aprofarm

BDNF Val66Met Polymorphism, the Allele-Specific Analysis by QRT-PCR – a Novel Protocol

Molecular Blood Group Screening in Donors from Arabian Countries and Iran Using High-Throughput MALDI-TOF Mass Spectrometry and PCR-SSP

Background and aims: Only little is known about blood groups other than ABO blood groups and Rhesus factors in Arabian countries and Iran. During the last years, increased migration to Central Europe has put a focus on the question how to guarantee blood supply for patients from these countries, particularly because hemoglobinopathies with the need of regular blood support are more frequent in patients from that region. Therefore, blood group allele frequencies should be determined in individuals from Arabian countries and Iran by molecular typing and compared to a German rare donor panel.
Methods: 1,111 samples including 800 individuals from Syria, 147 from Iran, 123 from the Arabian Peninsula, and 41 from Northern African countries were included in a MALDI-TOF MS assay to detect polymorphisms coding for Kk, Fy(a/b), Fy<sub>null</sub>, C<sub>w</sub>, Jk(a/b), Jo(a+/a-), Lu(a/b), Lu(8/14), Ss, Do(a/b), Co(a/b), In(a/b), Js(a/b), Kp(a/b), and variant alleles RHCE*c.697C>G and RHCE *c.733C>G. Yt(a/b), S-s-U-, Vel<sub>null</sub>, Co<sub>null</sub>, and RHCE *c.667G>T were tested by PCR-SSP.
<strong class=”sub-title”>
Results: </strong> Of the Arabian donors, 2% were homozygous for the <i>FY</i> *<i>02.01N</i> allele (Fy<sub>null</sub>), and 15.7% carried the heterozygous mutation. However, 0.8% of the German donors also carried 1 copy of the allele. 3.6% of all and 29.3% of Northern African donors were heterozygous for the <i>RHCE</i> *<i>c.733C>G</i> substitution, 0.4% of the Syrian probands were heterozygous for <i>DO</i> *<i>01/DO</i> *<i>01.-05</i>, a genotype that was lacking in German donors.

amfiSure qGreen Q-PCR Master Mix(2X), No Rox

Q5600-002 2x1ml
EUR 248.4

amfiSure qGreen Q-PCR Master Mix(2X), No Rox

Q5600-005 5x1ml
EUR 322.8

amfiSure qGreen Q-PCR Master Mix(2X), No Rox

Q5600-010 10x1ml
EUR 537.6

amfiSure qGreen Q-PCR Master Mix(2X), No Rox

Q5600-050 50x1ml
EUR 2085.6

amfiSure qProbe Q-PCR Master Mix(2X), No Rox

Q5700-001 1ml
EUR 208.8

amfiSure qProbe Q-PCR Master Mix(2X), No Rox

Q5700-002 2x1ml
EUR 319.2

amfiSure qProbe Q-PCR Master Mix(2X), No Rox

Q5700-005 5x1ml
EUR 562.8

amfiSure qProbe Q-PCR Master Mix(2X), No Rox

Q5700-010 10x1ml
EUR 886.8

amfiSure qProbe Q-PCR Master Mix(2X), No Rox

Q5700-050 50x1ml
EUR 3462

2×Taq PCR Master Mix(with dye)

K1034-1 1 ml
EUR 87.6

Semi-volatile Organics Mix

76-BIG-MIX 1ML
EUR 150.48

0.2ML THIN WALL PCR TUBES, NO CAP. CLEAR

PCR-02-NC 1000/pk
EUR 381.6
Description: PCR Plates & Tubes; PCR Tubes - Axygen

Ready? PCR Mix

M1127-1000 each
EUR 614.4

Ready? PCR Mix

M1127-200 each
EUR 229.2

Rigor? PCR Mix

M1132-200 each
EUR 385.2

Breeze? PCR Mix

M1134-200 each
EUR 320.4

Distant? PCR Mix

M1136-200 each
EUR 352.8

Advance? PCR Mix

M1139-200 each
EUR 451.2

Volatile Organics Mix (76 Components)

