Other Immunology and Infectious Disease Commons^™

Development Of Novel Plasminogen Activators From Fragments Of Streptokinase Enzyme, Vijay G Mr

Theses and Dissertations

Thrombotic disorders such as myocardial infarction, ischemic stroke, pulmonary embolism and deep vein thrombosis remain major causes of mortality and disability worldwide, creating a continuing need for effective, safe and affordable thrombolytic therapy. Streptokinase is one of the most widely used plasminogen activators because of its activity, low cost and broad availability. However, its wider clinical utility is limited by high immunogenicity, allergic reactions, neutralizing antibody formation and poor suitability for repeat administration. This thesis aimed to develop novel streptokinase-derived plasminogen activators by identifying smaller functional fragments that retain thrombolytic activity while potentially reducing immunogenicity.

A literature-guided fragment-based strategy was …

Mycobacteria Infection Induced Cascade Of Epigenetic Alterations Promote Training In Bystander Macrophages, Shah E. Jahan Gulzar Mr

Theses and Dissertations

Mycobacterium tuberculosis (Mtb) remodels host cell functions to support its intracellular persistence. While the effects of Mtb infection on infected macrophages are well characterized, responses of uninfected bystander cells in the same microenvironment remain poorly understood. Here, we show that Mtb infection triggers widespread epigenetic reprogramming not only in infected macrophages but also in neighbouring bystander cells. These bystander macrophages acquire active chromatin marks, exhibit distinct transcriptional changes, and display enhanced immune responsiveness, thereby increasing resistance to both homologous and heterologous infections. We identify interleukin-1 beta secreted by infected cells as a key mediator of this process. Functionally, trained bystander …

Isolation And Characterization Of Nut Shell Proteins From Arachis Hypogea Linn. And Cocos Nucifera Linn. And Its Effect On Macrophage Activation To Treat Visceral Leishmaniasis, Suhatha S

Theses and Dissertations

Glycoproteins are among several immunomodulatory agents known to activate the innate immune system. Plant derived glycoproteins are a generous source of glycoproteins that could be utilized as cost effective preparations for therapeutics. Isolating glycoproteins from agricultural by- products with the intention to use them against Visceral Leishmaniasis (VL) was the focus in this doctoral study. The two nut shells, Arachis hypogea L. (Groundnut) and Cocos nucifera L. (Coconut), were used for the isolation of glycoprotein used in the study. Crude glycoproteins from the A. hypogea L. (AHP-C) were isolated and fractioned. AHP-F2 was identified as 28.37 kDa Mannose/Glucose binding lectin …