burn and Combined Injury, Army Medical University, Chongqing 400037, China
| | - Xiaoqi Wang
- Medical Center of Hematology, Xinqiao Hospital, State Key Laboratory of Trauma, Burn and Combined Injury, Army Medical University, Chongqing 400037, China
| | - Ruihao Huang
- Medical Center of Hematology, Xinqiao Hospital, State Key Laboratory of Trauma, Burn and Combined Injury, Army Medical University, Chongqing 400037, China
| | - Rui Wang
- Medical Center of Hematology, Xinqiao Hospital, State Key Laboratory of Trauma, Burn and Combined Injury, Army Medical University, Chongqing 400037, China
| | - Yi Deng
- Medical Center of Hematology, Xinqiao Hospital, State Key Laboratory of Trauma, Burn and Combined Injury, Army Medical University, Chongqing 400037, China
| | - Jun Rao
- Medical Center of Hematology, Xinqiao Hospital, State Key Laboratory of Trauma, Burn and Combined Injury, Army Medical University, Chongqing 400037, China
| | - Qiangguo Gao
- Department of Cell Biology College of Basic Medicine, Army Medical University, Chongqing 400038, China
| | - Shijie Yang
- Medical Center of Hematology, Xinqiao Hospital, State Key Laboratory of Trauma, Burn and Combined Injury, Army Medical University, Chongqing 400037, China
| | - Xi Zhang
- Medical Center of Hematology, Xinqiao Hospital, State Key Laboratory of Trauma, Burn and Combined Injury, Army Medical University, Chongqing 400037, China
- Jinfeng Laboratory, Chongqing 401329, China
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Guo L, Zhang Y, Liu H, Cheng Q, Yang S, Yang D. All-trans retinoic acid inhibits the osteogenesis of periodontal ligament stem cells by promoting IL-1β production via NF-κB signaling. Int Immunopharmacol 2022; 108:108757. [DOI: 10.1016/j.intimp.2022.108757] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2022] [Revised: 03/26/2022] [Accepted: 04/01/2022] [Indexed: 12/11/2022]
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Zhou X, Li M, Cheng Q, Shao Y, Wang W, Du Q, Liu J, Yang Y. Methylselenocysteine Potentiates Etoposide-Induced Cytotoxicity by Enhancing Gap Junction Activity. Biol Pharm Bull 2022; 45:467-476. [DOI: 10.1248/bpb.b21-00893] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Affiliation(s)
- Xueli Zhou
- Department of Medical Oncology, The First Affiliated Hospital of Bengbu Medical College
| | - Man Li
- Department of Medical Oncology, The First Affiliated Hospital of Bengbu Medical College
| | - Qianqian Cheng
- Department of Medical Oncology, The First Affiliated Hospital of Bengbu Medical College
| | - Yu Shao
- Department of Medical Oncology, The First Affiliated Hospital of Bengbu Medical College
| | - Wei Wang
- Department of Medical Oncology, The First Affiliated Hospital of Bengbu Medical College
| | - Qianyu Du
- Department of Medical Oncology, The First Affiliated Hospital of Bengbu Medical College
| | - Jing Liu
- Department of Medical Oncology, The First Affiliated Hospital of Bengbu Medical College
| | - Yan Yang
- Department of Medical Oncology, The First Affiliated Hospital of Bengbu Medical College
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Abdelaal MR, Soror SH, Elnagar MR, Haffez H. Revealing the Potential Application of EC-Synthetic Retinoid Analogues in Anticancer Therapy. Molecules 2021; 26:molecules26020506. [PMID: 33477997 PMCID: PMC7835894 DOI: 10.3390/molecules26020506] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2020] [Revised: 12/31/2020] [Accepted: 01/08/2021] [Indexed: 12/12/2022] Open
Abstract
(1) Background and Aim: All-trans retinoic acid (ATRA) induces differentiation and inhibits growth of many cancer cells. However, resistance develops rapidly prompting the urgent need for new synthetic and potent derivatives. EC19 and EC23 are two synthetic retinoids with potent stem cell neuro-differentiation activity. Here, these compounds were screened for their in vitro antiproliferative and cytotoxic activity using an array of different cancer cell lines. (2) Methods: MTT (3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide) assay, AV/PI (annexin V-fluorescein isothiocyanate (FITC)/propidium iodide (PI)), cell cycle analysis, immunocytochemistry, gene expression analysis, Western blotting, measurement of glutamate and total antioxidant concentrations were recruited. (3) Results: HepG2, Caco-2, and MCF-7 were the most sensitive cell lines; HepG2 (ATRA; 36.2, EC19; 42.2 and EC23; 0.74 µM), Caco-2 (ATRA; 58.0, EC19; 10.8 and EC23; 14.7 µM) and MCF-7 (ATRA; 99.0, EC19; 9.4 and EC23; 5.56 µM). Caco-2 cells were selected for further biochemical investigations. Isobologram analysis revealed the combined synergistic effects with 5-fluorouracil with substantial reduction in IC50. All retinoids induced apoptosis but EC19 had higher potency, with significant cell cycle arrest at subG0-G1, -S and G2/M phases, than ATRA and EC23. Moreover, EC19 reduced cellular metastasis in a transwell invasion assay due to overexpression of E-cadherin, retinoic acid-induced 2 (RAI2) and Werner (WRN) genes. (4) Conclusion: The present study suggests that EC-synthetic retinoids, particularly EC19, can be effective, alone or in combinations, for potential anticancer activity to colorectal cancer. Further in vivo studies are recommended to pave the way for clinical applications.
