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a potentially massive dwarf planet candidate beyond PlutoEating blueberries every day may ease depressive symptoms in older adultsEating blueberries every day may ease depressive symptoms in older adultsEating blueberries every day may ease depressive symptoms in older adultsIran warns of a 'new battlefield' after reported US strike on QeshmIran warns of a 'new battlefield' after reported US strike on QeshmIran warns of a 'new battlefield' after reported US strike on Qeshm
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Global • 2026-10-31, 19:10 GMT • ~1 min read

Scientists find how a common gut bacterium can trigger colon cancer

سائنسدانوں نے دریافت کیا کہ عام آنتوں کا بیکٹیریا کولون کینسر کیسے پیدا کر سکتا ہے

वैज्ञानिकों ने पाया कि आंत का एक आम जीवाणु कोलन कैंसर कैसे पैदा कर सकता है

Scientists find how a common gut bacterium can trigger colon cancer

Key points

اہم نکات

मुख्य बातें

  • Scientists at Johns Hopkins have identified the missing link behind how a common gut bacterium can help trigger colorectal cancer, solving a puzzle that had lasted for nearly two decades.
  • The bacterium, Bacteroides fragilis, is found in the intestines of up to 20 percent of healthy people, and it produces a toxin, known as BFT, that damages the colon's protective lining, causes chronic inflammation and promotes tumour formation.
  • The study, published in Nature, found that the toxin must first bind to a protein called claudin-4 on colon cells before it can cause damage.
  • جانز ہاپکنز کے سائنسدانوں نے وہ گمشدہ کڑی دریافت کر لی ہے جس سے معلوم ہوتا ہے کہ آنتوں کا ایک عام بیکٹیریا کولوریکٹل کینسر پیدا کرنے میں کیسے مدد کرتا ہے، اور یہ معمہ تقریباً دو دہائیوں سے حل طلب تھا۔ یہ بیکٹیریا، بیکٹیرائیڈز فراجیلس، صحت مند افراد میں سے 20 فیصد تک کی آنتوں میں پایا جاتا ہے، اور یہ بی ایف ٹی نامی زہر پیدا کرتا ہے جو آنت کی حفاظتی جھلی کو نقصان پہنچاتا ہے، دائمی سوزش پیدا کرتا ہے اور ٹیومر بننے میں مدد دیتا ہے۔ نیچر میں شائع ہونے والی تحقیق کے مطابق یہ زہر پہلے آنت کے خلیوں پر کلاؤڈن-4 نامی پروٹین سے جڑتا ہے، تب ہی نقصان پہنچا سکتا ہے۔ محققین نے کلاؤڈن-4 کی بنیاد پر ایک مالیکیولر ڈیکوائے بھی بنایا جس نے زہر کو روک کر چوہوں کو اس کے نقصان سے بچایا، جس سے اس طرح کے بیکٹیریل نقصان سے بچاؤ کا نیا راستہ مل سکتا ہے۔ یہ کام ابھی ابتدائی لیبارٹری مرحلے میں ہے اور انسانوں کے لیے علاج نہیں ہے۔
  • जॉन्स हॉपकिन्स के वैज्ञानिकों ने वह गुम कड़ी खोज ली है जिससे पता चलता है कि आंत का एक आम जीवाणु कोलोरेक्टल कैंसर पैदा करने में कैसे मदद कर सकता है, और यह पहेली लगभग दो दशकों से अनसुलझी थी। यह जीवाणु, बैक्टेरॉइडीज़ फ्रैजिलिस, स्वस्थ लोगों में से 20 प्रतिशत तक की आंतों में पाया जाता है, और यह बीएफटी नामक विष पैदा करता है जो कोलन की सुरक्षात्मक परत को नुकसान पहुँचाता है, पुरानी सूजन पैदा करता है और ट्यूमर बनने को बढ़ावा देता है। नेचर में प्रकाशित अध्ययन के अनुसार यह विष पहले कोलन कोशिकाओं पर क्लॉडिन-4 नामक प्रोटीन से जुड़ता है, तभी नुकसान पहुँचा सकता है। शोधकर्ताओं ने क्लॉडिन-4 पर आधारित एक आणविक डिकॉय भी बनाया जिसने विष को रोककर चूहों को उसके हानिकारक प्रभावों से बचाया, जिससे इस तरह के जीवाण्विक नुकसान से बचाव का नया रास्ता मिल सकता है। यह काम अभी शुरुआती प्रयोगशाला चरण में है और मनुष्यों के लिए उपचार नहीं है।

