Skip to main content

Table 1 PCR protocols used for Leishmania detection in dog samples

From: Evaluation of four molecular methods to detect Leishmania infection in dogs

Protocol

Primer sequence

Amplicon size (bp)

PCR conditions (final concentration)

Cycling conditions

Reference

Nested SSU rRNA-PCR

1st PCR:

R221: GGTTCCTTTCCTGATTTACG

R332: GGCCGGTAAAGGCCGAATAG

603

10 μl DNA, 2 mM MgCl2, 0.2 mM dNTPs, 15 pmol primers, 1.4U Taq, 1× buffer (Promega)

den.: 94 °C (30'); ann.: 60 °C (30'); ext.: 72 °C (30'); 35 cycles

[34]

2nd PCR:

R223: TCCATCGCAACCTCGGTT

R333: AAAGCGGGCGCGGTGCTG

358

5 μl 1st PCR proda., 2 mM MgCl2, 0.2 mM dNTPs, 1.5 pmol primers, 0.7U Taq, 1× buffer (Promega)

den.: 94 °C (30'); ann.: 65 °C (30'); ext.: 72 °C (30'); 32 cycles

[10]

ITS1-PCR

LITSR: CTGGATCATTTTCCGATG

L5.8S: TGATACCACTTATCGCACTT

311

2 μl DNA, 1.5 mM MgCl2, 0.2 mM dNTPs, 25 pmol primers, 1U Taq, 1× buffer (Promega)

den.: 95 °C (20'); ann.: 53 °C (20'); ext.: 72 °C (60'); 32 cycles

[35]

MC-PCR

MC1: GTTAGCCGATGGTGGTCTTG

MC2: CACCCATTTTTCCGATTTTG

447

2 μl DNA, 3 mM MgCl2, 0.2 mM dNTPs, 15 pmol primers, 1U Taq, 1× buffer (Promega)

den.: 94 °C (30'), ann.: 60 °C (30'); ext.: 72 °C (20'); 30 cycles

[13]

Uni21/Lmj4-PCR

Uni21: GGGGTTGGTGTAAAATAGGCC

Lmj4b: CTAGTTTCCCGCCTCCGAG

800

2 μl DNA, 1.5 mM MgCl2, 25 pmol primers, 12,5 μl Biomix (Bioline)

den.: 94 °C (30), ann.: 62 °C (30'); ext.: 72 °C (45'); 35 cycles

[36]

  1. Abbreviations: bp base pairs, den. denaturation, ann. annealing, ext. extension, prod. product, PCR polymerase chain reaction, MC minicircle, ITS1 internal transcribed spacer 1, rRNA ribosomal RNA gene, SSU small subunit
  2. aPCR product was previously diluted 1:200 in ultra-pure water
  3. bUni21 primer based on a conserved region of a Leishmania major kinetoplastid minicircle sequence, and Lmj4 based on the variable region of the same L. major sequence