| 41 |
IPD4495 |
B. subtilis, Totarol, LC-MS/MS |
Dr Sanjeeva Srivastava |
Comprehensive Proteomic Analysis of Totarol Induced Alterations in Bacillus subtilis by Multipronged Quantitative Proteomics.
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Proteomics lab, Department of Biosciences and Bioengineering, Indian Institute of Technology Bombay |
Shotgun proteomics |
2024-10-23 |
25464363
|
| 42 |
IPD4797 |
Quantitative Proteomics analysis of Plasmodium vivax induced alterations in human serum during the acute and convalescent phases of infection |
Dr Sanjeeva Srivastava |
Malaria is by far the world’s most significant tropical infectious disease and over the last a few decades large-scale malaria epidemics have happened in almost all continents. Plasmodium falciparum and Plasmodium vivax account for over 90% of the total malaria cases worldwide. The estimated number of annual clinical cases of...
Malaria is by far the world’s most significant tropical infectious disease and over the last a few decades large-scale malaria epidemics have happened in almost all continents. Plasmodium falciparum and Plasmodium vivax account for over 90% of the total malaria cases worldwide. The estimated number of annual clinical cases of vivax malaria is even higher than that of falciparum malaria, but yet the morbidity associated with this infection and its spectrum of disease is largely neglected. Identification of serum/plasma proteins, which exhibit altered abundance at the onset and during the acute phase of any infection, could be informative to understand the pathobiology of different infectious diseases and host responses against the invading pathogens. To this end, in recent years, quite a few research groups including us have investigated alterations in serum/plasma proteome in severe and non-severe falciparum malaria (and also vivax malaria) to study malaria pathogenesis. In all these studies, serum/plasma proteome of the malaria patients have been analyzed during the febrile stages of the infection, either at the onset of the disease or at the fastigium stage. However, temporal profiling of serum/plasma proteome during acute and remission stages in malaria, which can provide snapshots of the transient and enduring alterations in serum proteome during the febrile, defervescence and convalescent stages has not been reported hitherto. Here, we report, for the first time, serum proteomic alterations in a longitudinal cohort of P. vivax infected patients to elucidate host responses when fever is established (temperature of the body reaches above higher normal level), during the stage when the temperature comes down to normal, and also during the gradual recovery of health after the illness. The three stages discussed in our study have been categorically chosen depending upon the clinical course of uncomplicated vivax malaria. Analysis of the early febrile stage represents host proteome profile immediately after onset of the infection, without any effect of anti-malarial drugs. The second, defervescence stage, reflects any immediate change in blood proteome at early recovery phase, while the convalescent stage indicates a phase after administration of 14 days radical cure treatment with primaquine and a complete recovery, when none of the patients displayed any apparent symptoms of malaria. We have also performed an extensive quantitative proteomics analysis to compare the serum proteome profiles of vivax malaria patients with low and moderately-high parasitemia with healthy community controls. Isobaric tags for relative and absolute quantitation (iTRAQ) and 2-D fluorescence difference gel electrophoresis (2D-DIGE)-based quantitative proteomics approaches were used in the discovery-phase of the study, and some selected differentially abundant serum proteins were validated further by using ELISA. Interestingly, some of the serum proteins like Serum amyloid A, Apolipoprotein A1, C-reactive protein, Titin and Haptoglobin, were found to be sequentially altered with respect to increased parasite counts, while many of the quantified candidates such as Hemopexin, Vitronectin, Clusterin and Apolipoprotein E exhibited nearly equal levels of differential serum abundance in different parasitemic malaria patients. Analysis of a longitudinal cohort of malaria patients indicated reversible alterations in serum levels of some proteins such as Haptoglobin, Apolipoprotein E, Apolipoprotein A1, Carbonic anhydrase 1, and Hemoglobin subunit alpha upon treatment; however, the levels of a few other proteins did not return to the baseline even during the convalescent phase of the infection. Identification of the differentially abundant serum proteins and associated physiological pathways in vivax malaria along with phase-specific protein profiles during the acute and convalescent phases of the infection can effectively enhance our understanding of P. vivax disease biology and host immune responses.
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Proteomics lab, Department of Biosciences and Bioengineering, Indian Institute of Technology Bombay |
Shotgun proteomics |
2024-10-26 |
28667326
|
| 43 |
IPD2566 |
iTRAQ based disease responsive extracellular matrix proteome of jute infected with Macrophomina Phaseolina |
Dr. Subhra Chakraborty |
Extracellular matrix (ECM) is the first line of defense which is an inimitable organelle that perceives biotic and abiotic stresses and reprograms biological processes of host. It also activates innate immune responses in temporal and spatial manner and acts as physical scaffold that prevents the entry of pathogen and microbes...
