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Shahwar D, Baqai S, Khan F, Khan MI, Javaid S, Hameed A, Raza A, Saleem Uddin S, Hazrat H, Rahman MH, Musharraf SG, Chotani MA. Proteomic Analysis of Rap1A GTPase Signaling-Deficient C57BL/6 Mouse Pancreas and Functional Studies Identify an Essential Role of Rap1A in Pancreas Physiology. Int J Mol Sci 2024; 25:8013. [PMID: 39125590 PMCID: PMC11312117 DOI: 10.3390/ijms25158013] [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: 06/07/2024] [Revised: 07/11/2024] [Accepted: 07/14/2024] [Indexed: 08/12/2024] Open
Abstract
Ras-related Rap1A GTPase is implicated in pancreas β-cell insulin secretion and is stimulated by the cAMP sensor Epac2, a guanine exchange factor and activator of Rap1 GTPase. In this study, we examined the differential proteomic profiles of pancreata from C57BL/6 Rap1A-deficient (Null) and control wild-type (WT) mice with nanoLC-ESI-MS/MS to assess targets of Rap1A potentially involved in insulin regulation. We identified 77 overlapping identifier proteins in both groups, with 8 distinct identifier proteins in Null versus 56 distinct identifier proteins in WT mice pancreata. Functional enrichment analysis showed four of the eight Null unique proteins, ERO1-like protein β (Ero1lβ), triosephosphate isomerase (TP1), 14-3-3 protein γ, and kallikrein-1, were exclusively involved in insulin biogenesis, with roles in insulin metabolism. Specifically, the mRNA expression of Ero1lβ and TP1 was significantly (p < 0.05) increased in Null versus WT pancreata. Rap1A deficiency significantly affected glucose tolerance during the first 15-30 min of glucose challenge but showed no impact on insulin sensitivity. Ex vivo glucose-stimulated insulin secretion (GSIS) studies on isolated Null islets showed significantly impaired GSIS. Furthermore, in GSIS-impaired islets, the cAMP-Epac2-Rap1A pathway was significantly compromised compared to the WT. Altogether, these studies underscore an essential role of Rap1A GTPase in pancreas physiological function.
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Affiliation(s)
- Durrey Shahwar
- Molecular Signaling Laboratory, Dr. Panjwani Center for Molecular Medicine and Drug Research (PCMD), International Center for Chemical and Biological Sciences, University of Karachi, Karachi 75270, Pakistan; (D.S.); (S.B.); (S.J.); (A.R.); (S.S.U.); (H.H.)
| | - Sadaf Baqai
- Molecular Signaling Laboratory, Dr. Panjwani Center for Molecular Medicine and Drug Research (PCMD), International Center for Chemical and Biological Sciences, University of Karachi, Karachi 75270, Pakistan; (D.S.); (S.B.); (S.J.); (A.R.); (S.S.U.); (H.H.)
| | - Faisal Khan
- Mass Spectrometry Laboratory, Dr. Panjwani Center for Molecular Medicine and Drug Research, International Center for Chemical and Biological Sciences, University of Karachi, Karachi 75270, Pakistan; (F.K.); (S.G.M.)
- Husein Ebrahim Jamal (H.E.J.) Research Institute of Chemistry, International Center for Chemical and Biological Sciences, University of Karachi, Karachi 75270, Pakistan
| | - M. Israr Khan
- Molecular Diabetology Laboratory, Dr. Panjwani Center for Molecular Medicine and Drug Research, International Center for Chemical and Biological Sciences, University of Karachi, Karachi 75270, Pakistan; (M.I.K.); (M.H.R.)
| | - Shafaq Javaid
- Molecular Signaling Laboratory, Dr. Panjwani Center for Molecular Medicine and Drug Research (PCMD), International Center for Chemical and Biological Sciences, University of Karachi, Karachi 75270, Pakistan; (D.S.); (S.B.); (S.J.); (A.R.); (S.S.U.); (H.H.)
| | - Abdul Hameed
- Ziauddin College of Molecular Medicine, Ziauddin University, Clifton, Karachi 75600, Pakistan;
| | - Aisha Raza
- Molecular Signaling Laboratory, Dr. Panjwani Center for Molecular Medicine and Drug Research (PCMD), International Center for Chemical and Biological Sciences, University of Karachi, Karachi 75270, Pakistan; (D.S.); (S.B.); (S.J.); (A.R.); (S.S.U.); (H.H.)
