לאחרונה דווח על פריצת דרך בתחום. מה השאלות האתיות והסכנות העולות מכך?

רקפת תבור | 18 ביוני 2023 | חדשות | 1 דק׳

מהם "עוברים סינתטיים" ומדוע מדענים מייצרים אותם?

ב-14 ביוני דיווחה פרופ' מגדלנה זרניקה גואז (Żernicka-Goetz) מאוניברסיטת קיימברידג' שבבריטניה, במהלך הכנס השנתי של האגודה הבינלאומית לחקר תאי גזע בבוסטון, כי הצליחה לפתח "מודל של עובר סינתטי" העשוי מתאי גזע של בני אדם. עם זאת, פרופ' גואז לא הציגה נתונים מפורטים מהמחקר שלה ולפיכך ספגה ביקורות רבות על הפרסום המוקדם שלה.

למחרת, ב-15 ביוני, פרופ' יעקוב חנא ממכון ויצמן פרסם באתר bioRxiv (המפרסם מאמרים בשלב "טרום ביקורת עמיתים") ממצאים ממחקר חדש שערך על תאי גזע אנושיים. פרופ' חנא טען שהשרה את תאי הגזע בחומרים ייעודיים וכך גרם להם להתמיין לקראת התפתחותם של שלייה, שק חלבון והעובר עצמו.

המחקרים של השניים מהווים פריצת דרך, כיוון שעד לרגע זה פותחו עוברים מתאי גזע של חיות שונות. פרופ' חנא, למשל, דיווח באוגוסט 2022 כי פיתח במעבדתו עוברי עכברים בעלי לב פועם ומערכת עיכול ומוח בשלב ראשוני.

רוצה לקרוא עוד?

להמשך קריאה הירשמו או התחברו

גידול עוברי עכבר סינטטיים במעבדה | צילום: AHMAD GHARABLI/AFP via Getty Images

גידול עוברי עכבר סינטטיים במעבדה | צילום: AHMAD GHARABLI/AFP via Getty Images

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רחוב במזרח ירושלים שובת

שביתה כללית באיו"ש במחאה על פעולות צה"ל ברצועת עזה

דורון פסקין

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דורון פסקין

האי הרד

מדוע טראמפ הטיל מכסים על איים עם פינגווינים?

צוות מגזין אפוק

שר הביטחון ישראל כ"ץ בביקור ביחידת איסוף מודיעין ושלל טכני (אמש"ט) של צה"ל

שר הביטחון חשף מסמך תיעוד שיחות בין איראן להנהגת חמאס שמראה את תמיכת איראן בתוכנית להשמדת ישראל

קרן זריהן

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דורון פסקין

הירשמו לניוזלטר שלנו וקבלו תוכן חדש למייל מדי חודש

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