Scientists at Johns Hopkins have identified the missing link behind how a common gut bacterium can help trigger colorectal cancer, solving a puzzle that had lasted for nearly two decades. The bacterium, Bacteroides fragilis, is found in the intestines of up to 20 percent of healthy people, and it produces a toxin, known as BFT, that damages the colon's protective lining, causes chronic inflammation and promotes tumour formation. The study, published in Nature, found that the toxin must first bind to a protein called claudin-4 on colon cells before it can cause damage. The researchers also built a molecular decoy based on claudin-4 that intercepted the toxin and protected mice from its harmful effects, pointing to a possible new way to prevent this kind of bacterial damage. The work is still at an early, laboratory stage and is not yet a treatment for people.

جانز ہاپکنز کے سائنسدانوں نے وہ گمشدہ کڑی دریافت کر لی ہے جس سے معلوم ہوتا ہے کہ آنتوں کا ایک عام بیکٹیریا کولوریکٹل کینسر پیدا کرنے میں کیسے مدد کرتا ہے، اور یہ معمہ تقریباً دو دہائیوں سے حل طلب تھا۔ یہ بیکٹیریا، بیکٹیرائیڈز فراجیلس، صحت مند افراد میں سے 20 فیصد تک کی آنتوں میں پایا جاتا ہے، اور یہ بی ایف ٹی نامی زہر پیدا کرتا ہے جو آنت کی حفاظتی جھلی کو نقصان پہنچاتا ہے، دائمی سوزش پیدا کرتا ہے اور ٹیومر بننے میں مدد دیتا ہے۔ نیچر میں شائع ہونے والی تحقیق کے مطابق یہ زہر پہلے آنت کے خلیوں پر کلاؤڈن-4 نامی پروٹین سے جڑتا ہے، تب ہی نقصان پہنچا سکتا ہے۔ محققین نے کلاؤڈن-4 کی بنیاد پر ایک مالیکیولر ڈیکوائے بھی بنایا جس نے زہر کو روک کر چوہوں کو اس کے نقصان سے بچایا، جس سے اس طرح کے بیکٹیریل نقصان سے بچاؤ کا نیا راستہ مل سکتا ہے۔ یہ کام ابھی ابتدائی لیبارٹری مرحلے میں ہے اور انسانوں کے لیے علاج نہیں ہے۔

जॉन्स हॉपकिन्स के वैज्ञानिकों ने वह गुम कड़ी खोज ली है जिससे पता चलता है कि आंत का एक आम जीवाणु कोलोरेक्टल कैंसर पैदा करने में कैसे मदद कर सकता है, और यह पहेली लगभग दो दशकों से अनसुलझी थी। यह जीवाणु, बैक्टेरॉइडीज़ फ्रैजिलिस, स्वस्थ लोगों में से 20 प्रतिशत तक की आंतों में पाया जाता है, और यह बीएफटी नामक विष पैदा करता है जो कोलन की सुरक्षात्मक परत को नुकसान पहुँचाता है, पुरानी सूजन पैदा करता है और ट्यूमर बनने को बढ़ावा देता है। नेचर में प्रकाशित अध्ययन के अनुसार यह विष पहले कोलन कोशिकाओं पर क्लॉडिन-4 नामक प्रोटीन से जुड़ता है, तभी नुकसान पहुँचा सकता है। शोधकर्ताओं ने क्लॉडिन-4 पर आधारित एक आणविक डिकॉय भी बनाया जिसने विष को रोककर चूहों को उसके हानिकारक प्रभावों से बचाया, जिससे इस तरह के जीवाण्विक नुकसान से बचाव का नया रास्ता मिल सकता है। यह काम अभी शुरुआती प्रयोगशाला चरण में है और मनुष्यों के लिए उपचार नहीं है।

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