Mobilizable Donor Vectors
Mobilizable Donor Vectors - Related Videos
07:17
Single Port Donor Nephrectomy
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Single port laparoscopic surgery is changing the standard of care in surgical care like nothing since the laparoscopic technique was introduced 20 years ago. We present out technique of single port donor nephrectomy using the Gelpoint device. We have successfully performed this surgery in 100 patients.
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Ex Situ Normothermic Machine Perfusion of Donor Livers
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Here we present a protocol describing oxygenated ex situ machine perfusion of donor liver grafts. This article contains a step by step protocol to procure and prepare the liver graft for machine perfusion, prepare the perfusion fluid, prime the perfusion machine and perform oxygenated normothermic machine perfusion of the liver graft.
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Corneal Donor Tissue Preparation for Endothelial Keratoplasty
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Endothelial corneal transplantation is a surgical technique for treatment of posterior corneal diseases. Mechanical microkeratome dissection to prepare tissue results in thinner, more symmetric grafts with less endothelial cell loss and improved outcomes. Dissections can be performed at the eye bank prior to corneal transplantation surgery.
09:20
Vectors in Multiple Directions
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2023
Source: Nicholas Timmons, Asantha Cooray, PhD, Department of Physics & Astronomy, School of Physical Sciences, University of California, Irvine, CA This experiment demonstrates how vectors add and subtract in multiple directions. The goal will be to analytically calculate the addition or subtraction of multiple vectors and then to experimentally confirm the calculations. A vector is an object with both magnitude and direction. The magnitude of a vector is simply denoted as the length,...
12:52
Conjugation: A Method to Transfer Ampicillin Resistance from Donor to Recipient E. coli
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2023
Source: Alexander S. Gold1, Tonya M. Colpitts1 1 Department of Microbiology, Boston University School of Medicine, National Emerging Infections Diseases Laboratories, Boston, MA First discovered by Lederberg and Tatum in 1946, conjugation is a form of horizontal gene transfer between bacteria that relies on direct physical contact between two bacterial cells (1). Unlike other forms of gene transfer, such as transformation or transduction, conjugation is a naturally occurring process in which...
FAQs
The oriT sequence provides the mobilization signal recognized by transfer proteins supplied by a helper plasmid or conjugative system. Those proteins process the vector DNA and prepare it for movement through the transfer apparatus. Because oriT directs this processing, the construct can participate in transfer without carrying every gene needed to encode the complete transfer machinery.
Mobilizable donor vectors carry transfer-related recognition information but lack the complete machinery required for independent transfer. A helper plasmid or another conjugative system must supply the missing proteins and apparatus. This separation makes the vector a cargo platform rather than a fully self-sufficient transfer system, allowing researchers to choose the transfer functions separately from the genetic material being delivered.
Transfer depends on a cell-contact-dependent mating apparatus, so DNA movement requires an interaction between donor and recipient cells rather than simple exposure to purified DNA. The donor provides the mobilizable construct, while the conjugative system enables passage into the recipient. This mechanism is especially relevant when the target bacterium is difficult to transform directly.
The construct’s modular cargo determines whether it delivers genes, regulatory elements, or genome-editing components. Its mobilization site supports transfer, while the selected cargo supplies the intended biological function after delivery. This separation between transfer capability and genetic payload helps researchers adapt one vector framework for circuit construction, strain engineering, functional studies, or microbial production systems.
A typical workflow begins by assembling the desired genetic cargo with a mobilization site, placing the construct in a donor cell, and supplying transfer functions through a helper plasmid or conjugative system. Donor and recipient cells are then brought into the required contact for DNA transfer. The resulting recipient can be examined for the intended engineered function.
They are particularly useful when a recipient bacterium is difficult to transform directly. Rather than relying on direct introduction into that strain, researchers use a donor cell and a compatible transfer system to deliver the construct. This strategy broadens access to bacterial hosts for genetic circuit construction, strain engineering, functional studies, and microbial production research.
After delivery, the genetic payload can support several bioengineering goals, including introducing new genes, modifying regulation, or providing genome-editing components. Researchers can then investigate gene or circuit function, engineer strain properties, or develop microbial production systems. The vector’s modular design is valuable because the same transfer approach can accommodate different experimental payloads and objectives.
In microbial genetics, these vectors provide a way to move defined genetic material between a donor and a recipient while separating cargo design from transfer machinery. That arrangement supports functional studies in bacterial strains that may be challenging to transform by conventional means. It also enables researchers to test regulatory elements, engineered circuits, or genome-editing strategies in selected recipients.