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Missing Link Found: How Indian Scientists Unlocked New Alzheimer's and Cancer Therapies

Scientists in India have made a major breakthrough in understanding how our cells clean themselves. They found that a group of proteins, known as the exocyst complex, plays a key role in the vital "self-eating" process called autophagy. When this cleanup system fails, it's linked to serious diseases like Alzheimer's and cancer. This discovery could pave the way for entirely new treatments by helping us control this cellular process.

Key Points: JNCASR Scientists Discover Exocyst Role in Autophagy for Disease Therapy

  • JNCASR team discovered the exocyst complex is vital for forming cellular "trash bags"
  • Autophagy failure is linked to neurodegenerative diseases like Alzheimer's
  • The process acts as a double-edged sword in cancer progression
  • Findings could lead to therapies that modulate autophagy to restore health
2 min read

Indian scientists find missing link in body's cells to boost therapies for Alzheimer's, cancer

Indian researchers identify the exocyst protein complex as a crucial regulator of cellular autophagy, opening new therapeutic avenues for Alzheimer's, Parkinson's, and cancer.

"When this complex is missing, the cell’s bag-making factory stops working properly. - Research findings from JNCASR"

New Delhi, Dec 19

Researchers from the Jawaharlal Nehru Centre for Advanced Scientific Research (JNCASR) have uncovered a surprising player in autophagy, or the “self-eating” process that removes damaged parts of cells that can pave the way for developing therapies for diseases such as Alzheimer’s, Parkinson's, and cancer.

Autophagy is a key biological process where cells clear out damaged and unwanted materials. When a cell fails to clear waste, its health suffers, especially in long-lived neurons. The autophagy pathway, which removes damaged material and defends against infections, is disrupted in diseases like Alzheimer’s and Huntington’s.

In cancer, autophagy plays dual roles. Autophagy initially prevents cancer but later supports tumour growth. Autophagy also acts as a tumour suppressor by maintaining genome integrity and cellular homeostasis by clearing cellular junk such as protein aggregates and damaged mitochondria.

But it is also a double-edged sword as certain types of cancer cells hijack autophagy for their own survival and propagation. Understanding its regulation is crucial for the development of effective therapies.

The team from JNCASR, an autonomous institution under the Department of Science and Technology (DST), found that a group of proteins called the exocyst complex, which normally helps move important molecules to the cell surface, also plays a key role in autophagy.

This complex comprises a team of 8 proteins; interestingly, 7 of the 8 proteins are required to help the cell grow the trash bag so that it can completely wrap up the waste. When this complex is missing, the cell’s bag-making factory stops working properly and even starts producing faulty, non-functional factories.

The researchers led by Prof. Ravi Manjithaya used simple yeast cells to elucidate the formation of autophagosomes (cellular “trash bags”), thereby providing insights into how this vital process operates in higher organisms.

They elucidated the mechanism by which a protein complex, exocyst, previously recognised for its role in secretion, also contributes to the autophagy pathway, which is crucial for maintaining cellular health.

Since defects in autophagy are linked to several neurodegenerative diseases and cancers, the findings published in the journal Proceedings of the National Academy of Sciences will open new avenues for modulating this pathway to restore cellular balance and develop potential therapeutic.

- IANS

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Reader Comments

R
Rohit P
Amazing discovery! The analogy of the "trash bag" factory makes it so easy to understand. It's fascinating how a process studied in simple yeast can have such huge implications for human diseases like Alzheimer's. Kudos to the team!
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Aman W
This is the kind of research we need to fund more. While it's a great breakthrough, I hope the findings translate into actual therapies quickly and are made affordable for the common person in India. The gap between lab and pharmacy is often too wide.
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Sarah B
The dual role in cancer is so complex. It's like the cell's cleaning process can be hijacked. Profound research. Hope this leads to smarter drugs that can turn autophagy on or off as needed for treatment.
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Vikram M
PNAS is a top-tier journal! Publishing there shows the quality of the work. We need more headlines about our scientists and less about politics. This is real nation-building. More power to DST and our researchers!
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Nisha Z
As a biology student, this is incredibly exciting. Understanding the exocyst complex's role is a big piece of the puzzle. It reminds us that basic science is the foundation for all medical advances. Time to dive into the paper! 📚

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