8260-BIG-MIX 1ML
EUR 296.4

Phenols Mix (2000ppm) - 5.5mL Bottle

ECS-N-006 5.5ML
EUR 118.56

Benzidines Mix (2000ppm) - 5.5mL Bottle

ECS-N-007 5.5ML
EUR 80.94

PAH Mix (2000ppm) - 5.5mL Bottle

ECS-N-032 5.5ML
EUR 255.36

8260 ISTD Mix (15mL bottle)

ECS-Z-041 15ML
EUR 251.94

Egg Drop Syndrome RT PCR kit

RTq-V026-100D 100T
EUR 860.4

Egg Drop Syndrome RT PCR kit

RTq-V026-150D 150T
EUR 969.6

Egg Drop Syndrome RT PCR kit

RTq-V026-50D 50T
EUR 717.6

lyophilised real-time PCR Master Mix for dual labeled probes

M-PCR-156L 960 reactions x 20 µl
EUR 900.68
Description: lyophilised real-time PCR Master Mix for dual labeled probes

lyophilised real-time PCR Master Mix for dual labeled probes

M-PCR-156S 192 reactions x 20 µl
EUR 225.3
Description: lyophilised real-time PCR Master Mix for dual labeled probes

Individual Reaction Mix 1

G065-1 200 reactions
EUR 200.4

dNTP Mix (1 ml)

9002-1 each
EUR 183.6

7078D 1 PIPET 1ML STERILE STERILE

7078D-1 50/pk
EUR 216
Description: Disposable Pipets; Disposable Pipets, Serological, Misc

Methylamp PCR Enhancer 

R-1002
  • EUR 185.28
  • EUR 90.20
  • 400 Reactions
  • 400 Reactions

Semivolatile ISTD Mix (4000ppm) - 5.5mL Bottle

ECS-N-001 5.5ML
EUR 297.54

Acid Spiking Mix (2000ppm) - 5.5mL Bottle

ECS-N-004 5.5ML
EUR 66.12

Semivolatile TCLP Mix (2000ppm) - 5.5mL Bottle

ECS-N-018 5.5ML
EUR 230.28

PCR-EZ D-PCR MASTER MIX

BS294 100RXN, 100prep
EUR 112.2

Bottle Alpha amber 125ml no cap

BOT2043 PK104
EUR 81.4

Bottle Duran Amber 1L No Cap

BOT7630 EACH
EUR 59.28

Bottle Duran Amber 2L No Cap

BOT76320 PK10
EUR 918.84

Bottle Bijou Hw 7ml No Cap

128139S PK255
EUR 145.58

amfiSure PCR Master Mix

P0311-010 2x50 rxns
EUR 151.2

amfiSure PCR Master Mix

P0311-025 5X50 rxns
EUR 198

amfiSure PCR Master Mix

P0311-050 10X50 rxns
EUR 262.8

amfiSure PCR Master Mix

P0311-100 10x1ml
EUR 343.2

amfiSure PCR Master Mix

P0311-125 15X50 rxns
EUR 333.6

amfiSure PCR Master Mix

P0311-200 20x1ml
EUR 562.8

amfiSure PCR Master Mix

P0311-250 50x50 rxns
EUR 902.4

amfiSure PCR Master Mix

P0311-500 100x50 rxns
EUR 1509.6

amfiXpand PCR Master Mix

P0331-010 2X50 rxns
EUR 181.2

amfiXpand PCR Master Mix

P0331-025 5X50 rxns
EUR 327.6

amfiXpand PCR Master Mix

P0331-050 10X50 rxns
EUR 537.6

amfiXpand PCR Master Mix

P0331-250 50x50 rxns
EUR 2247.6

Ready? PCR Mix-Dye

M1128-1000 each
EUR 614.4

Ready? PCR Mix-Dye

M1128-200 each
EUR 229.2

Image Ready? PCR Mix

M1129-200 each
EUR 352.8

Robust Ready? PCR Mix

M1130-1000 each
EUR 738

Robust Ready? PCR Mix

M1130-200 each
EUR 255.6

Rigor? PCR Mix-Dye

M1133-200 each
EUR 385.2

Breeze? PCR Mix-Dye

M1135-200 each
EUR 320.4

Distant? PCR Mix-Dye

M1137-200 each
EUR 352.8

Image Distant? PCR Mix

M1138-200 each
EUR 385.2

Advance? PCR Mix-Dye

M1140-200 each
EUR 451.2

Fire Start? PCR Mix

M1141-200 each
EUR 451.2

Whole Blood PCR Mix

M1143-200 each
EUR 385.2

HotTaq Probe qPCR Mix (no ROX)

BT11002 250rxn
EUR 130.8
Description: High quality HotTaq polymerase for different PCR variations and downstream applications.

