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🇮🇳 Indian Astronaut Returns to Space After 41 Years: Shubhanshu Shukla Aboard Axiom-4 Mission to ISS

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In a landmark moment for India's space ambitions, Indian astronaut Shubhanshu Shukla has blasted off to the International Space Station (ISS) as part of the Axiom-4 mission , marking the country's return to human spaceflight after a 41-year hiatus . This historic launch from NASA’s Kennedy Space Center in Florida has not only reignited national pride but also officially kickstarted India’s human spaceflight programme . The mission, operated by Axiom Space , includes a four-member international crew that will spend 14 days in orbit , conducting scientific research, outreach programs, and various commercial activities. This momentous occasion places India among a select group of nations capable of sending humans into space and reflects the growing prowess of the Indian space sector . A New Chapter: Shubhanshu Shukla and India’s Astronautical Comeback The last Indian to go to space was Rakesh Sharma in 1984, aboard the Soviet spacecraft Soyuz T-11. Now, in 2025, Shubhanshu...

Selective Silencing: Impact on Genetic Expression and Disease Outcomes

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Selective Silencing: Understanding Its Role in Disease Outcomes and Genetic Expression

Researchers at Columbia University have revealed the fascinating concept of selective silencing and its potential impact on disease outcomes. This process involves the selective inactivation of one copy of a gene inherited from one parent, which can influence genetic expression and potentially affect disease susceptibility. Here's a detailed explanation:

1. Understanding Selective Silencing

  • Gene Copies in Cells: Every cell in the body (except sperm and eggs) contains two copies of each gene, inherited from both parents.
  • Selective Inactivation: In some cells, one of the copies of a gene is selectively silenced, meaning it is blocked from expressing its genetic message. This selective silencing can affect how genes function and influence an individual's overall health.

2. Significance of Selective Silencing

  • Blocking Gene Messages: Silencing refers to the process of preventing a gene from sending its message, essentially turning off one parent’s version of the gene.
  • Impact on Disease: This process could explain why some individuals who carry disease-linked genes do not show symptoms. The silencing of one parent’s gene copy might prevent the expression of a disease-causing mutation, keeping the individual symptom-free despite carrying the genetic predisposition.

3. Potential Implications for Health

  • Understanding selective silencing could lead to new insights into genetic diseases, their expression, and potential treatments. It may also provide clues as to why certain genetic diseases remain dormant or asymptomatic in some carriers.

Selective Silencing is an emerging concept with profound implications for genetics, disease management, and healthcare, offering a new avenue for understanding and treating genetic disorders.

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