| | - Sadaf Saleem Uddin
- Molecular Signaling Laboratory, Dr. Panjwani Center for Molecular Medicine and Drug Research (PCMD), International Center for Chemical and Biological Sciences, University of Karachi, Karachi 75270, Pakistan; (D.S.); (S.B.); (S.J.); (A.R.); (S.S.U.); (H.H.)
| | - Hina Hazrat
- Molecular Signaling Laboratory, Dr. Panjwani Center for Molecular Medicine and Drug Research (PCMD), International Center for Chemical and Biological Sciences, University of Karachi, Karachi 75270, Pakistan; (D.S.); (S.B.); (S.J.); (A.R.); (S.S.U.); (H.H.)
| | - M. Hafizur Rahman
- Molecular Diabetology Laboratory, Dr. Panjwani Center for Molecular Medicine and Drug Research, International Center for Chemical and Biological Sciences, University of Karachi, Karachi 75270, Pakistan; (M.I.K.); (M.H.R.)
- Daffodil International University, Birulia, Savar, Dhaka 1216, Bangladesh
- Dhaka International University, Satarkul, Badda, Dhaka 1212, Bangladesh
| | - Syed Ghulam Musharraf
- Mass Spectrometry Laboratory, Dr. Panjwani Center for Molecular Medicine and Drug Research, International Center for Chemical and Biological Sciences, University of Karachi, Karachi 75270, Pakistan; (F.K.); (S.G.M.)
- Husein Ebrahim Jamal (H.E.J.) Research Institute of Chemistry, International Center for Chemical and Biological Sciences, University of Karachi, Karachi 75270, Pakistan
| | - Maqsood A. Chotani
- Molecular Signaling Laboratory, Dr. Panjwani Center for Molecular Medicine and Drug Research (PCMD), International Center for Chemical and Biological Sciences, University of Karachi, Karachi 75270, Pakistan; (D.S.); (S.B.); (S.J.); (A.R.); (S.S.U.); (H.H.)
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Wang M, Mao H, Ke Z, Chen J, Qi L, Wang J. Chinese bayberry ( Myrica rubra Sieb. et Zucc.) leaves proanthocyanidins inhibit intestinal glucose transport in human Caco-2 cells. Front Pharmacol 2024; 15:1284268. [PMID: 38529186 PMCID: PMC10961338 DOI: 10.3389/fphar.2024.1284268] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2023] [Accepted: 02/22/2024] [Indexed: 03/27/2024] Open
Abstract
Background: The hypoglycemic effects of Chinese bayberry leaves proanthocyanidins (BLPs) have been demonstrated. It is unclear, nevertheless, whether BLPs reduced postprandial blood glucose levels by regulating glucose uptake and glucose transport. Method: This study investigated the effect of BLPs (25, 50, and 100 μg/mL) on glucose uptake and glucose transport in human intestinal epithelial cells (Caco-2 cells). The uptake of 2-Deoxy-2-[(7-nitro-2,1,3-benzoxadiazol-4-yl) amino]-D-glucose (2-NBDG) and disaccharidases activity in Caco-2 cells were measured. The glucose transport ability across the cell membrane was determined using the established Caco-2 monolayer model. The transcript and protein levels of key glucose transporters were analyzed using real-time quantitative polymerase chain reaction (RT-qPCR) and western blotting, respectively. Results: The results showed that BLPs significantly decreased glucose uptake and disaccharidases activity (p < 0.05). Otherwise, BLPs treatment obviously inhibited glucose transport across the Caco-2 monolayer in both simulated-fast (5 mM glucose) and simulated-fed (25 mM glucose) conditions. It was attributed to the suppression of glucose transporter2 (GLUT2) and sodium-dependent glucose cotransporter 1 (SGLT1) by BLPs. BLPs were found to significantly downregulated the transcript level and protein expression of glucose transporters (p < 0.05). Meanwhile, the mRNA expression of phospholipase C (PLC) and protein kinase C (PKC) involved in the signaling pathway associated with glucose transport were decreased by BLPs. Conclusion: These results suggested that BLPs inhibited intestinal glucose transport via inhibiting the expression of glucose transporters. It indicated that BLPs could be potentially used as a functional food in the diet to modulate postprandial hyperglycemia.