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Affiliation(s)
- Mohamed R. Abdelaal
- Biochemistry and Molecular Biology Department, Faculty of Pharmacy, Helwan University, Cairo 11795, Egypt; (M.R.A.); (S.H.S.)
- Center of Scientific Excellence “Helwan Structural Biology Research, (HSBR)”, Helwan University, Cairo 11795, Egypt
| | - Sameh H. Soror
- Biochemistry and Molecular Biology Department, Faculty of Pharmacy, Helwan University, Cairo 11795, Egypt; (M.R.A.); (S.H.S.)
- Center of Scientific Excellence “Helwan Structural Biology Research, (HSBR)”, Helwan University, Cairo 11795, Egypt
| | - Mohamed R. Elnagar
- Department of Pharmacology and Toxicology, Faculty of Pharmacy, Al-Azhar University, Cairo 11823, Egypt;
| | - Hesham Haffez
- Biochemistry and Molecular Biology Department, Faculty of Pharmacy, Helwan University, Cairo 11795, Egypt; (M.R.A.); (S.H.S.)
- Center of Scientific Excellence “Helwan Structural Biology Research, (HSBR)”, Helwan University, Cairo 11795, Egypt
- Correspondence: ; Tel.: +20-1094970173
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Li C, Shi L, Peng C, Yu G, Zhang Y, Du Z. Lead-induced cardiomyocytes apoptosis by inhibiting gap junction intercellular communication via autophagy activation. Chem Biol Interact 2020; 337:109331. [PMID: 33242459 DOI: 10.1016/j.cbi.2020.109331] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2020] [Revised: 11/01/2020] [Accepted: 11/20/2020] [Indexed: 12/15/2022]
Abstract
Lead (Pb) is one of the most common heavy metal contaminants in the environment. Pb can cause pathophysiological changes in several organ systems, including the cardiovascular system, but the molecular mechanism remains elusive. The study aimed to study the effects of Pb on Gap junction intercellular communication (GJIC) and its role in Pb-induced apoptosis. The present study aims to determine whether Pb-induced autophagy promotes apoptosis of rat cardiac myocytes (H9c2 cells) by downregulating GJIC using CCK-8 Kit, scrape loading/dye transfer assay, Annexin V/PI assays, Western blot analysis and double-immunofluorescence experiments. The results showed that Pb elicited cytotoxicity in a time- and concentration-dependent manner and led to increased apoptosis in a concentration-dependent manner in H9c2 cells. Pb also reduced GJIC in H9c2 cells in a concentration-dependent manner through the downregulation of connexin (Cx) 43. Inhibition of gap junctions by gap junction blocker carbenoxolone disodium (CBX) resulted in increased apoptosis. Furthermore, Pb increased autophagy in a concentration-dependent manner in H9c2 cells, decreasing the distribution of Cx43 on the cell membrane, and targeted Cx43 to autophagosome via light chain 3 (LC3). However, autophagy inhibitor 3-Methyladenine (3-MA) can slow down the downregulation of Cx43 induced by Pb in H9c2 cells. In conclusion, our results provide evidence that Pb-decreased GJIC promotes apoptosis in cardiomyocytes. This is probably because of the fact that Pb-induced autophagy exacerbates GJIC inhibition and downregulation of Cx43.
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Affiliation(s)
- Chao Li
- School of Public Health, North China University of Science and Technology, Tangshan, 063210, Hebei, China; Shandong Academy of Occupational Health and Occupational Medicine, Shandong First Medical University & Shandong Academy of Medical Sciences, Ji'nan, 250062, Shandong, China
| | - Liang Shi
- Biomedical Sciences College & Shandong Medicinal Biotechnology Centre, Shandong First Medical University & Shandong Academy of Medical Sciences, Ji'nan, 250062, Shandong, China
| | - Cheng Peng
- Shandong Academy of Occupational Health and Occupational Medicine, Shandong First Medical University & Shandong Academy of Medical Sciences, Ji'nan, 250062, Shandong, China; Queensland Alliance for Environmental Health Sciences (QAEHS), The University of Queensland, Brisbane, 4108, Queensland, Australia
| | - Gongchang Yu
- Shandong Academy of Occupational Health and Occupational Medicine, Shandong First Medical University & Shandong Academy of Medical Sciences, Ji'nan, 250062, Shandong, China
| | - Yanshu Zhang
- School of Public Health, North China University of Science and Technology, Tangshan, 063210, Hebei, China; Laboratory Animal Center, North China University of Science and Technology, Tangshan, 063210, Hebei, China.
| | - Zhongjun Du
- Shandong Academy of Occupational Health and Occupational Medicine, Shandong First Medical University & Shandong Academy of Medical Sciences, Ji'nan, 250062, Shandong, China.
