Related Experiment Video
Updated: Jun 30, 2026

Multiplexed Fluorescent Immunohistochemical Staining, Imaging, and Analysis in Histological Samples of Lymphoma
Published on: January 9, 2019
[Expression of PDCD5 in multiple myeloma and its relation with BCL-2]
Tie-Bin Jiang1, Xin Li, Jun Zhou
1Department of Hematology, Third Xiangya Hospital, Central South University, Changsha 410013, China.
Objective:
To determine the expression of apoptosis related gene PDCD5 in multiple myeloma (MM), and to analyze the relation between PDCD5 and BCL-2.
Methods:
The expressions of PDCD5 and BCL-2 protein and mRNA were determined by immunohistochemical staining method, flow cytometry (FCM) and reverse transcription polymerase chain reaction (RT-PCR) method in bone marrow mononuclear cells. We also analyzed the relation between PDCD5 and BCL-2.
Results:
Immunohistochemical staining showed that PDCD5 protein positive cell percentage, staining intensity index (SII) of PDCD5 protein, BCL-2 protein positive cell percentage, and SII of BCL-2 protein were (34.75 +/- 6.49)%, (281.16 +/- 75.33), (29.97 +/- 5.57)%, and (224.94 +/- 57.72) in the MM group and (52.98 +/- 5.84)%, (462.84 +/- 39.77), (5.56 +/- 1.95)%, and (27.84 +/- 9.75) in the control group (all P < 0.05). Results of FCM showed that PDCD5 protein positive percentage and mean fluorescence intensity of PDCD5 were (78.11 +/- 21.63)% and (61.73 +/- 11.04) in the MM group and (89.46 +/- 9.98)% and (353.04 +/- 123.26) in the control group (all P < 0.05). RT-PCR showed that relative expression of PDCD5 and BCL-2 mRNA were (0.33 +/ -0.07) and (0.33 +/- 0.08) in the MM group and (0.53 +/- 0.05) and (0.12 +/- 0.02) in the control group (all P < 0.05). The positive cell percentage of PDCD5 and BCL-2 protein was negative correlation (r = -0.86, P < 0.05); the expression of PDCD5 and BCL-2 mRNA was the same status (r = -0.90, P < 0.05).
Conclusion:
The expressions of PDCD5 protein and mRNA in MM patients are down-regulated, but the expressions of BCL-2 protein and mRNA are up-regulated. The mRNA and protein expression of PDCD5 and BCL-2 has negative correlation.
Insights
In multiple myeloma (MM), programmed cell death 5 (PDCD5) expression is reduced while BCL-2 expression is increased. PDCD5 and BCL-2 show a negative correlation in MM patients.
Area of Science:
- Molecular Biology
- Oncology
Context:
- Multiple myeloma (MM) is a hematological malignancy characterized by uncontrolled proliferation of plasma cells.
- Apoptosis-related genes play crucial roles in the pathogenesis and progression of MM.
- Understanding the expression patterns of key apoptosis regulators like PDCD5 and BCL-2 is vital for MM research.
Purpose:
- To investigate the expression levels of the apoptosis-related gene PDCD5 in multiple myeloma (MM).
- To analyze the relationship between PDCD5 and BCL-2, another key regulator of apoptosis, in MM.
Summary:
- This study quantified PDCD5 and BCL-2 protein and mRNA expression in MM patients and healthy controls using immunohistochemistry, flow cytometry, and RT-PCR.
- Results indicated significantly down-regulated PDCD5 expression and up-regulated BCL-2 expression in MM patients compared to controls.
- A significant negative correlation was observed between PDCD5 and BCL-2 expression at both protein and mRNA levels in MM.
Impact:
- The findings suggest that altered expression of PDCD5 and BCL-2 may contribute to the pathophysiology of multiple myeloma.
- This research provides insights into the molecular mechanisms underlying apoptosis dysregulation in MM.
- The identified negative correlation between PDCD5 and BCL-2 highlights potential therapeutic targets for MM treatment.
Related Concept Videos
Abnormal Proliferation
Differentiation of Common Myeloid Progenitor Cells
The Intrinsic Apoptotic Pathway