HotTaq EvaGreen qPCR Mix (no ROX)

BT11102 250rxn
EUR 147.6
Description: High quality HotTaq polymerase for different PCR variations and downstream applications.

HotTaq EvaGreen HRM Mix (no ROX)

BT11202 250rxn
EUR 147.6
Description: High quality HotTaq polymerase for different PCR variations and downstream applications.

Egg Drop Syndrome One-Step PCR kit

Oneq-V026-100D 100T
EUR 1039.2

Egg Drop Syndrome One-Step PCR kit

Oneq-V026-150D 150T
EUR 1177.2

Egg Drop Syndrome One-Step PCR kit

Oneq-V026-50D 50T
EUR 861.6

Volatile Organics Mix (Low Level)

60-BIG-MIX-200 1ML
EUR 116.28

Volatile Organics Mix (High Level)

60-BIG-MIX-2000 1ML
EUR 165.3

7077B PIPET SHRTY 1ML

7077B-1 250/pk
EUR 277.2
Description: Disposable Pipets; Disposable Pipets, Serological, Misc

7078B PIPET SHRTY 1ML

7078B-1 250/pk
EUR 288
Description: Disposable Pipets; Disposable Pipets, Serological, Misc

NVHO-1, 4 oz. bottle

NVHO-1 4 oz
EUR 42
Description: NVHO-1, 4 oz. bottle

Base/Neutral Spiking Mix (1000ppm) - 5.5mL Bottle

ECS-N-005 5.5ML
EUR 66.12

Semivolatile ISTD Mix (6) (2000ppm) - 5.5mL Bottle

ECS-N-201 5.5ML
EUR 150.48

The egg drop syndrome (76) RT PCR kit

RTq-V044-100D 100T
EUR 860.4

The egg drop syndrome (76) RT PCR kit

RTq-V044-150D 150T
EUR 969.6

The egg drop syndrome (76) RT PCR kit

RTq-V044-50D 50T
EUR 717.6

lyophilised real-time PCR Master Mix with SYBR® Green fluorescent DNA stain

M-PCR-173L 960 reactions x 20 µl
EUR 789.36
Description: lyophilised real-time PCR Master Mix with SYBR® Green fluorescent DNA stain

lyophilised real-time PCR Master Mix with SYBR® Green fluorescent DNA stain

M-PCR-173S 192 reactions x 20 µl
EUR 197.34
Description: lyophilised real-time PCR Master Mix with SYBR® Green fluorescent DNA stain

SensiFAST Lyo-Ready No-ROX Mix, 2x

BIO-11060 10 x 10ml Ask for price

SensiFAST Lyo-Ready No-ROX Mix, 2x

BIO-11061 5ml Ask for price

SensiFAST Probe No-ROX Mix, 50 mL

BIO-86050 5000 rxn Ask for price

SensiFAST SYBR No-ROX Mix, 50 mL

BIO-98050 5000 rxn Ask for price

SYBR Green qPCR Master Mix (No ROX)