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Affiliation(s)
- Mengting Wang
- School of Biological and Chemical Engineering, NingboTech University, Ningbo, China
| | - Haiguang Mao
- School of Biological and Chemical Engineering, NingboTech University, Ningbo, China
| | - Zhijian Ke
- School of Biological and Chemical Engineering, NingboTech University, Ningbo, China
| | - Jianchu Chen
- College of Biosystems Engineering and Food Science, Zhejiang University, Hangzhou, China
| | - Lili Qi
- School of Biological and Chemical Engineering, NingboTech University, Ningbo, China
| | - Jinbo Wang
- School of Biological and Chemical Engineering, NingboTech University, Ningbo, China
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Yuan P, Feng A, Wei Y, Li S, Fu Y, Wang X, Guo M, Feng W, Zheng X. Indole-3-carboxaldehyde alleviates cisplatin-induced acute kidney injury in mice by improving mitochondrial dysfunction via PKA activation. Food Chem Toxicol 2024; 186:114546. [PMID: 38408633 DOI: 10.1016/j.fct.2024.114546] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2023] [Revised: 02/15/2024] [Accepted: 02/23/2024] [Indexed: 02/28/2024]
Abstract
Cisplatin (DDP) is widely used in the treatment of cancer as a chemotherapeutic drug. However, its severe nephrotoxicity limits the extensive application of cisplatin, which is characterized by injury and apoptosis of renal tubular epithelial cells. This study aimed to reveal the protective effect and its underlying mechanism of Indole-3-carboxaldehyde (IC) against DDP-induced AKI in mice and NRK-52E cells pretreated with PKA antagonist (H-89). Here, we reported that IC improved renal artery blood flow velocity and renal function related indicators, attenuated renal pathological changes, which were confirmed by the results of HE staining and PASM staining. Meanwhile, IC inhibited the levels of inflammatory factors, oxidative stress, CTR1, OCT2, and the levels of autophagy and apoptosis. Mitochondrial dysfunction was significantly improved as observed by TEM. To clarify the potential mechanism, NRK-52E cells induced by DDP was used and the results proved that H-89 could blocked the improvement with IC effectively in vitro. Our findings showed that IC has the potential to treat cisplatin-induced AKI, and its role in protecting the kidney was closely related to activating PKA, inhibiting autophagy and apoptosis, improving mitochondrial function, which could provide a theoretical basis for the development of new clinical drugs.
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Affiliation(s)
- Peipei Yuan
- Henan University of Chinese Medicine, Zhengzhou, 450046, PR China; Engineering and Technology Center for Chinese Medicine Development of Henan Province, Zhengzhou, 450046, PR China
| | - Aozi Feng
- Department of Clinical Research, The First Affiliated Hospital of Jinan University, Guangzhou, 510632, PR China
| | - Yaxin Wei
- Henan University of Chinese Medicine, Zhengzhou, 450046, PR China
| | - Saifei Li
- Henan University of Chinese Medicine, Zhengzhou, 450046, PR China
| | - Yang Fu
- Henan University of Chinese Medicine, Zhengzhou, 450046, PR China
| | - Xiao Wang
- Henan University of Chinese Medicine, Zhengzhou, 450046, PR China
| | - Menghuan Guo
- Henan University of Chinese Medicine, Zhengzhou, 450046, PR China
| | - Weisheng Feng
- Henan University of Chinese Medicine, Zhengzhou, 450046, PR China; Engineering and Technology Center for Chinese Medicine Development of Henan Province, Zhengzhou, 450046, PR China; Collaborative Innovation Center for Chinese Medicine and Respiratory Diseases Co-constructed by Henan Province & Education Ministry of PR China, Zhengzhou, 450046, PR China.