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Nan W, Li G, Si H, Lou Y, Wang D, Guo R, Zhang H. All-trans-retinoic acid inhibits mink hair follicle growth via inhibiting proliferation and inducing apoptosis of dermal papilla cells through TGF-β2/Smad2/3 pathway. Acta Histochem 2020; 122:151603. [PMID: 33066831 DOI: 10.1016/j.acthis.2020.151603] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2020] [Revised: 07/21/2020] [Accepted: 08/03/2020] [Indexed: 12/23/2022]
Abstract
Dermal papilla cells (DPCs), an important component of hair follicles, its proliferation and apoptosis directly regulate and maintain the growth of hair follicles. All-trans-retinoic acid (ATRA) plays a critical role in hair growth. In this study, the effects of ATRA on cultured mink hair follicle growth were studied by administration of different concentrations of ATRA for 12 days in vitro. In addition, the proliferation and apoptosis of DPCs were measured after treating with ATRA. The mRNA and protein levels of hair follicle growth associated factor transforming growth factor-β2 (TGF-β2) and the phosphorylation levels of Smad2/3 were determined. Moreover, TGF-β type I and type II receptor inhibitor LY2109761 and specific inhibitor of Smad3 (SIS3) were administered to investigate the underlying molecular mechanism. The results showed that ATRA inhibited hair follicle growth, promoted TGF-β2 expression and activated phosphorylation of Smad2/3. In addition, ATRA inhibited cell proliferation by arresting the cell cycle at G1 phase and induced apoptosis of DPCs by enhancing the ratio of Bax/Bcl-2 and promoted the cleavage of caspase-3. Furthermore, LY2109761 or SIS3 partially reversed the decreased cell viability, increased apoptosis that were induced by ATRA. In conclusion, ATRA could inhibit hair follicle growth via inhibiting proliferation and inducing apoptosis of DPCs partially through the TGF-β2/Smad2/3 pathway.
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Affiliation(s)
- Weixiao Nan
- College of Animal Science and Technology, Jilin Agricultural University, Changchun, Jilin, 130118, People's Republic of China; State Key Laboratory of Special Economic Animal Molecular Biology, Institute of Special Animal and Plant Sciences, Chinese Academy of Agricultural Sciences, Changchun, Jilin, 130112, People's Republic of China
| | - Guangyu Li
- State Key Laboratory of Special Economic Animal Molecular Biology, Institute of Special Animal and Plant Sciences, Chinese Academy of Agricultural Sciences, Changchun, Jilin, 130112, People's Republic of China
| | - Huazhe Si
- College of Animal Science and Technology, Jilin Agricultural University, Changchun, Jilin, 130118, People's Republic of China; State Key Laboratory of Special Economic Animal Molecular Biology, Institute of Special Animal and Plant Sciences, Chinese Academy of Agricultural Sciences, Changchun, Jilin, 130112, People's Republic of China
| | - Yujie Lou
- College of Animal Science and Technology, Jilin Agricultural University, Changchun, Jilin, 130118, People's Republic of China.
| | - Dianyong Wang
- Changli Animal Disease Prevention and Control Center, Changli, Hebei, 066600, People's Republic of China
| | - Rui Guo
- Changli Animal Disease Prevention and Control Center, Changli, Hebei, 066600, People's Republic of China
| | - Haihua Zhang
- College of Animal Science and Technology, Hebei Normal University of Science and Technology, Qinhuangdao, Hebei, 066004, People's Republic of China; State Key Laboratory of Special Economic Animal Molecular Biology, Institute of Special Animal and Plant Sciences, Chinese Academy of Agricultural Sciences, Changchun, Jilin, 130112, People's Republic of China.
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Harada T, Tsuboi I, Utsunomiya M, Yasuda M, Aizawa S. Kinetics of leukemic cells in 3D culture with stromal cells and with arginine deprivation stress. J Biosci Bioeng 2020; 130:650-658. [PMID: 32861594 DOI: 10.1016/j.jbiosc.2020.07.018] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2020] [Revised: 07/08/2020] [Accepted: 07/28/2020] [Indexed: 01/20/2023]
Abstract
Previously, we established a three-dimensional (3D) bone marrow culture system that maintains normal hematopoiesis, including prolongation of hematopoietic stem cell proliferation and differentiation. To analyze the role of bone marrow stromal cells that compose the microenvironment, the growth of a leukemic cell line (K562) in the 3D condition and with arginine deprivation stress was compared with two-dimensional stromal cell monolayers (2D) and suspension cultures without stromal cells (stroma (-)). Arginine is essential for the proliferation and differentiation of erythrocytes. The proliferation and differentiation of K562 cells cultured in the 3D system were stabilized compared with cells in 2D or stroma (-). Furthermore, the number of K562 cells in the G0/G1 phase in 3D was increased significantly compared with cells grown in 2D or stroma (-). Interestingly, the mRNA expression of various hematopoietic growth factors of stromal cells in 3D was not different from 2D, even though supportive activity on K562 cell growth was observed in the arginine deprivation condition. Thus, the hematopoietic microenvironment involves multi-dimensional and complex systems including biochemical and physiochemical factors that regulate quiescence, proliferation, activation, and differentiation of normal hematopoietic cells and cloned leukemic cells. Our 3D culture system may be a valuable new tool for investigating leukemic cell-stromal cell interactions in vitro.