HY-K0523 5 mL (500 rxns )
EUR 308.4

Accuris qMax Probe No Rox qPCR Mix

PR2001-N-1000 1 PC
EUR 561.29

PRICE DROP

110-012 4 x 1000 µl
EUR 159.6

PRICE DROP

110-012L 5x 4 x 1000 µl
EUR 621.6

PRICE DROP

110-012XL 10x 4 x 1000 µl
EUR 1126.8

MyTaq Blood PCR Mix, 2x

BIO-25053/S Sample Ask for price

MyTaq Blood PCR Mix, 2x

BIO-25054 250 Reactions Ask for price

amfiSure Prime PCR Master Mix

P1311-025 5X50 rxns
EUR 193.2

amfiSure Prime PCR Master Mix

P1311-050 10X50 rxns
EUR 262.8

amfiSure Prime PCR Master Mix

P1311-125 15X50 rxns
EUR 327.6

amfiSure Prime PCR Master Mix

P1311-500 100x50 rxns
EUR 1485.6

amfiSure Advanced PCR Master Mix

P2311-025 5X50 rxns
EUR 198

amfiSure Advanced PCR Master Mix

P2311-050 10X50 rxns
EUR 267.6

amfiSure Advanced PCR Master Mix

P2311-125 15X50 rxns
EUR 338.4

amfiSure Advanced PCR Master Mix

P2311-250 50x50 rxns
EUR 902.4

amfiSure Advanced PCR Master Mix

P2311-500 100x50 rxns
EUR 1534.8

mRNAExpress Tail PCR mix (5uM)

MR-TAIL-PR 100 ul
EUR 196.8

Robust Ready? PCR Mix-Dye

M1131-1000 each
EUR 738

Robust Ready? PCR Mix-Dye

M1131-200 each
EUR 255.6

Fire Start? PCR Mix-Dye

M1142-200 each
EUR 451.2

AXYPREP MAG PCR NORMALIZER KIT- 1 ML - (SAMPLE SIZE)

MAG-PCR-NM-1 1/pk
EUR 87.6
Description: Bioscience Mag Beads; Magnetic PCR Normaliser

EPA Method 625 Base/Neutral Mix 1 (2000ppm) - 5.5mL Bottle

ECS-N-030 5.5ML
EUR 409.26

Base/Neutral Surrogate Mix (3) (1000ppm) - 5.5mL Bottle

ECS-N-002 5.5ML
EUR 52.44

Acid Extractables Surrogate Mix (3) (2000ppm) - 5.5mL Bottle

ECS-N-003 5.5ML
EUR 52.44

Base/Neutral Surrogate Mix (4) (1000ppm) - 5.5mL Bottle

ECS-N-022 5.5ML
EUR 66.12

Acid Extractables Surrogate Mix (4) (2000ppm) - 5.5mL Bottle

ECS-N-023 5.5ML
EUR 98.04

Semivolatile Surrogate Mix (6) (1000/2000ppm) - 5.5mL Bottle

ECS-N-027 5.5ML
EUR 88.92

Base/Neutral Surrogate Mix (3) (1000ppm) - 11.5mL Bottle

ECS-Z-002 11.5ML
EUR 98.04

Acid Extractables Surrogate Mix (3) (2000ppm) - 11.5mL Bottle

ECS-Z-003 11.5ML
EUR 98.04

Base/Neutral Surrogate Mix 4 component-10.5mL Bottle

ECS-Z-022 10.5ML
EUR 118.56

Acid Extractables Surrogate Mix 4 component-10.5mL Bottle

ECS-Z-023 10.5ML
EUR 186.96

The egg drop syndrome (76) One-Step PCR kit

Oneq-V044-100D 100T
EUR 1039.2

The egg drop syndrome (76) One-Step PCR kit

Oneq-V044-150D 150T
EUR 1177.2

The egg drop syndrome (76) One-Step PCR kit

Oneq-V044-50D 50T
EUR 861.6
aprofarm
aprofarm
Whereas the <i>KEL</i> *<i>02.06</i> allele coding for the Js(a) phenotype was missing in Germans; 0.8% of the Syrian donors carried 1 copy of this allele. 1.8% of the Syrian but only 0.3% of the German donors were negative for <i>YT</i> *<i>01</i>. One donor from Northern Africa homo-zygously carried the <i>GYPB</i> *<i>270+5g>t</i> mutation, inducing the S-s-U+<sup>w</sup> phenotype, and in 2 German donors a <i>GYPB</i> *<i>c.161G>A</i> exchange, which induces the Mit+ phenotype, caused a <i>GYPB</i> *<i>03</i> allele dropout in the MALDI assay. The overall failure rate of the Arabian panel was 0.4%.

CRISPR-mediated knock-in in the mouse embryo using long single stranded DNA donors synthesised by biotinylated PCR

Successful gene knock-in by CRISPR-Cas9 in the mouse zygote requires three components; guideRNA, Cas9 protein and a suitable donor template, which usually comprises homology flanked insert sequence. Recently, long single stranded DNA (lssDNA) donors have emerged as a popular choice of DNA donor, outperforming dsDNA templates in terms of knock-in efficiency for gene tagging and generating conditional alleles.

