Cell Suspension Culture

OUTLINE NOTES

Cell Suspension Culture (कोशिका निलम्बन संवर्धन):-

1. परिभाषा (Definition):-

·         जब एकल कोशिकाओं को द्रवित माध्यम में संवर्धित किया जाता है तो कोशिकाएं माध्यम में डूबी हुई अवस्था में संवर्धित होती हैं। इसे कोशिका निलम्बन संवर्धन कहते हैं।

(When single cells are cultured in a liquid medium, the cells are cultured in a submerged state in the medium. This is called cell suspension culture.)

·         इसे कोशिका संवर्धन भी कहते हैं।

(It is also called cell culture.)

2. सिद्धान्त (Principle):-

·         कैलस कोशिकाओं के असंगठित समुह के रूप में परिवर्धित होता है। इसलिए इसकी वृद्धि  विकास अवस्थाओं के दौरान अनेक कोशिकीय प्रक्रियाओं का अनुसरण करना बहुत कठिन होता है।

(Callus grows as an unorganized group of cells. Therefore it is very difficult to follow many cellular processes during its growth and development stages.)

·         कैलस संवर्धन की उपरोक्त सीमाओं से बचने के लिए स्वतंत्र कोशिकाओं  छोटे कोशिकीय समुहों का रासायनिक रूप से परिभाषित द्रव माध्यम में निलंबन के रूप में संवर्धन शुरू हुआ। इससे उनकी वृद्धि  विकास अवस्थाओं के दौरान आकारिकीय  जैव रासायनिक परिवर्तनों का अध्ययन आसान हो गया।

(To avoid the above limitations of callus culture, culturing of free cells and small cell masses in a chemically defined liquid medium began as a suspension. This made the study of morphological and biochemical changes easier during their growth and development stages.)

·         एक आदर्श कोशिका निलंबन प्राप्त करने के लिए अधिकतर एक भुरभुरे कैलस को उत्तेजित द्रव माध्यम में स्थानांतरित करते हैं जहाँ यह टूटकर तीव्रता से फैल जाता है।

(To obtain an ideal cell suspension, mostly a fragile callus is transferred into a stimulated liquid medium where it breaks down and spreads rapidly.)

·         बड़े कैलस टुकड़ों को निकालने के पश्चात केवल एकल कोशिकाओं  छोटे कोशिका समुहों को फिर से ताजा माध्यम में स्थानांतरित करते हैं। 2 – 3 सप्ताहों के पश्चात सक्रिय रूप से वृद्धि कर रही कोशिकाओं का निलंबन उत्पन्न होता है।

(After removing the larger callus pieces, only the single cells and small cell masses are again transferred to the fresh medium. After 2–3 weeks suspension of actively growing cells is produced.)

·         इस निलंबन को नए ताजा माध्यम में उप संवर्धन के द्वारा प्रवर्धित किया जा सकता है। आदर्श रूप से निलंबन संवर्धन में केवल एकल कोशिकाएं होनी चाहिए जो कार्यिकीय  जैव रासायनिक रूप से एक समान हों।

(This suspension can be propagated by sub-culturing in new fresh medium. Ideally suspension culture should consist of only single cells that are physiologically and biochemically identical.)


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