Molecular Immunology & Cellular Microbiology Laboratory
In context of the Indian sub-continent, Tuberculosis and Visceral Leishmaniasis are dreadful infectious diseases caused by Mycobacterium tuberculosis and Leishmania donovani respectively. The advent of extreme drug resistance has aggravated the situation. The search for newer molecular targets as well as alternative therapeutic strategies is clearly evident.
Using CRISPR/Cas9 mediated genome editing our lab tries to have a thorough understanding of the host factors governing parasite pathogenesis. We are looking into the roles of phosphatases and kinases in mediating parasite survival. Biochemical assays are being set-up for the functional characterization of macrophage factors phosphorylated by mycobacteria secreted virulence factors. Functional characterization and adaptive resistance mechanism studies are carried out for an essential Leishmania enzyme. Besides, the role of host factors that enable controlled phagosome maturation allowing efficient promastigote to amastigote differentiation as well as factors dampening macrophage proliferation but promoting amastigote proliferation would be studied.
We are also trying to envisage into host-directed immunomodulatory therapeutics against mycobacterial and leishmania infection that would overcome the pathogen-induced classical macrophage activation block and thereby re-enable them to kill the parasite. Drug repurposing approaches against a Leishmania specific essential enzyme using tri-cyclic anti-depressants are also being carried out whose application through the creation of reticulo-endothelial blockade would be tried out. We are also engaged in developing a rapid, low-cost, point-of-care diagnostic kit for extreme drug resistant TB.
Activation of the cAMP/protein kinase A signalling pathway by coronin 1 is regulated by cyclin-dependent kinase 5 activity. by Liu X*, BoseDasgupta S*, Jayachandran R, Studer V, Rühl S, Stiess M, Pieters J.(*contributed equally) FEBS Journal 590(2) 279-87 (2016)
Cytokine-Induced Macropinocytosis in Macrophages is regulated by 14-3-3ζ through its Interaction with Serine-Phosphorylated Coronin. (Journal Cover and Editors Choice Article with Podcast) by BoseDasgupta S and Pieters J FEBS Journal 282(7) 1167-81 (2015)
Coronin 1 regulates cognition and behavior through modulation of cAMP/protein kinase A signaling. by Jayachandran R*, Liu X*, BoseDasgupta S*, Mueller P*, Zhang LC, Genoud JS, Fossoud C, Gambino F., Khelfaoui M, Steiss M, Luthi A., Humeau Y and Pieters J (*contributed equally)) PLoS Biology 12(3) - (2014)
Coronin 1 trimerization is essential to protect mycobacteria within macrophages from lysosomal delivery by BoseDasgupta S and Pieters J. FEBS Letters 588(21) 3898-905 (2014)
Inflammatory stimuli reprogram Macrophage phagocytosis to macropinocytosis for the rapid elimination of pathogens. (Journal Cover Article)) by BoseDasgupta S and Pieters J PLoS Pathogens 10(4) - (2014)
Striking the Right Balance Determines TB or Not TB. by BoseDasgupta S, Pieters J. Frontiers in Immunology 5 - (2014)
The caspase-independent algorithm of programmed cell death in Leishmania induced by baicalein: the role of LdEndoG, LdFLAP1 and LdTatD by BoseDasgupta S, Das BB, Sengupta S, Roy A, Ganguly A, Tripathi G and Majumder HK Cell Death & Differentiation 15(10) 1629-40 (2008)
The large subunit of Leishmania topoisomerase I functions as the molecular steer in type IB topoisomerase. by BoseDasgupta S., Ganguly A., Das BB., Roy A., Khalkho NVM. and Majumder HK Molecular Microbiology 67 31-46 (2008)
Amino acids 39-456 of large subunit and 210-262 of small subunit constitute the minimal, functionally interacting fragments of the unusual heterodimeric topoisomerase IB of Leishmania by BoseDasgupta S, Das BB, Sengupta S, Ganguly A, Roy A., Tripathi G and Majumder HK Biochemical Journal 409 481-9 (2008)
A novel ATP binding cassette transporter, ABCG6 is involved in chemoresistance of Leishmania by 9. BoseDasgupta S., Ganguly A., Roy A., Mukherjee T and Majumder HK. Molecular Biochemical Parasitology 158(2) 176-88 (2008)
HIT-TB: Host Targeted Immunomodulatory Therapy for Tuberculosis using Bi-functional Pro-drug Constituted, Drug Loaded, Surface Functionalized Nanocapsules Department of Science and Technology(DST)
Elucidating SOCS1 and CISH Mediated Dampening of IFNg Signalling During Mycobacterial Pathogenesis using Genome Editing Technologies ISIRD, SRIC
Identifying the Host Substrates for the Mycobacterial Virulence Factor Protein Kinase G, its Functional Characterization in Context of Mycobacterial Survival DEPARTMENT OF BIOTECHNOLOGY, MINISTRY OF SC. and TECH
Understanding the Metabolic Adoptation Leading to Chemoresistance in Leishmania Against Novel Drugs that Target Unique Prokaryotic TopA Homolog Indian National Science Academy
Area of Research: Infection Biology
Area of Research: Host-parasite interaction and therapeutics
Area of Research: Molecular Biology and Biochemistry