 

The generation of these donors can be achieved through several methods that may introduce errors in the sequence, result in poor yields, and contain dsDNA contamination. We have developed our own cost-effective lssDNA synthesis methodology that results in high purity, sequence verified, low contamination lssDNA donors. We provide a detailed methodology on the design and generation of such donors for gene tagging experiments and generating conditional alleles.

BDNF Val66Met Polymorphism, the Allele-Specific Analysis by qRT-PCR – a Novel Protocol

Background: Alteration in brain-derived neurotrophic factor (BDNF) production is a marker of neuropathological conditions, which has led to the investigation of Val66Met polymorphism occurring in the human BDNF gene (BDNF). Presently, there are no reported methods available for the analysis of Val66Met impact on human BDNF functioning.

Purpose: To develop a qRT-PCR protocol for the allele-specific expression evaluation of the Val66Met polymorphism in BDNF

Methods: Using RNA extracted from muscle samples of 9 healthy volunteers (32.9 ± 10.3 y) at rest and following a maximal effort aerobic capacity exercise test, a protocol was developed for the detection of Val66/Met66 allele-specific BDNF expression in Real-Time Quantitative Reverse Transcription PCR (qRT-PCR) – relative to housekeeping genes – and validated by absolute quantification in Droplet Digital Polymerase Chain Reaction (ddPCR).

 

Results: Differences in the relative values of BDNF mRNA were confirmed by ddPCR analysis. HPRT1 and B2M were the most stable genes expressed in muscle tissue among different metabolic conditions, while GAPDH revealed to be metabolic responsive. Conclusion: Our qRT-PCR protocol successfully determines the allele-specific detection and changes in BDNF expression regarding the Val66Met polymorphism.

Standardization of BCR-ABL1 p210 Monitoring: From Nested to Digital PCR

The introduction of tyrosine kinase inhibitors in 2001 as a targeted anticancer therapy has significantly improved the quality of life and survival of patients with chronic myeloid leukemia. At the same time, with the introduction of tyrosine kinase inhibitors, the need for precise monitoring of the molecular response to therapy has emerged. Starting with a qualitative polymerase chain reaction, followed by the introduction of a quantitative polymerase chain reaction to determine the exact quantity of the transcript of interest-p210 BCR-ABL1, molecular monitoring in patients with chronic myeloid leukemia was internationally standardized.

 

This enabled precise monitoring of the therapeutic response, unification of therapeutic protocols, and comparison of results between different laboratories. This review aims to summarize the steps in the diagnosis and molecular monitoring of p210 BCR-ABL1, as well as to consider the possible future application of a more sophisticated method such as digital polymerase chain reaction.

Droplet Digital PCR Analysis of Liquid Biopsy Samples Unveils the Diagnostic Role of hsa-miR-133a-3p and hsa-miR-375-3p in Oral Cancer

Despite the availability of screening programs, oral cancer deaths are increasing due to the lack of diagnostic biomarkers leading to late diagnosis and a poor prognosis. Therefore, there is an urgent need to discover novel effective biomarkers for this tumor. On these bases, the aim of this study was to validate the diagnostic potential of microRNAs (miRNAs) through the analysis of liquid biopsy samples obtained from ten oral cancer patients and ten healthy controls. The expression of four selected miRNAs was evaluated by using droplet digital PCR (ddPCR) in a pilot cohort of ten oral cancer patients and ten healthy donors. Bioinformatics analyses were performed to assess the functional role of these miRNAs.

 

The expression levels of the predicted down-regulated hsa-miR-133a-3p and hsa-miR-375-3p were significantly reduced in oral cancer patients compared to normal individuals while no significant results were obtained for the up-regulated hsa-miR-503-5p and hsa-miR-196a-5p. ROC analysis confirmed the high sensitivity and specificity of hsa-miR-375-3p and hsa-miR-133a-3p. Therefore, both miRNAs are significantly down-regulated in cancer patients and can be used as biomarkers for the early diagnosis of oral cancer. The analysis of circulating miRNAs in a larger series of patients is mandatory to confirm the results obtained in this pilot study.

Leave a Reply

Your email address will not be published.