Abstract
Bone marrow biopsy depends on tissue morphology, immunohistochemical staining, and moleculardetection. Tissue pretreatment is required for bone marrow samples, from clinical specimen acquisition to pathological reporting, but during the process, proteins and nucleic acids are often altered because of the acid in fixation and decalcification solutions. In our study, we present an easy and effective pretreatment protocol and compared this novel pretreatment protocol (Set 2) with an existing traditional pretreatment process (Set 1) using tissue morphology, IHC staining, and molecular pathological analyses. Granulocytic IHC markers showed more intensive staining in samples of Set 2 than in those of Set 1. The Set 2 protocol provided a higher DNA yield and less fragmentation; moreover, samples processed with the Set 2 protocol could be subsequently used in FISH and DNA sequencing assays. Our optimized novel pretreatment protocol could better protect proteins and DNA molecules while maintaining good cell morphology compared to traditional pretreatment The novel pretreatment reagents could role as a reference by more laboratories for pretreating bone marrow biopsy samples and scientific research.
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