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Affiliation(s)
- Tomonori Harada
- Department of Functional Morphology, Nihon University School of Medicine, 30-1 Oyaguchikamicho, Itabashi-ku, Tokyo 173-8610, Japan.
| | - Isao Tsuboi
- Department of Functional Morphology, Nihon University School of Medicine, 30-1 Oyaguchikamicho, Itabashi-ku, Tokyo 173-8610, Japan.
| | - Mizuki Utsunomiya
- Department of Chemical Engineering, Osaka Prefecture University, 1-1 Gakuen-cho, Naka-ku, Sakai, Osaka 599-8531, Japan.
| | - Masahiro Yasuda
- Department of Chemical Engineering, Osaka Prefecture University, 1-1 Gakuen-cho, Naka-ku, Sakai, Osaka 599-8531, Japan.
| | - Shin Aizawa
- Department of Functional Morphology, Nihon University School of Medicine, 30-1 Oyaguchikamicho, Itabashi-ku, Tokyo 173-8610, Japan.
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Loss of Cx43 in Murine Sertoli Cells Leads to Altered Prepubertal Sertoli Cell Maturation and Impairment of the Mitosis-Meiosis Switch. Cells 2020; 9:cells9030676. [PMID: 32164318 PMCID: PMC7140672 DOI: 10.3390/cells9030676] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2020] [Revised: 03/04/2020] [Accepted: 03/05/2020] [Indexed: 12/12/2022] Open
Abstract
Male factor infertility is a problem in today’s society but many underlying causes are still unknown. The generation of a conditional Sertoli cell (SC)-specific connexin 43 (Cx43) knockout mouse line (SCCx43KO) has provided a translational model. Expression of the gap junction protein Cx43 between adjacent SCs as well as between SCs and germ cells (GCs) is known to be essential for the initiation and maintenance of spermatogenesis in different species and men. Adult SCCx43KO males show altered spermatogenesis and are infertile. Thus, the present study aims to identify molecular mechanisms leading to testicular alterations in prepubertal SCCx43KO mice. Transcriptome analysis of 8-, 10- and 12-day-old mice was performed by next-generation sequencing (NGS). Additionally, candidate genes were examined by qRT-PCR and immunohistochemistry. NGS revealed many significantly differentially expressed genes in the SCCx43KO mice. For example, GC-specific genes were mostly downregulated and found to be involved in meiosis and spermatogonial differentiation (e.g., Dmrtb1, Sohlh1). In contrast, SC-specific genes implicated in SC maturation and proliferation were mostly upregulated (e.g., Amh, Fshr). In conclusion, Cx43 in SCs appears to be required for normal progression of the first wave of spermatogenesis, especially for the mitosis-meiosis switch, and also for the regulation of prepubertal SC maturation.
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Singh AK, Cancelas JA. Gap Junctions in the Bone Marrow Lympho-Hematopoietic Stem Cell Niche, Leukemia Progression, and Chemoresistance. Int J Mol Sci 2020; 21:E796. [PMID: 31991829 PMCID: PMC7038046 DOI: 10.3390/ijms21030796] [Citation(s) in RCA: 22] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2019] [Revised: 01/19/2020] [Accepted: 01/23/2020] [Indexed: 12/15/2022] Open
Abstract
Abstract: The crosstalk between hematopoietic stem cells (HSC) and bone marrow (BM) microenvironment is critical for homeostasis and hematopoietic regeneration in response to blood formation emergencies after injury, and has been associated with leukemia transformation and progression. Intercellular signals by the BM stromal cells in the form of cell-bound or secreted factors, or by physical interaction, regulate HSC localization, maintenance, and differentiation within increasingly defined BM HSC niches. Gap junctions (GJ) are comprised of arrays of membrane embedded channels formed by connexin proteins, and control crucial signaling functions, including the transfer of ions, small metabolites, and organelles to adjacent cells which affect intracellular mechanisms of signaling and autophagy. This review will discuss the role of GJ in both normal and leukemic hematopoiesis, and highlight some of the most novel approaches that may improve the efficacy of cytotoxic drugs. Connexin GJ channels exert both cell-intrinsic and cell-extrinsic effects on HSC and BM stromal cells, involved in regenerative hematopoiesis after myelosuppression, and represent an alternative system of cell communication through a combination of electrical and metabolic coupling as well as organelle transfer in the HSC niche. GJ intercellular communication (GJIC) in the HSC niche improves cellular bioenergetics, and rejuvenates damaged recipient cells. Unfortunately, they can also support leukemia proliferation and survival by creating leukemic niches that provide GJIC dependent energy sources and facilitate chemoresistance and relapse. The emergence of new strategies to disrupt self-reinforcing malignant niches and intercellular organelle exchange in leukemic niches, while at the same time conserving normal hematopoietic GJIC function, could synergize the effect of chemotherapy drugs in eradicating minimal residual disease. An improved understanding of the molecular basis of connexin regulation in normal and leukemic hematopoiesis is warranted for the re-establishment of normal hematopoiesis after chemotherapy.
