תפריט נגישות
ניגודיות עדינהניגודיות גבוהה
מונוכרום
הדגשת קישורים
חסימת אנימציה
פונט קריא
סגור
איפוס הגדרות נגישות
להורדת מודול נגישות חינם תפריט נגישותניגודיות עדינהניגודיות גבוההמונוכרוםהדגשת קישוריםחסימת אנימציהפונט קריאסגוראיפוס הגדרות נגישותלהורדת מודול נגישות חינםDan Mark Alon
Karin Mittelman
Eytan Stibbe
Stefanie Countryman
Louis Stodieck
Shankini Doraisingam
Dylan Mikeala Leal Martin
Eliran Raphael Hamo
Gur Pines
David Burstein
Monitoring astronauts' health during space missions poses many challenges, including rapid assessment of crew health conditions. Sensitive genetic diagnostics are crucial for examining crew members and the spacecraft environment. CRISPR-Cas12a, coupled with isothermal amplification, has proven to be a promising biosensing system for rapid, on-site detection of genomic targets. However, the efficiency and sensitivity of CRISPR-based diagnostics have never been tested in microgravity. We tested the use of recombinase polymerase amplification (RPA) coupled with the collateral cleavage activity of Cas12a for genetic diagnostics onboard the International Space Station. We explored the detection sensitivity of amplified and unamplified target DNA. By coupling RPA with Cas12a, we identified targets in attomolar concentrations. We further assessed the reactions' stability following long-term storage. Our results demonstrate that CRISPR-based detection is a powerful tool for on-site genetic diagnostics in microgravity, and can be further utilized for long-term space endeavors to improve astronauts' health and well-being.
Dan Mark Alon
Karin Mittelman
Eytan Stibbe
Stefanie Countryman
Louis Stodieck
Shankini Doraisingam
Dylan Mikeala Leal Martin
Eliran Raphael Hamo
Gur Pines
David Burstein
Monitoring astronauts' health during space missions poses many challenges, including rapid assessment of crew health conditions. Sensitive genetic diagnostics are crucial for examining crew members and the spacecraft environment. CRISPR-Cas12a, coupled with isothermal amplification, has proven to be a promising biosensing system for rapid, on-site detection of genomic targets. However, the efficiency and sensitivity of CRISPR-based diagnostics have never been tested in microgravity. We tested the use of recombinase polymerase amplification (RPA) coupled with the collateral cleavage activity of Cas12a for genetic diagnostics onboard the International Space Station. We explored the detection sensitivity of amplified and unamplified target DNA. By coupling RPA with Cas12a, we identified targets in attomolar concentrations. We further assessed the reactions' stability following long-term storage. Our results demonstrate that CRISPR-based detection is a powerful tool for on-site genetic diagnostics in microgravity, and can be further utilized for long-term space endeavors to improve astronauts' health and well-being.
