Question

Can you briefly explain the XCI technique (X chromosome inactivation) and how this technique reveals evidence of multi/polyclonal origins? What about this technique that might allow for better/more precise detection of multi/polyclonal origins?

Answer 1

RONA which coats the how Chemosome states to be achieved in "PSC8. acate lenkemia. 2 X Choromosome inactivation (xeI) is a unique dosage compensation mellanism is mammals, enabling the equivalent exporession of x linked genes loeteseon xy males * xx females. Sizing the process of differentiation, on of the two * Comorosones in females is vandomoy selected y silenced by epigenetic changes. This is initiated by expression of long inactive' Choromosome. coding designated Jechniques of coonility de teel?ow to lay x cluemosome sinactirakow . Rebno genanning - Cooling xc I during reprogramming will allow specific a sresulting Associated somatic mutatiow – Diterentiation of clonal from reactive polyclonen finiscesses, o diagnosta e subtyping of Jou kanta X lymphoma, MRD monitoring in Immunoglobulin arrangement Ditten entiation of clonal from reactive ofpolyclonal processes, demonstration of clonálity, lineage, ditlerentiation of B-cell lymphoma ete. Receptor rea rearrangement Seenonstration of clonality n differentiation of Tell lymphoma fleukemia This techniques helps to reveal the monoclonal on polyclonal origins. In case of ovarian sevens lovedee line tumours (SBT) are charactenized ley lithen polyploid cene nescencies & papillas on the ovarian Burface gf on occupying a variable exteri Of panenenyman cyst atining. The pathogenacity of SBT Ongin has two mnajsiz hypothesis – "one is "monoclonal * othen is polyclonal. Tot so far, only * Cunomosome inactivation analysis has esow wed to study ceonality in multifocal SBT. It is the study of foss of soténo zy gosity (LDH) analysis of androgen receptor on the x chromosome. Lots of microsatellite mase kens are used in this process. Aften this study, it is evident that the tumour the scientists found the clenity of tumoun cell. .