Glossary

A

Acute Kidney Injury

Rapid reduction in or acute loss of kidney function.

Acute Lung Injury

A distinct form of acute respiratory failure.

AMD Age related Macular Degeneration

Degenerative eye disease that causes damage to the macula (central retina) of the eye.

Angiogenesis

Formation of new blood vessels (i.e. in wound healing, menstrual cycle); Tumor angiogenesis is the formation of new blood vessels that grow into the tumor, giving it nutrients and oxygen to assist its growth.

Antisense molecules

A sequence of nucleic acids, typically created in the lab, whose sequence is exactly complementary/opposite to an mRNA molecule made by the body. mRNA molecules made by the body serve as templates for the synthesis of protein (see Translation). Since the "antisense" mRNA molecule binds tightly to its mirror image, it can prevent a particular protein from being made.

ASCO

American Society of Clinical Oncology.

AtuPLEX®

The AtuPLEX® system broadly delivers siRNA to the endothelial cells of the vascular system.

AtuRNAi

A proprietary form of RNAi (siRNA) developed by Silence Therapeutics.

C

Cancer

A group of diseases in which cells grow unrestrained in an organ or tissue in the body. Cancer can spread to tissues around it and destroy them or be transported through blood or lymph pathways to other parts of the body.

CD31

Cluster molecule (number 31) also referred to PECAM-1 or Platelet Endothelial Cell Adhesion Molecule1.

D

DACC

A proprietary siRNA delivery system focused to the lung developed by Silence Therapeutics

DBTC

A proprietary siRNA delivery system focused to the liver developed by Silence Therapeutics

Delayed Graft Function

A form of acute kidney failure in the immediate post-transplant period

Development

The process by which a compound discovered in research is progressed through human clinical trials prior to approval to market

Diabetes

A range of conditions characterised by high blood sugar and glucose intolerance

Diabetic Macular Oedema

A disorder of the eye caused by leaking blood vessels in the retina leading to impairment of vision

DNA

The molecule that encodes genetic information and serves as a template for the production of RNA and indirectly also proteins

Drug optimisation

A method to improve the efficacy of a drug

Drug target

A gene or gene product (protein) against small molecule drugs will be screened and developed

E

Endothelium

A thin layer of cells that lines the interior surface of blood vessels from the heart to the smallest capillary

Expression

The process by which the information in a gene is used to create proteins

F

Formulation

A combination of an active drug and pharmacologically inactive ingredients used to achieve adequate bioavailability

G

Gene

Structurally, a basic unit of hereditary material; an ordered sequence of nucleotide basis that encodes a product (this product could be just RNA like rRNA or finally coding for a protein)

Gene product

The RNA or protein that results from the expression of a gene

Gene silencing

Targeting or interfering with a specific gene and preventing its expression (in other words, preventing it from leading to a protein)

Gene target

A gene or its product (protein) which plays a critical role in pathology

Genome

DNA sequence of an organism; its size is generally given as its total number of base pairs

I

In vitro

A biological or biochemical process carried out in a test tube or similar vessel

In vivo

A biological or biochemical process carried out in a living organism.

Indication

A relevant patient condition

Ischemia Reperfusion Injury

Ischemia is a restriction in blood supply causing absence of oxygen and nutrients. Reperfusion injury is the tissue damage caused when blood supply returns to the tissue after a period of ischemia.

K

Knock-down

Specific down regulation of a target messenger RNA or protein.

M

Metastases

Tumours produced by the spread of cancer cells to other parts of the body.

Micro RNA

Mall regulatory antisense RNA that may regulate the expression of other genes.

Monoclonal antibodies

One possible treatment for cancer; they bind only to cancer cell-specific antigens and induce an immunological response against the target cancer cell.

mRNA

Messenger RNA.

O

Oncology

The study of cancer.

P

Phase I

Studies conducted usually in healthy subjects to determine initial saftey, tolerability and pharmokinetics of a drug and from which the participants do not derive any therapeutics benefit.

Phase IIa

Early phase II studies, typically pilot or feasability studies conducted in a small number of patients.

Pre-clinical

Experiments performed before starting clinical trials to assess a compound and its potential to cause adverse side effects.

Protein

Organic compounds made up of amino acids. Proteins are responsible for most of the function and much of the structure of living organisms, including humans.

Pulmonary Hypertension

High blood pressure in the arteries of the lungs.

R

R&D

Research and development.

RNA

Ribonucleic acid.

RNAi

RNA interference: a mechanism used to prevent translation of specific genes by targeting and degrading mRNA embodying the genetic sequence of the relevant gene with the intention of inhibiting production of disease causing proteins.

RNAi Therapeutics

A potential new class of therapeutics which mimic the natural RNAi mechanism in order to suppress (silence) unwanted gene expression and consequently function as it occurs in diseases.

S

Sequence

The order of nucleotides in a DNA or RNA molecule, or the order of amino acids in a protein molecule.

siRNA

Short interference RNA: short double stranded (19 to 21 nucleotides in length) RNAi molecule.

Small molecule

Chemical entity used for screening against drug targets.

T

Target

The molecule that a substance or a drug binds to (often targets are proteins).

Therapeutic

A pharmaceutical product targeted to treat a specific disease.

Transfection

The alteration of the genetic code within a cell by the addition of exogenous genetic sequences.

Translation

The process of using a messenger RNA sequence to build a protein. The messenger RNA serves as a template on which transfer RNA molecules, carrying amino acids, are lined up. The amino acids are then linked together to form a protein chain.

V

Validate, Validation

Proof of relevance and/or correctness, for example the relevance of a gene for a disease.