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IIT-Madras researchers identify alternative source for anti-cancer drug Camptothecin

Will provide alternative to critically endangered Chinese and Indian tree species from which drug is currently sourced

Written by Anuradha Mascarenhas | Pune |
February 25, 2021 9:13:21 pm
IIT M 1200The research was led by Dr Srivastava and published recently in International Journal of Scientific Reports (a Nature Research Publication). (File)

Researchers at IIT-Madras have identified a sustainable and high-yielding alternative source for the anti-cancer drug Camptothecin. This novel microbial fermentation process can be an economically efficient method of production to fulfil the market demand at a large scale.

Topotecan and Irinotecan are two widely used anti-cancer drugs, which are produced by using Camptothecin as the lead molecule. More than a dozen derivatives of Camptothecin are under various stages of clinical trials for anti-cancer applications.

The molecule `Camptothecin’ is an alkaloid isolated from the Chinese tree Camptotheca acuminata and the Indian tree Nothapodytes nimmoniana.

At least 1,000 tonnes of plant material is required to extract just one tonne of Camptothecin, Dr Smita Shrivastava, associate professor, Department of Biotechnology, IIT Madras, told The Indian Express. However, due to extensive overharvesting to meet the market demand, both these plants are now critically endangered. The N nimmoniana population has seen more than a 20 per cent decline in the last decade alone, she added.

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IIT-Madras researchers have now developed an alternative method of Camptothecin production to meet the demand and conserve natural sources.

The research was led by Dr Srivastava and published recently in International Journal of Scientific Reports (a Nature Research Publication).

Highlighting the applications of this research, Dr Srivastava said, “The novelty of the work lies in the fact that unlike other potential microbial strains reported, this strain has been found to show sustainable production even beyond 100 generations. The plan now is to use the isolated novel strain for the development of a microbial fermentation based sustainable bioprocess for large scale in vitro production of Camptothecin, preferably in collaboration with interested Industrial partner(s).”

Cancer has been a leading cause of death worldwide, including in India. It is projected that by 2026, new cancer cases in India annually will reach 0.93 million in male and 0.94 million in female patients, according to a study published in Asian Pacific Journal of Cancer Prevention.

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