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Affiliation(s)
- Abhishek K. Singh
- Division of Experimental Hematology and Cancer Biology, Cincinnati Children’s Hospital Medical Center, 3333 Burnet Ave., Cincinnati, OH 45229, USA;
- Hoxworth Blood Center, University of Cincinnati Academic Health Center, 3333 Burnet Ave., Cincinnati, OH 45229, USA
| | - Jose A. Cancelas
- Division of Experimental Hematology and Cancer Biology, Cincinnati Children’s Hospital Medical Center, 3333 Burnet Ave., Cincinnati, OH 45229, USA;
- Hoxworth Blood Center, University of Cincinnati Academic Health Center, 3333 Burnet Ave., Cincinnati, OH 45229, USA
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12
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Read CC, Dyce PW. All‐trans retinoic acid exposure increases connexin 43 expression in cumulus cells and improves embryo development in bovine oocytes. Mol Reprod Dev 2019; 86:1865-1873. [DOI: 10.1002/mrd.23274] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2019] [Accepted: 09/06/2019] [Indexed: 12/16/2022]
Affiliation(s)
- Casey C. Read
- Department of Animal Sciences, College of AgricultureAuburn University Auburn Alabama
| | - Paul W. Dyce
- Department of Animal Sciences, College of AgricultureAuburn University Auburn Alabama
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13
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Shi G, Zheng X, Wu X, Wang S, Wang Y, Xing F. All-trans retinoic acid reverses epithelial-mesenchymal transition in paclitaxel-resistant cells by inhibiting nuclear factor kappa B and upregulating gap junctions. Cancer Sci 2018; 110:379-388. [PMID: 30375704 PMCID: PMC6317959 DOI: 10.1111/cas.13855] [Citation(s) in RCA: 32] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2018] [Revised: 10/18/2018] [Accepted: 10/23/2018] [Indexed: 01/12/2023] Open
Abstract
Paclitaxel is a widely used chemotherapy drug, but development of resistance leads to treatment failure. Tumor cells that are treated with a sublethal dose of paclitaxel for a long period of time show the epithelial‐mesenchymal transition (EMT) phenotype, which leads to metastasis and resistance. All‐trans retinoic acid (ATRA) is always used in combination with paclitaxel and can reverse EMT in many types of cancer cells. The ability of ATRA to reverse EMT in chemoresistant cells is still unknown. In the present study, the ability of ATRA to reverse EMT in paclitaxel‐resistant cells was investigated. Three colorectal cancer cell lines, HCT116, LoVo and CT26, were treated with sublethal doses of paclitaxel to create resistant cell lines. Western blotting, immunocytochemistry, and “parachute” dye‐coupling assays showed that ATRA reverses EMT, inhibits nuclear factor kappa B (NF‐κΒ), and upregulates gap junctions in paclitaxel‐resistant cells. Scratch wound‐healing and Transwell assays showed that ATRA decreases the migration and invasion abilities of paclitaxel‐resistant cells. In addition, the CT26 cell line was used in the Balb/c pulmonary metastasis model to show that ATRA reduces metastasis of paclitaxel‐resistant cells in vivo. Given these data, ATRA may reverse EMT by inhibiting NF‐κΒ and upregulating gap junctions in paclitaxel‐resistant cells.