| | - Xiaoke Zheng
- Henan University of Chinese Medicine, Zhengzhou, 450046, PR China; Engineering and Technology Center for Chinese Medicine Development of Henan Province, Zhengzhou, 450046, PR China; Collaborative Innovation Center for Chinese Medicine and Respiratory Diseases Co-constructed by Henan Province & Education Ministry of PR China, Zhengzhou, 450046, PR China
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Li M, Xue Y, Chi L, Jin L. Heparin Oligosaccharides as Vasoactive Intestinal Peptide Inhibitors via their Binding Process Characterization. Curr Protein Pept Sci 2024; 25:480-491. [PMID: 38284716 DOI: 10.2174/0113892037287189240122110819] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2023] [Revised: 01/02/2024] [Accepted: 01/12/2024] [Indexed: 01/30/2024]
Abstract
BACKGROUND It has been proven that vasoactive intestinal peptide (VIP) was involved in the pathogenesis of prostate cancer. Cardin et al. found that by an alanine scan, the heparin- binding site on VIP was exactly the same sequence in VIP and its receptor. Therefore, heparin could competitively block the binding of VIP and its receptor. However, the structure-activity relationship between heparin and VIP has not been reported, especially in terms of the sequence and sulfation patterns of heparin oligosaccharides upon binding to VIP. OBJECTIVE A variety of experiments were designed to study the binding process and structure-activity relationship between heparin oligosaccharides and VIP. METHODS Heparin was enzymatically digested and purified to produce heparin oligosaccharides, and the structures were characterized by NMR. The binding capacity between heparin oligosaccharides and VIP was analyzed by GMSA and ITC experiments. The binding between heparin oligosaccharides and VIP was simulated using a molecular docking program to show the complex. ELISA assay was used to investigate the effect of non-anticoagulant heparin oligosaccharides on the VIP-mediated cAMP/PKA signaling pathway in vitro. RESULTS The results indicated that both the length and the sulfation pattern of heparin oligosaccharides affected its binding to VIP. VIP could induce the expression of cAMP at a higher level in PC3 cells, which could be regulated by the interaction of heparin oligosaccharides and VIP. CONCLUSION The binding between heparin oligosaccharides and VIP could block the binding between VIP and its receptor on tumor cells. Downloading the regulation of the expression level of cAMP could possibly further affect the subsequent activation of PKA. These non-anticoagulant heparin oligosaccharides may block the VIP-mediated cAMP/PKA signaling pathway and thus exert their antitumor activity.
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Affiliation(s)
- Meixin Li
- National Glycoengineering Research Center, NMPA Key Laboratory for Quality Research and Evaluation of Carbohydrate- based Medicine, Shandong University, Qingdao, Shandong, 266237, China
| | - Yaqi Xue
- National Glycoengineering Research Center, NMPA Key Laboratory for Quality Research and Evaluation of Carbohydrate- based Medicine, Shandong University, Qingdao, Shandong, 266237, China
| | - Lianli Chi
- National Glycoengineering Research Center, NMPA Key Laboratory for Quality Research and Evaluation of Carbohydrate- based Medicine, Shandong University, Qingdao, Shandong, 266237, China
| | - Lan Jin
- National Glycoengineering Research Center, NMPA Key Laboratory for Quality Research and Evaluation of Carbohydrate- based Medicine, Shandong University, Qingdao, Shandong, 266237, China
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Baral J, Shrestha D, Devkota HP, Adhikari A. Potent ROS inhibitors from Zanthoxylum armatumDC of Nepali origin. Nat Prod Res 2023:1-9. [PMID: 37787048 DOI: 10.1080/14786419.2023.2261608] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2023] [Accepted: 09/16/2023] [Indexed: 10/04/2023]
Abstract
A bioassay-guided isolation on the plant Zanthoxylum armatum DC yielded compounds tambulin (1), and prudomestin (2), from ethyl acetate fraction which showed the highest ROS inhibiting activity (IC50 = 17.8 ± 1.1 µg/mL). Structure elucidation of pure compounds was done using mass and NMR spectroscopic techniques. Compounds 1 and 2 revealed potent ROS inhibition with IC50 = 7.5 ± 0.3 and 1.5 ± 0.3 µg/mL, respectively, as compared to standard ibuprofen (IC50 = 11.2 ± 1.9 µg/mL). Likewise, both compounds 1 and 2 showed potent antioxidant activity with IC50 = 32.65 ± 0.31 and 26.96 ± 0.19 µg/mL, respectively. In vitro studies were supported by molecular docking and drug-likeliness properties. In silico studies of 1 and 2 with cyclooxygenase-2 (COX-2) showed perfect binding affinity with binding energies of -8.4 and -8.6 kcal/mol, respectively, comparable to standard ibuprofen (-7.7 kcal/mol). Drug likeness and ADMET showed higher gastrointestinal absorption of 1 and 2 and no toxic impact.
