Allele Biotech is 10 Years Old and Celebrating with FREE Oligos!

Allele Biotech is 10 years old!!!!!!! December 1999 was when Dr. Jiwu Wang and colleagues started this great company as a DNA oligo and siRNA service provider to the San Diego area. Since then he has fearlessly lead Allele into the forefront of the biotechnology industry with multiple RNAi patents, numerous NIH grants, revolutionary iPSC and fluorescent protein technologies, the acquisition of Orbigen, a continuously growing catalog of over 1000 molecular biology products and signature Allele Biotech Reagents, and a business culture that is approachable, encouraging, and reverential of research advancement through global communication and collaboration.

What a difference a decade makes. Today Allele Biotech is a top oligo service provider all around the country with customers in all of America’s major academic institutions. Currently, we are the sole oligo provider on the University of California San Diego’s central purchasing site, Marketplace; a collaboration designed to provide top quality oligonucleotides to UCSD research departments while saving them thousands of dollars annually. We now produce many of our own oligo synthesis and modification reagents, further cutting the costs to our valuable customers which enabled us to continue operations this last year without raising prices due to the worldwide acetonitrile shortage which more than quadrupled in cost! Allele Biotech has stood out over the years not only to our loyal customers but other oligo providers as well. Less than 5 years into our operation we were approached by one of the well known, top three, oligo providers in an attempt to buy us out! We resisted and are still here to proudly serve the research community with the Allele brand!

It all started with oligos…Now ten years later we want to honor our accomplishment by giving away a FREE month of oligos to one lucky customer! To enter you must be an Allele Biotech Facebook fan or friend. A winner will be randomly selected from our friends/fan pool on Sunday, February 14th, 1210 at noon. That lucky winner will receive FREE oligos for the month of March 2010! Limitations apply. Click here for terms and conditions.

Tags: 10 year with Allele Biotech, 10th anniversary promotion, anniversary promotion, FREE oligos, oligo services

Allele Biotech Spotlight Promo for ASCB Dec 09 Meeting!

This year our President and CEO, Dr. Jiwu Wang Ph.D., will be presenting at the American Society for Cell Biology meeting in San Diego, December 5th through 9th. Dr. Wang will be presenting results of two studies that involved the Allele Biotech Fluorescent Proteins and iPSC product lines:

Monomeric photoconvertable fluorescent protein variants produced by directed evolution for brightness and efficient photoconversion – a collaborative effort with the Campbell lab at the University of Alberta

Increased efficiency and speed of reprogramming of human cells into induced stem cells using high-titer lentiviral vectors encoding cell cycle progression and survival genes – a collaborative effort with the Chang lab at the University of Florida

In honor of this prestigious occasion Allele Biotech is having a Spotlight Promotion on all Fluorescent Protein and iPSC Products! The promotions, which will vary from product to product, will include 10% and 20% off price reductions, FREE shipping, and even “Buy 2 get one Free” deals!

Products eligible for the Spotlight Promotions begin with:

ABP-FP-____ Catalog

ABP-SC-____ Catalog

To qualify for these promotions you must be attending the ASCB meeting in San Diego and provide us with a copy of your registration form or be one of our loyal facebook, twitter, or myspace friends. Any questions can go to oligo@allelebiotech.com

Call for details and ask for info on the Spotlight Promotions! Offers good now through December, 9th 2009!

New Product of the Month 11/23-29/09: ThermoExp500 PCR machine (thermocycler) $4,250.00, with almost twice as fast temperature ramping as MJ’s TC1000, and more reliability.

Tags: Allele Biotech Promotions, Allele Biotech Sales, American Society for Cell Biology, ASCB San Diego 2009, fluorescent proteins discount, free shipping, iPSC discount, MJ research, PCR machine, TC1000, thermocycler

Q&A About Choosing Modified Oligos

Allele’s New Products of the Week, Oct 19-26, 2009: DNA oligonucleotide synthesis reagents dA, dT, dC, dG controlled pore glass (CPG) beads for oligo synthesis. With previously launched CPG beads and phosphoramidites for modified oligos, this product line now provides the most essential materials for oligo synthesis by university core facilities, company internal oligo production groups, or commercial oligo providers at significantly reduced prices.

Allele’s Weekly Promotion Oct 19-26, 2009: In accordance with the launch of the above new products, all 3’ amino, thiol, Dabcyl, FAM, biotin modified oligos of 50 to 200 nmol scale are offered at unprecedented $10/modification.

Question1:

What do you have available that can be added to the 3’ end of a primer/probe to stop PCR amplification?

There are a few commonly used modifications on the 3′ of an oligo to block polymerase extension, e.g. C3 spacer, amino-modified C6, inverted dT, phosphate. Although no 3′ blocking modifications are 100% effective, the amino-modified C6 offers the best result, leaving1% or less unblocked; phosphate is not as effective of a block, with up to 2% unblocked. We recommend 3’ amino group also because it is less expensive compared to other 3’ modifications if ordered from Allele Biotech.

Question2:

Can you provide 5’ digoxigenin as a standard modification on your oligos?