Extracellular matrix (ECM) is the first line of defense which is an inimitable organelle that perceives biotic and abiotic stresses and reprograms biological processes of host. It also activates innate immune responses in temporal and spatial manner and acts as physical scaffold that prevents the entry of pathogen and microbes in response to stress and hormonal signals. Stem rot, caused by Macrophomina phaseolina adversely affects fiber production in jute. However, how wall related susceptibility affects ECM proteome remains undetermined in bast fiber crops. Here, stem rot responsive quantitative temporal ECM proteome was developed in jute upon M. phaseolina infection. Using isobaric tags for relative and absolute quantitative proteomics and MS/MS analysis, we identified 415 disease responsive proteins (DRPs), involved in wall integrity, acidification, proteostasis, hydration and redox homeostasis. Disease-related correlation network identified functional hubs related to wall degrading enzymes, structural carbohydrates and signaling govern rot responsive wall-susceptibility.
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DBT-National Institute of Plant Genome Research, New Delhi, India |
Bottom-up |
2024-10-30 |
38572503
|
| 44 |
IPD6869 |
Integrated seed proteome and phosphoproteome analyses reveal interplay of nutrient dynamics, carbon-nitrogen partitioning and oxidative signaling in chickpea, part 3 |
Dr Subhra Chakraborty |
To understand nutrient dynamics during embryonic and cotyledonary photoheterotrophic transition to mature and germinating autotrophic seeds, TiO2-based phosphoproteomics study in three sequential seed developmental phases in chickpea was performed.
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DBT-National Institute of Plant Genome Research, New Delhi, India |
Shotgun proteomics |
2024-10-30 |
32146728
|
| 45 |
IPD1218 |
Integrated seed proteome and phosphoproteome analyses reveal interplay of nutrient dynamics, carbon-nitrogen partitioning and oxidative signaling in chickpea, part 2 |
Dr Subhra Chakraborty |
To understand nutrient dynamics during embryonic and cotyledonary photoheterotrophic transition to mature and germinating autotrophic seeds, 2-DE based phosphoproteomics study in six sequential seed developmental stages in chickpea was performed.
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DBT-National Institute of Plant Genome Research, New Delhi, India |
Gel-based experiment |
2024-10-30 |
32146728
|
| 46 |
IPD3847 |
Integrated seed proteome and phosphoproteome analyses reveal interplay of nutrient dynamics, carbon-nitrogen partitioning and oxidative signaling in chickpea, part 1 |
Dr Subhra Chakraborty |
To understand nutrient dynamics during embryonic and cotyledonary photoheterotrophic transition to mature and germinating autotrophic seeds, 2-DE based proteomics study in six sequential seed developmental stages in chickpea was performed.
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DBT-National Institute of Plant Genome Research, New Delhi, India |
Gel-based experiment |
2024-10-30 |
32146728
|
| 47 |
IPD6899 |
Gel based extracellular matrix proteome of jute |
Dr. Subhra Chakraborty |
Extracellular matrix (ECM) is the first line of defense which is an inimitable organelle that perceives biotic and abiotic stresses and reprograms biological processes of host. It also activates innate immune responses in temporal and spatial manner and acts as physical scaffold that prevents the entry of pathogen and microbes...
Extracellular matrix (ECM) is the first line of defense which is an inimitable organelle that perceives biotic and abiotic stresses and reprograms biological processes of host. It also activates innate immune responses in temporal and spatial manner and acts as physical scaffold that prevents the entry of pathogen and microbes in response to stress and hormonal signals. Stem rot, caused by Macrophomina phaseolina adversely affects fiber production in jute. However, how wall related susceptibility affects ECM proteome remains undetermined in bast fiber crops. In order to develop ECM proteome of C. olitorius var. O-4, ECM fraction was isolated by mechanical disruption, CaCl2 extraction and enrichment. ECM fraction purity was assessed by 1-DE profiling in which the ECM fraction was found to be discrete from the crude extract and supernatant recovered during purification steps. Three biological replicates were performed for gel-based jute ECM proteomic analysis. MS/MS analysis of total extract and supernatants were identified as Rubisco or other chloroplastic proteins which were depleted in consecutive steps of purification depicting high degree of ECM purity. Fourteen bands of ECM enriched fraction were identified as canonical ECM localized proteins, e.g., beta-glucosidase, beta-d xylosidase, peroxidase, glycoside hydrolase and peroxiredoxin, confirming jute ECM protein purity and enrichment.