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Affiliation(s)
- Guiling Shi
- Tianjin Union Medical Center, Tianjin, China
| | | | - Xiaojing Wu
- Tianjin Union Medical Center, Tianjin, China
| | - Siqi Wang
- Tianjin Union Medical Center, Tianjin, China
| | - Yijia Wang
- Tianjin Union Medical Center, Tianjin, China.,State Key Laboratory of Medicinal Chemical Biology, NanKai University, Tianjin, China
| | - Fei Xing
- School of Physics and Optoelectronic Engineering, Shandong University of Technology, Zibo, China
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14
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Malivindi R, Rago V, De Rose D, Gervasi MC, Cione E, Russo G, Santoro M, Aquila S. Influence of all‐
trans
retinoic acid on sperm metabolism and oxidative stress: Its involvement in the physiopathology of varicocele‐associated male infertility. J Cell Physiol 2018; 233:9526-9537. [DOI: 10.1002/jcp.26872] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2017] [Accepted: 05/18/2018] [Indexed: 12/15/2022]
Affiliation(s)
- Rocco Malivindi
- Department of Pharmacy and Sciences of Health and Nutrition University of Calabria Cosenza Italy
| | - Vittoria Rago
- Department of Pharmacy and Sciences of Health and Nutrition University of Calabria Cosenza Italy
| | - Daniela De Rose
- Department of Pharmacy and Sciences of Health and Nutrition University of Calabria Cosenza Italy
- Centro Sanitario, University of Calabria Cosenza Italy
| | | | - Erika Cione
- Department of Pharmacy and Sciences of Health and Nutrition University of Calabria Cosenza Italy
| | - Giampiero Russo
- Consultorio Familiare UNICAL, ASP—National Health Service, Centro Sanitario, University of Calabria Rende Italy
| | - Marta Santoro
- Department of Pharmacy and Sciences of Health and Nutrition University of Calabria Cosenza Italy
- Centro Sanitario, University of Calabria Cosenza Italy
| | - Saveria Aquila
- Department of Pharmacy and Sciences of Health and Nutrition University of Calabria Cosenza Italy
- Centro Sanitario, University of Calabria Cosenza Italy
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15
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Li SC, Kabeer MH. Spatiotemporal switching signals for cancer stem cell activation in pediatric origins of adulthood cancer: Towards a watch-and-wait lifetime strategy for cancer treatment. World J Stem Cells 2018; 10:15-22. [PMID: 29531638 PMCID: PMC5840533 DOI: 10.4252/wjsc.v10.i2.15] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/22/2017] [Revised: 03/06/2018] [Accepted: 03/06/2018] [Indexed: 02/06/2023] Open
Abstract
Pediatric origin of cancer stem cell hypothesis holds great promise and potential in adult cancer treatment, however; the road to innovation is full of obstacles as there are plenty of questions left unanswered. First, the key question is to characterize the nature of such stem cells (concept). Second, the quantitative imaging of pediatric stem cells should be implemented (technology). Conceptually, pediatric stem cell origins of adult cancer are based on the notion that plasticity in early life developmental programming evolves local environments to cancer. Technologically, such imaging in children is lacking as all imaging is designed for adult patients. We postulate that the need for quantitative imaging to measure space-time changes of plasticity in early life developmental programming in children may trigger research and development of the imaging technology. Such quantitative imaging of pediatric origin of adulthood cancer will help develop a spatiotemporal monitoring system to determine cancer initiation and progression. Clinical validation of such speculative hypothesis-that cancer originates in a pediatric environment-will help implement a wait-and-watch strategy for cancer treatment.
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Affiliation(s)
- Shengwen Calvin Li
- Neuro-oncology and Stem Cell Research Laboratory, Children’s Hospital of Orange County, Department of Neurology, University of California-Irvine School of Medicine, Orange, CA 92868-3874, United States
| | - Mustafa H Kabeer
- Children's Hospital of Orange County, Department of Surgery, University of California-Irvine School of Medicine, Orange, CA 92868-3874, United States
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16
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Patrad E, Niapour A, Farassati F, Amani M. Combination treatment of all-trans retinoic acid (ATRA) and γ-secretase inhibitor (DAPT) cause growth inhibition and apoptosis induction in the human gastric cancer cell line. Cytotechnology 2018; 70:865-877. [PMID: 29417442 DOI: 10.1007/s10616-018-0199-3] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2017] [Accepted: 01/24/2018] [Indexed: 01/26/2023] Open
Abstract
Current medication for gastric cancer patients has a low success rate with resistance and side effects. According to recent studies, γ-secretase inhibitors is used as therapeutic drugs in cancer. Moreover, all-trans retinoic acid (ATRA) is a natural compound proposed for the treatment/chemo-prevention of cancers. The aim of this study was to explore the effects of ATRA in combination with N-[N-(3,5-difluorophenacetyl-l-alanyl)]-S-phenylglycine t-butyl ester (DAPT) as γ-secretase inhibitor on viability and apoptosis of the AGS and MKN-45 derived from human gastric cancer. AGS and MKN-45 gastric cancer cell lines were treated with different concentrations of ATRA or DAPT alone or ATRA plus DAPT. The viability, death detection and apoptosis of cells was examined by MTT assay and Ethidium bromide/acridine orange staining. The distribution of cells in different phases of cell cycle was also evaluated through flow cytometry analyses. In addition, caspase 3/7 activity and the expression of caspase-3 and bcl-2 were examined. DAPT and ATRA alone decreased gastric cancer cells viability in a concentration dependent manner. The combination of DAPT and ATRA exhibited significant synergistic inhibitory effects. The greater percentage of cells were accumulated in G0/G1 phase of cell cycle in combination treatment. The combination of DAPT and ATRA effectively increased the proportion of apoptotic cells and the level of caspase 3/7 activities compared to single treatment. Moreover, augmented caspase-3 up-regulation and bcl-2 down-regulation were found following combined application of DAPT and ATRA. The combination of DAPT and ATRA led to more reduction in viability and apoptosis in respect to DAPT or ATRA alone in the investigated cell lines.
