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Coleman MI, Khan M, Gbodossou E, Diop A, DeBarros K, Duong H, Bond VC, Floyd V, Kondwani K, Montgomery Rice V, Villinger F, Powell MD. Identification of a Novel Anti-HIV-1 Protein from Momordica balsamina Leaf Extract. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2022; 19:ijerph192215227. [PMID: 36429944 PMCID: PMC9690441 DOI: 10.3390/ijerph192215227] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 09/23/2022] [Revised: 11/10/2022] [Accepted: 11/16/2022] [Indexed: 05/12/2023]
Abstract
Our lab investigates the anti-HIV-1 activity in Momordica balsamina (M. balsamina) leaf extract. Traditional Senegalese healers have used M. balsamina leaf extract as a part of a plant-based treatment for HIV/AIDS infections. Our overall goal is to define and validate the scientific basis for using M. balsamina leaf extract as a part of the traditional Senegalese treatment. As an initial characterization of this extract, we used activity-guided fractionation to determine the active ingredient's solubility and relative size. We found that M. balsamina leaf extract inhibits HIV-1 infection by >50% at concentrations of 0.02 mg/mL and above and is not toxic over its inhibitory range (0-0.5 mg/mL). We observed significantly more antiviral activity in direct water and acetonitrile extractions (p ≤ 0.05). We also observed significantly more antiviral activity in the aqueous phases of ethyl acetate, chloroform, and diethyl ether extractions (p ≤ 0.05). Though most of the antiviral activity partitioned into the aqueous layers, some antiviral activity was present in the organic layers. We show that the active agent in the plant extracts is at least 30 kD in size. Significantly more antiviral activity was retained in 3, 10, and 30 kD molecular weight cutoff filters (p ≤ 0.05). In contrast, most of the antiviral activity passed through the 100 kD filter (p ≤ 0.05). Because the active anti-HIV-1 agent presented as a large, amphiphilic molecule we ran the purified extract on an SDS-page gel. We show that the anti-HIV-1 activity in the leaf extracts is attributed to a 30 kDa protein we call MoMo30. This article describes how MoMo30 was determined to be responsible for its anti-HIV-1 activity.
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Affiliation(s)
- Morgan I. Coleman
- Department of Microbiology, Biochemistry and Immunology, Morehouse School of Medicine, 720 Westview Dr. SW, Atlanta, GA 30310, USA
| | - Mahfuz Khan
- Department of Microbiology, Biochemistry and Immunology, Morehouse School of Medicine, 720 Westview Dr. SW, Atlanta, GA 30310, USA
| | | | - Amad Diop
- Malango Traditional Healers Association, Fatick BP 1763, Senegal
| | - Kenya DeBarros
- Department of Microbiology, Biochemistry and Immunology, Morehouse School of Medicine, 720 Westview Dr. SW, Atlanta, GA 30310, USA
| | - Hao Duong
- Department of Pharmacology and Toxicology, Morehouse School of Medicine, 720 Westview Dr. SW, Atlanta, GA 30310, USA
| | - Vincent C. Bond
- Department of Microbiology, Biochemistry and Immunology, Morehouse School of Medicine, 720 Westview Dr. SW, Atlanta, GA 30310, USA
| | - Virginia Floyd
- Department of Community Health and Prevention, Morehouse School of Medicine, 720 Westview Dr. SW, Atlanta, GA 30310, USA
| | - Kofi Kondwani
- Department of Community Health and Prevention, Morehouse School of Medicine, 720 Westview Dr. SW, Atlanta, GA 30310, USA
| | - Valerie Montgomery Rice
- Office of the President, Morehouse School of Medicine, 720 Westview Dr. SW, Atlanta, GA 30310, USA
| | - Francois Villinger
- Department of Biology Director, New Iberia Research Center, University of Louisiana at Lafayette, 4401 W Admiral Doyle Drive, New Iberia, LA 70560, USA
| | - Michael D. Powell
- Department of Microbiology, Biochemistry and Immunology, Morehouse School of Medicine, 720 Westview Dr. SW, Atlanta, GA 30310, USA
- Correspondence: ; Tel.: +1-404-752-1582
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Kulshreshtha A, Sharma S, Padilla CS, Mandadi KK. Plant-based expression platforms to produce high-value metabolites and proteins. FRONTIERS IN PLANT SCIENCE 2022; 13:1043478. [PMID: 36426139 PMCID: PMC9679013 DOI: 10.3389/fpls.2022.1043478] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/13/2022] [Accepted: 10/10/2022] [Indexed: 06/16/2023]
Abstract
Plant-based heterologous expression systems can be leveraged to produce high-value therapeutics, industrially important proteins, metabolites, and bioproducts. The production can be scaled up, free from pathogen contamination, and offer post-translational modifications to synthesize complex proteins. With advancements in molecular techniques, transgenics, CRISPR/Cas9 system, plant cell, tissue, and organ culture, significant progress has been made to increase the expression of recombinant proteins and important metabolites in plants. Methods are also available to stabilize RNA transcripts, optimize protein translation, engineer proteins for their stability, and target proteins to subcellular locations best suited for their accumulation. This mini-review focuses on recent advancements to enhance the production of high-value metabolites and proteins necessary for therapeutic applications using plants as bio-factories.