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DBT-National Institute of Plant Genome Research, New Delhi, India |
Gel-based experiment, Bottom-up proteomics |
2024-10-30 |
38572503
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| 48 |
IPD1344 |
QUATERNARY AND QUINARY ORGANIZATION OF RESPIRATORY COMPLEX SUBUNITS TO ADAPT PROTEOSTASIS-STRESS |
Dr Swasti Raychaudhuri |
Phase separation and reversible aggregation of proteins is a well-recognized adaptive strategy to survive stress. Here, we show that RCC subunits are engaged into improved super-quaternary organizations inside mitochondria during proteostasis stress. Assembly and oligomeric organizations of Complex II and V are consolidated while Complex I, III and IV are...
Phase separation and reversible aggregation of proteins is a well-recognized adaptive strategy to survive stress. Here, we show that RCC subunits are engaged into improved super-quaternary organizations inside mitochondria during proteostasis stress. Assembly and oligomeric organizations of Complex II and V are consolidated while Complex I, III and IV are increasingly incorporated into respiratory supercomplexes in multiple cell-lines with different proteostasis and metabolic demands. Further, our results suggest that improved supra-organization of respiratory complexes (iSRC) is an outcome of conformational optimization towards better enzyme activity and co-terminus to appearance of aggregates of RCC subunits in stressed cells. Simultaneous reversion of iSRC and disappearance of the aggregates during stress-withdrawal indicates complementarity between these quaternary and quinary proteome-reorganization mechanisms. iSRC appears to be the pre-emptive and deterministic ensemble over stochastic aggregation as it offers direct fitness-benefit.
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Centre for Cellular & Molecular Biology (CCMB |
Shotgun proteomics |
2024-11-16 |
32878939
|
| 49 |
IPD3807 |
QUATERNARY AND QUINARY ORGANIZATION OF RESPIRATORY COMPLEX SUBUNITS TO ADAPT PROTEOSTASIS-STRESS |
Dr. Swasti Raychaudhuri |
Phase separation and reversible aggregation of proteins is a well-recognized adaptive strategy to survive stress. Here, we show that RCC subunits are engaged into improved super-quaternary organizations inside mitochondria during proteostasis stress. Assembly and oligomeric organizations of Complex II and V are consolidated while Complex I, III and IV are...
Phase separation and reversible aggregation of proteins is a well-recognized adaptive strategy to survive stress. Here, we show that RCC subunits are engaged into improved super-quaternary organizations inside mitochondria during proteostasis stress. Assembly and oligomeric organizations of Complex II and V are consolidated while Complex I, III and IV are increasingly incorporated into respiratory supercomplexes in multiple cell-lines with different proteostasis and metabolic demands. Further, our results suggest that improved supra-organization of respiratory complexes (iSRC) is an outcome of conformational optimization towards better enzyme activity and co-terminus to appearance of aggregates of RCC subunits in stressed cells. Simultaneous reversion of iSRC and disappearance of aggregates during stress-withdrawal indicates complementarity between these quaternary and quinary proteome-reorganization mechanisms. iSRC appears to be the pre-emptive and deterministic ensemble over stochastic aggregation as it offers direct fitness-benefit.
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Centre for Cellular & Molecular Biology (CCMB |
Shotgun proteomics |
2024-11-16 |
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| 50 |
IPD2655 |
Aggregation of respiratory complex subunits marks the onset of proteotoxicity in proteasome inhibited cells |
Dr Swasti Raychaudhuri |
Proteostasis is maintained by optimum expression, folding, transport, and clearance of proteins. Deregulation of any of these processes triggers protein aggregation and is implicated in many age-related pathologies. Here, using quantitative proteomics and microscopy we show that aggregation of many nuclear-encoded mitochondrial proteins is an early protein-destabilization event during short-term...
Proteostasis is maintained by optimum expression, folding, transport, and clearance of proteins. Deregulation of any of these processes triggers protein aggregation and is implicated in many age-related pathologies. Here, using quantitative proteomics and microscopy we show that aggregation of many nuclear-encoded mitochondrial proteins is an early protein-destabilization event during short-term proteasome inhibition. Among these, Respiratory Chain Complex (RCC) subunits represent a group of functionally related proteins consistently forming aggregates under multiple proteostasis-stresses with varying aggregation-propensities. Sequence analysis reveals that several RCC subunits, irrespective of cleavable mitochondrial targeting sequence (MTS), contain low complexity regions (LCR) at N-terminus. Using different chimeric and mutant constructs we show that these low complexity regions partially contribute to intrinsic instability of multiple RCC subunits. Taken together, we propose that physicochemically driven aggregation of unassembled RCC subunits destabilizes their functional assembly inside mitochondria. This deregulates the biogenesis of respiratory complexes and marks the onset of mitochondrial dysfunction.
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Centre for Cellular & Molecular Biology (CCMB |
Shotgun proteomics, Gel-based experiment |
2024-11-16 |
30682348
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