Simultaneous quantification of alternatively spliced transcripts in a single droplet digital PCR reaction

Area of Science:

• Molecular Biology
• Genetics
• Biochemistry

Background:

• Human telomerase reverse transcriptase (hTERT) is crucial for telomere maintenance.
• Multiple alternatively spliced hTERT mRNA variants exist in human cells.
• Existing methods lack sensitivity and accuracy for simultaneous quantification of hTERT splice variants.

Purpose of the Study:

• To develop a sensitive and accurate method for simultaneous quantification of alternatively spliced hTERT mRNA.
• To enable direct comparison of different hTERT splice variants in a single reaction.

Main Methods:

• Utilized droplet digital PCR (ddPCR) for simultaneous quantification.
• Applied ddPCR to detect and quantify single deletion (α-/β+, α+/β-) and non-deletion (α+/β+), double deletion (α-/β-) hTERT transcripts.
• Developed a single-reaction ddPCR assay.

Main Results:

• ddPCR achieved sensitive and simultaneous digital quantification of hTERT splice variants.
• The ddPCR method allowed for manual quantification of all four major hTERT splice variants in one reaction.
• Eliminated the need for internal standards and multiple primer pairs required by qPCR.

Conclusions:

• ddPCR provides a superior method for analyzing hTERT splicing compared to qPCR.
• This technique facilitates accurate comparison of hTERT splice variants, crucial for understanding telomere biology and cancer.
• The ddPCR assay offers a valuable tool for research in telomere maintenance and cancer genetics.