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Affiliation(s)
- Aditya Kulshreshtha
- Texas A&M AgriLife Research and Extension Center, Weslaco, TX, United States
| | - Shweta Sharma
- Department of Veterinary Pathology, Dr. GCN College of Veterinary & Animal Sciences, CSK Himachal Pradesh Agricultural University, Palampur, India
| | - Carmen S. Padilla
- Texas A&M AgriLife Research and Extension Center, Weslaco, TX, United States
| | - Kranthi K. Mandadi
- Texas A&M AgriLife Research and Extension Center, Weslaco, TX, United States
- Department of Plant Pathology and Microbiology, Texas A&M University, College Station, TX, United States
- Institute for Advancing Health Through Agriculture, Texas A&M AgriLife, College Station, TX, United States
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Luo G, Cao VD, Kannan B, Liu H, Shanklin J, Altpeter F. Metabolic engineering of energycane to hyperaccumulate lipids in vegetative biomass. BMC Biotechnol 2022; 22:24. [PMID: 36042455 PMCID: PMC9425976 DOI: 10.1186/s12896-022-00753-7] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2022] [Accepted: 08/18/2022] [Indexed: 11/24/2022] Open
Abstract
Background The metabolic engineering of high-biomass crops for lipid production in their vegetative biomass has recently been proposed as a strategy to elevate energy density and lipid yields for biodiesel production. Energycane and sugarcane are highly polyploid, interspecific hybrids between Saccharum officinarum and Saccharum spontaneum that differ in the amount of ancestral contribution to their genomes. This results in greater biomass yield and persistence in energycane, which makes it the preferred target crop for biofuel production. Results Here, we report on the hyperaccumulation of triacylglycerol (TAG) in energycane following the overexpression of the lipogenic factors Diacylglycerol acyltransferase1-2 (DGAT1-2) and Oleosin1 (OLE1) in combination with RNAi suppression of SUGAR-DEPENDENT1 (SDP1) and Trigalactosyl diacylglycerol1 (TGD1). TAG accumulated up to 1.52% of leaf dry weight (DW,) a rate that was 30-fold that of non-modified energycane, in addition to almost doubling the total fatty acid content in leaves to 4.42% of its DW. Pearson’s correlation analysis showed that the accumulation of TAG had the highest correlation with the expression level of ZmDGAT1-2, followed by the level of RNAi suppression for SDP1. Conclusions This is the first report on the metabolic engineering of energycane and demonstrates that this resilient, high-biomass crop is an excellent target for the further optimization of the production of lipids from vegetative tissues. Supplementary Information The online version contains supplementary material available at 10.1186/s12896-022-00753-7.
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Affiliation(s)
- Guangbin Luo
- Plant Molecular and Cellular Biology Program, Agronomy Department, Genetics Institute, University of Florida, IFAS, Gainesville, FL, USA
| | - Viet Dang Cao
- Plant Molecular and Cellular Biology Program, Agronomy Department, Genetics Institute, University of Florida, IFAS, Gainesville, FL, USA
| | - Baskaran Kannan
- Plant Molecular and Cellular Biology Program, Agronomy Department, Genetics Institute, University of Florida, IFAS, Gainesville, FL, USA
| | - Hui Liu
- Biology Department, Brookhaven National Laboratory, Upton, NY, USA
| | - John Shanklin
- Biology Department, Brookhaven National Laboratory, Upton, NY, USA.
| | - Fredy Altpeter
- Plant Molecular and Cellular Biology Program, Agronomy Department, Genetics Institute, University of Florida, IFAS, Gainesville, FL, USA.
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