5’ Dig is typically added by conjugating the digoxigenin group to a 5’ amino added during oligo synthesis. 5’ amino modification can be ordered from almost all oligo suppliers including Allele. You may need to add digoxigenin using a commercial kit by yourself. If you are interested in having Allele Oligo Service perform the chemical linking, email oligo@allelebiotech.com.

Question3:

Is Dabsyl a misspelling of Dabcyl?

DABCYL acid is the abbreviation of 4-(dimethylaminoazo)benzene-4-carboxylic acid. Sometimes DABSYL (4-dimethylaminoazobenzene-4”-sulfonyl chloride) is mistaken for ‘DABCYL’. They do share similar properties as fluorescence quenching agents, with minor difference in maximum absorbance, but can in general be used interchangeably in pair with fluorescent dyes such as FAM. Allele uses Dabcyl as its standard 3’ modification and, by using its own oligo synthesis reagents for adding this group, offers a price less than half of most other oligo manufacturers (check back for pricing updates next week for even lower prices). DABCYL is one of the most popular acceptors for developing FRET-based nucleic acid probes and protease substrates.

Tags: 3’ amino, CPG beads, dA, Dabcyl, dC, dG, dT, FAM, modified oliogs, oligonucleotide synthesis reagents, phosphoramidite, Promotion Oct 19/26/09, thiol

HPLC Purified siRNA with Known RNAi Effects at $149/12.5nmol

RNA oligo is significantly more difficult to synthesize than DNA oligos, mainly because the efficiency of coupling each new ribonucleotide during RNA synthesis is a few fold lower than deoxyribonucleotide during DNA synthesis. Typically, there is an ~10% chance a DNA oligo of 21 bases will have a mutation (most frequently a deletion mutation); for an RNA oligo of 21 bases, as in an siRNA pair, such chance is much higher. Furthermore, after combining the sense and antisense siRNA strands, some RNA molecules will remain as single-stranded thereby not fitting for the RNAi apparatus.

RNA interference is a dose-sensitive process — specificity of gene silencing is meaningful only relative to the active concentration of siRNA used. When the concentration is too low, even the most effective siRNAs would fail to cause gene expression knockdown; when too high, non-specific effects will be duly observed. Therefore, it is essential that the concentrations of siRNAs are measured correctly. When doing so, one must consider not only what the apparent concentrations are by OD260 reading, but also whether the RNA strands are of full-length and whether only dsRNA molecules are counted. This issue might not affect data interpretation if appropriate controls are included in one set of RNAi experiments, but it could have significant influence on conclusions if data from different experiment sets or labs are compared or combined.

HPLC purification currently provides the best means to remove RNA molecules with deletions or remain single-stranded, however, the price tag added by most reagent providers for such treatment has been prohibiting because manufacturers either need to start synthesis at a much bigger scale to obtain promised amount, or they do not promise the delivery quantity at all. The phosphoramidites (oligo building blocks) for RNA synthesis can be 10 times or more expensive than for DNA. Some companies offer alternative purification methods such as a cartridge type device, but they can only remove salt and small impurities, not RNA oligos of shorter lengths accumulated at each cycle of amide coupling. The AllHPLC siRNAs within Allele’s RNAi product line, pre-validated or custom made, are uniformly HPLC purified with 5 OD or 12.5 nmol of double-stranded, annealed siRNA delivered. Allele passes to customers the cost savings from manufacturing our own RNA amidites and other reagents for oligo synthesis. The pre-validated HPLC purified double-stranded siRNA is offered today at $149/12.5 nmol.

Before purchasing siRNAs, even at a low cost of $29 per pair of HPLC purified control siRNA from Allele, researchers still need to consider how well their cells can be transfected. For hard-to-transfect cells, lentiviral vectors carrying a shRNA expressing cassette is often a better choice. To establish stable cell lines, plasmid vectors should be considered. For low cost target screening, the PCR format linear siRNA expression cassettes have advantages.

Tags: DNA, gene silencing, HPLC, oligo, reagents for chemical synthesis of DNA and RNA oligonucleotides, reagents for oligonucleotide, RNA, RNA interference, RNAi, shRNA, siRNA

Francis Collins On the Job

Dr. Collins did a town hall meeting style announcement his first day as NIH Director on Aug 17th, 2009. He laid out his view for the NIH: more funding (good), encouraging young scientists (good, average age for first own funding for US biologist is 42, not good), and staying open in communication with society it is serving.

The NIH has $30.9 billion budget for 09 and 2010 thanks to the stimulus addition of $10 billion/year. However, it will feel dried up after two years if the budget plan remains as is. The Obama administration does not seem to want increase the basic research but instead focus more on health care management.

Collins is a well admired director and established scientist. However, it may be a little concerning that he might be too much into “big science” and organized efforts. I don’t know what they teach in graduate classes now but from what I was told 20 years ago curiosity-driven science is the best science and that was what got the US to the dominant leadership in biomedical fields.

Talking about nurturing young scientists, big programs and big labs controlling most grants by proposing big science seem trendy these days. The fight to become one of the big guys in a small, crowded field is a really daunting path for young researchers to tread. The big guys have the say from publication to funding and often times the unpleasant thought and bitter taste of competing against a scientific juggernaut turn young researchers away.

Tags: big research, Dr. Francis Collins, NIH budget, NIH director, Obama's research policy, young researchers in US