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Affiliation(s)
- Elham Patrad
- Department of Biochemistry, School of Medicine, Ardabil University of Medical Sciences, Ardabil, Iran
| | - Ali Niapour
- Research Laboratory for Embryology and Stem Cells, Department of Anatomical Sciences, School of Medicine, Ardabil University of Medical Sciences, Ardabil, Iran.
| | - Faris Farassati
- Molecular Medicine Laboratory, Department of Medicine, The University of Kansas Medical School (KUMC), Kansas City, KS, USA
| | - Mojtaba Amani
- Department of Biochemistry, School of Medicine, Ardabil University of Medical Sciences, Ardabil, Iran. .,Department of Medicinal Chemistry, School of Pharmacy, Ardabil University of Medical Sciences, Ardabil, Iran.
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17
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Wu D, Li B, Liu H, Yuan M, Yu M, Tao L, Dong S, Tong X. In vitro inhibited effect of gap junction composed of Cx43 in the invasion and metastasis of testicular cancer resistanced to cisplatin. Biomed Pharmacother 2018; 98:826-833. [PMID: 29571253 DOI: 10.1016/j.biopha.2018.01.016] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2017] [Revised: 12/21/2017] [Accepted: 01/03/2018] [Indexed: 12/22/2022] Open
Abstract
The effect of gap junction intercellular communication composed of connexin on cancer invasion/metastasis has been thoroughly explored; however, its effect on testicular cancer resistanced to chemotherapy is still unclear. In this study, we found that the capability of invasion and migration of I-10/DDP (cisplatin (DDP)-resistance) cells were elevated. Furthermore, the expression of Cx43 and the function of gap junction (GJ) in I-10/DDP cells were decreased compared with parental I-10 cells. Pharmacological inhibition of GJs by oleamide (Olea) enhanced invasion and migration. However, enhancement of GJs by retinoic acid (RA) decreased invasion and migration of I-10/DDP cells. To further clarify the invasion/migration inhibited effect of GJ in the testicular cancer resistanced to DDP, GJ function was modulated by overexpression and knockdown of Cx43 expression. Overexpression of Cx43 reduced invasion and migration of I-10/DDP cells. Conversely, knockdown of Cx43 expression increased invasion and migration of I-10/DDP cells. In summary, GJ composed of Cx43 inhibits I-10/DDP cells invasion and migration, and it may become the potential therapeutic target for testicular cancer chemotherapy.
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Affiliation(s)
- Dandan Wu
- School of Pharmacy, Bengbu Medical College, Bengbu, Anhui 233030, PR China
| | - Beibei Li
- Department of Pharmacy, The People's Hospital of Lixin County, Anhui, Bozhou, 236700, PR China
| | - Haofeng Liu
- School of Pharmacy, Bengbu Medical College, Bengbu, Anhui 233030, PR China
| | - Min Yuan
- School of Pharmacy, Bengbu Medical College, Bengbu, Anhui 233030, PR China
| | - Meiling Yu
- Department of Pharmacy, The First Affiliated Hospital of Bengbu Medical College, Anhui, Bengbu, 233004, PR China
| | - Liang Tao
- Department of Pharmacology, Zhongshan School of Medicine, Sun Yat-Sen University, Guangzhou, Guangdong 510080, PR China
| | - Shuying Dong
- School of Pharmacy, Bengbu Medical College, Bengbu, Anhui 233030, PR China.
| | - Xuhui Tong
- School of Pharmacy, Bengbu Medical College, Bengbu, Anhui 233030, PR China.
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18
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Cañete A, Cano E, Muñoz-Chápuli R, Carmona R. Role of Vitamin A/Retinoic Acid in Regulation of Embryonic and Adult Hematopoiesis. Nutrients 2017; 9:E159. [PMID: 28230720 PMCID: PMC5331590 DOI: 10.3390/nu9020159] [Citation(s) in RCA: 71] [Impact Index Per Article: 10.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2016] [Revised: 02/05/2017] [Accepted: 02/16/2017] [Indexed: 12/11/2022] Open
Abstract
Vitamin A is an essential micronutrient throughout life. Its physiologically active metabolite retinoic acid (RA), acting through nuclear retinoic acid receptors (RARs), is a potent regulator of patterning during embryonic development, as well as being necessary for adult tissue homeostasis. Vitamin A deficiency during pregnancy increases risk of maternal night blindness and anemia and may be a cause of congenital malformations. Childhood Vitamin A deficiency can cause xerophthalmia, lower resistance to infection and increased risk of mortality. RA signaling appears to be essential for expression of genes involved in developmental hematopoiesis, regulating the endothelial/blood cells balance in the yolk sac, promoting the hemogenic program in the aorta-gonad-mesonephros area and stimulating eryrthropoiesis in fetal liver by activating the expression of erythropoietin. In adults, RA signaling regulates differentiation of granulocytes and enhances erythropoiesis. Vitamin A may facilitate iron absorption and metabolism to prevent anemia and plays a key role in mucosal immune responses, modulating the function of regulatory T cells. Furthermore, defective RA/RARα signaling is involved in the pathogenesis of acute promyelocytic leukemia due to a failure in differentiation of promyelocytes. This review focuses on the different roles played by vitamin A/RA signaling in physiological and pathological mouse hematopoiesis duddurring both, embryonic and adult life, and the consequences of vitamin A deficiency for the blood system.
