Researchers at the esteemed Indian Institute of Technology Kanpur (IIT Kanpur) have made a groundbreaking advancement in biosensor technology by developing a novel antibody-based biosensor. This biosensor is designed to meticulously monitor the activation of G protein-coupled receptors (GPCRs) within live cells. GPCRs, being the largest family of receptor proteins in human cells, are the targets of more than one-third of all clinically prescribed medicines. The research, spearheaded by Prof. Arun K. Shukla and his team, represents a significant leap in understanding and leveraging GPCRs for drug development and therapy.
For over a decade, the research team at IIT Kanpur has been dedicated to unraveling the intricacies of GPCR biology. GPCRs play a pivotal role in the development of new drugs and therapies due to their widespread presence and influence within the human body. The newly developed biosensor marks a major milestone in surmounting the technical barriers associated with monitoring receptor activation within living cells.
Typically, GPCRs remain dormant until they are stimulated by external signals such as light, hormones, or small molecules. Once activated, they initiate signal transduction processes vital to human physiology. However, real-time monitoring of these activations within live cells has been a formidable challenge. To address this, the research team at IIT Kanpur engineered an antibody-based sensor, known as a nanobody, that selectively binds to GPCRs upon activation and in conjunction with arrestins. This binding event triggers an enzymatic reaction, leading to the generation of a measurable luminescence signal.
Prof. Arun K. Shukla emphasized the uniqueness of the biosensor, highlighting its ability to detect GPCR activation without necessitating any modifications to the receptors themselves. This breakthrough opens up new avenues for visualizing these receptors in disease contexts, thereby offering valuable insights for therapeutic interventions. Annu Dalal, a Ph.D. student at IIT Kanpur and one of the lead authors of the study, underlined the versatility of the biosensor in monitoring GPCR localization within different sub-cellular compartments. This capability provides critical information about downstream signaling mechanisms, a crucial aspect in advancing GPCR-related drug discovery efforts.
The research collaboration between IIT Kanpur and Prof. Josef Lazar’s laboratory at the Institute of Organic Chemistry and Biochemistry, Czech Academy of Sciences, Prague, was instrumental in this pioneering work. Supported by an Indo-Czech joint research initiative funded by the Department of Science and Technology (DST), Government of India, the findings of this study have been disseminated in the prestigious peer-reviewed journal Proceedings of the National Academy of Sciences (PNAS), USA. The project involved a dedicated team of researchers including Parishmita Sarma, Manis Yadav, Sudha Mishra, Nashrah Zaidi, Divyanshu Tiwari, and Nabarun Roy.
This groundbreaking achievement further solidifies IIT Kanpur’s extensive research in molecular and structural biology, paving the way for innovative drug discovery and therapeutic advancements. Established in 1959 and recognized as an Institute of National Importance by the Government of India, IIT Kanpur has a rich legacy of excellence in science and engineering education, driving impactful contributions to research and development globally.
Key Takeaways:
– The novel biosensor developed by IIT Kanpur researchers enables real-time monitoring of GPCR activation in live cells without the need for receptor modifications.
– This breakthrough offers new opportunities for visualizing GPCRs in disease contexts, enhancing our understanding of their role in human physiology and disease.
– The biosensor’s versatility in tracking GPCR localization within different cellular compartments provides valuable insights into downstream signaling mechanisms critical for drug discovery.
– The collaborative effort between IIT Kanpur and Prof. Josef Lazar’s laboratory has been pivotal in advancing biosensor technology for studying GPCRs, supported by the Indo-Czech joint research initiative.
– This pioneering research contributes significantly to IIT Kanpur’s legacy of excellence in molecular and structural biology, fostering innovative pathways for drug development and therapeutic innovation.
Tags: downstream
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