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Affiliation(s)
- Janaki Baral
- Central Department of Chemistry, Tribhuvan University, Kathmandu, Nepal
- Department of Chemistry, Tri-Chandra Multiple Campus, Tribhuvan University, Kathmandu, Nepal
| | - Dipesh Shrestha
- Department of Chemistry, Tri-Chandra Multiple Campus, Tribhuvan University, Kathmandu, Nepal
| | - Hari Prasad Devkota
- Graduate School of Pharmaceutical Sciences, Kumamoto University, Kumamoto, Japan
| | - Achyut Adhikari
- Central Department of Chemistry, Tribhuvan University, Kathmandu, Nepal
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Zhang D, Sun X, Battino M, Wei X, Shi J, Zhao L, Liu S, Xiao J, Shi B, Zou X. A comparative overview on chili pepper (capsicum genus) and sichuan pepper (zanthoxylum genus): From pungent spices to pharma-foods. Trends Food Sci Technol 2021. [DOI: 10.1016/j.tifs.2021.03.004] [Citation(s) in RCA: 20] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
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Wang W, Liu Y, Zhao L. Tambulin Targets Histone Deacetylase 1 Inhibiting Cell Growth and Inducing Apoptosis in Human Lung Squamous Cell Carcinoma. Front Pharmacol 2020; 11:1188. [PMID: 32903420 PMCID: PMC7434869 DOI: 10.3389/fphar.2020.01188] [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: 06/15/2020] [Accepted: 07/22/2020] [Indexed: 12/20/2022] Open
Abstract
There is an urgent unmet need to develop new therapeutics for lung squamous cell carcinoma (LSCC) as the current gold standard treatment regimens are dominated by chemotherapy. In this study, we observed the treatment effects of the natural compound tambulin on LSCC and explored its mechanism of action. LSCC cell lines H226 and H520 were cultured in vitro to observe the effects of tambulin on cell proliferation and apoptosis. Western blotting was used to detect the expression of histone deacetylase 1 (HDAC1) and apoptosis-related proteins. Cell derived xenografts (CDX) of H226 and H520 in nude mice were established to examine the inhibitory effects of tambulin in vivo. Results showed that tambulin inhibited the proliferation of H226 and H520 cells in a dose-dependent manner and inhibited the growth of CDX tumors. Tambulin also promoted the apoptosis of H226 and H520 cells, up-regulated the protein expression of cleaved caspase-3, cleaved caspase-9 and Bax, and down-regulated HDAC1 and Bcl-2 protein expression. In support of this, immunohistochemical analysis of CDX tumors from mice treated with tambulin showed increased expression of cleaved caspase-3 and Bax, while the expression of HDAC1 and Bcl-2 were decreased. What’s more, when HDAC1 was over-expressed via adenovirus transduction in H226 or H520 cells, the effects of tambulin were significantly attenuated. Interestingly, we found that combining tambulin with cisplatin treatment in CDX models was more effective than single drug treatment, suggesting that tambulin may enhance the sensitivity of LSCC to cisplatin. Taken together, this study proves that tambulin has a definite therapeutic effect on LSCC. Mechanistically, tambulin downregulates HDAC1, which in turn regulates the Bcl-2/caspase signaling pathway and promotes cancer cell apoptosis.
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Affiliation(s)
- Wuming Wang
- Department of Thoracic Surgery, Jiangxi Provincial Chest Hospital, Nanchang, China
| | - Yuzhen Liu
- Department of Thoracic Surgery, Jiangxi Provincial Chest Hospital, Nanchang, China
| | - Long Zhao
- Department of Thoracic Surgery, Jiangxi Provincial Chest Hospital, Nanchang, China
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