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Affiliation(s)
- Ana Cañete
- Department of Animal Biology, Faculty of Science, University of Malaga, Campus de Teatinos s/n Malaga 29071, Spain and Andalusian Center for Nanomedicine and Biotechnology (BIONAND), Severo Ochoa 25, Campanillas 29590, Spain.
| | - Elena Cano
- Max-Delbruck Center for Molecular Medicine, Robert Roessle-Strasse 10, 13125 Berlin, Germany.
| | - Ramón Muñoz-Chápuli
- Department of Animal Biology, Faculty of Science, University of Malaga, Campus de Teatinos s/n Malaga 29071, Spain and Andalusian Center for Nanomedicine and Biotechnology (BIONAND), Severo Ochoa 25, Campanillas 29590, Spain.
| | - Rita Carmona
- Department of Animal Biology, Faculty of Science, University of Malaga, Campus de Teatinos s/n Malaga 29071, Spain and Andalusian Center for Nanomedicine and Biotechnology (BIONAND), Severo Ochoa 25, Campanillas 29590, Spain.
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19
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Zhang Y, Zeng C, Lu S, Qin T, Yang L, Chen S, Chen J, Li Y. Identification of miR-125b targets involved in acute promyelocytic leukemia cell proliferation. Biochem Biophys Res Commun 2016; 478:1758-63. [PMID: 27613090 DOI: 10.1016/j.bbrc.2016.09.020] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2016] [Accepted: 09/03/2016] [Indexed: 12/26/2022]
Abstract
Acute promyelocytic leukemia (APL) is characterized by the presence of the PML-RARα fusion protein. We have previously found that PML-RARα-regulated miR-125b is highly expressed in APL; however, the characteristics of the regulatory effects and mechanisms of miR-125b involved in APL proliferation have yet to be clarified. In this study, we demonstrate that miR-125b promotes the proliferation of APL cells with the involvement of the PI3K/Akt and MAPK signaling pathways. Furthermore, we identified BTG2, MAP3K11, RPS6KA1 and PRDM1 as putative targets of miR-125b, which we verified using luciferase reporter constructs. Moreover, we demonstrate that the expression of miR-125b targets is downregulated in leukemic cells in patients with APL. Thus, our results provide evidence that miR-125b can modulate multiple oncogenic cell proliferation pathways and may be a novel therapeutic target for APL.
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MESH Headings
- Adolescent
- Adult
- Blotting, Western
- Cell Line, Tumor
- Cell Proliferation/genetics
- Female
- Gene Expression Regulation, Leukemic
- Humans
- Immediate-Early Proteins/genetics
- Leukemia, Promyelocytic, Acute/genetics
- Leukemia, Promyelocytic, Acute/metabolism
- Leukemia, Promyelocytic, Acute/pathology
- MAP Kinase Kinase Kinases/genetics
- MAP Kinase Signaling System/genetics
- Male
- MicroRNAs/genetics
- Middle Aged
- Phosphatidylinositol 3-Kinases/metabolism
- Positive Regulatory Domain I-Binding Factor 1
- Repressor Proteins/genetics
- Reverse Transcriptase Polymerase Chain Reaction
- Ribosomal Protein S6 Kinases, 90-kDa/genetics
- Tumor Suppressor Proteins/genetics
- Young Adult
- Mitogen-Activated Protein Kinase Kinase Kinase 11
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Affiliation(s)
- Yikai Zhang
- Institute of Hematology, Medical College, Jinan University, Guangzhou, 510632, China; Key Laboratory for Regenerative Medicine of Ministry of Education, Jinan University, Guangzhou, 510632, China; First Affiliated Hospital, Jinan University, Guangzhou 510632, China
| | - Chengwu Zeng
- Institute of Hematology, Medical College, Jinan University, Guangzhou, 510632, China; Key Laboratory for Regenerative Medicine of Ministry of Education, Jinan University, Guangzhou, 510632, China; First Affiliated Hospital, Jinan University, Guangzhou 510632, China.
| | - Shuai Lu
- Institute of Hematology, Medical College, Jinan University, Guangzhou, 510632, China; Key Laboratory for Regenerative Medicine of Ministry of Education, Jinan University, Guangzhou, 510632, China
| | - Tianyu Qin
- Institute of Hematology, Medical College, Jinan University, Guangzhou, 510632, China
| | - Lijian Yang
- Institute of Hematology, Medical College, Jinan University, Guangzhou, 510632, China
| | - Shaohua Chen
- Institute of Hematology, Medical College, Jinan University, Guangzhou, 510632, China
| | - Jie Chen
- First Affiliated Hospital, Jinan University, Guangzhou 510632, China
| | - Yangqiu Li
- Institute of Hematology, Medical College, Jinan University, Guangzhou, 510632, China; Key Laboratory for Regenerative Medicine of Ministry of Education, Jinan University, Guangzhou, 510632, China; First Affiliated Hospital, Jinan University, Guangzhou 510632, China.
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